KR20120111421A

KR20120111421A - Sealing machine for films

Info

Publication number: KR20120111421A
Application number: KR1020110029875A
Authority: KR
Inventors: 송극렬; 정경호; 황용구
Original assignee: 주식회사 이에스디웍
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2012-10-10

Abstract

The present invention relates to a film bonding apparatus, comprising: a film bonding apparatus for bonding a film unwound from a film original fabric bundle to each other, comprising: a heater bonded by heating the film in a pressurized state; A first transporting device disposed between the film fabric bundle and the heater, and configured to transfer the film released from the film fabric bundle to the heater; And a second transfer device for pulling and conveying the film bonded by the heater, wherein the first transfer device and the second transfer device are controlled to compensate for the length of the film extended by the heater. do.
According to the present invention, by including the first transfer device and the second transfer device that is controlled to compensate for the length of the film lengthened by the heater, the film is kept in a taut state without sagging down, There is an effect that film bonding and cutting can be made.

Description

Film bonding device. {Sealing Machine for films.}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film bonding apparatus, and more particularly, to a film bonding apparatus in which film bonding and cutting at an accurate position can be made by compensating for an extended film length by a heater.

An example of a film bonding apparatus 1 in which a film fabric made of synthetic resin is bonded to each other by bonding two layers of films unwound from a roll of film fabric wound in a roll form is shown in FIG. 1.

The said film bonding apparatus 1 is the heater 2 joined together by heating in the state which pressed the two-layer film F unwound from the film original fabric bundle R, and the film bonded by the said heater 2 ( The cutter 3 which cools F), the cutter 4 which cuts the film F cooled by the said cooler 3, and the film F cooled by the said cooler 3 are pulled, and the said cutter The first transfer device 5 to be transferred to (4), and is disposed between the film bundle bundle (R) and the heater (2) and interlocked with the first transfer device (5) the first transfer device (5) And a second transfer device 8 for transferring the film F at the same feed rate as the above), wherein the heater 2 is positioned above the film F to generate heat, and the film On the lower side of the said film F and the 1st member 6 which can move a position between the spaced apart position spaced apart from (F), and the bonding position which contact | connects the said film F, Value and, and a second member 7 which is disposed to face the first member (6).

On the other hand, the film fabric bundle (R) may be prepared in various forms, after cutting one side of the tubular film (F) along the length direction, and wound in a roll (roll), one side is an open opening ( P) is formed and the other side is folded along the bending line Q to obtain a film fabric bundle R in a form in which two layers of film F are opposed to each other, and such a film fabric bundle R is used. Thus, as shown in FIG. 2, when the bonding is performed at regular intervals along the longitudinal direction of the film F, the bag 9 as shown in FIG. 3 may be manufactured.

The process of manufacturing the bag 9 using the conventional film bonding apparatus 1 will now be described in detail. When the two layers of film F released from the film fabric bundle R are moved to the bonding position by the first member 6 of the heater 2, the film F and the second member 7 are pressed. , As shown in FIG. 2, a junction part B, which is a portion where two layers of film F are melted and joined, is formed, and the heated junction part B is formed by the first transfer device 5. After being transferred to (3) and cooled, the cooled joint portion (B) is transferred to the cutter (4) by the first transfer device (5) and then cut based on the cutting line (C), thereby Openings (P) are formed, the lower side has a bend line (Q) and both ends of the bag (9) having a junction (B) can be produced, repeating this process a large amount of bags (9) in succession It can manufacture.

However, in the conventional film bonding apparatus 1, since only the 1st member 6 of the said heater 2 can generate | occur | produce heat, the film bonding apparatus 1 which contacted the film F of one layer of two films F was made. In order to sufficiently transfer heat from the first member 6 to the remaining layer of film F, there is a problem in that heat pressurization is required for a long time, and the material of the film F is melted like polyethylene (PE). In the case of low, there is a problem that the film (F) can be broken due to a long time heating and pressing. When the film F is abnormally broken in this way, the work is interrupted and the preparation time for reactivation of the film bonding apparatus 1 is increased, thereby decreasing the productivity of the bag 9.

In addition, in the conventional film bonding apparatus 1, as the length of the film F extended by the heater 2 gradually accumulates, between the first transfer apparatus 5 and the second transfer apparatus 8. There is a problem that the existing film (F) does not maintain a taut state and sags down, and due to this sag, bonding and cutting at the correct position are not possible.

The present invention has been made to solve the above problems, and an object thereof is to provide a film bonding apparatus having an improved structure so that film bonding and cutting at an accurate position can be made by compensating for an extended film length by the heater. .

