JP2002219749A - Tenter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism for surely feeding a lubricant between a roller and rail without decreasing a clean degree in a tenter for the tenter wherein a clip wherein a metal made roller is provided, a sheet-like material in conveyance sent in from a specific inlet, while the material travels on a specific metal-made rail with the metal-made roller, is held at a specific holding start position and the holding is released at a specific holding release position, is provided, and by applying crosswise tension to the sheet-like material with the clip, the sheet-like material is stretched crosswise. SOLUTION: A lubricant feeder 38 having an application component 38 for applying lubricant to a roller 352 by a method wherein the lubricant is fed from one end part and the other end part comes in contact with the roller 352, is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tenter in which a sheet being conveyed is gripped from both sides by clips, and a tension is applied to the sheet by the clips in the lateral direction so that the sheet is stretched in the lateral direction.

[0002]

2. Description of the Related Art Sheets made of a thermoplastic resin are widely used as supports for photographic films, packaging films, supports for magnetic recording tapes, and the like.

[0003] In many cases, a sheet made of a thermoplastic resin is cast while cooling a molten thermoplastic resin to form a sheet, and then the sheet has a necessary strength. It is manufactured by stretching in a longitudinal direction or by stretching in a tenter in a transverse direction.

[0004] When a sheet is stretched in a transverse direction in a tenter, it has been generally practiced to stretch the sheet in the transverse direction while conveying the sheet in the tenter while applying heat. In such a tenter that extends in the lateral direction while being conveyed, the sheet-like material conveyed to the tenter is gripped from both sides by clips having metal rollers, and provided on the tenter by the rollers of the clips. Moving the predetermined metal rails so that the clips are separated from each other in the conveying direction of the sheet-like material, and releasing the grip of the sheet-like material by the clips at the exit of the tenter. There is.

When foreign matter adheres to a sheet-like material, the sheet-like material to which the foreign matter has adhered is almost always
The product will be defective. For this reason, severe cleanliness is required in the tenter.

However, in such a tenter having a mechanism in which a metal roller travels on a metal rail, metal powder is generated due to friction between the roller and the rail, and the degree of cleanness in the tenter is reduced. There is a tendency.

Therefore, conventionally, measures have been taken to supply lubricating oil between the roller and the rail in order to prevent the generation of metal powder due to friction. In order to implement this measure, conventionally, lubricating oil has been run down on the rails, or mist-like lubricating oil has been sprayed on the rollers and rails.

[0008]

However, if lubricating oil continues to flow down onto the rail, oil residue will accumulate on the rail, and if the lubricating oil is manufactured for a long time, the supply of lubricating oil between the roller and the rail will be reduced. There was a problem of being cut off by the residue. Further, when the mist-like lubricating oil is sprayed on the rollers and rails, the lubricating oil scatters to some extent even in the surrounding atmosphere, and there is a problem that the degree of cleanness in the tenter is reduced.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a tenter having a mechanism for reliably supplying lubricating oil between a roller and a rail without lowering the degree of cleanness in the tenter. And

[0010]

A tenter according to the present invention for achieving the above object has a metal roller, and the metal roller travels on a predetermined metal rail with a predetermined roller from a predetermined entrance. It is provided with a clip for gripping the fed sheet-like material being conveyed at a predetermined grasp start position and releasing the grip at a predetermined grip release position, and applying a lateral tension to the sheet-like material with the clip. In a tenter for extending a sheet-like material in a lateral direction, a lubricating oil supply tool having an application member for supplying lubricating oil from one end and being in contact with the roller at the other end and applying lubricating oil to the roller is provided. Features.

In the tenter of the present invention, since the lubricating oil is directly applied to the roller by the application member impregnated with the lubricating oil, the lubricating oil does not scatter, and the cleanliness in the tenter may be reduced. There is no. Further, since a uniform amount of the lubricating oil can be reliably supplied to any of the rollers, the lubricating oil can be reliably supplied between the roller and the rail.

Here, in the tenter of the present invention, the coating member may be felt.

In the tenter according to the present invention, it is preferable that the tenter includes a suction device having a first suction port for sucking dust attached to the roller.

