JPH0739647Y2 - Pusher device for printed material in printing press - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pusher device for an object to be printed in a printing machine for printing an object to be printed which is made of a metal sheet material such as an aluminum plate and a tin plate.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, an accommodating portion 51 for accommodating a sheet-shaped object to be printed and a conveying portion 52 for conveying the object to be printed fed out from the accommodating portion 51 one by one.
And a printing section 53 provided with a plate cylinder 54 for printing the conveyed printing material, a blanket cylinder 55, and an impression cylinder 56, and a pusher device 57 provided in the transportation section 52 covers the printing machine. Print the above blanket cylinder 5
5 and the impression cylinder 56. The sheet pusher device 57
6 and 7, normally, a drive shaft 58 rotatably supported by a machine frame (not shown), a drive unit 59 for rotationally driving the impression cylinder 56, and the power of the drive unit 59 are A power transmission means 60 composed of a gear mechanism for transmitting to the drive shaft 58, a pair of left and right sprockets 61 fixed to the drive shaft 58, a drive chain 62 wound around the sprockets 61, and attached to the drive chain 62. The sheet pusher 63 is provided, and the sheet pusher 63 is configured to press the rear end portion of the printing target to give a conveying force.

At one end of the drive shaft 58, a clutch 64 for connecting and disconnecting the power transmission state of the power transmission means 60, and a fastening bolt 65 for keeping the clutch 64 in the engagement state,
An operation handle 66 for rotating the drive shaft 58 is provided. Then, when the size of the material to be printed changes, the fastening bolts 65 of the clutch 64 are loosened to bring the clutch 64 into a non-fastened state, thereby releasing the connection between the impression cylinder 56 and the drive shaft 58. , The rotary encoder 67 drives 59
While the driving state of the impression cylinder 56 is being rotated by detecting the operating state of, the locking portion of the printing object provided on the circumferential surface of the impression cylinder 56 is set at the reference position, and the tip portion of the printing object is set at the reference position. The drive shaft 58 is rotated by the operation handle 66 so as to align the position of the sheet pusher 63 to adjust the installation position of the sheet pusher 63, so that the leading end of the printing material is supplied to the locking portion at an appropriate timing. Is being set to.

[0004]

In the pusher device having the above-mentioned structure, the installation position of the pusher must be adjusted by manually rotating the operation handle each time the size of the material to be printed changes. There is a problem that this work is complicated. In addition, when jamming occurs in the printed material, the torque relay provided on the drive shaft operates to change the relative position between the engagement portion of the impression cylinder and the seat pusher, and the complicated adjustment work is performed. There was a problem that had to be.

The present invention has been made to solve the above-mentioned problems, and the installation position of the sheet pusher can be easily and properly adjusted according to the dimensional change of the printed material, and the tip of the printed material can be applied to the impression cylinder. It is an object of the present invention to provide a pusher device for an object to be printed in a printing machine, which can perform the above-mentioned position adjustment so as to be accurately fitted to the locking portion of the.

[0006]

SUMMARY OF THE INVENTION According to the present invention, an impression cylinder for performing a predetermined printing on an object to be printed, a driving unit for the impression cylinder, a sheet pusher for supplying the object to be printed, and a drive for driving the sheet pusher. A shaft, a power transmission means for transmitting the driving force from the drive unit to the drive shaft, a first clutch for connecting and disconnecting the transmission of the power, a clutch operating unit for operating the first clutch, and a seat pusher drive A rotary drive unit that rotates the shaft, a second clutch that connects and disconnects the transmission of power from the rotary drive unit, a control unit that controls the connection and disconnection of the second clutch, and an operation unit that operates the control unit are provided. It is what has been.

It is preferable that the first clutch actuating portion is configured to mechanically actuate the seat pusher. The seat pusher is preferably attached to a drive chain driven by the drive shaft. Further, the power transmission means may be composed of a gear group in which a rotational force is transmitted by meshing a plurality of gears.

[0008]

According to the present invention having the above structure, the clutch is disengaged by operating the clutch operating portion via the control portion by simply operating the operating portion, and the power for the impression cylinder is transmitted to the pusher device. In addition to this, by turning on the clutch of the rotary drive unit, the position of the pusher device can be set by operating the pusher device independently of the impression cylinder by the power from the rotary drive unit. Therefore, the position of the pusher device can be set quickly and accurately.

