CN215787324U - Positioning welding tool for combined PCB of flexible circuit board - Google Patents

Abstract

The positioning welding tool for the flexible circuit board combined PCB combination body disclosed by the utility model is reliable in positioning and high in welding qualification rate of a finished product. The utility model is realized by the following technical scheme: the PCB embedding groove corresponding to the PCB blank pressing groove is manufactured on a boss at the middle part of the welding base, the L-shaped step platform at the free end of the welding base is provided with a limiting platform groove with a rectangular opening, a PCB golden finger tail plate at the tail end of the PCB is embedded into a sinking limiting surface of the PCB golden finger tail plate, the front end of the PCB passes through a PCB positioning column at the column end of the PCB positioning column on the groove platform of the limiting platform groove, after the step is lifted for limitation, a bolt is inserted into a screw hole of the groove platform for locking and positioning, so that the whole PCB is in a horizontal position, two-wing hand-wrestling plates on the free end of an upturned cover are wrestling, a magnet absorption groove for absorbing a magnet is filled, a plane boss at the upper end of the welding base is attached to a welding pad of the flexible circuit board and the PCB in a dragging and welding mode.

Description

Positioning welding tool for combined PCB of flexible circuit board

Technical Field

The utility model relates to the technical field of welding tools, in particular to a tool clamp capable of effectively fixing and controlling a PCB to be positioned and welded.

Background

The welding tool fixture is a technological device which accurately positions and reliably clamps a weldment, facilitates assembly and welding of the weldment and guarantees the structural precision requirement of the weldment. The flexible circuit board is used as a bridge for connecting the PCB and the optical device, and has higher flexibility, holes are arranged at two ends of the flexible circuit board, and when the flexible circuit board and the PCB are welded, molten tin can permeate into the flexible circuit board to be attached to the PCB. In the production process of soldering the flexible circuit board and the PCB, two horizontal flexible circuit boards need to be soldered on the PCB. At present, two common FPC welding processes are available, one is manual dragging welding, and the other is press welding of a tin press. The manual dragging welding is a manual mode, a tin wire is used as a medium, and the two to-be-welded bodies are welded together by using an electric soldering iron heated to a proper temperature. Meanwhile, the industry uses the scheme at present for the most part. The manual drag welding is a reasonable scheme with low cost and high cost performance. However, welding is not easy to control, manual error is large, and mutual interference of adjacent lines, such as electromagnetic interference of a circuit board, is easy to occur. When the circuit board is heated for a long time, the copper foil is easy to expand and fall off. If the flatness of the bottom surface is not flat, the shape correction is needed after welding, and the production efficiency is low. When the size of the flexible circuit board is overlarge, although welding is easy to control, the printed line is long, impedance is increased, noise resistance is reduced, and cost is increased; although the welding of the press welding of the tin press is smoother and the short circuit of the cold joint occurs less, the cost of the tin press is high, the welding can not be completed once, the turnover is needed, and the welding shrinkage can not be controlled. And the tin soldering machine has the defects of special requirements on the typesetting of the elements and the like. Nowadays, the iteration speed of optical module products is high, and the PCB structure is also changed frequently. At present, optical modules are large in production order quantity, and the quality requirement for the optical modules is strict, so that the operation requirement of a positioning tool is simpler and more convenient, the positioning is more reliable, the qualified rate of finished products after processing is higher, and the production efficiency is higher.

At present, when a flexible board and a PCB are welded in a fixed position, the PCB is directly placed on a table top to be welded, or the used tool cannot completely fix the PCB according to the specified requirements, so that the PCB cannot be horizontally fixed, and the like. Leading to the occurrence of cold joint and missing joint of the welded finished product; the finished product of the PCB close to the operation table top is easy to be adhered with dirt and scraps; the protection of components on the PCB board, etc. is not considered sufficiently or even considered. These problems affect the productivity of mass production, reduce the work efficiency, affect the product quality, and increase the cost. In addition, human factors have great influence, so that welding quality is uneven, the later repair rate is high, and the labor cost is increased.

