Pickling Bracket for Finished Optical Fiber Rod

Abstract

The present invention relates to the field of optical fibers, and specifically relates to an acid pickling bracket for an optical fiber finished rod, which includes a fixed bracket arranged around an acid pickling tank and a movable bracket arranged inside the acid pickling tank. Guide columns vertically extending to the inner bottom end of the acid pickling tank are provided at the four corners of the fixed bracket. The movable bracket is sleeved on the guide columns through guide openings provided thereon. A lifting drive for driving the movement of the movable bracket is provided on the fixed bracket. A plurality of support units are equidistantly arranged on the movable bracket. Each support unit is provided with a first end support assembly and a second end support assembly. A gap for horizontally placing a preform is left between the first end support assembly and the second end support assembly. By fixing the preform through the first end support assembly and the second end support assembly, the present invention enables the preform to be horizontally placed on the movable bracket, and through the arrangement of a plurality of support units on the movable bracket, a plurality of preforms can be pickled together, improving the pickling efficiency.

Description

Technical Field

[0001] The present invention relates to the field of optical fibers, and more particularly to an acid pickling bracket for finished optical fiber rods. Background Art

[0002] The quartz optical fiber preform is the core of the optical fiber manufacturing process. To ensure the quality of the optical fiber preform, pickling treatment must be carried out before drawing and coating. The traditional pickling equipment for optical fiber preforms is a fixed pickling tank. A large amount of pickling solution is required to pickle the optical fiber preform in the pickling tank. Since the pickling solution contains hydrofluoric acid, its permeability and corrosiveness are very strong. Even if the motor is arranged outside the pickling equipment and mechanical seals and sealing rings are used for sealing, it is impossible to ensure that the output shaft of the motor is not corroded, which affects the pickling efficiency and cost of the optical fiber preform. To meet the requirement of transmission strength, it is impossible to use plastic transmission parts with high corrosion resistance for torque transmission. Therefore, the traditional pickling equipment for optical fiber preforms has the technical problems of poor corrosion resistance, low pickling efficiency, and high pickling cost.

[0003] The currently disclosed Chinese patent CN201711397262.6 for an optical fiber preform pickling device includes a pickling chamber, a motor installed at the top end outside the pickling chamber, and a rotating shaft bracket arranged inside the pickling chamber. It further includes: a gas seal drive mechanism. The gas seal drive mechanism includes a drive shaft, a fixed part with an intake cavity, and an adapter part with a ventilation cavity. An intake hole is formed on the fixed part, and the intake hole communicates with the intake cavity. The fixed part is arranged inside the pickling chamber through a part of the top plate of the pickling chamber. The adapter part is arranged inside the pickling chamber and connected to the rotating shaft bracket, and the adapter part is rotatably connected to the fixed part. The intake cavity and the ventilation cavity communicate to form a gas seal chamber. A part of the drive shaft is arranged in the gas seal chamber, one end is connected to the adapter part, and the other end passes through the fixed part and is connected to the output shaft of the motor. The gas seal drive mechanism includes a drive shaft, a fixed part, and an adapter part. An intake hole is formed on the fixed part, and the intake cavity of the fixed part and the ventilation cavity of the adapter part communicate to form a gas seal chamber. The gas seal drive mechanism is installed on the top plate of the pickling chamber through the fixed part and connected to the rotating shaft bracket through the adapter part. The drive shaft is respectively connected to the output shaft of the motor and the adapter part. When the optical fiber preform pickling device works, the motor drives the drive shaft to rotate, the drive shaft drives the adapter part to rotate, and then drives the rotating shaft bracket to rotate with the motor to rotate and pickle the optical fiber preform installed on the rotating shaft bracket.

