JPH0564582B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a machine for adhering and processing synthetic resin films such as agricultural polyvinyl chloride films (hereinafter referred to as agricultural vinyl) wound into long lengths with good work efficiency. It is. More specifically, in the width-jointing process of multiple long rolls of synthetic resin film, it requires no special technical skills, is efficient with less manpower, and has a good finish after bonding, with excellent bonding quality. This relates to an adhesive processing machine.

[Prior Art] In recent years, farmers cultivating useful plants have widely adopted methods of promoting or suppressing cultivation of useful plants in greenhouses (greenhouses) for the purpose of improving profitability.

As the covering material for this greenhouse, vinyl chloride resin film (agricultural vinyl), polyethylene film, ethylene-vinyl acetate copolymer film, polyester film, polycarbonate film, glass, etc. are used. Among them, polyvinyl chloride resin film is superior to other synthetic resin films in light transmittance, heat retention, mechanical strength, durability, workability in spreading, house adhesion, economical efficiency, etc. It is the most commonly used.

This agricultural plastic is usually manufactured by calendar processing or extrusion processing, but the thickness accuracy of the film
There are restrictions in terms of quality such as appearance and size of processing machines, and the width of the normally manufactured film is 135 ~
It is 400cm and the maximum width is 4.6m. On the other hand, in recent years houses have become larger and the width of the house is required to be 5.4 m to 12 m or more.

For this reason, agricultural vinyl is usually joined across 2 to 4 sheets, and the bonding methods include high frequency welding, thermal welding, ultrasonic welding, etc. However, from the viewpoint of processing efficiency, strength of the bonded surface, and quality of finish, high-frequency welding using high-frequency sewing machines is the most commonly used method.

The rolls of agricultural vinyl used in this high-frequency sewing machine are usually sold in 100m rolls, and these 100m rolls are usually used to bond and process agricultural vinyl. But this normal 100
In bonding processing using m-rolls of raw fabric, in recent years, the process has been rolled into long lengths due to problems in quality and appearance, such as a decrease in processing efficiency due to the time loss of replacing the fabric, and an increase in the number of vertical joints due to the occurrence of edge lengths. Raw rolls (hereinafter referred to as long rolls) came to be used. However, in places where long rolls are spliced, the unwinding table is
Either a pair of receiving rolls that are not driven, or an iron core method in which the iron core is passed through the paper tube of the raw fabric and the iron core is supported by rollers with bearings at both ends, and the main body of the gluing machine uses the conventional 100 m roll. The current situation is that

[Problems to be Solved by the Invention] The following problems occurred when splicing a normal 100 m roll of original fabric using the conventional method.

(b) Agricultural films for covering houses can be used in widths ranging from 5.4m to 5.4m depending on the width and depth of the house.
It is often 12m long and 20m to 50m long. When the length of the film is 100 m, the overall length of the film is not very long, so it is frequently attached to and removed from the film delivery roll, and each time the film is replaced, the film must be prepared and transported (carried). There are cumbersome operations such as setting on the delivery stand, positioning the adhesive part, and pulling out the original fabric, and since it is not possible to perform width splicing during this time, the operating rate of the adhesive processing machine is reduced.

(b) If the remaining amount of original film (remaining film length) does not reach the length required for one splicing operation,
This results in what is called an end measure and a loss. In addition, in an attempt to reduce film loss due to this edge length,
Collecting end scales and gluing them lengthwise requires extra gluing work (mainly done with a high-frequency welder), and if you spread a film made up of several such end scales together in a house,
Problems arise such as the adhesion of dirt to the bonded overlapping portion, a decrease in light transmittance, and an increased risk of tearing from the bonded portion.

In order to solve these problems, long rolls of original fabric have come into use in recent years. The width joining of this long roll is performed using the following equipment and method.

