JP2002031127A - Blanket fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blanket fitting structure in which a blanket can be fixed to a head with a uniform force in the circumferential direction, and the sealability can be ensured sufficiently. SOLUTION: The blanket 4 is narrowly fitted between a blanket supporting surface 3A formed on the head 3 outwardly in the radial direction and a split ring 14 which is split into a plurality of arc-like ring pieces 15, and the blanket 4 is fixed to the head 3 by pressing the split ring 14 against the blanket supporting surface by a pressing means 17. Fitting structures 15A and 15B are formed on both ends in the circumferential direction of the ring pieces 15, and ends of the adjacent ring pieces 15 and 15 are fitted to each other when the blanket 4 is fitted to the head 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blanket mounting structure for a long nip press roll provided in a paper machine or the like.

[0002]

2. Description of the Related Art In a paper machine, a thin strip-shaped web such as paper or felt is sandwiched at a predetermined pressure between a counter roll installed opposite thereto and a nip pressure is applied to the web to dehydrate the web. And a press roll (long nip press roll) for performing a forming process. This press roll has a head supported on both ends of a center shaft via bearings, and is provided with an impervious and flexible cylindrical thin body (blanket). Is provided with a press shoe for applying a nip pressure to the web in cooperation with a mating roll. Also, a seal is applied to a mounting portion of the blanket to the head, and the internal pressure in the blanket is set slightly higher than the atmospheric pressure.

During operation, the blanket rotates at a high speed and receives a pressing force from the press shoe at the nip engagement portion with the mating roll, so that a large load is applied to the mounting portion of the blanket. For this reason, if the strength of the mounting portion is low, there is a possibility that the mounting portion may be damaged by use. The internal pressure of the press shoe may be reduced, or the lubricating oil supplied to the press shoe may leak to the outside.

Therefore, in the technique disclosed in Japanese Patent Application Laid-Open No. 4-327289, the blanket (jacket) is fixed to the head (end wall) with a sufficient force, and the head is fixed with a uniform force in the circumferential direction of the head. A wedge-shaped circular groove having a wedge-shaped cross section is formed inside the head, and a circular wedge-shaped cross section divided into a plurality of identical arc-shaped ring pieces (segments) together with the end of the blanket in the circular groove. By inserting the clamp member and pushing the clamp member into the circular groove with a bolt, the blanket is clamped to the head by the wedge action of the clamp member and the circular groove.

[0005]

However, the above-mentioned prior art (the technique disclosed in Japanese Patent Application Laid-Open No. 4-327289) has the following problems. That is, in the above technique, when the clamp member is disposed outside the blanket to fix the blanket to the head from the outside,
Dividing the clamp member into multiple identical arcuate ring pieces,
Although the blanket is clamped for each ring piece, if there is a gap between the ring pieces, no clamping force acts on this gap. For this reason, the fixing force between the blanket and the head is not completely uniform in the circumferential direction, and a sufficient sealing property cannot be secured in a portion where the fixing force is insufficient, and air leakage and oil leakage occur. There is a possibility that it will end up.

In the above-mentioned technique, when the clamp member is disposed inside the blanket to fix the blanket to the head from the inside, the clamp member is provided so as to uniformly disperse the wedge force in the circumferential direction. Although a plurality of slots extending in the radial direction and the axial direction are provided, if the slots are provided in the clamp member in this manner, air or oil leaks from the portion to the outside. The same applies to the case where the clamp member is divided into a plurality of identical arc-shaped ring pieces, and air or oil leaks to the outside from gaps between the ring pieces. In this regard, in the above-described technology, the sealability is ensured by providing a seal member in another portion. However, only providing the seal member separately complicates the device structure and increases the cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in consideration of the above circumstances, and has a blanket mounting method capable of fixing a blanket to a head with a uniform force in a circumferential direction and ensuring sufficient sealing performance. It is intended to provide structure.

