Straightness adjusting device for core rod of optical fiber preform

Abstract

The utility model discloses a straightness adjusting device for a core rod of an optical fiber preform, which relates to the technical field of manufacturing of optical fiber equipment and comprises a workbench, a mounting rack arranged on the workbench, a support rotating wheel rotatably arranged on the mounting rack, a detection device arranged on the mounting rack, an adjusting device arranged on the detection device, and a control device arranged on the adjusting device. The adjusting device is used for adjusting the straightness of a core rod of the optical fiber preform and comprises a second telescopic rod arranged on the detection device, a fixing block is arranged at the bottom end of the second telescopic rod, a spring is arranged in a groove in the bottom of the fixing block, and a sliding block is connected to the bottom end of the spring and used for pushing the sliding block downwards to return to the original position. A lower pressing wheel is arranged at the bottom of the sliding block; and the detection device is used for detecting the straightness of the core rod of the optical fiber preform rod. And meanwhile, core rods with different diameters can be conveniently detected, the core rods are prevented from being damaged due to excessive adjustment, and the adjustment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber equipment manufacturing, in particular to an optical fiber preform core rod straightness adjustment device. Background Art

[0002] Straightness is the difference between the maximum and minimum radial values ​​measured by the indicator when the rod rotates around the reference axis without axial movement for one circle. Straightness is the difference between the maximum and minimum deviations of the actual straight line from the ideal straight line. In the field of optical fiber preforms, large straightness of the glass core rod will have a serious impact on the production quality of the optical fiber preform and optical fiber, so the core rod with large straightness needs to be precisely adjusted.

[0003] In the prior art, a utility model patent with announcement number CN208087495U provides an automatic straightness adjustment device for an optical fiber preform core rod, comprising a fixed base, a control cabinet, a heating device, a downward pressure device, and two supporting wheels arranged above the fixed base, wherein the adjacent sides of the two supporting wheels are used to support and place the core rod, and the two supporting wheels are rotated in the same direction by a drive motor; a microcontroller is configured inside the control cabinet, and the microcontroller controls the rotation of the drive motor through a drive circuit; the heating device is used to soften the core rod; and the downward pressure device is used to apply downward pressure to the core rod.

[0004] The optical fiber preform core rod straightness automatic adjustment device is not convenient for detecting core rods of different diameters. Misoperation of the pressing device may easily cause over-adjustment and damage the core rod, affecting the adjustment effect. Therefore, we propose an optical fiber preform core rod straightness adjustment device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a device for adjusting the straightness of an optical fiber preform core rod, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for adjusting the straightness of an optical fiber preform core rod, comprising a workbench, a mounting frame is provided on the workbench, a supporting wheel is rotatably provided on the mounting frame, a detection device is provided on the mounting frame, an adjustment device is provided on the detection device, the adjustment device is used to adjust the straightness of the optical fiber preform core rod, the adjustment device comprises a second telescopic rod provided on the detection device, a fixed block is provided at the bottom end of the second telescopic rod, a spring is provided in a groove at the bottom of the fixed block, a sliding block is connected to the bottom end of the spring to push the sliding block down to restore it to its original position, and a lower pressure wheel is provided at the bottom of the sliding block.

[0007] Preferably, the detection device is used to detect the straightness of the optical fiber preform core rod.

[0008] Preferably, the detection device includes a bracket arranged on a mounting frame, a telescopic rod 1 is provided at the top of the bracket, a connecting rod is connected to the bottom of the telescopic rod 1, and a laser instrument for detecting the straightness of the core rod of the optical fiber preform rod is connected to one end of the connecting rod.

[0009] Preferably, the top of the second telescopic rod is arranged at the top of the bracket, the second telescopic rod is used to push the fixed block to rise and fall, and a groove is provided at the bottom of the fixed block.

[0010] Preferably, the spring is arranged in a groove of the fixed block, the sliding block is a T-shaped structure, and the top of the sliding block is slidably connected in the groove of the fixed block.

[0011] Preferably, the bracket is an L-shaped structure, and the telescopic rod 1 is on one side of the telescopic rod 2.

[0012] Preferably, the connecting rod is used to connect the telescopic rod 1 and the laser instrument, the connecting rod is above the mounting frame, and the laser instrument is a conventional straightness detection laser instrument.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Drive telescopic rod 1. Extend the telescopic rod 1 and push the laser instrument to move with it through the connecting rod. The laser instrument rises and falls to adjust the distance between the laser instrument and the core rod. When the distance between the laser instrument and the core rod is suitable for detection, stop driving telescopic rod 1, start the laser instrument, and observe whether the laser instrument beam and the core rod are equidistant. When the straightness difference is large, the distance difference between the two will be too large or too small, making it easier to detect the straightness of the core rod and to detect core rods of different diameters.

