JP2004189454A - Suction roll and suction roll device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction roll of simple structure capable of controlling the film thickness with high accuracy without causing irregular tension in a film to be transferred at low cost. <P>SOLUTION: In the suction roll 13, a punching metal 29 of a vent structure having a large number of through holes 31 in outer and inner circumferential surfaces is fitted to an outer circumferential surface of a suction roll body rotatable around the axis. The punching metal 29 is provided so that a tapered surface 33 expanded toward the outer circumferential surface generated when driving a punch is located on the outer circumferential surface side of each hole 31. When the negative pressure is fed from the suction roll body side to the punching metal 29, the outer circumferential surface of the punching metal 29 forms a suction surface 35 causing no irregular suction, and the tapered surface formed in each hole 31 suppresses the occurrence of suction marks. In addition, the structure is simple and the manufacturing cost is reduced. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction roll used in a device for manufacturing resin films and sheets, and a suction roll device using the suction roll, and more particularly to an improvement of a cylindrical multi-hole body forming a roll surface. .
[0002]
[Prior art]
In the conventional suction roll device, a large number of suction ports are formed in a rotatable cylindrical roll body constituting a suction roll in a uniform distribution, and a porous body having a large number of holes such as slits is fitted into each suction port, and the roll is rolled. A partition member is fixedly arranged inside the main body. By supplying the decompressed air to the suction port located in a required rotation angle range partitioned by the partition member, the porous body generates a suction force in the required rotation angle range and sucks the film to be transferred. (See, for example, Patent Document 1).
[0003]
Further, as another conventional suction roll device, a large number of air intake holes are formed in a rotatable cylindrical roll body constituting a suction roll, and a plurality of wires are appropriately spaced around the outer peripheral surface of the roll body. And is wound. Further, a partition member is fixedly arranged inside the roll body, and the reduced-pressure air is supplied to the intake holes located in the required rotation angle range partitioned by the partition member, so that in the required rotation angle range, The suction hole generates a suction force, and sucks and transfers the film to be transferred (for example, see Patent Document 2).
[0004]
Further, as another conventional suction roll device, a rotatable cylindrical roll body constituting a suction roll has a roll width in contact with a conveyed object such as a long sheet, and is disposed in the roll width direction. A plurality of slits communicating with the ventilation chambers arranged radially with respect to the rotating shaft are formed in the cylindrical body, and each slit is opened in the surface of the cylindrical body. Further, an exhaust chamber provided with an exhaust hole located in a required rotation angle range is provided on a side surface of the cylindrical body. Depressurized air is supplied to the located slit, and the slit generates a suction force within a required rotation angle range, and sucks and transfers the film to be transferred. On the surface side of the slit of the cylindrical body, a fine filament wire such as stainless steel is wound substantially orthogonally to the slit with a gap provided at regular intervals (for example, see Patent Document 3).
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 6-20771 (Page 3, column 5, line 6 to column 6, line 19, FIG. 1A, FIG. 1B)
[0006]
[Patent Document 2]
Patent No. 2650890 ([0008] to [0010], FIGS. 1 to 3)
[0007]
[Patent Document 3]
Japanese Patent No. 2831226 ([0009] to [0012], FIGS. 1 to 3)
[0008]
[Problems to be solved by the invention]
Incidentally, in the above-described various conventional suction roll devices, if the suction surface (suction port) on the outer peripheral surface of the roll is discontinuous particularly in the roll rotation direction (roll circumferential direction), tension unevenness occurs in the film to be transferred. In addition, since it is not possible to obtain highly accurate film thickness and the like, it is difficult to form a suction port, and in any case, the structure is complicated, so that the manufacturing cost is increased.
