Variable speed pair of rollers quartz rod rolling device

Abstract

The utility model relates to a variable speed pair of rollers quartz rod roll feeding device for solving the problem of shaking or bending in the process of quartz rod feeding. Including roll feeding pair of rollers, roll feeding pair of rollers have multiple pairs, including driving roller and driven roller that are arranged in parallel in first plane, multiple pairs of roll feeding pair of rollers are arranged along first straight line interval, first plane is perpendicular to first straight line, driving roller rotates through drive arrangement, the roll feeding gap between driving roller and driven roller is used for inserting multiple quartz rods and provides the elastic clamping force along the radial for quartz rod, so that quartz rod moves from upstream to downstream along first straight line, and sequentially passes the roll feeding gap of each pair of roll feeding pair of rollers in the moving process, the rotating speed of driving roller of each pair of roll feeding pair of rollers increases gradually from upstream to downstream on first straight line, so that the quartz rod between any adjacent roll feeding pair of rollers is in straightened state.

Description

Technical Field

[0001] This utility model relates to a variable speed double roller quartz rod conveying device. Background Technology

[0002] In the production of quartz glass fiber using the rod drawing method, quartz glass rods with a diameter of approximately 1.8 to 4 millimeters are heated and melted. Fibers are drawn from the molten point and bundled together. After being coated with a sizing agent by a bundling wheel, the bundles are continuously drawn by a high-speed rotating drawing machine and wound onto a winding mechanism by a wire guide wheel, becoming continuous quartz glass fiber filaments. To improve efficiency, 100 or more quartz fibers need to be drawn at a time, and the length of the quartz rod should be as long as possible (generally 1.4-1.8 meters) to reduce the number of times the quartz rod needs to be clamped. This is because after the quartz rod is melted and drawn, a new quartz rod needs to be manually loaded again. The longer the quartz rod, the fewer the clamping frequency, and the higher the drawing efficiency. However, because the diameter of the quartz rod is very thin, the longer the quartz rod is, the more easily it will wobble or bend. During the drawing process, the wobble or bend of the quartz rod will cause the position of its lower end as it passes through the molten flame area to change. Since the temperature of different areas of the flame is different, the change in the position of the quartz rod in the flame will lead to substandard melting and affect the quality of the filament.

[0003] While existing technologies employ multi-level positioning plates to limit the movement of the quartz rod using positioning holes on these plates, the effectiveness of this solution is limited for the following reasons: First, the number of positioning plates is finite, and there is spacing between them. A section of the quartz rod positioned between the plates remains in a state of no limit, inevitably leading to wobbling or bending, causing changes in the position of the lower end of the quartz rod. Second, to facilitate the insertion and smooth movement of the quartz rod within the positioning holes, the diameter of the positioning holes is larger than the diameter of the quartz rod. This makes precise positioning of the quartz rod impossible, and even slight wobbling of the lower end of the quartz rod will affect the melting quality.

[0004] Therefore, in the production of quartz fibers by the rod drawing method, if we want to improve the drawing efficiency and increase the length of the quartz rod as much as possible to reduce the frequency of quartz rod clamping, we must first solve the problem of quartz rod shaking or bending. Utility Model Content

[0005] The purpose of this invention is to provide a variable speed double roller quartz rod feeding device to solve the technical problem of swaying or bending during the feeding process of quartz rods.

[0006] The technical solution of this utility model is as follows: A variable speed roller quartz rod conveying device includes: multiple pairs of conveying rollers, including a driving roller and a driven roller arranged in parallel in a first plane. The multiple pairs of conveying rollers are spaced apart along a first straight line. The first plane is perpendicular to the first straight line. The driving roller is driven to rotate by a driving device. The conveying gap between the driving roller and the driven roller is used to insert multiple quartz rods and provide the quartz rods with an elastic clamping force in the radial direction, so that the quartz rods move from upstream to downstream along the first straight line and pass through the conveying gap of each pair of conveying rollers in sequence during the movement. From upstream to downstream on the first straight line, the rotation speed of the driving roller of each pair of conveying rollers increases sequentially, so that the quartz rods between any adjacent pairs of conveying rollers are in a straightened state.