[0004] According to the above-mentioned patent, when the optical fiber preform pickling equipment of the patent operates, compressed air is introduced into the air seal chamber through the air inlet hole to form a positive pressure in the air seal chamber, so that the pressure in the air seal chamber is greater than the pressure outside the air seal chamber, forming an air seal isolation in the air seal chamber, preventing the pickling solution from penetrating into the air seal chamber, and the transmission shaft is not corroded by the pickling solution, effectively protecting the transmission shaft and the motor. However, this patent can only pickle a single preform, with too low efficiency, and when removing the preform, the pickling solution on it is likely to drip everywhere, making it inconvenient to clean. Therefore, there is currently a need for a pickling bracket that can pickle multiple preforms simultaneously and ensure that the pickling solution on them does not drip everywhere. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, a pickling bracket for optical fiber finished preforms is provided. In the present invention, the preform is fixed by the first end support assembly and the second end support assembly, so that the preform is kept in a horizontal placement state on the movable bracket. And through the arrangement of multiple support units on the movable bracket, multiple preforms can be pickled together, improving the pickling efficiency.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a pickling bracket for optical fiber finished preforms, including a fixed bracket arranged around the pickling tank and a movable bracket arranged inside the pickling tank. The movable bracket can move vertically in the pickling tank. Guide columns vertically extending to the inner bottom end of the pickling tank are provided at the four corners of the fixed bracket. The movable bracket is sleeved on the guide columns through guide openings provided thereon. A lifting drive for driving the movable bracket to move is provided on the fixed bracket. Multiple support units are equidistantly arranged on the movable bracket. The support direction of each support unit is in a horizontal state. The support unit is provided with a first end support assembly and a second end support assembly for positioning the preform. The first end support assembly is arranged on one side of the movable bracket, and the second end support assembly is arranged on the other side of the movable bracket opposite to the first end support assembly. A gap for the horizontal placement of the preform is left between the first end support assembly and the second end support assembly.

[0008] Preferably, the first end support assembly is provided with an end sleeve. The end sleeve is in a cylindrical structure with one end open and one end closed. The closed end of the end sleeve is rotatably connected to the movable bracket. A first shaft joint seat is provided at the position corresponding to the end sleeve on the movable bracket. The closed end of the end sleeve has a shaft joint part rotatably connected to the first shaft joint seat. The rotation direction of the end sleeve faces the second end support assembly. The inner diameter size of the end sleeve is equal to the end diameter of the preform, and the opening of the end sleeve faces outward.

[0009] Preferably, the second end support assembly is provided with a support semi-ring and a limit semi-ring. The support semi-ring is fixedly arranged on the movable bracket, and the limit semi-ring is movably arranged on the movable bracket. The opening of the support semi-ring faces upward, and the opening of the limit semi-ring faces downward. When the support semi-ring and the limit semi-ring are butted, they form a clamping opening for clamping the end of the preform. A linear driver for driving the limit semi-ring to move is arranged on the movable bracket.

[0010] Preferably, a rotating support assembly for facilitating the leveling and taking out of the preform is also fixedly arranged on the movable bracket. The rotating support assembly is located between the first end support assembly and the second end support assembly. The rotating support assembly can move along the side length direction of the pickling tank. When the rotating support assembly is in a position close to the first end support assembly, the preform is in a lifted state. When the rotating support assembly is in a position close to the second end support assembly, the preform is in a flat state.

[0011] Preferably, the rotating support assembly is provided with a movable member. The movable member is movably arranged between the first end support assembly and the second end support assembly, and the movable member can slidably sleeved on the preform. One side plate is arranged on each side of the movable member, and each side plate is fixedly connected to the movable bracket. The movable member is movably connected to the two side plates.

[0012] Preferably, the movable member is provided with a plurality of sliding sleeves. The plurality of sliding sleeves are an integral body. The number of sliding sleeves is equal to the number of support units. Each sliding sleeve is correspondingly located between the first end support assembly and the second end support assembly of each support unit. Both ends of the movable member are movably connected to the corresponding sides. The inner diameter of each sliding sleeve is larger than the diameter of the preform, and a circular sponge is fixedly arranged in each sliding sleeve. When the preform passes through the sliding sleeve, the surface of the sponge is in contact with the preform.

