Coating and coloring integrated optical fiber drawing tower

Abstract

The invention provides a coating and coloring integrated optical fiber drawing tower which comprises a preform clamp, a drawing furnace and a drawing traction device which are arranged on the drawing tower and sequentially arranged from high to low, a coating assembly is arranged below the drawing traction device, and a guide wheel, a tension wheel assembly, a tail end traction device and a winding device are sequentially arranged below the coating assembly. The coating assembly comprises an inner coating device, an outer coating device and a coloring device which are arranged from high to low, curing ovens are arranged below the inner coating device, the outer coating device and the coloring device, and the inner coating device, the outer coating device and the coloring device each comprise an adjusting platform and a coating device arranged on the adjusting platform. The problem that the surface of the optical fiber is easily polluted by impurities when the optical fiber is coated and colored by a traditional fractional step method is solved.

Description

Technical Field

[0001] The present invention relates to the field of on-line fiber coating, and in particular to an optical fiber drawing tower for integrated coating and coloring. Background Art

[0002] The basic structure and functions of an optical fiber include: a core layer mainly for transmitting optical signals; a cladding layer for forming the total reflection condition of the optical fiber; an inner coating layer as a buffer layer with the function of resisting micro-bending loss; and an outer coating layer which is beneficial to the wear resistance of the optical fiber and is conducive to improving the low-temperature performance and bending resistance of the optical fiber. Coloring is to uniformly coat a layer of ink on the surface of the optical fiber for differentiating the optical fibers in a tube bundle.

[0003] In the field of optical fiber manufacturing, traditional optical fiber coating and optical fiber coloring are carried out in two steps, that is, first, an optical fiber with an inner coating layer and an outer coating layer is drawn by a drawing tower. The optical fiber is verified for its strength, geometry, and optical performance through a screening machine and testing equipment. After meeting the product specifications, it is transferred to a coloring machine for coating an ink layer, and finally, the required optical fiber with ink is formed. For the optical fiber with an ink layer manufactured by this two-step method, particles in the air will adhere to the surface of the optical fiber during the processes of screening, testing, and transportation, and then be wrapped into the ink layer, thus affecting the performance of the optical fiber. At the same time, coloring the screened optical fiber will not only cause waste of labor and time costs, but also result in secondary scrapping, reducing the output length of the finished optical fiber. Summary of the Invention

[0004] The present invention provides an optical fiber drawing tower for integrated coating and coloring, which solves the problem that the surface of the optical fiber is easily contaminated by impurities when traditional step-by-step methods are used for optical fiber coating and coloring.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: an optical fiber drawing tower for integrated coating and coloring, including a preform clamp, a drawing furnace, and a wire drawing and traction device arranged on the drawing tower and arranged in sequence from high to low. A coating assembly is arranged below the wire drawing and traction device. A guide wheel, a tension wheel assembly, an end traction device, and a winding device are arranged in sequence below the coating assembly. The coating assembly includes an inner coating device, an outer coating device, and a coloring device arranged from high to low. Curing furnaces are arranged below the inner coating device, the outer coating device, and the coloring device. The inner coating device, the outer coating device, and the coloring device all include an adjustment platform and a coater arranged on the adjustment platform.

[0006] In a preferred solution, the coater includes a base sleeve. An upper sinking cavity is arranged in the base sleeve. A mold body with a cavity is arranged at the upper sinking cavity. The inner cavity of the mold body communicates with the upper sinking cavity. An opening part is arranged at the upper end of the mold body. A through hole is arranged at the lower end of the mold body. A first through hole is arranged on the side wall of the upper sinking cavity.

[0007] In a preferred embodiment, an upper top core is provided at the upper end of the base sleeve. An avoidance through hole is provided at the center of the upper top core. The lower end of the upper top core is inserted into the opening portion. A plurality of second through holes are provided on the side wall of the inner cavity of the mold body, and the second through holes communicate with the upper sunken cavity.

[0008] In a preferred embodiment, a positive pressure protection cover is provided at the upper end of the upper top core. An optical fiber inlet hole is provided at the center of the upper end of the positive pressure protection cover. The optical fiber inlet hole is coaxially aligned with the opening portion. A first positive pressure air inlet hole is provided on the side wall of the positive pressure protection cover.

