JP2521903Y2 - High density felt cylinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a small-diameter to large-diameter high-density felt cylinder used for a conveying roller or a polishing roller of a rolled steel plate or an aluminum profile.

(Prior Art) In an aluminum processing plant, an extruded material immediately after exiting a die is first supported by a plurality of conveying rollers, and then sent to a predetermined conveying machine or post-processing equipment. The extruded material has a high temperature close to the melting point of aluminum (660 ° C) immediately after it comes out of the die, and if it comes into direct contact with the surface of the transport roller, the surface will be damaged. Felt tube was fitted. Since this felt tube cannot be manufactured unless the shaft dimensions are unique to the needle punch machine, the product variation is low, the unit price is high, the tube cannot be partially replaced, and it is difficult to determine the appropriate replacement time. As felt rolls are beginning to be used. On the other hand, in steel processing plants, after pickling and annealing rolled strip steel, it is continuously plated by passing it through an electrolytic layer in which tin is dissolved, and further, the plating surface is heated to give a gloss, Develop layers. It is preferable that the steel sheet immediately after plating is gradually cooled in order to sufficiently develop the alloy layer. For this reason, use of a felt roll as a transport roll has been studied. This felt roll fits a piece of felt cut into a disk from a felt sheet into a mandrel,
It is common to manufacture by laminating many sheets.

(Problems to be Solved by the Invention) A conventional felt roll uses a felt material cut into a disk shape from a felt sheet as it is, fits a large number of the felt materials into a mandrel, and compresses a laminated cylindrical body from a side end by a press. If the compressive force is too strong, the central portion of the laminate is spread radially to form a barrel-shaped laminated cylinder, which is not preferable as a transport roll in shape, and is likely to collapse during use.
Conversely, if the compressive force is saved to prevent the formation of a barrel, the rigidity of the laminated cylindrical body will not be sufficient, and the durability as a transport roll will be insufficient.

The present invention has been proposed to improve the above-mentioned problems, and has as its object to provide a high-density felt cylinder suitable as a conveyance roller for a surface-treated steel sheet or an aluminum shape.

(Means for Solving the Problems) In order to achieve the above object, in the high-density felt cylinder or felt roll according to the present invention, a felt sheet having a thickness of about 0.5 to 4 mm in which various fiber webs are integrated by needle punching. Is used.
The fibers constituting the disc felt material 2 may be appropriately selected according to the application, and one or more natural or synthetic fibers or a mixture of both fibers is used. For example, for the transport roller of surface-treated steel sheet or aluminum profile, heat-resistant fiber aramid fiber alone or mixed with aramid fiber and carbon fiber,
The aramid fiber is paraphenylene terephthalamide fiber or metaphenylene isophthalamide fiber, and the like is preferable in terms of high-temperature heat resistance and the like, and the latter can be used in a relatively low-temperature place. The carbon fibers used in combination include flame-resistant fibers having relatively low heat resistance and the like, and the content and quality may be appropriately selected according to the place of use. on the other hand,
Polyester fiber may be used for the felt material 2 for transporting the aluminum shape material or the like in a low temperature state, and wool or the like may be used for the polishing roll.

The disc felt material 2 is obtained by polymerizing one or more sheets,
As shown in FIG. 1, the felt material is sewn annularly along the inner periphery thereof with a reinforcing thread, and the felt material is fixed in a superposed state. The reinforcing yarn 4 is a high-strength yarn that does not cut even during compression work,
For example, Kevlar filament (trade name) or the like is used.
The reinforcing thread 4 is generally sewn close to the inner periphery of the disc felt material 2, but when cutting a vertical groove on the peripheral surface of the cylindrical body after molding, a sewing position such that the reinforcing thread 4 is not cut at the time of cutting. It is desirable to set

When sewn annularly with the reinforcing thread 4, a low-melting-point resin film or nonwoven fabric having the same inner diameter as the disc felt material 2 may be interposed, if desired. This film needs to have a lower melting point than the fibers constituting the felt material 2 and has a property of fusing the felt material 2 by heating. Therefore,
This film is made of a low-melting resin such as polyethylene, polypropylene, or EVA. If the felt material 2 is made of high-temperature heat-resistant fiber, polyester can be used. After laminating the felt material 2 and compressing it, the film is heated at a temperature higher than the melting point of the low-melting resin, and the low-melting resin is melted and adhered. Keep shape.

