KR101378523B1 - Pinting object sevicing-collecting device - Google Patents

Abstract

The present invention relates to a feeding-collecting device of printing objects for digital printing, which enables more than two printing objects mounted on one digital printer to keep the feeding and collecting tension and the feeding speed constant. The feeding-collecting device comprises a feeding shaft where a supply roll with a printing object reeled is installed thereon; a first transport guide which transfers the printing objects supplied from the supply role to the lower side of a head unit; a second transport guide which discharges the printing objects with the printing finished by the head unit; and a collecting shaft parallel with the supply shaft and where a collecting roll rotating by a collection driving means so as to wind the printing objects discharged from the second transport guide is installed thereon. On at least any one of the supply shaft and the collection shaft, a middle roll supporter, which is arranged between the parts where more than two printing objects are adjacent in the width direction, and external roll supporters, which are respectively arranged on both ends of the most outer side of the more than two printing objects, are installed. And the printing object positioned on one side of the middle supporter is able to relatively rotate against the printing object positioned on the other side.

Description

Printed object supply recovery device for digital printing {Pinting object sevicing-collecting device}

The present invention relates to a printed matter supply recovery device for digital printing, and more particularly, to a digital printing output supply supply capable of maintaining a constant tension and feeding speed at which two or more outputs mounted on one digital printing machine are supplied and recovered. Relates to a device.

When using a long length of output paper in a digital printing press, use a roll of paper on which the output paper is wound. And, the paper to be output should be conveyed at a constant speed under the head of the digital printer while being given a constant tension.

To this end, in the prior art, as shown in FIGS. 1 and 2, the first and second transfer guides 106 and 108 are installed at the front and the rear of the head 102 of the digital printer 100, respectively. In order to supply the output 10 to the first transfer guide 106, the feed roll 12 is installed on the supply shaft 104 is located in front of the first transfer guide 106, the output output A recovery roll 14 installed on the recovery shaft 110 for winding up and recovering 10 is located at the rear end of the second transfer guide 108.

The recovery shaft 110 is configured as shown in FIG. The supply shaft 104 also has the same configuration as that of the recovery shaft 110, but the tension is applied to the output 10 by rotating the rotation shaft opposite to the recovery shaft 110.

The recovery shaft 110 is supplied with the rotational force by the drive motor 112, the rotational support bearing 114 is supported by the rotation of the recovery shaft (110). At this time, the recovery roll 14 is installed on the recovery shaft 110, the output 10 is wound, and is separated from the recovery shaft 110 when the output is completed.

4 and 5 show a case where two supply rolls 22 and a recovery roll 24 are provided. At this time, the diameters D1 and D2 of the two recovery rolls 24 are different from each other due to various factors such as a difference in mounting timing and an error in tension. Likewise, although not shown, the two feed rolls 22 may have different diameters. Therefore, despite the same rotational angular velocity by the rotation of the same supply shaft 110, due to the different diameters, the feeding speed of the output 20 wound on the recovery roll 24 is a difference occurs. Therefore, excessive tension is applied to the output 20 or the output 20 is excessively loosened, which may adversely affect the output quality.

Japanese Patent Laid-Open Publication No. 01-141073

SUMMARY OF THE INVENTION An object of the present invention devised to solve the above problems is to provide a printout supply recovery device for digital printing which can maintain a constant feeding speed and a feeding speed of two or more outputs mounted on one digital printing machine. It's there.

Still another object of the present invention is to provide an output printing supply device for digital printing, which is capable of outputting in position without lengthwise errors by maintaining a constant feeding amount even when outputting two or more outputs.

The present invention for achieving the above object, the supply shaft which is provided with a feed roll wound the output; A first transfer guide for transferring an output object supplied from the supply roll to a lower portion of the head part; A second transfer guide for discharging the outputted output completed by the head unit; A recovery shaft parallel to the supply shaft and provided with a recovery roll which is rotated by a recovery driving means to wind the output discharged from the second transfer guide, wherein at least one of the supply shaft and the recovery shaft includes: An intermediate roll support disposed between the two or more outputs adjacent to each other in the width direction, and an outer roll support disposed at both ends of the outermost side of the two or more outputs, respectively, and positioned on one side of the intermediate roll support The output is a digital print output supply recovery device, characterized in that relative rotation is possible with respect to the output located on the other side.

The intermediate roll support, the intermediate boss for fixing the supply shaft or the recovery shaft to the inner ring; A drive disk integrally fixed to the center of the intermediate boss; A pair of intermediate radial bearings fixed to both sides of the intermediate boss; A pair of driven disks fixed to each outer ring of the pair of intermediate radial bearings and having an intermediate roll fixing part for fixing a recovery roll or a supply roll; And a differential pinion that is rotatably fixed to the drive disk and is installed to be simultaneously engaged with the driven gear formed on the pair of driven disks.

In addition, the outer roll support, the outer boss for fixing the supply shaft or the recovery shaft to the inner ring; An outer radial bearing fixed to the outer boss; And an outer disk fixed to an outer ring of the outer radial bearing and having an outer roll fixing part on which a recovery roll or a supply roll is fixed.

