JP2003011318A - Flat-bed offset printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat-bed offset printing machine which can apply laminated printing efficiently on an object and improve the precision of the printing. SOLUTION: The flat-bed offset printing machine 10 is provided with a frame 11, a plate surface plate 12 arranged on the frame 11, and a printing surface plate 13. A printing material W is fixed on the printing surface plate 13. The plate surface plate 12 is fixed on the frame 11, and the printing surface plate 13 can be moved from the frame 11 to a transfer line 30 through a connection line 31. The printing surface plate 13 is transferred further on the transfer line 30 to be sent to a waiting position 30a on the transfer line 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flatbed type offset printing machine, and in particular, can improve workability,
The present invention also relates to a flatbed offset printing machine capable of printing with high accuracy.

[0002]

2. Description of the Related Art Conventionally, as a flatbed type offset printing machine, one having a frame, a plate surface plate and a printing surface plate fixed on the frame, and a blanket cylinder moving along the frame is known. There is.

In such a flatbed type offset printing machine, the blanket cylinder moves along the frame so that the ink previously filled in the plate on the plate surface plate is received by the blanket of the blanket cylinder, and the blanket cylinder The ink is then transferred to the substrate on the printing platen.

[0004]

As described above, a printing material such as a glass plate is arranged on the printing platen, and the printing material is printed with ink overlaid several times. Sometimes. In this case, the object to be printed is removed from the printing platen each time printing is performed, the ink is dried and cured, and then the object to be printed is set again on the printing platen.

However, the work of repositioning the printed material on the printing platen several times is complicated, and it is difficult to accurately arrange the printed material on the printing platen.

The present invention has been made in consideration of the above points, and it is possible to perform printing with high precision on an object to be printed on a printing platen and to improve printing efficiency. It is an object of the present invention to provide a flatbed offset printing machine capable of performing the above.

[0007]

The present invention comprises a frame,
A plate surface plate and a printing surface plate sequentially arranged in one direction on the frame, and a blanket cylinder that is movably provided on the frame and receives ink from the plate surface plate. The plate for receiving ink is fixed, and the printing material to which the ink from the blanket cylinder is transferred is fixed on the printing platen, and the frame intersects the direction of the platen plate and the printing platen. In addition to extending in the other direction, a transfer line for transferring the printing platen is provided, and the printing platen on the frame can be moved to the transfer line through a connecting line. The flatbed offset printing machine is characterized in that a standby position is provided.

According to the present invention, by moving the blanket cylinder on the frame, the ink is received by the blanket cylinder from the plate on the plate surface plate, and then the ink on the blanket cylinder is transferred to the material to be printed on the printing platen. To be done. The printing platen holding the printed material to which the ink has been transferred is then sent from the frame to the standby position of the transfer line via the connection line.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are views showing an embodiment of the present invention. As shown in FIGS. 1 to 6, the flatbed offset printing press 10 includes a frame 11, a plate surface plate 12 and a printing surface plate 13 sequentially arranged in one direction (left and right direction in FIG. 1) on the frame 11. I have it.

Of these, the plate surface plate 12 has a plate 12a to be printed on the surface thereof.
It is designed to be filled with ink. In addition, version 1
2a is adsorbed to the platen plate 12 by vacuum or is fixed by a clamp. The printing platen 13 holds a material to be printed W, and the material to be printed W is made of a metal plate or a glass plate.

Then, the printing material W is printed with ink by a blanket cylinder 14 which will be described later.

A carriage 15 is arranged on the frame 11 and moves on a rail 11a extending in one direction of the frame 11. Inside the carriage 15, a blanket cylinder 14 and a movable ink supply unit 21 are arranged. Is held.

The blanket cylinder 14 has a rubber blanket 14a wound around its outer periphery. The blanket cylinder 14 receives ink from the plate 12a on the platen 12 on the blanket 14a, and transfers the received ink to the printing material W on the printing platen 13.

The movable ink supply section 21 supplies ink to the plate 12a side on the platen plate 12.

Further, as shown in FIG. 2, the frame 11 is provided with a fixed side ink supply section 25 for supplying ink to the movable side ink supply section 21 side. The fixed-side ink supply unit 25 is fixedly installed on the frame 11.

