Correcting device for quartz core rod and high-purity quartz sleeve

Abstract

The utility model discloses a correcting device for a quartz core rod and a high-purity quartz sleeve. The correcting device comprises a clamp, a supporting plate, a quick-mounting bracket, a correcting rocker arm, a reset spring barrel and a quick-mounting adapter, the clamp is clamped on the oxyhydrogen flame lathe; the supporting plate is arranged on the clamp; the quick mounting bracket is arranged on the supporting plate; the correction rocker arm is movably connected with the quick mounting bracket, and by taking a connecting point as a boundary, a shorter section is a correction section, and a longer end is a rocker arm section; the correction rocker arm can rotate along the connection point; the reset spring barrel is arranged at the front end of the correction section of the correction rocker arm; the fast-assembly adapter is connected with the reset spring barrel and is in an arc shape, and the circle center of the fast-assembly adapter coincides with the rotating axis of the lathe clamping jaw. According to the utility model, the labor intensity of operators can be reduced, the working environment of the operators is improved, and the correction cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of optical fiber production and manufacturing, and specifically relates to a calibration device for a quartz core rod and a high-purity quartz sleeve. Background Art

[0002] In the production process of optical fiber preform, the quartz core rod and high-purity quartz sleeve need to be nested and assembled. If the original curvature of one or both of them is too high, the concentricity error after assembly will be too large, causing the concentricity of the optical fiber to be scrapped; it is also possible that during the nested assembly process, the two will rub against each other and produce defects, causing the optical fiber preform to be scrapped; or the rod will be stuck during the assembly process, resulting in the inability to complete the assembly. For the above reasons, during the nested assembly process of the quartz core rod and the high-purity quartz sleeve, a hydrogen-oxygen flame lathe must be used to correct the quartz core rod or high-purity quartz sleeve with too high original curvature.

[0003] The current correction method is usually to clamp one end of the quartz core rod or high-purity quartz sleeve with too high original curvature on the oxyhydrogen flame lathe jaw, and the other end is suspended. When the lathe jaw is rotated, due to the existence of the original curvature, the suspended end of the quartz core rod or high-purity quartz sleeve will swing to a certain extent. At this time, the operator holds the suspended end with the palm of his hand, applies a force toward the rotation axis as a support point, and then uses the oxyhydrogen flame to heat the middle of the quartz core rod or high-purity quartz sleeve to gradually soften it. Due to the support of the operator, the swing amplitude of the suspended end will gradually decrease until it stops swinging, and then the oxyhydrogen flame is turned off to gradually cool and harden the middle of the quartz core rod or high-purity quartz sleeve, and finally the lathe jaw is stopped from rotating to complete the correction. There are many problems with this method, such as: when the middle of the quartz core rod or high-purity quartz sleeve is heated, the operator needs to hold the suspended end for a long time because it is impossible to accurately judge when the heating point softens, and the labor intensity of the operator is relatively high. If there is no support point at the suspended end or the support force is not appropriate, the suspended end of the quartz core rod or high-purity quartz sleeve will sag, worsen the curvature, and even twist and deform, causing it to be scrapped. This method places high demands on the operator's proficiency in controlling the alignment point of the suspended end during swinging and the strength of the lifting force at the suspended end. If the calibration length is small, that is, when the suspended end is close to the heating point, the operator will be close to the high-temperature heat source for a long time and in a poor working environment. He must be equipped with heat-insulating masks, heat-insulating clothing, heat-insulating gloves and other equipment, which increases the calibration cost. Utility Model Content

[0004] The main purpose of the utility model is to provide a calibration device for a quartz core rod and a high-purity quartz sleeve, which can reduce the labor intensity of operators, improve the working environment of operators and reduce the calibration cost.

