lower shaft for a spinning frame

Abstract

The utility model provides a lower xiao for spinning frame relates to spinning frame technical field, this application includes lower xiao body, the gap is set up with the gap respectively in the lower xiao body lower edge both ends, the apron passes through the gap, the recess is set up in the working face edge portion of lower xiao body upper end, the standby apron passes through the recess. Through the gap and the recess joint action, enhance the fiber control force, promote the yarn quality, as a whole, the lower xiao for spinning frame of this application makes the fiber control force of draft zone significantly enhance, and the fiber straight parallelism is better, and the yarn arrangement is more neat.

Description

Technical Field

[0001] This utility model relates to the field of ring spinning machine technology, and in particular to a lower pin for ring spinning machines. Background Technology

[0002] The spinning bottom sheath is a core component of the drafting zone of a ring spinning machine, and its structural design directly affects the control of fibers in the drafting zone and the final yarn quality. Existing spinning bottom sheaths have significant structural defects, exhibiting weak control over fibers in the drafting zone, resulting in a large number of floating fibers. These problems directly lead to a series of adverse consequences: the finished yarn has a high CV value, with more thick and thin sections and more neps; simultaneously, the fiber speed variation during drafting is unstable, resulting in significant uneven drafting and a high yarn breakage rate, typically 10-15 breaks per thousand spindles. This severely impacts production efficiency and product competitiveness, failing to meet the company's demands for improved yarn quality and production efficiency.

[0003] Therefore, there is an urgent need for a type of lower winding for ring spinning machines that can significantly enhance fiber control in the drafting zone, improve fiber straightening and parallelism, and result in more orderly yarn arrangement. Utility Model Content

[0004] The purpose of this invention is to provide a lower winding mechanism for spinning frames, which solves the technical problems of weak control over fibers in the drafting zone and uneven drafting in existing spinning lower winding mechanisms. The various technical effects of the preferred technical solutions provided by this invention are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The lower clip for a spinning frame provided by this utility model includes: lower body; The lower edge of the lower body has notches at both ends, and the rubber ring passes through the notches. A groove is formed on the edge of the working surface at the upper end of the lower cap, and a spare rubber ring passes through the groove.

[0006] Preferably, the top surface of the lower body is configured as a front edge plane and a rear edge plane, the height of the front edge plane is lower than the height of the rear edge plane, a smooth dividing line is provided between the front edge plane and the rear edge plane, and the groove is formed on the edge of the rear edge plane.

[0007] Preferably, the depth of the notch is 1mm-2mm.

[0008] Preferably, the grooves are provided in 2, 3 or 4 groups, which are longitudinally distributed on the edge of the rear edge plane.

[0009] Preferably, the cross-section of the lower body is T-shaped.

[0010] Preferably, the width of the leading edge plane is smaller than the width of the trailing edge plane.

[0011] Preferably, the depth of the groove is between 1mm and 3mm.

[0012] Preferably, the edge of the trailing plane is configured as a curved surface.

[0013] In the technical solution provided by this utility model, by cutting off portions at both ends of the lower edge of the lower clip to form notches, the distribution of fiber friction in the drafting zone is made more reasonable, which can stably exert the fiber guiding effect, keep the sliver at an appropriate density, ensure the stable transmission of drafting force and the effective exertion of guiding force, and enable the fiber to change speed stably under tension and straightening, so as to concentrate the fiber speed change point forward at the nip and keep it stable, thereby achieving effective control of fiber movement. The groove on the upper working surface is specifically used to place spare rubber aprons, avoiding direct contact between the rubber aprons and the rollers to prevent crushing, and ensuring the smooth operation of the rubber aprons. Through the combined effect of the notches and grooves, the fiber control force is enhanced and the yarn quality is improved. Overall, the lower clip for spinning machines of this application significantly enhances the fiber control force in the drafting zone, improves the straightening and parallelism of the fibers, and makes the yarn arrangement more neat. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is an isometric schematic diagram of the lower pin of the present invention used in a spinning machine; Figure 2 This is a front view schematic diagram of the lower pin of the present invention used in a spinning machine; Figure 3 This is a left-side view of the lower pin of the present invention used in a spinning machine.

[0016] In the diagram: 1. Lower body; 2. Rear edge plane; 3. Notch; 4. Groove; 5. Front edge plane; 6. Smooth dividing line. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] refer to Figure 1-3 A specific embodiment of this utility model provides a lower pin for a spinning machine, comprising: Lower body 1; Notch 3, notches 3 are respectively opened at both ends of the lower edge of the lower body 1, and the leather ring passes through the notch 3; Groove 4 is formed on the edge of the working surface at the upper end of the lower body 1, and the spare rubber ring passes through groove 4.

[0019] Further optimization of the scheme: the top surface of the lower body 1 is set as a front edge plane 5 and a rear edge plane 2. The height of the front edge plane 5 is lower than the height of the rear edge plane 2. A smooth dividing line 6 is set between the front edge plane 5 and the rear edge plane 2. The groove 4 is opened on the edge of the rear edge plane 2.

[0020] The existing structure of the yarn undercoat has significant defects, resulting in weak control over fibers in the drafting zone and a large number of floating fibers. These problems directly lead to a series of adverse consequences: the finished yarn has a high CV value, with more thick and thin sections and more neps; simultaneously, the fiber speed variation during drafting is unstable, and uneven drafting is prominent, resulting in a high yarn breakage rate, typically 10-15 breaks per thousand spindles. This severely impacts production efficiency and product competitiveness, failing to meet the company's demands for improved yarn quality and production efficiency. In this application, by cutting off portions at both ends of the lower edge of the lower clip 1 to form notches 3, the distribution of fiber friction in the drafting zone is made more reasonable, enabling stable fiber guiding, maintaining appropriate sliver density, ensuring stable transmission of drafting force and effective use of guiding force, allowing the fiber to change speed stably under tension and straightening, and causing the fiber speed change point to concentrate and remain stable at the forward nip, thus achieving effective control of fiber movement; the groove 4 on the upper working surface is specifically used to place spare aprons, avoiding direct contact between the aprons and rollers to prevent crushing, and ensuring smooth apron operation; through the combined action of notches 3 and grooves 4, fiber control is enhanced and yarn quality is improved. Overall, the lower clip of this application for a spinning frame significantly enhances fiber control in the drafting zone, improves fiber straightening and parallelism, and results in more neat yarn arrangement.

