Passive coupling device for optical products

Abstract

The application relates to the technical field of optical fiber coupling, and discloses a passive coupling device for optical products, which comprises a main base, a positioning table, a cover plate feeding mechanism, an optical fiber feeding mechanism and an optical camera assembly; the cover plate feeding mechanism and the optical fiber feeding mechanism are oppositely arranged on the two sides of the positioning table along the X direction; the cover plate feeding mechanism comprises a first fine adjustment sliding table, a first X direction translation structure and a cover plate suction structure, the first fine adjustment sliding table and the first X direction translation structure are connected between the main base and the cover plate suction structure; the cover plate suction structure comprises a fixed block, a movable block and a suction head, the movable block is floatingly connected with the fixed block and located at the lower side of the fixed block, the suction head is fixedly connected with the movable block, and a negative pressure air duct is arranged in the suction head; the optical fiber feeding mechanism comprises a second fine adjustment sliding table, a second X direction translation structure and an optical fiber clamp structure; the positioning table is provided with a product positioning groove, the optical camera assembly is arranged on the outer side of the positioning table at intervals, and the optical camera assembly is oppositely arranged with the product positioning groove.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber coupling, and in particular to a passive coupling device for optical products. Background Art

[0002] In the optical communications industry, an optical engine refers to a complete signal conversion component consisting of an integrated electronic chip and a silicon photonic chip connected to an optical fiber. During the manufacturing process, optical products (such as silicon photonic chips) must be coupled to optical fibers to achieve the transmission and reception of optical signals.

[0003] Existing fiber optic coupling equipment, such as the Chinese utility model patent with authorization announcement number CN214540149U and authorization announcement date of 2021.10.29, discloses a laser automatic coupling system based on a dish-shaped package, which specifically includes an industrial computer, and a fiber optic positioning mechanism, a side-view vision system, a front-view vision system, and an automatic coupling mechanism connected to the industrial computer. The automatic coupling mechanism is provided with a support plate for supporting and fixing the laser based on the dish-shaped package. The side-view vision system is located on the fiber optic inlet side of the laser based on the dish-shaped package, and the front-view vision system is located above the laser based on the dish-shaped package. The fiber optic positioning mechanism is used to clamp the optical fiber and drive the optical fiber to move. The automatic coupling mechanism is used to drive the laser based on the dish-shaped package to adjust its direction and position after the optical fiber is positioned, so as to adjust the optimal coupling position of the laser and the optical fiber.

[0004] Existing automatic laser coupling systems are only suitable for coupling optical fibers to lasers based on dished packages. However, when coupling optical products that require a press-fit cover, there's no guarantee that the cover can be removed, moved, and accurately attached to the coupling position on the optical product, making it difficult to achieve high-precision passive coupling between the optical fiber and the optical product. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that, for coupling situations where optical products require pressing a cover plate, it is impossible to ensure that the cover plate can be taken out, moved and accurately fitted to the coupling position of the optical product, making it difficult to achieve high-precision passive coupling between the optical fiber and the optical product.

[0006] In order to solve the above technical problems, the present invention provides a technical solution for a passive coupling device for optical products:

[0007] A passive coupling device for optical products includes a main base, a positioning platform, a cover plate loading mechanism, an optical fiber loading mechanism, and an optical camera assembly disposed on the main base; the main base has X, Y, and Z directions intersecting in pairs, and the cover plate loading mechanism and the optical fiber loading mechanism are arranged on opposite sides of the positioning platform along the X direction;

[0008] The cover plate feeding mechanism includes a first fine-tuning slide, a first X-direction translation structure and a cover plate suction structure, wherein the first fine-tuning slide and the first X-direction translation structure are connected between the main base and the cover plate suction structure;

[0009] The cover plate suction structure includes a fixed block, a movable block, and a suction head. The fixed block is mounted on the first fine-tuning slide or the first X-axis translation structure. The movable block is floatingly connected to the fixed block and is located below the fixed block. The suction head is fixedly connected to the movable block. A negative pressure air channel is provided inside the suction head for sucking the cover plate.

[0010] The optical fiber feeding mechanism includes a second fine-tuning slide, a second X-direction translation structure and an optical fiber clamp structure, wherein the second fine-tuning slide and the second X-direction translation structure are connected between the main base and the optical fiber clamp structure;

[0011] The positioning platform is provided with a product positioning groove, and the optical camera assembly is arranged at intervals on the outside of the positioning platform, and the optical camera assembly is arranged opposite to the product positioning groove for photographing the position where the optical fiber is coupled and the cover plate is attached.

