JPH0624938U - Printing paper drying equipment - Google Patents

Abstract

(57) [Summary] [Purpose] We aimed to prevent vertical wrinkles that occur when printing and drying printed paper. [Structure] A dryer 3 and a cooling roll 5 are provided on the traveling path of the printing paper 1.
And. A porous roll 10 is provided between the dryer 3 and the cooling roll 5 so that the printing paper 1 is lightly pressed and water seeps out from the cooling water passage 11 inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an ink drying apparatus for printing paper printed with a heat-drying type ink in a printing machine.

[0002]

[Prior art]

 FIG. 4 shows an example of a conventional drying device of this type. The printing paper 1 is printed through the printing machine 2 and is normally dried by the hot air blown from the nozzles 4 while traveling substantially horizontally. The drying paper 3 is heated to about 130 ° C., and then the inside is water-cooled. It is cooled to near room temperature by a metal cooling roll 5 and guided to a section such as a folding machine (not shown) through a turn roll 6.

By the way, as shown in FIG. 4, the printing paper has a vertical wrinkle extending in the traveling direction generated by tension or the like when it is conveyed substantially horizontally between the printing press and the cooling roll and without being supported. While running, if there is some vertical wrinkles and the ink solidifies to some extent before the cooling roll, these vertical wrinkles may remain as wrinkles even after cooling and deteriorate the quality of the printed matter. Therefore, as shown in FIG. 5 disclosed in Japanese Utility Model Publication No. 3-50387, it is also known that hot air nozzles 4 in a dryer are alternately arranged in a zigzag pattern and a printing paper is made to travel in an S shape.

[0004]

[Problems to be solved by the device]

 However, even when the hot air nozzles are alternately arranged in a staggered pattern and the printing paper is run in an S-shape, there are several meters that run horizontally, and running horizontally while this may cause vertical wrinkles. As a fire, it will lead to the deterioration of the quality of printed paper. The present invention was developed to address such problems and aims to prevent vertical wrinkles from occurring.

[0005]

Means for Solving the Problems The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 to 3 corresponding to the embodiments. In a printing paper drying device provided with a cooling roll 5 and a cooling roll 5, a porous roll 10 in which water is blotted from a cooling water channel 11 inside by gently pressing the printing paper 1 between the dryer 3 and the cooling roll 5. Is provided.

[0006]

[Action]

 Further, according to the present invention, since the printing paper is sandwiched by the porous roll through which the water seeps by the above-mentioned means, the distance between the fulcrums of the printing paper is narrowed and the vertical wrinkles are reduced, and the printing paper becomes Prevents dirt from direct contact with the porous roll.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the drawings, reference numerals 1 to 6 denote the same parts as those of the conventional example shown in FIG. 4, and the description thereof will be omitted. . In the present invention, a porous roll 10 for lightly sandwiching the printing paper 1 is arranged between the dryer 3 and the cooling roll 5, and the porous roll 10 is made of soft material such as sponge as shown in FIG. A cooling water passage 11 for supplying water is formed on the inner surface of the paddle porous body, and pipes 12 connected to both ends of the cooling water passage 11 are connected to a pipe 14 via a rotary joint 13.

Thus, water seeps out from the surface of the porous roll 10 and the printing paper lightly sandwiched by the porous roll 10 is cooled.

[0009]

[Effect of device]

 As described above, according to the present invention, since the printing paper is lightly pressed between the dryer and the cooling roll to dispose the porous roll in which water seeps out from the cooling water passage inside, the porous roll is the printing paper. Since the distance between the fulcrums is narrowed and vertical wrinkles can be reduced to cool, the wrinkles of the printing paper can be reduced and the heated printing paper can be cooled, so that the number of cooling rolls can be reduced and the cooling rolls Since the temperature of the printing paper has dropped at the entrance, the cooling roll is less likely to be contaminated with ink, making maintenance easier.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a porous roll.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a side view showing a conventional example.

FIG. 5 is a nozzle layout diagram in a dryer in another conventional example.

[Explanation of symbols]

 1 Printing Paper 3 Dryer 5 Cooling Roll 10 Porous Roll 11 Cooling Channel

Claims (1)

[Scope of utility model registration request] 1. A printing paper drying apparatus having a dryer and a cooling roll on a running path of the printing paper, wherein the printing paper is lightly pressed between the drying machine and the cooling roll so that water is inside the cooling water passage. An apparatus for drying printing paper, characterized in that a porous roll that bleeds is provided.