JP2003080668A - Turn bar washing method and washing apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for washing off the foreign matter bonded to the outlet part of the printing web wound around a turn bar, and a washing apparatus therefor. SOLUTION: A wire 14 is stretched over the turn bar 10 along the cylinder length direction of the turn bar 10 in close vicinity to the turn bar 10 and rotated along the outer periphery of the turn bar 10 at least at the outlet part of the printing web 8 wound around the turn bar 10 to be slid on the surface of the turn bar 10 to peel the foreign matter adhering to and remaining on the outlet part of the printing web 8 wound around the turn bar 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an offset rotary press, and more particularly to a method and apparatus for cleaning a turn bar for removing foreign matter such as paper dust and ink debris attached to a turn bar that changes the direction of conveyance of a printing web.

[0002]

2. Description of the Related Art In an offset rotary press used for newspaper printing, a printing web is conveyed from a printing machine to a folding section by guide rolls arranged in a web passage. At this time, it may be necessary to change the transport direction of the print web, and the print web is wound around a turn bar obliquely arranged with respect to the transport direction of the print web so that the direction is changed. . The turn bar is generally a fixed bar that does not rotate.
This is because the rotation of the print web is skewed with respect to the axis of the turn bar, and the rotation of the print web causes the print web to move laterally. Therefore, in order to prevent the print web that surrounds the turn bar from being cut by friction, air holes are provided in the surface of the turn bar and an air layer is interposed between the turn bar and the print web to reduce friction.

By the way, when the printing web is conveyed, the printing surface of the printing web slides on the turn bar, so that foreign matter such as paper dust or ink residue may adhere to the surface of the turn bar. Usually, the air layer is present, so the degree of dirt is less than that of other guide rolls, but if you leave this foreign matter attached to the turn bar, it will be transferred to the printing web during printing and the printing surface There is a problem that it gets dirty.
Therefore, it is necessary to remove the foreign matter attached to the turn bar.

Conventionally, the cleaning of the turn bar has been carried out simultaneously with the cleaning of the guide roll. The method is as follows. First, the offset rotary press is slowly operated with the print web set. Next, the cleaning liquid supply means is activated to intermittently supply the cleaning liquid to the printing web.
After that, the printing web impregnated with the cleaning liquid is conveyed through the web passing path, and the cleaning liquid is transferred to the turn bar by sliding on the outer periphery of the turn bar. Since the cleaning liquid is supplied intermittently, after the cleaning liquid is transferred by the printing web impregnated with the cleaning liquid, the turn bar surface is wiped and cleaned by the dry printing web. These steps are repeated to wash the turn bar.

[0005]

However, since the turn bar does not rotate and has a fixed arrangement structure, foreign matter such as paper dust and ink residue adheres to the turn bar. Foreign matter is mainly
It adheres to the gap between the print web and the turn bar, that is, in the vicinity of the end point of the contact surface between the print web and the turn bar. However, since the printing web impregnated with the cleaning liquid passes through the same path as when it is conveyed during printing during cleaning, it is impossible to remove the foreign matter remaining in the portion that does not come into contact with the turn bar.

For this reason, there is a risk that foreign matter that has not been removed during cleaning adheres to the printing web during printing and stains the printed matter. Therefore, foreign matter that could not be removed even though the printing web impregnated with the cleaning liquid was run must be manually wiped off and cleaned, which is time-consuming and laborious and difficult for workers. there were. An object of the present invention is to provide a turn bar cleaning method and device capable of removing dirt on the turn bar.

[0007]

In order to achieve the above object, the present invention cleans a turn bar by rotating a wire rod in the vicinity of the turn bar and rotating the outer periphery thereof to scrape off foreign matter adhering to the surface of the turn bar. Is.

Specifically, in the method for cleaning a turn bar according to the present invention, the filament material is stretched along the trunk length direction of the turn bar in the vicinity of the turn bar, and the filament material is wound along the outer periphery of the turn bar. The feature is that it is moved to remove the deposits on the surface of the turn bar. Further, a linear material is stretched over the print web exit portion of the turn bar, and the linear material is rotated along the outer circumference of the turn bar to scrape off foreign matter adhering to the print web exit portion of the turn bar.

The turn bar cleaning device according to the present invention is arranged such that the linear member is stretched in the body length direction in the vicinity of the turn bar, the supporting member stretches the linear member on the turn bar, and the linear member is the outer periphery of the turn bar. And a guide member for restricting movement along the turn bar, and the linear member can be rotated in close proximity along the outer circumference of the turn bar. At this time, there is a risk that the printing web is cut by the filament material that rotates in close proximity to the outer periphery of the turn bar, and in order to avoid this, the filament material is operated without threading. The turn bar cleaning device includes drive means for rotating the linear member around the turn bar according to the guide member. That is, the outer circumference of the turn bar is used as a means for rotating the linear member,
Install automatic or manual means.

