JP2012071923A - Printing device and reversing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reversing device which can be easily moved and does not influence accurate positioning of a second printer to a delivery entrance of strip of base material and a printing device provided with the reversing device.SOLUTION: An arrangement position of a strip of base material reversing part which is placed between first and a second printing parts that print a strip of base material is changed corresponding to action of the first and second printing parts. In addition, the strip of base material reversing part has an arrangement position determination means for performing arrangement for conveying a strip of base material. Thereby, the strip of base material reversing part can be easily moved, and dose not influence positioning accuracy to a delivery entrance of a strip of base material of the second printer.

Description

  The present invention relates to a printing apparatus that performs printing on both sides of a band-shaped substrate, and a reversing apparatus for reversing the band-shaped substrate in order to perform double-sided printing in the printing apparatus.

  When performing double-sided printing on a belt-like substrate such as roll paper, prepare two printers and print the surface with the first printer, then reverse the belt-like substrate and use the second printer. There is a technique for realizing efficient double-sided printing by performing continuous printing by printing the back side.

  Such a printing method requires a reversing device for reversing the belt-like substrate between the first printing machine and the second printing machine. The reversing device is, for example, a first turn bar that is attached at an angle of approximately 45 ° with respect to the traveling direction of the belt-shaped substrate, and is disposed on the side of the first turn bar. A turn roll having a rotation axis along the first turn bar and a second turn bar provided so as to be substantially orthogonal to the first turn bar. The conveyed belt-like substrate is folded back by the first turn bar and guided to the turn roll, is folded back by the turn roll and guided to the second turn bar, and is folded by the second turn bar. The front and back are reversed.

  Such a reversing device includes a horizontal type in which turn bars and turn rolls are arranged in parallel to the floor surface on which the reversing device is installed, and a vertical type in which turn bars and turn rolls are arranged in the vertical direction. A type exists. Although the horizontal reversing device requires a relatively large installation area, it can change the conveyance direction of the belt-like substrate to either 90 ° left or right, improving the flexibility of the layout of the printing press can do. On the other hand, although the vertical reversing device is limited in the layout of the printing press, it does not require a relatively large installation area, so that the printing line can be made compact.

What is important for any type of reversing device is the alignment of the strip substrate with respect to the second printing press. In other words, in order to accurately print both the front and back sides of the belt-like base material, the belt-like base material printed by the first printer is reversed by the reversing device, and then accurately aligned. It must be transported to the strip substrate inlet of the second printing press.
In order to solve such a problem, the reversing device is provided with an adjusting mechanism for aligning the belt-like substrate.

JP 2006-219226 A

  The invention described in the above-mentioned patent document is a belt base material alignment adjusting mechanism in a reversing device. The belt base material printed by the first printing machine is reversed and conveyed to the second printing machine. In doing so, an object is to carry out accurate alignment and carry the belt-like substrate into the belt-like substrate carry-in port of the second printing press.

  However, process color (Y, M, C, K) is printed on one side of the belt-like substrate with the first printer, and spot colors (purple, gold, white, etc.) are printed on the second printer. The reversing device may not be used even when printing using two printers, such as overprinting that prints the special color of the printing), and the reversing device is used for maintenance of the printing press or the reversing device itself. If it is not necessary, the reversing device must be moved from the belt-shaped substrate conveyance path. Therefore, the reversing device needs to be equipped with a mechanism for easily moving the reversing device. If it is provided, there has been a problem in that accurate positioning with respect to the belt-shaped substrate carry-in port of the second printing press becomes invalid.

Accordingly, an object of the present invention is to provide a printing apparatus including a reversing device that can be easily moved and does not impair accurate alignment with a belt-shaped substrate carry-in port of a second printing press. .
Another object of the present invention is to provide a reversing device that can be easily moved and that does not impair accurate alignment of the second printing press with respect to the belt-shaped substrate carry-in port.