[0009] In a preferred embodiment, a partition cover is further provided at the upper end of the upper top core inside the positive pressure protection cover. A first air vent hole is provided at the center of the partition cover. The diameter of the first air vent hole is smaller than that of the optical fiber inlet hole. A second positive pressure air inlet hole is further provided on the side wall of the positive pressure protection cover. The second positive pressure air inlet hole communicates with the avoidance through hole of the upper top core, and the diameter of the second positive pressure air inlet hole is larger than that of the first positive pressure air inlet hole.

[0010] In a preferred embodiment, a small sunken hole section and a large sunken hole section are sequentially provided above the avoidance through hole. A floating cylinder that can move up and down is provided in the small sunken hole section. The floating cylinder is vertically through. A plurality of ventilation holes are provided on the side wall of the floating cylinder along the circumferential direction. A conductive ring plate is provided at the upper end of the floating cylinder. Two electrode plates are provided at the lower end of the partition cover. The conductive ring plate abuts against the lower end of the partition cover to conduct the two electrode plates.

[0011] In a preferred embodiment, a plurality of second air vent holes are provided along the circumferential direction outside the first air vent hole. The floating cylinder abuts against the partition cover to block the second air vent holes.

[0012] In a preferred embodiment, the adjustment platform includes a two-way displacement table. A horizontal adjustment table is provided on the two-way displacement table. The two-way displacement table includes a base connection seat and a first translation plate. A first sliding card slot is provided at the lower end of the first translation plate. The first sliding card slot is slidably connected to the base connection seat. A second sliding card slot is provided on the first translation plate. A slidable second translation plate is provided in the second sliding card slot. The moving directions of the first translation plate and the second translation plate are perpendicular. The horizontal adjustment table includes a first swing table and a second swing table. The second swing table is used to connect with the coater. One end of the first swing table is hinged to the second translation plate. The second swing table is hinged to the first swing table. The axis of the hinge shaft of the first swing table is perpendicular to the axis of the hinge shaft of the second swing table. The two-way displacement table, the first translation plate, the second translation plate, the first swing table, and the second swing table are all provided with U-shaped groove structures with openings facing the same side.

[0013] In a preferred embodiment, a first stop screw is provided at the end of the first swing table away from the hinge shaft. The first stop screw is threadedly connected to the first swing table and its end passes through the first swing table to abut against the second translation plate. A second stop screw is provided at the end of the second swing table away from the hinge shaft. The second stop screw is threadedly connected to the second swing table and its end passes through the second swing table to abut against the first swing table.

[0014] In a preferred embodiment, a hinge ear seat is provided on the second translation plate, and a rotating sleeve portion is provided on the first swing table. The rotating sleeve portion includes a first sliding card slot and a threaded section, and a tightening screw is also provided. The hinge ear seat and the rotating sleeve portion are provided with a light hole portion. A threaded hole is provided at the bottom end of the light hole portion of the rotating sleeve portion. The optical axis section of the tightening screw is inserted into the light hole portions of the hinge ear seat and the rotating sleeve portion, and the threaded section of the tightening screw is sleeved with the threaded hole of the rotating sleeve portion.

[0015] The beneficial effects of the present invention are as follows: Integrating the coloring mechanism into the coating area of the wire drawing tower and using the same coater for coloring the inner and outer coating layers makes the process more mature and reliable, and the operation is the same and more convenient; Only by appropriately modifying the original wire drawing tower can the production requirements be met, with lower costs and no additional floor space occupied; Simplifying the steps of optical fiber manufacturing and optical fiber coloring reduces related costs and improves production efficiency; The position and inclination of the coater can be adjusted through the adjustment platform to ensure coaxiality with the optical fiber; The positive pressure protection cover adopts a double-layer cavity, increasing the positive pressure dust-proof effect; A floating cylinder with a conductive trigger mechanism is provided in the inner cavity of the upper core to prevent the coating material from overflowing from the coater due to excessive coating supply pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 It is a distribution diagram of the coating and coloring equipment on the wire drawing tower.

[0018] Figure 2 It is a schematic diagram of the coater and the adjustment platform.

