Drafting mechanism for four-roller thin-leather drum-shaped leather roller spinning, thin-leather drum-shaped leather roller assembly, double-end thin-leather drum-shaped leather roller assembly and upper leather collar pin

Abstract

The utility model provides a drafting mechanism for four-roller thin-leather drum-shaped leather roller spinning, which comprises a thin-leather drum-shaped leather roller assembly, a double-end thin-leather drum-shaped leather roller assembly and an upper leather collar pin, and the drafting mechanism for the four-roller thin-leather drum-shaped leather roller spinning comprises at least one path of drafting area, the drafting area comprises a front drafting area and a rear drafting area. According to the utility model, four groups of roller structures are adopted, so that a micro-drafting area is formed in the central area of the drafting mechanism, fibers can be straightened more easily, and if long fibers need to be spun, slipstream drafting can be carried out only by exchanging the first middle thin-leather drum-shaped leather roller assembly and the second middle thin-leather drum-shaped leather roller assembly left and right; and the quality of yarns spun by the drafting of the thin drum-shaped leather roller assembly is better than that of yarns spun by the traditional slotting slip flow drafting.

Description

Technical Field

[0001] This utility model relates to the field of spinning technology, specifically to a drafting mechanism for four-roller thin-skin drum-shaped roller spinning, a thin-skin drum-shaped roller assembly, a double-headed thin-skin drum-shaped roller assembly, and an upper leather ring pin. Background Technology

[0002] The spinning process involves the following three steps:

[0003] 1. Drafting: The process of drawing the roving evenly to the required linear density of the yarn.

[0004] 2. Twisting: Adding appropriate twist to the drafted sliver to give the yarn certain physical and mechanical properties such as strength, elasticity, luster, and hand feel;

[0005] 3. Winding Formation: The spun yarn is wound onto a bobbin according to certain forming requirements, which facilitates transportation, storage and subsequent processing.

[0006] Therefore, drafting is usually the first step in spinning. Its main function is to further lengthen and evenly distribute the fiber sliver, providing uniform and stable fiber feeding conditions for subsequent forming and twisting processes. The drafting process is directly related to the quality of the yarn, such as yarn evenness, fiber straightness, and yarn strength.

[0007] Currently, the traditional three-roller drafting mechanism is widely used in the spinning process. Its structure is relatively simple and suitable for ordinary short fiber spinning. However, when facing spinning scenarios with longer fiber lengths or higher requirements for yarn quality, the three-roller drafting mechanism has certain shortcomings, mainly manifested in the following ways:

[0008] 1. Limited draw ratio: Due to the limited number of rollers, the speed control range during processing is short, making it difficult to achieve a higher draw ratio.

[0009] 2. Weak fiber control: The intermediate control zone is short, which can easily cause fiber drift or loss of control, affecting the uniformity of yarn length.

[0010] 3. Insufficient slipflow drafting capacity: The three-roller structure makes it difficult to achieve stable slipflow drafting effectively, which limits its adaptability to high-quality spinning. Utility Model Content

[0011] In view of this, the purpose of this utility model is to provide a four-roller thin-skin drum-shaped roller spinning drafting mechanism. It adopts a four-roller structure to form a micro-drafting area in the central region of the drafting mechanism, making the fibers easier to straighten. If you want to spin longer fibers, you only need to swap the left and right sides of the middle one thin-skin drum-shaped roller assembly and the middle two thin-skin drum-shaped roller assembly to perform slip-flow drafting. Moreover, the yarn spun by the thin-skin drum-shaped roller assembly is of better quality than that spun by traditional slotted slip-flow drafting.

[0012] To achieve the above objectives, this utility model provides a drafting mechanism for four-roller thin-skin drum-shaped roller spinning, including at least one drafting zone, wherein the drafting zone includes a front drafting zone and a rear drafting zone;

[0013] The front drafting zone includes a front roller, a middle roller 1, a middle roller 2, a middle roller 1 thin-skin drum-shaped roller assembly, a middle roller 2 thin-skin drum-shaped roller assembly, and a front roller.

[0014] The rear drafting zone includes the middle two rollers, the rear roller, the middle two thin-skinned drum roller assembly, and the rear roller.

[0015] The front drafting zone and the rear drafting zone share the same middle two rollers and middle two thin-skin drum-shaped skin roller assembly;

[0016] The first roller and the first thin-skin drum-shaped roller assembly are arranged adjacent to each other, the second roller and the second thin-skin drum-shaped roller assembly are arranged adjacent to each other, the front roller is arranged below the first roller, the rear roller is arranged above the second roller, the front roller and the front roller are arranged adjacent to each other, and the rear roller and the rear roller are arranged adjacent to each other.

[0017] A micro-drafting region is formed between the first and second rollers.

