A plastic optical fiber transmission quality detection device

Abstract

The application relates to the technical field of material optical nondestructive testing, and discloses a plastic optical fiber transmission quality detection device, which comprises a fixing base, a right detection integrating sphere, a left detection integrating sphere, a pay-off rack, a pay-off wheel and a plastic optical fiber body wound on the outer surface of the pay-off wheel. A closing mechanism for detecting defects such as internal cracks and cross-section flaws of the plastic optical fiber body is arranged on the upper surface of the fixing base. A feeding mechanism for guiding and conveying the plastic optical fiber body is arranged in the closing mechanism. A cleaning mechanism for cleaning the outer surface of the plastic optical fiber body is arranged on the upper surface of the fixing base. The closing mechanism and the feeding mechanism are mechanically linked. The closing mechanism opens and closes synchronously to control the closing and opening of the cleaning wheel of the cleaning mechanism, the plastic optical fiber body can be kept in the center of the integrating sphere cavity during detection, the metal guiding structure can avoid shielding and scattering light collection, and the light path stability and detection precision of the plastic optical fiber body defect detection are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of optical nondestructive testing technology for materials, and specifically provides a device for testing the transmission quality of plastic optical fibers. Background Technology

[0002] After the production of plastic optical fibers is completed, performance indicators such as transmission loss and surface defects need to be tested, which falls under the category of material physicochemical property testing. Existing testing equipment often uses an integrating sphere to collect the emitted light signal from the fiber to determine the fiber's transmission quality. During the testing process, the fiber is continuously fed through the testing station, and defects such as internal cracks and cross-sectional flaws are identified by changes in the light signal. This type of testing method enables online continuous testing of optical fibers, improves the efficiency of finished product sampling inspection, and is widely used in the quality inspection process of plastic optical fibers before they leave the factory.

[0003] Existing testing equipment typically uses a single, enclosed integrating sphere, making fiber insertion and exit cumbersome and time-consuming. Dust and impurities adhering to the fiber surface can be carried into the integrating sphere, contaminating its inner wall, interfering with optical signal acquisition accuracy, and affecting the accuracy of test results. This invention addresses these problems by employing a split-type double-half integrating sphere structure, coupled with a linkage guide rod and a front-mounted rotating cleaning mechanism. This automatically guides the fiber and removes dust from the outer wall during the insertion stage, simplifying the insertion process and reducing the interference of impurities on testing accuracy. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a plastic optical fiber transmission quality testing device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic optical fiber transmission quality testing device, comprising a fixed base, a right detection integrating sphere, a left detection integrating sphere, a wire feeding frame, a wire feeding reel, and a plastic optical fiber body wound on the outer surface of the wire feeding reel. The upper surface of the fixed base is provided with a closing mechanism for detecting defects such as internal cracks and cross-sectional flaws in the plastic optical fiber body. The inside of the closing mechanism is provided with a feeding mechanism for guiding and conveying the plastic optical fiber body. The upper surface of the fixed base is provided with a cleaning mechanism for cleaning the outer surface of the plastic optical fiber body. The closing mechanism is mechanically linked to the feeding mechanism, and the opening and closing action of the closing mechanism synchronously controls the closing and opening of the cleaning wheel of the cleaning mechanism.

[0006] Preferably, the closing mechanism includes a rotating rod rotatably connected to the upper surface of a fixed base. A first gear and a second gear are fixedly connected to the outer surface of the rotating rod. A first pulling gear is slidably connected to the upper surface of the fixed base. A connecting frame is fixedly connected to the upper surface of the first pulling gear. A dustproof chamber is fixedly connected to the upper surface of the fixed base. A pushing block is slidably connected to the upper surface of the fixed base. A second pulling gear is fixedly connected to the rear end of the pushing block. A support rod is fixedly connected to the upper surface of the fixed base. A third guide wheel is rotatably connected to the upper surface of the support rod. A push telescopic rod is fixedly connected to the side surface of the support rod. A sliding plate is fixedly connected to one end of the push telescopic rod. A main spring is sleeved on the outer surface of the main push rod.

[0007] Preferably, the feeding mechanism includes a first connecting rod fixedly connected to the upper surface of the sliding plate, a first sliding rod slidably connected to the upper end of the first connecting rod, a gripper rotatably connected to the upper surface of the first sliding rod, a second sliding rod fixedly connected to the bottom end of the first sliding rod, and a first spring sleeved on the outer surface of the second sliding rod.

