Sensing optical cable tight wrapping production device

Abstract

The invention relates to the technical field of optical cable production, in particular to a sensing optical cable tight wrapping production device. The optical fiber unwinding device comprises a box body, a plurality of guide wheels are rotationally arranged at the position, close to the bottom side, in the box body, an unwinding wheel assembly used for unwinding optical fibers is arranged at the position, close to one side, of the top of the box body, and an external platform is fixed to the side, away from an unwinding wheel body, of the box body. When the optical fiber on the unreeling wheel body is unreeled, the clamping mechanism clamps and fixes the optical fiber, then the two chains drive the clamping mechanism and the optical fiber to operate, and when the two chains drive the clamping mechanism to rotate to the position below the UV lamp, the optical fiber between the clamping mechanism and the UV lamp is kept in a vertical state. Therefore, the UV curing resin coated on the surface of the optical fiber is kept uniform, a low-quality tight wrapping part near one end, close to the unwinding wheel body, of the optical fiber is avoided, the overall tight wrapping quality of the optical fiber is improved, and the tensile strength of an optical cable made of the optical fiber is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical cable production, and in particular to a sensor optical cable tight-wrapped production device. Background Art

[0002] Optical cable is a cable core composed of one or more optical fibers in a certain way, which is covered with a sheath and some are also covered with an outer sheath. The process of tight-wrapping optical cables is to wrap the outer layer of the optical fiber with a layer of tight buffer material to improve the mechanical strength and bending resistance of the optical fiber. It is often used for indoor wiring or internal connection of equipment. In the optical fiber manufacturing process, the optical fiber after drawing and initial coating usually needs to be temporarily reeled on the unwinding wheel for storage, transportation and subsequent tight-wrapping processing. The tight-wrapping process of the optical fiber needs to be carried out on an independent device. The reeled optical fiber can be transported to the tight-wrapping production line and released from the reel by the pay-off device for tight-wrapping processing. After completion, it is reeled again. This design avoids the complexity of the continuous production line and reduces the risk of equipment failure. The typical process of the optical fiber tight-wrapping process is to first remove dust and impurities on the surface of the optical fiber, and then coat the protective layer on the surface of the optical fiber for the second time to protect the primary coating layer and the optical fiber core from damage by high temperature and mechanical stress, improve the overall durability and reliability of the optical fiber, and then send the optical fiber into the interior of the high-temperature extruder for tight-wrapping to make an optical cable.

[0003] An industrial method for coating a protective layer on the surface of an optical fiber is the immersion method. The core principle is to immerse the optical fiber in a liquid coating material and use the viscosity of the material and the pulling speed to control the uniformity of the coating. It should be noted that the optical fiber must be pulled out of the liquid coating material in a vertical posture, otherwise the coating material will accumulate on one side of the optical fiber due to gravity and become thinner on the other side, resulting in uneven thickness. After the liquid coating material is evenly coated on the surface of the optical fiber, the liquid coating material on the surface of the optical fiber is cured using UV curing or thermal curing according to the properties of the material. In the prior art, when a protective layer is coated on the surface of an optical fiber by immersion, an immersion box is usually arranged between the optical fiber unwinding wheel and the high-temperature extruder, and a liquid coating material is filled inside the immersion box. The liquid coating material can be a UV curing resin that remains liquid at room temperature. At the same time, a number of guide wheels are arranged inside and around the box. The guide wheels guide the optical fiber to be immersed in the liquid coating material inside the immersion box in a tight state, and guide the optical fiber to be pulled out of the liquid coating material in a vertical posture by the high-temperature extruder, thereby ensuring the coating quality of the liquid coating material on the surface of the optical fiber. However, when the optical fiber on the unwinding wheel is separated from the unwinding wheel due to the completion of unwinding, The optical fiber will lose its taut state and slide into the immersion box under the action of gravity, and the optical fiber will lose contact with several guide wheels. When the high-temperature extruder pulls the optical fiber in this state, the optical fiber loses the constraint of the guide wheels and cannot be pulled out of the liquid coating material in a vertical posture, resulting in uneven thickness of the liquid coating material on the surface of the optical fiber. The optical fiber with uneven coating has uneven heat conduction inside the high-temperature extruder. The thin coating area is prone to microcracks due to thermal shock, and the thick coating area is prone to resin degradation due to local overheating, resulting in an increase in defects such as bubbles and cracks on the surface of the optical fiber, reducing the tensile strength of the optical cable made of the optical fiber. Summary of the invention

[0004] The purpose of the present invention is to provide a sensor optical cable tight-wrapped production device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, a sensor optical cable tight-wrapped production device is provided, including a box body, wherein a plurality of guide wheels are rotatably arranged at a position near the bottom side of the box body, a reel assembly for reeling in optical fiber is arranged at a position near one side of the top of the box body, an external platform is fixed on a side of the box body away from the reel body, a high-temperature extruder is fixedly installed on the upper side wall of the external platform, and a reversing wheel is rotatably arranged on the upper side wall of the external platform, one end of the optical fiber extends to the inside of the high-temperature extruder after bypassing a plurality of guide wheels and the reversing wheel, and a conveying mechanism is arranged on opposite sides of the box body, the conveying mechanism is used to drive a plurality of guide wheels to move along a U-shaped track, a clamping mechanism is arranged between the two conveying mechanisms, the clamping mechanism is located between the reel assembly and the guide wheel closest to the reel assembly, and the optical fiber passes through the inside of the clamping mechanism, when the optical fiber is unwound from the reel body, the clamping mechanism clamps and fixes the optical fiber, and the conveying mechanism drives the clamping mechanism and the optical fiber to move along the U-shaped track toward the direction close to the high-temperature extruder.

[0006] As a further improvement of the present technical solution, the conveying mechanism includes four sprockets rotatably arranged on the inner wall of the box body near the four corners, the four sprockets are transmission-connected with the same chain, one of the sprockets is provided with a conveying motor for driving the sprocket to rotate, and the conveying motor is fixedly mounted on the outer wall of the box body.

