JP6139891B2 - Printing surface alignment device and printing machine - Google Patents

Description

  The present invention relates to a printing surface alignment device and a printing machine using the same for performing high-speed and high-precision printing on various printing materials.

  2. Description of the Related Art Conventionally, there has been a printing machine in which a printing medium wound in a roll shape is continuously supplied, and printing is performed using a flat plate on the supplied printing medium. In such a printing machine, the position of the printing plate to be supplied and the printing plate on the flat plate may be misaligned. Therefore, as shown in FIG. 4, the reference of the printing surface provided on the printing substrate (7) In accordance with a reference mark indicating the position (hereinafter also referred to as a target mark), the horizontal direction of the printing plate and the rotation direction on the horizontal plane can be adjusted so that the position of the plate printing plate (100) matches. Some have improved printing accuracy (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 11-48445

  In recent years, instead of the above conventional flat plate printing plate, a roll-shaped printing plate can be used to print on a continuous substrate at a higher speed, which is advantageous for reducing printing costs. It is being done.

  However, when the printing plate is made into a roll, printing is performed on the printing medium while sliding the printing plate on the printing sheet while rotating the rolling printing plate. If the direction of sliding and the supply direction of the printing medium do not match, the slide direction can be adjusted by simply adjusting the rotation direction on the left and right and horizontal surfaces of the roll-shaped printing plate. There is a problem that the print position cannot be adjusted because the direction does not match.

  The present invention has been made in view of these problems, and provides a printing surface alignment apparatus capable of performing high-speed and high-precision printing on a continuous printing medium with a roll-shaped printing plate, and a printing machine using the same. The purpose is to do.

  In this column, in order to facilitate understanding of the invention, the reference numerals used in the “Mode for Carrying Out the Invention” column are attached as necessary, which means that the scope of claims is limited by this reference numeral. is not.

The invention made in order to solve the problem described in “Problems to be solved by the invention” includes a roll-shaped printing plate (10), a guiding means (20) , a base portion (60), a moving portion (70), and It is a printing surface alignment apparatus (5) provided with the change means (30).

  A roll-shaped printing plate (10) is formed around a rotation axis on a printing medium (7) continuously supplied from a supply device (40) that supplies a continuous printing medium (7) in a fixed direction. It is for printing by rotating.

Guide means (20) is adapted to induce a feed device (40) the printing material consecutive supplied by (7) roll seal plate in a direction opposite to the direction of feed (10), the base ( 6) is for installation on the installation surface, the moving part (70) is for placing the stamp (10) and the guiding means (20), and the changing means (30) is the base ( 60), placing the moving part (70), the rotation center axis of the roll-shaped printing plate (10) and the direction of guidance of the roll-shaped printing plate (10) by the guiding means (20) The direction on the horizontal plane of the roll-shaped printing plate (10) and the guiding means (20) is changed while maintaining the positional relationship.

  According to such a printing surface alignment device (5), the printing surface alignment device (5) capable of performing high-speed and high-precision printing on a continuous printing body (7) with a roll-shaped printing plate (10). 5). The reason will be described below.

  The continuous printing medium (7) is supplied from the supply device (40) in a fixed direction, and the roll-shaped printing plate (10) is opposite to the supply direction of the printing medium (7) by the guiding means (20). Printing is performed on the substrate (7) by rotating while being guided in the direction. Therefore, printing can be performed at high speed as compared with printing using a conventional flat plate printing plate.

  However, if the direction in which the printing medium (7) is supplied and the guide direction of the roll-shaped printing plate (10) do not match, printing is performed obliquely with respect to the printing medium (7). Therefore, it is impossible to print with high accuracy.

  Here, as in the case of a printing machine using a conventional flat plate printing plate, the roll-shaped printing plate (10) is guided while rotating even if the direction on the horizontal plane of only the roll-shaped printing plate (10) is changed. Therefore, the problem that printing is performed obliquely on the substrate (7) and high-precision printing cannot be performed cannot be solved.

