JP5226421B2 - SEAL ROLL AND SEAL ROLL DEVICE - Google Patents

Description

  The present invention relates to a seal roll and a seal roll apparatus which are arranged opposite to an entrance / exit part of a horizontal or vertical continuous furnace and sandwich a material to be continuously heat-treated from both sides.

  Conventionally, in a continuous furnace that continuously heats materials such as strips, a seal roll is placed opposite to the furnace entrance and exit to prevent outflow of atmospheric gas in the furnace and intrusion of outside air into the furnace. For example, Patent Document 1 is known as such a seal roll.

In Patent Document 1, a heat-shrinkable material layer formed by laminating a high-shrinkage material layer, a low-shrinkage material layer, and a backup layer around an axis is provided, and a felt layer is bonded thereon, and the heat-shrinkable material layer The seal roll which heat-shrinked and fixed the felt layer to the shaft core is shown.
Japanese Patent No. 2905438

The felt layer of the seal roll has a density of about 0.3 g / cm ² and its surface hardness is low. As shown in FIG. 15, such a felt layer has good sealing performance because the surface of the seal roll B sinks when the material A is sandwiched.

  However, due to its flexibility, the felt fibers are likely to be scattered by contact with the material A or contact with the opposing seal roll B, causing deterioration of the sealing performance. Moreover, the life and life of the seal roll B are short due to the scattering and wear of the felt fibers, and the maintenance cycle is shortened, resulting in an increase in processing costs. Furthermore, since the restoring force of the fibers is small, there is a problem that the adhesion of the opposing seal roll B surface is likely to deteriorate due to wear or fatigue failure due to long-term use, and it is difficult to ensure the processing accuracy of the diameter. It was.

  In recent years, in order to solve these problems, a seal roll B ′ using a wear-resistant fiber in which the direction of the fiber is arranged, compressed to a higher density than the felt material, and fixing the fiber with an adhesive or the like has been used. ing. Such a seal roll B 'having a high surface hardness and an aligned fiber direction has almost no scattering of fibers and reduced wear. Further, since the sealing roll B 'compresses fibers at a high density, the processing accuracy can be secured.

  However, when the material A is sandwiched by such a seal roll B ′, as shown in FIG. 16, the surface of the seal roll B ′ does not sink, and a gap C is formed in a portion where the material A is not sandwiched. It was difficult to maintain good sealing performance.

  The present invention was devised in view of the above-described conventional problems, and is a seal roll and a seal roll device that can maintain good sealing performance while reducing fiber scattering and wear and ensuring processing accuracy. The purpose is to provide.

  The seal roll according to the present invention is a seal roll in which a fiber layer is formed around an axis, and is adjacent to the annular groove formed at an appropriate interval in the axis direction in the fiber layer. An annular block portion formed so as to be elastically deformable is interposed between these groove portions.

  The groove is formed to be inclined with respect to the shaft core.

  In the seal roll device according to the present invention, a seal roll in which a fiber layer is formed around an axial core is disposed opposite to a material inlet / outlet portion of a continuous furnace, and the inside of the furnace is hermetically sealed by sandwiching the material. In the seal roll device, an annular groove formed in the fiber layer at an appropriate interval in the axial direction, and an annular block formed so as to be elastically deformed sandwiched between the adjacent grooves. It is characterized by providing.

  The groove is formed to be inclined with respect to the shaft core.

  In the seal roll and the seal roll apparatus according to the present invention, it is possible to improve the sealing performance while reducing the scattering and wear of the fibers and ensuring the processing accuracy.

  Hereinafter, a preferred embodiment of a seal roll according to the present invention will be described in detail with reference to the accompanying drawings. As shown in FIGS. 1 to 9, the seal roll 1 according to the present embodiment basically has a shaft core 3 on the fiber layer 4 in the seal roll 1 in which the fiber layer 4 is formed around the shaft core 3. An annular groove portion 6 formed at appropriate intervals in the direction and an annular block portion 5 formed so as to be elastically deformed sandwiched between the adjacent groove portions 6 are provided.