[0007] As a further improvement of the technical solution, a plurality of cross bars are horizontally arranged between the two chains, the two ends of the cross bars are respectively fixed on the chain plates of the two chains, and the plurality of guide wheels are respectively rotatably arranged on the corresponding cross bars.

[0008] As a further improvement of the present technical solution, a support frame fixed on a box body is provided on the lower side of the unwinding wheel assembly, the unwinding wheel assembly includes a U-shaped frame fixed on the upper side wall of the support frame, an unwinding wheel body is rotatably provided on the upper end of the U-shaped frame, the optical fiber is wound on the unwinding wheel body, and a driving assembly for driving the unwinding wheel body to rotate is provided on the box body, and when the driving assembly drives the unwinding wheel body to rotate, the unwinding wheel body unwinds the optical fiber.

[0009] As a further improvement of the present technical solution, the unwinding wheel assembly also includes two moving blocks respectively arranged on both sides of the U-shaped frame, and lifting assemblies are arranged on both sides of the U-shaped frame. When the unwinding wheel body rotates, the lifting assemblies drive the corresponding moving blocks to move vertically.

[0010] As a further improvement of the present technical solution, the clamping mechanism includes two mounting plates respectively fixed on one side of the two chains close to each other, a limit rod is fixedly arranged between the two mounting plates at a position close to the unwinding wheel assembly, an auxiliary wheel is coaxially arranged at the middle position of the limit rod for rotation, a movable beam is slidingly arranged between the two mounting plates, two C-shaped frames are symmetrically fixed on the side of the movable beam close to the limit rod, the inner wall of the C-shaped frame is in sliding contact with the circumferential side wall of the limit rod, a spring is fixed between the circumferential side wall of the limit rod and the inner wall of the C-shaped frame, the spring drives the movable beam close to the limit rod, a clamping block is fixed at a position corresponding to the auxiliary wheel on the side of the movable beam close to the limit rod, and the clamping block clamps and fixes the unwound optical fiber when it is close to the auxiliary wheel.

[0011] As a further improvement of the technical solution, the optical fiber passes through the position between the auxiliary wheel and the clamping block, and the optical fiber contacts the side wall of the auxiliary wheel. The two movable blocks are fixedly provided with the same connecting frame on one side close to the box body, and two trapezoidal blocks are symmetrically fixedly provided on the side of the connecting frame close to the box body.

[0012] As a further improvement of the present technical solution, when the unwinding wheel body unwinds the optical fiber, one end of the two C-shaped frames close to the unwinding wheel body respectively contacts one side of the two trapezoidal blocks close to the clamping mechanism, and the trapezoidal blocks block the C-shaped frames from approaching the unwinding wheel body, and the clamping blocks do not contact the optical fiber. When the optical fiber is unwound from the unwinding wheel body, the C-shaped frame disengages from the side of the corresponding trapezoidal block close to the clamping mechanism, and the spring pulls the movable beam close to the limit rod, so that the clamping blocks and the auxiliary wheels cooperate to clamp and fix the optical fiber.

[0013] As a further improvement of the present technical solution, the lifting assembly includes two side plates fixed up and down on the side of the U-shaped frame away from the unwinding wheel body, a screw rod is arranged between the two side plates for vertical rotation, the moving block is threadedly connected to the screw rod, two guide rods are symmetrically fixed vertically between the two side plates, and the moving block is slidably sleeved on the two guide rods.

[0014] As a further improvement of the present technical solution, the lifting assembly also includes an active bevel gear which is arranged on the side of the U-shaped frame away from the unwinding wheel body through a rotating shaft, the upper end of the screw rod rotates through the side plate located above and is coaxially fixed with a driven bevel gear, the active bevel gear is meshed with the driven bevel gear, the other end of the active bevel gear shaft rotates through the side wall of the U-shaped frame and is coaxially fixed with a transmission gear, a fixed gear is coaxially fixed on one side of the unwinding wheel body, and the fixed gear is meshed with the transmission gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the sensor optical cable tight-wrapping production device, after the optical fiber on the unwinding wheel body is unwound, the clamping mechanism clamps and fixes the optical fiber, and then two chains drive the clamping mechanism and the optical fiber to operate. When the two chains drive the clamping mechanism to rotate to the bottom of the UV lamp, the optical fiber between the clamping mechanism and the UV lamp remains in a vertical state, so that the UV curing resin coated on the surface of the optical fiber remains uniform, avoiding the occurrence of a low-quality tight-wrapped part near one end of the optical fiber close to the unwinding wheel body, improving the overall tight-wrapping quality of the optical fiber, and then improving the tensile strength of the optical cable made of the optical fiber.

[0017] 2. In the sensor optical cable tight-wrapping production device, during the process of the unwinding wheel body unwinding the optical fiber, the connecting frame drives the trapezoidal block to move upward synchronously, so that the position of the trapezoidal block contacting the C-frame continues to change. When the part of the optical fiber wound on the unwinding wheel body is less than one circle, the C-frame is disengaged from the side of the corresponding trapezoidal block close to the clamping mechanism, and the spring pulls the movable beam close to the limit rod, so that the clamping block and the auxiliary wheel cooperate to clamp and fix the optical fiber, so that after the optical fiber on the unwinding wheel body is unwound, the clamping mechanism can clamp and fix the optical fiber in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is one of the partial structural schematic diagrams of the present invention;

[0020] Figure 3 One of the cross-sectional views of a part of the structure of the present invention;

[0021] Figure 4 The second cross-sectional view of a part of the structure of the present invention;

[0022] Figure 5 This is the second schematic diagram of the partial structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the overall structure of the unwinding wheel assembly of the present invention;

[0024] Figure 7 This is one of the partial structural schematic diagrams of the unwinding wheel assembly of the present invention;

[0025] Figure 8 This is the second partial structural schematic diagram of the unwinding wheel assembly of the present invention;

[0026] Fig. 9 The third schematic diagram of the partial structure of the unwinding wheel assembly of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the vertical drum and the cleaning towel of the present invention;

[0028] Fig.11 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0029] Fig.12 It is a cross-sectional view of the clamping mechanism of the present invention.

