JP2008273723A - Suction roll and suction roll device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction roll and a suction roll device reduced in the diameter of a suction opening by improving the accuracy of circularity and cylindricality of the suction roll and the fluctuation accuracy. <P>SOLUTION: A suction roll 2 is structured of a suction roll outer cylinder 11, wherein the negative pressure is supplied to a sealed space 12. The suction roll cylinder 11 is formed into a cylindrical shape, and provided with a plurality of installation openings 14 on the peripheral surface thereof. A suction member (single tube) is fitted on a peripheral surface side of the installation hole 14 of the suction roll cylinder 11. Length of the suction member is formed shorter than plate thickness of the suction roll cylinder 11, and provided with a suction opening passing through the longitudinal direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a suction roll that transports a resin film or sheet while sucking it, and a suction roll device that uses this suction roll.

  In general, a suction roll device is used in a resin film or sheet manufacturing apparatus and a surface processing apparatus. A suction roll device is a film in which a plurality of suction ports are bored in a uniform distribution in a rotatable cylindrical roll body constituting the suction roll, and negative pressure is supplied to the suction ports to generate suction force in the roll body. Aspirate and transfer. Usually, a shielding member (negative pressure region regulating member) is provided in non-contact with the suction roll, and a predetermined rotation angle range of the suction roll is set as a suction action region.

  By the way, in the suction roll device, if the suction port / suction surface on the outer peripheral surface of the suction roll is discontinuous, unevenness of tension occurs in the film to be transferred. For this reason, fluctuations in the adsorption force of the film, variations in the transfer speed, and floating phenomena on the adsorption surface have occurred, making it difficult to transfer with high accuracy. In order to solve this, it has been proposed to form a suction port by punching a punching metal of a metal plate material and provide a tapered surface that expands toward the outer peripheral surface side of the suction hole. This is described, for example, in Patent Document 1 below.

JP 2004-189454 A

  Suction rolls for transporting plastic films according to the prior art are those in which a cylindrical net with a fine hole drilled or a cylindrical punching metal is mounted on the outer peripheral surface from the viewpoint of preventing adhesion of an adsorption mark to the transport material. . The net and punching metal on the cylinder is a thin plate with a thickness of about 0.4 mm and cannot be polished. Therefore, it is not possible to manufacture a high-precision suction roll with roundness, cylindricity and runout accuracy of 50 μm or less. was there.

  Also, in recent years, attempts have been made to dramatically improve productivity by improving the conventional batch type production system to a roll-to-roll type production system, and a suction roll and a suction roll device capable of high precision transfer have been developed. It has been demanded. Further, when the roundness / cylindricity of the suction roll and the roll accuracy of the shake are lowered, the flatness of the film adsorbed on the suction roll is lowered. For this reason, for example, if a direct drawing is attempted on the film during the transfer process using a suction roll, the drawing position is shifted.

  On the other hand, when the plate thickness of the suction roll is increased to enable polishing, it is difficult to reduce the diameter of the suction port because the diameter of the suction port is substantially proportional to the plate thickness.

  As described above, the conventional technique has a problem in that the roundness and cylindricity of the suction roll and the accuracy of deflection cannot be increased and the diameter of the suction port cannot be reduced.

  An object of the present invention is to provide a suction roll and a suction roll device that can increase the roundness / cylindricity and the accuracy of deflection of the suction roll and reduce the diameter of the suction port.

  The suction roll of the present invention is a suction in which a negative pressure is supplied to a sealed space in which both cylindrical openings are sealed by side plates connected to the end of a rotating shaft, and a plurality of mounting ports are formed in the peripheral surface. And a suction member that is formed in a cylindrical shape whose length is shorter than the plate thickness of the suction roll cylinder and is provided with a suction port that penetrates in the length direction. The peripheral surface side is formed so as to be located in the negative pressure region, and the suction member is configured to be fitted and fixed to the outer peripheral surface side of the mounting hole formed in the suction roll outer cylinder.