[0008] Preferably, the cleaning mechanism includes a fixed frame fixedly connected to the upper surface of a fixed base. A first sliding frame is slidably connected inside the fixed frame. A polishing head is fixedly connected to the upper surface of the first sliding frame. A first telescopic rod is fixedly connected to the upper surface of the fixed frame. A second spring is sleeved on the outer surface of the first telescopic rod. An upper fixed plate is fixedly connected to the bottom end of the first telescopic rod. An upper cleaning wheel is rotatably connected to the front end of the upper fixed plate. A second connecting rod is fixedly connected to one end of the upper cleaning wheel. An upper gear is fixedly connected to the other end of the upper cleaning wheel. A side baffle is fixedly connected to the upper surface of the first sliding frame. A lower cleaning wheel is rotatably connected to the front end of the first sliding frame. A lower gear is fixedly connected to one end of the lower cleaning wheel. A third telescopic rod is fixedly connected inside the fixed base. A third spring is sleeved on the outer surface of the third telescopic rod. A push plate is fixedly connected to the top end of the third telescopic rod. A main push rod is fixedly connected inside the connecting frame. A push inclined plate is fixedly connected to the upper surface of the push plate.

[0009] Preferably, a first transmission wheel is fixedly connected to the outer surface of the second connecting rod, a first transmission belt is driven to the outer surface of the first transmission wheel, a second transmission belt is driven to the outer surface of the wire feeding wheel, a fixed block is fixedly connected to the upper surface of the fixed base, a third sliding rod is slidably connected inside the fixed block, a fourth spring is sleeved on the outer surface of the third sliding rod, a second sliding frame is fixedly connected to the upper end of the third sliding rod, a second transmission wheel is rotatably connected inside the second sliding frame, a waste rack is fixedly connected to the upper surface of the fixed base, and a collection box is slidably connected inside the waste rack.

[0010] Preferably, a take-up frame and a control panel are fixedly connected to the upper surface of the fixed base. A take-up wheel is installed inside the take-up frame. A reciprocating screw is rotatably connected inside the pay-off frame. A fixed rod is fixedly connected inside the pay-off frame. A moving block is threadedly connected to the outer surface of the reciprocating screw. A transverse limit wheel and a longitudinal limit wheel are rotatably connected inside the upper end of the moving block.

[0011] Preferably, the reciprocating screw and the pay-off reel are connected by a second transmission belt, the plastic optical fiber body is wound around the outer surface of the take-up reel and the pay-off reel, the fixed rod is slidably connected inside the moving block, and the first transmission wheel, the second transmission wheel, and the reciprocating screw are connected by a first transmission belt.

[0012] Preferably, the second gear is meshed with the first pulling rack, the first gear is meshed with the second pulling rack, the right detection integrating sphere and the left detection integrating sphere are fixed above the connecting frame, a sealing strip is fixedly connected to the side surface of the right detection integrating sphere, a sealing groove is opened on the side surface of the left detection integrating sphere, and optical fiber ports are fixedly connected to the corresponding sides of the left and right detection integrating spheres.

[0013] Preferably, the grippers hold the plastic optical fiber body on both sides, the second sliding rod is slidably connected inside the first connecting rod, and the first spring is disposed between the first connecting rod and the first sliding rod.

[0014] Preferably, the pushing inclined plate is disposed below the sliding plate, the plastic optical fiber body is disposed between the upper and lower cleaning wheels, the upper gear meshes with the lower gear, the upper fixing plate is fixedly connected to the inner top of the fixing frame by the first telescopic rod, and the second connecting rod is vertically slidably assembled inside the fixing base.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention features a split detection cavity composed of left and right integrating spheres, along with a gear-and-spindle linkage closing mechanism and a feeding guide assembly. When the integrating spheres are fully open, the grippers of the feeding mechanism automatically extend forward to the front end of the integrating spheres, directly placing the plastic optical fiber body laterally without the need for manual threading through small wire holes. As the closing mechanism drives the two halves of the integrating spheres to snap together synchronously, the feeding grippers automatically retract backward to avoid the detection optical path. This significantly simplifies the plastic optical fiber loading process, reduces the probability of scratching the plastic optical fiber body during threading, and ensures that the plastic optical fiber body remains completely centered within the integrating sphere cavity during detection. This prevents the metal guide structure from obstructing the collection of scattered light, effectively improving the optical path stability and detection accuracy for detecting defects in the plastic optical fiber body.

