JP3369222B2 - Gravure printing device and gravure coating device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravure printing apparatus and a gravure coating apparatus, and more particularly to a gravure printing apparatus and a gravure coating apparatus which can take a large working space.

[0002]

2. Description of the Related Art A conventional gravure printing apparatus includes a plate cylinder that turns printing on a web and an impression cylinder that presses the web against the plate cylinder. Further, a furnisher roll is provided in contact with the plate cylinder, and ink is supplied to the plate cylinder through the furnisher roll.

The furnisher roll is generally rotatably supported by frames at both ends thereof.

[0004]

As described above, the furnisher roll is provided in contact with the plate cylinder, and the furnisher roll is rotatably supported by the frame.

An ink circulation pump is provided below the plate cylinder.
Inking-type devices such as an ink pan are arranged to supply ink to recesses called cells of the plate cylinder. The furnisher roller performs a process of further filling the ink supplied to the plate cylinder into the cells of the plate cylinder so as to eliminate the ink-free gap.

[0006] In such a situation, the gravure printing machine is replaced with a plate cylinder having a different radius, pattern, etc. for each item, and the ink component,
It is necessary to clean the ink circulation pumps, ink pans, and other inking-type devices in order to replace them with different colors. Alternatively, it is necessary to replace each inking system device with another cleaned device. However, due to the above reasons, the working space is narrowed by the above-mentioned finisher roll at the time of work such as replacement and cleaning.

Further, when the exchanging device including the exchanging arm for exchanging the cart for exchanging the plate cylinder and the like is provided, the working space is further narrowed.

The present invention has been made in view of the above points, and provides a gravure printing apparatus and a gravure coating apparatus that can easily perform maintenance work of each of the plate cylinder and inking type apparatuses. The purpose is to do.

[0009]

SUMMARY OF THE INVENTION The present invention comprises a plate cylinder, an impression cylinder for pressing a web against the plate cylinder, and a furnisher roll abutting against the plate cylinder. The furnisher roll has an upper end portion. A sub-arm that is supported by the lower ends of a pair of arms that rotate about the center and that is adjacent to one of the pair of arms that supports the furniture roll and that rotates about the same rotation axis as the one arm. Is provided,
This sub-arm rotates in synchronization with the other arm, and the one arm and the sub-arm are connected via an operating screw, and by rotating the operating screw, one arm moves in a rotational direction relative to the sub-arm. A gravure printing apparatus having a position that can be changed, a coating cylinder, an impression cylinder that presses a web against the coating cylinder, and a furnisher roll that contacts the coating cylinder. The furnisher roll is supported by the lower ends of a pair of arms that rotate about the upper end, and is adjacent to one of the pair of arms that supports the furnisher roll and is the same as the one arm. Is provided with a sub-arm that rotates about the rotation axis of the sub-arm, the sub-arm rotates in synchronization with the other arm, and the one arm and the sub-arm are connected via an operating screw. By rotating the actuating screw, one arm is gravure coating apparatus characterized by a freely change the relative position in the rotational direction relative to the sub-arm.

[0010]

According to the present invention, since the furniture roll is supported by the lower ends of the pair of arms, the lower part of the furniture roll can be used as a working space for exchange cleaning.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an embodiment of the present invention. Among these, FIG. 1 is a front view of the gravure printing apparatus, FIG. 2 is a view taken along the line II in FIG. 1, and FIG.
It is a III line direction arrow figure of.

2 and 3, the gravure printing apparatus includes a plate cylinder 11 for printing on the web 20 and an impression cylinder 12 for pressing the web 20 against the plate cylinder 11. Further, a furnisher roll 13 for supplying ink to the plate cylinder 11 is provided so as to be able to come into contact with the plate cylinder 11. 2 and 3, the plate cylinder 11 is replaceable with a plate cylinder 11a having a larger radius.

The furnisher roll 13 may be arranged in an ink pan (not shown), or ink may be jetted onto the furnisher roll 13 from an ink jetting device (not shown). Also, the plate cylinder 11 and the furnisher roll 13
Ink may be supplied from above between the plate cylinder 11 and the printer cylinder 11 and the ink may be stored between the plate cylinder 11 and the finisher roll 13.

As shown in FIG. 1, the finisher roll 13 is held by support shafts 13a and 13b, and the support shafts 13a and 13b are paired with a pair of arms 14a and 14a.
It is rotatably supported by the lower end of 14b. One of the pair of arms 14a and 14b, for example, the upper end portion of the arm 14a has a rotary shaft 3 having an arm gear 17a.
8 is rotatably supported, and the upper end of the other arm 14b is fixed to a hollow shaft 39 having an arm gear 17b. Further, the sub-arm 15 adjacent to the one arm 14a is fixed to the rotating shaft 38, and the arm 14a and the sub-arm 15 respectively have the arm pin 27 and the sub-arm pin 2.
Have eight.

Arm pin 27 and sub arm pin 28
Are connected to each other by an operating screw 16. That is, the operation portion 1 of the operation screw 16 is provided on the sub arm pin 28 side.
6a has a threaded portion 16 of the operating screw 16 on the arm pin 27 side.
By b engaging with each other and rotating the operation portion 16a, the relative position between the arm pin 27 and the sub arm pin 28 can be changed.

