Bending tester for optical cable

Abstract

The utility model discloses a bending testing machine for an optical cable, which comprises a rack and a servo motor, a working table formed by section bars is arranged on the upper side of the rack, a herringbone support frame is fixedly arranged above the working table, a horizontal linear guide rail is fixedly arranged on the side surface of the working table, the servo motor is transversely arranged on the working table, and the servo motor is arranged on the working table. The servo motor is located at the end of the linear guide rail, two lead screws opposite in spiral direction are rotationally connected into the linear guide rail, the opposite ends of the two lead screws are connected through a coupler, an output shaft of the servo motor drives one ends of the lead screws through a speed reducer, and two sliding blocks are slidably connected into the linear guide rail. The two sliding blocks are located on the lead screw in a one-to-one correspondence mode and connected with the lead screw in a threaded mode, the back side of each sliding block is provided with an extending supporting arm, a clamp used for fixing an optical cable is installed on each supporting arm, the supporting frame is of an inverted-U-shaped frame structure, and a cavity in the middle of the supporting frame supports an optical cable sample in the testing process. The testing machine can be used for testing and observing the testing condition by one person, and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cable testing, in particular to a bending testing machine for optical cables. Background Art

[0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. They are communication cable components that use one or more optical fibers placed in a sheath as transmission media and can be used alone or in groups. Optical cables are mainly composed of optical fibers, plastic protective sleeves and plastic sheaths. The bending test of optical cables is to detect the bending resistance of optical cables. After searching, it was found that the Chinese utility model patent with the publication number of CN208833610U discloses a bending test device for optical cable sleeves. The device has a test table and a bracket; the test table is provided with a clamp, a shield, a slide rail and a scale; the shield is provided with a positioning pin, a fixed guide hole and another scale. The utility model has a simple structure, is easy to operate and has accurate test results, and is suitable for industrial production. However, the above scheme also has the following shortcomings: the test process requires the end of the sample to be manually pulled to gradually reduce the radius of the ring, and it is difficult to control the uniformity of the pulling rate by manual pulling. In addition, another person is required to observe the changes in the bending part of the sample during the pulling process, so it requires the cooperation of multiple people. Utility Model Content

[0003] The purpose of the utility model is to provide a bending tester for optical cables to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending test machine for optical cables, comprising a frame and a servo motor, a workbench made of profiles is provided on the upper side of the frame, a herringbone support frame is fixedly installed above the workbench, a vertical ruler is fixedly installed in the middle of the support frame, a horizontal linear guide is fixedly installed on the side of the workbench, the servo motor is horizontally installed on the workbench, the servo motor is located at the end of the linear guide, two screw rods with opposite spiral directions are rotatably connected in the linear guide, the two screw rods are connected by a coupling between the opposite ends, the output shaft of the servo motor drives one end of the screw rod through a reducer, two sliders are slidably connected in the linear guide, the two sliders are located on the screw rod one by one and are screwed thereto, a protruding support arm is provided on the back side of the slider, a clamp for fixing the optical cable is installed on the support arm, the support frame is an inverted U-shaped frame structure, and the cavity in the middle of the support frame supports the optical cable sample during the test.

[0005] Preferably, two bearing seats are fixedly installed in the slide groove of the linear guide rail, and the inner end of the screw rod is installed corresponding to the bearing seat.

[0006] Preferably, two proximity switches are installed on the workbench, and the two proximity switches are respectively located at the middle and one end of the linear guide rail, and the proximity switches are located at two extreme positions of the lateral movement of the slider.

[0007] Compared with the prior art, the beneficial effects of the utility model are: the servo motor drives the two sliders in the linear guide rail to move toward or away from each other through the screw rod. When the slider moves outward, the bent ring part can be pulled at a stable and uniform speed to reduce the diameter. A single person can perform the test operation and observe the test conditions, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0009] Figure 2 It is a side view structural schematic diagram of the utility model;

[0010] Figure 3 It is a rear view structural schematic diagram of the utility model.