  In order to solve such a problem, the invention according to claim 1 is a printing apparatus that continuously prints on a strip-shaped substrate, and includes a first printing unit, a second printing unit, and the first printing unit. A belt-like substrate reversing part that is located between the printing part and the second printing part and changes the arrangement position according to the operation of the first printing part and the second printing part, and The substrate reversing unit includes an arrangement positioning means for performing an arrangement for conveying the belt-like substrate.

  The invention according to claim 2 is the printing apparatus according to claim 1, wherein the belt-like substrate reversing portion moves along a track provided in the first printing portion and the second printing portion. It is characterized by that.

  Furthermore, the invention according to claim 3 is the printing apparatus according to claim 1, wherein the belt-shaped substrate reversing unit has a vertical structure with respect to the transport direction of the belt-shaped substrate, and the position change in the vertical direction is changed. It is possible.

  In addition, the invention according to claim 4 is the printing apparatus according to claim 1, wherein the first surface and the second surface of the belt-shaped substrate are printed by the first printing unit and the second printing unit. In the case of performing the above, the belt-like substrate reversing portion is arranged at a position where the belt-like substrate is reversed.

  The invention according to claim 5 is the printing apparatus according to claim 1, wherein the first printing unit and the second printing unit perform printing on only the first surface of the belt-shaped substrate. In this case, the belt-like substrate reversing portion is arranged at a position where it does not interfere with the belt-like substrate.

  Furthermore, the invention according to claim 6 is the printing apparatus according to claim 1, wherein when the operations of the first printing unit and the second printing unit are stopped, the belt-like substrate reversing unit is It is characterized by being arranged at a standby position.

  The invention according to claim 7 is a reversing device that includes a first printing unit and a second printing unit, and inverts the belt-like substrate in a printing device that continuously prints on the belt-like substrate, It has an arrangement positioning means for determining an arrangement position between the first printing unit and the second printing unit in accordance with the operation of the first printing unit and the second printing unit.

  The printing apparatus according to claim 1, wherein the arrangement position of the belt-like substrate reversing portion located between the first printing unit and the second printing unit that prints the belt-like substrate is the first and second printing units. The belt-like base material reversing unit is provided with an arrangement positioning means for carrying out the arrangement for conveying the belt-like base material. As a result, the belt-like substrate reversing portion can be easily moved, and accurate alignment with the belt-like substrate carry-in port of the second printer is not impaired.

  In the printing apparatus according to the second aspect, the belt-shaped substrate reversing unit moves along a track provided in the first printing unit and the second printing unit. As a result, the belt-like substrate reversing portion can be easily moved, and accurate alignment with the belt-like substrate carry-in port of the second printer is not impaired.

  In the printing apparatus according to claim 3, since the belt-like substrate reversing portion having a vertical structure can be changed in the vertical direction with respect to the conveyance direction of the belt-like substrate, the belt-like substrate reversing portion is also easily moved. And accurate alignment of the second printing press with respect to the belt-shaped substrate inlet is not impaired.

  The printing apparatus according to claim 4, wherein the first printing unit prints the first surface of the band-shaped substrate, and the second printing unit prints the second surface of the band-shaped substrate, the band-shaped substrate reversing unit. Is arranged at a position where the belt-shaped substrate is reversed.

  The printing apparatus according to claim 5, wherein when the first printing unit and the second printing unit print only the first surface with respect to the band-shaped substrate, the band-shaped substrate reversal unit does not interfere with the band-shaped substrate. It is characterized by being arranged in.

  The printing apparatus according to claim 6 is characterized in that, when the operations of the first printing unit and the second printing are stopped, the belt-like substrate reversing unit is arranged at the standby position.

  In the reversing device according to claim 7, the arrangement position between the first printing unit and the second printing unit for printing the belt-like base material can be changed according to the operation of the first and second printing units. In addition, since it has an arrangement positioning means for carrying out the arrangement for conveying the belt-shaped substrate, it can be easily moved, and accurate alignment with the belt-shaped substrate carry-in port of the second printer There is no loss.

