| 摘要 |
A thickness detection device comprises: a feed roller (130), a thickness detection unit (110,210) and a thickness measurement unit (120,220). The thickness detection unit (110, 210) comprises a detection roller (113, 213) which is contacted with the surface of the feed roller (130), a detection rotating shaft (111, 211) and a reflective board for thickness detection (112, 212); the thickness detection reflective board (112, 212) comprises an enlarging part (112a, 212a) and a bending part (112b, 212b) connected to one end of the enlarging part (112a, 212a); the detection roller (113, 213) and the detection rotating shaft (111, 211) are both arranged on the bending part (112b, 212b), a connection line of the axle centers of the detection roller (113, 213) and the detection rotating shaft (111, 211) is at an included angle with the enlarging part (112a, 212a) of the reflective board for thickness detection (112, 212); and the thickness measurement unit (120, 220) comprises a sensor used for measuring the distance that the enlarging part (112a, 212a) rotates around the detection rotating shaft (111, 211). |
