Hemming machine for sewing trousers bottom

Abstract

The invention provides a special streamlined lockstitch for sewing cuff, wherein a cloth feed tugboat assembly of an integral machine head comprises a vertical shaft component which is vertically arranged and whose both ends are provided with angular wheels, an upper shaft component and a lower shaft component which are horizontally arranged and are respectively geared with the angular wheels. The upper shaft component is connected with a synchronous shaft component through a coupling device, the synchronous shaft component is arranged between the upper shaft component and the lower shaft component, the synchronous cloth feed is achieved through a synchronous shaft, and needle hauling and needle cutting are avoided. The coupling component comprises an eccentric strap, a connecting bar component and a needle distance adjuster, the eccentric strap is a cam structure, both ends of the connecting bar component are respectively and fixedly connected with the eccentric strap and a needle distance adjusting screw rod in a chute of the needle distance adjuster, the spacing of needle distance can be adjusted through changing the position of a screw, and a gear wheel is not needed to be changed, the operation is simple. A lever component and a restoring spring component are arranged in a knee control-foot pressing component, the force transferring structure in operation is more reasonable and labor-saving. An oil pump is arranged in an oil way, which can meet the requirements of the lubrication of an integral machine, and can lower the damage ratio of components in the machine.

Description

technical field [0001] The invention relates to industrial sewing machine technology, in particular to a roller foot machine for sewing trouser legs. Background technique [0002] Existing industrial sewing machines for trouser legs include integral machine head, platen, tripod, wire rack, wire transmission parts and motor. The structure of the tugboat is complicated, not only the mechanical failure occurs frequently, but also it is difficult to synchronize the cloth and the needle when the cloth is running, and the phenomenon of needle dragging and broken needles often occurs. phenomenon, but still failed to fundamentally solve the phenomenon of needle dragging and broken needles. In addition, when the needle pitch of the processed cloth needs to be adjusted, the required needle pitch density gear must be replaced and the pendulum needle frame adjusted to adjust the needle pitch density, which reduces the work efficiency and shortens the service life of the machine. In th...

AI Technical Summary

Problems solved by technology

[0002] Existing industrial sewing machines for trouser legs include integral machine head, platen, tripod, wire rack, wire transmission parts and motor. The structure of the tugboat is complicated, not only the mechanical failure occurs frequently, but also it is difficult to synchronize the cloth and the needle when the cloth is running, and the phenomenon of needle dragging and broken needles often occurs. phenomenon, but still failed to fundamentally solve the phenomenon of needle dragging and broken needles

In addition, when it is necessary to adjust the needle pitch of the processed cloth, it is necessary to replace the required needle pitch gear and adjust the pendulum frame to adjust the needle pitch, which reduces the work efficiency and shortens the service life of the machine

In the prior art, there is no oil pump in the lubricating oil path of the roller foot machine, and the oil is only dipped into the oil cup through the belt, which cannot supply enough oil when the machine is running at high speed, which will cause the machine to fail due to lack of oil when running at high speed The machine is damaged, and the oil circuit of the currently used roller foot machine cannot reach the shuttle bed, and it is manually lubricated. If there is negligence, the shuttle bed will be damaged in a short time, and the machine has to be replaced with a new shuttle bed to make the machine work normally.

In the prior art, the presser foot structure of the roller foot machine is heavy, the operator must use both feet to work to make the machine run, and the hook structure is complicated

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