CN112091344A

CN112091344A - Tool for welding optical device flexible board and PCB

Info

Publication number: CN112091344A
Application number: CN202011018455.8A
Authority: CN
Inventors: 杨龙兵
Original assignee: Eoptolink Technology Inc ltd; EOPTOLINK TECHNOLOGY Inc
Current assignee: Eoptolink Technology Inc ltd; EOPTOLINK TECHNOLOGY Inc
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2020-12-18
Anticipated expiration: 2040-09-24
Also published as: CN112091344B

Abstract

The invention relates to the field of communication modules, in particular to a tool for welding a flexible board of an optical device and a PCB (printed Circuit Board), which comprises a bottom plate, a three-dimensional table, a cushion block, a device end clamping seat and a PCB end clamping seat. Only a small number of parts, such as a PCB end clamping seat, a PCB welding disc end cushion block, a device end clamping seat, a sliding block and a deformation pressing device, need to be selectively replaced according to the structure of an actual product, so that the BIDI optical device can be suitable for most BIDI optical devices, can also be used for positioning welding of single-emitting single-receiving optical devices, and is high in compatibility, universality and flexibility; the problems that optical devices are loose, PCBs are prone to warping, BIDI optical device soft boards cannot be welded compatibly and the like in the welding process are effectively solved, and the method is particularly suitable for welding the optical device soft boards needing shaping.

Description

Tool for welding optical device flexible board and PCB

Technical Field

The invention relates to the field of communication modules, in particular to a tool for welding an optical device flexible board and a PCB.

Background

The rapid construction of global communication greatly promotes the rapid development of the module communication industry, and good module performance also becomes the key to be established in the industry. The optical device soft board is a soft board of a model corresponding to an optical device packaged in the module communication industry, wherein the optical device and the soft board are in a connection state. On the optical communication module, an optical communication device and an optical module PCB are connected through a flexible printed circuit board (FPC), and the FPC has small volume and light weight and can be bent with a certain degree of freedom. The welding quality of the optical device soft board and the PCB also becomes a key factor for determining the performance of the module, and the research and design of the tool clamp for welding the optical device soft board and the PCBA have important significance for improving the welding quality of the optical module.

The existing tool for welding the optical device soft board and the PCB is messy, has no uniform form, basically mainly adopts manual welding, and has low welding efficiency. As shown in fig. 1, the existing welding tooling for the optical device flexible printed circuit board and the PCB mainly aims at a single-emitting single-receiving series optical communication module (including the ROSA optical device 100 and the TOSA optical device 200), the ROSA optical device 100 and the TOSA optical device 200 are respectively connected with the optical module PCB300 through the corresponding optical device flexible printed circuit board, and the optical device flexible printed circuit board does not need to be bent and shaped; the main hot-press welding mode is as follows: the PCB300 is fixed on a PCB clamping groove of the tool, the optical device to be welded is fixed in a single-emitting single-receiving device clamping groove of the tool, a hole is formed in a corresponding placing surface of the optical device soft board, and the optical device soft board is fixed through air suction to be welded and positioned.

The existing tool mainly has the following problems in the welding and positioning process: (1) the fixing mode of the optical device soft board is unreliable; (2) the device clamping groove is in clearance fit with the device, and the device is easy to loosen in the welding process, so that the welding quality of the soft board welding disc and the PCB welding disc is influenced; (3) the device clamping groove can only realize the welding of a single-transmitting and single-receiving device flexible board to the PCB, cannot realize the welding of a double-transmitting and double-receiving device flexible board and the PCB, and has poor compatibility, universality and flexibility; (4) the device soft board bonding pad and the PCB bonding pad are welded in a plane parallel attaching mode, and the soft board bonding pad is easy to tilt, so that the welding quality is influenced; (5) the PCB fixing mode is unreliable, and the PCB is often loosened in the clamping groove, so that the welding quality of the PCB and the soft board welding pad is influenced.

The transmitter and the receiver of the BIDI series optical communication module integrated signal are arranged in a single device, and are respectively connected with the TOSA optical device soft board and the ROSA optical device soft board; in the actual production process, just because the optical device soft board is flexible, yielding, and the optical device soft board in the BIDI optical communication module most needs the plastic of bending, consequently when welding the optical device soft board in the BIDI series optical communication module to the PCB board, the degree of difficulty is very big, and the frock that is used for optical device soft board and PCB welding at present is not applicable to the welding location of BIDI optical device soft board and PCB.

