JPH0596033U - Glass fiber cutting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a glass fiber cutting device which has a long service life of a rubber roll and which can perform a normal glass fiber cutting operation stably and efficiently. In a glass fiber cutting device which comprises a rubber roll 20 and a cutter roll 22 having a large number of cutting blades 21 pressed against the rubber roll 20, the glass roll is cut by supplying a glass fiber G between the rolls 20 and 22. Two
0 contains at least one kind of reinforcing fiber 23 selected from glass fiber and organic fiber.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting device suitable for cutting glass fibers to produce chopped strands and chopped strand mats.

[0002]

[Prior Art]

 Conventionally, as a device for cutting glass fibers, as shown in FIG. 2, a rubber roll 10 having a rubber layer made of a rubber material such as urethane rubber on the outer periphery thereof and a large number of cutting blades 11 pressed against the rubber roll 10 are provided. And a cutter roll 12, and a device for supplying and cutting glass fiber G, for example, roving or strands, between both rolls 10 and 12 is used.

[0003]

[Problems to be solved by the device]

 Generally, in such a glass fiber cutting device, the following inconveniences occur in the rubber roll as the glass fiber cutting operation is continued.

When the glass fiber is cut, the cutting blade of the cutter roll bites into the rubber roll, and as this is repeated, deep scratches are generated on the surface of the rubber roll by the cutting blade. Once a considerable damage is made, the cutting blade and the bending of the rubber roll, together with the influence of the bending, make it easier for the cutting blade to enter the groove of the scratch, and the depth and size of the cutting blade are rapidly increased. The fiber cannot be cut. Also, frictional heat is generated on the rubber roll due to friction with the cutting blade, the temperature of the entire rubber roll rises, and the rubber roll bursts due to the gas generated from the rubber material. May cause damage. Therefore, when such an inconvenience occurs, the rubber roll is directly repaired or replaced with a new rubber roll. As described above, in the conventional cutting device, the abrasion resistance and heat resistance of the rubber roll are not sufficient, and the uneven cutting length or the rupture of the rubber roll due to the scratch on the rubber roll described above causes the cutting work to start. Since it occurs within a short time, there arises a problem that normal cutting work of glass fiber cannot be stably and efficiently performed.

Therefore, an object of the present invention is to provide a glass fiber cutting device which has a long service life of a rubber roll and can perform a normal glass fiber cutting operation stably and efficiently.

[0006]

[Means for Solving the Problems]

 The present invention has been made in view of the above problems and objects, and is made up of a rubber roll and a cutter roll having a large number of cutting blades in pressure contact with the rubber roll. In the glass fiber cutting device described above, the rubber roll contains at least one kind of reinforcing fiber selected from a glass fiber and an organic fiber.

[0007]

[Action]

 In the present invention, the reinforcing fibers contained in the rubber roll reinforce the rubber roll, improve its wear resistance and heat resistance, and extend the service life of the rubber roll.

[0008]

【Example】

 Hereinafter, a glass fiber cutting device according to the present invention will be described based on embodiments.

FIG. 1 is an explanatory view of a glass fiber cutting device according to the present invention. The rubber roll 20, the cutting blade 21, and the cutter roll 22 themselves have the same configurations as those of a conventional glass fiber cutting device. Therefore, the cutting device according to the present invention was compared with the conventional cutting device. Urethane rubber was used as the rubber material of the rubber rolls of both cutting devices, and the diameter of the rubber roll and the thickness of the urethane rubber were the same. In the cutting device according to the present invention, the rubber roll 20 is a rubber roll containing 5% by weight of a reinforcing fiber 23 made of glass fiber having a fiber length of 40 μ to 6.0 mm in urethane rubber, 3.0 to 9. A rubber roll containing 5% by volume of a reinforcing fiber 23 made of a 0 mm fiber length Kepler fiber and a rubber roll containing 5% by volume of a reinforcing fiber 23 made of a polyester fiber having a fiber length of 3.0 mm to 9.0 mm were used. The conventional cutting device used a rubber roll consisting of urethane rubber only. When cutting was performed with the cutting length of the glass fiber G being 3.0 mm, in the conventional cutting device, about 4 hours after the start of the cutting operation, a cutting failure due to an increase in scratches on the rubber roll occurred, whereas In the cutting device according to the present invention, since the reinforcing fiber 23 improves the wear resistance and heat resistance of the rubber roll 20, the normal cutting operation of the glass fiber G can be continuously performed for about 10 to 11 hours. did it. Further, when the contact pressure of the cutting blade 21 against the rubber roll 20 was set to be twice as high as that in the above-mentioned embodiment, the cutting was carried out in the conventional cutting device about two hours after the start of the cutting work. In contrast to this, the cutting device according to the present invention could continue the cutting work for about 9 to 10 hours.

In this embodiment, urethane is used as the rubber material of the rubber roll, and Kepler and polyester are used as the reinforcing fibers made of organic fibers, but the present invention is not limited to these. Rubber rolls include, for example, natural rubber, isoprene rubber, styrene butadiene rubber, butyl rubber, ethylene / propylene rubber, chloroprene rubber, chlorosulfonated polyethylene nitrile rubber, polysulfide rubber, acrylic rubber, epichlorohydrin rubber, silicone fluoro rubber, nitrile hydroxide hydroxide. Various rubber materials such as rubber and vinylon, nylon, etc. can be used as the organic fiber.

[0011]

[Effect of the device]

 As described above, according to the glass fiber cutting device of the present invention, the service life of the rubber roll is longer than in the conventional case, and the normal glass fiber cutting work can be stably and efficiently performed.

[Brief description of drawings]

FIG. 1 is an explanatory view of a glass fiber cutting device according to the present invention.

FIG. 2 is an explanatory diagram of a conventional glass fiber cutting device.

[Explanation of symbols]

 10, 20 Rubber roll 11, 21 Cutting blade 12, 22 Cutter roll 23 Reinforcing fiber G Glass fiber

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI technical display location B29K 105: 06 (72) Creator Yoshiharu Takasugi 2-7-1 Harashi, Otsu-shi, Shiga Nippon Electric Co., Ltd. Inside Glass Co., Ltd. (72) Creator Masanori Matsubara 2-7 Harusan, Otsu City, Shiga Prefecture Inside NEC Glass Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A glass fiber cutting device comprising a rubber roll and a cutter roll having a large number of cutting blades in pressure contact with the rubber roll. A glass fiber cutting device, comprising at least one kind of reinforcing fiber selected from organic fibers.