Upper drawing machine

Abstract

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.

Description

technical field [0001] The invention relates to a sewing machine for sewing shoe (middle) soles, shoe uppers or leather and plastic parts, in particular to a lasting machine with independent driving sources for feeding wheels and presser wheels. Background technique [0002] There is a belt pulley on the right side of the conventional lasting machine, which can drive the main shaft to drive the needle bar shaft and the hook shaft to produce sewing action, and drive the feeding wheel to rotate intermittently for feeding, and the presser wheel is set as a pivot set on the lower edge of the mobile frame. The idler is set adjacent to the top of the feeding wheel; when sewing work pieces, the mobile frame can be pulled outward, and the two layers of work pieces can be sandwiched between the feed wheel and the presser wheel, so that the presser wheel follows the feeding The wheel rotates intermittently synchronously, allowing the user to hold both ends of the work piece with both ...

AI Technical Summary

Problems solved by technology

[0005] However, although this kind of lasting machine with auxiliary feeding mechanism has improved the lack of asynchronous feeding in the past, the entire transmission mechanism must extend from the inside of the lasting machine to the presser wheel, which often causes the design of the entire transmission mechanism to be complicated; Or, since the feeding and presser wheels are driven by pulleys, the differential motion between the two wheels must be adjusted through additional mechanical tools, which often causes inconvenience in use.

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