[0019] Figure 3 It is a cross-sectional view of the coater and the positive pressure protection cover.

[0020] Figure 4 It is a cross-sectional view of the coater.

[0021] Figure 5 It is a structural diagram of the adjustment platform.

[0022] Figure 6 It is a schematic diagram of the two-way displacement table structure of the adjustment platform.

[0023] Figure 7 It is a front cross-sectional view of the adjustment platform.

[0024] Figure 8 It is a side cross-sectional view of the adjustment platform.

[0025] Figure 9 It is a schematic diagram of the optimized structure of the positive pressure protection cover.

[0026] Figure 10 It is an enlarged schematic diagram of the double positive pressure cavity.

[0027] Figure 11It is a positive pressure anti-blocking structure diagram.

[0028] Figure 12 It is a top view of the structure related to the partition cover.

[0029] Figure 13 It is a bottom view of the structure related to the partition cover.

[0030] In the figure: coater 1; mold body 101; through hole 102; shell sleeve 103; base sleeve 104; annular sinking groove 105; feed hole 106; first through hole 107; upper sinking cavity 108; opening part 109; upper core 110; lower core 111; avoidance through hole 112; lower sinking cavity 113; stop cap 114; second through hole 115; positioning hole 116; large sinking hole section 117; small sinking hole section 118; adjustment platform 2; two-way displacement table 201; horizontal adjustment table 202; base connection seat 203; first translation plate 204; second translation plate 205; first sliding card slot 206; U-shaped groove structure 207; second sliding card slot 208; first swing table 209; second swing table 210; articulated ear seat 211; rotating sleeve part 212; tightening screw 213; optical hole part 214; threaded hole 215; optical axis section 216; threaded section 217; first stop screw 218; second stop screw 219; locking screw 220; positive pressure protection cover 3; optical fiber inlet hole 301; first positive pressure air inlet hole 302; partition cover 303; first air vent hole 304; second positive pressure air inlet hole 305; float 306; ventilation hole 307; conductive ring plate 308; electrode plate 309; second air vent hole 310; bypass air duct 311; movable plug 312; retaining spring 313; sliding hole 314; set screw 315; air inlet duct 316; wire drawing tower 4; inner coating device 5; outer coating device 6; coloring device 7; curing furnace 8; diameter measuring instrument 9; laminar flow air supply device 10; preform clamp 11; wire drawing furnace 12; wire drawing and traction device 13; guide wheel 14; tension wheel assembly 15; end traction device 16; winding device 17; annealing tube 18; cooling tube 19. Detailed implementation manners

[0031] As Figures 1-13 shown in, an optical fiber wire drawing tower with integrated coating and coloring includes a preform clamp 11, a wire drawing furnace 12, and a wire drawing and traction device 13 arranged on the wire drawing tower 4 in sequence from high to low. A coating assembly is provided below the wire drawing and traction device 13. Below the coating assembly, a guide wheel 14, a tension wheel assembly 15, an end traction device 16, and a winding device 17 are arranged in sequence. The coating assembly includes an inner coating device 5, an outer coating device 6, and a coloring device 7 arranged from high to low. Below the inner coating device 5, the outer coating device 6, and the coloring device 7, a curing furnace 8 is provided. The inner coating device 5, the outer coating device 6, and the coloring device 7 each include an adjustment platform 2 and a coater 1 arranged on the adjustment platform 2.

[0032] According to requirements, an annealing tube 18 and a cooling tube 19 can also be provided below the drawing furnace 12. According to requirements, a cooling tube 19 can also be provided below the curing furnace of some coating devices.

[0033] The optical fiber preform is melted in the drawing furnace 12 and is drawn downward by the traction force of the wire drawing and traction device 13. After being coated, colored and cured, it is turned by the guide wheel 14 and is finally wound on the fiber optic disc of the winding device 17 under the traction of the end traction device 16.

[0034] In a preferred solution, the coater 1 includes a base sleeve 104. An upper sunken cavity 108 is provided in the base sleeve 104. A die body 101 with a cavity is provided at the upper sunken cavity 108. The inner cavity of the die body 101 communicates with the upper sunken cavity 108. An opening 109 is provided at the upper end of the die body 101. A through hole 102 is provided at the lower end of the die body 101. A first through hole 107 is provided on the side wall of the upper sunken cavity 108.