  FIG. 1 is a sectional view on one side of the seal roll 1, and FIG. 2 is an enlarged view of a portion X of the fiber layer 4 in FIG. The seal roll 1 includes a cylindrical shaft core 3 and an annular fiber layer 4 that covers the outer periphery of the shaft core 3. At both ends of the seal roll 1 in the direction of the axis 3, annular fixing flanges 9 are provided.

FIG. 3 illustrates an explanatory diagram showing the forming stage of the fiber layer 4. The fiber layer 4 is formed of a heat-resistant and wear-resistant fiber material. Abrasion resistance is set to about 1 mm / year. Specifically, for example, a heat-resistant fiber material such as Kevlar kv100 (registered trademark) or Zylon (registered trademark) is used, and the density of the fiber layer 4 is formed to about 0.45 to 0.75 g / cm ³ . Further, the fiber layer 4 is formed by aligning the direction of the fibers. For example, as illustrated in FIG. 3 (b), the fiber material is cut into a strip shape with the fiber direction aligned, and the strip fiber material 4 a is wound around the shaft core 3 so that the fiber direction is perpendicular. It is formed by compressing, impregnating a silica sol-based inorganic adhesive or the like and drying. As a result, the fiber layer 4 is formed with a high surface hardness so that it hardly deforms even when pressed from the surface side, and the scattering of fibers is reduced.

  4 is a side sectional view of the main part of the opposing seal roll 1, FIG. 5 is a side sectional view of the main part of the opposing seal roll 1 in a state where the nip pressure is applied, and FIG. It is principal part side sectional drawing of the seal roll 1 of the state clamped.

  A plurality of annular grooves 6 are formed in the fiber layer 4 at appropriate intervals along the direction of the axis 3. By forming the groove portion 6, a portion of the fiber layer 4 sandwiched between the adjacent groove portions 6 is formed as an annular block portion 5 so as to be elastically deformable.

  In the illustrated example, the groove 6 is engraved in the fiber layer 4 in a direction perpendicular to the shaft core 3. Here, the right-angle direction does not need to be exactly 90 ° with respect to the axis 3, and means that the direction is substantially perpendicular. A plurality of grooves 6 are formed by, for example, a diamond cutter.

  The groove portions 6 are engraved at an appropriate depth D at substantially equal intervals in the direction of the axis 3 of the fiber layer 4. Thereby, the fiber layer 4 is divided into block portions 5 having an appropriate width W1 in the direction of the axis 3 while leaving an appropriate thickness on the side of the axis 3. Specifically, the groove 6 is preferably engraved so that the width W1 dimension of the block 5 and the depth D dimension of the groove 6 are approximately 1: 2. More specifically, it is preferably engraved so that the width W1 of the block 5 is about 1 mm and the depth D of the groove 6 is about 2 mm.

  Since the width W1 of the block portion 5 in the axial center 3 direction is formed to be narrower than the width of the entire fiber layer 4 in the axial core 3 direction, the block portion 5 can be elastically deformed by a pressing operation from the surface. It is formed in hardness. Note that the groove 6 is also formed at both ends of the fiber layer 4 in the axial core 3 direction, so that the width of the fiber layer 4 in the axial core 3 direction is narrower and can be elastically deformed by a pressing operation from the surface. It is formed to a certain degree of hardness.

  Moreover, the elastic deformation of the block part 5 is accept | permitted because the groove part 6 has the appropriate width W2. Since the elastic deformation of the block portion 5 is allowed, the surface hardness of the fiber layer 4 is lower than that in a solid state. As described above, when the width W1 of the block 5 is about 1 mm and the depth D of the groove 6 is about 2 mm, the width W2 of the groove 6 is preferably about 0.1 mm.

  Next, the operation of the seal roll 1 according to this embodiment will be described. In producing the seal roll 1, the fiber core 4 is wound around the shaft core 3 by compressing the belt-like fiber material 4 a, impregnated with an inorganic adhesive, and dried. A plurality of annular grooves 6 are engraved at appropriate intervals in the direction. As a result, an annular block portion 5 is formed between the adjacent groove portions 6.

  The fiber layer 4 is formed of a heat-resistant and wear-resistant fiber material, and the fiber layer 4 is formed in a substantially perpendicular direction to the shaft core 3, so that the surface hardness is high, and the fibers are scattered and worn. Can be reduced and processing accuracy can be secured.

