JPS6221523A - Broad joint bond processing machine of synthetic resin film - Google Patents

Abstract

PURPOSE:To obtain a bond processing machine through which the flare is not generated on a film posterior to its broad joint, by making speeds of a pair of supporting rolls and a pair of transfer rolls, which carry a raw fabric to be jointed broad, adjustable respectively. CONSTITUTION:Supporting rolls 1, 2 and 3, 4 setting raw farics 7, 8 are driven at arbitrary speeds by a motor. A front transfer roll 10 and rear transfer roll 11 provided on the front and rear of a bonding machine body B are turned and driven at predetermined speeds independently respectively by the driving motor. In case of performance of broad joint of a polyvinyl chloride film by making use of the bond processing machine, it is desirable to provide a speed ratio of 0-5% between the supporting rolls 1, 2, 3, 4 and front transfer roll 10 and that of 0-2% between the front and rear transfer rolls 10, 11. With this construction, films 15, 16 sent out are turned into a state wherein appropriate tension is applied to them, the film comes between electrode rolls 12, 13 becomes free of creases and folding and turned into an appropriate state for bond processing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an adhesive processing machine for synthetic resin films such as agricultural vinyl chloride films (hereinafter referred to as vinyl chloride films) with good work efficiency. More specifically, the present invention relates to an adhesive processing machine suitable for splicing a plurality of rolled synthetic resin films. More specifically, the present invention relates to a bonding machine that has a short preparation time for bonding, eliminates the need for slack correction work during bonding, and has good workability after bonding and provides excellent bonding quality.

[Prior art 1] In recent years, farmers cultivating useful plants have widely adopted a method of promoting or suppressing cultivation of useful plants in greenhouses for the purpose of -L profitability.

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

This agricultural plastic is usually manufactured by calendar processing or extrusion processing, but there are limitations in terms of film thickness accuracy, quality such as appearance, and processing machine size. 6Ia. On the other hand, in recent years, houses have become larger, and house widths of 5.4 to 12 U+ or more are required.

For this reason, agricultural vinyl is usually joined with two to four step joints, and the bonding methods include high-frequency welding using a high-frequency sewing machine or 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 agricultural vinyl rolls used in this high-frequency sewing machine are usually sold in 1 roll of 100II;
Agricultural vinyl adhesive processing work is being carried out using 0Io rolls of raw material.

A typical bonding machine uses a pair of non-driven support rolls as a fabric feeding device, and the force for unwinding the fabric is provided by a drive roll placed at the rear of the high-frequency bonding machine body.

[Problem to be solved by the invention 1 Agricultural vinyl chloride resin film usually has a diameter of 51 to 75 mm.
It is sold as a roll-shaped product (hereinafter referred to as the original roll) around a core made of kraft paper with a diameter of 1 mm. The width of the commonly sold film is 135 to 40 cm (1 cm), and the length of the original film is approximately 100 l.

When using a raw fabric of such width and length as a covering material for a large house with a wide frontage, two or more raw fabrics (1-(
While unwinding the left and right ends of the two films (2 to 4 pieces), the left and right ends of the two films are overlapped and glued together using an adhesive method (such as a high-frequency sewing machine) to make a wider film (this The gluing operation is hereinafter referred to as width jointing.)

When splicing raw agricultural vinyl, there are the following problems.

(a) Agricultural film for covering greenhouses can be used in widths ranging from 5.4m to 1.5m by width splicing, depending on the width of the house and the towing distance.
211φ length is often 20 to 50 m. When the length of the original film is 100111, the overall length of the film is not very long, so it is frequently attached to and removed from the original film delivery roll, and each time the original film is replaced, it is necessary to prepare, transport (carry) and remove the original film. There are cumbersome operations such as setting on the delivery stand, positioning the adhesive part, and taking out the end of the roll of raw material, and during this time there are only 11 splices, which reduces the operating rate of the adhesive processing machine.