Receiving roll method: A long roll of original film is placed on one or more pairs of non-driving original film receiving rolls, and the film is pulled by the adhesive roll of the main body of the adhesive machine and the transfer rolls located before and after the adhesive roll. How to stretch out.

Iron core method: A method in which an iron core is passed through the original paper tube, both ends of the iron core are supported by rollers with bearings, and the iron core is pulled out in the same way as the previous method.

However, when these methods are used, especially in the case of the former receiving roll method, there is no trouble when changing the film, but it is difficult to adjust the tension applied to the film. That is, when a long rolled film is thick and heavy at the beginning of unwinding, a large tension is applied in the length direction of the unwound film due to its weight. This tension causes the film to be stretched. In addition, if the roll diameter of the film is too small, the tension applied in the length direction of the film is too small, and the flares and wrinkles such as sagging, waving, and bending inherent in the film will not be corrected and will be adhered. Problems such as mistakes and sparks may occur. This tension changes depending on the weight (number of remaining rolls) of the long roll film, so if long roll rolls with different numbers of rolls are used, each film will be rewound with a different tension and the stretched state will be different. . Therefore, when width-joining is performed, undesirable phenomena such as sagging, bending, and waving appear in the bonded part, resulting in undesirable phenomena in the product after width-joining. In order to correct this difference in tension, the person working on the work finely adjusts the tension by holding down the material with hands, feet, knees, etc., or applying weights to the receiving roll or iron core, based on experience. However, it is difficult to obtain good quality width joint products.

Furthermore, the weight of the long rolled web may cause the web receiving roll to bend, making it difficult to expect smooth feeding. In order to solve this problem, the fabric receiving roll is sometimes divided in the width direction, but it is necessary to align the rotation axes of the fabric receiving roll, and the adjustment is complicated.

In addition, in the latter iron core method, the load of the long rolled material is supported by the iron core with bearings at both ends, so the tension is smaller than in the receiving roll method, but the strength to support the load of the long rolled material is lower. Since an iron core with a 30 mm diameter is used, the weight of the iron core becomes heavy, and the work of inserting and removing the iron core when changing the original fabric requires a lot of labor, making it time consuming and troublesome to prepare and exchange the original fabric.

In addition, since the weight of the long rolled material is supported by bearings at both ends, the iron core and the long rolled material are deflected, making it impossible to pull out the film evenly in the width direction during the bonding process. It is difficult to obtain good quality width joint products. Also, 100m
This becomes even more troublesome when using the original fabric.

Furthermore, after production, the ends of the long rolled web become irregular as they protrude outward or become depressed inward over time. The extent of this varies depending on the winding conditions during production, the cutting conditions during edge trimming, and the environmental conditions during storage. When width joining processing is performed on such uneven raw film using a conventional width joining adhesive processing machine, as it is unwound, the width of the overlapping portion of the left and right ends of different left and right ends of the plurality of long rolled raw films in the length direction changes. As the temperature changes gradually, it is necessary to make fine adjustments to the left and right sides of the feed table and the adhesive roll section, which requires the hands of two or more people. In particular, it is almost impossible to manually adjust the bonded parts when bonding them neatly to the edges or when joining 3 to 4 pieces in the width direction.

In such a situation, the present inventors have developed a method for bonding a plurality of long rolls efficiently, without requiring special techniques or skills, with a small number of hands, and with a uniform bonding width and a good finish after bonding. The present invention has been completed as a result of intensive studies aimed at providing an adhesive processing machine of excellent quality.

[Means for Solving the Problems] The gist of the present invention is to unwind and feed out a plurality of long roll-wound raw films, and to separate left and right ends of the plurality of raw films in the longitudinal direction. In a synthetic resin film width splicing adhesive processing machine in which sheets of synthetic resin film are stacked and fed to a bonding machine for bonding, there is a feed-out roll that rotates multiple rolls of raw film to be spliced from the outer periphery, and a roll before and after the bonding machine that drives the film. Two transfer rolls and an adhesive roll are provided, and the speeds of the original fabric delivery roll, each transfer roll, and the adhesive roll can be adjusted separately, and the overall speed maintains a speed ratio set between them. It is adjustable, and it detects the film position of the overlapped part so that the width of the overlapped part of the synthetic resin film to be bonded is kept constant, and automatically adjusts the original film position and adhesive roll in the width direction of the film. The present invention relates to a long-wound synthetic resin film width splicing adhesive processing machine, which is characterized by being capable of fine adjustment.