Disclosure of Invention

The invention aims to: aiming at the problem that the fixture for welding the optical device soft board and the PCB in the prior art is unreliable in device fixing and clamping, the fixture for welding the optical device soft board and the PCB is provided.

In order to achieve the purpose, the invention adopts the technical scheme that:

a tool for welding an optical device flexible board and a PCB comprises a bottom plate, a three-dimensional table, a cushion block, a device end clamping seat and a PCB end clamping seat;

the bottom plate is used for being fixed on the welding platform, so that the front, back, left and right adjustment of the tool can be realized, and the large adjustment of the tool plane in the XY axis direction can be realized; the three-dimensional table and the cushion block are detachably connected to the bottom plate;

the three-dimensional table can realize fine adjustment in the front, back, left, right and circumferential directions, the device end clamping seat is connected to the three-dimensional table, and the device end clamping seat is used for fixing an optical device; the cushion block is connected with the PCB end clamping seat, and the PCB end clamping seat is used for fixing a PCB; the device end clamping seat and the PCB end clamping seat are oppositely arranged and matched for use;

the device end clamping seat comprises a clamping seat body and a spiral pressing device, wherein a device clamping groove is formed in one end, close to the PCB end clamping seat, of the clamping seat body, and the device clamping groove is arranged vertically, horizontally or longitudinally according to different placement forms of optical devices and is used for clamping the optical devices and limiting the moving range of the optical devices; the spiral pressing device is used for pushing the optical device.

By adopting the tool for welding the optical device soft board and the PCB, the device end clamping seat and the PCB end clamping seat are replaced only by aiming at different types of optical devices and welding structural forms between the optical device soft board and the PCB corresponding to the optical devices; in the installation process, the front, the back, the left and the right (XY axes) of the tool are positioned by adjusting the position of the bottom plate, and the height (Z axis) of the tool is positioned by adjusting the number and the thickness of the cushion blocks; after the tooling is installed at one time, the PCB is fixed on the PCB end clamping seat, the optical device is limited in the device clamping groove, and then the optical device is pushed by the spiral pressing device to be clamped, so that the phenomenon that the optical device is loosened to influence the welding quality when the optical device soft board is in alignment welding with the PCB is avoided.

Preferably, the spiral pressing device comprises a spiral rod and a sliding block, a protruding block with a sliding groove is arranged on the clamping seat body, the sliding block is connected with the sliding groove in a sliding mode, and the spiral rod is used for pushing the sliding block to clamp the optical device.

Preferably, the PCB pressing device is arranged on the PCB end clamping seat, one end of the PCB pressing device is rotatably connected with the PCB end clamping seat, and the other end of the PCB pressing device is used for fixing the PCB. The PCB pressing device is used for pressing the PCB, and the PCB is prevented from loosening or tilting when the optical device soft board and the PCB are welded.

Preferably, the PCB pressing device comprises a rocking handle, a connecting screw and a spring, a groove is formed in the rotating end of the rocking handle, an unthreaded hole for the connecting screw to pass through is formed in the groove, and the connecting screw is sleeved in the spring; the diameter of the spring is larger than that of the unthreaded hole and smaller than that of the connecting screw end cover. When the connecting screw is screwed in until the spring is pressed, the two ends of the spring can be respectively abutted against the groove and the connecting screw end cover, and then the PCB pressing device is fixed in contact with the PCB to press the PCB. The magnitude of the compression pressure can be adjusted by screwing in and out the connecting screw; when the PCB is assembled and disassembled, only the rocking handle needs to be rotated.

Preferably, the device end clamping seat is provided with a deformation pressing device, and the deformation pressing device is used for fixing the pre-bent optical device soft board; the deformation pressing device comprises a soft plate pressing nail and a pressing nail base, the pressing nail base is fixed on the device end clamping base, one end of the soft plate pressing nail is hinged with the pressing nail base, and the other end of the soft plate pressing nail is used for contacting with the optical device soft plate; when the soft board pressing nail is correspondingly contacted with the optical device soft board, the soft board pressing nail is also connected with the device end clamping seat in a magnetic absorption mode. When the optical device is vertically clamped or longitudinally clamped and the optical device soft board needs to be bent and deformed, the deformation pressing device is arranged on the device end clamping seat, so that the rebound of the pre-bent optical device soft board can be avoided, and the optical device soft board is stably bent, deformed and welded.

