JP2003237018A - Sheet-fed printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet-fed printer in which a packaging print from printing to punching and/or scoring is continued to the printing, varnish coating, drying, the punching and/or the scoring to be efficiently performed, a vibration due to a load change of a finishing unit for punching and/or the scoring is hardly transmitted to a printing unit to eliminate a printing fault, and to provide a stable printing quality. <P>SOLUTION: The sheet-fed printer comprises the printing unit 2 for printing, the varnish coating unit 3 for coating varnish on a printing surface, drying units 4, 400 for drying printed sheets 10, and the finishing unit 5 for punching and/or scoring the printed sheet 100, sequentially provided from a supply side of the sheet 100. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-fed printing machine, and more particularly to a sheet-fed printing machine for package printing in which printing, punching, and / or creasing are performed on a packaging material. .

[0002]

2. Description of the Related Art No conventional sheet-fed printing press is integrally provided with a finishing unit section having a punching and / or creasing device for printing the package. Package printing up to creasing could not be continuously performed in one sheet-fed printing press.

However, as a conventional sheet-fed printing press, there is a sheet-fed printing press provided with a perforating device for making a perforation on a printed sheet at the downstream side when viewed from the sheet feeding side.
No. 207247.

This sheet-fed printing press, in order from the most upstream,
Printed by a sheet feeding device for feeding sheets, a sheet feeding section including a sheet feeding table, a printing unit section including a plurality of printing units for printing sheets next, and a printing unit section A perforated machine that inserts perforations in the sheet, and a delivery cylinder, sprocket, chain, pile board, etc. at the most downstream side, and an impression cylinder of each printing unit or an impression cylinder of the sewing machine. Is a sheet-fed printing machine in which a drying device including a UV lamp for drying a sheet printed by each printing unit is provided at a position facing the sheet feeding unit, and a sheet feeding unit and a sheet discharging unit are integrally configured. .

However, in the package printing in which the packaging material is printed, punched, and / or creased, varnish coating for protecting the surface of the packaging material and giving a high-class feeling, and further punching and / or creasing. However, since the above disclosed technology does not have any of the devices that make up the finishing unit, the above technique does not include coating, punching, and / or varnishing.
Or, it is not possible to continuously perform package printing up to creasing in one sheet-fed printing press.

Further, in the above disclosed technology, since the sewing machine is provided directly behind the printing unit section, the load fluctuation due to the load in the perforation processing may cause the finishing unit section to vibrate. . In such a case, this vibration may be transmitted to the printing unit portion, which may cause printing defects such as eyelashes and shocks, which may be a factor of lowering print quality.

[0007]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and package printing from printing to punching and / or creasing includes printing, varnish coating, drying, punching, and This is done efficiently with one sheet-fed printing machine in succession to scoring and / or creasing, and it is difficult to transmit vibrations due to load fluctuations in the finishing unit that performs punching and / or creasing to the printing unit, resulting in defective printing. It is an object of the present invention to provide a sheet-fed printing press that eliminates the problem of stable printing quality.

[0008]

According to a first aspect of the present invention for solving the above-mentioned problems, a printing unit section 2 for printing and a printing surface are printed in order from the supply side of a sheet 100. A varnish coating unit 3 for coating a varnish on the sheet, a drying unit 4, 400 for drying the printed sheet 100, a punching and / or crease finishing of the printed sheet 100. The main feature is that the unit portion 5 is provided.

Next, the invention according to claim 2 is characterized in that the drying means 44 of the drying unit section 4 is installed in the conveying path of the chain 43.

A third aspect of the present invention is characterized in that the drying means 405 of the drying unit section 400 is installed above the transfer drum 404.

The invention according to claim 4 is characterized in that the barrel 52 constituting the finishing unit portion 5 is given a magnetic force.

According to a fifth aspect of the present invention, the body 52 constituting the finishing unit section 5 is placed upside down with respect to the printed image.
And / or adjustable in the lateral direction.

