JPH01285550A - Connecting system for web - Google Patents

Abstract

PURPOSE:To enable a transfer to be easily performed of a web from its consistent manufacture to single operation or in a reverse way to the above by providing a connecting bed having a web suction part, first arm with the first web suction part opposed facing to one of the webs and the second arm with the second web suction part opposed facing to the other web. CONSTITUTION:In case of a transfer from consistent manufacture to single operation, a web, in a condition that it continuously passes through from a process A to a process B along a guide roller of a connecting bed, is cut by the connecting bed 42. Next the web, cut and fed coming, is sucked by the first web suction part 56 of the first arm 44 and rewound by the first rewinding part following turning the first arm. Simultaneously with the above, the second arm 46 is turned, and a new web, sucked by the second web suction part 60 of the second arm 46, is wound back toward the process B from the second rewinding part. By the method thus obtained, the transfer is performed from the consistent manufacture to the single operation. Subsequently, when the web is reset to the consistent manufacture, the webs in the first rewinding part and the second backwinding part are sucked by the two arms and connected on the connecting bed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a web joining system, and in particular to a system for joining webs, and in particular, a method for controlling the running direction of continuously running thin strips of plastic, paper, metal foil, etc. (hereinafter referred to as webs). This invention relates to a joining system that allows arbitrary joining switching in two directions.

[Conventional technology]

For example, in a production line for photographic film supports, A
There are processes (extrusion and drying of the film), B process (subbing layer application to the film), and C process (post-processing), and if you want to perform only the B process continuously, the joining device can be connected from the two unwinding units. It was common to rewind the web alternately through the web.

By the way, as a web joining device, various butt joining devices have been proposed in the past.
461, Japanese Patent Publication No. 49-12329, and Japanese Patent Application Laid-Open No. 50-84670, a cutting drum and a cutting/splicing drum superimpose a new web on which unwinding begins and an old web after unwinding. An apparatus is disclosed in which the leading end of a new web and the end of an old web are joined by a cutting/joining drum and a joining drum using a joining tape.

Another conventional web butting device was published in Japanese Patent Application Laid-Open No. 55-74.
No. 940, JP-A-55-74941, JP-A-55-74942, JP-A-59-102762, and JP-A-59-102763.

Yet another web joining device is disclosed in Japanese Patent Application Laid-Open No. 55-48144.

[Problem that the invention seeks to solve]

However, these web joining devices do not have the function of switching the running direction of a continuously running web, so in order to realize an integrated manufacturing system that connects the A process, B process and C process and continuously winds it into a roll shape. It was not suitable for

Furthermore, the step A requires a long time for start-up and stop, heat-up and heat-down, and preparation of film property conditions. Further, the B process involves liquid switching, application condition switching, process cleaning, etc. in response to a wide variety of products, and it is difficult to perform the switching work while the web is running. Furthermore, since step C involves high-temperature treatment, the web wrinkles and breaks during cutting when the web is stopped.

When these processes are operated consistently, the entire production line must be stopped due to changeover or trouble after the B process, which requires a lot of time to restart and significantly reduces production efficiency.

In addition, even if winding and unwinding sections are installed between each process, there is no good joining system, so the line must be slowed down to an extremely low speed and changed manually. Therefore, line operation with a small number of people is not possible. This has the drawback of increasing operating costs.

Furthermore, it is not possible to perform individual processing of each process (processing of processes B and C up to start-up of process A), resulting in a large number of non-operating processes and a decrease in production efficiency.

The present invention has been made in view of these circumstances, and enables joining of webs in the middle of the process, making it possible to easily shift from integrated web manufacturing to an independent independent process.
Another purpose is to propose a web joining system that can be easily transitioned from stand-alone operation to integrated production.