In FIG. 2, the movable side ink supply section 21 and the fixed side ink supply section 25 form an ink supply section 21, 2.
5, the ink is supplied from the fixed-side ink supply unit 25 to the movable-side ink supply unit 21.
The ink supplied to the movable-side ink supply unit 21 is
Then, when passing through the plate surface plate 12, it is supplied to the plate 12 a provided on the plate surface plate 12.

The carriage 15 has a rail 11a of the frame 11 by means of a rack and pinion drive mechanism (not shown).
Although the carriage 15 can be moved upward, the carriage 15 may be driven on the rail 11a by using a linear motor (not shown).

By the way, as shown in FIG.
Are fixedly arranged in advance on the printing platen 13, and the printing platen 13 can move on the frame 11. On the other hand, the platen 12 is fixedly arranged on the frame 11.

As shown in FIG. 1, adjacent to the frame 11, the plate surface plate 12 and the printing surface plate 13 are arranged in the direction in which the plate surface 12 and the printing surface plate 13 are arranged. Direction) is provided. The printing platen 13 on the frame 11 can move on the connection line 31 extending in one direction and can move on the transfer line 30 extending in the other direction. The printing platen 13 is accurately driven by using a linear motor, a ball screw and the like.

Standby positions 30a and 30b are provided at both ends of the transfer line 30, and a UV curing device 32 for drying the ink printed on the material W to be printed is installed at one of the standby positions 30a. Has been done.

Further, an unloader 34 for unloading the printing platen 13 is provided adjacent to the UV curing device 32 installed at one standby position 30a, and the printing platen 13 is adjacent to the other standby position 30b. A loader 33 for loading is provided.

Next, the operation of this embodiment having such a configuration will be described.

In FIG. 1, first, the plate 12 on the plate surface plate 12 is shown.
The ink is pre-filled in a. In the frame 11, ink is supplied from the fixed-side ink supply unit 25 to the movable-side ink supply unit 21. Next, the blanket carriage 15 moves to the right in FIG. 1 on the frame 11, and the ink is ejected from the plate 12 a on the plate surface plate 12 to the blanket cylinder 14.
Is received by the blanket 14a.

After that, the carriage 15 is moved over the frame 11.
Moves to the right in FIG. 1, and the ink received by the blanket 14a of the blanket cylinder 14 is transferred to the printing material W fixed to the printing platen 13. During this time, the movable-side ink supply unit 21 fills the plate 12a on the plate 12 with ink.

After that, the blanket cylinder 14 and the movable-side ink supply unit 21 in the carriage 15 slightly float in the carriage 15, and the carriage 15 moves leftward in FIG. 1 on the frame 11 and returns to the original position. . During this time, the printing platen 13 is at the predetermined printing position 11b on the frame 11.

Ink is printed on the object to be printed W by the above-described operation.

Next, the transfer operation of the printing platen 13 for fixing and holding the material to be printed W will be described with reference to FIGS.

As described above, the ink is printed on the printing object W fixed and held by the printing platen 13. After the ink is printed once on the printing object W, the printed printing object is printed. The printing platen (first printing platen) 13 that holds W first starts from the printing position 11b on the frame 11 to the connecting line 31.
And conveyed to the transfer line 30. At this time, another printing platen (second printing platen) 13a holding the unprinted article W is waiting at the other waiting position 30b.

Next, as shown in FIG. 4, the first printing platen 13 holding the printed material W is transferred along the transfer line 30 to the UV curing device 32 at one standby position 30a. . In the UV curing device 32, the ink printed on the material W to be printed is subjected to a curing action by UV irradiation and is dried and cured. At the same time, the second printing platen 13a
It is transferred to approximately the center of the transfer line 30.

Thereafter, as shown in FIG. 5, the transfer line 30
The upper second printing platen 13a is conveyed to a predetermined printing position 11b on the frame 11 through the connection line 31. Next, as shown in FIG. 6, the first printing platen 13 in the UV curing device 32 is transferred to the standby position 30b along the transfer line 30.

After that, the printing material W on the second printing platen 13a is printed with the ink by the same action as described above.

By repeating such an operation, the material W to be printed on the first printing platen 13 and the second printing platen 13a
Ink is printed on the upper substrate W to be printed.