[0030] The meaning of each number in the figure is:

[0031] 1. Box body; 11. Support frame; 12. Limit frame; 13. Square lock sleeve; 131. Baffle; 14. Unwinding motor;

[0032] 2. External platform; 21. Reversing wheel;

[0033] 3. High temperature extruder;

[0034] 4. Conveying mechanism; 41. Sprocket; 42. Chain; 43. Conveying motor;

[0035] 5. Unwinding wheel assembly; 51. U-shaped frame; 52. Unwinding wheel body; 53. Block; 54. Moving block; 541. Connecting frame; 542. Trapezoidal block; 543. Vertical cylinder; 5431. Through slot; 5432. Cleaning towel;

[0036] 55, lifting assembly; 551, side plate; 552, guide rod; 553, screw rod; 554, driven bevel gear; 555, driving bevel gear; 556, transmission gear; 557, fixed gear;

[0037] 6. Optical fiber; 7. UV light;

[0038] 8. Crossbar; 81. Guide wheel;

[0039] 9. Clamping mechanism; 91. Mounting plate; 92. Movable beam; 93. C-frame; 94. Limit rod; 95. Auxiliary wheel; 96. Spring; 97. Clamping block. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] Example 1

[0043] See also Figure 1-Figure 12 As shown, a sensor optical cable tight-wrapped production device is provided, including a box body 1, and a conveying mechanism 4 is arranged on opposite sides of the box body 1. The conveying mechanism 4 includes four sprocket wheels 41 rotatably arranged on the inner wall of the box body 1 near the four corners, and the four sprocket wheels 41 are transmission-connected with the same chain 42. The conveying mechanism 4 also includes a conveying motor 43 fixedly installed on the outer wall of the box body 1, and the output shaft of the conveying motor 43 is coaxially fixedly connected to one of the sprocket wheels 41. The conveying motor 43 is a servo motor electrically connected to an external control device. When the conveying motor When 43 is in a power-off state, the output shaft of the conveying motor 43 will not rotate, and the output shaft of the conveying motor 43 prevents the corresponding sprocket 41 from rotating. Therefore, the conveying motor 43 in the power-off state has a braking effect on the chain 42. A plurality of cross bars 8 are horizontally arranged between the two chains 42. The two ends of the cross bar 8 are respectively fixed on the chain plates of the two chains 42. A guide wheel 81 is coaxially rotated at the middle position of the cross bar 8. By controlling the operation of the two chains 42, the stability of the position of the plurality of guide wheels 81 inside the box body 1 is guaranteed.

[0044] A support frame 11 is fixedly arranged on one side of the box body 1 away from the high-temperature extruder 3, and a limit frame 12 is fixedly arranged on the upper side wall of the support frame 11. A reel assembly 5 for reeling the optical fiber 6 is arranged at a position near one side of the top of the box body 1. The structure of the reel assembly 5 is detailed below, with reference to Figure 6 and Figure 7The unwinding wheel assembly 5 includes a U-shaped frame 51 fixed to the upper side wall of the support frame 11, and an unwinding wheel body 52 is rotatably arranged on the upper end of the U-shaped frame 51. The optical fiber 6 is wound on the unwinding wheel body 52. ​​The unwinding wheel assembly 5 also includes a limit frame 12 fixed to the upper side wall of the support frame 11. The limit frame 12 and the U-shaped frame 51 are fixedly connected, and the limit frame 12 prevents the U-shaped frame 51 from moving horizontally, thereby improving the stability of the U-shaped frame 51. The unwinding wheel body 52 is rotatably arranged inside the U-shaped frame 51, and the two ends of the unwinding wheel body 52 respectively rotate through the two sides of the U-shaped frame 51 and are coaxially fixed with blocks 53. A driving assembly for driving the unwinding wheel body 52 to rotate is provided on the box body 1. When the driving assembly drives the unwinding wheel body 52 to rotate, the unwinding wheel body 52 unwinds the optical fiber 6.

[0045] The following is a detailed description of the structure of the drive component. Figure 5 The driving assembly includes two square lock sleeves 13 respectively arranged on both sides of the unwinding wheel body 52, wherein a rewinding motor 14 for driving the square lock sleeve 13 to rotate is fixed on one side of the square lock sleeve 13 away from the unwinding wheel body 52, and the rewinding motor 14 is fixedly installed on the outer wall of the box body 1 through a bracket, and a baffle 131 is hinged at the edge of one side of the square lock sleeve 13, and a card lock is fixed on one side of the baffle 131 away from the hinge of the baffle 131 and the square lock sleeve 13, and the baffle 131 is fixedly connected to the square lock sleeve 13 through the card lock The baffle 131 and the corresponding square locking sleeve 13 surround a square cavity, and the two square blocks 53 are respectively embedded in the two square cavities. When the output shaft of the unwinding motor 14 drives one of the square locking sleeves 13 to rotate, the square locking sleeve 13 drives the corresponding block 53 and the unwinding wheel body 52 to rotate, and the unwinding wheel body 52 drives the other block 53 and the other square locking sleeve 13 to rotate, so that the unwinding wheel body 52 can rotate smoothly inside the U-shaped frame 51, so that the unwinding wheel body 52 can unwind the optical fiber 6 at a uniform speed.