[0012] Furthermore, a floating gap is provided between the fixed block and the movable block, a groove is provided at the lower part of the fixed block, the length direction of the groove extends along the X direction, a protrusion is provided at the upper part of the movable block, the cross-sectional profiles of the groove and the protrusion perpendicular to the X direction are both arc-shaped, and the protrusion and the groove are relatively rotated around the X axis.

[0013] Furthermore, the suction head includes a horizontal section and a vertical section that are fixedly connected, the horizontal section extends along the X direction and is fixedly connected to the movable block, the vertical section is arranged at the end of the horizontal section away from the movable block, and a cover plate snap-in is provided at the end of the vertical section, and the cover plate snap-in is connected to the negative pressure airway.

[0014] Furthermore, the main base is located on one side of the positioning platform along the X direction and is also provided with an X-direction coarse adjustment structure, the first fine adjustment slide is connected between the X-direction coarse adjustment structure and the first X-direction translation structure, and the cover plate suction structure is installed at the moving end of the first X-direction translation structure.

[0015] Furthermore, the X-axis coarse adjustment structure includes a base plate, a slide plate and an X-axis coarse adjustment screw. The base plate is fixedly connected to the main base, the slide plate is installed on the base plate for movement along the X-direction, the X-axis coarse adjustment screw is arranged on the base plate, and the slide plate is also provided with a protrusion for press-fitting with the X-axis coarse adjustment screw.

[0016] Furthermore, a bracket is installed at the moving end of the first X-direction translation structure, and the bracket is arranged at intervals on the upper side of the cover plate suction structure. A UV lamp is installed at the end of the bracket away from the first X-direction translation structure, and the UV lamp is arranged toward the suction head.

[0017] Furthermore, the second X-direction translation structure is arranged on the other side of the main base along the X-direction of the positioning table, the second fine-tuning slide is connected to the moving end of the second X-direction translation structure, and the optical fiber loading mechanism is installed on the second fine-tuning slide.

[0018] Furthermore, the optical fiber clamp structure includes a mounting plate, a first clamping platform and a second clamping platform, wherein the first clamping platform and the second clamping platform are respectively adjustable along the Y direction and mounted on the mounting plate;

[0019] A first pressing groove is formed on the first clamping platform, and a first pressing plate is hingedly installed on one side of the first clamping platform close to the positioning platform, and the first pressing plate is used to press and fit the optical fiber in the first pressing groove;

[0020] A second pressing groove is formed on the second clamping platform, and a second pressing plate is hingedly mounted on one side of the second clamping platform close to the positioning platform. The second pressing plate is used for pressing and fitting with the optical fiber in the second pressing groove.

[0021] Furthermore, the first fine-tuning slide and the second fine-tuning slide are respectively six-axis fine-tuning slides, which have a movement degree of freedom along the X direction, a movement degree of freedom along the Y direction, a movement degree of freedom along the Z direction, a rotation degree of freedom around the X axis, a rotation degree of freedom around the Y axis, and a rotation degree of freedom around the Z axis;

[0022] The six-axis fine-tuning slide is equipped with a movable adjustment knob and a rotary adjustment knob. The precision range of the movable adjustment knob is 1 μm / turn to 5 μm / turn, and the precision range of the rotary adjustment knob is 0.1° / turn to 5° / turn.

[0023] Furthermore, the first X-direction translation structure is a first X-direction reciprocating structure, which includes a first X-direction guide rail, a first X-direction slider, and a first X-direction driver. The first X-direction slider is guided and mounted on the first X-direction guide rail. The first X-direction driver is transmission-connected between the first X-direction guide rail and the first X-direction slider. The fixed block is connected to the first X-direction slider.

[0024] The second X-direction translation structure is a second X-direction reciprocating structure, which includes a second X-direction guide rail, a second X-direction slider and a second X-direction drive. The second X-direction slider is guided and installed on the second X-direction guide rail. The second X-direction drive is transmission-connected between the main base and the second X-direction slider. The second fine-tuning slide is connected to the second X-direction slider.