(b) When the remaining amount of the original film (remaining film length) does not reach the length required to perform the -th width splicing operation, it becomes what is called an end piece, resulting in loss. In addition, in an attempt to reduce film loss due to the edge lengths, collecting the edge lengths and gluing them in the length direction requires extra gluing work (mainly done by high-frequency welding). When a number of sheets are connected together, problems such as dirt adhesion to the bonded portion, reduction in light transmission, and increased risk of tearing from the bonded portion arise.

In order to eliminate the drawbacks of items (c) and h (items (a) and (b)), it is possible to increase the length of the original fabric.

However, when the length of the original fabric is increased and the roll is made thicker, if the original fabric is fed out using a conventionally used feed-out roll without driving force, the thickness of the roll may cause the bonding machine to There is a difference in the state of the film that is welded.

In other words, when the original film is thick and heavy at the beginning of unwinding, the unwound film will be under excessive braking due to its weight, and a large tension will be applied in the length direction of the film, causing tension. Stretched and stretched 1! (Hereinafter, this state will be referred to as state A).

Next, after rewinding the original film to a certain extent, when the thickness of the original film is medium, appropriate tension is applied to the fed film, and adhesive processing is performed to correct the walnuts, corrugated nails, etc. inherent in the original film. in good condition (hereinafter this condition will be referred to as condition?iB)
becomes.

In addition, when the roll thickness of the original film becomes thinner, there is almost no tension applied to the fed film, and walnuts, bends, wavy nails, etc. inherent in the original film are not corrected, resulting in a state unsuitable for adhesive processing (hereinafter referred to as this). The state will be referred to as state C).

In the actual bonding process, the raw fabric to be bonded is handled depending on the width of the target processed product, so the length and thickness of the raw fabric will vary, and the films in state A, state B, and state C will be different. will be patched together in various ways.

Unless the films in state B are bonded together, there will be inconveniences during the bonding process. When bonding objects with one side in state C, cracks or bends in the film may cause adhesion errors (parts that are not bonded), or wrinkles may occur in the film, causing sparks.

This situation is 1! In order to make IC film into the shape IB, there is a method in which a working tool presses the material with hands, feet, knees, etc., applies a brake, and applies tension to the film, but this is a cumbersome process.

Furthermore, even if one film to be bonded in this manner is in state B, if the other film is in state A, the film in state A will shrink after the adhesion process. Walnuts will occur in the film on the side of condition B, which was good.

(d) In order to eliminate the drawbacks in item (c) of item I, when using a shaku scroll for the original fabric, there is a method of changing the feeding method from surface unwinding to center unwinding.

In other words, prepare an iron core with bearings at both ends and whose outer diameter matches the inner diameter of the web being used.This iron core is inserted into the web, and the weight of the web is received by the bearings, and when the web is fed out. This method reduces the load on the film and eliminates the condition A, but this method involves the troublesome work of moving a heavy iron core into and out of the original fabric each time the original fabric is replaced.

Under such circumstances, the present inventors have developed a method that allows for easy replacement of the original film, eliminates the need for complicated operations such as inserting and removing heavy iron cores when exchanging the original film, and reduces the tension of the film during adhesive processing of the original film.
? We provide a bonding machine that does not require troublesome work such as braking for I4 adjustment, does not cause gluing errors during gluing, does not generate sparks due to excess film overlap, and does not cause flare (walnut) on the film after gluing. As a result of intensive studies, we have completed the present invention.

1. Means for Solving Problem 1 The gist of the present invention is to unwind and send out a plurality of roll-wound raw films, overlap and bond the different left and right ends of the plurality of raw films in the length direction. In the synthetic resin film width splicing gluing processing machine that feeds the synthetic resin film to the machine and adheres it, a pair of support rolls that support and drive the multiple rolls of material to be width spliced from the outer periphery, and a pair of support rolls that are driven independently before and after the splicing machine. A plurality of roll-wound synthetic resin film cross-joint adhesives, comprising: a front transfer roll and a rear transfer roll; each rotation speed of the support roll, front transfer roll, and rear transfer roll is adjustable; It exists in the processing machine.

The present invention will be explained in detail below.