According to a sixth aspect of the present invention, the cylinders 402, 403, 40 provided on the paper feed side of the finishing unit section are provided.
No. 4 can be tilted, and diagonal image adjustment is possible

Further, the invention according to claim 7 is characterized in that a drive source 8 for driving the finishing unit section 5 is independently provided.

[0015]

DETAILED DESCRIPTION OF THE INVENTION A sheet-fed printing press according to an embodiment of the present invention will be described below with reference to FIGS.

[0016]

1 is a schematic view showing a sheet-fed printing press according to a first embodiment of the present invention. FIG. 2 is an external view of a main portion of a punching device portion which is one of the finishing unit portions. FIG. 3 is a schematic view showing a sheet-fed printing press according to a second embodiment of the present invention.

First, a sheet-fed printing press according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 is a sheet feeding device 10 that separates and feeds the sheets 100 stacked on a paper stack 12 by a feeder device, a sheet separating device, or the like (not shown), and a sheet sent from the sheet feeding device 10. A paper feed unit 2 including a feeder board 11 for conveying the sheet 100 to the next step receives a sheet 100 conveyed from the paper feed unit 1 by a paper feed cylinder 24, and a plate cylinder 20
a, the blanket cylinder 20b, the impression cylinder 20c and the like, the first printing unit 20 for printing the first color, the sheet 100 on which the first color is printed is received from the impression cylinder 20c via the transfer cylinder 25a, 21a, the blanket cylinder 21b, the impression cylinder 21c, etc., the 2nd printing unit 21 which prints the 2nd color, the sheet 100 on which the 2nd color was printed from the impression cylinder 21c
5b, and the third printing unit 22 for printing the third color by the plate cylinder 22a, the blanket cylinder 22b, the impression cylinder 22c, etc., and the sheet 100 on which the third color is printed are passed from the impression cylinder 22c. Received via the cylinder 25c, the plate cylinder 23
It is a printing unit portion including a fourth printing unit 23 that prints the fourth color by using a, the blanket cylinder 23b, the impression cylinder 23c, and the like.

Next, 3 is a varnish for receiving the sheet 100 printed by the printing unit section 2 via the transfer cylinder 25d and coating the surface of the sheet 100 with varnish by the varnish cylinder 32, the impression cylinder 31 and the like. The varnish coating unit section 4 including the coating unit 30 is the ink printed by the printing unit section 2, and the varnish coating unit section 3
Device 4 for drying varnish coated with
It is a drying unit section consisting of zero. This drying device 40
Is a chain 43 having a gripper (not shown) for receiving and conveying the sheet 100 from the impression cylinder 31.
Sprockets 41, 4 for moving this chain 43
2. A UV lamp 44 or the like which is installed in the transport path of the chain 43 and serves as a drying means for drying. The sprockets 41, 42 are integrally attached to a body (not shown). As described above, in the drying device 40 of this embodiment, the UV lamp 44 is connected to the chain 43.
Since it is installed in the transport path of No. 3, it is not necessary to take an extra installation space, and other devices such as a heat dissipation device including a heat dissipation fan (not shown) can be easily attached. In the drying device 40 of this embodiment, UV is used as the drying means.
Although the lamp 44 is used, an IR lamp or warm air may be used.

Further, 5 receives the sheet 100 dried by the drying unit section 4 from the chain 43 to the impression cylinder 51,
This is a finishing unit portion including a punching device 50 that punches out the developed shape of the package by the punching cylinder 52.
This punching device 50, as shown in FIG.
1. A punching cylinder 52, and a plate material 53 is attached to the outer circumference of the punching cylinder 52 by the magnetic force of a magnet (not shown) embedded in the outer circumference of the punching cylinder 52.
A punching blade 53a (solid line portion) for making a developed shape of the package and a crease blade 53b (dashed line portion) for making a crease of the package are formed on the surface of the plate material 53. Punching device 50 configured in this way
When the sheet 100 passes between the impression cylinder 51 and the punching cylinder 52, the unfolded shape of the package is punched with a slight thickness or only a small portion not punched.

