Sewing machine rotating shuttle frame and manufacturing method thereof

Abstract

A shuttle frame in rotating shuttle of sewing machine is formed by connecting a first cylindrical shell and a second cylindrical shell, wherein, one end of the first cylindrical shell is provided with a thread hook; one end of the second cylindrical shell is sealed up; the other ends of the first cylindrical shell and the second cylindrical shell are mutually fixed; a circle of convex rail is arranged on the outer circumference of the first cylindrical shell; the first cylindrical shell is formed by plastic materials, while the second cylindrical shell is formed by metal materials; a solid metal shuttle core handle is arranged on an axis line inside the second cylindrical shell. The present invention also relates to a method for manufacturing the shuttle frame in the rotating shuttle of sewing machine, wherein, the shuttle frame in the rotating shuttle of sewing machine is divided into two parts to be processed independently and then assembled to form a complete shuttle frame. The present invention saves materials, reduces processing programs, decreases manufacture cost, simultaneously lightens the weight of the shuttle frame, reduces wear, prolongs life-span, is low in sound during the operation of the rail part, needs no lubricating oil to be added, and cannot pollute processed fabrics.

Description

Technical field: [0001] The invention relates to the field of machinery, in particular to a sewing machine, in particular to a rotary hook of a sewing machine, in particular to a hook frame in the rotary hook of a sewing machine and a manufacturing method thereof. Background technique: [0002] The rotary hook is a key component in the sewing machine. It is used to hook the upper thread on the sewing machine needle to rotate, and to go around the bottom thread in the bobbin case bobbin in the rotary hook to form a stitch. The rotary hook is composed of a shuttle bed (outer shuttle) and a shuttle frame (inner shuttle). The concave track in the shuttle bed and the convex track on the shuttle frame cooperate between the shuttle bed and the shuttle frame. In the prior art, the hook frame of the rotary hook is an integrated steel structure, which is completely processed from a metal round bar with a diameter of 30 mm and a length of 30 mm. The ratio of the finished product to th...

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Problems solved by technology

[0003] The object of the present invention is to provide a shuttle frame in the rotary hook of a sewing machine. The shuttle frame in the rotary hook of a sewing machine needs to solve the waste of material and complex processing technology in the prior art when the shuttle frame with a steel integral structure is processed. question

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