Examples of the films to be bonded using the synthetic 0 (fat film cross-jointing and bonding processing machine) of the present invention include synthetic resin films such as soft vinyl chloride film, vinylidene chloride film, polyester film, and polyolefin film, as well as laminated films of these films. However, the following explanation uses agricultural vinyl as an example.

The main ingredients of raw agricultural vinyl are vinyl chloride resin and plasticizer.
As the ground rain components, heat stabilizers, surfactants, ultraviolet absorbers, lubricants, weather resistance agents, anti-coloring agents, pigments, etc. are mixed using ordinary blending techniques, such as mixing machines such as ebbori pump blenders and Henschel mixers. The mixture is added using a Banbury mixer, mill roll, etc., and rolled into a film with a thickness of 30 to 200μ by an extrusion molding method such as a calendar molding method or T-Guy inflation. Width 100-500, wound by wine goo
cm, quality 100u~300 (Lo).

If the film thickness is less than 0.03 uua, the strength will be insufficient and undesirable, and if it is thicker than 0.20 I6111, it will be inconvenient for film forming work and subsequent handling (including width splicing operation and spreading work in a house), etc. In addition, if the film width is less than 100 cIfl, it is undesirable because the number of width splices will increase, and if the film width is larger than 500 cm, it becomes difficult to store, transport, and handle the film, and it is not preferable that the film width is less than 100 cIfl. It will also be difficult to correct flares that occur.

Flare inherent in the raw material is that the soft vinyl chloride film that normally makes up the raw material for agricultural vinyl is flexible, and is caused by fluctuations in resin temperature during calendering, rolling rolls, etc. Due to various factors such as fluctuations in the roundness of the take-up roll, fluctuations in speed during take-up and winding, etc., there is some thickness fluctuation in both the length and width directions. Due to the unevenness of thickness due to this thickness fluctuation, undesirable phenomena such as the longitudinal ends of the film riding or arching (hereinafter referred to as 7 layers) occur. is hindering.

The adhesive processing machine of the present invention has a capacity of 100III to 3000+.

Although it is possible to use a roll of original fabric, it is preferable to use 1. < is 20
It is best to use a 0+11 roll”□500m roll of original fabric.

If the length of the original fabric is less than 20 + 1 m rolls, the frequency of attaching and removing the original fabric to the feeding roll will increase, and each time the original fabric is replaced, it will be necessary to transport (carry) the original fabric, set it on the feeding table, and attach the adhesive part. There are troublesome operations such as positioning and taking out the end of the roll of raw material, and it is not possible to perform width splicing during this time, which reduces the operating efficiency of the adhesive processing machine.

Further, if the length of the original fabric is more than 1500+n rolls, the weight becomes too heavy, making storage, transportation, and handling inconvenient.

When operating the apparatus of the present invention, it is preferable to set the speeds of the support roll and the front transfer roll at a speed ratio of 0 to 5% (preferably 1 to 2%).

That is, the speed of the support roll is FA, and the speed of the front transfer roll is B.
In this case, it is preferable that A:B=100:100-105.

If the speed ratio is less than 0%, adhesion errors and sparks occur due to walnuts, corrugations, bends, wrinkles, etc. of the film, making it difficult to achieve good adhesion.

If the speed ratio 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.

According to the method of the present invention, it is preferable to set the speed between the front transfer roll and the rear transfer roll with a speed ratio of 0 to 2%.

Further, when the speed of the front transfer roll is B and the speed of the rear transfer roll is C, it is preferable that B:C=100:100 to 102.

If the speed ratio is less than 0%, adhesion errors and sparks occur due to walnuts, corrugations, bends, wrinkles, etc. of the film, making it difficult to achieve good adhesion.

If the speed ratio exceeds 2%, 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.

Next, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a schematic side view of a synthetic resin film width-joining adhesive processing machine of the present invention. In the figure, 1.2.3.4 is a support roll, which is driven by a motor at an arbitrary speed.

In the figure, reference numeral 5.6 denotes a feeding table, which has wheels attached to its bottom and is provided so as to be able to reciprocate on rails 18 in the axial direction of the original fabric. The support roll 1.2 is placed on the delivery table 5,
The support roll 3.4 is attached to the delivery platform 6.

