JP2009137177A - Film heat-treating furnace and its maintenance method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a film heat-treating furnace and its maintenance method, which allow a brief maintenance of rollers. <P>SOLUTION: In a heat-treating furnace which heat-treats a film inserted zigzag on parallel arranged multiple rollers 3 by moving it, bearing members 33 are extended from shafts 32 of rollers 3 alternately in opposite directions, and the film is inserted zigzag to the multiple rollers 3 without crossing over two bearing members 33 after mounting the bearing members 33 alternatively to two supports e.g. an outer frame 4 and an inner frame 5; wherein the supports are slidable in directions separate from the shafts of rollers 3. When the inner frame 5 is pulled out, cleaned up rollers 3 can be returned again in the furnace without cutting the film, since the film is hung up over the rollers 3 on the side of outer frame 4 left in the furnace. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a film heat treatment furnace for heat-treating a film by contact with a roller and a maintenance method for the film heat treatment furnace.

2. Description of the Related Art As a heat treatment furnace for heat-treating a film by roller contact, a heat treatment furnace in which a large number of rollers are arranged in a row is known. In such a film heat treatment furnace, every other film is inserted in a zigzag manner and moved between a large number of rollers heated or cooled to a required temperature. The film is heat treated by contacting a roller maintained at the required temperature.

In the film heat treatment furnace as described above, if the roller is contaminated by long-term use, the film may become wrinkled and cannot be used as a product. Therefore, it is necessary to appropriately maintain the roller. Conventionally, in the maintenance of the rollers, each of the rollers is pulled out individually (for example, Patent Document 1), or a plurality of continuous rollers are pulled out at a time. However, when the rollers are pulled out one by one, since the number of rollers is large, it takes a long time to pull out the rollers. In addition, when pulling out a plurality of continuous rollers at once, it was necessary to pull out the rollers after cutting the film once, so after the cleaning was completed, the film was again applied to the plurality of closely arranged rollers. We had to do a very tedious task of zigzag insertion. For this reason, there is a problem that the total maintenance time becomes long both when the rollers are pulled out one by one and when a plurality of continuous rollers are pulled out at once.
JP-A-8-220723 (FIG. 6)

The present invention has been made in order to provide a film heat treatment furnace and a film heat treatment furnace maintenance method capable of performing roller maintenance in a short time in view of the above-described conventional problems.

A film heat treatment furnace according to the present invention made to solve the above-mentioned problems is a film heat treatment furnace in which a film inserted in a zigzag manner is moved to a large number of rollers arranged in the furnace and heat treated. Is attached to two supports that can be slid independently in the axial direction of the roller via a bearing member, and the film is inserted into a large number of rollers in a zigzag manner without intersecting the bearing member. To do.

  The film heat treatment furnace of the present invention is a film heat treatment furnace in which a film inserted in a zigzag manner is moved to a large number of rollers arranged in the furnace for heat treatment. The bearing member is extended to the two and attached to two supports that can slide independently in the axial direction of the roller, and the film is zigzag-shaped on multiple rollers without crossing the bearing member. It is characterized by having been inserted through.

In addition, two support bodies can be arranged opposite to each other on both sides of a roller array composed of a large number of rollers, and a large number of rollers can be supported on every other support body. In addition, a large number of rollers are arranged in an inverted U shape, and two supports are arranged in an inverted U shape on the outside of the roller, and an inverted U shape is arranged on the inside of the roller. As consisting of the inner frame, a large number of rollers can be supported every other one on the outer frame and the inner frame.

Further, the maintenance method of the film heat treatment furnace of the present invention uses the film heat treatment furnace as described above, draws one of the supports out of the furnace, cleans the rollers, and returns to the furnace. After the film is again loaded on the support roller, the other support is pulled out of the furnace to clean the roller and then returned to the furnace, and the film is again transferred to the other support roller. It is characterized by this.

In the film heat treatment furnace according to the present invention, by pulling out one support body to the outside of the furnace, the rollers supported by this support body can be pulled out together, so that it does not take a long time to pull out the rollers. In addition, since the film is stretched over the roller of the support that remains in the furnace, when the cleaned roller is returned to the furnace again, it is easily inserted into the roller in a zigzag manner without cutting the film. can do.

In the invention as described above, since the support body is disposed to face both sides of the roller row, the support structure of the roller can be simplified.

Further, when a large number of rollers are arranged in an inverted U shape, the heat treatment furnace can be made small.

In addition, the maintenance method for the film heat treatment furnace according to the present invention was completed because the film remained on the support roller remaining in the furnace even when one of the supports was pulled out. When the roller is returned to the furnace again, it can be easily inserted into the roller in a zigzag manner without cutting the film. Therefore, there is an advantage that the maintenance time of the roller can be greatly shortened.

