Non-spindle device of high-speed sewing machine

Abstract

The present invention relates to a shuttle-peg-free device for high-speed sewing machine, wherein, a shuttle sleeve is free of shuttle peg; the center of a rotating shuttle frame has a small hole; an external bottom thread lead assembly is fixed at one end of a fixing plate; a bottom thread importing assembly is fixed at the other end of the fixing plate; the fixing plate is fixed on the desk of the sewing machine; the axis of a lower axle has a through-hole, through which a thread-conveying belt is passed; one end of the thread-conveying belt is a circular handle, and the head of the other end is a sphere, which has a small hole and a thread-guarding groove perpendicular to the small hole; a lower-axle bevel gear is fixed on the lower axle; the lower axle supports the head of the sewing machine above; a vertical axle supports one side of the sewing machine head, and the bevel gear thereof engages with the lower-axle bevel gear; an oil pump body is fixed below the sewing machine head;an oil-pump bevel gear is fixed at the axle end of an oil-pump wheel and engaged with the lower-axle bevel gear. The present invention has the advantage that the bottom thread can be provided continuously. With visual and simple structure, convenient operation and maintenance as well as high efficiency and adaptability, the present invention saves resources, lowers the cost and improves the product quality.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a bobbin-free device for a high-speed lockstitch sewing machine. Background technique [0002] As we all know, at present, high-speed lockstitch sewing machines are equipped with a bobbin case with a bobbin in the rotary hook, so there is limited bobbin storage in operation, and repeated winding delays working hours and low efficiency. The occurrence rate of defective products increases due to dismantling and modification. Random winding will not only increase the power load, but also increase the resistance of the transmission system, resulting in a great loss of power useful work and energy waste, accelerating mechanical loss, and standby winding The wire increases the reactive power consumption, and the two winding methods increase the frequency of mechanical maintenance and the number of replacement parts, thereby increasing the cost. Contents of the invention [0003] The main purpose ...

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Problems solved by technology

[0002] As we all know, at present, high-speed lockstitch sewing machines are equipped with a bobbin case with a bobbin in the rotary hook, so there is limited bobbin storage in operation, and repeated winding delays working hours and low efficiency. The occurrence rate of defective products increases due to dismantling and modification. Random winding will not only increase the power load, but also increase the resistance of the transmission system, resulting in a great loss of power useful work and energy waste, accelerating mechanical loss, and standby winding The reactive power consumption of the wire increases, and the two winding methods increase the frequency of mechanical maintenance and the number of replacement parts, thus increasing the cost

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