A front transfer roll 10 is provided along the front of the bonding machine main body B, and this roll 10 is rotatably supported via a bracket (not shown), and is connected to a reducer and a motor ( (both not shown), and is driven to rotate at a predetermined speed by the drive motor. A rear transfer roll 11 is provided in the bonding machine main body BF) f& section, and this rear transfer roll 11 is rotatably supported via a bracket (not shown), and is also rotatably supported via a power transmission mechanism (not shown). Continuous rock and motor (both not shown)
The drive motor rotates the drive motor at a predetermined speed.

In the figure, 7.8 is the original fabric, which is transported by supporting rolls 1.2 and
It is put on 4-1=.

In addition, 9 in the figure is an aspiration adjustment roll, which can be moved downward by end plates (not shown) installed on both sides of the main body of the gluing machine, and by adjusting the stroke of the air cylinder. Feel free to transfer the film 15.16 from the original roll to the front transfer roll 10! can be adjusted.

In addition, pinch rolls 17 are provided at several locations on the rear surface of the rear transfer roll 11 in the figure. This pinch roll 17 has a bar (not shown) installed between the end plates that are in V contact with each other on both sides of the adhesive machine body, and a plurality of arms 22 rotatably pivoted to the bar at appropriate intervals. It is rotatably supported by each end of the shaft.

In addition, B in the figure is the main body of the bonding machine, and this figure shows an aspect of the high-frequency bonding machine, and 12.13 is an electrode roll to which high-frequency power is supplied from the high-frequency bonding machine (not shown). Two layers of film (agricultural vinyl) 1 to which the face plate-L is transferred
4 is used to adhere the ends of the film (Jl Bi) 15 and 16 sent out from the original film.

FIG. 2 is a schematic front view of holding both ends of the original fabric.

This holder is composed of an air sill 23, a roll 26 that presses the inside of the paper core 25 of the original fabric 24, and a roll 28 that receives the thrust of the paper core end 27. It is provided so that it can move on the rail 29 in the direction of the original fabric axis.

An example of the operation mode of the processing machine of the present invention will be explained based on FIG. 1 and FIG. Set the original fabric 7. In the same manner, the original fabric 8 is set on the delivery support roll 3.4-l. Feeding table 5 or 6
is moved along the rail 18 in the direction of the web axis, until both ends of the web are 3
The positions of the moving platforms are determined so that they overlap by about c+++.

Insert the rolls 26 of the paper core holder into both ends of the paper core of the original roll 7.8 until the rolls 28 touch the ends of the paper core. Activate the air cylinder 23 and push the rolls 26 to the bottom of the paper core. guess

The drive motor for the support roll 1.2 is activated to rotate the support roll and pull out the bias portion (triangular portion at the end of the roll of the web) of the web 7. Move the aspiration roll 9, the electrode roll 13, and the vinyl roll to the -L section, and remove the film 1.
5 is passed through the top plate of the main body in this order over the front transfer roll 10, the electrode roll 12, and the upper part of the rear transfer roll 11. Stop the rotation of support roll 1.2. In the same manner, the film 16 is sent out from the original fabric 8, and the film 16 is passed through so that the end of the film 16 and the end of the film 15 overlap by about 3 cm. Stop rotation of support roll 3.4.

Set the speed of support roll 1.2.3.4 transfer roll 10.11 electrode roll 12.13. The aspiration roll 9, electrode roll 13, and vinyl roll 17 are moved to the lower part, and adhesion of the film is started.

[Advantageous Effects of the Invention 1] According to the present invention, the support rolls 1.2.3.4 are driven at arbitrary speeds. Therefore, regardless of the size of the winding diameter of the web, by controlling the speed of the support rolls 1.2.3.4, the feeding speed of the web roll 8 can be controlled.

Therefore, it is possible to avoid the conventional phenomenon in which the tension of the fed film 15, 16 is large when the roll diameter of the original film is large and small when the roll diameter of the original film is small.