Other suction rolls of the present invention are supplied with negative pressure in a sealed space in which both cylindrical openings are sealed by side plates connected to the end of the rotation shaft, and a plurality of through holes are formed in the peripheral surface. An inner cylinder of the suction roll, a suction roll outer cylinder that is configured to surround the inner cylinder of the suction roll and that has a plurality of mounting holes formed in the peripheral surface, and a plate of the suction roll outer cylinder A suction member having a suction port that is formed in a columnar shape that is shorter than the thickness and penetrates in the length direction. It has a negative pressure gap area formed with a groove, the suction roll inner cylinder and the suction roll outer cylinder are tightly fixed at both ends in the length direction, and the suction roll outer cylinder mounting hole has negative pressure on the inner peripheral surface side It is drilled to be located in the void area Suction member is constructed by fitting fixed to the outer peripheral surface side of the mounting hole bored in the suction roll barrel.

  Further, the suction roll device of the present invention includes the above-described suction roll, a negative pressure region regulating member provided in non-contact with the suction roll in order to set a predetermined rotation angle range of the suction roll as a suction working area, and a suction roll A first nip roll for guiding the film to the suction action area, and a second nip roll for feeding the film from the suction action area of the suction roll.

  The present invention is provided with a suction roll cylinder having a plurality of mounting holes perforated on the peripheral surface, and a suction port that is configured in a cylindrical shape having a length shorter than the thickness of the suction roll cylinder and penetrates in the length direction. The suction member is fitted and fixed to the outer peripheral surface side of the mounting hole formed in the suction roll cylinder. Since the thickness of the suction roll cylinder can be polished, the roundness, cylindricity and deflection accuracy of the suction roll can be increased to 5 μm or less, and the suction member has a fine hole pipe structure for suction. The diameter of the mouth can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall structural view showing an embodiment of the present invention partially broken, FIG. 2 is a sectional view of a suction roll, FIG. 3 is a partially enlarged view of a suction roll cylinder, FIG. 3 (b) is a longitudinal sectional view. In FIG. 1 and FIG. 2, the hatching of the cross section is omitted because it is difficult to understand because the illustration is fine.

  1 and 2, a suction roll device 1 includes a suction roll 2, rotary shafts 3 and 4, side plates 5 and 6 connected to shaft ends of the rotary shafts 3 and 4, and a negative pressure region regulating member of the suction roll 2. 7, a first nip roll 8 that guides the film 10 to the suction action area of the suction roll 2, and a second nip roll 9 that sends the film 10 from the suction action area of the suction roll 2.

  The suction roll 2 includes rotating shafts 3 and 4, side plates 5 and 6 connected to shaft ends of the rotating shafts 3 and 4, and a suction roll cylinder 11. The suction roll cylinder 11 is formed by sealing both cylindrical openings with side plates 5 and 6 connected to the shaft ends of the rotary shafts 3 and 4 to form a sealed space 12. The rotary shaft 4 is provided with an air flow path 13 for supplying a negative pressure to the sealed space 12. Negative pressure is supplied to the sealed space 12 from a negative pressure supply source (not shown) via the air flow path 13.

  A plurality of mounting openings 14 are formed in the peripheral surface of the suction roll cylinder 11. As shown in FIG. 3A, the plurality of mounting ports 14 are formed in a zigzag pattern with a uniform distribution. The suction roll cylinder 11 is fixed to the side plates 5 and 6 with bolts. As shown in FIG. 1, the mounting opening 14 of the suction roll outer cylinder 11 is formed so that the inner peripheral surface side is positioned in the negative pressure sealed space 12.

  As shown in FIG. 3B, a cylindrical suction member 15 is fitted and fixed to the outer peripheral surface side of the mounting opening 14 formed in the suction roll cylinder 11. The suction member 15 is fitted into and fixed to the mounting port 14 at a position coinciding with the outer peripheral surface of the suction roll cylinder 11. The suction member 15 has a columnar shape shorter than the thickness of the suction roll outer cylinder, and is provided with a suction port 16 penetrating in the length direction. The suction member 15 may be a cylindrical single tube.

