Triangular-cross-section felting needle provided with spiral needle blades

Abstract

The invention discloses a triangular-cross-section felting needle provided with spiral needle blades. The triangular-cross-section felting needle comprises a needle tip, the needle blades, a needle waist and a needle handle. The cross section of each needle blade is triangular and comprises three edges, and the blades spirally rotate along the axis of the needle. Multiple felting hooks are evenly distributed on the three edges of each needle blade and comprise hook barbs and hook grooves. The felting hooks face the needle tip, and arc angles are formed at two ends of each felting hook. The bottoms of the hook grooves are uneven faces, and the uneven faces are composed of circular-arc faces. The triangular-cross-section felting needle provided with the spiral needle blades is high in felting efficiency and low in cost, a fiber entanglement force is large when the needle is used, a non-woven fabric is high in tensile strength, dispersed in stress point and good in heat dissipation performance, and the proportion of residual broken stitches is small.

Description

technical field [0001] The invention relates to the field of acupuncture technology, in particular to a triangular-section needle with spiral needles. Background technique [0002] The needle loom is a device that repeatedly punctures the fiber web with a thorn with a triangular or other shaped cross-section and a barbed hook on the edge. Its working principle is as follows: the cross-formed fiber web is very fluffy when it is fed into the needle loom, and it only has a certain strength due to the cohesion between fibers, but the strength is very poor. When using a fiber web, the barbed hooks on the needles will drive the fibers on the surface and sub-surface of the fiber web, and move from the plane direction of the fiber web to the vertical direction of the fiber web, causing the fibers to shift up and down, and the fiber pair that shifts up and down The fiber web will be squeezed to a certain extent, so that the fibers in the fiber web will be compressed. [0003] At pr...

AI Technical Summary

Problems solved by technology

When the barbed hook passes through the fiber at a high speed of 700-1200 times per minute, and the cloth output speed remains unchanged, the needle will break, the fiber will be brittle, and the entanglement force will not be ideal.

[0005] There are many right angles, acute angles and planes on the barbs on the traditional needles. These right angles, acute angles and planes have many defects on the fibers held: right angles and acute angles will increase the sliding resistance of the fibers between the barbed hooks, and increase the weaving process. The resistance of the needle will cause too many broken needles; the plane will cause the contact surface between the hook and the fiber to be large and the resistance will be large. When the fiber and the hook move and rub at a relatively high speed, a large amount of heat will be generated. When the heat reaches a certain level, It will lead to the decomposition of low-melting point chemical fiber components and the reduction of the initial hardness of the hook part, resulting in a decrease in the physical and chemical indicators of the chemical fiber and premature wear and failure of the needle

[0006] Therefore, conventional triangular needles can no longer adapt to the requirements of advanced technology for more slender fiber non-woven fabrics

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