Through the present invention, even if two or more outputs are freely mounted with a time difference from each other, since a constant feeding speed can be given to each output, error in the width direction of the output does not occur even in a continuous output, so that output quality can be improved. have.

1 is a schematic perspective view of a digital printing machine equipped with a printout supply recovery device for digital printing according to the prior art.
FIG. 2 is a schematic configuration diagram of the digital printer of FIG. 1.
3 is a schematic configuration diagram of the recovery roll of FIG. 1.
4 is a schematic perspective view of a digital printing machine equipped with two outputs in FIG. 1.
5 is a schematic configuration diagram of the recovery roll of FIG. 4.
6 is a schematic perspective view of a digital printing machine equipped with a printout supply recovery device for digital printing according to an embodiment of the present invention.
7 is a schematic configuration diagram of the recovery roll of FIG. 6.
8 and 9 are partially enlarged views of FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In adding reference numerals to the components of the following drawings, it is determined that the same components as possible, even if displayed on the other drawings as possible, and unnecessarily obscure the subject matter of the present invention Detailed descriptions of well-known functions and configurations will be omitted.

6 and 7 will be described with reference to FIGS. 6 and 7 equipped with a digital printing output supply recovery device according to an embodiment of the present invention.

The output printed material supply recovery device for digital printing can accurately output the printed object on the recovery roll 34 without an error in the conveying direction of the output object 10 even if a plurality of supply rolls 32 and recovery rolls 34 are installed in one device. 10) is characterized by having a cold. The digital output printed matter supply recovery device having such a characteristic includes a supply shaft 204 in which a supply roll 32 on which the output 30 is wound and an output object supplied from the supply roll 32 ( A first transfer guide 206 for transferring the lower portion 30 to the lower portion of the head portion 202, a second transfer guide 208 for discharging the output 30 output by the head portion 202, and It includes a recovery shaft 210 is installed parallel to the supply shaft 204 and the recovery roll 34 is rotated by the recovery driving means to wind the output 30 discharged from the second transfer guide 208. do. In particular, at least one of the supply shaft 204 and the recovery shaft 210, the intermediate roll support (224, 240) disposed between the two or more outputs 30 adjacent to each other in the width direction, and the two or more blood Outer roll supports 242 and 244 are disposed at both ends of the outermost side of the output 30, respectively.

The recovery shaft 210 is connected to the driving motor 212 which is a recovery driving means and rotated to provide tension to the output 30. In addition, the clutch 220 is installed on the recovery shaft 210 to maintain the limit of the tension applied to the output 30 and not reverse.

However, if the supply roll 32 is free to rotate, the tension applied to the output 10 in spite of the rotation of the recovery roll 32 may be reduced or disappeared, in particular the recovery roll 34 is rotated If it stops thereafter, the supply roll 32 continues to rotate in accordance with the rotational inertia, there is a problem to further release the output (10). Therefore, a drive motor as a supply driving means (not shown) such that a constant tension exists in the output 30 positioned between the recovery roll 34 and the supply roll 32 by the rotation of the recovery roll 34. ) Is installed on the supply shaft 204 and provides tension to the output 30 due to rotation in a direction opposite to the direction in which the output 30 is conveyed. Likewise, the supply shaft 204 may be equipped with a clutch (not shown).

The first transfer guide 206 and the second transfer guide 208 may be made of a roller as in the embodiment of the present invention, but various design changes are possible.

The intermediate roll supporting members 224 and 240 may include an intermediate boss 233 for fixing the supply shaft 204 or the recovery shaft 210 to an inner ring, and a driving disk integrally fixed to a central portion of the intermediate boss 233. 231 and a pair of intermediate radial bearings 234 and 236 fixed to both sides of the intermediate boss 233; A pair of driven disks 226 and 228 fixed to each outer ring of the pair of intermediate radial bearings 234 and 236 and having a middle roll fixing part 234 and 236 to which the recovery roll 32 or the supply roll 34 is fixed, and the drive And a differential pinion 238 fixed to the disk 231 so as to be simultaneously engaged with the driven gears formed on the pair of driven disks 226 and 228.

The intermediate boss 233 is fixed to the inner shaft of the supply shaft 204 or the recovery shaft 210 to rotate integrally. In addition, the driving disk 231 is integrally fixed to the intermediate boss 233 and rotates together. At this time, as shown in FIG. 8, the intermediate bosses 233 may be divided into two or may be installed in one.

The intermediate radial bearings 234 and 236 rotate and support the driven disks 226 and 228 to allow relative rotation with respect to the supply shaft 204 or the recovery shaft 210.

The driven disks 226 and 228 are rotatably supported with respect to the intermediate radial bearings 234 and 236, and the recovery roll 32 or the supply roll 34 is integrally rotated. In addition, driven gears are formed on surfaces of the driven disks 226 and 228 facing the driving disk 231. The differential pinion 238 is rotatably fixed to the driving disk 231, and the differential pinion 238 protrudes to both sides with respect to the driving disk 231 to the driven gear of the driving disk 231. Match.