[0018] Preferably, the thin-skinned drum-shaped roller assembly includes a roller, both ends of which are roller bearings, and rubber rollers are installed at the edges of the roller bearings. One end of the roller bearing is a solid roller, and the center of the other end of the roller bearing is fitted with a thin-skinned drum-shaped roller.

[0019] Preferably, the thin-skinned drum-shaped roller assembly includes a roller, both ends of which are roller bearings, and rubber rollers are installed at the edges of the roller bearings. Thin-skinned drum-shaped rollers are installed at the centers of the roller bearings at both ends.

[0020] Preferably, the drafting mechanism further includes a cradle, a cradle support rod, a bell-shaped yarn guide, an upper leather ring pin, a lower pin plate, an upper leather ring, a lower leather ring, a roller seat, and roller bearings. The middle roller, middle second roller, front roller, rear roller, and roller bearings are all mounted on the roller seat. The cradle support rod, bell-shaped yarn guide, upper leather ring pin, lower pin plate, middle first thin-skin drum-shaped roller assembly, middle second thin-skin drum-shaped roller assembly, and front roller are mounted on the cradle. The upper leather ring pin is positioned between the front roller and the middle first thin-skin drum-shaped roller assembly. The upper leather ring is positioned between the upper leather ring pin and the middle first thin-skin drum-shaped roller assembly. The lower leather ring is positioned between the middle first thin-skin drum-shaped roller assembly and the middle second thin-skin drum-shaped roller assembly. The front drafting zone further includes an upper leather ring pin, a lower pin plate, an upper leather ring, and a lower leather ring.

[0021] Another aspect of this utility model provides a thin-skinned drum-shaped rubber roller assembly, including a rubber roller, both ends of which are rubber roller bearings, and rubber rubber rollers are installed at the edges of the rubber roller bearings. One end of the rubber roller bearing is a solid rubber roller, and the center of the other end of the rubber roller bearing is equipped with a thin-skinned drum-shaped rubber roller.

[0022] Another aspect of this utility model provides a double-headed thin-skinned drum-shaped leather roller assembly, including a leather roller, both ends of which are leather roller bearings, and rubber leather rollers are installed at the edges of the leather roller bearings. Thin-skinned drum-shaped leather rollers are installed at the centers of the leather roller bearings at both ends.

[0023] Another aspect of this utility model provides an upper ring pin, characterized in that it includes the above-mentioned thin-skin drum-shaped roller assembly, snap ring, flat round head rivet, upper pin hook, upper pin ring baffle and upper pin plate;

[0024] The circlip and the upper pin ring baffle are disposed on the upper pin plate, and the circlip is disposed between the upper pin ring baffles;

[0025] The upper pin plate is connected to the thin-skin drum-shaped roller assembly via an upper pin hook. The upper pin hook is fixedly connected to the upper pin plate via a flat round-head rivet. The snap ring skin is fixedly connected to the upper pin plate via a flat round-head rivet.

[0026] This utility model has the following beneficial effects:

[0027] 1. By adopting a four-roller structure, a micro-drafting area is formed in the middle of the drafting mechanism, making the entire drafting process more gentle and reasonably distributed. In addition, the positions of the middle roller 1 and the middle roller 2 can be adjusted according to actual needs to meet the spinning requirements of longer fibers, thus expanding the range of suitable fiber lengths for the equipment.

[0028] 2. The micro-drafting zone helps to further straighten and comb the fibers, improves fiber alignment, and enhances the controllability of the fibers during the drafting process, thereby improving the evenness and consistency of the yarn.

[0029] 3. The thin-skinned drum-shaped roller assembly replaces the traditional slotted roller, achieving a smoother slip-flow drafting process. The drum-shaped structure increases the contact area between the roller and the fiber, making the fiber more evenly stressed and effectively avoiding problems such as fiber drift, breakage, fiber damage, and yarn defects, significantly improving drafting stability and yarn evenness. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a perspective view of the drafting mechanism of the four-roller thin-skin drum-shaped roller spinning disclosed in this utility model;

[0032] Figure 2 This is a schematic diagram of the thin-skinned drum-shaped roller assembly disclosed in this utility model;

[0033] Figure 3 This is a schematic diagram of the double-headed thin-skinned drum-shaped roller assembly disclosed in this utility model;

[0034] Figure 4 This is a schematic diagram of the epithelial ring pin disclosed in this utility model. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figure 1 As shown, the drafting mechanism for four-roller thin-skin drum-shaped roller spinning disclosed in this embodiment includes:

[0037] The frame 1 (YJ6-223 frame 1 is used in this embodiment), the frame support rod 2 and the roller seat 3 are provided on the frame 1. The frame 1 is provided with the frame support rod 2, the trumpet-shaped yarn guide 4, the upper leather ring pin 5, the lower pin plate 6, the middle thin leather drum-shaped leather roller assembly 7, the middle two thin leather drum-shaped leather roller assembly 8, the front leather roller 9 and the rear leather roller 10. The roller seat is provided with the middle one roller 11, the middle two roller 12, the front roller 13, the rear roller 14 and the roller bearing 15.

