CN110863313B

CN110863313B - Fork-shaped needle

Info

Publication number: CN110863313B
Application number: CN201911111492.0A
Authority: CN
Inventors: 宋扬; 薛淞; 薛同乐
Original assignee: QINGDAO JINZUAN NEEDLES CO Ltd
Current assignee: QINGDAO JINZUAN NEEDLES CO Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2024-02-06
Anticipated expiration: 2039-11-14
Also published as: CN110863313A

Abstract

The invention provides a fork needle which comprises a needle rod, a transition section and a needle head working section which are sequentially connected, wherein the needle head working section comprises a needle body and a pre-leading-in needle point positioned at the end part of the needle body, a fiber leading-in port is formed in the side part of the needle body, a U-shaped fork opening connected with the fiber leading-in port is formed in the needle body, the fork opening is formed by a fiber leading-in surface extending part, a small leading-in needle point and the bottom of the fork opening, and a throat groove is formed in the extending direction of the transition section at the two sides of the bottom of the fork opening towards the rear. The invention is provided with two leading-in needle points, so that the fork openings and the needle bodies can drive fibers to smoothly penetrate through fabrics and fiber nets and enter the bristles of the brush at the bottom, thereby reducing the impact force on the bristles; the throat grooves at the two ends of the bottom of the fork opening can enable the fibers which are forked by the fork opening to be hidden in the throat grooves, and penetrate through the fabric net and the fiber net along with the needle body, so that the damage and fracture caused by direct friction between the fibers are greatly reduced.

Description

Fork-shaped needle

Technical Field

The invention relates to a device for producing clothing fabric, in particular to a fork-shaped needle which is specially used for producing carpets and processing ring-shaped surfaces.

Background

A layer of ring-shaped surface is required to be formed on an automobile carpet or a civil carpet, and the carpet has the functions of wear resistance, elasticity and less hair loss. In the production of carpets, the fibrous web is first needled with a triangular needle, a conical needle or the like to form a certain cohesion, and then the loop surface is processed with a fork-shaped needle. The traditional fork needle head is a cylindrical working section, namely, symmetrical fork openings are opened at the top end of the working section along the central axis of the working section, two straight sides of the fork openings are parallel, and the top end of each fork opening is provided with two hemispherical needles with equal height.

The fork needle has the following defects:

1. on one hand, when the cloth and the fiber net are needled, strong impact force is generated on the bristles of the brush-shaped trawl board at the bottom, the bristles can be bent once every time of impact, and the bristles can be broken, lodged and even fail under the impact of high frequency; on the other hand, the needling resistance is larger, the equipment power is improved, the equipment operation load is increased, and the material manufactured by the equipment and the energy consumption in the production process are greatly wasted.

2. The fork openings of the traditional fork needle are formed along the central axis of the working section in an equal division manner and can only act on the fabric vertically, so that vertical raised piles or vertical loop fiber structures relative to the surface of the fabric are generated, and when the fabric is directly seen, the phenomenon of bottom leakage can be generated to influence the look and feel; in addition, the vertical impact on the fabric produces blanking effect similar to that in metal processing, the strength and traction of the fabric in each direction are increased, and the warp and weft of the fabric are broken and the strength is reduced.

Disclosure of Invention

In order to solve the defects that the existing fork needle has large needling resistance and is easy to damage fibers in the needling process, the invention provides an energy-saving needling needle which adopts the following technical scheme: the utility model provides a fork needle, includes needle bar, changeover portion and the syringe needle working segment that links to each other in proper order, syringe needle working segment includes the needle body and is located the leading-in needle point in advance of needle body tip, open the lateral part of the needle body has the fibre to lead into the mouth, open on the needle body have with the U type fork mouth that the fibre led into the mouth links to each other, the fork mouth is by fibre leading-in face extension, little leading-in needle point, fork mouth bottom formation, fork mouth bottom both sides are equipped with the throat to the changeover portion extending direction in rear.

In order to reduce the size of pinholes on the fabric, the inner side line of the small leading-in needle point is parallel to the central axis of the needle body.

In order to avoid fabric bottom leakage, an included angle of 1-35 degrees is formed between the throat groove and the central axis of the needle body.

Further, an included angle of 15-30 degrees is formed between the fiber leading-in surface and the central axis of the needle body.

Further, the bottoms of the fork openings are in transition with the throat grooves at the two ends and the small leading-in needle points through C-shaped surfaces.

Further, the width of the fork opening is consistent with the width of the throat groove, and is one third of the diameter of the needle body.

Further, the included angle of the pre-leading needle point is 25-35 degrees.

Further, the central axis of the throat slot coincides with the central axis of the needle body.

Further, the depth of the throat groove is 15-20% of the diameter of the needle body.

Compared with the prior art, the invention has the advantages and positive effects that:

the needle head working section of the fork needle comprises two leading-in needle points, so that the fork opening and the needle body can drive fibers to smoothly penetrate through fabrics and fiber nets and enter the bristles of the brush at the bottom, thereby reducing the impact force on the bristles and avoiding the bristles from breaking and lodging due to continuous bending. Due to the reduction of impact force, the power of the spindle motor is reduced, the noise is reduced, and the energy consumption is reduced and the working environment of workers is improved in the production process.

The throat grooves at the two ends of the bottom of the fork opening can enable the fibers which are forked by the fork opening to be hidden in the throat grooves, penetrate through the fabric net and the fiber net along with the needle body, greatly reduce the damage and fracture between the fibers caused by direct friction, enable the fibers which are forked by the fork opening to be protected to the greatest extent, and enable the fibers to form a ring-shaped fiber structure on the surface of the fabric more effectively.

