Small-size core-inserted optical fiber collimator, assembly equipment and assembly method

Abstract

The present invention relates to an optical fiber communication technology, specifically a small-size core-inserted optical fiber collimator, assembly equipment and assembly method, the collimator includes a ball lens, a ceramic core, and a glass tube; the ball lens includes an input end with an angled end face, and the ceramic core includes a butt end with an angled end face; the input end of the ball lens extends from one end of the glass tube into the glass tube and is fixed to the glass tube, and the butt end of the ceramic core extends from the other end of the glass tube into the glass tube and is fixed to the glass tube, and the input end and the butt end are parallel to each other; an optical fiber for light transmission is also fixed in the center of the ceramic core, and there is a gap between the input end of the ball lens and the butt end of the ceramic core. This small-size core-inserted optical fiber collimator can be directly connected to the LC connector on the jumper without the need for optical fiber fusion splicing, has a smaller size, is simpler to manufacture, is convenient and practical, and has excellent performances such as low insertion loss, high return loss, and high reliability.

Description

Technical Field

[0001] The invention relates to an optical fiber communication technology, in particular to a small-size core-inserted optical fiber collimator, an assembly device and an assembly method. Background Art

[0002] With the rapid development of optical fiber communication, the international demand for optical passive components has also increased dramatically. In the working process of optical components such as optical isolators, optical circulators, optical switches, optical attenuators, and optical wavelength division multiplexers, the collimation of Gaussian beams is required to be very high, so the optical fiber collimator was introduced. The function of the optical collimator is to collimate the divergent light beam emitted from the optical fiber into a nearly parallel light beam with a very small divergence angle or to converge the parallel light beam into the optical fiber, so as to improve the coupling efficiency of the device, which can achieve light transmission of tens or even hundreds of millimeters without a large insertion loss. Therefore, the optical fiber collimator is an upstream component of the optical communication original and an essential component of the optical communication system.

[0003] In the development of optical passive components in recent years, the size is becoming more and more miniaturized, the internal structure is compact, and the application is flexible. Figure 1 The figure shows an existing optical fiber collimator, which is composed of a lens, a glass tube, a capillary, an optical fiber and a connector. However, due to the presence of the optical fiber line and the connector, the collimator is large in size, the optical fibers are easily tangled together, it is not convenient to use, and it is easy to cause fiber breakage and fiber loss. Summary of the invention

[0004] The object of the present invention is to provide a small-size core-inserted optical fiber collimator, an assembly device and an assembly method to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A small-size ferrule-type optical fiber collimator comprises a ball lens, a ceramic ferrule, and a glass tube;

[0007] The ball lens includes an input end with an oblique angle at the end surface, the ceramic ferrule includes a butt end with an oblique angle at the end surface, and the other end of the ceramic ferrule is a connecting end, which extends out of the glass tube;

[0008] The input end of the ball lens extends from one end of the glass tube into the glass tube and is fixed to the glass tube, the butt end of the ceramic ferrule extends from the other end of the glass tube into the glass tube and is fixed to the glass tube, and the input end and the butt end are parallel to each other;

[0009] An optical fiber for light transmission is also fixed in the center of the ceramic ferrule, and a gap is provided between the input end of the ball lens and the butt end of the ceramic ferrule.

[0010] An assembly device for a small-size ferrule-type optical fiber collimator: the connection end of the ceramic ferrule is fixedly matched with a connecting column, and the ceramic ferrule and the connecting column are fixedly matched to form a coaxial and same-diameter ferrule assembly;

[0011] The assembly device comprises a frame structure, in which a positioner is fixedly arranged, and a cylindrical positioning cavity for accommodating the ball lens, the ceramic ferrule, and the glass tube is provided through the center of the positioner; positioning plates are respectively provided on both sides of the positioner to slide along the radial direction of the cylindrical positioning cavity;

[0012] Both sides of the frame structure are provided with limiting components for preventing one end of the positioning plate from being separated from the cylindrical positioning cavity;

[0013] One end of the positioning plate extending into the positioner is a calibration surface. After the input end of the ball lens extends from one end of the cylindrical positioning cavity into the cylindrical positioning cavity, it is closely attached to the calibration surface of one of the positioning plates extending into the cylindrical positioning cavity; after the butt end of the ceramic ferrule extends from the other end of the cylindrical positioning cavity into the cylindrical positioning cavity, it is closely attached to the calibration surface of another positioning plate extending into the cylindrical positioning cavity, so that the input end and the butt end are parallel and facing each other, and the distance between the two is consistent with the predetermined gap;

[0014] Two sets of locking components are also arranged on the frame structure, and the locking components are used to fix the ceramic ferrule and the ball lens when the butt end and the input end are parallel and face each other and reach a predetermined gap;

[0015] An assembly feed piece is slidably provided on the ferrule assembly, the limiting assembly cooperates with the assembly feed piece, and the assembly feed piece is used to push the glass tube slidably sleeved on the ferrule assembly further into the cylindrical positioning cavity to encapsulate the fixed ceramic ferrule and the ball lens;

[0016] In the process of pushing the glass tube, the assembly feeding member first drives the limiting component to move, releases the blocking of the positioning plate by the limiting component, and then drives the calibration surface of the positioning plate to be withdrawn from the cylindrical positioning cavity.

[0017] The assembly device of the small-size core-inserted optical fiber collimator as described above: the frame structure includes two trusses parallel to each other, one end of the two trusses is fixed by a first side plate, and the other end of the two trusses is fixed by a second side plate;

[0018] and fixing a bracket on one of the trusses, the positioner being fixed on the bracket;

[0019] Both sides of the positioner are fixed with a sleeve shell, and the positioning plate and the sleeve shell are slidably matched;

[0020] The limiting assembly includes a receiving member and a limiting member, wherein the receiving member is horizontally arranged and fixed to the first side plate and the truss; the limiting member and the receiving member are slidably matched;

[0021] A through slot is provided in the center of the limiting member.

[0022] The assembly equipment of the small-size core-inserted optical fiber collimator as described above: a fixing piece is fixedly arranged on the assembly feed piece, and a lifting piece is fixed on the fixing piece;

[0023] A triangular piece is fixed to one side of the positioning plate extending out of the cylindrical positioning cavity toward the assembly feed piece, and a triangular tip is provided at one end of the lifting piece toward the accommodating piece;

[0024] A protrusion is integrally formed on one end of the lifting member adjacent to the fixing member.

[0025] The assembly device of the small-size ferrule-type optical fiber collimator as described above: the locking assembly comprises a restriction ring, a locking disk rotatably matched with the restriction ring, and a matching block connected with the locking disk;

[0026] A plurality of rollers are rollingly engaged with the inner wall of the limiting ring at equal intervals along the circumference, a circle of raceways is provided on the locking disk, and the rollers are rollingly engaged with the raceways;

[0027] A volute gear ring is integrally provided on one surface of the locking disk, and the matching block is meshed with the volute gear ring; and an insertion rod is fixed on the outer side of the matching block, and the insertion rod is arranged along the radial direction of the locking disk;

[0028] The limiting ring is provided with a limiting hole, and the insert rod is slidably matched with the limiting hole; a rubber block is fixedly embedded in the inner side of the matching block;

[0029] The limiting ring in one set of locking assemblies is fixed to the positioner, and the limiting ring in the other set of locking assemblies is fixed to the mounting member, and the mounting member is fixed to one of the trusses.

