CN116356457A - Composite type carding wire for carding fibrilia bundles - Google Patents

Abstract

The invention discloses a composite combing needle for combing hemp fiber bundles, which comprises a combing needle main body, a comb supporting part and a comb tooth part. The combing needle main body includes a needle body and a Needle tip, the first end surface and the second end surface are respectively provided on both sides of the needle body, the first end surface is provided with a comb needle support part, and the second end surface is provided with a comb tooth part; the shape of the comb needle support part is A right-angled triangle, one right-angled side of the right-angled triangle is equal to the length of the first end face and the two are completely fitted, and the other right-angled side is perpendicular to the first end face and is on the same plane as the end face of the tail of the needle body; the comb tooth part It includes a tooth base arranged axially along the needle body and large teeth and small teeth arranged at intervals on the tooth base. The composite combing needle of the invention can realize the high-speed and high-yield carding process of the hemp fiber bundle, especially near the root of the hemp fiber bundle, and solve the problems that the combing needle is easily damaged and the carding effect is insufficient.

Description

A composite combing needle for combing hemp fiber bundles

technical field

The invention relates to a metal comb used for a needle curtain on a carding machine, in particular to a composite comb used for combing hemp fiber bundles, especially near the root of the hemp fiber bundle.

Background technique

The carding machine is used to card the fiber bundle to improve the state and structure of the fiber after carding and improve its spinnability. When carding the fiber bundle, one end of the fiber is held, and the other end is combed by the needles on the needle curtain of the carding machine to remove some non-spinnable impurities in the fiber bundle, such as mud, stones, iron wire, hard skin, hemp Chips, short fibers, etc. At present, it is used to comb hemp fiber bundles such as flax into hemp bundles, jute raw hemp bundles, etc., especially the combing needles used in the carding machines near the roots of these fiber bundles, such as the cleaning round needles and round tail flat needles used on combing machines. Although needles and U-shaped needles have strong puncture force and can penetrate the hemp layer, compared with fine impurities such as hemp dust and short fibers, their size is relatively large, which is not conducive to fully and meticulously combing the hemp layer, and it is difficult to This part of small impurities can be effectively eliminated, but it is easy to damage or even break when combing larger hard impurities such as mud, stones, and iron wires in the thicker hemp layer. The working life is not long, and it is difficult to adapt to hemp fiber bundles, especially hemp fibers. High-speed and high-yield requirements in the fiber bundle near-root carding process.

For this reason, the technical field needs to solve how to provide a kind of carding needle for combing hemp fiber bundles on the carding machine, especially near the root of the hemp fiber bundles, so that the small impurities in the hemp fibers can be fully and meticulously combed and efficiently eliminated , At the same time, it is not easy to damage the hard impurities in the thicker hemp layer.

Contents of the invention

The technical problem to be solved by the present invention is to provide a carding needle for combing the hemp fiber bundles, especially the roots of the hemp fiber bundles, which has good impurity removal effect and can fully and meticulously comb the hemp fiber bundles.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is to provide a kind of composite comb needle for combing hemp fiber bundle, comprising a comb needle main body part, a comb needle support part and a comb tooth part, and the comb needle main body part comprises The needle body and the needle tip arranged on the head of the needle body, the two sides of the needle body are respectively provided with a first end surface and a second end surface, the first end surface is provided with a comb support part, and the second end surface is provided with a comb tooth part ;

The shape of the comb needle supporting part is a right triangle, one right angle side of the right angle triangle is equal to the length of the first end face and the two are completely fitted, and the other right angle side is perpendicular to the first end face and is at the end face of the needle body tail. on the same plane;

The comb tooth part includes a tooth base arranged axially along the needle body and large teeth and small teeth arranged at intervals on the tooth base. The side of the large tooth close to the needle tip is the back of the large tooth, and the other side is the surface of the large tooth. The side of the small tooth close to the needle tip is the small tooth back, and the other side is the small tooth surface. The large tooth surface and the small tooth back, and the small tooth surface and the large tooth back are fused in the tooth base; the large tooth back and the large tooth surface extend separately A large tooth tip is formed, a tooth top is provided near the large tooth back, and a small tooth back and a small tooth surface respectively extend to form a small tooth tip.