[0005] The technical solution adopted by the utility model is:

[0006] A calibration device for a quartz core rod and a high-purity quartz sleeve, comprising a clamp, a support plate, a quick-release bracket, a calibration rocker arm, a return spring cylinder, and a quick-release adapter;

[0007] The fixture is clamped on an oxyhydrogen flame lathe;

[0008] The support plate is mounted on the fixture;

[0009] The quick-release bracket is installed on the support plate;

[0010] The correction rocker arm is movably connected to the quick-release bracket, with the connection point as the boundary, the shorter section is the correction section, and the longer end is the rocker arm section; and the correction rocker arm can rotate along the connection point;

[0011] The return spring cylinder is installed at the front end of the correction section of the correction rocker arm; the return spring cylinder is used to provide a centering force to the swinging glass tube (quartz core rod, high-purity quartz sleeve), and the tube will receive the pressure of the return spring in the return spring cylinder no matter which direction it swings;

[0012] The quick-release adapter is connected to the reset spring cylinder, and the quick-release adapter is arc-shaped, and its center coincides with the rotation axis of the lathe claw; when the glass tube (quartz core rod, high-purity quartz sleeve) no longer swings, the spring cylinder is not subjected to external force, and the glass tube is exactly located at the center of the quick-release adapter.

[0013] According to the above scheme, the clamp includes a bottom plate, a front limit block, a rear limit block, and a pressure spring cylinder;

[0014] The front limit block and the rear limit block have V-shaped grooves and are respectively located at the front and rear ends of the bottom plate; the fixture is clamped on the oxyhydrogen flame lathe through the V-shaped grooves of the front limit block and the rear limit block;

[0015] The pressure spring tube includes an outer tube, a pressure spring, and a middle rod; the outer tube is installed on the bottom plate; the pressure spring is placed in the outer tube; the rear end of the middle rod passes through the pressure spring and is connected to the block, and the front end of the middle rod extends out of the outer tube and is connected to the front limit block. When the oxyhydrogen flame lathe needs to be clamped, the front limit block is pulled to drive the middle rod to move forward and away from the outer tube, so that the spring in the outer tube is compressed. At this time, the distance between the front limit block and the rear limit block is greater than the oxyhydrogen flame lathe; when the front limit block is released, the middle rod will retract into the outer tube under the pressure of the spring, so that the front limit block moves toward the outer tube, so that the front limit block and the rear limit block clamp the oxyhydrogen flame lathe; the structure is simple and easy to operate.

[0016] According to the above scheme, the clamp also includes a guide rod; the rear end face of the guide rod has a stud, which is connected to a screw hole on the bottom plate to form a whole, and the front end of the guide rod passes through the sliding hole on the front limit block, and the guide rod can slide in the sliding hole, that is, the rear limit block can slide along the guide rod. The pressure spring tube gives the front limit block a force to slide along the guide rod.

[0017] According to the above solution, the support plate is provided with hollowing to reduce the weight of the entire device.

[0018] According to the above scheme, the support plate is provided with a top plate, and the top plate is provided with a socket; the socket is matched with the protrusion on the bottom surface of the quick-release bracket, and when installing, the protrusion of the quick-release bracket is inserted into the socket on the top plate to connect the support plate and the quick-release bracket, which is very convenient and quick to install. Preferably, there are 4 sockets and 4 protrusions.

[0019] According to the above scheme, the quick-release bracket includes a bracket base plate and a bracket support;

[0020] A protrusion is provided on the bottom surface of the bracket bottom plate;

[0021] The lower end of the bracket support is connected to the bracket bottom plate, and the top of the bracket support is provided with a bearing; the structure is simple and the installation is convenient.

[0022] According to the above scheme, a cylinder is provided on the correction rocker arm, and the cylinder is matched with the bearing on the top of the quick-release bracket; when installing, the cylinder on the correction rocker arm is inserted into the bearing on the top of the quick-release bracket, which is very convenient to install.

[0023] According to the above scheme, a stud is provided at the front end of the return spring cylinder;

[0024] The rear end of the quick-install adapter is provided with a screw hole adapted by the stud; the installation is very convenient.