[0009]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a film which can be smoothly transported without causing tension unevenness in the film to be transported, and which has a simple structure and can be manufactured. An object of the present invention is to provide a suction roll capable of reducing the cost and a suction roll device using the suction roll.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a suction roll according to the present invention according to claim 1 is provided with a suction roll main body rotatably provided around its own central axis, and mounted on an outer peripheral surface of the suction roll main body to form the suction roll main body. And a cylindrical multi-hole body having a ventilation structure to which a negative pressure is given from the side of the suction roll main body by the provided negative pressure supply passage,
The cylindrical multi-hole body is formed of a punching metal formed by punching a plurality of holes penetrating an outer peripheral surface and an inner peripheral surface by punching a metal plate material, and is generated when the punch is driven into the outer peripheral surface side of each hole. It is characterized in that it is provided so that a tapered surface extending toward the outer peripheral surface is located.
[0011]
Therefore, it is possible to manufacture the cylindrical multi-hole body at low cost by using a commercially available punching metal, and it is possible to obtain one having a high hole density, so that a suction surface free from uneven tension can be obtained. At this time, it is possible to prevent a suction mark from being generated by each hole only by providing each hole such that a tapered surface which expands toward the outer peripheral surface generated at the time of punching is located on the outer peripheral surface side.
[0012]
According to a second aspect of the present invention, there is provided the suction roll according to the first aspect, wherein a plating portion is provided on a surface of each of the holes so as to reduce an inner diameter of each of the holes.
[0013]
Therefore, since the plated portion is provided on the surface of the hole, the inside diameter of each hole becomes a smaller diameter hole beyond the area of the small diameter hole obtained by punching, and the small diameter holes are arranged innumerably and uniformly.
[0014]
According to a third aspect of the present invention, in the suction roll according to the first or second aspect, the punching metal has a double structure of an outer punching metal and an inner punching metal, and the outer punching metal has an inner punching metal. It is characterized by having a smaller diameter hole than metal.
[0015]
Therefore, since many small-diameter holes are provided in the outer punching metal, a more uniform suction is performed, and a desired opening ratio is obtained by a combination of the opening ratios of the two punching metals. Reinforced by punching metal.
[0016]
A suction roll device according to a fourth aspect of the present invention includes a suction roll body rotatably provided around its own central axis, and a negative pressure mounted on the outer peripheral surface of the suction roll body and formed on the suction roll body. A cylindrical multi-hole body having a ventilation structure to which a negative pressure is applied from the side of the suction roll main body by a supply passage; and a non-contact with the suction roll main body so that only a predetermined rotation angle range of the cylindrical multi-hole body is set as a suction operation area. And a negative pressure range restricting means for restricting the negative pressure range with a suction roll device comprising:
The cylindrical multi-hole body is formed of a punching metal formed by punching a plurality of holes penetrating an outer peripheral surface and an inner peripheral surface by punching a metal plate material, and is generated when the punch is driven into the outer peripheral surface side of each hole. It is characterized in that it is provided so that a tapered surface extending toward the outer peripheral surface is located.
[0017]
Accordingly, a punched metal constituting a cylindrical multi-hole body is commercially available with a high hole density, and a suction surface without tension unevenness can be easily obtained. At this time, it is possible to prevent a suction mark from being generated by each hole only by providing each hole such that a tapered surface which expands toward the outer peripheral surface generated at the time of punching is located on the outer peripheral surface side. As a result, in the suction action area in which the negative pressure area is restricted by the negative pressure area restricting means, the above-described punching metal allows the film to be transported smoothly and uniformly in the roll rotation direction. Further, the structure of the entire apparatus is simple and the manufacturing cost is low.
[0018]
According to a fifth aspect of the present invention, there is provided the suction roll device according to the fourth aspect, wherein a plating portion is provided on a surface of each of the holes so as to reduce an inner diameter of each of the holes. .
[0019]
Therefore, since the plated portion is provided on the surface of the hole, the inside diameter of each hole becomes a smaller diameter hole beyond the area of the small diameter hole obtained by punching, and the small diameter holes are arranged innumerably and uniformly.
