Press Roll Device

Abstract

To provide a press roll device which can adjust a gap between a first press roll and a second press roll without installing a cotter device between a first bearing part and a second bearing part.SOLUTION: A press roll device comprises: a first press roll 24 and a second press roll 26; first bearing parts 30, 30 which support first rotational shafts 28, 28 of the first press roll; second bearing parts 50, 50 which support second rotational shafts 48, 48 of the second press roll 26; first air cylinders 42, 42 which are provided in a first frame 16, and press the first bearing parts 30, 30 in a direction of the second bearing parts 50, 50; cotter devices 62, 62 which are respectively arranged between a second frame 18 and the second bearing parts 50, 50; and second air cylinders 82, 82 which pull the second bearing parts 50, 50 in a direction of the second frame 18 with the cotter devices 62, 62 held therebetween.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a press roll device for pressing a running web. [Background technology]

[0002] BACKGROUND ART Conventionally, a press roll device has been proposed in which a first press roll and a second press roll sandwich a long web such as a film and press it. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-056767 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-018967 Summary of the Invention [Problem to be solved by the invention]

[0004] In the press roll device described above, the first press roll is rotatably supported by a pair of left and right first bearing portions, and the second press roll is rotatably supported by a pair of left and right second bearing portions. A cotter device is disposed between the first bearing portions and the second bearing portions to adjust the gap between the first press roll and the second press roll. The gap between the first press roll and the second press roll can be adjusted by adjusting the gap between the first bearing portions and the second bearing portions with the cotter device.

[0005] However, with the press roll device described above, the cotter device needs to be placed between the first bearing unit and the second bearing unit, which limits the design space. This limits the size of the cotter device, which means the diameter of the male screw that moves the cotter device cannot be increased, resulting in the problem of reduced durability of the screw parts. Conversely, if the space for the cotter device is prioritized, restrictions will be placed on the roll shaft diameter of the first bearing unit and the second bearing unit and the size of the bearings that receive them, making it difficult to ensure the strength of the roll.

[0006] In view of the above problems, the present invention aims to provide a press roll device that can adjust the gap between the first press roll and the second press roll without installing a cotter device between the first bearing portion and the second bearing portion. [Means for solving the problem]

[0007] The present invention relates to a press machine including a first press roll, a second press roll disposed parallel to the first press roll, a pair of left and right first bearing units that horizontally and rotatably support a pair of left and right first rotating shafts of the first press roll, a pair of left and right second bearing units that horizontally and rotatably support a pair of left and right second rotating shafts of the second press roll, a motor that rotates the first press roll and the second press roll, a pair of left and right frames that respectively support the pair of left and right first bearing units and the pair of left and right second bearing units, a first frame that is disposed on the opposite side of the second press roll with the first press roll sandwiched therebetween, and a frame that is disposed on the opposite side of the second press roll with the second press roll sandwiched therebetween. a pair of left and right first cylinders that are provided on the first frame and press the pair of left and right first bearing portions toward the pair of left and right second bearing portions; a pair of left and right cotter devices that are respectively disposed between the second frame and the pair of left and right second bearing portions; and a pair of left and right second cylinders that pull the pair of left and right second bearing portions toward the second frame, sandwiching the pair of left and right cotter devices therebetween, wherein the pair of left and right cotter devices adjusts the gap between the first press roll and the second press roll, and the first press roll and the second press roll, which are rotated by the motor, press a running web. [Effects of the Invention]

[0008] According to the present invention, a pair of left and right second bearing units are provided on the second frame with a pair of left and right cotter devices sandwiched between them, and with the second cylinder sandwiching the second bearing units and the cotter devices and pulling them toward the second frame, the first press roll can adjust the distance between the first press roll and the second press roll with the pair of left and right cotter devices. Therefore, there is no need to provide a pair of left and right cotter devices between the first bearing unit and the second bearing unit, and a large cotter device can be installed without the space constraints of the conventional system. [Brief explanation of the drawings]

