Needle bar linkage sliding device of double-needle longitudinal color-changing computer tricks machine

Abstract

The invention relates to a needle bar linkage sliding device of a double-needle longitudinal color-changing computer tricks machine. The needle bar linkage sliding device of the double-needle longitudinal color-changing computer tricks machine comprises a sliding block base, a needle bar linkage sliding block and a driving connecting rod, wherein a longitudinal concave sliding groove is formed inthe middle of the sliding block base; the root of the needle bar linkage sliding block is slidably connected with the longitudinal concave sliding groove and slides up and down along the longitudinalconcave sliding groove; a shaft hole is formed in the root of the needle bar linkage sliding block in the Y direction; the driving connecting rod is arranged on the outer side of the shaft hole; a pinshaft with an axial cover penetrates through the lower hole of the driving connecting rod and the shaft hole of the needle bar linkage sliding block; the root of the pin shaft is locked by a set screw; an upper shaft crank is connected to the inside of an upper hole of the driving connecting rod; the upper shaft crank rotates to drive the driving connecting rod to reciprocate up and down; and thedriving connecting rod drives the needle bar linkage sliding block to move up and down in the longitudinal concave sliding groove of the sliding block base through the pin shaft. The noises generatedwhen the rotating speed of a main shaft is 2500 revolutions per minute can be reduced. The needle bar linkage sliding device of the double-needle longitudinal color-changing computer tricks machine is reasonable and simple in structure and convenient to manufacture, and meanwhile, the cost is reduced.

Description

[technical field] [0001] The invention belongs to the technical field of sewing equipment, in particular to a needle bar linkage sliding device for a double-needle longitudinal color-changing computerized pattern machine used in the sewing industry. [Background technique] [0002] At present, the longitudinal color-changing computerized pattern machine has a special sliding device in the needle bar linkage mechanism, which includes a sliding base, a needle bar linkage slider and a V-shaped plug iron. The sliding device is driven by the upper shaft. The rotating motion of the crank in the mechanism drives the drive connecting rod and connects the linkage slider through a pin shaft to reciprocate up and down. The Y direction head of the linkage slide is provided with a card slot. One of the needle bars can be reciprocated up and down in the slot of the slider. This kind of sliding device has high requirements on the manufacturing accuracy and installation adjustment of the th...

AI Technical Summary

Problems solved by technology

This kind of sliding device has high requirements on the manufacturing accuracy and installation adjustment of the three components. When the manufacturing accuracy and installation adjustment of the parts cannot meet the requirements, noise will appear during the movement, especially when the speed is above 2500 rpm.

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