FIG. 2 is a diagram for explaining the printing apparatus 1. FIG. 6 is a diagram for explaining a sheet reversing unit 20. 4 is a diagram for explaining an internal structure of a sheet reversing unit 20. FIG. FIG. 2 is a view of the printing apparatus 1 viewed from above.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a diagram for explaining a printing apparatus 1 according to the present invention.
The printing apparatus 1 includes a printing unit 10, a paper reversing unit 20, a paper feeding unit 30, and a paper winding unit 40.

The printing unit 10 continuously performs printing on the belt-shaped paper M that is fed from the paper feeding unit 30 and wound up by the paper winding unit 40.
As illustrated, the printing unit 10 includes a first printing unit 10a and a second printing unit 10b.

The first printing unit 10 a performs the first printing on the paper M conveyed from the paper feeding unit 30. The first printing unit 10a includes a paper insertion port 10a1, a paper discharge port 10a2, and a paper reversing unit track 10a3. The paper M delivered from the paper delivery unit 30 is conveyed from the paper insertion opening 10a1 into the first printing unit 10a, and for example, printing on the surface of the paper M or process color (YM, C, K) printing on the paper M is performed. After a certain first printing is performed, the sheet is discharged from the sheet discharge port 10a2 and conveyed to the sheet reversing unit 20.
The paper reversing unit track 10a3 is for moving a paper reversing unit 20 described later, and the paper reversing unit 20 moves along the paper reversing unit track 10a3. The paper reversing part track 10a3 includes a paper reversing part positioning part 10a31 (details will be described later).

The second printing unit 10b performs second printing on the paper M printed by the first printing unit 10a. The second printing unit 10b includes a paper insertion port 10b1, a paper discharge port 10b2, and a paper reversing unit track 10b3. The paper M on which the first printing has been performed by the printing unit 10a is conveyed from the paper insertion opening 10b1 to the inside of the second printing unit 10b. For example, printing on the back surface of the paper M or spot color (purple, gold, white) on the paper M is performed. After the second printing is performed, the paper is discharged from the paper discharge port 10b2 and conveyed to the paper winding unit 40.
The paper reversing portion track 10b3 is for moving a paper reversing portion 20 described later, and the paper reversing portion 20 moves along the paper reversing portion track 10b3. The paper reversing part track 10b3 includes a paper reversing part positioning part 10b31 (details will be described later).

  As long as the printing unit 10 is a printing method for continuously printing on the belt-like paper M, a desired printing method such as an inkjet method, an electrophotographic method, an offset method, a gravure method, a letterpress method, or a combination thereof is used. Can be adopted.

The paper reversing unit 20 is located between the printing units 10a and 10b, and reverses the front and back of the paper M in order to print the back surface of the paper M printed by the printing unit 10a with the printing unit 10b. The paper reversing unit 20 includes a paper insertion port 21, a paper discharge port 22, and a track support unit 23.
The paper reversing unit 20 has a vertical structure with respect to the conveyance direction of the paper M, and the paper M printed by the printing unit 10a is provided below the paper reversing unit 20 as illustrated. The paper is inserted into the paper reversing unit 20 from the paper insertion port 21, and the front and back are reversed inside the paper reversing unit 20. The paper is also discharged from the paper discharge port 21 provided at the lower part of the paper reversing unit 20 and is conveyed to the printing unit 10 b. The

The trajectory support unit 23 supports the paper reversing unit tracks 10a3 and 10b3 included in the printing units 10a and 10b when the paper reversing unit 20 is moved. Since the starting support portion 23 supports the paper reversing portion tracks 10a3 and 10b3, the paper reversing portion 20 moves along the paper reversing portion tracks 10a3 and 10b3, so that the position can be changed smoothly. .
Further, the track support portion 23 includes a positioning portion 231 (details will be described later).

The paper delivery unit 30 stores the paper M in a roll shape, and delivers the paper M for printing by the printing unit 10.
The paper winding unit 40 performs winding to store the paper M printed by the printing unit 10 in a roll shape.