In order to achieve the above object, the film bonding apparatus according to the present invention comprises: a film bonding apparatus for bonding a film unwound from a film original fabric bundle to each other, comprising: a heater bonded by heating the film in a pressurized state; A first transporting device disposed between the film fabric bundle and the heater, and configured to transfer the film released from the film fabric bundle to the heater; And a second transfer device for pulling and conveying the film bonded by the heater, wherein the first transfer device and the second transfer device are controlled to compensate for the length of the film extended by the heater. do.

Here, the first transfer device and the second transfer device are preferably driven by separate servo motors, respectively.

Here, the heater may be located on one side of the film to generate heat, the first member capable of moving between the separation position spaced apart from the film and the bonding position in contact with the film; A second member positioned on the other side of the film and disposed to face the first member, wherein the first member moves to the bonding position to press the film and the second member to press the film; It is preferable that the joining is performed.

Here, it is preferable that the said 2nd member can generate heat.

Here, it is preferable that the said 2nd member is positionally movable between the spaced position spaced apart from the said film, and the bonding position which contact | connects the said film.

Here, it is preferable to provide the cooler which cools the film bonded by the said heater, and the cutter which cut | disconnects the film cooled by the said cooler.

According to the present invention, by including the first transfer device and the second transfer device that is controlled to compensate for the length of the film lengthened by the heater, the film is kept in a taut state without sagging down in the correct position There is an effect that film bonding and cutting can be made.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the structure of the conventional film bonding apparatus.
FIG. 2 is a view showing a state in which bonding is performed at regular intervals along the longitudinal direction of the film using the film bonding apparatus shown in FIG. 1.
3 is a view showing an envelope manufactured by cutting the film shown in FIG.
It is a figure for demonstrating the structure of the film bonding apparatus which is one Example of this invention.
5 is a view showing a state in which the heater of the film bonding apparatus shown in FIG. 4 is in a spaced position.
6 is a view showing a state in which the heater of the film bonding apparatus shown in FIG. 4 is in the bonding position.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a view for explaining the configuration of a film bonding apparatus according to an embodiment of the present invention, Figure 5 is a view showing a state in which the heater of the film bonding apparatus shown in FIG. 6 is a view showing a state in which the heater of the film bonding apparatus shown in FIG. 4 is in the bonding position.

4 to 6, the film bonding apparatus 100 according to the preferred embodiment of the present invention is a device for bonding the film F unwound from the film bundle bundle R to each other, and is bonded to the heater 10. And a first transfer device 20, a cutter 30, a second transfer device 40, and a cooler 50.

The heater 10 is a device that is joined by heating in a pressurized state of the film F. The heater 10 is disposed between the first transfer device 20 and the cooler 50. And a second member 12.

The first member 11 is a rod-shaped member which is located above the film F and generates heat, and has a heating wire (not shown) inside thereof to convert electricity into heat.

The said 1st member 11 is provided so that a position movement is possible between the spaced position spaced apart from the said film F, and the bonding position which contact | connects the said film F. As shown in FIG. That is, the first member 11 moves to the separation position by moving up from the joining position, and moves to the joining position by descending from the separation position.

The second member 12 is a rod-like member capable of generating heat similarly to the first member 11, and is positioned below the film F and is positioned at the bonding position. ) And the first member 11 to be in contact with each other in a pressurized state.

Like the said 1st member 11, the said 2nd member 12 is provided so that a position movement is possible between the separation position spaced apart from the said film F, and the bonding position which contacts the said film F. As shown in FIG. That is, the second member 12 moves to the separation position by descending from the joining position, and moves to the joining position by raising from the separation position.

Here, the first member 11 and the second member 12 are simultaneously moved in position, and when the first member 11 is moved to the spaced position, the second member 12 is also moved to the spaced position. When the first member 11 moves to the joining position, the second member 12 also moves to the joining position. Further, the first member 11 in the joining position and the second member 12 in the joining position are provided to be in contact with each other in a pressurized state.

The first transfer device 20 is a device for transferring the film (F) released from the film bundle bundle (R) to supply to the heater (10), the film bundle bundle (R) and the heater 10 It is arrange | positioned in between, and is provided with the 1st servo motor 21 and the 1st roller 22. As shown in FIG.

The first servo motor 21 is a generally known servomotor, and is a motor capable of precisely controlling a rotation angle or a rotation speed by a controller (not shown). In this embodiment, an electric servomotor is used as the first servomotor 21.

The first roller 22 is a pair of rotating members disposed above and below the film F, and is a member for transferring the film F in a manner of rotating in contact with both surfaces of the film F. FIG. . The first roller 22 is rotated by the driving force of the first servo motor 21.

The cooler 50 is a device for cooling the bonding portion B of the film F bonded by the heater 10, and is disposed between the heater 10 and the second transfer device 40, and an upper portion thereof. The cooling member 51 and the lower cooling member 52 are provided.

