Hammer adjusting mechanism of lockstitch button holder

Abstract

The invention provides a hammer adjusting mechanism of a lockstitch button holder. The hammer adjusting mechanism of the lockstitch button holder is applied to a sewing machine capable of adjusting the cutting length of buttonholes, and is provided with an upper side unit and a lower side unit, wherein the upper side unit is provided with a hammer; the hammer is vertically driven by a drive device to generate cutting action, and is driven by an adjusting device to generate horizontal-direction movement; the adjusting device is provided with a locating block arranged on the drive device, and is movably combined with a sliding seat connected with the hammer through the locating block; the sliding seat is driven by a drive source to horizontally move. According to the hammer adjusting mechanism of the lockstitch button holder, a group of cam mechanism is arranged between the sliding seat and the drive source and is provided with a rotary shaft, one end of the rotary shaft is connected with the drive source, the other end of the rotary shaft is assembled with a cam plate with a track, and a guiding pin designed on the sliding seat is arranged in the track in a penetrating way. Therefore, the quantity of components of the adjusting device can be simplified, and the occupation of the operation space of the lockstitch button holder can be also reduced.

Description

technical field [0001] The invention relates to a buttonhole machine for making buttonholes on sewn objects, in particular to a buttonhole machine capable of cutting buttonholes of different lengths only by adjusting the relative position of the hammer and the cutter without replacing parts. eyelet buttonhole machine. Background technique [0002] see Figure 1A and Figure 1B As shown, a known keyhole machine cutting buttonhole device has a fixed block 11 at one end of the shaft member 10 moving up and down, and a pneumatic cylinder 12 is built in the fixed block 11 and a cylinder that is linked with the pneumatic cylinder 12 The sliding mechanism 13 is provided so that the sliding mechanism 13 can automatically slide along the Y-axis direction, and a hammer 14 is fixed at the lower end of the sliding mechanism 13 . [0003] When this kind of buttonhole machine punches holes on the cloth, the hammer 14 is first moved laterally to the right to the position a1, and then the...

AI Technical Summary

Problems solved by technology

[0006] However, the lack of this kind of buttonhole machine is that the overall drive mechanism that drives the horizontal movement of the cutting block is bulky and has a large number of components. In addition, it also takes up most of the operating space between the head and the base, which not only causes manufacturing costs The rise also causes operational inconvenience

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