As a result, the rotational force of the supply shaft 204 or the recovery shaft 210 is transmitted to the driven disks 226 and 228 by the differential pinion 238 via the driving disk 231 and the driven disks 226 and 228. ), The recovery roll 32 or the supply roll 34, which is fixed integrally thereto, rotates.

However, when a difference in tension occurs, the pair of driven disks 226 and 228 rotate relative to each other by the rotation of the differential pinion 238, and as a result, the rotation of the adjacent collection roll 32 or the supply roll 34 is rotated. The angle will be different.

The outer roll supports 242 and 244 may include an outer radial bearing 250 that is fixed to an outer boss 252 that fixes the supply shaft 204 or the recovery shaft 210 to an inner ring, and the outer radial bearing ( It is characterized by having an outer roll fixing part 248 that is fixed to each outer ring of 250 and to which the recovery roll 34 or the supply roll 32 is fixed.

Accordingly, the outer roll supports 242 and 244 are freely rotatable with respect to the supply shaft 204 or the recovery shaft 210, but are driven by the recovery roll 32 or the supply roll 34. It rotates integrally with the driven disk (226, 228) by the rotation force of the).

therefore. The recovery roll 34 or the supply roll 32 is installed between the outer roll fixing part 248 and the intermediate roll fixing part 234 and 236 or between adjacent intermediate roll fixing parts 234 and 236, and the supply shaft 204 or the collecting part is provided. Rotation is possible relative to the shaft 304.

The printed matter supply recovery device for digital printing according to the first embodiment of the present invention is basically configured as described above. The operation method of the present invention will be described below.

First, the plurality of supply rolls 32 and recovery rolls 34 are mounted on the supply shaft 204 or the recovery shaft 304.

When the output operation is started, the output 30 wound on the supply roll 32 is rewound to the recovery roll 34 after the output is completed. If the intermediate roll supports 224 and 240 have the same diameter of the supply roll 32 or the recovery roll 34 positioned at both sides thereof, both sides rotate at the same speed so that the output 30 has a constant feed rate. I can have it.

In addition, when the feed rate is changed due to the difference in the diameter wound on the feed roll 32 and the recovery roll 34 in which the plurality of outputs 30 are wound, the intermediate roll supports 224 and 240 are positioned at both sides thereof. Different angular velocities of the feed roll 32 or the recovery roll 34 can be allowed. Therefore, the intermediate roll supports 224 and 240 allow the output 30 to always have a constant feed speed by the same tension (same torque).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It can be understood that

10,20,30: Output 12,22.32: Feed roll
14, 24, 34: recovery roll 100, 200: digital printing machine
102, 202: head 104,204: supply shaft
106,206: First conveyance guide 108,208: Second conveyance guide
110,210: Recovery shaft 112,212: Drive motor
114,214: rotary support bearing 220: clutch
224,240: intermediate roll support 226,228: driven disc
230,232: middle roll fixing part 231: drive disk
233: middle boss 234,236: middle radial bearing
238: differential pinion 242,244: outer roll support
246: outer disk 248: outer roll fixing
250: outer radial bearing 252: outer boss

Claims (3)

A supply shaft on which a feed roll on which outputs are wound is installed;
A first transfer guide for transferring an output object supplied from the supply roll to a lower portion of the head part;
A second transfer guide for discharging the outputted output completed by the head unit; And
A recovery shaft parallel to the supply shaft and provided with a recovery roll which is rotated by a recovery driving means to wind the output object discharged from the second transfer guide,
At least one of the supply shaft and the recovery shaft is disposed between two or more outputs adjacent to each other in the width direction to rotate the supply roll or the recovery roll and to rotate integrally with the supply shaft or the recovery shaft. An intermediate roll support and an outer roll support disposed at both ends of the outermost side of the two or more outputs to rotate integrally with the supply roll or the recovery roll and freely rotate relative to the supply shaft or the recovery shaft. Installed,
The output to be positioned on one side of the intermediate roll support can be rotated relative to the output to be located on the other side,
The intermediate roll support,
An intermediate boss fixing the supply shaft or the recovery shaft to an inner ring;
A drive disk integrally fixed to the center of the intermediate boss;
A pair of intermediate radial bearings fixed to both sides of the intermediate boss;
A pair of driven disks fixed to each outer ring of the pair of intermediate radial bearings and having an intermediate roll fixing part for fixing a recovery roll or a supply roll; And
A differential pinion rotatably fixed to the drive disk and installed to be simultaneously engaged with a driven gear formed on the pair of driven disks;
The outer roll support,
An outer boss fixing the supply shaft or the recovery shaft to an inner ring;
An outer radial bearing fixed to the outer boss; And
And an outer disk fixed to an outer ring of the outer radial bearing, the outer disk having an outer roll fixing part to which a recovery roll or a supply roll is fixed. delete delete

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