[Means for solving problems]

In order to achieve the above object, the present invention is a joining system that is arranged between each processing process of the web, and includes an inlet accumulator that can store the incoming web, and an inlet accumulator that can store the web that is sent from the inlet left accumulator. a web winding section to be wound; a splicing table having a web suction section; a first arm having a first web suction section and moving between the web winding section and the splicing table web suction section; an outlet accumulator that can send out a web that has been rolled up; a web unwinding part that has a pre-wound web and that rewinds the web to the outlet accumulator; and a second web suction part, It is characterized in that it is equipped with a second arm that moves between the section and the joining table, so that the traveling direction of the continuous web can be switched between two directions.

[Effect]

In the case of transitioning from integrated production to independent operation, the joining system of the present invention cuts the web on the joining table while the web is continuously passing from the A process to the B process along the guide rollers of the joining table. Next, the cut and fed web is wound up by the first winding section by operating the first arm. Next, by operating the second arm at the same time as the first arm, a new web is rewound from the second unwinding section toward the B process. In this way, it is possible to move from integrated production to independent operation.

In addition, when transitioning from independent operation to integrated production, the web being wound by the first winding section is cut, the web is sucked by the first arm, and at the same time, the web is sucked from the second unwinding section. The web being rewound is cut and the web is transferred to the second web.
After that, the first arm and the second arm are rotated, and both ends of these webs are joined by a joining table, so that the web can be continuously flowed.

〔Example〕

Preferred embodiments of the web joining system according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a schematic diagram of a web joining system according to the invention. FIG. 1 shows a production line for photographic film supports, in which a film base such as polyester is extruded and dried in step A 14.

Next, the web 12 is coated with a subbing layer (undercoating) in step B 16. Finally, the web 12 is post-treated on top of the subbing layer in step C 18. The post-treated web 12 is adapted to be wound around a winding core 20 as a photographic film support.

Further, a joining unit 2 is provided between the A process 14 and the B process 16.
A similar joining unit 22 is also arranged between the B process 16 and the C process 18. The joining unit 22 includes an accumulator part 23, a joining part 24, a winding part 26, and an unwinding part 2, as shown in detail in FIG.
It consists of 8. The accumulator section 23 stores the web, the joining section 24 has the function of cutting and joining the web 12, and the winding section 26 receives the web from step A 14 (or step B 16) after cutting the web. It is designed to wind the web. Further, the unwinding section 28 is adapted to rewind the web to the B process 16 (or C process 18).

FIG. 2(A) shows the structure of the joining unit 22, which is connected to the accumulator section 22 as described above.
3, a joint section 24, a winding section 26, and an unwinding section 28.

First, the accumulator section 23 will be explained based on FIG. 2(B). The accumulator section 23 has an inlet accumulator 30 and an outlet accumulator 32 above the joining unit 22. The inleft accumulator 30 includes a plurality of guide rollers 3
4A, 34A... are rotatably supported, and a plurality of guide rollers 3 are mounted on the accumulator table 35A.
4B134B... are rotatably supported. Also, below it is a pair of in-left stop rollers 36.
36 are arranged in a state where they are in contact with each other. moreover,
In the outlet accumulator 32, a plurality of guide rollers 38A, 38A... are rotatably supported, and further, a plurality of guide rollers 38B, 38B... are rotatably supported by an accumulator table 35A. Further, a pair of outlet stop rollers 40, 40 are disposed below the outlet stop rollers 40, 40 in rolling contact with each other.

The accumulator table 35A has a first
It rotatably supports moving rollers 35B, 35B, and rotatably supports second moving rollers 35D, 35D at the lower end. The first moving rollers 35B, 35B are placed on the rail 35G, and the second moving rollers 35D, 35D
is placed on the rail 35E. In addition, a first protrusion 35F is disposed between the first moving rollers 35B, 35B, an endless chain 35H is attached to the protrusion 35F, and the endless chain 35H includes drive rollers 35G disposed on the left and right, It is installed at 35G. Further, a second protrusion 351 is disposed between the second moving rollers 35D, 35D, and an endless chain 35H is attached to the protrusion 351. It is installed at 35G. In addition, drive rollers 35G, 35G, 35G, 35 arranged on the top, bottom, left and right
An endless chain 35J is stretched between drive rollers 35G, 35G on the upper and lower right sides of G. Furthermore, a one-way clutch 35L1 motor 35M is disposed on the brake 35 on the support shaft of the upper fabric side drive roller 35G.