[0016] 2. This invention features a cleaning mechanism consisting of a rotating cleaning wheel with upper and lower meshing transmission at the front end of the integrating sphere feed. The unwinding and rewinding wheels synchronously drive the cleaning wheel to rotate via a transmission belt, enabling circumferential all-around dust removal from the outer wall of the moving plastic optical fiber. The dust and debris swept off fall directly into the collection box below for centralized collection. This removes impurities adhering to the surface of the plastic optical fiber in advance, preventing dust from being carried into the integrating sphere and contaminating the inner wall of the sphere, thus avoiding misjudgment of scattered light. At the same time, the entire cleaning, integrating sphere opening and closing, and feeding guidance structure operates in conjunction with the same transmission system, eliminating the need for additional multiple sets of drive components, simplifying the overall structure and reducing equipment manufacturing costs. Attached Figure Description

[0017] Figure 1 This is a front view of a plastic optical fiber transmission quality detection device proposed in this invention; Figure 2 This is a side sectional view of a plastic optical fiber transmission quality detection device proposed in this invention; Figure 3 For the present invention Figure 2 Enlarged view of point A; Figure 4 For the present invention Figure 2 Enlarged view of point B; Figure 5 This is a cross-sectional view of the feeding mechanism of a plastic optical fiber transmission quality detection device proposed in this invention; Figure 6 This is a schematic diagram of the cleaning mechanism of a plastic optical fiber transmission quality detection device proposed in this invention; Figure 7 For the present invention Figure 6 Enlarged view of point C; Figure 8 This is a cross-sectional view of the closed mechanism of a plastic optical fiber transmission quality detection device proposed in this invention.

[0018] Legend: 1. Fixed base; 100. Plastic optical fiber body; 101. Right detection integrating sphere; 102. Left detection integrating sphere; 103. Sealing strip; 104. Sealing groove; 105. Fiber optic port; 106. Light-emitting head; 2. Closing mechanism; 201. Rotating rod; 202. First gear; 203. Second gear; 204. First pulling gear; 205. Connecting frame; 206. Dustproof chamber; 207. Second pulling gear; 208. Push block; 209. Sliding plate; 210. Support rod; 211. Third guide wheel; 212. Push telescopic rod; 213. Main push rod; 214. Main spring; 3. Feeding mechanism; 301. First connecting rod; 302. First sliding rod; 303. Gripper; 304. Second sliding rod; 305. First spring; 4. Cleaning mechanism; 401. Fixed frame; 402. First sliding rod Frame; 403, First telescopic rod; 404, Second spring; 405, Upper fixed plate; 406, Upper sweeping wheel; 407, Second connecting rod; 408, Upper gear; 409, Side baffle; 410, Lower sweeping wheel; 411, Lower gear; 412, Third telescopic rod; 413, Third spring; 414, Push plate; 415, Pushing ramp; 416, First transmission wheel; 417, First transmission belt; 41 8. Second transmission belt; 419. Fixed block; 420. Third sliding rod; 421. Fourth spring; 422. Second sliding frame; 423. Second transmission wheel; 424. Waste rack; 425. Collection box; 5. Take-up frame; 6. Take-up reel; 7. Pay-off frame; 8. Pay-off reel; 9. Control panel; 10. Reciprocating screw; 11. Fixed rod; 12. Moving block; 13. Lateral limit wheel; 14. Longitudinal limit wheel. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-8The device for detecting the transmission quality of plastic optical fiber includes a fixed base 1, a right detection integrating sphere 101, a left detection integrating sphere 102, a wire feeding frame 7, a wire feeding reel 8, and a plastic optical fiber body 100 wound on the outer surface of the wire feeding reel 8. The upper surface of the fixed base 1 is provided with a closing mechanism 2 for detecting defects such as internal cracks and cross-sectional defects in the plastic optical fiber body 100. The inside of the closing mechanism 2 is provided with a feeding mechanism 3 for guiding and conveying the plastic optical fiber body 100. The upper surface of the fixed base 1 is provided with a cleaning mechanism 4 for cleaning the outer surface of the plastic optical fiber body 100. The closing mechanism 2 and the feeding mechanism 3 are mechanically linked, and the opening and closing action of the closing mechanism 2 synchronously controls the closing and opening of the cleaning wheel of the cleaning mechanism 4.