[0035] A shell sleeve 103 is sleeved outside the base sleeve 104. An annular sunken groove 105 is provided on the outer wall of the base sleeve 104. A feed hole 106 is provided on the outer wall of the shell sleeve 103. The feed hole 106 and the first through hole 107 communicate with the annular sunken groove 105 respectively.

[0036] A plurality of first through holes 107 can be provided along the circumferential direction.

[0037] After the paint or ink with a set pressure enters the inner cavity of the die body 101, it adheres to the outer wall of the passing optical fiber. The inner diameter of the through hole 102 is slightly larger than the diameter of the optical fiber. Since the paint or ink has a relatively high viscosity, it is difficult to overflow from the clamping cavity between the through hole 102 and the optical fiber. The paint or ink can be continuously stored in the inner cavity of the die body 101, so that the outer wall of the passing optical fiber can contact the paint.

[0038] The paint or ink contains glue. After the optical fiber passes through the coating or coloring device, it needs to pass through the curing furnace 8. The coating layer is solidified by heating and ultraviolet light irradiation. A diameter measuring instrument 9 is also provided below each curing furnace 8. The diameter of the optical fiber in two orthogonal directions is measured online by laser detection.

[0039] In a preferred solution, an upper core 110 is provided at the upper end of the base sleeve 104. An avoidance through hole 112 is provided in the center of the upper core 110. The lower end of the upper core 110 is inserted into the opening 109. A plurality of second through holes 115 are provided on the side wall of the inner cavity of the die body 101. The second through holes 115 communicate with the upper sunken cavity 108.

[0040] A stop cap 114 is provided at the lower end of the mold body 101, a sinking cavity 113 is further provided in the base sleeve 104, a positioning hole 116 is provided between the upper sinking cavity 108 and the lower sinking cavity 113, the mold body 101 is inserted from the lower sinking cavity 113 and passes through the positioning hole 116 so that the opening 109 is placed in the upper sinking cavity 108, a lower top core 111 is provided in the sinking cavity 113 at the lower end of the base sleeve 104, and the lower top core 111 abuts against the lower end of the stop cap 114. An avoidance through hole is also provided in the center of the lower top core 111.

[0041] The avoidance through hole 112 of the upper top core 110 is coaxially aligned with the opening 109 of the mold body 101 , and the avoidance through hole 112 of the lower top core 111 is coaxially aligned with the through hole 102 . The avoidance through hole 112 is used for the optical fiber to pass through.

[0042] The lower top core 111 is threadedly sleeved with the side wall of the lower sinking cavity 113 , and the upper top core 110 is threadedly connected with the inner wall of the upper sinking cavity 108 .

[0043] A through positioning hole 116 is provided on the wall between the upper sinking cavity 108 and the lower sinking cavity 113 for inserting and installing the mold body 101 .

[0044] The outer wall of the shell 103 may be provided with a flange structure for easy installation.

[0045] In the non-working state, the lower top core 111 can be rotated from below and quickly removed, the mold body 101 can be pulled out and replaced, and the internal flow channel can be cleaned, and the residual liquid can be discharged from the sinking cavity 113.

[0046] Since the diameter of the through hole 102 is close to the diameter of the optical fiber, and there is a certain height difference between the upper fiber inlet and the lower fiber outlet of the coater 1, the horizontal position and pitch angle of the coater 1 must be adjusted to prevent the optical fiber from having an angle or interference with the hole wall, resulting in uneven coating.

[0047] In the preferred embodiment, a positive pressure protective cover 3 is provided at the upper end of the upper core 110, a fiber optic inlet hole 301 is provided at the center of the upper end of the positive pressure protective cover 3, the fiber optic inlet hole 301 is coaxially aligned with the opening 109, and a first positive pressure air inlet hole 302 is provided on the side wall of the positive pressure protective cover 3.

[0048] The opening 109 of the mold body 101 , the through hole 102 and the optical fiber entrance hole 301 are coaxially aligned.

[0049] The optical fiber passes through the optical fiber inlet hole 301 , passes through the upper opening 109 of the mold body 101 and the inner cavity of the mold body 101 , and then passes through the through hole 102 .

