JPH051754U - Switching device for normal paper receiving position and temporary paper receiving position in the sheet ejection unit of the sheet-fed printing press - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides an apparatus for automatically inserting a primary paper receiving plate and falling a paper pad. [Structure] The operation of a tiltable paper pad that positions the front end of the paper carried on the pile base, and the temporary paper receiving plate that is inserted in the middle of the paper stacked on the pile base and supports the upper paper. A switching device for switching between a normal paper hitting position and a temporary paper receiving position in a sheet ejecting unit of a sheet-fed printing press, in which a rotation mechanism that applies a predetermined amount of forward and reverse rotations to the common shaft is provided at the end of the common shaft on which the operation is performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for rotating a common shaft of a temporary paper receiver and a paper catching device in a paper discharge section of a sheet-fed printing press.

[0002]

[Prior Art]

 FIG. 8 shows a conventional temporary paper receiver and a paper catching device provided in the paper discharge section of a sheet-fed printing press. The temporary paper receiving device 1 includes a bracket 3 fixed to the central portion of a cross beam 2 mounted between a driving side frame and an operating side frame, a temporary paper support plate 4 fixed to the tip of the bracket 3, and a temporary paper. A temporary paper receiving plate 6, which swings through a window 3a opened in the contact plate 4, a shaft 8 rotatably attached to the bracket 3 and the drive side frame, a pair of levers 5 fixed to the shaft 8, and a common Between the operating lever 12 fixed to the shaft 13 and the connecting lever 7 fixed to the shaft 8, the rod 9 and the spring receiver 10 and the operating lever 12, which are swingably attached to the drive side frame. It is constituted by the spring 11 provided in the. Further, the paper catching device 17 includes a common shaft 13 rotatably supported by a driving side frame and an operating side frame, a plurality of paper pads 14 mounted on the coaxial 13, a balance weight 15, a handle 16 and the like, When the handle 16 is operated, the common shaft 13 is rotated to take a normal paper contact position shown by a solid line and a temporary paper receiving position shown by a chain line. At the normal paper position, a sheet of paper (hereinafter referred to as a paper) bitten by the claws of the chain gripper 18 and carried on the stacking device is used when the claws of the chain gripper 18 are opened by a claw opening / closing device (not shown). The pile 14 is piled up on the pile base 19 by hitting the pad 14 and determining the position in the traveling direction (vertical direction). At the temporary paper receiving position, the paper on the pile table 19 is conveyed by the temporary paper receiving plate 6 of the temporary paper receiver 1 to check the printing state at the start of printing or during the printing operation. While receiving the paper whose position in the vertical direction is determined by the contact plate 4, it can be pulled out from the space between the paper pad 14 and the temporary paper receiving plate 6 which are tilted in the traveling direction. At this time, the limit switch 21 operated by the operation lever 12 attached to the common shaft 13 stops the automatic lowering of the loading device.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional technique has the following problems. (1) When the other hand, for example, the printing condition of the extracted paper is checked while the handle is left at the position shown by the alternate long and short dash line in FIG. The paper grip is pushed up, or conversely, the paper is rolled up by the chain gripper, and the operation of the printing machine suddenly stops. (2) Since the handle travels from the end of the paper output unit, it interferes with other work. (3) When the printing machine is operating at high speed, unless the operation of tilting the handle to the position indicated by the chain line is quick, make sure that the temporary paper receiving plate is used to skew the conveyed paper or use the chain gripper. Roll up the paper on the temporary paper receiving plate. If the handle is pushed down quickly with a strong force, the root of the handle on the common axis will be damaged by repeated stress.

An object of the present invention is to solve the above-mentioned problems in the prior art and to provide an apparatus that automates the insertion of the primary paper receiving plate and the falling of the paper.

[0005]

[Means for Solving the Problems]

 Usually, in order to correct the above-mentioned problems caused by using the handle for switching between the paper contact position and the temporary paper receiving position, and to perform the switching automatically, (1) the primary paper receiving plate And a common shaft for operating the paper pad is rotated by using a rocking device. (2) The rocking device is operated by the operation switch. When the switch is turned on, the temporary paper receiving position is set, when the switch is turned off, the normal paper receiving position is set, and when the switch is turned on, the automatic lowering of the stacking device (pile stand) is stopped.

An air-actuated actuator or an electric motor is used as the rocking device.