[0030] The assembly equipment of the small-size core-inserted optical fiber collimator as described above: a longitudinal beam is fixed between the two trusses, a circle of worm teeth is formed on the outer periphery of the locking disk, a worm is rotatably arranged on the longitudinal beam, the worm is engaged with a circle of worm teeth, and a locking wheel is fixed at one end of the worm.

[0031] The assembly equipment of the small-size ferrule-type optical fiber collimator as described above: the ceramic ferrule and the connecting column are fixedly matched by a snap-fit ​​assembly to form a ferrule assembly;

[0032] An inner cavity is provided inside the connecting column, and the clamping assembly comprises a sliding member slidably provided in the inner cavity, an extruding member connected to the sliding member, and a locking member;

[0033] The connecting end of the ceramic ferrule is provided with a plurality of locking grooves along the circumference, and the locking grooves are adapted to the locking member;

[0034] The extrusion piece includes a tubular portion and a tail plate, a sliding cavity is also provided in the connecting column, and the tail plate is slidably arranged in the sliding cavity; an active cavity is also provided inside the end of the connecting column that is connected to the ceramic ferrule, and the sliding cavity is connected to the active cavity through an extrusion groove;

[0035] The tubular portion is slidably arranged in the extrusion groove, one end of the tubular portion away from the tail plate is a wedge surface, and the locking member is movably arranged in the movable cavity;

[0036] A guide groove and an elastic cavity are also provided in the connecting column, and both the guide groove and the elastic cavity are in conduction with the movable cavity; a guide column is fixed on the locking member, and the guide column is slidably matched with the guide groove, and a spring is provided in the elastic cavity, and the spring is kept compressed, and one end of the spring is in contact with the locking member;

[0037] A plurality of insertion channels are arranged in the connecting column, a push rod is slidably arranged in the insertion channel, one end of the push rod is fixed to the sliding member, and the other end is fixed to the tail plate;

[0038] The end of the locking member extending out of the movable cavity has triangular teeth, and the other end of the locking member has a reverse wedge surface, which corresponds to the wedge surface of the end of the tubular portion away from the tail plate, and the locking groove is a triangular tooth groove.

[0039] The assembly equipment of the small-size core-inserted optical fiber collimator as described above: a push groove is also provided on the surface of the connecting column, the push groove is connected to the inner cavity, a push button is fixed on the sliding member, the push button passes through the push groove and protrudes from the surface of the connecting column, and the push button is slidably matched with the push groove.

[0040] The assembly device of the small-size core-inserted optical fiber collimator as described above: a first screw is fixed through the center of the first side plate, the first screw is threadedly matched with a first propulsion screw, a first ball is rollingly embedded at one end of the first propulsion screw, and a first propulsion wheel is integrally provided at the other end;

[0041] A second screw is fixed through the center of the second side plate, and the second screw is threadedly matched with the second propulsion screw rod. A second ball is rollingly engaged at one end of the second propulsion screw rod, and a second propulsion wheel is integrally provided at the other end.

[0042] A method for assembling the small-size core-inserted optical fiber collimator of the present invention using the assembly device as described above comprises the following steps:

[0043] Step 1: pre-tighten, insert the ball lens and the ceramic ferrule into the two sets of locking components respectively, and then rotate the two locking wheels so that the two sets of locking components surround the ball lens and the ferrule component respectively;

[0044] Step 2: Positioning and assembling, respectively rotating the two propulsion wheels to drive the first propulsion screw and the second propulsion screw to rotate, and driving the ball lens and the plug assembly to approach the positioning plate through the first ball and the second ball until the propulsion wheels cannot be rotated;

[0045] Step three: final tightening and fixing, rotating the two locking wheels to drive the worm to rotate, the worm cooperates with a circle of worm teeth to drive the locking disk to rotate; the locking disk drives the vortex gear ring to rotate, the vortex gear ring interacts with the matching block, and under the constraints of the plug rod and the limiting hole, the matching block moves along the radial direction of the locking disk, and finally drives the rubber block to approach the central axis of the locking disk; with the help of multiple rubber blocks, the central axis of the locking disk is synchronously approached to completely lock and fix the ball lens and the core assembly;

[0046] Step 4: Encapsulation: Push the assembly feed piece to make the glass tube sleeve the pre-fixed ball lens and the ceramic ferrule; in the process of pushing the assembly feed piece, use the protrusion to first drive the limit piece to further retract into the accommodating piece, so that one end of the positioning plate extends out of the cylindrical positioning cavity and corresponds to the through groove; then the triangular tip at the end of the lifting piece contacts and squeezes the triangular piece, driving the triangular piece and the positioning plate to move in a direction away from the central axis of the cylindrical positioning cavity, so that the calibration surface is pulled out of the cylindrical positioning cavity; when the calibration surface is completely pulled out of the cylindrical positioning cavity, the glass tube spans the gap between the input end and the docking end to encapsulate and sleeve the ball lens and the ceramic ferrule;

[0047] Step 5: Disassembly: Rotate the two propulsion wheels in opposite directions to move the first ball away from the ball lens and the second ball away from the connecting column; then rotate the two locking wheels to separate the rubber blocks in one set of locking assemblies from the ball lens and the rubber blocks in the other set of locking assemblies from the plug assembly; pull the glass tube to remove the ball lens and the plug assembly pre-fixed on the glass tube from the cylindrical positioning cavity;

[0048] Step 6: Fix with glue. Pour glue from one end of the glass tube along the gap between the ceramic ferrule and the glass tube to completely fix the two. Then, pour glue from the other end of the glass tube along the gap between the ball lens and the glass tube to completely fix the two.

[0049] Step seven, remove the connecting column. After the glue is completely cured, push the push button to disengage the triangular teeth at the end of the locking piece from the triangular teeth on the lock groove, and then pull the ceramic ferrule and the connecting column axially to remove the connecting column from the connecting end of the ceramic ferrule.

[0050] Compared with the prior art, the beneficial effects of the present invention are: this small-size core-inserted optical fiber collimator can be directly connected to the LC connector on the jumper without the need for optical fiber fusion splicing, is smaller in size, simpler to manufacture, convenient and practical, and has excellent performance such as low insertion loss, high return loss, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 The figure is a structural diagram of an existing optical fiber collimator.

[0052] Figure 2 It is a half-section view of the small-size core-inserted optical fiber collimator in the present invention.

[0053] Figure 3 This is a light coupling collimation optical path diagram of the small-size core-inserted optical fiber collimator in the present invention.

[0054] Figure 4 It is a schematic diagram of the small-size ferrule-type optical fiber collimator in the present invention being directly connected to the LC connector via a ceramic ferrule.