[0008]

In order to achieve the above object, in the blanket mounting structure of the present invention, a center shaft supported by being restricted in rotation and rotatably supported at both ends of the center shaft. A press roll comprising: a pair of heads; a flexible cylindrical blanket mounted between the pair of heads; and a press shoe disposed on the center shaft and in sliding contact with an inner peripheral surface of the blanket. A blanket mounting structure for mounting the blanket on the head, the blanket supporting surface having the same diameter or substantially the same diameter as an inner peripheral surface of the blanket formed on the head radially outward; A split ring having an inner circumferential surface having the same diameter or substantially the same diameter as the outer circumferential surface of the split ring, the split ring being circumferentially split into a plurality of arc-shaped ring pieces; Pressing means for pressing the blanket between the blanket supporting surface and the split ring, and pressing the split ring toward the blanket supporting surface by the pressing means. Are fixed to the head, and fitting structures are formed at both ends in the circumferential direction of the ring piece, and the ends of adjacent ring pieces are fitted to each other when the blanket is mounted on the head. It is characterized in that it is configured to make it.

It is preferable that the fitting structure is constituted by a concave portion having a groove of a constant width and a convex portion having a tongue having the same width or substantially the same width as the groove. The concave portion is formed at the end of one adjacent ring piece, and the convex portion is formed at the end of the other ring piece. When the blanket is attached to the head, the one ring piece is The convex portion of the other ring piece is fitted into the concave portion. A plurality of the concave portions and / or the convex portions are formed at the end of one adjacent ring piece, and the concave and / or convex portions are formed at the end of the other ring piece so as to correspond to the end shape of the one ring piece. Alternatively, it is preferable to form a plurality of the convex portions.

According to another aspect of the present invention, there is provided a blanket mounting structure for mounting a blanket to a head on a press roll, wherein the head has a radius. A blanket support surface having the same diameter or substantially the same diameter as the outer peripheral surface of the blanket formed inward in the direction, and an outer peripheral surface having the same diameter or substantially the same diameter as the inner peripheral surface of the blanket, and a plurality of the outer peripheral surfaces having the same diameter. A split ring divided into arcuate ring pieces, and pressing means for pressing the split ring toward the blanket support surface, wherein the blanket is narrowed between the blanket support surface and the split ring, The split ring is pressed against the blanket support surface by the pressing means, thereby fixing the blanket to the head. Both the locking structure is formed in the circumferential ends of the ring segments, at the time of attachment to the head of the blanket is characterized by being configured to engaged with each other between the ends of adjacent ring segments.

The structure of the locking structure is preferably composed of a concave portion having a wedge-shaped groove and a convex portion having an inverted wedge-shaped tongue having a smaller width than the groove. The concave portion is formed at the end of one of the ring pieces, and the convex portion is formed at the end of the other ring piece. When the blanket is mounted on the head, the concave portion of the one ring piece is formed. And the convex portion of the other ring piece. More preferably, an elastic member is attached to the locking surface of the concave portion and / or the convex portion.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a blanket mounting structure according to a first embodiment of the present invention. First, the configuration of a press roll to which the present blanket mounting structure is applied will be described with reference to FIG.

As shown in FIG.
Is equipped with a cylindrical blanket 4 around a center shaft 1 arranged in the width direction of the apparatus. Both ends of the center shaft 1 are supported by a stand (not shown) in a state where the rotation is restricted, and a pair of disk-shaped heads 3 and 3 are rotatably supported via bearings 2 on the shaft. I have. The blanket 4 has both ends mounted on the heads 3 and 3, and can freely rotate around the center shaft 1 via the bearing 2. The blanket 4 is formed of an airtight and liquid-tight flexible material, and the internal space of the press roll 30 surrounded by the blanket 4 and the heads 3 and 3 is placed under a predetermined pressure higher than the atmospheric pressure. Has been.

The center shaft 1 has a mating roll 6
, A press shoe 5 is arranged. The press shoe 5 is means for cooperating with the counter roll 6 to pressurize a web (not shown) sandwiched between the blanket 4 and the counter roll 6 to perform a dewatering process and a forming process of the web. The press shoe 5 is operated by hydraulic pressure, and the press shoe 5 and the blanket 4 are in sliding contact with each other via an oil film.

