A grinding device applied to an sn connector

Abstract

The application relates to the technical field of SN connector production, and discloses a grinding device applied to an SN connector, which comprises two independently arranged grinding discs; the grinding disc comprises a disc body and a plurality of limiting pieces, the plurality of limiting pieces are uniformly arranged on the disc body at intervals, and the bottom of each limiting piece is provided with a through hole; the limiting pieces are used for fixing the SN connector, so that the to-be-ground fiber stubs pass through the through holes. The first fiber stub and the second fiber stub of the completed assembled connector are respectively ground through the grinding device, the assembly production efficiency of the connector is effectively improved, the foolproof effect is good, the whole production process does not need to be repeatedly disassembled, the risk of bare optical fiber breakage is avoided, and the product production yield and reliability are effectively improved.

Description

Technical Field

[0001] This application belongs to the field of SN connector manufacturing technology, and specifically relates to a grinding device used in SN connectors. Background Technology

[0002] In the field of fiber optic communication, the SN connector, as a connection device that combines the advantages of miniaturization and low return loss, is widely used in high-density data transmission scenarios. The two ferrules of the SN connector are angled in opposite directions, and this special angle design places specific requirements on the connector's manufacturing process. Currently, the grinding process for this type of special angle SN connector mainly adopts the following two methods: Firstly, a bare ferrule grinding process is used, which involves grinding each ferrule individually before assembling it into the connector housing according to a preset correct angle. However, this method relies on manual or mechanical precision alignment of the ferrule, resulting in low assembly efficiency and a lack of effective error-proofing. It is also highly susceptible to incorrect ferrule orientation due to operational errors, affecting the connector's optical performance. Secondly, a post-assembly grinding process is used, where the two ferrules are pre-installed into the connector housing, and then the assembled unit is simultaneously ground. Since the angles of the two ferrules naturally tend to align during grinding, ferrules with incorrect angles must be removed from the housing after grinding and reassembled with the correct angles. This disassembly and reassembly process requires repeated handling of the ferrules, significantly increasing process complexity and labor costs. Furthermore, since SN connectors typically use bare optical fibers with an outer diameter of 250μm, these fibers are easily stretched and bent during disassembly and reassembly, greatly increasing the risk of fiber breakage and severely impacting product yield and reliability. Utility Model Content To address the shortcomings of the prior art, this application provides a polishing device for SN connectors. By using independently set first and second polishing discs, the first and second ferrules of the assembled connector are polished separately by the polishing device, which effectively improves the assembly and production efficiency of the connector, has a good error-proof effect, and eliminates the need for repeated disassembly and assembly during the overall production process, avoiding the risk of fiber breakage in bare optical fibers, and effectively improving product yield and reliability.

[0003] The technical effects to be achieved in this application are realized through the following aspects: This application provides a polishing apparatus for an SN connector. The SN connector includes a housing, a plurality of springs, and a first and a second ferrule arranged in parallel. The springs are disposed inside the housing, and the first and second ferrules pass through the housing and are respectively connected to the springs. The housing has a narrow key on one side corresponding to the first ferrule and a wide key on one side corresponding to the second ferrule. The polishing apparatus includes a first polishing disc and a second polishing disc that are independently arranged. The first grinding disc includes a first disc body and a plurality of first limiting members. The plurality of first limiting members are evenly arranged at intervals on the first disc body. The bottom of the first limiting member is provided with a first through hole. The first limiting member is used to fix the SN connector so that the first ferrule passes through the first through hole. The first grinding disc is used to assist in batch grinding of the first ferrule. The second grinding disc includes a second disc body and a plurality of second limiting members. The plurality of second limiting members are evenly spaced on the second disc body, and the bottom of the second limiting member is provided with a second through hole. The second limiting member is used to fix the SN connector so that the second ferrule passes through the second through hole. The second grinding disc is used to assist in the batch grinding of the second ferrule.

[0004] In some implementations, the first limiting member is provided with a first limiting cavity adapted to the size of the outer shell, the inner wall of the first limiting cavity near the first through hole is provided with a first narrow groove adapted to the narrow key, and the inner wall of the first limiting cavity opposite to the first narrow groove is provided with a first wide groove adapted to the wide key.