Preferably, the needle tip is a conical-like shape with planes on both sides of the tail, and the planes on both sides are respectively the extensions of the first end surface and the second end surface on the corresponding planes; the needle body is a cylinder-like shape with planes on both sides Body shape, the planes on both sides are the first end face and the second end face; the needle point and the needle body are coaxially arranged; the thickness of the comb support part is completely fitted with the width of the first end face; the The thickness of the comb tooth part fits completely with the width of the second end surface.

Preferably, the length of the main body of the comb needle is 68-80 mm, preferably 76 mm; the length of the needle tip is 10-18 mm, the cone angle of the needle tip is 12°-23°, preferably 16 mm in length, and the cone angle 14°; the length of the needle body is 50-70 mm, preferably 60 mm, and the diameter of the needle body is 3-6 mm, preferably 4 mm.

Preferably, the apex angle of the needle support part close to the needle tip is 10°-15°, preferably 10°; the lengths of the first end surface, the second end surface, and the needle support portion are equal, all being 52-72mm, It is preferably 62 mm; the widths of the first end surface, the second end surface, and the needle support portion are equal, and are all 1-2 mm, preferably 1.5 mm.

Preferably, the tooth pitch of the comb tooth part is 1.5-5.5mm, preferably 4mm; between the large tooth surface and the adjacent small tooth back, and between the small tooth surface and the adjacent large tooth back are arc-shaped The shortest distance from the circular arc to the second end surface is the tooth base, and the radius of the circular arc is not less than one-seventh of the tooth pitch of the comb, preferably 0.5 mm.

Preferably, the angle formed by the large tooth back or the small tooth back and the axis of the needle body is the tooth back angle, and the angle is 30°-65°, preferably 45°; the large tooth surface or the small tooth surface The angle formed with the axis is the working angle, and the angle is 90°-130°. The working angle of the large tooth is preferably 100°, and the working angle of the small tooth is preferably 110°; The formed angle is the addendum angle, the angle is 30°-65°, preferably 55°; the angle formed by the small tooth surface and the small tooth back is the tooth tip angle, and the angle is 30°-70° , preferably 65°; the angle formed by the addendum and the axis is the addendum cut angle, and the angle is 0°-15°, preferably 10°.

Preferably, the tooth depth of the large tooth, that is, the vertical distance from the tip of the large tooth to the tooth base is 3.5-5.5 mm, preferably 4 mm; the tooth depth of the small tooth, that is, the vertical distance from the tip of the small tooth to the tooth base The vertical distance is 1.5-3.5mm, preferably 2.6mm.

Preferably, the tooth thickness of the large teeth or the small teeth is 0.25-1.5 mm, preferably 0.5 mm.

Preferably, the numbers of the large teeth and the small teeth are equal, and the first tooth on the comb tooth part closest to the needle tip is the large tooth.

More preferably, there are 7 large teeth and 7 small teeth.

The angles formed in the present invention generally refer to acute angles, except that the working angles are obtuse angles.

Compared with prior art, the beneficial effect of the present invention is:

The composite comb needle of the present invention is composed of three parts: a comb needle main body, a comb support part and a comb tooth part, wherein the comb needle main body has a strong penetrating ability to the hemp layer, and the setting of the comb needle support part can make the comb The main body of the needle has a stable and effective carding effect when combing thicker hemp fiber bundles, especially near the root of the hemp fiber bundles, and can effectively remove large hard impurities such as mud, stones, iron wires, etc., and strengthen the combing needle. The ability of the main body to resist damage and breakage improves the working life of the comb needles. At the same time, the comb teeth can fully and meticulously comb the fibers in the hemp layer, and can effectively remove fine impurities such as hemp dust and short fibers.