  In addition to this, in the present embodiment, the fiber layer 4 is formed with a plurality of grooves 6 in the direction perpendicular to the axis 3 in the fiber layer 4, so that the fiber layer 4 has the axis 3 than the groove 6 and the fiber layer 4. It is mainly composed of the block portion 5 having a narrow direction width. Thereby, even if it is the said fiber layer 4 with high surface hardness, each block part 5 can be elastically deformed. And since the groove part 6 allows the elastic deformation of the block part 5, the surface of the block part 5 can sink, the surface hardness of the fiber layer 4 whole can be reduced, and a sealing performance can be made favorable. .

  In the present embodiment, the fiber layer 4 uses a heat-resistant fiber material such as Kevlar kv100 (registered trademark) or Zylon (registered trademark), but is not limited thereto.

In this embodiment, the wear resistance is set to about 1 mm / year and the density of the fiber layer 4 is set to 0.45 to 0.75 g / cm ^3. However, the present invention is not limited to this. It is set as appropriate.

  In the present embodiment, the groove 6 is engraved so that the width W1 of the block 5 × the depth D of the groove 6 is approximately 1: 2. However, the present invention is not limited to this. It is optimally set according to various conditions such as the surface hardness of the fiber layer 4 and the thickness of the material M. Similarly, the width W1 of the block portion 5 and the depth D of the groove portion 6 are not limited to 1 mm × 2 mm. Further, the width W2 of the groove 6 is not limited to 0.1 mm.

  In the present embodiment, the general seal roll 1 has been described. However, a water-cooled seal roll 1 that passes water through the shaft core 3 may be used.

  Next, a modification of the seal roll 1 according to this embodiment will be described. In this modification, as shown in FIGS. 7 and 8, the groove 6 is formed to be inclined with respect to the shaft core 3.

  Specifically, the groove 6 is formed by engraving the fiber layer 4 in a spiral. The groove 6 is cut with a diamond cutter or the like.

  Since the groove portion 6 is formed to be inclined with respect to the shaft core 3, the block portion 5 adjacent thereto is similarly inclined with respect to the shaft core 3. As a result, as illustrated in FIG. 9, the block portion 5 can have a habit of determining the tilting direction when a nip pressure is applied thereto. This makes it possible to set in advance the direction in which the block unit 5 is tilted, and it is possible to prevent the block unit 5 from being fatigued by changing the tilting direction.

  Moreover, when the nip pressure is applied to the inclined block portion 5, there is a problem that the material M is displaced when the material M passes between the opposing seal rolls 1. In such a case, for example, by passing the seal roll 1 by devising such that the inclination direction of the groove 6 is reversed left and right with the approximate center in the direction of the axial core 3 as the boundary, the groove 6 passes through the seal roll 1. It is possible to prevent the displacement and meandering of the material M to be performed.

  Next, a second embodiment of the seal roll 1 according to the present invention will be described. In the present embodiment, only differences from the first embodiment will be described.

  In the present embodiment, when the belt-like fiber material 4a is wound around the shaft core 3, the groove portion 6 is formed by providing an appropriate gap between the belt-like fiber materials 4a adjacent to each other in advance. And the block part 5 is formed of the strip | belt-shaped fiber material 4a pinched | interposed into the groove part 6. FIG.

  Specifically, a belt-like fiber material 4a impregnated with an inorganic adhesive is wound around the shaft core 3 in a spiral shape. At this time, as shown in FIG. 10A, a thin plate spacer 8 is sandwiched between the fiber material 4a and the belt-like fiber material 4a and compressed and dried. The spacer 8 is formed of a material such as Teflon (registered trademark) that is difficult to adhere the adhesive to the surface. The spacer 8 is removed after the fiber layer 4 is dried, as shown in FIG. Thereby, the block part 5 and the groove part 6 can be formed in the fiber layer 4 without cutting the fiber layer 4. In this case, the angle of the block 5 with respect to the direction of the axis 3 can be freely set according to the width of the belt-like fiber material 4a, the winding method, and the insertion angle of the spacer 8.

