CN110058355B

CN110058355B - Automatic coupling device and automatic coupling method

Info

Publication number: CN110058355B
Application number: CN201910207293.3A
Authority: CN
Inventors: 楚劲草; 谭书伟; 尹华林; 周园; 刘欢; 李礼
Original assignee: Accelink Technologies Co Ltd
Current assignee: Accelink Technologies Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-06-30
Anticipated expiration: 2039-03-19
Also published as: CN110058355A

Abstract

The invention discloses an automatic coupling device and an automatic coupling method, wherein the automatic coupling device is used for coupling a device to be coupled and an optical fiber, and comprises the following components: the clamping mechanism is arranged on the adjusting mechanism; the clamping mechanism comprises a sliding table and an elastic piece, and one end of the elastic piece is connected with the sliding table; the clamping mechanism is used for clamping the optical fiber; the adjusting mechanism is used for adjusting the posture of the clamping mechanism; in the process that the adjusting mechanism adjusts the posture of the clamping mechanism, the contact state between the optical fiber and the device to be coupled is monitored according to the change of the compression state of the elastic part, so that the end face of the optical fiber is parallel to the end face of the device to be coupled. The invention adopts the elastic element, can avoid the slide table from sliding backwards under the action of gravity in the process of adjusting the parallelism of the end surfaces, can more accurately monitor the change of the displacement of the slide table so as to effectively adjust the posture of the clamping mechanism, and ensures that the end surfaces of the optical fibers are parallel to the end surfaces of the devices to be coupled with better consistency.

Description

Automatic coupling device and automatic coupling method

Technical Field

The invention belongs to the technical field of optical device manufacturing, and particularly relates to an automatic coupling device and an automatic coupling method.

Background

Passive devices manufactured based on Planar Lightwave Circuit (PLC) technology include: array Waveguide Grating (AWG for short), array optical attenuator, etc., the aforementioned devices have the advantages of small size, low cost, easy integration, and suitability for mass production, etc., and have wide applications in the field of optical communications. The array waveguide device has narrow channels, the normal width of the channels is 4.4 μm by 4.4 μm, the number of the channels is large (typical values are 4CH, 24CH, 48CH or 96CH and the like), and the channel spacing is small (typical values are 127 μm and 254 μm and the like), so that the coupling difficulty in the production process is large, and the coupling efficiency is low. In addition, the arrayed waveguide device is coupled with an optical Fiber ribbon (Fiber Array, abbreviated as FA), for a ribbon made of single-mode fibers, the diameter of a Fiber core is 9 μm, the typical value of the space between the Fiber cores is 254 μm, and the difficulty is high when multiple channels of the ribbon are coupled with the arrayed waveguide device.

In actual manufacturing, the coupling of the array waveguide device and the optical fiber ribbon needs to be performed with glue dispensing and curing, and the curing glue between the two coupling planes participates in light propagation in the light path, so that the parallelism of the two planes and the distance between the two planes have a decisive influence on optical parameter indexes of the coupled device (for example, influence on insertion loss and return loss of the device). Meanwhile, in order to reduce the light reflected by the coupling end surface of the device and increase the return loss, the coupling end surface of the device is generally ground to a certain inclination angle, and correspondingly, the coupling end surface of the FA needs to be ground to a corresponding inclination angle. Therefore, the coupling end face of the device chip and the coupling end face of the FA form two parallel planes, and the distance between the two planes is a fixed value, which is difficult. The array waveguide device has low efficiency through manual coupling and poor device consistency.

The patent with publication number CN104880769B discloses an adjusting method for coupling alignment plane parallelism of an optical splitter, which mainly comprises two steps: (1) the primary adjustment FA position is approximately level with the PLC chip and in a substantially contacting state (close to each other, but not in contact). (2) Respectively rotating the FA in the vertical direction and the horizontal direction by +/-a degrees to enable the FA to collide with the PLC so as to enable the FA to generate displacement, and adjusting corresponding rotating angles according to the displacement condition so as to enable the two end faces of the FA and the PLC chip to be parallel.

For step (1): mainly depends on human eye observation, needs to reach micron level, and in the actual manufacturing process, not only the realization degree of difficulty is very big, and efficiency and rate of accuracy are all very low moreover, are not suitable for batch production. For step (2): if the angle a is too small, the FA and the PLC may not collide with each other; if the angle a is too large, the FA and the PLC may collide excessively, and the displacement amount and the rotation angle cannot be matched, so that the angle a may be too small or too large, which may result in failure to perform effective adjustment. In addition, when adjusting in the vertical direction, because the gravity action of FA mount table and FA, can make FA slide along the guide rail, namely collision force between FA and PLC and the gravity action of FA and PLC all can lead to FA to produce the displacement volume, and corotation (+ a angle) and reversal (-a angle) in-process, because the direction of the produced slip force of gravity action is different, make the gravity action can not cancel, it is difficult to adjust into parallel state with both ends face through the method of this patent, can appear even after adjusting both ends face to parallel state through this patent method, and the emergence of the condition that the two are not parallel in reality.

In view of the above, overcoming the drawbacks of the prior art is an urgent problem in the art.

Disclosure of Invention

The invention provides an automatic coupling device and an automatic coupling method aiming at overcoming the defects or the improvement requirements of the prior art, and aims to adopt an elastic part, avoid the slide table from sliding backwards under the action of gravity in the process of adjusting the parallelism of end surfaces, more accurately monitor the change of the displacement of the slide table, effectively adjust the posture of a clamping mechanism, enable the end surface of an optical fiber to be parallel to the end surface of a device to be coupled, have better consistency and be suitable for mass production. Therefore, the technical problems that the coupling difficulty of the optical fiber and the device to be coupled is high and the consistency of the device is poor at present are solved.

To achieve the above object, according to one aspect of the present invention, there is provided an automatic coupling apparatus for coupling a device to be coupled 1 and an optical fiber 2, the automatic coupling apparatus comprising: the clamping mechanism 3 and the adjusting mechanism 4, wherein the clamping mechanism 3 is arranged on the adjusting mechanism 4;

the clamping mechanism 3 comprises a sliding table 31 and an elastic piece 32, and one end of the elastic piece 32 is connected with the sliding table 31;

the clamping mechanism 3 is used for clamping the optical fiber 2; the adjusting mechanism 4 is used for adjusting the posture of the clamping mechanism 3;

in the process that the adjusting mechanism 4 adjusts the posture of the clamping mechanism 3, the contact state between the optical fiber 2 and the device to be coupled 1 is monitored according to the change of the compression state of the elastic piece 32, so that the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1.

