Rotary shuttle oil-supplying device

A technology for supplying oil to a rotary hook and a rotary hook shaft, which is applied in the field of sewing machines, can solve the problems of complex structure, increased cost, space occupied by an oil pump, etc., and achieves the effects of reducing manufacturing cost, saving space and simple structure.

Active Publication Date: 2013-05-01
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power used by these oil supply pumps is generally output from the sewing machine spindle or an additional power source is used, which is...

Method used

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  • Rotary shuttle oil-supplying device

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment, see figure 1 —8: A rotary hook oil supply device, including a shaft sleeve 11 and a rotary hook shaft 10, the rotary hook shaft 10 runs through the shaft sleeve 11 and can rotate at a high speed in the shaft sleeve 11, wherein the rotary hook shaft 10 and the shaft The sleeve 11 is equipped with an oil pump mechanism, and the oil pumped by the oil pump mechanism supplies oil to the rotary hook through the oil delivery mechanism on the shaft sleeve 11 and the rotary hook shaft 10. The tail of the rotary hook shaft 10 is equipped with a bearing 20, and the bearing Circlips 21 are arranged on both sides of 20, and circlips 21 fix the bearing 20 to prevent the hook shaft 10 from moving axially; the outer diameter R of the bearing 20 is in interference fit with the inner diameter r of the shaft sleeve 11, and the inner diameter r1 of the bearing 20 is in c...

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Abstract

The invention belongs to the technical field of sewing machines and particularly relates to a rotary shuttle oil-supplying device for realizing automatic oil supply by high-speed rotation of a rotary shuttle shaft. The rotary shuttle oil-supplying device comprises a shaft sleeve and the rotary shuttle shaft, wherein the rotary shuttle shaft penetrates through the shaft sleeve and can rotate at high speed; the rotary shuttle shaft rotates at high speed to enable an oil pumping mechanism on the shaft sleeve to pump oil and supply oil to the rotary shuttle by the shaft sleeve and an oil conveying mechanism on the rotary shuttle shaft; a bearing is arranged at the tail part of the rotary shuttle shaft; the two sides of the bearing are provided with clamping springs which are used for fixing the bearing to prevent the rotary shuttle shaft from jumping axially; the outer diameter of the bearing is in interference fit with the inner diameter of the shaft sleeve, and the inner diameter of the bearing is in interference fit with the outer diameter of the rotary shuttle shaft so as to prevent the radial jumping of the rotary shuttle shaft. The rotary shuttle oil-supplying device has the advantages that a plunger spring arranged in a through hole is matched with a groove to form a simple oil pump under high-speed rotation of the rotary shuttle shaft and finish piston type oil pumping; and the structure is simple and compact, the space is saved and the manufacturing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, in particular to a rotary hook oil supply device which realizes automatic oil supply through the high-speed rotation of the rotary hook shaft. Background technique [0002] Conventionally, in the rotary hook portion of a sewing machine, lubricating oil is supplied to the mating portion of the rotary hook and the bobbin, so that the rotary hook rotates uniformly with respect to the bobbin. There is an oil pump that extracts lubricating oil from the oil tank at the base of the sewing machine for forced oil supply, or uses the capillary phenomenon or surface tension between the oil tank and the oil supply point to supply oil to the oil supply point of the hook, that is, through the oil The core is connected so that the lubricating oil is transferred in the oil core, and the way of supplying oil from the oil tank to the feed point. The power used by the oil pumps of these oil supply methods ...

Claims

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Application Information

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IPC IPC(8): D05B71/02
Inventor 李创祝书伟杨斌应振华
Owner JACK SEWING MASCH CO LTD
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