[0038] In this embodiment, the connection between the roller seat and the rocker arm, as well as the installation / fixing method of the other required parts of the drafting mechanism, can refer to the traditional three-roller drafting mechanism, and will not be described in detail here.

[0039] In this embodiment, the drafting mechanism of the four-roller thin-skin drum-shaped roller spinning includes four drafting zones, each of which includes a front drafting zone and a rear drafting zone. The front drafting zone includes a front roller 13, a middle roller 11, a middle roller 2 12, an upper leather ring pin 5, a lower pin plate 6, a front roller 9, a middle roller 1 thin-skin drum-shaped roller assembly 7, a middle roller 2 thin-skin drum-shaped roller assembly 8, an upper leather ring 16, and a lower leather ring 17. The rear drafting zone includes a middle roller 2 12, a rear roller 14, a middle roller 2 thin-skin drum-shaped roller assembly 8, and a rear roller 10. The front and rear drafting zones share the same middle roller 2 12 and the same middle roller 2 thin-skin drum-shaped roller assembly 8.

[0040] In this embodiment, the upper leather ring pin 5 is disposed between the front leather roller 9 and the middle thin leather drum-shaped leather roller assembly 7, the upper leather ring 16 is disposed between the upper leather ring pin 5 and the middle thin leather drum-shaped leather roller assembly 7, and the lower leather ring 17 is disposed between the middle thin leather drum-shaped leather roller assembly 7 and the middle second thin leather drum-shaped leather roller assembly 8.

[0041] In this embodiment, the first roller 11 and the first thin-skin drum-shaped roller assembly 7 are arranged adjacent to each other, the second roller 12 and the second thin-skin drum-shaped roller assembly 8 are arranged adjacent to each other, the front roller 9 is arranged below the first roller 11, the rear roller 10 is arranged above the second roller 12, the front roller 13 and the front roller 9 are arranged adjacent to each other, and the rear roller 14 and the rear roller 10 are arranged adjacent to each other.

[0042] The drafting mechanism in this embodiment consists of four rollers: rear roller 14, middle roller 2 12, middle roller 1 11, and front roller 13. Structurally, it includes a front drafting zone and a rear drafting zone. By using drafting ratios with different speeds, segmented drafting of the fibers is achieved, thus forming a micro-drafting zone between middle roller 2 12 and middle roller 11. This zone provides a small-amplitude drafting on the basis of conventional drafting control, mainly used to further straighten the fibers and improve their alignment consistency, making the yarn straighter more uniform. In this embodiment, middle roller 1 thin-skin drum-shaped roller assembly 7 and middle roller 2 thin-skin drum-shaped roller assembly 8 are respectively equipped at middle roller 1 and middle roller 2, replacing the traditional slotted rollers. The drum-shaped roller design allows the fibers to adhere more closely to the roller surface during drafting, resulting in more uniform force distribution, reducing fiber floating and slippage, thereby enhancing the control of the fibers in the drafting zone. Furthermore, when spinning longer fibers, the position and length of the drafting zone can be adjusted simply by swapping the positions of the middle thin-skin drum roller assembly and the middle two thin-skin drum roller assembly, making it more compatible with the drafting rhythm of long fibers. There is no need to change the overall structure, making the operation simple and highly flexible.

[0043] like Figure 2 As shown, the thin-skinned drum-shaped roller assembly used in this embodiment includes a roller 18, both ends of which are roller bearings 19, and rubber rollers 20 are installed at the edges of the roller bearings. One roller bearing is a solid roller, and a thin-skinned drum-shaped roller 21 is installed at the center of the other roller bearing.

[0044] like Figure 3 As shown, this embodiment uses another type of double-headed thin-skinned drum-shaped roller assembly, which is... Figure 2 The difference lies in the fact that both ends are equipped with thin-skinned drum-shaped rollers 21. Specifically, the rollers include rollers, both ends of which are roller bearings 19, and rubber rollers 20 are installed at the edges of the roller bearings. Thin-skinned drum-shaped rollers 21 are installed at the center of both roller bearings.

[0045] The thin-skinned drum-shaped roller 21 design allows the fiber to adhere more closely to the roller surface during the drafting process, resulting in more uniform force distribution and reduced fiber floating and slippage. This, in turn, enhances the control of the fiber within the drafting zone.

