Paper-transferring printing machine and its middle cylinder
A printing press, sheet-fed technology, applied in general parts of printing machinery, printing presses, printing, etc., can solve the problem of time-consuming and troublesome replacement operations, prevent pollution or scratches, avoid contact, and avoid poor drying. Effect
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no. 1 example
[0045] Figure 2~4 A sheet-fed transfer printing press according to a first embodiment of the present invention is shown.
[0046] figure 2 is a cross-sectional view of the structure of the intermediate cylinder (suction cylinder) used in the sheet-fed transfer printing machine of the first embodiment. image 3 is a longitudinal sectional view of the intermediate drum. Figure 4 is an example of the layout of the suction holes formed in the intermediate drum.
[0047] In the first embodiment, the four intermediate rollers 3a-3d are installed on figure 1 Between the middle and back side printing single page 1 and the front side printing single page 2, and only the second intermediate cylinder 3b has a suction mechanism arranged on its outer surface. That is, the second intermediate cylinder 3b is configured to hold the paper on its peripheral surface by suction, thereby conveying the paper smoothly. More specifically, the second intermediate drum 3 b includes a box (main...
no. 2 example
[0062] Figure 5 A sheet-fed transfer printing machine constructed according to a second embodiment of the present invention is shown. In the second embodiment, two intermediate cylinders (intermediate suction cylinders) are installed in a sheet-fed transfer printing press.
[0063] Such as Figure 5 As shown, in a perfecting press configured to perform two-sided monochromatic printing on paper 4, the second intermediate cylinder 3b and the fourth intermediate cylinder 3d according to the second embodiment of the present invention are installed on the printing cylinder of the reverse printing unit 1 5a and the printing cylinder 5b of the front printing unit 2. In addition, two dryers 17 are installed close to the second and fourth intermediate drums 3b and 3d, respectively. The basic printing functions are the same as those of a conventional perfecting press.
[0064] exist Figure 5 Among them, two dryers 17 are provided, and the two intermediate drums 3b, 3d correspondi...
no. 3 example
[0067] Figure 6 to Figure 8 A sheet-fed transfer printing machine constructed according to a third embodiment of the present invention is shown.
[0068] Figure 6 is a sectional view of the sheet-fed transfer printing machine of the third embodiment, Figure 7 is a perspective view of the intermediate drum and air jets of the third embodiment, Figure 8 Is a side view of the middle drum used to explain the range of preferred locations for air injection in the air shower.
[0069] In the sheet-fed transfer printer of the third embodiment, as Figure 6 As shown, an air shower chamber 50 as an air jet device and an image sensor 60 as an imaging device (such as a CCD camera, CMOS or infrared sensor, etc.) are added to the sheet-fed transfer printing machine of the first embodiment.
[0070] The air shower chamber 50 is configured with a plurality of air injection ports 50a facing the second intermediate drum 3b. The second intermediate cylinder 3 b is provided with a dryer ...
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