The present invention will be explained in detail below.

The adhesive processing machine of the present invention can use 100 m to 3,000 m rolls of original fabric, but preferably 200 m rolls to 3,000 m rolls.
It is preferable to use an original fabric of m rolls to 1,500 m rolls.

If the roll of film is less than 200 m, the frequency of loading and unloading the film on the film feed table increases, and each time the film is replaced, the film must be transported, set on the feed table, and set in the adhesive machine. There is a troublesome work such as positioning of the bonded overlapping parts, and the width joint cannot be performed during that time, so the efficiency of the bonding processing machine is reduced.

Furthermore, if the number of rolls of raw fabric is greater than 1,500 m, the weight will be too heavy, making storage, transportation, and handling inconvenient.

Next, the present invention will be further explained with reference to the drawings.

FIG. 1 is a schematic side view of a synthetic resin film width splicing adhesive processing machine of the present invention. In the figure, 5, 6, 7, 8
is a fabric receiving roll, which is driven by a fabric feed drive motor 27 at an arbitrary speed. 9,1 in the figure
Reference numeral 0 denotes a fabric feeding table, which is driven by a fabric feeding table moving motor 28 at its bottom. A raw fabric delivery platform wheel 24 is attached, and the rail 2
5 in the axial direction of the web. The fabric receiving rolls 5 and 6 are attached to a fabric feeding table 9, and the fabric receiving rolls 7 and 8 are attached to a fabric feeding table 10.

A front transfer roll 13 is provided along the front part of the adhesive roll section 22, and this roll 13 is rotatably supported via a bracket (not shown) and connected to a speed reducer (not shown) via a power transmission mechanism. ) and a drive motor 26, and is driven to rotate at a predetermined speed by the drive motor 26. A rear transfer roll 14 is provided at the rear of the adhesive roll section 22, and like the front transfer roll 13, this rear transfer roll 14 is rotatably supported via a bracket (not shown), and also has a power transmission mechanism. Through the reducer (not shown) and drive motor 2
6, and is rotated by the drive motor 26 at a predetermined speed.

In the figure, 11 and 12 are long rolls of raw film that have been reinforced to prevent bending.
It is forcibly sent out by 7 and 8.

In the present invention, in order to prevent the fabric receiving roll from bending, that is, to prevent the receiving roll from deflecting due to the weight of the long rolled fabric, the fabric receiving roll is divided into two at the center in the width direction, and in addition to both ends, This central part is supported by a pillow block. At this time, the shafts of the bisected receiving rolls are connected and driven and rotated by the same rotating shaft.

In the figure, reference numeral 18 denotes a film adhesive overlapping width detection section, which detects the film position of the forcibly fed films 20 and 21.

In addition, in the figure, pinch rolls 17 are provided at several locations on the rear surface of the rear transfer roll 14. This pinch roll 17 had a bar (not shown) installed between end plates standing on both sides of the bonding machine body, and was rotatably pivoted to the bar at an appropriate interval. It is rotatably supported by each tip of a plurality of arms.

In addition, 22 in the figure is an adhesive roll part, and this figure shows an aspect of a high-frequency adhesive machine, and 15 and 16 are electrode rolls to which high-frequency power is supplied from a high-frequency generator (not shown). The bonded overlapping portion of the film 19 to which the face plate is transferred is pressed and bonded together. The adhesive roll section 22 can be moved together with the adhesive overlap width detection section 18 by an adhesive roll section movement motor 23.