[0007] Based on the above scheme, the following further improvements are made: Along the first straight line from upstream to downstream, the elastic clamping force of the rolling gap between the driving and driven rollers of each pair of conveying rollers increases progressively to ensure that the quartz rod moves from upstream to downstream at all times. Due to the increasing elastic clamping force, the quartz rod is preferentially pulled downstream by the downstream conveying rollers, rather than moving in the opposite direction, thus ensuring the stable downstream movement of the quartz rod, ensuring the quality of subsequent melting and wire drawing, and avoiding wire breakage.

[0008] Based on the above scheme, the following further improvement is made: at least one pair of driving and driven rollers in each pair of conveying rollers are driven by gear meshing at one end. The gear meshing of the driving and driven rollers ensures the synchronization of their rotation, minimizes sliding friction between the quartz rod and the roller surface, and extends the service life of both the driving and driven rollers.

[0009] Based on the above scheme, the following further improvement is made: the outer surface of at least one pair of driving and / or driven rollers in each pair of rollers is an elastic surface.

[0010] Based on the above solution, the following improvement is made: elastic sleeves are detachably connected to the exterior of both the driving and driven rollers. The elastic sleeves not only meet the elastic clamping force requirements of the rolling gap but also facilitate replacement. Since the elastic sleeves directly contact and rub against the quartz rod, they are prone to wear over time. Therefore, this improvement allows for easy replacement while ensuring that the roller body itself is not worn, avoiding the high cost associated with replacing the entire roller.

[0011] Based on the above scheme, the following further improvement is made: at least one pair of driving and / or driven rollers in each of the rolling pairs are provided with annular grooves corresponding to the quartz rods on their outer surfaces. The annular grooves provide one-to-one positioning of the quartz rods, preventing displacement along the rolling gap.

[0012] Based on the above solution, the following further improvement is made: the cross-section of the annular groove is V-shaped. The V-shape can accommodate quartz rods of different diameters or diameter errors, thereby ensuring the positioning accuracy of the quartz rods.

[0013] Based on the above scheme, the following further modifications are made: the first plane is a horizontal plane, and the first straight line is a vertical straight line.

[0014] Based on the above scheme, the following improvements are made: each pair of rollers is provided with a positioning mechanism for positioning the quartz rod upstream and downstream; a melting burner is provided downstream of the positioning mechanism of each pair of rollers; the melting burner is provided with a flame nozzle that corresponds to each quartz rod; and the flame from the flame nozzle is vertically sprayed onto the corresponding quartz rod.

[0015] Based on the above scheme, the following further improvement is made: a frame is included, on which two sets of the aforementioned feeding rollers are symmetrically arranged along a first plane. Each set of feeding rollers includes multiple pairs of feeding rollers along a first straight line. This arrangement allows two rows of quartz rods to be fed at a time, thereby improving the efficiency of feeding and drawing.

[0016] The beneficial effects of this technical solution are as follows: When a variable speed roller quartz rod feeding device is in use, multiple quartz rods are arranged side by side from upstream to downstream along a first straight line and sequentially inserted into the feeding gaps of each feeding roller. Due to the elastic clamping force of the feeding gap, as the drive roller rotates, each quartz rod is driven to move downstream. Since the rotation speed of each feeding roller increases from upstream to downstream, the quartz rod is always in a stretched and taut state in the area between each feeding roller, thereby avoiding bending or shaking of the quartz rod and improving the stability of subsequent melting of the quartz rod. Compared with the prior art, since the quartz rod is not easy to shake, a longer quartz rod can be selected under the same diameter without worrying about shaking or bending, thereby improving the drawing efficiency. Attached Figure Description

[0017] Figure 1 This is a front view structural schematic diagram of a specific embodiment of a variable speed double roller quartz rod conveying device of the present invention.

