Rapid fixing structure of ceramic rod of spinning ceramic guide

Abstract

This utility model discloses a quick-fixing structure for a ceramic rod in a spinning ceramic guide, addressing the technical problems of low installation accuracy, cumbersome and time-consuming assembly processes, and high spare parts turnover requirements in existing fixing structures. The structure includes a ceramic rod, a support rod, a rubber sleeve, and a locking bolt. The support rod is a stepped cylindrical structure with a threaded hole at its small end that matches the small end of the locking bolt. The small end of the support rod extends into the ceramic rod, while the large end is used to mount on the base of the spinning ceramic guide. The rubber sleeve is an elastically tensionable sleeve; in its untensioned state, its inner diameter matches the outer diameter of the small end of the locking bolt, and its outer diameter is smaller than the inner diameter of the ceramic rod. The rubber sleeve is coaxially disposed within the ceramic rod, with one end abutting against the small end of the support rod and the other end abutting against the large end of the locking bolt. The small end of the locking bolt passes through the rubber sleeve and extends into the threaded hole to connect with the support rod. This fixing device has advantages such as quick replacement, high installation accuracy, and reliable structure.

Description

Technical Field

[0001] This utility model relates to a ceramic guide for chemical fiber spinning, specifically to a quick-fixing structure for the ceramic rod of a spinning ceramic guide. Background Technology

[0002] In chemical fiber spinning production, ceramic guides (or yarn guides) are key components for guiding the movement of the yarn bundle, and their core is a tubular ceramic rod. Currently, in the assembly process of ceramic guides, glue is commonly used to fix the inner hole of the ceramic rod to a metal support rod. However, this method has the following significant drawbacks:

[0003] (1) Low installation accuracy: In order to ensure glue filling, a bonding gap of about 0.3mm needs to be reserved between the inner hole of the ceramic rod and the metal rod. However, it is difficult to accurately control the position of the ceramic rod during the bonding process, which can easily lead to a large eccentricity of the ceramic rod. Moreover, the ceramic rod is prone to tilting after installation, which seriously affects the accuracy and adjustment effect of wire bundling (merging multiple wire bundles) on site.

[0004] (2) The assembly process is cumbersome and time-consuming: Each time the ceramic rod is replaced, it is necessary to go through multiple steps such as disassembling off the line, removing residual glue, cleaning the metal rod, reapplying glue, and waiting for the glue to cure (dry), which makes the replacement process time-consuming and inefficient.

[0005] (3) High demand for spare parts: Due to the complexity and time-consuming assembly process, in order to meet the rapid replacement requirements of continuous production on site, a large number of pre-bonded ceramic rod components must be prepared as spare parts, which increases spare parts inventory and management costs.

[0006] In summary, there is an urgent need for a ceramic rod fixing device that can overcome the above-mentioned defects, so as to achieve fast, accurate and convenient installation and replacement of ceramic rods. Utility Model Content

[0007] The purpose of this invention is to solve the technical problems of low installation accuracy, cumbersome and time-consuming assembly process, and large demand for spare parts in existing ceramic rod fixing methods, and to provide a quick fixing structure for ceramic rods in spinning ceramic guides.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A quick-fixing structure for a ceramic rod in a spinning ceramic guide includes a ceramic rod; its distinctive feature is that:

[0010] It also includes support rods, rubber sleeves, and locking bolts;

[0011] The support rod is a stepped cylindrical structure, with a threaded hole at its small end that matches the small end of the locking bolt, and the central axis of the threaded hole coincides with the axis of the support rod; the small end of the support rod extends into the ceramic rod, and the large end is used to install on the base of the spinning ceramic guide.

[0012] The rubber sleeve is an elastic tensioning rubber sleeve. In the non-tensioned state, its inner diameter is adapted to the outer diameter of the small end of the locking bolt, and the outer diameter is smaller than the inner diameter of the ceramic rod. The rubber sleeve is coaxially set inside the ceramic rod, with one end abutting against the end of the small end of the support rod and the other end abutting against the large end of the locking bolt. The small end of the locking bolt passes through the rubber sleeve and extends into the threaded hole to connect with the support rod.

[0013] The outer diameter of the small end of the support rod is adapted to the inner diameter of the ceramic rod, and the outer diameter is consistent with the outer diameter of the ceramic rod; the outer diameter of the large end of the locking bolt is smaller than the inner diameter of the ceramic rod.

[0014] Furthermore, let the length of the ceramic rod be d1, the length of the small end of the support rod be d2, the axial lengths of the rubber sleeve in the untensioned and tensioned states be d3 and d4 respectively, and the length of the small end and the thickness of the large end of the locking bolt be d5 and d6 respectively. Then we have: d2 + d3 + d6 ≥ d1, and d2 + d4 + d6 ≤ d1; d5 > d3, and d5 + d6 ≥ d1 - d2. In the locked state, the large end of the locking bolt is flush with or recessed into the ceramic rod, effectively reducing the risk of the filament bundle getting caught during operation.