FIG. 2 is a schematic plan view of a mechanism for maintaining the width of the film adhesive overlapping portion of the present invention. With reference to FIG. 2, a mechanism for maintaining a constant width of the bonded overlapping portion of the film by the long-wound synthetic resin film width splicing adhesive processing machine of the present invention will be explained.

In the figure, long rolled original films 11 and 12 are supported and sent out by original film receiving rolls 5, 6, 7, and 8 driven by an original film delivery drive motor 27. Among the sent out films 20 and 21, the end of the film 21, that is, the lower film is detected by the film position detection device 30 in the adhesive overlap width detection section 18, and
2 is slightly moved by the adhesive roll movement motor 23 to correct the adhesive roll position, and at this time the adhesive overlapping width detection part 18 is also moved together. On the other hand, as the adhesive overlap width detection section 18 moves, the film 20
The film position detection device 30 detects the shift in the position of the film end, and the film feed table moving motor 2
8 slightly moves the film feed table 9, corrects the film end position of the film 20, and keeps the adhesive overlap width constant.

FIG. 3 is a schematic front view of holding both ends of the original fabric and pressing it onto the original fabric receiving roll (paper core presser). In the figure, the end of the paper core is held down by a roll 32, and a paper core presser roll 33 is used to prevent the paper core from flying up and to efficiently transmit the drive of the film receiving roll 8 to the long rolled film 1. Insert the inside of the paper core into air cylinder 3.
1, the original fabric receiving roll is pressed in 8 directions.
34 in the figure is a slide rail installed so that this holder can be moved in the direction of the fabric axis,
It is provided below the web receiving roll 8 and above the web feeding table 10.

As for the manner in which the apparatus of the present invention is operated, it is preferable that the front transfer roll is set at a speed 0 to 5% higher (preferably 1 to 2% higher) than that of the web receiving roll.

That is, when the speed of the receiving roll is A and the speed of the front transfer roll is B, A:B=100:100~105
It is better to

If the speed of the front transfer roll is lower than that of the web receiving roll, good adhesion is difficult because adhesion errors and sparks occur due to sagging, waving, bending, wrinkles, etc. of the film.

Furthermore, if the speed difference exceeds 5%, the tension applied to the fed film becomes too large, causing undesirable phenomena such as shrinkage in the width direction of the film or shrinkage of the film after adhesive processing.

Also, the rear transfer roll is 0 to 2 of the front transfer roll.
It is preferable to set the rate of increase by %.

That is, when the speed of the front transfer roll is B and the speed of the rear transfer roll is C, B:C=100:100~
It is better to set it to 102.

If the speed of the rear transfer roll is lower than that of the front transfer roll, sagging, waving, bending, wrinkles, etc. of the humulum will cause adhesion errors and sparks, making it difficult to achieve good adhesion.

In addition, if the speed difference exceeds 2%, the tension applied to the fed film becomes too large, causing shrinkage in the width direction of the film, shrinkage of the film after bonding, and sagging in the bonded area. Unfavorable phenomena occur.

Also, the fabric receiving rolls 5 and 6, the fabric receiving rolls 7 and 8, the front transfer roll 13, and the rear transfer roll 14.
Each motor that drives can be accelerated and decelerated in conjunction with a switch to select between independent and interlocking.

For this purpose, once the fabric receiving rolls 5, 6, fabric receiving rolls 7, 8, front transfer roll 13, and rear transfer roll 14 are set to appropriate speed ratios and operated in conjunction with each other, the speed ratio between each roll will change. You can accelerate and decelerate. Therefore, machining length, speed ratio, reduction ratio,
If you set the rotational speed of the web receiving roll in advance, it will automatically accelerate to the set speed.
Thereafter, it rotates at a constant speed, decelerates at any point before reaching the set machining length, and then automatically stops.

That is, soft start and soft stop are possible.

