A pressure bar device for the drafting mechanism of a spinning frame

Abstract

This utility model discloses a pressure bar device for the drafting mechanism of a spinning frame, specifically relating to the field of pressure bar technology. It includes a vertical rod with a support and guiding assembly. The support and guiding assembly includes a support sleeve disposed on the outside of the vertical rod, and a pad at the top of the support sleeve. The pad has several carding blocks for yarn management, and a carding groove is formed between each adjacent carding block for conveying the yarn between adjacent carding blocks. This utility model, by setting multiple carding blocks and carding grooves on the pad, can classify and precisely guide multiple strands of yarn, effectively preventing the yarn from tangling during drafting and ensuring the stable movement trajectory of each fiber bundle. Simultaneously, the abrasion-reducing slope on the outside of the carding block adopts an arc transition design, significantly reducing the friction between the yarn and the carding block, reducing yarn wear, and avoiding problems such as fiber breakage and pilling caused by friction.

Description

Technical Field

[0001] This utility model relates to the field of pressure bar technology, and more specifically, to a pressure bar device for the drafting mechanism of a spinning machine. Background Technology

[0002] As a core piece of equipment in the spinning process, the ring spinning machine's performance directly determines the quality and production efficiency of the finished yarn. The core function of the ring spinning machine is to process roving semi-finished products with coarse linear density and loose fiber arrangement into finished fine yarn with uniform linear density, tightly packed fibers, and meeting the requirements for subsequent weaving or knitting processing, through a series of processes such as drafting and twisting. Among these, the drafting mechanism is the core component of the ring spinning machine that realizes the conversion from roving to fine yarn. Essentially, it is a mechanical system that requires precise control of fiber movement. Its ability to hold the fiber bundle stably and control the synchronization of movement directly affects key quality indicators such as yarn evenness and breaking strength.

[0003] During drafting, the fiber bundle needs to be stretched in an orderly manner under the gripping action of the roller jaws. However, traditional drafting mechanisms rely solely on the gripping points formed by the roller jaws, resulting in excessively long free movement distances for the floating fibers. This causes some floating fibers to fail to move synchronously with the gripped fibers, easily leading to premature slippage or delayed movement, which in turn causes fiber disorder and ultimately affects the yarn evenness. Simultaneously, the insufficient friction between fibers in traditional drafting mechanisms makes it difficult to form a stable "additional friction field," further exacerbating the risk of fiber slippage and causing quality defects such as thick and thin spots and knots in the yarn. Furthermore, existing drafting mechanisms lack effective yarn combing and guiding structures, making it easy for multiple strands of yarn to entangle and rub against each other during drafting. This not only increases the probability of yarn wear but also leads to unstable drafting resistance, affecting production continuity and product consistency.

[0004] As an important auxiliary component of the drafting mechanism, the pressure bar, after being inserted into the drafting zone, adds an "auxiliary gripping point" between the original roller jaws, which theoretically can shorten the free movement distance of the floating fibers and enhance the friction between fibers. However, existing pressure bar devices generally suffer from unreasonable structural design problems: some pressure bars lack adaptive pressure adjustment functions, and cannot flexibly adjust the applied pressure according to changes in fiber bundle thickness, material, etc., resulting in excessive pressure causing excessive stretching and damage to the yarn, or insufficient pressure failing to provide an effective gripping effect; some pressure bars are not equipped with a dedicated yarn combing and tensioning structure, and problems such as entanglement and loosening still exist during yarn transport, failing to fully utilize the auxiliary drafting effect of the pressure bar. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pressure bar device for the drafting mechanism of a spinning machine, which aims to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a pressure bar device for the drafting mechanism of a spinning frame, including a vertical rod, on which a support and guiding component is provided; The support and guide assembly includes a support sleeve disposed on the outside of the upright, a pad block disposed at the top of the support sleeve, and a plurality of combing blocks for managing the line disposed on the pad block, and a combing groove is formed between each two adjacent combing blocks for conveying the line between the two adjacent combing blocks. A connecting sleeve is fitted on the outer side of the pad block, and a transverse extension rod is provided on the outer side of the connecting sleeve. A tensioning rod is provided at one end of the transverse extension rod, and the tensioning rod is used to abut against the outer side of the line body for tensioning.

