Oil supplying mechanism for rotating shuttle of sewing machine and sewing machine

Abstract

The invention belongs to the technical field of sewing equipment, and particularly relates to an oil supplying mechanism for a rotating shuttle of a sewing machine. The oil supplying mechanism is characterized in that the rotating shuttle is arranged at one end of a lower shaft; a front sleeve is arranged on the lower shaft, and sealing oil seals are arranged at two ends of the front sleeve of the lower shaft; an oil feeding hole and an oil returning hole are formed in the front sleeve of the lower shaft; the oil feeding hole is communicated with the oil returning hole; an oil supplying tube which is connected with an oil pump is connected to the oil feeding hole; the sealing oil seals are used for preventing lubricating oil from leaking outside from two ends of the front sleeve of the lower shaft; the oil feeding hole or the oil returning hole is communicated with a thread hole of an oil volume adjusting screw; the oil volume can be adjusted according to the position where the oil volume adjusting screw is screwed into the thread hole. According to the oil supplying mechanism, the sealing oil seals are embedded into the left end and the right end of the front sleeve of the lower shaft, so that the lubricating oil can be prevented from being leaked from the left side and the right side of the front sleeve of the lower shaft; in addition, one end of the oil feeding hole is sealed through the corresponding sealing oil seal; the oil returning hole is radially formed and can be used for directly returning oil into an oil receiver through an oil returning tube. Therefore, the lubricating oil can be prevented from leaking, and as a result, the purpose of clean sewing can be achieved.

Description

Technical field: [0001] The invention belongs to the technical field of sewing equipment, in particular to a rotary hook oil supply mechanism of a sewing machine and a sewing machine. Background technique: [0002] The rotary hook 1 needs to be oiled during work, and the structure of the existing rotary hook oil supply mechanism is as follows (such as figure 1 , figure 2 , image 3 shown): [0003] One end of the lower shaft 2 is provided with a rotary hook 1, and the rotary hook 1 and the lower shaft 2 rotate synchronously. A lower shaft front sleeve 3 is also arranged on the lower shaft 2 . The front cover 3 of the lower shaft is fixed on the base plate 4. An oil inlet 5 and an oil return hole 6 are axially arranged on the front sleeve 3 of the lower shaft. An oil return pipe is connected to the oil return hole 6 . The oil inlet hole 5 and the oil return hole 6 are located on both sides of the lower shaft 2 and communicated with each other. An oil volume adjustmen...

AI Technical Summary

Problems solved by technology

[0005] One is that there is no sealing structure for the oil supply and oil return, and the lubricating oil cannot be sealed during the working process. The connection and the two ends of the front sleeve 3 of the lower shaft leak outwards, thereby polluting the sewing material and failing to achieve the purpose of clean sewing

[0006] The second is that the oil volume adjustment screw 9 is located on the lower side of the base plate 4 and the inside of the oil pan, so it is impossible to adjust the oil volume conveniently and intuitively. When adjusting the oil volume, the base plate 4 must be pushed down to adjust the oil volume, which is inconvenient and slow to adjust; at the same time , after the bottom plate 4 is pushed down, there is also the possibility that the oil in the oil pan will leak out and contaminate the sewing material

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