[0020]
The suction roll device of the present invention according to claim 6 is the suction roll device according to claim 4 or 5, wherein the punching metal has a double structure of an outer punching metal and an inner punching metal, and It is characterized by having a smaller diameter hole than the inner punching metal.
[0021]
Therefore, since many small-diameter holes are provided in the outer punching metal, a more uniform suction is performed, and a desired opening ratio is obtained by a combination of the opening ratios of the two punching metals. Reinforced by punching metal.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
2 and 3, a suction roll device 1 according to this embodiment has a machine frame 3 in a fixed arrangement. The machine frame 3 rotatably supports the shaft portions 17 and 19 at both ends of a suction roll body 15 constituting a suction roll 13 by rolling bearing members 9 and 11 attached to brackets 5 and 7. Thereby, the suction roll main body 15 is rotatable around its own central axis.
[0024]
The suction roll body 15 includes a roll portion 21 having a cylindrical shape, and side plate portions 23 and 25 having both ends of the roll portion 21 and the shaft portions 17 and 19 closed. The in-cylinder space portion 27 is defined. The side plates 23 and 25 are hermetically mounted on the roll 21 by bolts BT via, for example, packing (not shown).
[0025]
1A to 1C, a commercially available punching metal 29 as a cylindrical multi-hole body is fitted and mounted on the outer peripheral surface of the suction roll body 15. The punching metal 29 has a plate thickness of, for example, 0.4 mm, and a large number of holes 31 penetrating the outer peripheral surface and the inner peripheral surface of the punching metal 29 at high density. Each of the holes 31 has a diameter of about 0.5 mm and a pitch of 1 mm, and a tapered surface 33 extending toward the outer peripheral surface is provided on the outer peripheral surface side of each hole 31. The tapered surface 33 is formed by punching when the hole 31 is punched. Therefore, the above-described cylindrical punching metal 29 has a suction surface (outer peripheral surface) 35 that is substantially continuous not only in the width direction but also in the circumferential direction (the rotation direction of the suction roll main body 15). The material of the punching metal 29 is not particularly limited, but stainless steel or a rolled steel plate is used.
[0026]
Referring again to FIGS. 1 and 2, on the outer peripheral surface of the suction roll body 15, a negative pressure supply passage for the punching metal 29 is formed continuously around the entire outer peripheral surface, and the inner peripheral surface 37 of the punching metal 29 is formed. A plurality of circumferential grooves 39 which are directly open toward the front are formed. A plurality of the circumferential grooves 39 are provided at equal intervals in the axial direction of the suction roll main body 15, each of the circumferential grooves 39 is formed relatively wide, and a narrow rib 41 is provided between the circumferential grooves 39 adjacent to each other. The inner peripheral surface 37 of the punching metal 29 is supported by the plurality of ribs 41.
[0027]
In addition, a plurality of through holes 43 that communicate the peripheral groove 39 and the in-cylinder space 27 are formed through the bottom surface of each peripheral groove 39 at substantially equal intervals in the circumferential direction of the peripheral groove 39.
[0028]
A non-contact rotary joint 45 for supplying a negative pressure from the outside to the in-cylinder space 27 is provided at one end of the suction roll main body 15. The rotary joint 45 has a fixed sleeve 49 fixed to a joint bracket 47 fixed to the machine frame 3.
[0029]
The fixed sleeve 49 receives the extended shaft portion 51 extended from one end of the suction roll body 15, forms a minute gap 53 with the extended shaft portion 51, and is in non-contact. A negative pressure supply port 55 to which a negative pressure is supplied from a negative pressure supply source (not shown) is formed in the joint bracket 47 and the fixed sleeve 49.
[0030]
The negative pressure supply port 55 is open on the inner peripheral surface of the fixed sleeve 49, and a peripheral groove 57 is formed on the outer peripheral surface at an axial position where the extension shaft portion 51 is axially aligned with the negative pressure supply port 55. ing. A radial passage 59 and an axial passage 61 communicating with the peripheral groove 57 are formed in the extended shaft portion 51, and the peripheral groove 57 communicates with the in-cylinder space 27 by these passages.