[0046] At the same time, an external platform 2 is fixed on the side of the box body 1 away from the unwinding wheel body 52, and a high-temperature extruder 3 is fixedly installed on the upper side wall of the external platform 2. The high-temperature extruder 3 is a high-temperature extruder 3 with the function of conveying the optical fiber 6. The high-temperature extruder 3 of model DL50-90 can be selected, and a reversing wheel 21 is rotatably arranged on the upper side wall of the external platform 2. During the process of the device tightly wrapping the optical fiber 6, liquid UV curing resin is accumulated inside the box body 1. The UV curing resin is a commonly used liquid protective layer material for the optical fiber 6. Figure 3 and Figure 4One end of the optical fiber 6 passes around a plurality of guide wheels 81 and a reversing wheel 21 and then extends to the interior of the high-temperature extruder 3. An annular groove is provided on the circumferential side walls of the guide wheel 81 and the reversing wheel 21. When the optical fiber 6 passes around the guide wheel 81 and the reversing wheel 21, the position where the optical fiber 6 contacts the guide wheel 81 and the reversing wheel 21 is located inside the annular groove. The annular groove limits the movement along the axial direction of the cross bar 8, thereby limiting the conveying path of the optical fiber 6. At this time, the plurality of guide wheels 81 form a U-shape. The optical fiber 6 located between the two outermost guide wheels 81 is constrained by the guide wheels 81 to form a U-shape and is partially immersed in the interior of the UV curing resin. The liquid level of the UV curing resin is higher than the guide wheel 81 located at a high position. The reversing wheel 21 is located closest to the high-temperature extruder. Above the guide wheel 81 of the outlet machine 3, the optical fiber 6 located between the reversing wheel 21 and the guide wheel 81 closest to the high-temperature extruder 3 is vertically arranged, so that the optical fiber 6 can be pulled out of the UV curing resin in a vertical posture, and at the same time, two UV purple light lamps 7 are fixedly installed on the inner wall of the box body 1 near the top, and the two UV purple light lamps 7 are respectively located on both sides of the vertical section of the optical fiber 6, and the UV purple light lamps 7 are located above the liquid level of the UV curing resin. The ultraviolet light emitted by the UV purple light lamp 7 will not irradiate the UV curing resin accumulated inside the box body 1, so that the UV curing resin inside the box body 1 remains in a liquid state at room temperature. When the liquid UV curing resin adheres to the chain 42 and the sprocket 41, it will not affect the chain transmission between the chain 42 and the sprocket 41.

[0047] During the process of the device performing tight wrapping processing on the optical fiber 6, the unwinding wheel body 52 unwinds the optical fiber 6 at a uniform speed, and the high-temperature extruder 3 synchronously pulls the optical fiber 6 at a uniform speed. The optical fiber 6 between the high-temperature extruder 3 and the unwinding wheel body 52 is kept in a taut state. The optical fiber 6 unwound from the unwinding wheel body 52 is first immersed in the UV curing resin along a U-shaped track under the guidance of a plurality of guide wheels 81, so that the UV curing resin is fully coated on the surface of the optical fiber 6, and then the optical fiber 6 moves vertically toward the direction close to the reversing wheel 21. When the optical fiber 6 is vertically pulled out of the UV fixing resin by the high-temperature extruder 3, the excess UV curing resin on the surface of the optical fiber 6 is evenly refluxed into the UV curing resin inside the box body 1. By pulling the optical fiber 6 out of the UV curing resin in a vertical state, it is possible to avoid the UV curing resin from acting on the optical fiber 6 due to gravity. It accumulates on one side and becomes thinner on the other side of the optical fiber 6, so as to ensure that the thickness of the UV curing resin coated on the surface of the optical fiber 6 is uniform, and then the optical fiber 6 will enter the position between the two UV purple lamps 7, and the two UV purple lamps 7 will fully irradiate the UV curing resin on the surface of the optical fiber 6, so that the UV curing resin on the surface of the optical fiber 6 will solidify quickly, and a protective layer that can isolate high temperature will be formed on the surface of the optical fiber 6. After the optical fiber 6 wrapped with the protective layer bypasses the reversing wheel 21 and enters the interior of the high-temperature extruder 3, the high-temperature extruder 3 melts the tight sleeve material at high temperature and evenly wraps it on the outer layer of the protective layer of the optical fiber 6. After the tight sleeve material of the outer layer of the optical fiber 6 is cooled and solidified, the tight sleeve processing of the optical fiber 6 can be completed. The high-temperature extruder 3 is a mature product available on the market and is commonly used in the tight sleeve process of the optical fiber 6. The detailed structure of the high-temperature extruder 3 is not described in detail here.

[0048] If there are dust impurities on the surface of the optical fiber 6 before the protective layer is applied, it will be difficult for the UV curing resin to evenly adhere to the surface of the optical fiber 6. To solve this problem, refer to Figure 6 , Fig. 9 and Fig.10 The unwinding wheel assembly 5 also includes two moving blocks 54 respectively arranged on both sides of the U-shaped frame 51. Both sides of the U-shaped frame 51 are provided with lifting assemblies 55. When the unwinding wheel body 52 rotates, the lifting assemblies 55 drive the corresponding moving blocks 54 to move vertically. The two moving blocks 54 are fixedly provided with the same connecting frame 541 on one side close to the box body 1. Fig. 9 and Fig.10The unwinding wheel assembly 5 also includes a vertical cylinder 543 fixed vertically in the middle position of the upper side wall of the connecting frame 541. The vertical cylinder 543 is located on the side of the unwinding wheel body 52 close to the box body 1. A through groove 5431 is vertically opened in the middle position on the vertical cylinder 543. The position of the through groove 5431 corresponds to the position of the guide wheel 81. The upper end of the through groove 5431 passes through the upper side wall of the vertical cylinder 543. Cleaning towels 5432 are embedded at the positions on both sides of the through groove 5431 on the bottom side of the interior of the vertical cylinder 543. When the unwinding wheel body 52 unwinds the optical fiber 6, the optical fiber 6 passes through the interior of the through groove 5431. The through groove 5431 guides the optical fiber 6 released from the unwinding wheel body 52, ensuring that the optical fiber 6 can be smoothly inserted into the annular groove on the guide wheel 81, thereby improving the stability of the optical fiber 6 during the coating of the UV curing resin. The two cleaning towels 5432 are in sliding contact with the optical fiber 6 on the sides close to each other. When the high-temperature extruder 3 draws out the optical fiber 6 at a uniform speed and the unwinding wheel body 52 unwinds the optical fiber 6 at a uniform speed, the cleaning towel 5432 wipes off the dust and impurities adhering to the surface of the optical fiber 6, so that the dust and impurities are transferred from the optical fiber 6 to the cleaning towel 5432. At the same time, the two lifting components 55 drive the corresponding moving blocks 54 to move upward synchronously during the process of the unwinding wheel body 52 unwinding the optical fiber 6 at a uniform speed. The two moving blocks 54 drive the connecting frame 541 to move upward, and the upward connecting frame 541 drives the vertical cylinder 543 and the two cleaning towels 5432 to move upward synchronously, so that the position of the cleaning towel 5432 and the optical fiber 6 continues to change, so as to avoid the dust and impurities on the optical fiber 6 from being concentratedly transferred to the local position on the cleaning towel 5432. By continuously updating the position where the cleaning towel 5432 contacts the optical fiber 6, the cleaning effect of the cleaning towel 5432 on the dust and impurities on the surface of the optical fiber 6 can be guaranteed, and the adhesion of the UV curing resin to the surface of the optical fiber 6 can be ensured.