  An example of the plate thickness of the suction roll cylinder 11, the diameter of the mounting port 14, the length of the suction member 15, and the diameter of the suction port 16 is as follows. The thickness of the suction roll cylinder 11 is 20 mm, the diameter of the mounting port 14 is 2.5 mm, the length of the suction member 15 is 5 mm, and the diameter of the suction port is 0.5 mm. It is said that the roundness, cylindricity, and deflection accuracy are 5 μm or less, and the thickness that can be polished with high accuracy is approximately 10 mm or more.

  In the lower part of the suction roll cylinder 11 (suction roll 2), a shielding member 7 is provided in non-contact with the suction roll 2 in order to set a predetermined rotation angle range as a suction action area. As shown in FIG. 2, the shielding member 7 is a negative pressure region regulating member that is divided into a suction working region B and a non-suction working region A. The shielding member 7 can be further improved in suction efficiency by being a contact driven belt type.

  The rotating shaft 3 is rotatably supported by a bearing 19 provided in the shaft box 17, and the rotating shaft 4 is rotatably supported by a bearing 20 provided in the shaft box 18. A rotary joint 21 for supplying a negative pressure to the sealed space 12 is provided at one end of the rotating shaft 4. One end of the rotating shaft 3 is connected to a drive motor 23 via a coupling 22. The suction roll 2 is directly driven by a drive motor 23.

  In this configuration, the suction roll 2 is rotationally driven by the drive motor 23. Further, negative pressure is supplied to the sealed space 12 of the suction roll cylinder 11 from a negative pressure supply source (not shown) via the air flow path 13. The negative pressure is supplied to the mounting port 14 of the suction roll cylinder 11, and the suction port 16 of the suction member 15 is set to a negative pressure. The film 10 is sucked and transferred by setting each suction port 16 formed in the suction member 15 to a negative pressure.

  In this way, the film is sucked and transferred, but since the thickness of the suction roll cylinder can be made large enough to be polished, the roundness and cylindricity of the suction roll and the accuracy of deflection can be increased to 5 μm or less, Moreover, since the structure of the suction member is a fine hole pipe structure, the diameter of the suction port can be reduced.

  In the above-described embodiment, a part of the lower portion of the suction roll is made a non-suction working area by a shielding member. Therefore, when the horizontal axis at the center of the suction roll is the X axis, the camera is set to 0 degree, 90 degrees, 180 degrees. By arranging in such a position, it is possible to produce an effect that it is possible to draw directly on the film.

  FIG. 4 is an overall configuration diagram showing another embodiment of the present invention partially broken, and FIG. 5 is a sectional view of the suction roll. 4 and 5, the hatching of the cross section is omitted because it is difficult to understand because the illustration is fine.

  4 and 5 is different from the first embodiment in that the suction roll 2 is provided with a suction roll inner cylinder 24 inside the suction roll cylinder 11. The suction roll cylinder 11 in the first embodiment is a suction roll outer cylinder 11. The suction roll outer cylinder 11 is disposed so as to surround the suction roll inner cylinder 24. In the suction roll inner cylinder 24, both cylindrical openings are sealed by side plates 5, 6 connected to the shaft ends of the rotary shafts 3, 4 to form a sealed space 25. Negative pressure is supplied to the sealed space 25 from a negative pressure supply source (not shown) via the air flow path 13 provided on the rotary shaft 4.

  The suction roll inner cylinder 24 has a plurality of through holes 26 formed in the circumferential surface. The suction roll inner cylinder 24 is provided with a circumferential groove on the entire circumference of the outer peripheral surface provided with the through-hole 26 to form a negative pressure gap region 27. The suction roll inner cylinder 24 and the suction roll outer cylinder 11 are fixed to the fixing flanges 28 and 29 with bolts.

  The suction roll outer cylinder 11 is tightly fixed to the suction roll inner cylinder 24 at both ends in the length direction. As shown in FIG. 4, the mounting opening 14 of the suction roll outer cylinder 11 is formed so that the inner peripheral surface side is positioned in the negative pressure gap region 27.

