JP2002087665A - Web joining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a web joining device capable of easily conducting web joining work containing pattern fitting. SOLUTION: A first table 7 capable of fixing and holding a web and a second table 9 having a cut groove 9a and capable of fixing, holding the web are arranged so as to form passage 8 between them, nip rolls 1 for carrying the web are arranged under the passage 8, and a camera 14 for detecting register marks 17 of the web is arranged over the web. By this constitution, an old web 4 to be joined is fixed and held with the first table 7 and the second table 9, cut with the cut groove 9b, the web on the second table 9 side is removed, a new web 4A to be joined is passed between the nip rolls 11 through on the second table 9, and while being fed with the nip rollers 11, distance between the register marks 17 is measured with the camera 14 to conduct pattern fitting, after that, the web 4A is fixed and held with the second table 9, cut by utilizing the cut groove 9b, and a joining tape 6 is stuck to easily join the old and new webs 4, 4A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for joining webs in an apparatus for handling webs such as paper and film, such as a web processing machine.

[0002]

2. Description of the Related Art In a web processing machine such as a slitter or a coater, a web drawn from a new material roll is joined to a web passing through the machine, or a defective portion in the web is cut out to cut webs before and after the web. The web connection work such as connecting the end parts of each other is being performed. At this time, it is often necessary to match the web patterns to be connected. 2. Description of the Related Art Conventionally, the work of joining webs by matching pictures is performed manually by a worker using a ruler, a cutter, a temporary fixing tape, a joining tape for web joining (tape having an adhesive layer on one side), and the like. The procedure was followed. 1. On the web roll, the vicinity of the end of the web is cut along a horizontal line using a straightedge to form a connecting edge. If there is a defective portion, the defective portion is cut and removed. 2. Lay the edge of the cut web on the center pattern of the web to be joined, and apply the appropriate pattern with temporary fixing tape cut small while matching the pattern of the end pattern of one web and the center pattern of the other web. Temporarily fix the position. 3. Then, a joining tape for joining is applied over the entire width of the web on the upper surface of the joining portion of the web. Turn the web over and cut off the excess part of the splice using a straightedge. 5. If necessary, a bonding tape is applied to the back side over the entire width of the web, and the joining operation is completed.

[0003]

However, such a conventional method has the following problems. 1. Since the web is cut and bonded on an unstable material roll, the work is difficult, requires a great deal of skill, and requires a long working time. 2. Especially for picture matching, ± 0.5mm on quality level
It is required to keep the size within a certain range, and since the web has curls and the like, it is extremely difficult to perform a picture matching operation, and the operation time is long and requires skill. In addition, since the temporary fixing is performed from the end, the space between the temporary fixing tape and the temporary fixing tape is in a free state, which may cause a slight error in the picture pitch. As a result, the connection quality becomes unstable. 3. It is necessary to temporarily fix the webs together with a temporary fixing tape, which consumes extra material.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a web connecting apparatus which can easily perform a web connecting operation including pattern matching without using a temporary fixing tape. And

[0005]