[Example] Hereinafter, an example of the long winding adhesive processing machine of the present invention will be described using FIGS. 1, 2, and 3.

Example 1 The speed of the web receiving rolls 5, 6 and 7, 8 is set to A
m/min, the speed of the front transfer roll 13 is Bm/min,
Glue lower roller 15 and rear transfer roll 14
When the speed of is Cm/min, A:B:C is 100:
The speed ratio was set to 102:103. Further, the adhesive overlapping width detection section 18 was set so that the film adhesive overlapping section 29 was 20 mm.

A long roll of agricultural vinyl film manufactured by Mitsubishi Kasei Vinyl Co., Ltd. (0.10 mm thickness x 270 cm width x 600 m roll) was set on film receiving rolls 5, 6 and 7, 8 using an appropriate conveyance tool. . Insert the roll 33 of the paper core holder into both ends (4 locations) of the two long rolls of raw material set until the roll 32 comes into contact with the paper core end of the raw material, and operate the air cylinder 31 to remove the paper core. The presser roll 33 was pressed against the inner bottom of the paper core. The film feed-out tables 9 and 10 were moved on the rails by operating the film feed-out motor 28 so that the adhesive overlapping width of the films was 20 mm.

The clutches between the film receiving rolls 5, 6 and 7, 8 and the drive motor 27 were released to allow them to idle, and the bias portion of the film was pulled out and the film was set. (At this time, the adhesive upper roller 1
6 and the pinch roll 17 were moving upward. ) The long rolled raw films 11 and 12 are set, and the adhesive upper roller 16 and the pinch roll 1 are set.
Lowered 7.

The clutches of the web receiving rolls 5, 6 and 7, 8 were engaged, and the drive motors of the front transfer roll 13, adhesive upper roller 15, and rear transfer roll 14 were switched to interlocking. Increase the speed of the web receiving rolls 5 and 6 to 15
The machine was set at m/min and processing length was 100 m, and bonding was started. The bonding speed was gradually increased from 5 m/min to 15 m/min, and when the processing length reached approximately 95 m, the speed was gradually decreased to complete the bonding process. Processing of 100 m was carried out in the same manner five more times, and the long rolled original film was replaced. It took 5 minutes to change the original film until adhesion of the film could begin. There were no adhesion errors or sparks in the bonded film, no flare or sagging of the bonded film, and the bonded overlapping width of the films was constant, resulting in a good bonding process.

Comparative example 1 The speed ratio of A:B:C is A:B:C=100:99:100
Adhesion processing was carried out in the same manner as in the example except that the setting was made as follows.

As a result, no tension is applied to the film,
Adhesion errors and sparks occurred.

Comparative Example 2 The speed ratio of A:B:C is A:B:C=100:106:
Adhesion processing was carried out in the same manner as in the example except that the setting was 103.

As a result, too much tension is applied to the film,
The bonding overlap width became narrower, causing bonding errors, and the shrinkage of the film after bonding was large, resulting in insufficient length.

Comparative Example 4 Adhesion processing was carried out in the same manner as in the example except that the original fabric receiving rolls 5, 6 and 7, 8 were not driven and a normal receiving roll system was used.

As a result, the tension is large at first, and finally,
The tension became small, resulting in adhesion errors, and the shrinkage of the six films bonded together after bonding was different, resulting in insufficient length and flaring.

Comparative Example 5 Adhesion processing was carried out in the same manner as in Example except that a normal iron core type original fabric table was used without using the original fabric feeding table.

The results were similar to those of Comparative Example 4, and it took 20 minutes to replace the original fabric, which significantly reduced the efficiency of the bonding process.

Comparative Example 6 Adhesive processing was carried out in the same manner as in Example 1, except that the adhesive overlapping width detection part was not used.

As a result, during the bonding process, the overlapping width of the films changed and bonding errors and sparks occurred.

Comparative example 7 Without using soft start and soft stop,
Other than that, the bonding process was carried out in the same manner as in the example.