[0055] Figure 5 It is a schematic diagram of the structure of the assembly equipment in the present invention.

[0056] Figure 6 for Figure 5 Schematic diagram of the structure from another perspective.

[0057] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0058] Figure 8 For Figure 5 Schematic diagram of the two trusses after being split based on the .

[0059] Fig. 9 For Figure 8 Schematic diagram of the longitudinal beam after splitting it based on the .

[0060] Fig.10 For Fig. 9 Schematic diagram of the bracket after being disassembled based on .

[0061] Fig.11 For Fig.10 Schematic diagram of the side panel after being split based on the .

[0062] Fig.12 For Fig.11 Schematic diagram of half section after removing the side panels on the basis.

[0063] Fig.13 for Fig.12 Enlarged view of point B in the middle.

[0064] Fig.14 for Fig.12 Schematic diagram from another perspective.

[0065] Fig.15 for Fig.14 Enlarged view of point C in the middle.

[0066] Fig.16 It is a schematic diagram after one group of accommodating parts and limiting parts are separated.

[0067] Fig.17 for Fig.16 Schematic diagram from another perspective.

[0068] Fig.18 This is a schematic diagram of the disassembled locking assembly.

[0069] Fig.19 for Fig.18 Schematic diagram from another perspective.

[0070] Fig. 20 For Fig.11 Schematic diagram of the other position after removing the side panel on the basis.

[0071] Fig.21 This is a schematic diagram of a half-section of the ceramic ferrule and the connecting column.

[0072] Fig. 22 for Fig.21 Schematic diagram of another position.

[0073] Fig.23 for Fig.21 Another schematic diagram of the orientation.

[0074] Fig.24 for Fig.23 Enlarged view of point D in the middle.

[0075] Fig.25 for Fig.21 Another schematic diagram of the orientation.

[0076] Fig.26 For Fig.21 Schematic diagram of the snap-fit ​​components after being disassembled based on the above.

[0077] Fig. 27 for Fig.26 Enlarged view of point E in the middle.

[0078] Fig.28 for Fig.26 Schematic diagram of another position.

[0079] Fig.29 for Fig.28 Enlarged view of point F in the middle.

[0080] In the figure: 101, ball lens; 102, glass tube; 103, optical fiber; 104, ceramic ferrule; 1041, lock slot; 105, LC connector;

[0081] 201, connecting column; 202, inner cavity; 203, sliding member; 204, push button; 205, push groove; 206, push rod; 207, inserting channel; 208, sliding cavity; 209, extrusion member; 210, extrusion groove; 211, movable cavity; 212, locking member; 213, guide column; 214, guide groove; 215, spring cavity; 216, spring; 217, truss; 218, side plate No. 1; 219, side plate No. 2; 220, bracket; 221, positioner; 222, positioning plate; 223, limiter; 2231, through groove; 224, sleeve; 225, triangle member; 226, accommodating member; 227, limiting ring; 2271, limiting hole; 228, locking disk; 2281, vortex gear ring; 2282, worm gear; 2283, raceway; 229, roller; 230, matching block; 2301, plug rod; 231, rubber block; 232, assembly feed member; 233, fixing member; 234, lifting member; 2341, raised portion; 235, first propulsion screw; 236, first solenoid; 237, first ball; 238, second solenoid; 239, second propulsion screw; 240, second ball; 241, longitudinal beam; 242, worm; 243, locking wheel; 244, mounting member. DETAILED DESCRIPTION

[0082] 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 the embodiments.

[0083] See also Figure 2 to Figure 4 As an embodiment of the present invention, the small-size ferrule-type optical fiber collimator includes a ball lens 101, a ceramic ferrule 104, and a glass tube 102; this collimator can be directly connected to the jumper without the need for optical fiber fusion splicing, has a smaller size, is simpler to manufacture, and is convenient and practical.

[0084] Specifically, the ball lens 101 includes an input end with an end face having an angle of 8°, the ceramic ferrule 104 includes a butt end with an end face also having an angle of 8°, and the other end of the ceramic ferrule 104 is a connecting end, which extends out of the glass tube 102;

[0085] The input end of the ball lens 101 extends from one end of the glass tube 102 into the glass tube 102 and is fixed to the glass tube 102 , the butt end of the ceramic ferrule 104 extends from the other end of the glass tube 102 into the glass tube 102 and is fixed to the glass tube 102 , and the input end and the butt end are parallel to each other.

[0086] The main function of the ball lens 101 is to collimate the small mode field light beam output by the optical fiber into a large mode field light beam, thereby increasing the transmission distance.

[0087] The butt-jointed end of the ceramic ferrule 104 is used for butting with the ball lens 101 , and the end of the ceramic ferrule 104 outside the glass tube 102 is used for connecting with a connector.

[0088] The glass tube 102 is made of high borosilicate glass material and is used to fix and package the ball lens 101 and the ceramic ferrule 104 at both ends thereof.

[0089] An optical fiber 103 is also fixed in the center of the ceramic ferrule 104 , and the optical fiber 103 is used for light transmission.

[0090] There is a gap between the input end of the ball lens 101 and the butt end of the ceramic ferrule 104 for optical coupling and collimation. Figure 3 shown.

[0091] The ball lens 101 and the glass tube 102 are bonded and fixed by glue. Similarly, the ceramic ferrule 104 and the glass tube 102 are also bonded and fixed by glue.

[0092] See also Figure 4 The ceramic ferrule 104 extends out of the connecting end of the glass tube 102 and is plugged into and matched with the LC connector 105 .

[0093] The core-type collimator is small in size, easy to process, convenient and practical, and can be directly connected to the LC connector 105. Figure 4 As shown, it has excellent performances such as low insertion loss, high return loss and high reliability.

[0094] In addition, the present invention also provides an assembly device for the small-size core-inserted optical fiber collimator as described above, see Figure 5 to Figure 29 ;

[0095] The connecting end of the ceramic ferrule 104 is fixedly matched with the connecting column 201, and the ceramic ferrule 104 and the connecting column 201 are fixedly matched to form a coaxial and same-diameter ferrule assembly;

[0096] See also Fig.12 and Fig.13 The assembly device includes a frame structure, in which a positioner 221 is fixedly arranged, and a cylindrical positioning cavity for accommodating the ball lens 101, the ceramic ferrule 104, and the glass tube 102 is provided through the center of the positioner 221; positioning plates 222 are respectively provided on the upper and lower sides of the positioner 221 to slide along the radial direction of the cylindrical positioning cavity;

[0097] Obviously, positioning holes that are slidably matched with the positioning plate 222 are formed on both the upper and lower sides of the positioner 221 .

