This invention relates to a clearer apparatus applied to a draft roller for use as a drafting apparatus for a spinning machine equipment, and more particularly to a clearer apparatus which consists of a clearer in the form of a plate which can remove cotton waste or the like on a draft roller with certainty using a clearer pad member formed from rubber, a synthetic resin material or the like.
A clearer apparatus for a bottom draft roller of a drafting apparatus is already known wherein a clearer pad member comprising of leather, artificial leather, natural rubber, synthetic rubber, laminated non-woven fabric or the like which is cut into a fragment is used and held on a support frame in the form of a plate formed with a length substantially equal to a length between roller stands such that a portion of the clearer pad member is projected outwardly from the support frame until the outwardly projected portion contacts with a peripheral face of a drafting portion of a draft roller. Also the applicant of the present patent application has proposed a clearer of the pad type and a supporting apparatus for a clearer of such construction in Japanese Patent Laid-Open Application No. Sho 63-35831 and Japanese Utility Model Laid-Open Application No. Sho 63-24279.
While it is known that such a clearer of the pad type as described above can exhibit a superior cleaning effect comparing with a conventional clearer of the rotary type, the clearer of the pad type has a problem that, after continuous use for a long period of time, cotton waste and so forth will accumulate on a projected portion of the clearer pad member or the like.
In order to prevent such accumulation, various solutions have been proposed including means wherein a support frame or the like is rocked to change the orientation angle of the same and another means wherein the position at which the projected portion of the clearer pad member contacts is moved in a circumferential direction of the draft roller. However, the solution which only involves a change of the angular orientation of the support frame or involves a movement of the contacting position of the projected portion of the clearer pad member cannot remove accumulated substance actively from the draft roller and consequently cannot achieve sufficient removal of accumulated substance.
In addition, the solution which involves a change of the angular orientation of the support frame has another problem that the mounting structure for the support frame and so forth become complicated and the operation for maintenance and so forth are troublesome.