Therefore, the changing means (30) placed on the base (60) and placing the moving part (70) is used to change the rotation center axis of the roll-shaped printing plate (10) and the roll-shaped printing plate by the guiding means (20). While maintaining the positional relationship with the guiding direction of (10), if the direction of the roll-shaped printing plate (10) and the guiding means (20) on the horizontal plane is changed, the rolled printing plate that moves while rotating. Since the movement direction (guidance direction) of (10) and the supply direction of the printing medium (7) coincide with each other, printing is not performed obliquely, and high-precision printing is possible.

  The printed material (7) includes an intermediate transfer material such as a blanket used for offset printing in addition to a medium that is printed directly from an intaglio, such as paper or film. Furthermore, in addition to paper, it is meant to include an insulating film when an electronic circuit is formed by printing on an insulating film.

By the way, various methods are conceivable to maintain the positional relationship between the rotation center axis of the roll-shaped printing plate (10) and the guiding direction of the roll-shaped printing plate (10). but as described in claim 2, change means (30), linear movement of the same X-axis direction and the feed direction of the printing material (7), a straight line in the Y-axis direction perpendicular to the X axis A plurality of moving modules (32) that move and rotate around the Z-axis orthogonal to both the X-axis and the Y-axis are placed on the base (60), and the moving parts are placed on the plurality of moving modules (32). (70) is mounted, and the moving unit (70) is moved in the X-axis direction or the Y-axis direction or rotated around the Z-axis by combining the operations of the plurality of moving modules (32). The roll-shaped printing plate (10) and the guiding means (20 The direction of the horizontal surface of the good to be changed.

  In this way, in a state where the roll-shaped printing plate (10) and the guiding means (20) are placed on the moving unit (70), only the moving unit (70) is moved in the X-axis direction, Y Only by moving in the axial direction and rotating around the Z axis, the roll-shaped printing plate (10) and the guiding means (20) are maintained while maintaining the positional relationship between the roll-shaped printing plate (10) and the guiding means (20). ) Can be changed, so that the printing surface alignment device (5) can have a simple structure.

  According to a third aspect of the present invention, the printed material (7) has a reference mark indicating the reference of the printing surface position, is installed in the changing means (30), and includes a roll-shaped mark including the reference mark. Based on the position of the reference mark of the image on the printing surface acquired by the image acquisition means (80) and the image acquisition means (80) acquired from the upper side of the printing surface, the printing surface image by the plate (10) Control means (90) for controlling the changing means (30) may be provided so that the supply direction of (7) and the printing direction by the roll-shaped printing plate (10) coincide.

In this way, the print surface can be aligned with a simple configuration in which the image acquisition means (80) acquires the image of the print surface.
The invention described in claim 4 continuously comprises the printing surface alignment device (5) according to any one of claims 1 to 4 and the printing medium (7) wound in a roll shape. And a winding device (50) for winding up the printing body (7) printed by the roll-shaped printing plate (10) of the printing surface alignment device (5) in a roll shape. And a printing machine (1).

  Such a printing machine (1) can obtain the same effect as that of any one of the first to fourth aspects, and the supply device (40) and the winding device (50) are provided. Since the printing medium (7) is stored in a roll shape, a large amount of the printing medium (7) can be held with a small capacity. Therefore, it can be set as the printing machine (1) suitable for mass printing at high speed.

1 is an external view showing a schematic configuration of a printing machine. It is explanatory drawing of the positioning method of the printing surface by a roll-shaped printing plate. It is explanatory drawing of the positioning method of the printing surface by a roll-shaped printing plate. It is explanatory drawing of the method of position alignment of the printing surface by the conventional flat plate printing plate.

Embodiments to which the present invention is applied will be described below with reference to the drawings. The embodiment of the present invention is not limited to the following embodiment, and can take various forms as long as they belong to the technical scope of the present invention.
(Configuration of printing machine 1)
1A and 1B are external views showing a schematic configuration of the printing press 1, in which FIG. 1A is a front view, FIG. 1B is a plan view, and FIG. 1C is a right side view. As shown in FIG. 1, the printing press 1 includes a supply device 40, a winding device 50, and a printing surface alignment device 5.

  The supply device 40 is a device that continuously supplies the printed material 7 that is wound in a roll shape, and includes a roller 42 in which a metal material such as stainless steel is formed in a cylindrical shape, and a printed material 7 that is fed from the roller 42. Auxiliary rollers 44, 45, and 46 for introduction into the printing surface alignment device 5 and a supply motor 48 for rotating the roller 42 are provided.