  In this configuration, negative pressure is supplied to the sealed space 25 of the suction roll inner cylinder 24 from a negative pressure supply source (not shown) via the air flow path 13. The negative pressure in the sealed space 25 is supplied through a plurality of through holes 26 to a negative pressure gap area 27 in a circumferential groove formed on the outer peripheral surface of the suction roll inner cylinder 24 over the entire circumference. The negative pressure in the negative pressure gap area 27 is supplied to the mounting port 14 of the suction roll outer cylinder 11 to make the suction port 16 of the suction member 15 have a negative pressure. Since the negative pressure is uniformly supplied to the negative pressure gap area 27 over the entire circumference, the negative pressures of the suction ports 16 formed in the plurality of suction members 15 are also uniform. The film 10 is sucked and transferred by setting each suction port 16 formed in the suction member 15 to a negative pressure.

  In this way, the film is sucked and transferred. As in Example 1, the thickness of the suction roll outer cylinder can be made so as to be polished, so that the roundness, cylindricity and vibration of the suction roll can be reduced. The accuracy can be as high as 5 μm or less, and since the structure of the suction member is a fine hole pipe structure, the diameter of the suction port can be reduced.

  In the second embodiment described above, the suction roll inner cylinder is provided to form the negative pressure gap region, so that the suction force of each suction port formed in the plurality of suction members is further increased in the width direction and the circumferential direction. Can be even.

It is the whole block diagram which fractured | ruptured partially which shows the 1st Example of this invention. It is sectional drawing of the suction roll in this invention. It is the elements on larger scale of the suction roll cylinder in the present invention. It is the whole block diagram which fractured | ruptured partially showing the 2nd Example of this invention. It is sectional drawing of the suction roll in the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction roll apparatus 2 Suction rolls 3, 4 Rotating shafts 5, 6 Side plate 7 Shielding member (negative pressure region regulating member)
8, 9 Nip roll 10 Film 11 Suction roll cylinder (Suction roll outer cylinder)
12, 25 Sealed space 13 Air flow path 14 Mounting port 15 Suction member (single pipe)
16 Suction port 17, 18 Shaft box 19, 20 Bearing 21 Rotary joint 22 Coupling 23 Drive motor 24 Suction roll inner cylinder 26 Through port 27 Negative pressure gap area 28, 29 Fixed flange

Claims (3)

  Suction roll outer cylinder in which both cylindrical openings are respectively sealed by side plates connected to the end of the rotation shaft, negative pressure is supplied to the sealed space, and a plurality of through holes are formed in the peripheral surface, and a cylindrical shape And a suction member in which a suction port penetrating in the length direction is formed, and the suction member is configured to be fitted and fixed to an outer peripheral surface side of a mounting hole formed in the suction roll cylinder. Suction roll characterized by being made.   Suction roll inner cylinder in which both cylindrical openings are sealed by side plates connected to the end of the rotating shaft, negative pressure is supplied to the sealed space, and a plurality of through holes are formed in the peripheral surface, and a cylindrical shape A suction roll outer cylinder that is configured to surround the inner cylinder of the suction roll and has a plurality of mounting holes formed in the peripheral surface thereof, and a column that is shorter than the plate thickness of the suction roll outer cylinder And a suction member having a suction port formed in a shape and penetrating in the length direction. The inner cylinder of the suction roll is formed by providing a groove on the entire outer periphery of the through-hole. The suction roll inner cylinder and the suction roll outer cylinder are closely fixed at both ends in the longitudinal direction, and the mounting hole of the suction roll outer cylinder has an inner peripheral surface side on the negative pressure gap. It is drilled to be located in the area Said suction member is a suction roll, characterized in that it is constituted by fitting fixed to the outer peripheral surface side of the mounting hole bored in the suction roll barrel.   The suction roll according to claim 1 or 2, a negative pressure region regulating member provided in a non-contact manner with the suction roll in order to set a predetermined rotation angle range of the suction roll as a suction action range, and the suction roll A suction roll apparatus comprising: a first nip roll that guides a film to the suction action area of the first and a second nip roll that feeds the film from the suction action area of the suction roll.

Images