| 摘要 |
The invention relates to an upper drawing machine which comprises a body, a main feeding mechanism, a needle rod mechanism, a crochet transmission mechanism, a stopping mechanism, a feeding moving mechanism, a first driving mechanism and a control unit. The main feeding mechanism is arranged inside the body and is provided with a feeding shaft, and the feeding shaft is connected with the first driving mechanism and is provided with a feeding wheel; the feeding moving mechanism is provided with a moving frame, a presser foot wheel and a second driving mechanism, and the presser foot wheel is arranged on the moving frame and is linked with the second driving mechanism. Besides, signals of the first driving mechanism can be transmitted to the second driving mechanism by the control unit, so that relative rotation speeds of the two wheels can be controlled, and differential movement of the two wheels can be changed. The upper drawing machine has the advantages that the feeding wheel and the presser foot wheel of the upper drawing machine can be respectively provided with independent driving sources, accordingly, mechanical transmission components can be effectively simplified, users can directly and quickly adjust the rotation speeds via the control unit without optional adjusting tools, and the service convenience can be greatly improved. |
