TW202031951A - Metallic card for carding machine - Google Patents

Abstract

A metallic card (801) for use in carding machines has been disclosed. The card comprises a base (802) and a blade (803) formed on the base, the blade comprising teeth (804), characterized in that the teeth (804) comprises a tooth pitch p, a first rising edge (8041) having a defined contour, transitions from a tooth root base (8042) to form a first tip (8043) of a first tooth, the first tip of the first tooth comprising a tooth height Dl from the tooth root base (8042), a working angle substantially between 0 DEG to 50 DEG formed by the first rising edge (8041) of the first tooth tip (8043), an angle substantially between 50 DEG to 90 DEG formed by a trailing edge (8044) of the first tooth; a second rising edge (8045) having a defined contour substantially transitions from a point (8046) at the tooth root base (8042) or a point (8046') at the trailing edge (8044) of the first tooth tip to form a second tooth, the second tooth comprising a height D3 from the point (8046) at the tooth root base (8042) or from the point (8046') at the trailing edge (8044) of the first tooth tip to a tip (8047) of the second tooth, a height D2 from the tip (8047) of the second tooth to the tooth root base (802), and a trailing edge (8048) from the tip (8047) of the second tooth being contoured to substantially transition into a rising edge(8041'') of a subsequent first tooth tip (8043'').

Description

Metal needles for carding machines

The present invention generally relates to metal card clothing, and more specifically, it relates to an improved metal card clothing that includes a divider such as a protrusion in the root of the tooth to prevent fiber from flowing to the root, thereby preventing damage to the tooth and increasing the life of the tooth .

Metal card clothing is the carding element in the carding machine and is used in all textile mills to clean, individualize and parallelize fibers. In the carding machine, card clothing in the form of continuous zigzag hatching is wound on the cylinder roller of the carding machine. The card clothing generally includes a base part and a blade part with teeth.

The conventional carding thread has clear grooves between the teeth to facilitate the fiber to enter and flow through the grooves to the tips of the upcoming teeth, as shown in Figures 1 and 2. In this type of design, the fiber flow will go to the front edge of the teeth and be combed for fiber separation.

Increase the service life of card clothing teeth by heat-treating the teeth. Unfortunately, this type of geometry of the teeth does not allow the teeth to be as hardened at the base as at the tip and therefore make the root softer. In this way, it promotes the installation of card clothing, but at the same time, it cannot meet the heavy abrasion of fibers in high-yield needles and cannot withstand high-stretch fibers, resulting in high wear and damage to the roots and inefficient carding and poor life. For better observation, conventional tooth profile images are shown in Figures 3 and 4. Figures 5 and 6 show damage in the root, where the hardness may not be achieved.

Any number of attempts to uniformly harden the tip to the root becomes tedious and produces high hardness in the root, which is undesirable for thread installation in application. The soft tooth base cannot withstand the abrasion of cotton and synthetic fibers. As a result, root damage causes turbulence and disturbs the fiber flow, which reduces the quality life and requires a new card clothing kit as a replacement prematurely.

Therefore, there is a need for card clothing geometry and design that will prevent the flow of fibers to the soft root, thereby preventing tooth damage and increasing the life of the tooth.

Reference may be made to patent application 1501/DELNP/2014, which discloses a metal needle thread comprising elongated rib portions and teeth, in which one or more bumps (which may be flattened bumps) are present on the back section of the teeth. The presence of ridges or flattening ridges and their dimensions (especially not deep grooves) create an extra surface at the tip of the needle thread, and the fiber can stay on the extra surface by friction and geometric barriers, so that the fiber does not penetrate too deeply into the thread in. Better carding is the result, because the fibers are easier to get from the top and doffer.

Reference may be made to patent application IN201644010010, which discloses a toothed metal needle wiring with a first tip, a second tip and an elevation angle at the back surface of the tooth.

In addition, reference may also be made to the patent application IN201744040340A, which discloses a needle wiring including a blade portion with a first tip and a second tip at the back surface of the tooth.

Further reference may be made to the patent application WO2015154837A1, which discloses a needle thread design in which the teeth of the zigzag thread have a tooth profile that allows the tooth tip to be abraded as frequently as possible. For this purpose, the tooth tip is formed on the tooth tip portion which slightly decreases with each grinding operation and therefore the tooth tip progresses with downward simultaneous sharpening. For example, the serration line can be reground several times until the tooth tip is completely ground on the tooth tip part, and the tooth tip is formed by direct conversion from the tooth tip part in the tooth surface before the end of the use of the serration line .

