JP2001163493A - Film transport device and continuous processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film transport deice and continuous processor having a chain and a guide rail capable of preventing abrasion of guide rails to lengthen the life thereof and preventing generation of dust. SOLUTION: In this film transport device of continuous processing equipment for transporting a continuously produced film with both side end parts fixed, and simultaneously continuously conducting after treatment such as drying and heat treatment for the film, the chains are superposed in plural layers, and the chains are supported by plural guide rails.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a resin film,
Metal film such as aluminum foil, such as a laminated film, a continuous processing apparatus that continuously performs post-treatment such as drying or heat treatment on a continuously manufactured film, and
In a continuous processing apparatus, the present invention relates to a transport device including an endless chain for transporting a film and a guide rail thereof.

[0002]

2. Description of the Related Art Films such as a resin film, a metal film such as an aluminum foil, and a laminated film are continuously manufactured and then subjected to a post-treatment such as drying or heat treatment to obtain a product. When the film to be subjected to the post-processing is continuously conveyed, the film is fixed by a fixing device attached to a pair of right and left chains located below the end of the film and connected to an endless guided by a rail. The film is transported so that the film is not sagged while holding both side edges.

A film transport device having such an endless chain or a guide rail is disclosed in Japanese Patent Application Laid-Open No. 2-2434.
No. 50, for example. As shown in FIGS. 7 and 8, this film transport device has a pin sheet having a large number of pins protrudingly fixed to an endless chain.
This endless chain is guided by a guide rail to form a transport device.

FIG. 7 is an enlarged perspective view of a part of the film transport device 110, and FIG. 8 is a schematic cross-sectional view taken along a plane B in FIG. The film 112 is fixed by film fixing pins 120 which are film fixing means. The film fixing means is fixed to the stage 122,
The stage 122 is connected to a chain 126 by a link 124.
Linked to the movement of The above-mentioned chain 124 is guided by one lower guide rail 130, and the chain 2
4 is a rotating roll 128,
By rotating along the inner wall of the chain 0, the chain 24 has a mechanism that moves smoothly in the guide rail.
Note that the film fixing pins 120 project from the surface of the pin sheet 132, and the pin sheet 132 is fixed to the stage 122.

The above-mentioned chain 124 and guide rail 13
In the film transport device 110 composed of the film 112, the film 112 is moved through the transport device after both side edges of the film 112 are fixed by the film fixing pins 120 provided on the pin sheet 132. And a post-treatment such as a heat treatment step.

[0006]

However, when the film 112 contracts due to these processes, the pair of chains 124 of the film transport device 110 are strongly pulled from each other via the stage 122 to which the film fixing pins 120 are fixed. Can be With this force, the chain 124
Contacts the side wall of the guide rail 130 in an obliquely inclined state. Due to the inclination of the chain 124, the chain 1
The rotating roll 128, which is a component of 24, comes into contact with the inner wall of the guide rail 130. For this,
The smooth movement between the guide rail 130 and the rotating roll 128 is impaired, the rotation of the rotating roll 128 is deteriorated, and the rotating roll 128 is worn. Therefore, there has been a problem that the rotating roll 128 and the guide rail 130 are unevenly worn or the wear is accelerated, and the frequency of replacing the guide rail 130 and the chain 124 is increased. For this reason, the cost was increased. Further, there has been a problem that dust generated by abrasion adheres to the film and causes defects of the film.

The inventor of the present invention has conducted intensive studies in order to solve such a problem, and as a result, has arrived at the present invention.

[0008]

The gist of the film conveying apparatus of the present invention is a conveying apparatus in a continuous processing step of a continuously manufactured film, wherein at least both end portions of the film are fixed. And a driving device for driving the conveyor, the conveyor comprising a film fixing means, a stage connected to the film fixing means, and an endless connecting to the stage. It consists of a chain and a guide rail that guides the chain, and the guide rail is provided so as to sandwich the front and back of the stage.

[0009] Further, the chain and the guide rail may be installed so as to sandwich the front and back of the stage.

[0010] Further, the guide rail may be installed so as to sandwich the front and back of the stage by incorporating a chain in which a plurality of links are formed in layers on the front and back of the stage.

Further, the film fixing means may comprise a film fixing pin and a pin sheet on which the film fixing pin protrudes.

Alternatively, the film fixing means may include a film fixing clip.

