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Process for manufacturing rotating shuttle inner shuttle bottom supporting structure

A manufacturing process and bottom support technology, which is applied in the manufacturing process field of the bottom support structure of the inner hook of the rotary hook, can solve problems such as the inability to meet the manufacturing needs of the rotary hook, and achieve the effects of improving production efficiency and production quality, high hardness, and convenient manufacturing

Active Publication Date: 2011-04-13
NINGBO YINZHOU YONGYAO SEWING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the rotary hook has a wide range of applications, the manufacturing method disclosed in the above patent and the existing commonly used manufacturing process cannot meet the manufacturing needs of the rotary hook.

Method used

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  • Process for manufacturing rotating shuttle inner shuttle bottom supporting structure
  • Process for manufacturing rotating shuttle inner shuttle bottom supporting structure
  • Process for manufacturing rotating shuttle inner shuttle bottom supporting structure

Examples

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Embodiment Construction

[0026] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1a to Figure 3 Shown is the structural representation of the present invention.

[0028] The reference signs therein are: rotary hook inner hook blank 1, strip plate 1a, support plate 1b, central axis 1c, cylindrical side wall 1d, guide rail 1e, platform 1f, hollow hole 2.

[0029] Such as Figures 2a to 2c As shown, the rotary hook inner shuttle of the present invention includes a cylindrical side wall 1d, an open end located at the upper end of the cylindrical side wall 1d, and a bottom located at the lower end of the cylindrical side wall 1d. A strip plate 1a is formed on the bottom of the hook in the rotary hook, and a central axis 1c is formed on the strip plate 1a. A guide rail 1e is formed on the outer wall of the cylindrical side wall 1d in the circumferential direction.

[0030] Such as image 3 As shown, the manufa...

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Abstract

The invention discloses a process for manufacturing a rotating shuttle inner shuttle bottom supporting structure, which comprises the following steps of powder molding, sintering and blast sanding, wherein in the step of powder molding, iron-based alloy powder is prepared into a rotating shuttle inner shuttle blank by using a metallurgy powder molding method; a strip-shaped plate is prepared at the bottom of the rotating shuttle inner shuttle blank, and supporting plates are respectively arranged between one side of the strip-shaped plate and a side wall of the rotating shuttle inner shuttle blank and the other side of the strip-shaped plate and the side wall of the rotating shuttle inner shuttle blank respectively; the rotating shuttle inner shuttle blank is subjected to a step of punching molding after the steps of sintering and blast sanding; in the step of punching molding, the supporting plates at the bottom are punched and separated from the rotating shuttle inner shuttle in a punching mode. In the process for manufacturing the rotating shuttle inner shuttle bottom supporting structure, a rotating shuttle inner shuttle is manufactured by the powder metallurgy technology, and the supporting plate structure is prefabricated, so that a product does not deform during sintering and molding. Therefore, the sintered product has high hardness and strength and more uniform texture.

Description

technical field [0001] The invention relates to a manufacturing process of an inner shuttle of a rotary hook, in particular to a manufacturing process of a bottom support structure of an inner shuttle of a rotary hook manufactured by a powder metallurgy process. Background technique [0002] In the prior art, the structure of the rotary hook is relatively fine, and the billet is generally made by cold extrusion and turning and milling processes. The manufacturing process is complicated, the cost is high, and it cannot be mass-produced. [0003] Such as the title of the invention patent: shuttle frame in the rotary hook of sewing machine and its manufacturing method, patent application number: 200610117030.6, discloses a shuttle frame in the rotary hook of sewing machine, which is composed of a shell, and the shell is composed of a first cylindrical shell It is connected with a second cylinder, an open convex track is provided on the outer circumference of the first cylindric...

Claims

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Application Information

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IPC IPC(8): D05B57/26B22F3/16
Inventor 汪小勇李刚
Owner NINGBO YINZHOU YONGYAO SEWING MACHINERY
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