[0009]

1 and 2 show a conveying section of a printing machine equipped with a pusher device 1 for an object to be printed according to an embodiment of the present invention. The pusher device 1 is composed of a chain conveyor provided with a sheet pusher 2, and is in the form of a sheet conveyed by a first conveyor 3 composed of a belt conveyor arranged behind the sheet conveyor 2 and a second conveyor 4 composed of a chain conveyor. The material to be printed is supplied at a predetermined timing between the blanket cylinder 5 and the impression cylinder 6 provided in the printing section.

That is, the pusher device 1 includes a first shaft (pusher drive) 7 and a second shaft 8 which are rotatably supported by a machine frame (not shown), and both end portions of both shafts 7 and 8 respectively. The driving force of the fixed sprockets 9 and 10, the pair of left and right drive chains 11 stretched over the sprockets 9 and 10, and the driving portion 12 that rotationally drives the impression cylinder 6 is transmitted to the first shaft 7. And a pair of seat pushers 2 are attached to the drive chains 11, respectively. When the first shaft 7 is rotationally driven according to the driving force of the drive unit 12, the drive chain 11 and the sheet pusher 2 move in the conveyance direction of the print target, and the sheet pusher 2 moves the transfer target. The rear end is pushed to apply a conveying force.

The drive unit 12 includes a drive motor 14 disposed on the side of the impression cylinder 6, an intermediate shaft 15 installed in parallel with the impression cylinder 6,
A bevel gear mechanism 16 for transmitting the driving force of the drive motor 14 to the intermediate shaft 15, an intermediate gear 17 fixed to the intermediate shaft 15, and an impression gear 18 fixed to a side end portion of the impression cylinder 6. By transmitting the driving force of the drive motor 14 to the impression gear 18 via the intermediate shaft 15, the impression cylinder 6 is rotationally driven together with the impression gear 18.

The power transmission means 13 has a drive gear 19 fixed to the intermediate shaft 15, a driven gear 20 externally fitted to the first shaft 7 and rotatably supported, and the drive gear 19 and the driven gear 20. A group of intermediate gears 21 arranged between
Clutch (first clutch) 2 installed at the side end of the shaft 7
2 and. The rotational force of the intermediate shaft 15 is transmitted to the driven gear 20 via the drive gear 19 and the intermediate gear group 21.
And the rotational force of the driven gear 20 is transmitted to the first shaft 7 via the clutch 22, so that the drive chain 11 and the seat pusher 2 are driven at a speed corresponding to the rotational speed of the impression cylinder 6. It is like this.

The clutch 22 is, as shown in FIG.
A clutch hub 24 integrally connected to a side end of the first shaft 7 by a key 23, a clutch drum 26 fixed to an outer end of the driven gear 20 by a screw 25, the clutch hub 24 and the clutch drum 26. And a connecting portion 75 for detachably connecting. The coupling portion 75 allows a plurality of clutch plates protruding outward on the peripheral surface of the clutch hub 24 and a plurality of clutch plates protruding on the inner surface of the clutch drum 26 to alternately come in contact with and separate from each other. When the clutch plates are laminated, the clutch plates are crimped to each other so that the clutch is engaged and the rotational force is transmitted. When the clutch plates are separated from each other, the clutch is disengaged so that they rotate independently of each other. ing.

The clutch actuating portion 27 includes a clutch lever 29 whose tip portion is swingably supported by a support bracket 28, and a drive cylinder 30 which is actuated by a hydraulic pressure for vertically moving the base end portion of the clutch lever 29. A shifter ring 76 fitted to the clutch hub 24 so as to be slidable in the vertical direction, and an L-shaped transmission member attached to the clutch hub 24 by a pin 77 at its lower end and swingable around the pin 77. 31 and the shifter ring 7
Reference numeral 6 is connected to an intermediate portion of the clutch lever 29. Further, the shifter ring 76 is pushed upward by the spring on the lower side thereof, and the shifter ring 76 is located above the upper end portion of the transmission member 31 in the clutch non-engaged state. Then, when the shifter ring 76 is lowered from the above state against the force of the spring, the upper end portion of the shifter ring 76 is fitted by fitting the upper end portion of the transmission member 31 inside the shifter ring 76 as shown in FIG. Is pressed inward, and by this pressing action, the transmission member 31
Rotates clockwise around the pin 77 at the lower end and pushes the connecting portion 75 from the lower side by the lower end projecting portion to press the clutch plates together to put them in the clutch engaged state. The operation of engaging and disengaging the clutch is performed by operating the drive cylinder 30 and swinging and displacing the clutch lever 29 in accordance with an input signal input from an operation unit described later.

