High-precision positioning and rod feeding mechanism for quartz fiber production

Abstract

This utility model relates to a high-precision positioning and feeding mechanism for quartz fiber production. The positioning rollers include a positioning rigid roller and a pressing roller arranged parallel to each other on their axes. A gap is formed between the positioning rigid roller and the pressing roller for the quartz rods to pass through. The positioning rigid roller is made of a rigid material and has multiple first positioning ring grooves spaced apart on it to serve as positioning references for the corresponding quartz rods. A first elastic layer is provided on the outer circumferential surface of the pressing roller, through which each quartz rod is pressed into its corresponding first positioning ring groove. The feeding roller is located downstream of the positioning rollers and includes a driving roller and a driven roller arranged parallel to each other on their axes. The driving roller is driven by a drive mechanism, which in turn drives the driven roller to rotate synchronously through a transmission mechanism. The driven roller is made of a rigid material and has multiple second positioning ring grooves spaced apart on it. A second elastic layer is provided on the outer circumferential surface of the driving roller, through which each quartz rod is pressed into its corresponding second positioning ring groove.

Description

Technical Field

[0001] This utility model relates to the technical field of quartz fiber drawing equipment, specifically to a high-precision positioning and feeding mechanism for quartz fiber production. Background Technology

[0002] In the production of quartz glass fiber by rod drawing, quartz glass rods with a diameter of about 1.8 to 4 mm are heated and melted. In order to improve the drawing efficiency, 50 to 100 quartz rods need to be drawn at a time. Each quartz rod needs to move synchronously and pass precisely through the corresponding flame nozzle of the melting burner. After being heated, the quartz rods are melted and drawn into quartz fibers.

[0003] In existing technologies, the quartz rods are typically positioned by creating corresponding positioning holes on a flat plate. One end of the quartz rod is then clamped by a clamping assembly, and a linear drive mechanism moves the clamping assembly. However, this method results in relatively large positioning holes to facilitate the smooth insertion of the quartz rods, making precise positioning impossible. During movement, the quartz rods may wobble or bend, preventing them from accurately passing through the designated flame area and thus affecting the melting effect. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision positioning and feeding mechanism for quartz fiber production. By using a high-rigidity positioning reference on one side and elastic extrusion on the other side, the quartz rod is made to abut against the high-rigidity positioning reference, thereby achieving precise positioning of the quartz rod and ensuring the quality of quartz rod melting and drawing.

[0005] The technical solution of the high-precision positioning and feeding mechanism for quartz fiber production of this utility model is as follows: The high-precision positioning and feeding mechanism for quartz fiber production includes: frame; The positioning rollers include a positioning rigid roller and a pressing roller arranged parallel to each other on the axis. The positioning rigid roller and the pressing roller are rotatably mounted on the frame. A gap is formed between the positioning rigid roller and the pressing roller for the quartz rod to pass through. The positioning rigid roller is made of rigid material. Multiple first positioning ring grooves are provided on the positioning rigid roller at intervals to serve as positioning references for the corresponding quartz rods. A first elastic layer is provided on the outer circumferential surface of the pressing roller. The first elastic layer presses each quartz rod into the corresponding first positioning ring groove. The bar feeding rollers, located downstream of the positioning rollers, include a driving roller and a driven roller arranged parallel to each other on the axis. The driving roller and the driven roller are rotatably mounted on the frame. The driving roller is driven by a drive mechanism, and the driving roller drives the driven roller to rotate synchronously through a transmission mechanism. A gap is formed between the driving roller and the driven roller for the quartz rod to pass through. The driven roller is made of rigid material and has multiple second positioning ring grooves spaced apart on it to serve as positioning references for the corresponding quartz rods. A second elastic layer is provided on the outer circumference of the driving roller, and the second elastic layer presses each quartz rod into the corresponding second positioning ring groove.

[0006] The beneficial effects of this technical solution are as follows: In use, the quartz rod first passes through the positioning rollers and then through the feeding rollers. The feeding rollers provide the driving force for the quartz rod to move downstream. That is, the driving roller is driven to rotate by the driving mechanism, and the driven roller rotates synchronously with the driving roller. Due to the elastic compression of the second elastic layer of the driving roller, friction is formed between the quartz rod and the driving roller, thereby driving the quartz rod to move downward as a whole. When positioning the quartz rod, the positioning rollers and the feeding rollers position the quartz rod from the upper and lower ends of the quartz rod, respectively. On the one hand, the first and second positioning rollers, made of rigid materials, are used to position the quartz rod. The annular groove serves as the positioning reference for the quartz rod. Then, the elastic force of the first and second elastic layers is used to press the quartz rod into the corresponding positioning annular groove. This combination of rigidity and flexibility not only provides a more accurate positioning reference, but also allows the elastic layers to press the quartz rod into a state of close contact with the positioning reference, especially keeping the quartz rod straight. In contrast, existing technologies either use rigid positioning holes, which lack precise positioning, or two flexible pressing rollers, which lack a fixed positioning reference and make the quartz rod prone to bending. Neither of these methods can achieve the effect of accurately positioning the quartz rod and ensuring that the quartz rod remains straight.