[0025] According to the above scheme, the reset spring cylinder includes a cylinder body, a reset middle rod, a limit ring, and a reset spring;

[0026] A limiting groove is provided in the cylinder;

[0027] The reset middle rod is provided with a limit ring; there are two reset springs, which are sleeved on the reset middle rod and are respectively located on both sides of the limit rings; one end of the reset middle rod extends into the cylinder, and the reset spring and the limit ring are placed in the limit groove; the other end of the reset middle rod extends out of the cylinder, and a stud is provided at the end;

[0028] When the quartz core rod or high-purity quartz sleeve swings, the reset center rod will be pulled out or pressed into the cylinder, causing a reset spring in the limit groove to be compressed and a reset spring to be stretched, that is, the reset center rod will be pushed by the reset spring on one side, so that the reset center rod returns to the midpoint, so that the quartz core rod or high-purity quartz sleeve stops swinging as soon as possible, and the quartz core rod or high-purity quartz sleeve coincides with the rotation axis of the lathe jaws. That is: when the quick-release adapter / reset center rod is taken away from the midpoint by the suspended end of the swinging tube, the reset center rod will generate a force to return to the midpoint under the thrust of the spring. After the tube is heated and softened, the reset center rod returns to the midpoint, the quartz core rod or high-purity quartz sleeve no longer swings, and the center of the quick-release adapter coincides with the rotation axis of the lathe jaws.

[0029] There are a plurality of quick-release adapters with different diameters. Quick-release adapters with different inner diameters can be replaced according to tubes (quartz core rods and high-purity quartz sleeves) of different thicknesses (outer diameters), and the application range is wide.

[0030] When the suspended end of the quartz core rod or high-purity quartz sleeve swings, the operator presses down the correction rocker arm to make the quick-release adapter generate an upward lifting force on the suspended end in the Y-axis direction, and through the reset spring tube, limit the swing of the suspended end on the X-axis and provide an X-axis direction, centering force. When the middle of the quartz core rod or high-purity quartz sleeve is heated and softened, the suspended end will gradually move closer to the rotation axis of the lathe claw and eventually stop swinging. Turn off the hydrogen-oxygen flame to cool and harden the quartz core rod or high-purity quartz sleeve. At this time, the rotation axis of the quartz core rod or high-purity quartz sleeve at the suspended end is coaxial with the rotation axis of the lathe claw, and the bow curvature is greatly reduced, completing the correction work.

[0031] The beneficial effects of the utility model are:

[0032] Using the lever principle, the suspended end of the quartz core rod or high-purity quartz sleeve is lifted in the quick-install adapter on the correction rocker arm. The tail end of the rocker arm section is controlled by the operator, which greatly reduces the lifting force and labor intensity.

[0033] The reset spring cylinder is provided to provide an alignment point, that is, when the quartz core rod or the high-purity quartz sleeve no longer swings, the quartz core rod or the high-purity quartz sleeve is exactly located at the center of the quick-release adapter, thereby reducing the proficiency requirement;

[0034] The operator operates at the tail end of the rocker arm section of the calibration rocker arm, away from high temperature heat sources, which improves the working environment and reduces the calibration cost;

[0035] Use curved quick-release adapters to match / adapt rotating tubes (quartz core rods and high-purity quartz sleeves);

[0036] The structure is simple, and the operation is convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a three-dimensional structural schematic diagram of the calibration device of the quartz core rod and the high-purity quartz sleeve;

[0039] Figure 2 It is a schematic diagram of the front view structure of the calibration device of the quartz core rod and the high-purity quartz sleeve;

[0040] Figure 3 It is a side view structural schematic diagram of the calibration device of the quartz core rod and the high-purity quartz sleeve;

[0041] Figure 4 It is a schematic diagram of the top view of the structure of the calibration device of the quartz core rod and the high-purity quartz sleeve;