The upper cooling member 51 is a rod-shaped member disposed above the film F, and a conduit (not shown) through which cool cooling water flows is formed therein. This upper cooling member 51 is provided so that a position movement is possible between the spaced position spaced apart from the said film F, and the bonding position which contact | connects the said film F. As shown in FIG. That is, the upper cooling member 51 moves to the separation position by moving up from the joining position, and moves to the joining position by descending from the separation position.

The lower cooling member 52 is a rod-shaped member disposed below the film F, and has a conduit (not shown) through which cool coolant flows inside the same as the upper cooling member 51. The lower cooling member 52 faces the upper cooling member 51 such that the lower cooling member 52 is in contact with the upper cooling member 51 at the bonding position in a pressurized state.

The cutter 30 is a device for cutting the film F cooled by the cooler 50, and includes a moving blade 31 and a fixed blade 32.

The said moving blade 31 is a blade arrange | positioned above the said film F, and is provided so that a position movement is possible between the spaced apart position spaced apart from the said film F, and the bonding position which contact | connects the said film F. have.

The said fixed blade 32 is a knife blade arrange | positioned under the said film F, and faces the said moving blade 31 so that it may engage with the moving blade 31 in the said bonding position.

The second transfer device 40 is a device that pulls the film F bonded by the heater 10 and transfers the film F to the cutter 30, and is disposed between the cooler 50 and the cutter 30. And a second servo motor 41 and a second roller 42.

The second servo motor 41 is a generally known servomotor, and is a motor capable of precisely controlling a rotation angle, a rotation speed, and the like by a controller (not shown). In this embodiment, an electric servomotor similar to the first servomotor 21 is used as the second servomotor 41.

The second roller 42 is a pair of rotary members disposed above and below the film F, and is a member for transferring the film F in a manner of rotating in contact with both surfaces of the film F. . The second roller 42 is rotated by the driving force of the second servo motor 41.

Meanwhile, the first transfer device 20 and the second transfer device 40 are controlled to compensate for the length of the film F extended by the heater 10. For example, in the case of manufacturing an envelope having a width of the envelope 9 shown in FIG. 3, that is, a length of 500 mm between the bonding portions B at both ends, if the length of the film F extended by the heater 10 is 5 mm. In order to make one envelope 9, the first servo motor 21 is controlled so that the length of the film F transferred by the first transfer device 20 is 495 mm, and the second transfer device The second servo motor 41 is controlled so that the length of the film F transferred by the 40 is 500 mm.

Below, an example of the method of manufacturing the bag 9 of 500 mm in width using the film bonding apparatus 100 of the above-mentioned structure is demonstrated. It is assumed here that the length of the film F extended by the heater 10 is 5 mm.

First, the film F is mounted on the film bonding apparatus 100 such that the film F released from the film fabric bundle R passes through the cutter 30 via the first transfer device 20. After that, the heater 10 is sufficiently preheated and the cooler 50 is also sufficiently cooled.

After the preheating and precooling of the heater 10 and the cooler 50 is completed, the film bonding apparatus 100 is operated, and the first and second transfer apparatuses 20 and 40 are operated by the first transfer apparatus 20 and the second transfer apparatus 40. The film F starts to be conveyed.

After the transfer of the film F starts, when the portion of the film F on which the bonding portion B is to reach the heater 10, the film F is stopped, the film F In this stopped state, the first member 11 and the second member 12 of the heater 10 are respectively moved to the joining position, pressurized with each other for a predetermined time, and then moved to the spaced apart position. Each of the films F is heated in a pressurized state for a predetermined time. Thus pressurized and heated two-layer film (F) is melted and bonded to each other, as shown in Figure 3, the bonding portion (B) is formed on the film (F). At this time, the bonding portion B of the film F is increased by 5 mm than the bonding portion B before heating by the heater 10.

After the junction part B is formed in the said film F, the said film F is conveyed by the said 1st conveyance apparatus 20 and the 2nd conveyance apparatus 40, and the said junction part B is the said cooler. When it reaches 50, the said film F will stop again. At this time, the feed length of the second transfer device 40 is 5 mm longer than the transfer length of the first transfer device 20 so as to compensate for the length of the film F extended by the heater 10. Therefore, the film F positioned between the first transfer device 20 and the second transfer device 40 may be maintained in a taut state without falling down. Here, the method of lengthening the conveying length of the second conveying device 40 to 5mm longer than the conveying length of the first conveying device 20, the second conveying device ( After transferring the film F by 5 mm using only 40), the first transfer device 20 and the second transfer device 40 may be operated for the same time under the same transfer speed.

