JPH072199Y2 - Multicolor offset proof machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a multicolor offset proof machine.

When performing proof printing with a multicolor offset proof machine, it is necessary to correctly place the paper at a fixed position on the paper surface plate. If the position of the paper is not correct, the color-misaligned printed matter will be printed out and the printing will have to be restarted from the beginning.

Conventional technology and its problems For the reasons described above, in the past, in a multicolor offset proofing machine, a front surface of the paper was provided on the paper surface plate, and a front edge of the paper was provided on the front surface. Is positioned by applying one side edge of the paper to the horizontal beam. Conventionally, the paper drawer is manually performed, and there is a problem that it requires skill to accurately apply the paper to the front and sideways.

An object of the present invention is to provide a multi-color offset proof machine that can effectively perform paper cutting with mechanical force.

Still another object of the present invention is to provide a multi-color offset proof machine that can effectively perform automatic paper ejection by mechanical force.

Means for Solving the Problems The above object of the present invention is achieved by a multicolor offset calibrator having the following configuration.

A mold that releasably holds the proof sheet by a suction cup and is reciprocated by a motor between a position corresponding to the suction cup facing the sheet base and a position corresponding to the top surface of the paper surface plate. It is a type that holds the printed paper releasably by a paper feed carriage and a suction cup, and a motor is provided between a portion corresponding to the suction cup facing a fixed position on the upper surface of the paper platen and a portion corresponding to facing the discharge tray. A brush which is rotated in a predetermined direction so as to push the paper on the paper surface plate toward the front edge of the paper front end positioning front beam of the paper surface plate is provided in the paper feed carriage. Mount it on the paper surface plate, and releasably clamp the side edge of the paper on the paper surface plate near the side of the paper surface plate. Equipped with a laterally movable clamp to hit the burr, and a paper surface plate Multicolor offset proof press arranged at a height corresponding to the upper surface of the paper plate, a lowerable air nozzle proximate the the tail edge side of the paper.

Embodiments Next, embodiments of the present invention will be described with reference to the accompanying drawings.

The illustrated multicolor offset proof machine of the present invention is of a lithographic type.

In the figure, the paper feed carriage is indicated by reference numeral (1), and the paper discharge carriage is indicated by reference numeral (2). The paper feed carriage (1) and the paper discharge carriage (2) are provided at fixed positions of the calibrator.

The paper feed carriage (1) has a suction cup (3) for releasably adsorbing and holding a proof sheet. The suction cup (3) is attached to the bracket (22). The paper feed carriage (1) has a motor, more preferably a step, between a portion corresponding to the suction cup (3) facing the paper table (4) and a portion corresponding to the upper surface of the paper surface plate (5). A type that is reciprocally moved by a motor (6) of a momentum control type such as a motor is used. The paper feed carriage (1) is reciprocated by a motor (6) under the guidance of a guide rail (7). The guide rail (7) extends in a predetermined direction over a range corresponding to reciprocating the paper feed carriage (1) within a required range. (In Fig. 1, the guide rail (7)
In order to make it easy to distinguish from other related members, the end portion is omitted on the side of the table (4). ) The motor (6) passes through the transmission chain sprocket (8),
Activate the drive chain (9) for the paper feed carriage (1). The chain (9) is connected to the paper feed carriage (1).

The paper discharge carriage (2) has a suction cup (10) for releasably adsorbing and holding the printed paper. The paper discharge carriage (2) is provided between a position corresponding to the suction cup (10) facing the fixed position on the upper surface of the paper platen (5) and a position corresponding to the discharge platen (11) facing the fixed position. A motor, more preferably a type that can be reciprocated by a motor (12) of a rotation amount controllable type such as a step motor, is used. Paper ejection carriage (2)
Is guided by a guide rail (13) and reciprocated by a motor (12). The guide rail (13) extends in a predetermined direction over a range corresponding to reciprocating the discharge carriage (2) within a required range. The motor (12) may be transmitted to the paper discharge carriage (2) by the same transmission means as in the paper feed carriage (1). Therefore, the illustration of the transmission system for the discharge carriage (2) is omitted.

A rotary brush for pushing the paper on the paper surface plate (5) to the paper feed carriage (1) toward the paper front end positioning front burr (14) side known per se of the paper surface plate (5). Wear (15). Specifically, the brush (15) is mounted on a bracket (21) fixed to a rotatable shaft (16) on the carriage side plate (1a). Brush (15) is motor (19)
Is rotated counterclockwise in FIG. 4 through the transmission belt (20). The bracket (22) of the suction cup (3) is fixed to the shaft (16). The shaft (16) is rotated around the center of the shaft (16) clockwise and counterclockwise in FIG. 4 by a fluid pressure cylinder / plunger device (17) such as an air cylinder of the proximal end side. The required end of the arm (18) is connected.

The suction cup (10) of the paper discharge carriage (2) may be of the same mounting type as the suction cup (3). In the figure, the bracket (23) corresponds to the bracket (22),
(24) corresponds to the shaft (16), (25) corresponds to the fluid pressure cylinder / plunger device (17).
The plunger device (26) is an arm corresponding to the arm (18).