[0021] The design was further optimized so that the depth of notch 3 is 1mm-2mm.

[0022] refer to Figure 1-2The depth of the notch 3 is preferably 1.5mm, while ensuring that the end face of the notch 3 is flat and forms a smooth transition with the lower edge of the lower body 1.

[0023] Further optimization of the design: the groove 4 is provided in 2, 3 or 4 groups, which are longitudinally distributed on the edge of the rear edge plane 2; the depth of the groove 4 is 1mm-3mm.

[0024] refer to Figure 1 On the upper working surface of the lower body 1, two symmetrically distributed grooves 4 are machined by milling. The width and depth of the grooves 4 are adapted to the outer dimensions of the spare rubber ring to ensure that the spare rubber ring will not loosen after being inserted and to maintain a safe distance from the roller to avoid contact and squeezing.

[0025] When in use, the modified lower tensioner body 1 is installed in the drafting area of ​​the spinning machine, and the spare rubber ring is placed in the groove 4. The notches 3 at both ends of the lower edge optimize the friction boundary of the drafting area and achieve stable control of the fiber. If used in conjunction with the new automatic tensioning upper tensioner, the "concave" and "arched" phenomena of the rubber ring can be further eliminated, achieving dual optimization of the drafting area and achieving a 1+1>2 effect.

[0026] Further optimization of the scheme: the cross-section of the lower body 1 is T-shaped; the width of the front edge plane 5 is smaller than the width of the rear edge plane 2.

[0027] refer to Figure 3 The cross-section of the lower cap 1 is set to T-shape. When the leading edge plane 5 and the trailing edge plane 2 of the T-shaped cross-section contact the apron, the pressure can be evenly transmitted along the width of the sliver through a smooth transition edge (avoiding sharp edges). Combined with the 1.5mm notches 3 at both ends of the lower edge, the friction force is further concentrated towards the "front of the drafting jaws," making the fiber speed change point more stable (reducing uneven drafting caused by speed change point dispersion), thereby enhancing fiber control and reducing the evenness CV value. The "bending inertia moment" of the vertical part of the lower cap 1 improves the overall rigidity, preventing bending deformation of the lower cap 1 due to drafting force during long-term use and extending its service life.

[0028] To further optimize the design, the edge of the rear plane 2 is set as a curved surface to avoid damaging the rubber band.

[0029] Through the above-mentioned solutions, the lower winding mechanism for spinning frames in this application achieves the following effects: From the perspective of enhancing fiber control, the modified lower winding mechanism significantly enhances fiber control in the drafting zone, resulting in better fiber straightening and parallelism, and more neat yarn arrangement; From the perspective of improving yarn quality: the finished yarn linearity CV value improves by more than 1%, and the improvement reaches more than 1.5% when combined with the automatic tensioning upper winding mechanism; the number of thick and thin threads and neps decreases by about 30%, and the improvement reaches more than 35% when combined with the automatic tensioning upper winding mechanism; From the perspective of reducing breakage rate: fiber speed changes are more stable, reducing breakage caused by uneven drafting. When used alone, the number of breakages per thousand spindles is reduced to 7-9, and when combined with the automatic tensioning upper winding mechanism, it stabilizes at about 5; From the perspective of optimizing production efficiency: production stability is enhanced, raw material adaptability is broadened, the belt apron runs smoothly without instantaneous stops, and product competitiveness and overall enterprise economic benefits are significantly improved.

[0030] The proposed modification has a simple structure and low cost, and can directly upgrade existing spinning machines without altering other structures, making it highly practical and valuable for widespread application.

[0031] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., used herein to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In this description, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A lower pin for a spinning frame, characterized in that, include: Lower body (1); The notch (3) is provided at both ends of the lower edge of the lower body (1), and the leather ring passes through the notch (3). The groove (4) is formed on the edge of the working surface at the upper end of the lower cap (1), and the spare rubber ring passes through the groove (4).

2. The lower pin for a spinning frame according to claim 1, characterized in that, The top surface of the lower body (1) is configured as a front edge plane (5) and a rear edge plane (2). The height of the front edge plane (5) is lower than the height of the rear edge plane (2). A smooth dividing line (6) is provided between the front edge plane (5) and the rear edge plane (2). The groove (4) is opened on the edge of the rear edge plane (2).

3. The lower pin for a spinning frame according to claim 1, characterized in that, The depth of the notch (3) is 1mm-2mm.

4. The lower pin for a spinning frame according to claim 2, characterized in that, The groove (4) is provided in 2, 3 or 4 groups, which are longitudinally distributed on the edge of the rear edge plane (2).

5. The lower pin for a spinning frame according to claim 1, characterized in that, The cross-section of the lower body (1) is T-shaped.

6. The lower pin for a spinning frame according to claim 2, characterized in that, The width of the leading edge plane (5) is smaller than the width of the trailing edge plane (2).

7. The lower pin for a spinning frame according to claim 1, characterized in that, The depth of the groove (4) is between 1 mm and 3 mm.

8. The lower pin for a spinning frame according to claim 2, characterized in that, The edge of the trailing plane (2) is set as a curved surface.

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