Preferably, the base plate comprises a first base plate and a second base plate; the first bottom plate is provided with at least two first long waist holes for fixing the welding platform, and the length direction of each first long waist hole is transversely arranged and used for realizing large displacement adjustment of the tool in the left-right (X-axis) direction; the second bottom plate is also provided with at least two second long waist holes for fixing the first bottom plate, and the length direction of each second long waist hole is longitudinally arranged and used for realizing the displacement major adjustment of the tool in the front-back (Y-axis) direction.

Preferably, the cushion blocks comprise a plurality of cushion blocks, each cushion block is provided with at least two third long waist holes used for being connected with the bottom plate, and the length direction of each third long waist hole is arranged along the longitudinal direction; at least two fourth long waist holes used for being connected with the cushion block are correspondingly arranged on the PCB end clamping seat, and the length direction of each fourth long waist hole is transversely arranged. After the bottom plate is installed, the front and rear displacement can be further adjusted through a third long waist hole on the cushion block, and the left and right displacement can be adjusted through a fourth long waist hole on the PCB end clamping seat; in addition, the cushion block can be used in a plurality of superposed connections and has the function of height adjustment.

Preferably, the periphery of the PCB end clamping seat is provided with 4 first threaded holes, the first threaded holes are connected with first set screws, and the first set screws are used for finely adjusting the height of the PCB end clamping seat and have the functions of leveling and supporting.

Preferably, a disc cushion block is detachably connected between the device end clamping seat and the three-dimensional table; at least two fifth long waist holes used for being connected with the disc cushion block are arranged on the device end clamping seat, and the length direction of each fifth long waist hole is arranged along the longitudinal direction. The fifth long waist hole longitudinally arranged on the device end clamping seat is used for the front and back adjustment of the device end clamping seat and is adaptive to the fourth long waist hole transversely arranged on the PCB end clamping seat, and the flexibility is high.

Preferably, 4 second threaded holes are formed in the periphery of the device end clamping seat and connected with second set screws, and the second set screws are used for finely adjusting the height of the device end clamping seat and have leveling and supporting functions.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. in the welding positioning, the optical device is clamped by adopting a spiral pressing device, the PCB is pressed by adopting a PCB pressing device, and the optical device soft board is pressed by adopting a deformation pressing device when the BIDI optical device soft board needs to be deformed; according to the BIDI optical device soft board welding method, the device end clamping seat and the PCB end clamping seat are replaced according to the BIDI optical devices of different types and corresponding welding forms thereof, different clamping modes are selected, compatibility, universality and flexibility are high, the applicability to the BIDI series optical device soft board welding is good, and the method is particularly suitable for the optical device soft board welding needing shaping.

2. In the positioning and mounting process, the left and right displacement large adjustment can be realized through a first long waist hole on the first bottom plate, the front and back displacement large adjustment can be realized through a second long waist hole on the second bottom plate, and the height large adjustment can be realized through the cushion block; furthermore, fine adjustment of the front, back, left and right sides and the circumference of the device end clamping seat can be realized through the three-dimensional platform, positioning and checking of the front, back, left and right sides can be realized through a fifth long waist hole on the device end clamping seat and a fourth long waist hole on the PCB end clamping seat, and fine adjustment of the height can be realized through the first set screw/the second set screw; the invention can adjust each module in multiple layers to weld the optical device soft board and PCB, with high flexibility and avoiding repeated operation.

Drawings

Fig. 1 is a schematic structural diagram of a conventional single-transmitting single-receiving optical communication module.

In FIG. 1, the labels: 100-a ROSA optical device; 200-TOSA optics; 300-PCB.

Fig. 2 is a schematic view of the mounting state of the soldering tool for soldering and positioning the optical device flexible printed circuit board and the PCB in embodiment 1.

Fig. 3 is an exploded view of the mounting structure of fig. 2.

Fig. 4 is a schematic structural view of the a-type optical device ROSA terminal flexible board in example 1 at the time of soldering.

Fig. 5 is a schematic view of an installation state of the a-type optical device in vertical clamping in embodiment 1.

Fig. 6 is a schematic structural diagram of a PCB end cartridge body.

Fig. 7 is a structural diagram of a PCB end socket.

Fig. 8 is a schematic structural view of the PCB pressing apparatus.

Fig. 9 is a schematic structural diagram of the device end clamping base when the optical device is vertically clamped.

