JP3362944B2 - Delivery chain automatic cleaning 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 delivery chain automatic cleaning device for a sheet-fed printing machine such as offset printing.

[0002]

2. Description of the Related Art A sheet discharging unit (delivery unit) of a sheet-fed printing press such as offset printing is provided with a printing unit as described in Japanese Utility Model Laid-Open No. 4-68056 and Japanese Patent Laid-Open No. 5-8374. A pair of left and right delivery chains are arranged between them, and a chain gripper is spanned at a predetermined pitch between the pair of delivery chains, and the printed book received from the printing unit is gripped by the chain gripper and towed and conveyed at a predetermined position. It is common to discharge paper with a stack and stack it on a pallet.
It is usually necessary to replenish grease on a regular basis. Also, in the sheet-fed printing press,
It is usual to spray powder for preventing set-off on the printing surface of each printing sheet.

[0003]

A reliable and simple method for preventing set-off in a sheet-fed printing press is to spray a powder (spray powder) onto the printing surface of each printing sheet as described above. However, if the paper discharge section is composed of a delivery chain, it is necessary to lubricate the delivery chain, and powder adheres to and accumulates on the oil on the surface of the delivery chain. The adhered and accumulated matter becomes a lump and falls onto the book during printing, and the book is soiled. If you can make the delivery chain unlubricated or prevent settling without using powder,
Although such a problem is solved, an alternative means for that is
There are problems in terms of cost, etc.
Therefore, there is no choice but to regularly clean the delivery chain and remove powder by hand using a wire brush.
For example, the work is done by 2-3 people every 2 weeks.
It takes 0 minutes or more, which requires manpower and time, which causes a decrease in productivity. Further, in the manual cleaning, the cleaning state becomes uneven, so that it is immediately soiled again.

The present invention solves such a problem by automatically cleaning the delivery chain of the sheet discharge unit of the sheet-fed printing press, and the spray powder deposited on the oil drops on the printing press. The purpose is to be able to prevent.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an automatic cleaning device for cleaning a delivery chain of a sheet discharge unit of a sheet-fed printing press, which includes an attachment frame attachable to a sheet discharge unit main body, and the attachment frame. A guide member fixed to the frame, a holder member that is connected to a moving actuator such as an air cylinder and moves up and down at a predetermined timing in synchronization with the movement of the delivery chain along the guide member, and is held by the holder member. It is connected to a rotary drive such as a motor and driven to rotate, and it has a working position to clean the delivery chain from the inside as the holder member rises, and a retracted position to avoid interference with the chain gripper as the holder member descends. It is characterized in that it is configured with a wire brush that moves alternately.

The wire brush is preferably connected to the rotary drive using a flexible shaft.

Further, in the delivery chain automatic cleaning device of the present invention, the attachment frame includes two attachment portions which are vertically attached to the delivery frames on both sides of the sheet discharge unit main body from below, and a connecting portion which connects the both attachment portions. Shall consist of
Two guide members are fixed at left and right symmetrical positions of the connecting portion, and these guide members and a holder member which is connected to the moving actuator and moves up and down along the guide member at a predetermined timing synchronized with the movement of the delivery chain. A working position in which the holder is held by the holder member, is connected to a driving device and is rotationally driven, and the delivery chain is cleaned from the inside as the holder member rises,
A pair of wire brushes, which move alternately to a retracted position to avoid interference with the chain gripper as the holder member descends, are provided for each of two delivery chains that rotate inside and outside the delivery frame. It is good to have a structure.

[0008]

The automatic delivery chain cleaning device of the present invention is mounted on the sheet discharge unit body of the sheet-fed printing press by the mounting frame. Then, in a state where the delivery chain is rotated in a loose state during a break time, the wire brush is rotationally driven, the holder member is moved up and down, and the wire brush cleans the delivery chain from the inside at the raised position. In addition, the wire brushes are moved up and down together with the holder member in synchronization with the movement of the delivery chain so that when the chain gripper turns around, the wire brush is retracted to a position where it does not interfere with this.

The wire brush can be connected to the drive device by a flexible shaft, which increases the degree of freedom of arrangement of the device and enables compactness.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the left half of the apparatus according to an embodiment of the present invention, and FIG. 2 is a view taken in the direction of arrow A in FIG. Further, FIG. 3 is a schematic view showing a mounting state of the device, and FIG. 4 is a sectional view taken along line BB of FIG.

In the figure, reference numeral 1 is a paper discharge section of a sheet-fed offset printing machine, and 1A and 1B are delivery frames on both sides of the main body of the paper discharge section. The delivery unit 1 is provided with two delivery chains 2A and 2B along the left and right delivery frames 1A and 1B. These delivery chains 2A and 2B are chain sprockets 3A, which are provided at both ends of a paper take-up cylinder which comes into contact with an impression cylinder of a printing unit to receive printed paper (print book) or a paper discharge cylinder after passing through an intermediate cylinder. 3B and a chain sprocket 4A, 4B provided at the front end of the paper discharge section, and is vertically and forward and backward along a chain guide (not shown) attached to the left and right delivery frames 1A, 1B. It rotates at the same speed, and a predetermined number (eg, 7) of chain grippers 5 are bridged at equal pitches between the left and right delivery chains 2A, 2B. As is well known, the chain gripper 5 has a plurality of grippers 5A, which are normally closed by springs and opened by a cam that rotates together with the impression cylinder of the printing unit. It receives the printed books from the machine, opens them by a cam on the tip sprocket side at a predetermined discharge position, releases the printed books, and stacks them on the pallet 6. Reference numeral 7 in the drawing denotes a vacuum wheel, which supports the rear end portion of the printing book until just before the chain gripper 5 releases it.