[0009] [Figure 1]FIG. 2 is a partially cutaway left side view of a press roll device showing one embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the press roll device as seen from above. [Figure 3] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] A press roll device 10 according to one embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The press roll device 10 of this embodiment presses a continuous web W between two rotating heated rolls (a first press roll 24 and a second press roll 26). The web W may be a film, a film coated with a coating liquid, or a metal foil. The press roll device 10 of this embodiment also includes a case in which a continuous web W is produced by hot-pressing a powder composite. In this description, the web W runs vertically from top to bottom of the press roll device 10 as shown in FIG. 1, and the left side in FIG. 1 is defined as the front, and the right side as the rear. Furthermore, the left-right direction is defined as the left-right direction when viewed from the rear to the front.

[0011] (1) Press roll device 10 The structure of the press roll device 10 will be described with reference to Figures 1 and 2. The base 14 of the frame 12 of the press roll device 10 is placed on a horizontal floor surface and has a rectangular planar shape. A rectangular first frame 16 is erected along the front part of the upper surface of the base 14. A rectangular second frame 18 is erected along the rear part of the upper surface of the base 14. A rectangular left frame 20 is erected between the first frame 16 and the second frame 18, on the left side of the upper surface of the base 14. A rectangular right frame 22 is erected on the right side of the base 14. A motor frame 23 is provided on the base 14 to the left of the left frame 20.

[0012] As shown in FIG. 2, the motor frame 23 is provided with a first motor 34 and a first reducer 35 connected thereto, and a second motor 54 and a second reducer 55 connected thereto.

[0013] 1 and 2, a first press roll 24 is disposed horizontally in the left-right direction between the left frame 20 and the right frame 22, on the front side above the base 14. A second press roll 26 is disposed behind the first press roll 24, aligned horizontally with and parallel to the first press roll 24.

[0014] (2) Mounting structure of the first press roll 24 The following describes the mounting structure of the first press roll 24. As shown in Figures 1 and 2, a pair of left and right first rotary shafts 28, 28 protruding from both the left and right sides of the first press roll 24 are rotatably supported by a pair of left and right first bearing portions 30, 30 via first bearings 32, 32, respectively.

[0015] As shown in FIGS. 1 and 2, a left first recess 36 having a rectangular side surface opens on the right surface of the left frame 20. The vertical size of the left first recess 36 is the same as the vertical size of the first bearing portion 30 on the left side of the rectangular parallelepiped, and the front-to-rear size of the left first recess 36 is longer than the front-to-rear size of the first bearing portion 30 on the left side of the rectangular parallelepiped. The left first bearing portion 30 is fitted into the left first recess 36 of the left frame 20. As shown in FIG. 2, a right first recess 40 having a rectangular side surface opens on the left surface of the right frame 22. The vertical size of the right first recess 40 is the same as the vertical size of the first bearing portion 30 on the right side of the rectangular parallelepiped, and the front-to-rear size of the right first recess 40 is longer than the front-to-rear size of the first bearing portion 30 on the right side of the rectangular parallelepiped. The right first bearing portion 30 is fitted into the right first recess 40 of the right frame 22. As a result, the pair of left and right first bearing portions 30, 30 can move in the front-rear direction between the left frame 20 and the right frame 22, but are prevented from moving in the left-right direction.

[0016] 1 and 2, the left first rotating shaft 28 protruding from the left first bearing portion 30 passes through the left frame 20 and is connected by a first coupling device 38 to the output shaft of a first reducer 35 connected to a first motor 34. The first coupling device 38 is a link coupling device, and a "link coupling device" is a skew joint that utilizes the crank motion of a link and allows the shaft to move parallel to one another.

[0017] 2, a first supply pipe 41 that supplies heated oil is connected via a rotary joint (not shown) to the right-side first rotary shaft 28 that protrudes from the right-side first bearing portion 30. Inside the first press roll 24, there is a cavity that stores the heated oil that flows from the first supply pipe 41, and this heated oil heats the first press roll 24 to a predetermined temperature.

