Optical fiber adsorption fixing device

Abstract

The present application relates to the technical field of optical communication devices, and provides an optical fiber adsorption fixing device.The optical fiber adsorption fixing device comprises an optical fiber rotating mechanism, a clamping arm assembly and a vacuum adsorption unit; the vacuum adsorption unit is arranged on the clamping arm assembly; the vacuum adsorption unit comprises a vacuum sealed cavity, the vacuum sealed cavity is located in the clamping arm assembly, and the clamping arm assembly is fixedly connected with the optical fiber rotating mechanism; the optical fiber rotating mechanism comprises a rotating knob, a fixed block and a fiber pressing block; the rotating knob is located at the tail of the optical fiber rotating mechanism; the fiber pressing block is arranged on the fixed block and used for fixing an optical fiber; the rotating knob is fixedly connected with the fixed block, and the rotating knob drives the fixed block to rotate.The optical fiber adsorption fixing device has the advantages of simple structure, small size, and the problems of the prior optical fiber clamping device, such as inability to adjust the angle and easy damage to the optical fiber, are overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical communication devices, in particular to an optical fiber adsorption fixing device. BACKGROUND

[0002] In the field of optical device research and production, certain types of optical device product related processes, such as optical fiber bare fiber incoming inspection process, chip packaging test process, coupling, curing and other processes, need to clamp and fix the optical fiber bare fiber in a small space and achieve a certain angle of rotation adjustment.

[0003] In the prior art, optical fiber clamping devices can generally be divided into the following types:

[0004] 1. Mechanical clamping device: the mechanical clamping device clamps the optical fiber by mechanical means, such as clamps, clips or clamping pliers, etc. This device is simple to use and has low cost. However, mechanical clamping may cause small scratches or stress concentration on the surface of the optical fiber, which may have a negative impact on the transmission performance of the optical fiber.

[0005] 2. Pressure clamping device: the pressure clamping device uses pressure to fix the optical fiber in the desired position. This device usually includes clamping blocks, gaskets and threaded or clamping devices. The pressure clamping device provides a more uniform clamping force distribution, reducing the risk of damage to the optical fiber. However, improper design or application of excessive pressure may cause deformation or damage to the optical fiber.

[0006] 3. Adhesive clamping device: the adhesive clamping device uses adhesive or glue to fix the optical fiber in place. This device provides reliable fixing performance and less damage to the optical fiber. However, the use of adhesives may require additional operating steps, and is not reversible, making it more difficult to replace or adjust the position of the optical fiber.

[0007] These optical fiber clamping devices all have some common defects: improper design or application of the clamping device may cause scratches, wear or stress concentration on the surface of the optical fiber, thereby reducing the transmission performance of the optical fiber; due to the difference in thermal expansion coefficient between the optical fiber and the clamping device, temperature changes may cause stress changes between the optical fiber and the clamping device, thereby affecting the performance of the optical fiber; the installation and adjustment of some clamping devices may be relatively complex, requiring professional knowledge and experience; some clamping devices may be sensitive to external vibration, shock or mechanical impact, which may cause the optical fiber to loosen or detach from the clamping device; some clamping devices may not be able to conveniently adjust the position or angle of the optical fiber, limiting the flexibility of the optical fiber system.

[0008] In addition, the optical fiber clamping devices on the market have complex structures, large device sizes, high prices and are not easy to maintain, and have low cost performance. The integration of optical devices or modules is becoming higher and higher, which objectively leads to limited operation space, and the existing devices are difficult to meet the requirements.

[0009] Therefore, overcoming the defects of the prior art is an urgent problem to be solved in the technical field. SUMMARY

[0010] The technical problem to be solved by the present application is that the existing optical fiber clamping device has a complex structure, a large device size, and may damage the optical fiber during clamping.

[0011] The embodiment of the present application adopts the following technical scheme:

[0012] The present application provides an optical fiber adsorption fixing device, comprising: an optical fiber rotating mechanism 1, a clamping arm assembly 2 and a vacuum adsorption unit 3;

[0013] The vacuum adsorption unit 3 is arranged on the clamping arm assembly 2, and the vacuum adsorption unit 3 comprises a vacuum sealed cavity 30, which is located in the clamping arm assembly 2, and the clamping arm assembly 2 is fixedly connected with the optical fiber rotating mechanism 1.

[0014] The optical fiber rotating mechanism 1 comprises a rotating knob 10, a fixed block 11 and a fiber pressing block 12, the rotating knob 10 is located at the tail of the optical fiber rotating mechanism 1, the fiber pressing block 12 is arranged on the fixed block 11 and used for fixing the optical fiber 5, the rotating knob 10 is fixedly connected with the fixed block 11, and the rotating knob 10 drives the fixed block 11 to rotate.

[0015] Preferably, the optical fiber adsorption fixing device further comprises an optical fiber clamping assembly 4, the vacuum adsorption unit 3 is arranged between the optical fiber rotating mechanism 1 and the optical fiber clamping assembly 4, and the optical fiber rotating mechanism 1, the vacuum adsorption unit 3 and the optical fiber clamping assembly 4 cooperate to fix the optical fiber 5.

[0016] The clamping arm assembly 2 is provided with a clamping groove 20, and the optical fiber clamping assembly 4 is clamped in the clamping groove 20 and fixedly connected with the clamping arm assembly 2.

[0017] Preferably, the optical fiber clamping assembly 4 comprises an optical fiber chuck shell 41, a push rod 42 and a pressing plate 44.

[0018] The pressing plate 44 comprises a clamping part 440 and a positioning part 441, the positioning part 441 is close to the lower end of the optical fiber chuck shell 41, is inserted into the optical fiber chuck shell 41 and forms a rotating shaft structure with a pin shaft 410 on the optical fiber chuck shell 41.