  Then, the printing medium 7 is held in a state of being wound around the roller, and during printing, the roller 42 is rotationally driven by the supply motor 48 via the gear by a control signal from the control unit 90 described later, thereby assisting. Via the rollers 44, 45 and 46, the printing medium 7 wound in a roll is continuously supplied.

  The winding device 50 is a device that winds up the printed material 7 printed by the roll-shaped printing plate 10 of the printing surface alignment device 5 in a roll shape, and is a roller in which a metal material such as stainless steel is formed in a cylindrical shape. 52 and a winding motor 54 that rotationally drives the roller 52.

  Then, in response to a control signal from the control unit 90 described later, the roller 52 is rotated by the winding motor 54 to hold the printed material 7 on which printing has been completed while being wound around the roller.

The printing surface alignment apparatus 5 includes a roll-shaped printing plate 10, a guide unit 20, a changing unit 30, a base unit 60, a moving unit 70, a camera 80, and a control unit 90.
The roll-shaped printing plate 10 performs printing by rotating the printing medium 7 that is continuously supplied from the supply device 40 that supplies the continuous printing medium 7 in a fixed direction around the rotation axis. It is a device.

  Specifically, a roller 12 made of metal such as iron or aluminum is formed in a hollow portion of an intaglio plate formed by laminating aluminum, iron, or hard resin into a sleeve shape and forming a concave groove by laser processing or the like on the surface thereof. Inserted into a roll.

  The guide unit 20 is a device that guides the roll-shaped printing plate 10 in a direction opposite to the supply direction of the continuous printing medium 7 supplied by the supply device 40, and includes a slide unit 22 and a guide rail 24. ing.

  The slide portion 22 includes a housing 25 that supports both ends of the roller 12 of the roll-shaped printing plate 10, a roller motor 26 that rotationally drives the roller 12, and the entire slide portion 22 in the horizontal direction in FIG. A slide motor 27 for sliding driving and an actuator 28 for raising / lowering the roller 12 are provided.

  At the time of printing, the roll-shaped printing plate 10 is lowered to the printing surface by the actuator 28, the roll-shaped printing plate 10 is rotated by the roller motor 26, and the winding device 50 is moved on the guide rail 24 by the slide motor 27. Printing is performed while moving from the side to the supply device 40 side (left side to right side in FIG. 1A).

  When printing is completed, the roll-shaped printing plate 10 is lifted by the actuator 28, and then the guide motor 24 is moved from the supply device 40 side to the winding device 50 side by the slide motor 27 (from the right side in FIG. 1A). Move to the left).

By repeating such an operation while supplying the printing medium 7 from the supply device 40, printing is continuously performed on the printing medium 7 continuously supplied by the roll-shaped printing plate 10.
The changing unit 30 maintains the positional relationship between the rotation center axis of the roll-shaped printing plate 10 and the guide direction of the roll-shaped printing plate 10 by the guide unit 20 while maintaining the positional relationship between the roll-shaped printing plate 10 and the guide unit 20. It is a device that changes the direction on the horizontal plane.

  The changing unit 30 includes a plurality of moving modules 32. One moving module 32 includes a linear movement in the X-axis direction that is the same as the supply direction of the printing medium 7, a linear movement in the Y-axis direction orthogonal to the X-axis, and a Z-axis that is orthogonal to both the X-axis and the Y-axis. This is a so-called XYθ type alignment module that rotates around the axis.

Each moving module 32 is mounted and fixed on the base 60, and a moving unit 70 is mounted and fixed on each moving module 32.
Then, by combining the operations of the plurality of moving modules 32, the moving unit 70 is moved around the X-axis direction, the Y-axis direction, and the Z-axis so that the roll-shaped printing plate 10 and the guide unit 20 are on the horizontal plane. Is supposed to change.

  The base 60 is a so-called surface plate made of metal such as iron for installing the printing press 1 on an installation surface such as a factory, and a height at which the height for installing the printing press 1 horizontally can be adjusted on the bottom surface. A thickness adjusting unit 62 is provided.