The prior art documents have so far revealed the formation of ridges, tooth tips, elevation angles and second teeth at the back surface of the teeth. These can lead to a small prevention of the inflow of fibers into the root of the tooth but are not more effective than the present invention.

The following content presents a simplified summary of the invention to provide a basic understanding of some aspects of the invention, neither identifying key elements nor delimiting the scope of the invention. Its sole purpose is to present a certain concept of the invention in a simplified form as a prelude to the more detailed description that is presented later.

An object of the present invention is to prevent fibers from flowing into the tooth roots of the metal card clothing to protect the teeth and substantially increase the life of the teeth.

Therefore, one aspect of the present invention relates to a metal card clothing including a separator such as a protrusion in the tooth root, which protects the root by preventing fibers from flowing into the tooth root.

From the embodiments performed in conjunction with the accompanying drawings, other aspects, advantages, and prominent features of the present invention will become apparent to those with ordinary knowledge in this technical field, and the embodiments disclose exemplary embodiments of the present invention.

The following description with reference to the accompanying drawings is provided to assist a comprehensive understanding of the exemplary embodiments of the present invention. The following description includes various specific details to assist his understanding, but these details are regarded as only illustrative.

Therefore, those with ordinary knowledge in this technical field will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of the present invention. In addition, for the sake of clarity and conciseness, descriptions of well-known structures and methods are omitted.

The terms and words used in the following description and the scope of the patent application are not limited to the written meaning, but are only used by the inventor to achieve a clear and consistent understanding of the present invention. Therefore, it should be obvious to those with ordinary knowledge in this technical field that the following description of various embodiments of the present invention is for illustrative purposes only and not for limiting the scope of the present invention as defined by the scope of the appended patent application and its equivalents. For purpose.

The features described and/or illustrated with respect to one embodiment can be used in one or more other embodiments in the same manner or in a similar manner and/or in combination with or instead of features of other embodiments.

It should be emphasized that the term "comprises/comprising" (if used in this specification) is used to specify the existence of the stated feature, integer, step or component but does not exclude one or more other features, integers, steps, components or their The existence or addition of groups.

The present invention discloses a metal card clothing comprising a divider such as a protrusion at the tooth root, which divider prevents fibers from flowing into the tooth root as shown in FIG. 7 without limitation. This design ultimately prevents tooth wear and damage and therefore increases the quality life of the card clothing.

The divider protects the tooth root from excessive abrasion by breaking and guiding the gap between the fiber bundles, seed coats and inferior products and further protecting the teeth. It also acts as a separator for fiber bundles, seed coats and inferior products. Inferior products that are separated or broken easily flow into the gaps between the lines and therefore the embedding problem is minimized.

The design of the divider requires various shapes and sizes to meet the size and application of the spacing. The different shapes of the dividers according to different embodiments of the present invention are shown in FIGS. 8 and 9. The experiments carried out on the present invention have given better initial performance and the intended longer quality life. The present document may indicate a specific shape and size or several shapes and sizes of the divider for the purpose of explaining and describing different embodiments, and it limits the scope of the present invention in any way.

Reference has been made to Figure 10, where the divider design follows the conventional standard equal spacing configuration and the varying spacing configuration as disclosed as an added feature in the previously granted Indian Patent 75/MAS/2000.

The heights D2 and D3 of the dividers in Figs. 8 and 9 vary from 25% of the size D1 to 75%.

According to an embodiment of the present invention, FIGS. 8 and 9 illustrate the disclosed metal needle (801) for a carding machine. The needle includes a base (802) and a blade (803) formed on the base. The blade includes teeth (804), characterized in that the teeth (804) include: a tooth pitch p; A first rising edge (8041) of the contour, which transforms from a root base (8042) to form a first tip (8043) of a first tooth, the first tip of the first tooth includes a distance from the root base A tooth height D1 of the seat (8042), a working angle formed by the first rising edge (8041) of the first tooth tip (8043), which is substantially between 0° and 50°, by the first tooth A rear edge (8044) of a tooth forms an angle substantially between 50° and 90°; a second rising edge (8045) having a point (8046) free from the root base (8042) Or at a point (8046') at the rear edge (8044) of the tip of the first tooth substantially transforms to form a defined profile of a second tooth, the second tooth including the root base (8042) The point (8046) or a height D3 from the point (8046') at the rear edge (8044) of the tip of the first tooth to a tip (8047) of the second tooth, from the point of the second tooth A height D2 from the tip (8047) to the root base (802), and is contoured to substantially transition from the tip (8047) of the second tooth to the rising edge (8043") of the subsequent first tooth tip (8043") A rear edge (8048) in 8041").