[0019] The positioning part 441 is inserted into one end of the fiber holder shell 41 and coupled with one end of the push rod 42 located in the fiber holder shell 41, so that the positioning part 441 is rotated by a small angle around the pin shaft 410 by the up and down pushing of the push rod 42.

[0020] The inside of the fiber holder shell 41 is in a cylindrical hollow form, and the push rod 42 is in sliding connection with the fiber holder shell 41, and when the push rod 42 slides upward, the clamping part 440 abuts against the fiber holder shell 41 to clamp the optical fiber 5.

[0021] Preferably, the positioning part 441 is inserted into one end of the fiber holder shell 41 and coupled with one end of the push rod 42 located in the fiber holder shell 41, specifically, the end of the push rod 42 has a small-diameter shaft segment 420, and the positioning part 441 of the pressing plate 44 is provided with a first groove 4410, and the small-diameter shaft segment 420 is clamped in the first groove 4410.

[0022] Preferably, the fiber clamping device further comprises a spring 43, which is arranged in one of the following ways: surrounding the push rod 42 or abutting against the lower end of the push rod 42, for lifting the push rod 42.

[0023] Preferably, the clamping arm assembly 2 is provided with a pressing plate 21 and a plate seat 22, the length of the pressing plate 21 is greater than the length of the plate seat 22, and the pressing plate 21 is arranged above the push rod 42.

[0024] The pressing plate 21 is provided with a first magnet 210, and the plate seat 22 is provided with a second magnet 220, when the first magnet 210 and the second magnet 220 are attracted to each other, the pressing plate 21 applies pressure to the push rod 42.

[0025] Preferably, the fiber rotating mechanism 1 further comprises a fixed support 13, the fixed support 13 is sleeved on the fixed block 11, and the fixed support 13 is provided with a first locking screw 130 for locking the fixed block 11.

[0026] Preferably, the fiber pressing block 12 is provided with a second locking screw 120, the second locking screw 120 cooperates with the fiber pressing block 12 to fix the optical fiber 5 on the fixed block 11.

[0027] The second locking screw 120 is connected with the fixed block 11 in one of the following ways: threaded connection or magnetic attraction.

[0028] When the second locking screw 120 is connected with the fixed block 11 in a magnetic adsorption manner, the second locking screw 120 is made of martensite steel, and a cylindrical magnet 111 corresponding to the second locking screw 120 is arranged below the fixed block 11.

[0029] Preferably, the vacuum adsorption unit 3 comprises a joint 31 and a fiber suction nozzle 32, and the vacuum sealed cavity 30 is arranged between the joint 31 and the fiber suction nozzle 32.

[0030] The joint 31 is arranged at the top of the vacuum adsorption unit 3, and the joint 31 circumscribes a vacuum generating assembly, and the fiber suction nozzle 32 is arranged below the vacuum adsorption unit 3, and the lower end of the fiber suction nozzle 32 adsorbs the optical fiber 5.

[0031] Preferably, the bottom of the optical fiber rotating mechanism 1 is provided with a bottom plate 14, the fixed support 13 of the optical fiber rotating mechanism 1 is fixed on one side of the upper surface of the bottom plate 14, and the clamping arm assembly 2 is fixed on the other side of the upper surface of the bottom plate 14.

[0032] Compared with the prior art, the beneficial effects of the present application are that the optical fiber rotating mechanism 1 arranged in the present application can adjust the angle of the optical fiber by 360°, improving the flexibility of the device, and the vacuum adsorption unit 3 arranged in the present application can fix the optical fiber in an adsorbed manner, effectively avoiding the deformation and damage of the optical fiber. And the device provided by the present application has simple structure and small size, effectively overcoming the problems of complex structure and large size of the existing optical fiber clamping device. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0034] Figure 1 is a whole structure schematic view of an optical fiber adsorption fixing device provided by embodiment 1 of the present application;

[0035] Figure 2 is a schematic view of a clamping arm assembly of an optical fiber adsorption fixing device provided by embodiment 1 of the present application;

[0036] Figure 3 is a combination schematic view of a clamping arm assembly and an optical fiber clamping assembly of an optical fiber adsorption fixing device provided by embodiment 1 of the present application;

[0037] Figure 4 is a schematic diagram of a fiber rotating mechanism of a fiber adsorption fixing device provided by embodiment 1 of the present application;

[0038] Figure 5 is a schematic diagram of cooperation between a second locking screw and a cylindrical magnet of a fiber adsorption fixing device provided by embodiment 1 of the present application;

[0039] Figure 6 is a schematic diagram of cooperation between a second locking screw and a cylindrical magnet of a fiber adsorption fixing device provided by embodiment 1 of the present application;

[0040] Figure 7 is a sectional view of a vacuum adsorption unit of a fiber adsorption fixing device provided by embodiment 1 of the present application;

[0041] Figure 8 is a schematic diagram of an overall structure of a fiber clamping assembly provided by embodiment 2 of the present application;

[0042] Figure 9 is a schematic diagram of a pressing plate of a fiber clamping assembly provided by embodiment 2 of the present application;

[0043] Figure 10 is a schematic diagram of a second groove of a fiber chuck shell of a fiber clamping assembly provided by embodiment 2 of the present application;

[0044] Figure 11 is a schematic diagram of a push rod of a fiber clamping assembly provided by embodiment 2 of the present application;

[0045] Figure 12 is a schematic diagram of a first accommodating groove of a fiber clamping assembly provided by embodiment 2 of the present application;

[0046] Figure 13 is a sectional view of a fiber clamping assembly provided by embodiment 2 of the present application;

[0047] Figure 14 is a schematic diagram of a spring located at a lower end of a push rod of a fiber clamping assembly provided by embodiment 2 of the present application;

[0048] Figure 15 is a schematic diagram of a use flow of a fiber clamping assembly provided by embodiment 2 of the present application;

[0049] Figure 16 is a schematic diagram of a use flow of a fiber clamping assembly provided by embodiment 2 of the present application.

