CN219465233U

CN219465233U - FPC welding alignment jig

Info

Publication number: CN219465233U
Application number: CN202320220430.9U
Authority: CN
Inventors: 杨香亮; 黎业会
Original assignee: Xingyuan Electronic Technology Shenzhen Co Ltd
Current assignee: Xingyuan Electronic Technology Shenzhen Co Ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-08-04
Anticipated expiration: 2033-02-15

Abstract

The utility model relates to the technical field of FPC welding, and discloses an FPC welding alignment jig, which comprises a base station, a positioning device and a positioning device, wherein the base station is used for positioning a main board; a positioning assembly for fixing the FPC board; and the main board is provided with a positioning hole, the FPC board is provided with a window hole corresponding to the positioning hole, and the base station is provided with a positioning groove for positioning the main board. According to the positioning assembly provided by the utility model, after the FPC board is installed in the placing groove, the pressing plate is enabled to be close to the base, the positioning column penetrates through the window opening in the FPC board and the through hole in the clamping plate in the placing groove, and the positioning column can be matched with the positioning hole in the main board, so that positioning is completed, the rotating block is rotated, the clamping plate is enabled to rotate to one side, the FPC board can be attached to the main board in the downward moving process, then the negative pressure device works, the FPC board is automatically sucked, the pressing plate is pressed down again at the moment, the FPC board and the main board can be accurately positioned, and welding is completed.

Description

FPC welding alignment jig

Technical Field

The utility model relates to the technical field of FPC board welding, in particular to an FPC welding alignment jig.

Background

FPC soldering is a way of connecting circuits in a module that can connect the electronic circuits of two components together. The cost of the welding mode is lower than that of the connection mode by using the connector, and the connection mode is firm and reliable and is widely used in the electronic industry.

However, the welding has a plurality of problems, such as poor welding, false welding, low welding alignment efficiency and the like, and the poor welding and the false welding can be intercepted by a CCD full inspection mode; welding alignment is usually performed by means of alignment mark lines on a main board, but the mark lines are silk-screen printing lines, so that the accuracy is generally low, silk-screen printing lines cannot be arranged on bonding pads, and the alignment efficiency is low. With particular reference to fig. 1-3.

Therefore, an FPC soldering alignment jig is proposed to solve the above problems.

Disclosure of Invention

In order to solve the technical problems in the background art, the utility model provides an FPC welding alignment jig.

The utility model is realized by adopting the following technical scheme: an FPC welding alignment jig comprises

A base station for positioning the motherboard;

a positioning assembly for fixing the FPC board;

and the main board is provided with a positioning hole, and the FPC board is provided with a fenestration hole corresponding to the positioning hole.

Preferably, a positioning groove for positioning the main board is arranged on the base station.

Preferably, the positioning assembly comprises a pressing plate, a positioning pin vertically penetrating through the pressing plate and a guiding mechanism connected with the pressing plate, wherein the pressing plate is arranged above the base in parallel, a limiting mechanism for fixing the FPC board is arranged on the pressing plate, and the positioning pin can penetrate through a window opening hole in the FPC board and then penetrates through the limiting mechanism.

Preferably, the top of the locating pin is fixed with a movable plate, electromagnets are arranged on the movable plate and the pressing plate, a return spring I is sleeved outside the locating pin between the pressing plate and the movable plate, and the movable plate and the electromagnets on the pressing plate can magnetically attract each other.

Preferably, the stop gear is including rotating the rotatory piece of connection in clamp plate one end, the bottom of rotatory piece is fixed with the cardboard, seted up the perforation on the cardboard to be used for the locating pin post to pass, and the cardboard can rotate to the below of clamp plate, and parallel with the clamp plate, and form the standing groove of placing the FPC board between cardboard and the clamp plate.

Preferably, the guide mechanism comprises a fixed socket and a movable rod which is connected with the fixed socket in a sliding manner, the top end of the movable rod is connected with the pressing plate, and the bottom end of the movable rod is connected with the inner wall of the movable socket through a second return spring.

Preferably, an air cavity is arranged in the pressing plate, a plurality of air holes corresponding to the placing grooves are formed in the bottom surface of the pressing plate, the air cavity is connected with an external negative pressure device through an air pipe, and the air holes are used for sucking the FPC board in the placing grooves in a negative pressure mode.

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

according to the utility model, the FPC is provided with the opening hole, the main board is provided with the positioning hole, and the position of the hole is determined by the die, so that the precision is higher than that of the silk-screen wire, the structure is convenient for manual welding alignment, automatic alignment can be realized, and the welding efficiency can be obviously improved.

According to the positioning assembly provided by the utility model, after the FPC board is installed in the placing groove, the pressing plate is enabled to be close to the base, the positioning column penetrates through the window opening in the FPC board and the through hole in the clamping plate in the placing groove, and the positioning column can be matched with the positioning hole in the main board, so that positioning is completed, the rotating block is rotated, the clamping plate is enabled to rotate to one side, the FPC board can be attached to the main board in the downward moving process, then the negative pressure device works, the FPC board is automatically sucked, the pressing plate is pressed down again at the moment, the FPC board and the main board can be accurately positioned, and welding is completed.

Drawings

FIG. 1 is a prior art pad on a motherboard of conventional construction;

fig. 2 is a conventional structure of an FPC in the prior art;

FIG. 3 is a schematic diagram showing the alignment of the FPC and the motherboard during soldering of the conventional structure;

FIG. 4 is a diagram illustrating a new motherboard structure according to the present utility model;

FIG. 5 is a new FPC board according to the present utility model;

FIG. 6 is a diagram illustrating a new FPC and motherboard soldering alignment proposed by the present utility model;

fig. 7 is a schematic structural diagram of the positioning fixture according to the present utility model during docking;

FIG. 8 is a schematic diagram of a positioning fixture according to the present utility model before docking;

FIG. 9 is a perspective view of a positioning assembly according to the present utility model;

fig. 10 is a perspective view of the positioning assembly according to the present utility model when viewed from below.