According to another embodiment of the present invention, the teeth of the metal needle have equal or different pitch lengths. In addition, in another embodiment, the first tip of the first tooth is transformed into a substantially flat inclined edge to form a second tip (9043'), and the second tip (9043') is further transformed to the rear edge of the first tooth (9044).

In an embodiment of the present invention, the size of the height D2 and the height D3 of the second tooth of the metal needle varies substantially between 25% and 75% of the size of the height D1 of the first tip of the first tooth. In some embodiments, the heights D2 and D3 of the second teeth are equal in size.

In an embodiment of the present invention, the substantially flat inclined edge that transitions from the first tip of the first tooth to the second tip has an angle of about 2 degrees, and the transition from the first tip of the first tooth to the second tip The substantially flat inclined edge has a length substantially between 0.3 and 0.7 mm.

In an embodiment of the present invention, the substantially arcuate edge formed by the transition from the rear edge of the first tooth to the second rising edge of the second tooth and the rising edge of the second tooth, the tip of the second tooth and The substantially arcuate edge formed by the rear edge of the second tooth and the arcuate edge formed by the transition from the rear edge of the second tooth to the first rising edge of the subsequent first tooth have different radius sizes.

According to another embodiment of the present invention, the metal needle is a licker wire, a cylindrical wire and the like.

Similar dividers can also be applied to the licker-in line application as shown in Figure 11. The properties of high load, high abrasion and wear are more obvious in the application of the licker roller.

Refer to Figure 11, Figure 12 and Figure 13, the second tooth tip (11047; 12047; 13047) of the metal needle/licker line is at the three first tooth tips (11043, 11043", 1104; 12043, 12043", 1204; 13043, 13043", 1304) alternately or at once.

The existence of dividers (second teeth) before each tooth (first tooth) or at intervals of 2, 3, 4, and 5 tooth pitches is also possible as shown in Figs. 12 and 13. The divider and the tooth flanks are separated by a minimum 0.05 mm gap on either side to facilitate the heat treatment process to harden the tooth root to the extent possible. In addition, the separator is partially hardened to withstand some wear.

According to the experimental tests conducted with the exemplary embodiment of the metal card clothing as described above, the following table shows the improvement produced compared to the conventional profile mounting needle. S.No detail LC 300A-V3- pin 1 LC 300A-V3- pin NO.2 Test date 17/09/2018 17/09/2018 1 Thread details Cylinder P2035EX0.45- EVOLV-2X P2035HX0.4- EVOLV-2X- Divider section Doffing machine M4030EX 0.8- EVO LV- 2X N4030X0.85R Flat top EVOLV-2X-550 EVOLV-2X-550 SFL 140(2)240(3) 320(3) 140(2)240(3) 320(3) SFD 640(5) 640(5) 2 Processing details Production rate (Kgs/Hr) 28 Kgs/Hr 28 Kgs/Hr Yarn count 30s K 30s K 3 Line life details (in tons) Cylinder 35 TONS 20 TONS Doffing machine 35 TONS 380 TONS smooth 35 TONS 380 TONS 4 AFIS results Neps/Gm- feed 313 335 Neps/Gm- cotton strip 116 134 NRE% 63% 60% Mian in the seed coat nep 12 5 5 Yarn results U% 11.99 11.88 -50% thinner 5.0 4.5 Thickness +50% 268.5 212.5 Neps +200% 214.5 166.5 total 488 383.5 Table I- Test 1