[0015] Furthermore, when the rubber sleeve is not under tension, the clearance between it and the ceramic rod is ≤0.1mm, which effectively reduces the installation eccentricity of the ceramic rod, ensures the coaxiality and perpendicularity after installation, and helps to improve the on-site wire twisting accuracy and adjustment effect.

[0016] Furthermore, the length of the rubber sleeve in the non-tensioned state is 15-30mm, which can provide a suitable amount of tensioning friction.

[0017] Furthermore, the material of the rubber sleeve is selected as butyl rubber, which has balanced oil resistance and acetone resistance.

[0018] Furthermore, the locking bolt is an internal hex bolt.

[0019] The advantages of this utility model compared to the prior art are as follows:

[0020] 1. This utility model provides a quick-fixing structure for the ceramic rod of a spinning ceramic guide, including a ceramic rod, a support rod, a rubber sleeve, and a locking bolt. The locking bolt connects the ceramic rod to the support rod, while the rubber sleeve is compressed to expand radially, thus tightly filling and supporting the inner wall of the ceramic rod, achieving quick fixation between the ceramic rod and the support rod. This utility model eliminates the need for glue assembly, making replacement much faster. When replacing the ceramic rod on-site, simply loosen the locking bolt, replace it with a new ceramic rod, and then tighten the locking bolt to complete the installation. This eliminates the tedious steps of disassembly, cleaning residual glue, washing, applying glue, and drying, significantly shortening replacement time and saving labor.

[0021] 2. This utility model adopts a mechanical tensioning structure. When the rubber sleeve is not tensioned, the fit gap between it and the inner wall of the ceramic rod can be controlled within 0.1mm, which effectively reduces the installation eccentricity of the ceramic rod, ensures the coaxiality and perpendicularity after installation, and helps to improve the on-site wire twisting accuracy and adjustment effect.

[0022] 3. This utility model significantly reduces the demand for spare parts: Since the replacement process is extremely quick, there is no need to pre-assemble a large number of bonded ceramic rod assemblies as turnover spare parts. Only a small number of ceramic rods and necessary support rods, rubber sleeves and locking bolts need to be stored, which significantly reduces spare parts inventory costs and management burden.

[0023] 4. The structure of this utility model is reliable and not easy to get caught on the wire: the large end of the locking bolt can be hidden inside the ceramic rod, making the outer surface of the ceramic rod flat and smooth, effectively reducing the risk of the wire bundle getting caught during operation. Attached Figure Description

[0024] Figure 1 This is a structural diagram showing the usage state of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the support rod in an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the rubber sleeve in an embodiment of this utility model.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1-Support rod, 11-Threaded hole, 2-Rubber sleeve, 3-Locking bolt, 4-Ceramic rod. Detailed Implementation

[0029] To make the objectives, advantages and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1As shown, this embodiment provides a quick-fixing structure for the ceramic rod of a spinning ceramic guide, including a ceramic rod 4, a support rod 1, a rubber sleeve 2, and a locking bolt 3.

[0031] Combination Figure 1 and Figure 2 As shown, the support rod 1 is a metal support rod with a stepped cylindrical structure. The small end of the support rod 1 has a threaded hole 11 that matches the small end of the locking bolt 3, and the central axis of the threaded hole 11 coincides with the axis of the support rod 1. The small end of the support rod 1 extends into the ceramic rod 4, which has a cylindrical structure and is used to guide the filament bundle. The large end of the support rod 1 is used to install on the base (not shown in the figure) of the spinning ceramic guide.

[0032] Combination Figure 1 and Figure 3 As shown, the rubber sleeve 2 is an elastic tensioning rubber sleeve. In the non-tensioned state, its inner diameter matches the outer diameter of the small end of the locking bolt 3, and its outer diameter is smaller than the inner diameter of the ceramic rod 4. The rubber sleeve 2 is coaxially arranged inside the ceramic rod 4, with one end abutting against the end of the small end of the support rod 1 and the other end abutting against the large end of the locking bolt 3; the small end of the locking bolt 3 passes through the rubber sleeve 2 and extends into the threaded hole 11 to connect with the support rod 1.

[0033] The outer diameter of the small end of the support rod 1 is matched with the inner diameter of the ceramic rod 4, and the outer diameter of the large end is consistent with the outer diameter of the ceramic rod 4, ensuring that the filament bundle passes through smoothly.

[0034] Let the length of the ceramic rod 4 be d1, the length of the small end of the support rod 1 be d2, the axial lengths of the rubber sleeve 2 in the untensioned and tensioned states be d3 and d4 respectively, and the small end length and large end thickness of the locking bolt 3 be d5 and d6 respectively. Then we have: d2+d3+d6≥d1, and d2+d4+d6≤d1, while d5>d3, and d5+d6≥d1-d2. In this embodiment, the locking bolt 3 is an internal hexagon bolt, which can extend its large end out of the ceramic rod 4 before installation for easy assembly. During the locking process, it will compress the rubber sleeve 2 axially. Due to the elasticity of the rubber sleeve 2, its radial dimension is forced to expand, thereby tightly filling and supporting the inner wall of the ceramic rod 4. In the locked state, the locking bolt 3 is stably connected to the support rod 1, and the large end of the locking bolt 3 is flush with or recessed into the ceramic rod 4, making the outer surface of the ceramic rod 4 flat and smooth, effectively reducing the risk of the filament bundle getting caught during operation.