SUMMERY OF THE UTILITY MODEL

Aiming at overcoming the defects in the prior art, the utility model aims to provide the positioning and welding tool for the flexible circuit board combined PCB combination body, which is simpler and more reliable in positioning, high in welding qualification rate of finished products, higher in qualification rate of processed finished products and higher in production efficiency.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a flexible circuit board combination PCB combination fixed-position welding frock, includes: the system has the welding base 8 of U logical groove 4, boss and L step platform, articulates the thing lid 1 that overturns on welding base 8 tailstock, its characterized in that: a PCB blank pressing groove 2 is arranged in the center of the upper overturned object cover 1 ㅠ, a PCB board embedding groove 9 corresponding to the PCB blank pressing groove 2 is arranged on a middle boss of the welding base 8, an L-shaped step platform welded on the free end of the base 8 is provided with a limit platform groove 13 with a rectangular opening, a PCB golden finger tail board 16 at the tail end of the PCB 6 is embedded in a PCB golden finger tail board sinking limit surface 11, two sides of the tail end of the PCB 6 are embedded in a PCB board sliding insert 10, the PCB positioning column 5 is connected with the welding base 8 through a screw, the position is limited by the structure of the PCB positioning column 5 fixed on the lifting limit table 15, the whole PCB 6 is in a horizontal position, the two-wing hand-wrestling board on the free end of the upper turner cover 1 is wrestled, the magnetic absorption groove 3 of the magnetic absorption body is filled, through magnetic attraction, the plane boss at the upper end of the welding base 8 is attached to each other, and the flexible circuit board is welded with the PCB pad 17 on the PCB 6 in a drag welding mode.

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

the utility model adopts a welding base 8 which is provided with a U-shaped through groove 4, a boss and an L-shaped step platform, the connection mode is that an upper overturned object cover and the welding base are hinged, and the two surfaces of the overturned object cover and the welding base are jointed by rotating around a hinge shaft. The upper turnover cover can be opened and closed more simply and conveniently without structures such as a lock catch, and the production efficiency is greatly improved.

The PCB positioning column is fixed to a proper position distance by connecting a PCB positioning column 5 and a welding base 8 through screws, wherein a PCB edge pressing groove 2 and magnetic absorption grooves 3 which are symmetrical about the PCB edge pressing groove 2 are formed in the center of the upper overturning object cover 1 ㅠ, a PCB board embedding groove 9 corresponding to the PCB edge pressing groove 2 is formed in a boss of the welding base 8, a limiting platform groove 13 with a rectangular opening is formed in an L-shaped step platform on the free end of the welding base 8, a PCB golden finger tail board 16 at the tail end of the PCB 6 is embedded in a PCB golden finger tail board sinking limiting surface 11, two sides of the tail end of the PCB 6 are embedded in a PCB board sliding insertion 10, the PCB positioning column 5 is connected with the welding base 8 through screws, and two sides of the front end of the PCB 6 are limited through a PCB positioning column 5 structure on a PCB lifting limiting platform 15. Through PCB blank pressing groove 2, PCB board sliding plug 10 and PCB reference column 5 push down the PCB board, make the PCB board level place with the help of the PCB on the reference column breach platform that sinks, PCB fixes like this and can deal with the pressing force of electric iron welding when the pressure welding, guarantees that welding operation normally goes on steadily. Meanwhile, the welding base can be selected according to whether the PCB has a corresponding vacancy or not, a downward pressing force can be applied to a PCB pad during welding operation, and an upward force is generated at the golden finger position of the PCB through a moment. At this time, the PCB board will not move forward and backward due to the downward reaction force and friction of the upper turnover cover to the PCB board. In the process of ensuring welding, the PCB can not fall off due to pressing, so that the positioning is more reliable, and the welding yield is higher.

The PCB edge pressing groove 2 filled with the magnet and the corresponding structure on the welding base are adopted, the upper end plane lug boss of the welding base 8 is jointed through magnetic attraction, and the flexible circuit board and the welding pad of the PCB 6 are welded in a drag welding mode. The different scenes of arranging of PCB board component has been satisfied, when satisfying the rigidity, can not harm the PCB board, reduces the cost loss of raw materials, reduces the cost of reprocessing. The resource utilization rate is improved, and the cost of the enterprise on tool purchase is reduced.

The utility model has the advantages of convenient PCB installation, good PCB fixing effect, compatibility with PCBs with different lengths, strong practicability and particular suitability for the field of assembling and welding optical module products.

Drawings

FIG. 1 is a schematic structural view of a positioning and welding tool for a combined PCB of a flexible circuit board of the present invention;

FIG. 2 is a schematic view of the weld base configuration of FIG. 1;

FIG. 3 is a locating post;

FIG. 4 is a schematic diagram of a PCB board structure;

in the figure: the technical scheme of the patent is further described in detail below the upper overturned object cover, 2-PCB edge pressing groove, 3-magnetic attracting groove, 4-U through groove, 5-PCB positioning column, 6-PCB plate, 7-rectangular lightening through groove, 9-PCB plate embedding groove, 10-PCB plate sliding insertion, 11-PCB golden finger tail plate sinking limiting surface, 12-sinking notch, 13-limiting platform groove, 14-screw hole, 15-PCB lifting limiting platform, 16-PCB golden finger tail plate and 17-PCB welding disc by combining with the specific implementation mode.