Embodiments of the present invention will be described below in detail with reference to the drawings.
A film heat treatment furnace according to the present invention is shown in FIGS. In the figure, a casing 1 of a heat treatment furnace has an air intake hole 11 on a side surface thereof, and a base having a double floor structure for exhausting air taken in from a vent hole 12 of a hearth 53 to the outside. 13 is provided. Front and rear side surfaces 61 and 62 of the casing 1 are attached so as to be openable and closable. The casing 1 has a film inlet 14 and an outlet 15 below the left and right side surfaces 63 and 64. In the vicinity of the inlet 14 and the outlet 15, a static eliminating unit 16 for the film and a guide roller 17 are arranged. The left and right side surfaces 63 and 64 of the casing 1 and the ceiling surface 65 are provided with a heater unit 2 including a ceramic heater 21 for emitting far infrared rays toward the roller 3 to heat the roller 3. . The heat treatment furnace is not limited to one that heats the film, and may be one that heat-treats at a low temperature of room temperature or lower.

In the heat treatment furnace, a large number of rollers 3 are formed in an inverted U-shaped roller array 31 with the intervals between the rollers 3 being close. The roller 3 is rotated in the direction of feeding the film by a driving source (not shown).

An outer frame 4 formed in an inverted U shape is disposed outside the roller row 31, and an inner frame 5 formed in an inverted U shape is disposed inside the roller row 31. The outer frame 4 and the inner frame 5 are supports for the roller 3. As shown in FIGS. 4 and 5, the rollers 3 are rotatably supported by the outer frame 4 and the inner frame 5 every other line. That is, the shaft 32 of the roller 3 is supported by a bearing 34 fixed to a bearing member 33, and this bearing member 33 extends in the opposite direction and is attached to the outer frame 4 and the inner frame 5. Yes. It is desirable to provide a shielding plate (not shown) between the bearing 34 and the roller 3 to protect the bearing 34 from the heat of far infrared rays.

In addition, when the roller row 31 is formed in a straight line shape, two supports are arranged on both sides of the roller row 31 so as to be opposed to each other, and the rollers 3 are separately distributed and supported on these supports. Can be made.

As shown in FIG. 5, the film is inserted into a large number of rollers in a zigzag manner so as not to cross the bearing member 33 in a side view. That is, since the film is inserted so as to contact the outer roller surface at the tip of the bearing member 33 on the roller shaft 32 side, the film and the bearing member 33 cross each other when either the outer frame 4 or the inner frame 5 is pulled out. Never do.

And the outer frame 4 which is one support body has a horizontal bar-like base 41 at the lower end, and the base 41 is provided with wheels 42 for facilitating the sliding movement of the outer frame 4. (FIG. 1). Since the wheel 42 is placed on the outer frame support plate 43, the wheel 42 can move on the outer frame support plate 43 in the axial direction of the roller 3. The outer frame support plate 43 protrudes horizontally inward from the outer frame 4 above the outlets 14 and 15.

The inner frame 5 as the other support body has a horizontal substrate 51 at the lower portion, and the substrate 41 is provided with wheels 52 for facilitating the sliding movement of the inner frame 5. The wheel 52 is placed on the hearth 53 and can move on the hearth 53 in the axial direction of the roller 3. Since the outer frame support plate 43 is provided at a position higher than the hearth 53 and higher than the inlet 14 and the outlet 15, the film passes between the base 41 of the outer frame 4 and the substrate 51 of the inner frame 5. It is possible to secure a clearance S for

Moreover, since the moving directions of the outer frame 4 and the inner frame 5 are stabilized by placing the wheels 42 and 52 on the rail 60 as shown in FIG. 3, the operation of pulling and pushing them can be easily performed. Can do.

In the structure configured as described above, when the film is subjected to heat treatment, the film discharged from the discharge roller (not shown) is transferred from the inlet 14 into the furnace via the guide roller 18. The fed film is inserted in a wavy shape or a zigzag shape between a plurality of rollers 3 to move left and right or up and down. At this time, since the roller 3 is heated to a required temperature by far infrared rays emitted from the heater 21, the film can be subjected to a heat treatment such as annealing while moving in contact with the large number of rollers 3. . The film that has passed through the roller row 31 and has been subjected to the heat treatment is sent out of the furnace through the outlet 15 and taken up by the take-up roller (not shown) through the guide roller 19. The film is charged by the static electricity removing unit 16 at the entrance 14 and the exit 15.

In the heat treatment furnace as described above, there is a high risk that the roller 3 is contaminated while the film is repeatedly heat-treated, and the film is wrinkled. Therefore, it is necessary to maintain the roller 3 at an appropriate frequency. is there. In order to perform maintenance in the heat treatment furnace of the present invention, after opening one of the front and rear side surfaces 61 and 62, for example, the inner frame 5 is first pulled out as shown in FIG. By pulling out the inner frame 5, the entire half of the rollers 3 can be pulled out at once. It should be noted that, when pulling out, it is desirable to make the roller 3 easy to pull out by slightly reducing the tension of the film.