[0005] In some implementations, the bottom of the first limiting cavity is provided with a first groove, which is arranged in parallel with the first through hole, and the first groove is adapted to the second insert.

[0006] In some implementations, the outer side of the outer shell is provided with a slot, and the inner wall of the first limiting cavity is provided with a first buckle that is adapted to the slot.

[0007] In some implementations, the second limiting member is provided with a second limiting cavity adapted to the size of the outer shell, the inner wall of the second limiting cavity near the second through hole is provided with a second wide groove adapted to the wide key, and the inner wall of the second limiting cavity opposite to the second wide groove is provided with a second narrow groove adapted to the narrow key.

[0008] In some implementations, the bottom of the second limiting cavity is provided with a second groove, which is arranged in parallel with the second through hole, and the second groove is adapted to the first insert.

[0009] In some implementations, the outer side of the outer shell is provided with a slot, and the inner wall of the second limiting cavity is provided with a second buckle that is adapted to the slot.

[0010] In some implementations, the first limiting member is inclinedly connected to the first disc body; the second limiting member is inclinedly connected to the second disc body.

[0011] In some implementations, notches are provided at the four corners of both the first disk and the second disk.

[0012] In some implementations, both the first disk and the second disk have through holes at their middle positions.

[0013] In summary, this application has at least the following advantages: The polishing apparatus for SN connectors provided in this application uses a first polishing disc to expose the first ferrule and hide the second ferrule in a batch polishing process. After polishing the first ferrule, a second polishing disc is used to expose the second ferrule and hide the first ferrule again, and the second ferrule is polished in batches. This allows for rapid polishing of ferrules with opposite angles in a completed connector, avoiding the use of bare ferrule polishing or repeated disassembly and assembly methods in production. This greatly improves the assembly and production efficiency of connectors, effectively reduces the risk of incorrect ferrule angle orientation due to operation, and has a good error-proof effect. Furthermore, the entire production process does not require repeated disassembly and assembly, avoiding the risk of fiber breakage in bare optical fibers, and effectively improving product yield and reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the SN connector in this application.

[0015] Figure 2 This is a schematic diagram of the structure of the first grinding disc in Embodiment 1 of this application.

[0016] Figure 3 This is a cross-sectional view of the first grinding disc in Embodiment 1 of this application.

[0017] Figure 4 This is a schematic diagram of the structure of the second grinding disc in Embodiment 1 of this application.

[0018] Figure 5 This is a cross-sectional view of the second grinding disc in Embodiment 1 of this application.

[0019] Figure 6 for Figure 2 A magnified structural diagram of part A in the middle.

[0020] Figure 7 for Figure 3A magnified structural diagram of part B.

[0021] Figure 8 for Figure 4 A magnified structural diagram of section C.

[0022] Figure 9 for Figure 5 A magnified structural diagram of part D in the middle.

[0023] Figure 10 This is a side view of the first grinding disc in Embodiment 3 of this application.

[0024] Figure 11 This is a schematic diagram showing the structure of the second disk in Embodiment 3 of this application.

[0025] Marked in the image: 1. SN connector, 11. Housing, 12. First ferrule, 13. Second ferrule, 14. Narrow key, 15. Wide key, 16. Slot; 2. First grinding disc, 21. First disc body, 22. First limiting member, 221. First limiting cavity, 222. First narrow slot, 223. First wide slot, 224. First groove, 225. First latch, 23. First through hole; 3. Second grinding disc, 31. Second disc body, 311. Notch, 312. Through hole, 32. Second limiting member, 321. Second limiting cavity, 322. Second wide slot, 323. Second narrow slot, 324. Second groove, 325. Second latch, 33. Second through hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this application, not all embodiments.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0028] Example 1: Please see the appendix Figure 1-5The present application discloses a grinding apparatus for an SN connector. The SN connector 1 includes a housing 11, multiple springs, and a first ferrule 12 and a second ferrule 13 arranged in parallel. The springs are located inside the housing 11, and the first ferrule 12 and the second ferrule 13 pass through the housing 11 and are respectively connected to the springs. A narrow key 14 is provided on the side of the housing 11 corresponding to the first ferrule 12, and a wide key 15 is provided on the side of the housing 11 corresponding to the second ferrule 13. The grinding apparatus includes a first grinding disc 2 and a second grinding disc 3 that are independently arranged. The first grinding disc 2 includes a first disc body 21 and a plurality of first limiting members 22. The plurality of first limiting members are evenly arranged at intervals on the first disc body 21, and the bottom of the first limiting member is provided with a first through hole 23. The first limiting members are used to fix the SN connector 1, so that the first ferrule 12 passes through the first through hole 23. The first grinding disc 2 is used for batch auxiliary grinding of the first ferrule 12. The second grinding disc 3 includes a second disc body 31 and a plurality of second limiting members 32. Several second limiting members 32 are evenly arranged on the second disc body 31 at intervals, and the bottom of the second limiting member 32 is provided with a second through hole 33; the second limiting member 32 is used to fix the SN connector 1, so that the second ferrule 13 passes through the second through hole 33; the second grinding disc 3 is used to assist in the batch grinding of the second ferrule 13.