[0022] The closing mechanism 2 includes a rotating rod 201 rotatably connected to the upper surface of the fixed base 1. A first gear 202 and a second gear 203 are fixedly connected to the outer surface of the rotating rod 201. A first pulling gear 204 is slidably connected to the upper surface of the fixed base 1. A connecting frame 205 is fixedly connected to the upper surface of the first pulling gear 204. A dustproof chamber 206 is fixedly connected to the upper surface of the fixed base 1. A pushing block 208 is slidably connected to the upper surface of the fixed base 1. A second pulling gear 207 is fixedly connected to the rear end of the pushing block 208. A support rod 210 is fixedly connected to the upper surface of the fixed base 1. A third guide wheel 211 is rotatably connected to the upper surface of the support rod 210. A push telescopic rod 212 is fixedly connected to the side surface of the main push rod 213. A sliding plate 209 is fixedly connected to one end of the push telescopic rod 212. A second gear 203 is meshed with a first pulling gear 204. A first gear 202 is meshed with a second pulling gear 207. A right detection integrating ball 101 and a left detection integrating ball 102 are fixed above the connecting frame 205. A sealing strip 103 is fixedly connected to the side surface of the right detection integrating ball 101. A sealing groove 104 is opened on the side surface of the left detection integrating ball 102. Optical fiber through-holes 105 are fixedly connected to the corresponding sides of the left detection integrating ball 102 and the right detection integrating ball 101. A main spring 214 is sleeved on the outer surface of the main push rod 213.

[0023] Furthermore, after the plastic optical fiber body 100 is clamped inside the feeding mechanism 3, the sliding plate 209 is pushed backward by the push telescopic rod 212. The feeding mechanism 3 moves backward from the front end of the right detection integrating ball 101 and the left detection integrating ball 102. When the sliding plate 209 moves backward, it pushes the push block 208 to continue moving. Thus, the push block 208 pulls the second pull rack 207 to drive the first gear 202, the rotating rod 201, and the second gear 203 to rotate. The rotating second gear 203 pulls the first pull rack 204 to move. Thus, when the feeding mechanism 3 moves out of the left detection integrating ball 102 and the right detection integrating ball 101, it pulls the first gear 202, the rotating rod 201, and the second gear 203 to rotate. The first pull racks 204 on both sides move towards the middle, thereby causing the right detection integrating sphere 101 and the left detection integrating sphere 102 to move towards the middle simultaneously to form a closed state. At the same time, the main spring 214 inside contracts. This mechanism relies on the meshing of double gears and racks to achieve synchronous opening and closing of the two halves of the integrating sphere. The sealing strip 103 and the sealing groove 104 eliminate the problem of light leakage from the splicing gap. The dustproof chamber 206 isolates the workshop light and dust. At the same time, it can synchronously drive the sliding plate 209 and the feeding mechanism 3 to move in linkage. There is no need to add independent drive components. This reduces the interference of external stray light and dust on the accuracy of scattered light detection, simplifies the transmission structure of the whole machine, and extends the service life of the optical coating on the inner wall of the integrating sphere.

[0024] The feeding mechanism 3 includes a first connecting rod 301 fixedly connected to the upper surface of the sliding plate 209, a first sliding rod 302 slidably connected to the upper end of the first connecting rod 301, a gripper 303 rotatably connected to the upper surface of the first sliding rod 302, a second sliding rod 304 fixedly connected to the bottom end of the first sliding rod 302, a first spring 305 sleeved on the outer surface of the second sliding rod 304, the gripper 303 clamping the two sides of the plastic optical fiber body 100, the second sliding rod 304 slidably connected inside the first connecting rod 301, and the first spring 305 disposed between the first connecting rod 301 and the first sliding rod 302.

[0025] Furthermore, the plastic optical fiber body 100 above the feed reel 8 is first passed through the cleaning mechanism 4 and clamped inside the gripper 303. Then, as the closing mechanism 2 closes, the gripper 303 is pulled backward to guide the plastic optical fiber body 100. Before the right detection integrating sphere 101 and the left detection integrating sphere 102 above the closing mechanism 2 close, the feeding mechanism 3 moves backward, disengaging from inside the right detection integrating sphere 101 and the left detection integrating sphere 102 before closing. When the plastic optical fiber body 100 is guided to the rear of the right detection integrating sphere 101 and the left detection integrating sphere 102, the gripper 303 releases its grip on the plastic optical fiber body 100, allowing the plastic optical fiber to pass through. The plastic optical fiber body 100 can only be pulled backward. When the right detection integrating sphere 101 and the left detection integrating sphere 102 are closed, the plastic optical fiber body 100 is just clamped inside the optical fiber insertion port 105. This mechanism extends and retracts synchronously with the closing mechanism 2. When the integrating sphere is opened, the gripper 303 automatically extends forward to facilitate the lateral placement of the plastic optical fiber body 100, eliminating the need for manual threading of the small optical fiber insertion port 105. The first spring 305 provides flexible buffering to adapt to optical fibers of different outer diameters. The clamping process will not squeeze or scratch the optical fiber. During detection, the gripper 303 completely exits the inner cavity of the integrating sphere, without blocking the scattered light acquisition optical path, effectively improving the loading efficiency and the accuracy of optical fiber detection data.