[0031]
The negative pressure from the negative pressure supply source is introduced into the in-cylinder space 27 through the negative pressure supply port 55, the circumferential groove 57, the radial passage 59, and the axial passage 61, and the through-hole 43 is formed through the in-cylinder space 27. After that, it is supplied to each circumferential groove 39. Thereby, a negative pressure is applied to the punching metal 29, and the entire outer peripheral surface 35 of the punching metal 29 becomes a suction surface.
[0032]
Further, the machine frame 3 is provided with, for example, a shielding member 63 as a negative pressure region restricting means for restricting the negative pressure region in a non-contact manner with the suction roll body 15 so that only the predetermined rotation angle range of the punching metal 29 is set as the suction operation region. It is fixedly arranged.
[0033]
As shown in FIG. 3, the shielding member 63 has a roll arrangement space 65 having a C-shaped cross section, and the suction roll body 15 is arranged in the roll arrangement space 65. The arc-shaped inner peripheral surface 67 of the roll arrangement space portion 65 is an arc surface having an inner diameter slightly larger than the outer diameter of the punching metal 29 over the entirety, and this arc surface (arc-shaped inner peripheral surface 67). A minute gap 69 is formed over the entire area of the arc-shaped inner peripheral surface 67 between the inner peripheral surface 67 and the outer peripheral surface 35 of the punching metal 29.
[0034]
Thus, the shielding member 63 covers the outer peripheral surface of the punching metal 29 in a predetermined rotation angle range in a non-contact manner with a small gap 69 to perform a non-contact seal (mask). The punching metal 29 has a suction action area A in which only the rotation angle range that is not covered by the shielding member 63 is exposed to the outside. It is divided into an action area B.
[0035]
According to the suction roll device 1 having the above configuration, the punching metal 29 is divided into the suction action area A and the suction non-action area B by the shielding member 63 when viewed in the roll rotation direction. In the suction working area A, the effective suction surface continuous in the roll rotation direction is obtained in the suction action area A by minimizing the negative pressure loss in B. Further, since the negative pressure is uniformly applied to the entire circumference of the punching metal 29 by the peripheral groove 39, the suction force of the punching metal 29 in the suction action area A becomes uniform in the roll rotation direction.
[0036]
Further, since each hole 31 of the punching metal 29 has a tapered surface 33 extending toward the outer peripheral surface on the outer peripheral surface side, the occurrence of suction marks caused by suction of the film F into each hole can be suppressed. . In addition, the structures of the punching metal 29 and the holes 31 are simple but provide an effective suction surface, and a commercially available product can be used, so that the manufacturing cost is low.
[0037]
As a result, in the suction action area A, unevenness in tension and suction marks are not generated on the film F transferred in contact with the outer peripheral surface 35 of the punching metal 29, and highly accurate film thickness control and the like can be performed. .
[0038]
Next, another embodiment of the cylindrical multi-hole body constituting the main part of the present invention will be described. Note that portions corresponding to FIGS. 1A to 1C of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0039]
Referring to FIGS. 4A and 4B, the punching metal 71 as a cylindrical multi-hole body is formed by plating the outer peripheral surface side of the punching metal 29 of FIGS. 1A and 1B. Since plating portions 73 (hatched portions in FIG. 4B) are provided on the respective surfaces of the hole 31 and the tapered surface 33, the inner diameter of the hole 31 is reduced. Accordingly, the inner diameter of each hole 31 becomes a smaller diameter hole beyond the area of the small diameter hole obtained by punching, and the small diameter holes formed by the plated portions 73 are arranged in the punching metal 71 countlessly and uniformly.
[0040]
Next, another embodiment of the cylindrical multi-hole body constituting the main part of the present invention will be described. Note that portions corresponding to FIGS. 1A to 1C of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0041]
Referring to FIGS. 5 and 6A and 6B, the punching metal 75 as a cylindrical multi-hole body has a double structure of an outer punching metal 77 and an inner punching metal 79.