Fig. 10 is a schematic structural view of a screw compressing device.

Fig. 11 is a schematic structural view of the deforming press device.

Fig. 12 is a schematic view of the mounting state of the soldering tool for soldering and positioning the optical device flexible printed circuit board and the PCB in embodiment 2.

Fig. 13 is an exploded view of the mounting structure of fig. 12.

Fig. 14 is a schematic structural view of the type B optical device ROSA in example 2 at the time of solder joint of the end flexible boards.

Fig. 15 is a schematic view of the mounting state of the B-type optical device in the lateral mounting in embodiment 2.

Fig. 16 is a schematic structural diagram of the device end socket when the optical device is laterally clamped.

Fig. 17 is a schematic view of the mounting state of the soldering tool for soldering and positioning the optical device flexible printed circuit board and the PCB in embodiment 3.

Fig. 18 is an exploded view of the mounting structure of fig. 17.

Fig. 19 is a schematic structural view of the C-type optical device ROSA in embodiment 3 when flexible circuit boards are soldered.

Fig. 20 is a schematic view of the mounting state of the C-type optical device in the longitudinal clamping in embodiment 3.

Fig. 21 is a schematic structural diagram of the device end socket when the optical device is longitudinally clamped.

Fig. 22 is a schematic view showing a mounted state of the device-end cartridge.

Labeled in fig. 2-22: 1-PCB end card seat; 2-a spring; 3-PCB pad end cushion block; 4-countersunk head screw; 5-PCB; 6-connecting screws; 7-set screws; 8-a connection screw; 9-pins; 10-a nail pressing base; 11-soft board pressing nail; 12-a screw rod; 13-a sealing block; 14-countersunk head screws; 15-a slide block; 16-a magnet; 17-device end card seat; 18-a three-dimensional table; 19-disc spacer block; 20-a first base plate; 21-a second bottom plate; 22-cushion block; 23-a rocking handle; 24-countersunk head screws; 25-an optical device; 26-TOSA end soft board; 27-ROSA end soft board; 28-connecting screws; 29-a bump; 30-device card slot.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

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.

Example 1

A welding tool for a flexible board and a PCB of an optical device, as shown in figures 2-11, comprises a bottom plate, a three-dimensional table 18, a cushion block 22, a device end clamping seat 17 and a PCB end clamping seat 1. The welding tool is used for clamping an A-type optical device 25 and welding a corresponding optical device soft board on a corresponding PCB5, wherein the A-type optical device soft board comprises a corresponding TOSA end soft board 26 and a ROSA end soft board 27.

As shown in fig. 5-7, the PCB end socket 1 is mainly used to clamp the tail of the PCB5 and is used in cooperation with the device end socket 17. After the PCB5 is mounted, the optical device 25 on the PCB5 is in a suspended state and does not interfere with the PCB end socket 1, and the external structure shape, size and thickness of the PCB end socket 1 are designed according to actual requirements. Specifically, as shown in fig. 6, the PCB end card socket 1 is provided with three-stage stepped grooves, wherein the upper groove serves as a card slot matched with the shape and size of the tail of the PCB5 to play a role in fixing and limiting; the middle groove is convenient for manually placing and taking out the PCB 5; as shown in fig. 7, the lower groove and the countersunk head screw 4 are fitted into the PCB pad end pad 3, and the PCB pad end pad 3 is adapted to the contour shape of the PCB5, and can support the PCB5 and perform a lateral limiting function. Because the temperature is high during the hot-press welding, in order to guarantee the welding quality, the PCB pad end pad 3 is made of materials with high strength, good heat preservation effect, high temperature resistance and wear resistance, such as bakelite, synthetic stone and the like, and can play a role in absorbing heat and preserving heat.

