JPS5839458A - Multi-color printing device for vessel with circular cross-section and groove in its circumferential direction - Google Patents

Abstract

PURPOSE:To perform continuous multi-color printing on the flat section and grooved section of a vessel by performing figure transfer on the grooved transfer face from a grooved section stamping roll and then performing figure transfer on a flat transfer section from a stamping roll after the grooved transfer face is moved back. CONSTITUTION:A transfer drum 1 that is fixed on a rotating shaft 2 is rotated counterclockwise, and when the grooved transfer face 4 comes to the position of a grooved section stamping roll 11, the face 4 is projected to make a first figure transferred by the roll 11, and when the transfer face 4 comes to the position of a flat face stamping roll 12, the transfer face 4 is made to retreat against a spring 16 by means of a cam 7, and a second color figure is transferred to the flat transfer face 3 by the roll 12 and then the transfer face 4 is projected. When the transfer faces 3 and 4 come to the position of a vessel A that is supported rotatably, the transferred figure of the first and second colors that is transferred on the transfer faces 3 and 4 is transferred to the flat section (b) and grooved section (c) of the vessel A, removing residual ink by cleaning rollers 13 and 14.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gravure offset printing method for continuously and simultaneously performing multicolor printing on a pottery container having a circular cross section and a constricted portion in the circumferential direction.

When simultaneous multi-color printing is performed on a circular cross-sectional container using the conventional gravure offset printing method, 511 color images are transferred onto the transfer drum by the first stamping roll, and then the second one is transferred by the second stamping roll.
When transferring a color image, there is a problem with IA when the engraving rail in the latter stage peels off the 511-color transferred image on the transfer drum.To solve this problem, retransfer called releasable OA is used. There is a method in which the drum is placed between the stamp roll and the transfer drum, but when using this method, the stamp roll on the second stage after the fourth step interferes with the transferred image that has already been transferred onto the transfer drum, causing damage to it. Therefore, the inventors of the present invention provided a retractable transfer surface on a part of the transfer surface of the transfer drum, and applied the stamping row (yo) of the previous stage to the retractable transfer surface. 1-color O-image transfer The first color transfer image is engraved, and the second-stage O-engraved roll is used to move the IK 2-color image back.
When transferring the first color transfer image, I decided to move back the retractable transfer image on which the first color transfer image was transferred.I have already transferred 91 colors and 11 colors! He proposed a simultaneous multi-color printing device that does not interfere with the transfer process (see Japanese Utility Model Application Publication No. 1'4201, black). It was made for the purpose of providing a printing parent electrode which is capable of continuous and simultaneous multi-color printing of the o3Pvm part and the constriction part of a container having a circular section and a constriction part in the circumferential direction. , in the present invention, Yong i
The transfer drum that transfers an image to the IO flat box part and the constriction part is equipped with a flat part transfer surface that transfers the image to the flat part of the container and a constriction part transfer surface that transfers the image to the constriction part of the container. II a s flat mvs The transfer INK protrudes and retreats, and in the state in which it protrudes, an image is transferred from one of the four engraved circles on the constriction, and the other one of the engraved circles is transferred to the flat surface transfer. It moves backwards when transferring an image.

As a result, the first color transfer image already transferred to the constriction transfer surface O is not interfered with when transferring the second color transfer image to the flat transfer surface. Then, the constriction transfer surface where the first color O transfer weight was transferred is transferred to the second color image 4. The flat part on which is transferred protrudes from the transfer surface, and the transfer door has a circular cross section of 9
Since the container has seven necks in the circumferential direction, multi-color printing can be performed continuously and simultaneously on the plane part and the neck part of the container.The present invention will be described in detail below with reference to the drawings. In the figure, a transfer drum, indicated as a whole by 1, is rotatably fixed to a rotating shaft 2 and driven by a drive device (not shown), and has a circular cross section (for example, synthetic resin shown in FIGS. 4 I and II). Simultaneous multi-color printing is performed on the flat part 1 and the constriction SO of the container which is large and has a constriction in the circumferential direction.For this reason, the transfer drum 1 has a flat part transfer surface on which images are transferred to the flat part of the container. Neck part 0 of 3 and 11
A constriction transfer surface 4 for performing image transfer is provided. In the illustrated example, the constricted portion transfer surfaces 4 are provided at five locations at equal intervals and protrude and retreat with respect to the flat portion transfer surface 3. In Figures 1 and 1g2, the constriction transfer W14 is shown protruding from the plane transfer surface 3. o In the illustrated example, a pane and a cam are used to move the constriction transfer surface 4 back to the protrusion gate. The constriction portion transfer II 4 is fixed to the tips of the two rods 5]', and each rod 5
extends through a guide corner 6 fixed to the transfer drum 1 and a slide block 8 connected to a cam means 7, and a stop nut 9 is screwed to the rear end.

