CN209869682U - Web offset printing press with led uv curing system - Google Patents

Abstract

The utility model discloses a roll web offset press with LEDUV curing system disposes a support between last group printing unit and the folding machine, is equipped with the paper guide roll on the support to 2 groups LEDUV lamp holders of installation on this support, 2 groups LEDUV lamp holders are installed just one anti-, shine paper front and reverse respectively. The LEDUV lamp holder comprises an irradiation part and a shading part, wherein water channels are arranged on the irradiation part and the shading part and are connected with an industrial water cooler. By adopting the LEDUV curing system, when the printer prints paper on both sides at high speed, the ink on the upper surface of the paper is cured by ultraviolet irradiation, so that the ink is thoroughly dried, the paper is not soiled even if the ink on the paper is scraped in subsequent work, and the quality of printed products is improved.

Description

Web offset printing press with led uv curing system

Technical Field

The utility model relates to a printing machine especially relates to a web offset press with LEDUV curing system.

Background

When the printing machine prints paper on two sides, ink is adhered to the front side and the back side, and after the paper comes out from the printing unit and enters the folding machine, because the ink is not completely dried, a printed product is transferred through the structures such as the paper rolling roller, the paper protecting tape and the like, so that the printed product is very easy to rub off, and the quality of the printed product is influenced. The progress of the web-fed offset rotary printing press is not only the improvement of the printing speed, but also the improvement of the quality requirement of printing dots, so that along with the continuous progress of the printing press, the problem of drying the ink is increasingly prominent, and the ink becomes a key bottleneck for preventing the improvement of the printing quality.

The solution in the prior art is mostly to use a gas drying box, heat-set ink, heat air by gas energy, extract ink solvent by hot air, and then cure the ink by cooling. Although the scheme can solve the problem of ink drying and obtain high-quality prints, the defects are obvious, firstly, the use cost is high, the purchase cost of the oven is high, and gas, electricity, a circulating cooling water tower and the like used by the oven are high in continuous investment in the production process, so that most users cannot bear the ink; secondly, the thermosetting ink is only suitable for the use of coated paper due to high viscosity, but is not suitable for book paper and newspaper with light gram weight and thin thickness, and the proportion of the books and newspapers in printed matters is large, so that the common web book printing machine and newspaper printing machine are not suitable for adopting the ink drying mode.

SUMMERY OF THE UTILITY MODEL

The utility model provides a web offset press with LEDUV curing system.

The utility model provides a technical problem-the technical scheme who adopts is:

a roll paper offset press with LEDUV curing system is characterized in that a support is arranged between the last group of printing units and a folding machine, a paper guide roll is arranged on the support, 2 groups of LEDUV lamp holders are arranged on the support, and the 2 groups of LEDUV lamp holders are arranged in a front-to-back mode and respectively irradiate the front side and the back side of paper.

By the above-mentioned the technical scheme provided by the utility model, the embodiment of the utility model provides a web offset press with LEDUV curing system adopts LEDUV curing system, when the high-speed double-sided printing paper of printing machine, carries out the ultraviolet irradiation solidification to the printing ink of paper upper surface, lets printing ink thoroughly dry for the printing ink on the paper is not scraped in the subsequent sequence work, lets the paper not dirty, improves the printed matter quality to obviously reduce purchasing cost and energy saving than the scheme of gas oven drying technique.

Drawings

Fig. 1 is a schematic view of a main view of a web offset printing press with led uv curing system according to an embodiment of the present invention.

Fig. 2 is a schematic top view of a web offset printing press with led uv curing system according to an embodiment of the present invention.

In the figure:

1. folding machine, 2, support, 3, last group printing unit, 4, LEDUV lamp holder, 5, industrial cold water machine.

Detailed Description

Embodiments of the present invention will be described in further detail below. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.

The utility model discloses a web offset press with LEDUV curing system, the concrete implementation mode of its preferred is:

a support is arranged between the last group of printing units and the folding machine, paper guide rolls are arranged on the support, 2 groups of LEDUV lamp heads are arranged on the support, and the 2 groups of LEDUV lamp heads are arranged in a positive-negative mode and respectively irradiate the front side and the back side of the paper.

The LEDUV lamp holder comprises an irradiation part and a shading part, wherein water channels are arranged on the irradiation part and the shading part, and the water channels are connected with an industrial water cooler.

The industrial water chiller comprises 2 industrial water chillers, wherein one industrial water chiller is connected with a water channel of a group of LEDUV lamp holders.

The paper guide roller is a special UV rubber roller.