[0018] Figure 2 for Figure 1 Side view structural schematic diagram;

[0019] In the diagram: 1-frame, 21-23-first to third conveying rollers, 31-drive roller, 32-driven roller, 33-elastic sleeve, 4-quartz rod, 5-drive device, 6-gear, 7-coupling, 8-bearing. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0024] A specific embodiment of the variable speed double roller quartz rod conveying device of this utility model is as follows: Figure 1-2As shown, the variable speed roller quartz rod feeding device in this embodiment is a rod feeding mechanism for drawing quartz fibers from quartz rods 4 by melting and drawing. Its main function is to ensure the stable and high-precision feeding of multiple quartz rods 4, so that the quartz rods 4 can stably pass through the appropriate position of the melting burner, so that they can be melted into quartz fibers. Specifically, the variable-speed roller conveying device for quartz rods 4 includes multiple pairs of conveying rollers. In this embodiment, three pairs are provided, namely the first to third conveying roller pairs 21-23. Each pair of conveying rollers includes a driving roller 31 and a driven roller 32 arranged in parallel in a first plane. The multiple pairs of conveying rollers are spaced apart along a first straight line. The first plane is perpendicular to the first straight line. The driving roller 31 is driven to rotate by the driving device 5. The conveying gap between the driving roller 31 and the driven roller 32 is used to insert multiple quartz rods 4 and provide the quartz rods 4 with an elastic clamping force in the radial direction, so that the quartz rods 4 move from upstream to downstream along the first straight line. During the movement, they pass through the conveying gaps of each pair of conveying rollers in sequence. From upstream to downstream on the first straight line, the rotational speed of the driving roller 31 of each pair of conveying rollers increases sequentially, so that the quartz rods 4 between any adjacent conveying rollers are in a straightened state. In this embodiment, the driving roller 31 and the driven roller 32 are in contact. The rotational speeds of the three pairs of conveying rollers are set to, for example, 90, 91, and 92 respectively. That is, the speed increase of each pair of conveying rollers is relatively small. As long as there is a speed difference to achieve the straightening of the quartz rod, it is not necessary to have too large a difference, which would lead to excessive sliding friction of the quartz rod.

[0025] In this embodiment, along the first straight line from upstream to downstream, the elastic clamping force of the rolling gap between the driving roller 31 and the driven roller 32 of each pair of rolling rollers increases progressively to ensure that the quartz rod 4 moves from upstream to downstream at all times. Due to the increase in elastic clamping force, the quartz rod 4 is preferentially pulled downstream by the downstream rolling rollers rather than moving in the opposite direction, thereby ensuring the stable downstream movement of the quartz rod 4, ensuring the quality of subsequent melting and drawing, and avoiding wire breakage.

[0026] At least one end of the driving roller 31 and driven roller 32 of each pair of conveying rollers is driven by gear 6. In this embodiment, the driving roller 31 and driven roller 32 of all three pairs of conveying rollers are driven by gear 6, and the drive device 5 is connected to the gear 6 on the driving roller 31 through a coupling 7, driving the driving roller 31 and its gear 6 to rotate. The transmission of the driving roller 31 and driven roller 32 by gear 6 can ensure the synchronization of their rotation, minimize the sliding friction between the quartz rod 4 and the roller surface, and extend the service life of the driving roller 31 and driven roller 32.

[0027] At least one pair of driving rollers 31 and / or driven rollers 32 in each pair of conveying rollers have elastic outer surfaces. In this embodiment, the driving rollers 31 and driven rollers 32 are detachably connected to the outside of elastic sleeves 33. The elastic sleeves 33 not only meet the elastic clamping force requirements of the conveying gap but also facilitate replacement. Because the elastic sleeves 33 directly contact and rub against the quartz rods 4, they are prone to wear over time. Therefore, this improvement facilitates replacement and ensures that the roller body itself is not worn, avoiding the high cost of replacing the entire roller. At least one pair of driving rollers 31 and / or driven rollers 32 in each pair of conveying rollers have annular grooves corresponding to the quartz rods 4 on their outer surfaces. The annular grooves provide one-to-one positioning of the quartz rods 4, preventing displacement of the quartz rods 4 along the conveying gap. The cross-section of the annular grooves is V-shaped. The V-shape can accommodate quartz rods 4 with different diameter specifications or diameter errors, thereby ensuring the positioning accuracy of the quartz rods 4.

[0028] In this embodiment, the first plane is a horizontal plane, and the first straight line is a vertical line. In other embodiments, the first plane may also be a vertical plane. The driving and driven rollers of each pair of conveying rollers are rotatably mounted on the frame via bearings. Both the driving and driven rollers are long cylindrical structures, and the driving device is a motor.

