CN2153454Y - Relief printing plate offset press - Google Patents

Abstract

The utility model relates to a relief printing plate offset printing machine which is composed of a driving device, an offset printing device, an ink system, a relief printing plate, an embossing station, a support frame, etc. The offset printing device is composed of a rubber cylinder, a rolling gear, an eccentric wheel rise and fall arm, a rise and fall shifting fork, and a clamping plate. The rubber cylinder scrolls forward, transfers pictures and words of the relief printing plate on the rubber, and then emboss the pictures and words on papers. The relief printing plate indirect printing is realized. The eccentric wheel rise and fall arm raises and resets the rubber cylinder in the high altitude range, and then the oscillation cycle of the relief printing plate indirect printing is accomplished. The utility model has the advantages of simple structure, convenient operation, and low cost. The utility model is a novel printing device which can realize the relief printing plate indirect printing.

Description

Relief printing plate offset press

The utility model belongs to the improvement of printing machinery and printing technology.

Printing machine is the main process of printing process, the transfer of forme picture and text mainly relies on printing machine to finish, existing printing machine can be divided into letterpress, offset press, intaglio press, filtration printing machine according to mode of printing, and letterpress is the most widely used printing machine at present.

Offset press (also claiming offset press) adopts indirect printing (being transfer printing) method, it has that speed is fast, efficient is high, picture and text advantage clearly, because lithography technique is complicated, paper quality is required high, need the water and the printing ink balance of usefulness to be difficult to guarantee, printing ink is easily emulsification and influence print quality again, thereby environment, equipment, raw material and operating technology are all had strict requirement, thereby exist not enough.

Existing letterpress is to adopt directly printing (promptly straight seal) method, it has the anti-seal of forme, cost is low, the advantage good to the papery printability, owing to be to adopt straight impression method, use certain pressure, the picture and text of forme projection are transferred on the paper, paper directly contacts with relief printing plate, the squeegee pressure that applies is directly to be pressed in by the tympaning of pressing version to act on the relief printing plate on the paper, adopt the then big and picture and text metamorphopsic distortion that prints off of plastic deformation under pressure of harder tympaning, picture and text are smudgy again less for pressure, influence printing quality, thereby the bigger squeegee pressure of requirement, so there is the defective of the trace edge effect of trace " limit of having a guilty conscience is heavy ", in order to guarantee the quality of printed matter, in printing process, need constantly to adopt and dig, scrape, pads etc. fall behind the method for loaded down with trivial details adjustment squeegee pressure, and technology is loaded down with trivial details, efficient is poor, can't adapt to the requirement of market to printed imageization and colorize.

The purpose of this utility model provides a kind of letterest printing machine, its comprehensive letterpress and lithographic advantage, with letterpress directly the impression form be improved to indirect impression form, by the rubber cylinder nip drum is crossed relief printing plate, picture and text on the relief printing plate are transferred on the rubber cylinder, rubber cylinder rolls across a paper again, picture and text is stamped on the paper, thereby overcomes the shortcoming that has letterpress now.

Narrate structure of the present utility model and technological principle below in conjunction with accompanying drawing.

Fig. 1 is the utility model structure chart.

Fig. 2 is the utility model right side view.

See Fig. 1,2, the utility model includes offset printing device, holder device, transmission device, relief printing plate (13), impression platform (14), compositions such as ink system, offset printing device includes rubber cylinder (1), rolling bearing (2), eccentric wheel lifting arm (3), lifting shift fork (4), enterprise's clamping plate compositions such as (5), holder device includes support (8), rolling tooth bar (9), fixed dam (11), sideboard compositions such as (12), transmission device includes motor (15), worm and gear (16), kinematic link compositions such as (17), ink system includes ink fountain (20), inking rubber roll (21), even black plate compositions such as (22), in offset printing device, rubber cylinder (1) is installed on enterprise's clamping plate (5) with eccentric wheel lifting arm (3) is coaxial, rolling bearing (2) is fixed on rubber cylinder (1) two ends, it can roll and drive rubber cylinder (1) and roll along rolling tooth bar (9), the eccentric end of one end of lifting shift fork (4) and eccentric wheel lifting arm (3) flexibly connects, the other end is a positioning end, it connects pulley (10), and can be at enterprise's clamping plate (5) lower swing by pulley (10), the positioning end of lifting shift fork (4) is connected with spring (7) with eccentric wheel lifting arm (3) other end, the elastic force that resets with the swing that keeps lifting shift fork (4), enterprise's clamping plate (5) are installed in rubber cylinder (1) both sides, and kinematic link (17) is fixed on enterprise's clamping plate (5), and to go up and can drive enterprise's clamping plate (5) reciprocating along support (8).The spacing pulley (6) of enterprise clamping plate (5) lower end can roll below support (8), can not move up to limit enterprise's clamping plate (5).Inking rubber roll (21) is installed in enterprise's clamping plate (5) and goes up also and can move with enterprise's clamping plate (5), and ink fountain (20), even black plate (22), flange (13), impression platform (6) are arranged in proper order and be separately fixed on the support (8).Rolling tooth bar (9) is packed on the support (8), and fixed dam (11), sideboard (12) and hand pull (18) also are housed on support (8); Hand (18) the activity of pulling by shift fork connecting rod (19) control sideboard (11).