[0010]

With the above structure, the linear member stretched over the print web exit portion of the turn bar rotates along the outer circumference of the turn bar. Thus, during cleaning, the foreign matter attached to the surface of the turn bar is rotated while being scraped, so that the foreign matter can be separated from the surface of the turn bar.

The linear member is guided along the track by the guide member, and is rotated along the surface of the turn bar so as to move mainly at the exit portion where the print web is wound around the turn bar. The operation of the filament material is performed by using a driving means or manually. Further, assuming that a range where foreign matter adheres at the print web exit portion of the turn bar is α, at least the linear member is guided by the guide member in the range of α and rotates along the turn bar. As a result, the foreign matter adhering to the print web exit portion of the turn bar is scraped off by the linear material rotating around the turn bar outer periphery, and the foreign matter adhering to and remaining on the turn bar can be removed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Specific embodiments of a turn bar cleaning method and apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view and a side view of a turn bar cleaning device in the present embodiment, and FIG. 2 is a perspective view of a turn bar peripheral device in the present embodiment.

In an offset rotary press used for printing newspapers, when the printing web 8 is conveyed from the printing machine to the folding section by a web-passing path, the printing web 8 is guided by guide rolls, but the direction of conveyance is changed. May need to be reversed or converted. The change of the transport direction is performed by the turn bar 10.
This is usually the angle between the transport lines before and after the turn is 2
It is arranged in a divided direction, and therefore, it is in a state of being oblique to the front and rear transport lines.

As shown in FIG. 2, both ends of the turn bar 10 are supported by holders 4, and the holders 4 are obliquely fixed with respect to the support shaft 6. The support shaft 6 is attached to the frame 2, and a ball screw 7 is connected to one end of one of the pair of support shafts 6. The support shaft 6 is moved by the ball screw 7, and the position of the turn bar 10 is changed by changing the mounting position of the holder 4 mounted on the support shaft 6, thereby adjusting the transport position of the print web.
In this embodiment, the turn bar 10 is formed in a cylindrical shape,
The turn bar axis is attached to the wall at an angle of 45 degrees.

At this time, the turn bar 10 is fixed to the support shaft 6 without rotating. This is because the rotation of the print web is skewed with respect to the axis of the turn bar 10, and thus the print web 8 moves laterally when the turn bar 10 rotates. When the print web 8 travels on the turn bar 10 fixed in this way, the print web 8 may be damaged by friction between the two. Turn bar 10 to prevent this
Air holes are provided on the surface of the turn bar 10 and the printing web 8.
Although an air layer is interposed between the print web 8 and the turn bar 10, it is sufficient that the air hole is provided at least in the region where the print web 8 and the turn bar 10 are in contact with each other. That is, air holes are formed in the winding region of the print web 8.

A line member is installed near the turn bar 10 as shown in FIG. The wire 14 is used as the filament material in the present embodiment. The wire 14 is disposed along the length direction of the turn bar 10 at the exit portion of the printing web 8 proximate the surface of the turn bar. Turn bar 1
0 between the support members 18 installed at both ends of the wire 1.
4 is tensioned and fixed by the fixing pin 18. At this time, the distance from the turn bar 10 may vary depending on the tension of the wire 14, and thus a mechanism for adjusting the tension of the wire 14 can be attached. That is, the fixing pin 18 is threaded, and similarly the guiding member 12 is also threaded, and the tension of the wire 14 is adjusted by adjusting the amount by which the fixing pin 18 bites into the guiding member 12. Also, the wire 14 is installed in the turn bar 10 with a slight gap.
This is to prevent scratches caused by sliding on the surface of 0.

The wire 14 supported at both ends in this way
Has a mechanism for rotating the surface of the turn bar 10. First, the guide member 1 that guides the trajectory of the wire 14 in order to rotate the wire 14 along the outer circumference of the turn bar 10.
Attach 2. In the present embodiment, the guide member 12 is formed of a plate material, a semicircular arc notch corresponding to the outer circumference of the turn bar 10 is provided, and the bracket 28 is also formed in the semicircular arc.
The turn bar 10 is sandwiched by the guide member 12 and the guide member 12 and fixed by the bolt 20. The guide member 12 includes a wire 14
A guide hole having an arc that is concentric with the turn bar 10 is formed to guide the. When the range in which the foreign matter 34 adheres and remains at the exit portion of the print web 8 of the turn bar 10 shown in FIG. 3 is α, the guide hole can be rotated at least in the range of α along the surface of the turn bar 10. It is arranged. This guide member 12 is attached to the turn bar 1
Attach the guide holes to both ends of 0 so that they face each other.

