Optical fiber tension tester

Abstract

The present invention discloses an optical fiber tension tester, comprising a tester body, the tester body including an optical fiber clamping mechanism, a tension applying mechanism, and a tension testing module. The optical fiber clamping mechanism includes a first optical fiber clamp seat and a second optical fiber clamp seat, each for clamping a different portion of an optical fiber to be tested. The optical fiber clamping mechanism is disposed at the top of the tester body, the tension applying mechanism is disposed below the optical fiber clamping mechanism and is configured to drive the first optical fiber clamp seat to move away from or toward the second clamp seat, and the tension testing module is disposed between the two optical fiber clamp seats. The tension tester of the present invention achieves accurate tension measurement within a relatively large range of tension test values by providing a tension applying mechanism to pull and drive the optical fiber to be tested, and providing a tension testing module between the two optical fiber clamp seats to perform real-time tension testing.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber tension testing, in particular to an optical fiber tension testing instrument. Background Art

[0002] During the production of optical fiber and optical communication projects, fiber optic splicing is often required. After splicing, the splice strength needs to be tested to ensure system reliability. Testing splice strength typically involves applying a certain tensile force to the fiber and observing the splice point under the force to determine whether the splice meets the required strength. Currently, most fiber fusion splicers and fiber coating machines include built-in tensile testing capabilities. However, these devices typically apply very limited tensile forces and cannot accurately measure them, failing to meet testing requirements and accurately determining splice strength. Summary of the Invention

[0003] The purpose of the present invention is to provide an optical fiber tension tester, which can achieve accurate tension measurement within a larger tension test value range by setting a tension applying mechanism to pull and drive the optical fiber to be tested, and setting a tension testing module between two optical fiber clamp seats to perform real-time tension testing.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an optical fiber tension tester, comprising a tester body, the tester body including a fiber clamping mechanism, a tension applying mechanism, and a tension testing module, the fiber clamping mechanism including a first fiber clamp seat and a second fiber clamp seat, respectively used to clamp different parts of the optical fiber to be tested, the fiber clamping mechanism is arranged at the top of the tester body, the tension applying mechanism is arranged below the fiber clamping mechanism, and is used to drive the first fiber clamp seat to move in a direction away from or close to the second clamp seat, and the tension testing module is arranged between the two fiber clamp seats.

[0005] Preferably, the tester body includes a mounting bracket, the tension applying mechanism is installed on the mounting bracket, the tension applying mechanism is used to drive the first optical fiber clamp seat to move, the tension testing module includes an elastic connection component and a tension sensor, the elastic connection component is arranged between the tension applying mechanism and the first optical fiber clamp seat, and the tension sensor is connected to the second optical fiber clamp seat.

[0006] Preferably, the tension applying mechanism includes a stepper motor and a transmission seat, the transmission seat is slidably connected to the mounting bracket, the output shaft of the stepper motor is installed with a screw, and the transmission seat is sleeved on the screw. As the screw rotates, the transmission seat moves along the length direction of the optical fiber to be tested, and the elastic connecting component is arranged between the transmission seat and the first optical fiber clamp seat.

[0007] Preferably, the elastic connection assembly includes a spring guide column and a movable clamp connection block, the movable clamp block is slidably connected to the mounting bracket, and the movable clamp connection block is connected to the first optical fiber clamp seat, the two ends of the spring guide column are respectively connected to the transmission seat and the movable clamp connection block, and at least one end thereof is connected by a spring.

[0008] Preferably, the lower end of the second optical fiber clamp seat is connected to the fixed clamp connection block, and one side of the fixed clamp block is connected to the force-bearing surface of the tension sensor.

[0009] Preferably, a display screen is provided on the tester body, the display screen is electrically connected to the circuit control board, the tension sensor is electrically connected to the pressure transmitter, the pressure transmitter is electrically connected to the circuit control board, and the pressure transmitter is used to convert and process the electrical signal detected by the tension sensor and then transmit it to the circuit control board.

[0010] Preferably, the optical fiber clamping mechanism includes a lower pressure cover plate and a placement platform, the lower pressure cover plate is hingedly connected to one end of the placement platform, a placement groove is provided on the placement platform for accommodating the optical fiber to be tested, and the lower pressure cover plate is provided with an extrusion pad matching the placement groove, and a transparent protective cover is provided between the two optical fiber clamp seats, and the transparent protective cover is provided on the outside of the optical fiber to be tested to protect the operator and avoid personal injury caused by breakage of the test optical fiber.