Preferably, the clamping mechanism 3 further comprises a base 33 and a displacement sensor 341, the displacement sensor 341 is disposed on the base 33, and the other end of the elastic member 32 is connected to the base 33;

the displacement sensor 341 is configured to detect a displacement change of the sliding table 31 relative to the displacement sensor 341, so as to trigger the adjusting mechanism 4 to adjust the posture of the clamping mechanism 3;

the change of the compression state of the elastic element 32 is represented by a displacement change of the sliding table 31 relative to the displacement sensor 341.

Preferably, the clamping mechanism 3 further comprises a base 33 and a pressure sensor 342, the pressure sensor 342 is arranged on the base 33, and the other end of the elastic member 32 is connected with the pressure sensor 342;

the pressure sensor 342 is used for detecting the elastic force change of the elastic member 32 to trigger the adjusting mechanism 4 to adjust the posture of the clamping mechanism 3.

Preferably, a guide rail 35 is arranged on the base 33, and the sliding table 31 is slidably connected with the base 33 through the guide rail 35;

the guide rail 35 is provided with a limiting portion 351, and the limiting portion 351 and the elastic element 32 are respectively arranged on two sides of the sliding table 31, which are opposite to each other.

Preferably, the clamping mechanism 3 further comprises a positioning assembly 36, the positioning assembly 36 is arranged on the base 33, and the positioning assembly 36 and the elastic member 32 are located on the same side of the sliding table 31;

after the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1, the positioning assembly 36 abuts against the sliding table 31, so that the state of the elastic element 32 is maintained unchanged.

The automatic coupling device further comprises: a sensor 34 and a control system 6, wherein the control system 6 is respectively connected with the sensor 34 and the adjusting mechanism 4, and the sensor 34 is a displacement sensor 341 or a pressure sensor 342;

the sensor 34 is used for acquiring the change of the compression state of the elastic member 32 to monitor the touch state between the optical fiber 2 and the device to be coupled 1;

the control system 6 is configured to control the adjusting mechanism 4 to move according to a contact state between the optical fiber 2 and the device to be coupled 1, so as to adjust a posture of the clamping mechanism 3, so that an end face of the optical fiber 2 is parallel to an end face of the device to be coupled 1.

According to another aspect of the present invention, there is provided an automatic coupling method including:

clamping the optical fiber on a clamping mechanism, and fixing the device to be coupled on a fixed platform;

and adjusting the posture of the clamping mechanism through an adjusting mechanism, and detecting the compression state of the elastic part so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled.

Preferably, the adjusting the posture of the clamping mechanism by the adjusting mechanism and detecting the compression state of the elastic member so that the end face of the optical fiber is parallel to the end face of the device to be coupled includes:

moving the clamping mechanism in a direction close to the device to be coupled so that the end face of the optical fiber collides with the end face of the device to be coupled;

and rotating the clamping mechanism, and determining a target rotation angle according to the compression state of the elastic piece, wherein when the clamping mechanism is at the target rotation angle, the end face of the optical fiber is parallel to the end face of the device to be coupled.

Preferably, the rotating the clamping mechanism, determining the target rotation angle according to the compression state of the elastic member includes:

driving the clamping mechanism to rotate within a preset angle range through a first rotation adjusting assembly, and determining a first target rotation angle corresponding to the first rotation adjusting assembly according to the compression state of the elastic piece so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled in the Y-axis direction;

driving the clamping mechanism to rotate within a preset angle range through a second rotation adjusting assembly, and determining a second target rotation angle corresponding to the second rotation adjusting assembly according to the compression state of the elastic piece so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled in the X-axis direction;

and adjusting the first rotation adjusting assembly to a first target rotation angle, and adjusting the second rotation adjusting assembly to a second target rotation angle, so that the end face of the optical fiber is parallel to the end face of the device to be coupled.

Preferably, the driving, by the first rotation adjusting assembly, the clamping mechanism to rotate within a preset angle range, and determining a first target rotation angle corresponding to the first rotation adjusting assembly according to a compression state of the elastic member, so that the end face of the optical fiber and the end face of the device to be coupled are parallel in the Y-axis direction includes:

dividing the preset angle range into a plurality of rotation angles;

adjusting the first rotation adjusting assembly to rotate to a corresponding rotation angle, and acquiring the distance between the sliding table of the clamping mechanism and the base of the clamping mechanism at each rotation angle;

and setting a corresponding rotation angle when the distance between the sliding table of the clamping mechanism and the base of the clamping mechanism is the maximum value as a first target rotation angle, wherein when the first rotation adjusting assembly rotates to the first target rotation angle, the end face of the optical fiber is parallel to the end face of the device to be coupled in the Y-axis direction.

Generally, compared with the prior art, the technical scheme of the invention has the following beneficial effects: the automatic coupling device provided by the invention is used for coupling a device to be coupled and an optical fiber, and comprises: the clamping mechanism is arranged on the adjusting mechanism and comprises a sliding table and an elastic piece, one end of the elastic piece is connected with the sliding table, and the clamping mechanism is used for clamping the optical fiber; the adjusting mechanism is used for adjusting the posture of the clamping mechanism so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled. According to the automatic coupling device, in the process that the adjusting mechanism adjusts the posture of the clamping mechanism, the elastic piece is in a compression state, the sliding table can be prevented from sliding backwards under the action of gravity in the process of adjusting the parallelism of the end faces, the displacement change of the sliding table can be monitored more accurately, the posture of the clamping mechanism can be effectively adjusted, the end face of the optical fiber is enabled to be parallel to the end face of the device to be coupled, and the consistency is good.