As shown in FIG. 2, one or a plurality of polymerized disc felt materials 2 are inserted into an appropriate mandrel 8 and laminated, and the polymer 10 is strongly compressed by a press 12 from a side end thereof. The height of the polymer 10 is drastically reduced. Compressed laminate 14
The resin is impregnated and dried on the inner peripheral surface or the whole while the compressed state is maintained by an appropriate fixing means. The resin in the resin processing is selected according to the use of the cylindrical body 14. The fixed disks 16, 16 (4th
Figure) can be welded or pinned. Also, during compression, the disk felt material 2 slightly shrinks inward in the radial direction, and in the compressed cylindrical body, in order to strongly tighten the peripheral surface of the mandrel, the peripheral surface of the mandrel pipe 18 (FIG. 5) is prevented from rotating. If 20 is formed, a felt roller in which the compression laminate is fixed to the pipe can be obtained.

As a finishing process, the outer peripheral surface of the cylindrical body is polished to obtain a high-density felt cylindrical body. The diameter of the felt cylinder of the present invention is determined according to the outer diameter of the mandrel 8, and generally has a diameter of about 35 mm.
It can be manufactured up to dimensions of about mm to 3m. The felt cylinder of the present invention has a density of 0.3 to 0.8 g / cm ³ from a felt sheet having a density of about 0.05 g / cm ³ , for example, and has a wide range of applications.

(Function) The felt cylindrical body according to the present invention sews the reinforcing yarn 4 in an annular shape along the inner periphery of the disc felt material 2, and when the reinforcing yarn 4 is sewn, the reinforcing yarn 4 is strongly compressed by the press 12.
The felt polymer 10 has a central portion that spreads outward in the radial direction and does not deform, resulting in an accurate cylindrical compression laminate 14. The compressed laminate is maintained in a compressed state as it is by an appropriate fixing means, or is simultaneously melted and bonded with a film of a low melting point resin sewn or impregnated and dried with the resin on the inner peripheral surface or the whole by the above-mentioned method. The exact cylindrical shape can be maintained even if the fixing means is removed.

(Example) Next, this invention is demonstrated with an Example.

Example 1 In order to produce a felt cylinder, a density of 0.05 g / cm ³ made of aramid fiber (trade name: Conex, manufactured by Teijin Limited) was used.
Use a 1.5mm thick felt sheet. This sheet is cut to obtain a disc felt material 2, which is sewn along a perimeter thereof with a sewing machine in an annular shape using a reinforcing thread 11 of Kevlar filament (trade name, manufactured by EI Dupont).

A large number of the disc felt members 2 are inserted into a fitting mandrel 8 (FIG. 3) having a diameter of 35 mm and laminated, and the front part 22 of the mandrel can be removed with a screw. The press 12 comprises a cylindrical pressing portion 24, and a disk 26 fitted on the mandrel 8 comes into contact with the lower end of the pressing portion. The side edge of the felt polymer 10 is strongly compressed by the press 12, and the disk 26 is fixed by screwing or pinning at the compression position shown by the dashed line in FIG. If this screwing or pinning is not possible, a retaining bolt 30 may be mounted between the disks 26,28. By this compression processing, the height of the felt polymer 10 is drastically reduced, and the height of the laminate 14 is approximately
50cm. Further, the entire laminate 14 is impregnated with an acrylic resin and dried, and the shaft front 32 is removed, and the shaft 32 is screwed to the center of the disk 26. Finally, after polishing the outer peripheral surface while rotating the laminate 14 while supporting the shafts 32 and 34, the mandrel 8 and the disks 26 and 28 are removed.
A 0.5 g / cm ³ high density felt cylinder with an outer diameter of 60 mm is obtained.