Next, the joint portion 24 will be explained. The joining section 24 has a joining base 42, a first arm 44, and a second arm 46. The joining table 42 has a suction section 48 that uses air suction,
First guide roller 50 and second guide roller 52
have. Further, as shown in FIG. 2(C), web pressing rollers 48A, 48A are supported at the center of the suction section 48, and a rotary cap 48B is supported therebetween.

Below the first guide roller 50, a first
An arm 44 is rotatably provided. This first arm 44 is formed with a hollow portion, and the hollow portion forms an air suction portion 56 of the web. Further, as shown in FIG. 2(D), a web pressing roller 56 is attached to the lower end of the first arm 44.
A is arranged below which a rotary cutter 56B is rotatably supported. In addition, the first guide roller 50
A guide roller 57 is provided on the upstream side.

As a result, in the case of an integrated production line, the web 12 sent from the inlet accumulator 30 is sent to the guide roller 50 via the inlet stop roller 36, 36 and the guide roller 57.

On the other hand, a second arm 46 is provided below the second guide roller 52 so as to be rotatable about a shaft 58 . This arm 46 is formed with a hollow portion, and the hollow portion forms an air suction portion 60 of the web. Similarly to the arm 44, the arm 46 also has a web pressing roller 56 as shown in FIG. 2(D).
A and a rotary cutter 56B are provided. Also,
A guide roller 61 is located downstream of the second guide roller 52.
is provided. As a result, in the case of an integrated production line, the web 12 sent through the guide roller 50 is
It is sent to the out-left stop roller 32 via the guide roller 52, guide roller 61, and outlet stop roller 40, 40.

Furthermore, the winding section 26 has a winding roller 62 and a guide roller 64, and the unwinding section 28 has a web roll 66 and a guide roller 68.

The operation of the web joining system according to the present invention configured as described above is as follows.

In the case of an integrated production line, the web 12 is
), in the bonding unit 22, it passes through a first guide roller 50 and a second guide roller 52 and is sent to the next process.

Next, when moving from an integrated production line to independent operation,
Adhesive tape 70 is attached to the web 12A being sucked by the air suction part 56 of the first arm 44 and the web 12B being suctioned by the air suction part 60 of the second arm 46. At the same time, the web 12 absorbed by the suction part 48 of the welding table 42 is cut by the rotary cutter 48B of the welding table 42, and then the first arm 44 and the second arm 46 are cut as shown in FIG. 3(B). Rotated to the position shown. As a result, the adhesive tape 70.7 attached to the web 12A and the web 12B is attached to the web 12 being sucked by the suction unit 48.
0 is attached. Next, the first arm 44 and the second
When the arm 46 of FIG. 3 is rotated to the position shown in FIG.
The web 1 is wound up on a winding roll 62 shown in FIG.
2B is unwound from the web roll 66 shown in FIG. 2A, allowing independent operation. During this time, the web 12 sent from the previous process is stopped by an in-left stop roller 36, 36, as shown in FIG. 2(B), and the web 12B sent to the next process is stopped by an out-left stop roller 40, 40. When stopped, the web 12 in the inlet accumulator 30 is slack and the web 12 in the outlet accumulator 32 is in tension. At this time, the brake 35K is released and the accumulator table 3 is moved to the free side of the one-way clutch 35L.
5A moves toward the outlet accumulator 32 to store the web 12 in the inlet accumulator 30, and discharges the web 12 from the outlet accumulator 32 so that the web 12 can be sent to the next process. In addition, as shown in Figure 3 (C), independent operation is possible,
In left stop rollers 36, 36 and outlet stop rollers 40, 40 unstop the web 12. At the same time, the brake 35K is activated to stop the accumulator table 35A, and the inlet accumulator 30 and outlet accumulator 32 stop functioning as an accumulator. Next, the motor 35
M is activated to slowly move the accumulator table 35A to the standby position on the side of the in-left accumulator 30. In this way, the accumulator section 2
By the operation of 3, it is possible to switch from an integrated production line to an independent movement without stopping the front and rear processes.

