JP2003072994A - Paper splicing device of rotary press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper splicing device of a rotary press capable of connecting paper by stably and surely sticking the front end of a new roll of paper to a web during running. SOLUTION: This paper splicing device 4 of the rotary press comprises a paster roller 11 for pressing the running web 2 against the outer peripheral surface of the new roll of paper. Right and left arms 9a and 9b supporting the paster roller 11 are installed swingably through compressive springs 16. When a pressing force is not present on the paster roller 11, the right and left arms 9a and 9b are operated integrally with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided in a paper feeding section of a rotary press, and a front end of a new web is attached to a web supplied from an old web to continuously feed the web. The present invention relates to a paper splicing device for a rotary press.

[0002]

2. Description of the Related Art FIGS. 5 and 6 are schematic explanatory views of a conventional splicing device installed in a paper feeding section of a rotary press.
5 is a side view thereof, and FIG. 6 is a front view thereof. 7 (a) and 7 (b) are explanatory diagrams of problems (problems) of the paper splicing device, and FIG. 8 shows an example of a new paper roll tailoring shape (sticking portion). FIG. 9 is a schematic configuration explanatory diagram of a general paper feeding unit installed in a rotary press. The reel stand installed in the paper feed unit 1 of the rotary press is a device in which roll-shaped roll paper for printing is mounted and continuously supplied as a web 2. In the example shown in FIG. 9, the central spindle 2 of the two arms 26 is
7 is rotatably supported by a pedestal 28 erected on the floor, and the arm 26 can be pivotally set to an arbitrary phase position via a rotation drive means (motor) not shown.

The arm 26 is composed of a pair of arms 26a and 26b having a chuck at the tip thereof, and can be independently moved and opened / closed in the axial direction of the main shaft 27. Further, the chuck portion is provided with a motor as a rotation driving means and a rotation speed detection means of the paper roll, so that the peripheral speed of the outer surface of the paper roll can be calculated and measured (not shown). And cross roller 2
Reference numeral 9 denotes a guide roller pivotally supported at the tip of a column 30 arranged in a direction perpendicular to the arm 26.

The paper splicing device 4 shown in FIG. 9 includes a frame 6 that slides along a rail 31 and a paster roller 11 that can come into contact with and separate from the new web 3 and that presses the web 2 against the outer peripheral surface of the new web 3. , A knife 32 for cutting the old paper roll after splicing
And guide rollers 33, 34 for guiding the traveling of the web 2.
And are equipped. Under the above structure, the web 2 of the old paper roll attached to the tip of the arm 26 is the cross roller 2
9 is wound, passed through the guide roller 33, the paster roller 11 and the guide roller 34, the dancer roller section, and further fed to the printing section (not shown) in the next step.

On the other hand, when the remaining amount of the old paper roll, which is consumed by printing, becomes less than a predetermined amount, the web 2 is continuously fed so that the web 2 is connected by a paper splice. In this paper splicing operation, as shown by the solid line in FIG.
After fixing to close to the outer peripheral surface of the new winding paper 3, the new winding paper 3 is rotationally driven to match the running speed of the web 2 of the old winding paper running at the peripheral speed of the roll, and then the tailing position of the front end of the new winding paper 3 is applied. The paster roller 11 is pressed at a predetermined timing to attach the web 2 of the old paper roll to the new paper roll 3.
The web 2 of the old paper roll after the attachment and connection is cut by the knife 32. Thereafter, the paper splicing device 4 is retracted to the position indicated by the alternate long and short dash line in FIG. Note that the old roll paper (remaining base paper) that has become unnecessary due to the splicing of paper is the unwound web 2
After rewinding the tail part of the roll to the original roll side and collecting it, the tail part is rotatably transferred to the position P in FIG. 9 and placed on the lift table 35 of the trolley that stands by at the lifted position by the opening of the chuck, and then the manufacturing line. It moves to the outside and is discharged. continue,
After the carriage carrying the new paper roll 3 is carried into the line and the elevating table 35 is raised to a predetermined height, the new paper roll 3 is clamped from both ends by the chuck of the arm 26 and mounted.

After the carriage is unloaded, the arm 26 is rotated in the direction of the arrow in FIG. 9 to replace the position of the paper roll being supplied with the newly mounted paper roll 3. After that, by repeating the same operation, the paper roll is continuously supplied.
A series of operations for attaching and detaching the new paper roll 3 can be automatically performed through a signal from the control device without stopping the rotary press.