Description of drawings

Fig. 1 is the side view of composite comb needle overall structure in embodiment 1;

Fig. 2 is the front view of composite comb needle overall structure in embodiment 1;

Fig. 3 is the schematic diagram of the enlarged detail of the comb tooth part in embodiment 1;

Fig. 4 is the schematic diagram of the process that the compound type comb needle that is installed on carding machine needle plate combs jute fiber bundle among the embodiment 1;

Fig. 5 is the side view of composite comb needle overall structure in embodiment 2;

FIG. 6 is a schematic diagram showing enlarged details of the comb teeth in Embodiment 2. FIG.

Detailed ways

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

Example 1

As shown in Fig. 1-4, it is a kind of composite comb needle provided by this embodiment. As shown in Figures 1-3, the comb needle 15 includes a comb needle body part 1, a comb needle support part 2 and a comb tooth part 3. Needle tip 4, first end face 16 and second end face 17 are respectively provided on the both sides of described needle body 5, and comb support part 2 is provided on the first end face 16, and comb tooth part 3 is provided on the second end face 17; The shape of the comb support part 2 is a right triangle, one right angle side of the right angle triangle is equal to the length of the first end face 16 and the two are completely fitted, and the other right angle side is perpendicular to the first end face 16 and is connected to the needle body 5 afterbody. The end faces are on the same plane; the comb tooth part 3 includes a tooth base 6 arranged axially along the needle body 5 and large teeth 20 and small teeth 21 arranged at intervals on the tooth base 6. The large teeth 20 are close to the needle point 4 One side is the large tooth back 13, the other side is the large tooth back 14, the side of the small tooth 21 close to the needle point 4 is the small tooth back 24, and the other side is the small tooth back 25, the large tooth surface 14 and the small tooth back 24 , the small tooth surface 25 and the large tooth back 13 are fused in the tooth base 6; the large tooth back 13 and the large tooth surface 14 respectively extend to form a large tooth tip 8, and the large tooth back 13 is provided with a tooth top 12 near the large tooth tip 8, The small tooth back 24 and the small tooth surface 25 respectively extend to form the small tooth tip 9 . The needle point 4 is a conical shape with planes on both sides of the tail, and the planes on both sides are the extensions of the first end surface 16 and the second end surface 17 on the corresponding planes respectively; Cylindrical, the planes on both sides are the first end face 16 and the second end face 17; the needle point 4 and needle body 5 are coaxially arranged (that is, the central axis is the axis 18); The thickness fits completely with the width of the first end face 16 ; the thickness of the comb tooth part 3 fits completely with the width of the second end face 17 . In this embodiment, the length of the comb body 1 is 76 mm, the length of the needle point 4 is 16 mm, the length of the needle body 5 is 60 mm, the taper angle a1 of the needle point 4 is 14°, and the diameter of the needle body 5 is 4 mm. From the bottom surface 22 of the needle body 5, two parallel cut planes are cut along the axial direction of the needle body 5, thereby forming a first end face 16 and a second end face 17 which are symmetrical about the axis 18 of the comb body 1. Viewed from the longitudinal direction, The first end surface 16 is located upstream of the second end surface 17 , wherein the axial direction of the comb needle 15 is the axial direction of the incomplete cylinder constituting the needle body 5 , and the longitudinal direction is a direction perpendicular to the first end surface 16 . The comb support part 2 is fixed on the first end surface 16 of the comb