Drawings

FIG. 1 is a schematic view of a needle working section according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along the direction A in FIG. 1;

FIG. 3 is a schematic view of a working section of a needle in accordance with a second embodiment of the present invention;

FIG. 4 is a schematic view of a fork needle according to an embodiment of the present invention;

FIG. 5 is a schematic view of a three-fork needle structure according to an embodiment of the present invention;

in the above figures: 1. a needle body; 2. a needle body central axis; 3. a throat central axis; 4. a fiber introduction surface; 5. pre-introducing a needle tip; 6. pouring the mixture into a needle point; 7. a throat; 8. a fiber inlet; 9. the bottom of the fork opening; 10. fork openings; 11. a needle bar; 12. and a transition section.

Detailed Description

In order that the above objects, features and advantages of the invention will be more readily understood, a further description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Example 1

The present embodiment proposes a double-lead-in fork needle specially used for producing carpets and processing ring-shaped surfaces, and referring to fig. 1 and 4, the double-lead-in fork needle comprises a needle bar 11, a transition section 12 and a needle head working section which are sequentially connected, the transition section 12 is of a two-section type, and the present embodiment adopts a structure that the needle bar, the transition section and the working section are sequentially thinned. The needle working section comprises a cylindrical needle body 1, and two leading-in needle points are arranged on the needle body: the needle body is provided with a U-shaped fork 10 at the side of the needle body, and a throat groove 7 is arranged at the two sides of the bottom 9 of the fork in the extending direction of the transition section at the rear.

The pre-leading needle point 5 is positioned at the forefront end of the needle head and is in a sharp streamline shape as a whole, and the included angles of the pre-leading needle point 5 are symmetrical along the central axis of the needle body, and the included angle of the embodiment is 25-35 degrees, so that the impact force of the needle head on the brush hair during working is greatly reduced while the strength of the needle head is ensured.

The small leading-in needle point 6 is different from the existing thorn hook on the needle and only plays a role of carrying fibers, and the inner side line of the small leading-in needle point 6 is parallel to the central axis of the needle body, so that the size of a fabric drilling hole can be effectively reduced, and the surface of the fabric is smoother.

Referring to fig. 2, the throat 7 is located at two sides of the fork bottom 9, symmetrically arranged, and is an overall elongated groove, the throat 7 is parallel to the needle central axis 2, i.e. the central axis 3 of the throat along its length direction coincides with the needle central axis 2. The width of the throat groove 7 is one fourth of the diameter of the needle body, and the depth of the throat groove is 15-20% of the diameter of the needle body, so that the strength of the needle body is ensured, fiber yarns grasped by the fork openings can be completely hidden, and the damage of the yarns is greatly reduced.

The U-shaped fork 10 of the embodiment is formed by the extension part of the fiber leading-in surface 4, the small leading-in needle tip 6 and the fork bottom 9. The width h2 of the fork opening is consistent with the width of the throat groove, the depth h1 of the fork opening is 25% to 30% of the diameter of the needle body 1, the bottom 9 of the fork opening is in transition with the two throat grooves 7, the extension part of the dimension guiding-in surface 4 and the small guiding-in needle tip 6 through C-shaped surfaces, and the smooth transition of each surface can better protect yarns. The fork opening bottom 9 is centrally positioned on the needle body central axis 2, so that the fork needle is ensured to be stressed stably during working and not to be bent due to high-frequency stress.

Example two

Referring to fig. 3, the difference from the first embodiment is that the central axis 3 of the throat slot and the central axis 2 of the needle body form a certain included angle α, the included angle α between the central axis 3 of the throat slot and the central axis of the needle body is equal to the included angle β between the fiber leading-in surface 4 and the central axis of the needle body, α is 30 °, so that the fibers which are forked out can have the same direction inclination, thereby generating a smooth feeling, and simultaneously better covering the bottom net, and eliminating the defects of bottom leakage, glue penetration, and the like.

Example III

Referring to fig. 5, the transition section 12 of this embodiment differs from other embodiments in that it has a tapered configuration that allows for greater deflection and resiliency of the fork needle during operation.

The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a fork needle, includes needle bar, changeover portion and syringe needle operating segment that links to each other in proper order, its characterized in that: the needle head working section comprises a needle body and a pre-leading-in needle point positioned at the end part of the needle body, a fiber leading-in port is formed in the side part of the needle body, a U-shaped fork opening connected with the fiber leading-in port is formed in the needle body, the fork opening is formed by a fiber leading-in surface extending part, a small leading-in needle point and a fork opening bottom, and a throat groove is formed in the extending direction of a transition section at the two sides of the fork opening bottom towards the rear; the included angle of the pre-leading-in needle point is 25-35 degrees; the central axis of the throat slot coincides with the central axis of the needle body.

2. The fork needle of claim 1, wherein: the inner side line of the small leading-in needle point is parallel to the central axis of the needle body.

3. The fork needle of claim 1, wherein: an included angle of 1-35 degrees is formed between the central axis of the throat groove and the central axis of the needle body.

4. The fork needle of claim 1, wherein: the included angle between the fiber leading-in surface and the central axis of the needle body is 15-30 degrees.

5. The fork needle of claim 1, wherein: the bottoms of the fork openings are transited with the throat grooves at the two ends and the small leading-in needle points through C-shaped surfaces.

6. The fork needle of claim 1, wherein: the width of the fork opening is consistent with the width of the throat groove, and is one quarter of the diameter of the needle body.

7. The fork needle of claim 5, wherein: the depth of the throat groove is 15-20% of the diameter of the needle body.