[0025] Compared with the prior art, the passive coupling device for optical products of the present invention has the following advantages: the passive coupling device for optical products adopts a design form of a main base, a positioning platform, a cover plate loading mechanism, a fiber loading mechanism, and an optical camera assembly. The main base has two intersecting X-, Y-, and Z-directions. The positioning platform is arranged on the main base. The cover plate loading mechanism and the fiber loading mechanism are arranged on both sides of the positioning platform relative to each other along the X-direction. The positioning platform is provided with a product positioning groove, in which the optical product can be accurately placed. The fiber is clamped by the fiber loading mechanism and moved along the X-direction to the positioning platform, so that the core of the fiber is coupled to the V-groove area of ​​the optical product. The cover plate loading mechanism sucks the cover plate and moves along the X-direction to the positioning platform, so that the cover plate is accurately pressed against the fiber coupling position, ensuring that the optical fiber can be compressed and limited.

[0026] Among them, the cover plate feeding mechanism includes a first fine-tuning slide, a first X-direction translation structure and a cover plate suction structure. The first X-direction translation structure mainly drives the cover plate suction structure to approach or move away from the positioning table along the X-direction. The first fine-tuning slide can accurately fine-tune the cover plate suction structure to ensure that the cover plate is pressed smoothly and accurately on the optical fiber coupling position. Moreover, the cover plate suction structure includes a fixed block, a movable block and a suction head. The movable block and the fixed block can be floatingly connected and are located on the lower side of the fixed block. The suction head is fixedly connected to the movable block, and the cover plate feeding can be sucked by using the negative pressure airway of the suction head. During the pressing process, the movable block can float relative to the fixed block, which ensures the adaptability and fault tolerance of the pressing operation, avoids excessive extrusion pressure between the cover plate and the optical product during pressing, and thus effectively protects the optical product and optical fiber.

[0027] In addition, the fiber loading mechanism includes a second fine-tuning slide, a second X-axis translation structure, and a fiber clamping structure. The second fine-tuning slide and the second X-axis translation structure are connected between the main base and the fiber clamping structure. The second X-axis translation structure primarily drives the fiber clamping structure toward or away from the positioning table along the X-axis. The second fine-tuning slide can precisely fine-tune the fiber clamping structure to ensure that the fiber is accurately coupled to the V-groove area. Optical camera assemblies are arranged at intervals outside the positioning table and relative to the product positioning groove. The optical camera assemblies can capture the position of fiber coupling and cover plate bonding, enabling magnified observation of the fiber coupling and cover plate bonding to achieve high-precision passive coupling between the optical fiber and the optical product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional schematic diagram of a passive coupling device for an optical product according to an embodiment of the present invention;

[0029] Figure 22 is a perspective schematic diagram of a cover plate loading mechanism (first perspective) in an embodiment of the present invention;

[0030] Figure 3 2 is a perspective schematic diagram of a cover plate loading mechanism (second viewing angle) in an embodiment of the present invention;

[0031] Figure 4 2 is a perspective schematic diagram of a cover plate suction structure according to an embodiment of the present invention;

[0032] Figure 5 yes Figure 4 A schematic cross-sectional view of the suction structure of the middle cover plate;

[0033] Figure 6 2 is a perspective schematic diagram of an optical fiber feeding mechanism (first perspective) in an embodiment of the present invention;

[0034] Figure 7 is a three-dimensional schematic diagram of the optical fiber feeding mechanism (second viewing angle) in an embodiment of the present invention;

[0035] In the figure: 1-main base, 2-positioning platform, 20-product positioning groove, 3-cover feeding mechanism, 31-first fine-tuning slide, 32-first X-direction translation structure, 321-first X-direction guide rail, 322-first X-direction slider, 323-first X-direction drive, 33-cover suction structure, 331-fixed block, 332-movable block, 333-suction head, 334-negative pressure airway, 335-floating gap, 336-groove, 337-protrusion, 338-cover bayonet, 339-cover fixture, 34-bracket, 35-U V lamp, 36-X-direction coarse adjustment structure, 361-base plate, 362-slide plate, 363-X-direction coarse adjustment screw, 4-optical fiber loading mechanism, 41-second fine-adjustment slide, 42-second X-direction translation structure, 421-second X-direction guide rail, 422-second X-direction slider, 423-second X-direction drive, 43-optical fiber clamp structure, 430-mounting plate, 431-first clamping platform, 432-second clamping platform, 433-first pressing groove, 434-first pressing plate, 435-second pressing groove, 436-second pressing plate, 5-optical camera assembly. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0039] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] like Figures 1 to 7 As shown, a passive coupling device for optical products according to an embodiment of the present invention includes a main base 1, and a positioning platform 2, a cover feeding mechanism 3, an optical fiber loading mechanism 4 and an optical camera assembly 5 arranged on the main base 1; the main base 1 has X-direction, Y-direction and Z-direction intersecting each other, and the cover feeding mechanism 3 and the optical fiber loading mechanism 4 are arranged on both sides of the positioning platform 2 relatively along the X-direction; the cover feeding mechanism 3 includes a first fine-tuning slide 31, a first X-direction translation structure 32 and a cover suction structure 33, and the first fine-tuning slide 31 and the first X-direction translation structure 32 are connected between the main base 1 and the cover suction structure 33.