[0098] The upper and lower sides of the frame structure are both provided with limiting components for preventing one end of the positioning plate 222 from being separated from the cylindrical positioning cavity;

[0099] One end of the positioning plate 222 extending into the positioner 221 is a calibration surface with an angle of 8°. After the input end of the ball lens 101 extends into the cylindrical positioning cavity from one end of the cylindrical positioning cavity, it is closely attached to the calibration surface of one positioning plate 222 extending into the cylindrical positioning cavity; after the butt end of the ceramic ferrule 104 extends into the cylindrical positioning cavity from the other end of the cylindrical positioning cavity, it is closely attached to the calibration surface of another positioning plate 222 extending into the cylindrical positioning cavity, so that the input end and the butt end are parallel and facing each other, and the distance between the two is consistent with the predetermined gap;

[0100] Two sets of locking components are also provided on the frame structure, and the locking components are used to fix the ceramic ferrule 104 and the ball lens 101 when the butt end and the input end are parallel and face each other and reach a predetermined gap;

[0101] An assembly feed piece 232 is slidably provided on the ferrule assembly, and the limiting assembly cooperates with the assembly feed piece 232. The assembly feed piece 232 is used to push the glass tube 102 slidably sleeved on the ferrule assembly further into the cylindrical positioning cavity to encapsulate the fixed ceramic ferrule 104 and the ball lens 101;

[0102] When pushing the glass tube 102 , the assembly feeding member 232 first drives the limiting component to move, releases the blocking of the positioning plate 222 by the limiting component, and then drives the calibration surface of the positioning plate 222 to be withdrawn from the cylindrical positioning cavity.

[0103] When the assembly equipment is in use;

[0104] First, two sets of locking components are used to surround the ball lens 101 and the ferrule component respectively. It should be noted that the locking components only surround the ball lens 101 and the ferrule component, but do not completely fix the two. The purpose of surrounding the two is to keep the ball lens 101 and the ceramic ferrule 104 coaxial with the cylindrical positioning cavity. At this time, the ball lens 101 and the ceramic ferrule 104 can still slide and retract along their own axes under the surrounding of the locking components by a large external force.

[0105] Push the input end of the ball lens 101 from one end of the cylindrical positioning cavity into the cylindrical positioning cavity until it cannot be pushed anymore; at this time, the 8° bevel of the input end will completely fit with the calibration surface of one of the positioning plates 222; since the input end has an 8° bevel, and the calibration surface of the positioning plate 222 is also an 8° bevel, when the ball lens 101 cannot be pushed, it must be when the input end is completely fitted with the calibration surface; after such a setting, the input end can be automatically calibrated.

[0106] Similarly, the butt end of the ceramic ferrule 104 is pushed from the other end of the cylindrical positioning cavity into the cylindrical positioning cavity until it cannot be pushed any further, and the butt end will fit with the calibration surface of the other positioning plate 222 .

[0107] Because the calibration surfaces of the two positioning plates 222 are parallel to each other, the input end and the docking end after final positioning must be parallel to each other.

[0108] In addition, when the input end just contacts the calibration surface, due to the effect of the thrust, the corresponding positioning plate 222 will be driven to slide along the radial direction of the cylindrical positioning cavity, so that the calibration surface is away from the central axis of the cylindrical positioning cavity; however, after the end of the positioning plate 222 contacts the limiting component, it cannot slide along the radial direction of the cylindrical positioning cavity. Thereafter, if the ball lens 101 continues to be pushed, the ball lens 101 will automatically rotate around its central axis to continuously calibrate the input end during the advancement process, and finally make the input end and the calibration surface completely fit together; after the input end and the calibration surface are completely fit together, the ball lens 101 cannot be pushed any more.

[0109] Similarly, when the docking end contacts the calibration surface, the thrust will drive the corresponding positioning plate 222 to slide radially along the cylindrical positioning cavity, so that the calibration surface moves away from the central axis of the cylindrical positioning cavity; however, after the end of the positioning plate 222 contacts the limiting component, it cannot slide radially along the cylindrical positioning cavity. Thereafter, if the ceramic ferrule 104 continues to be pushed, the ceramic ferrule 104 will automatically rotate around its central axis to continuously calibrate the input end during the advancement process, and finally make the input end and the calibration surface completely fit together; after the input end and the calibration surface are completely fit together, the ceramic ferrule 104 cannot be pushed any more.

[0110] At this time, one end of the two positioning plates 222 extending out of the cylindrical positioning cavity abuts against the two limiting components respectively and is blocked; and the distance between the two calibration surfaces matches the predetermined gap.

[0111] It should be emphasized that when the input end is completely in contact with the calibration surface of one of the positioning plates 222, the input end is not in contact with the other positioning plate 222; correspondingly, when the docking end is completely in contact with the calibration surface of one of the positioning plates 222, the docking end is not in contact with the other positioning plate 222; Fig.15The purpose of such a setting is to ensure that the input end only cooperates with the calibration surface on one of the positioning plates 222 and does not interfere with the other positioning plate 222; similarly, the docking end only cooperates with the calibration surface on the other positioning plate 222.

[0112] Then, two sets of locking components are used to fix the ball lens 101 and the ferrule component respectively, so as to keep the input end and the docking end parallel and ensure that the gap between the two does not change;

[0113] Finally, the assembly feed member 232 is pushed to make the glass tube 102 slide along the ferrule assembly and slide between the ball lens 101 and the ceramic ferrule 104; wherein, in the process of pushing the assembly feed member 232, the assembly feed member 232 will first drive the limiting assembly to move, so as to release the limiting assembly from blocking the end of the positioning plate 222 extending out of the cylindrical positioning cavity; then the assembly feed member 232 drives the positioning plate 222 to slide along the radial direction of the cylindrical positioning cavity, so that the calibration surface is completely withdrawn from the cylindrical positioning cavity; when the calibration surface is completely withdrawn from the cylindrical positioning cavity, the glass tube 102 spans the gap between the input end and the docking end to encapsulate and fit the ball lens 101 and the ceramic ferrule 104.

[0114] The ceramic ferrule 104 and the ball lens 101 encapsulated by the glass tube 102 are removed from the assembly equipment, and glue is poured from one end of the glass tube 102 along the gap between the ceramic ferrule 104 and the glass tube 102 to completely fix the two; and glue is poured from the other end of the glass tube 102 along the gap between the ball lens 101 and the glass tube 102 to completely fix the two;

[0115] Finally, the connecting column 201 can be disassembled.

[0116] As a further solution of the present invention, the frame structure includes two mutually parallel trusses 217, one end of the two trusses 217 is fixed by a first side plate 218, and the other end of the two trusses 217 is fixed by a second side plate 219;

[0117] A bracket 220 is fixed on one of the trusses 217 , and the positioner 221 is fixed on the bracket 220 ;

[0118] See also Fig.13 , a casing 224 is fixed to both the upper and lower sides of the positioner 221, and the positioning plate 222 and the casing 224 are slidably matched;

[0119] See also Fig.16 , Fig.17 ,as well as Fig. 20The limiting assembly includes a receiving member 226 and a limiting member 223. The receiving member 226 is horizontally arranged and fixed to the first side plate 218 and the truss 217. The limiting member 223 and the receiving member 226 are slidably matched.

[0120] A through slot 2231 is defined in the center of the limiting member 223 .