  The moving unit 70 is a flat plate made of metal such as iron for mounting the roll-shaped stamp 10 and the guide unit 20. The moving unit 70 is mounted and fixed on the plurality of moving modules 32 of the changing unit 30. Yes.

  The camera 80 is a camera using a CCD or an image pickup tube, and an image of the printing surface by the printing plate 10 including the reference mark (target mark) is displayed from the upper side of the printing surface at the tip of the column 64 attached to the slide unit 22. It is attached so that it can be acquired. Further, the image signal of the camera 80 is output to the control unit 90.

The control unit 90 is a device including a liquid crystal display 92 that also serves as a CPU, ROM, RAM, I / O, and an operation panel (not shown), and is based on the position of the reference mark of the image on the printing surface acquired by the camera 80. The changing unit 30 is controlled so that the supply direction of the printing medium 7 and the printing direction of the roll-shaped printing plate 10 coincide.
(Operation of printing machine 1)
Next, the operation of the printing press 1 will be described with reference to FIGS. A reference mark (target mark) indicating the reference of the printing surface position is printed on the substrate 7 as indicated by “A” in FIGS. 2 and 3, and a solid line facing left is shown in FIG. As indicated by the arrows, the printing medium 7 is continuously supplied from the supply device 40 to the printing surface alignment device 5.

In the printing surface alignment device 5, the changing unit 30 is controlled so that the supply direction of the printing medium 7 and the printing direction (longitudinal direction of the guide rail 24) by the roll-shaped printing plate 10 coincide.
That is, the camera 80 acquires an image of the printing medium 7 and inputs the acquired image to the control unit 90 as image data.

  The control unit 90 extracts the target mark by image processing, and calculates the amount of deviation between the supply direction of the printing medium 7 and the printing direction by the roll-shaped printing plate 10 by image processing from the extracted target mark position. Then, a control signal is output to the plurality of movement modules 32 to move the moving unit 70 in the horizontal direction so that the calculated amount of deviation is zero.

  For example, in a state where a deviation occurs between the printing medium 7 indicated by a solid arrow pointing left in FIG. 2B and the guide direction of the roll-shaped printing plate 10 indicated by a broken arrow pointing right, the printing medium 7 is printed. In this case, printing is performed in a state of being shifted from the roll-shaped printing plate 10.

  Here, as shown in FIG. 3 (a), similarly to the conventional flat plate printing plate (see FIG. 4), if only the direction of the roll-shaped printing plate 10 is the same as the supply direction of the printing medium 7, Since the roll-shaped printing plate 10 is guided by being shifted in the vertical direction with respect to the printing medium 7, it is possible to perform only shifted printing.

  Therefore, as shown in FIG. 3B, the guide rail 24 that determines the guide direction of the roll-shaped printing plate 10 and the positional relationship between the guide directions of the roll-shaped printing plate 10 are maintained, that is, the guide rail 24. And the direction of the roll-shaped printing plate 10 are changed together so that the guide direction coincides with the supply direction of the printing medium 7.

  In this way, after the direction of the guide rail 24 and the roll-shaped printing plate 10 is made to coincide with the supply direction of the printing medium 7, the roll-shaped printing plate 10 is driven to rotate along the guide rail 24. Printing is performed on the substrate 7 while sliding.

The printed material 7 includes an intermediate transfer material such as a blanket used for offset printing in addition to a medium that is printed directly from an intaglio, such as paper or film. Further, in addition to paper, an insulating film in the case where an electronic circuit is formed by printing on an insulating film is also included.
(Features of printing machine 1)
In the printing press 1 as described above, the changing unit 30 maintains the positional relationship between the rotation center axis of the roll-shaped printing plate 10 and the guide direction of the roll-shaped printing plate 10 by the guide unit 20 while maintaining the roll shape. The direction of the stamp plate 10 and the guide portion 20 on the horizontal plane can be changed.

  Accordingly, since the moving direction of the roll-shaped printing plate 10 that moves while rotating (the guide direction by the guide rail) and the supply direction of the printing medium 7 coincide with each other, printing is not performed obliquely, and high-precision printing is performed. Is possible.