[0029] In this embodiment, each pair of conveying rollers has a positioning mechanism upstream and downstream for positioning the quartz rods 4. Downstream of the positioning mechanism of each pair of conveying rollers is a melting burner, which has a flame nozzle corresponding to each quartz rod 4. The flame from the flame nozzle is vertically sprayed onto the corresponding quartz rod 4. The machine includes a frame 1. In other embodiments, two sets of the aforementioned conveying rollers are symmetrically arranged along a first plane on the frame. Each set of conveying rollers includes multiple pairs of conveying rollers along a first straight line. This arrangement allows two rows of quartz rods to be conveyed at a time, thereby improving the efficiency of conveying and drawing.

[0030] In use, multiple quartz rods 4 are inserted side by side from upstream to downstream along a first straight line into the rolling gaps of each pair of rollers. Due to the elastic clamping force of the rolling gaps, as the drive roller 31 rotates, each quartz rod 4 is driven to move downstream. Since the rotation speed of each pair of rollers increases from upstream to downstream, the quartz rods 4 are always in a stretched and taut state in the area between each pair of rollers, thereby preventing the quartz rods 4 from bending or shaking, and thus improving the stability of the subsequent melting of the quartz rods 4. Compared with the prior art, since the quartz rods 4 are not easy to shake, longer quartz rods 4 can be selected for the same diameter without worrying about shaking or bending, thereby improving the drawing efficiency.

[0031] 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 variable-speed double-roller quartz rod conveying device, characterized in that, include: The conveying rollers consist of multiple pairs, including a driving roller and a driven roller arranged in parallel in a first plane. The multiple pairs of conveying rollers are spaced apart along a first straight line. The first plane is perpendicular to the first straight line. The driving roller is driven to rotate by a driving device. The conveying gap between the driving roller and the driven roller is used to insert multiple quartz rods and provide the quartz rods with an elastic clamping force in the radial direction, so that the quartz rods move from upstream to downstream along the first straight line and pass through the conveying gap of each pair of conveying rollers in sequence during the movement. From upstream to downstream on the first straight line, the rotational speed of the driving roller of each pair of conveying rollers increases sequentially, so that the quartz rods between any adjacent pairs of conveying rollers are in a straightened state.

2. The variable speed double-roller quartz rod conveying device according to claim 1, characterized in that, Along the first straight line from upstream to downstream, the elastic clamping force of the rolling gap between the driving and driven rollers of each pair of rolling rollers increases progressively to ensure that the quartz rod moves from upstream to downstream at all times.

3. A variable-speed double-roller quartz rod conveying device according to claim 1 or 2, characterized in that, At least one pair of driving and driven rollers in each pair of conveying rollers are driven by gear meshing at one end.

4. A variable-speed double-roller quartz rod conveying device according to claim 1 or 2, characterized in that, The outer surfaces of at least one pair of driving and / or driven rollers in each pair of conveying rollers are elastic surfaces.

5. A variable-speed double-roller quartz rod conveying device according to claim 4, characterized in that, The driving roller and the driven roller are detachably connected to the outside with elastic sleeves.

6. A variable-speed double-roller quartz rod conveying device according to claim 1 or 2, characterized in that, At least one pair of driving and / or driven rollers in each of the conveying roller pairs have annular grooves on their outer surfaces that correspond one-to-one with the quartz rod.

7. A variable-speed double-roller quartz rod conveying device according to claim 6, characterized in that, The cross-section of the annular groove is V-shaped.

8. A variable-speed double-roller quartz rod conveying device according to claim 1 or 2, characterized in that, The first plane is a horizontal plane, and the first straight line is a vertical straight line.

9. A variable-speed double-roller quartz rod conveying device according to claim 1 or 2, characterized in that, Each pair of rollers has a positioning mechanism for positioning the quartz rod upstream and downstream. Downstream of the positioning mechanism of each pair of rollers, there is a melting burner. The melting burner has a flame nozzle that corresponds to each quartz rod. The flame from the flame nozzle is vertically sprayed onto the corresponding quartz rod.

10. A variable-speed double-roller quartz rod conveying device according to claim 1 or 2, characterized in that, It includes a frame, on which two sets of the aforementioned roller pairs are symmetrically arranged along a first plane, each set of roller pairs including multiple pairs of roller pairs along a first straight line.

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