[0026] The cleaning mechanism 4 includes a fixed frame 401 fixedly connected to the upper surface of the fixed base 1. A first sliding frame 402 is slidably connected inside the fixed frame 401. A polishing head 106 is fixedly connected to the upper surface of the first sliding frame 402. A first telescopic rod 403 is fixedly connected to the upper surface of the fixed frame 401. A second spring 404 is sleeved on the outer surface of the first telescopic rod 403. An upper fixed plate 405 is fixedly connected to the bottom end of the first telescopic rod 403. An upper cleaning wheel 406 is rotatably connected to the front end of the upper fixed plate 405. A second connecting rod 407 is fixedly connected to one end of the upper cleaning wheel 406, and an upper gear 408 is fixedly connected to the other end of the upper cleaning wheel 406. A side baffle 409 is fixedly connected to the upper surface of the first sliding frame 402. A lower cleaning wheel 410 is rotatably connected to the front end of a sliding frame 402. A lower gear 411 is fixedly connected to one end of the lower cleaning wheel 410. A third telescopic rod 412 is fixedly connected inside the fixed base 1. A third spring 413 is sleeved on the outer surface of the third telescopic rod 412. A push plate 414 is fixedly connected to the top end of the third telescopic rod 412. A push inclined plate 415 is fixedly connected to the upper surface of the push plate 414. A first transmission wheel 416 is fixedly connected to the outer surface of the second connecting rod 407. A first transmission belt 417 is driven to the outer surface of the first transmission wheel 416. A second transmission belt 418 is driven to the outer surface of the wire feeding wheel 8. A fixed block 419 is fixedly connected to the upper surface of the fixed base 1. The fixed block 419 has a sliding connection inside. A third sliding rod 420 is connected, and a fourth spring 421 is sleeved on the outer surface of the third sliding rod 420. A second sliding frame 422 is fixedly connected to the upper end of the third sliding rod 420. A second transmission wheel 423 is rotatably connected inside the second sliding frame 422. A waste rack 424 is fixedly connected to the upper surface of the fixed base 1. A collection box 425 is slidably connected inside the waste rack 424. A take-up frame 5 and a control panel 9 are fixedly connected to the upper surface of the fixed base 1. A take-up wheel 6 is assembled inside the take-up frame 5. A reciprocating screw 10 is rotatably connected inside the pay-off frame 7. A fixed rod 11 is fixedly connected inside the pay-off frame 7. A moving block 12 is threadedly connected to the outer surface of the reciprocating screw 10. A transverse limit wheel 13 is rotatably connected to the upper end of the moving block 12. The longitudinal limiting wheel 14, reciprocating screw 10 and pay-off wheel 8 are connected by a second transmission belt 418. The plastic optical fiber body 100 is wound around the outer surface of the take-up wheel 6 and pay-off wheel 8. The fixing rod 11 is slidably connected inside the moving block 12. The first transmission wheel 416, the second transmission wheel 423 and the reciprocating screw 10 are connected by a first transmission belt 417. The pushing inclined plate 415 is set below the sliding plate 209. The plastic optical fiber body 100 is set between the upper cleaning wheel 406 and the lower cleaning wheel 410. The upper gear 408 and the lower gear 411 mesh with each other. The upper fixing plate 405 is fixedly connected to the top of the inside of the fixing frame 401 by the first telescopic rod 403. The second connecting rod 407 is vertically slidably assembled inside the fixing base 1.