[0007] Optionally, in one possible implementation, the connecting sleeve is rotatably connected to the pad block, the tensioning rod is inserted into the transverse extension rod, and a guide rod is provided at the bottom end of the support sleeve. The guide rod is sleeved on the outside of the upright and slidably connected to the upright. Optionally, in one possible implementation, a spring is provided between the upright and the support sleeve, the top end of the spring extending to the top of the inner cavity of the support sleeve, a cross plate is provided at the bottom end of the upright, the cross plate is threadedly connected to the upright, a wear-reducing slope is provided on the outer side of the combing block to reduce the friction generated by the yarn being combed through the combing groove, the pad is threadedly connected to the support sleeve, the support sleeve, the upright and the pad are all in the same axial direction, the connecting sleeve is integrally formed with the transverse extension rod, and the top end of the tensioning rod extends to the top of the combing groove; The technical effects and advantages of this utility model are as follows: By setting multiple carding blocks and carding grooves on the pad, multiple strands of yarn can be classified, carded, and precisely guided, effectively preventing the yarn from tangling during the drafting process and ensuring the stable movement trajectory of each fiber bundle. At the same time, the abrasion-reducing slope on the outside of the carding block adopts an arc transition design, which greatly reduces the friction between the yarn and the carding block, reduces yarn wear, and avoids problems such as fiber breakage and pilling caused by friction.

[0008] With the adjustable tension bar and the design of the abutting yarn body, the yarn tension can be flexibly adjusted according to actual needs. Combined with the adaptive elastic support provided by the spring, the auxiliary holding pressure applied by the pressure bar to the fiber bundle is always kept within a reasonable range, forming a stable additional friction field. This significantly shortens the free movement distance of the floating fibers, effectively inhibits fiber slippage, and ensures that the floating fibers and the held fibers move synchronously, ultimately improving the yarn evenness and breaking strength. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0010] Figure 1 This is a front view of the overall structure of this utility model.

[0011] Figure 2 This is a side view of the overall structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the connecting sleeve, transverse extension bar, tensioning bar, pad, combing block, and combing groove of this utility model.

[0013] Figure 4 This is a schematic diagram of the upright, spring, horizontal plate, support sleeve, and guide rod of this utility model.

[0014] Figure 5 This is a schematic diagram of the pad, combing block, combing groove, connecting sleeve and tensioning rod of this utility model.

[0015] The attached diagram is labeled as follows: 1. Upright pole; 2. Support sleeve; 3. Pad block; 4. Combing block; 5. Combing groove; 6. Connecting sleeve; 7. Horizontal extension bar; 8. Tensioning bar; 9. Guide bar; 10. Spring; 11. Horizontal plate. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Example 1

[0018] This embodiment discloses a pressure bar device for the drafting mechanism of a spinning frame, which aims to solve the technical problems in the existing drafting mechanism of a spinning frame, such as the fiber bundle easily slipping and the yarn conveying disorder during the drafting process, and the pressure bar's poor auxiliary holding effect on the fiber bundle and excessive yarn friction affecting the yarn quality.

[0019] Specifically, as shown in Figures 1 and 2, the pressure bar device of the drafting mechanism of the spinning machine includes a vertical rod 1, which serves as the core support component of the entire device. The bottom end of the vertical rod 1 is threadedly connected to a horizontal plate 11, which can be fixedly connected to the frame of the drafting mechanism of the spinning machine by bolts to achieve stable installation of the entire device.

[0020] As shown in Figure 4, a support sleeve 2 is fitted onto the outer side of the upright 1. A guide rod 9 is fixedly connected to the bottom end of the support sleeve 2. The guide rod 9 is fitted onto the outer side of the upright 1 and slidably connected to the upright 1. Through the cooperation between the guide rod 9 and the upright 1, the support sleeve 2 can be stably raised and lowered along the axial direction of the upright 1, avoiding deviation. A spring 10 is provided between the upright 1 and the support sleeve 2. The top end of the spring 10 extends to the top of the inner cavity of the support sleeve 2. When the spring 10 is in its naturally extended state, it can apply an upward elastic support force to the support sleeve 2, so that the support sleeve 2 drives the subsequent components to maintain a preset height position. At the same time, it can adaptively adjust according to the pressure changes during the actual stretching process.

[0021] As shown in Figures 3 and 5, a pad 3 is threadedly connected to the top of the support sleeve 2. The support sleeve 2, the upright 1, and the pad 3 are all on the same axial direction, ensuring uniform and stable force transmission. The threaded connection facilitates the disassembly and replacement of the pad 3. Several combing blocks 4 for yarn management are integrally formed on the pad 3. Combing grooves 5 are formed between adjacent combing blocks 4. The number of combing grooves 5 can be flexibly set according to the drafting count of the spinning machine. They are used to transport yarn between adjacent combing blocks 4, achieving the classification and combing of multiple strands of yarn and preventing yarn from tangling. An anti-friction slope is provided on the outer side of the combing block 4. This anti-friction slope adopts a rounded transition structure, which can effectively reduce the friction between the yarn and the combing block 4 when the yarn is combed and transported through the combing grooves 5, reducing yarn wear and ensuring yarn quality.