[0050] Among them, the reference signs are:

[0051] 1-fiber rotating mechanism, 10-rotating knob, 11-fixed block, 110-first accommodating groove, 111-cylindrical magnet, 12-fiber pressing block, 120-second locking screw, 13-fixed support, 130-first locking screw, 14-bottom plate, 2-clamping arm assembly, 20-clamping groove, 21-pressing plate, 210-first magnet, 22-plate seat, 220-second magnet, 3-vacuum suction unit, 30-vacuum closed cavity, 31-joint, 32-fiber suction nozzle, 4-fiber clamping assembly, 41-fiber chuck shell, 410-pivot shaft, 411-second accommodating groove, 412-first circular groove, 413-second groove, 414-third through hole, 42-push rod, 420-small-diameter shaft segment, 421-external thread, 43-spring, 44-pressing plate, 440-clamping part, 4400-inclined surface, 441-positioning part, 4410-first groove, 4411-first through hole, 45-pressing head, 450-second circular groove, 451-second through hole, 5-fiber. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0053] In the description of the present application, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings and are only used to facilitate the description of the present application and should not be understood as requiring the present application to be constructed and operated in a particular orientation, therefore should not be understood as limiting the present application.

[0054] In the present application, the terms "first", "second" and the like are only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0055] In the present application, unless otherwise specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, can be detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0056] In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0057] Embodiment 1:

[0058] Embodiment 1 of the present invention provides an optical fiber adsorption and fixing device, such as Figure 1 As shown, it includes: an optical fiber rotation mechanism 1, a clamping arm assembly 2 and a vacuum adsorption unit 3.

[0059] The vacuum adsorption unit 3 is disposed on the clamping arm assembly 2 and includes a vacuum-sealed cavity 30 located within the clamping arm assembly 2. The clamping arm assembly 2 is fixedly connected to the optical fiber rotation mechanism 1. Specifically, a base plate 14 is provided at the bottom of the optical fiber rotation mechanism 1. The fixing bracket 13 of the optical fiber rotation mechanism 1 is fixed to one side of the upper surface of the base plate 14, and the clamping arm assembly 2 is fixed to the other side of the upper surface of the base plate 14. The vacuum adsorption unit 3 is used to fix the middle section of the optical fiber 5.

[0060] The optical fiber rotation mechanism 1 includes a rotating knob 10, a fixed block 11 and a fiber compression block 12. The rotating knob 10 is located at the tail of the optical fiber rotation mechanism 1, and the fiber compression block 12 is arranged on the fixed block 11 for fixing the optical fiber 5; the rotating knob 10 is fixedly connected to the fixed block 11, and the rotating knob 10 drives the fixed block 11 to rotate.

[0061] Specifically, the rotating knob 10 is provided with a patterned knurling treatment. Rotating the rotating knob 10 can drive the fixed block 11 to rotate, thereby adjusting the angle of the optical fiber 5. The rotating knob 10 and the fixed block 11 are fixedly connected by welding, gluing or threaded connection. The optical fiber rotation mechanism 1 is used to fix the rear section of the optical fiber 5.

[0062] Specifically, the material of the fiber pressing block 12 can be metal or plastic. In a preferred embodiment, the fiber pressing block 12 is made of plastic for the following reasons:

[0063] 1. Lightweight: Plastic materials are lighter than metal materials, so using a fiber compression block 12 made of plastic can reduce the weight of the entire device and reduce the load on the structure during the suspension and installation of the optical fiber clamping assembly 4.

[0064] 2. Non-conductivity: Plastic is an insulating material. In the application of optical fiber 5, it is very important to avoid electromagnetic interference or conductive contact. The fiber compression block 12 made of plastic can provide good electrical insulation performance to ensure stable transmission and signal integrity of optical fiber 5.

[0065] 3. Reduce mechanical stress: Plastic has good elasticity and buffering properties. Compared with hard materials such as metal, the fiber compression block 12 made of plastic can provide better buffering effect during the clamping process, reduce the mechanical stress on the optical fiber 5, help protect the optical fiber 5 from external damage, and increase the service life of the optical fiber 5.

[0066] 4. Corrosion resistance: Some plastic materials have strong corrosion resistance, which can prevent the fiber pressing block 12 from corroding in a humid environment or chemical medium. This is a factor to consider for using the fiber clamping assembly 4 in harsh environments. Using corrosion-resistant plastic to make the fiber pressing block 12 can increase the durability and reliability of the device.

[0067] Secondly, the contact surface of the fiber pressing block 12 with the optical fiber 5 can be flat or arc-shaped. In the preferred embodiment, the contact surface is arc-shaped, for the following reasons:

[0068] 1. Dispersing pressure: The arc-shaped fiber pressing block 12 can provide more uniform pressure distribution. Compared with flat or right-angled fiber pressing blocks 12, the arc-shaped fiber pressing block 12 can better fit the surface of the optical fiber 5 and evenly distribute the pressure, thereby reducing the point pressure and local stress concentration on the optical fiber 5, and reducing the risk of stress damage and breakage of the optical fiber 5.

[0069] 2. Enhancing stability: The arc-shaped fiber pressing block 12 can provide a larger contact area and a tighter contact with the surface of the optical fiber 5, which helps to enhance the clamping force and increase the friction between the optical fiber 5 and the fiber pressing block 12. This increased stability can effectively prevent the displacement or sliding of the optical fiber 5, ensuring the fixation and stable transmission of the optical fiber 5.

[0070] 3. Buffering effect: The arc-shaped fiber pressing block 12 can provide a certain degree of buffering effect during clamping. When external vibration or impact acts on the fiber clamping assembly 4, the arc-shaped fiber pressing block 12 can absorb part of the energy and reduce the impact on the optical fiber 5, helping to protect the optical fiber 5 from mechanical stress and damage, and improving the reliability and service life of the optical fiber 5.