[0007] Based on the above scheme, further improvements are made as follows: the elastic deformation of the second elastic layer is smaller than that of the first elastic layer. This arrangement is beneficial because, firstly, the melting burner is located downstream of the feeding rollers, and the precise positioning of the quartz rod by the feeding rollers has a greater impact on the melting effect. Therefore, a smaller elastic deformation of the second elastic layer corresponding to the feeding rollers helps to press the quartz rod onto the positioning reference with higher precision. Secondly, since the quartz rod is loaded between the positioning rollers from upstream, a larger elastic deformation of the first elastic layer makes the insertion of the quartz rod easier, thereby improving the loading efficiency.

[0008] Based on the above scheme, further improvements are made as follows: there are multiple sets of positioning rollers, and the elastic extrusion pressure of the first elastic layer on each set of positioning rollers increases from upstream to downstream.

[0009] Based on the above scheme, the following improvements are made: from upstream to downstream, the thickness of the first elastic layer on each set of positioning rollers increases.

[0010] Based on the above scheme, further improvements are made as follows: the first positioning ring groove and / or the second positioning ring groove are V-shaped ring grooves. This provides more precise positioning accuracy and can be adapted to high-precision positioning of quartz rods of different diameters.

[0011] Based on the above scheme, the following improvements are made: the surfaces of the first positioning ring groove and / or the second positioning ring groove are nitrided to improve the surface hardness and wear resistance of the positioning ring groove.

[0012] Based on the above scheme, the following improvements are made: the material of the first elastic layer and / or the second elastic layer is rubber. Attached Figure Description

[0013] Figure 1 This is a top view of Embodiment 1 of a high-precision positioning and feeding mechanism for quartz fiber production according to the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a side sectional view of a high-precision positioning and feeding mechanism for quartz fiber production according to this utility model. In the figure: 1-frame, 2-positioning rollers, 21-positioning rigid rollers, 211-first positioning ring groove, 22-extrusion rollers, 221-first elastic layer, 23-bearing, 3-feeding rollers, 31-drive rollers, 311-second positioning ring groove, 32-driven rollers, 321-second elastic layer, 33-drive mechanism, 4-quartz rod. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0018] An embodiment of the high-precision positioning and feeding mechanism for quartz fiber production according to this utility model is as follows: Figure 1-3 As shown, the high-precision positioning and feeding mechanism for quartz fiber production includes a frame 1 with a rectangular frame structure, two-stage positioning rollers 2 arranged from top to bottom, and a first-stage feeding roller 3. A melting burner is arranged below the feeding roller 3. The specific structure of the melting burner is not shown in the figure.

[0019] The positioning roller 2 includes a positioning rigid roller 21 and a pressing roller 22 arranged parallel to each other on the axis. The positioning rigid roller 21 and the pressing roller 22 are respectively rotatably mounted on the frame 1. A gap is formed between the positioning rigid roller 21 and the pressing roller 22 for the quartz rod 4 to pass through. The positioning rigid roller 21 is made of rigid material. Multiple first positioning ring grooves 211 are arranged at intervals on the positioning rigid roller 21. In this embodiment, there are 50 first positioning ring grooves 211 with a V-shaped cross-section, which serve as the positioning reference for the corresponding quartz rod 4. A first elastic layer 221 made of rubber is provided on the outer peripheral surface of the pressing roller 22. The first elastic layer 221 presses each quartz rod 4 into the corresponding first positioning ring groove 211.

[0020] The feeding roller 3 is located downstream of the positioning roller 2 and includes a driving roller 31 and a driven roller 32 arranged parallel to each other. The driving roller 31 and the driven roller 32 are rotatably mounted on the frame 1. The driving roller 31 is driven by the driving mechanism 33 and drives the driven roller 32 to rotate synchronously through the transmission mechanism. A gap is formed between the driving roller 31 and the driven roller 32 for the quartz rod 4 to pass through. The driven roller 32 is made of rigid material and has 50 second positioning ring grooves 311 spaced apart to serve as positioning references for the corresponding quartz rod 4. A second elastic layer 321 is provided on the outer circumferential surface of the driving roller 31. The second elastic layer 321 presses each quartz rod 4 into the corresponding second positioning ring groove 311.

[0021] The elastic deformation of the second elastic layer 321 is smaller than that of the first elastic layer 221. This arrangement is because, firstly, the melting burner is located downstream of the feeding roller 3, and the precise positioning of the quartz rod 4 by the feeding roller 3 has a greater impact on the melting effect. Therefore, a smaller elastic deformation of the second elastic layer 321 corresponding to the feeding roller 3 helps to press the quartz rod 4 onto the positioning reference with higher precision. Secondly, since the quartz rod 4 needs to be installed between the positioning rollers 2 from upstream, a larger elastic deformation of the first elastic layer 221 makes the insertion of the quartz rod 4 easier, thereby improving the rod loading efficiency.