A wire 14 is inserted in the guide hole of the guide member 12.
1 (2), the wire 14 is attached to the arm 22 of the plate member by the fixing pin 18 on the right side in FIG. That is, the wire 14 passes through the guide hole of the guide member 12 and the arm 2
By attaching to the turn bar 10, the structure is stretched along the turn bar 10.

The arm 2 connecting the wires 14 in this way
2 is attached to the stay 24 with the fastening pin 16. The stay 24 is an elongated flat plate, and a hole for fastening the arm 22 is formed at one end of the stay 24, so that the connecting portion between the arm 22 and the stay 24 can freely move. The other end of the stay 24 is provided with a hole into which the drive shaft of the drive means is fitted, and the stay 24 and the arm 22 are assembled so as to be linked together when driven.

The drive means is for displacing the wire 14 along the outer circumference of the turn bar, and the rotary actuator 26 is used in this embodiment.
A keyway is installed in the rotary actuator 26 and the stay 24. The rotation of the drive shaft of the rotary actuator 26 rotates the dependent stay 24, and this movement is transmitted to the wire 14 together with the support member 18 via the chained arm 22, and thus the wire 14 is turned.
The guide member 12 is rotated around the outer circumference of the.

The rotary actuator 26 is attached to the guide member 12. In this embodiment, all parts related to the turn bar cleaning device are attached to the guide member 12, and the guide member 12 is fastened to the bracket 28 so as to sandwich the turn bar 10. Therefore,
It can be said that the turn bar cleaning device has a structure that can be easily attached to and detached from the turn bar 10.

Such devices are provided at both ends of the turn bar 10, and the rotary actuator 26 is controlled by the controller 30. Therefore, the wires 14 fixed and stretched on both ends of the turn bar 10 can simultaneously rotate around the outer circumference of the turn bar 10.

With the above structure, a series of operations will be described with reference to FIGS. 3 and 4 (1). FIG. 3 is an explanatory view of a turn bar cleaning device according to the present invention, and FIG. 4 shows a concrete example of driving means of the turn bar cleaning device according to the present embodiment.
When the wire 14 rotates from the upper right of the guide hole of the guide member 12 to the lower left of the guide member 12, the two links of the arm 22 and the stay 24 that connect the wire 14 and the rotary actuator 26 are connected from the central axis of the rotary actuator 26 by the guide member 12. You can see that it extends straight to the right of.
Here, the drive shaft of the rotary actuator 26 rotates clockwise, and the stay 24 tilts to the right. Therefore stay 2
Since one end of the arm 22 coupled to 4 is pulled rightward, the other end moves to the lower left along the guide hole of the guide member 12. At this time, the guide hole of the guide member 12 is
Since it is set to be an arc that is concentric with the turn bar 10,
The wire 14 connected to the arm 22 turns an arc concentric with the turn bar 10.

Therefore, the wire 14 is transmitted with the driving force of the rotary actuator 26 via the two links of the arm 22 and the stay 24, and moves along the trajectory set by the guide member 12. That is, the controller 3
When the rotary actuator 26 is driven by being controlled by 0, the drive shaft and the stay 24 are fixed by the key 32, so that the rotational force of the rotary actuator 26 is transmitted to the stay 24 directly connected to the drive shaft. Then wire 1
4 is the foreign matter 3 at the print web exit portion of the turn bar
When the range where 4 is attached is α, at least the range of α is guided by the guide member 12 to rotate. That is, as shown in FIG. 3, since the wire 14 rotates in the range α of the outer circumference of the turn bar 10, the remaining foreign matter 34 is peeled off, so that such foreign matter 34 can be removed.

By the way, when the wire 14 rotates in the range α along the outer circumference of the turn bar 10, the wire 14 intersects with the conveyance path of the print web 8. At this time, since the print web 8 is likely to be cut by the wire 14, it is preferable to remove the print web 8 from the turn bar 10 in advance and then operate the turn bar cleaning device of the present invention. Further, after the foreign matter 34 is removed by the wire 14, it is necessary to return the wire 14 to the original right diagonally lower position so that the wire 14 does not intersect with the print web 8.

In the present embodiment, the wire 14 is displaced by a certain angle according to the guide member 12, but it is also possible to circulate the outer circumference of the turn bar 10. Further, although the wire 14 is used as the filament material, a steel wire such as a wire or a piano wire or a thin rod material may be used.

In the present embodiment, the rotary actuator 26 is used as the drive means for rotating the wire 14, but it is also possible to use a reciprocating cylinder or a drum cam as shown in FIG. Further, in the present embodiment, the guide member 12 is attached to the turn bar 10 as a separate component, but a flange is provided on the turn bar 10 and a guide hole is bored in the flange so that the guide member and the turn bar 10 are integrated. You can get the effect.

