CN215468680U

CN215468680U - Welding fixture for connecting optical device and double flexible boards

Info

Publication number: CN215468680U
Application number: CN202121963347.8U
Authority: CN
Inventors: 郭凡
Original assignee: Trixon Communication Technology Corp ltd
Current assignee: Trixon Communication Technology Corp ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-11
Anticipated expiration: 2031-08-20

Abstract

The welding fixture for connecting the optical device and the double flexible boards is simple and convenient in welding operation and high in finished product qualification rate. The utility model is realized by the following technical scheme: the T-shaped handle is hinged to the rocker bracket on the tail edge of the base step platform through an H-shaped rocker arm of a fixed end crank hinge and a rocker bracket hinged to the tail edge of the base step platform, and a bait fork tail of the H-shaped rocker arm is utilized to connect the portal guide plate; the free end pressing plates of the left and right Z-shaped bending pressing plates are connected with an FPC (flexible printed Circuit) and PCB (printed Circuit Board) combination body, and the BIDI optical devices are clamped on the Z-shaped steps respectively; the H-shaped crank link mechanism is linked with the portal guide plate to drive the two Z-shaped bending pressing plates to move, the BIDI optical device is pressed down, the FPC and PCB combination is attached, the cylindrical surface recessed at the front end of the optical device is clamped, the up-down moving freedom degree of the optical device is limited, the array bonding pad on the optical device is combined, and the FPC soft board, the PCB combination and the BIDI optical device are welded together.

Description

Welding fixture for connecting optical device and double flexible boards

Technical Field

The utility model relates to the technical field of welding tools, in particular to a welding positioning tool fixture capable of effectively fixing and attaching a welding gap between a pin surface and a soft board surface of an optical communication device.

Background

In the circuit board soft of various electronic products, the hard combination is that a flexible circuit board and a hard circuit board are combined together according to relevant process requirements through procedures such as pressing and the like. A12 mil bonding pad with 5mil through holes in the pad and a 3mil flexible circuit with lines and spaces can be manufactured on a thin film, and the flexible circuit is a printed circuit FPC with the characteristics of free bending, folding, winding, small volume, thinning, random movement, stretching and the like. Conventional rigid-flex boards are constructed by selectively laminating rigid and flexible substrates together in a compact configuration with metallized holes to form conductive connections. In the past, a printed circuit board and an optical device were connected by soldering using a lead of the optical device as it is. Because the pins need to be left with a proper length on the printed PCB, the method occupies the space of the printed circuit board, is not beneficial to the arrangement of devices under the condition of limited PCB size, influences the heat dissipation performance and increases the invalid PCB arrangement design difficulty. Meanwhile, the pins need to be shaped after being cut to a proper length, so that the bent angle of the pins can be attached to the printed PCB. In addition, the pin welding mode is troublesome and labor-consuming, and the productivity and the qualified rate of finished products are influenced. To sum up, in the field of circuit board design and manufacture, the development direction of circuit boards has been developed by using a Flexible Printed Circuit (FPC) as a medium for optical devices and printed circuit boards to perform welding, and in the development of optical modules, the speed of the optical module is continuously improved, and meanwhile, the transmission distance is gradually increased: the market demand for 10km, 5km, 80km, 120km, 180km … … BIDI optical module products (single port) is very large. According to the conventional module, it is difficult for two optical fibers, which are required to input and output optical signals, to correspond to two sockets of the optical module. With the development of technology, only one optical fiber is required to complete input and output signals. Namely, two Flexible Printed Circuits (FPCs) are welded on one optical device and then welded on a Printed Circuit Board (PCB). Thus, the optical device is both input and output, and only one optical fiber needs to be connected. One optical fiber is reduced, and the cost investment can be greatly reduced when the mass demand and the long-distance transmission are carried out.

To accommodate the soldering of two connection boards to a PCB for an optical device, four types of flexible boards, multilayer flexible boards/single-sided and double-sided flexible circuits, are now commonly used for soldering. In the welding process, the rigid-flexible board is spliced together. The elements are placed and welded on the hard board part, the elements need to be welded on the flexible board part, and the soft-hard combined board manufactured by the existing technology needs to be protected by blue gel when an outer layer circuit is arranged, or hard area auxiliary materials are filled, so that the board surface tends to be flat as much as possible. But the production and manufacturing mode has complex steps and cannot ensure the product quality. The optical device is connected with the PCB board by the FPC flexible circuit board in a welding way, so that the circuit board and the optical device are assembled. The welded finished product has better torsion resistance, more stable structure and difficult falling of welding spots.