[0022] In this embodiment, there are two sets of positioning rollers 2. From upstream to downstream, the elastic compressive force of the first elastic layer 221 on each set of positioning rollers 2 increases. From upstream to downstream, the thickness of the first elastic layer 221 on each set of positioning rollers 2 also increases. The first positioning ring groove 211 and / or the second positioning ring groove 311 are V-shaped ring grooves. This provides more precise positioning accuracy and can accommodate high-precision positioning of quartz rods 4 of different diameters. The surfaces of the first positioning ring groove 211 and / or the second positioning ring groove 311 are nitrided to improve the surface hardness and wear resistance of the positioning ring grooves. The material of the first elastic layer 221 and / or the second elastic layer 321 is rubber.

[0023] In use, the quartz rod 4 first passes through the positioning roller 2, and then through the feeding roller 3. The feeding roller 3 provides the driving force for the quartz rod 4 to move downstream. That is, the driving roller 31 is driven to rotate by the driving mechanism 33, and the driven roller 32 rotates synchronously with the driving roller 31. Due to the elastic compression of the second elastic layer 321 of the driving roller 31, friction is formed between the quartz rod 4 and the driving roller 31, thereby driving the quartz rod 4 downward as a whole. When positioning the quartz rod 4, the positioning roller 2 and the feeding roller 3 position the quartz rod 4 from the upper and lower ends of the quartz rod 4, respectively. On the one hand, the first and second positioning rollers, which are made of rigid materials, are used to position the quartz rod 4. The positioning groove 311 serves as the positioning reference for the quartz rod 4. Then, the elastic force of the first and second elastic layers 321 is used to press the quartz rod 4 into the corresponding positioning groove. This combination of rigidity and flexibility not only provides a more accurate positioning reference, but also allows the elastic layers to press the quartz rod 4 into a state that is in close contact with the positioning reference, especially keeping the quartz rod 4 straight. In contrast, existing technologies either use rigid positioning holes that lack precise positioning, or two flexible pressing rollers 22 that lack a fixed positioning reference, making the quartz rod 4 prone to bending. Neither of these methods can achieve the effect of accurately positioning the quartz rod 4 and ensuring that the quartz rod 4 remains straight.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A high-precision positioning rod feeding mechanism for quartz fiber production, comprising: frame; Its characteristic is that it further includes: The positioning rollers include a positioning rigid roller and a pressing roller arranged parallel to each other on the axis. The positioning rigid roller and the pressing roller are rotatably mounted on the frame. A gap is formed between the positioning rigid roller and the pressing roller for the quartz rod to pass through. The positioning rigid roller is made of rigid material. Multiple first positioning ring grooves are provided on the positioning rigid roller at intervals to serve as positioning references for the corresponding quartz rods. A first elastic layer is provided on the outer circumferential surface of the pressing roller. The first elastic layer presses each quartz rod into the corresponding first positioning ring groove. The bar feeding rollers, located downstream of the positioning rollers, include a driving roller and a driven roller arranged parallel to each other on the axis. The driving roller and the driven roller are rotatably mounted on the frame. The driving roller is driven by a drive mechanism, and the driving roller drives the driven roller to rotate synchronously through a transmission mechanism. A gap is formed between the driving roller and the driven roller for the quartz rod to pass through. The driven roller is made of rigid material and has multiple second positioning ring grooves spaced apart on it to serve as positioning references for the corresponding quartz rods. A second elastic layer is provided on the outer circumference of the driving roller, and the second elastic layer presses each quartz rod into the corresponding second positioning ring groove.

2. The high-precision positioning rod feeding mechanism for quartz fiber production according to claim 1, characterized in that, The elastic deformation of the second elastic layer is smaller than that of the first elastic layer.

3. The high-precision positioning rod feeding mechanism for quartz fiber production according to claim 1, characterized in that, There are multiple sets of positioning rollers, and the elastic extrusion pressure of the first elastic layer on each set of positioning rollers increases from upstream to downstream.

4. The high-precision positioning rod feeding mechanism for quartz fiber production according to claim 3, characterized in that, The thickness of the first elastic layer on each group of positioning rollers increases progressively.

5. The high-precision positioning rod feeding mechanism for quartz fiber production according to claim 1, characterized in that, The first positioning annular groove and / or the second positioning annular groove are annular grooves with a V-shaped cross-section.

6. The high-precision positioning rod feeding mechanism for quartz fiber production according to claim 1, characterized in that, The surfaces of the first positioning ring groove and / or the second positioning ring groove are nitrided.

7. The high-precision positioning rod feeding mechanism for quartz fiber production according to claim 1, characterized in that, The first elastic layer and / or the second elastic layer are made of rubber.

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