Furthermore, the automatic coupling device adopts a full-automatic mode, can effectively improve the coupling efficiency and accuracy, and is suitable for batch production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of an automatic coupling device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a clamping mechanism according to an embodiment of the present invention;

fig. 3 is a schematic front view of a clamping mechanism provided in this embodiment;

FIG. 4 is a schematic top view of a clamping mechanism according to the present embodiment;

FIG. 5 is a schematic structural diagram of another automatic coupling device provided in the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another automatic coupling device provided in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a clamping mechanism in a first state according to an embodiment of the present invention;

FIG. 8 is a schematic view of the change in length of the resilient member during rotation of the second rotary adjustment assembly about the Y-axis according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a fitted curve of rotation angle versus displacement according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of the position of an optical fiber relative to a device to be coupled when the center of rotation is adjusted according to an embodiment of the present invention;

fig. 11 is a schematic circuit diagram of an automatic coupling device according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of another clamping mechanism provided in accordance with an embodiment of the present invention;

FIG. 13 is a schematic view of a fitted curve of rotation angle versus pressure provided by an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an automatic coupling method according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The XYZ coordinate system corresponding to each drawing of the present invention is established with reference to the base of the fixed platform or the holding mechanism. In a specific application scenario, the Z-axis represents the horizontal direction and the Y-axis represents the vertical direction. The XYZ coordinate system may also be established according to other reference objects, and the directions of the X axis, the Y axis and the Z axis may be determined according to actual situations, and are not limited herein.

Example 1:

referring to fig. 1 and 2, the present embodiment provides an automatic coupling apparatus for coupling a device to be coupled 1 and an optical fiber 2, the automatic coupling apparatus comprising: the clamping mechanism 3 and the adjusting mechanism 4, the clamping mechanism 3 is arranged on the adjusting mechanism 4.

In this embodiment, the clamping mechanism 3 includes a slide table 31 and an elastic member 32, and one end of the elastic member 32 is connected to the slide table 31. The elastic member 32 may be a spring, and the elastic force of the spring is not too large, which may cause the edge breakage of the device to be coupled 1. In an alternative embodiment, the maximum load of the spring is 4N, the spring constant is greater than 1.0N/mm, and in an actual design process, the friction force when the sliding table 31 slides and other factors may be considered comprehensively, and the spring with appropriate parameters may be selected, which is not specifically limited herein.

In the actual adjusting process, the clamping mechanism 3 is used for clamping the optical fiber 2, the adjusting mechanism 4 is used for adjusting the posture of the clamping mechanism 3, and in the process that the adjusting mechanism 4 adjusts the posture of the clamping mechanism 3, the contact state between the optical fiber 2 and the device to be coupled 1 is monitored according to the change of the compression state of the elastic piece 32, so that the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1.

The automatic coupling device of this embodiment, at the in-process that adjustment mechanism 4 adjusted fixture 3's gesture, elastic component 32 is in compression state, can avoid the in-process slip table 31 in the regulation terminal surface depth of parallelism backsliding under the effect of gravity, can monitor the displacement volume change of slip table 31 more accurately to effectively adjust fixture 3's gesture, make the terminal surface of optic fibre 2 parallel with the terminal surface of waiting to couple device 1, and the uniformity is better.

In a specific application scenario, the adjusting mechanism 4 adjusts the posture of the clamping mechanism 3 according to the compression state of the elastic member 32. With continued reference to fig. 2, an alternative scenario exists for this embodiment: the clamping mechanism 3 further comprises a base 33 and a displacement sensor 341, the displacement sensor 341 is arranged on the base 33, and the other end of the elastic member 32 is connected with the base 33; the displacement sensor 341 is configured to detect a displacement change of the sliding table 31 relative to the displacement sensor 341, so as to trigger the adjusting mechanism 4 to adjust the posture of the clamping mechanism 3. The change of the compression state of the elastic element 32 is represented by a displacement change of the sliding table 31 relative to the displacement sensor 341.

Specifically, the displacement sensor 341 is a precise device and can detect displacement change of a micron level, the probe of the displacement sensor 341 is disposed toward the sliding table 31, the displacement sensor 341 converts a weak displacement change between the sliding table 31 and the probe of the displacement sensor 341 into a current value change, and detects the displacement of the sliding table 31 according to the current value change, thereby monitoring the collision state between the end surface of the optical fiber 2 and the end surface of the device to be coupled 1.

Further, a guide rail 35 is arranged on the base 33, and the sliding table 31 is slidably connected with the base 33 through the guide rail 35; the guide rail 35 is provided with a limiting portion 351, and the limiting portion 351 and the elastic element 32 are respectively arranged on two sides of the sliding table 31, which are opposite to each other. The guide rail 35 is a precision device, the friction force is small, and the sliding table 31 can smoothly and freely slide on the guide rail 35.

In a specific application scenario, as shown in fig. 2, when the device to be coupled 1 and the optical fiber 2 are not yet in contact, the sliding table 31 is in an initial state relative to the base 33, at this time, the left end of the sliding table 31 abuts against the limiting portion 351, and the elastic member 32 is in a compressed state, so that the force applied to the left end of the sliding table 31 and the force applied to the right end of the sliding table 31 reach a balanced state.

In a preferred embodiment, a sufficient initial distance should be reserved between the probe of the displacement sensor 341 and the sliding table 31 to prevent the sliding table 31 from colliding with the probe of the displacement sensor 341 when the sliding table 31 moves in a direction approaching the displacement sensor 341. Here, the initial distance refers to a distance between the probe of the displacement sensor 341 and the slide table 31 when the slide table 31 is in the initial state with respect to the base 33. The initial distance may be any value from 300 μm to 1000 μm, depending on the actual situation.

In this embodiment, the clamping mechanism 3 further includes a positioning assembly 36, the positioning assembly 36 is disposed on the base 33, and the positioning assembly 36 and the elastic member 32 are located on the same side of the sliding table 31; after the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1, the positioning assembly 36 abuts against the sliding table 31, so that the state of the elastic element 32 is maintained unchanged, and the end face of the optical fiber 2 and the end face of the device to be coupled 1 are further ensured to be a fixed value. And then, filling ultraviolet glue between the end face of the optical fiber 2 and the end face of the device to be coupled 1 by using a capillary principle, and irradiating and curing the ultraviolet glue by using an ultraviolet lamp, thereby completing the coupling of the optical fiber 2 and the device to be coupled 1.