[0011] In the figure: 1. frame; 2. workbench; 3. support frame; 4. linear guide; 5. lead screw; 6. servo motor; 7. coupling; 8. bearing seat; 9. proximity switch; 10. slider. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0013] See also Figure 1-3 The utility model provides a technical solution: a bending test machine for optical cables, including a frame 1 and a servo motor 6. A workbench 2 composed of profiles is provided on the upper side of the frame 1. A herringbone support frame 3 is fixedly installed above the workbench 2. A vertical ruler is fixedly installed in the middle of the support frame 3. The ruler is used to measure the diameter of a looped sample. The support frame 3 is an inverted U-shaped frame structure. The cavity in the middle of the support frame 3 supports the looped part of the test during the test to keep it in an upright state.

[0014] A horizontal linear guide 4 is fixedly installed on the side of the workbench 2, and a servo motor 6 is horizontally installed on the workbench 2. The servo motor 6 is located at the end of the linear guide 4. Two screw rods 5 with opposite spiral directions are rotatably connected in the linear guide 4. The two screw rods 5 are arranged horizontally coaxially. The two screw rods 5 are connected between the opposite ends through a coupling 7. Two bearing seats 8 are fixedly installed in the slide groove of the linear guide 4. The inner end of the screw rod 5 is installed corresponding to the bearing seat 8. The bearing seat 8 supports the end of the screw rod 5. The output shaft of the servo motor 6 drives one end of the screw rod 5 through a reducer, and the two screw rods 5 rotate synchronously when driven.

[0015] There are two sliders 10 slidably connected in the linear guide 4. The two sliders 10 are located on the screw rod 5 one by one and are screwed thereto. The two sliders 10 can move synchronously toward or away from each other. The back side of the slider 10 is provided with an extended arm, and a clamp for fixing the optical cable is installed on the arm. Two proximity switches 9 are installed on the workbench 2. The two proximity switches 9 are located in the middle and one end of the linear guide 4 respectively. The proximity switches 9 correspond to the extreme positions of the movement of the slider 10.

[0016] Working principle: When in use, make a circle of the optical cable sample, and place the bent circled part in the support frame 3. The two ends of the sample are fixed on the clamps of the slider 10 respectively, and then the servo motor 6 is used to drive the screw 5 to rotate, driving the two sliders 10 to move in opposite directions. The diameter of the pulled circle is gradually reduced, and the structural changes or damage of the sample are observed.

[0017] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending test machine for optical cables, comprising a frame (1) and a servo motor (6), wherein a workbench (2) made of profiles is provided on the upper side of the frame (1), and the characteristics are: A herringbone support frame (3) is fixedly installed above the workbench (2), a vertical ruler is fixedly installed in the middle of the support frame (3), a horizontal linear guide rail (4) is fixedly installed on the side of the workbench (2), the servo motor (6) is horizontally installed on the workbench (2), the servo motor (6) is located at the end of the linear guide rail (4), and two screw rods (5) with opposite spiral directions are rotatably connected in the linear guide rail (4), and the two screw rods (5) are connected between the opposite ends. The output shaft of the servo motor (6) is connected through a coupling (7), and drives one end of the lead screw (5) through a reducer. Two sliders (10) are slidably connected in the linear guide rail (4). The two sliders (10) are located on the lead screw (5) in a one-to-one correspondence and are screwed thereto. The back side of the slider (10) is provided with a protruding support arm, and a clamp for fixing the optical cable is installed on the support arm. The support frame (3) is an inverted U-shaped frame structure, and the cavity in the middle of the support frame (3) supports the optical cable sample during the test.

2. The bending test machine for optical cables according to claim 1, characterized in that: Two bearing seats (8) are fixedly installed in the slide groove of the linear guide rail (4), and the inner end of the screw rod (5) is installed corresponding to the bearing seat (8).

3. The bending test machine for optical cables according to claim 2, characterized in that: Two proximity switches (9) are installed on the workbench (2). The two proximity switches (9) are respectively located at the middle and one end of the linear guide rail (4). The proximity switches (9) correspond to the two extreme positions of the lateral movement of the slider (10).

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