In other words, the unwound film 15 when the winding diameter is too small
．． 16 tension was too low, it was not possible to correct flares and wrinkles such as walnuts, corrugated nails, and bends inherent in the original fabric, resulting in adhesion errors, sparks, etc. that occurred during welding between electrode rolls 12 and 13. troubles can be avoided.

In addition, it is possible to avoid adverse effects caused by shrinkage of the bonded film after adhesion when the roll diameter of the original film 7.8 is too thick and the tension of the unwound film 15.16 is too large. .

In particular, when the roll diameter of the original film 7.8 differs widely, when the film is fed out using a conventional support roll (the support roll is not rubbed), the fed film 15.1
It was difficult to match the tension of 6 and perform a good bonding process, but if you use a machine with a driven support roll like the bonding machine of the present invention, it can be done regardless of the size of the roll diameter of the original fabric. Since the original fabrics 7.8 can be sent out at the same speed and with the same tension, good adhesion can be achieved.

In the gluing machine of the present invention, not only the support rolls 1.2.3.4 are driven, but also the front and rear transfer rolls 10.11 which are brought into contact with the front and rear parts of the gluing machine are driven.

Also, front and rear transfer rolls 10.11 and support rolls 1.2
．． 3.4 can be adjusted to any speed.

When splicing agricultural and vegetable films using the adhesive processing machine according to the method of the present invention, the gap between the support roll 1.2.3.4 and the front transfer roll 10 is 0 to 5% (preferably 1 to 2%). It is preferable to set the speed using a speed ratio. Further, it is preferable to set the speed between the front transfer roll 10 and the rear transfer roll 11 with a speed ratio of 0 to 2%.

By driving with a higher speed ratio between each roll, the film 15.16 sent out is in a state where appropriate tension is applied, and the flares (walnuts, corrugated nails, bends, etc.) inherent in the original film are removed. is corrected, and the adhesive machine, in this case the film between the electrode rolls 12 and 13, is in a state suitable for adhesive processing without wrinkles or folds, and with no excessive tension. In other words, it is possible to process from the beginning of the roll to the end of the roll without having to touch the work tool, such as applying the brakes on the way.

Further, each motor that drives the support roll 1.2, the support roll 3.4, the front transfer roll 10, and the rear transfer roll 11 can be sped up and decelerated in conjunction with each other by independent/interlocked changeover switches. Therefore, once the support roll 1.
2. By setting the support roll 3.4, front transfer roll 10, and rear transfer roll 11 to appropriate speed ratios and switching to interlocking operation, speed increases and decelerations can be made without changing the speed ratio between each roll. Therefore, it is possible to perform a so-called soft start, in which the speed is slow at the start of operation and gradually increases to the normal operating speed once the web starts rotating. In other words, smooth film feeding becomes possible.

As described above, if the adhesive processing machine of the present invention is used, even when using the original fabric of the stick tape, there will be no gluing errors or sparks during adhesion, and the bonded film will not be damaged after the adhesive processing. It is also possible to perform a good adhesion process without causing sagging or the like.

In this way, if the adhesive processing machine of the present invention is used to perform adhesive processing on a tape roll, the frequency of attaching and detaching the original fabric to and from the roll will be reduced, and each time the original fabric is replaced, it will be possible to prepare and transport the original fabric. (Portability) - The number of troublesome operations such as setting on the feed table, positioning the adhesive part, and taking out the end of the roll of raw material is reduced, and the adhesive processing machine can be used continuously, improving the operation rate of the adhesive processing machine. , labor savings are also achieved.

If the adhesive processing machine of the present invention is used as shown in FIG. It's large.

[Usage Example 1] An example of using the adhesive processing machine of the present invention will be described below.

Usage example 1 Speed of support rolls 1.2 and 3.4 is A+o/min
, the speed of the front transfer roll 10 is Bi/16in, the speed of the rear transfer roll 11 is Coo/min, and the electrode roll 12
．． When the speed of 13 is CIII/Ioin, A:B:
I set the speed ratio setting so that C was 100:102:103.