In order to facilitate the welding of the optical device and the two flexible plates, a welding fixture is needed to enable the optical device and the two flexible plates to be close to each other, so that the good transmission efficiency is guaranteed, and meanwhile, an operator can weld conveniently. In the process of assembling the printed circuit board PCB, high requirements are generally required for the installation of electronic components. When the manual installation is carried out, one component is needed to be welded and installed, the speed is low, the requirements of a production line are difficult to meet, the accuracy of the assembly height and the accuracy of the angle cannot be effectively controlled, and the quality is difficult to guarantee. When a Printed Circuit Board (PCB) is welded, the PCB is generally placed on a workbench to be directly welded, so that the PCB is easy to displace, and the welding position of elements is easy to deviate.

When the existing single-optical device and double-flexible-board welding tool is used for welding and positioning, the double-flexible-board welding tool has the following defects: the clamp has heavy weight, the optical device is not stably placed, and the manufacturing tolerance of the optical device cannot be compatible; the optical device is not tightly attached to the soft board, the soft board is not tightly attached to the optical device, welding operation is inconvenient, operation steps are complex, and the yield of a welded finished product is low; maintenance and replacement work of the equipment and the like. The production efficiency, the product quality and the input cost are greatly influenced, and the subsequent maintenance cost and the staff cost are greatly consumed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the welding fixture for the single optical device and the double flexible boards, which has the advantages of lower cost, simpler and more convenient operation, compatibility with the optical device, more convenient welding operation and higher qualification rate of finished products.

In order to achieve the purpose, the utility model provides the following technical scheme: a welding fixture for connecting an optical device with a double flexible board comprises: articulate T type handle 1 on 7 backs of the bases, with the portal baffle 2 of 1 linkages of T type handle, its characterized in that: the T-shaped handle 1 is hinged to the portal guide plate 2 through an H-shaped rocker arm of a fixed end crank hinge and a rocker bracket hinged to the tail edge of the step platform of the base 7 by utilizing a bait fork tail of the H-shaped rocker arm; the portal guide plate 2 is fixed on a base 7 boss through a U-shaped hollow bearing column 11 below a double-fork lug arm end, a Z-shaped bending pressing plate 3 extending downwards along a boss step surface is fixedly connected onto the double-fork lug support arm, a free end pressing plate of the left Z-shaped bending pressing plate 3 is connected with a second FPC and PCB combination 9, a buffer sleeve 10 arranged below the double-fork lug support arm is locked through a bolt, a BIDI optical device 4 longitudinally inserted into a cantilever slot of the base 7 is clamped on an optical port lifting block 8 of a Z-shaped step manufactured with a ㄱ -shaped platform, a free end pressing plate of the right Z-shaped bending pressing plate 3 is connected with a first FPC and PCB combination 5, and the other BIDI optical device 4 vertical to the boss step surface of the base 7 is clamped on an elastic support body 6 fixedly connected onto the Z-shaped step platform; the T-shaped handle 1 is used for driving the two Z-shaped bending pressing plates 3 to rotate by means of breaking the moment with hands, the H-shaped crank link mechanism is used for linking the portal guide plate 2, the BIDI optical device 4 and the FPC and PCB combination are pressed down to be attached to each other, the concave cylindrical surface at the front end of the optical device is clamped, the up-and-down freedom degree of the optical device is limited, an array bonding pad on the optical device is combined, and the BIDI optical device 4 and the FPC and PCB combination are welded together.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the T-shaped handle 1 hinged on the back end of the base 7 and the portal guide plate 2 linked with the T-shaped handle 1 are adopted, and the hinged T-shaped handle 1 can be connected in a manner that the portal guide plate 2 can be easily pushed to rotate upwards around the pin shaft under the action of torque, and can be pulled back in the opposite direction during installation and positioning, so that the operation is simpler and more convenient, the structure is labor-saving and convenient, and the working efficiency of an operator is greatly improved.

According to the utility model, the gantry guide plate 2 is fixed on a boss of the base 7 through the H-shaped rocker arm 11 below the end of the double-fork lug arm, and the double-fork lug arm is fixedly connected with the Z-shaped bent pressing plate 3 extending downwards along the step surface of the boss, so that the head of an optical device can be placed in the Z-shaped bent pressing plate. The free end pressing plate of the Z-shaped bending pressing plate 3 is locked with the buffer sleeve 10 through the bolt, the Z-shaped bending pressing plate 3 is longitudinally inserted into a BIDI optical device 4 in a cantilever slot of the base 7, the clamp is arranged on an optical port lifting block 8 of an ㄱ -shaped platform formed on a Z-shaped step, the optical port lifting block 8 connected with the base 7 in a plug pin mode can be separated through a ring cross beam on the middle and lifted and limit the optical device, and the structure is stable and reliable due to the fact that no upward force exists. The light opening lifting block 8 can move downwards for a small distance under the action of downward pressure and upward elasticity, and is compatible with the height difference of the optical device caused by manufacturing errors of the optical device, so that the welding operation is more convenient. For the optical device with insignificant length difference, the upper and lower heights of the elastic supporting body 6 can be adjusted by adjusting the lower screw, so that the pressing force of the optical device and the soft board assembly is proper, even the Z-shaped bent pressing plate 3 can be replaced, and the height of the front insertion structure is changed to achieve the same result.

