Clutch structure of sewing machine

Abstract

The invention relates to a clutch structure of a seamer, which comprises a drive mechanism, a swing mechanism, two clutch groups and two connecting bars. The drive mechanism is provided with a lower shaft and a cam, and the cam is driven to rotate by the lower shaft, a pivoted arm is interlocked to lead an actuating ring to do intermittent movement in the left and the right directions, when the actuating ring is moved to the left side, each locating detent is pushed, and the locating detent is led to rotate to push each roller, and the roller is led to roll from a narrow position to a wide position, and a rotor and an outer shield ring are turned from an imminent state to a release condition, and the rotor and the outer shield ring are led to do relative rotating motion. At the same time, the roller and the outer shield ring are led to be mutually clamped because of friction by the rotor on the right side which is effected by the roller and a resilient, and at the same time, two connecting bars are respectively, mutually and moveably combined with connecting rod pins of the two clutch groups, and the lower shaft is led to do continuous rotating motion, and the connecting bars are led to do synchronous up-and-down motion, and the motions are used to intermittently drive a feed shaft to do co-intermittent rotating motion in turn, and the invention is lead to rotate to feed. In addition, the time sequences of the two connecting bras are changed relative to the lower shaft, the invention can feed in the opposite direction.

Description

technical field [0001] The invention relates to a clutch structure of a sewing machine, in particular to a clutch structure of a sewing machine suitable for a high-head type roller sewing machine feeding drive device. Background technique [0002] The clutch mechanism of the sewing machine feeding drive device with the utility model patent certificate number M313685 in Taiwan, China, mainly consists of a friction disc, a driving device, an inner clutch disc, an outer clutch disc, and a connecting rod mechanism; among them: Friction disk, the back side of the disk body is provided with a bushing, on the bushing there are slots opposite to each other, the disk body is provided with a first friction surface and a second friction surface at the edge of the inner side, and the first friction surface The first friction surface and the second friction surface are covered with a layer of friction medium, the first friction surface is arranged vertically on the outer disk edge in a r...

AI Technical Summary

Problems solved by technology

[0003] However, although the clutch mechanism of the above-mentioned sewing machine feeding drive device can produce intermittent directional rotation of the feeding shaft, so that the feeding shaft can achieve the effect of feeding, the overall components are relatively complicated and the structure is not stable enough. Based on actual use and innovative research and development, this paper Inventors Pursue Excellence

Images