Original agricultural vinyl film made by Mitsubishi Kasei Vinyl Co., Ltd. (0,1
011110 thick*270cn+nakamoto 600m roll),
It was transported by a transport holder 20 fixed to a crane 21 and set on support roll 1.2 and support roll 3.4-H. The feed table 5 or 6 is moved along the rail 1 in the direction of the fabric axis.
8"- was moved, and the position of the moving table was determined so that both ends of the original fabric overlapped by about 3 cans. The rolls 26 that also hold the paper cores were inserted into both ends (4 locations) of the paper cores of the two originals until the rolls 28 came into contact with the ends of the paper cores. Air Schilling-2
3 was activated, and the roll 26 was pressed against the bottom of the paper core. The drive motor for the support roll 1.2 was activated to rotate the support roll 1.2, and the bias portion (the triangular portion at the end of the roll of the web) of the web 7 was pulled out. (At this time, the aspiration roll 9, the electrode roll 13, and the vinyl roll had moved to the -1; position.) The film 15 was transferred to the front transfer roll 10,
After passing the electrode roll 12 and the L portion of the rear transfer roll 11 through the -1-face plate-1- of the main body in this order, the rotation of the support roll 1.2 was stopped. In the same manner, the film 16 was sent out from the original fabric 8, and after passing the film 16 through the film 16 so that the end of the film 16 overlapped with the end of the film 15 by about 3 cm, the rotation of the support roll 3.4 was stopped. Support rolls 1.2 and 3.4, transfer rolls 10, 11, electrode roll 12.1
The operation switch for each drive motor in No. 3 was changed from independent to interlocked. The speed of the support roll 1.2 was set to 11/min, the aspiration roll 9, the electrode roll 13, and the vinyl roll 17 were moved to the lower part, and adhesion of the film was started. The speed of the delivery roll is 12IIl/a+ in 10 seconds.
The speed was increased to "in", and thereafter the adhesive processing was continued until the original fabric was used up. As a result, good adhesion was achieved with no gluing mistakes or sparks, and no flare such as walnuts on the film after adhesion.

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

As a result, tension was not applied to the film, resulting in adhesion errors and sparks.

(Comparative Example 2) The speed setting ratio of A:B:C is A:B:C=100:i0
Adhesion processing was carried out in the same manner as in the example except that the setting was 6:103.

As a result, too much tension was applied to the film, the bonding allowance was reduced, bonding errors occurred, and the film shrinkage after bonding was large, resulting in an insufficient length.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the synthetic resin film width-joining adhesive processing machine of the present invention, and FIG. 2 is a schematic front view of a holder for both ends of the original fabric. 1.2.3.4... Support roll, 5, 6... Feeding table, 7, 8... Original fabric, 9... Ambition roll, 10.
・・Front roll, 11・・Rear roll, 12.13・
・・Electrode roll, B is the adhesive machine body, 14.15.16・
・・Film, 17・ψ・Vinch roll, 18・Rail, 19・Wheel, 20◆・・Transportation tool, 21φφ
・Crane, 22...Arm, 23...Air silling-124...Original fabric, 25...Paper core, 26...
Roll, 27... Paper core end, 28... Roll, 29
- Slide rail patent applicant Mitsubishi Kasei Vinyl Co., Ltd. Representative Patent attorney Hase - (1 other person)

Claims (1)

[Scope of Claims] 1. A synthetic resin film width in which a plurality of roll-wound original films are fed out by unwinding, and the left and right ends of the plurality of original films are overlapped and fed to a bonding machine to be bonded. A splicing gluing machine is equipped with a pair of support rolls that support and drive the plurality of rolls to be spliced from the outer periphery, and a front transfer roll and a rear transfer roll that are independently driven before and after the gluing machine. A plurality of roll-wound synthetic resin film width splicing adhesive processing machine 2, characterized in that the rotational speed of each of the support roll, the front transfer roll, and the rear transfer roll is adjustable.The adhesive machine is a high-frequency adhesive machine. A synthetic resin film width splicing machine according to claim 1