Patent ID: 8037914

Claim:
A laminating apparatus for laminating an article, said laminating apparatus comprising: an entrance channel; and a thickness detecting mechanism for detecting a thickness of said article entering said entrance channel, and comprising: a retractable probe member partially embedded into said entrance channel, wherein a position shift is resulted from said thickness of said article when said retractable probe member is pressed by said article; a retractable encoding disc member comprising an encoding disc, a rotating shaft and an elastic element, wherein said rotating shaft is connected to said encoding disc and aligned with a center rotating axle line of said encoding disc, and said elastic element is connected to one end of said rotating shaft, wherein said elastic element is a coil spring connected to said rotating shaft, an elastic energy is stored in said coil spring when said rotating shaft is rotated in a first direction, and said rotating shaft is driven to rotate in a second direction opposite to said first direction when said elastic energy is converted into a kinetic energy; a cable connected to said retractable probe member and fixed on and wound around said rotating shaft, wherein said position shift of said retractable probe member displaces said cable causing said rotating shaft to rotate which renders rotation of said retractable encoding disc member; and a sensing element disposed beside said encoding disc for detecting a rotation amount of said encoding disc, wherein said thickness of said article is calculated according to said rotation amount detected by said sensing element.