  Here, the printing unit 10 performs printing on the paper M. However, the object to be printed by the printing unit 10 is not limited to paper, and a material that can be transported by the feeding unit 30 and the paper winding unit 40 is used. You may make it print in the printing part 10 for the cloth and synthetic resin which are strip | belt-shaped base materials.

FIG. 2 is a diagram for explaining the details of the sheet reversing unit 20.
The sheet reversing unit 20 includes a sheet insertion port 21, a sheet discharge port 22, a track support unit 23, and a moving leg 24. Since the paper insertion port 21 and the paper discharge port 22 are as described above, description thereof is omitted.

  As described above, the track support portion 23 is for supporting the paper reversing portion tracks 10a3 and 10b3 when the paper reversing portion 20 is moved along the paper reversing portion tracks 10a3 and 10b3 included in the printing portions 10a and 10b. There is a configuration that reduces friction while contacting the paper reversing portion tracks 10a3 and 10b3 such as rollers and shoes.

  Moreover, the track | orbit support part 23 has the positioning part 231 as above-mentioned. The positioning unit 231 is a member for positioning the paper reversing unit 20 corresponding to the paper reversing unit positioning units 10a31 and 10b31 of the paper reversing unit tracks 10a3 and 10b3.

  The paper reversing unit 20 is ejected from the paper discharge port 10a2 of the printing unit 10a and is placed at a predetermined position for preventing the skew of the paper M when reversing the paper M inserted into the paper insertion port 10b1 of the printing unit 10b. Need to be positioned. Therefore, the paper discharge port 10a2 of the printing unit 10a and the paper insertion port 21 of the paper reversing unit 20 and the paper discharge port 22 of the paper reversing unit 20 and the paper insertion port 10b1 of the printing unit 10b are opposed to each other. The reversing part tracks 10a3 and 10b3 have the paper reversing part positioning parts 10a31 and 10b31, and the positioning part 231 is coupled to the paper reversing part positioning parts 10a31 and 10b31, thereby reversing the paper disposed between the printing parts 10a and 10b. The position of the part 20 is determined.

Since the positioning unit 231 is coupled to the paper reversal positioning units 10a31 and 10b31, for example, by using bolts, the paper reversing unit 20 is fixed by passing the bolts through bolts provided in the paper reversal positioning units 10a31 and 10b31. Positioning is performed.
Alternatively, the paper reversing unit 20 may be positioned by using a clamper as the positioning unit 231 and coupling to a clamp groove provided in the paper reversing positioning unit 10a31, 10b31.
In addition, a structure in which the paper reversal positioning units 10a31 and 10b31 are coupled to the positioning unit 231 is provided, and a structure in which the positioning unit 231 is coupled and fixed to the paper reversal positioning units 10a31 and 10b31 is used as desired. Is possible.

  The moving leg 24 is a member that supports the installation surface when the sheet reversing unit 20 moves along the sheet reversing unit tracks 10a3 and 10b3 by being supported by the track supporting unit 23. The moving legs 24 are arranged in the necessary number to make the sheet reversing unit 20 independent from the installation surface. The moving leg 24 has a mechanism for reducing friction with respect to the installation surface, such as a roller and a shoe, so that the sheet reversing unit 20 can be easily moved between the printing units 10a and 10b.

  In addition, each movable leg 24 includes a height adjustment unit 241. The height adjustment unit 241 is for adjusting the height of the sheet reversing unit 20 from the installation surface. By adjusting the height of the paper reversing unit 20 by the height adjustment unit 241, the relative positions of the paper insertion port 21 and the paper discharge port 10a2 and the paper discharge port 22 and the paper insertion port 10b1 can be accurately taken.

  FIG. 3 is a diagram for explaining the internal structure of the sheet reversing unit 20. As shown in the drawing, turn bars 20a and 20b and rolls 20c, 20d, 20e, and 20f are provided inside the sheet reversing unit 20.