Detailed Description

Refer to fig. 1 and 2. In a preferred embodiment described below, a flexible circuit board combined PCB assembly positioning and welding tool includes: a welding base 8 provided with a U-shaped through groove 4, a boss and an L-shaped step platform, and an upper overturned object cover 1 hinged on a tailstock of the welding base 8. A PCB blank pressing groove 2 is arranged in the center of the upper overturned object cover 1 ㅠ, a PCB board embedding groove 9 corresponding to the PCB blank pressing groove 2 is arranged on a middle boss of the welding base 8, a limit platform groove 13 with a rectangular opening is arranged on an L-shaped step platform on the free end of the welding base 8, a PCB golden finger tail board 16 at the tail end of the PCB 6 is embedded in a PCB golden finger tail board sinking limit surface 11, two sides of the tail end of the PCB 6 are embedded in a PCB board sliding insert 10, the PCB positioning column 5 is connected with the welding base 8 through a screw, a PCB lifting limit table 15 structure for fixing the PCB positioning column 5 is used for limiting, the whole PCB 6 is in a horizontal position, the two-wing hand-wrestling board on the free end of the upper turner cover 1 is wrestled, the magnetic absorption groove 3 of the magnetic absorption body is filled, through magnetic attraction, the plane boss at the upper end of the welding base 8 is attached to each other, and the flexible circuit board is welded with the PCB pad 17 on the PCB 6 in a drag welding mode.

The bottom of the welding base 8 is provided with a rectangular lightening through groove 7. The root parts of the two sides of the PCB embedding groove 9 are provided with a PCB sliding insert 10, and the two sides of the port are provided with sunken gaps 12 for positioning PCB steps.

See fig. 3. The lifting limiting table 15 is a dislocation upright column connected with the necking curved surface floor, and the small-end bent neck and the PCB positioning column 5 on the upright column of the large-end bent plate are dislocated oppositely.

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 (4)

1. The utility model provides a flexible circuit board combination PCB combination fixed-position welding frock, includes: the system has welding base (8) that the U led to groove (4), boss and L step platform, articulates last upset thing lid (1) on welding base (8) tailstock, its characterized in that: the central part of the ㅠ body of the upper overturned object cover (1) is provided with a PCB blank pressing groove (2), a middle boss of a welding base (8) is provided with a PCB board embedded groove (9) corresponding to the PCB blank pressing groove (2), an L-shaped step platform welded on the free end of the base (8) is provided with a limit platform groove (13) with a rectangular opening, a PCB golden finger tail board (16) at the tail end of the PCB board (6) is embedded in a PCB golden finger tail board sinking limit surface (11), two sides of the tail end of the PCB board (6) are embedded in a PCB board sliding insert (10), a PCB positioning column (5) is connected with the welding base (8) through screws, the PCB positioning column (5) structure fixed on a PCB lifting limit platform (15) is used for limiting, the whole PCB board (6) is in a horizontal position, two-wing hand boards at the free end of the upper overturned object cover (1) are pulled, a magnetic absorption groove (3) filled with an absorption magnet and the magnetic absorption is absorbed through magnetism, and (3) attaching the plane boss at the upper end of the welding base (8), and welding the flexible circuit board and the PCB pad (17) on the PCB (6) in a dragging welding mode.

2. The flexible circuit board combined PCB combination positioning and welding tool as claimed in claim 1, wherein: the bottom of the welding base (8) is provided with a rectangular lightening through groove (7).

3. The flexible circuit board combined PCB combination positioning and welding tool as claimed in claim 1, wherein: the root parts of the two sides of the PCB embedding groove (9) are provided with a PCB sliding insert (10), and the two sides of the port are provided with sunken gaps (12) for positioning PCB steps.

4. The flexible circuit board combined PCB combination positioning and welding tool as claimed in claim 1, wherein: the PCB lifting limiting table (15) is a dislocation upright post connected with the necking curved surface floor, and the small-end curved neck and the PCB positioning post (5) on the upright post of the large-end curved plate are dislocated oppositely.

Images