[0042] Figure 5 It is an exploded schematic diagram of the calibration device of the quartz core rod and the high-purity quartz sleeve;

[0043] Figure 6 It is an exploded diagram of the correction rocker arm and quick-release adapter;

[0044] Figure 7 It is a schematic diagram of the structure of the return spring cylinder and the quick-release adapter;

[0045] Figure 8 is an exploded schematic diagram of the return spring cylinder;

[0046] Fig. 9 It is a schematic diagram of the return spring of the return spring cylinder when it is stressed (the return center rod is pressed into the cylinder);

[0047] Fig.10 It is a schematic diagram of the return spring of the return spring cylinder when it is stressed (the return middle rod is pulled out of the cylinder);

[0048] In the figure: 1. clamp, 1.1. bottom plate, 1.2. front limit block, 1.3. rear limit block, 1.4. pressure spring tube, 1.4.1. middle rod, 1.5. guide rod, 2. support plate, 2.1. hollow, 3. quick-release bracket, 3.1. bracket bottom plate, 3.2. bracket support, 3.3. protrusion, 3.4. bearing, 4. correction rocker arm, 5. reset spring tube, 5.1. cylinder, 5.2. reset middle rod, 5.3. limit ring, 5.4. limit groove, 5.5. reset spring, 6. quick-release adapter, 7. top plate, 8. jack, 9. cylinder, 10. stud, 11. screw hole, 12. V-groove. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0050] join Figure 1-Figure 10 A calibration device for a quartz core rod and a high-purity quartz sleeve comprises a fixture 1, a support plate 2, a quick-release bracket 3, a calibration rocker arm 4, a return spring cylinder 5, and a quick-release adapter 6.

[0051] The fixture 1 is clamped on the oxyhydrogen flame lathe, and includes a base plate 1.1, a front limit block 1.2, a rear limit block 1.3, and a pressure spring tube 1.4. The front limit block 1.2 and the rear limit block 1.3 have a V-shaped groove 12, and are respectively located at the front and rear ends of the base plate 1.1; the entire device is fixed on the oxyhydrogen flame lathe through the V-shaped groove 12 of the front limit block 1.2 and the rear limit block 1.3. In this embodiment, the pressure spring tube 1.4 is a conventional product, which includes an outer tube, a pressure spring, and a middle rod. The outer tube is mounted on the base plate 1.1; the pressure spring is placed in the outer tube; the rear end of the middle rod 1.4.1 passes through the pressure spring and is connected to the block, and the front end of the middle rod 1.4.1 extends out of the outer tube and is connected to the front limit block 1.2. When it is necessary to clamp the oxyhydrogen flame lathe, pull the front limit block 1.2, thereby driving the middle rod 1.4.1 to move forward and away from the outer tube, so that the pressure spring in the outer tube is compressed. At this time, the distance between the front limit block 1.2 and the rear limit block 1.3 is greater than the oxyhydrogen flame lathe; release the front limit block 1.2, and the middle rod 1.4.1 will retract into the outer tube under the pressure of the pressure spring, so that the front limit block 1.2 moves toward the outer tube, so that the front limit block 1.2 and the rear limit block 1.3 clamp the oxyhydrogen flame lathe. In order to make the structure more stable, the clamp 1 also includes a guide rod 1.5. The rear end face of the guide rod 1.5 has a stud, which is connected to the screw hole on the bottom plate 1.1 to form a whole. The front end of the guide rod 1.5 passes through the sliding hole on the front limit block 1.2, and the guide rod 1.5 can slide in the sliding hole, that is, the rear limit block 1.2 can slide along the guide rod 1.5. The pressure spring cylinder 1.4 applies a force to the front limit block 1.2 to slide along the guide rod 1.5.

[0052] The support plate 1 is mounted on the bottom plate 1.1 of the fixture 1. In order to reduce the weight of the entire device, a hollow 2.1 is provided on the support plate 1. A top plate 7 is provided on the support plate 1, and four insertion holes 8 are provided on the top plate 7.