As shown in fig. 5 and 7, the PCB pressing device is further disposed on the PCB end socket 1, and the PCB pressing device is rotatably connected to the PCB end socket 1 for pressing the tail end of the PCB5, so as to prevent the PCB5 from loosening or tilting. Specifically, as shown in fig. 8, the PCB pressing device includes a rocking handle 23, a connecting screw 6 and a spring 2, wherein the rocking handle 23 includes a rotating portion, a connecting portion and a pressing portion, the pressing portion is used for contacting with a pad at the tail of the PCB5, the connecting portion connects the pressing portion and the rotating portion, the rotating portion is provided with a groove, and a light hole for the connecting screw 6 to pass through is formed in the groove; the diameter of the spring 2 is larger than that of the unthreaded hole and smaller than that of the end cover of the connecting screw 6, the spring 2 is sleeved on a screw rod of the connecting screw 6 and is respectively abutted against the rotating part and the end cover of the connecting screw 6, and the size and the length of the spring 2 are selected according to actual needs. Correspondingly, the PCB end clamping seat 1 is provided with a threaded hole matched with the connecting screw 6. When the connecting screw 6 is rotated downwards until the spring 2 is compressed by force, the PCB pressing device clamps the tail part of the PCB 5; the magnitude of the compression pressure is realized by adjusting the connecting screw 6, and the position of the connecting screw 6 is adjusted only once; due to the elastic force of the spring 2, the operator can load and unload the PCB by lifting the rocking handle 23 and turning.

As shown in fig. 3 and 6, the PCB end clamping base 1 is provided with two long waist holes arranged along the transverse direction for fixing the PCB end clamping base 1 and facilitating the transverse adjustment, 4 threaded holes are further arranged around the PCB end clamping base, and set screws 7 are arranged in the threaded holes for fine adjustment of the height of the PCB end clamping base 1 until the end surface leveling of the PCB end clamping base 1 meets the welding requirement; when the PCB end clamping seat 1 is heightened, the set screw 7 is abutted with the cushion block 22.

The cushion block 22 is arranged below the PCB end clamping seat 1, the cushion block 22 can be repeatedly overlapped and connected for use according to the height condition of welding adjustment, the height of the PCB end clamping seat 1 is adjusted greatly, and the thickness of the cushion block 22 is designed according to actual needs. The cushion blocks 22 are respectively connected with the bottom plate and the PCB end clamping seat 1. Two long waist holes corresponding to the threaded holes on the base are arranged in the middle of each cushion block 22, and 4 threaded holes corresponding to the long waist holes on the PCB end clamping seat 1 are arranged on the periphery of each cushion block. The adjacent cushion blocks 22 are connected through the threaded holes on the periphery by connecting screws 28.

The bottom plate is located the cushion 22 bottom for fix welding fixture on the hot press welder welded platform, the bottom plate includes first bottom plate 20 and second bottom plate 21. The first base plate 20 is a key medium for connecting the hot-press welder with the tool, and the size, the number and the layout of the threaded holes on the first base plate 20 and the length, the size and the number of the waist holes are determined according to a hot-press welding platform; specifically, three long waist holes are formed in the first base plate 20, the length direction of the long waist holes is along the transverse direction, so that the left and right large adjustment of the tool is realized, and the first base plate 20 is fixed with the hot-press welding platform through a connecting screw 28. The second bottom plate 21 is a direct supporting platform for connecting the three-dimensional table 18 and the cushion block 22, the second bottom plate 21 is fixed on the first bottom plate 20 through a connecting screw 28, and the second bottom plate 21 is provided with three long waist holes along the longitudinal direction for realizing the major adjustment of the front and rear directions of the tool.

Further, the device end card seat 17 used in cooperation with the PCB end card seat 1 is used for fixing the optical device 25 with a flexible board, and the optical device flexible board is welded with the PCB5 after being bent and shaped. Referring to fig. 9-11, the external structure of the device terminal holder 17 is designed according to the actual requirement, such as shape, size and thickness. The device end clamping seat 17 comprises a clamping seat body, a convex block 29 with a sliding groove, a spiral pressing device and a deformation pressing device. As shown in fig. 3 and 9, long waist holes are formed in two sides of the card seat body, the length direction of the long waist holes is arranged along the longitudinal direction, and the card seat body is connected with the three-dimensional table 18 through a connecting screw 28; one end of the clamping seat body, which is close to the PCB end clamping seat 1, is provided with a through hole with a circular cross section as a device clamping groove 30, the device clamping groove 30 is used for vertically clamping an A-type optical device 25, and the optical device 25 is clamped on the device end clamping seat 17 to limit the moving range of the optical device 25. In order to further limit and fix the optical device 25, the projection 29 with the sliding groove is matched with the spiral pressing device to realize the pressing and releasing of the optical device 25, wherein the projection 29 and the card seat body can be integrally formed or detachably connected, the projection 29 has a certain inclination and is L-shaped, and the length direction of the sliding groove structure in the projection 29 is along the longitudinal direction, namely is right opposite to the PCB end card seat 1.