[0029] In this embodiment, the grinding device places the assembled SN connector 1 in the first limiting body of the first grinding disc 2 for fixation, so that the first ferrule 12 passes through the first through hole 23. The second ferrule 13 is blocked by the first limiting body and shortened by the spring. That is, the second ferrule 13 is against the inner wall of the first limiting body, so that only the first ferrule 12 is exposed in the SN connector 1 placed in the first grinding disc 2. After placement, the first grinding disc 2 is placed in the four-corner pressure grinding machine, and the batch of first ferrules 12 are subjected to the grinding process of angle grinding, rough grinding, fine grinding, light grinding and polishing in sequence. After the first ferrule 12 is polished, the SN connector 1 is removed from the first limiting body. Then, the fiber end face of the polished first ferrule 12 is inspected using a 400x end face machine to ensure that its end face polishing effect meets the industry standard IEC-61300-3-35. The fiber geometric parameters of the polished first ferrule 12 are inspected using an interferometer to ensure that its geometric parameters fully comply with the industry standard IEC-61755-3-2 FOR APC.

[0030] Subsequently, the SN connector 1, after the first ferrule 12 has been ground, is placed in the second limiting body in the second grinding disc 3 and fixed, so that the second ferrule 13 passes through the second through hole 33. The first ferrule 12 is blocked by the second limiting body and shortened by the spring, that is, the first ferrule 12 is against the inner wall of the second limiting body, so that the SN connector 1 placed in the second grinding disc 3 only exposes the second ferrule 13. After placement, the second grinding disc 3 is placed in the four-corner pressure grinding machine, and the batch of second ferrules 13 are subjected to angle grinding, rough grinding, fine grinding, light grinding and polishing grinding processes in sequence. After polishing the second ferrule 13, remove the SN connector 1 from the second limiting body. Then, use a 400x end-face machine to inspect the fiber end face of the polished second ferrule 13, ensuring that its end-face polishing effect meets the industry standard IEC-61300-3-35. Simultaneously, use the 400x end-face machine to check that the end face of the first ferrule 12 is undamaged. Finally, use an interferometer to check the fiber geometry parameters of the polished second ferrule 13, ensuring that its geometry parameters fully comply with the industry standard IEC-61755-3-2 FOR APC. At this point, the polishing of the ferrules in the SN connector 1 is complete. It is understood that the polishing order of the first polishing disc 2 and the second polishing disc 3 is not critical and can be flexibly applied according to specific production conditions.

[0031] The above technical solution allows for direct grinding of the assembled SN connector 1, eliminating the need for pre-grinding the bare ferrules before assembly, and also eliminating the need for a pre-assembled grinding process followed by ferrule disassembly and reassembly. This effectively simplifies the production process of the SN connector 1, shortens production time, and improves assembly efficiency. Furthermore, using the aforementioned grinding disc for assisted grinding reduces manual intervention regarding the angle and orientation of the first ferrule 12 and the second ferrule 13, providing excellent error prevention. In addition, the entire production process eliminates the need for repeated disassembly and reassembly, avoiding the risk of fiber breakage and effectively improving product yield and reliability.

[0032] Example 2: The difference between this embodiment and Embodiment 1 is that, please refer to... Figure 6 In this embodiment, the first limiting member is provided with a first limiting cavity 221 that is adapted to the size of the outer shell 11. The inner wall of the first limiting cavity 221 near the first through hole 23 is provided with a first narrow groove 222 that is adapted to the narrow key 14. The inner wall of the first limiting cavity 221 opposite to the first narrow groove 222 is provided with a first wide groove 223 that is adapted to the wide key 15.