[0027] Furthermore, when the telescopic rod 212 pushes the sliding plate 209 backward, the sliding plate 209 disengages from the pressing of the pushing inclined plate 415. Under the push of the third spring 413, the pushing plate 414 and the pushing inclined plate 415 move upward, causing the pushing plate 414 to drive the first sliding frame 402 upward. Simultaneously, as the first sliding frame 402 moves upward, the lower cleaning wheel 410 moves upward to contact the lower side of the plastic optical fiber body 100, while its upper side contacts the upper cleaning wheel 406. The second spring 404 provides elastic push, and the lower gear 411 moves upward while meshing with the upper gear 408. When the pay-off wheel 8 rotates, it drives the reciprocating screw 10 to rotate via the second transmission belt 418, and then drives the second connecting rod 407 to rotate via the first transmission belt 417. The second transmission wheel 423 provides support for the first transmission belt 417, allowing the second connecting rod 407 to slide up and down inside the fixed base 1. The first transmission belt 417 is always taut. When the second connecting rod 407 rotates, it drives the upper cleaning wheel 406 and the lower cleaning wheel 410 to rotate, thereby cleaning the dust on the surface of the plastic optical fiber body 100. The cleaned dust falls into the collection box 425 for collection. When the pay-off wheel 8 drives the reciprocating screw 10 to rotate, the moving block 12 slides left and right on the outer surface of the fixed rod 11, thereby moving with the winding position when the plastic optical fiber body 100 is put in and taken out. This cleaning mechanism 4 reuses the main transmission power of the pay-off wheel 8, eliminating the need for an additional drive motor, thereby reducing equipment failure points and manufacturing costs. The upper and lower cleaning wheels rotate in opposite directions to achieve comprehensive dust removal from the outer wall of the optical fiber. The elastic telescopic rod with spring adapts to various specifications of optical fibers and will not scratch the surface of the optical fiber. The pull-out collection box 425 collects dust in a concentrated manner, preventing impurities from being brought into the integrating sphere, thus avoiding the generation of false scattering signals and significantly reducing the probability of false detection of optical fiber defects.

[0028] Working principle: The plastic optical fiber body 100 to be tested is wound around the outside of the pay-off reel 8 and the take-up reel 6. After the equipment is started, the pay-off reel 8 outputs conveying power, which is transmitted to the reciprocating screw 10 via the second transmission belt 418. The reciprocating screw 10 drives the moving block 12 to take on and take off the plastic optical fiber body 100. The moving block 12 slides left and right on the outer surface of the fixed rod 11, so as to follow the winding position when taking on and taking off the plastic optical fiber body 100. On the other hand, it transmits rotational power to the cleaning mechanism 4 synchronously through the first transmission belt 417, so as to clean the dust on the surface before conveying the plastic optical fiber body 100. In the initial state of loading, the closing mechanism 2 is in the fully open state. After clamping the plastic optical fiber body 100 inside the feeding mechanism 3, it is pushed and extended by the set mechanism. Rod 212 pushes sliding plate 209 backward, and feeding mechanism 3 moves backward from the front end of right detection integrating ball 101 and left detection integrating ball 102. When sliding plate 209 moves backward, it pushes push block 208 to continue moving. Push block 208 drives first gear 202, rotating rod 201 and second gear 203 to rotate by pulling second pulling rack 207. Rotating second gear 203 pulls first pulling rack 204 to move. So when feeding mechanism 3 moves out of left detection integrating ball 102 and right detection integrating ball 101, it pulls the first pulling racks 204 on both sides to move towards the middle. So right detection integrating ball 101 and left detection integrating ball 102 move towards the middle at the same time to form a closed state. At the same time, the main spring 214 inside contracts.

[0029] Before the closing mechanism 2 is closed, the plastic optical fiber body 100 above the feed wheel 8 is passed through the cleaning mechanism 4 and clamped inside the gripper 303. Then, as the closing mechanism 2 closes, the gripper 303 is pulled backward to guide the plastic optical fiber body 100 through. Before the right detection integrating ball 101 and the left detection integrating ball 102 above the closing mechanism 2 close, they drive the feeding mechanism 3 to move backward. Before closing, the plastic optical fiber body 100 is disengaged from the inside of the right detection integrating ball 101 and the left detection integrating ball 102. When the plastic optical fiber body 100 is guided to the rear of the right detection integrating ball 101 and the left detection integrating ball 102, the gripper 303 releases its grip on the plastic optical fiber body 100, so that the plastic optical fiber body 100 can only be pulled backward. When the right detection integrating ball 101 and the left detection integrating ball 102 close, the plastic optical fiber body 100 is just clamped inside the optical fiber port 105.