main body part 1, and the geometry shape of the comb support part 2 in a plane perpendicular to the first end surface 16 and parallel to the axis 18 is a right triangle, and is parallel to the first end surface 16. One end face 16 is stretched to a certain length in a direction perpendicular to the axis 18 to form the width of the comb support part 2 . In this embodiment, the first end face 16 and the second end face 17 have the same width as the comb support part 2 and the comb tooth part 3, which is 1.5mm. The angle γ is 10°. The comb tooth portion 3 is formed by connecting 14 teeth through the tooth base 6 , including 7 large teeth 20 and 7 small teeth 21 . Between the large tooth surface 14 and the adjacent small tooth back 24, and between the small tooth surface 25 and the adjacent large tooth back 13 are arc-shaped, and the shortest distance from the arc-shaped to the second end surface 17 is The tooth base 6, in this embodiment, the radius of the tooth base 6 is 0.5 mm. The comb tooth part 3 is fixed on the second end surface 17 of the comb needle main body part 1, and the teeth on the comb tooth part 3 are separated by a large tooth 20 and a small tooth 21 along the axial direction of the comb needle 15 at a pitch b1 and b2 Formed, the large tooth surface 14 of the large tooth 20 and the small tooth back 24 of the small tooth 21 are fused in the tooth base 6, the small tooth surface 25 of the small tooth 21 and the large tooth back 13 of the large tooth 20 are fused in the tooth base 6, The part where the large tooth surface 14 and the large tooth back 13 of the large tooth 20 are fused is cut to form the tooth top 12, wherein the cutting angle, namely the tooth top cutting angle β, is 15°, and the tooth top 12 and the large tooth surface 14 form the large tooth 20 The tooth tip 8 of the tooth, the small tooth surface 25 and the small tooth back 24 of the small tooth 21 form the tooth tip 9. The tooth pitches b1 and b2 are the distances in the axial direction between the tooth tip 8 of the large tooth 20 and the tooth tip 9 of the adjacent small tooth 21 , in this embodiment, b1 is 3.6 mm, and b2 is 4.5 mm. The tooth depth b3 of the large tooth 20 is the maximum distance from the tooth tip 8 to the tooth base 6 of the large tooth 20 in the longitudinal direction of the comb needle 15, and in this embodiment, b3 is 4mm. The tooth depth b4 of the small tooth 21 is the maximum distance from the tooth tip 9 of the small tooth to the tooth base 6 in the longitudinal direction of the comb needle 15, and in this embodiment, b4 is 2.6 mm. The large teeth 20 of the comb needles 15 each have a tooth tip 12 . The large tooth back 13 and the large tooth surface 14 of the large tooth 20, the small tooth back 24 and the small tooth surface 25 of the small tooth 21 are all straight. The included angle α between the large tooth back 13 of the large tooth 20 and the axial direction of the comb needle 15 is the tooth back angle of the large tooth 20, and the included angle α1 between the small tooth back 24 of the small tooth 21 and the axial direction of the comb needle 15 is The back angles of the small teeth 21, in this embodiment, both α and α1 are 45°. The angle a2 between the large tooth surface 14 of the large tooth 20 and the axial direction of the comb needle 15 is the working angle of the large tooth 20, and in this embodiment, a2 is 100°. The angle a3 between the small tooth surface 25 of the small tooth 21 and the axial direction of the comb needle 15 is the working angle of the small tooth 21, and in this embodiment, a3 is 110°. The included angle a4 formed by the large tooth surface 14 and the large tooth back 13 of the large tooth 20 is the addendum angle, and in this embodiment, a4 is 55°. The included angle a5 formed by the small tooth surface 25 and the small tooth back 24 of the small tooth 21 is the tip angle, and in this embodiment, a5 is 65°.