[0015] 2. Drive the telescopic rod 2, which pushes the fixed block, spring, sliding block and lower pressure wheel downward. The lower pressure wheel presses down and the rollers on both sides adjust the area where the mandrel has a larger straightness. When the mandrel is fully in contact with the roller and cannot move further downward, the lower pressure wheel is restricted from moving further downward. At this time, if the telescopic rod 2 is misoperated, the spring will be compressed, which will restrict the lower pressure wheel from moving further downward and damaging the mandrel. This avoids damage to the mandrel due to excessive adjustment and improves the adjustment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a structural diagram of the regulating device in the utility model;

[0018] Figure 3 It is a structural diagram of the detection device in the utility model.

[0019] In the figure: 1. Workbench; 2. Mounting frame; 3. Support wheel; 4. Detection device; 41. Bracket; 42. Telescopic rod 1; 43. Connecting rod; 44. Laser instrument; 5. Adjustment device; 51. Telescopic rod 2; 52. Fixed block; 53. Spring; 54. Sliding block; 55. Lower pressure wheel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-3 , a device for adjusting the straightness of an optical fiber preform core rod, comprising a workbench 1, a mounting frame 2 is provided on the workbench 1, a supporting wheel 3 is rotatably provided on the mounting frame 2, a detecting device 4 is provided on the mounting frame 2, the detecting device 4 is used to detect the straightness of the optical fiber preform core rod, the detecting device 4 can be provided in two groups, which are symmetrically arranged on the two groups of mounting frames 2, the detecting device 4 comprises a bracket 41 provided on the mounting frame 2, a telescopic rod 1 42 is provided at the top of the bracket 41, a connecting rod 43 is connected to the bottom of the telescopic rod 1 42, the connecting rod 43 is based on the principle that the telescopic rod 1 42 is connected to one end of the telescopic rod 1 51, a laser instrument 44 for detecting the straightness of the optical fiber preform core rod, the bracket 41 is an L-shaped structure, the telescopic rod 1 42 is on one side of the telescopic rod 2 51, the connecting rod 43 is used to connect the telescopic rod 1 42 and the laser instrument 44, the connecting rod 43 is above the mounting frame 2, and the laser instrument 44 is a conventional straightness detection laser instrument.

[0022] Place the core rod between the two supporting wheels 3, start the drive motor, ignite the quartz blowtorch, and use the quartz blowtorch to micro-soften the core rod. The above is the existing technology. Drive the telescopic rod 42. The telescopic rod 42 extends and pushes the laser instrument 44 to follow the movement through the connecting rod 43. The laser instrument 44 is raised and lowered to adjust the distance from the core rod. When the distance between the laser instrument 44 and the core rod is suitable for detection, stop driving the telescopic rod 42, start the laser instrument 44, and observe whether the laser instrument 44 ray is equidistant from the core rod. When the straightness difference is large, the distance difference between the two will be too large or too small, which makes it easy to detect the straightness of the core rod and at the same time facilitate the detection of core rods with different diameters.

[0023] An adjusting device 5 is provided on the detection device 4, and the adjusting device 5 is used to adjust the straightness of the core rod of the optical fiber preform rod. The adjusting device 5 includes a telescopic rod 2 51 provided on the detection device 4, and a fixed block 52 is provided at the bottom end of the telescopic rod 2 51, and a spring 53 is provided in the groove at the bottom of the fixed block 52. The bottom end of the spring 53 is connected to a sliding block 54 for pushing the sliding block 54 down to restore it to its original position, and a lower pressure wheel 55 is provided at the bottom of the sliding block 54. The top of the telescopic rod 2 51 is provided at the top of the bracket 41, and the telescopic rod 2 51 is used to push the fixed block 52 up and down, and a groove is provided at the bottom of the fixed block 52. The spring 53 is provided in the groove of the fixed block 52, and the sliding block 54 is a T-shaped structure. The top of the sliding block 54 is slidably connected to the groove of the fixed block 52.