[0050] Clean positive pressure gas enters from the first positive pressure gas inlet hole 302. Since the coating at the end close to the coater 1 blocks the cavity between the through hole 102 and the optical fiber, it is a closed end. The gas overflows upward from the mold body 101 to prevent dust and other impurities from entering.

[0051] The wire drawing tower 4 is generally located in a Class 100 clean room, and a downward laminar air supply device 10 is provided at the upper end, which can ensure the unidirectional flow of air, avoid the deposition of particles caused by eddy currents, and improve the cleanliness of the coating and coloring environment.

[0052] The clean gas is introduced through the first positive pressure air inlet hole 302. Since the coating at one end close to the coater 1 blocks the clamping cavity between the through hole 102 and the optical fiber, which is a closed end, the gas overflows upward from the mold body 101, preventing dust and other impurities from entering.

[0053] In a preferred solution, a partition cover 303 is further provided at the upper end of the upper top core 110 in the positive pressure protection cover 3. A first air vent hole 304 is provided at the center of the partition cover 303. The diameter of the first air vent hole 304 is smaller than that of the optical fiber inlet hole 301. A second positive pressure air inlet hole 305 is further provided on the side wall of the positive pressure protection cover 3. The second positive pressure air inlet hole 305 is communicated with the avoidance through hole 112 of the upper top core 110. The diameter of the second positive pressure air inlet hole 305 is larger than that of the first positive pressure air inlet hole 302.

[0054] The first air vent hole 304 is coaxial with the first positive pressure air inlet hole 302, and the diameter of the first air vent hole 304 is larger than the diameter of the optical fiber.

[0055] The partition cover 303 divides the internal space of the positive pressure protection cover 3 into upper and lower parts. The positive pressure gas enters the first positive pressure air inlet hole 302 and the second positive pressure air inlet hole 305 through the same pipeline at the same time. Since the diameter of the second positive pressure air inlet hole 305 is larger than that of the first positive pressure air inlet hole 302, and the diameter of the first air vent hole 304 is smaller than that of the optical fiber inlet hole 301, the air pressure in the space below the partition cover 303 is greater than the air pressure in the space above the partition cover 303, forming an air pressure gradient in the positive pressure protection cover 3. The positive pressure is greater closer to the cavity of the mold body 101, forming a double positive pressure dust prevention. And the small aperture of the first air vent hole 304 is also less likely to allow dust to enter.

[0056] Moreover, due to the strong positive pressure air pressure below the partition cover 303, it has a certain obstructive effect on the coating overflowing upward from the avoidance through hole 112. Therefore, the feeding pressure in the mold body 101 can be appropriately increased, which can improve the adhesion and coating efficiency. At the same time, if there are bubbles mixed in the coating, they can be quickly extruded.

[0057] In a preferred solution, a small counterbore section 118 and a large counterbore section 117 are sequentially provided above the avoidance through hole 112. A floating cylinder 306 that can move up and down is provided in the small counterbore section 118. The floating cylinder 306 is vertically through. A plurality of vent holes 307 are provided on the side wall of the floating cylinder 306 along the circumferential direction. A conductive ring piece 308 is provided at the upper end of the floating cylinder 306. Two electrode pieces 309 are provided at the lower end of the partition cover 303. The conductive ring piece 308 abuts against the lower end of the partition cover 303 to conduct the two electrode pieces 309.

[0058] Since the diameter of the avoidance through-hole 112 is larger than that of the through-hole 102, if the feeding pressure suddenly increases, the coating material in the mold body 101 will overflow from the avoidance through-hole 112 into the small sunken hole section 118. The floating cylinder 306 is made of a low-density material and moves upward under the action of buoyancy. When the floating cylinder 306 reaches the partition cover 303, the two electrode plates 309 are conducted through the conductive ring plate 308. Each electrode plate 309 extends a wire to the outside and is connected to a signal sensor. After detecting the conduction signal, the feeding system reduces the feeding pressure. Therefore, it can play the role of end pressure feedback and insurance.

[0059] In a preferred solution, a plurality of second air vent holes 310 are provided along the circumferential direction on the outside of the first air vent hole 304, and the floating cylinder 306 abuts against the partition cover 303 to block the second air vent holes 310.