Main symbol description:

in the figure: base 1, mainboard 2, FPC board 3, clamp plate 4, return spring 5, fly leaf 6, electro-magnet 7, rotatory piece 8, movable rod 9, fixed socket 10, locating hole 11, cardboard 12, return spring 13, perforation 14.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

Example 1:

please refer to fig. 1, an FPC soldering alignment jig includes

A base 1 for positioning the motherboard 2;

a positioning assembly for fixing the FPC board 3;

the main board 2 is provided with a positioning hole 11, and the FPC board 3 is provided with a windowing hole corresponding to the positioning hole 11.

As an alternative embodiment of the present solution, in order to better fix the motherboard 2, a positioning slot for positioning the motherboard 2 is provided on the base 1.

Referring to fig. 7-10, as an alternative embodiment of the present solution, the positioning assembly includes a pressing plate 4, a positioning pin vertically penetrating through the pressing plate 4, and a guiding mechanism connected to the pressing plate 4, where the pressing plate 4 is disposed above the base 1 in parallel, and a limiting mechanism for fixing the FPC board 3 is disposed on the pressing plate 4, and the positioning pin can penetrate through a window opening hole on the FPC board 3 and then penetrate through the limiting mechanism. The position of the FPC board can be fixed by the limiting mechanism, and the positioning is convenient.

As an alternative implementation mode of the scheme, the top end of the locating pin is fixed with a movable plate 6, electromagnets 7 are arranged on the movable plate 6 and the pressing plate 4, a return spring 5 is sleeved outside the locating pin between the pressing plate 4 and the movable plate 6, and the movable plate 6 and the electromagnets 7 on the pressing plate 4 can magnetically attract each other. When the positioning, push down clamp plate 4 to the electro-magnet circular telegram makes fly leaf 6 be close to the clamp plate this moment, and stop gear is passed to the bottom of reference column, and when the clamp plate moved to the spacing hole on the mainboard this moment after the certain position, the electro-magnet outage, the reference column upwards moves, then negative pressure mechanism work, adsorbs fixed FPC board, rotates rotatory piece 8, can make cardboard 12 remove to clamp plate one side, and the last push down clamp plate drives FPC board and mainboard butt joint accuracy, thereby convenient welding.

Referring to fig. 7-10, the limiting mechanism includes a rotating block 8 rotatably connected to one end of the pressing plate 4, a clamping plate 12 is fixed at the bottom of the rotating block 8, and a through hole 14 (see specifically fig. 10) is formed in the clamping plate 12 for a positioning pin to pass through, the clamping plate 12 can rotate below the pressing plate 4 and is parallel to the pressing plate 4, and a placement groove for placing the FPC board 3 is formed between the clamping plate 12 and the pressing plate 4.

As an alternative embodiment of the present solution, the guiding mechanism includes a fixed socket 10 and a movable rod 9 that is slidably inserted into the fixed socket 10, the top end of the movable rod 9 is connected with the pressing plate 4, and the bottom end of the movable rod 9 is connected with the inner wall of the movable socket 10 through a second return spring 13.

As an optional implementation manner of the scheme, an air cavity (not shown) is arranged in the pressing plate 4, a plurality of air holes corresponding to the placing grooves are formed in the bottom surface of the pressing plate 4, the air cavity is connected with an external negative pressure device through an air pipe, the air holes are used for sucking the FPC board in the placing grooves in a negative pressure mode, and a negative pressure fan can be selected as the negative pressure device.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. FPC welding alignment jig, its characterized in that includes

A base station for positioning the motherboard;

a positioning assembly for fixing the FPC board;

a positioning hole is formed in the main board, and a fenestration hole corresponding to the positioning hole is formed in the FPC board;

a positioning groove for positioning the main board is formed in the base station;

the positioning assembly comprises a pressing plate, a positioning pin vertically penetrating through the pressing plate and a guide mechanism connected with the pressing plate, wherein the pressing plate is arranged above the base in parallel, a limiting mechanism for fixing the FPC board is arranged on the pressing plate, and the positioning pin can penetrate through a window opening on the FPC board and then penetrates through the limiting mechanism;

the top end of the positioning pin is fixedly provided with a movable plate, the movable plate and the pressing plate are both provided with electromagnets, a return spring I is sleeved on the outer side of the positioning pin between the pressing plate and the movable plate, and the electromagnets on the movable plate and the pressing plate can attract each other magnetically;

the limiting mechanism comprises a rotating block which is rotationally connected to one end of the pressing plate, a clamping plate is fixed at the bottom of the rotating block, a through hole is formed in the clamping plate and used for allowing a locating pin to pass through, the clamping plate can rotate to the lower side of the pressing plate and is parallel to the pressing plate, and a placing groove for placing an FPC board is formed between the clamping plate and the pressing plate;

the guide mechanism comprises a fixed socket and a movable rod which is connected with the fixed socket in a sliding manner, the top end of the movable rod is connected with the pressing plate, and the bottom end of the movable rod is connected with the inner wall of the movable socket through a second return spring.

2. The FPC welding alignment jig according to claim 1, wherein an air cavity is arranged in the pressing plate, a plurality of air holes corresponding to the placing grooves are formed in the bottom surface of the pressing plate, the air cavity is connected with an external negative pressure device through an air pipe, and the air holes are used for sucking the FPC board in the placing grooves under negative pressure.