Further, the gist of the continuous processing apparatus according to the present invention is that it is a continuous processing apparatus in a continuous film manufacturing process, and includes at least a heat treatment means and any one of the above-described film transport apparatuses.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a film transport apparatus and a continuous processing apparatus according to the present invention will be described in detail with reference to the drawings.

A film transporting apparatus according to the present invention is a film transporting apparatus in a continuous processing apparatus for continuously performing post-processing such as drying and heat treatment while moving both sides of a film fixed by fixing means. Device. Specifically, FIG. 1 shows an example of an embodiment according to the present invention.
This will be described with reference to FIGS.

As shown in the basic configuration diagram of the film transport device in FIG. 3, the film transport device 10 includes a conveyor 11, a film fixing device 14, a film peeling device 16, and a driving device for driving the conveyor 11 (shown in FIG. 3). ). In addition, the conveyor 11
As shown in FIG. 1, a pair of chains 20 endlessly connected to each other and a film fixing member 22
And a guide rail 24 for guiding the chain 20. The film 12 continuously manufactured and guided to the film transport device 10 is moved by the film fixing device 14.
Both ends are fixed to a film fixing member 22 connected to the chain 20. Further, the fixing member 22 is fixed to the chain 20 and interlocks with the movement of the chain. Therefore, the film 12 is conveyed by driving the chain 12 while applying a constant tension in the film width direction and the traveling direction by adjusting the guide rail 24 to a constant width. During the transport, the fixed film 12 is subjected to a post-treatment such as a drying step and a heat treatment step. The film 12 that has been subjected to the post-processing is detached from the transport device 10 by the fixing device releasing device 16 and is transferred to the next step.

In FIG. 1, the film fixing member 22
Is composed of a stage 26 and a film fixing pin 28 installed on the stage 26. Further, the film fixing pins 28 are protruded from the pin sheet 30.

The chain 20 is driven by a driving device and is for transporting the film while fixing the film between the film fixing device and the film peeling device. Take the configuration. After the film is peeled off by the film peeling device, the film is moved to the place where the film fixing device is installed. The chain 20 of the transport device according to the present invention includes a stage 26
The upper and lower sides are configured as two-layer chains 20a and 20b. A stage for installing a film fixing device is fixed between these two-layer chains, and the stage has a structure that interlocks with the movement of the chain.
The chain 20 is generally formed by connecting a number of links 32, and each link 32 includes a rotating roll 34,
It is incorporated by a shaft member (not shown).
The rotating roll 34 and each link 32 are connected by a slide formed by a shaft member. As shown in FIG. 2, the shaft member penetrates the link 32 and the rotating roll 34 constituting the lower chain 20a, and further passes through the stage 26 to form the link 32 of the upper chain 20b and the rotating roll 34.
To form a smooth segment. This is because the movement of the chains 20a and 20b formed of the upper and lower layers is integrated, and the function of moving the film including the stage can be smoothly performed. In addition, these shapes are not limited to the shapes shown in FIGS.
The rotating roll 34 may have a cylindrical shape, a drum shape, a conical shape, or the like. In addition, the link 32 is not particularly limited as long as it has a structure that forms a smooth joint and a shape that can operate without any trouble along the curvature of the turning point of the chain. In addition, it is a material that can withstand impact fatigue, compression, abrasion, etc.
It is preferable to have characteristics according to the application.

As shown in FIGS. 1 and 2, the guide rail 24 of the film transport device is composed of upper and lower guide rails 24a and 24b of the stage. Each guide rail has a built-in chain, and the lower chain 2
0a is guided by a lower guide rail 24a, and the upper chain 20b is guided by an upper guide rail 24b.
Guided by The guide rails 24
When the chains 20a and 20b of the layer run by the driving device, the running position of the chain that conveys the film is determined while adjusting the film width of the film fixed to the conveying device according to the present invention to a desired value. Play a role.

The inner width of the guide rail 24 is determined in relation to the diameter of the rotating roll 34 so that the rotating roll 34 of the chain can move smoothly while rotating on the inner wall. In addition, guide rails 24 to which each chain contacts
A roller 40 may be appropriately incorporated on the bottom side so that the chain 20 moves smoothly. The adjustment of the film width can be basically changed by adjusting the distance between a pair of guide rails 24 installed on both sides of the film. For example, a female screw 42 is formed on a protrusion protruding below the lower guide rail 24a in a horizontal direction perpendicular to the feed direction of the chain. The guide rail 24 is configured to be rotatably attached to the fixing device provided, and the guide rail 24 is moved by the rotation of the female screw, so that the film width can be adjusted.