SUMMARY OF THE INVENTION According to the present invention, in order to easily connect webs, a first table and a second table each having a web holding surface for fixing and holding the web are provided between them. It is arranged at intervals so as to form a passage for passing the web, and a cut groove for guiding a cutter for cutting the web is formed at an end of the web holding surface of the second table on the first table side. And a web feeding means for feeding the web passed through the passage. With this configuration, the web connection operation can be easily performed as follows. That is, first, one of the webs (to be referred to as an old web) to be joined is fixed and held on the web holding surfaces of the first and second tables, and then cut into the webs using cut grooves in the state, and the second table is cut. The side webs are removed, and the other web to be spliced, called the new web, is passed through the passage over the web holding surface of the second table. In this state, the tip of the old web is overlaid on the new web, and it is easy to see whether or not the pattern is correct. Then, when the pattern matches, the new web is stopped when the pattern matches, and the new web is fixed and held on the web holding surface of the second table. Thereafter, the new web is cut using the cut grooves. As a result, the old web and the new web are in a state in which the patterns are aligned and the ends are abutted, and a bonding tape is applied thereon. By the above operation, the old and new webs can be joined easily and in a state where the picture is correctly adjusted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A web connecting apparatus according to an embodiment of the present invention includes a first table having a web holding surface for fixing and holding a web, and a web passing between the first table and the first table. A second table spaced apart so as to form a passage for allowing the web to be fixed and held so that the second table is positioned on substantially the same plane as the web holding surface of the first table. A second table having a surface and having a cut groove for guiding a cutter for web cutting at an end of the web holding surface on the first table side, passing over the web holding surface of the second table, The apparatus further comprises a web feeding means for transporting the web passed through the passage between the first table and the second table. With this configuration, the old web is fixed and held on the web holding surfaces of the first table and the second table, and in that state, the old web is cut using the cut grooves, and the old web on the second table side is removed. Then, the new web is passed through the passageway on the second web holding surface, and while running slowly by the web feeding means, the patterns are aligned, and when the patterns are matched, the new web is stopped, and the web of the second table is stopped. After fixing and holding it on the holding surface, it is cut using the cut groove and the joining tape is pasted on the end of the old web and the new web that are in abutted state, so that the old and new webs are Can be connected by matching the patterns.

Here, it is preferable that at least one of the first table and the second table is movable in a direction approaching and separating from the other. With this configuration, when the new web is passed through the passage formed between the first tape and the second tape, the passage can be enlarged, and the operation of passing the new web through the passage can be easily performed. be able to.

[0008] The web feed means is arranged below the first table and the second table, and has a pair of nip rolls for nipping and transporting the web, and driving means for rotating and driving the nip rolls. Is preferred. With this configuration, by supplying the tip of the web passed through the passage between the pair of rotating nip rolls, the web can be easily passed through the nip roll, and the entire web is evenly (obliquely formed) by the nip roll. Without sending them).

Further, in addition to the apparatus having the above-described configuration, a camera for visually recognizing a register mark or a picture of a web moving on the web holding surface of the second table, and a signal from the camera, the web of the first table being used. It is preferable to provide a control means for detecting that the web fixed on the holding surface matches the picture of the web on the web holding surface of the second table. With this configuration, the pattern matching of the web can be automatically performed without visual check of the operator, so that the burden on the operator can be further reduced and the quality of the pattern matching can be made uniform.

In this case, the stop of the moving new web may be performed manually when the pictures match, but instead, when the control means detects that the pictures of the new and old webs match, It is preferable to provide a function of stopping the rotation of the nip roll. With this configuration, the web pattern can be automatically adjusted and the web can be automatically stopped, and the burden on the operator can be further reduced.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention shown in the drawings will be described below. FIG. 1 shows a paper feeding portion of a web processing machine such as a slitter provided with a web connecting device according to an embodiment of the present invention.
Reference numeral 4 denotes a web roll, 4 denotes a web drawn from the web roll 3, 5 denotes a web connecting device, and 6 denotes guide rolls arranged on both sides of the web connecting device 5. The web connecting device 5 is disposed immediately below the web 4 running between the guide rolls 6 and 6 so as not to contact the running web 4.

FIG. 2 is a schematic perspective view of the web connecting device 5. The web connecting device 5 is provided with a first table 7 having a web holding surface 7a for fixing and holding the web by vacuum suction, and an interval so as to form a passage 8 for passing the web between the first table 7 and the first table 7. It has a second table 9 arranged open. The second table 9 also has a web holding surface 9a for fixing and holding the web by vacuum suction so as to be located on substantially the same plane as the web holding surface 7a of the first table 7. Second table 9
A cutting groove 9 for guiding a web cutting cutter at an end of the web holding surface 9a on the first table side.
b. The end surface 9c of the second table 9 on the first table 7 side has a curved surface smoothly extending from the web holding surface 9a, and the web passing on the web holding surface 9a is smoothly guided by the curved end surface 9c. Like that. The end surface 7c of the first table 7 on the second table 7 side has a curved shape corresponding to the end surface 9c of the second table 9. The first table 7 is fixedly provided at a fixed position on a side close to the processing machine main body 1 (see FIG. 1).
The second table 9 is arranged on the side close to the material roll 3 and is movable in a direction approaching and separating from the first table 7. Thus, by moving the second table 9, the passage 8 can be greatly expanded. The movement of the second table 9 may be performed manually, or may be performed using an appropriate driving unit such as an air cylinder or a motor. Note that, instead of moving the second table 9, the first table 7 may be moved.