[0121] The provided sleeve 224 can prevent the calibration surface on the positioning plate 222 from bending and deforming when subjected to horizontal thrust; in the initial state, the through groove 2231 is misaligned with the end of the positioning plate 222 extending out of the cylindrical positioning cavity, so the end of the positioning plate 222 extending out of the cylindrical positioning cavity can only slide to the point where it fits with the limiting member 223 and is blocked; and when the assembling feed member 232 pushes the glass tube 102 to slide along the insert assembly, the assembling feed member 232 will drive the limiting member 223 to slide along the accommodating member 226, so that the end of the positioning plate 222 extending out of the cylindrical positioning cavity corresponds to the through groove 2231, thereby releasing the restriction of the positioning plate 222.

[0122] As a further solution of the present invention, please refer to Fig.12 , Fig.14 ,as well as Fig. 20 A fixing member 233 is fixedly provided on the assembly feeding member 232, and a lifting member 234 is fixed on the fixing member 233;

[0123] See also Fig.16 , Fig.17 ,as well as Fig. 20 The end of the positioning plate 222 extending out of the cylindrical positioning cavity is fixed with a triangular member 225 toward the side of the assembly feed member 232, and the end of the lifting member 234 toward the accommodating member 226 has a triangular tip;

[0124] A protrusion 2341 is integrally formed at one end of the lifting member 234 adjacent to the fixing member 233 .

[0125] In the process of pushing the assembly feed member 232, the lifting member 234 is first driven to approach the accommodating member 226 through the fixing member 233; the protrusion 2341 is used to cooperate with the end of the limiting member 223 to drive the limiting member 223 to retract into the accommodating member 226 and move, so that one end of the positioning plate 222 extends out of the cylindrical positioning cavity and corresponds to the through groove 2231, thereby releasing the restriction on the positioning plate 222.

[0126] Then the tip of the triangle contacts and squeezes the triangle 225, and under the action of the triangle slope, the triangle 225 and the positioning plate 222 are driven to move in a direction away from the central axis of the cylindrical positioning cavity, so that the calibration surface is pulled out of the cylindrical positioning cavity.

[0127] As a further solution of the present invention, please refer to Fig.12 , Fig.14 , Fig.18 , Fig.19 ,as well as Fig. 20 The locking assembly includes a limiting ring 227, a locking disk 228 rotatably matched with the limiting ring 227, and a matching block 230 connected to the locking disk 228;

[0128] A plurality of rollers 229 are rollingly engaged with the inner wall of the limiting ring 227 at equal intervals along the circumference, and a circle of rolling tracks 2283 is provided on the locking disk 228, and the rollers 229 are rollingly engaged with the rolling tracks 2283;

[0129] A volute gear ring 2281 is integrally provided on one surface of the locking disk 228, and the matching block 230 is meshed with the volute gear ring 2281; and an insertion rod 2301 is fixed on the outer side of the matching block 230, and the insertion rod 2301 is arranged along the radial direction of the locking disk 228;

[0130] The limiting ring 227 is provided with a limiting hole 2271, and the insert rod 2301 is slidably matched with the limiting hole 2271; a rubber block 231 is fixedly embedded in the inner side of the matching block 230;

[0131] The limiting ring 227 in one set of locking assemblies is fixed to the positioner 221 , and the limiting ring 227 in the other set of locking assemblies is fixed to the mounting member 244 , and the mounting member 244 is fixed to one of the trusses 217 .

[0132] The locking disk 228 is rotated to drive the vortex gear ring 2281 to rotate, and the vortex gear ring 2281 interacts with the matching block 230. At the same time, under the constraint of the insertion rod 2301 and the limiting hole 2271, the matching block 230 moves along the radial direction of the locking disk 228, and finally drives the rubber block 231 to approach or move away from the central axis of the locking disk 228; with the help of multiple rubber blocks 231, they synchronously approach the central axis of the locking disk 228 to surround and lock the ball lens 101.

[0133] As a further solution of the present invention, a longitudinal beam 241 is fixed between the two trusses 217, a circle of worm teeth 2282 is formed on the outer periphery of the locking plate 228, a worm 242 is rotatably arranged on the longitudinal beam 241, the worm 242 is engaged with a circle of worm teeth 2282, and a locking wheel 243 is fixed to one end of the worm 242.

[0134] The locking wheel 243 is rotated to drive the worm 242 to rotate, and the worm 242 cooperates with a circle of worm teeth 2282 to drive the locking plate 228 to rotate.

[0135] Since the locking disk 228 and the worm 242 are connected via a worm gear pair, there is a one-way transmission function between the two, that is, the locking disk 228 can only be driven to rotate by the worm 242, while the locking disk 228 cannot drive the worm 242 to rotate.

[0136] After such arrangement, the locking wheel 243 can be rotated to bring the plurality of rubber blocks 231 together to surround or fix the ball lens 101, and the surrounding and locking can be maintained without loosening.

[0137] As a further solution of the present invention, the ceramic ferrule 104 and the connecting column 201 are fixedly matched by a snap-fit ​​assembly to form a ferrule assembly;

[0138] See also Figure 21 to Figure 29 The connecting column 201 has an inner cavity 202, and the engaging assembly includes a sliding member 203 slidably disposed in the inner cavity 202, an extruding member 209 connected to the sliding member 203, and a locking member 212;

[0139] The connection end of the ceramic ferrule 104 is provided with a plurality of locking grooves 1041 along the circumference, and the locking grooves 1041 are adapted to the locking member 212;

[0140] In detail, the extrusion piece 209 includes a tubular portion and a tail plate, and a sliding cavity 208 is also provided in the connecting column 201, and the tail plate is slidably arranged in the sliding cavity 208; an active cavity 211 is also provided inside the end of the connecting column 201 that is connected to the ceramic ferrule 104, and the sliding cavity 208 is connected to the active cavity 211 through an extrusion groove 210;

[0141] The tubular portion is slidably disposed in the extrusion groove 210, one end of the tubular portion away from the tail plate is a wedge surface, and the locking member 212 is movably disposed in the movable cavity 211;

[0142] The connecting column 201 is also provided with a guide groove 214 and an elastic cavity 215, both of which are in communication with the movable cavity 211; a guide column 213 is fixed to the locking member 212, the guide column 213 is slidably matched with the guide groove 214, a spring 216 is provided in the elastic cavity 215, the spring 216 is kept compressed, and one end of the spring 216 is in contact with the locking member 212;

[0143] A plurality of insertion channels 207 are provided in the connecting column 201, and a push rod 206 is slidably provided in the insertion channel 207, one end of the push rod 206 is fixed to the sliding member 203, and the other end is fixed to the tail plate;

[0144] One end of the locking member 212 extending out of the active cavity 211 has triangular teeth, and the other end of the locking member 212 has an anti-wedge surface, which corresponds to the wedge surface of the end of the tubular portion away from the tail plate, and the locking groove 1041 is a triangular tooth groove.