[0041] The cover plate suction structure 33 includes a fixed block 331, a movable block 332 and a suction head 333. The fixed block 331 is installed on the first fine-tuning slide 31 or the first X-axis translation structure 32. The movable block 332 and the fixed block 331 can be floatingly connected and are located on the lower side of the fixed block 331. The suction head 333 is fixedly connected to the movable block 332. A negative pressure air duct 334 for adsorbing the cover plate is opened inside the suction head 333.

[0042] The optical fiber loading mechanism 4 includes a second fine-tuning slide 41, a second X-axis translation structure 42 and a fiber clamp structure 43. The second fine-tuning slide 41 and the second X-axis translation structure 42 are connected between the main base 1 and the fiber clamp structure 43. A product positioning groove 20 is provided on the positioning table 2, and the optical camera assembly 5 is arranged at intervals on the outside of the positioning table 2, and the optical camera assembly 5 is arranged opposite to the product positioning groove 20 for photographing the position of optical fiber coupling and cover plate fitting.

[0043] This passive coupling device for optical products utilizes a main base 1, a positioning platform 2, a cover plate loading mechanism 3, a fiber loading mechanism 4, and an optical camera assembly 5. The main base 1 has intersecting X, Y, and Z directions. The positioning platform 2 is mounted on the main base 1, and the cover plate loading mechanism 3 and the fiber loading mechanism 4 are arranged on opposite sides of the positioning platform 2 along the X direction. Positioning platform 2 is provided with a product positioning groove 20, into which the optical product can be accurately placed. The fiber loading mechanism 4 clamps the optical fiber and moves it along the X direction to the positioning platform 2, where the fiber core is coupled to the V-groove area of ​​the optical product. The cover plate loading mechanism 3 absorbs the cover plate and moves it along the X direction to the positioning platform 2, where it is accurately pressed against the fiber coupling position, ensuring that the optical fiber is tightly pressed and limited.

[0044] The cover plate loading mechanism 3 includes a first fine-tuning slide 31, a first X-axis translation structure 32, and a cover plate suction structure 33. The first X-axis translation structure 32 primarily drives the cover plate suction structure 33 toward or away from the positioning platform 2 in the X-axis. The first fine-tuning slide 31 precisely fine-tunes the cover plate suction structure 33 to ensure that the cover plate is smoothly and accurately pressed against the fiber coupling position. Furthermore, the cover plate suction structure 33 includes a fixed block 331, a movable block 332, and a suction head 333. The movable block 332 is floatingly connected to the fixed block 331 and is located below the fixed block 331. The suction head 333 is fixedly connected to the movable block 332 and utilizes a negative pressure airway 334 of the suction head 333 to suck the cover plate material. During the pressing process, the movable block 332 can float relative to the fixed block 331, ensuring the adaptability and fault tolerance of the pressing operation and preventing excessive squeezing between the cover plate and the optical product during pressing, thereby effectively protecting the optical product and optical fiber.

[0045] In addition, the fiber loading mechanism 4 includes a second fine-tuning slide 41, a second X-axis translation structure 42, and a fiber clamping structure 43. The second fine-tuning slide 41 and the second X-axis translation structure 42 are connected between the main base 1 and the fiber clamping structure 43. The second X-axis translation structure 42 primarily drives the fiber clamping structure 43 toward or away from the positioning table 2 in the X direction. The second fine-tuning slide 41 can precisely fine-tune the fiber clamping structure 43 to ensure that the fiber is accurately coupled to the V-groove area. Optical camera assemblies 5 are arranged at intervals outside the positioning table 2 and opposite the product positioning groove 20. The optical camera assembly 5 can capture the position of fiber coupling and cover plate bonding, allowing for magnified observation of the fiber coupling and cover plate bonding, thereby achieving high-precision passive coupling between the optical fiber and the optical product.