A nipping device (27) for releasably nipping the side end of the paper placed on the paper surface plate (5) is provided near the side of the paper surface plate (5) (lower side in FIGS. 2 and 10). . The clamper (27) has a fixed clamping piece (28) whose upper surface is at the same height as the upper surface of the paper surface plate (5), a movable clamping piece (30) which can be opened and closed by a fluid pressure cylinder / plunger device (29), and a paper clamping element. The guide (31) fixed to the board (5) has a slide block (33) fitted in a groove (32) extending in a predetermined direction. The slide block (33) is integrated with the support body (34) to which the fixed holding piece (28) is attached. The slide block (33) is prevented from rising by the presser foot (41). The slide block (33) has a rod (35) projecting integrally from it, and the rod (35) is rotated clockwise and counterclockwise in FIG. 10 by the rotary shaft (37) of the rotary drive (36). The arm (38) which is turned around is fitted in the long hole (39) at the tip of the arm (38). The nipping device (27) is operated by the rotary drive (36) so that one side end of the paper nipping it is brought into contact with a side edge positioning lateral beam (not shown) of the paper surface plate (5) known per se. Arm (38), rod (35),
Through the slide block (33) and the support (34), it is possible to move in a predetermined direction (downward in FIG. 10) by a predetermined amount. Further, in the nipping device (27), the tip end of the nipping pieces (28) (30) becomes a notch (40) at the end of the paper surface plate (5) from the predetermined standby position by the rotary drive machine (36). It is possible to move to a place corresponding to entering.

Close the paper gripping edge on the paper surface plate (5) (the edge of the paper that is pressed against the upper surface of the paper surface plate (5) with the paper gripper claws (42) described below, that is, the edge opposite the gripping side). The air nozzle (43) is arranged at a height corresponding to the upper surface of the board (5). The air nozzle (43) can be lowered from a position of the height by a fluid pressure cylinder / plunger device (44).

The automatic paper feed (paper feeder) and automatic paper discharge operations of the multicolor offset proofing machine of the present invention of the illustrated embodiment are as follows.

The blanket cylinder carriage (45) is moved from the ink kneading roller (46) side of the proofing machine to the water rod side (the carriage (45) is shown at the position where the movement is finished).
Then, the known paper gripper (4) of the paper surface plate (5)
2) goes up, that is, released.

The suction cup (3) of the paper feed carriage (1) standing by at a fixed position starts suction, and the suction cylinder is placed on the upper surface of the sheet (not shown) on the table (4) by the fluid pressure cylinder / plunger device (17). (3) is pressed to adsorb the paper. If necessary, the suction cup (3) sucking the paper is raised to a proper height by the fluid pressure cylinder / plunger device (17).

After the paper is adsorbed, the paper feed carriage (1) is equivalent to the front end (the end on the left side in FIGS. 1 and 2) of the paper adsorbed by the suction cup (3) occupy a little front of the paper gripper (42). Where to do
That is, the suction cup (3) is moved by the motor (6) to a position corresponding to the suction plate (3) facing the fixed position on the upper surface of the paper platen (5). When the paper feed carriage (1) moves to this position, the suction of the suction cup (3) is released. The freed paper is placed on the paper surface plate (5). In this case, if necessary,
Lower the suction cup (3) to an appropriate height by the fluid pressure cylinder / plunger device (17).

After the suction and release of the paper, the brush (15) is lightly pressed against the paper placed on the paper surface plate (5), and the brush (15) is rotated in a desired direction. The brush (15) pushes the paper on the paper surface plate (5) toward the front burr (14) and comes into contact with the front flash (14) to position the front end. In addition, the front end of the paper enters under the paper gripper (42).

When the front end of the sheet is positioned, the front end of the sandwiching pieces (28) (30) is moved from the standby position by the rotary drive (36) with the sandwiching device (27) waiting at the fixed position open. Is moved to a position corresponding to entering the notch (40) of the paper surface plate (5). The clamp (2
7) is closed by the fluid pressure cylinder / plunger device (29) and holds the side edge of the paper.

After that, the nipping device (27) is laterally moved in a predetermined direction until one side edge of the paper nipping it hits the lateral edge of the paper surface plate (5), and the side edge of the paper is positioned. It is preferable that the lateral movement of the clamp device (27) is not a lateral movement, but is a movement accompanied by a slight deviation toward the front (on the side of the front beam (14)). According to this, the side edge positioning can be performed while maintaining the regulation of the front edge position of the sheet.

After the side edge of the paper is positioned, the paper gripper (42) is lowered to press the paper against the upper surface of the paper surface plate (5). The claw (42)
Until the paper is pressed against the paper surface plate (5) with the brush (15)
Keeps spinning.

From the table (4) to the paper surface plate (5) by the paper feed carriage (1)
Since the paper transferred to the location of the paper and placed on the paper surface plate (5) is brought into contact with the front edge of the paper (14) by the brush (15) rotating in a predetermined direction, the paper is sucked by the sucker (3). Even if the time when the sheet is sucked and released is shifted, in other words, even if the sheet placed on the sheet surface plate (5) is displaced forward and backward, the sheet front end position regulation is accurately achieved. Furthermore, as a result, the end contact of the side of the sheet with the lateral beam due to the lateral movement of the sandwiching device (27), that is, the end side positioning, is also accurately performed as set.