In an alternative embodiment, positioning assembly 36 is pneumatically controlled and solenoid valves switch pneumatic passages in positioning assembly 36 to switch positioning assembly 36 between the eject and rebound states. In a practical application scenario, in the process of adjusting the parallelism between the end face of the device to be coupled 1 and the end face of the optical fiber 2, the positioning assembly 36 is in a rebound state (as shown in fig. 2), and does not apply a force to the sliding table 31; after parallelism adjustment is completed and before dispensing is performed, the positioning assembly 36 is in an ejection state and abuts against the sliding table 31 to apply force to the sliding table 31, so that the sliding table 31 is prevented from compressing the elastic piece 32 to move in the dispensing process, and the distance between the device to be coupled 1 and the optical fiber 2 is ensured to be fixed.

In an actual application scenario, the clamping mechanism 3 further includes a clamping block 37, the clamping block 37 is disposed on the sliding table 31, and the clamping block 37 is used for clamping the optical fiber 2. The clamping block 37 can be laterally clamped or pressed downwards, a proper clamping mode can be selected according to the structural form of the device to be coupled 1, however, when the lateral clamping type clamping block 37 is used for clamping the optical fiber 2, the width consistency of the side face of the optical fiber 2 is good, the optical fiber 2 is convenient to clamp, and the clamping mode is preferable.

As shown in fig. 3 and 4, a specific clamping mechanism 3 is shown. The clamping block 37 includes a first clamping portion 371, a second clamping portion 372 and an adjusting portion 373, the optical fiber 2 is disposed between the first clamping portion 371 and the second clamping portion 372, and the adjusting portion 373 is used for adjusting the distance between the first clamping portion 371 and the second clamping portion 372 to adapt to clamp optical fibers 2 of different sizes.

In a specific application scenario, the automatic coupling apparatus further includes a fixing platform 5, and the fixing platform 5 is used for fixing the device to be coupled 1. The adjusting mechanism 4 includes an X-axis adjusting assembly 41, a Y-axis adjusting assembly 42, a Z-axis adjusting assembly 43, a first rotating adjusting assembly 44, and a second rotating adjusting assembly 45, wherein the first rotating adjusting assembly 44 rotates along the X-axis, and the second rotating adjusting assembly 45 rotates along the Y-axis. The adjusting mechanism 4 further comprises a third rotary adjusting assembly 46, and the third rotary adjusting assembly 46 rotates along the Z axis. In this embodiment, the adjusting mechanism 4 can complete six-degree-of-freedom adjustment, so as to adjust the posture of the clamping mechanism 3, so that the end face of the device to be coupled 1 is parallel to the end face of the optical fiber 2. Under the specific application scene, each adjusting component in adjusting mechanism 4 all can be by motor control, improves the automation.

In an alternative, the number of the adjusting mechanism 4 and the clamping mechanism 3 may be one, as shown in fig. 1, the adjusting mechanism 4 and the clamping mechanism 3 are both disposed on the right side of the fixed platform 5, or, as shown in fig. 5, the adjusting mechanism 4 and the clamping mechanism 3 are both disposed on the left side of the fixed platform 5, and only one end face of one side is coupled in one coupling operation.

In another alternative, as shown in fig. 6, the number of the adjusting mechanism 4 and the clamping mechanism 3 may be two, specifically, the adjusting mechanism 4 specifically includes a first adjusting mechanism 4-1 and a second adjusting mechanism 4-2; the number of the clamping mechanisms 3 is two, and the clamping mechanisms 3 specifically comprise first clamping mechanisms 3-1 and second clamping mechanisms 3-2. The first clamping mechanism 3-1 is arranged on the first adjusting mechanism 4-1, and the second clamping mechanism 3-2 is arranged on the second adjusting mechanism 4-2; the first clamping mechanism 3-1 and the second clamping mechanism 3-2 are oppositely arranged relative to the fixed platform 5; the first adjusting mechanism 4-1 and the second adjusting mechanism 4-2 are oppositely arranged relative to the fixed platform 5. The automatic coupling device is not only suitable for single-side coupling but also suitable for double-side coupling, can complete the coupling of end faces at two sides simultaneously through one-time coupling operation, and is particularly suitable for scenes in which the input end of the device to be coupled 1 and the output end of the device to be coupled 1 need to be coupled with the optical fiber 2.

Here, the automatic coupling process of the present embodiment will be explained by taking the right end face of the device to be coupled 1 coupled to the optical fiber 2 as an example. Firstly, a device 1 to be coupled is fixed on a fixed platform 5, an optical fiber 2 is clamped on a clamping component, and then the posture of a clamping mechanism 3 is adjusted through an adjusting component, and the method comprises the following specific steps:

step (1): the Z-axis adjusting assembly 43 drives the clamping mechanism 3 to move to the left, and in the process, the left side of the sliding table 31 abuts against the limiting portion 351, and the spring is in a compressed state (as shown in fig. 2, the sliding table 31 is in the aforementioned initial state).

Step (2): when the optical fiber 2 touches the device 1 to be coupled, the sliding table 31 stops moving, the Z-axis adjusting assembly 43 drives the clamping mechanism 3 to continue moving to the left side, as shown in fig. 7, the left end of the sliding table 31 no longer abuts against the limiting portion 351 (the elastic member 32 cooperates with the device 1 to be coupled, so that the sliding table 31 stops moving), and at this time, the elastic member 32 is further compressed. Generally speaking, in order to ensure that the optical fiber 2 and the device 1 to be coupled are always in contact state in the subsequent rotation, after the optical fiber 2 touches the device 1 to be coupled, the Z-axis adjusting assembly 43 drives the clamping mechanism 3 to move to the left by 50 μm to 100 μm, and at this time, the compression amount of the elastic member 32 is further compressed by 50 μm to 100 μm relative to step (1). In this step, a change in displacement between the slide table 31 and the displacement sensor 341 is detected by the displacement sensor 341 to determine the amount of compression of the elastic member 32.