[0060] The total cross-sectional area of the first air vent hole 304 plus the second air vent holes 310 is smaller than the cross-sectional area of the optical fiber inlet hole 301. When the coating material overflows and causes the floating cylinder 306 to block the second air vent holes 310, the air pressure in the cavity below the partition cover 303 further increases, counteracting the feeding pressure, reducing the pressure difference, and slowing down the overflow rate.

[0061] On the side of the first positive pressure air inlet hole 302 away from the inside of the positive pressure protection cover 3, an air inlet passage 316 is further provided. A bypass air passage 311 is also provided on the side wall of the positive pressure protection cover 3. One end of the bypass air passage 311 communicates with the air inlet passage 316, and the other end of the bypass air passage 311 communicates with the space above the partition cover 303. A sliding hole 314 is provided in the positive pressure protection cover 3, and a movable plug 312 is provided in the sliding hole 314. One end of the movable plug 312 is provided with a retaining spring 313, and the other end of the movable plug 312 blocks the bypass air passage 311.

[0062] After the floating cylinder 306 reaches the partition cover 303, if the coating material continues to overflow and blocks the vent hole 307 or the second positive pressure air inlet hole 305, at this time, since the aperture of the first positive pressure air inlet hole 302 is small, the amount of air entering the space above the partition cover 303 is too small, and the positive pressure protection effect is weakened. At this time, the pressure at the air inlet passage 316 increases and pushes up the movable plug 312 and compresses the top screw 315, so that the bypass air passage 311 communicates the air inlet passage 316 and the space above the partition cover 303, the total cross-sectional area of the air passage increases, and the positive pressure protection effect is restored.

[0063] Since the diameter of the through-hole 102 is relatively close to the diameter of the optical fiber, and there is a certain height difference between the upper optical fiber inlet and the lower optical fiber outlet of the coater 1, therefore, it is necessary to adjust the horizontal position and pitch angle of the coater 1 to prevent the optical fiber from forming an angle or interference with the hole wall, resulting in uneven coating.

[0064] In a preferred embodiment, the adjustment platform 2 includes a two-way displacement stage 201. A horizontal adjustment stage 202 is provided on the two-way displacement stage 201. The two-way displacement stage 201 includes a base connection seat 203 and a first translation plate 204. A first sliding card slot 206 is provided at the lower end of the first translation plate 204. The first sliding card slot 206 is slidably connected to the base connection seat 203. A second sliding card slot 208 is provided on the first translation plate 204. A slidable second translation plate 205 is provided in the second sliding card slot 208. The moving directions of the first translation plate 204 and the second translation plate 205 are perpendicular to each other. The horizontal adjustment stage 202 includes a first swing stage 209 and a second swing stage 210. The second swing stage 210 is used to connect with the coater 1. One end of the first swing stage 209 is hinged to the second translation plate 205. The second swing stage 210 is hinged to the first swing stage 209. The axis of the hinge shaft of the first swing stage 209 is perpendicular to the axis of the hinge shaft of the second swing stage 210. The two-way displacement stage 201, the first translation plate 204, the second translation plate 205, the first swing stage 209 and the second swing stage 210 are all provided with U-shaped groove structures 207 with openings facing the same side.

[0065] One end of the U-shaped groove structure 207 with an opening does not face the wire drawing tower 4, which is convenient for installing the coater 1.

[0066] To prevent interference, the width and depth of the U-shaped groove structure 207 are larger at the lower end. The U-shaped groove structure 207 of the second swing stage 210 is the smallest. The shell sleeve 103 of the coater 1 is snapped into the U-shaped groove structure 207. The flange structure is fixed at the fixing hole on the second swing stage 210.

[0067] In a preferred embodiment, a first stop screw 218 is provided at the end of the first swing stage 209 away from the hinge shaft. The first stop screw 218 is threadedly connected to the first swing stage 209 and its end passes through the first swing stage 209 to abut against the second translation plate 205. A second stop screw 219 is provided at the end of the second swing stage 210 away from the hinge shaft. The second stop screw 219 is threadedly connected to the second swing stage 210 and its end passes through the second swing stage 210 to abut against the first swing stage 209.