Next, the configuration of the blanket mounting structure according to the present embodiment will be described with reference to FIGS. Figure 2
As shown in FIG. 3, a blanket supporting surface 3A for supporting the blanket 4 is formed on the head 3.
The blanket support surface 3 </ b> A is a cylindrical curved surface formed radially outward, and the radius of curvature is set to be the same as or slightly smaller than the radius of curvature of the inner peripheral surface of the blanket 4. A plurality of positioning pins 10 are arranged at equal intervals in the circumferential direction outside the blanket support surface 3A in the axial direction.
Are protruded in the radial direction. At the end of the blanket 4, a plurality of pin holes 9 are formed in the circumferential direction corresponding to the positions of the pins 10.

In the present blanket mounting structure, the blanket 4 is oriented radially inward with the pins 10 provided on the head 3 hooked into the pin holes 9 of the blanket 4 and the blanket 4 is positioned.
The blanket 4 is attached to the head 3 by pressing and fixing the blanket A to the head 3. In the present blanket mounting structure, the blanket 4 is mechanically fixed to the blanket support surface 3A using the split ring 14.

The split ring 14 is an annular metal ring whose axial width is smaller than the width of the blanket support surface 3A, and whose inner peripheral surface has a radius of curvature of the outer peripheral surface of the blanket 4, specifically, Is set to the same or substantially the same as the radius of curvature at the time of final pressing. The split ring 14
It is divided into a plurality of arc-shaped ring pieces 15 in the circumferential direction.

As shown in FIG. 4, each ring piece 15 has a concave portion 15A at one end and a convex portion 15B at the other end. A groove 15a having a constant width parallel to the circumferential direction is formed in the concave portion 15A, and a tongue 15b having a constant width parallel to the circumferential direction is formed in the convex portion 15B. The groove 15a and the tongue 15b have the same width, and the depth of the groove 15a and the length of the tongue 15b are set to be equal. As shown in FIG. 4, the length of each ring piece 15 in the circumferential direction is
The gap is set so that a slight gap is formed between the tip of the groove 5a and the bottom of the groove 15a and between the base of the tongue 15b and the opening end of the groove 15a. An elastic member 16 such as rubber is attached to the inner peripheral surface side of each ring piece 15 in consideration of the adhesion to the blanket 4.

In the present blanket mounting structure, an annular tightening band 17 is used as a pressing means for pressing the split ring 14 against the blanket 4. The tightening band 17 has an axial width wider than the width of the split ring 14, and tightens the entire outer peripheral surface of the split ring 14 with a uniform force to press the split ring 14 inward in the radial direction. ing. Further, the tightening force of the tightening band 17 can be adjusted by the tightening amount of the bolt 17a.

Next, the operation and effects of the blanket mounting structure according to the first embodiment of the present invention configured as described above will be described. In this blanket mounting structure, the blanket 4 is pressed against the blanket support surface 3A of the head 3 by the split ring 14 as described above. Since the split ring 14 is divided into a plurality of arc-shaped ring pieces 15, the blanket 4 is pressed for each ring piece 15. At this time, the adjacent ring pieces 1
If there is a gap communicating in the axial direction between the blankets 5 and 15, the blanket 4 will not receive a pressing force in the gap, and the sealing performance will be insufficient.

However, in this blanket mounting structure, a concave portion 15A and a convex portion 15B are formed at both ends in the circumferential direction of each ring piece 15, and when the blanket 4 is pressed, the concave portions 15A of the adjacent ring pieces 15, 15 are formed. And the projection 15B are fitted to each other. Therefore, there is no gap formed between the adjacent ring pieces 15, 15 communicating in the axial direction, and the blanket 4 is pressed and fixed to the blanket support surface 3 </ b> A with a uniform circumferential force. Further, the groove 15a of the concave portion 15A and the tongue 15b of the convex portion 15B are both formed with a constant width in parallel with the circumferential direction, and furthermore, since they have the same width, there is no backlash in the axial direction at the fitting portion. The pressing force between the blanket 4 and the head 3 is made uniform even in the axial direction.