[0030] When the pusher rod 212 pushes the sliding plate 209 backward, the sliding plate 209 disengages from the pusher ramp 415, and thus, under the push of the third spring 413, the pusher plate 414 and the pusher ramp 415 move upward. The pusher plate 414 drives the first sliding frame 402 to move upward. At the same time as the first sliding frame 402 moves upward, the lower cleaning wheel 410 moves upward and comes into contact with the lower side of the plastic optical fiber body 100, while the upper side comes into contact with the upper cleaning wheel 406. The second spring 404 provides elastic push, and the lower gear 411 moves upward and meshes with the upper gear 408. When the pay-off reel 8 rotates, it drives the reciprocating screw 10 to rotate via the second transmission belt 418, and then drives the second connecting rod 407 to rotate via the first transmission belt 417. The second transmission wheel 423 provides support for the first transmission belt 417, so that the first transmission belt 417 is always taut when the second connecting rod 407 slides up and down inside the fixed base 1. When the second connecting rod 407 rotates, it drives the upper cleaning wheel 406 and the lower cleaning wheel 410 to rotate, thereby cleaning the dust on the surface of the plastic optical fiber body 100. The cleaned dust falls into the collection box 425 for collection.

[0031] After being cleaned by the cleaning mechanism 4, the plastic optical fiber body 100 is fed into the closed cavity of the right detection integrating sphere 101 and the left detection integrating sphere 102. The light head 106 emits a detection light source towards the plastic optical fiber body 100. The integrating sphere collects the scattered light signal generated by the side wall of the plastic optical fiber body 100 to identify internal cracks, cross-sectional defects and other defects in the plastic optical fiber body 100. After completing the optical inspection, the plastic optical fiber body 100 is continuously conveyed backward. After being limited and guided by the transverse limiting wheel 13 and the longitudinal limiting wheel 14, it is wound onto the take-up wheel 6 to complete the finished product winding. The entire set of equipment realizes the synchronous linkage operation of optical fiber feeding, outer wall cleaning, optical defect detection and finished product winding.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A plastic optical fiber transmission quality testing device, comprising a fixed base (1), a right detection integrating sphere (101), a left detection integrating sphere (102), a wire feeding frame (7), a wire feeding reel (8), and a plastic optical fiber body (100) wound on the outer surface of the wire feeding reel (8), characterized in that: The upper surface of the fixed base (1) is provided with a closing mechanism (2) for detecting defects such as internal cracks and cross-sectional defects in the plastic optical fiber body (100). The inside of the closing mechanism (2) is provided with a feeding mechanism (3) for guiding and conveying the plastic optical fiber body (100). The upper surface of the fixed base (1) is provided with a cleaning mechanism (4) for cleaning the outer surface of the plastic optical fiber body (100). The closing mechanism (2) and the feeding mechanism (3) are mechanically linked. The opening and closing action of the closing mechanism (2) synchronously controls the cleaning wheel of the cleaning mechanism (4) to close and open.

2. The plastic optical fiber transmission quality detection device according to claim 1, characterized in that: The closing mechanism (2) includes a rotating rod (201) rotatably connected to the upper surface of the fixed base (1). A first gear (202) and a second gear (203) are fixedly connected to the outer surface of the rotating rod (201). A first pulling gear (204) is slidably connected to the upper surface of the fixed base (1). A connecting frame (205) is fixedly connected to the upper surface of the first pulling gear (204). A dustproof chamber (206) is fixedly connected to the upper surface of the fixed base (1). A pushing block (208) is slidably connected to the upper surface of the fixed base (1). (208) has a second pulling toothed rod (207) fixedly connected to its rear end. A support rod (210) is fixedly connected to the upper surface of the fixed base (1). A third guide wheel (211) is rotatably connected to the upper surface of the support rod (210). A push telescopic rod (212) is fixedly connected to the side surface of the support rod (210). A sliding plate (209) is fixedly connected to one end of the push telescopic rod (212). A main push rod (213) is fixedly connected inside the connecting frame (205). A main spring (214) is sleeved on the outer surface of the main push rod (213).

3. The plastic optical fiber transmission quality detection device according to claim 2, characterized in that: The feeding mechanism (3) includes a first connecting rod (301) fixedly connected to the upper surface of the sliding plate (209), a first sliding rod (302) slidably connected to the upper end of the first connecting rod (301), a gripper (303) rotatably connected to the upper surface of the first sliding rod (302), a second sliding rod (304) fixedly connected to the bottom end of the first sliding rod (302), and a first spring (305) sleeved on the outer surface of the second sliding rod (304).

