Cutting device

Abstract

A cutting device 6 comprises a cutting roller 7, a guide roller 8, and a pressing roller 9. The pressing roller 9 is provided with an outer peripheral portion 12 that includes a plurality of protrusions 16. A top portion 18 of each protrusion 16 has a contact surface 21 that contacts a strand ST. The area of each contact surface 21 is 0.03-15 mm2 <sp / >.

Claims

1. A cutting device comprising: a cutting roller for cutting a strand made of glass fiber; a guide roller for guiding the strand to the cutting roller; and a pressing roller for guiding the strand to the cutting roller together with the guide roller, wherein the pressing roller has an outer circumference including a plurality of protrusions, the tops of the protrusions have contact surfaces that contact the strand, and the area of ​​the contact surface is 0.03 mm². ２ Above 15mm ２ A cutting device characterized by the following:

2. The cutting device according to claim 1, wherein the outer circumference of the pressing roller is made of a metal member.

3. The cutting device according to claim 1, wherein the outer periphery of the pressing roller is provided with an oil-repellent coating.

4. The cutting device according to claim 2, wherein the protrusion is partitioned by a plurality of grooves.

5. The cutting device according to claim 2, wherein the height of the protrusion is 0.1 mm or more and 10 mm or less.

6. The cutting device according to claim 4, wherein the distance between two adjacent grooves is 1 mm or more and 5 mm or less.

7. The cutting device according to claim 4, wherein the protrusion is configured in the shape of a truncated square pyramid, the contact surface of the protrusion is configured in the shape of a square, and the length of one side of the contact surface is 0.1 mm or more and 2 mm or less.

8. The cutting device according to claim 7, wherein the groove portion has a bottom surface configured in a straight line, and the width of the bottom surface is 1 mm or more and 5 mm or less.

9. A cutting device comprising: a cutting roller for cutting a strand made of glass fiber; a guide roller for guiding the strand to the cutting roller; and a pressing roller for guiding the strand to the cutting roller together with the guide roller, wherein the pressing roller has an outer circumference including a plurality of protrusions, the tops of the protrusions have contact surfaces that contact the strand, and the contact surfaces are flat.

10. The cutting device according to any one of claims 1 to 9, wherein the pressing roller comprises a base portion that detachably supports the outer circumference.

Images