[0042]
The hole 81 of the outer punching metal 77 has a smaller diameter than the hole 83 of the inner punching metal 79. Further, each hole 81 of the outer punching metal 77 is provided with a tapered surface 33 similar to that of the above-described embodiment shown in FIG. For example, as shown in FIG. 6A, the outer punching metal 77 has a plate thickness of 0.4 mm, is provided with a number of holes 81 uniformly, and each hole diameter d is about φ0.5 mm. is there. On the other hand, as shown in FIG. 6B, the inner punching metal 79 has a plate thickness of 1 to 2 mm, is provided with a large number of holes 83, and each hole diameter D is about 2 mm.
[0043]
In addition, a plating portion 73 may be provided in each of the holes 81 and the tapered surface 33 of the outer punching metal 77 as in FIG. 4B.
[0044]
With the above configuration, the outer punching metal 77 is provided with a number of small-diameter holes 81, so that uniform suction is performed and desired by appropriately combining the porosity of the two punching metals 77, 79. Can be set to the opening ratio. Moreover, the outer punching metal 77 is reinforced by the inner punching metal 79 having a large thickness.
[0045]
Next, a suction roll 85 and a suction roll device 87 according to another embodiment of the present invention will be described. Note that the same reference numerals are given to portions corresponding to the above-described embodiment, and description thereof will be omitted.
[0046]
Referring to FIGS. 7 and 8, a suction roll 85 constituting a part of the suction roll device 87 is provided with a cylindrical roll portion 91 as a suction roll main body 89, and one end of the roll portion 91 has A first shaft member 95 is attached via a side plate assembly 93, and a second shaft member 99 is attached to the other end via a side plate assembly 97. These first and second shaft members 95 are provided. , 99 are rotatably supported by the same bearing members as the rolling bearing members 9 and 11 attached to the brackets 5 and 7 in FIG.
[0047]
The first shaft member 95 has a key groove 111 formed therein, and a driving member (not shown) is fixedly attached to the first shaft member 95, so that a rotational force is transmitted to the suction roll body 89.
[0048]
Further, on the outer peripheral surface of the roll portion 91, a punching metal 29 as a cylindrical multi-hole body similar to the above-described embodiment is mounted. The punching metals 29, 71, and 75 according to the above-described embodiment are similarly applied to the suction roll device 87 according to this embodiment.
[0049]
The outer periphery of the roll portion 91 is provided with a multi-hole support member 113 for supporting the inner peripheral surface 37 of the punching metal 29. The multi-hole support member 113 has a lattice shape having a large space portion S. For example, a plurality of narrow rib portions 115 are provided at equal intervals in the axial direction of the suction roll main body 89. The interval is formed relatively wide. Further, a plurality of narrow beam portions 117 extending in the axial direction of the suction roll main body 89 are provided at equal intervals that are relatively wide in the circumferential direction, and the plurality of rib portions are formed by the plurality of beam portions 117. 115 are connected. Therefore, the inner peripheral surface 37 of the punching metal 29 is configured to be supported by the multi-hole supporting member 113 described above.
[0050]
Further, in the roll portion 91, for example, an inner cylinder assembly 119 as a negative pressure region regulating means is fixedly accommodated. One end of the inner cylinder assembly 119 is held by a support member 123 held by the side plate assembly 93 via a bearing 121, and a cylindrical support held by the side plate assembly 97 via a bearing 125. The other end is held by the member 127.
[0051]
A partition member 131 is attached to an outer peripheral portion of the inner cylinder portion 129 of the inner cylinder assembly 119, and as shown in FIG. 8, a negative member corresponding to a portion where the film F to be transported is wound. The pressure chamber 133 is formed.
[0052]
A plurality of openings 135 are formed in a portion of the inner cylinder portion 129 facing the negative pressure chamber 133, and the inside of the inner cylinder assembly 119 and the roll portion are formed through these openings 135. A state is established in which the negative pressure chamber 133 formed in a part of the inside of the nozzle 91 communicates.