When comparing seed neps in cotton slivers, it was noticed that the divider tooth profile mounting needle was significantly reduced compared to the conventional profile mounting needle. In the yarn defect level, a 21% quality improvement was found in the divider tooth profile line installation needle. Needle number 1 2 Line model LCC LCC Needle model LC300A-V3 LC300A-V3 Cylinder line profile conventional Divider Cylinder wire specification P 2035EX0.4-Evolv-2X P 2035HX0.4-Evolv-2X Specification for doffer thread M4030EX0.8-Evolv-2X M4030EX0.8-Evolv-2X Flat top specification Evolv-2x-550 Evolv-2x-550 Test date 06/07/2018 06/07/2018 tonnage 82 twenty two count 24sK 24sK Yarn U% 12.03 12.03 -50% thinner 4 4 Thickness +50% 276 264 Neps +200% 264 226 Total defects (normal sensitivity) 544 494 -40% thinner 182 164 Thick +35% 1306 1238 Neps +140% 1274 1122 Total defects (higher sensitivity) 2762 2524 CSP 2425 2443 Table II- Test 2

When testing in the same way, a 10% improvement was noted in the divider tooth profile. LCC- divider tooth profile test Model of needle LC 361Z LC 300 V4 LC 361Z LC 300 V4 LC 361Z LC 300 AV4 Type of cotton MCU-5 MCU-5 count 60sK 40 sK Line profile LCC divider teeth C20-40-95U LCC divider teeth C20-40-95U LCC divider teeth C20-40-95U Model and specification of flat top BCS TV-55 BCS TV -55 LCC EVO- 55 reverse BCS TV -55 TV55 (from PCT) BCS TV-55 CBG section LCC LMW Number of delivery bundles 0.1 0.1 0.1 0.1 0.1 0.1 Delivery speed (m/min) 114 100 113 100 140 129 Output Kg/hr 40 35 40 35 49.6 45.7 AFIS- Needle Cotton Strip SFC(n) 23.1 twenty three 21.6 22.5 26.1 29.3 Neps/gm 88 94 79 124 70 66 SCN 5 11 10 18 8 11 AFIS- buffer cotton strip SFC(n) 22.6 22.2 twenty one 21.9 23.3 25.4 Neps/gm 87 101 66 103 76 56 SCN 7 13 10 11 11 14 AFIS- processing machine cotton strip SFC(n) 23.7 19.8 20.5 21.4 21.5 27.4 Neps/gm 69 121 82 130 92 68 SCN 7 7 16 13 14 12 Yarn results U% 14.96 15.51 14.63 15.3 13.91 14.13 Thin position -50%/km 156.6 206 107.5 145.4 53.3 67.6 Thick position +50% / km 946.2 1080 859.3 1126 630.4 678.5 Nep +200% / km 1690 1884 1562 2046 1083 1135 Total defects / km 2793 3170 2529 3317 1767 1881 Thin position -40%/km 1305 1568 1081 1376 787.5 870 Thick position +35% / km 2705 2918 2478 3000 2154 1761 Neps +140% / km 5322 5752 4978 6052 4124 4274 Total height , sens / km 9332 10238 8537 10428 7065.5 6905 CMT offline Cops total failure 13,897 16265 12123 15392 5253 6049 CMT 3 conversion total error 4082 5424 3585 4570 1436 1894 N 7.6 9.7 8.2 8 3 5 S 20.1 34.8 22.5 12.4 twenty two 43 L 5.3 14.2 11.4 13.1 2 4 T 0.8 2.6 1.1 0.4 0 1 Total incision 33.8 61.3 43.2 33.9 60 118 IPI Diff% 14 31 6 Cmt3 Diff% 33 27 32 Cut Diff% 81 -twenty two 95 MCU-5 MCU-5 60sK 40s K Table III- Trial 3

Some non-limiting advantages of the present invention are: 1. Prevent tooth damage and wear 2. Improve the life quality of metal card clothing.