[0011] Preferably, a linkage mechanism is provided between the lower pressure cover plate and the placement platform, and the linkage mechanism is used to apply downward pressure to the lower pressure cover plate when the lower pressure cover plate and the placement platform are in a pressed state; the linkage mechanism includes a pressing wrench hinged to the placement platform, and the two sides of the pressing wrench are respectively connected to the lower pressure cover plate through two connecting rods, and the two ends of the two connecting rods are hingedly connected to the pressing wrench and the lower pressure cover plate; when the lower pressure cover plate and the placement platform are in a pressed state, the connecting rod and the pressing wrench are parallel to each other, and the angle between the pressing wrench and the placement platform is less than 90 degrees.

[0012] Preferably, a rectangular through hole is provided on the mounting bracket, and the transmission seat includes an upper transmission block and a lower transmission block, the upper transmission block and the lower transmission block are connected by a waist section passing through the rectangular through hole, the upper transmission block is connected to the spring guide column, and the lower transmission block is sleeved on the outside of the screw.

[0013] Preferably, the tester body further includes a circuit control system, and a display screen and control buttons are also provided on the tester body. The stepper motor, tension sensor, pressure transmitter, display screen and control buttons are all electrically connected to the circuit control system.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a tension applying mechanism to pull and drive the optical fiber to be tested. The tension applying mechanism includes a stepping motor and a transmission seat. The output shaft of the stepping motor is equipped with a lead screw, and the transmission seat is sleeved on the lead screw. As the lead screw rotates, the transmission seat moves along the length direction of the optical fiber to be tested. The tension test value range is large, and by arranging a tension testing module between two optical fiber clamp seats, tension testing can be performed in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of an optical fiber tension tester of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of an optical fiber tension tester of the present invention;

[0018] Figure 3 In the optical fiber tension tester of the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 The figure is a schematic diagram of the disassembled structure of an optical fiber tension tester of the present invention.

[0020] Figure: 1. Tester body; 2. Fiber clamping mechanism; 21. Lower pressure cover; 2101. Squeeze pad; 22. Placement platform; 2201. Placement slot; 2202. Rubber positioning slot; 201. First fiber clamp seat; 202. Second fiber clamp seat; 2011. Fixture connection block; 3. Tension applying mechanism; 301. Stepper motor; 3011. Lead screw; 302. Transmission seat; 3021. Upper transmission block; 3022. Lower transmission block Moving block; 3023, waist section; 4, tensile test module; 401, elastic connection component; 4011, spring guide column; 4012, movable fixture connection block; 402, tensile sensor; 5, mounting bracket; 501, rectangular through hole; 6, display screen; 7, pressure transmitter; 8, transparent protective cover; 9, control button; 10, driver; 11, panel; 12, bottom plate; 13, linkage mechanism; 1301, press wrench; 1302, connecting rod. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0022] An embodiment provided by the present invention:

[0023] Figure 1-Figure 3As shown, an optical fiber tension tester includes a tester body 1, the tester body 1 includes a fiber clamping mechanism 2, a tension applying mechanism 3 and a tension testing module 4, the fiber clamping mechanism 2 includes a first fiber clamp seat 201 and a second fiber clamp seat 202 detachably connected to the tester body 1, respectively used to clamp different parts of the optical fiber to be tested, the fiber clamping mechanism 2 is arranged at the top of the tester body, the tension applying mechanism 3 is arranged below the fiber clamping mechanism 2, and is used to drive the first fiber clamp seat to move in a direction away from or close to the second clamp seat, and the tension testing module 4 is arranged between the two fiber clamp seats. The tester body 1 includes a mounting bracket 5, on which the tension applying mechanism 3 is mounted. The tension applying mechanism 3 is used to drive the first fiber clamping seat 201 to move. The tension testing module 4 includes an elastic connection assembly 401 and a tension sensor 402. The elastic connection assembly 401 is disposed between the tension applying mechanism 3 and the first fiber clamping seat 201, and the tension sensor 402 is connected to the second fiber clamping seat 202. The tension applying mechanism 3 includes a stepping motor 301 and a transmission seat 302. The transmission seat 302 is slidably connected to the mounting bracket 5. The output shaft of the stepping motor 301 is mounted with a lead screw 3011. The transmission seat 302 is sleeved on the lead screw 3011. As the lead screw 3011 rotates, the transmission seat 302 moves along the length of the optical fiber to be tested. The elastic connection assembly 401 is disposed between the transmission seat 302 and the first fiber clamping seat 201. The elastic connection assembly 401 includes a spring guide post 4011 and a movable clamp connection block 4012. The movable clamp block is slidably connected to the mounting bracket 5, and the movable clamp connection block 4012 is connected to the first fiber clamp seat 201. The two ends of the spring guide post 4011 are connected to the transmission seat 302 and the movable clamp connection block 4012, respectively, and at least one end is connected via a spring. The lower end of the second fiber clamp seat 202 is connected to the fixed clamp connection block 2011, and one side of the fixed clamp block is connected to the force-bearing surface of the tension sensor 402. The movable clamp connection block 4012 and the first fiber clamp seat 201, as well as the second fiber clamp seat 202 and the fixed clamp connection block 2011, are both connected via pins. This pin connection ensures consistent horizontal movement and facilitates the replacement of fiber clamp seats to accommodate different fiber thicknesses.The tester pulls and drives the optical fiber to be tested by setting a tension applying mechanism 3. The tension applying mechanism 3 includes a stepping motor 301 and a transmission seat 302. The output shaft of the stepping motor 301 is equipped with a screw 3011, and the transmission seat 302 is sleeved on the screw 3011. As the screw 3011 rotates, the transmission seat 302 moves along the length direction of the optical fiber to be tested. The tension test value range is large, and by setting a tension testing module 4 between the two optical fiber clamp seats, tension testing can be performed in real time.

[0024] like Figure 2 and Figure 3 As shown, the optical fiber clamping mechanism 2 includes a lower pressing cover plate 21 and a placing platform 22. The lower pressing cover plate 21 is hingedly connected to one end of the placing platform 22. A placing groove 2201 is provided on the placing platform 22 for accommodating the optical fiber to be tested. The lower pressing cover plate 21 is provided with an extrusion pad 2101 matching the placing groove 2201. The optical fiber clamping mechanism 2 is suitable for clamping optical fibers with a diameter of 40μm to 1.2㎜. The placing groove 2201 is a rectangular placing groove. Rubber positioning grooves 2202 are provided at both ends of the rectangular placing groove 2201. The rubber positioning grooves 2202 have a certain elastic deformation ability and are suitable for flexible clamping of optical fibers with a diameter of 40μm to 1.2㎜, and have a large friction coefficient. The length of the squeeze pad 2101 is 15cm-35cm. Since a coating layer is provided on the outside of the optical fiber to be tested, the coating layer has elastic deformation ability to play a protective role and has a certain friction coefficient. Therefore, the friction coefficient between the squeeze pad 2101 and the coating layer of the optical fiber to be tested along the length direction of the optical fiber to be tested is relatively large, which can prevent the optical fiber to be tested from slipping or deflecting, resulting in inaccurate measurement. A linkage mechanism 13 is provided between the lower pressure cover plate 21 and the placement platform 22, and the linkage mechanism 13 is used to apply downward pressure to the lower pressure cover plate 21 when the lower pressure cover plate 21 and the placement platform 22 are in a pressed state; the linkage mechanism 13 includes a pressing wrench 1301 hinged to the placement platform 22, and the two sides of the pressing wrench 1301 are respectively connected to the lower pressure cover plate 21 through two connecting rods 1302, and the two ends of the two connecting rods 1302 are hingedly connected to the pressing wrench 1301 and the lower pressure cover plate 21; when the lower pressure cover plate 21 and the placement platform 22 are in a pressed state, the connecting rod 1302 and the pressing wrench 1301 are parallel to each other, and the angle between the pressing wrench 1301 and the placement platform 22 is less than 90 degrees. A larger downward pressure can be achieved through the linkage mechanism 13. Due to the protection of the coating layer, the optical fiber to be tested will not be damaged. The setting of the linkage mechanism 13 can further prevent the optical fiber to be tested from deviating during the pulling process, resulting in inaccurate measurement.

[0025] A transparent protective cover 8 is provided between the two fiber clamps and covers the outside of the fiber under test. This protects the operator from injury caused by fiber breakage. The top of the tester body 1 is provided with a panel 11, to which the transparent protective cover 8 is mounted directly via two hinges.

