CN201195425Y

CN201195425Y - Forced-press soft sheet two-sided dual-color offset press

Info

Publication number: CN201195425Y
Application number: CNU2008200797733U
Authority: CN
Inventors: 沙晓明; 沈宏伟; 席宏兵; 薛锋
Original assignee: JIANGSU CHANGSHENG GROUP CO Ltd
Current assignee: JIANGSU CHANGSHENG GROUP CO Ltd
Priority date: 2008-04-07
Filing date: 2008-04-07
Publication date: 2009-02-18
Anticipated expiration: 2018-04-07

Abstract

The utility model provides a hard-pressing soft sheet-fed double-surface double-color offset printer, a plurality of frameworks are fixed on a machine seat, a paper-feeding component is connected with a framework component I, the framework component I is equipped with forward-transfer drums I, II, a paper-transferring mechanism and a printing unit I, a framework component II is equipped with a printing unit II, a middle-transferring drum component is arranged between the printing units, a framework component III is added on the framework component I, the framework component III is equipped with a printing unit III, the printing unit III is connected with the printing unit I via the middle-transferring drum, a framework component IV is added on the framework component II, the framework component IV is equipped with a printing unit IV, and the printing unit IV is connected with the printing unit II via the middle-transferring drum. The utility model reduces problems of dot enlargement and distortion and the like, and guarantees stable printing pressure, smooth operation and correct overprint.

Description

The soft sheet-fed dual-sided two color of a kind of hard pressure offset press

Technical field

The utility model relates to a kind of offset press, is specifically related to the soft sheet-fed dual-sided two color of a kind of hard pressure offset press.

Background technology

Relevant by retrieval patent documentation does not retrieve the dual-sided two color offset press identical with the utility model structure at present, and only retrieving the patent No. is 200520074414.5, and patent name is a Perfector for hard press soft single paper.Along with the development of print utility, the quality requirement of book and periodical printing is also improving greatly, and not only the definition to font has improved requirement, to the also raising greatly of requirement of written color, no longer is satisfied with single color.In order to address this problem, some placards, advertising and printing and books and periodicals mostly adopt the import printing machine.And the machinery of foreign country is because structure is very complicated, paper is required high, also high to operating personnel's specification requirement, this mode of the general incompatibility of native paper is printed, so extremely be difficult to promote, and the machine cost is very expensive, even the strong producer of minority is afforded, also is difficult to bear the expense of paper during use.So be necessary existing offset press is improved, to satisfy demand of practical production.

The utility model content

It is 200520074414.5 according to the patent No. that the utility model provides a kind of, and patent name is a Perfector for hard press soft single paper and improvedly have a soft dual-sided two color offset press of hard pressure that sheet-fed is printed double-colored function.

In order to solve above technical problem, the soft sheet-fed dual-sided two color of a kind of hard pressure of the present utility model offset press, by fixing several frames on the support, the paper feeding parts link to each other with rack unit I, transfer drum I, II, feeding mechanism and printing element I before being provided with respectively on rack unit I; Printing element II is set on rack unit II, and transfer drum parts between printing element, being provided with, it is characterized in that: set up rack unit III at described rack unit I place, printing element III is set on rack unit III, is connected by middle transfer drum between printing element III and the printing element I; Described rack unit II sets up rack unit IV in the place, and printing element IV is set on rack unit IV, also is connected by middle transfer drum between printing element IV and the printing element II.

Described printing element I, III structure are identical: by black road, plate cylinder, blanket cylinder, rigidity rigidity impression cylinder are arranged in order from top to bottom and form down.

Described printing element II, IV structure are identical: be arranged in order from top to bottom and formed by last black road, plate cylinder, blanket cylinder, rigidity rigidity impression cylinder.

The last black road color of the following black road of described printing element I and printing element II is identical, and the last black road color of the following black road of printing element III and printing element IV is identical.

The advantage of above structure is: because the roller arrangement mode is divided into four printing elements, and all adopt the mode of rigidity impression cylinder and blanket cylinder combined pressure to print, guarantee that squeegee pressure is stable, running is steady, chromatography is correct, reduce problems such as dot gain, distortion, have the high characteristic of chromatography quality.Owing to I, II in four printing elements China ink road color is identical, III, IV China ink road color is identical, respectively carries out twice printing treatment by the positive and negative to paper, realizes positive and negative twice colouring respectively to paper, reaches the effect of dual-sided two color again.Because it is 200520074414.5 that the patent No. has promptly been inherited by this mechanism, patent name is the existing advantage of Perfector for hard press soft single paper, has realized dual-sided two color again, not only font is clear, and color realized variation, meeting the market requirement, particularly in, the large-sized print requirement of enterprise.Very big practical value and dissemination are arranged.

Description of drawings

Figure is a structural representation of the present utility model.