[0018] As shown in FIGS. 1 and 2, first cylinder bodies 44, 44 of a pair of left and right first air cylinders 42, 42 are respectively provided in the front-rear direction on the rear surface of the first frame 16. A pair of left and right first piston rods 46, 46 protruding rearward from the pair of left and right first cylinder bodies 44, 44 are attached to the front surfaces of the pair of left and right first bearing portions 30, 30. The left first air cylinder 42 presses the left first bearing portion 30 rearward (in the direction of the white arrow in FIG. 1 ) to move along the left first recessed portion 36, and the right first air cylinder 42 presses the right first bearing portion 30 rearward (in the direction of the white arrow in FIG. 1 ) to move along the right first recessed portion 40. Note that the pair of left and right first air cylinders 42, 42 maintain the pressing state with the first piston rods 46, 46 fully extended. Therefore, the first press roll 24 does not move rearward from that position, i.e., toward the second press roll 26.

[0019] (3) Mounting structure of the second press roll 26 The following describes the mounting structure of the second press roll 26. As shown in Figures 1 and 2, a pair of left and right second rotary shafts 48, 48 protrude from both the left and right sides of the second press roll 26 and are rotatably supported by a pair of left and right second bearing portions 50, 50 via second bearings 52, 52.

[0020] As shown in FIGS. 1 and 2 , a left second recess 56 having a rectangular side surface opens on the right surface of the left frame 20. The vertical size of the left second recess 56 is the same as the vertical size of the second bearing portion 50 on the left side of the rectangular parallelepiped, and the front-to-rear size of the left second recess 56 is longer than the front-to-rear size of the second bearing portion 50 on the left side of the rectangular parallelepiped. The left second bearing portion 50 is fitted into the left second recess 56 of the left frame 20. A right second recess 60 having a rectangular side surface opens on the left surface of the right frame 22. The vertical size of the right second recess 60 is the same as the vertical size of the second bearing portion 50 on the right side of the rectangular parallelepiped, and the front-to-rear size of the right second recess 60 is longer than the front-to-rear size of the second bearing portion 50 on the right side of the rectangular parallelepiped. The right second bearing portion 50 is fitted into the right second recess 60 of the right frame 22. This allows the pair of left and right second bearing portions 50, 50 to move in the front-rear direction between the left frame 20 and the right frame 22, while preventing movement in the left-right direction.

[0021] 1 and 2, the left second rotating shaft 48 protruding from the left second bearing portion 50 passes through the left frame 20 and is connected to a second reducer 55 which is connected to a second motor 54 by a second coupling device 58. The second coupling device 58 is the link coupling device described above.

[0022] A second supply pipe 61 that supplies heated oil is connected via a rotary joint (not shown) to the right-side second rotary shaft 48 that protrudes from the right-side second bearing portion 50. Inside the second press roll 26, there is a cavity that stores the heated oil that flows from the second supply pipe 61, and this heated oil heats the second press roll 26 to a predetermined temperature.

[0023] 1 and 2, a pair of left and right cotter devices 62, 62 are provided between the rear surfaces of the pair of left and right second bearing portions 50, 50 and the second frame 18. The cotter devices 62 will be described in detail later.

[0024] As shown in Fig. 1, second cylinder bodies 84, 84 of a pair of left and right second air cylinders 82, 82 are provided in the front-rear direction on both the left and right sides of the front surface of the second frame 18. Second piston rods 86, 86 protruding from the pair of left and right second cylinder bodies 84, 84 are connected to the rear surfaces of the pair of left and right second bearing portions 50, 50. The pair of left and right second air cylinders 82, 82 constantly pull the pair of left and right second bearing portions 50, 50 in the direction of the second frame 18 (rearward, in the direction of the white arrow in Fig. 1) with the pair of left and right cotter devices 62, 62 sandwiched therebetween.

[0025] (4) Cotter device 62 Next, the pair of left and right cotter devices 62, 62 will be described with reference to Figure 3. Since the left and right cotter devices 62, 62 have the same structure, only the left cotter device 62 will be described.