[0026] like Figure 4 As shown, the tester body 1 is provided with a display screen 6, which is electrically connected to the circuit control board. The tension sensor 402 is electrically connected to a pressure transmitter 7, which is also electrically connected to the circuit control board. The pressure transmitter 7 is used to convert and process the electrical signal detected by the tension sensor 402 and transmit it to the circuit control board. The graphical display facilitates observation and configuration. The tester body 1 also includes a circuit control system, which is also provided with a display screen and control buttons 9. The stepper motor 301, tension sensor 402, pressure transmitter 7, display screen, and control buttons 9 are all electrically connected to the circuit control system. The circuit control system includes a driver 10, a pressure transmitter 7, and a circuit control board, all of which are mounted on a base plate 12 within the tester body 1.

[0027] The mounting bracket 5 is provided with a rectangular through-hole 501. The transmission base 302 includes an upper transmission block 3021 and a lower transmission block 3022. The upper and lower transmission blocks 3021 and 3022 are connected by a waist section 3023 extending through the rectangular through-hole 501. The upper transmission block 3021 is connected to the spring guide post 4011, and the lower transmission block 3022 is sleeved on the outside of the lead screw 3011. The lower transmission block 3022 fits tightly against the lead screw 3011, which is connected to the stepping motor 301 via a coupling mechanism and mounted below the mounting bracket 5. This allows for comprehensive tensile testing of fused optical fibers with a high precision step size and a wide range.

[0028] Working Principle: Step 1. Select a suitable fiber optic clamp and install it on the machine;

[0029] Step 2. Press the power button;

[0030] Step 3. Lift the lower cover plate 21 of the optical fiber fixture, place the optical fiber to be tested into the placement groove 2201, close the cover plate, and close the transparent protective cover 8;

[0031] Step 4. Set the tension value to be applied to the optical fiber to be tested;

[0032] Step 5. Press the start button, then the stepper motor 301 will start running, driving the lead screw 3011 to rotate through the coupling mechanism, and the transmission seat 302 which is tightly fitted with the lead screw 3011 will move together in the horizontal straight line direction. When the transmission seat 302 moves, the spring guide column 4011 will push the movable clamp connection block 4012 and the first optical fiber clamp seat 201 installed above the movable clamp connection block 4012 to move. At this time, one of the two optical fiber clamp seats is fixed, and the other moves horizontally in a straight line away from the center. Due to the effect of the optical fiber to be tested in the optical fiber clamp seat, the movement of the movable clamp connection block 4012 is restricted, but the transmission seat 302 is still moving in this direction. As the movement progresses, the length of the compression spring on the spring guide column 4011 between the movable clamp connection block 4012 and the transmission seat 302 is compressed, and the installation The second optical fiber clamp seat 202 mounted on the movable fixture connection block 4012 generates a reaction force, which is transmitted to the first optical fiber clamp seat 201 mounted on the fixed fixture connection block 2011 through the optical fiber to be tested, and is further applied to the force-bearing surface of the tension sensor 402 through the optical fiber clamp seat and the fixed fixture connection block 2011. The tensile pressure value applied to the tension sensor 402 is transmitted to the pressure transmitter 7 through an electrical connection. The pressure transmitter 7 amplifies the received weak electrical signal and converts it into a standard signal, which is then transmitted to the circuit control system. The circuit control system compares the signal of the pressure transmitter 7 with the set tensile force value and controls the forward and reverse operation of the motor until the signal of the pressure transmitter 7 is equal to the set tensile force value. After the measured pressure value is equal to the set tensile force value, this state is maintained for a certain period of time, and the test information is displayed on the display screen 6.

[0033] Step 6. Determine the splice strength of the optical fiber to be tested by using the parameter values displayed on the display screen 6.