The material W to be printed on the first printing platen 13 and the second
The first printing platen 13 that holds the printed material W stacked and printed a predetermined number of times on the printing material W on the printing surface plate 13 a is held from the standby position 32. It is carried out through the unloader 34. Instead, a new printing platen holding a new material to be printed W is carried from the loader 33 to the standby position 30b.

As described above, according to the present embodiment, the first printing platen 13 and the second printing platen 13a are alternately conveyed to the printing position 11b on the frame 11 and each of the printing materials W is printed.
Since it is possible to perform laminated printing on the substrate W,
It is possible to efficiently perform layered printing on. Therefore, the efficiency of the printing work can be improved as a whole. Further, since the printing object W is always fixed on the first printing surface plate 13 or the second printing surface plate 13a, the positioning of the printing object W can be performed accurately at the printing position 11b on the frame 11. . That is, when the printed material W is removed from the printing platen 13 every time when the inks are stacked and printed, the positioning accuracy of the printed material W may be lowered, but according to the present invention, the first printing surface plate 13 is used. Alternatively, the second printing surface plate 13a may be set to the printing position 11 on the frame
Positioning of the printing object W can be accurately performed only by arranging it in b.

Further, the UV curing device 32 is attached to the transfer line 3
Since it is arranged at the standby position of 0, the ink can be dried and cured in the flatbed offset printing machine 10.

[0036]

As described above, according to the present invention, a plurality of printing platens at the standby position are alternately conveyed to a predetermined position on the frame and printing is performed on each of the printing materials, thereby printing the printing materials. The printing can be performed efficiently. Further, since the printing object is fixedly arranged on the printing platen, the printing platen can be positioned accurately by simply arranging the printing platen at a predetermined position on the frame, and the printing object can be accurately positioned. Laminate printing can be applied.

[Brief description of drawings]

FIG. 1 is a plan view showing a flatbed offset printing machine according to the present invention.

FIG. 2 is a side view showing a flatbed offset printing machine according to the present invention.

FIG. 3 is a view showing a transfer operation of a printing platen by a flatbed offset printing machine according to the present invention.

FIG. 4 is a diagram showing a transfer action of a printing platen by the flatbed offset printing machine according to the present invention.

FIG. 5 is a diagram showing a transfer operation of a printing platen by the flatbed offset printing machine according to the present invention.

FIG. 6 is a diagram showing a transfer action of a printing platen by the flatbed offset printing machine according to the present invention.

[Explanation of symbols]

10 Flatbed offset printing machine 11 frames 12th edition surface plate 13 Printing surface plate 13a Other printing surface plates 14 blanket body 14a blanket 15 carriage 21 Movable ink supply section 25 Fixed side ink supply section 30 transfer line 30a, 30b Standby position 31 connection line 32 UV curing device W Printed material

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takuya Kaneda             1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo             Dai Nippon Printing Co., Ltd. (72) Inventor Shinichi Yagi             1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo             Dai Nippon Printing Co., Ltd.

Claims (4)

[Claims] 1. A frame, a plate surface plate and a printing surface plate sequentially arranged in one direction on the frame, and a blanket cylinder movably provided on the frame for receiving ink on the plate surface plate. The plate for fixing the ink to the blanket is fixed on the platen, and the substrate to which the ink from the blanket cylinder is transferred is fixedly arranged on the platen for printing. A transfer line is provided that extends in the other direction that intersects the direction in which the printing platen is arranged and that transfers the printing platen. The printing platen on the frame can be moved to the transfer line via a connecting line. The flatbed offset printing machine is characterized in that standby positions of the printing platen are provided at both ends of the flat plate type offset printing machine. 2. The flatbed offset printing machine according to claim 1, wherein a UV curing device for curing the ink on the printing object is provided at one of the standby positions at both ends of the transfer line. 3. The flatbed offset printing machine according to claim 1, wherein the transfer line extends in the other direction orthogonal to the arrangement direction of the plate surface plate and the printing surface plate. 4. The printing platen is sent from above the frame to the transfer line, and while waiting at the standby position, another printing platen is sent from the transfer line onto the frame. Flatbed offset printing machine.