Pressure bar assembly in drafting back zone of spinning machine

Abstract

The invention discloses a pressure bar assembly in a drafting back zone of a spinning machine. The pressure bar assembly is arranged between a top pin on a spinning cradle and the mounting position of a rear leather roller. The pressure bar assembly comprises a pressure bar, a support, a fastening screw, fastening nuts and a fastening block. The support is a bending U-shaped component, an opening of the support is sleeved downwards on the spinning cradle, and the support can move transversely along the spinning cradle. A straight groove is arranged in the upper end face of the spinning cradle along the drafting back-and-forth direction. The fastening screw penetrates through a hole in a support top plate and the straight groove in the upper end face of the spinning cradle, and is connected with the fastening block which is arranged in an inner cavity of the spinning cradle to fasten the support on the spinning cradle. A longitudinal straight groove is arranged in a support side plate. One end of the pressure bar is arranged in the longitudinal straight groove of the support side plate in an inserting mode and fastened through the fastening nuts. The other end of the pressure bar is overhung on the outer side of the support side plate in an extending mode. The pressure bar assembly is simple in structure, and the pressure bar can be moved in two directions, and fiber strands in the drafting back zone can be effectively controlled. Consequently, yarn evenness is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and relates to a component for increasing control points in the drafting rear area of ​​a spinning frame. Background technique [0002] In the drafting area of ​​the spinning frame, the non-controlled area in the post-drawing area of ​​the spinning frame is longer, and the variability of the fiber movement state increases the unevenness of the product. In order to solve this problem, the existing technology starts with increasing the control point of drafting in the rear area, adopts the method of adding pressure rods to establish a new additional friction force boundary, and reasonably regulates the strands in the rear area to achieve the goal of improving evenness. Purpose, the technical solutions disclosed in national patents 200520011534.0 and 200510063419.2 are to extend the holding part of the upper pin to the rear side, and add a pressure bar to the extension part. The purpose o...

AI Technical Summary

Problems solved by technology

In order to solve this problem, the existing technology starts with increasing the control point of drafting in the rear area, adopts the method of adding pressure rods to establish a new additional friction force boundary, and reasonably regulates the strands in the rear area to achieve the goal of improving evenness. Purpose, the technical solutions disclosed in national patents 200520011534.0 and 200510063419.2 are to extend the holding part of the upper pin to the rear side, and add a pressure bar to the extension part. The purpose of the whiskers in the stretching area, but the following problems were found during use: the position of the control point in the drafting area of ​​different varieties of whiskers changes accordingly, but the position of the existing pressure bar is fixed behind the holding point of the upper pin It cannot be adjusted according to the needs, so it will affect the use effect

In the technical solution disclosed in the national patent 200820076297.X, the control point can be designed by moving the position of the pressure bar back and forth, but according to the characteristics of the drafting area of ​​the spinning frame, if the pressure bar only moves back and forth, this movement will change The condition that the strands are fed along the tangential direction of the holding point will affect the evenness of the yarn, so this adjustability is meaningless

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