[0071] 4. Reducing damage risk: Since the arc-shaped fiber pressing block 12 has a more uniform contact with the optical fiber 5 without sharp edges or cutting parts, the potential damage risk to the optical fiber 5 during clamping is reduced. This is very important for maintaining the integrity and performance of the optical fiber 5, especially for high-speed data transmission or optical fiber 5 sensing applications.

[0072] The optical fiber rotating mechanism 1 of the embodiment 1 of the present application can adjust the angle of the optical fiber 5 by 360°, improving the flexibility of the device. The vacuum adsorption unit 3 can fix the optical fiber 5 in an adsorbed manner, effectively avoiding deformation and damage of the optical fiber 5. The device provided by the present application has a simple structure and a small size, effectively overcoming the problem of complex structure and large size of the existing fiber clamping assembly 4.

[0073] In order to more completely set forth the scheme of the embodiment of the present application, the details of the structure will be described in detail below.

[0074] In order to fix the optical fiber 5 more stably so that the optical fiber 5 will not fall off during processing, refer to Figure 1 As shown, the optical fiber adsorption and fixing device further includes an optical fiber clamping assembly 4, and the vacuum adsorption unit 3 is arranged between the optical fiber rotation mechanism 1 and the optical fiber clamping assembly 4. The optical fiber rotation mechanism 1, the vacuum adsorption unit 3 and the optical fiber clamping assembly 4 cooperate to fix the optical fiber 5; Figure 2 As shown, the clamping arm assembly 2 is provided with a clamping groove 20, and the optical fiber clamping assembly 4 is clamped in the clamping groove 20 and fixedly connected to the clamping arm assembly 2. Specifically, the optical fiber clamping assembly 4 includes: an optical fiber chuck housing 41, a push rod 42 and a pressure plate 44. A second receiving groove 411 is provided on the outer side of the optical fiber chuck housing 41 at a position corresponding to the pressure plate 44 (refer to Figure 5 As shown), it is used to accommodate the optical fiber 5, and the optical fiber clamping assembly 4 is used to fix the front section of the optical fiber 5.

[0075] In actual use scenarios, the fiber clamping assembly 4 requires the push rod 42 of the fiber clamping assembly 4 to move downward to enable the lower end of the fiber clamping assembly 4 to open and clamp the optical fiber 5. Therefore, Figure 2 As shown, the clamping arm assembly 2 is provided with a pressing plate 21 and a plate seat 22. The length of the pressing plate 21 is greater than the length of the plate seat 22. The pressing plate 21 is provided above the push rod 42. A first magnet 210 is provided on the pressing plate 21, and a second magnet 220 is provided on the plate seat 22. When the first magnet 210 and the second magnet 220 attract each other, the pressing plate 21 applies pressure to the push rod 42. Specifically, as shown in FIG. Figure 3 As shown, the first magnet 210 and the second magnet 220 have opposite polarities and rely on the adsorption force to press down the push rod 42, thereby realizing the downward movement of the push rod 42, driving the opening of the pressure plate 44. The pressure plate 44 opens, releasing the optical fiber 5, and preparing to clamp the optical fiber 5 again; the adsorption force of these two magnets is not large. If it is necessary to release the pressure of the pressing plate 21 on the lower pressure head 45, it is only necessary to turn the pressing plate 21 clockwise to lift the pressing plate 21 upward, which can overcome the adsorption force of the two magnets and release the pressure applied by the pressing plate 21 on the lower pressure head 45.

[0076] In a preferred embodiment, the first magnet 210 on the pressing plate 21 can be an electromagnet, which has magnetism when powered on, the first magnet 210 and the second magnet 220 attract each other, and the pressing plate 21 is pressed down. When the power is turned off, the magnetism is lost, the first magnet 210 and the second magnet 220 separate, and the pressing plate 21 is lifted.

[0077] In order to ensure that the rear section of the optical fiber 5 is clamped more firmly and that the optical fiber rotation mechanism 1 can remain stable after adjusting the angle of the optical fiber 5 , the following structure is added to the optical fiber rotation mechanism 1 .

[0078] As shown in Figure 4 The optical fiber rotating mechanism 1 further comprises a fixed support 13 sleeved on the fixed block 11, and a first locking screw 130 is arranged on the fixed support 13 to lock the fixed block 11. In actual use, after the angle of the fixed block 11 is adjusted by rotating the knob 10, the first locking screw 130 is tightened to fix the angle of the fixed block 11.

[0079] A first accommodating groove 110 is arranged on the surface of the fixed block 11 to accommodate the optical fiber 5. Specifically, the first accommodating groove 110 can have a V-shaped, semicircular, square or other shape. In the preferred embodiment, the first accommodating groove 110 has a V-shaped groove, and the included angle formed by the two sides of the V-shaped groove is 45°. The two V-shaped surfaces are formed by slow wire cutting, and have high surface finish, serving as a limiting surface for the bare fiber of the optical fiber.

[0080] A second locking screw 120 is arranged on the fiber pressing block 12 to cooperate with the fiber pressing block 12 to fix the optical fiber 5 on the fixed block 11. Specifically, the second locking screw 120 is connected with the fixed block 11 in one of the threaded connection or magnetic attraction. Figure 5 and Figure 6 When the second locking screw 120 is connected with the fixed block 11 in the magnetic attraction, the second locking screw 120 is made of martensitic steel, and a cylindrical magnet 111 is arranged below the second locking screw 120 and at the corresponding position of the fixed block 11. Specifically, the corresponding position is one side of the first accommodating groove 110. The martensitic steel adopted by the second locking screw 120 is a kind of steel material processed by quenching and tempering process, which is usually magnetic. Therefore, the second locking screw 120 can be attracted to the cylindrical magnet 111 to fix the fiber pressing block 12 on the fixed block 11.