[0068] The first stop screw 218 and the second stop screw 219 cannot be located on the axis of their respective hinge shafts.

[0069] Rotating the first stop screw 218 can adjust the front and rear angles of the first swing stage 209. Rotating the second stop screw 219 can adjust the left and right angles of the second swing stage 210. Therefore, the coater 1 installed on the second swing stage 210 can adjust the horizontal angle.

[0070] In a preferred embodiment, a hinge ear seat 211 is provided on the second translation plate 205, and a rotating sleeve portion 212 is provided on the first swing table 209. The rotating sleeve portion 212 includes a first sliding card slot 206 and a threaded section 217. A tightening screw 213 is also provided. The hinge ear seat 211 and the rotating sleeve portion 212 are provided with a light hole portion 214. A threaded hole 215 is provided at the bottom end of the light hole portion 214 of the rotating sleeve portion 212. The optical axis section 216 of the tightening screw 213 is inserted into the light hole portions 214 of the hinge ear seat 211 and the rotating sleeve portion 212, and the threaded section 217 of the tightening screw 213 is sleeved with the threaded hole 215 of the rotating sleeve portion 212.

[0071] The tightening screw 213 not only plays a positioning role. Tightening the tightening screw 213 can increase the pressure between the hinge ear seat 211 and the rotating sleeve portion 212 and increase the friction force, thereby locking the angle of the first swing table 209.

[0072] The hinge shaft structure of the second swing table 210 is similar to that of the first swing table 209, and its position is at the bottom end of its U-shaped groove structure 207.

[0073] Threaded locking screws 220 are also provided on the side walls of the first sliding card slot 206 and the second sliding card slot 208. One end of each locking screw 220 abuts against its respective sliding surface, and the horizontal positions of the first translation plate 204 and the second translation plate 205 can be locked.

[0074] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A fiber drawing tower with integrated coating and coloring, characterized by: The invention comprises a preform rod clamp (11), a wire drawing furnace (12) and a wire drawing traction device (13) which are arranged on a wire drawing tower (4) and arranged in descending order. A coating assembly is arranged below the wire drawing traction device (13). A guide wheel (14), a tension wheel assembly (15), an end traction device (16) and a winding device (17) are arranged below the coating assembly in descending order. The coating assembly comprises an inner coating device (5), an outer coating device (6) and a coloring device (7) which are arranged in descending order. A curing furnace (8) is arranged below the inner coating device (5), the outer coating device (6) and the coloring device (7). The inner coating device (5), the outer coating device (6) and the coloring device (7) all comprise an adjustment platform (2) and a coater (1) arranged on the adjustment platform (2).

2. The optical fiber drawing tower with integrated coating and coloring according to claim 1, characterized in that: The coater (1) comprises a base sleeve (104), an upper sinking cavity (108) is provided in the base sleeve (104), a mold body (101) with a cavity is provided at the upper sinking cavity (108), the inner cavity of the mold body (101) is connected to the upper sinking cavity (108), an opening (109) is provided at the upper end of the mold body (101), a through hole (102) is provided at the lower end of the mold body (101), and a first through hole (107) is provided on the side wall of the upper sinking cavity (108).

3. The optical fiber drawing tower with integrated coating and coloring according to claim 2, characterized in that: An upper core (110) is provided at the upper end of the base sleeve (104), an avoidance through hole (112) is provided at the center of the upper core (110), the lower end of the upper core (110) is inserted into the opening (109), a plurality of second through holes (115) are provided on the inner cavity side wall of the mold body (101), and the second through holes (115) are connected to the upper sink cavity (108).

4. The optical fiber drawing tower with integrated coating and coloring according to claim 3, characterized in that: A positive pressure protective cover (3) is provided at the upper end of the upper core (110), a fiber optic inlet hole (301) is provided at the center of the upper end of the positive pressure protective cover (3), the fiber optic inlet hole (301) is coaxially aligned with the opening (109), and a first positive pressure air inlet hole (302) is provided on the side wall of the positive pressure protective cover (3).