As shown in Figure 4, the comb needle 15 in the present embodiment is installed on the needle plate 27 of carding mechanism 26 and the jute fiber bundle 19 is combed, and the jute fiber bundle is fully and meticulously combed so that the impurities therein are efficiently excluded.

Example 2

As shown in Figures 5-6, it is a kind of composite comb needle provided by this embodiment. The difference between this embodiment and Embodiment 1 is: The cut angle, ie the addendum cut angle β, is 0°.

Claims (10)

1. a compound type comb needle for combing hemp fiber bundles, comprising a needle body part (1), a needle support part (2) and a comb tooth part (3), said needle body part (1) comprising The needle body (5) and the needle point (4) located at the head of the needle body (5) are characterized in that a first end surface (16) and a second end surface (17) are respectively provided on both sides of the needle body (5). ), the first end surface (16) is provided with a comb support portion (2), and the second end surface (17) is provided with a comb tooth portion (3); The shape of the comb support part (2) is a right triangle, one right angle side of the right angle triangle is equal to the length of the first end surface (16) and the two are completely fitted, and the other right angle side is perpendicular to the first end surface (16) ) and on the same plane as the end face of the tail of the needle body (5); The comb tooth portion (3) includes a tooth base (6) arranged axially along the needle body (5), and large teeth (20) and small teeth (21) arranged at intervals on the tooth base (6), the large teeth (20) The side close to the needle tip (4) is the large tooth back (13), the other side is the large tooth surface (14), and the side of the small tooth (21) close to the needle tip (4) is the small tooth back (24) , the other side is the small tooth surface (25), the large tooth surface (14) and the small tooth back (24), the small tooth surface (25) and the large tooth back (13) are fused in the tooth base (6); the large tooth The back (13) and the large tooth surface (14) respectively extend to form a large tooth tip (8), the large tooth back (13) is provided with a tooth top (12) near the large tooth tip (8), and the small tooth back (24) and The small tooth surfaces (25) respectively extend to form small tooth tips (9). 2. compound type comb needle as claimed in claim 1, is characterized in that, described needle point (4) is the quasi-conical shape that both sides of tail are plane, and the plane of these two sides is respectively the first end surface (16), the second end surface. The extension of the two end surfaces (17) on the corresponding planes; the needle body (5) is a cylindrical shape with two sides being planes, and the planes on both sides are the first end surface (16) and the second end surface (17) The needle point (4) and the needle body (5) are coaxially arranged; the thickness of the comb support part (2) is fully fitted with the width of the first end surface (16); the comb tooth part (3 ) is fully fitted with the width of the second end face (17). 3. The composite comb needle according to claim 1, characterized in that, the length of the main body part (1) of the comb needle is 68-80 mm; the length of the needle point (4) is 10-18 mm, and the length of the needle point (4) The cone angle is 12°-23°; the length of the needle body (5) is 50-70mm, and the diameter of the needle body (5) is 3-6mm. 4. The composite comb needle according to claim 1, characterized in that, the apex angle of the needle support part (2) close to the needle point (4) is 10°-15°; the first end surface (16) , the second end face (17), the length of the comb support portion (2) are equal, are 52～72mm; the width of the first end face (16), the second end face (17), the comb support portion (2) Equal, are 1 ~ 2mm. 5. The composite comb needle according to claim 1, characterized in that, the tooth pitch of the comb tooth portion (3) is 1.5 to 5.5 mm; the large tooth surface (14) and the adjacent small tooth back ( 24), the small tooth surface (25) and the adjacent large tooth back (13) are arc-shaped, and the shortest distance from the arc-shaped to the second end surface (17) is the tooth base (6) , the arc-shaped radius is not less than one-seventh of the tooth pitch of the comb tooth portion (3). 6. composite comb needle as claimed in claim 1, is characterized in that, the included angle formed by the axis (18) of described large tooth back (13) or small tooth back (24) and needle body (5) is Tooth back angle, the angle is 30°～65°; the angle formed by the large tooth surface (14) or the small tooth surface (25) and the axis (18) is the working angle, and the angle is 90°～130° ; The angle formed by the large tooth surface (14) and the large tooth back (13) is the addendum angle, and its angle is 30°～65°; the small tooth surface (25) and the small tooth back (24) The formed included angle is tooth tip angle, and its angle is 30°～70°; the included angle formed by the tooth top (12) and axis (18) is tooth top cutting angle, and its angle is 0°～15° . 7. The composite comb needle according to claim 1, characterized in that the tooth depth of the large tooth (20), that is, the vertical distance from the large tooth tip (8) to the tooth base (6) is 3.5- 5.5 mm; the tooth depth of the small tooth (21), that is, the vertical distance from the small tooth tip (9) to the tooth base (6), is 1.5-3.5 mm. 8. The composite comb needle according to claim 1, characterized in that the tooth thickness of the large teeth (20) or the small teeth (21) is 0.25-1.5 mm. 9. The composite comb needle according to claim 1, characterized in that, the numbers of the large teeth (20) and the small teeth (21) are equal, and the comb teeth (3) are closest to the needle point (4). ) of the first tooth is a large tooth (20). 10. The composite comb needle according to claim 9, characterized in that, the number of the large teeth (20) and the small teeth (21) is seven.

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