[0081] In order to better fix the middle section of the optical fiber 5, a vacuum adsorption unit 3 is arranged in the device.

[0082] As shown in Figure 7 The vacuum adsorption unit 3 comprises a connector 31 and an optical fiber suction nozzle 32, and a vacuum sealed cavity 30 is arranged between the connector 31 and the optical fiber suction nozzle 32. The connector 31 is arranged at the top of the vacuum adsorption unit 3, and a vacuum generating assembly is connected with the connector 31. The optical fiber suction nozzle 32 is arranged below the vacuum adsorption unit 3, and the lower end of the optical fiber suction nozzle 32 adsorbs the optical fiber 5. Specifically, the connector 31 is a steerable quick connector 31.

[0083] In actual application scenarios, the external vacuum generating assembly is a vacuum generator or a vacuum pump device, which can generate negative pressure to form a vacuum condition;The joint 31 is used for connecting the vacuum generating assembly and the vacuum sealed cavity 30;The upper part of the vacuum sealed cavity 30 is the joint 31, and the lower part is connected with the optical fiber suction nozzle 32;The upper end of the optical fiber suction nozzle 32 is connected with the vacuum sealed cavity 30 through a sealing thread, and the lower end is a suction nozzle with a specific semicircular notch shape, which can be closely attached and adsorbed with the optical fiber bare fiber without gap, and there is stable negative pressure in the notch of the suction nozzle, so that the middle section of the optical fiber 5 is adsorbed.

[0084] In summary, the use method of the optical fiber adsorption fixing device provided by embodiment 1 of the present application is as follows:

[0085] Place the optical fiber 5 in the first accommodating groove 110 on the surface of the fixed block 11, use the fiber pressing block 12 to attract the cylindrical magnet 111 on the fixed block 11, and fix the rear section of the optical fiber 5 in the first accommodating groove 110;Start the external vacuum generating assembly, align the middle section of the optical fiber 5 with the optical fiber suction nozzle 32 of the optical fiber adsorption device, and fix the middle section of the optical fiber 5 by the vacuum adsorption device;After fixing the middle section and the rear section of the optical fiber 5, power on the first magnet 210 on the pressing plate 21, the first magnet 210 is attracted to the second magnet 220, the push rod 42 is pressed down, the pressing plate 44 of the optical fiber clamping assembly 4 is opened, the front section of the optical fiber 5 is placed in the second accommodating groove 411 of the optical fiber clamping assembly 4, the first magnet 210 is powered off, the first magnet 210 is separated from the second magnet 220, the push rod 42 slides upward, the pressing plate 44 abuts against the optical fiber clamping assembly 4, and the front section of the optical fiber 5 is fixed in the optical fiber clamping assembly 4, and the fixing operation of the optical fiber 5 is completed.

[0086] Rotate the rotating knob 10 of the optical fiber rotating mechanism 1 to adjust the angle of the fixed block 11, so as to drive the optical fiber 5 and adjust the angle of the optical fiber 5, and after rotating to the appropriate angle, lock the first locking screw 130 to fix the fixed block 11, and complete the angle adjustment operation of the optical fiber 5.

[0087] Embodiment 2:

[0088] On the basis of embodiment 1, the optical fiber clamping assembly 4 is added, which cooperates with the optical fiber rotating mechanism 1 and the vacuum adsorption unit 3 to clamp and fix the optical fiber 5.

[0089] The optical fiber clamping assembly 4 provided by embodiment 2 of the present application comprises: Figure 8 As shown in the figure, the optical fiber clamping assembly 4 comprises an optical fiber clamp head housing 41, a push rod 42, a spring 43 and a pressing plate 44.

[0090] As shown in the figure, the optical fiber clamping assembly 4 comprises an optical fiber clamp head housing 41, a push rod 42, a spring 43 and a pressing plate 44. Figure 9As shown, the pressing plate 44 comprises a clamping part 440 and a positioning part 441, which is inserted into the fiber chuck shell 41 and forms a pivot structure with the pin shaft 410 on the fiber chuck shell 41 near the lower end of the fiber chuck shell 41. Specifically, as shown in the figure, Figure 10 As shown, the lower end of the fiber chuck shell 41 is provided with a second groove 413 for accommodating the positioning part 441; the positioning part 441 is provided with a first through hole 4411 between the clamping part 440 and the first groove 4410, the pin shaft 410 is inserted into the first through hole 4411, and the two ends of the pin shaft 410 are connected with the side wall of the second groove 413. In actual application scenarios, the connection mode between the pin shaft 410 and the fiber chuck shell 41 is fixed connection or rotary connection, and in the preferred solution, in order to make the rotation of the pressing plate 44 more sensitive, the connection mode between the pin shaft 410 and the fiber chuck shell 41 is rotary connection, and the pin shaft 410 and the fiber chuck shell 41 are matched with a small amount of interference, and the first through hole 4411 is matched with a small gap.

[0091] The positioning part 441 is inserted into one end of the fiber chuck shell 41 and coupled with one end of the push rod 42 located in the fiber chuck shell 41, so that the positioning part 441 is driven up and down by the push rod 42 to rotate a small angle around the pin shaft 410.

[0092] Specifically, the positioning part 441 is inserted into one end of the fiber chuck shell 41 and coupled with one end of the push rod 42 located in the fiber chuck shell 41, specifically, as shown in the figure, Figure 11 As shown, the push rod 42 has a small-diameter shaft segment 420 at the end, and the positioning part 441 of the pressing plate 44 is provided with a first groove 4410, and the small-diameter shaft segment 420 is clamped in the first groove 4410. In actual processing, the connection mode of the pressing plate 44 and the push rod 42 can be pin shaft 410 connection, welding or bolt connection, as well as the clamping of the small-diameter shaft segment 420 and the first groove 4410. The connection mode of the small-diameter shaft segment 420 and the first groove 4410 is selected, which has the advantages of simple processing mode, no need to consider the symmetry of hole position during processing, and simple and convenient installation mode.