The groove 15a of the concave portion 15A and the convex portion 15B
And the tongue 15b are formed at a constant width in parallel with the circumferential direction, so that the tongue 15b of the convex portion 15B can slide freely in the circumferential direction in the groove 15a of the concave portion 15A, and can be tightened. There is no interference when the band 17 is tightened. Further, the length of each ring piece 15 in the circumferential direction is such that the distance between the distal end of the tongue 15b and the bottom of the groove 15a and the proximal end of the tongue 15b and the opening distal end of the groove 15a when tightening with the tightening band 17 Since a small gap is formed between the ring pieces, the ring pieces 15 do not interfere in the circumferential direction and the displacement in the radial direction is not restricted, and the blanket 4 is tightened with a sufficient force. Can be.

Therefore, according to the present blanket mounting structure, the blanket 4 can be pressed and fixed to the blanket support surface 3A of the head 3 with a uniform force in the circumferential direction, and thereby the sealing property between the blanket 4 and the head 3 can be improved. There is an advantage that it can be sufficiently secured.
The shape of the end of each ring piece 15 is not limited to the shape of this embodiment, and a plurality of recesses 15A are formed at one end as shown in FIG. A plurality of projections 15B may be formed according to the shape. According to such a configuration, the ring pieces 15, 15
The meshing between them can be improved, and the blanket 4 can be stably pressed.

Next, a blanket mounting structure according to a second embodiment of the present invention will be described with reference to FIGS. 6 to 9, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted. As shown in FIG. 6, the press roll 40 includes a center shaft 1 supported by being restricted in rotation, as in the first embodiment.
A pair of heads 33, 33 rotatably supported at both ends of the center shaft 1 via bearings 2;
A blanket 4 is provided between the center and the center shaft 1 and is in sliding contact with the inner peripheral surface of the blanket 4.

In the blanket mounting structure of the present embodiment, the blanket 4 is pressed and fixed to the head 3 from the outside in the radial direction to the inside in the first embodiment. On the other hand, as shown in FIG. It is characterized in that the blanket 4 is pressed and fixed against the head 33 outwardly, and the internal pressure inside the blanket 4 is maintained and sealed.

More specifically, the head 33 includes an inner ring portion 34 supported by the bearing 2 and an outer ring portion 35 fitted on the outer periphery of the inner ring portion 34, as shown in FIGS. A blanket support surface 35A for supporting the blanket 4 is formed on the inner peripheral surface of the outer ring portion 35. The radius of curvature of the blanket support surface 35 </ b> A is set to be the same as or slightly larger than the radius of curvature of the outer peripheral surface of the blanket 4. Further, a stopper 34A is formed on the inner ring portion 34 for restraining a later-described split ring 44 from moving in the axial direction, and a blanket support surface 35A is formed.
A plurality of positioning pins 10 are provided radially outwardly at equal intervals in the circumferential direction.

In the present blanket mounting structure, the pins 10 provided on the inner ring portion 34 are hooked into the pin holes 9 of the blanket 4 and the blanket 4 is positioned.
As shown in FIG. 7, the blanket 4 is mounted on the head 3 by pressing the blanket 4 toward the outside in the radial direction against the blanket support surface 35 </ b> A of the outer ring portion 35. In the present blanket mounting structure, the fixing of the blanket 4 is performed by the split ring 44.
It is performed using.

The split ring 44 is an annular metal ring, and is divided into a plurality of arc-shaped ring pieces 45 in the circumferential direction. The axial width of the split ring 44 is smaller than the width of the blanket support surface 35A, and the radius of curvature of the outer peripheral surface is the same as the radius of curvature of the inner peripheral surface of the blanket 4, specifically, the radius of curvature at the time of final pressing. The diameters are set to be substantially the same. The inner peripheral surface of the split ring 44 is formed in a tapered shape whose diameter increases inward in the axial direction.