Next, when transferring this independent operation to an integrated production line, the web 12 is sucked into the air suction part 56 of the first arm 44 from the state shown in FIG.
and the air suction section 5G, and at the same time, the web 12B is sucked into the air suction section 60 of the second arm 46 to cut the web 12B between the guide roller 68 and the air suction section 60. . Furthermore, the suction part 48 of the joining table 42
Attach adhesive tape 70 to. Next, the first arm 44
and second arm 46 to the position shown in FIG.
and return the first arm 44 and the second arm 46 to the position shown in FIG. 4(C). This allows webs to be supplied as part of an integrated production line. In this case, as in the case of switching from an integrated production line to independent movement, the switching is performed without stopping the front and rear processes by operating the accumulator section 23.

The web used in the present invention includes paper, plastic film, metal, resin coated paper, synthetic paper, and the like. Examples of the material of the plastic film include polyolefins such as polyethylene and polypropylene, vinyl polymers such as polyvinyl acetate, polyvinyl chloride, and polystyrene, polyamides such as 6.6-nylon and 6-nylon, polyethylene terephthalate, polyethylene-2,
Polyesters such as 6-naphthalate, polycarbonates, cellulose acetates such as cellulose triacetate, cellulose diacetate, etc. are used. Further, the resin used for the resin coated paper is typically polyolefin such as polyethylene, but is not necessarily limited thereto, and the metal web includes, for example, an aluminum web.

In addition, the steps to which the present invention is applied include the above-mentioned extrusion/drying,
In addition to undercoat layer application and post-treatment, pre-treatment, recording layer application, overcoat layer application, drying, and repetitions or combinations of these may also be performed.

〔Effect of the invention〕

As explained above, according to the web joining system according to the present invention, the inlet accumulator stores the web sent from the previous process, and the outlet accumulator sends out the stored web to the next process. In between, a joining table having a web suction part, a first arm having a first web suction part supported so as to be opposite to one of the webs, and a first arm having a first web suction part supported so as to be facing the other web. By operating the second arm having the second web suction section, the traveling direction of the continuously running web can be switched between two directions. Therefore, it is easy to switch from integrated web production to independent operation, and it is also easy to return from independent operation to integrated production.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is an explanatory diagram showing a schematic configuration of a web joining system according to the present invention, and FIG. 2 (A) is a front view of a joining unit used in the web joining system according to the present invention. , FIG. 2(B) is a front view of the accumulator section of the joining unit used in the web joining system according to the present invention, and FIG. 2(C) is a front view of the accumulator section of the joining unit used in the web joining system according to the present invention. A front view of the stand, FIG. 2(D) is a front view of the first arm of the joining unit used in the web joining system according to the present invention, and FIGS. 3(A) to (C)
4 is an explanatory diagram showing a transition from an integrated web production line to an independent operation, and FIGS. 4A to 4C are explanatory diagrams showing a transition from an independent web production line to an integrated production line. 12.12A, 12B... Web, 20... Winding core, 22... Joining unit, 24... Joining section, 26... Winding section, 28... Unwinding section, 42.・・・
Joint table, 44...first arm, 46...second arm, 48.56.60...suction part, 50.52
...Guide roller.

Claims (1)

[Claims] A joining system disposed between each web processing step, comprising: an inlet accumulator that can store the fed web; and a web winding section that winds the web fed from the inlet accumulator. , a splicing table having a web suction part; a first arm having a first web suction part and moving between the web winding part and the splicing table web suction part; and delivering the stored web. a web unwinding section having a pre-wound web and rewinding the web to the outlet accumulator; and a second web suction section, the web unwinding section and the joining base having a second web suction section. What is claimed is: 1. A web joining system comprising: a second arm that moves between the two arms, and is capable of switching the running direction of a continuously running web between two directions.