[0046] like Figure 4 As shown, this embodiment also discloses an upper ring pin, including any of the above-mentioned thin-skin drum-shaped roller assembly 27, snap ring 26, flat round head rivet 25, upper pin hook 24, upper pin ring baffle 23 and upper pin plate 22.

[0047] The snap ring 26 and the upper pin ring baffle 23 are disposed on the upper pin plate 22, and the snap ring 26 is disposed between the upper pin ring baffle 23;

[0048] The upper pin plate 22 is connected to the thin-skin drum-shaped roller assembly 27 via the upper pin hook 24. The upper pin hook 24 is fixedly connected to the upper pin plate 22 via the flat round head rivet 25. The snap ring skin 26 is fixedly connected to the upper pin plate 22 via the flat round head rivet 25.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drafting mechanism for four-roller thin-skin drum-shaped roller spinning, characterized in that, It includes at least one drawing zone, which includes a front drawing zone and a rear drawing zone; The front drafting zone includes a front roller, a middle roller 1, a middle roller 2, a middle roller 1 thin-skin drum-shaped roller assembly, a middle roller 2 thin-skin drum-shaped roller assembly, and a front roller. The rear drafting zone includes the middle two rollers, the rear roller, the middle two thin-skinned drum roller assembly, and the rear roller. The front drafting zone and the rear drafting zone share the same middle two rollers and middle two thin-skin drum-shaped skin roller assembly; The first roller and the first thin-skin drum-shaped roller assembly are arranged adjacent to each other, the second roller and the second thin-skin drum-shaped roller assembly are arranged adjacent to each other, the front roller is arranged below the first roller, the rear roller is arranged above the second roller, the front roller and the front roller are arranged adjacent to each other, and the rear roller and the rear roller are arranged adjacent to each other. A micro-drafting region is formed between the first and second rollers.

2. The drawing mechanism according to claim 1, characterized in that, The thin-skinned drum-shaped roller assembly includes a roller, both ends of which are roller bearings, and rubber rollers are installed at the edges of the roller bearings. One end of the roller bearing is a solid roller, and the center of the other end of the roller bearing is fitted with a thin-skinned drum-shaped roller.

3. The drawing mechanism according to claim 1, characterized in that, The thin-skinned drum-shaped roller assembly includes a roller, both ends of which are roller bearings, and rubber rollers are installed at the edges of the roller bearings. Thin-skinned drum-shaped rollers are installed at the center of both roller bearings.

4. The drawing mechanism according to claim 1, characterized in that, The drafting mechanism also includes a cradle, a cradle support rod, a bell-shaped yarn guide, an upper leather ring pin, a lower pin plate, an upper leather ring, a lower leather ring, a roller seat, and roller bearings. The middle roller, the middle second roller, the front roller, the rear roller, and the roller bearings are all mounted on the roller seat. The cradle support rod, the bell-shaped yarn guide, the upper leather ring pin, the lower pin plate, the middle first thin-skin drum-shaped roller assembly, the middle second thin-skin drum-shaped roller assembly, and the front roller are mounted on the cradle. The upper leather ring pin is positioned between the front roller and the middle first thin-skin drum-shaped roller assembly. The upper leather ring is positioned between the upper leather ring pin and the middle first thin-skin drum-shaped roller assembly. The lower leather ring is positioned between the middle first thin-skin drum-shaped roller assembly and the middle second thin-skin drum-shaped roller assembly. The anterior stretching zone also includes an upper skin ring pin, a lower pin plate, an upper skin ring, and a lower skin ring.

5. A thin-skinned drum-shaped roller assembly, characterized in that, The device includes a rubber roller, both ends of which are rubber roller bearings, and rubber rubber rollers are installed at the edges of the rubber roller bearings. One end of the rubber roller bearing is a solid rubber roller, and the center of the other end of the rubber roller bearing is equipped with a thin-skinned drum-shaped rubber roller.

6. A double-headed thin-skinned drum-shaped roller assembly, characterized in that, The device includes a rubber roller, both ends of which are rubber roller bearings, and rubber rubber rollers are installed at the edges of the rubber roller bearings. Thin-skinned drum-shaped rubber rollers are installed at the center of both ends of the rubber roller bearings.

7. A type of epithelial ring pin, characterized in that, Includes the thin-skinned drum-shaped roller assembly, snap ring, flat round head rivet, upper pin hook, upper pin ring baffle and upper pin plate as described in claim 5 or 6; The circlip and the upper pin ring baffle are disposed on the upper pin plate, and the circlip is disposed between the upper pin ring baffles; The upper pin plate is connected to the thin-skin drum-shaped roller assembly via an upper pin hook. The upper pin hook is fixedly connected to the upper pin plate via a flat round-head rivet. The snap ring skin is fixedly connected to the upper pin plate via a flat round-head rivet.

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