By the way, the conventional pasta roller 11 is
As shown in FIG. 5 and FIG. 6, it is provided in the paper splicing device 4 and is configured to press the running web 2 of the old paper web 3 at a predetermined timing corresponding to the tailing position of the front end of the new paper web 3. . That is, in the conventional paper splicing device 4, the pair of arms 9a and 9b supporting the paster roller 11 are supported.
Is fixed to a shaft 7 which is rotatably supported on a frame 6 of the paper splicing device 4 via a bearing 5 by pins 36 and the like. Further, the head portion of the air cylinder 19 is connected to the tip of the swing arm 17 fixed at another position of the shaft 7 by a pin 37, and the rear end of the air cylinder 19 is connected to the paper splicing device 4. The frame 6 is swingably supported via a fulcrum shaft 18 projecting from the frame 6. Moreover, the air cylinder 19
It is connected to a compressor (air supply source) 22 via a pipe 20, a solenoid valve 21, a pressure reducing valve 25, etc.
It is controlled by a control device 23 electrically connected to. Under the above structure, the paster roller 11 supported by the swing arm 17, the shaft 7, and the arms 9a and 9b can be arbitrarily brought into contact with or separated from the outer peripheral surface of the new web 3 by the expansion and contraction operation of the air cylinder 19. It will be possible.

[0008]

Next, problems of such a conventional paper splicing device 4 will be described. The roll-shaped paper roll 3 is not always mounted on the reel stand as a perfect circle roll due to various factors such as the manufacturing process, the transportation process, the storage state, and the like. In other words, it may be largely eccentric or deformed. However, as described above, the conventional paper splicing device 4 has the paster roller 11
The left and right arms 9a and 9b, which are axially supported, are fixed to the shaft 7 via fixing pins 36, keys, tightening bolts, or the like so that is parallel to the axis of the web 3.
Therefore, the new paper roll 3 is eccentric as shown in FIG. 7A or the outer peripheral surface is deformed as shown in FIG. If they are not parallel to each other, the paster roller 11 is placed on the new paper roll 3.
When pressing, there were the following problems. (1) The width direction of the paster roller 11 comes into partial contact with the outer surface of the new paper roll 3, so that it cannot be pressed evenly on the left and right sides. (2) If the pressing force is weak, the attachment at the time of paper splicing is not sufficient, peeling due to the tension of the running web 2, breakage, paper breakage, etc. may occur, and paper splicing may fail. (3) Failure of paper splicing stops the rotary press, remarkably lowers productivity, consumes a great deal of labor and time to restore it, and sometimes damages the machine.

As a countermeasure against such a problem, (a) the thickness of the elastic body on the outer peripheral surface of the paster roller 11 is increased, the hardness thereof is changed, or (b) the pressing force is increased, which causes an extreme insufficient pressing. A method was taken to prevent it. For example, in Japanese Patent Laid-Open No. 8-169601,
A crimping roller for crimping a running first strip to a starting end with an adhesive member for a second strip wound on a rotating storage roll is disclosed. In the crimping roller, a plurality of gas-filled cells or only one cell is provided between its support tube and a hollow cylindrical elastic crimping sleeve extending concentrically to the support tube. . However, in the pressure-bonding roller disclosed in this publication, it is difficult to adjust the pressure of each part, which may cause a pressing failure in the attachment range, and the structure of the roller itself becomes complicated.

Further, there is a method of eliminating the integral fixing of the paster roller supporting arms 9a and 9b, which is a structural defect of one-sided contact prevention, and making the paster roller 11 swingable along the outer surface of the paper roll, as disclosed in Japanese Patent Laid-Open No. 8-2757. Is disclosed in. In the embodiments of the above publications, (A) two air cylinders are arranged, (A1) a roller shaft with both ends supporting a swing arm type, and (A2) a roller shaft with a cantilever support swing arm. Formulas, (A3) an example in which the roller is directly moved, and (B) an example in which the roller is directly moved by one air cylinder are described in detail. A total of four examples are described below. It is difficult to put it into practical use because of the basic technical problems described in. That is, the current rotary press has been speeded up, and the rotation speed of the above-mentioned new web is about 208 RPM when the diameter is φ1042 mm, and the time for one rotation is only 0.28 seconds. Moreover, if the diameter becomes smaller, 1
The rotation time becomes even shorter. The surface of the new paper roll 3 is
Normally, it is made of double-sided tape as shown in Figure 8,
At the time of paper splicing, the paster roller 11 needs to be operated (approximated) in a space other than the pasting area on the circumference to be pressed stably. The time is about 0.14 seconds. However, in the disclosed example (A) method using two air cylinders, it is impossible to operate the two air cylinders at the same timing phase.
It is well known that large variations occur due to differences in structure and state (operating resistance). Therefore, after the operation, it takes time for both the left and right air cylinders to be pressed stably, resulting in a pressing failure including one-sided contact in the width direction in the sticking range, and as a result, paper splicing failure may occur. Become. On the other hand, according to another example (B) of the disclosure of the publication, the method of linearly moving the roller with one air cylinder has no means for holding and controlling the inclination of the roller at the time of operation, and there is a possibility of pressing with the roller inclination opposite to the outer surface of the paper roll. However, in that case, it is impossible to change the state of uniform pressing along the outer surface of the web in a short time due to friction between the roller and the web. Therefore,
As in the case of (A), a pressing failure will occur.