[0013] Preferably, a track groove for the movable member to move is opened on each side plate. The opening direction of the track groove from the first end support assembly to the second end support assembly is opened from high to low. A roller is rotatably arranged in the track groove of each side plate. The movable member is arranged between the two rollers, and both ends of the movable member are coaxially connected to the corresponding rollers through a rotating shaft.

[0014] Preferably, the shaft connecting parts of all support units and the first shaft connecting seat are connected by a rotating shaft. The shaft connecting parts on each end sleeve are fixedly connected to the rotating shaft. Both ends of the rotating shaft are rotatably connected to a second shaft connecting seat. Each second shaft connecting seat is fixedly arranged on the movable bracket, and a torsion spring sleeved on the rotating shaft is fixedly connected between each second shaft connecting seat and the rotating shaft. When no preform is arranged in the end sleeve, the opening of the end sleeve faces upward.

[0015] Preferably, the outer side of the limiting semi-ring has a closed end, and a pressing rod is movably inserted on the closed end. The pressing rod is coaxial with the limiting semi-ring. The end of the pressing rod facing the limiting semi-ring is round-headed, and the other end of the pressing rod has an anti-detachment end with a diameter larger than that of the pressing rod. A buffer spring sleeved on the pressing rod is fixedly connected between the anti-detachment end and the closed end of the limiting semi-ring.

[0016] Preferably, a connecting plate is drivingly connected to the linear driver, and each limiting semi-ring is fixedly connected to the connecting plate.

[0017] The beneficial effects of this application compared with the prior art are as follows:

[0018] 1. By fixing the preform through the first end support assembly and the second end support assembly, the preform is kept horizontally placed on the movable bracket. And through the arrangement of multiple support units on the movable bracket, multiple preforms can be pickled together, realizing the comprehensive pickling of the preforms and improving the pickling efficiency.

[0019] 2. Through the rotational connection between the end sleeve and the first shaft joint seat, the preform can be inserted in an inclined state and then placed horizontally on the second end support assembly, which is convenient for placing the preform, realizing that the preform is immersed in the pickling solution in a flat state, ensuring that the preform is comprehensively pickled, and improving the flexibility of placing the preform.

[0020] 3. By clamping the end of the preform between the support semi-ring and the limiting semi-ring, the end of the preform is limited, ensuring the fixation of the preform in the horizontal state, realizing the stability of the preform when immersed in the pickling solution, and avoiding the phenomenon that the preform floats in the pickling solution, which is not conducive to the comprehensive pickling of the preform, and improving the stability of the preform during the pickling process.

[0021] 4. After the preform passes through the movable part, as the movable part moves, the movable part gradually moves towards the direction of the second end support assembly until the movable part is horizontal, realizing the guidance of the horizontal state of the preform, ensuring that the preform can be stably supported between the first end support assembly and the second end support assembly, reducing manual labor, and improving the placement efficiency. Description of the Drawings

[0022] Figure 1 is a three-dimensional structural schematic diagram of the pickling bracket for the finished optical fiber preform;

[0023] Figure 2 is a top view of the pickling bracket for the finished optical fiber preform;

[0024] Figure 3 is Figure 2 a three-dimensional structural sectional view at A-A of

[0025] Figure 4 is Figure 2 a perspective cross-sectional view taken along line B-B;

[0026] Figure 5 is a partial perspective view of the pickling bracket for the finished optical fiber rod;

[0027] Figure 6 is a perspective view of the preform and the support unit of the pickling bracket for the finished optical fiber rod;

[0028] Figure 7 is a partial perspective cross-sectional view of the pickling bracket for the finished optical fiber rod;

[0029] Figure 8 is Figure 3 an enlarged view taken at position C;

[0030] Figure 9 is Figure 3 an enlarged view taken at position D;

[0031] Figure 10 is Figure 7 an enlarged view taken at position E.