Although the metal card clothing has been described in language specific to structural characteristics, it should be understood that the embodiments disclosed in the above sections are not necessarily limited to the specific methods or devices described herein. In fact, the specific features are disclosed as an implementation example of metal card clothing.

no

With regard to the following description and drawings, the above and other features, aspects and advantages of the subject matter will be better understood. [Figure 1 to Figure 2] Description of the conventional metal card clothing. [Figure 3 to Figure 4] Illustrate the conventional tooth profile of the conventional metal card clothing. [Figures 5 to 6] illustrate the damage in the root, where the hardness may not be achieved. [Figure 7] Illustrates a metal card clothing according to an embodiment of the present invention. [Fig. 8] Illustrates the design of the separator of the metal card clothing according to the embodiment of the present invention. [Figure 9] Illustrates the design of a separator for metal card clothing according to an embodiment of the present invention. [Figure 10] Explain the design of the divider in the equal spacing configuration and the variable spacing configuration. [Figure 11] Illustrates a licker line with a divider according to an embodiment of the present invention. [Figure 12 to Figure 13] Illustrate the divider before each tooth and a random position with a different shape in the standard tooth pattern (Figure 12) and the changed tooth pattern (Figure 13) of the metal wire according to the embodiment of the present invention The presence. Those with ordinary knowledge in this technical field should understand that the elements in the figures are illustrated for simplicity and clarity and may not be drawn to scale. For example, relative to other elements, the size of some elements in the figure can be enlarged to help improve the understanding of various embodiments of the present invention. Throughout the drawings, it should be noted that the same reference numbers are used to depict the same or similar elements, features and structures

801: Metal needle

802: Pedestal

803: blade

804: tooth

8041: first rising edge

8041": rising edge

8042: tooth root base

8043: the first tip

8043": The tip of the subsequent first tooth

8044: back edge

8045: second rising edge

8046: point

8046': point

8047: tip

8048: back edge

D1: Tooth height

D2, D3: the height of the second tooth

Claims (10)

A metal needle (801) used in a carding machine, which contains: A base (802) and a blade (803) formed on the base, the blade includes teeth (804), characterized in that the teeth (804) include a pitch p; A first rising edge (8041) with a defined profile, which transforms from a root base (8042) to form a first tip (8043) of a first tooth, the first tip of the first tooth includes A tooth height D1 from the tooth root base (8042), A working angle formed by the first rising edge (8041) of the first tooth tip (8043) is substantially between 0° and 50°, An angle formed by a rear edge (8044) of the first tooth is substantially between 50° and 90°; A second rising edge (8045), which has substantially transformed from a point (8046) at the root base (8042) or a point (8046') at the rear edge (8044) of the first tooth tip to form A defined contour of a second tooth, the second tooth including From the point (8046) at the root base (8042) or from the point (8046') at the rear edge (8044) of the first tooth tip to a point (8047) of the second tooth Height D3, A height D2 from the tip (8047) of the second tooth to the root base (802), and A rear edge (8048) that is contoured to substantially transition from the tip (8047) of the second tooth into a rising edge (8041") of a subsequent first tooth tip (8043"). Such as the metal needle of claim 1, wherein the teeth have equal or different pitch lengths. Such as the metal needle of claim 1 or claim 2, wherein the first tip of the first tooth is transformed into a substantially flat inclined edge to form a second tip (9043'), the second tip (9043') It further transforms into the rear edge (9044) of the first tooth. The metal needle of any one of claims 1 to 3, wherein the size of the height D2 and the height D3 of the second tooth is substantially 25% of the size of the height D1 of the first tip of the first tooth To 75%. Such as the metal needle of claim 1 or claim 4, wherein the dimensions of the height D2 and D3 of the second tooth are equal. The metal needle of claim 3, wherein the substantially flat inclined edge transitioning from the first tip of the first tooth to the second tip has an angle of about 2 degrees. The metal needle of claim 3, wherein the substantially flat inclined edge that transitions from the first tip of the first tooth to the second tip has a length substantially between 0.3 and 0.7 mm. The metal needle of any one of claims 1 to 7, wherein the substantially arcuate edge formed by the rear edge of the first tooth transitioning to the second rising edge of the second tooth and by the first tooth The substantially arcuate edge formed by the rising edge of the two teeth, the tip of the second tooth, and the rear edge of the second tooth, and the transition from the rear edge of the second tooth to the first tooth of the subsequent first tooth The arcuate edges formed in a rising edge have different radius sizes. Such as the metal needle of any one of claims 1 to 8, wherein the needle is a licker wire, a cylindrical wire or the like. The metal card clothing of any one of the preceding claims, wherein the second tooth tips (11047; 12047; 13047) are at the three first tooth tips (11043, 11043", 1104; 12043, 12043", 1204; 13043, 13043 ", 1304) alternately or at once.

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