Expander rolls for textile machinery

Abstract

Expanding rollers for textile machinery, the inner ring of the deep groove ball bearing is fixed in the middle of the round tube, the plastic washer is inserted into the aluminum wheel frame, the inner ring of the cylindrical roller bearing is bonded and fixed with the plastic washer, and the cylindrical roller The upper end surface of the bearing outer ring is placed on the step of the center hole of the aluminum wheel frame. The plastic gasket has the upper surface entity exposed to the aluminum wheel frame. The angle between the axis line of the plastic gasket and the horizontal plane is 1 to 5 degrees; The expansion unit group on the left side of the groove ball bearing is composed of several expansion units, the plastic gaskets of the two adjacent expansion units, the upper surface of one plastic gasket is inserted into the ring groove of the other expansion unit, The plastic washer of each expansion unit is glued and fixed on the round pipe, and the upper surface of each plastic washer of the expansion unit group on the left is facing the deep groove ball bearing. It can protect the cloth from being damaged when it is expanded to the greatest extent, and at the same time, different materials can be used for the outer covering layer of the cloth of different materials.

Description

[0001] Technical field: [0002] The invention relates to the technical field of textile machinery, in particular to an expanding roller used in textile machinery. [0003] Background technique: [0004] See figure 1 As shown, the structural principle of the ordinary expanding roll: left-handed threads A2 and right-handed threads A3 are symmetrically distributed from the center to both sides on the surface of the roll body A1, and when the substrate contacts its surface, it is inclined to both sides of the roll surface. The threads create friction, and the angled threads spread the substrate to both ends, allowing the substrate to flatten. Its weak point is: 1, cloth when contacting with expanding roller, left-handed thread A2 and right-handed thread A3 are metal hard material, left-handed thread A2 and right-handed thread A3 contact with cloth easy to wear cloth. 2. Ordinary spreader rolls are rigid rolls and are one-time molded products. Once damaged, they cannot be repaire...

AI Technical Summary

Problems solved by technology

Its shortcomings are: 1. When the cloth is in contact with the expanding roller, the left-handed thread A2 and the right-handed thread A3 are metal hard materials, and the left-handed thread A2 and the right-handed thread A3 are in contact with the cloth and the cloth is easy to wear

2. Ordinary expanding rollers are rigid rollers, which are one-time molded products. Once damaged, they cannot be repaired.

3. The expansion angles of left-handed thread A2 and right-handed thread A3 on common expanding rollers are generally small

4. Due to the different characteristics of different fabrics, if they are all in contact with the rigid left-handed thread A2 and right-handed thread A3 during expansion, it is obviously not the most ideal state and needs to be improved.

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