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Sewing machine

A sewing machine and needle technology, applied to sewing machine components, needle holders for sewing machines, sewing equipment, etc., can solve the problems of oil leakage, no oil return, and contamination of sewn products, and achieve smooth operation and prevent contamination. , the effect of preventing leakage

Active Publication Date: 2006-07-05
YAMATO SEWING MASCH MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned structure where only the anti-leakage material 5 is provided cannot reliably prevent the lubricating oil from being taken out of the top outer surface 4 of the syringe 1 by the action of the tooth fork 2
And there is no structure that can return the lubricating oil taken out once in the syringe 1, so the leakage of lubricating oil cannot be prevented
Leakage of lubricating oil may cause problems such as staining of sewing products
Moreover, although the amount of oil leakage is small when the lower shaft of the sewing machine rotates at a low speed of about 3500rpm, as the rotation speed increases, in order to make the movement of each mechanism of the sewing machine smooth, it is necessary to increase the amount of oil supply, and the amount of oil leakage increases accordingly. increase, so it is more likely to stain the sewn product

Method used

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Experimental program
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Embodiment Construction

[0031] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] 1 is a cross-sectional view of a structure near a needle cylinder 11 of a sewing machine 10 according to an embodiment of the present invention viewed from a direction approximately perpendicular to the axis of a carriage 14, that is, approximately horizontal. figure 2 It is a perspective view schematically showing the sewing machine 10. FIG. 3 is a plan view showing the syringe 11 . FIG. 4 is an exploded perspective view showing the structure in the vicinity of the syringe 11. As shown in FIG. The sewing machine 10 is, for example, an industrial sewing machine such as a feed type longitudinal sewing machine, and is a sewing machine in which a lower shaft serving as a part of a drive system is driven at a high speed of about 5000 rpm. A housing 12 of the sewing machine 10 includes a housing body 13 , a bed 14 , an arm 15 , and an oil ...

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Abstract

To provide a sewing machine capable of surely preventing the leakage of a lubricating oil in the cylinder. The sewing machine (10) comprises a lubricating oil supply-retrieve means 60 having a sealing part 65, an absorbing-holding part 66 and a retrieving part 67. The lubricating oil supply-retrieve means 60 supplies a lubricating oil to a cylinder 11 and retrieves the same from its tip end outer surface 20. As a result, a lubricating oil adhering to an inside-cylinder sewing mechanism 52 is retrieved by the lubricating oil supply-retrieve means 60. Since the lubricating oil having been carried out by the inside-cylinder sewing mechanism 52 can be retrieved, it is possible to surely prevent the leakage of the lubricating oil in the cylinder 11.

Description

technical field [0001] The present invention relates to a sewing machine, and more particularly relates to a structure for preventing leakage of lubricating oil. Background technique [0002] Figure 9 It is a perspective view schematically showing a needle cylinder (silinda) 1 provided in a conventional sewing machine. The structure of the sewing machine is as follows: the cloth feed rack 3 connected to the tooth fork (send り platform) 2 accommodated in the needle cylinder 1 and covered by the needle cylinder cover 7 is used to push the sewing object along the cloth feeding direction, and at the same time, the outside of the illustration The needle reciprocates up and down to sew. The tooth fork 2 can be displaceably supported in an elliptical motion in the syringe 1 . Lubricating oil is supplied so that the fork 2 can move smoothly. [0003] In addition, an oil leakage preventive material 5 made of felt that is in contact with the tooth fork 2 from the upper side is pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B71/00
CPCD05B55/14D05B57/30D05B69/02D05B69/30D05B71/02
Inventor 林田高幸射场隆史
Owner YAMATO SEWING MASCH MFG CO LTD