[0033] In this embodiment, the first limiting body, through the setting of the first narrow groove 222 and the first wide groove 223, enables the SN connector 1 to be stably embedded in the first limiting cavity 221, thereby improving the firmness and stability of the SN connector 1 in the first limiting member. At the same time, it is also easy to understand that the first grinding disc 2 is used to assist in the grinding of the first ferrule 12, ensuring the accuracy of the grinding and avoiding confusion.

[0034] In some embodiments, the bottom of the first limiting cavity 221 is provided with a first groove 224, which is arranged side by side with the first through hole 23, and the first groove 224 is adapted to the second ferrule 13. Through this arrangement, the second ferrule 13 is embedded in the first groove 224, ensuring the stability of the retraction of the second ferrule 13. This allows the SN connector 1 to limit the second ferrule 13 to a certain extent during the grinding process, thus providing protection, reducing wear between the second ferrule 13 and the inner wall of the first limiting cavity 221, and ensuring the appearance quality of the second ferrule 13.

[0035] In some embodiments, see Figure 7 The outer side of the outer shell 11 is provided with a slot, and the inner wall of the first limiting cavity 221 is provided with a first buckle 225 that matches the slot. With this setting, when the outer shell 11 of the SN connector 1 is inserted into the first limiting cavity 221, the first buckle 225 is engaged in the slot, thereby ensuring the stability of the SN connector 1 embedded in the first limiting cavity 221, ensuring the stability of the subsequent grinding process, and achieving high precision in grinding.

[0036] Example 3: The difference between this embodiment and Embodiment 2 is that, please refer to... Figure 8 In this embodiment, the second limiting member 32 is provided with a second limiting cavity 321 that is adapted to the size of the outer shell 11. The inner wall of the second limiting cavity 321 near the second through hole 33 is provided with a second wide groove 322 that is adapted to the wide key 15. The inner wall of the second limiting cavity 321 opposite to the second wide groove 322 is provided with a second narrow groove 323 that is adapted to the narrow key 14.

[0037] In this embodiment, the second limiting body, through the setting of the second narrow groove 323 and the second wide groove 322, enables the SN connector 1 to be stably embedded in the second limiting cavity 321, improving the firmness and stability of the SN connector 1 in the second limiting member 32. At the same time, it is also easier to clearly understand that the second grinding disc 3 is used to assist in the grinding of the second ferrule 13, ensuring the accuracy of grinding, making it easier for operators to grind different ferrules at different angles, avoiding confusion, reducing the probability of errors, and improving the accuracy of operation.

[0038] In some embodiments, the bottom of the second limiting cavity 321 is provided with a second groove 324, which is arranged side by side with the second through hole 33, and the second groove 324 is adapted to the first ferrule 12. Through this arrangement, the first ferrule 12 is embedded in the second groove 324, ensuring the stability of the first ferrule 12's retraction. This allows the SN connector 1 to limit the first ferrule 12 to a certain extent during the grinding process, reducing wear between the first ferrule 12 and the inner wall of the second limiting cavity 321, ensuring the appearance quality of the first ferrule 12, and improving the protection capability of the first ferrule 12.

[0039] In some embodiments, see Figure 9 The outer side of the outer shell 11 is provided with a slot, and the inner wall of the second limiting cavity 321 is provided with a second buckle 325 that matches the slot. With this setting, when the outer shell 11 of the SN connector 1 is inserted into the second limiting cavity 321, the second buckle 325 is engaged in the slot, thereby ensuring the stability of the SN connector 1 embedded in the second limiting cavity 321, ensuring the stability of the subsequent grinding process, and ensuring the grinding accuracy.

[0040] In some embodiments, such as Figure 10 The first limiting member is inclinedly connected to the first disc 21; the second limiting member 32 is inclinedly connected to the second disc 31. With this setting, when the SN connector 1 is inserted into the limiting member, the ferrule is also inclined because the limiting member is in an inclined state, which makes it easier to grind the ferrule at different angles without adjusting the angle of the grinding tool, effectively simplifying the grinding action and improving the accuracy of the grinding angle.