[0093] The spring 43 is located inside the optical fiber chuck shell 41, used to lift the push rod 42, so that the push rod 42 defines the positioning part 441, and the clamping part 440 clamps the optical fiber 5. Specifically, in the actual application scenario, there are many ways to lift the push rod 42, such as magnetic adsorption, mechanical arm lifting, etc., but using magnetic adsorption to lift the push rod 42 is not suitable for processing optical fibers 5 with magnetism, and the magnetic adsorption method is easy to lose magnetism due to magnetic field interference, so that the optical fiber clamping assembly 4 cannot work normally; if the mechanical arm method is used to control the up and down movement of the push rod 42, the volume of the device is too large, and the process is complex, which is not conducive to the miniaturization of the equipment and cost control. Therefore, using the spring 43 as a way to lift the push rod 42 overcomes the above problems, and the spring 43 has high adaptability, small size and low cost.

[0094] The present application can realize the purpose of stable clamping of the optical fiber 5 by applying pressure to the push rod 42 to drive the pressing plate 44 to abut against the optical fiber chuck shell 41; the spring 43 can play a buffering role when pressure is applied to the push rod 42, and can lift the push rod 42 when the pressure on the push rod 42 is removed and the push rod 42 needs to move upward, and the pressing plate 44 abuts against the optical fiber chuck shell 41. The mechanical method is used to clamp and fix the optical fiber 5, which overcomes the problems of large volume, complex structure and unstable clamping of the existing vacuum adsorption type and magnetic adsorption pressing plate 44 type clamping and fixing device.

[0095] The optical fiber clamping assembly 4 provided by the present application meets the requirements of optical device product research and development and production process, has simple and reliable structure, convenient clamping operation, and will not damage the optical fiber 5, and will not affect the subsequent process.

[0096] In order to more completely set forth the scheme of the embodiment of the present application, the details of the structure will be described in detail below.

[0097] In order to make the pressing plate 44 clamp the optical fiber 5 more stably, the outer surface of the optical fiber chuck shell 41 is provided with a second accommodating groove 411, and there is a gap between the pressing plate 44 and the optical fiber 5 chuck body, which is as follows:

[0098] When the vertical surface of the pressing plate 44 is parallel to the vertical surface of the fiber holder shell 41, there is a gap between the inner side of the clamping part 440 and the fiber holder shell 41. Specifically, the gap is between 1 mm and 2 mm. If the vertical surface of the pressing plate 44 is completely attached to the fiber holder shell 41 when it is parallel to the surface of the fiber holder shell 41, the pressing plate 44 and the second accommodating groove 411 cannot stably fix the optical fiber 5 in the second accommodating groove 411 after the optical fiber 5 is placed in the second accommodating groove 411. When there is a gap between the inner side of the clamping part 440 of the pressing plate 44 and the fiber holder shell 41, the top end of the clamping part 440 abuts against the fiber holder shell 41, and the vertical surface thereof forms a certain angle with the surface of the fiber holder shell 41, thereby more firmly fixing the optical fiber 5 in the second accommodating groove 411.

[0099] The side wall of the fiber holder shell 41 near the lower end is provided with a second accommodating groove 411, which accommodates the optical fiber 5. The second accommodating groove 411 has one of a V-shaped, square or semicircular shape. In a preferred embodiment, the second accommodating groove 411 has a V-shaped groove, and the included angle formed by the two sides of the V-shaped groove is 45°. The two V-shaped surfaces are formed by slow wire cutting, and have high surface finish, serving as a limiting surface for the bare fiber of the optical fiber.

[0100] When the second accommodating groove 411 has a V-shaped form, the vertical surface of the clamping part 440 abuts against the fiber holder shell 41, as shown in Figure 12 The angle bisector of the included angle of the two sides of the V-shaped groove is perpendicular to the vertical surface of the clamping part 440. When the angle bisector of the included angle of the two sides of the V-shaped groove is perpendicular to the vertical surface of the clamping part 440, the force exerted by the pressing plate 44 on the optical fiber 5 reaches the maximum, further stably fixing the optical fiber 5 in the second accommodating groove 411.

[0101] In order to more conveniently push the push rod 42, the fiber clamping assembly 4 further comprises a lower pressing head 45, which is fixedly connected with the upper end of the push rod 42. Specifically, the push rod 42 and the lower pressing head 45 are fixedly connected in one of welding, gluing or threaded connection.

[0102] When the push rod 42 and the lower pressing head 45 are connected in threaded connection, as shown in Figure 13 The lower pressing head 45 is provided with a second through hole 451 extending from the upper surface thereof to the lower surface thereof, and the inside of the second through hole 451 is provided with an internal thread. Figure 11As shown, the end of the push rod 42 connected with the lower pressing head 45 is provided with an external thread 421, and the internal thread and the external thread 421 are connected correspondingly. Specifically, the fixed connection is achieved in a threaded manner, facilitating the disassembly and installation between the push rod 42 and the lower pressing head 45. Meanwhile, the design of the lower pressing head 45 also provides convenience for the installation of the spring 43.

[0103] According to the arrangement of the lower pressing head 45, the lower pressing head 45 drives the push rod 42 to slide up and down in the fiber chuck shell 41, and the fiber chuck shell 41 is provided with a third through hole 414 extending from the top to the bottom of the fiber chuck shell 41, and the push rod 42 is in sliding connection with the third through hole 414.

[0104] In order to facilitate the upward lifting of the push rod 42, the device is provided with a spring 43, as shown in Figure 13 and Figure 14 As shown, the spring 43 is a small-diameter spiral spring 43, which is arranged in one of the following ways: surrounding the push rod 42 or abutting against the lower end of the push rod 42.