The first shaft 7 is provided with a torque relay 32 for releasing the power transmission state when jamming occurs, and the boss portion of the driven gear 20 constitutes a drive portion of the second conveying means 4. A drive gear 33 is provided. As shown in FIG. 1, the drive unit of the second transport means 4 includes a driven gear 34 that is rotationally driven by the drive gear 33, and a rotating shaft 35 that rotates integrally with the driven gear 34.
And the chain mechanism 3 that transmits the rotational force to the intermediate shaft 36.
7 and the rotational force of the intermediate shaft 36,
8 and an intermediate gear group 39 that is transmitted to the gear 8. The rotary shaft 35 is configured so that its rotary state is detected by the rotary encoder 40.

At the other end of the first shaft 7 of the pusher device 1, there is provided a rotary encoder 41 for detecting the rotating state of the pusher device 1, and the rotary encoder 41 is provided via a clutch (second clutch) and a timing belt mechanism 42. First
A rotary drive unit 43 including a drive motor that transmits a rotational force to the shaft 7 is provided. Then, as shown in FIG. 4, the detection signals of the rotary encoders 40 and 41 and the input signal from the operation unit 44 including operation switches are input to the control unit 45, and the control signal corresponding thereto is input to the drive motor 14 and The output to the rotation drive unit 43 controls the drive units of the pusher device 1 and the second transport means 4.

In the above structure, first, by operating the operation unit 44 shown in FIG. 4, the operation shown in FIG.
The clutch of the rotation drive unit 43 shown in is turned on, and the rotation drive unit 43 is connected to the first shaft 7 via the belt mechanism 42. At the same time, the drive cylinder 30 is driven to turn off the clutch 22 so that the rotational force from the drive unit 12 is not transmitted to the first shaft 7. Then, by driving the rotation driving unit 43, the first shaft 7 is rotated and the seat pusher 2 is aligned with the reference position. This reference position is
This is a position for waiting for a printing material supplied from the first conveying means 3 and the second conveying means 4, and this position adjustment is performed by operating the operation unit 44, for example, by pressing a push button for setting a reference position. . The control unit 45 receives the reference position setting signal from the operation unit 44,
It is pre-programmed to drive the rotation drive unit 43 by a necessary amount, and the actual rotation amount of the first shaft 7 is measured by the rotary encoder 41, and the measured value is fed back to the control unit 45, so that the first shaft 7 is driven. A predetermined amount required for alignment to the reference position is rotated.

The clutch 22 is operated by operating the operation unit 44.
Is turned off and the drive motor 14 is driven to rotate the impression cylinder 6 to align it with the reference position. This position adjustment is also performed by operating the operation unit 44 in the same manner as above, and the actual rotation amount of the impression cylinder 6 is measured by the rotary encoder 40 and feedback-controlled.

After the above settings are completed, the rotation drive unit 43
The clutch 22 is turned off, the clutch 22 is turned on, and the drive motor 14 is started to start the operation of the printing press. When the clutch 22 is turned on, the rotational force is generated by the intermediate shaft 15, the intermediate gear group 21, the drive gear 33, the driven gear 34, the chain mechanism 37, the intermediate shaft 36, and the intermediate gear group 3.
9 is transmitted to the drive shaft 38 to drive the first conveying means 3 and the second conveying means 4, and the rotational force is transmitted from the intermediate gear group 21 to the first shaft 7 via the clutch 22 to pusher the pusher. The device 1 is driven. At the same time, the rotational force from the drive motor 14 causes the intermediate shaft 15, the intermediate gear 17,
It is transmitted to the impression cylinder 6 via the impression gear 18, and the impression cylinder 6 rotates in conjunction with the pusher device 1 and the conveying means 3 and 4. Then, the printing materials fed from the accommodating section one by one and supplied to the conveying section are conveyed from the first conveying section 3 to the second conveying section 4 to the installation section of the pusher device 1 and provided on the drive chain 11. The rear end portion is pushed by the sheet pusher 2 and is conveyed to the printing unit. The tip of the printing material is the impression cylinder 6
In the state of being locked by the locking portion provided on the peripheral surface of the sheet, the sheet is supplied between the blanket cylinder 5 and the impression cylinder 6 for printing, and then led out to the discharge section.