[0049] The structure of the lifting assembly 55 is detailed below. Figure 7 and Figure 8The lifting assembly 55 includes two side plates 551 fixed up and down on the side of the U-shaped frame 51 away from the unwinding wheel body 52, a screw rod 553 is arranged between the two side plates 551 for vertical rotation, and a moving block 54 is threadedly connected to the screw rod 553. Two guide rods 552 are symmetrically fixed vertically between the two side plates 551, and the moving block 54 is slidably sleeved on the two guide rods 552. The upper end of the screw rod 553 rotates through the side plate 551 located above and is coaxially fixed with a driven bevel gear 554. The lifting assembly 55 also includes an active bevel gear 555 arranged on the side of the U-shaped frame 51 away from the unwinding wheel body 52 through a rotating shaft. The active bevel gear 555 is meshed with the driven bevel gear 554. The other end of the rotating shaft of the active bevel gear 555 rotates through the side wall of the U-shaped frame 51 and is coaxially fixed with a transmission gear 556. A fixed gear 557 is coaxially fixed on one side of the U-shaped frame 52, and the fixed gear 557 is meshed with the transmission gear 556. When the unwinding wheel body 52 rotates relative to the U-shaped frame 51, the unwinding wheel body 52 drives the fixed gear 557 to rotate, and the meshing transmission of the fixed gear 557 and the transmission gear 556 causes the transmission gear 556 to drive the active bevel gear 555 to rotate synchronously, and the meshing transmission of the active bevel gear 555 and the driven bevel gear 554 causes the driven bevel gear 554 to drive the screw rod 553 to rotate, and the guide rod 552 prevents the moving block 54 from rotating with the screw rod 553, and then the screw rod 553 and the moving block 54 are threadedly connected, so that the moving block 54 moves up along the axis direction of the guide rod 552, and when the two lifting assemblies 55 drive the corresponding moving blocks 54 to move up synchronously, the two moving blocks 54 drive the connecting frame 541 to move up smoothly.

[0050] When the optical fiber 6 on the unwinding wheel body 52 is separated from the unwinding wheel body 52 due to the completion of unwinding, the optical fiber 6 will lose its taut state and slide down into the interior of the box body 1 under the action of gravity, and the optical fiber 6 will lose contact with the plurality of guide wheels 81. When the high-temperature extruder 3 pulls the optical fiber 6 in this state at a uniform speed, since the optical fiber 6 loses the constraint of the guide wheel 81, when the optical fiber 6 moves to the position between the guide wheel 81 and the reversing wheel 21 closest to the high-temperature extruder 3, it will be difficult for the optical fiber 6 to remain in a vertical state. When the optical fiber 6 is pulled out from the curing resin, the UV curing resin adhered to the surface of the optical fiber 6 will accumulate on one side of the optical fiber 6 due to the effect of gravity, and the UV curing resin on the other side of the optical fiber 6 will become thinner, resulting in uneven thickness of the UV curing resin coating on the surface of the optical fiber 6, causing the high temperature resistance and micro-bending resistance of the optical fiber 6 to decrease, affecting the tight packaging quality of the optical fiber 6 by the high temperature extruder 3. After the high temperature extruder 3 performs the tight packaging process on the optical fiber 6, in order to ensure the tensile strength of the optical cable, the operator needs to cut off and discard the part of the optical fiber 6 with poor tight packaging quality. The length of the optical fiber 6 that needs to be cut off and discarded is Figure 4The length of the middle optical fiber 6 between the unwinding wheel body 52 and the UV lamp 7 is similar, so the length of the optical fiber 6 that needs to be cut and discarded is relatively long, which will cause greater economic losses to the factory.