In order to fit the felt cylindrical body to the aluminum-made transport roller, the inner diameter of the cylindrical body may be set to be equal to or slightly larger than the roller diameter, and the cylindrical body may be pushed into the transport roller.

Example 2 In order to produce a felt cylinder, 30% of aramid fiber (trade name Kevlar 29, manufactured by EI Dupont) and carbon fiber (mainly Pyromex, manufactured by Toho Rayon Co., Ltd.)
From 70%, a felt sheet having a density of 0.2 g / cm ³ and a thickness of 1 mm is used, and the sheet is cut to form a disc felt material.
Five disc felt materials are superimposed, and the inner periphery thereof is annularly sewn with a Kevlar filament reinforcing thread 11.

Plural sets of multi-layered disc felt materials are laminated by inserting them into a fitting mandrel 40 (FIG. 3) having a diameter of 35 mm. By pressing, the disk 42 is slid from the position indicated by the alternate long and short dash line in FIG. 3 to the position indicated by the solid line, and the side end of the felt polymer is strongly compressed by the press pressing portion. Standoff bolt 4 between discs 42 and 44
When the disk 6 is attached and the disk 42 is fixed, the height of the felt laminate 48 becomes about 50 cm. Next, the mandrel 40 is pulled out of the laminate 48, and an acrylic resin is applied to the inner peripheral surface of the laminate.
After impregnation, a pipe having substantially the same diameter as the mandrel is inserted, and a release agent is applied to the surface of the pipe. The laminate 48 is dried in this state, and after drying, the retaining bolts 46 are removed and the surface of the laminate 48 is polished to obtain a density of 0.5 g / cm ³ and an outer diameter of 65 mm.
To obtain a felt cylinder.

After pulling out the pipe, the felt cylinder can be fitted to a transport roll in the same manner as the felt cylinder of the first embodiment.

Example 3 In order to produce a large felt cylinder, a density of 0.2 from 30% of aramid fiber (Kevlar 29, manufactured by EI Dupont) and 70% of carbon fiber (mainly Pyromex, manufactured by Toho Rayon Co.) was used. Using a felt sheet having a thickness of 1.5 mm at g / cm ³ , the sheet is cut into a ring having a width of 50 mm to form a disc felt material. Three belt-like felt materials are polymerized, and the inner periphery thereof is sewn in an annular shape with a Kevlar filament reinforcing thread 11.

In order to manufacture a felt roller 50 as shown in FIG. 4 from a plurality of superposed disc felt materials, a pipe 58 having an appropriate detent on its outer peripheral surface is used as a fitting mandrel, and one end of the pipe is provided with one disk. 16 is fixed. A large number of sets of disc felt material are inserted through the pipe 58 and the side edges of the felt polymer are strongly compressed by pressing and the other disc 16 is welded or pinned in the compressed position and secured. During this compression, the felt polymer shrinks slightly inward in the radial direction,
In the compression laminated body 56, the pipe 58 is united with the compressed laminated body 56 by the above-described detent because the peripheral surface of the mandrel is strongly tightened. The entire laminate is impregnated with an acrylic resin and dried, and the surface thereof is polished to obtain a high-density felt roller 50 having a density of 0.5 g / cm ³ and an external system of 1500 mm.

This felt roller 50 can be used in a steel material processing plant as a transport roll for a heated steel sheet immediately after tin plating, and can slowly cool the steel sheet. If the laminate 56 is worn out, remove the other disk 16 and appropriately remove the disk 16. I just need to replace it.

Embodiment 4 In order to manufacture a felt roller 52 as shown in FIG. 5, a pipe 18 having a detent 20 formed on the outer peripheral surface is used as a fitting mandrel. A large number of the disc felt materials obtained in Example 1 are inserted through a pipe 18 having an outer diameter of 76 mm and an inner diameter of 65 mm, and compression treatment is performed in the same manner as in Example 1. During this compression, the felt polymer slightly shrinks inward in the radial direction, and the compressed laminate 54 strongly tightens the mandrel peripheral surface.
Are integrated with the compression laminate 54. Further impregnation and drying an acrylic resin to the whole of the stack 54, after polishing the surface of the laminate, and removal of the discs, the outer diameter at a density of 0.5 g / cm ³
A 100 mm high density felt roller 52 is obtained.