[0026] As shown in Figure 3, a flat fixing portion 64 is provided in the vertical direction on the left side of the front surface of the second frame 18. This flat fixing portion 64 is a rectangular parallelepiped, and its front surface is a surface parallel to the vertical direction. Meanwhile, an inclined fixing portion 66 is provided on the rear surface of the left second bearing portion 50. The rear surface of this inclined fixing portion 66 is inclined with respect to the vertical direction.

[0027] As shown in FIG. 3 , a cotter block 68 is provided between the flat surface fixing portion 64 and the inclined surface fixing portion 66. The cotter block 68 is wedge-shaped, formed by modifying a rectangular parallelepiped. The surface facing the flat surface fixing portion 64 is parallel to the vertical direction, while the surface facing the inclined surface fixing portion 66 is inclined along the inclined surface of the inclined surface fixing portion 66. A female threaded portion 74 that opens vertically is provided inside the cotter block 68, and a male threaded portion 76 is threadedly engaged with this female threaded portion 74. The male threaded portion 76 is rotatable and fixed in the vertical direction by a pair of upper and lower screw receiving portions 78 and 80. A handle 90 is provided above the male threaded portion 76. Rotating this handle 90 moves the cotter block 68 up and down, thereby changing the distance between the second frame 18 and the second bearing portions 50, 50.

[0028] 3, a rear roller member 70 is provided between the flat fixing portion 64 and the cotter block 68, and a front roller member 72 is provided between the inclined surface fixing portion 66 and the inclined surface of the cotter block 68. A plurality of cylindrical rollers 94 are aligned in the vertical direction on the rear roller member 70 and the front roller member 72, making it easy for the cotter block 68 to move in the vertical direction.

[0029] An example of the rear roller member 70 is a roller way. A roller way is an endless arrangement of multiple cylindrical rollers 94 that surround a substantially rectangular parallelepiped raceway 92 in the longitudinal direction (vertical direction). The raceway 92 is fixed to the flat fixing part 64 with bolts or the like, and the flat part of the cotter block 68 abuts against the front surface of the raceway 92 in the vertical direction.

[0030] The front roller member 72 is also a roller way like the rear roller member 70, and a plurality of cylindrical rollers 94 are arranged endlessly in the vertical direction on a substantially rectangular parallelepiped raceway 92, which is fixed to the sloped surface fixing portion 66. The sloped surface of the cotter block 68 abuts against the rear surface of the raceway 92 of the front roller member 72.

[0031] (5) Operating state of the press roll device 10 Next, the operation of the press roll device 10 will be described with reference to the drawings.

[0032] First, as shown in FIG. 1, the web W is passed between the first press roll 24 and the second press roll 26 in the vertical direction.

[0033] Next, the first press roll 24 and the second press roll 26 are heated to a predetermined temperature.

[0034] Next, as shown in Figures 1 and 2, the pair of left and right first air cylinders 42, 42 is used to move the first press roll 24 toward the second press roll 26 (the direction of the white arrow in Figure 1). At this time, the pair of left and right first air cylinders 42, 42 maintain the first piston rods 46, 46 in a state where they are maximally extended. Therefore, the first press roll 24 does not move rearward from that position, i.e., toward the second press roll 26.

[0035] Next, as shown in Figures 1 and 2, while the second press roll 26 is pulled toward the second frame 18 (rearward, in the direction of the white arrow in Figure 1) by a pair of left and right second air cylinders 82, 82, the gap between the first press roll 24 and the second press roll 26 is adjusted by a pair of left and right cotter devices 62, 62 as shown in Figures 1 to 3. This gap is set to the interval at which the running web W is pressed. When operating this cotter device 62, the male thread portion 76 is rotated by the handle 90 against the pulling force of the second air cylinder 82 to move the cotter block 68 up and down, thereby adjusting the gap.

[0036] Next, as shown in Figures 1 and 2, the first press roll 24 is rotated by the first motor 34, and the second press roll 26 is rotated by the second motor 54, and the web W running from top to bottom is pressed and heated by the heated first press roll and second press roll 26.