As shown in FIG. 9, each ring piece 45 has a concave portion 45A at one end and a convex portion 45B at the other end. The concave portion 45A is formed with a wedge-shaped groove 45a, and the convex portion 45B is formed with an inverted wedge-shaped tongue 45b. Although the width of the tongue 45b is smaller than the width of the groove 45a, the width of the tip is wider than the width of the opening of the groove 45a. An elastic member 46 made of rubber or the like is attached on the outer peripheral surface side of each ring piece 45 in consideration of the adhesion to the blanket 4, and the side of the groove 45 a and the tongue 45 b is impervious to rubber and the like. Elastic member 47 is attached.

In the present blanket mounting structure, the tapered ring 20 is used as a pressing means for pressing the split ring 44 against the blanket 4. As described above, the inner peripheral surface of the split ring 44 is formed in a tapered shape.
The outer peripheral surface of the tapered ring 20 is engaged with the inner peripheral surface of the tapered split ring 44. Then, by tightening the screw 21 to move the tapered ring 20 outward in the axial direction, the split ring 44 presses the blanket 4 against the blanket support surface 35A by the radial component of the pressing force received from the tapered ring 20. It has become. The split ring 44 is also pressed in the axial direction by the tapered ring 20,
The axial movement is restricted by the stopper 34A of the inner ring portion 34.

Next, the operation and effects of the blanket mounting structure according to the second embodiment of the present invention configured as described above will be described. In this blanket mounting structure, the blanket 4 is pressed against the blanket support surface 35A of the head 33 by the split ring 44 as described above. Since the split ring 44 is divided into a plurality of arc-shaped ring pieces 45, the blanket 4 is pressed for each ring piece 45. However, since the blanket 4 is pressed from the inside in the radial direction to the outside, each ring piece 45 is pressed. 45 receives a force in the direction of separation in the circumferential direction. At this time, a concave portion 4 having a wedge-shaped groove 45a is formed at both circumferential ends of each ring piece 45.
Since the projection 5B and the projection 45B having the inverted wedge-shaped tongue 45b are formed, the opening of the groove 45a and the tip of the tongue 45b are locked to each other as shown in FIG. 9B.

Therefore, there is no gap formed between the adjacent ring pieces 45, 45 communicating in the axial direction, and the blanket 4 is formed with a uniform force in the circumferential direction.
It is pressed and fixed to 5A. Further, both side surfaces of the inverted wedge-shaped tongue 45b are engaged with the wedge-shaped groove 45a, and an impervious elastic member 47 such as rubber is provided on both side surfaces of the tongue 45b and the groove 45a.
Is attached, the gap between the ring pieces 45, 45 is securely sealed.

Therefore, according to the present blanket mounting structure, similarly to the first embodiment, the blanket 4 can be pressed against the blanket supporting surface 35A of the head 33 with a uniform force in the circumferential direction and fixed.
There is an advantage that the sealing performance between the head and the head 33 can be sufficiently ensured. In addition, the adjacent ring piece 4
There is an advantage that the gap between the ring pieces 45, 45 can be simultaneously sealed by locking the pieces 5, 45 with each other.

Further, in the first embodiment, the blanket 4
When the blanket 4 is mounted, since the blanket 4 is pressed against the blanket support surface 3A having a smaller diameter than the inner diameter of the blanket 4 from outside, the blanket 4 or the like must be manufactured with high precision in advance, and wrinkles or the like are generated on the blanket 4 at the time of mounting. there is a possibility. Further, there is a possibility that the split ring 14 existing radially outside the blanket 4 may interfere with the mating roll 6. On the other hand, according to the present blanket mounting structure, the blanket 4 is moved from the radially inner side to the blanket support surface 3.
Since the blanket 4 is pressed against 5A, wrinkles and the like do not occur on the blanket 4 even if there is some manufacturing error in the blanket 4 or the like. Further, the split ring 44 does not interfere with the partner roll 6.

As described above, two embodiments have been described as embodiments of the present invention. However, the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention. can do. For example, in each of the embodiments described above, the pressing means for pressing the split rings 14, 44 toward the blanket support surfaces 3A, 35A includes:
The means is not limited to the fastening band 17 or the tapered ring 20, but may be any means that can surely press the split rings 14, 44 toward the blanket support surfaces 3A, 35A.