[0053] The quick-release bracket 3 includes a bracket bottom plate 3.1 and a bracket support 3.2. Four protrusions 3.3 are provided on the bottom surface of the bracket bottom plate 3.1; the four protrusions 3.3 are adapted to the four sockets 8 on the top plate 7. The lower end of the bracket support 3.2 is connected to the bracket bottom plate 3.1, and a bearing 3.4 is provided on the top of the bracket support 3.2. When installing, the protrusion 3.3 of the quick-release bracket 3 is inserted into the socket 8 on the top plate 7 to connect the support plate 2 with the quick-release bracket 3, which is very convenient to install. In this embodiment, the protrusion 3.3 is a cylindrical protrusion.

[0054] The correction rocker arm 4 is provided with a cylinder 9, which is matched with the bearing 3.4 at the top of the quick-mount bracket 3; when installing, the cylinder 9 on the correction rocker arm 4 is inserted into the bearing 3.4 at the top of the quick-mount bracket 3, and the correction rocker arm 4 can rotate. With the cylinder 9 as the boundary, the shorter section of the correction rocker arm 4 is the correction section, and the longer end is the rocker arm section. The front end of the correction section of the correction rocker arm 4 is provided with a return spring cylinder 5.

[0055] In this embodiment, the reset spring cylinder 5 includes a cylinder body 5.1, a reset middle rod 5.2, a limit ring 5.3, and a reset spring 5.5. A limit groove 5.4 is provided in the cylinder body 5.1. A limit ring 5.3 is provided on the reset middle rod 5.2. There are two reset springs 5.5, which are sleeved on the reset middle rod 5.2 and are respectively located on both sides of the limit ring 5.3; one end of the reset middle rod 5.2 extends into the cylinder body 5.1, and the reset spring 5.5 and the limit ring 5.3 are placed in the limit groove 5.4; the other end of the reset middle rod 5.2 extends out of the cylinder body 5.1, and a stud 10 is provided at the end. The reset spring cylinder 5 is to provide a centering force to the swinging glass tube (quartz core rod, high-purity quartz sleeve). No matter in which direction the tube swings, it will receive the pressure of the reset spring in the reset spring cylinder 5, so that the tube stops swinging as soon as possible, so that the tube is exactly located at the center of the circle of the quick-release adapter.

[0056] The quick-release adapter 6 is arc-shaped, and its center coincides with the rotation axis of the lathe jaws; the rear end of the quick-release adapter 6 is provided with a screw hole 11 adapted to the stud 10. When the glass tube (quartz core rod, high-purity quartz sleeve) no longer swings, the return spring cylinder 5 is not subjected to external force, and the glass tube is exactly located at the center of the quick-release adapter 6.

[0057] When the suspended end of the quartz core rod or high-purity quartz sleeve swings, the operator presses down the correction rocker arm 4, so that the quick-release adapter 6 generates an upward lifting force in the Y-axis direction on the suspended end, and limits the swing of the suspended end on the X-axis through the reset spring tube 5, and provides an X-axis direction, centering force. When the middle of the quartz core rod or high-purity quartz sleeve is heated and softened, the suspended end will gradually move closer to the rotation axis of the lathe claw and eventually stop swinging. Turn off the hydrogen-oxygen flame to cool and harden the quartz core rod or high-purity quartz sleeve. At this time, the rotation axis of the quartz core rod or high-purity quartz sleeve at the suspended end is coaxial with the rotation axis of the lathe claw, and the bow curvature is greatly reduced, completing the correction work.

[0058] After using this device, the force of the operator pressing down the correction rocker arm 4 is only about 20% of the original lifting force, which reduces the labor intensity. The working temperature of the operator facing the heat source is reduced from about 90°C to about 40°C, and no additional insulation and heat dissipation equipment is required, which improves the working environment and reduces production costs. The minimum correction length is reduced from 400mm to 100mm, and the quartz core rod or high-purity quartz sleeve that could not be corrected before can also be corrected, reducing the scrap rate.