[0051] To solve the above problem, a clamping mechanism 9 is provided between the two chains 42. The clamping mechanism 9 is located between the unwinding wheel assembly 5 and the guide wheel 81 closest to the unwinding wheel assembly 5, and the optical fiber 6 passes through the inside of the clamping mechanism 9. The structure of the clamping mechanism 9 is detailed below. Fig.11 and Fig.12 The clamping mechanism 9 includes two mounting plates 91 respectively fixed on the sides of the two chains 42 close to each other, that is, a mounting plate 91 is fixed on one chain 42, and the shape of the mounting plate 91 is the same as the chain plate of the chain 42. The mounting plate 91 and the chain plate of the corresponding chain 42 form a cross-shaped structure. A limit rod 94 is fixedly arranged between the two mounting plates 91 near the unwinding wheel body 52, and an auxiliary wheel 95 is coaxially arranged at the middle position of the limit rod 94. The circumferential side wall of the auxiliary wheel 95 is also provided with an annular groove. A movable beam 92 is slidably arranged between the two mounting plates 91, and sliding grooves are arranged at both ends of the movable beam 92. Slide rails are fixed on the sides of the two mounting plates 91 close to each other. The two slide rails are respectively slidably arranged inside the two slide grooves. Two C-shaped frames 93 are symmetrically fixed on one side of the beam 92 close to the limit rod 94. One side of the C-shaped frame 93 is open and the opening of the C-shaped frame 93 faces the limit rod 94. The inner wall of the C-shaped frame 93 is in sliding contact with the circumferential side wall of the limit rod 94. A spring 96 is fixed between the circumferential side wall of the limit rod 94 and the inner wall of the C-shaped frame 93. The spring 96 drives the movable beam 92 to approach the limit rod 94. A clamping block 97 is fixed at a position corresponding to the auxiliary wheel 95 on one side of the movable beam 92 close to the limit rod 94. When the clamping block 97 approaches the auxiliary wheel 95, the unwound optical fiber 6 is clamped and fixed. The optical fiber 6 passes through the position between the auxiliary wheel 95 and the clamping block 97, and the optical fiber 6 contacts the side wall of the auxiliary wheel 95. The contact position between the optical fiber 6 and the auxiliary wheel 95 is located inside the annular groove. Fig. 9 Two trapezoidal blocks 542 are symmetrically fixedly arranged on one side of the connecting frame 541 close to the box body 1. The upper and lower ends of the trapezoidal blocks 542 are both arranged as inclined surfaces facing the C-shaped frame 93. During the process of unwinding the optical fiber 6 by the unwinding wheel body 52, the clamping mechanism 9 will have multiple working states. The different working states of the clamping mechanism 9 are classified and discussed below:

[0052] When the unwinding wheel body 52 unwinds the optical fiber 6, one end of the two C-shaped frames 93 close to the unwinding wheel body 52 contacts the side of the two trapezoidal blocks 542 close to the clamping mechanism 9 respectively, and the trapezoidal blocks 542 push the movable beam 92 and the C-shaped frame 93 away from the limit rod 94, so that the spring 96 is kept in an elastically stretched state, and the clamping block 97 does not contact the optical fiber 6, and the optical fiber 6 can pass between the auxiliary wheel 95 and the clamping block 97, so that the high-temperature extruder 3 can smoothly pull the optical fiber 6, and in the process of the unwinding wheel body 52 rotating to unwind the optical fiber 6, the connecting frame 541 drives the trapezoidal block 542 to move upward synchronously, so that the position where the trapezoidal block 542 contacts the C-shaped frame 93 continues to change;

[0053] When the unwinding wheel body 52 rotates several times so that the portion of the optical fiber 6 wound on the unwinding wheel body 52 is less than one circle, the C-shaped frame 93 is out of contact with the side of the corresponding trapezoidal block 542 close to the clamping mechanism 9, and the C-shaped frame 93 is changed to contact with the inclined surface of the corresponding trapezoidal block 542 located below. In this state, the unwinding wheel body 52 continues to rotate, so that the C-shaped frame 93 moves along the inclined surface of the trapezoidal block 542 located below in the direction close to the unwinding wheel body 52. ​​At this time, the spring 96 will rebound, so that the spring 96 pulls the movable beam 92 close to the limit The rod 94 makes the clamping block 97 slowly approach the auxiliary wheel 95. When the length of the optical fiber 6 between the auxiliary wheel 95 and the unwinding wheel body 52 reaches the shortest, the unwinding wheel body 52 can no longer unwind the optical fiber 6. That is, after the optical fiber 6 is unwound from the unwinding wheel body 52, the clamping block 97 and the auxiliary wheel 95 are in close contact with the opposite sides of the optical fiber 6, that is, the clamping mechanism 9 clamps and fixes the optical fiber 6. At this time, the trapezoidal block 542 moves to the top of the C-shaped frame 93. At the same time, a position electrically connected to the external control device is installed near the top of the inner wall of the box body 1. The position sensor is located at a position corresponding to the position of the vertical cylinder 543. When the connecting frame 541 drives the trapezoidal block 542 to move to the top of the C-shaped frame 93, the connecting frame 541 drives the vertical cylinder 543 to move to a position that can trigger the position sensor. At this time, the upper end of the vertical cylinder 543 triggers the position sensor, and the position sensor sends an electrical signal to the control device. The control device synchronously starts the two conveying motors 43, so that the output shaft of the conveying motor 43 drives the corresponding sprocket 41 to rotate, thereby making the two chains 42 run synchronously, and the chain 42 rotates to move. The moving speed is the same as the moving speed of the optical fiber 6. The two running chains 42 drive the clamping mechanism 9 and several guide wheels 81 to rotate synchronously along the U-shaped trajectory of the lower half of the chain 42. The end of the optical fiber 6 away from the high-temperature extruder 3 is bonded to the unwinding wheel body 52 by adhesive. The clamping force of the clamping block 97 and the auxiliary wheel 95 on the optical fiber 6 is greater than the bonding strength between the optical fiber 6 and the unwinding wheel body 52. ​​When the two running chains 42 drive the clamping mechanism 9 to rotate, the clamping mechanism 9 will tear one end of the optical fiber 6 off the unwinding wheel body 52.