[0035] In this embodiment, when the rubber sleeve 2 is not under tension, the mating gap between it and the ceramic rod 4 can be controlled to be around 0.1mm or even smaller, which effectively reduces the installation eccentricity of the ceramic rod, ensures the coaxiality and perpendicularity after installation, and helps to improve the on-site wire twisting accuracy and adjustment effect.

[0036] Preferably, the length of the rubber sleeve 2 in the untensioned state can be selected as 15-30mm to ensure that it can provide suitable tensioning friction. Meanwhile, the material of the rubber sleeve 2 is butyl rubber, which has balanced oil and acetone resistance. Of course, the length and material of the rubber sleeve 2 in the untensioned state can also be designed and selected according to the actual use environment to improve its applicability.

[0037] The working principle (i.e., installation process) of this embodiment is as follows:

[0038] 1. For example Figure 1 As shown, the ceramic rod 4 is fitted onto the small end of the support rod 1, and then the rubber sleeve 2 is placed inside the ceramic rod 4, with one end of it abutting against the small end of the support rod 1.

[0039] 2. Insert the Allen wrench into the operating hole at the large end of the locking bolt 3 and tighten the Allen wrench (rotate clockwise) to drive the locking bolt 3 to move axially into the interior of the ceramic rod 4.

[0040] 3. During the movement of the locking bolt 3, the rubber sleeve 2 is subjected to axial compression. Due to its elastic properties, its radial dimension (outer diameter) is forced to expand and increase, thereby tightly filling and supporting the inner wall of the ceramic rod 4 and the support rod 1, thus firmly fixing the ceramic rod 4. At this time, the gap between the ceramic rod 4 and the rubber sleeve 4 is extremely small, ensuring installation accuracy.

[0041] 4. When disassembling, simply loosen the locking bolt 3 in the opposite direction (counterclockwise). The rubber sleeve 2 will contract radially under the action of elastic restoring force, releasing the tension force on the inner wall of the ceramic rod 4, and the ceramic rod 4 can be quickly removed.

[0042] This invention abandons the traditional glue bonding method and uses the mechanical tension principle to fix the ceramic rod, which has the advantages of high installation accuracy, simple and quick operation, no glue required for assembly, and reduced spare parts requirements.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A rapid fixing structure for a ceramic rod in a spinning ceramic guide, comprising a ceramic rod (4); characterized in that: It also includes a support rod (1), a rubber sleeve (2), and a locking bolt (3); The support rod (1) is a stepped cylindrical structure. Its small end is provided with a threaded hole (11) that matches the small end of the locking bolt (3), and the central axis of the threaded hole (11) coincides with the axis of the support rod (1). The small end of the support rod (1) extends into the ceramic rod (4), and the large end is used to install on the base of the spinning ceramic guide. The rubber sleeve (2) is an elastic tensioning rubber sleeve. In the non-tensioned state, its inner diameter is matched with the outer diameter of the small end of the locking bolt (3), and the outer diameter is smaller than the inner diameter of the ceramic rod (4). The rubber sleeve (2) is coaxially arranged inside the ceramic rod (4). One end of it abuts against the end of the small end of the support rod (1), and the other end abuts against the large end of the locking bolt (3). The small end of the locking bolt (3) passes through the rubber sleeve (2) and extends into the threaded hole (11) to connect with the support rod (1). The outer diameter of the small end of the support rod (1) is adapted to the inner diameter of the ceramic rod (4), and the outer diameter is consistent with the outer diameter of the ceramic rod (4); the outer diameter of the large end of the locking bolt (3) is smaller than the inner diameter of the ceramic rod (4).

2. The rapid fixing structure for the ceramic rod of the spinning ceramic guide according to claim 1, characterized in that: Let the length of the ceramic rod (4) be d1, the length of the small end of the support rod (1) be d2, the axial lengths of the rubber sleeve (2) in the non-tightened and tightened states be d3 and d4 respectively, and the length of the small end and the thickness of the large end of the locking bolt (3) be d5 and d6 respectively; then we have: d2+d3+d6≥d1, and d2+d4+d6≤d1; d5>d3, and d5+d6≥d1-d2.

3. The rapid fixing structure for the ceramic rod of the spinning ceramic guide according to claim 1 or 2, characterized in that: When the rubber sleeve (2) is not under tension, the clearance between it and the ceramic rod (4) is ≤0.1mm.

4. The rapid fixing structure for the ceramic rod of the spinning ceramic guide according to claim 3, characterized in that: The length of the rubber sleeve (2) in the non-tightened state is 15-30 mm.

5. The rapid fixing structure for the ceramic rod of the spinning ceramic guide according to claim 4, characterized in that: The material of the rubber sleeve (2) is butyl rubber.

6. The rapid fixing structure for the ceramic rod of the spinning ceramic guide according to claim 1, characterized in that: The locking bolt (3) is an internal hex bolt.

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