The stage plays a role of supporting film fixing means for fixing the end of the film and a role of interlocking the film fixing means with the movement of the chain. The stage is preferably installed in combination with each link one by one in order to have a film fixing means and smoothly interlock with the movement of the chain. As shown in FIG. 2, the stage in the film transport device according to the present invention is fixed by being sandwiched between upper and lower two-layer chains. More specifically, the shaft member is penetrated in the order of the lower layer link 32, the rotating roll 34, the link 32, the stage 26, the upper layer link 32, the rotating roll 34, and the link 32, and these are integrally fixed. Further, the shaft member may be penetrated and fixed to the stage integrally formed with the upper layer link and / or the lower layer link, the rotating roll, and the link on the bottom side of the upper and lower guide rails.

Although the surface of the stage is flat in FIGS. 1 and 2, it may be formed with a step. Further, the stage and the pin sheet as shown in FIGS. 1 and 2 may be integrally formed. Furthermore, the shape of the surface of the stage including the film fixing means is not particularly limited as long as it plays the above role.

As means for fixing the film,
The present invention is not limited to pins, and may be fixed with clips. For example, the film fixing means in the film transport device shown in FIGS.
And a stage 38 on which the film 12 is mounted, and the film is sandwiched between the lower portion of the film and the stage 38 to fix the film. In the mode shown in the perspective view of FIG. 4, the film fixing clip 36 has a structure in which the portion sandwiching the film is opened and closed by pushing and pulling a portion projecting above the fulcrum 39. FIG. 5 is a sectional view of the embodiment of FIG. Further, a spring may be built in the fulcrum portion of the clip. Further, the holding portion of the film may be opened and closed up and down. Further, a portion corresponding to the film surface of the clip may have irregularities.

FIG. 6 is a sectional view showing another embodiment of the transfer apparatus according to the present invention. In FIG. 6, the conveyor 11 of the conveyor according to the present invention includes a lower guide rail 24a, an upper guide rail 24b, and a lower chain 2
0a, film fixing means, and a rotating body 50. In this embodiment, the operation and configuration are the same as those in the above embodiment, except for the rotating body 50. The rotating body of this embodiment is built in the upper guide rail 40b. The rotating body 50 passes through the shaft member together with the lower chain 20a and the stage 26, and moves integrally with the movement of the lower chain 20a. In conjunction with the movement of the lower chain, the rotating body 50 is moved to the upper guide rail 24b.
Rotates along the inner wall of the. The inner width of the upper guide rail 24b of the rotator 50 is determined by the upper guide rail 24b so that movement in the horizontal direction is restricted.
Accordingly, it is possible to prevent the upper portion of the chain 20a from being inclined in accordance with the horizontal movement of the stage caused by the expansion and contraction of the film 12. One rotating body 50 is provided for each shaft member that passes through the link 32 of the lower chain 20a. In this aspect, the film fixing means may be the above-mentioned clip.

The film transport device according to the present invention is applicable to any film having self-supporting properties.
For example, the present invention can be applied to a laminated film in which a resin film, aluminum foil, paper, resin, and the like are laminated and coated. As the resin film, for example, various resin films such as a polyvinyl chloride film, a polyethylene film, and a polyimide film are also suitable. Among these, as for the polyimide film, the transport device according to the present invention can be suitably applied to a film having a self-supporting property in which a precursor of the polyimide film is converted into polyimide by dehydration or deorganization solvent.

Here, taking a polyimide film as an example,
An example of use of the transport device according to the present invention will be described. First, a polyimide precursor is formed and extruded into a film on a casting drum or an endless belt. The precursor film is dehydrated or deorganized and converted into a polyimide to produce a polyimide film having sufficient strength to have self-supporting properties. Next, the polyimide film is peeled from the drum or belt, and is subjected to necessary processing such as drying and heat treatment while being conveyed by the film conveying device according to the present invention.

Next, a continuous processing apparatus for performing post-processing using the film transport apparatus according to the present invention will be specifically described.