And (3): the clamping mechanism 3 is driven to rotate within a preset angle range by the second rotation adjusting assembly 45, and a second target rotation angle corresponding to the second rotation adjusting assembly 45 is determined according to the compression state of the elastic member 32, so that the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1 in the X-axis direction. The preset angle range can be-10 degrees to +10 degrees, and the preset angle range can be determined according to the plane size of the coupling plane.

In this process, every time the sliding table rotates by one angle, the compression amount of the elastic member 32 continuously changes, the displacement sensor 341 detects the change of the distance, and a graph (as shown in fig. 9) is drawn to determine the distance between the lower sliding table 31 (as shown in fig. 2, the right end surface of the sliding table 31) and the base 33 at different rotation angles, and the corresponding rotation angle when the distance between the sliding table 31 and the base 33 is the maximum value is the second target rotation angle. The distance between the sliding table 31 and the base 33 is embodied as the distance between the sliding table 31 and the base 33, and in the process of programming, the distance between the sliding table 31 and the base 33 only needs to be determined.

In the rotation process, the compression amount of the elastic member 32 is continuously changed, so that the distance between the sliding table 31 and the base 33 (the length of the elastic member 32) is continuously changed, when the end surface of the device to be coupled 1 is parallel to the end surface of the optical fiber 2, the force applied to the left side of the sliding table 31 is minimum, the energy released by the elastic member 32 is maximum, at this time, the compression amount of the elastic member 32 is minimum, and the distance between the sliding table 31 and the base 33 is maximum. Assuming that a preset angle is divided into three nodes, during the rotation, the distance between the slide table 31 and the base 33 at each rotation angle is detected, as shown in fig. 8, L2 is greater than L1, and L2 is greater than L3, then the corresponding rotation angle when the distance between the slide table 31 and the base 33 is L2 is the second target rotation angle, and when the first rotation adjusting assembly 44 rotates to the second target rotation angle, the end surface of the optical fiber 2 is parallel to the end surface of the device to be coupled 1 in the X-axis direction.

After the second target rotation angle is determined, the second rotation adjusting assembly 45 is rotated again to the second target rotation angle, at this time, the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1 in the X-axis direction.

And (4): after the adjustment in step (3), the compression amount of the elastic member 32 is reduced relative to that in step (2), and in order to ensure that the optical fiber 2 and the device to be coupled 1 are always in a contact state in the subsequent rotation, the Z-axis adjusting assembly 43 drives the clamping mechanism 3 to continue moving to the left side, so that the compression amount of the elastic member 32 is substantially equal to that in step (2).

And (5): the clamping mechanism 3 is driven to rotate within a preset angle range by the first rotation adjusting assembly 44, and a first target rotation angle corresponding to the first rotation adjusting assembly 44 is determined according to the compression state of the elastic member 32, so that the end face of the optical fiber 2 is parallel to the end face of the device to be coupled 1 in the Y-axis direction. The preset angle range can be-15 to +15 degrees, and the preset angle range can be determined according to the plane size of the coupling plane.

In the process, the compression amount of the elastic member 32 continuously changes every time the sliding table rotates by one angle, the displacement sensor 341 detects the distance change, and a graph is drawn to determine the distance between the sliding table 31 and the base 33 at different rotation angles.

The rotation angle corresponding to the maximum distance between the slide table 31 and the base 33 is the first target rotation angle of the first rotation adjusting assembly 44. The first rotation adjusting assembly 44 is rotated again to the first target rotation angle, at which the end face of the optical fiber 2 and the end face of the device to be coupled 1 are parallel in the Y-axis direction. The specific principle is the same as that of step (3), and is not described herein again.

According to the principle that two intersected straight lines in one plane are respectively parallel to the other plane, and the plane is parallel to the other plane, the end face of the device to be coupled 1 is judged to be parallel to the end face of the optical fiber 2.

And (6): the Z-axis adjusting assembly 43 drives the clamping mechanism 3 to move to the right, the elastic element 32 releases the elastic force, the displacement between the sliding table 31 and the displacement sensor 341 increases gradually, until the end surface of the device to be coupled 1 is separated from the end surface of the optical fiber 2, the sliding table 31 is abutted to the limiting portion 351 again, and the displacement between the sliding table 31 and the displacement sensor 341 remains unchanged, which indicates that the end surface of the device to be coupled 1 is separated from the end surface of the optical fiber 2. According to actual requirements, the Z-axis adjusting component 43 drives the clamping mechanism 3 to move to the right, so that the distance between the end surface of the device to be coupled 1 and the end surface of the optical fiber 2 is a specified value, wherein the specified value may be 50 μm or other values, and may be determined according to the refractive index of the ultraviolet glue.

And (7): the Z-axis adjusting unit 43 stops moving after the distance between the end face of the to-be-coupled device 1 and the end face of the optical fiber 2 is a specified value. The positioning assembly 36 switches the cylinder loop, switches the positioning assembly 36 to the ejection state, and the positioning assembly 36 abuts against the sliding table 31 to ensure that the distance between the end face of the device to be coupled 1 and the end face of the optical fiber 2 is kept unchanged.

And (8): dispensing is carried out between the end face of the device to be coupled 1 and the end face of the optical fiber 2, ultraviolet glue is filled between the end face of the device to be coupled 1 and the end face of the optical fiber 2 according to the capillary principle and the air pressure difference between planes, and the ultraviolet glue is irradiated and cured by an ultraviolet lamp, so that the coupling of the end face of the device to be coupled 1 and the end face of the optical fiber 2 is completed.

The order of the adjustment in the X-axis direction and the adjustment in the Y-axis direction is not specifically limited, and the posture of the clamping mechanism 3 may be adjusted by the first rotation adjusting assembly 44 first, so that the end face of the device 1 to be coupled is parallel to the end face of the optical fiber 2 in the Y-axis direction, and then the posture of the clamping mechanism 3 is adjusted by the second rotation adjusting assembly 45, so that the end face of the device 1 to be coupled is parallel to the end face of the optical fiber 2 in the X-axis direction. Or, the posture of the clamping mechanism 3 may be adjusted by the second rotation adjusting component 45, so that the end surface of the device to be coupled 1 is parallel to the end surface of the optical fiber 2 in the X-axis direction, and then the posture of the clamping mechanism 3 may be adjusted by the first rotation adjusting component 44, so that the end surface of the device to be coupled 1 is parallel to the end surface of the optical fiber 2 in the Y-axis direction. The specific adjustment sequence may be determined according to actual conditions, and is not specifically limited herein.