[0037] (6) Effects In the press roll device 10 of this embodiment, the cotter devices 62, 62 are positioned not between the first bearing portions 30, 30 and the second bearing portions 50, 50, but between the second bearing portions 50, 50 and the second frame 18, so there are no space constraints as in the past, and large cotter devices 62, 62 can be installed. As a result, the dimensions of the cotter block 68 are increased, and parts such as the male thread portion 76 are also larger, improving wear resistance. Furthermore, because there is more space to install the cotter devices 62, 62, roller ways can be used for the rear roller member 70 and the front roller member 72.

[0038] Furthermore, the sizes of the first press roll 24 and the second press roll 26 can be increased, which widens the options for the first bearings 32, 32 and the second bearings 52, 52.

[0039] When the first press roll 24 and the second press roll 26 are heated, the first frame 16, the second frame 18, and the pair of left and right cotter devices 62, 62 also thermally expand due to heat transfer from the first press roll 24 and the second press roll 26. However, since the pair of left and right cotter devices 62, 62 can be separated from between the first press roll 24 and the second press roll 26, thermal expansion can be suppressed.

[0040] A modification of the above embodiment will now be described.

[0041] In the above embodiment, the first press roll 24 and the second press roll 26 are heated rolls, but they may be room temperature press rolls that are not heated.

[0042] Furthermore, in the above embodiment, the first press roll 24 and the second press roll 26 are arranged horizontally side by side, but instead, the second press roll 26 may be provided above the first press roll 24, and they may be arranged stacked in the vertical direction.

[0043] In addition, in the above embodiment, the first press roll 24 and the second press roll 26 are heated with heated oil, but this is not limited to this, and they may also be heated by installing electric heaters inside the first press roll 24 and the second press roll 26, respectively.

[0044] Furthermore, in the above embodiment, when operating the cotter device 62, the male screw portion 76 is rotated and adjusted using the handle 90, but instead the gap may be adjusted by rotating the male screw portion 76 using a motor.

[0045] Although one embodiment of the present invention has been described above, this embodiment is presented by way of example and is not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0046] 10 press roll device, 16 first frame, 18 second frame, 24 first press roll, 26 second press roll, 30 first bearing portion, 42 first air cylinder, 50 second bearing portion, 62 cotter device, 82 second air cylinder

Claims

1. A first press roll; a second press roll arranged parallel to the first press roll; a pair of left and right first bearing portions that horizontally and rotatably support a pair of left and right first rotating shafts of the first press roll; a pair of left and right second bearing portions that horizontally and rotatably support a pair of left and right second rotation shafts of the second press roll; a motor that rotates the first press roll and the second press roll; a pair of left and right frames for supporting the pair of left and right first bearing portions and the pair of left and right second bearing portions, respectively; a first frame provided on the opposite side of the first press roll from the second press roll, with the first press roll sandwiched between them; a second frame provided on the opposite side of the second press roll from the first press roll, with the second press roll sandwiched between them; a pair of left and right first cylinders provided on the first frame and configured to press the pair of left and right first bearing portions toward the pair of left and right second bearing portions; a pair of left and right cotter devices respectively disposed between the second frame and the pair of left and right second bearing portions; a pair of left and right second cylinders that pull the pair of left and right second bearing portions toward the second frame across the pair of left and right cotter devices; and a pair of left and right cotter devices for adjusting a gap between the first press roll and the second press roll; The running web is pressed by the first press roll and the second press roll rotated by the motor. A press roll device characterized by:

2. The first press roll and the second press roll are heated rolls. The press roll device according to claim 1 .

3. The first press roll and the second press roll are arranged side by side in a horizontal direction, and the web runs between them in a vertical direction. The press roll device according to claim 1 .

4. The first press roll and the second press roll are arranged one above the other in the vertical direction, and the web runs between them in the front-to-rear direction. The press roll device according to claim 1 .

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