The specific embodiment

As shown in the figure, paper feeding parts 1 link to each other at support 11 rack unit I2 with fixture, and institute's seal paper is sent on the preceding transfer drum I3.Preceding transfer drum I3, preceding transfer drum II4, feeding mechanism 7 are separately positioned on the rack unit I2.Feeding mechanism 7 is the version of the centering bottom.Printing element I5 also is set on rack unit I2, described printing element I5 is made up of plate cylinder 5a, blanket cylinder 5b, impression cylinder 5c, the following 5d of Mo Lu system, its impression cylinder 5c is the cylinder of rigid structure, takes the mode of the impression cylinder 5c pressing blanket cylinder 5d of rigidity to print.

The structure of printing element III9 is identical with the structure of printing element I5.Be made up of on rack unit III12 plate cylinder 9a, blanket cylinder 9b, impression cylinder 9c, the following 9d of Mo Lu system fixture, its impression cylinder 9c is the cylinder of rigid structure, and the mode of pressing blanket cylinder 5d is printed.

Printing element II8 is set on rack unit II8, printing element II8 is made up of on rack unit II13 plate cylinder 8a, blanket cylinder 8b, impression cylinder 8c, the last 8d of Mo Lu system fixture, impression cylinder 8c is that the cylinder of rigid structure is coated with anti-set-off layer, take the mode of the impression cylinder 8c pressing blanket cylinder 8b of rigidity to print, the last Mo Lu 8d of system adopt four by version with two damping roller spare blackly, the mass colour on described black road is identical with the mass colour of printing element I5.

The structure of printing element IV10 is identical with the structure of printing element II8.Also be to adopt printing element IV10 on rack unit IV14, to form by plate cylinder 10a, blanket cylinder 10b, impression cylinder 10c, the last 10d of Mo Lu system fixture, impression cylinder 10c is that the cylinder of rigid structure is coated with anti-set-off layer, take the mode of the impression cylinder 10c pressing blanket cylinder 10b of rigidity to print, the mass colour on described black road is identical with the mass colour of printing element III9.

Transfer drum parts 6 between printing element I5, printing element III9, printing element II8, printing element IV10, being provided with, in described transfer drum parts 6 can by three with printing element in the isometrical cylinder of plate cylinder form, can be that also doubly the cylinder of footpath plate cylinder diameter in printing element constitutes, the middle transfer drum parts 6 of present embodiment by two with printing element in isometrical transfer tube 6a, the 6c of plate cylinder and one doubly directly transfer tube 6b form.

During printing, transfer drum I3, preceding transfer drum II4, printing element I5 were needing descend the part of the 5d of Mo Lu system to print the reverse side of paper before paper feeding parts 1 passed to paper by feeding mechanism 7, and finishing printing is afterwards needing to descend the part of the 9d of Mo Lu system mass colour to enter printing element III9 the reverse side of paper by middle transfer drum parts 6 to print; After reverse side of paper finishes printing by twice, again paper is entered printing element II8 and printing element IV10 by middle transfer drum parts 6, positive by same program printing.Because this mechanism takes the structure of upper and lower Mo Lu system, so when this machinery was printed paper positive and negative, the paper that need not overturn improved the degree of accuracy of chromatography.Above-mentioned paper all finishes printing at tow sides and obtains required printing product after the back is put in order by collection parts receipts.

Claims

1. press soft sheet-fed dual-sided two color offset press firmly for one kind, by fixing several frames on the support, the paper feeding parts link to each other with rack unit I, transfer drum I, II, feeding mechanism and printing element I before being provided with respectively on rack unit I; Printing element II is set on rack unit II, and transfer drum parts between printing element, being provided with, it is characterized in that: set up rack unit III at described rack unit I place, printing element III is set on rack unit III, is connected by middle transfer drum between printing element III and the printing element I; Described rack unit II sets up rack unit IV in the place, and printing element IV is set on rack unit IV, also is connected by middle transfer drum between printing element IV and the printing element II.

2. the soft sheet-fed dual-sided two color of a kind of hard pressure according to claim 1 offset press is characterized in that: described printing element I, III structure are identical: by black road, plate cylinder, blanket cylinder, rigidity impression cylinder are arranged in order from top to bottom and form down.

3. the soft sheet-fed dual-sided two color of a kind of hard pressure according to claim 1 offset press is characterized in that: described printing element II, IV structure are identical: be arranged in order from top to bottom by last black road, plate cylinder, blanket cylinder, rigidity impression cylinder and form.

4. the soft sheet-fed dual-sided two color of a kind of hard pressure according to claim 1 offset press, it is characterized in that: the last black road color of the following black road of described printing element I and printing element II is identical; The last black road color of the following black road of printing element III and printing element IV is identical.