[0046] In this embodiment, a floating gap 335 is provided between the fixed block 331 and the movable block 332. A groove 336 is defined at the bottom of the fixed block 331, extending longitudinally along the X-axis. A protrusion 337 is provided at the top of the movable block 332. The cross-sectional profiles of the groove 336 and protrusion 337 perpendicular to the X-axis are both arc-shaped, and the protrusion 337 and groove 336 rotate relative to each other about the X-axis. The floating gap 335 is provided between the fixed block 331 and the movable block 332, and the cross-sectional profiles of the groove 336 and protrusion 337 relative to the YOZ plane are arc-shaped. Specifically, the fixed block 331 and the movable block 332 are rotatably assembled via the groove 336 and protrusion 337. During pressing, the cover plate can adapt slightly to the surface flatness of the fiber coupling position, ensuring that the cover plate accurately presses the fiber core into the V-groove.

[0047] Specifically, the suction head 333 includes a horizontal section and a vertical section that are fixedly connected. The horizontal section of the suction head 333 extends along the X direction and is fixedly connected to the movable block 332. The vertical section of the suction head 333 is arranged at the end of the horizontal section away from the movable block 332. The end of the vertical section is provided with a cover plate snap-in 338, which is connected to the negative pressure airway 334. When in use, a cover plate jig 339 is required for assistance. The cover plate jig 339 is provided with a receiving groove and a pin hole. The movable block 332 is provided with a pin (not shown in the figure). The cover plate jig 339 equipped with the cover plate is placed on the lower side of the movable block 332. The pin is plugged into the pin hole to make the cover plate accurately aligned with the cover plate snap-in 338 of the suction head 333, and then the cover plate is stably adsorbed into the cover plate snap-in 338 by negative pressure.

[0048] As a further preferred embodiment, the main base 1 is further provided with an X-axis coarse adjustment structure 36 on one side of the positioning platform 2 along the X-axis. The first fine adjustment slide 31 is connected between the X-axis coarse adjustment structure 36 and the first X-axis translation structure 32, and the cover plate suction structure 33 is mounted on the moving end of the first X-axis translation structure 32. Specifically, the X-axis coarse adjustment structure 36 includes a base plate 361, a slide plate 362, and an X-axis coarse adjustment screw 363. The base plate 361 is fixedly connected to the main base 1, and the slide plate 362 is mounted on the base plate 361 for movement in the X-axis. The X-axis coarse adjustment screw 363 is disposed on the base plate 361. The slide plate 362 is also provided with a protrusion for press-fitting with the X-axis coarse adjustment screw 363. The adjustment accuracy of the X-axis coarse adjustment screw 363 is 1 mm / turn.

[0049] An X-axis coarse adjustment structure 36 is provided on the main base 1, expanding the X-axis adjustment range of the cover loading mechanism 3. The X-axis coarse adjustment structure 36 can be operated first for coarse adjustment, and then the first fine adjustment slide 31 can be operated for fine adjustment, thereby improving the efficiency of the cover pressing and alignment. Furthermore, a bracket 34 is mounted on the movable end of the first X-axis translation structure 32. The brackets 34 are spaced apart above the cover suction structure 33. A UV lamp 35 is mounted on the end of the bracket 34 away from the first X-axis translation structure 32, and is positioned toward the suction head 333. During the glue curing operation after pressing the cover, the UV lamp 35 can be used to cure the glue at the fiber coupling position.

[0050] The first X-direction translation structure 32 is a first X-direction reciprocating structure, comprising a first X-direction guide rail 321, a first X-direction slider 322, and a first X-direction driver 323. The first X-direction slider 322 is guided and mounted on the first X-direction guide rail 321, the first X-direction driver 323 is transmission-connected between the first X-direction guide rail 321 and the first X-direction slider 322, and the fixing block 331 is connected to the first X-direction slider 322. The first X-direction translation structure 32 drives the cover plate suction structure 33 to rapidly move in the X-direction. When the cover plate is loaded onto the positioning table 2, the X-direction coarse adjustment structure 36 and the first fine adjustment slide 31 are combined to accurately adjust the pressing position of the cover plate. Once pressing is completed, the cover plate suction structure 33 is quickly removed by the first X-direction translation structure 32.