Although dust easily adheres to the rollers running on the rails, it is possible to prevent a decrease in the degree of cleanness in the tenter due to the dust adhering to the rollers due to the suction by the first suction port.

Further, in the tenter according to the present invention, it is further preferable that the suction device is provided with a felt for wiping lubricating oil applied to the roller.

[0016] In the aspect including the felt for wiping the lubricating oil, the surplus amount of the lubricating oil applied to the roller can be wiped, thereby preventing a decrease in cleanness in the tenter due to the surplus lubricating oil. In addition to the above, dirt on the peripheral surface of the roller can be wiped off, and from this point, it is possible to prevent a decrease in cleanliness in the tenter. Further, the lubricating oil applied to the roller can be spread thinly over the entire circumference of the roller, and the lubricating oil can be more reliably supplied between the roller and the rail.

Still further, in the tenter of the present invention, it is still more preferable that the suction device has a second suction port for sucking felt dust of the felt for wiping the lubricating oil.

When the wiping member wipes off the excess lubricating oil of the roller, the felt dust easily rolls up from the contact surface of the wiping member with the roller. In addition, it is possible to prevent a decrease in cleanliness in the tenter due to felt dust.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an entire sheet manufacturing apparatus for manufacturing a sheet made of polyester which is a thermoplastic resin as a support of a photographic film will be described with reference to FIGS. This will be described below with reference to FIG.

FIG. 1 is a view for explaining the first half of the sheet-like material manufacturing apparatus, and FIG. 2 is a view for explaining the latter half of the sheet-like material manufacturing apparatus.

The sheet manufacturing apparatus 1 cools a molten thermoplastic resin into a sheet while casting it into a sheet, and then stretches the sheet in the longitudinal direction. A casting apparatus 10 for continuously producing a photographic film support by stretching in the machine direction, comprising: a casting apparatus 10 for casting a thermoplastic resin in a molten state into a sheet form; And a tenter 30 for stretching in the horizontal direction, and a winding device 40 for winding the manufactured support into a roll. Further, at the time of starting the apparatus, the sheet-like material manufacturing apparatus 1 gradually adjusts and stabilizes the manufacturing conditions from the upstream apparatus, and finally passes the sheet-like material to the winding device 40. Therefore, at the exit side of each of the casting device 10, the longitudinal stretching device 20, and the tenter 30, unsatisfactory products are collected that are transported until the respective devices are adjusted to the production conditions and stabilized. A recovery device (not shown) for performing the operation is provided. In addition, these recovery devices are operated even when the devices are prepared for some reason and the products are insufficient for some reason after the devices have been adjusted to the manufacturing conditions and moved to the manufacturing stage.

In the production of the sheet-like material, first, as an example, virgin pellets obtained by polymerizing terephthalic acid and ethylene glycol into pellets and regenerated raw materials obtained by reusing the materials recovered by each recovery device are separately separated. Then, the mixture is heated in a state in which both are mixed to obtain a thermoplastic resin in a molten state.

The casting apparatus 10 comprises a die 11 and a rotating drum 1
2 is provided. The die 11 has a slit-shaped lip for discharging the molten thermoplastic resin, and is provided above the rotating drum 12. The molten thermoplastic resin obtained by heating the virgin pellets and the recycled material in a mixed state is continuously discharged from the lip portion of the die 11 to the peripheral surface of the rotary drum 12. The thermoplastic resin discharged onto the peripheral surface of the rotary drum 12 is substantially 3 /
Until four rotations are made, the outer peripheral surface of the rotating drum 12 is water-cooled, and the outer peripheral surface of the rotating drum 12 is rapidly cooled by being blown with air from the outer peripheral surface and air-cooled. It becomes an oriented sheet.

FIG. 2 shows a state in which the manufactured support is wound by a winding device 40, and FIG.
In FIG. 2 and FIG. 2, the path from the molten thermoplastic resin discharged from the lip of the die 11 to the winding device 40 serving as a support is indicated by a dashed line, and the path is not in the middle of the path. The path collected by the illustrated collecting device is indicated by a two-dot chain line.

The sheet formed by the casting apparatus 10 is
Next, it is conveyed to the longitudinal stretching device 20 shown in FIG.

