CN2739200Y - Doffer metal card clothing special for polynoise fiber - Google Patents

Abstract

The utility model belongs to the field of the textile special member, relates to a doffer metal card clothing special for the polynoise fiber, and is suitable for the medium speed carding machine. The card clothing is characterized in that: the card clothing adopts the configuration of a small angle lower front angle and a small angle tooth back angle, which is favorable to the grabbing, the carding and the timely transferring on the polynosic fiber. The card clothing guarantees the sharp web of the polynosic fiber, has no fiber winding phenomenon, and causes the quality of the yarn products to achieve the superior level.

Description

Doffer wires for polynosic fibers

technical field

The utility model belongs to the field of special textile parts, in particular to a special doffer metal card clothing for polynosic fibers suitable for medium-speed carding machines.

Background technique

Polynosic fiber is an improved regenerated cellulose fiber with high degree of polymerization, high strength and high wet modulus. It inherits the advantages of ordinary viscose fiber (such as soft hand, good drapability, color and luster) Bright and hygienic requirements), at the same time, the wet modulus is increased to 2.5 to 3.5 times that of ordinary viscose fiber, and the performance is closer to natural cotton. It is a new skin-friendly green fiber. The most unique and valuable feature of polynosic fiber is that it has excellent alkali resistance and can be blended with cotton for mercerizing finishing, giving the fabric a silky luster.

The Chinese patent was published on May 28, 2003, and the publication number was CN1420216A, and the invention patent of the special doffer metal card clothing for soybean protein fiber was announced as shown in Figure 1. _{The needle teeth 1' arranged on the base 2' are characterized in that the lower rake angle α 1 ' of the needle teeth 1' is 30 degrees, the rake angle α 2 '} is 45 degrees, and the back angle β' is 45 degrees , the pitch P' of the pin teeth is 1.97-2.03 mm, the thickness a' of the pin teeth is 0.12-0.17 mm, the thickness b' of the dedendum is 0.3 mm, the height h' of the pin teeth is 2.75-2.85 mm, and the total height H of the pin teeth ' is 4.48-4.52 mm, the density of the pin teeth is 571 teeth/square inch, the base thickness W' of the base 2' is 0.82-0.92 mm, and the base height c' is 1.3 mm.

Compared with soybean protein fiber, polynosic fiber has obvious differences in surface state and physical properties. Better; while soybean protein fiber is soft and has low flexural rigidity, fluffy light specific gravity, less curl and poor resilience. If the special metal card clothing for soybean protein fiber is directly used to process polynosic fiber, insufficient carding will occur, the degree of fiber transfer will not be high, it will not be conducive to medium-speed production, the output quality will be relatively low, and the fiber will have winding and other technologies. question.

Contents of the invention

Aiming at the above-mentioned defects, the utility model designs a new special doffer wire for polynosic fibers to fully solve the problems of carding, transfer and prevention of fiber entanglement of polynosic fibers.

The technical scheme that the utility model solves technical problem is as follows:

A doffer metal card clothing for polynosic fibers, comprising a base 2 with a base thickness W and a base height c, which is uniformly distributed on the base 2 and configured with a small-angle lower rake angle and a small-angle tooth back angle, and has a needle tooth lower angle Rake angle α ₁ , rake angle α ₂ , back angle β, pin tooth pitch P, pin tooth thickness a, tooth root thickness b, tooth tip height h, total pin tooth height H, pin tooth density 1, It is characterized in that the base height c is 1.0 mm, the pin tooth lower rake angle α ₁ is 1.5 degrees, the tooth back angle β is 35 degrees, the pin tooth pitch P is 2.05-2.15 mm, and the tooth tip height h is 2.46-2.56 mm, the total height H of the pin teeth is 3.88-3.94 mm, and the density of the pin teeth is 496 teeth/square inch.