[0145] When the connecting end of the connecting column 201 and the ceramic ferrule 104 needs to be fixed, they can be automatically fixed by simply aligning the two coaxially and squeezing them hard. In the process of squeezing and docking, the inclined surface of the triangular teeth is squeezed to generate a component force along the radial direction of the connecting column 201, and this component force drives the locking piece 212 to approach the central axis of the connecting column 201 along the radial direction of the connecting column 201, and further compresses the spring 216; then the locking piece 212 enters the locking groove 1041; as the connecting column 201 and the ceramic ferrule 104 are further squeezed, the end of the locking piece 212 is The triangular teeth will completely enter the triangular tooth grooves. When the triangular teeth completely enter the triangular tooth grooves, the locking member 212 will be reset radially along the connecting column 201 by the elastic force of the spring 216, and away from the central axis of the connecting column 201; the straight surface of the triangular teeth fits with the straight surface of the triangular tooth grooves, so the connecting column 201 and the ceramic ferrule 104 cannot be separated along the axial direction of the ferrule assembly; at the same time, the connecting end of the ceramic ferrule 104 fits completely with one of the end faces of the connecting column 201, so the connecting column 201 and the ceramic ferrule 104 cannot be brought close to each other along the axial direction of the ferrule assembly.

[0146] In addition, due to the action of the locking member 212 and the locking groove 1041, the ceramic ferrule 104 and the connecting post 201 cannot rotate, and ultimately the ceramic ferrule 104 and the connecting post 201 cannot rotate or move relative to each other, and the two form an integral ferrule assembly.

[0147] The surface of the connecting column 201 is also provided with a push groove 205, and the push groove 205 is connected to the inner cavity 202. A push button 204 is fixed on the sliding member 203, and the push button 204 passes through the push groove 205 and protrudes from the surface of the connecting column 201, and the push button 204 and the push groove 205 are slidably matched.

[0148] When the connecting column 201 and the ceramic ferrule 104 need to be disassembled, it is only necessary to push the push button 204, which drives the sliding member 203 to slide in the inner cavity 202 toward the ceramic ferrule 104; the sliding member 203 drives the tail plate to slide in the sliding cavity 208 by means of the push rod 206, so that the tubular portion slides toward the ceramic ferrule 104; the wedge surface of the end of the tubular portion acts on the reverse wedge surface of the end of the locking member 212, so that the locking member 212 is driven along the radial direction of the connecting column 201 and approaches the central axis of the connecting column 201, and finally the triangular teeth and triangular tooth grooves are separated.

[0149] As a further solution of the present invention, a first screw tube 236 is fixedly passed through the center of the first side plate 218, and the first screw tube 236 is threadedly matched with the first propulsion screw rod 235. A first ball 237 is rollingly engaged at one end of the first propulsion screw rod 235, and a first propulsion wheel is integrally provided at the other end;

[0150] A second screw tube 238 is fixedly passed through the center of the second side plate 219, and the second screw tube 238 is threadedly matched with a second propulsion screw rod 239. A second ball 240 is rollingly engaged with one end of the second propulsion screw rod 239, and a second propulsion wheel is integrally provided at the other end.

[0151] The first propulsion wheel is rotated to drive the first propulsion screw 235 to rotate, and the first propulsion screw 235 rotates while approaching the end of the ball lens 101 until the first ball 237 contacts the end of the ball lens 101; then the first propulsion wheel is continuously rotated to drive the first ball 237 to squeeze the ball lens 101, so that the ball lens 101 is close to the ceramic ferrule 104; when the input end of the ball lens 101 is in contact with the calibration surface on the positioning plate 222, the first propulsion wheel cannot be rotated any more (because the end of the positioning plate 222 extending out of the cylindrical positioning cavity has been blocked by the contact of the stopper 223);

[0152] Similarly, the second propulsion wheel is rotated to drive the connecting column 201 to move, so that the butt end of the ceramic ferrule 104 extends from the other end of the cylindrical positioning cavity into the cylindrical positioning cavity and is closely attached to the calibration surface of another positioning plate 222 extending into the cylindrical positioning cavity.

[0153] The ceramic ferrule 104 and the ball lens 101 are pushed to fit tightly against the calibration surfaces of the two positioning plates 222 by a threaded drive, and have a self-locking function; they can stay in place after the input end and the docking end are respectively in close contact with the calibration surfaces of the two positioning plates 222 .

[0154] Finally, the present invention also proposes a method for assembling the small-size core-inserted optical fiber collimator of the present invention using the assembly device as described above, comprising the following steps:

[0155] Step 1: pre-tighten, insert the ball lens 101 and the ceramic ferrule 104 into the two sets of locking components respectively, and then rotate the two locking wheels 243 to make the two sets of locking components surround the ball lens 101 and the ferrule component respectively; it should be noted that the locking components only surround the ball lens 101 and the ferrule component, that is, the locking force of the rubber block 231 on the surface of the ball lens 101 and the ferrule component is not large, and the ball lens 101 and the ferrule component are not completely fixed; at this time, the ball lens 101 and the ferrule component can still slide along the axis under the action of a large thrust;

[0156] Step 2: Positioning and assembling, respectively rotating the two propulsion wheels to drive the first propulsion screw 235 and the second propulsion screw 239 to rotate, and driving the ball lens 101 and the ferrule assembly to approach the positioning plate 222 through the first ball 237 and the second ball 240 until the propulsion wheels cannot be rotated;

[0157] Step 3: Final tightening and fixing, rotating the two locking wheels 243 to drive the worm 242 to rotate, the worm 242 cooperates with a circle of worm gears 2282 to drive the locking plate 228 to rotate; the locking plate 228 drives the vortex gear ring 2281 to rotate, the vortex gear ring 2281 interacts with the matching block 230, and under the constraints of the insertion rod 2301 and the limiting hole 2271, the matching block 230 moves along the radial direction of the locking plate 228, and finally drives the rubber block 231 to approach the central axis of the locking plate 228; with the help of multiple rubber blocks 231, they are synchronously approached to the central axis of the locking plate 228, so as to completely lock and fix the ball lens 101 and the core assembly;

[0158] Step 4: packaging, push the assembly feed member 232 to make the glass tube 102 sleeve the pre-fixed ball lens 101 and the ceramic insert 104; in the process of pushing the assembly feed member 232, the protrusion 2341 is used to first drive the limit member 223 to further retract into the accommodating member 226, so that the end of the positioning plate 222 extending out of the cylindrical positioning cavity corresponds to the through groove 2231; then the triangular tip at the end of the lifting member 234 contacts and squeezes the triangular member 225, driving the triangular member 225 and the positioning plate 222 to move in a direction away from the central axis of the cylindrical positioning cavity, so that the calibration surface is pulled out of the cylindrical positioning cavity; when the calibration surface is completely pulled out of the cylindrical positioning cavity, the glass tube 102 spans the gap between the input end and the docking end to package and sleeve the ball lens 101 and the ceramic insert 104;

[0159] Step 5: Disassembly: Rotate the two propulsion wheels in opposite directions to move the first ball 237 away from the ball lens 101 and the second ball 240 away from the connecting column 201; then rotate the two locking wheels 243 to disengage the rubber block 231 in one group of locking assemblies from the ball lens 101 and the rubber block 231 in the other group of locking assemblies from the plug assembly; pull the glass tube 102 to remove the ball lens 101 and the plug assembly pre-fixed on the glass tube 102 from the cylindrical positioning cavity;

[0160] Step 6: Fix with glue. Pour glue from one end of the glass tube 102 along the gap between the ceramic ferrule 104 and the glass tube 102 to completely fix the two. Then, pour glue from the other end of the glass tube 102 along the gap between the ball lens 101 and the glass tube 102 to completely fix the two.