The utility model adopts the buffer sleeve 10 on the free end pressing plate of the Z-shaped bending pressing plate 3, a BIDI optical device 4 longitudinally inserted into a cantilever slot of a base 7 is clamped on an optical port lifting block 8 of a Z-shaped step with an ㄱ -shaped platform through a locking bolt, the other BIDI optical device 4 is vertical to the step surface of a boss of the base 7 and is clamped on an elastic supporting body 6 fixedly connected with the Z-shaped step L-shaped platform, the structure clamps a cylindrical part recessed in the front end of the optical device by virtue of a left bending pressing sheet, presses down a flexible plate and an optical device assembly, enables the BIDI optical device and the flexible plate to be attached, cannot swing back and forth and left and right, can limit the up-and-down moving freedom degree of the BIDI optical device at the same time, can well press the plane where the optical device and the flexible plate are overlapped, can avoid 4-5 welding spots of the optical device, and is convenient to operate and weld. The defects that in the prior art, an optical device is not tightly attached to a soft board, the soft board is not tightly attached to the optical device, welding operation is inconvenient, operation steps are complex, and the yield of a welded finished product is low are overcome.

According to the utility model, a T-shaped handle 1 is adopted to drive a portal guide plate 2 to be linked by an H-shaped crank link mechanism by means of an arm-break moment, two Z-shaped bending press plates 3 are driven to rotate to press a BIDI optical device 4 down to be attached to the BIDI optical device 4, a concave cylindrical part at the front end of the optical device is clamped, the up-and-down freedom degree of the optical device is limited, and a soft FPC (flexible printed circuit) and a hard PCB (printed circuit board) of the BIDI optical device 4 are welded together by combining an array bonding pad. The fixture solves the problems that the fixture in the prior art is heavy in weight, optical devices are not stably placed, manufacturing tolerances of the optical devices cannot be compatible, equipment maintenance and replacement are frequently carried out, and the like. Especially the production efficiency, the product quality and the input cost.

The utility model is suitable for the field of assembling and welding optical module products.

Drawings

FIG. 1 is a schematic view of a welding jig for connecting an optical device with a double flexible board according to the present invention;

FIG. 2 is a left side three-dimensional schematic view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2;

in the figure: the device comprises a 1-T-shaped handle, a 2-portal guide plate, a 3-Z-shaped bending pressing plate, a 4-BIDI optical device, a 5-first FPC and PCB combined body, a 6-elastic supporting body, a 7-base, an 8-optical port lifting block, a 9-second FPC and PCB combined body, a 10-buffer sleeve, an 11-U-shaped hollow receiving column, a 12-spring and a 13-screw.

The present invention will be described in further detail with reference to specific embodiments.

Detailed Description

Refer to fig. 1 and 2. In a preferred embodiment described below, a bonding jig for bonding an optical device to a double flexible board includes: articulate T type handle 1 on 7 back of the body ends of base, with the portal baffle 2 of the 1 linkage of T type handle, wherein: the T-shaped handle 1 is hinged to the portal guide plate 2 through an H-shaped rocker arm of a fixed end crank hinge and a rocker bracket hinged to the tail edge of the step platform of the base 7 by utilizing a bait fork tail of the H-shaped rocker arm; the portal guide plate 2 is fixed on a base 7 boss through a U-shaped hollow bearing column 11 below a double-fork lug arm end, a Z-shaped bending pressing plate 3 extending downwards along a boss step surface is fixedly connected onto the double-fork lug support arm, a free end pressing plate of the left Z-shaped bending pressing plate 3 is connected with a second FPC and PCB combination 9, a buffer sleeve 10 arranged below the double-fork lug support arm is locked through a bolt, a BIDI optical device 4 longitudinally inserted into a cantilever slot of the base 7 is clamped on an optical port lifting block 8 of a Z-shaped step manufactured with a ㄱ -shaped platform, a free end pressing plate of the right Z-shaped bending pressing plate 3 is connected with a first FPC and PCB combination 5, and the other BIDI optical device 4 vertical to the boss step surface of the base 7 is clamped on an elastic support body 6 fixedly connected onto the Z-shaped step platform; the T-shaped handle 1 drives two Z-shaped bending pressing plates 3 to rotate by means of breaking the moment with hands, and utilizes an H-shaped crank link mechanism to link a portal guide plate 2, so that a BIDI optical device 4 and an FPC and PCB combined body 5 are pressed down to be attached to each other, a concave cylindrical surface at the front end of the optical device is clamped, the up-and-down freedom degree of the optical device is limited, an array bonding pad on the optical device is combined, and the BIDI optical device 4 and the FPC and PCB combined body are welded together.