[0041] In some embodiments, see Figure 11 Both the first disc 21 and the second disc 31 have notches 311 at their four corners. This design allows the notches 311 to match the pressure posts at the four corners, ensuring the stability of the grinding discs during the grinding process and thus improving the accuracy of the grinding.

[0042] In some embodiments, both the first disc body 21 and the second disc body 31 are provided with through holes 312 at their middle positions. The through holes 312 facilitate the operator's handling of the grinding disc, improving ease of handling, and also reduce the overall weight of the grinding disc, achieving portability.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In this application, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" a first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] Although the description of this application has been made in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A grinding apparatus for an SN connector, the SN connector (1) comprising a housing (11), a plurality of springs, and a first ferrule (12) and a second ferrule (13) arranged in parallel, the springs being disposed within the housing (11), the first ferrule (12) and the second ferrule (13) passing through the housing (11) and respectively connected to the springs; the housing (11) having a narrow key (14) on one side corresponding to the first ferrule (12), and a wide key (15) on one side corresponding to the second ferrule (13); characterized in that, Includes a first grinding disc (2) and a second grinding disc (3) that are set independently; The first grinding disc (2) includes a first disc body (21) and a plurality of first limiting members (22). The plurality of first limiting members are evenly arranged on the first disc body (21) at intervals. The bottom of the first limiting member is provided with a first through hole (23). The first limiting member is used to fix the SN connector so that the first ferrule (12) passes through the first through hole (23). The first grinding disc (2) is used to assist in the batch grinding of the first ferrule (12). The second grinding disc (3) includes a second disc body (31) and a plurality of second limiting members (32). The plurality of second limiting members (32) are evenly spaced on the second disc body (31). The bottom of the second limiting member (32) is provided with a second through hole (33). The second limiting member (32) is used to fix the SN connector so that the second ferrule (13) passes through the second through hole (33). The second grinding disc (3) is used to assist in the batch grinding of the second ferrule (13).

2. The polishing apparatus for SN connectors according to claim 1, characterized in that, The first limiting member is provided with a first limiting cavity (221) that is adapted to the size of the outer shell (11). The inner wall of the first limiting cavity (221) near the first through hole (23) is provided with a first narrow groove (222) that is adapted to the narrow key (14). The inner wall of the first limiting cavity (221) opposite to the first narrow groove (222) is provided with a first wide groove (223) that is adapted to the wide key (15).

3. The polishing apparatus for SN connectors according to claim 2, characterized in that, The bottom of the first limiting cavity (221) is provided with a first groove (224), the first groove (224) is arranged in parallel with the first through hole (23), and the first groove (224) is adapted to the second insert (13).

4. The polishing apparatus for SN connectors according to claim 2, characterized in that, The outer side of the outer shell (11) is provided with a slot, and the inner wall of the first limiting cavity (221) is provided with a first buckle (225) that is adapted to the slot.

5. The polishing apparatus for SN connectors according to claim 1, characterized in that, The second limiting member (32) is provided with a second limiting cavity (321) that is adapted to the size of the outer shell (11). The inner wall of the second limiting cavity (321) near the second through hole (33) is provided with a second wide groove (322) that is adapted to the wide key (15). The inner wall of the second limiting cavity (321) opposite to the second wide groove (322) is provided with a second narrow groove (323) that is adapted to the narrow key (14).

6. The polishing apparatus for SN connectors according to claim 5, characterized in that, The bottom of the second limiting cavity (321) is provided with a second groove (324), the second groove (324) and the second through hole (33) are arranged side by side, and the second groove (324) is adapted to the first insert (12).

7. The polishing apparatus for SN connectors according to claim 5, characterized in that, The outer side of the outer shell (11) is provided with a slot, and the inner wall of the second limiting cavity (321) is provided with a second buckle (325) that is adapted to the slot.

8. The polishing apparatus for SN connectors according to claim 1, characterized in that, The first limiting member is inclinedly connected to the first disc body (21); the second limiting member (32) is inclinedly connected to the second disc body (31).

9. The polishing apparatus for SN connectors according to claim 1, characterized in that, The first disc (21) and the second disc (31) are provided with notches (311) at the four corners.

10. The polishing apparatus for SN connectors according to claim 1, characterized in that, Both the first disc body (21) and the second disc body (31) have through holes (312) at their middle positions.

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