[0054] It should be emphasized that the optical fiber 6 on the unwinding wheel body 52 is wound onto the unwinding wheel body 52 by a winding device in the previous process. The optical fibers 6 wound on the unwinding wheel bodies 52 of the same batch have the same length, and there is a corresponding relationship between the length of the optical fiber 6 and the number of thread turns and the thread pitch on the lead screw 553: the longer the length of the optical fiber 6, the more thread turns on the lead screw 553 and the smaller the thread pitch. When workers are tightly wrapping optical fibers 6 of different lengths in different batches, they can replace the lead screws 553 with different numbers of thread turns and thread pitches, so as to ensure that after the unwinding wheel body 52 rotates several times to unwind the optical fiber 6, the unwinding wheel body 52 drives the lead screw 553 to rotate several times, and the rotating lead screw 553 drives the trapezoidal block 542 to move to the same height through the moving block 54 and the connecting frame 541, so as to ensure that the clamping mechanism 9 can clamp and fix the unwound optical fiber 6 in time.

[0055] During the synchronous operation of the two chains 42 driving the plurality of cross bars 8 and the plurality of guide wheels 81, the cross bar 8 passes through the side of the UV lamp 7 away from the high-temperature extruder 3, and the guide wheel 81 passes between the two UV lamps 7 on the side close to the high-temperature extruder 3. The UV lamp 7 will not block the operation of the cross bar 8 and the guide wheel 81. When the two chains 42 drive the clamping mechanism 9 to rotate to the bottom of the UV lamp 7, the optical fiber 6 between the clamping mechanism 9 and the UV lamp 7 is kept in a vertical state, so that the UV curing resin coated on the surface of the optical fiber 6 is kept uniform. When the clamping mechanism 9 drives the optical fiber 6 to rotate to a position close to the lower side wall of the UV lamp 7, the optical fiber 6 is kept in a vertical state. After the high temperature extruder 3 is placed, the output shafts of the two conveying motors 43 stop rotating under the program control of the external control device, while the high temperature extruder 3 continues to pull the optical fiber 6. The force of the high temperature extruder 3 pulling the optical fiber 6 is greater than the clamping force of the clamp block 97 and the auxiliary wheel 95 on the optical fiber 6. Therefore, the high temperature extruder 3 will forcibly pull the optical fiber 6 out from between the clamp block 97 and the auxiliary wheel 95 until the high temperature extruder 3 completely pulls the optical fiber 6 into its own interior to complete the tight packaging process. By making the chain 42 cooperate with the clamping mechanism 9 to deliver the optical fiber 6, it is possible to avoid the occurrence of a low-quality tight packaging part near one end of the optical fiber 6 close to the unwinding wheel body 52, thereby improving the overall tight packaging quality of the optical fiber 6.

[0056] When the device is in use, the operator installs the unwinding wheel body 52 and the driving component together. At this time, the C-shaped frame 93 contacts the side of the corresponding trapezoidal block 542 close to the clamping mechanism 9. The operator drives the unwinding wheel body 52 to rotate through the driving component. During the process of the unwinding wheel body 52 unwinding the optical fiber 6, the operator first passes one end of the optical fiber 6 through the through groove 5431 and the position between the auxiliary wheel 95 and the clamping block 97, and then passes this end of the optical fiber 6 around a number of guide wheels 81 and the reversing wheel 21 and extends to the interior of the high-temperature extruder 3, so that the part of the optical fiber 6 inside the box body 1 forms a U-shaped structure, and part of the optical fiber 6 is immersed in the UV curing resin inside the box body 1. During the process of the unwinding wheel body 52 unwinding the optical fiber 6 at a uniform speed and the high-temperature extruder 3 synchronously pulling the optical fiber 6 at a uniform speed, the cleaning towel 5432 first cleans the dust and impurities on the surface of the optical fiber 6, and then the UV curing resin is evenly coated on the surface of the optical fiber 6, and the UV ultraviolet lamp 7 then The UV curing resin on the surface of the optical fiber 6 is cured to form a protective layer. After the optical fiber 6 wrapped with the protective layer enters the interior of the high-temperature extruder 3, the high-temperature extruder 3 performs a tight wrapping process on the optical fiber 6, and the tightly wrapped optical fiber 6 is discharged from the discharge port of the high-temperature extruder 3, so as to continuously tightly wrap the optical fiber 6. After the optical fiber 6 on the unwinding wheel body 52 is unwound, the clamping mechanism 9 clamps and fixes the optical fiber 6, and then the two chains 42 in the conveying mechanism 4 drive the clamping mechanism 9 and the optical fiber 6 to operate. The operating speed of the optical fiber 6 is consistent with the speed of the high-temperature extruder 3 pulling the optical fiber 6, so that the optical fiber 6 after leaving the unwinding wheel body 52 is kept in a taut state. When the clamping mechanism 9 moves to a position close to the lower side wall of the UV ultraviolet lamp 7, the UV ultraviolet lamp 7 completely irradiates and cures the UV curing resin coated on the surface of the optical fiber 6. After the high-temperature extruder 3 pulls the optical fiber 6 out of the clamping mechanism 9 and pulls it into its own interior, the tight wrapping process of the optical fiber 6 can be completed.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sensor optical cable tight-wrapped production device, comprising a box (1), wherein a plurality of guide wheels (81) are rotatably arranged at a position near the bottom side of the box (1), a reeling wheel assembly (5) for reeling in an optical fiber (6) is arranged at a position near one side of the top of the box (1), an external platform (2) is fixed on a side of the box (1) away from the reeling wheel body (52), a high-temperature extruder (3) is fixedly mounted on the upper side wall of the external platform (2), and a reversing wheel (21) is rotatably arranged on the upper side wall of the external platform (2), one end of the optical fiber (6) passes around the plurality of guide wheels (81) and the reversing wheel (21) and then extends into the interior of the high-temperature extruder (3), characterized in that: Conveying mechanisms (4) are provided on opposite sides of the box body (1), and the conveying mechanisms (4) are used to drive a plurality of guide wheels (81) to move along a U-shaped track. A clamping mechanism (9) is provided between the two conveying mechanisms (4), and the clamping mechanism (9) is located between the unwinding wheel assembly (5) and the guide wheel (81) closest to the unwinding wheel assembly (5), and the optical fiber (6) passes through the inside of the clamping mechanism (9). After the optical fiber (6) is unwound from the unwinding wheel body (52), the clamping mechanism (9) clamps and fixes the optical fiber (6), and the conveying mechanism (4) drives the clamping mechanism (9) and the optical fiber (6) to move along the U-shaped track toward a direction close to the high-temperature extruder (3).