[0105] When the spring 43 surrounds the push rod 42, the push rod 42 is inserted into the hollow part of the spring 43; the fiber chuck shell 41 is provided with a first circular groove 412 extending from the upper surface to the inside of the fiber chuck shell 41, the first circular groove 412 contains the spring 43, one end of the spring 43 abuts against the bottom of the first circular groove 412; the lower pressing head 45 is provided with a second circular groove 450 extending from the lower surface to the inside of the lower pressing head 45, the second circular groove 450 contains the spring 43, the other end of the spring 43 abuts against the bottom of the second circular groove 450.

[0106] Specifically, the diameters of the first circular groove 412 and the second circular groove 450 are larger than the diameters of the second through hole 451 and the third through hole 414. Therefore, taking the second through hole 451 and the second circular groove 450 as an example, the second through hole 451 extends from the upper surface to the lower surface of the lower pressing head 45, and the second circular groove 450 extends from the lower surface to the inside of the lower pressing head 45. Therefore, the second through hole 451 actually extends from the upper surface of the lower pressing head 45 to the bottom of the second circular groove 450. Since the diameter of the second through hole 451 is smaller than the diameter of the second circular groove 450, a platform is formed at the junction of the two, and the upper end of the spring 43 abuts against the platform. Similarly, the diameter of the third through hole 414 is smaller than the diameter of the first circular groove 412, and a platform is formed at the junction of the two, and the lower end of the spring 43 abuts against the platform.

[0107] In practical application scenarios, the material of the fiber clamp shell 41, the pressing head 45, the push rod 42, and the pressing plate 44 can be one of brass, stainless steel, aluminum alloy, or plastic. After research and in combination with the use scenario, the preferred solution for the material of the pressing plate 44 is brass, for the following reasons:

[0108] 1. The defects of using aluminum alloy are: compared with other metal materials, the strength of aluminum alloy is relatively low, which may not be able to provide sufficient clamping force, resulting in loosening or failure of the optical fiber 5; aluminum alloy is prone to form an oxide layer in the presence of oxygen, which may affect the surface quality of the clamping device and the stability of the optical fiber 5 connection; aluminum alloy may be sensitive to certain chemicals or humidity, leading to corrosion or deterioration, thereby affecting the performance of the optical fiber clamping device.

[0109] 2. The defects of using stainless steel are: stainless steel is relatively hard, which may exert excessive pressure on the optical fiber 5, causing damage or breakage of the optical fiber 5; stainless steel has high thermal conductivity, which may cause the optical fiber 5 to heat up in high-temperature environments, affecting its transmission performance; stainless steel material is heavier, which may increase the burden of installation and carrying.

[0110] 3. The defects of using plastic are: compared with metal materials, the strength of plastic is generally lower, and the optical fiber clamping device needs sufficient strength to maintain the stability and safety of the optical fiber 5. If the plastic clamping part 440 is used, it may not be able to provide sufficient force to firmly clamp the optical fiber 5, resulting in clamping failure or breakage of the optical fiber 5; the thermal expansion coefficient of plastic is generally higher, which means that the plastic clamping part 440 may cause changes in clamping force due to expansion or contraction when the temperature changes, which may cause the position of the optical fiber 5 to shift or loosen, affecting the quality and stability of the transmission of the optical fiber 5; plastic is generally more susceptible to wear and tear than metal materials, and the optical fiber clamping device is in a use environment that may be affected by physical friction or other damage. The plastic clamping part 440 is prone to wear, which may cause the clamping force to weaken or fail, thereby affecting the connectivity and transmission quality of the optical fiber 5; there are chemical substances or humidity in certain environments, which may have a corrosive effect on the plastic clamping part 440. Plastic may become brittle or undergo chemical changes, leading to a decline in the performance of the clamping device and possibly causing damage or breakage of the optical fiber 5; the shape stability of plastic is generally poor and is easily affected by external factors to change shape, which will especially cause the shape of the plastic clamping part 440 to change, making the position of the optical fiber 5 unstable, thereby affecting the accuracy and stability of the transmission of the optical fiber 5.

[0111] Therefore, in summary, using brass as the material of the fiber holder shell 41, the pressing head 45, the push rod 42, and the pressing plate 44 has the following advantages: brass has good mechanical properties, moderate hardness and strength, and can provide stable clamping force. It can provide sufficient clamping force without losing elasticity and deformation, ensuring the stable fixation of the optical fiber 5; brass has good heat conduction performance, which can effectively dissipate heat, which is very important for applications that need to handle high-power optical fibers 5 or work in high-temperature environments, and can prevent problems caused by heating of the optical fiber 5; brass has certain corrosion resistance and can maintain stable performance in most common environmental conditions. It has good resistance to corrosion of general atmospheric environment, humidity and some chemicals; brass is easy to process and manufacture, and can be processed by common processing methods such as milling, cutting and drilling, which makes brass one of the commonly used materials for manufacturing optical fiber clamping devices.

[0112] In general, brass has moderate hardness, strength and heat conduction performance, and good corrosion resistance in optical fiber clamping devices, and is easy to process. These characteristics make brass a reliable choice that can provide stable clamping force and maintain stable performance in various application environments.

[0113] In summary, as shown in Figure 15 and Figure 16 , the method for using the optical fiber clamping assembly 4 provided by the embodiment of the present application is as follows:

[0114] When clamping the optical fiber 5, downward pressure is applied to the push rod 42, which moves downward under the action of the downward pressure, driving the pressing plate 44 to rotate clockwise around the pin shaft 410, and the spring 43 is compressed. The lower end of the clamping portion 440 of the pressing plate 44 is separated from the surface of the fiber holder shell 41.

[0115] Place the optical fiber 5 in the reserved position of the fiber holder shell 41, and release the downward pressure applied to the push rod 42. The push rod 42 moves upward under the upward force of the spring 43, thereby driving the pressing plate 44 to rotate counterclockwise. The clamping portion 440 of the pressing plate 44 abuts against the surface of the fiber holder shell 41, and the optical fiber 5 is clamped and fixed on the device. The reserved position is the second accommodating groove 411.