When pulling out the rollers 3, it is important that the rollers 3 are alternately attached to the two supports 4 and 5 in order to pull out only the rollers 3 without leaving the film in the furnace and without cutting. This will be described with reference to FIGS. FIG. 5 is a side view of the main part of the film heat treatment furnace according to the present invention. Since the bearing members 33 of the roller 3 are alternately attached to the support 4 or 5, the presence of the roller 3 and the roller supports 4, 5 exists. In any range, a path through which the film can pass through a single line is ensured regardless of the cross section parallel to the film traveling direction. Thereby, since the roller 3 and the film are geometrically independent, the roller 3 can be moved regardless of the presence of the film.

If the bearing member 33 is attached only to the support body 5 on one side as shown in FIG. 7, if the support body 5 is moved in the axial direction of the roller 3 during maintenance, the bearing member 33 will move to the end of the film. When it approaches the point (point P in FIG. 7), it interferes with the film and is forced to cut the film.

The roller 3 on the inner frame 5 side is completely pulled out of the furnace, and then the roller 3 is cleaned. The roller 3 that has been cleaned is returned to its original position, but since the film is stretched over the roller 3 on the outer frame 4 side that is left in the furnace, the roller 3 can be easily moved without cutting the film. The film can be inserted in a zigzag shape.

After the inner frame 5 is returned, the outer frame 4 is pulled out and the roller 3 on the outer frame 4 side is cleaned. After cleaning the roller 3, the outer frame 4 is returned to the original position. At this time, since the film is stretched over the roller 3 on the inner frame 5 side left in the furnace, the film can be easily inserted into the roller 3 in a zigzag shape without cutting the film. If the roller 3 is heated to the required temperature by the heater unit 2 after the film is inserted as described above, the operation operation can be started again.

Depending on the material of the film, there may be a case where the zigzag shape cannot be maintained only by being passed over the roller by one support. In such a case, in FIG. 6, for example, when the outer frame 4 is left in the furnace, the inner frame 5 can be pulled out on both sides in the width direction of the furnace for each half of the roller for maintenance. By this method, since at least half of the width of the film is stretched over all the rollers, the shape during conveyance can be maintained even during maintenance.

FIG. 8 shows a film heat treatment furnace according to another embodiment of the present invention. In this film, the film is not inserted in a zigzag pattern every other roller, and the two rollers 3 are continuously stretched so as to contact one side surface thereof. Even in such a case, the outer frame 4 or the inner frame 5 can be pulled out without hooking the film by extending the bearing member 33 in a direction that does not intersect the film.

It is a side view of the film heat treatment furnace of the present invention. It is a front view of the film heat treatment furnace of the present invention. It is a perspective view of the film heat processing furnace of this invention. It is a principal part perspective view of the present invention concerning a film heat treatment furnace. It is a principal part side view of this invention which concerns on a film heat processing furnace. It is a perspective view of the film heat processing furnace of the state which pulled out the inner frame. It is a principal part side view of the conventional film heat processing furnace. It is a principal part side view of the film heat processing furnace which concerns on this invention of another form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing, 2 Heater unit, 3 Roller, 4 Outer frame, 5 Inner frame, 11 Intake hole, 12 Vent hole, 13 Base, 14 Film inlet, 15 Film outlet, 16 Static elimination unit, 17 Guide roller, 21 Heater, 31 roller train, 32 shafts, 33 bearing members, 34 bearing, 41 base, 42 wheels, 43 outer frame support plate, 51 substrate, 52 wheels, 53 hearth,

Claims (5)

In a film heat treatment furnace in which a film inserted through a number of rollers arranged in a furnace is moved and heat-treated, the rollers are moved to two supports that can slide independently in the axial direction of the roller via a bearing member. A film heat treatment furnace characterized in that, after being mounted, the film is inserted into a large number of rollers without crossing the bearing member. In a film heat treatment furnace in which a film inserted in a zigzag manner is moved to a large number of rollers arranged in the furnace for heat treatment, bearing members are extended in opposite directions from the roller shaft, A film heat treatment characterized in that the bearing member is attached to two supports that can slide independently in the axial direction of the roller, and the film is inserted into a plurality of rollers in a zigzag manner without intersecting the bearing member. Furnace. 2. The film heat treatment furnace according to claim 1, wherein two supports are arranged opposite to each other on both sides of a roller row composed of a large number of rollers, and a plurality of rollers are alternately supported on each support. An outer frame in which a large number of rollers are arranged in an inverted U shape and two supports are arranged in an inverted U shape outside the roller, and an inner frame is arranged in an inverted U shape inside the roller The film heat treatment furnace according to claim 1, wherein a plurality of rollers are alternately supported on the outer frame and the inner frame. Using the film heat treatment furnace according to any one of claims 1 to 4, the one support body is pulled out of the furnace and the roller is cleaned, and then returned to the furnace, and again on the roller of the one support body. After the film is bridged, the other support is pulled out of the furnace, the roller is cleaned, returned to the furnace, and the film is again bridged on the other support roller. Maintenance method of heat treatment furnace.

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