  In the present embodiment, the fiber layer 4 is formed by spirally winding the belt-like fiber material 4 a around the shaft core 3. However, as shown in FIGS. 11 and 12, the disk-shaped fiber material 4b having a large outer diameter and the disk-shaped fiber material 4c having a small outer diameter are alternately inserted into the shaft core 3, and compressed and dried. It may be formed. Also by this, the groove part 6 can be formed without cutting the fiber layer 4.

  Next, a modification of the seal roll according to the second embodiment will be described. In this modification, as shown in FIG. 13, a spacer 11 or the like is provided in the approximate center in the direction of the axis 3, and the belt-like fiber material 4 a is then inclined and wound around the approximate center. As a result, the material M passing between the opposing seal rolls 1 can be made to have an equal left / right force for shifting in the inclined direction of the block portion 5, and the displacement and meandering of the material M can be prevented. .

  Next, a preferred embodiment of the seal roll device according to the present invention will be described. As shown in FIG. 14, the seal roll device 2 is formed by arranging the seal roll 1 so as to face an entrance / exit part of a horizontal type or vertical type continuous furnace.

  The seal roll 1 is preferably disposed so that an appropriate nip pressure is applied to the material M and can be sealed even where the material M does not pass. For example, when the thickness of the material M is about 2 mm, it is desirable to arrange the material M so that the fiber layer 4 on one side can sink about 1.5 mm. This is because, in order to keep the inside of the furnace airtight, a nip pressure of about 0.5 mm sinking to one side of the fiber layer 4 where the material M does not pass is applied.

In this way, in addition to the portion through which the material M passes, the block portion 5 that is elastically deformed escapes into the groove portion 6 due to the nip pressure also in the portion through which the material M does not pass. In addition, the groove 6 can be closed, and the airtightness of the entire continuous furnace can be maintained. By maintaining the airtightness of the continuous furnace, it is possible to perform delicate temperature control of the furnace atmosphere and prevent leakage of harmful gases such as H ₂ and CO to the outside.

It is a one-side sectional view which shows 1st Embodiment of the seal roll concerning this invention. It is the X section enlarged view which shows the fiber layer surface of the seal roll of FIG. It is explanatory drawing which shows the shaping | molding step of the fiber layer of FIG. It is a principal part sectional side view which shows the state of a fiber layer when the seal roll of FIG. It is principal part sectional drawing which shows the state of a fiber layer when a nip pressure is applied to the seal roll of FIG. FIG. 6 is a cross-sectional side view of a main part in a state where a material is sandwiched between the seal rolls of FIG. 5. It is a one-side sectional view which shows the modification of the seal roll concerning 1st Embodiment. It is the Y section enlarged view which shows the fiber layer surface of the seal roll of FIG. It is a principal part expanded sectional side view which shows the state of a fiber layer when a nip pressure is applied to the seal roll of FIG. It is a sectional side view which shows 2nd Embodiment of the seal roll concerning this invention. It is explanatory drawing which shows arrangement | positioning of the disk-shaped fiber material of the seal roll concerning 2nd Embodiment. It is a principal part enlarged view which shows the state which arranged the disk-shaped fiber material of FIG. It is a sectional side view which shows the modification of the seal roll concerning 2nd Embodiment. It is a principal part sectional side view which shows suitable one Embodiment of the seal roll apparatus concerning this invention. It is explanatory drawing which shows the conventional seal roll with low surface hardness. It is explanatory drawing which shows the conventional sealing roll with high surface hardness.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seal roll 2 Seal roll apparatus 3 Shaft core 4 Fiber layer 5 Block part 6 Groove part

Claims (4)

In a seal roll in which a fiber layer is formed around the shaft core,
The fiber layer is provided with an annular groove formed at an appropriate interval in the axial direction and an annular block formed between the adjacent grooves so as to be elastically deformable. Seal roll.   The seal roll according to claim 1, wherein the groove is formed to be inclined with respect to the shaft core. In the seal roll device that arranges the seal roll formed with a fiber layer around the shaft core facing the entrance / exit part of the material of the continuous furnace, and sandwiches the material to make the inside of the furnace airtight,
The fiber layer is provided with an annular groove formed at an appropriate interval in the axial direction and an annular block formed between the adjacent grooves so as to be elastically deformable. Seal roll device.   The seal roll device according to claim 3, wherein the groove is formed to be inclined with respect to the shaft core.

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