As shown in fig. 10, the screw pressing device includes a screw rod 12, a sealing block 13, a countersunk screw 14 and a slider 15. The screw rod 12 is detachably connected with the sliding block 15, the sliding block 15 is installed in a sliding groove of the L-shaped protruding block 29 in an adaptive mode, the screw rod 12 longitudinally penetrates through the L-shaped protruding block 29 and is used for pushing the sliding block 15 to clamp an optical device, the screw rod 12 is in threaded connection with the protruding block 29, and the protruding block 29 not only provides support for the screw rod 12, but also is used for limiting sliding of the sliding block 15. Specifically, the middle part of the screw 12 has threads, the tail part is an optical axis with a boss, and the diameter (including the diameter of the boss) of the screw 12 at the tail part is smaller than that of the screw at the middle part; the slider 15 is equipped with the seal piece 13 in the one end towards the hob 12, and slider 15 passes through countersunk screw 14 with seal piece 13 and is connected, is equipped with the space that is used for holding 12 afterbody bosss of hob between slider 15 and the seal piece 13, and the hob 12 afterbody passes seal piece 13 and slider 15 relatively fixed. When the screw rod 12 is rotated to push the sliding block 15, the sliding block 15 can move along the sliding groove under the pushing of the screw rod 12 until the sliding block is contacted with the surface of the optical device 25, and the optical device 25 is abutted and clamped with the edge wall of the device end clamping seat 17, so that the effect of fixing and pressing the optical device 25 is achieved; on the contrary, the screw rod 12 drives the slider 15 to return, so that the optical device 25 can be conveniently taken out. The contact surface of the sliding block 15 and the device is correspondingly changed along with the shape and size of the device so as to meet the clamping requirement, and soft glue is adhered to the contact surface of the sliding block 15 and the device so as to protect the device shell.

As shown in fig. 11, the deformation pressing device comprises a soft board pressing nail 11 and a pressing nail base 10, the pressing nail base 10 is connected with a device end clamping seat 17 through a countersunk screw 24 to provide a supporting platform for the soft board pressing nail 11, one end of the soft board pressing nail 11 is hinged with the pressing nail base 10 through a pin 9, and the other end of the soft board pressing nail 11 can be in contact with and clamped by a pre-bent soft board by rotating the soft board pressing nail 11 to play a role in bending and shaping; the contact surface of the soft board pressing nail 11 and the soft board is an inclined surface with the same inclination as the bump 29, so that the bonding pad on the soft board is in close contact with the bonding pad on the PCB, and the welding quality is favorably ensured. Because the soft board is flexible material, has certain elasticity, for avoiding soft board bounce-back after bending in advance to influence welding quality, set up the magnet pilot hole on corresponding position on device end cassette 17 to set up magnet 16 in the magnet pilot hole, magnet 16 and magnet pilot hole interference fit utilize magnet 16 to press nail 11 to produce sufficient suction to realize the plastic to the soft board, wherein, soft board is pressed nail 11 and is stainless steel material. When the soft board is bent and shaped, the soft board pressing nail 11 is adhered with soft glue on the contact surface of the soft board, so that the effect of protecting the soft board can be achieved.

A three-dimensional table 18 is arranged below the device end clamping seat 17, and the three-dimensional table 18 and the second bottom plate 21 are fixed through a connecting screw 28. The three-dimensional table 18 is a conventional universal device and mainly comprises a disc and a three-dimensional table base, wherein the three-dimensional table base can be used for fine adjustment in the front, back, left and right directions, and the disc mainly is used for fine adjustment of circumferential steering. The three-dimensional stage 18 is a key part for fine adjustment of the device-end cartridge 17. Considering that the device end clamping seat 17 is frequently required to be disassembled and assembled on the three-dimensional table 18 in the field of communication modules, and the smooth thread of the connecting thread opening on the upper surface of the three-dimensional table 18 is easily caused, therefore, the welding tool is provided with the disc cushion block 19 on the three-dimensional table 18, the disc cushion block 19 is connected with the three-dimensional table 18 through the connecting screw 8, and the device end clamping seat 17 is fixed on the disc cushion block 19, so that the effect of protecting the disc of the three-dimensional table is achieved.