Thus, in this embodiment, the punching blade 53
a, the plate material 53 on which the crease blade 53b is formed is attached by the magnetic force of a magnet (not shown) embedded in the outer periphery of the punching cylinder 52, so setup change is necessary for punching different packages of other sizes or the like. If
Unlike conventional punching cylinders that have a punching blade integrally provided on the punching cylinder, it is not necessary to manufacture the punching cylinder according to each package, and simply changing the plate material 53 allows quick, quick setup change. it can. As a result, the work efficiency of printing a small lot of packages can be improved.

Next, reference numeral 6 denotes a paper discharge unit comprising a paper discharge device 60 for transporting and stacking the sheets 100 punched by the finishing unit 5 downstream (on the left side in the drawing). The paper discharge device 60 receives a sheet 100 from the impression cylinder 51 and a chain 64 having a gripper (not shown) for conveying the paper 100 to the downstream side, a paper discharge cylinder 61 for moving the chain 64, and this paper discharge. A first sprocket 62 that is fixed to the body 61 and rotates integrally, a second sprocket 63 that rotates in conjunction with a chain 64, an operation panel 66 for setting discharge conditions in a discharge device, and a finished sheet 100. It is composed of a paper loading platform 65 for loading.

Therefore, in the sheet-fed printing press of this embodiment,
Sheets 10 conveyed from the paper feed unit 1 to the printing unit unit 2
After printing four colors in the printing unit section 2, 0 is transferred to the varnish coating unit section 3 and part or all of the surface thereof is coated with varnish. Next, the varnish-coated sheet 100
Is transferred to the drying unit section 4, and the ink and varnish are dried. The dried sheet 100 is delivered to the finishing unit section 5, and is punched by the punching device 50.
The predetermined package is punched out with a slight thickness such that it can be completely removed by pushing with a human finger, or with a very small portion left unpunched. A large load is applied to this punching and creasing process, and the load fluctuation due to the load may cause vibration. Next, the punched sheet 100 is delivered to the sheet discharge section 6, and is conveyed downstream by a gripper (not shown) attached to the chain 64, and the sheet stacking board 65 is provided.
Then, the paper is separated from the gripper and stacked on the paper stacking board 65, and a series of steps is completed.

As described above, in the sheet-fed printing press according to the present embodiment, package printing from printing to punching and / or creasing is performed from sheet feeding of sheet 100 to printing, varnish coating, drying and punching. , Such as paper stacking, the printing is performed continuously in one sheet-fed printing press, and work efficiency and quality can be stabilized.

Since the punching device 50 is provided after the varnish coating unit 30 and the drying device 40, the punching process is performed in a state where the ink on the printing surface of the sheet 100 is completely dried. The punching cylinder 52 does not cause scratches or the like on the printing surface.

Further, since the varnish coating unit section 3 and the drying unit section 4 are arranged between the printing unit section 2 and the finishing unit section 5 to provide a distance, the vibration generated in the finishing unit section 5 causes the printing unit to vibrate. It becomes difficult to transmit to the section 2, and printing defects such as eyes and shocks caused by vibration are eliminated, and printing quality is stabilized. Since the sheet 100 is conveyed in the drying unit section 4 by the chain 64, the vibration generated in the finishing unit section 5 is less likely to be transmitted to the printing unit section 2. .

In addition, since the drying device is constructed as one unit, a large-capacity drying means can be centrally provided in one place, and the drying efficiency can be improved.

Next, 7 is a main motor, which is the paper feed unit 1.
Between the first printing unit 20 and the paper feed unit 1,
It is a power source for moving the printing unit unit 2, the varnish coating unit unit 3, the drying unit unit 4, and the paper discharge unit 6. Reference numeral 8 denotes a sub motor, which is a power source for moving at least the finishing unit portion 5, and is provided downstream of the finishing unit portion 5. The power of the main motor 7 is set to be approximately the same as the power of the sub-motor 8 that moves the finishing unit 5 as compared with the case of moving the entire sheet-fed printing press with one motor.