In a continuous processing apparatus, both ends of the film are fixed in the continuous processing apparatus by the film fixing means of the film transport apparatus according to the present invention. Thereafter, drying and heat treatment are performed by the heat treatment means while being conveyed by the conveyance device according to the present invention. Specific examples of the heat treatment unit include a far-infrared heater, a hot air heater, and the like. These are installed at locations where the film fixed to the film transport device can be effectively treated. Drying processing, heat treatment, in order to be performed effectively, a continuous processing apparatus including a film transport device and a heat treatment means,
Preferably, it is in an overall chamber. In these heat treatment means, conditions such as a temperature range and a heating time are selected by the treatment to be applied to the film, and adjustment of the heat treatment means and adjustment of the traveling speed of the transfer device are performed.
Further, the continuous processing apparatus may be constituted by a plurality of continuous chambers having different temperature conditions. In the plurality of chambers, by the film transport device according to the present invention,
The film is transported and moved, and the film is subjected to post-processing.

During these post-treatments, the film shrinks. Due to this contraction, the pair of chains of the film transport device are strongly pulled from each other. In the prior art, this force loads the end of the chain, causing the chain to tilt obliquely and contact the guide rail. However, according to the structure of the chain according to the present invention, even if the chain is strongly pulled due to the contraction of the film, the rotating rolls are in contact with the guide rails, so that the rotating rolls contact the rails with a uniform force without tilting. Therefore, the rotation of the rollers of the chain does not deteriorate, and wear can be prevented. Therefore, dust generation due to abrasion can be prevented, and adhesion of foreign matter to the film can be prevented. Prevents wear and extends the life of guide rails and chains

[0030]

According to the film transport apparatus of the present invention, the chains are stacked in a plurality of layers, and the chains are guided by the plurality of guide rails. Does not tilt and contacts the guide rail with even force. Thus, the rotation of the rollers of the chain does not deteriorate, and wear can be prevented. Therefore, dust generation due to abrasion can be prevented, and adhesion of foreign matter to the film can be prevented. Further, by preventing abrasion, there is an advantage that the life of the guide rail and the chain is prolonged.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a film transport device according to the present invention.

FIG. 2 is a cross-sectional view taken along a plane A of the embodiment.

FIG. 3 is a conceptual diagram showing a basic configuration of a film transport device according to the present invention.

FIG. 4 is a perspective view of another embodiment of the film transport device according to the present invention.

FIG. 5 is a cross-sectional view taken along a plane C of the embodiment.

FIG. 6 is a cross-sectional view of still another embodiment of the film transport device according to the present invention.

FIG. 7 is a partially enlarged perspective view of a conventional film transport device.

FIG. 8 is a cross-sectional view of the film conveying device shown in FIG.

[Explanation of symbols]

 10: film transport device 11; conveyor 12: film 14; film fixing device 16; film peeling device 18; moving device 20; chain 20a; lower chain 20b; upper chain 22: fixing member 24; guide rail 24a; 24b; Upper guide rail 26; Stage 28; Film fixing pin 30; Pin sheet 32; Link 34; Rotating roll 36; Film fixing clip 38; Stage 40; Roller 42; Female screw 44; Male screw 50; Technical film transport device 112; Film 120; Film fixing pin 122; Stage 124; Chain 126; Stage 128; Rotating roll 130; Guide rail 132;

Claims (6)

[Claims] 1. A conveying device in a continuous processing step of a continuously manufactured film, comprising: a pair of conveyors for conveying the film while fixing at least both side ends of the film; and driving the conveyor. A driving device, wherein the conveyor is composed of a film fixing means, a stage connected to the film fixing means, an endless chain connected to the stage, and a guide rail for guiding the chain, and A film transport device in which guide rails are installed sandwiching the front and back of the stage. 2. The film transport device according to claim 1, wherein the chain and the guide rail are installed so as to sandwich the front and back of the stage. 3. The guide rail according to claim 1, wherein the guide rail is installed so as to sandwich the front and back of the stage by incorporating a chain in which a plurality of links are formed in layers on the front and back of the stage. The film transport device according to claim 2. 4. The film transport device according to claim 1, wherein the film fixing means comprises a pin sheet having a film fixing pin protruding therefrom. 5. The film transport device according to claim 1, wherein said film fixing means includes a film fixing clip. 6. A continuous processing device in a continuous film production process, comprising at least a heat treatment means and the film transport device according to any one of claims 1 to 5.