Subsequently, in the state where the film F is stopped, the upper cooling member 51 of the cooler 50 in the spaced position is lowered to the bonding position to press the lower cooling member 52 to press the bonding portion B. ) Is cooled for a predetermined time and then moved back to the spaced position. By doing so, the junction portion B, which was in a high temperature state by the heater 10, is cooled.

Subsequently, after the bonding portion B is cooled, the film F is transferred by the first transfer device 20 and the second transfer device 40, and the bonding portion B is the cutter 30. When it reaches, the film F is stopped again. At this time, the transfer length of the second transfer device 40 is the same as the transfer length of the first transfer device 20. Subsequently, in the state where the film F is stopped, the moving blade 31 of the cutter 30 is lowered to engage the fixed blade 32 so that the bonding portion B of the film F is cut. It is cut based on (C).

If the above-described process is repeated, one bag 9 is manufactured by one cutting except at the time of initial driving, so that the continuous bag 9 can be manufactured.

The film bonding apparatus 100 of the above-mentioned structure is equipped with the said 1st conveyance apparatus 20 and the 2nd conveyance apparatus 40 controlled so that the length of the film F extended by the said heater 10 can be compensated. Since the film F positioned between the first transfer device 20 and the second transfer device 40 can be maintained in a taut state without falling down, the film at the correct position can be obtained. There is an advantage that joining and cutting can be made.

And since the said film bonding apparatus 100 is equipped with the 1st member 11 and the 2nd member 12 which the said heater 10 can generate heat, respectively, the heating element which can generate heat. Unlike the conventional film bonding apparatus 1 having only the first member 6 as the two-layer film F can be heated by the first member 11 and the second member 12, respectively. In this case, the heating of the film F by the heater 10 may be completed quickly. Therefore, unlike the conventional film bonding apparatus 1 that requires a relatively long heating time, the film bonding apparatus 100 is unlikely to cause the film F to break due to excessive heating, and thus, a rapid film. There is an advantage that the bonding of (F) is possible.

In addition, the film bonding apparatus 100 includes the first member 11 and the second member 12 which are movable in the position between the bonding position and the separation position, and thus the film F ) Is not required, by placing the first member 11 and the second member 12 in the spaced position, it is possible to prevent the accidental break of the film (F) due to unintentional heating There is an advantage.

In addition, since the first transfer device 20 and the second transfer device 40 are driven by separate servomotors 21 and 41, respectively, the film bonding apparatus 100 may operate the first transfer device 20. ) And the second transfer device 40 has the advantage that can be precisely controlled the feeding distance and the feeding speed.

In the present embodiment, a method of lengthening the conveying length of the second conveying apparatus 40 by 5 mm longer than the conveying length of the first conveying apparatus 20, wherein the second conveying apparatus 20 is stopped. By only operating the feeder 40 first, a method of increasing the operating time of the second feeder 40 is used. However, the feed rate of the second feeder 40 is determined by the first feeder 20. Of course, it is also possible to operate for the same amount of time while setting faster than the feed rate of.

The technical scope of the present invention is not limited to the contents described in the above embodiments, and the equivalent structure modified or changed by those skilled in the art can be applied to the technical It is clear that the present invention does not depart from the scope of thought.

[Description of Reference Numerals]
100: film bonding device 10: heater
11: first member 12: second member
20: first transfer device 21: the first servo motor
22: first roller 30: cutter
31: moving blade 32: fixed blade
40: second transfer device 41: second servo motor
42: second roller 50: cooler
51: upper cooling member 52: lower cooling member
R: film fabric bundle F: film
C: cutting line B: joint
P: opening Q: bending line
9: envelope

Claims

In the film bonding apparatus which abuts the film unwound from a film original fabric bundle, and bonds together,
A heater bonded by heating the film in a pressurized state;
A first transporting device disposed between the film fabric bundle and the heater, and configured to transfer the film released from the film fabric bundle to the heater;
A second transfer device for pulling and transporting the film bonded by the heater;
Equipped with
And the first transfer device and the second transfer device are controlled to compensate for the length of the film lengthened by the heater.

The method of claim 1,
And said first transfer device and said second transfer device are driven by separate servo motors, respectively.

The method of claim 1,
The heater,
A first member positioned on one side of the film to generate heat, the first member being movable between a separation position spaced apart from the film and a bonding position contacting the film;
And a second member positioned on the other side of the film and disposed to face the first member.
Bonding of the film is performed by moving the first member to the bonding position to press the film and the second member.

The method of claim 3, wherein
The said 2nd member can generate heat, The film bonding apparatus characterized by the above-mentioned.

The method of claim 4, wherein
And the second member is capable of positional movement between a separation position spaced apart from the film and a bonding position in contact with the film.

The method of claim 1,
And a cooler for cooling the film bonded by the heater, and a cutter for cutting the film cooled by the cooler.