[0161] Of course, glue can also be poured from one end of the glass tube 102 along the gap between the ball lens 101 and the glass tube 102; and then glue can be poured from the other end of the glass tube 102 along the gap between the ceramic ferrule 104 and the glass tube 102 to completely fix the two.

[0162] Step 7, remove the connecting column 201. After the glue is completely cured, push the push button 204 to disengage the triangular teeth at the end of the locking member 212 from the triangular teeth on the locking groove 1041. Then, pull the ceramic ferrule 104 and the connecting column 201 axially to remove the connecting column 201 from the connecting end of the ceramic ferrule 104.

[0163] The above embodiments are exemplary rather than restrictive, so the technical solutions of the present invention that can be implemented in other specific forms without departing from the spirit or basic features of the present invention are all included in the present invention.

Claims

1. An assembly device for a small-size ferrule-type optical fiber collimator, the small-size ferrule-type optical fiber collimator comprising a ball lens (101), a ceramic ferrule (104), and a glass tube (102), the ball lens (101) comprising an input end with an oblique angle at the end face, the ceramic ferrule (104) comprising a butt end with an oblique angle at the end face, the other end of the ceramic ferrule (104) being a connection end, the connection end extending out of the glass tube (102); The input end of the ball lens (101) extends from one end of the glass tube (102) into the glass tube (102) and is fixed to the glass tube (102), the butt end of the ceramic ferrule (104) extends from the other end of the glass tube (102) into the glass tube (102) and is fixed to the glass tube (102), and the input end and the butt end are parallel to each other; An optical fiber (103) for light transmission is also fixed in the center of the ceramic ferrule (104), and a gap is provided between the input end of the ball lens (101) and the butt end of the ceramic ferrule (104); The connection end of the ceramic ferrule (104) is fixedly matched with the connection column (201), and the ceramic ferrule (104) and the connection column (201) are fixedly matched to form a ferrule assembly with a coaxial axis and the same diameter; The assembly equipment comprises a frame structure, a positioner (221) is fixedly arranged in the frame structure, and a cylindrical positioning cavity for accommodating the ball lens (101), the ceramic ferrule (104), and the glass tube (102) is provided through the center of the positioner (221); Features: Positioning plates (222) are respectively provided on both sides of the positioner (221) so as to slide along the radial direction of the cylindrical positioning cavity; Both sides of the frame structure are provided with limiting components for preventing one end of the positioning plate (222) from detaching from the cylindrical positioning cavity; One end of the positioning plate (222) extending into the positioner (221) is a calibration surface; after the input end of the ball lens (101) extends from one end of the cylindrical positioning cavity into the cylindrical positioning cavity, it is closely attached to the calibration surface of one of the positioning plates (222) extending into the cylindrical positioning cavity; after the butt end of the ceramic ferrule (104) extends from the other end of the cylindrical positioning cavity into the cylindrical positioning cavity, it is closely attached to the calibration surface of the other positioning plate (222) extending into the cylindrical positioning cavity, so that the input end and the butt end are parallel and facing each other, and the distance between the two is consistent with the predetermined gap; Two sets of locking components are also arranged on the frame structure, and the locking components are used to fix the ceramic ferrule (104) and the ball lens (101) when the butt end and the input end are parallel and face each other and a predetermined gap is reached; An assembly feed piece (232) is slidably disposed on the ferrule assembly, the limiting assembly cooperates with the assembly feed piece (232), and the assembly feed piece (232) is used to push the glass tube (102) slidably sleeved on the ferrule assembly further into the cylindrical positioning cavity, so as to encapsulate the fixed ceramic ferrule (104) and the ball lens (101); In the process of pushing the glass tube (102), the assembly feeding member (232) first drives the limiting component to move, releases the blocking of the positioning plate (222) by the limiting component, and then drives the calibration surface of the positioning plate (222) to be withdrawn from the cylindrical positioning cavity.

2. The assembly device of a small-size core-inserted optical fiber collimator according to claim 1, characterized in that: The frame structure comprises two mutually parallel trusses (217), one end of the two trusses (217) being fixed by a first side plate (218), and the other end of the two trusses (217) being fixed by a second side plate (219); A bracket (220) is fixed on one of the trusses (217), and the positioner (221) is fixed on the bracket (220); A sleeve (224) is fixed on both sides of the positioner (221), and the positioning plate (222) and the sleeve (224) are slidably matched; The limiting assembly comprises a receiving member (226) and a limiting member (223); the receiving member (226) is arranged horizontally and fixed to the first side plate (218) and the truss (217); the limiting member (223) and the receiving member (226) are slidably matched; A through slot (2231) is provided in the center of the limiting member (223).

3. The assembly device of a small-size core-inserted optical fiber collimator according to claim 2, characterized in that: A fixing member (233) is fixedly provided on the assembly feeding member (232), and a lifting member (234) is fixed on the fixing member (233); A triangular piece (225) is fixed to one side of the positioning plate (222) extending out of the cylindrical positioning cavity and facing the assembly feed piece (232), and the lifting piece (234) has a triangular tip at one end facing the accommodating piece (226); A protrusion (2341) is integrally formed on one end of the lifting member (234) adjacent to the fixing member (233).

4. The assembly device of a small-size core-inserted optical fiber collimator according to claim 3, characterized in that: The locking assembly comprises a restriction ring (227), a locking disk (228) rotatably engaged with the restriction ring (227), and a mating block (230) connected to the locking disk (228); A plurality of rollers (229) are rollingly engaged with the inner wall of the limiting ring (227) at equal intervals along the circumference, a circle of rolling tracks (2283) is provided on the locking disk (228), and the rollers (229) are rollingly engaged with the rolling tracks (2283); A volute gear ring (2281) is integrally provided on one surface of the locking disk (228), and the matching block (230) is meshed with the volute gear ring (2281); and an insertion rod (2301) is fixed on the outside of the matching block (230), and the insertion rod (2301) is arranged along the radial direction of the locking disk (228); The limiting ring (227) is provided with a limiting hole (2271), and the insert rod (2301) is slidably engaged with the limiting hole (2271); a rubber block (231) is fixedly engaged with the inner side of the matching block (230); The limiting ring (227) in one set of locking assemblies is fixed to the positioner (221), and the limiting ring (227) in the other set of locking assemblies is fixed to the mounting member (244), and the mounting member (244) is fixed to one of the trusses (217).