In this embodiment, between the step (1), in order to ensure that the device to be coupled 1 and the optical fiber 2 can collide with each other, and to ensure that the end surface of the device to be coupled 1 and the end surface of the optical fiber 2 can be adjusted to be parallel by rotation, the rotation center of the first rotation adjusting member 44 and the rotation center of the second rotation adjusting member 45 need to be adjusted within the contact section between the device to be coupled 1 and the optical fiber 2.

Here, the adjustment of the rotation center of the second rotation adjusting member 45 is explained as an example. First, the posture of the clamping mechanism 3 is adjusted by the X-axis adjusting assembly 41 and the Y-axis adjusting assembly 42, and then the second rotating adjusting assembly 45 rotates by + a degrees, as shown in fig. 10, two end points of the optical fiber 2 are respectively located at A1 and A2, and then the second rotating adjusting assembly 45 rotates by-a degrees, two end points of the optical fiber 2 are respectively located at B1 and B2, and are respectively connected to A1 and B1, and A2 and B2, and respectively make a perpendicular bisector of A1B1 and a perpendicular bisector of A2B2, and the perpendicular bisector of A1B1 and the perpendicular bisector of A2B2 intersect at a point C, and the point C is located in the contact zone. The adjustment principle of the rotation center of the first rotation adjusting assembly 44 is the same, and the adjustment can be performed by referring to the foregoing process, and the detailed description is omitted here.

In a specific application scenario, as shown in fig. 11, the automatic coupling device further includes a control system 6, a lens observation system 7, and an ultraviolet curing system 8, where the control system 6 is connected to the adjustment mechanism 4, the sensor 34, the positioning assembly 36, the lens observation system 7, and the ultraviolet curing system 8, respectively. The sensor 34 may be the displacement sensor 341 of the present embodiment, or may be the pressure sensor 342 of embodiment 2. Wherein the alignment of the channels during the coupling process can be observed by visual support provided by the lens observation system 7. In an alternative embodiment, the lens viewing system 7 has two lenses, with viewing angles of top and front views respectively.

The control system 6 controls the adjusting mechanism 4 to operate according to the detection result of the sensor 34 and/or the lens observing system 7, so as to adjust the posture of the clamping mechanism 3.

Specifically, the sensor 34 is used for acquiring the change of the compression state of the elastic member 32 to monitor the touching state between the optical fiber 2 and the device to be coupled 1; the control system 6 is configured to control the adjusting mechanism 4 to move according to a contact state between the optical fiber 2 and the device to be coupled 1, so as to adjust a posture of the clamping mechanism 3, so that an end face of the optical fiber 2 is parallel to an end face of the device to be coupled 1.

The control system 6 is further configured to control the pneumatic components in the positioning assembly 36 to actuate and switch the cylinder circuit according to the detection result of the sensor 34 and/or the lens observing system 7, so as to switch the state of the positioning assembly 36. The control system 6 is also used for controlling the ultraviolet curing system 8 to perform dispensing and ultraviolet curing.

The automatic coupling device adopts a full-automatic mode, can effectively improve the coupling efficiency and accuracy, and is suitable for batch production.

In the process of driving the clamping mechanism 3 to rotate and find the parallel by the first rotation adjusting assembly 44 and the second rotation adjusting assembly 45, the elastic member 32 of the automatic coupling device of the embodiment can eliminate the influence of partial gravity (mainly the gravity of the sliding table 31), but cannot eliminate the influence of gravity fundamentally. In a preferred embodiment, a comparison table may be pre-established, the displacement caused by the gravity action of the sliding table 31 at each rotation angle is recorded, and the control system 6 compensates the distance between the sliding table 31 and the base 33 corresponding to the rotation angle in the steps (3) and (5) by looking up the comparison table, so as to obtain a more accurate distance and improve the accuracy and precision.

Example 2:

in contrast to embodiment 1, there is another alternative to this embodiment, in which the compressed state of the elastic member 32 is detected, so that the adjustment mechanism 4 adjusts the posture of the gripping mechanism 3. As shown in fig. 12, the clamping mechanism 3 further includes a pressure sensor 342, the pressure sensor 342 is disposed on the base 33, and the other end of the elastic member 32 is connected to the pressure sensor 342; the pressure sensor 342 is used for detecting the elastic force change of the elastic member 32 to trigger the adjusting mechanism 4 to adjust the posture of the clamping mechanism 3.

The present embodiment detects the change in the elastic force of the elastic member 32 by the pressure sensor 342 to determine the compression state of the elastic member 32, and determines the distance between the slide table 31 (as shown in fig. 12, the right end surface of the slide table 31) and the base 33 and thus the posture of the chucking mechanism 3.

Other components, the positional relationship between the components, and the positional relationship between the components of the automatic coupling device of this embodiment are substantially the same as those of embodiment 1, and are not described herein again. The method of automatic coupling is substantially the same, except that there are differences in the method of detecting the amount of compression of the spring, and in embodiment 1, the posture of the gripping mechanism 3 is adjusted by determining the amount of compression of the elastic member 32 by detecting the change in displacement between the slide table 31 and the displacement sensor 341, and in this embodiment, the posture of the gripping mechanism 3 is adjusted by determining the amount of compression of the elastic member 32 by directly detecting the change in elasticity of the elastic member 32.

With respect to the step (3) and the step (5) in the embodiment 1, the embodiment 1 determines the target rotation angle through the fitted curve of the rotation angle and the distance between the sliding table 31 and the base 33, and the embodiment determines the target rotation angle through the fitted curve of the rotation angle and the pressure (as shown in fig. 13), and the essence of both is to determine the distance between the sliding table 31 and the base 33, and mainly there is a difference in the detected dimension.

In the present embodiment, the first target rotation angle and the second target rotation angle are determined by detecting the magnitude of the pressure, and when the end surface of the to-be-coupled device 1 is parallel to the end surface of the optical fiber 2 on the X axis or the Y axis, the pressure detected by the pressure sensor 342 is the smallest (the distance between the slide table 31 and the base 33 is the largest), and the rotation angle corresponding to the smallest pressure is the corresponding target rotation angle.