By rotating the rotary shaft 38 and the hollow shaft 39 synchronously as described later, the sub arm 15 fixed to the rotary shaft 38 and the other arm 14b fixed to the hollow shaft 39 are synchronized. Rotate. In this case, by changing the relative position between the arm pin 27 and the sub-arm pin 28, the relative position between the one arm 14a and the sub-arm 15 is changed, whereby the one arm 14a is changed.
The relative position of the other arm 14b can be changed (adjusted).

The arm gear 17a of the rotary shaft 38 and the arm gear 17b of the hollow shaft are engaged with drive gears 18a and 18b fixed to both ends of the drive shaft 31, respectively. The drive shaft 31 is rotationally driven by the drive arm 21 which is rotated by the air cylinder 22.

Further, as shown in FIG. 1, one support shaft 13b of the furnisher roll 13 has a sprocket 33, and this sprocket 33 is a sprocket 40 of a sub drive shaft 32 disposed in a hollow shaft 39. By chain 2
4 is driven. Further, a drive speed reducer 37 is connected to a portion of the sub drive shaft 32 opposite to the sprocket 40.

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

First, the web 20 is pressed between the plate cylinder 11 and the impression cylinder 12 to print on the web 20. In this case, the drive reducer 37 drives the sub drive shaft 32, and the rotation of the sub drive shaft 32 is sequentially transmitted to the sprocket 40, the chain 24, the sprocket 33, and the support shaft 13b. In this way, the furnisher roll 1
3 rotates and ink is supplied from the furnisher roll 13 to the plate cylinder 11 side.

Next, when replacing the plate cylinder 11 with a plate cylinder 11a having a large diameter, the drive arm 2 is moved by the air cylinder 22.
The drive shaft 31 is rotated via 1. The rotation of the drive shaft 31 is transmitted to the rotary shaft 38 and the hollow shaft 39 through the drive gears 18a and 18b and the arm gears 17a and 17b of the drive shaft 31 in order, and the rotary shaft 38 and the hollow shaft 39 rotate in synchronization. To do. Next, the rotation of the rotating shaft 38 is performed by the sub arm 1
The rotation of the hollow shaft 39 is transmitted to the other arm 14b through the armature 5 and the operating screw 16. In this way, the pair of arms 14a and 14b swing in the direction of arrow L in FIG.
Leaves the plate cylinder 11.

Next, the plate cylinder 11 is replaced with a plate cylinder 11a having a large diameter, and the pair of arms 14a and 14b are swung in the opposite direction to the above, so that the finisher roll 13 is brought into contact with the plate cylinder 11a having a large diameter. . In this case, the relative position between the arm 14a and the sub-arm 15 is changed by rotating the operation screw 16, so that the arm 14a and the sub-arm 15 are changed.
Change the relative position of b. In this way, the axis of the furnisher roll 13 can be moved to align the furnisher roll 13 with the plate cylinder 11a. Further, since the furnisher roll 13 is supported by the lower ends of the pair of arms 14a and 14b,
Compared with the case where the furniture roll 13 is supported from below by a frame, the lower side of the furniture roll 13 can be widely used as a work space.

In the above embodiment, an example using the printing plate cylinders 11 and 11a is shown.
Alternatively, a coating cylinder for coating the web 20 may be used.

Although an example in which the furniture roll 13 is rotationally driven by the drive speed reducer 37 has been shown, the furnisher roll 13 is separated from the drive speed reducer 13 to be in a rotation-free state, and the furnisher roll 13 is moved to the plate cylinder. You may make it rotate with 11.

[0025]

As described above, according to the present invention,
Since the furniture roll can be supported by the lower ends of the pair of arms, the lower portion of the furniture roll can be used as a working space. Therefore, it is possible to easily perform maintenance work for the plate cylinder and the inking system device.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a gravure printing apparatus according to the present invention.

FIG. 2 is a view taken along the line II in FIG.

FIG. 3 is a view taken along the line III in FIG.

[Explanation of symbols]

11 plate cylinder 12 impression cylinder 13 Furnisher rolls 14a, 14b arms 15 sub arm 16 Operation screw 20 Web

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Claims (2)

(57) [Claims] 1. A plate cylinder, an impression cylinder that presses a web against the plate cylinder, and a furnisher roll that abuts on the plate cylinder. The pair of furnisher rolls rotate about an upper end thereof. Of the pair of arms that supports the furniture roll, which is supported by the lower end of the arm,
Adjacent to one arm is provided a sub-arm that rotates about the same rotation axis as the one arm, and this sub-arm rotates in synchronization with the other arm, and the one arm and the sub-arm have an operating screw. A gravure printing apparatus, characterized in that one arm can change a relative position in a rotation direction with respect to a sub arm by rotating the operation screw. 2. A coating cylinder, an impression cylinder that presses a web against the coating cylinder, and a finisher roll that abuts the coating cylinder. The finisher roll has an upper end portion as a center. Of the pair of arms supporting the finisher roll, which are supported by the lower ends of the pair of arms that pivot to
Adjacent to one arm is provided a sub-arm that rotates about the same rotation axis as the one arm, and this sub-arm rotates in synchronization with the other arm, and the one arm and the sub-arm have an operating screw. The gravure coating apparatus is characterized in that the one arm is rotatable relative to the sub arm by rotating the operating screw, and the relative position of the one arm in the rotation direction is changeable.