And large guide block 6 and loft 5! A compression spring i0:m is interposed between -Is, and this compression spring 10
(The fin transfer surface 4 is urged into a protruding state and is retracted against the fin panel 10 by the cam hand R7. The plane stamp for transferring an image to the constriction transfer area 4 shows the arrangement of the first running roller 13, the second constriction roller 14, and the container arm with respect to the transfer drum 1.As the stamping roll, the constriction transfer surface It consists of a constriction stamping ring 1i for transferring an image to a flat part transfer surface 3, and a flat stamping ring 12 for transferring an image to a plane transfer surface 3.

Next, the operation will be explained mainly with reference to diagram s3.

The transfer drum 1 is rotated counterclockwise as shown in the drawing by the rotating shaft 2, and when the constriction transfer surface 4 comes to the position of the constriction stamping mark 11, it protrudes and is engraved in the conventional manner. The transfer drum i, on which the image of the first color is transferred by the hole stamp roll 11, further rotates, and the image of the first color is transferred, and the round fin transfer surface 4 is transferred to the flat stamp roll 12. When you get into position,
The neck and eaves transfer surface 4 is moved back against the spring 10 by the cam means 7, and the second color image is transferred to the plane transfer surface 3 by the plane marking four-wheel 12 in a conventional manner. ◇ At that time, the constriction transfer surface 4 moves backward, so that the first color transfer image transferred back to the constriction transfer surface 4 is not interfered with by the flat imprint roll 12 so that the constriction transfer surface 4 moves backward. When the second color image is transferred to the transfer roller 3, the constriction transfer surface 4 protrudes again, and when the transfer drum ^1□ further rotates and reaches the position of the rotatably supported container arm, the flat surface is rotated in the conventional manner. The images of the first and second colors transferred to the surface 3 and the constriction transfer surface 4 are image-transferred to the flat surface of the container O and the constriction C to perform simultaneous multicolor printing. The remaining ink is removed from the fin transfer surface 4 and the flat transfer surface 3 by both cleaning rows 213.14 in the same manner as before, and the first and second color images are transferred again in the manner described above. Then, the transferred material is transferred to the flat surface of the container, the bottom and the fin, and simultaneous multicolor printing is performed. These operations are performed continuously.

Although the above is a case in which multicolor printing is performed in the axial direction of the container, the present invention can also be implemented in a case in which multicolor printing is performed in the 10-position direction of the container or in a combination of the circumferential direction and the axial direction. In this case, the constricted portion transfer surface may be divided into two, or a portion of the flat portion transfer surface may be made protrusive and retractable.

In addition, in the illustrated example, five sets of constriction transfer surfaces are provided b
However, it is of course not limited to this, and can be determined as appropriate depending on the diameter of the transfer drum, the size of the printing surface, the printing speed, etc., as in the case of a transfer drum for ordinary circular cross-section protection printing. can.

Further, the means for advancing and retracting the constriction transfer surface is not limited to the above-mentioned spring and cam means, and for example, an electromagnet or the like may be used to advance or retreat the constriction transfer surface.◎ That's all for WJ! , FJl, according to the present invention, it is possible to continuously and simultaneously perform multicolor printing on a container having a circular cross section and a constriction in the circumferential direction. Multi-color printing can be performed more efficiently than when printing a color and then using a separate device to print a second color on the neck or flat surface of the container.

[Brief explanation of the drawing]

Fig. 1 and Fig. 2 show an embodiment of the transfer drum of the multicolor printing device according to the present invention, Fig. 1 is a plan view, and Fig. 2 is a sectional view taken along the line - - in Fig. 1. . FIG. 3 is a plan view showing the positional relationship between the transfer drum, the marking roller, the cleaning roller, and the container. They are a front view and a longitudinal cross-sectional view. 1... Transfer drum 3... One plane portion transfer surface 4...
Constriction transfer surface 11, 12...Skewer imprint roll 1
3.14...Cleaning roll A@...Container Figure 1 - -u Figure 2

Claims (1)

[Claims] Container 031L with a circular cross section and a constriction in the circumferential direction
I! s and (fin ilK continuous simultaneous multi-color printing rounded 079 via-off seven-base printing equipment KspIIA, so O printing equipment Hiro at least 2 years O stamp-1, and those stamps m1-ktj-b@) The image is transferred and the 5i
io transfer drum which transfers the image to the flat part and the constriction part), O transfer drum cover, the flat part transfer surface which transfers the image to the flat part of the container and the container O (which transfers the image to the constriction part). The constriction transfer surface protrudes and follows the plane transfer w#C, and the image is transferred from one of the stamping holes in a good center position, and 1iis
A multicolor printing device for containers with a circular cross section and a constriction in the circumferential direction, which uses a tube machine that moves backward when an image is transferred from one O in addition to the stamping roll to the rolling surface.