Other coupling processes are similar to those in embodiment 1, please refer to steps (1) to (8) in embodiment 1 for details, and are not repeated herein.

Example 3:

an embodiment of the present invention provides an automatic coupling method, which is applicable to the automatic coupling device in embodiment 1 or embodiment 2.

As shown in fig. 14, the automatic coupling method of the present embodiment includes the following steps:

step 10: and clamping the optical fiber on the clamping mechanism, and fixing the device to be coupled on the fixed platform.

Step 11: and adjusting the posture of the clamping mechanism through an adjusting mechanism, and detecting the compression state of the elastic part so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled.

In a specific application scenario, the sensor acquires the change of the compression state of the elastic part so as to monitor the touch state between the optical fiber and the device to be coupled. And the control system controls the adjusting mechanism to move according to the contact state between the optical fiber and the device to be coupled so as to adjust the posture of the clamping mechanism, so that the end face of the optical fiber is parallel to the end face of the device to be coupled.

And moving the clamping mechanism in the direction close to the device to be coupled so as to enable the end face of the optical fiber to collide with the end face of the device to be coupled, rotating the clamping mechanism, and determining a target rotation angle according to the compression state of the elastic piece, wherein when the clamping mechanism is at the target rotation angle, the end face of the optical fiber is parallel to the end face of the device to be coupled.

Specifically, first, the posture of the clamping mechanism is adjusted by the Z-axis adjusting assembly so that the end face of the optical fiber collides with the end face of the device to be coupled. Then, the clamping mechanism is driven to rotate within a preset angle range through a first rotation adjusting assembly, and a first target rotation angle corresponding to the first rotation adjusting assembly is determined according to the compression state of the elastic piece, so that the end face of the optical fiber is parallel to the end face of the device to be coupled in the Y-axis direction.

In an alternative embodiment, the preset angle range is divided into a plurality of rotation angles, where the preset angle range may be-10 ° - +10 °, for example, the preset angle range may be divided into n nodes, each node corresponds to one rotation angle, and a specific value of n is determined according to an actual situation.

And adjusting the first rotating adjusting assembly to rotate to a corresponding rotating angle, and acquiring the distance between the sliding table of the clamping mechanism and the base of the clamping mechanism at each rotating angle. Specifically, a fitting curve (which may depend on the type of the sensor) as shown in fig. 9 or fig. 13 may be obtained, and the rotation angle corresponding to the maximum distance between the slide table and the base may be determined.

And setting a corresponding rotation angle when the distance between the sliding table and the base is the maximum value as a first target rotation angle, wherein when the first rotation adjusting assembly rotates to the first target rotation angle, the end face of the optical fiber is parallel to the end face of the device to be coupled in the Y-axis direction.

And adjusting the first rotation adjusting assembly to a first target rotation angle, and determining a second target rotation angle corresponding to the second rotation adjusting assembly in a similar manner. The method comprises the following specific steps:

and driving the clamping mechanism to rotate within a preset angle range through a second rotation adjusting assembly, and determining a second target rotation angle corresponding to the second rotation adjusting assembly according to the compression state of the elastic piece so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled in the X-axis direction.

In an alternative embodiment, the preset angle range is divided into a plurality of rotation angles, where the preset angle range may be-15 ° - +15 °, for example, the preset angle range may be divided into n nodes, each node corresponds to one rotation angle, and a specific value of n is determined according to an actual situation.

And adjusting the second rotation adjusting assembly to rotate to a corresponding rotation angle, and acquiring the distance between the sliding table of the clamping mechanism and the base of the clamping mechanism at each rotation angle. Specifically, a fitting curve (which may depend on the type of the sensor) as shown in fig. 9 or fig. 13 may be obtained, and the rotation angle corresponding to the maximum distance between the slide table and the base may be determined.

And setting a corresponding rotation angle when the distance between the sliding table and the base is the maximum value as a second target rotation angle, wherein when the second rotation adjusting assembly rotates to the second target rotation angle, the end face of the optical fiber is parallel to the end face of the device to be coupled in the X-axis direction.

And after the second rotation adjusting assembly is adjusted to a second target rotation angle, judging that the end face of the device to be coupled is parallel to the end face of the optical fiber according to the principle that two intersected straight lines in one plane are respectively parallel to the other plane, and the plane is parallel to the other plane.

Further, Z axle adjusting part drives fixture and moves to the right side, and the elastic component releases elasticity, and the displacement between slip table and the displacement sensor increases gradually, and until the terminal surface of waiting to couple the device breaks away from the back with the terminal surface of optic fibre, the spacing portion of slip table butt again, the displacement between slip table and the displacement sensor keeps unchangeable, shows that the terminal surface of waiting to couple the device just breaks away from with the terminal surface of optic fibre. According to actual requirements, the Z-axis adjusting assembly drives the clamping mechanism to move towards the right side continuously, so that the distance between the end face of the device to be coupled and the end face of the optical fiber is a specified value, wherein the specified value can be 50 micrometers or other values and can be determined according to the refractive index of the ultraviolet adhesive.

And after the distance between the end face of the device to be coupled and the end face of the optical fiber is a specified value, the Z-axis adjusting component stops moving. The positioning assembly switches the cylinder loop, switches the positioning assembly to an ejection state, and abuts against the sliding table to ensure that the distance between the end face of the device to be coupled and the end face of the optical fiber is kept unchanged.

And finally, dispensing between the end face of the device to be coupled and the end face of the optical fiber, filling ultraviolet glue between the end face of the device to be coupled and the end face of the optical fiber according to a capillary principle and the air pressure difference between planes, and irradiating and curing the ultraviolet glue by adopting an ultraviolet lamp so as to finish the coupling between the end face of the device to be coupled and the end face of the optical fiber.