An elastic support body 6 fixedly connected to the Z-shaped step L-shaped platform is provided with a pagoda head plunger at the back of the Z-shaped bending pressing plate 3, and a step hole for accommodating the pagoda head plunger and a circular ring cross beam are separated.

The pagoda head plunger piston is assembled in a step hole of a Z-shaped step L-shaped platform through an Jiong-shaped step hole and a spring bushing below the circular ring cross beam partition, and the spring 12 is sleeved on the spring bushing.

Stepped cylindrical polish rod below the pagoda head plunger and adjusting screws 13 passing through the stepped holes in the bottom end of the L-shaped platform with the 7Z-shaped steps are butted oppositely to adjust the vertical direction moving range of the pagoda head plunger, and 4-5 support legs on the tail plane of the optical device are clamped in welding gaps of corresponding small holes of the PCB soft board.

The utility model is not limited to the foregoing embodiments. The utility model extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed. Those skilled in the art to which the utility model pertains will appreciate that insubstantial changes or modifications can be made without departing from the spirit of the utility model as defined by the appended claims.

Claims

1. A welding fixture for connecting an optical device with a double flexible board comprises: articulate T type handle (1) on base (7) back of the body end, with portal baffle (2) of T type handle (1) linkage, its characterized in that: the T-shaped handle (1) is connected with a rocker bracket on the tail edge of the step platform of the base (7) through an H-shaped rocker arm of a fixed end crank hinge, and a fork bait tail of the H-shaped rocker arm is used for connecting a portal guide plate (2); the portal guide plate (2) is fixed on a boss of a base (7) through a U-shaped hollow receiving column (11) below the end of a double-fork lug arm, a Z-shaped bending pressing plate (3) extending downwards along the step surface of the boss is fixedly connected to the double-fork lug arm, a free end pressing plate of the left Z-shaped bending pressing plate (3) is connected with a second FPC and PCB combination (9), a buffer sleeve (10) is arranged below the double-fork lug arm in a locking mode through bolts, a BIDI optical device (4) longitudinally inserted into a cantilever slot of the base (7) is clamped on an optical port lifting block (8) with a ㄱ -shaped platform in a Z-shaped step mode, a free end pressing plate of the right Z-shaped bending pressing plate (3) is connected with a first FPC and PCB combination (5), and the other BIDI optical device (4) perpendicular to the step surface of the boss of the base (7) is clamped on an elastic supporting body (6) fixedly connected to the Z-shaped platform in a Z-shaped step mode; t type handle (1) relies on breaking the power square off with the fingers and thumb, utilize H type crank link mechanism linkage portal baffle (2), drive two Z shapes and buckle clamp plate (3) and make rotary motion, push down to BIDI optical device (4) and FPC and PCB combination and make both laminating, the face of cylinder that pinches the concave entering of optical device front end, restrict its optical device's the degree of freedom that reciprocates simultaneously, combine the array pad on the optical device, combine the welding together with BIDI optical device (4) and FPC and PCB.

2. The bonding jig for bonding an optical device to a double flexible board according to claim 1, wherein: an elastic support body (6) fixedly connected to the Z-shaped step L-shaped platform is provided with a pagoda head plunger at the back of the Z-shaped bending pressing plate (3), and a step hole and a circular ring cross beam for accommodating the pagoda head plunger are separated.

3. The bonding jig for bonding an optical device to a double flexible board according to claim 2, wherein: the pagoda head plunger is assembled in the step hole of the Z-shaped step L-shaped platform through the Jiong-shaped step hole and the spring bushing below the circular ring beam partition, and the spring (12) is sleeved on the spring bushing.

4. The bonding jig for bonding an optical device to a double flexible board according to claim 1, wherein: the stepped cylindrical polish rod below the pagoda head plunger and an adjusting screw (13) passing through a stepped hole at the bottom end of a Z-shaped step L-shaped platform of a base (7) are butted oppositely to adjust the vertical direction moving range of the pagoda head plunger, and 4-5 support legs on the tail plane of an optical device are clamped in a welding gap of a corresponding small hole of a PCB soft board.