  The paper M printed by the printing unit 10a is inserted into the paper reversing unit 20 from the paper insertion port 21 (FIG. 3A), and conveyed to the turn bar 20a via the roll 20c (FIG. 3B). )). The paper M whose transport direction has been changed by 45 ° by the turn bar 20a is transported to the turn bar 20b through the roll 20d (FIG. 3C). The conveyance direction of the paper M is further changed by 45 ° by the turn bar 20b, and the front surface and the back surface of the paper M are reversed (FIG. 3 (d)). The paper M that has been turned upside down is discharged from the paper discharge port 22 through the roll 20e (FIG. 3E) and the roll 20f (FIG. 3F), and is conveyed to the printing unit 10b.

  FIG. 4 is an overhead view of the printing apparatus 1 for explaining the arrangement position of the sheet reversing unit 20 corresponding to the operation of the printing unit 10.

FIG. 4A is a diagram for explaining the arrangement position of the sheet reversing unit 20 when the printing unit 10a prints the front side of the sheet M and the printing unit 10b prints the back side of the sheet M.
In order to print on the back side of the sheet M by the printing unit 10b after the printing unit 10a performs printing on the front surface of the sheet M fed from the sheet feeding unit 30, the sheet reversing unit 20 is discharged from the printing unit 10a. The paper M needs to be reversed.
Therefore, as shown in the drawing, the paper reversing unit 20 is disposed between the printing units 10a and 10b (position A), so that the paper discharge port 10a2 of the printing unit 10a and the paper insertion port of the paper reversing unit 20 are provided. 21, the paper discharge port 22 of the paper reversing unit 20 and the paper insertion port 10b1 of the printing unit 10b face each other. If necessary, the height of the sheet reversing unit 20 is adjusted by the height adjustment unit 241 of each of the moving legs 24 of the sheet reversing unit 20, and the sheet insertion port 21 and the sheet discharge port 10a2, and the sheet discharge port 22 and the sheet insertion port. The relative position with respect to 10b1 is taken accurately.
The paper reversing unit 20 positions the printing unit 10 by positioning the paper reversing unit positioning unit 10a31 of the printing unit 10a, the paper reversing positioning unit 10b31 of the printing unit 10b, and the positioning unit 231 of the paper reversing unit 20 to the printing unit 10a. 10 enables double-sided printing on the paper M.

FIG. 4B particularly illustrates the arrangement position of the sheet reversing unit 20 when the printing unit 10a prints the surface of the sheet M in process color and the printing unit 10b performs printing on the surface of the sheet M in spot color. It is a figure for doing.
When the printing unit 10a performs printing on the surface of the sheet M sent from the sheet feeding unit 30 and then the printing unit 10b performs printing on the surface of the sheet M, the sheet reversing unit 20 is located between the printing units 10a and 10b. There is no need to be placed in.
Therefore, as shown in the drawing, the sheet reversing unit 20 is arranged so as to move from between the printing units 10a and 10b (position A) to a position (position B) that does not interfere with the conveyed sheet M.
Since the sheet reversing unit 20 moves to the position B along the sheet reversing unit tracks 10a3 and 10b3 of the printing units 10a and 10b supported by the track support unit 23, process color printing and spot color printing on the sheet M by the printing unit 10 are performed. Is possible.

FIG. 4C is a diagram for explaining an arrangement position when maintenance of the sheet reversing unit 20 is performed in a state where printing of the printing unit 10 is stopped.
In the maintenance of the paper reversing unit 20 such as internal cleaning, as shown in the drawing, the paper reversing unit 20 is located between the printing units 10a and 10b (position A) (position C where maintenance is easy). ) To move to.
Since the sheet reversing unit 20 moves to the position C along the sheet reversing unit tracks 10a3 and 10b3 of the printing units 10a and 10b supported by the track support unit 23, maintenance can be easily performed.

