JPH0664877U - Plate alignment device for printing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] The printing efficiency is improved by easily and quickly aligning the printing plate on the plate cylinder without performing test printing. [Structure] It is wound around the plate cylinder 1 so that it can be detached and attached
, A loupe 5 on which the loupe index 6 is drawn, a support 9 for supporting the loupe 5, and a support 9 formed on both ends of the plate cylinder 1 for detachably supporting the support 9. A support means 4 for positioning the loupe index 6 at a predetermined position and a plate position adjusting device for aligning the plate index 3 with the loupe index 6 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plate alignment device for a printing press that aligns a printing plate on a plate cylinder.

[0002]

[Prior art]

 In a conventional printing machine, a printing plate is wound around a plate cylinder, the printing plate on the plate cylinder is pre-positioned by an adjusting device, and a test print is performed, and then the position is re-registered based on the result of the test printing. .

[0003]

[Problems to be solved by the device]

 In the case of the above-mentioned conventional printing press, since the position of the plate on the plate cylinder is adjusted from the result of the test printing, it takes a lot of labor and time to position the plate, resulting in poor printing efficiency and high cost. There is a problem.

In consideration of the above points, the present invention is to perform plate alignment of a printing press for improving printing efficiency by easily and quickly aligning the plates on the plate cylinder without performing test printing. Intended to provide equipment.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the plate aligning device of the printing press of the present invention is removably wound around a plate cylinder, and a printing plate on which a plate index is drawn and a loupe index are drawn. A magnifying glass, a supporting tool for supporting the magnifying glass, a supporting means formed at both ends of the plate cylinder for detachably supporting the supporting tool and positioning the index for the magnifying glass at a predetermined position, and a printing plate for the magnifying glass. And a plate position adjusting device for aligning the index.

[0006]

[Action]

 The plate aligning device for a printing press of the present invention constructed as described above detachably winds the plate on which the plate index is drawn on the plate cylinder, and supports the loupe on which the loupe index is drawn. And the support means at both ends of the plate cylinder detachably supports the loupe index so that the loupe index is positioned at a predetermined position, and the adjustment device positions the plate index on the loupe index. Since they are aligned with each other, the printing plate can be positioned on the plate cylinder without performing a test printing, and the positioning can be performed easily and in a short time, the printing efficiency is improved, and the cost is reduced.

[0007]

【Example】

 One embodiment will be described with reference to FIGS. 1 to 4. 1 is a plate cylinder, 2 is a printing plate removably wound around the plate cylinder 1, 3 is a printing plate in which "-", "+" is drawn on the upper part of the printing plate 2, and "|" is drawn on the lower part. The indexes 4, through holes which are formed at predetermined positions on both ends of the plate cylinder 1 and constitute a supporting means, 5 are a loupe on which the loupe index 6 is drawn, 7 are pentagons fixed by penetrating the loupe 5. The support base 8 has a shape of a support, and two support pins 8 are planted on one side of the lower surface of the support 7. The support base 7 and the support pins 8 constitute a support tool 9 for the loupe 5. By inserting the support pin 8 of 9 into the through hole 4, the loupe index 6 is positioned at a predetermined position.

Next, the alignment of the printing plate 2 will be described. The printing plate 2 is wound around the plate cylinder 1, the support pin 8 of the support 9 is inserted into each through hole 2, and each loupe index 6 is positioned at a predetermined position. Next, an adjusting device (not shown) aligns the index 6 for the loupe on the right end with the index 3 for the plate on the upper right side of the plate 2 shown in FIG. 4, and the index 6 for the loupe on the left end is printed. The plate index 3 on the upper left side of the plate 2 is aligned, and the plate index 3 on the lower side of the plate 2 is aligned with the loupe index 6 on the right rear side.

Therefore, the printing plate 2 can be aligned with a predetermined position of the plate cylinder 1, and the main printing can be directly performed without performing the test printing. It should be noted that the plate index 3 is not limited to the one shown in the drawing, and it is desirable that the plate 2 is drawn at two locations when the plate 2 is small, and at the four corners when the plate 2 is large. In addition to being installed, one loupe index 5 may be sequentially moved and used. Further, the present invention can be applied to both a monochromatic machine and a multicolor machine.

[0010]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. The plate aligning device of the printing machine of the present invention detachably winds the plate 2 on which the plate index 3 is drawn on the plate cylinder 1, and the loupe 5 on which the loupe index 6 is drawn is mounted on the support 9. And the support means 9 at both ends of the plate cylinder 1 detachably supports the support tool 9 so that the loupe index 6 is positioned at a predetermined position. Since the plate index 3 is aligned, the printing plate 2 on the plate cylinder 1 can be positioned without performing a test printing, and the positioning can be performed easily and in a short time. Can be improved and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a plan view of the magnifying glass support of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a plan view of the printing plate of FIG.

[Explanation of symbols]

 1 plate cylinder 2 printing plate 3 index for printing plate 4 through hole 5 loupe 6 index for loupe 9 support

Claims (1)

[Scope of utility model registration request] 1. A printing plate which is removably wound around a plate cylinder and on which a printing plate index is drawn, a loupe on which a loupe index is drawn, a support for supporting the loupe, and a plate for the plate cylinder. Support means formed at both ends for detachably supporting the support and positioning the loupe index at a predetermined position, and a plate position adjusting device for aligning the plate index with the loupe index. And a plate aligning device for a printing machine.