[0032] The reference numerals in the figure are:

[0033] 1 - pickling tank; 2 - fixed bracket; 21 - guide post; 3 - movable bracket; 4 - lifting drive; 5 - support unit; 51 - first end support assembly; 511 - end sleeve; 5111 - shaft joint; 512 - first shaft joint seat; 513 - rotating shaft; 5131 - torsion spring; 514 - second shaft joint seat; 52 - second end support assembly; 521 - support semi-ring; 522 - limit semi-ring; 5221 - pressing rod; 5222 - buffer spring; 523 - linear drive; 5231 - connecting plate; 6 - rotating support assembly; 61 - movable part; 611 - sliding sleeve; 612 - sponge; 62 - side plate; 621 - track groove; 63 - roller; 631 - rotating shaft; 7 - preform. Detailed Embodiment

[0034] To further understand the features, technical means, and the specific purposes and functions achieved by the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Refer to Figures 1 - 5As shown in the figure, the pickling bracket for the finished optical fiber rod includes a fixed bracket 2 arranged outside the pickling tank 1 and a movable bracket 3 arranged inside the pickling tank 1. The movable bracket 3 can move vertically in the pickling tank 1. Guide columns 21 vertically extending to the inner bottom end of the pickling tank 1 are provided at the four corners of the fixed bracket 2. The movable bracket 3 is sleeved on the guide columns 21 through guide openings. A lifting drive 4 for driving the movable bracket 3 to move is provided on the fixed bracket 2. A plurality of support units 5 are equidistantly arranged on the movable bracket 3. The support direction of each support unit 5 is horizontal. The support unit 5 is provided with a first end support assembly 51 and a second end support assembly 52 for positioning the preform 7. The first end support assembly 51 is arranged on one side of the movable bracket 3, and the second end support assembly 52 is arranged on the other side of the movable bracket 3 opposite to the first end support assembly 51. A gap for horizontally placing the preform 7 is left between the first end support assembly 51 and the second end support assembly 52.

[0036] When pickling the preform 7, first place a plurality of preforms 7 on each support unit 5 together. When fixing the preform 7 through the support unit 5, first fix one end of the preform 7 to the first end support assembly 51, and then fix the other end of the preform 7 to the second end support assembly 52. After the preform 7 is fixed to the first end support assembly 51 and the second end support assembly 52, the preform 7 is in a horizontally placed state. Since a plurality of support units 5 are equidistantly distributed on the movable bracket 3, multiple preforms 7 can be placed for pickling operations simultaneously. Then, the lifting drive 4 drives the movable bracket 3 to move along the guide columns 21 towards the inside of the pickling tank 1 until the preform 7 enters the pickling solution, and the preform 7 is pickled comprehensively by an immersion method. After the pickling of the preform 7 is completed, the lifting drive 4 moves the movable bracket 3 out of the pickling tank 1, and then removes the preform 7 from between the first end support assembly 51 and the second end support assembly 52 to complete the pickling work of the preform 7.

[0037] See Figures 5 - 8 As shown in the figure, the first end support assembly 51 is provided with an end sleeve 511. The end sleeve 511 has a cylindrical structure with one end open and one end closed. The closed end of the end sleeve 511 is rotatably connected to the movable bracket 3. A first shaft connection seat 512 is provided at the position of the movable bracket 3 corresponding to the end sleeve 511. The closed end of the end sleeve 511 has a shaft connection portion 5111 rotatably connected to the first shaft connection seat 512. The rotation direction of the end sleeve 511 faces the second end support assembly 52. The inner diameter of the end sleeve 511 is equal to the end diameter of the preform 7, and the opening of the end sleeve 511 faces outward.

[0038] When the first end support assembly 51 fixes the end of the preform 7, the end of the preform 7 is inserted into the end sleeve 511. The preform 7 is then limited in position. Since the end sleeve 511 is rotatably connected to the first pivot base 512, the end sleeve 511 can change the orientation of its opening. This facilitates the insertion of the end of the preform 7 into the end sleeve 511 and also facilitates placing the preform 7 in a horizontal state on the movable support 3, which is beneficial for the operations of laying the preform 7 flat and removing it.