Compared with the prior art, the utility model has the following advantages:

Because the needle teeth of the utility model adopt the improved design such as small-angle lower rake angle and small-angle tooth back angle, it is very beneficial to the grasping, carding and transfer of polynosic fibers by the card clothing, and ensures that the cotton web is clear and free of fibers Winding phenomenon, so that the spinning quality can reach an excellent level.

Description of drawings

Figure 1 is a schematic diagram of the structure of the existing doffer metal wire for soybean protein

Figure 1 (A') is the front view of the existing doffer wire for soybean protein fiber

Fig. 1 (B') is a cross-sectional view of the existing doffer wire for soybean protein fiber

In Fig. 1(A') and Fig. 1(B'), 1'-needle, α _1' -lower rake angle, α _2' -rake angle, β'-tooth back angle, P'-needle tooth pitch, a'-tooth thickness, b'-tooth thickness, h'-tooth height, H'-tooth height, 2'-base, W'-base thickness, C'-base height;

Fig. 2 is the structural schematic diagram of the special doffer metal card clothing for the polynosic fiber of the present invention

Fig. 2 (A) is the front view of the special doffer metal card clothing for the polynosic fiber of the present invention

Fig. 2 (B) is a sectional view of the special doffer metal card clothing for the polynosic fiber of the present invention

In Fig. 2(A) and Fig. 2(B), 1-pin tooth, α ₁ -lower rake angle, α ₂ -rake angle, β-tooth back angle, p-pin tooth pitch, a-pin tooth thickness , b-root thickness, h-pin height, H-total height, 2-base, W-base thickness, C-base height.

Detailed ways

As shown in Figure 2, a special doffer metal card clothing for polynosic fibers, the card clothing includes a base 2 and needle teeth 1 evenly distributed on the base 2, the base thickness W of the base 2 is the same as W', and is 0.82~ 0.92 mm, the base height C is changed to 1.0 mm, the pin teeth adopt the configuration of small-angle lower rake angle and small-angle tooth back angle, the lower rake angle α ₁ of the pin teeth is changed to 15 degrees, and the rake angle α ₂ and α ₂ ' The same is 45 degrees, the back angle β is changed to 35 degrees, the pitch P of the pin teeth is changed to 2.05-2.15 mm, the thickness of the pin teeth a and a' are the same as 0.12-0.17 mm, and the thickness of the tooth root b and b' are the same as 0.3 mm, the pin height h is changed to 2.46-2.56 mm, the total pin-tooth height H is changed to 3.88-3.94 mm, and the pin-tooth density is changed to 496 teeth/square inch.

Because the utility model adopts the improved designs such as the small-angle lower rake angle α ₁ and the small-angle tooth back angle β, the card clothing is very beneficial to the corrugation when the supporting cylinder runs at a medium speed (300-360 rpm). The grasping, carding and timely transfer of polynosic fibers can ensure that the polynosic fiber cotton web is clear and free from fiber entanglement, so that the spinning quality can reach an excellent level.

Claims (1)

1. the special-purpose doffer's metallic card clothing of a polynoise fiber, comprise have base portion thickness (W), the base portion (2) of base portion height (c) and be distributed on and adopt anterior angle and the configuration of low-angle Clearance angle under the low-angle above the base portion (2), have anterior angle (α under the pin tooth ₁), anterior angle (α ₂), the pin tooth (1) of Clearance angle (β), pin tooth tooth pitch (P), pin transverse tooth thickness degree (a), thickness at root of tooth (b), crown height (h), pin tooth height overall (H), pin tooth density, it is characterized in that described base portion height (c) is anterior angle (α under 1.0 millimeters, described pin tooth ₁) be that 15 degree, Clearance angle (β) they are that 35 degree, pin tooth tooth pitch (P) they are that 2.05～2.15 millimeters, crown height (h) are that 2.46～2.56 millimeters, pin tooth height overall (H) are that 3.88～3.94 millimeters, the density of pin tooth are 496 tooth/square inches.

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