The present invention has been made in view of the above circumstances, and an object thereof is to improve the conventional problems.
An object of the present invention is to provide a paper splicing device for a rotary press that can stably and reliably attach and connect the front end of a new web to a running web.

[0012]

In order to solve the above-mentioned problems of the prior art, the present invention provides a paper splicing device for a rotary press including a paster roller for pressing a running web against an outer peripheral surface of a new web. The left and right arms supporting the paster roller are swingably provided via springs, respectively, and the left and right arms are integrally operated when the paster roller has no pressing force.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the illustrated embodiments. Here, FIG. 1 and FIG. 2 are explanatory views of the configuration and function of a paper splicing device according to an embodiment of the present invention installed in a paper feeding section of a rotary press, FIG. 1 is a side view thereof, and FIG. It is a front view. 3 and 4 are detailed views of the essential parts of the paper splicing device.

In the paper splicing device 4 according to the embodiment of the present invention, in the paper feeding section 1 of the rotary press, a new web is wound on the running web 2 of the old web whose remaining amount is small so as to continuously supply the web 2. The purpose of the invention is to attach and connect the front end of No. 3 in a stable and reliable manner, and the configuration thereof will be described below.
In the paper splicing device 4 of this embodiment, as shown in FIGS.
A pair of left and right arms 9a and 9b configured to be freely swingable via bearings (or sliding bearings) 8 and the like are provided at both axial ends of a shaft 7 axially supported by the device frame 6 via bearings 5. It is pivoted.

A pasta roller 11 is rotatably supported at the tips of the arms 9a and 9b through a self-aligning type bearing 10, which allows (or absorbs) a certain angle change between the arms 9a and 9b and the paster roller 11. It is configured to be able to. The self-aligning type bearing (the same applies to the spherical bearing) 10 may be a commercially available bearing that allows tilting movement of the rotating body or tilting rotation due to an assembly error. Also, the arm 9 on the shaft 7
Brackets 12a and 12b are fixedly provided in proximity to a and 9b, and adjusting screws 14 are inserted into the tips of the brackets 12a and 12b.
It is connected and supported to pins a and 9b through a pin 13. Therefore, the base ends of the brackets 12a and 12b are connected to the arm 9
The adjusting screws 14 are disposed below the a and 9b, extend obliquely upward, and the adjusting screw 14 intersects the paster roller 11 obliquely downward. Between the support portion of the adjustment screw 14 on the pin 13 side and the brackets 12a and 12b,
A compression spring 16 is incorporated with the adjusting screw 14 inserted. Moreover, as shown in FIG. 4, an adjusting nut 15 is screwed into the adjusting screw 14 on the lower surface side of the bracket 12, and the adjusting nut 15 is a nut that also serves as a retainer for the adjusting screw 14. It is also a stopper that holds the compression spring 16 at the initial setting force.

On the other hand, a swing arm 17 is fixed to one end of the shaft 7. Then, the swing arm 17
An air cylinder 19 is swingably connected to a tip end of the air cylinder 19 by a pin 37, and a rear end of the air cylinder 19 is supported by a fulcrum shaft 18 attached to the frame 6. Further, the connection of the air pipe 20, the solenoid valve 21, the pressure reducing valve 25, and the compressor 22 to the air cylinder 19 and the control device 23 are the same as those described in the conventional section.

The paster roller 11 is set at a standby position such that a slight gap can be formed on the outer peripheral surface of the new paper roll 3 when the air cylinder 19 is fully extended. Based on the above configuration, the paster roller 11 can be pivotally moved about the shaft 7 between the standby position and the operating position where the web 2 is joined to the outer peripheral surface of the new web 3 by the expansion and contraction operation of the air cylinder 19. Has become.

Next, the operation and effect of the paper splicing device 4 of the rotary press according to the embodiment of the present invention will be described. That is,
In the paper splicing device 4 of the present embodiment configured as described above, the front end of the new web 3 is attached to the running web 2 of the old web as in the case described in the section of the related art. It has a series of functions to connect. In addition, the paster roller 11 part presses the running web 2 of the old web at a predetermined timing corresponding to the tailing position of the front end of the new web 3, as shown in FIGS. By operation, the pair of left and right arms 9a, 9
The pasta roller 11 supported on the b is the swing arm 1
Through the shaft 7, the shaft 7, the brackets 12a and 12b, the compression spring 16, and the adjusting screw 14, the outer peripheral surface of the new web 3 can be swung into and out of contact.