[0039] See Figure 5 、 Figure 6 and Figure 9 As shown in, the second end support assembly 52 is provided with a support semi-ring 521 and a limit semi-ring 522. The support semi-ring 521 is fixedly arranged on the movable support 3, and the limit semi-ring 522 is movably arranged on the movable support 3. The opening of the support semi-ring 521 faces upward, and the opening of the limit semi-ring 522 faces downward. When the support semi-ring 521 and the limit semi-ring 522 are docked, they form a clamping opening for clamping the end of the preform 7. A linear actuator 523 for driving the limit semi-ring 522 to move is provided on the movable support 3.

[0040] When the preform 7 is laid flat, the preform 7 rotates around the pivot point of the end sleeve 511 until the other end of the preform 7 supports on the support semi-ring 521. At this time, the preform 7 is in a state of being laid flat between the end sleeve 511 and the support semi-ring 521. One end of the preform 7 is limited in position by the end sleeve 511, and the other end of the preform 7 is limited by the limit semi-ring 522. In the normal state, the limit semi-ring 522 is in a staggered position with the support semi-ring 521. After the end of the preform 7 supports on the support semi-ring 521, the linear actuator 523 drives the limit semi-ring 522 to move towards the support semi-ring 521 until the limit semi-ring 522 is docked with the support semi-ring 521. At this time, the end of the preform 7 is between the support semi-ring 521 and the limit semi-ring 522, thus being limited in position. The limitation of both ends of the preform 7 also fixes it.

[0041] See Figure 5 、 Figure 7 and Figure 10 As shown in, a rotating support assembly 6 for facilitating the laying flat and removal of the preform 7 is also fixedly arranged on the movable support 3. The rotating support assembly 6 is located between the first end support assembly 51 and the second end support assembly 52. The rotating support assembly 6 can move along the side length direction of the pickling tank 1. When the rotating support assembly 6 is at a position close to the first end support assembly 51, the preform 7 is in a lifted state. When the rotating support assembly 6 is at a position close to the second end support assembly 52, the preform 7 is in a laid flat state.

[0042] When the end of the preform 7 is inserted into the end sleeve 511, the preform 7 is connected to the rotating support assembly 6. The rotating support assembly 6 plays a role in guiding and supporting the preform 7. After the preform 7 is docked with the end sleeve 511 in a vertical or inclined state, the rotating support assembly 6 guides the preform 7 until the preform 7 slowly reaches a horizontal state, enabling the other end of the preform 7 to be supported on the support semi-ring 521, which is beneficial for the placement of the preform 7. Moreover, the rotating support assembly 6 also has the effect of scraping the surface pickling solution of the preform 7, preventing a large amount of pickling solution from remaining on the preform 7 when the preform 7 is taken out, which may cause dripping around.

[0043] See Figure 7 and Figure 10 As shown, the rotating support assembly 6 is provided with a movable member 61. The movable member 61 is movably arranged between the first end support assembly 51 and the second end support assembly 52, and the movable member 61 is slidably sleeved on the preform 7. A side plate 62 is provided on each side of the movable member 61, and each side plate 62 is fixedly connected to the movable bracket 3. The movable member 61 is movably connected to the two side plates 62.

[0044] When the rotating support assembly 6 is connected to the preform 7, the end of the preform 7 passes through the movable member 61 and is inserted into the end sleeve 511. At this time, the preform 7 is in a lifted state. As the movable member 61 moves between the two sides, the movable member 61 gradually moves towards the direction of the second end support assembly 52, causing the preform 7 to be gradually driven by the movable member 61 to tend to be horizontal, and prompting the preform 7 to be fixed in a flat state between the first end support assembly 51 and the second end support assembly 52. When the preform 7 is taken out, the second end support assembly 52 releases the limit on the end of the preform 7, and the movable member 61 gradually moves towards the direction of the first end support assembly 51 until the preform 7 is lifted around the axis of the end sleeve 511, thus facilitating the removal of the preform 7.