Example 2

The present embodiment provides a soldering tool for an optical device flexible printed circuit board and a PCB, as shown in fig. 12 to 16, which is used for laterally clamping a B-type optical device 25 and soldering a corresponding optical device flexible printed circuit board to a corresponding PCB5, wherein the B-type optical device flexible printed circuit board also includes a corresponding TOSA end flexible printed circuit board 26 and ROSA end flexible printed circuit board 27. When the B-type optical device flexible board does not need to be shaped, the shaping structure is as shown in fig. 14, and the main difference between this embodiment and embodiment 1 in the structure of the welding tool and the welding process is as follows:

the B-type optical device 25 is clamped in the device end clamping seat 17 in a transverse clamping mode; and correspondingly, in order to protect the flexible printed circuit board, grooving processing is carried out on the flexible printed circuit board interference area on the PCB end clamping seat 1. Because the soft board of the B-type optical device does not need to be shaped when being welded, soft board shaping devices such as a soft board pressing nail 11 and the like are not designed; the basic composition of the rest parts is consistent with that of the welding tool for the A-type optical device soft board and the PCB.

Example 3

The present embodiment provides a soldering tool for an optical device flexible printed circuit board and a PCB, as shown in fig. 17-22, which is used for longitudinally clamping a C-type optical device 25 and soldering the corresponding optical device flexible printed circuit board to a corresponding PCB5, wherein the C-type optical device flexible printed circuit board also includes a corresponding TOSA end flexible printed circuit board 26 and ROSA end flexible printed circuit board 27. When a C-type optical device flexible board is welded, the shaping structure is as shown in fig. 19, and the main difference between this embodiment and embodiment 1 in the structure of the welding tool and the welding process is as follows:

the C-shaped optical device 25 is clamped in the device end clamping seat 17 in a longitudinal clamping mode; and correspondingly adjusting the contact surface of the sliding block 15 and the device to meet the clamping and fixing requirements. The soft plate 27 at the ROSA end of the C-type device welded by the tool in a hot-pressing mode is similar to the soft plate 27 at the ROSA end of the A-type device, and needs to be shaped, but the shaping modes are different; the basic composition of the rest parts is consistent with that of the welding tool for the A, B type optical device soft board.

In the above embodiments 1 to 3, the A, B, C-type optical device 25 is a BIDI-series optical device 25 having different shaping forms but substantially the same shape, and is suitable for different clamping manners. The structure size of the PCB end card seat 1 changes along with the change of the size, the shape, the clamping position and the placing mode of the PCB5 corresponding to the A, B, C type optical device soft board; the shape, size and position of the PCB pad end pad 3 can be adjusted along with the adjustment of the size, shape, position and placement of the PCB 5. In order to better fix and clamp the optical device 25, the direct contact surface of the sliding block 15 and the optical device 25 is changed along with the change of the appearance of the device shell; the device card slot 30 of the device end card seat 17 is correspondingly adjusted along with the change of the size, shape and clamping mode of the device. The length, the slope of the slope and the height of the slope of the soft board pressing nail 11 are correspondingly adjusted according to the slope of the shaping slope of the soft board of the device end clamping seat 17 and the shaping shape of the soft board; the thickness of the first layer of parallel steps of the device end clamping seat 17 can be increased or decreased according to actual needs, and the inclination of the second layer of steps can be adjusted according to actual needs.

In general, based on the provisions of industry standards: the size, shape, height and position clamping of the PCB5 with the same speed or similar speed or even different speeds are the same, so the PCB end clamping seat 1 can be matched with a large number of soft boards of different types for hot-press welding, and the universality of the PCB end clamping seat 1 is strong. Above-mentioned welding frock only needs to change a small amount of spare parts according to actual product structure selectivity, like PCB end cassette 1, PCB pad end backing block 3, device end cassette 17, slider 15, warp closing device, can be suitable for most BIDI optical device 25, also can be used for the positioning welding of single sending out single receiving optical device, and compatibility, commonality, flexibility are high.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A tool for welding an optical device flexible Printed Circuit Board (PCB) and a PCB is characterized by comprising a bottom plate, a three-dimensional table (18), a cushion block (22), a device end clamping seat (17) and a PCB end clamping seat (1);

the bottom plate is used for being fixed on the welding platform and can be adjusted front, back, left and right; the three-dimensional table (18) and the cushion block (22) are detachably connected to the bottom plate;

the three-dimensional table (18) can be adjusted in the front, back, left and right directions and the circumferential direction, the device end clamping seat (17) is connected to the three-dimensional table (18), and the device end clamping seat (17) is used for fixing an optical device (25); the PCB end clamping seat (1) is connected to the cushion block (22), and the PCB end clamping seat (1) is used for fixing a PCB (5); the device end clamping seat (17) and the PCB end clamping seat (1) are oppositely arranged and matched for use;

the device end clamping seat (17) comprises a clamping seat body and a spiral pressing device, a device clamping groove (30) is formed in one end, close to the PCB end clamping seat (1), of the clamping seat body, and the device clamping groove (30) is used for clamping the optical device (25); the spiral pressing device is used for pushing the optical device (25).