As described above, the power source of the sheet-fed printing press according to the present embodiment is separated from the main motor 7 and the printing unit section 2 which have a small power as compared with the case where the whole sheet-fed printing press is driven by one motor. Since it is composed of the sub-motor 8 arranged at a different position, the vibration due to the rotation of the motor is less likely to be transmitted to the printing unit section 2, and further, there is no need to connect the finishing unit section 5 and the printing unit section 2 with a gear. Further, print defects such as eyelashes and shock eyes caused by vibration are eliminated, and print quality is stabilized.

Next, the sheet-fed printing press according to the second embodiment of the present invention will be described with reference to FIG. The same members as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 3, the drying unit portion 400 of the second embodiment has a varnish coating unit 30.
Transfer drums 402, 4 with grippers (not shown) for receiving the sheet 100 from the impression cylinder 31 of
03, 404, and a drying device 401 including a UV lamp 405 serving as a drying unit provided on the transfer drum 404.
It is composed of. In addition, in this embodiment, the UV lamp 405 serving as a drying means is provided on the upper part of the transfer drum 404.
Drying means is provided behind the varnish cylinder 32 on the impression cylinder 31 of the varnish coating unit section 3 or before the punching cylinder 52 on the impression cylinder 51 of the finishing unit section 5 so that the drying is performed on these impression cylinders. You may

Thus, the drying device 4 of the second embodiment
In 01, since the UV lamp 405 is provided on the upper part of the transfer drum 404, a large capacity or a large number of UV lamps 405 can be installed, and the drying capacity can be improved. Further, the conveyance of the sheet 100 in the drying device 401 is performed by the transfer cylinder 40.
Since I performed it with the trunk arrangement of 2, 403, 404,
In the case of thin sheets, more stable drying is possible.

Further, in the sheet-fed printing press according to the first and second embodiments of the present invention, the printing unit section 2 is used in the finishing unit section 5 for punching and / or creasing.
The printed image printed on the sheet of paper 100 with the punching cylinder 5
The punching blade 53a for forming the developed shape of the package formed on the plate material 53 attached to the No. 2 and the crease blade 53b for making the crease of the package need to coincide with each other without deviation. Therefore, first, in order to be able to correct the deviation in the oblique direction with respect to the conveying direction of the sheet 100, in the first embodiment, the finishing unit section 5 is used.
A cylinder (not shown) integrally provided with the sprockets 41 and 42 provided on the paper feeding side is provided, and in the second embodiment, a transfer cylinder provided on the paper feeding side with respect to the finishing unit 5 is provided. Any of 402, 403, 404
By a mechanism similar to the adjusting device disclosed in Japanese Utility Model Publication No. 6-28271, which is a publicly-invented invention by the applicant of the present invention (not shown), it is possible to adjust the cylinder by tilting it with respect to the axis of another cylinder, particularly the impression cylinder 51. There is.

Furthermore, in order to be able to correct the deviation in the vertical direction and the lateral direction with respect to the conveying direction of the sheet 100, the punching cylinder 52 is arranged in the vertical direction and the lateral direction with respect to the conveying direction of the sheet 100. In order to be adjustable, the plate cylinders 20a, 21a, 22 of the respective printing units 20, 21, 22, 23 described above are adjustable.
A and 23a are provided with a top and bottom (not shown) and a known mechanism that is the same as a lateral position adjusting mechanism.
The correction of the deviation in the oblique direction with respect to the conveying direction of the sheet 100 is the same as that of the adjusting device disclosed in Japanese Utility Model Publication No. 6-28271, in which the punching cylinder 52 for correcting the deviation in the vertical direction and the lateral direction is used. Although a mechanism may be used to incline with respect to the axis of the impression cylinder 51, when the punching cylinder 52 is inclined with respect to the axis of the impression cylinder 51, the impression cylinder 51 is near the center of the punching cylinder 52 and both ends thereof. The contact pressure with and changes, punching and / or creasing cannot be performed with proper pressure, and there is a possibility that proper punching and / or creasing cannot be performed.