[0051] In this embodiment, a second X-direction translation structure 42 is disposed on the other side of the main base 1 along the X-direction from the positioning table 2. A second fine-adjustment slide 41 is connected to the movable end of the second X-direction translation structure 42, and the fiber loading mechanism 4 is mounted on the second fine-adjustment slide 41. The second X-direction translation structure 42 is a second X-direction reciprocating structure comprising a second X-direction guide rail 421, a second X-direction slider 422, and a second X-direction actuator 423. The second X-direction slider 422 is guided and mounted on the second X-direction guide rail 421. The second X-direction actuator 423 is transmission-connected between the main base 1 and the second X-direction slider 422. The second fine-adjustment slide 41 is connected to the second X-direction slider 422. The second X-direction translation structure 42 drives the fiber clamping structure 43 to rapidly move along the X-direction. When the fiber is loaded onto the positioning table 2, the second fine-adjustment slide 41 is used to accurately adjust the fiber coupling position. After passive coupling is completed, the second X-direction translation structure 42 rapidly removes the fiber clamping structure 43.

[0052] Among them, the optical fiber clamp structure 43 includes a mounting plate 430, a first clamping platform 431 and a second clamping platform 432, and the first clamping platform 431 and the second clamping platform 432 are respectively adjustably installed on the mounting plate 430 along the Y direction; a first pressing groove 433 is provided on the first clamping platform 431, and a first pressing plate 434 is hingedly installed on the side of the first clamping platform 431 close to the positioning platform 2, and the first pressing plate 434 is used to press and fit with the optical fiber in the first pressing groove 433; a second pressing groove 435 is provided on the second clamping platform 432, and a second pressing plate 436 is hingedly installed on the side of the second clamping platform 432 close to the positioning platform 2, and the second pressing plate 436 is used to press and fit with the optical fiber in the second pressing groove 435. The width of the first pressing groove 433 of the first clamping platform 431 is greater than the width of the second pressing groove 435 of the second clamping platform 432, and optical fiber arrays of different specifications can be placed respectively. The first clamping platform 431 and the second clamping platform 432 can be adjusted to the coupling position along the Y direction, thereby achieving the purpose of switching optical fiber arrays of different specifications for loading and coupling.

[0053] It should be noted that the first fine-tuning slide 31 and the second fine-tuning slide 41 are six-axis fine-tuning slides, each with the following degrees of freedom: movement in the X-axis, movement in the Y-axis, movement in the Z-axis, rotation about the X-axis, rotation about the Y-axis, and rotation about the Z-axis. Both six-axis fine-tuning slides are equipped with movement and rotation adjustment knobs. The movement adjustment knob has an accuracy range of 1μm / turn to 5μm / turn, while the rotation adjustment knob has an accuracy range of 0.1° / turn to 5° / turn. This ensures the position and tilt angle of the optical fiber coupling, as well as the position and tilt angle of the cover plate pressing, ensuring high-precision passive coupling based on the flatness of the optical product.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A passive coupling device for optical products, characterized in that: The optical fiber loading mechanism comprises a main base, a positioning platform, a cover plate loading mechanism, an optical fiber loading mechanism, and an optical camera assembly disposed on the main base; the main base has X, Y, and Z directions intersecting in pairs, and the cover plate loading mechanism and the optical fiber loading mechanism are arranged on opposite sides of the positioning platform along the X direction; The cover plate feeding mechanism includes a first fine-tuning slide, a first X-direction translation structure and a cover plate suction structure, wherein the first fine-tuning slide is connected to the first X-direction translation structure and is arranged between the main base and the cover plate suction structure; The cover plate suction structure includes a fixed block, a movable block, and a suction head. The fixed block is mounted on the first fine-tuning slide or the first X-axis translation structure. The movable block is floatingly connected to the fixed block and is located below the fixed block. The suction head is fixedly connected to the movable block. A negative pressure air channel is provided inside the suction head for sucking the cover plate. The optical fiber feeding mechanism includes a second fine-tuning slide, a second X-direction translation structure and an optical fiber clamp structure, wherein the second fine-tuning slide is connected to the second X-direction translation structure and is arranged between the main base and the optical fiber clamp structure; The positioning platform is provided with a product positioning groove, and the optical camera assembly is arranged at intervals on the outside of the positioning platform, and the optical camera assembly is arranged opposite to the product positioning groove, for photographing the position where the optical fiber is coupled and the cover plate is attached; A floating gap is provided between the fixed block and the movable block, a groove is provided at the bottom of the fixed block, the length direction of the groove extends along the X-axis, a protrusion is provided at the top of the movable block, the cross-sectional profiles of the groove and the protrusion perpendicular to the X-axis are both arc-shaped, and the protrusion and the groove are relatively rotated around the X-axis; The suction head includes a horizontal section and a vertical section that are fixedly connected. The horizontal section extends along the X direction and is fixedly connected to the movable block. The vertical section is arranged at the end of the horizontal section away from the movable block. A cover plate snap is provided at the end of the vertical section, and the cover plate snap is connected to the negative pressure airway.