As a result, a sudden force was applied to the adhesive part of the film at the time of starting and stopping, causing sparks and adhesive errors.

[Effects of the Invention] According to the present invention, the receiving rolls 5, 6, 7, and 8 are driven at arbitrary speeds. Therefore, regardless of the size of the roll diameter of the film, by controlling the speed of the receiving rolls 5, 6, 7, and 8, the feeding speed of the film 11, 12 can be controlled, and as a result, the tension applied to the film can be controlled. can also be controlled.

Therefore, in the conventional method, it is possible to avoid the phenomenon that the tension of the fed films 20, 21 is large when the roll diameter of the original fabric is thick and heavy, and is small when the roll diameter of the original fabric is small and light.

In addition, the cross-joint bonding processing machine according to the present invention can accelerate and decelerate while keeping the speed ratio of the original fabric receiving roll, front and back transport rolls, and adhesive roll constant, so it is easy to start and stop the bonding process. It can be done smoothly. Soft start and soft stop are possible. That is, even when processing a long rolled material having a large diameter and heavy weight, it is possible to avoid adverse effects on the bonding process due to the inertia of the long rolled material due to sudden processing starts or processing stops.

Furthermore, the width joint adhesive processing machine according to the present invention allows the film adhesive overlapping width to be adjusted without requiring advanced technology.
Can be easily held constant.

As described above, by using the adhesive processing machine for long windings of the present invention, the efficiency of width joining work can be improved with less manpower without requiring special techniques during work, and the adhesive processing machine for long windings can be used. The operating rate is increased, and high-quality cross-jointing processing after bonding can be achieved, so it has great industrial utility value.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a long-wound synthetic resin film width joint adhesive processing machine of the present invention, FIG. The figure is a schematic front view of holding both ends of the original fabric and pressing it onto a receiving roll (paper core presser). 1... Long rolled raw film, 2... Paper core, 5,
6, 7, 8... Fabric receiving roll, 910... Fabric feeding table, 11, 12... Rolled long rolled fabric film, 13... Front transfer roll, 14... Rear transfer roll, 15 ...Adhesive lower roller, 16
...Adhesive upper roller, 17...Pinch roll,
18...Adhesive overlapping width detection section, 19, 20, 2
1...Film, 22...Adhesive roll part, 23...
... Adhesive roll portion movement motor, 24 ... Fabric feed-out trolley, 25... Rail, 26... Drive motor, 27... Fabric feed-out drive motor, 28
...Film feed-out table moving motor, 29...Film adhesive overlapping section, 30...Film position detection device, 31...Air cylinder, 32...Roll, 33...Paper core presser roll, 34...For slide rail.

Claims (1)

[Claims] 1. A plurality of long rolled raw films are rewound and sent out, and left and right end portions of the plurality of raw films with different lengths are overlapped and fed to a bonding machine to be bonded. In a synthetic resin film width splicing adhesion processing machine, a raw film delivery roll that rotates each of the plural rolls of raw film to be width spliced from the outer periphery;
It is equipped with two transfer rolls and an adhesive roll before and after the driving adhesive machine, and the speed of the original fabric delivery roll, each transfer roll, and the adhesive roll can be adjusted individually, and the overall speed is set between each. It can be adjusted while maintaining the same speed ratio, and it also detects the film position of the overlapped part so that the width of the overlapped part of the synthetic resin film to be bonded is kept constant, and automatically adjusts the film position and adhesive roll. A long synthetic resin film width splicing adhesive processing machine, which is characterized by being able to make fine adjustments in the width direction of the film. 2 The adhesive processing speed gradually accelerates as the adhesive processing starts, and when it reaches a predetermined speed, maintains that speed,
The long wound synthetic resin film width according to claim 1, which can be adjusted so that the speed gradually slows down from an arbitrary point before reaching a predetermined bonding length and stops when the predetermined bonding length is reached. Joint gluing processing machine.