In this way, the paper reversing unit 20 can easily move in accordance with the operation of the printing unit 10 along the paper reversing unit tracks 10a3 and 10b3 of the printing units 10a and 10b supported by the track support unit 23.
Further, by providing the positioning unit 231, the paper reversing unit 20 is coupled with the paper reversing unit positioning unit 10 a 31 of the printing unit 10 a and the paper reversing unit positioning unit 10 b 31 of the printing unit 10 b, even when performing duplex printing. Can easily perform reliable positioning.
<Modification>
In the description so far, the paper reversing unit 20 having a structure perpendicular to the transport direction of the paper M is described as moving in a direction perpendicular to the transport direction of the paper M in accordance with the operation of the printing unit 10. However, the sheet reversing unit 20 may move in a direction perpendicular to the conveyance direction of the sheet M.
That is, the sheet reversing section tracks 10a3 and 10b3 of the printing sections 10a and 10b are installed in a direction perpendicular to the transport direction of the sheet M, whereby the sheet by the track support section 23 that supports the sheet reversing tracks 10a3 and 10b3. The moving direction of the reversing unit 20 is a direction perpendicular to the conveyance direction of the paper M.
When printing by the printing unit 10 is single-sided printing, the sheet reversing unit 20 does not hinder the conveyance of the sheet M, and therefore the sheet reversing unit 20 drops after moving in a direction perpendicular to the conveyance direction of the sheet M. Since it is necessary to prevent this, it is desirable to provide a mechanism for preventing the sheet reversing unit 20 from falling on each of the sheet reversing unit tracks 10a3 and 10b3. This fall prevention mechanism has the same structure as the paper reversing part positioning parts 10a31 and 10b31, and it is more desirable to prevent the paper reversing part 20 from falling by being coupled with the positioning part 231.

DESCRIPTION OF SYMBOLS 1 Printing apparatus 10, 10a, 10b Printing part 20 Paper reversing part 20a, 20b Turn bar 20c, 20d, 20e, 20f Roller 21 Paper insertion port 22 Paper discharge port 23 Track support part 24 Moving leg 30 Paper feeding part 40 Paper winding part 10a1, 10b1 Paper insertion port 10a2, 10b2 Paper discharge port 10a3, 10b3 Paper reversing part track 10a31, 10b31 Paper reversing part positioning part 231 Positioning part 241 Height adjustment part M Paper

Claims (7)

A printing apparatus that continuously prints on a belt-shaped substrate,
A first printing section;
A second printing section;
A belt-like substrate reversing unit that is located between the first printing unit and the second printing unit and changes the arrangement position according to the operation of the first printing unit and the second printing unit;
Have
The belt-like substrate reversing section includes an arrangement positioning means for performing the arrangement for conveying the belt-like substrate;
A printing apparatus characterized by the above. The printing apparatus according to claim 1,
The belt-like substrate reversal part moves along a track provided in the first printing part and the second printing part;
A printing apparatus characterized by the above. The printing apparatus according to claim 1,
The belt-like substrate reversing part has a vertical structure with respect to the transport direction of the belt-like substrate, and the position change in the vertical direction is possible.
A printing apparatus characterized by the above. The printing apparatus according to claim 1,
When printing the first surface and the second surface of the band-shaped substrate by the first printing unit and the second printing unit, the band-shaped substrate reversing unit is disposed at a position where the band-shaped substrate is reversed. That
A printing apparatus characterized by the above. The printing apparatus according to claim 1,
When the first printing unit and the second printing unit perform printing only on the first surface with respect to the band-shaped substrate, the band-shaped substrate reversing unit is disposed at a position where it does not interfere with the band-shaped substrate. ,
A printing apparatus characterized by the above. The printing apparatus according to claim 1,
When the operations of the first printing unit and the second printing unit are stopped, the belt-like substrate reversing unit is disposed at the standby position,
A printing apparatus characterized by the above. A reversing device that includes a first printing unit and a second printing unit, and inverts the belt-like substrate in a printing device that continuously prints on the belt-like substrate,
Having an arrangement positioning means for determining an arrangement position between the first printing unit and the second printing unit according to the operation of the first printing unit and the second printing unit;
Reversing device characterized by.

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