The sequence of the adjustment in the X-axis direction and the adjustment in the Y-axis direction is not specifically limited, the posture of the clamping mechanism can be adjusted through the first rotating adjusting assembly firstly, so that the end face of the device to be coupled is parallel to the end face of the optical fiber in the Y-axis direction, and then the posture of the clamping mechanism is adjusted through the second rotating adjusting assembly, so that the end face of the device to be coupled is parallel to the end face of the optical fiber in the X-axis direction. Or the posture of the clamping mechanism can be adjusted through the second rotation adjusting assembly, so that the end face of the device to be coupled is parallel to the end face of the optical fiber in the X-axis direction, and then the posture of the clamping mechanism is adjusted through the first rotation adjusting assembly, so that the end face of the device to be coupled is parallel to the end face of the optical fiber in the Y-axis direction. The specific adjustment sequence may be determined according to actual conditions, and is not specifically limited herein.

In the process of driving the clamping mechanism to rotate and find the parallelism by the first rotating adjusting assembly and the second rotating adjusting assembly, the elastic part of the automatic coupling device of the embodiment can eliminate the influence of partial gravity (mainly the gravity of the sliding table), but the influence of the gravity cannot be eliminated fundamentally. In a preferred embodiment, a comparison table may be pre-established, the displacement caused by the gravity action of the sliding table at each rotation angle is recorded, and the control system compensates the distance between the sliding table and the base corresponding to the rotation angle in step 11 by looking up the comparison table, so as to eliminate the influence of gravity, obtain a more accurate distance, and improve the accuracy and precision.

Other processes related to the automatic coupling method can be seen in embodiment 1, and are not described herein again.

The automatic coupling device and the automatic coupling method at least have the following advantages: in the process of adjusting the posture of the clamping mechanism by the adjusting mechanism, the elastic part is in a compression state, the sliding table can be prevented from sliding backwards under the action of gravity in the process of adjusting the parallelism of the end face, the change of the displacement of the sliding table can be more accurately monitored, the posture of the clamping mechanism is effectively adjusted, the end face of the optical fiber is parallel to the end face of the device to be coupled, and the consistency is better.

Furthermore, in the leveling process, the angle range is divided into a plurality of nodes, the corresponding angle when the end faces are parallel is determined according to the distance between the sliding table under each node and the base, and the accuracy is high. In addition, the automatic coupling device adopts a full-automatic mode, can effectively improve the coupling efficiency, and is suitable for batch production.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An automatic coupling device for coupling a device to be coupled (1) with an optical fibre (2), characterized in that it comprises: the clamping mechanism (3) and the adjusting mechanism (4), wherein the clamping mechanism (3) is arranged on the adjusting mechanism (4);

the clamping mechanism (3) comprises a sliding table (31) and an elastic piece (32), and one end of the elastic piece (32) is connected with the sliding table (31);

the clamping mechanism (3) is used for clamping the optical fiber (2); the adjusting mechanism (4) is used for adjusting the posture of the clamping mechanism (3);

the automatic coupling device further comprises: a sensor (34) and a control system (6), wherein the control system (6) is respectively connected with the sensor (34) and the adjusting mechanism (4), and the sensor (34) is a displacement sensor (341) or a pressure sensor (342);

the sensor (34) is used for acquiring the change of the compression state of the elastic part (32) so as to monitor the touch state between the optical fiber (2) and the device to be coupled (1);

the control system (6) is used for controlling the adjusting mechanism (4) to move according to the contact state between the optical fiber (2) and the device to be coupled (1) so as to adjust the posture of the clamping mechanism (3), and the end face of the optical fiber (2) is parallel to the end face of the device to be coupled (1).

2. The automatic coupling device according to claim 1, characterized in that the gripping mechanism (3) further comprises a base (33), the sensor (34) is a displacement sensor (341), the displacement sensor (341) is arranged on the base (33), and the other end of the elastic member (32) is connected with the base (33);

the displacement sensor (341) is used for detecting displacement change of the sliding table (31) relative to the displacement sensor (341) so as to trigger the adjusting mechanism (4) to adjust the posture of the clamping mechanism (3);

wherein the change of the compression state of the elastic piece (32) is embodied as the displacement change of the sliding table (31) relative to the displacement sensor (341).

3. The automatic coupling device according to claim 1, characterized in that the gripping mechanism (3) further comprises a base (33), the sensor (34) is a pressure sensor (342), the pressure sensor (342) is arranged on the base (33), and the other end of the elastic member (32) is connected with the pressure sensor (342);

the pressure sensor (342) is used for detecting the elastic force change of the elastic piece (32) so as to trigger the adjusting mechanism (4) to adjust the posture of the clamping mechanism (3).

4. The automatic coupling device according to claim 2 or 3, characterized in that a guide rail (35) is arranged on the base (33), and the sliding table (31) is connected with the base (33) in a sliding manner through the guide rail (35);

be provided with spacing portion (351) on guide rail (35), spacing portion (351) with elastic component (32) set up respectively in the both sides that back on the back each other of slip table (31).

5. The automatic coupling device according to claim 2 or 3, characterized in that said clamping mechanism (3) further comprises a positioning assembly (36), said positioning assembly (36) being arranged on said base (33), said positioning assembly (36) being located on the same side of said slide (31) as said elastic member (32);

after the end face of the optical fiber (2) is parallel to the end face of the device to be coupled (1), the positioning assembly (36) abuts against the sliding table (31) so that the state of the elastic piece (32) is kept unchanged.

6. An automatic coupling method, characterized in that the automatic coupling method comprises:

adjusting the posture of the clamping mechanism through an adjusting mechanism, and detecting the compression state of an elastic part so as to enable the end face of the optical fiber to be parallel to the end face of the device to be coupled;

wherein, the adjusting mechanism adjusts the posture of the clamping mechanism and detects the compression state of the elastic part, so that the end face of the optical fiber is parallel to the end face of the device to be coupled, and the adjusting mechanism comprises:

7. The automatic coupling method according to claim 6, wherein the rotating the clamping mechanism, determining a target rotation angle depending on the compression state of the elastic member comprises:

8. The automatic coupling method according to claim 7, wherein the driving the clamping mechanism to rotate within a preset angle range by the first rotation adjusting assembly, and the determining a first target rotation angle corresponding to the first rotation adjusting assembly according to the compression state of the elastic member so that the end surface of the optical fiber is parallel to the end surface of the device to be coupled in the Y-axis direction comprises:

dividing the preset angle range into a plurality of rotation angles;