Below the first table 7 and the second table 9, there is provided a web feeding means 10 for transporting the web passed downward through the passage 8 further downward.
The web feeding means 10 has a pair of nip rolls 11 and a driving means (not shown) such as a motor for rotating the nip rolls 11.

Above the second table 9, the web registration mark 17 moving on the web holding surface 9a (see FIG. 3).
Alternatively, a camera 14 for visually recognizing the picture is provided, and the camera 14 is connected to control means (not shown). The control means processes the signal from the camera 14 so that the pattern of the web fixed on the web holding surface 7a of the first table 7 matches the pattern of the web on the web holding surface 9a of the second table 9. And a function of stopping the nip roll 11 when the picture matches.

Next, a web connecting operation by the apparatus having the above configuration will be described with reference to FIGS. When the remaining material roll 3 set in the paper feeding unit 2 (see FIG. 1) runs out and it is necessary to switch to a new material roll, the running of the web 4 is stopped, and FIG. The web 4 is vacuum-sucked on the web holding surfaces 7a, 9a of the first table 7 and the second table 9 as shown in FIG. At this time, the stop position of the web 4 is determined so that the cut groove 9b is located at the center of the picture of the web 4, and the position of the registration mark 17 of the web 4 is measured by the camera 14. Hereinafter, this web 4 is referred to as an old web 4.

Next, by holding a web cutting cutter (not shown) in a hand and inserting it into the cut groove 9b of the second table 9, the old web 4 is cut by moving along the cut groove 9b. I do. At this time, since the old web 4 is sucked and held on the table holding surfaces 7a and 9a, it does not move carelessly, and the cutter is guided linearly by the cut groove 9b, so that the old web 4 can be easily moved. And accurate cutting. After cutting, as shown in FIG.
The old web on the web roll side on the second table 9 is removed together with the web roll 3.

Next, as shown in FIG. 4A, the second table 9 is moved in a direction away from the first table 7 to open the passage 8 greatly. Next, a new web roll is set in the paper feeding unit 2 (see FIG. 1), and the new web 4A is pulled out from the roll.
Through a pair of nip rolls 11. Thereafter, as shown in FIG. 4B, the second table 9 is returned to the original position, and the interval with the first table 7 is reduced. As a result, the tip of the old web 4 held by the first table 7 is positioned above the new web 4A.

Next, as shown in FIG. 5A, the nip roll 11 is rotated to run the new web 4A, and during that time, the position of the registration mark 17 of the new web 4A is observed by the camera 14 and the control means. The distance from the registration mark 17 closest to the end of the old web 4 is the registration mark 1.
At this time, the rotation of the nip roll 11 is stopped. As a result, the patterns of the old and new webs 4 and 4A match.

Next, the new web 4A is sucked and held on the web holding surface 9a of the second table 9, and the new web 4A is cut using the cut grooves 9b, and an excess portion of the cut new web is removed. . As a result, the old and new webs 4 and 4A are brought into a state where the ends are abutted in a state where the patterns are matched.
Thereafter, as shown in FIG. 5B, the joining tape 20 is joined to the joint of the old and new webs 4 and 4A in a state where the ends are abutted.
Paste. If it is necessary to attach the joining tape to the back surface of the web, the joined web may be slightly moved, and the joining tape may be attached to the back surface.
As described above, the connection operation of the new and old webs can be performed with a simple operation and without skill, and the connection quality can be further improved and stabilized.