2. The tooling for welding the optical device flexible printed circuit board and the PCB according to claim 1, wherein the spiral pressing device comprises a spiral rod (12) and a sliding block (15), the cassette body is provided with a projection (29) with a sliding slot, the sliding block (15) is connected with the sliding slot in a sliding manner, and the spiral rod (12) is used for pushing the sliding block (15) to clamp the optical device (25).

3. The tooling for welding the optical device flexible printed circuit board and the PCB according to claim 1, wherein a PCB pressing device is arranged on the PCB end clamping seat (1), one end of the PCB pressing device is rotatably connected with the PCB end clamping seat (1), and the other end of the PCB pressing device is used for fixing the PCB (5).

4. The tooling for welding the optical device soft board and the PCB according to claim 3, wherein the PCB pressing device comprises a rocking handle (23), a connecting screw (6) and a spring (2), a groove is formed in the rotating end of the rocking handle (23), an unthreaded hole for the connecting screw (6) to pass through is formed in the groove, and the connecting screw (6) is sleeved in the spring (2); the diameter of the spring (2) is larger than that of the unthreaded hole and smaller than that of the end cover of the connecting screw (6).

5. The tool for welding the optical device flexible printed circuit board and the PCB as claimed in claim 1, wherein a deformation pressing device is arranged on the device end clamping seat (17), and the deformation pressing device is used for fixing the pre-bent optical device flexible printed circuit board; the deformation pressing device comprises a soft board pressing nail (11) and a pressing nail base (10), the pressing nail base (10) is fixed on the device end clamping seat (17), one end of the soft board pressing nail (11) is hinged with the pressing nail base (10), and the other end of the soft board pressing nail (11) is used for contacting with the optical device soft board; when the soft board pressing nail (11) is correspondingly contacted with the optical device soft board, the soft board pressing nail (11) is also connected with the device end clamping seat (17) in a magnetic absorption way.

6. The tooling for soldering the optical device flexible printed circuit board and the PCB according to claim 1, wherein the base plate comprises a first base plate (20) and a second base plate (21); the first bottom plate (20) is provided with at least two first long waist holes for fixing the welding platform, and the length direction of each first long waist hole is arranged along the transverse direction; the second bottom plate (21) is further provided with at least two second long waist holes for fixing the first bottom plate (20), and the length direction of each second long waist hole is arranged along the longitudinal direction.

7. The tooling for welding the optical device soft board and the PCB as claimed in claim 1, wherein the cushion block (22) comprises a plurality of cushion blocks, each cushion block (22) is provided with at least two third long waist holes for connecting with the bottom board, and the length direction of each third long waist hole is arranged along the longitudinal direction; at least two fourth long waist holes used for being connected with the cushion block (22) are correspondingly arranged on the PCB end clamping seat (1), and the length direction of each fourth long waist hole is transversely arranged.

8. The tooling for welding the optical device flexible printed circuit board and the PCB according to claim 7, wherein 4 first threaded holes are formed in the periphery of the PCB end clamping seat (1), the first threaded holes are connected with first set screws, and the first set screws are used for adjusting the height of the PCB end clamping seat (1).

9. The tooling for welding the optical device flexible printed circuit board and the PCB according to any one of claims 1 to 8, wherein a disc cushion block (19) is detachably connected between the device end clamping seat (17) and the three-dimensional table (18); at least two fifth long waist holes used for being connected with the disc cushion block (19) are formed in the device end clamping seat (17), and the length direction of each fifth long waist hole is arranged along the longitudinal direction.

10. The tooling for welding the optical device flexible printed circuit board and the PCB according to claim 9, wherein 4 second threaded holes are formed in the periphery of the device end clamping seat (17), the second threaded holes are connected with second set screws, and the second set screws are used for adjusting the height of the device end clamping seat (17).