[0116] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An optical fiber adsorption and fixing device, characterized in that: include: Optical fiber rotation mechanism (1), clamping arm assembly (2) and vacuum adsorption unit (3); The vacuum adsorption unit (3) is arranged on the clamping arm assembly (2), and the vacuum adsorption unit (3) includes a vacuum-sealed cavity (30). The vacuum-sealed cavity (30) is located in the clamping arm assembly (2), and the clamping arm assembly (2) is fixedly connected to the optical fiber rotation mechanism (1); The optical fiber rotation mechanism (1) comprises a rotating knob (10), a fixed block (11) and a fiber pressing block (12); the rotating knob (10) is located at the tail of the optical fiber rotation mechanism (1); the fiber pressing block (12) is arranged on the fixed block (11) and is used to fix the optical fiber (5); the rotating knob (10) is fixedly connected to the fixed block (11); the rotating knob (10) drives the fixed block (11) to rotate; The optical fiber adsorption and fixing device further comprises an optical fiber clamping assembly (4); the vacuum adsorption unit (3) is arranged between the optical fiber rotation mechanism (1) and the optical fiber clamping assembly (4); the optical fiber rotation mechanism (1), the vacuum adsorption unit (3) and the optical fiber clamping assembly (4) cooperate to fix the optical fiber (5); the clamping arm assembly (2) is provided with a clamping groove (20); the optical fiber clamping assembly (4) is clamped in the clamping groove (20) and fixedly connected to the clamping arm assembly (2); The optical fiber clamping assembly (4) comprises: an optical fiber clamp housing (41), a push rod (42) and a pressing plate (44); The pressing plate (44) includes a clamping portion (440) and a positioning portion (441). The positioning portion (441) is close to the lower end of the optical fiber chuck housing (41), inserted into the optical fiber chuck housing (41), and forms a rotating shaft structure with the pin shaft (410) on the optical fiber chuck housing (41); the positioning portion (441) is inserted into one end of the optical fiber chuck housing (41) and coupled with one end of the push rod (42) located in the optical fiber chuck housing (41). The push rod (42) is engaged so that the positioning portion (441) is pushed up and down by the push rod (42) to realize a small angle rotation around the pin shaft (410); the interior of the optical fiber chuck housing (41) is a cylindrical hollow shape, and the push rod (42) is slidably connected to the optical fiber chuck housing (41) inside the optical fiber chuck housing (41); when the push rod (42) slides upward, the clamping portion (440) abuts against the optical fiber chuck housing (41) to clamp the optical fiber (5).

2. The optical fiber adsorption and fixing device according to claim 1, characterized in that: The positioning portion (441) is inserted into one end of the optical fiber chuck housing (41) and coupled with one end of the push rod (42) located inside the optical fiber chuck housing (41). Specifically, the end of the push rod (42) has a small-diameter shaft section (420), and the positioning portion (441) of the pressure plate (44) is provided with a first groove (4410), and the small-diameter shaft section (420) is clamped in the first groove (4410).

3. The optical fiber adsorption and fixing device according to claim 1, characterized in that: The optical fiber adsorption and fixing device further comprises a spring (43), which is arranged in a manner of surrounding the push rod (42) or abutting against the lower end of the push rod (42) for lifting the push rod (42).

4. The optical fiber adsorption and fixing device according to claim 1, characterized in that: The clamping arm assembly (2) is provided with a pressing plate (21) and a plate seat (22), the length of the pressing plate (21) is greater than the length of the plate seat (22), and the pressing plate (21) is provided above the push rod (42); The pressing plate (21) is provided with a first magnet (210), and the plate seat (22) is provided with a second magnet (220). When the first magnet (210) and the second magnet (220) attract each other, the pressing plate (21) applies pressure to the push rod (42).

5. The optical fiber adsorption and fixing device according to any one of claims 1 to 4, characterized in that: The optical fiber rotation mechanism (1) further comprises a fixing bracket (13), wherein the fixing bracket (13) is sleeved on the fixing block (11), and a first locking screw (130) is provided on the fixing bracket (13) for locking the fixing block (11).

6. The optical fiber adsorption and fixing device according to any one of claims 1 to 4, characterized in that: The fiber compression block (12) is provided with a second locking screw (120), and the second locking screw (120) cooperates with the fiber compression block (12) to fix the optical fiber (5) on the fixing block (11); The second locking screw (120) is connected to the fixing block (11) by a threaded connection or a magnetic adsorption method; When the second locking screw (120) is connected to the fixing block (11) in a magnetic attraction manner, the second locking screw (120) is made of martensitic steel, and a cylindrical magnet (111) is provided below the second locking screw (120) at a corresponding position on the fixing block (11), and the cylindrical magnet (111) corresponds to the second locking screw (120).

7. The optical fiber adsorption and fixing device according to any one of claims 1 to 4, characterized in that: The vacuum adsorption unit (3) comprises a connector (31) and an optical fiber suction nozzle (32), and the vacuum sealed cavity (30) is arranged between the connector (31) and the optical fiber suction nozzle (32); The connector (31) is arranged at the top of the vacuum adsorption unit (3), the connector (31) is externally connected to a vacuum generating assembly, the optical fiber suction nozzle (32) is arranged below the vacuum adsorption unit (3), and the lower end of the optical fiber suction nozzle (32) adsorbs the optical fiber (5).

8. The optical fiber adsorption and fixing device according to claim 5, characterized in that: A base plate (14) is provided at the bottom of the optical fiber rotation mechanism (1), a fixed bracket (13) of the optical fiber rotation mechanism (1) is fixed to one side of the upper surface of the base plate (14), and the clamping arm assembly (2) is fixed to the other side of the upper surface of the base plate (14).

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