5. The optical fiber drawing tower with integrated coating and coloring according to claim 4, characterized in that: A partition cover (303) is also provided at the upper end of the upper core (110) in the positive pressure protective cover (3), a first air leakage hole (304) is provided in the center of the partition cover (303), the diameter of the first air leakage hole (304) is smaller than the optical fiber inlet hole (301), and a second positive pressure air inlet hole (305) is also provided on the side wall of the positive pressure protective cover (3), the second positive pressure air inlet hole (305) is connected to the avoidance through hole (112) of the upper core (110), and the diameter of the second positive pressure air inlet hole (305) is larger than the diameter of the first positive pressure air inlet hole (302).

6. The optical fiber drawing tower with integrated coating and coloring according to claim 5, characterized in that: A small sink hole section (118) and a large sink hole section (117) are sequentially arranged above the avoidance through hole (112); a buoy (306) movable up and down is arranged in the small sink hole section (118); the buoy (306) is connected up and down; a plurality of vent holes (307) are arranged on the side wall of the buoy (306) along the circumferential direction; a conductive ring sheet (308) is arranged at the upper end of the buoy (306); two electrode sheets (309) are arranged at the lower end of the partition cover (303); the conductive ring sheet (308) is abutted against the lower end of the partition cover (303) to enable the two electrode sheets (309) to be conductive.

7. The optical fiber drawing tower with integrated coating and coloring according to claim 6, characterized in that: A plurality of second air leakage holes (310) are arranged along the circumferential direction outside the first air leakage hole (304), and the float (306) abuts against the partition cover (303) to block the second air leakage holes (310).

8. The optical fiber drawing tower with integrated coating and coloring according to claim 1, characterized in that: The adjustment platform (2) comprises a bidirectional displacement platform (201), a horizontal adjustment platform (202) is provided on the bidirectional displacement platform (201), the bidirectional displacement platform (201) comprises a base connection seat (203) and a first translation plate (204), a first sliding slot (206) is provided at the lower end of the first translation plate (204), the first sliding slot (206) is slidably connected to the base connection seat (203), a second sliding slot (208) is provided on the first translation plate (204), a slidable second translation plate (205) is provided in the second sliding slot (208), the moving directions of the first translation plate (204) and the second translation plate (205) are perpendicular, and the horizontal adjustment platform (202) is provided on the bidirectional displacement platform (201), and the horizontal adjustment platform (202) is provided on the bidirectional displacement platform (201). The leveling platform (202) comprises a first swinging platform (209) and a second swinging platform (210); the second swinging platform (210) is used to connect to the coater (1); one end of the first swinging platform (209) is hinged to the second translation plate (205); the second swinging platform (210) is hinged to the first swinging platform (209); the hinge axis of the first swinging platform (209) is perpendicular to the hinge axis of the second swinging platform (210); and the two-way displacement platform (201), the first translation plate (204), the second translation plate (205), the first swinging platform (209) and the second swinging platform (210) are all provided with a U-shaped groove structure (207) with an opening facing the same side.

9. The optical fiber drawing tower with integrated coating and coloring according to claim 7, characterized in that: A first stop screw (218) is provided at one end of the first swing table (209) away from the hinge axis, the first stop screw (218) is threadedly connected to the first swing table (209) and the end thereof passes through the first swing table (209) to abut against the second translation plate (205), and a second stop screw (219) is provided at one end of the second swing table (210) away from the hinge axis, the second stop screw (219) is threadedly connected to the second swing table (210) and the end thereof passes through the second swing table (210) to abut against the first swing table (209).

10. The optical fiber drawing tower with integrated coating and coloring according to claim 9, characterized in that: The second translation plate (205) is provided with a hinged ear seat (211), the first swinging platform (209) is provided with a rotating sleeve portion (212), the rotating sleeve portion (212) comprises a first sliding slot (206) and a threaded section (217), and is further provided with a tightening screw (213), the hinged ear seat (211) and the rotating sleeve portion (212) are provided with a light hole portion (214), the bottom end of the light hole portion (214) of the rotating sleeve portion (212) is provided with a threaded hole (215), the light axis section (216) of the tightening screw (213) is inserted into the light hole portion (214) of the hinged ear seat (211) and the rotating sleeve portion (212), and the threaded section (217) of the tightening screw (213) is sleeved with the threaded hole (215) of the rotating sleeve portion (212).

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