When the size of the material to be printed supplied to the printing section is changed, or when a trouble such as jamming occurs on the material to be printed and the position of the leading end of the material is misaligned, a detection means (not shown) detects this. When a trouble or the like is detected and the signal is sent to the control unit 45, the drive motor 14 is stopped.

After eliminating the cause of the trouble, the impression cylinder 6 and the pusher device 1 are set to the reference position in the same procedure as the first setting.

As described above, the control unit 45 and the clutch 22 and the clutch actuating unit 27 which are driven and controlled by the control unit 45 are provided, and the clutch 22 is attached / detached via the control unit 45 by the operation of the operation unit 44, the impression cylinder 6 and the pusher device. Since the second reference position is automatically set, the complicated operation of turning the operation handle after manually disengaging the clutch as in the conventional device is not required. The installation position of the seat pusher 2 can be adjusted quickly and accurately. Therefore, it is possible to effectively prevent the situation in which the supply timing of the printed material is deviated from occurring when the size of the printed material supplied to the printing unit changes.

In the case where the clutch is of the electric type, if a power failure or the like occurs during operation of the device while the clutch is connected, the clutch will be disengaged, resulting in misalignment. Since the clutch 22 is a mechanical type, there is no possibility of causing such trouble.

Further, in the above embodiment, the rotary encoder 4 for detecting the rotational states of the rotary shaft 35 and the first shaft 7.
Since 0 and 41 are provided and the detection signals thereof are input to the control unit 45, feedback control is performed so that the operating states of the drive unit 12 and the rotation drive unit 43 match the input values of the operation unit 44. There is an advantage that the work of adjusting the installation position of the seat pusher 2 can be performed more accurately.

[0025]

As described above, according to the present invention, the power transmission means for transmitting the power for the impression cylinder to the drive shaft of the pusher device is provided with the clutch for connecting and disconnecting the power transmission state. The operating part to be operated is controlled from the operating part via the control part, and the rotation drive part for driving the pusher device is separately provided, whereby the pusher device is controlled by the control part independently of the impression cylinder. . Therefore, unlike the conventional device, after the clutch is disengaged by a manual operation, the seat pusher position is set simply by operating the operation unit without the need for a complicated operation of rotating the operation handle. It can be done quickly and accurately. Therefore, it is possible to eliminate the inconvenience of stopping the apparatus for a long time when a dimensional change of the printed material occurs or a trouble such as jamming occurs.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of a pusher device according to the present invention.

FIG. 2 is a perspective view showing a configuration of the pusher device.

FIG. 3 is a cross-sectional view showing a configuration of a clutch and a clutch operating portion.

FIG. 4 is a block diagram showing a configuration of a control circuit of a driving unit.

FIG. 5 is a schematic explanatory diagram showing an overall configuration of a printing machine.

FIG. 6 is a view corresponding to FIG. 1 showing a conventional device.

FIG. 7 is a view corresponding to FIG. 3 showing a conventional device.

[Explanation of symbols]

 1 Pusher Device 2 Seat Pusher 5 Blanket Cylinder 6 Impression Cylinder 7 1st Axis (Drive Shaft) 11 Drive Chain 13 Power Transmission Means 22 Clutch 27 Clutch Actuator 43 Rotation Drive 44 Operation

Claims (4)

[Scope of utility model registration request] 1. An impression cylinder for performing predetermined printing on an object to be printed, a drive unit for the impression cylinder, a sheet pusher for supplying the object to be printed,
A drive shaft that drives the seat pusher, and a power transmission unit that transmits the drive force from the drive unit to the drive shaft,
A first clutch that intermittently transmits the power, a clutch operating unit that operates the first clutch, a rotary drive that rotates the drive shaft of the seat pusher, and a first clutch that intermittently transmits the power from the rotary drive. 2 clutch and the second
A pusher device for an object to be printed in a printing press, comprising: a control unit for controlling engagement and disengagement of a clutch; and an operation unit for operating the control unit. 2. The pusher device for an object to be printed in a printing press according to claim 1, wherein the first clutch actuating portion is configured to mechanically actuate a sheet pusher. 3. The pusher device for an object to be printed in a printing press according to claim 1, wherein the sheet pusher is attached to a drive chain driven by the drive shaft. 4. The power transmission means comprises a gear group configured to transmit a rotational force by meshing a plurality of gears. A pusher device for a printing material in a printing machine.