5. The assembly device of a small-size core-inserted optical fiber collimator according to claim 4, characterized in that: A longitudinal beam (241) is also fixed between the two trusses (217); a circle of worm teeth (2282) is formed on the outer periphery of the locking plate (228); a worm (242) is rotatably arranged on the longitudinal beam (241); the worm (242) is engaged with a circle of worm teeth (2282); and a locking wheel (243) is fixed to one end of the worm (242).

6. The assembly device of a small-size ferrule-type optical fiber collimator according to claim 5 is characterized in that: The ceramic ferrule (104) and the connecting column (201) are fixedly matched via a snap-fit ​​assembly to form a ferrule assembly; An inner cavity (202) is provided inside the connecting column (201), and the engaging assembly comprises a sliding member (203) slidably disposed in the inner cavity (202), an extruding member (209) connected to the sliding member (203), and a locking member (212); A plurality of locking grooves (1041) are provided along the circumference of the connection end of the ceramic insert (104), and the locking grooves (1041) are adapted to the locking member (212); The extrusion piece (209) comprises a tubular portion and a tail plate, a sliding cavity (208) is further provided in the connection column (201), and the tail plate is slidably arranged in the sliding cavity (208); an active cavity (211) is further arranged inside the end of the connection column (201) that is butt-jointed with the ceramic insert (104), and the sliding cavity (208) is connected to the active cavity (211) via an extrusion groove (210); The tubular portion is slidably disposed in the extrusion groove (210), an end of the tubular portion away from the tail plate is a wedge surface, and the locking member (212) is movably disposed in the movable cavity (211); A guide groove (214) and an elastic cavity (215) are also provided in the connecting column (201), and the guide groove (214) and the elastic cavity (215) are both in conduction with the movable cavity (211); a guide column (213) is fixed on the locking member (212), and the guide column (213) is slidably matched with the guide groove (214); a spring (216) is provided in the elastic cavity (215), and the spring (216) is kept compressed, and one end of the spring (216) is in contact with the locking member (212); A plurality of insertion channels (207) are arranged in the connection column (201), a push rod (206) is slidably arranged in the insertion channel (207), one end of the push rod (206) is fixed to the sliding member (203), and the other end is fixed to the tail plate; One end of the locking piece (212) extending out of the active cavity (211) has triangular teeth, and the other end of the locking piece (212) has a reverse wedge surface, the reverse wedge surface corresponds to the wedge surface of the end of the tubular portion away from the tail plate, and the locking groove (1041) is a triangular tooth groove.

7. The assembly device of a small-size core-inserted optical fiber collimator according to claim 6 is characterized in that: The surface of the connecting column (201) is also provided with a push groove (205), the push groove (205) being connected to the inner cavity (202), and a push button (204) being fixed on the sliding member (203), the push button (204) passing through the push groove (205) and protruding from the surface of the connecting column (201), and the push button (204) and the push groove (205) are slidably matched.

8. The assembly device of a small-size ferrule-type optical fiber collimator according to claim 7 is characterized in that: A first screw tube (236) is fixedly passed through the center of the first side plate (218), the first screw tube (236) is threadedly matched with a first propulsion screw rod (235), a first ball (237) is rollingly engaged at one end of the first propulsion screw rod (235), and a first propulsion wheel is integrally provided at the other end; A second screw tube (238) is fixedly passed through the center of the second side plate (219), and the second screw tube (238) is threadedly matched with a second propulsion screw rod (239). A second ball (240) is rollingly engaged at one end of the second propulsion screw rod (239), and a second propulsion wheel is integrally provided at the other end.

9. A method for assembling a small-size ferrule-type optical fiber collimator using the assembly device as claimed in claim 8, characterized in that: The steps include: Step 1: pre-tighten, insert the ball lens (101) and the ceramic ferrule (104) into the two sets of locking components respectively, and then rotate the two locking wheels (243) so that the two sets of locking components surround the ball lens (101) and the ferrule component respectively; Step 2: Positioning and assembling, respectively rotating the two propulsion wheels to drive the first propulsion screw (235) and the second propulsion screw (239) to rotate, and driving the ball lens (101) and the plug assembly to approach the positioning plate (222) through the first ball (237) and the second ball (240) until the propulsion wheels cannot be rotated; Step three, final tightening and fixing, rotating the two locking wheels (243) to drive the worm (242) to rotate, the worm (242) cooperates with a circle of worm teeth (2282) to drive the locking disk (228) to rotate; the locking disk (228) drives the vortex gear ring (2281) to rotate, the vortex gear ring (2281) interacts with the matching block (230), and under the constraints of the insertion rod (2301) and the limiting hole (2271), the matching block (230) moves along the radial direction of the locking disk (228), and finally drives the rubber block (231) to approach the central axis of the locking disk (228); with the help of multiple rubber blocks (231) synchronously approaching the central axis of the locking disk (228), the ball lens (101) and the plug assembly are completely locked and fixed; Step 4: encapsulation, pushing the assembly feed member (232) so that the glass tube (102) is sleeved with the pre-fixed ball lens (101) and the ceramic insert (104); in the process of pushing the assembly feed member (232), the protrusion (2341) is used to first drive the limit member (223) to further retract into the accommodating member (226), so that one end of the positioning plate (222) extending out of the cylindrical positioning cavity corresponds to the through groove (2231); then the triangular tip at the end of the lifting member (234) contacts the triangular member (225) and squeezes the triangular member (225), driving the triangular member (225) and the positioning plate (222) to move in a direction away from the central axis of the cylindrical positioning cavity, so that the calibration surface is withdrawn from the cylindrical positioning cavity; when the calibration surface is completely withdrawn from the cylindrical positioning cavity, the glass tube (102) spans the gap between the input end and the butt end to encapsulate and sleeve the ball lens (101) and the ceramic insert (104); Step 5, disassembly, rotate the two propulsion wheels in opposite directions to move the first ball (237) away from the ball lens (101) and the second ball (240) away from the connecting column (201); then rotate the two locking wheels (243) to disengage the rubber block (231) in one group of locking assemblies from the ball lens (101) and the rubber block (231) in the other group of locking assemblies from the plug assembly; pull the glass tube (102) to remove the ball lens (101) and the plug assembly pre-fixed on the glass tube (102) from the cylindrical positioning cavity; Step 6: Fixing with glue: pouring glue from one end of the glass tube (102) along the gap between the ceramic ferrule (104) and the glass tube (102) to completely fix the two; then pouring glue from the other end of the glass tube (102) along the gap between the ball lens (101) and the glass tube (102) to completely fix the two; Step seven, removing the connecting column (201), after the glue is completely cured, pushing the push button (204) to disengage the triangular teeth at the end of the locking member (212) from the triangular tooth grooves on the locking groove (1041), and then pulling the ceramic ferrule (104) and the connecting column (201) axially to remove the connecting column (201) from the connecting end of the ceramic ferrule (104).

Images