Further, the ring piece 15 in the first embodiment
Are not limited to the parallel grooves 15a and the parallel tongues 15b, but may be any shapes as long as they fit together when tightening. The shape of the end of the ring piece 45 in the second embodiment is the same, and any shape may be used as long as it is locked to each other at the time of tightening to seal the gap between the ring pieces 45, 45.

[0037]

As described above in detail, according to the blanket mounting structure of the present invention, the blanket is mounted on the head by the fitting structures formed at both circumferential ends of each ring piece constituting the split ring. Sometimes, the ends of adjacent ring pieces are fitted to each other, so that there is no gap between the adjacent ring pieces, and the blanket can be pressed against the head with a uniform force in the circumferential direction and the blanket and the head can be fixed. There is an advantage that a sufficient sealing property can be ensured (claim 1).

In particular, the fitting structure comprises a concave portion having a groove of a constant width and a convex portion having a tongue having the same width or substantially the same width as the groove of the concave portion. A concave portion is formed at the end portion, and a convex portion is formed at the end portion of the other ring piece, and when the blanket is attached to the head, the convex portion of the other ring piece is fitted into the concave portion of one ring piece. In this case, there is an advantage that the backlash in the axial direction in the fitting portion can be eliminated, and the pressing force between the blanket and the head can be made more uniform (claim 2).

Further, a plurality of concave portions and / or convex portions are formed at an end of one adjacent ring piece, and a concave portion is formed at an end of the other ring piece so as to correspond to the end shape of the one ring piece. And / or when a plurality of convex portions are formed,
There is an advantage that the engagement between the ring pieces can be improved (claim 3).

Further, according to another blanket mounting structure of the present invention, the adjacent ring pieces can be attached to the head of the blanket by the locking structures formed at both ends in the circumferential direction of each ring piece constituting the split ring. As the blanket locks each other, the blanket can be pressed against the head with a uniform force in the circumferential direction and fixed, thereby ensuring sufficient sealing between the blanket and the head and also sealing the gap between the ring pieces. (Claim 4).

In particular, the locking structure comprises a concave portion having a wedge-shaped groove and a convex portion having an inverted wedge-shaped tongue having a width smaller than that of the concave portion. A concave portion is formed at the end of the other ring piece, and a convex portion is formed at the end of the other ring piece so that the concave portion of one ring piece and the convex portion of the other ring piece are engaged when the blanket is mounted on the head. In this case, both sides of the inverted wedge-shaped tongue are engaged with the wedge-shaped groove, so that there is an advantage that the gap between the ring pieces can be reliably sealed (claim 5).

Further, when an elastic member is attached to the locking surface of the concave portion and / or the convex portion, there is an advantage that the sealing property can be further improved (claim 6).

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a configuration of a press roll according to a blanket mounting structure according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the blanket mounting structure according to the first embodiment of the present invention, taken along the line II-II of FIG.

FIG. 3 is a cross-sectional view of the blanket mounting structure according to the first embodiment of the present invention, taken along the line III-III in FIG. 2;

FIG. 4 is a diagram showing a split ring fitting structure according to the blanket mounting structure according to the first embodiment of the present invention.

FIG. 5 is a view showing another example of a split ring fitting structure according to the blanket mounting structure as the first embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view showing a configuration of a press roll according to a blanket mounting structure according to a second embodiment of the present invention.

FIG. 7 is a cross-sectional view taken along the line IIV-IIV of FIG. 6, showing a blanket mounting structure as a second embodiment of the present invention.

FIG. 8 is a cross-sectional view of the blanket mounting structure according to the second embodiment of the present invention, taken along the line IIIV-IIIV in FIG. 7;

FIG. 9 is a view showing a locking structure of a split ring according to a blanket mounting structure as a second embodiment of the present invention;
(A) is a figure which shows the state before locking, (b) is a figure which shows a locking state.