2. The sensor optical cable tight-wrapped production device according to claim 1 is characterized in that: The conveying mechanism (4) comprises four sprocket wheels (41) rotatably arranged on the inner wall of the box body (1) near the four corners, the four sprocket wheels (41) being transmission-connected with the same chain (42), one of the sprocket wheels (41) being provided with a conveying motor (43) for driving the sprocket wheel (41) to rotate, and the conveying motor (43) being fixedly mounted on the outer wall of the box body (1).

3. The sensor optical cable tight-wrapped production device according to claim 2 is characterized in that: A plurality of cross bars (8) are horizontally arranged between the two chains (42), the two ends of the cross bars (8) are respectively fixedly arranged on the chain plates of the two chains (42), and the plurality of guide wheels (81) are respectively rotatably arranged on the corresponding cross bars (8).

4. The sensor optical cable tight-wrapped production device according to claim 2 is characterized in that: A support frame (11) fixed on the box body (1) is arranged at the lower side of the unwinding wheel assembly (5); the unwinding wheel assembly (5) comprises a U-shaped frame (51) fixed on the upper side wall of the support frame (11); an unwinding wheel body (52) is rotatably arranged at the upper end of the U-shaped frame (51); the optical fiber (6) is wound on the unwinding wheel body (52); a driving assembly for driving the unwinding wheel body (52) to rotate is arranged on the box body (1); when the driving assembly drives the unwinding wheel body (52) to rotate, the unwinding wheel body (52) unwinds the optical fiber (6).

5. The sensor optical cable tight-wrapped production device according to claim 4 is characterized in that: The unwinding wheel assembly (5) further comprises two moving blocks (54) respectively arranged on both sides of the U-shaped frame (51), and a lifting assembly (55) is arranged on both sides of the U-shaped frame (51). When the unwinding wheel body (52) rotates, the lifting assembly (55) drives the corresponding moving block (54) to move vertically.

6. The sensor optical cable tight-wrapped production device according to claim 5 is characterized in that: The clamping mechanism (9) comprises two mounting plates (91) respectively fixed on the sides of the two chains (42) close to each other, a limit rod (94) is fixedly arranged between the two mounting plates (91) at a position close to the unwinding wheel assembly (5), an auxiliary wheel (95) is coaxially rotatably arranged at the middle position of the limit rod (94), a movable beam (92) is slidably arranged between the two mounting plates (91), and two C-shaped frames (93) are symmetrically fixed on one side of the movable beam (92) close to the limit rod (94), The inner wall of the C-shaped frame (93) is in sliding contact with the circumferential side wall of the limiting rod (94); a spring (96) is fixed between the circumferential side wall of the limiting rod (94) and the inner wall of the C-shaped frame (93); the spring (96) drives the movable beam (92) to approach the limiting rod (94); a clamping block (97) is fixed at a position corresponding to the auxiliary wheel (95) on one side of the movable beam (92) close to the limiting rod (94); and the clamping block (97) clamps and fixes the unwinding optical fiber (6) when it approaches the auxiliary wheel (95).

7. The sensor optical cable tight-wrapped production device according to claim 6 is characterized in that: The optical fiber (6) passes through a position between the auxiliary wheel (95) and the clamping block (97), and the optical fiber (6) contacts the side wall of the auxiliary wheel (95); a same connecting frame (541) is fixedly provided on one side of the two moving blocks (54) close to the box body (1); and two trapezoidal blocks (542) are symmetrically fixedly provided on one side of the connecting frame (541) close to the box body (1).

8. The sensor optical cable tight-wrapped production device according to claim 7 is characterized in that: When the unwinding wheel body (52) unwinds the optical fiber (6), one end of the two C-shaped frames (93) close to the unwinding wheel body (52) respectively contacts one side of the two trapezoidal blocks (542) close to the clamping mechanism (9), and the trapezoidal blocks (542) block the C-shaped frames (93) from approaching the unwinding wheel body (52). The clamping blocks (97) do not contact the optical fiber (6). After the optical fiber (6) is unwound from the unwinding wheel body (52), the C-shaped frames (93) are disengaged from the side of the corresponding trapezoidal blocks (542) close to the clamping mechanism (9), and the spring (96) pulls the movable beam (92) close to the limit rod (94), so that the clamping blocks (97) and the auxiliary wheels (95) cooperate to clamp and fix the optical fiber (6).

9. The sensor optical cable tight-wrapped production device according to claim 5, characterized in that: The lifting assembly (55) comprises two side plates (551) fixed up and down on a side of the U-shaped frame (51) away from the unwinding wheel body (52); a screw rod (553) is arranged between the two side plates (551) for vertical rotation; the moving block (54) is threadedly connected to the screw rod (553); two guide rods (552) are symmetrically fixed vertically between the two side plates (551); and the moving block (54) is slidably sleeved on the two guide rods (552).

10. The sensor optical cable tight-wrapped production device according to claim 9, characterized in that: The lifting assembly (55) further comprises a driving bevel gear (555) which is rotatably arranged on a side of the U-shaped frame (51) away from the unwinding wheel body (52) via a rotating shaft; the upper end of the screw rod (553) rotates through the side plate (551) located above and is coaxially fixed with a driven bevel gear (554); the driving bevel gear (555) meshes with the driven bevel gear (554); the other end of the rotating shaft of the driving bevel gear (555) rotates through the side wall of the U-shaped frame (51) and is coaxially fixed with a transmission gear (556); a fixed gear (557) is coaxially fixed on one side of the unwinding wheel body (52); the fixed gear (557) meshes with the transmission gear (556).

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