In this embodiment, the delivery chain automatic cleaning device shown in FIG. 10 has two mounting portions 11a and 11b vertically mounted from below on the delivery frames 1A and 1B on both sides of the discharge portion main body, and these lower end portions. It has a mounting frame 11 consisting of horizontal connecting parts 11c which are interconnected in position. A pair of guide members 12 are fixed to the connecting portion 11c at symmetrical positions. These guide members 12 are inclined outward at a certain angle with respect to the connecting portion 11c, the lower back surface is fixed to the connecting portion 11c, and the guide rail 12a is obliquely upward on the upper surface.
Are formed.

An air cylinder 13 is arranged in parallel on the lower surface of the guide member 12 and is connected and fixed by bolts. Further, on the upper side of the guide member 12, a holder member 14 having a shoe portion 14a slidable on the guide rail 12a at the lower end and a brush holding portion 14b at the upper end is arranged. Part 1
At 4a, it is connected to the drive shaft 13a of the air cylinder 13.

The brush holding portion 14 of the holder member 14
In b, a cup-type wire brush 15 is arranged parallel to the connecting portion 11c with the brush surface facing outward, and is rotatably supported by a spring 16 while being biased outward. A motor 17 for driving a brush is attached to the rear surface of the connecting portion 11c of the attachment frame 11, and the rotation shaft of the motor 17 and the rotation shaft of the wire brush 15 are connected by a flexible shaft (flex shaft) 18. .

This automatic cleaning device 10 includes a mounting frame 1
The upper ends of the left and right mounting portions 11a and 11b are attached to the left and right delivery frames 1A and 1B with bolts. This attachment may be a one-touch type. Then, the apparatus 10 is operated during a break or the like, and cleaning is performed while slowly rotating the delivery chains 2A and 2B, for example, 2 to 3 revolutions per minute. At that time, while rotating the wire brush 15 by the motor 17, the air cylinder 13 causes the wire brush 15 to move up and down together with the holder member 14 in synchronization with the movement of the delivery chains 2A and 2B. The delivery chains 2A and 2B are cleaned from the inside to remove the adhering powder, and when the chain gripper 5 comes around, the delivery chains 2A and 2B are controlled so as to be retracted to a position where they do not interfere.

According to the present embodiment, the delivery chain can be automatically cleaned in a short time of about 15 minutes by using lunch break or the like without any human labor, and moreover, the cleaning state is uniform and is not easily soiled. Become.

In the above-mentioned embodiment, the holder in which the holder member is moved up and down by the air cylinder and the wire brush is rotated by the motor have been described. However, other actuators or driving devices may be used instead of the air cylinder and the motor. Can of course be used, and the present invention can be implemented in various other modes.

[0019]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the spray powder adhering to the oil on the surface of the delivery chain can be automatically removed by using a simple device during breaks. , It is possible to prevent the powder containing oil from falling during printing and contaminating the book.

[Brief description of drawings]

FIG. 1 is a front view of a left half of a device according to an embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a schematic view showing a mounting state of the device of one embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

1 Paper output section 1A, 1B delivery frame 2A, 2B delivery chain 5 chain gripper 10 Delivery chain automatic cleaning device 11 mounting frame 12 Guide member 13 Air cylinder 14 Holder member 15 wire brush 17 motor 18 Flexible shaft

Claims (3)

(57) [Claims] 1. An automatic cleaning device for cleaning a delivery chain of a sheet discharge unit of a sheet-fed printing press, comprising: an attachment frame attachable to a sheet ejection unit main body; a guide member fixed to the attachment frame; A holder member that is connected to an actuator and moves up and down along the guide member at a predetermined timing in synchronism with the movement of the delivery chain; and a holder member held by the holder member, connected to a rotation drive device, and rotationally driven. A delivery chain automatic cleaning device including a working position for cleaning the delivery chain from inside as the holder member rises and a wire brush that alternately moves to a retracted position for avoiding interference with the chain gripper as the holder member descends. . 2. The automatic delivery chain cleaning device according to claim 1, wherein the wire brush is connected to the rotation driving device by a flexible shaft. 3. The mounting frame includes two mounting portions vertically mounted to the delivery frame on both sides of the paper discharge unit main body from below, and a connecting portion that connects the both mounting portions, and the connecting portion is bilaterally symmetrical. A holder member having two guide members fixed to the position, the holder member being connected to the guide member and moving vertically along the guide member at a predetermined timing synchronized with the movement of the delivery chain, and the holder member. The work position is held by the rotary drive device and is rotated by the rotation drive device, and the working position is to clean the delivery chain from the inside as the holder member rises, and the retracted position to avoid interference with the chain gripper as the holder member descends. And a wire brush that moves alternately to the inside of the delivery frame, The automatic delivery chain cleaning device according to claim 1 or 2, wherein one set is provided for each delivery chain.