[Explanation of symbols]

 1 center shaft 2 bearing 3,33 head 3A, 35A blanket support surface 4 blanket 5 press shoe 6 mating roll 14,44 split ring 15,45 ring piece 15A, 45A recess 15a, 45a groove 15B, 45B convex 15b, 45b tongue 16, 46, 47 Elastic member 17 Tightening band 20 Tapered ring 30, 40 Press roll

 ──────────────────────────────────────────────────の Continued on the front page (72) Mitsufumi Tanimoto, Inventor 5007 Itozakicho, Mihara-shi, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. In the Paper & Printing Machinery Division (72) Inventor Kentaro Mega 5007, Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd.In the Paper & Printing Machinery Division, Inc. F-term in Paper & Printing Machinery Division (reference) 3J103 AA02 AA13 AA27 AA28 AA75 BA31 BA41 BA47 CA03 CA05 CA25 CA36 CA78 EA08 FA02 FA18 FA22 GA02 GA52 GA55 HA01 HA04 HA12 HA31 HA53 4L055 CE78 CG14 CG15 FA22 FA30

Claims (6)

[Claims] 1. A center shaft supported by being restrained from rotating, a pair of heads rotatably supported at both ends of the center shaft, and a flexible cylindrical member mounted between the pair of heads. A blanket mounting structure for mounting the blanket to the head in a press roll provided with a blanket and a press shoe disposed on the center shaft and slidingly contacting the inner peripheral surface of the blanket. A plurality of arc-shaped ring pieces in the circumferential direction having a blanket support surface formed to be radially outward and having substantially the same diameter as the inner peripheral surface of the blanket, and an inner peripheral surface having substantially the same diameter as the outer peripheral surface of the blanket; And a pressing means for pressing the split ring toward the blanket support surface, wherein the split ring is divided between the blanket support surface and the split ring. The blanket is narrowly mounted, and the split ring is pressed toward the blanket support surface by the pressing means to fix the blanket to the head. Wherein the ends of adjacent ring pieces are fitted to each other when the blanket is mounted on the head. 2. The fitting structure includes a concave portion having a groove having a constant width, and a convex portion having a tongue having substantially the same width as the groove. Forms the concave portion, and forms the convex portion at the end of the other ring piece. When the blanket is attached to the head, the convex portion of the other ring piece is inserted into the concave portion of the one ring piece. 2. The blanket mounting structure according to claim 1, wherein the portions are fitted. 3. A plurality of the concave portions and / or the convex portions are formed at the end of one adjacent ring piece, and the end of the other ring piece corresponds to the end shape of the one ring piece. 3. The blanket mounting structure according to claim 2, wherein a plurality of said concave portions and / or said convex portions are formed on said blanket. 4. A center shaft supported by being restrained from rotating, a pair of heads rotatably supported at both ends of the center shaft, and a flexible cylindrical member mounted between the pair of heads. A blanket mounting structure for mounting the blanket to the head in a press roll provided with a blanket and a press shoe disposed on the center shaft and slidingly contacting the inner peripheral surface of the blanket. A blanket support surface formed substantially inwardly in the radial direction and having a diameter substantially equal to an outer peripheral surface of the blanket; A split ring that has been split, and pressing means for pressing the split ring toward the blanket support surface, wherein the pressing unit presses the split ring between the blanket support surface and the split ring. The Ranketto was SemaSo, by pressing toward the split ring to said blanket support surface by said pressing means,
The blanket is configured to be fixed to the head, and a locking structure is formed at both circumferential ends of the ring piece. When the blanket is mounted on the head, the ends of adjacent ring pieces are engaged with each other. A blanket mounting structure characterized by being configured to stop. 5. The locking structure comprises a concave portion having a wedge-shaped groove formed thereon, and a convex portion having an inverted wedge-shaped tongue having a width smaller than that of the groove, and an end of one adjacent ring piece. The concave portion is formed at the end of the other ring piece, and the convex portion is formed at the end of the other ring piece. When the blanket is mounted on the head, the concave portion of the one ring piece and the 5. The blanket mounting structure according to claim 4, wherein the blanket mounting structure is configured to lock the projection. 6. The blanket mounting structure according to claim 5, wherein an elastic member is attached to a locking surface of said concave portion and / or said convex portion.