[0059] Example 2

[0060] The difference from the first embodiment is that there are multiple quick-release adapters 6, each of which has a different diameter. Quick-release adapters with different inner diameters can be replaced according to tubes (quartz core rods or high-purity quartz sleeves) of different thicknesses (outer diameters), and the application range is wide.

[0061] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0062] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A calibration device for a quartz core rod and a high-purity quartz sleeve, characterized in that: Including fixture, support plate, quick-release bracket, correction rocker arm, return spring cylinder, quick-release adapter; The fixture is clamped on an oxyhydrogen flame lathe; The support plate is mounted on the fixture; The quick-release bracket is installed on the support plate; The correction rocker arm is movably connected to the quick-release bracket, with the connection point as the boundary, the shorter section is the correction section, and the longer end is the rocker arm section; and the correction rocker arm can rotate along the connection point; The return spring cylinder is installed at the front end of the correction section of the correction rocker arm; The quick-release adapter is connected to the return spring cylinder, and the quick-release adapter is arc-shaped, and the center of the circle coincides with the rotation axis of the lathe clamping claw.

2. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1, characterized in that: The clamp comprises a bottom plate, a front limit block, a rear limit block, and a pressure spring cylinder; The front limit block and the rear limit block have V-shaped grooves and are respectively located at the front and rear ends of the bottom plate; the fixture is clamped on the oxyhydrogen flame lathe through the V-shaped grooves of the front limit block and the rear limit block; The pressure spring tube includes an outer tube, a pressure spring, and a middle rod; the outer tube is installed on the bottom plate; the pressure spring is placed in the outer tube; the rear end of the middle rod passes through the pressure spring and is connected to the stopper, and the front end of the middle rod extends out of the outer tube and is connected to the front limit block.

3. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 2, characterized in that: The clamp also includes a guide rod; the rear end of the guide rod is fixed on the bottom plate, the front end of the guide rod passes through the sliding hole on the front limit block, and the guide rod can slide in the sliding hole.

4. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1, characterized in that: The support plate is provided with a hollow.

5. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1 or 4, characterized in that: The support plate is provided with a top plate, and the top plate is provided with a socket; the socket is matched with the protrusion on the bottom surface of the quick-release bracket. When installing, the protrusion of the quick-release bracket is inserted into the socket on the top plate to connect the support plate and the quick-release bracket.

6. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1, characterized in that: The quick-release bracket includes a bracket base plate and a bracket support; A protrusion is provided on the bottom surface of the bracket bottom plate; The lower end of the bracket support is connected to the bracket bottom plate, and a bearing is arranged on the top of the bracket support.

7. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1, characterized in that: The correction rocker arm is provided with a cylinder which matches with the bearing at the top of the quick-mount bracket. When installing, the cylinder on the correction rocker arm is inserted into the bearing at the top of the quick-mount bracket.

8. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1, characterized in that: A stud is provided at the front end of the return spring cylinder; The rear end of the quick-install adapter is provided with a screw hole matched with the stud.

9. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1 or 8, characterized in that: The reset spring cylinder comprises a cylinder body, a reset middle rod, a limit ring and a reset spring; A limiting groove is provided in the cylinder; A limiting ring is provided on the reset middle rod; there are two reset springs, which are sleeved on the reset middle rod and are respectively located on both sides of the limiting rings; one end of the reset middle rod extends into the cylinder, and the reset spring and the limiting ring are placed in the limiting groove; the other end of the reset middle rod extends out of the cylinder, and a stud is provided at the end.

10. The calibration device for the quartz core rod and the high-purity quartz sleeve according to claim 1, characterized in that: There are a plurality of quick-install adapters with different diameters, which can be used in conjunction with the calibration of quartz core rods and high-purity quartz sleeves with different diameters.

Images