The felt roller 52 is integrated with the pipe 18 and can be used as a drive roller, a transport roller, or the like, and the operation of fitting a separate pipe with the roller can be omitted.
Although the detent 20 is a ridge in the axial direction in FIG. 5, instead of the ridge, it may be a mere protrusion or embossing of the entire outer peripheral surface.

Example 5 When three sheets of the disc felt material obtained in Example 1 were polymerized,
While interposing a polypropylene film of the same inner diameter,
The periphery is sewn in a circular shape with a reinforcing thread 4 of Kevlar filament (trade name, manufactured by EI Dupont).

As in the first embodiment, a plurality of polymerized disc felt materials are inserted into a mandrel 8 (FIG. 2) and laminated, and a mold release agent is applied to the mandrel. Next, the side edge of the felt polymer 10 is compressed by the press 12, and the disk 26 is fixed by screwing or pinning at this compression position. In this compressed state, the laminate 14 is heated to about 170 ° C. to melt the polypropylene film.
The bonding keeps the laminate 14 cylindrical after cooling. After the outer peripheral surface of the laminate 14 is polished, the disks 26 and 28 are removed, and the mandrel 8 is pulled out to obtain a density of 0.5 g / cm ^3.
Thus, a high-density felt cylindrical body having an outer diameter of 60 mm is obtained, and this cylindrical body can also be used for the same applications as in Example 1.

(Effect of the Invention) The felt cylinder or the felt roll according to the invention is:
Since a disk felt material in which reinforcing yarns are sewn annularly along the inner periphery is used, a cylindrical body having a desired diameter can be manufactured quickly and easily as compared with a conventional felt cylindrical body using a dedicated machine. The cylindrical body of the present invention is preferably used as a transport roll of surface-treated steel sheet or aluminum shape because the central portion does not spread radially and becomes a substantially cylindrical shape without forming a barrel-shaped laminated body. Excellent durability as a transport roll even in an environment. When the cylindrical body of the present invention is fitted on a transport roll, the surface is highly dense and the surface is homogeneous, so that the surface of the surface-treated steel sheet or the aluminum profile in a high-temperature heating state is hardly damaged and the durability is high. Are better.

[Brief description of the drawings]

FIG. 1 is a plan view of a disc felt material used in the present invention, and FIG.
The figure is a longitudinal sectional view showing the manufacturing process of the felt cylinder of the present invention, FIG. 3 is a side view showing another manufacturing process of the felt cylinder, FIG. 4 is a side view showing an example of the felt roller of the present invention, FIG. 5 is a perspective view showing another example of the high density felt roller. 2 ... Disc felt material, 4 ... Reinforcing thread, 8 ... Mandrel, 10
…… Felt polymer, 12… Press, 14… Compressed laminate.

Claims (2)

(57) [Scope of request for utility model registration] 1. One or a plurality of circularly punched disk felt materials are superimposed, and a high-strength reinforcing thread which is not cut even during compression work is sewn along the inner periphery thereof in a circular shape. A high-density felt that is formed by laminating and compression-molding a felt polymer. At least the inner surface of the felt polymer is impregnated and dried with a resin during compression processing to maintain a cylindrical shape, and then the outer surface is polished. Cylindrical body. 2. One or a plurality of circularly punched disc felt materials are superimposed, and a high-strength reinforcing thread which is not cut even during compression work is sewn along the inner periphery thereof in a circular manner, and the reinforcing thread forms a circular loop. When sewn, a felt cylindrical body is formed by laminating this felt material in a cylindrical shape and compressing it by interposing a film or nonwoven fabric of a low melting point resin having the same inner diameter as the disc felt material. Heat at a temperature higher than the melting point of the resin film or nonwoven fabric to melt the low melting point resin.
A high-density felt roller that keeps the obtained laminate in a cylindrical shape by bonding, and then polishing the outer peripheral surface.