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Buttonhole sewing machine

A sewing machine and buttonhole technology, which is applied to sewing machine components, needle holders for sewing machines, sewing equipment, etc., can solve the problems of many transmission links, large transmission space, and less compact structure.

Inactive Publication Date: 2009-12-23
浙江胜佳特种缝制设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common disadvantages of the prior art are: there are many transmission links, the transmission space is large, the structure is not compact, and the cumulative gap error is not small

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0013] see figure 1 , figure 2 , Figure 4 and Figure 5 , a buttonhole sewing machine, which includes a casing 8, an upper casing 9, a machine shaft 25, a needle bar 26 for installing an inner needle, a cloth feed table that moves in an x-y horizontal coordinate system and a looper under the cloth feed table, the machine The shaft 25 drives the needle bar 26, and the needle bar 26 moves up and down to pierce the cloth and forms the seam of the buttonhole with the looper. The swing needle cam 1 is arranged at the front end of the machine upper case 9, and the swing needle cam 1 drives a fork-shaped reciprocating rod 2 To move up and down, the fork-shaped reciprocating rod 2 is hinged to a swing rod mechanism 13 through a connecting rod 4, and the rear end of the swing rod mechanism 13 is hinged to a shift lever 16, and the shift fork on the shift ro...

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Abstract

A buttonhole sewing machine comprises a frame, an upper frame, a boss rod, a needle bar for arranging an internal needle, a movable feed table with an x-y horizontal coordinate system and a curved needle below the feed table, the boss rod drives the needle bar, the needle bar moves up and down for punching and forms a buttonhole seam with the curved needle, a needle vibrating cam is arranged on the front end part of the upper frame and drives a fork reciprocating lever to move up and down, the fork reciprocating lever is articulated with a feed bar mechanism by a connecting rod, the rear end of the feed bar mechanism is articulated with a shifting rod, a shifting fork on the shifting rod is articulated with a needle vibrating slide block to cause the needle vibrating slide block to move up and down, and a trapezoid flume on the needle vibrating slide block promotes the needle bar to horizontally move, thus realizing needle vibrating motion. The needle vibrating mechanism has compact structure, reduces driving space, transmission links and accumulated clearance errors and has more stable transmission.

Description

technical field [0001] The invention relates to a buttonhole sewing machine, in particular to the improvement of the needle swing mechanism of the buttonhole sewing machine. Background technique [0002] Usually the needle bar movement of the chain stitch button (button) hole sewing machine is driven by two mechanisms, namely the needle bar up and down movement mechanism and the pendulum movement mechanism, and their structural forms are different. Such as: Chinese patent once disclosed a kind of " round head keyhole sewing machine " (Japan, publication number CN1924142A, open day 2007.3.7), comprising: the needle bar that installs sewing needle, the needle bar that makes this needle bar move up and down moves up and down mechanism, a needle swing mechanism for swinging the needle bar, a needle bar rotating mechanism for turning the needle bar around its axis, and a looper base for synchronously rotating the looper base supporting the looper with the rotation of the needle b...

Claims

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Application Information

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IPC IPC(8): D05B3/06D05B55/14
Inventor 石嘉禾
Owner 浙江胜佳特种缝制设备有限公司
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