2. The passive coupling device for optical products according to claim 1, characterized in that: The main base is located on one side of the positioning platform along the X direction and is also provided with an X-direction coarse adjustment structure. The first fine adjustment slide is connected between the X-direction coarse adjustment structure and the first X-direction translation structure. The cover plate suction structure is installed at the moving end of the first X-direction translation structure.

3. The passive coupling device for optical products according to claim 2, characterized in that: The X-axis coarse adjustment structure includes a base plate, a slide plate and an X-axis coarse adjustment screw. The base plate is fixedly connected to the main base, and the slide plate is installed on the base plate for movement along the X-direction. The X-axis coarse adjustment screw is arranged on the base plate, and the slide plate is also provided with a protrusion for press-fitting with the X-axis coarse adjustment screw.

4. The passive coupling device for optical products according to claim 1, wherein: A bracket is also installed at the moving end of the first X-direction translation structure, and the brackets are arranged at intervals on the upper side of the cover plate suction structure. A UV lamp is installed at the end of the bracket away from the first X-direction translation structure, and the UV lamp is arranged toward the suction head.

5. The passive coupling device for optical products according to claim 2, wherein: The second X-direction translation structure is arranged on the other side of the main base along the X-direction of the positioning table, the second fine-tuning slide is connected to the moving end of the second X-direction translation structure, and the optical fiber clamp structure is installed on the second fine-tuning slide.

6. The passive coupling device for optical products according to claim 5, characterized in that: The optical fiber clamp structure includes a mounting plate, a first clamping platform and a second clamping platform, wherein the first clamping platform and the second clamping platform are respectively adjustable along the Y direction and mounted on the mounting plate; A first pressing groove is formed on the first clamping platform, and a first pressing plate is hingedly installed on one side of the first clamping platform close to the positioning platform, and the first pressing plate is used to press and fit the optical fiber in the first pressing groove; A second pressing groove is formed on the second clamping platform, and a second pressing plate is hingedly mounted on one side of the second clamping platform close to the positioning platform. The second pressing plate is used for pressing and fitting with the optical fiber in the second pressing groove.

7. The passive coupling device for optical products according to claim 1, characterized in that: The first fine-tuning slide and the second fine-tuning slide are respectively six-axis fine-tuning slides, which have the following degrees of freedom: movement along the X direction, movement along the Y direction, movement along the Z direction, rotation around the X axis, rotation around the Y axis, and rotation around the Z axis; The six-axis fine-tuning slide is equipped with a movable adjustment knob and a rotary adjustment knob. The precision range of the movable adjustment knob is 1 μm / turn to 5 μm / turn, and the precision range of the rotary adjustment knob is 0.1° / turn to 5° / turn.

8. The passive coupling device for optical products according to claim 5, characterized in that: The first X-direction translation structure is a first X-direction reciprocating structure, which includes a first X-direction guide rail, a first X-direction slider, and a first X-direction driver. The first X-direction slider is guided and mounted on the first X-direction guide rail. The first X-direction driver is transmission-connected between the first X-direction guide rail and the first X-direction slider. The fixed block is connected to the first X-direction slider. The second X-direction translation structure is a second X-direction reciprocating structure, which includes a second X-direction guide rail, a second X-direction slider and a second X-direction drive. The second X-direction slider is guided and installed on the second X-direction guide rail. The second X-direction drive is transmission-connected between the main base and the second X-direction slider. The second fine-tuning slide is connected to the second X-direction slider.

Images