[0045] See Figure 7 and Figure 10 As shown, the movable member 61 is provided with a plurality of sliding sleeves 611. The plurality of sliding sleeves 611 are integral parts. The number of sliding sleeves 611 is equal to the number of support units 5. Each sliding sleeve 611 is correspondingly located between the first end support assembly 51 and the second end support assembly 52 of each support unit 5. Both ends of the movable member 61 are movably connected to the corresponding sides. The inner diameter of each sliding sleeve 611 is larger than the diameter of the preform 7, and a ring-shaped sponge 612 is fixedly provided in each sliding sleeve 611. When the preform 7 passes through the sliding sleeve 611, the surface of the sponge 612 is in contact with the preform 7.

[0046] When the movable member 61 moves on the preform 7, since the movable member 61 is integrally composed of a plurality of sliding sleeves 611, each support unit 5 can place the corresponding preform 7 with the corresponding sliding sleeve 611, so as to place a plurality of preforms 7 simultaneously. When the end of the preform 7 is inserted into the end sleeve 511, it first passes through the sliding sleeve 611, and the surface of the preform 7 contacts the sponge 612 in the sliding sleeve 611, avoiding scratching the surface of the preform 7 during the sliding process. After the preform 7 is laid flat, the preform 7 is immersed in the pickling solution for pickling treatment. Until the preform 7 is removed from the pickling tank 1, the sliding sleeve 611 lifts the preform 7. During the process of the sliding sleeve 611 sliding on the preform 7, the sponge 612 can scrape the pickling solution on its surface, ensuring that the phenomenon of continuous dripping of the pickling solution is avoided when the preform 7 is taken out.

[0047] See Figure 7 and Figure 10 As shown, a track groove 621 for the movable member 61 to move is provided on each side plate 62. The track groove 621 is opened from high to low in the opening direction from the first end support assembly 51 to the second end support assembly 52. A roller 63 is rotatably provided in the track groove 621 of each side plate 62. The movable member 61 is arranged between the two rollers 63, and both ends of the movable member 61 are coaxially connected to the corresponding rollers 63 through a rotating shaft 631.

[0048] When the movable member 61 moves between the two side plates 62, the movable member 61 moves in the track groove 621 on the side through the roller 63. Due to the inclined opening mode of the track groove 621 and the rotational connection between the movable member 61 and the roller 63 through the rotating shaft 631, when the movable member 61 moves towards the first end support assembly 51, the preform 7 is in a lifted state around the axis of the end sleeve 511 for easy removal. When the movable member 61 moves towards the second end support assembly 52, the preform 7 gradually tends to be horizontal. The roller 63 can move independently in the track groove 621 of the side plate 62, and the operator only needs to control the roller 63 to start without moving the roller 63.

[0049] See Figure 4 As shown, the shaft connection part 5111 of all support units 5 and the first shaft connection seat 512 are connected by a rotating shaft 513. The shaft connection part 5111 on each end sleeve 511 is fixedly connected to the rotating shaft 513. Both ends of the rotating shaft 513 are rotatably connected to a second shaft connection seat 514. Each second shaft connection seat 514 is fixedly arranged on the movable bracket 3, and a torsion spring 5131 sleeved on the rotating shaft 513 is fixedly connected between each second shaft connection seat 514 and the rotating shaft 513. When there is no preform 7 in the end sleeve 511, the opening of the end sleeve 511 is in an upward state.

[0050] After the preform 7 is pulled out from the end sleeve 511, since the shaft connecting portion 5111 of the end sleeve 511 and the first shaft connecting seat 512 are connected by a rotating shaft 513, and the rotating shaft 513 and the second shaft connecting seat 514 are connected by a torsion spring 5131, therefore, in the normal state of the torsion spring 5131, the opening of the end sleeve 511 faces outward, while when the preform 7 is placed flat, the opening of the end sleeve 511 faces the second end support assembly 52, and the torsion spring 5131 is also in a twisted state, which facilitates the docking of the end of the preform 7 with the end sleeve 511 after passing through the sliding sleeve 611.