The longitudinal stretching device 20 is provided with a plurality of rotating rolls 21 arranged between the entrance and the exit so that the conveyed sheet material is wound around at a predetermined wrap angle. In addition, each of the plurality of rotating rolls 21
Each is adjusted to a predetermined temperature. The conveyed sheet material is conveyed toward the outlet while being heated or cooled by these rotating rolls 21. These rotating rolls 21 include a plurality of preheating rotating rolls 21a for heating the sheet-like material before stretching, and a plurality of stretching rotating rolls 21 for stretching the sheet-like material in the longitudinal direction while heating the sheet-like material.
b and a plurality of cooling rotating rolls 21c for cooling the sheet-like material stretched in the longitudinal direction. The longitudinal stretching of the sheet-like material in the longitudinal stretching device 20 is performed by setting the rotation speed of the rotation stretching roll on the outlet side of the plurality of stretching rotating rolls 21b to be higher than the rotation speed of the rotating stretching roll on the entrance side. This is performed by passing a sheet-like material in a state where the sheet-like material has passed.

The sheet-like material stretched in the longitudinal direction by the longitudinal stretching device 20 is then conveyed to a tenter 30 shown separately in FIGS.

The tenter 30 has a plurality of sections each adjusted to a predetermined temperature (FIG. 1 shows an upstream section of the plurality of sections, and FIG.
Represents a downstream section of the plurality of sections, and sections in the middle are not shown. ). These sections are arranged in order from the upstream side, a preheating zone, a stretching zone,
A plurality is assigned to each of the heat setting zone, the thermal relaxation zone, and the cooling zone. In addition, clips gripping both sides of the sheet-like object from both sides of the sheet-like object run in each section toward the downstream side. The sheet-like object passes through each section with both sides gripped by the clip. First, in the preheating zone, the sheet-like material being conveyed is heated, and in the stretching zone, the clip is conveyed while applying tension to the sheet-like material in the transverse direction in an atmosphere at a higher temperature than the preheating zone. The sheet is stretched in the transverse direction. In the heat setting zone, the molecular orientation of the sheet is fixed in an atmosphere at a higher temperature than the stretching zone. In the thermal relaxation zone, the sheet is annealed, and in the cooling zone, the sheet is rapidly cooled. The sheet-like material exiting from the last section on the downstream side is a sheet-like material in which both sides held by clips of the tenter are removed according to the path shown by the dotted line in FIG. Is transported toward the winding device 40 as a support to be manufactured by the sheet-like material manufacturing apparatus.

Then, in order to allow the support to be accurately wound on the winding device 40, the support conveyed up to immediately before the winding device 40 is controlled in the horizontal position and the winding device 4 is rotated.
After being adjusted in tension at the time of winding to zero, it is wound up in a roll shape by the winding device 40.

Here, a tenter 30 separately shown in FIGS. 1 and 2 in the sheet manufacturing apparatus shown in FIGS. 1 and 2 corresponds to an embodiment of the tenter of the present invention. Before describing in detail the characteristic parts of the tenter, tenter 3
The tenter 30 will be described in detail with reference to FIG.

FIG. 3 is a perspective view of the tenter.

The tenter 30 has an inlet portion 31 into which the sheet-like material is fed, an outlet portion 32 from which the sheet-like material is sent out, and two sides provided on both sides of the sheet-like material sent from the inlet portion.
And a chain 33 provided between the inlet and the outlet as part of the configuration. In FIG. 3, the sheet-like object is represented by a dashed line.

The box 33 is a long rectangular cylindrical body formed by connecting a plurality of sections each adjusted to a predetermined temperature. The plurality of sections are assigned to the preheating zone 30a, the stretching zone 30b, the heat fixing zone 30c, the heat relaxation zone 30d, and the cooling zone 30f in order from the entrance 31 side. Further, although omitted in the description of the tenter in the sheet-like material manufacturing apparatus described above, the tenter 30 is provided with a neutral zone 30e between the heat relaxation zone 30d and the cooling zone 30f. The neutral zone 30e includes a heat relaxation zone 30d and a cooling zone 30d.
Since the temperature difference from f is large, this zone has a function of shutting off heat between both zones.

The two chains 34 circulate in the respective sections between the inlet 31 and the outlet 32 (see arrows in the figure). The interval is the outlet 3 in the preheating zone 30a.
At the end of the stretching zone 30b, three to four times the distance between the two chains 34 at the inlet 31 at the end of the stretching zone 30b. It is arranged so that it spreads to the extent of about. Further, both the chains 34 are in the zone after the heat fixing zone 30c.
The intervals spread from about twice to about four times are arranged at slightly narrower intervals. Also, a number of clips (not shown) are connected to each of the two chains 34. These clips grip both sides of the sheet-like material to be sent in at the inlet 31, and move toward the outlet 32 with the circulation of the chain 34 in a state where the both sides are gripped.
The sheet-like object gripped on both sides by these clips passes through each section toward the outlet 32. Therefore, the clips connected to each chain 34 are connected to the entrance 3
From 1 to the end of the stretching zone 30b, they move so as to be apart from each other, and the sheet is stretched to a width of about 3 to 4 times the width in the horizontal direction when fed into the inlet 31. .

In each section, a part of the air in each section is once collected, adjusted to a predetermined temperature, and then blown onto a sheet passing through the temperature-adjusted air.
The sheet is heated from the preheating zone 30a to the heat relaxation zone 30d, and is cooled in the cooling zone 30f. The heat setting zone 30c and the heat relaxation zone 30
In d, the sheet is heated to near the softening point of the sheet.

The sheet-like material exiting the box 33 is sliced on both sides held by clips. At the outlet 32, the gripping of the clip holding both sides of the sheet is released, and the central portion of the sheet remaining after the sides are sliced is sent out as a product. Note that the sliced side portions of the sheet-like material are collected by a collecting device (see a path indicated by a dotted line in FIG. 2).

Next, a characteristic portion of the tenter according to the embodiment of the present invention will be described.

FIG. 4 is a diagram schematically showing the configuration of the entrance when the tenter of this embodiment is viewed from above.

As described with reference to FIG. 3, the tenter 30 of the present embodiment includes a large number of clips and a chain 34 to which the large number of clips are connected, and further includes a rail member 36 as shown in FIG. , A sprocket 37, a lubricating oil supply tool 38, and a suction device 39. In addition,
The dashed line shown in FIG. 4 indicates a sheet-like material being conveyed, and each of two arrows X shown at the entrance 31 of the tenter 30 in FIG. 4 indicates that the clip has been conveyed. This represents a gripping start position at which gripping of a sheet-like object is started.

The chain 34 makes a U-turn at the entrance portion 31, and power is transmitted from the sprocket 37 at a portion where the U-turn is made (hereinafter, this portion is referred to as a return head portion). The sprocket 37 rotates in the direction of the arrow, and the moving direction of the clip is the same as the direction of the arrow. Further, a lubricating oil supply device 38 and a suction device 39 are provided in each of the return head portions on both sides in this order from the upstream side in the moving direction of the clip.

Next, the clip will be described with reference to FIGS.

FIG. 5 is a perspective view showing a state in which clips provided on the tenter of this embodiment are connected, and FIG.
FIG. 3 is a cross-sectional view illustrating a clip and a rail member.

The clip 35 is heated at the same time as the sheet is heated in the box 33 of the tenter 30, and is made of metal having excellent heat resistance.
Four upper and lower rollers 352, two rotating shafts 353,
One link plate 341, a gripping member 354, and FIG.
And two back rollers 355 shown in FIG. The upper and lower rollers 352 are metal rollers provided above and below each of the two rotating shafts 353, and correspond to rollers referred to as a tenter of the present invention. The rotation shaft 353 is
It penetrates the main body 351 rotatably. Also,
One end of the link plate 341 is located between the upper and lower rollers 352 and the main body 351 while being inserted through the rotation shaft 353, and the other end is inserted into the rotation shaft closer to the adjacent clip 35. Therefore, the adjacent clips 35 are connected by the link plate 341, and the endless chain 34 is formed by the collection of the link plates 341. The chain 34 conveys the clip 35 from the entrance 31 to the exit 32 by circulating in each section between the entrance 31 and the exit 32. As described with reference to FIG. 3, the chains 34 are provided on both sides of the sheet.

The grip member 354 includes a grip portion 3541,
A first portion 3542, a second portion 3543, and a rotating shaft 3544 are provided. The first portion 3542 and the second portion 3543 are provided with the rotating shaft 3544 interposed therebetween. The rotation shaft 3544 is rotatably supported by the main body 351, and the gripping member 354 is
By rotating around the center 44, the gripping posture (FIG. 6)
In FIG. 6, the posture is switched between a gripping member posture represented by a solid line) and a grip release posture (a posture of the gripping member represented by a two-dot chain line in FIG. 6). Here, the holding posture and the holding release posture of the holding member 354 will be described in more detail. The main body 351 is mounted on the mounting surface 3
The two sides of the sheet are placed on the placement surfaces 3511 of the two clips 35 that have been transported to the gripping start position by the circulation of the two chains 34, respectively. The gripping member 354 is rotated about the rotation shaft 3544 by the illustrated clip gripping mechanism, and the gripping portion 3541 is moved to the mounting surface 35.
11, each side of the sheet-shaped object placed on the placement surface 3511 is gripped by the gripping portion 3511 and the placement surface 351.
Insert with 1. That is, the gripping portion 3541 approaches the mounting surface 3511 to a predetermined length less than the thickness of the sheet-like material sent from the entrance 31 and the posture of the gripping member 354 when gripping the sheet-like material is the gripping posture. It is. On the other hand, the outlet 3
In 2, the gripping member 354 is rotated about the rotation axis 3544, the gripping portion 3541 is separated from the mounting surface 3511, and both sides of the sheet-shaped material mounted on the mounting surface 3511 are respectively. Of the holding portion 3511 and the mounting surface 3511 is released. That is, the grip portion 35
41 is separated from the mounting surface 3511 to a predetermined length equal to or greater than the thickness of the sheet-like object sent from the entrance portion 31, and the posture of the gripping member 354 when the sheet-like object is not being gripped is the grip release posture.

The two back rollers 3 shown in FIG.
55 is provided vertically on the surface of the main body 351 opposite to the side on which the gripping member 354 is provided.

Next, the rail member 36 will be described with reference to FIG. The rail member 36 shown in FIG. 6 has metal rail portions 361 having a substantially U-shaped cross section provided above and below the main body 351. The left side surface of the rail portion 361 in FIG. 6, that is, the portion on the gripping member 354 side is the outer peripheral track, and the opposite portion is the inner peripheral track. The upper and lower rollers 352 are accommodated in the rail portion 361 in a state of contacting the outer track and the inner track, and the chain 34 is attached to the sprocket 37.
The upper and lower rollers 352 run on the rail portion 361 in response to receiving power from (see FIG. 4). The lower rear roller 355 of the two rear rollers 355 runs while receiving the weight of the clip 35 while being placed on the inner track of the lower rail portion 361. Also,
Upper rear roller 355 and upper rail member 361
When the clip 35 is lifted with the circulation of the chain 34, the upper rear roller 355 is moved to the upper rail portion 361.
However, in contact with the inner track, further lifting is prevented. In addition, as shown in FIG.
Are provided on each of the left and right sides of the tenter 30, one of which is provided with upper and lower rollers 35 when conveying a sheet-like material.
The other is that when the clip 34 returns from the outlet 32 to the inlet 31, the upper and lower rollers 35 move.
2 runs.

Next, the lubricating oil supply tool 38 will be described.

As described with reference to FIG. 4, the lubricating oil supply tools 38 provided on each of the return head portions on both sides are
The lubricating oil is supplied to the upper and lower rollers 352, and is provided vertically. The lubricating oil supply device provided above supplies lubricating oil to the roller above the upper and lower rollers 352, and the lubricating oil supply device provided below provides lubricating oil to the roller below the upper and lower rollers 352. Here, the lubricating oil supply tool provided above will be described with reference to FIGS. 7 and 8.

FIG. 7 is a perspective view of an entrance portion of the tenter of the present embodiment, and FIG. 8 is a side view of a lubricating oil supply tool provided in the tenter of the present embodiment.

The lubricating oil supply 38 has a supply pipe 381, a felt 382, a base 383, and a mounting member 384.

The supply pipe 381 supplies lubricating oil to the felt 382, and has an opening at one end inserted into the base 383. In the present embodiment, the lubricating oil supply tool 38
Although not shown, a timer mechanism is also provided, and lubricating oil is supplied from the supply pipe 381 to the felt 382 every predetermined time.

The felt 382 has a cylindrical shape,
One end is in contact with the peripheral surface of the upper and lower rollers 352, and the lubricant is applied to the peripheral surface of the upper and lower rollers 352. Therefore, the felt 382 corresponds to the application member according to the present invention. The felt 382 has the other end inserted into the base 383 so that one end projects diagonally upward to prevent the supplied lubricating oil from dripping. Inside the base 383, lubricating oil is supplied from a supply pipe 381 to a portion where the felt 382 is inserted, and the supplied lubricating oil gradually flows toward a portion of the felt 382 that projects obliquely upward from the base 383. Soak in. Here, if the supply amount of the lubricating oil is too large, the lubricating oil is excessively applied to the upper and lower rollers 352, and the upper and lower rollers 3
Due to the rotation in the travel of 52, surplus lubricating oil scatters around and the cleanliness in the tenter may be reduced. Therefore, in the present embodiment, a wiping member for wiping off excess lubricating oil, which will be described later, is provided while controlling the supply amount of lubricating oil to be an appropriate amount. The upper and lower rollers 352 are in a state of being heated to a high temperature, and therefore, a felt 382 having excellent heat resistance is employed.

The attachment member 384 is for attaching the base 383 to the main body 30 'of the tenter. In this attachment, the base 383 is attached to the main body 30 ′ of the tenter so that one end of the felt 382 contacts the upper side of the peripheral surface of the upper and lower rollers 352 in consideration of the dripping of the lubricating oil on the peripheral surface of the upper and lower rollers 352. It is attached. By the way, when any trouble occurs in the tenter 30 during the production of the sheet-like material, the conveyance of the clip 35 may be stopped urgently.
When the emergency stop is performed, the behavior of the clip 35 is temporarily disturbed by the momentum that has been transported so far, and the upper and lower rollers 352 of the clip 35 collide with the lubricating oil supply tool 38 and the base body 38
There is a risk that the mounting position of 3 will be out of order. For this reason,
The mounting member 384 is made of a plate member having a spring property in order to absorb an impact caused by the collision of the upper and lower rollers 352 during an emergency stop.

As described above, the lubricating oil supplier 38
Is for directly applying the lubricating oil to the upper and lower rollers 352 by the felt 382 impregnated with the lubricating oil.
Lubricating oil does not scatter, and there is no fear of lowering the degree of cleanness in the tenter 30. Also, which upper and lower rollers 35
2 can reliably supply a uniform amount of lubricating oil, so that lubricating oil can be reliably supplied between the upper and lower rollers 352 and the rail 361.

Finally, the suction device 39 will be described.

As described with reference to FIG. 4, the suction device 39 is disposed downstream of the lubricating oil supply device 38 in the moving direction of the clip 35, and is provided for each lubricating oil supply device. Is provided. Here, the suction device provided for the lubricating oil supply tool 38 shown in FIG. 8 will be described using FIG. 7 and FIGS. 9 to 11. Note that the suction device 39 shown in FIG. 7 is shown in a partially transparent state for clarity.

FIG. 9 is a perspective view of a suction device provided in the tenter of this embodiment, FIG. 10 is a side view of the suction device shown in FIG. 9, and FIG. 11 is a sectional view taken along line AA of FIG.

The suction device 39 includes a first suction port 391,
A wiping member 392 and a plurality of second suction ports 393 are provided.

The first suction port 391 is connected to the upper and lower rollers 352
It opens toward the upper end face of. Although dust easily adheres to the upper and lower rollers 352 running on the rail portion 361, the first suction port 391 can remove dust attached to the upper end surface of the upper and lower rollers 352, and cleans the inside of the tenter. The degree can be improved.

The wiping member 392 is made of felt and arranged so as to be in contact with the peripheral surface of the upper and lower rollers 352. The wiping member 392 has a function of wiping an excess amount of the lubricating oil applied to the peripheral surface of the upper and lower rollers 352 by the lubricating oil supply tool 38 and thinly extending the lubricating oil to the entire periphery of the upper and lower rollers 352. Also, the upper and lower rollers 352
It also has a function to wipe off dirt on the peripheral surface. For this reason,
The shape of the surface of the wiping member 392 that is in contact with the peripheral surface of the upper and lower rollers 352 is V-shaped so as to increase the contact area with the peripheral surface of the upper and lower rollers 352.
The shape is not limited to this, and may be, for example, a curved shape that matches the peripheral surface of the upper and lower rollers 352. Since the upper surface of the upper and lower rollers 352 is easily contaminated, the wiping member 392 is arranged so as to be in contact with the upper surface of the upper and lower rollers 352.

Each of the plurality of second suction ports 393 is an opening that opens toward the contact surface of the wiping member 392 with the upper and lower rollers 352 and that is provided above the wiping member 392. Although the felt dust easily rolls up from the contact surface of the wiping member 392 which is in contact with the upper and lower rollers 352 with a large contact area, since the felt dust can be sucked by these second suction ports 393, the felt dust is removed. It is possible to prevent the degree of cleanness in the tenter 30 from decreasing.

Although not employed in the suction device 39 of the tenter 30 of this embodiment, the suction device 39 is further provided on the upper surface of the main body 351 of the clip 35 in order to further improve the cleanness of the tenter. A third suction port for sucking the attached dust may be provided.

[0063]

As described above, according to the tenter of the present invention, it is possible to reliably supply the lubricating oil between the roller and the rail without reducing the cleanness in the tenter. .

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a first half of a sheet-like material manufacturing apparatus.

FIG. 2 is a view for explaining the latter half of the sheet-like material manufacturing apparatus.

FIG. 3 is a perspective view of a tenter.

FIG. 4 is a diagram schematically illustrating a configuration of an entrance when the tenter of the present embodiment is viewed from above.

FIG. 5 is a perspective view showing a state in which clips provided on the tenter of the present embodiment are connected.

FIG. 6 is a sectional view showing a clip and a rail member.

FIG. 7 is a perspective view of an entrance of the tenter of the present embodiment.

FIG. 8 is a side view of a lubricating oil supply tool provided in the tenter of the present embodiment.

FIG. 9 is a perspective view of a suction device provided in the tenter of the present embodiment.

FIG. 10 is a side view of the suction device shown in FIG. 9;

FIG. 11 is a sectional view taken along line AA of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet manufacturing apparatus 10 Casting apparatus 11 Die 12 Rotating drum 20 Vertical stretching apparatus 21 Rotating roll 21a Preheating rotating roll 21b Stretching rotating roll 21c Cooling rotating roll 30 Tenter 31 Inlet part 32 Outlet part 33 Box body 34 Chain 341 Link plate 35 Clip 351 Main body 3511 Mounting surface 352 Vertical roller 353 Rotating shaft 354 Holding member 3541 Holding portion 3542 First portion 3543 Second portion 3544 Rotating shaft 355 Rear roller 36 Rail member 361 Rail portion 37 Sprocket 38 Lubricating oil supply device 381 Supply pipe 382 Felt 383 Base 384 Mounting member 39 Suction device 391 First suction port 392 Wiping member 393 Second suction port 40 Winding device

Claims (5)

[Claims] 1. A starting position for grasping a sheet-like material being conveyed from a predetermined entrance while having a metal roller and traveling on a predetermined metal rail by the metal roller. A tenter that grips and releases the grip at a predetermined grip release position, and extends the sheet in the lateral direction by applying a lateral tension to the sheet with the clip; A tenter, comprising: a lubricating oil supply tool having a coating member to which lubricating oil is supplied and whose other end is in contact with the roller to apply the lubricating oil to the roller. 2. The tenter according to claim 1, wherein the application member is a felt. 3. The tenter according to claim 1, further comprising a suction device having a first suction port for sucking dust attached to the roller. 4. The tenter according to claim 3, wherein the suction device includes a felt for wiping lubricating oil applied to the roller. 5. The tenter according to claim 4, wherein the suction device has a second suction port for sucking felt dust of the felt for wiping the lubricating oil.