Narrate typography principle process of the present utility model below:

As shown in Figure 1, the position is that rubber cylinder (1) arrives left side end points among the figure, and be in impressing state, under the drive of kinematic link (17), enterprise's clamping plate (5) move right, rubber cylinder (1) rolls forward along the rolling tooth bar (9) on the support (8), when on relief printing plate (13), rolling across, relief printing plate (13) is gone up the printing ink picture and text to be transferred on the rubber on the rubber cylinder (1), rubber cylinder (1) continues to be rolled to forward impression platform (14) and goes up and contact with paper, under the effect of pressure, the printing ink picture and text transfer printing of rubber cylinder (1) is on paper, finished printing process, simultaneously, inking rubber roll (21) rolls across relief printing plate (13) and finishes the China ink work that is coated with for the first time along with moving right of enterprise's clamping plate (5), rubber cylinder (1) continues to be rolled to the right end points, lifting shift fork (4) is run into fixed dam (11), lifting shift fork (4) drives eccentric wheel lifting arm (3) and turns over an angle, make rubber cylinder (a 1) rising height (about 1.5 millimeters), be in non-impressing state, under kinematic link (17) break-in campaign drives, enterprise's clamping plate (5) are moved to the left, rubber cylinder (1) rolls along rolling tooth bar (9) left, finish the idle stroke motion, simultaneously, inking rubber roll (21) rolls across relief printing plate (13) and finishes the China ink work that is coated with for the second time, when rubber cylinder (1) arrives left side end points, lifting shift fork (4) is run into sideboard (12), lifting shift fork (4) drives eccentric wheel lifting arm (3) angle of reversing, make rubber cylinder (1) height (about 1.5 millimeters) that descended, homing is finished the oscillation cycle of one-step print.In the whole print cycle, rubber cylinder (1) all is to carry out periodic lifting under the control of lifting shift fork (4), and as not needing impression, can pull by hand (18) leave behind active catch retaining (12), lifting shift fork (4) bumps less than it, and rubber cylinder (1) promptly is in non-impressing state.

The utility model has the advantages that simple in structure, processing and fabricating is easy, price is low, easy and simple to handle, a kind ofly to have that printing quality is good, cost is low, efficient is high, can print the new type printing press of monochromatic and colored relief printing plate indirect printing new technology, be the novel printing equipment that can be widely used in printing industry.

Claims (1)

1, a kind of letterest printing machine, comprise by transmission device, ink system, offset printing device, flange (13), impression platform (14), support compositions such as (8), it is characterized in that offset printing device is by rubber cylinder (1), rolling bearing (2), eccentric wheel lifting arm (3), lifting fork (4) and enterprise's clamping plate (5) are formed, rubber cylinder (1) is installed on enterprise's clamping plate (5) with eccentric wheel lifting arm (3) is coaxial, rolling bearing (2) is fixed on rubber cylinder (1) two ends, it can roll along rolling tooth bar (9), the eccentric end of one end of lifting fork (4) and eccentric wheel lifting arm (3) flexibly connects, the other end is a positioning end, positioning end is connected with spring (7) with the other end of eccentric wheel lifting arm (3), enterprise's clamping plate (5) are installed in rubber cylinder (1) both sides, and kinematic link (17) is fixed on enterprise's plate (5), and to go up and can drive enterprise's clamping plate (5) reciprocating along support (8).

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