[0051] See Figure 9 As shown, the outer side of the limit semi-ring 522 has a closed end, and a pressing rod 5221 is movably inserted on the closed end. The pressing rod 5221 and the limit semi-ring 522 are coaxial. The end of the pressing rod 5221 facing the limit semi-ring 522 is round-headed. The other end of the pressing rod 5221 has an anti-detachment end with a diameter larger than that of the pressing rod 5221, and a buffer spring 5222 sleeved on the pressing rod 5221 is fixedly connected between the anti-detachment end and the closed end of the limit semi-ring 522.

[0052] When the limit semi-ring 522 limits the end of the preform 7, the limit semi-ring 522 moves towards the support semi-ring 521. Until the pressing rod 5221 on the limit semi-ring 522 contacts the end of the preform 7, the limit semi-ring 522 continues to move, and the buffer spring 5222 is compressed accordingly, which has a buffering effect on the pressing rod 5221. Until the closed end of the limit semi-ring 522 contacts the end of the preform 7, the positioning of the preform 7 is completed. The pressing rod 5221 presses the end of the preform 7, so that the preform 7 can be more stably positioned between the pressing rod 5221 and the end sleeve 511.

[0053] See Figure 9 As shown, a connecting plate 5231 is drivingly connected to the linear actuator 523, and each limit semi-ring 522 is fixedly connected to the connecting plate 5231.

[0054] When the linear actuator 523 drives the limit semi-ring 522 to move, since the limit semi-rings 522 of all the support units 5 are fixedly connected by a connecting plate 5231, therefore, with the start of the linear actuator 523, all the limit semi-rings 522 move together to position the corresponding preforms 7.

[0055] In the present invention, through the fixation of the preform 7 by the first end support assembly 51 and the second end support assembly 52, the preform 7 is kept in a horizontal placement state on the movable bracket 3, and through the arrangement of multiple support units 5 on the movable bracket 3, multiple preforms 7 can be pickled together, improving the pickling efficiency.

[0056] The above embodiments merely represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. The pickling support for the finished optical fiber rod includes a fixed support (2) arranged around the pickling tank (1) and a movable support (3) arranged inside the pickling tank (1). The movable support (3) can move vertically in the pickling tank (1). Guide columns (21) vertically extending to the inner bottom end of the pickling tank (1) are provided at the four corners of the fixed support (2). The movable support (3) is sleeved on the guide columns (21) through guide openings. A lifting drive (4) for driving the movable support (3) to move is provided on the fixed support (2). It is characterized in that A plurality of support units (5) are equidistantly arranged on the movable support (3). The support direction of each support unit (5) is horizontal. The support unit (5) is provided with a first end support assembly (51) and a second end support assembly (52) for positioning the preform (7). The first end support assembly (51) is arranged on one side of the movable support (3), and the second end support assembly (52) is arranged on the other side of the movable support (3) opposite to the first end support assembly (51). A gap for horizontally placing the preform (7) is left between the first end support assembly (51) and the second end support assembly (52). The first end support assembly (51) is provided with an end sleeve (511). The end sleeve (511) is in a cylindrical structure with one end open and one end closed. The closed end of the end sleeve (511) is rotatably connected to the movable support (3). A first shaft connection seat (512) corresponding to the position of the end sleeve (511) is provided on the movable support (3). The closed end of the end sleeve (511) has a shaft connection part (5111) rotatably connected to the first shaft connection seat (512). The rotation direction of the end sleeve (511) faces the second end support assembly (52). The inner diameter of the end sleeve (511) is equal to the end diameter of the preform (7), and the opening of the end sleeve (511) faces outward. The second end support assembly (52) is provided with a support half-ring (521) and a limit half-ring (522). The support half-ring (521) is fixedly arranged on the movable support (3), and the limit half-ring (522) is movably arranged on the movable support (3). The opening of the support half-ring (521) faces upward, and the opening of the limit half-ring (522) faces downward. When the support half-ring (521) and the limit half-ring (522) are butted, a clamping opening for clamping the end of the preform (7) is formed between them. A linear drive (523) for driving the limit half-ring (522) to move is provided on the movable support (3).

