Lapper

Abstract

The invention relates to a lasting machine, which is composed of a main body, a main feeding mechanism, a needle bar mechanism, a needle hook transmission mechanism, a material stopper mechanism, a feeding moving mechanism, a first driving mechanism and a control unit, wherein the main feeding mechanism is arranged on Inside the main body, there is a feeding shaft connected with the first driving mechanism, and a feeding wheel is installed on the feeding shaft; The casters are interlinked with the second drive mechanism. In addition, the control unit transmits the signal of the first driving mechanism to the second driving mechanism to control the rotation rate between the two wheels and change the differential amount thereof. In this way, the feeding wheel and presser wheel of the lasting machine can have their own independent drive sources, which effectively simplifies the mechanical transmission parts, and the user can directly adjust the rotation speed directly through the control unit without any adjustment tools, greatly improving the convenience of use sex.

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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