[0034] Step 7. Open the lower pressing cover 21 of the optical fiber clamp seat, open the transparent protective cover 8, take out the optical fiber to be tested, and the tension test is completed.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An optical fiber tension tester, comprising a tester body (1), characterized in that: The tester body (1) comprises a fiber clamping mechanism (2), a tension applying mechanism (3) and a tension testing module (4); the fiber clamping mechanism (2) comprises a first fiber clamp seat (201) and a second fiber clamp seat (202), which are respectively used to clamp different parts of the optical fiber to be tested; the fiber clamping mechanism (2) is arranged on the top of the tester body (1); the tension applying mechanism (3) is arranged below the fiber clamping mechanism (2) and is used to drive the first fiber clamp seat (201) to move in a direction away from or close to the second fiber clamp seat (202); and the tension testing module (4) is arranged between the two fiber clamp seats; The tester body (1) includes a mounting bracket (5), the tension applying mechanism (3) is mounted on the mounting bracket (5), the tension applying mechanism (3) is used to drive the first optical fiber clamp seat (201) to move, the tension testing module (4) includes an elastic connection component (401) and a tension sensor (402), the elastic connection component (401) is arranged between the tension applying mechanism (3) and the first optical fiber clamp seat (201), and the tension sensor (402) is connected to the second optical fiber clamp seat (202); The tension applying mechanism (3) comprises a stepping motor (301) and a transmission seat (302); the transmission seat (302) is slidably connected to the mounting bracket (5); a lead screw (3011) is mounted on the output shaft of the stepping motor (301); the transmission seat (302) is sleeved on the lead screw (3011); as the lead screw (3011) rotates, the transmission seat (302) moves along the length direction of the optical fiber to be tested; and the elastic connection component (401) is arranged between the transmission seat (302) and the first optical fiber clamp seat (201); The elastic connection assembly (401) comprises a spring guide column (4011) and a movable clamp connection block (4012), wherein the movable clamp connection block (4012) is slidably connected to the mounting bracket (5), and the movable clamp connection block (4012) is connected to the first optical fiber clamp seat (201), and the two ends of the spring guide column (4011) are respectively connected to the transmission seat (302) and the movable clamp connection block (4012), and at least one end thereof is connected via a spring; The lower end of the second optical fiber clamp seat (202) is connected to the fixed clamp connection block (2011), and one side of the fixed clamp connection block (2011) is connected to the force-bearing surface of the tension sensor (402); The optical fiber clamping mechanism (2) comprises a lower pressing cover plate (21) and a placing platform (22), wherein the lower pressing cover plate (21) is hingedly connected to one end of the placing platform (22), and the placing platform (22) is provided with a placing groove (2201) for accommodating the optical fiber to be tested, and the lower pressing cover plate (21) is provided with a squeezing pad (2101) matching the placing groove (2201), and a transparent protective cover (8) is provided between the two optical fiber clamp seats, and the transparent protective cover (8) is provided on the outside of the optical fiber to be tested; A linkage mechanism (13) is provided between the lower pressing cover plate (21) and the placing platform (22), and the linkage mechanism (13) is used to apply downward pressure to the lower pressing cover plate (21) when the lower pressing cover plate (21) and the placing platform (22) are in a pressed state; the linkage mechanism (13) includes a pressing wrench (1301) hinged to the placing platform (22), and the two sides of the pressing wrench (1301) are respectively connected by two connecting rods. (1302) is connected to the lower pressure cover plate (21), and both ends of the two connecting rods (1302) are hingedly connected to the pressing wrench (1301) and the lower pressure cover plate (21); when the lower pressure cover plate (21) and the placement platform (22) are in a pressed state, the connecting rod (1302) and the pressing wrench (1301) are parallel to each other, and the angle between the pressing wrench (1301) and the placement platform (22) is less than 90 degrees; A rectangular through hole (501) is provided on the mounting bracket (5); the transmission seat (302) comprises an upper transmission block (3021) and a lower transmission block (3022); the upper transmission block (3021) and the lower transmission block (3022) are connected via a waist section (3023) passing through the rectangular through hole (501); the upper transmission block (3021) is connected to the spring guide column (4011); and the lower transmission block (3022) is sleeved on the outside of the lead screw (3011).

2. The optical fiber tension tester according to claim 1, characterized in that: The tester body (1) is provided with a display screen (6), the display screen (6) is electrically connected to the circuit control board, the tension sensor (402) is electrically connected to the pressure transmitter (7), the pressure transmitter (7) is electrically connected to the circuit control board, and the pressure transmitter (7) is used to convert and process the electrical signal detected by the tension sensor (402) and transmit it to the circuit control board.

3. The optical fiber tension tester according to claim 2, characterized in that: The tester body (1) further comprises a circuit control system. A control button (9) is also provided on the tester body (1). The stepping motor (301) and the control button (9) are both electrically connected to the circuit control board.

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