By the way, in the above-mentioned structure, the drive means is provided for rotating the wire 14, but it is also possible to manually perform the operation instead of such an automatic operation. An example of manually rotating the wire 14 will be described below with reference to FIG. FIG. 5 shows a front view and a side view of the turn bar cleaning device in the present embodiment.

As in the automatic case described above, the turn bar 10 is supported by the holder 4 on the support shaft 6. At both ends of the turn bar 10, guide members 12 each having a semi-circular arc-shaped plate member provided with guide holes are attached by sandwiching the turn bar 10 with brackets 28 each having a semi-circular shape. The guide hole of the guide member 12 has an arc concentric with the turn bar, and is set so as to rotate at least by a range α in which foreign matter is attached to the turn bar 10. The wire 14 is on the end side of the turn bar 10, that is, in FIG.
It is attached to the left side of (2) with the fixing pin 18 via the arm 22. At this time, the tension of the wire 14 can be adjusted by the fixing pin 18. The arm 22 is displaced along the guide hole of the guide member 12, and moves the wire 14 according to the displacement of the arm 22.

With the above structure, when the arm 22 is manually moved, the wire 14 attached to the arm 22 by the fixing pin 18 moves along the guide hole of the guide member 12. That is, the wire 14 rotates around the outer circumference of the turn bar 10 according to the movement of the arm 22. As a result, the foreign matter 34 attached and remaining on the exit portion of the print web 8 of the turn bar 10 is peeled off by the rotating wire 14. Therefore, the foreign matter 34 on the surface of the turn bar 10 is removed, and the turn bar 10 is cleaned.

At this time, the trajectory of the wire 14 and the conveyance path of the print web 8 may cross each other, and the print web 8 may be cut. For this reason, it is better to rotate the wire 14 after removing the print web 8 in advance. After removing the foreign matter 34, the wire 1
4 needs to be returned to a position where it does not collide with the conveyance path of the print web 8.

Further, in the present embodiment, the wire 14 is rotated by the arm 22, but it is also possible to use a mechanism in which the wire 14 is operated by a pulley or the like. In addition, the guide member 12
Although the above is a separate component, the same effect can be obtained by providing flanges at both ends of the turn bar 10 and providing guide holes therein.

[0033]

With the above structure, the linear member stretched in the vicinity of the turn bar is rotated along the outer periphery of the turn bar,
As a result, the linear material slides on the surface of the turn bar. For this reason, the foreign matter that has adhered to and remains on the print web winding outlet portion of the turn bar is peeled off from the surface of the turn bar by the rotation of the linear member. Therefore, the foreign matter is removed and the surface of the turn bar is cleaned.

[Brief description of drawings]

FIG. 1 is a front view and a side view of a turn bar cleaning device in the present embodiment.

FIG. 2 is a perspective view of a turn bar peripheral device according to the present embodiment.

FIG. 3 is an explanatory diagram of a turn bar cleaning device according to the present invention.

FIG. 4 is a specific example of drive means of the turn bar cleaning device in the present embodiment.

FIG. 5 is a front view and a side view of the turn bar cleaning device in the present embodiment.

[Explanation of symbols]

2 ………… frame, 4 ………… holder, 6 ………… supporting shaft,
7 ... Ball screws, 8 ... Print web, 10 ...
Turn bar, 12 ......... Guide member, 14 ......... Wire,
16 ......... Fastening pin, 18 ......... Fixing pin 20 ......... Bolt, 22 ......... Arm, 24 .... Stay, 26 ...
… Rotary actuator, 28 ……… Bracket,
30 ... Controller, 32 ... Key, 34 ...
Foreign matter, 36 ......... Pulley, 38 ......... Positioning pin

Claims (3)

[Claims] 1. A method for cleaning a turn bar for changing the conveying direction of a print web, the method comprising: extending a filament material in the vicinity of the turn bar along a longitudinal direction of the turn bar, the filament material being provided on an outer periphery of the turn bar. A method for cleaning a turn bar, which is characterized in that the turn bar is swung along to remove deposits on the surface of the turn bar. 2. A cleaning device for a turn bar, which changes the transport direction of a print web, comprising: a support member that extends a line member in the cylinder length direction in the vicinity of the turn bar, and extends the line member to the turn bar. A turn bar cleaning device comprising: a guide member for restricting movement of the linear member along the outer circumference of the turn bar, and the linear member being rotatable along the outer circumference of the turn bar. 3. The turn bar cleaning device according to claim 2, further comprising drive means for rotating the outer circumference of the turn bar of the linear member according to the guide member.