Driving hammer adjusting mechanism for button hole cutting device of buttonholing machine

Abstract

The invention relates to a driving hammer adjusting mechanism for a button hole cutting device of a buttonholing machine. The mechanism is applied to a sewing machine capable of adjusting the button hole cutting length. The mechanism comprises an upper unit and a lower unit. A driving hammer is arranged on the upper unit and is driven by a drive unit vertically to generate cutting action and is driven by an adjusting unit to generate horizontal displacement. The adjusting unit comprises a location block which is arranged on a drive unit, a sliding seat connected with the driving hammer is assembled by the location block movably, and the sliding seat is driven by a driving source to move horizontally. According to the mechanism, a cogged rail is designed on the sliding seat, a cogged bar connected with the driving source is meshed directly by the cogged rail, and accordingly, the number of members of the adjusting unit can be reduced, and the occupation of operation space of the buttonholing machine can also be 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 by adjusting the relative positions of the hammer and the cutter without replacing parts. 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 above-ment...

AI Technical Summary

Problems solved by technology

[0006] However, the deficiency of this kind of buttonholing machine is that the overall driving 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 increase also causes operational inconvenience

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