[0053]
Further, a suction pipe 137 is attached so as to penetrate the hollow portion of the cylindrical support member 127 and the second shaft member 99, and this suction pipe 137 communicates with a negative pressure source (not shown) via a flange 139. Connected to the piping system.
[0054]
According to the suction roll device 87 having the above-described configuration, the area of the negative pressure chamber 133 partitioned by the partition member 131 becomes the suction action area A, and the remaining area becomes the suction non-action area B. Therefore, the punching metal 29 is divided into a suction action area A and a suction non-action area B when viewed in the roll rotation direction. The surface is obtained.
[0055]
The negative pressure chamber 133 enters a negative pressure state through the suction pipe 137, the inside of the inner cylindrical portion 129, and the opening 135 sequentially, and the holes 31 of the punching metal 29 in the suction action area A facing the negative pressure chamber 133. Is in a negative pressure state through the space S of the multi-hole support member 113, and the suction force becomes uniform in the roll rotation direction.
[0056]
The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.
[0057]
【The invention's effect】
As can be understood from the above description of the embodiment of the invention, according to the invention of claim 1, the cylindrical multi-hole body can be manufactured at low cost by using a commercially available punching metal, and the hole density can be reduced. Since a material having a high surface tension can be obtained, a suction surface without uneven tension can be obtained. In addition, it is possible to suppress the occurrence of suction marks in each hole only by directing the tapered surface that expands toward the outer circumferential surface generated when the punch is driven toward the outer circumferential surface of each hole. Moreover, since it has a simple structure and a commercially available punching metal can be used, the manufacturing cost can be reduced.
[0058]
According to the second aspect of the present invention, since the plated portion is provided on the surface of the hole, the inner diameter of each hole can be made smaller than the area of the small hole obtained by punching, and this small hole is innumerable. Can be arranged uniformly.
[0059]
According to the third aspect of the present invention, since the punching metal has a double structure of the outer punching metal and the inner punching metal, the outer punching metal can be provided with many small-diameter holes, so that a more uniform suction state can be achieved. Can be obtained, and a desired opening ratio can be obtained by a combination of the opening ratios of the two punching metals, and furthermore, the punching metal can be reinforced by the inner punching metal.
[0060]
According to the fourth aspect of the present invention, the punching metal constituting the cylindrical multi-hole body has a high hole density, which is commercially available, and can easily be a suction surface without tension unevenness. Moreover, since only a tapered surface extending toward the outer peripheral surface generated at the time of punching is provided so as to be located on the outer peripheral surface side of each hole, it is possible to prevent suction marks from being generated in each hole. As a result, in the suction action area in which the negative pressure area is regulated by the negative pressure area regulating means, the above-described punching metal can perform favorable film transfer without unevenness in the roll rotation direction. Further, since the structure is simple, the manufacturing cost can be reduced.
[0061]
According to the fifth aspect of the present invention, since the plated portion is provided on the surface of the hole, the inner diameter of each hole can be made smaller than the area of the small diameter hole obtained by punching, and this small diameter hole is innumerable. Can be arranged uniformly.
[0062]
According to the invention of claim 6, since the punching metal has a double structure of the outer punching metal and the inner punching metal, many small-diameter holes are provided in the outer punching metal, so that a more uniform suction state is achieved. Can be obtained, and a desired opening ratio can be obtained by a combination of the opening ratios of the two punched metals, and furthermore, reinforcement can be provided by the inner multi-hole body.
[Brief description of the drawings]
FIG. 1A is a partial plan view showing an embodiment of a cylindrical multi-hole body mounted on a suction roll according to the present invention, and FIG. 1B is a partially enlarged view of FIG. (C) is a sectional view taken along the line II in (B).
FIG. 2 is a longitudinal sectional view showing one embodiment of a suction roll device according to the present invention.