[0007]

[Action]

 Actuating the solenoid valve with a push-button switch causes the actuator to rotate the common shaft, so switching between the normal paper contact position and the temporary paper receiving position is performed remotely. The return from the temporary paper receiving position to the normal paper receiving position is automatically performed because the switch is automatically returned to the off state by releasing the push button switch or by the timer.

[0008]

【Example】

 FIG. 1 to FIG. 3 show an embodiment of a switching device for switching between the normal paper hitting position and the temporary paper receiving position in the sheet discharge unit of the sheet-fed printing press according to the present invention. The components of the temporary paper receiving device 1 and the paper catching device 17 are the same as those shown in FIG. 8 described above, but in the present invention, the handle 16 and the limit switch 21 attached to the common shaft 13 of FIG. Instead, the common shaft 13 is extended to the outside of the operation side frame, and the fan gear 33 is fixed to the extended shaft end, and the pinion 32 meshing with the fan gear 33 is operated by air. It is attached to the output shaft 31a of the rotating cylinder 31. Therefore, when the rotating cylinder 31 rotates, the common shaft 13 also rotates. Air is supplied to and discharged from the rotating cylinder 31 by turning on / off the push-button switch 35 to turn the solenoid valve 34 on and off. When the solenoid valve is turned on (excited), the air is supplied. The rotary cylinder 31 rotates to take the temporary paper receiving position between the temporary paper receiver 1 and the paper catching device 17, and the push-button switch 35 releases the hand from the temporary paper catching position to the normal paper catching position. The push button switch 35 is automatically returned to the off position by a timer or a timer (not shown), so that the air is discharged from the rotating cylinder 31 via the demagnetized solenoid valve 34, and the air is not supplied. Is due to the rotation cylinder 31 rotating in the opposite direction.

The actuator for rotating the common shaft may be either a rotary type or a reciprocating type, and various known mechanisms are used as means for connecting the actuator and the common shaft by each type. For example, a mechanism is used in which a rotary actuator is directly connected to a common shaft or attached via a gear, and a reciprocating actuator is connected to a common shaft via a rack and pinion or a link mechanism.

[0010]

[Effect of the device]

 The switching device for switching between the normal paper position and the temporary paper receiving position in the sheet discharger of the sheet-fed printing press according to the present invention includes a tiltable paper pad operation for positioning the front end of the paper carried on the pile base, At the end of the common shaft, which is inserted in the middle of the paper stacked on the pile base and supports the upper paper, a rotation mechanism is provided at the end of the common shaft that gives a certain amount of forward and reverse rotation to the common shaft. By providing, the following effects can be obtained.

The common shaft on which the paper catching device and the temporary paper catching device are attached is rotated by an actuator, and the switching between the normal paper catching position and the temporary paper catching position can be remotely controlled by a push button switch via an electromagnetic valve. . Moreover, the return to the temporary paper receiving position and the normal paper receiving position can be automatically performed by releasing the hand from the push button switch or by the timer, and the temporary paper receiving position is left for a long time. There is no such thing. Therefore, it is possible to prevent skewing of the paper due to this leaving and machine stoppage due to winding. Also, since the actuator is mounted on the side of the frame, it does not interfere with other work. The common shaft, which is rotated by the actuator, rotates rapidly with a constant force, so that the above two positions can be switched smoothly regardless of the speed of the printing press.

[Brief description of drawings]

FIG. 1 is an overall side view of an embodiment of the present invention.

2 is a front view of the common shaft rotating mechanism of FIG. 1. FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a front view of another type of common shaft rotating mechanism.

FIG. 5 is a side view of FIG.

FIG. 6 is a side view of another type of common shaft rotation mechanism.

FIG. 7 is a side view of another type of common shaft rotating mechanism.

FIG. 8 is an overall side view of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temporary paper receiving device 6 Temporary paper receiving plate 13 Common shaft 14 Paper pad 17 Paper holding device 19 Pile stand

Claims (1)

[Claims for utility model registration] [Claim 1] The operation of a tiltable paper holder for positioning the front end of the paper carried on the pile base, and the insertion between the paper stacked on the pile base. A sheet ejecting unit for a sheet-fed printing press, characterized in that a rotating mechanism for imparting a predetermined amount of normal and reverse rotation to the common shaft is provided at an end of the common shaft for operating a temporary paper receiving plate that supports upper paper. Switching device between normal paper contact position and temporary paper receiving position in.