The utility model discloses a web offset press with LEDUV curing system adopts LEDUV curing system, when the high-speed double-sided printing paper of printing machine, carries out the ultraviolet irradiation solidification to the printing ink of paper upper surface, lets printing ink thoroughly dry for even the printing ink on the paper is scraped in the subsequent operation, also lets the paper not dirty, improves the printed matter quality, and obviously reduces purchasing cost and energy saving than original scheme.

The specific embodiment is as follows:

as shown in fig. 1 and 2, the water cooling system comprises 2 groups of led uv lamp holders, 1 drive control power distribution cabinet, 2 industrial water coolers, a system connection power cable, a control cable, a communication cable, a water pipe and a mounting bracket.

Led uv lamp head: the number of the LEDUV lamp heads is 2, two groups of the LEDUV lamp heads are arranged on the front side and the back side of the solidified paper respectively, and the LEDUV lamp heads are arranged at proper positions between the printing unit and the folding machine. The lamp holder is divided into an irradiation part and a shading part, and the two parts are provided with water channels, so that heat dissipation and cooling are facilitated.

An industrial water chiller: 2 industrial water coolers, one water cooler cools a group of lamp holders.

The method comprises the following steps:

1. and replacing the special rubber roller for the UV, namely replacing the roller in the printing machine with the special rubber roller for the UV except the water roller and the printing roller, and replacing related consumables (rubber cloth, CTP (computer to plate) plates, car washing water, printing ink and auxiliary materials) with special UV.

2. A support is arranged between the last group of printing units and the paper folding machine, paper guide rollers are arranged on the support, 2 groups of LEDUV lamp holders are arranged on the support, the LEDUV lamps are arranged in a forward-backward mode, when paper is led out of the last group of printing units and enters the support, ultraviolet irradiation curing is carried out on the front side and the back side of the paper through the LEDUV lamps, the drying speed of ink on the upper surface of the paper is accelerated, the ink is thoroughly dried, then the paper is guided to the paper guide rollers on the support, and then the paper enters the paper folding machine to carry out subsequent work.

The scheme does not influence the internal structure of the printing production line, and a user can select the printing product according to the requirement of the printing product. Under the conditions of low-speed printing and no influence on the quality of printed products, the printing can still be performed by adopting a common rubber roller, the special rubber roller for UV and related consumables are not replaced, and meanwhile, the ink on the upper surface of the paper is not cured by ultraviolet irradiation. And under the condition of high-speed printing and high requirement on the quality of printed products, the system is put into use by adopting an LEDUV curing technology.

The utility model is suitable for a various web press models. The web press is characterized by continuous printing of the paper, and high speed and efficiency are the advantages of the machine. Compared with the scheme of adopting a gas oven drying technology, the LEDUV curing system has the following advantages:

the system has compact structure, improves the printing speed, can be additionally arranged on a printing production line, and does not influence the occupied space. The system can be configured on a machine which leaves a factory newly, and can also be conveniently added on an installed old product, so that the old production line is upgraded and modified, and the utilization rate of fixed assets of customers is improved;

the system is suitable for various printing materials, can dry materials such as book paper, newspaper and the like besides coated paper, and is suitable for various machine types such as a roll paper book machine, a roll paper newspaper machine, a commercial printing machine and the like.

The UV ink belongs to environment-friendly ink, no harmful gas is discharged when LEDUV is used for replacing an oven for drying, and the national environment-friendly requirement on the printing industry is met.

The cost of the LEDUV curing system is about one third of the cost of procurement and use of a gas oven. Meanwhile, whether the system is put into or not can be selected according to different requirements of the printed products, so that energy is saved, and the use cost is reduced. The system can be used by commercial printers, book and periodical printers and newspaper printers, so that the printing quality is improved, the printing efficiency is improved, and the economic benefit is improved.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. A web offset press with LEDUV curing system is characterized in that a support is arranged between the last group of printing units and a folding machine, a paper guide roll is arranged on the support, 2 groups of LEDUV lamp holders are arranged on the support, and the 2 groups of LEDUV lamp holders are arranged in a front-to-back mode and respectively irradiate the front side and the back side of paper.

2. The web offset printing press with a LEDUV curing system of claim 1, wherein the LEDUV lamp head includes an illumination portion and a shade portion, both portions having a water channel, the water channel being connected to an industrial water chiller.

3. The web offset printing press with led uv curing system of claim 2, including 2 said industrial water coolers, one industrial water cooler connected to the water channels of a set of led uv lamp heads.

4. The web offset printing press with led UV curing system of claim 1, 2 or 3, wherein the paper guide roll is a UV-specific rubber roll.