FIG. 3 is a transverse sectional view taken along line III-III in FIG. 2;
FIG. 4A is a partially enlarged plan view showing a cylindrical multi-hole body of another embodiment mounted on a suction roll according to the present invention, and FIG. 4B is an arrow IV- view of FIG. It is sectional drawing of an IV line.
FIG. 5 is a longitudinal sectional view showing another embodiment of the suction roll according to the present invention.
6A is a partial plan view showing an outer punching metal of the punching metal of FIG. 6, and FIG. 6B is a partial plan view showing an inner punching metal of the punching metal of FIG. 6; It is.
FIG. 7 is a longitudinal sectional view showing another embodiment of the suction roll device according to the present invention.
8 is a transverse sectional view taken along the line VIII-VIII in FIG.
[Explanation of symbols]
1 Suction roll device
3 Machine frame
9,11 Rolling bearing member
13 Suction roll
15 Suction roll body
17, 19 Shaft
27 In-cylinder space
29 Punching metal (cylindrical multi-hole body)
31 holes
33 tapered surface
35 Outer peripheral surface (suction surface)
37 Inner peripheral surface (negative pressure supply passage for punching metal 29)
39 circumferential groove
41 rib
45 rotary joint
63 Shielding member (negative pressure area regulation means)
71 Punching metal (cylindrical multi-hole body)
73 plating
75 Punching metal (cylindrical multi-hole body)
77 Outside punching metal
79 Inside punched metal
81 holes (outside punching metal 77)
83 holes (inside punching metal 79)
85 suction roll
87 Suction roll device
89 Suction roll body
91 Roll part
93,97 Side plate assembly
95 First shaft member
99 Second shaft member
119 Inner cylinder assembly (negative pressure area regulation means)
127 tubular support member
131 partition member
133 Negative pressure chamber
A Suction working area
B Suction non-action area

Claims (6)

A suction roll main body rotatably provided around its own central axis, and a negative pressure supply passage formed in the suction roll main body mounted on the outer peripheral surface of the suction roll main body to apply a negative pressure from the suction roll main body side. In a suction roll comprising a cylindrical multi-hole body having a ventilation structure,
The cylindrical multi-hole body is formed of a punching metal formed by punching a plurality of holes penetrating an outer peripheral surface and an inner peripheral surface by punching a metal plate material, and is generated when the punch is driven into the outer peripheral surface side of each hole. A suction roll characterized by being provided such that a tapered surface extending toward an outer peripheral surface is located. The suction roll according to claim 1, wherein a plating portion is provided on a surface of the hole so as to reduce an inner diameter of each hole. 3. The suction roll according to claim 1, wherein the punching metal has a double structure of an outer punching metal and an inner punching metal, and the outer punching metal has a smaller diameter hole than the inner punching metal. A suction roll main body rotatably provided around its own central axis, and a negative pressure supply passage formed in the suction roll main body, which is mounted on the outer peripheral surface of the suction roll main body, thereby reducing the negative pressure from the suction roll main body side. A cylindrical multi-hole body having a ventilation structure provided, and a negative-pressure area regulating means for restricting a negative pressure area in a non-contact manner with the suction roll main body so as to make only a predetermined rotation angle range of the cylindrical multi-hole body a suction action area. A suction roll device comprising:
The cylindrical multi-hole body is formed of a punching metal formed by punching a plurality of holes penetrating an outer peripheral surface and an inner peripheral surface by punching a metal plate material, and is generated when the punch is driven into the outer peripheral surface side of each hole. A suction roll device provided with a tapered surface extending toward an outer peripheral surface. 5. The suction roll device according to claim 4, wherein a plating portion is provided on a surface of each of the holes so as to reduce an inner diameter of each of the holes. 6. The suction roll device according to claim 4, wherein the punching metal has a double structure of an outer punching metal and an inner punching metal, and the outer punching metal has a smaller diameter hole than the inner punching metal. .

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