4. The plastic optical fiber transmission quality detection device according to claim 1, characterized in that: The cleaning mechanism (4) includes a fixed frame (401) fixedly connected to the upper surface of the fixed base (1). A first sliding frame (402) is slidably connected inside the fixed frame (401). A polishing head (106) is fixedly connected to the upper surface of the first sliding frame (402). A first telescopic rod (403) is fixedly connected to the upper surface of the fixed frame (401). A second spring (404) is sleeved on the outer surface of the first telescopic rod (403). An upper fixed plate (405) is fixedly connected to the bottom end of the first telescopic rod (403). An upper cleaning wheel (406) is rotatably connected to the front end of the upper fixed plate (405). A second connecting rod is fixedly connected to one end of the upper cleaning wheel (406). The rod (407) has an upper gear (408) fixedly connected to the other end of the upper sweeping wheel (406). A side baffle (409) is fixedly connected to the upper surface of the first sliding frame (402). A lower sweeping wheel (410) is rotatably connected to the front end of the first sliding frame (402). A lower gear (411) is fixedly connected to one end of the lower sweeping wheel (410). A third telescopic rod (412) is fixedly connected inside the fixed base (1). A third spring (413) is sleeved on the outer surface of the third telescopic rod (412). A push plate (414) is fixedly connected to the top end of the third telescopic rod (412). A push inclined plate (415) is fixedly connected to the upper surface of the push plate (414).

5. The plastic optical fiber transmission quality detection device according to claim 4, characterized in that: The outer surface of the second connecting rod (407) is fixedly connected to the first transmission wheel (416), the outer surface of the first transmission wheel (416) is connected to the first transmission belt (417), the outer surface of the wire feeding wheel (8) is connected to the second transmission belt (418), the upper surface of the fixed base (1) is fixedly connected to the fixed block (419), the interior of the fixed block (419) is slidably connected to the third sliding rod (420), the outer surface of the third sliding rod (420) is sleeved with the fourth spring (421), the upper end of the third sliding rod (420) is fixedly connected to the second sliding frame (422), the interior of the second sliding frame (422) is rotatably connected to the second transmission wheel (423), the upper surface of the fixed base (1) is fixedly connected to the waste rack (424), and the interior of the waste rack (424) is slidably connected to the collection box (425).

6. The plastic optical fiber transmission quality detection device according to claim 5, characterized in that: The upper surface of the fixed base (1) is fixedly connected to a take-up frame (5) and a control panel (9). The take-up frame (5) is equipped with a take-up wheel (6). The inside of the pay-off frame (7) is rotatably connected to a reciprocating screw (10). The inside of the pay-off frame (7) is fixedly connected to a fixed rod (11). The outer surface of the reciprocating screw (10) is threaded with a moving block (12). The upper end of the moving block (12) is rotatably connected to a transverse limiting wheel (13) and a longitudinal limiting wheel (14).

7. The plastic optical fiber transmission quality detection device according to claim 6, characterized in that: The reciprocating screw (10) and the pay-off reel (8) are connected by a second transmission belt (418). The plastic optical fiber body (100) is wound around the outer surface of the take-up reel (6) and the pay-off reel (8). The fixed rod (11) is slidably connected inside the moving block (12). The first transmission wheel (416), the second transmission wheel (423), and the reciprocating screw (10) are connected by a first transmission belt (417).

8. The plastic optical fiber transmission quality detection device according to claim 2, characterized in that: The second gear (203) meshes with the first pull rack (204), and the first gear (202) meshes with the second pull rack (207). The right detection integrating sphere (101) and the left detection integrating sphere (102) are fixed above the connecting frame (205). A sealing strip (103) is fixedly connected to the side surface of the right detection integrating sphere (101), and a sealing groove (104) is opened on the side surface of the left detection integrating sphere (102). Optical fiber ports (105) are fixedly connected to the corresponding sides of the left detection integrating sphere (102) and the right detection integrating sphere (101).

9. The plastic optical fiber transmission quality detection device according to claim 3, characterized in that: The gripper (303) is clamped on both sides of the plastic optical fiber body (100), the second sliding rod (304) is slidably connected inside the first connecting rod (301), and the first spring (305) is disposed between the first connecting rod (301) and the first sliding rod (302).

10. The plastic optical fiber transmission quality detection device according to claim 7, characterized in that: The pushing inclined plate (415) is located below the sliding plate (209), the plastic optical fiber body (100) is located between the upper cleaning wheel (406) and the lower cleaning wheel (410), the upper gear (408) meshes with the lower gear (411), the upper fixing plate (405) is fixedly connected to the top of the inside of the fixing frame (401) by the first telescopic rod (403), and the second connecting rod (407) is vertically slidably assembled inside the fixing base (1).

Images