  Since the so-called XYθ alignment module is used to change the position of the moving unit 70, the roll-shaped printing plate 10 and the guide unit 20 are placed on the moving unit 70 in the X-axis direction. Since the positions of the roll-shaped printing plate 10 and the guide unit 20 can be changed simply by moving, moving in the Y-axis direction, and rotating around the Z-axis, the printing surface alignment device 5 has a simple structure. be able to.

  Further, an image of the printing surface including the target mark is acquired by the camera 80 from the upper side of the printing surface, and based on the position of the target mark of the acquired image of the printing surface, the supply direction of the printing medium 7 and the roll-shaped printing plate 10 are obtained. Since the changing unit 30 is controlled so that the printing direction matches the printing direction, it is possible to align the printing surface with a simple configuration in which an image of the printing surface is acquired by the camera 80 and image processing is performed.

Since the printing medium 7 is stored in a roll shape by the supply device 40 and the winding device 50, a large amount of the printing medium 7 can be held with a small capacity. Therefore, the printing press 1 suitable for high-speed printing can be obtained.
[Other Embodiments]
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, A various aspect can be taken.

  In the above embodiment, the moving unit 70 is aligned by performing image processing on the image acquired by the camera 80. However, the position of the printing medium 7 supplied from the supply device 40 is determined by a position sensor such as an optical sensor. And detecting the deviation of the detected printing medium 7 from the guide rail 24 to perform alignment.

  DESCRIPTION OF SYMBOLS 1 ... Printing machine 5 ... Printing surface alignment apparatus 7 ... To-be-printed body 10 ... Roll-shaped printing plate 12 ... Roller 20 ... Guide part 22 ... Slide part 24 ... Guide rail 25 ... Case 26 ... Roller motor 27 ... Slide Motor 28 ... Actuator 30 ... Change section 32 ... Movement module 40 ... Supply device 42 ... Roller 44, 45, 46 ... Auxiliary roller 48 ... Supply motor 50 ... Winding device 52 ... Roller 54 ... Winding motor 60 ... Base 62 ... Adjustment unit 64 ... Post 70 ... Moving unit 80 ... Camera 90 ... Control unit 92 ... Liquid crystal display.

Claims (4)

A roll-shaped printing plate for performing printing by rotating around a rotation axis to a printing medium continuously supplied from a supply device that supplies a continuous printing medium in a fixed direction;
Guidance means for guiding the roll-shaped printing plate in a direction opposite to the direction of supply of the continuous printing medium supplied by the supply device;
A base for installation on the installation surface;
A moving part for placing the stamp and the guiding means;
The printing plate is installed on the base, the moving unit is placed, and the positional relationship between the rotation center axis of the printing plate and the direction of guidance of the roll-shaped printing plate by the guiding means is maintained. Changing means for changing the direction of the guiding means on a horizontal plane;
A printing surface alignment apparatus comprising: Te printing surface aligner smell of claim 1,
Before Symbol changing means,
Linear movement in the same X-axis direction as the supply direction of the printing medium, linear movement in the Y-axis direction orthogonal to the X-axis, rotation around the Z-axis orthogonal to both the X-axis and the Y-axis It is configured to place a plurality of moving modules that move on the base, and to place the moving parts on the plurality of moving modules,
By combining the operations of the plurality of moving modules, the moving unit is moved around the X-axis direction, the Y-axis direction, and the Z-axis, thereby changing the direction on the horizontal plane of the printing plate and the guiding means. The printing surface alignment apparatus characterized by performing. The printing surface alignment apparatus according to claim 2,
The substrate to be printed has a reference mark indicating a reference of a printing surface position;
An image acquisition unit that is installed in the changing unit and includes the reference mark, and acquires an image of the printing surface by the roll-shaped printing plate from the upper side of the printing surface;
Control means for controlling the changing means based on the position of the reference mark of the image on the printing surface acquired by the image acquisition means so that the supply direction of the printing medium and the printing direction by the printing plate coincide with each other; ,
A printing surface alignment apparatus comprising: The printing surface alignment apparatus according to any one of claims 1 to 4,
A supply device for continuously supplying a substrate to be printed in a roll shape;
A winding device that winds up the printed material that has been printed with the roll-shaped printing plate of the printing surface alignment device;
A printing machine comprising:

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