As described above, in the present invention, the printed image printed on the sheet 100, the punching blade 53a for forming the developed shape of the package formed on the plate material 53, and the crease for the package are formed. In order to correct the misalignment with the crease blade 53b, in particular, to correct the misalignment in the oblique direction with respect to the conveying direction of the sheet 100, the sprockets 41, 42 provided on the paper feeding side of the finishing unit section 5 are provided. One of the cylinders (not shown) integrally attached with and the transfer cylinders 402, 403, 404 can be adjusted in the direction perpendicular to the conveying direction of the sheet 100, and Since the punching cylinder 52 can be adjusted in the vertical direction and the horizontal direction with respect to the transport direction of the sheet 100 in order to correct the deviation in the vertical direction and the horizontal direction with respect to the transport direction of the paper 100, Les no accurate punching, and /
Alternatively, creases can be made, punching defects can be eliminated, and package folding defects in a post process can be eliminated.

Although the above-described embodiment is applied to the sheet-fed offset printing machine, it can be applied to other sheet-fed printing machines such as a sheet-fed relief printing machine.

[0036]

As described above, in the sheet-fed printing press of the present invention, the printing unit 2 for printing and the coating of the varnish on the printing surface are arranged in this order from the supply side of the sheet 100. Varnish coating unit part 3, drying unit parts 4 and 4 for drying the printed sheet 100
00, since the finishing unit 5 for punching and / or creasing the printed sheet 100 is configured, package printing from printing to punching and / or creasing is performed by printing, varnish coating, and drying. , Punching, and / or creasing,
Efficiently done with one sheet-fed printing machine. Further, since the drive source 8 for driving the finishing unit section 5 is independently provided,
Vibration due to load fluctuation of the finishing unit section 5 for punching and / or creasing is difficult to be transmitted to the printing unit section 2 and printing defects such as eye-catching and shock-eying caused by the vibration are eliminated, and print quality is stabilized. it can.

[Brief description of drawings]

FIG. 1 is a schematic view showing a sheet-fed printing press according to a first embodiment of the present invention.

FIG. 2 is an external view of a main portion of a punching device portion which is one of finishing unit portions.

FIG. 3 is a schematic view showing a sheet-fed printing press according to a second embodiment of the present invention.

[Explanation of symbols]

1 Paper feeder 2 Printing unit section 3 Varnish coating unit 4 Drying unit 5 Finishing unit 6 Paper output section 7 Main motor 8 sub motor 100 sheets

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B41F 23/08 B41F 23/08

Claims (7)

[Claims] 1. A printing unit section for printing, a varnish coating unit section for coating a varnish on a printing surface, and a printed sheet for drying in order from the sheet supply side. 2. A sheet-fed printing press, comprising: a drying unit section; and a finishing unit section for punching and / or creasing printed sheets. 2. The sheet-fed printing press according to claim 1, wherein the drying means of the drying unit section is installed in a chain conveyance path. 3. The sheet-fed printing press according to claim 1, wherein the drying means of the drying unit section is installed on the upper part of the transfer cylinder. 4. The sheet-fed printing press according to claim 1, wherein a cylinder forming the finishing unit has a magnetic force. 5. A body forming the finishing unit section,
The sheet-fed printing press according to any one of claims 1 to 4, wherein the sheet-fed printing press is adjustable in a vertical direction and a lateral direction with respect to a print image. 6. The sheet-fed printing press according to claim 1, wherein a cylinder provided on the sheet feeding side of the finishing unit section can be tilted to adjust a diagonal image. 7. The sheet-fed printing press according to claim 1, wherein a driving source for driving the finishing unit section is provided independently.