In other words, the paster roller 11 of the paper splicing device 4 according to the embodiment of the present invention has the compression spring 16 when the attachment / detachment operation is performed.
The initial setting force (compression repulsive force) of the bracket 12a,
The surface of the adjusting nut 15 serving as a stopper is abutted against the shaft 12b, and the arms 9a and 9b are pivotally moved toward and away from the shaft 7 in a fixed state. When the new winding paper 3 is pressed against the outer peripheral surface, the left and right compression springs 16 contract due to the pressing force respectively, and the paster roller 11 supported by the arms 9a and 9b is inclined along the outer peripheral surface of the new winding paper 3. . As a result, even if the outer surface of the new paper roll 3 is deformed,
The paster roller 11 can apply a sufficient pressing force to the splicing joint evenly over the entire width without causing uneven contact. The pressing force of the paster roller 11 is the spring constant of the compression spring 16, the initial setting force of the compression spring 16, and the pushing amount of the paster roller 11 (air cylinder 1
9 stroke), the air pressure of the cylinder 19 and the like, and can be appropriately adjusted according to the situation such as the width direction length of the paster roller 11 and other specifications of the new web 3 and the like. It was

Therefore, according to the paper splicing device 4 of the embodiment of the present invention, the following effects can be obtained. (1) Since the left and right arms 9a and 9b supporting the paster roller 11 are integrally rocked and separated by one air cylinder 19, the operation of the paster roller 11 is stabilized and the new paper roll 3 is pushed at an appropriate timing. Pressure can be applied. (2) Since the compression spring 16 absorbs the deformation of the deformed outer surface of the new web 3 as well, the paster roller 11 inclines along the new web 3 and applies a uniform pressing force over the entire width. be able to.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and the technical idea of the present invention can be applied within the scope not departing from the gist of the present invention. Various modifications and changes can be made based on the above. For example, although the air cylinder 19 of the above-described embodiment is a single-acting type,
A double-acting type may be adopted, and the circuit of compressed air may be switched via an electromagnetic valve to reciprocate the structure (not shown). Further, instead of the compression spring 16, it is also possible to adopt a structure using a tension spring.

[0022]

As described above, the paper splicing device of the rotary press according to the present invention includes the paster roller for pressing the running web against the outer peripheral surface of the new web, and the left and right arms that support the paster roller. Are configured to be swingable via springs, and the left and right arms operate integrally when there is no pressing force on the paster roller, so the front end of the new web is stabilized on the running web. In addition, it is possible to securely attach and connect the sheets, and it is not necessary to stop the operation of the rotary press, so that the quality and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing a paper splicing device of a rotary press according to an embodiment of the present invention.

FIG. 2 is a front view showing the paper splicing device of the rotary press according to the embodiment of the present invention.

FIG. 3 is a view taken along the line AA in FIG.

FIG. 4 is a view taken along the line BB in FIG.

FIG. 5 is a side view showing a conventional paper splicing device installed in a paper feeding section of a rotary press.

FIG. 6 is a front view showing a conventional paper splicing device installed in a paper feeding section of a rotary press.

7 (a) and 7 (b) are explanatory views showing a defect of the conventional paper splicing device.

FIG. 8 is a schematic view showing a tailored shape of a new paper roll.

FIG. 9 is a schematic configuration diagram showing a general paper feeding unit installed in a rotary press.

[Explanation of symbols]

1 Paper feeder of the rotary press 2 Web 3 New roll paper 4 Paper splicing device 5 bearings 6 frames 7 shaft 8 bearings 9 arms 10 Self-aligning type bearing 11 Pace Tarolla 12 brackets 13 pin 14 Adjustment screw 15 Adjustment nut (stopper) 16 Compression spring 17 Swing arm 18 fulcrum axis 19 Air cylinder

Claims (3)

[Claims] 1. A paper splicing device for a rotary press equipped with a paster roller for pressing a running web against an outer peripheral surface of a new paper roll, wherein left and right arms for supporting the paster roller are swingably provided via springs, respectively. A paper splicing device for a rotary press, wherein the left and right arms are integrally operated when there is no pressing force on the paster roller. 2. The left and right arms are swingably attached to both axial ends of a shaft that is pivotally supported by an apparatus frame,
A bracket is fixedly provided near the arm on the frame, an adjustment screw inserted at the tip of the bracket is connected and supported by the arm, and a spring is provided between a support portion of the adjustment screw and the bracket. The paper splicing device for a rotary press according to claim 1, wherein the adjusting screw is provided with a stopper for holding an initial setting force of the spring. 3. A base end of the bracket is arranged at a lower portion of the arm, a tip end of the bracket extends obliquely upward, and the adjusting screw is arranged so as to intersect obliquely downward with respect to the paster roller. The paper splicing device for a rotary press according to claim 2, wherein: