TWI548580B - A guide roller, a film transfer device, and a sheet forming machine - Google Patents

Description

Guide roller, film conveying device and sheet forming machine

The present invention relates to a guide roll, a film transfer device, and a sheet forming machine.

An extrusion type sheet forming machine is described in Fig. 1 of Patent Document 1. The sheet forming machine includes a film conveying device that conveys a belt-shaped carrier film, a coating device (die) that applies a slurry on a surface of the carrier film that is conveyed, and a drying device that The applied slurry is dried. The film conveying device includes a winding-out portion that supplies a carrier film from the support roller, a conveying portion that conveys the carrier film, and a winding portion that winds the carrier film in a roll shape. On the transport path of the carrier film, there is a pair of guide rolls that guide the carrier film to the discharge port of the die. The carrier film is conveyed while being in contact with the guide surface (roller surface) of the guide roller. The distance (gap) of the carrier film from the discharge port of the die is ensured to be a specific range by extruding the slurry from the discharge port of the die. Here, when the guide surface (roller surface) of the guide roller is formed flat with respect to the width direction of the carrier film, the film thickness of the slurry applied to the carrier film is often not uniform in the width direction. That is, in many cases, the closer to the central portion in the width direction of the carrier film, the larger the coating film thickness, and the coating film has a so-called medium-high shape.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 11-60006

As a countermeasure, it is considered to mechanically process the guide surface into a crown shape. The coating film thickness in the width direction is made uniform. However, when the film thickness characteristic in the width direction of the carrier film is changed in the middle of the coating operation, the guide roller mechanically processed into a convex shape cannot cope with the change in the film thickness characteristic, and the desired film cannot be obtained. Thick precision.

Accordingly, it is a primary object of the present invention to provide a guide roller capable of dynamically adjusting the shape of a guide surface, a film transfer device using a guide roller, and a sheet forming machine including the film transfer device.

The guide roller of the present invention (10: corresponding reference numerals in the embodiment, the same hereinafter) includes: a first cylindrical body (12) having a first axis (AX1), and a second axis having a first axis (AX2) is housed in the second cylindrical body (14) of the first cylindrical body, and the first cylindrical body has a plurality of slits (SL1 to SL3) on the outer peripheral surface (PR11) of the first cylindrical body, The two cylinders have a hollow portion from the outer circumferential surface (PR21) of the second cylindrical body to the second cylindrical body at a position avoiding the plurality of slits when viewed from the radial direction of the second cylindrical body (MD2) ) a plurality of holes (HL1a~HL3a, HL1b~HL3b).

Preferably, each of the plurality of slits has a shorter length than the entire length of the first cylindrical body, and is formed at a position different from each other in the axial direction and/or the circumferential direction of the first axis along the first axis.

Preferably, the second cylindrical body further has a plurality of annular grooves (GR1a to GR3a, GR1b to GR3b) formed on the outer circumferential surface of the second cylindrical body so as to surround the plurality of holes, respectively, and further includes plural and plural A plurality of ring members (16, 16, ...) into which the annular grooves are fitted.

Further preferably, each of the ring members is disposed at a position avoiding a plurality of slits of the first cylindrical body when viewed from a radial direction of the second cylindrical body.

The film conveying device (40) of the present invention includes a winding portion (42) for feeding a belt-shaped carrier film (36), a conveying portion (44) for conveying the carrier film, and a roll for winding the carrier film into a roll shape. a winding portion (46), wherein the conveying portion includes the guide roller, one of a pair of first cylindrical bodies and a second cylindrical body attached to the guide roller, and a journal (18, 20) Pair of pairs a journal supporting the mechanism (24, 26) for rotating the guide roller about the first axis, and supplying or discharging the fluid to the second of the guide roller via at least one of the pair of journals A fluid supply and discharge mechanism (28) of a hollow portion of the cylindrical body.

Preferably, at least one of the pair of journals has a supply/discharge passage (AS1) that communicates with a hollow portion of the second cylindrical body of the conductor roller.

The sheet forming machine (30) of the present invention is for forming a sheet on the surface of a belt-shaped carrier film (36), and the sheet forming machine (30) is included in the conveyance in addition to the film conveying device (40). A coating device (50) for applying a slurry (34) to the surface of the carrier film, and a drying device (60) for drying the slurry applied to the carrier film.

The second cylindrical body is housed in the first cylindrical body, and a plurality of slits are formed on the outer circumferential surface of the first cylindrical body, and the position of the second cylindrical body avoiding the plurality of slits when viewed from the radial direction A plurality of holes are formed from the outer peripheral surface thereof to the hollow portion thereof. Therefore, if the fluid pressure in the hollow portion of the second cylindrical body changes, the outer peripheral surface of the first cylindrical body is deformed in the radial direction. The shape of the guide surface can be dynamically adjusted by controlling the fluid pressure in the hollow portion of the second cylindrical body.

The above and other objects, features and advantages of the present invention will become more apparent from

10‧‧‧ Guide roller

12‧‧‧Outer roller (first cylinder)

14‧‧‧Inner roller (second cylinder)

16‧‧‧O-ring (ring member)

17‧‧‧ Cover

18‧‧‧ journal

20‧‧‧ journal

22‧‧‧Rotary joints

24, 26‧‧‧Support institutions

28‧‧‧Fluid supply and discharge mechanism

28a‧‧‧Pipe

28b‧‧‧Pressure adjustment valve

28c‧‧‧ Fluid source

30‧‧‧Sheet Forming Machine

32‧‧‧die

34‧‧‧Slurry

36‧‧‧ carrying film (transported)

40‧‧‧film conveying device

42‧‧‧Devolution

44‧‧‧Transportation Department

46‧‧‧Winding Department

50‧‧‧ Coating device

60‧‧‧Drying device

AS1‧‧‧ supply and exhaust

AS2‧‧‧ supply and exhaust

AX1‧‧‧ first axis

AX2‧‧‧ second axis

GR‧‧‧ annular groove

GR1~GR3‧‧‧ annular groove

GR1a~GR3a‧‧‧ annular groove

GR1b~GR3b‧‧‧ annular groove

HL‧‧ hole

HL1~HL3‧‧‧ hole

HL1a~HL3a‧‧‧ hole

HL1b~HL3b‧‧‧ hole

HZ1‧‧‧ area

HZ2‧‧‧ area

HZ3‧‧‧ area

MD1‧‧‧ Hollow

MD2‧‧‧ Hollow

OP1‧‧‧ openings

PR11‧‧‧ outer perimeter

PR12‧‧‧ inner circumference

PR21‧‧‧ outer perimeter

PR22‧‧‧ inner circumference

SL‧‧‧Slit

SL1‧‧‧ slit

SL2‧‧‧ slit

SL3‧‧‧ slit

SZ1‧‧‧ area

SZ2‧‧‧ area

SZ3‧‧‧ area

Fig. 1 is a perspective view showing an example of a guide roller of the present invention.

Fig. 2(A) is a perspective view showing an example of a roller constituting a guide roller, and Fig. 2(B) is a perspective view showing an example of an inner roller housed in a hollow portion of the outer roller.

Fig. 3(A) is a plan view showing an example of an O-ring which is fitted to a plurality of annular grooves formed on the outer circumferential surface of the inner roller, and Fig. 3(B) shows an example of a fitting state of the O-ring. Graphical diagram.

Figure 4 (A) is a perspective view showing an example of a journal attached to one end of the outer roller and the inner roller, Fig. 4(B) is a perspective view showing an example of another journal attached to the other end of the outer roller and the inner roller, and Fig. 4(C) is a perspective view showing an example of a rotary joint attached to one journal.

Figure 5 is a cross-sectional view taken along the line A-A of the guide roller shown in Figure 1.

Fig. 6(A) is a cross-sectional view showing the shape of the outer roller when the air pressure of the hollow portion provided in the inner roller is matched with the atmospheric pressure, and Fig. 6(B) is a view showing that the air pressure of the hollow portion provided in the inner roller is higher than that of the outer roller. A cross-sectional view of the shape of the roller at atmospheric pressure.

Fig. 7 is a schematic view showing the main part of a sheet forming machine using the guide rolls shown in Fig. 1.

Fig. 8 is a schematic view showing an example of a structure in which the guide roller shown in Fig. 1 is supported by a support mechanism and the fluid supply and discharge mechanism is connected to the guide roller.

Fig. 9 is a schematic view showing an example of a configuration of a film conveying device and a coating device to which the guide rolls shown in Fig. 1 are attached.

Fig. 1 shows the appearance of the guide roller 10 of this embodiment. The guide roller 10 is composed of an outer roller 12 and an inner roller 14 as shown in Figs. 2(A) and 2(B), respectively. The O-ring 16 shown in Fig. 3(A) is attached to the inner roller 14. The journals 18, 20 and the rotary joint 22 shown in Figs. 4(A) to 4(C) are attached to the guide roller 10, respectively. The outer roller 12 and the inner roller 14 are fixed by the journals 18 and 20, respectively, and rotate together in the circumferential direction.

Referring to Fig. 2(A), the outer roller 12 has a cylindrical shape along the axis AX1. The outer roller 12 is made of, for example, stainless steel, aluminum, iron or resin. The outer roller 12 has a total length of several hundred mm, and the outer roller 12 has a wall thickness ranging from several mm to several tens of mm. The outer diameter of the outer roller 12 is defined by the outer circumferential surface PR11 of the outer roller 12, and the inner diameter of the outer roller 12 is defined by the inner circumferential surface PR12 of the outer roller. The inner side of the inner peripheral surface PR12 is a hollow portion MD1. Further, in a state where no external force is applied to the outer roller 12, the outer diameter of the outer roller 12 assumes a single value, and the inner diameter of the outer roller 12 also exhibits a single value. At this time, the outer peripheral surface PR11 and the inner peripheral surface PR12 are both flat surfaces and are parallel to the axial direction.

In the outer roller 12, the central portion of the axial direction is provided with the region SZ1, and the one end portion is allocated to the region In the domain SZ2, the area SZ3 is allocated to the other end side. Here, the area SZ1 partially overlaps each of the areas SZ2 and SZ3. The region SZ1 is preferably symmetrical with respect to the center of the axial direction of the outer roller 12. Further, the region SZ2 is preferably located at a position where the center of the outer roller 12 is symmetrical with respect to the region SZ3.

The outer peripheral surface PR11 is provided with six slits SL1 extending along the axis AX1 in the region SZ1, and the outer peripheral surface PR11 is provided with six slits SL2 extending along the axis AX1 in the region SZ2, and the outer peripheral surface PR11 in the region SZ3 Six slits SL3 extending along the axis AX1 are provided. The length of each of the slits SL1, SL2, and SL3 is shorter than the entire length of the outer roller 12. The width of each of the slits SL1, SL2, and SL3 is set to, for example, a suitable value of 0.03 mm to 2 mm. Hereinafter, the slits SL1, SL2, and SL3 are collectively referred to as "slit SL".

The slit SL is radially disposed with respect to the axis AX1 when the slit SL is viewed from the axial direction of the outer roller 12. Specifically, the slits SL1 are provided at intervals of 60° at the same angular interval, and the slits SL2 are also provided at intervals of 60° at the same angular interval, and the slits SL3 are also provided at intervals of the same angle every 60°. Here, a 30° offset is ensured between the position where the slit SL1 is formed and the position where the slit SL2 is formed, and a 30° offset is also ensured between the position where the slit SL1 is formed and the position where the slit SL3 is formed. That is, the slit SL1 and the slit SL2 are formed to have an angular difference of 30° around the axis AX1, and the slit SL1 and the slit SL3 are also formed to have an angular difference of 30°.

Therefore, although the regions SZ1 to SZ3 partially overlap each other, the slits SL are formed on the outer peripheral surface PR11 so as not to contact each other. That is, the slits SL are provided at positions different from each other in the axial direction and/or the circumferential direction of the axis AX1. Moreover, when the outer roller 12 is observed from the radial direction, each of the slits SL is formed at a position that does not overlap with the annular groove GR described below.

The shape of the guide surface of the guide roller 10 can be adjusted by appropriately designing the length, the width, the depth, or the number of slits SL of the slits SL.

Referring to Fig. 2(B), the inner roller 14 has a cylindrical shape along the axis AX2. The inner roller 14 is made of, for example, stainless steel, aluminum, iron or resin. The entire length of the inner roller 14 and the full length of the outer roller 12 Similarly, the wall thickness of the inner roller 14 is in the range of several mm to several tens of mm. However, the outer diameter of the inner roller 14 is a few mm smaller than the inner diameter of the outer roller 12.

The outer diameter of the inner roller 14 is defined by the outer circumferential surface PR21 of the inner roller 14, and the inner diameter of the inner roller 14 is defined by the inner circumferential surface PR22 of the inner roller 14. Further, the outer diameter and the inner diameter of the inner roller 14 are each a single value, and the outer circumferential surface PR21 and the inner circumferential surface PR22 are both flat surfaces and are parallel to the axial direction.

In the inner roller 14, a region HZ1 is disposed in the axial center portion, a region HZ2 is assigned to the one end side, and a region HZ3 is allocated to the other end side. The region HZ1 is preferably symmetrical with respect to the center of the axial direction of the inner roller 14. The region HZ2 is preferably located at a position symmetrical with the region HZ3 with respect to the center of the axial direction of the inner roller 14. When the inner roller 14 is housed in the hollow portion MD1 of the outer roller 12 so that the axis AX2 and the axis AX1 overlap, and the both ends of the inner roller 14 are aligned with the both ends of the outer roller 12, the region HZ1 is observed from the radial direction. ~HZ3 coincides with the regions SZ1~SZ3. Specifically, the region HZ1 is completely covered by the region SZ1, the region HZ2 is completely covered by the region SZ2, and the region HZ3 is completely covered by the region SZ3.

Six holes HL1a and six holes HL1b are provided in the area HZ1. The hole HL1a and the hole HL1b are provided to penetrate the outer peripheral surface PR21 and the hollow portion MD2. Hereinafter, the holes HL1a and HL1b are collectively referred to as "hole HL1".

The hole HL1 is radially disposed with respect to the axis AX2 when the hole HL1 is viewed from the axial direction of the inner roller 14. Specifically, the holes HL1a are provided at intervals of 60° at the same angular interval, and the holes HL1b are also provided at intervals of the same angle every 60°. The offset between the formation position of the hole HL1a and the formation position of the hole HL1b is 0°. That is, the angle difference between the hole HL1a and the hole HL1b is 0° around the axis AX2.

Each of the holes HL1a is surrounded by each of the annular grooves GR1a, and each of the holes HL1b is also surrounded by each of the annular grooves GR1b. Two holes HL1a and HL1b adjacent in the axial direction are disposed at an appropriate distance, and two annular grooves GR1a and GR1b adjacent in the axial direction are also disposed at positions that do not coincide with each other.

Further, the angle between the two ends of the annular groove GR1a in the circumferential direction of the axis AX2 and the axis AX2 is less than 60°, and the angle between the two ends of the annular groove GR1b in the circumferential direction of the axis AX2 and the axis AX2 is also less than 60°. . Therefore, the two annular grooves GR1a adjacent to each other in the circumferential direction of the axis AX2 do not overlap each other, and the two annular grooves GR1b adjacent to each other in the circumferential direction of the axis AX2 do not coincide with each other. Hereinafter, the annular grooves GR1a and GR1b are collectively referred to as "GR1".

Six holes HL2a and six holes HL2b are provided in the area HZ2. The hole HL2a and the hole HL2b are provided to penetrate the outer peripheral surface PR21 and the hollow portion MD2. The hole HL2a and the hole HL2b are arranged side by side in the axial direction. Hereinafter, the holes HL2a and HL2b are collectively referred to as "hole HL2".

When the hole HL2 is seen from the axial direction of the inner roller 14, the hole HL2 is radially arranged with respect to the axis AX2. Specifically, the holes HL2a are provided at intervals of 60° at the same angular interval, and the holes HL2b are also provided at intervals of the same angle every 60°. The offset between the formation position of the hole HL2a and the formation position of the hole HL2b is 0°. That is, the angle difference between the hole HL2a and the hole HL2b is 0° around the axis AX2.

Each of the holes HL2a is surrounded by each annular groove GR2a, and each of the holes HL2b is also surrounded by each annular groove GR2b. Two holes HL2a and HL2b adjacent in the axial direction are disposed at an appropriate distance, and two annular grooves GR2a and GR2b adjacent in the axial direction are also disposed at positions that do not coincide with each other.

Further, the angle between the two ends of the annular groove GR2a in the circumferential direction of the axis AX2 and the axis AX2 is less than 60°, and the angle between the two ends of the annular groove GR2b in the circumferential direction of the axis AX2 and the axis AX2 is also less than 60°. . Therefore, the two annular grooves GR2a adjacent to each other in the circumferential direction of the axis AX2 do not overlap each other, and the two annular grooves GR2b adjacent to each other in the circumferential direction of the axis AX2 do not coincide with each other. Hereinafter, the annular grooves GR2a and GR2b are collectively referred to as "GR2".

Six holes HL3a and six holes HL3b are provided in the area HZ3. The hole HL3a and the hole HL3b are provided to penetrate the outer peripheral surface PR21 and the hollow portion MD2. The hole HL3a and the hole HL3b are arranged side by side in the axial direction. Hereinafter, the holes HL3a and HL3b are collectively referred to as "hole HL3", and the holes HL1, HL2, and HL3 are collectively referred to as "hole HL".

When the hole HL3 is seen from the axial direction of the inner roller 14, the hole HL3 is radially disposed with respect to the axis AX2. Specifically, the holes HL3a are provided at intervals of 60° at the same angular interval, and the holes HL3b are also provided at intervals of the same angle every 60°. Further, the offset between the formation position of the hole HL3a and the formation position of the hole HL3b is 0°. That is, the angle difference between the hole HL3a and the hole HL3b is 0° around the axis AX2.

Each of the holes HL3a is surrounded by the annular groove GR3a, and each of the holes HL3b is also surrounded by the annular groove GR3b. Two holes HL3a and HL3b adjacent in the axial direction are disposed at an appropriate distance, and two annular grooves GR3a and GR3b adjacent in the axial direction are also disposed at positions that do not coincide with each other.

Further, the angle between the two ends of the annular groove GR3a in the circumferential direction of the axis AX2 and the axis AX2 is less than 60°, and the angle between the two ends of the annular groove GR3b in the circumferential direction of the axis AX2 and the axis AX2 is also less than 60°. . Therefore, the two annular grooves GR3a adjacent to each other in the circumferential direction of the axis AX2 do not overlap each other, and the two annular grooves GR3b adjacent to each other in the circumferential direction of the axis AX2 do not coincide with each other. Hereinafter, the annular grooves GR3a and GR3b are collectively referred to as "GR3".

A 30° offset is ensured between the formation position of the hole HL1 and the formation position of the hole HL2. Similarly, a 30° offset is ensured between the formation position of the hole HL1 and the formation position of the hole HL3. That is, the hole HL1 and the hole HL2 are formed to have an angular difference of 30° around the axis AX2, and the hole HL1 and the hole HL3 are also formed to have an angular difference of 30°.

Therefore, when the inner roller 14 is accommodated in the hollow portion MD1 provided in the outer roller 12, the outer peripheral surface PR11 of the outer roller 12 is viewed from the radial direction, and the slit SL1 is located at a position avoiding the annular groove GR1, and the slit The SL2 is located away from the annular groove GR2, and the slit SL3 is located away from the annular groove GR3. Further, the slit SL1 is located at a position avoiding the annular groove GR2 and the annular groove GR3, and the slit SL2 and the slit SL3 are located at a position avoiding the annular groove GR1. Here, the annular grooves GR3a and GR3b are collectively referred to as "annular grooves GR3", and the annular grooves GR1, GR2, and GR3 are collectively referred to as "annular grooves GR".

Each of the annular grooves GR formed in the inner roller 14 is fitted to the O-ring 16 shown in Fig. 3(A). The O-ring 16 is made of an elastic resin, and the diameter of the ring constituting the O-ring 16 coincides with the diameter of the ring constituting each of the annular grooves GR. However, the depth of each annular groove GR is smaller than the thickness of the O-ring 16.

Therefore, when the O-ring 16 is fitted to each of the annular grooves GR, as shown in FIG. 3(B), the O-ring 16 partially protrudes from the outer peripheral surface PR21. The depth of each of the annular grooves GR and the thickness of the O-ring 16 are adjusted such that the height of the projection of the O-ring 16 exceeds the difference between the inner diameter of the outer roller 12 and the outer diameter of the inner roller 14.

The inner roller 14 is housed in the hollow portion MD1 of the outer roller 12 in a state in which the O-ring 16 is attached. At this time, the axis AX2 overlaps the axis AX1, and the O-ring 16 is reduced in deformation by the pressing force from the inner peripheral surface PR12 of the outer roller 14 (see FIG. 6(A)).

The journal 18 shown in Fig. 4(A) is attached to one of the axial ends of the outer roller 12 and the inner roller 14 by screws or the like. Further, the journal 20 shown in Fig. 4(B) is attached to the other end of the outer roller 12 and the inner roller 14 in the axial direction by screws or the like. Further, an annular cover 17 is attached to both ends of the outer roller 12, and the journals 18 and 20 are attached to the outer roller 12 via the cover 17. Further, the rotary joint 22 shown in Fig. 4(C) is provided at the front end of the journal 18. As shown in Fig. 8, the journals 18, 20 are supported by support mechanisms 24, 26 having bearings, and the guide roller 10 is rotatable in the circumferential direction of the axis AX1 and the axis AX2.

As shown in FIGS. 5 and 8, a fluid supply and discharge mechanism 28 is attached to the journal 18. The fluid supply and discharge mechanism 28 is composed of a pipe 28a, a pressure regulating valve 28b, and a fluid source 28c. One end of the inner roller 14 in the axial direction has an opening OP1 leading to the hollow portion MD2. Further, the journal 18 and the rotary joint 22 have supply and discharge passages AS1, AS2 leading to the opening OP1. On the other hand, the other end of the inner roller 14 in the axial direction is closed, and the journal 20 is solid.

When the compressed air is supplied to the inner roller 14 through the supply and discharge passages AS2 and AS1, the air pressure of the hollow portion MD2 rises. At this time, the pressure of the hollow portion MD2 is set to, for example, an appropriate value in the range of 0.01 MPa to 1 MPa. A portion of the supplied air is discharged to the outside of the inner roller 14 via the hole HL. However, since the periphery of each of the holes HL is sealed by the inner peripheral surface PR12 and the O-ring 16 of the outer roller 12, the discharged air stays in the closed space, so that the outer roller 12 is The pressure of the air in the confined space expands and deforms in the radial direction. The amount of expansion deformation of the diameter of the outer roller 12 is, for example, 0.0001 mm to 2 mm. At this time, the O-ring 16 is deformed in the recovery direction in accordance with the expansion deformation of the outer roller 12.

That is, when the air pressure of the hollow portion MD2 is equal to the atmospheric pressure, the outer roller 12 maintains its original shape, that is, the shape shown in Fig. 6(A). On the other hand, when the air pressure of the hollow portion MD2 rises, the outer roller 12 is expanded and deformed as shown in Fig. 6(B). Further, after the deformation is expanded, the outer roller 12 recovers the shape due to the return of the air pressure of the hollow portion MD2 to the atmospheric pressure.

Further, in this embodiment, the outer roller 12 is deformed by the air pressure, but the outer roller 12 may be changed by other fluid pressure such as oil pressure.

Further, in this embodiment, it is assumed that the outer roller 12 is enlarged and deformed, but the outer roller 12 may be contracted and deformed by reducing the pressure of the hollow portion MD2. At this time, the pressure of the hollow portion MD2 is set to, for example, an appropriate value in the range of -0.1 MPa to -0.01 MPa.

Alternatively, the outer diameter of the central portion may be smaller than the end portion of the outer roller 12 in a state where no external force is applied to the outer roller 12, and the outer diameter may be parallel to the axial direction by increasing the air pressure of the hollow portion MD2. Deformation. In this case, the outer diameter of the central portion is reduced and deformed by returning the air pressure of the hollow portion MD2 to atmospheric pressure.

Further, the guide roller 10 having different outer diameters at both ends can be formed by making the position of the slit SL of the outer roller 12 different from the one end side and the other end side.

Further, in this embodiment, the single hollow portion MD2 is formed in the inner roller 14, but the hollow portion MD2 may be divided into two hollow portions by the partition wall, and by the other end of the inner roller 14 in the axial direction and the journal 20 The opening and the supply and exhaust passage are formed, and the air pressures of the two hollow portions are individually controlled. Thereby, more complicated control of the shape of the outer roller 12 can be achieved.

Further, the outer peripheral surface PR11 of the outer roller 12 may be covered with a rubber tube or a resin coating. That is, the guide roller 10 can guide the carrier film 36 via a rubber tube or a resin coating provided on the outer peripheral surface PR11.

The guide roller 10 having such a structure is suitable for the sheet forming machine shown in FIGS. 7 and 9. 30. The sheet forming machine 30 includes a film conveying device 40 that conveys the belt-shaped carrier film 36, a coating device 50 that applies the slurry 34 to the carrier film 36 that is conveyed, and the applied slurry 34. Dry drying device 60. The film transfer device 40 includes a take-up portion 42 that feeds the carrier film 36 from the support roller, a transfer portion 44 that transports the carrier film 36, and a winding portion 46 that winds the carrier film 36 in a roll shape. The transport path of the carrier film 36 has a pair of discharge rollers 10 that guide the carrier film 36 to the discharge port 32 of the coating device 50. The invention is applied to at least one or both of the guide rolls 10. Further, the drying device 60, the winding portion 42, and the winding portion 46 are configured by a known technique, and detailed description thereof will be omitted.

According to Fig. 7, the guide roller 10 is provided on each of the upstream and downstream of the transport path for transporting the carrier film 36. The outer peripheral surface PR11 of the roller 12 outside the guide roller 10 abuts against one main surface of the carrier film 36. The two guide rollers 10 are rotated in the clockwise direction (arrow direction), and the carrier film 36 is transported from the upstream to the downstream in the transport path.

The die 32 from which the slurry 34 is discharged is disposed between the two guide rolls 10. The front end of the die 32 abuts against the other main surface of the carrier film 36, whereby the slurry 34 is applied to the other main surface of the carrier film 36.

The thickness of the coating film may be uneven in the width direction of the carrier film 36, and the outer roller 12 may be deformed according to the air pressure provided in the hollow portion MD2 of the inner roller 14, thereby causing the carrier film to be conveyed in the conveying path. A wavy deformation is also produced on the main surface of 36. In the present embodiment, the slurry 34 is applied to the carrier film 36 which is deformed in this manner. Therefore, the shape of the main surface of the carrier film 36 can be dynamically adjusted by controlling the gas pressure of the hollow portion MD2, and the coating film thickness in the width direction of the carrier film 36 can be dynamically adjusted.

Further, in the case where the present invention is applied to both of the pair of guide rolls 10, the pressure on the main surface of the carrier film 36 can be generated by making the air pressure of the hollow portion MD2 of each of the guide rolls 10 different. The deformation is complicated to control. Further, if the guide rolls 10 of different specifications are used as the pair of guide rolls 10, the deformation generated on the main surface of the carrier film 36 can be more complicatedly controlled.

Further, when the guide roller 10 is driven by the sheet forming machine 30, the coating can be measured immediately. The film thickness is such that the degree of deformation of the guide roller 10 is instantly controlled.

Further, in this embodiment, the guide roller 10 is applied to the sheet forming machine 30. However, the guide roller 10 of the present embodiment can also be applied to a production step of a substrate such as a printed matter, an optical film, a magnetic tape, a metal film, or the like, a process of transporting the substrates, and a process of transferring through the transfer and finally The film transport device 40 that is wound is performed.

For example, the application can adjust the outer diameters of the both ends to different guide rolls 10, and the conveyance position can be adjusted according to the curved travel of the carrier film 36.

12‧‧‧Outer roller (first cylinder)

14‧‧‧Inner roller (second cylinder)

AX1‧‧‧ first axis

AX2‧‧‧ second axis

GR1a~GR3a‧‧‧ annular groove

GR1b~GR3b‧‧‧ annular groove

HL1a~HL3a‧‧‧ hole

HL1b~HL3b‧‧‧ hole

HZ1‧‧‧ area

HZ2‧‧‧ area

HZ3‧‧‧ area

MD1‧‧‧ Hollow

PR11‧‧‧ outer perimeter

PR12‧‧‧ inner circumference

PR21‧‧‧ outer perimeter

SL1‧‧‧ slit

SL2‧‧‧ slit

SL3‧‧‧ slit

SZ1‧‧‧ area

SZ2‧‧‧ area

SZ3‧‧‧ area

Claims (7)

A guide roller comprising: a first cylindrical body having a first shaft; and a second cylindrical body having a second shaft coinciding with the first shaft and received in the first cylindrical body; the first The cylindrical body has a plurality of slits on the outer circumferential surface of the first cylindrical body; and the second cylindrical body has a self at a position avoiding the plurality of slits when viewed from a radial direction of the second cylindrical body The outer peripheral surface of the second cylindrical body passes through a plurality of holes in the hollow portion of the second cylindrical body. The guide roller of claim 1, wherein each of the plurality of slits has a shorter length than a total length of the first cylindrical body, and is formed along the first axis in an axial direction of the first axis and / or different positions in the circumferential direction. The guide roller of claim 1 or 2, wherein the second cylindrical body further has a plurality of annular grooves formed on the outer circumferential surface of the second cylindrical body so as to surround the plurality of holes, respectively, and further includes a plurality of ring members that are fitted to the plurality of annular grooves. The guide roller of claim 3, wherein each of the plurality of ring members is disposed at a position avoiding the plurality of slits of the first cylindrical body when viewed from a radial direction of the second cylindrical body. A film conveying device comprising: a winding portion for feeding a belt-shaped carrier film; a conveying portion for conveying the carrier film; and a winding portion for winding the carrier film into a roll; the conveying portion comprising: a guide roller according to any one of 1 to 4; a pair of journals of the first cylindrical body and the second cylindrical body attached to the guide roller; a support mechanism for supporting the pair of journals by rotating the guide roller around the first shaft; and supplying or discharging the fluid to the guide roller via at least one of the pair of journals a fluid supply and discharge mechanism of the hollow portion of the second cylindrical body. The film transporting device of claim 5, wherein at least one of the pair of journals has a supply/discharge passage that communicates with a hollow portion of the second cylindrical body of the guide roller. A sheet forming machine for forming a sheet on a surface of a belt-shaped carrier film, in addition to the film conveying device of claim 5 or 6, comprising: coating a surface of the carrier film which is conveyed a coating device; and a drying device for drying the slurry coated on the carrier film.