[0022] Example 2

[0023] Based on Embodiment 1, this embodiment discloses a pressure bar device for the drafting mechanism of a spinning machine, as shown in Figures 3 and 5. A connecting sleeve 6 is fitted on the outer side of the pad 3, and the connecting sleeve 6 is rotatably connected to the pad 3, allowing the connecting sleeve 6 to rotate flexibly around the axis of the pad 3, facilitating the adjustment of the angle of subsequent components. A transverse extension rod 7 is integrally formed on the outer side of the connecting sleeve 6. The integrally formed structure enhances the connection strength between the connecting sleeve 6 and the transverse extension rod 7, ensuring stable force. A tensioning rod 8 is inserted into one end of the transverse extension rod 7, and the top end of the tensioning rod 8 extends to the top of the carding groove 5. The insertion depth of the tensioning rod 8 can be adjusted back and forth along the axial direction of the transverse extension rod 7, thereby adjusting the pressure it exerts against the outer side of the yarn, realizing the tension adjustment of the yarn, and avoiding slippage caused by slack in the yarn during drafting.

[0024] The specific working principle is as follows: the upright 1 is fixed to the frame of the drafting mechanism of the spinning machine by the horizontal plate 11, ensuring that the whole device is installed firmly, and the support sleeve 2 is kept at the preset height under the elastic support of the spring 10.

[0025] The multiple strands of yarn to be drawn are passed through the combing grooves 5 formed by adjacent combing blocks 4 on the pad block 3. The combing blocks 4 classify and limit the strands of yarn to prevent them from tangling together. At the same time, the abrasion-reducing slope on the outside of the combing blocks 4 reduces the friction during the yarn conveying process.

[0026] Adjust the insertion depth of the tension rod 8 on the transverse extension rod 7 according to the tightness of the line, so that the top of the tension rod 8 touches the outside of the line and applies appropriate tension to ensure that the line is taut; at the same time, the connecting sleeve 6 can be rotated to adjust the contact angle of the tension rod 8 so that the tension is evenly applied to the line.

[0027] During the drawing process, the fiber bundle exerts downward pressure on the pressure bar device. The support sleeve 2 slides downward along the upright 1 via the guide rod 9. The spring 10 is compressed and generates a reverse elastic force, forming an adaptive pressure adjustment mechanism. This mechanism always provides appropriate auxiliary holding pressure to the fiber bundle, increases the friction between fibers, shortens the free movement distance of the floating fibers, prevents the fibers from slipping prematurely or lagging behind, ensures that the fiber bundle moves synchronously with the held fibers, and improves the drawing quality.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drawing frame pressure bar device for a drawing frame, comprising a vertical rod (1), characterised in that: The upright (1) is provided with a support and drainage component; The support and guide assembly includes a support sleeve (2) set on the outside of the upright (1), a pad (3) is set at the top of the support sleeve (2), and a plurality of combing blocks (4) for arranging the line are set on the pad (3), and a combing groove (5) is formed between each two adjacent combing blocks (4) for conveying the line between the two adjacent combing blocks (4); The outer side of the pad (3) is fitted with a connecting sleeve (6), and the outer side of the connecting sleeve (6) is provided with a transverse extension rod (7). One end of the transverse extension rod (7) is provided with a tension rod (8), which is used to abut against the outer side of the line body for tensioning.

2. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: The connecting sleeve (6) is rotatably connected to the pad (3), and the tensioning rod (8) is inserted into the transverse extension rod (7).

3. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: The bottom end of the support sleeve (2) is provided with a guide rod (9), which is sleeved on the outside of the upright (1) and slidably connected to the upright (1).

4. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: A spring (10) is provided between the upright (1) and the support sleeve (2), with the top end of the spring (10) extending to the top of the inner cavity of the support sleeve (2).

5. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: The bottom end of the upright (1) is provided with a horizontal plate (11), which is threadedly connected to the upright (1).

6. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: The outer side of the combing block (4) is provided with a wear-reducing slope to reduce the friction generated by the combing of the yarn through the combing groove (5).

7. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: The pad (3) is threadedly connected to the support sleeve (2), and the support sleeve (2), the upright (1) and the pad (3) are all on the same axial direction.

8. The pressure bar device for the drafting mechanism of a spinning frame according to claim 1, characterized in that: The connecting sleeve (6) is integrally formed with the transverse extension bar (7), and the top of the tensioning bar (8) extends to the top of the combing groove (5).

Images