2. The pickling support for the finished optical fiber rod according to claim 1, It is characterized in that The movable support (3) is further provided with a rotating support assembly (6) for facilitating the leveling and removal of the preform (7). The rotating support assembly (6) is located between the first end support assembly (51) and the second end support assembly (52). The rotating support assembly (6) can move along the side length direction of the pickling tank (1). When the rotating support assembly (6) is at a position close to the first end support assembly (51), the preform (7) is in a lifted state. When the rotating support assembly (6) is at a position close to the second end support assembly (52), the preform (7) is in a flat state. The rotating support assembly (6) is provided with a movable member (61). The movable member (61) is movably arranged between the first end support assembly (51) and the second end support assembly (52), and the movable member (61) is slidably sleeved on the preform (7). A side plate (62) is respectively arranged on both sides of the movable member (61). Each side plate (62) is fixedly connected to the movable support (3). The movable member (61) is movably connected to the two side plates (62).

3. The pickling support for the finished optical fiber preform according to claim 2, wherein, the movable member (61) is provided with a plurality of sliding sleeves (611). The plurality of sliding sleeves (611) are integral parts. The number of the sliding sleeves (611) is equal to the number of the support units (5). Each sliding sleeve (611) is correspondingly located between the first end support assembly (51) and the second end support assembly (52) of each support unit (5). Both ends of the movable member (61) are movably connected to the corresponding sides. The inner diameter of each sliding sleeve (611) is larger than the diameter of the preform (7). And an annular sponge (612) is fixedly arranged in each sliding sleeve (611). When the preform (7) passes through the sliding sleeve (611), the surface of the sponge (612) is in contact with the preform (7).

4. The pickling support for the finished optical fiber preform according to claim 2, wherein, a track groove (621) for the movement of the movable member (61) is formed on each side plate (62). The track groove (621) is formed from the first end support assembly (51) to the second end support assembly (52) in a direction from high to low. A roller (63) is rotatably arranged in the track groove (621) of each side plate (62). The movable member (61) is arranged between the two rollers (63). And both ends of the movable member (61) and the corresponding rollers (63) are coaxially connected through a rotating shaft (631).

5. The pickling support for the finished optical fiber preform according to claim 1, wherein, The shaft connecting parts (5111) of all the supporting units (5) and the first shaft connecting seat (512) are connected by a rotating shaft (513). The shaft connecting parts (5111) on each end sleeve (511) are fixedly connected to the rotating shaft (513). Both ends of the rotating shaft (513) are rotatably connected to a second shaft connecting seat (514). Each second shaft connecting seat (514) is fixedly arranged on the movable bracket (3). And a torsion spring (5131) sleeved on the rotating shaft (513) is fixedly connected between each second shaft connecting seat (514) and the rotating shaft (513). When no preform rod (7) is provided in the end sleeve (511), the opening of the end sleeve (511) is in an upward state.

6. The pickling bracket for the finished optical fiber rod according to claim 1, characterized in that, The outer side of the limiting semi-ring (522) has a closed end. A pressing rod (5221) is movably inserted on the closed end. The pressing rod (5221) is coaxial with the limiting semi-ring (522). The end of the pressing rod (5221) facing the limiting semi-ring (522) is round-headed. The other end of the pressing rod (5221) has an anti-detachment end with a diameter larger than that of the pressing rod (5221). And a buffer spring (5222) sleeved on the pressing rod (5221) is fixedly connected between the anti-detachment end and the closed end of the limiting semi-ring (522).

7. The pickling bracket for the finished optical fiber rod according to claim 1, characterized in that, A connecting plate (5231) is drivingly connected to the linear driver (523). Each limiting semi-ring (522) is fixedly connected to the connecting plate (5231).

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