In the above embodiment, the web pattern is adjusted by measuring the interval between the registration marks 17.
The pattern matching is not limited to this, and another method, for example, a method of inputting a joint pattern with the camera 14 and performing image processing to detect that the pattern is matched may be used. Further, the pattern matching may be performed visually.

Further, in the above-described embodiment, the case where the joining operation of the new and old webs is performed has been described. However, this apparatus can also be used for removing defective portions of the web. In that case, FIG.
As shown in (a), after the web 4 is fixed and held on the web holding surfaces 7a, 9a of the first table 7 and the second table 9, and cut using the cut groove 9b, the web to be removed is removed. Is passed through the nip roller 11 through the passage 8 and discharged by the nip roller 11, and thereafter, as shown in FIG.
The pattern matching, cutting, and joining tape bonding may be performed in the procedure described in (b).

Further, in the above embodiment, the web holding surfaces 7a, 9a of the first table 7 and the second table 9 fix and hold the web by vacuum suction. The method is not limited to this, and may be changed as appropriate. For example, a method of holding the web by static electricity, holding of the web by an adhesive tape, or simply holding the web with a magnet or the like may be used.

[0023]

As is apparent from the above description, according to the web connecting apparatus of the present invention, the web connecting operation can be performed easily and without any skill, and the work load can be reduced and the connecting operation time can be reduced. Significant shortening, skillless,
This has the effect of improving the connection quality and stabilizing the connection. Further, the web connecting device of the present invention has an effect that not only a web connecting operation but also a defective portion in the web can be removed.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a paper feeding portion of a web processing machine provided with a web connecting device according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a web connecting device according to an embodiment of the present invention.

FIGS. 3A and 3B are schematic perspective views illustrating the operation of the web connecting device.

FIGS. 4A and 4B are schematic perspective views illustrating the operation of the web connecting device.

FIGS. 5A and 5B are schematic perspective views illustrating the operation of a web connecting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Web processing machine main body 2 Feeding part 3 Raw material roll 4, 4A web 5 Web connecting device 6 Guide roll 7 First table 7a Web holding surface 8 Passage 9 Second table 9a Web holding surface 9b Cut groove 10 Web feed means 11 Nip roll 14 camera

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masato Takano 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Masayuki Murata 1-1-1, Ichigaga-cho, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. F term (reference) 3F064 AA01 AA03 BB02 BB05 BB17 BB33 DA02

Claims (5)

[Claims] 1. A first table having a web holding surface for fixing and holding a web, and a first table spaced apart so as to form a passage for passing the web between the first table and the first table. A two-table, comprising a web holding surface for fixing and holding the web so as to be located on substantially the same plane as the web holding surface of the first table, and having a web holding surface on the first table side of the web holding surface. A second table having a cut groove for guiding a cutter for cutting the web at an end portion, and passing through a passage between the first table and the second table through a web holding surface of the second table. Web connecting device provided with web feeding means for transporting a web. 2. The web connecting apparatus according to claim 1, wherein at least one of the first table and the second table is movable in a direction approaching and separating from the other. 3. The web feeding means includes a pair of nip rolls disposed below the first table and the second table for nipping and transporting the web, and driving means for rotating and driving the nip rolls. The web connecting device according to claim 1 or 2, wherein 4. A camera for visually recognizing a registration mark or a picture of a web moving on the web holding surface of the second table, and being fixed on the web holding surface of the first table by a signal from the camera. 4. The web connecting apparatus according to claim 1, further comprising control means for detecting that the picture of the web and the web on the web holding surface of the second table match. 5. A camera for visually recognizing a registration mark or a picture of a web moving on the web holding surface of the second table, and being fixed on the web holding surface of the first table by a signal from the camera. 4. The web connecting apparatus according to claim 3, further comprising a control unit configured to detect that a pattern of the web and a web on the web holding surface of the second table match, and to stop the rotation of the nip roll.