In this way, the present invention brings about the advantage that mechanical paper power can be used effectively.

At the same time when the blanket cylinder carriage (45) starts moving from the water rod side to the ink kneading roller (46) side, or at the beginning of the movement, the paper feed carriage (1) is returned to its original position.
Then, the blanket cylinder carriage (45) returns to the roller (46) side.

Next, the paper discharge carriage (2) waiting at the fixed position is driven by the motor (12), and the suction cup (10) from the standby position finishes the proof printing on the paper surface plate (5). To the position corresponding to the fixed position of the upper surface of the paper platen (5), and the suction cup (10) is actuated to suck the proof-printed paper at the moved position. .
At that time, the suction cup (10) is pressed against the paper on the paper surface plate (5) by the fluid pressure cylinder / plunger device (25).

After sucking the paper, the suction cup (10) is lifted to lift the sucked paper from the paper surface plate (5). At the time of this lifting, the air nozzle (43) standing by at the fixed position is lifted up to the height corresponding to the upper surface of the paper surface plate (5) by the fluid pressure cylinder / plunger device (44), and the air nozzle (43) releases air from the air nozzle (43). Is sprayed on the gripper side of the paper between the paper and the platen (5). This blowing air ensures that the paper is lifted by the suction cup (10) from the paper surface plate (5). Therefore, automatic paper ejection described later by the paper ejection carriage (2) is also successfully performed. At a suitable point in time until the return movement of the paper ejection carriage (2) begins, the paper gripper (42) is lifted to free the paper.

Following the lifting of the paper, the paper discharge carriage (2) is returned to its original position, where the suction of the suction cup (10) is released. The freed paper falls on the paper output table (11).

After lifting the paper from the paper surface plate (5), air nozzle (43)
The air blowing is stopped and the air nozzle (43) is lowered to the original position at an appropriate time until the paper starts to be discharged from the paper surface plate (5).

In the proofreading machine of the present invention of the illustrated embodiment, a sensor detects the degree of decrease of the paper on the table (4), and when the stacking height of the paper is lowered to a certain point, the table (4a) is used by the motor (4a). 4) is designed to be lifted to a fixed position.

In the case where the motor (6) for reciprocating the paper feed carriage (1) and the motor (12) for reciprocating the paper discharge carriage (2) are of a rotation amount controllable type, the carriage can be used for various sizes of paper. The reciprocating range of (1) and (2) can be changed to the required degree.

Effects of the Invention According to the present invention as described above, it is possible to provide a multicolor offset proof machine that can effectively perform paper insertion by mechanical force and can also automatically perform automatic paper ejection by mechanical force.

[Brief description of drawings]

FIG. 1 is an overall schematic side view showing an embodiment of the present invention, and FIG. 2 is a plan view thereof. FIG. 3 is a plan view showing a state in which the paper feed carriage is moved to a position of a paper surface plate, FIG. 4 is a side view thereof, and FIG. 5 is an elevation view of a system for reciprocating the paper feed carriage and a guide rail. FIG. 6 is a plan view of FIG. FIG. 7 is a plan view of the paper discharge carriage, FIG. 8 is a side view thereof, FIG. 9 is a side view of the sandwiching device, FIG. 10 is a plan view thereof, and FIG. 11 is a front view of the sandwiching device. FIG. 12 is a side view of the air nozzle, and FIG. 13 is a plan view thereof. (1) ... Paper feed carriage, (2) ... Paper discharge carriage, (3) ... Paper feed carriage suction cup, (4) ... Paper base, (5) ... Paper surface plate, (6) ... … Motor for reciprocating paper feed carriage, (10) …… Sucker of paper ejection carriage, (1
1) …… Paper stand, (12) …… Motor for reciprocating the carriage, (14) …… Front beam, (15) …… Brush, (43)
...... Air nozzle

Claims (1)

[Scope of utility model registration request] 1. A motor that reciprocally holds a proof sheet by a motor between a position corresponding to the suction plate facing the paper table and a position corresponding to the upper surface of the platen. A moving type of paper feed carriage, and a type that holds the printed paper releasably by a suction cup, and a portion corresponding to the suction cup facing the fixed position on the upper surface of the paper surface plate and a portion corresponding to facing the paper discharge table. A paper ejection carriage of a type reciprocating by a motor is provided between the paper feeding carriage and a predetermined direction so that the paper loaded on the paper surface plate is pushed to the side of the front edge of the paper front edge of the paper surface plate. A brush which is rotated to the side of the paper surface plate, and releasably clamps the side edge of the paper placed on the paper surface plate, and one side edge of the sandwiched paper of the paper surface plate. Positioning the edge of the paper For example, at a height corresponding to the upper surface of the paper surface plate in proximity to the tail edge side of the paper Kamijo platen, multicolor offset proof press placing the lowerable air nozzle.