[0024] Drive the telescopic rod 2 51, the telescopic rod 2 51 pushes the fixed block 52, the spring 53, the sliding block 54 and the lower pressure wheel 55 to move downward, and the lower pressure wheel 55 presses down and adjusts the area where the mandrel straightness is larger with the rollers 21 on both sides. Since the mandrel is fully in contact with the rollers 21 and cannot move further downward, the lower pressure wheel 55 is restricted from moving further downward. At this time, if the telescopic rod 2 51 is misoperated, the spring 53 will be compressed, restricting the lower pressure wheel 55 from continuing to move downward and damaging the mandrel, thereby avoiding excessive adjustment and damaging the mandrel, thereby improving the adjustment effect.

[0025] Working principle: The utility model places the core rod between the two supporting wheels 3, starts the driving motor, ignites the quartz blowtorch, and uses the quartz blowtorch to micro-soften the core rod. The above is the existing technology. The telescopic rod 42 is driven. The telescopic rod 42 is extended and pushes the laser instrument 44 to follow the movement through the connecting rod 43. The laser instrument 44 is raised and lowered to adjust the distance from the core rod. When the distance between the laser instrument 44 and the core rod is suitable for detection, the telescopic rod 42 is stopped, and the laser instrument 44 is started to observe whether the laser instrument 44 ray and the core rod are equidistant. When the straightness difference is large, the distance difference between the two will be too large or too small. This makes it easy to detect the straightness of the core rod and to detect core rods of different diameters. The telescopic rod 51 is driven. The telescopic rod 51 pushes the fixed block 52, the spring 53, the sliding block 54 and the lower pressure wheel 55 to move downward. The lower pressure wheel 55 presses down and adjusts the area where the straightness of the core rod is larger with the rollers 21 on both sides. The core rod is fully in contact with the roller 21 and cannot move downward further, so the lower pressure wheel 55 is restricted from moving downward. At this time, if the telescopic rod 51 is misoperated, the spring 53 will be compressed, which restricts the lower pressure wheel 55 from continuing to move downward and damaging the core rod, thereby avoiding excessive adjustment and damaging the core rod, thereby improving the adjustment effect.

[0026] The mounting frame 2, the supporting wheel 3 and the quartz lamp provided below the core rod are prior art and will not be described in detail here.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical fiber preform core rod straightness adjustment device, comprising a workbench (1), a mounting frame (2) provided on the workbench (1), a supporting wheel (3) rotatably provided on the mounting frame (2), characterized in that: The mounting frame (2) is provided with a detection device (4), and the detection device (4) is provided with an adjustment device (5). The adjustment device (5) is used to adjust the straightness of the optical fiber preform core rod. The adjustment device (5) comprises a second telescopic rod (51) provided on the detection device (4), a fixed block (52) is provided at the bottom end of the second telescopic rod (51), a spring (53) is provided in a groove at the bottom of the fixed block (52), and a sliding block (54) is connected to the bottom end of the spring (53) for pushing the sliding block (54) downward to restore it to its original position. A lower pressure wheel (55) is provided at the bottom of the sliding block (54).

2. The optical fiber preform core rod straightness adjustment device according to claim 1, characterized in that: The detection device (4) is used to detect the straightness of the optical fiber preform core rod.

3. The optical fiber preform core rod straightness adjustment device according to claim 2, characterized in that: The detection device (4) comprises a bracket (41) arranged on a mounting frame (2), a telescopic rod (42) is provided at the top of the bracket (41), a connecting rod (43) is connected to the bottom of the telescopic rod (42), and a laser instrument (44) for detecting the straightness of the core rod of the optical fiber preform rod is connected to one end of the connecting rod (43) and the telescopic rod (42).

4. The optical fiber preform core rod straightness adjustment device according to claim 1, characterized in that: The top of the second telescopic rod (51) is arranged at the top of the bracket (41). The second telescopic rod (51) is used to push the fixed block (52) to move up and down. The bottom of the fixed block (52) is provided with a groove.

5. The optical fiber preform core rod straightness adjustment device according to claim 1, characterized in that: The spring (53) is arranged in the groove of the fixed block (52); the sliding block (54) is a T-shaped structure; the top of the sliding block (54) is slidably connected in the groove of the fixed block (52).

6. The optical fiber preform core rod straightness adjustment device according to claim 3, characterized in that: The bracket (41) is an L-shaped structure, and the telescopic rod (42) is on one side of the telescopic rod (51).

7. The optical fiber preform core rod straightness adjustment device according to claim 3, characterized in that: The connecting rod (43) is used to connect the telescopic rod (42) and the laser instrument (44). The connecting rod (43) is above the mounting frame (2). The laser instrument (44) is a conventional straightness detection laser instrument.

Images