CN216123061U

CN216123061U - FPC secondary local tin melting jig

Info

Publication number: CN216123061U
Application number: CN202122642684.3U
Authority: CN
Inventors: 琚文彬
Original assignee: Lianying Precision Technology Nantong Co ltd
Current assignee: Lianying Precision Technology Nantong Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-22
Anticipated expiration: 2031-10-29

Abstract

The utility model belongs to the technical field of the technique of flexible circuit board processing and specifically relates to a FPC secondary local tin tool that melts is related to, it includes: the carrier is provided with a placing groove for placing the FPC through secondary tin melting; the heat insulation plate is attached to the carrier; the heat insulation plate is provided with a tin melting port, the tin melting port is used for hot air to pass through, and the connector penetrates through the tin melting port. Utilize the position of heat insulating board pertinence to FPC primary tin soldering to shelter from in this application to make mutual independence between primary tin soldering and the secondary tin soldering, do not influence, guarantee going on in order of tin soldering.

Description

FPC secondary local tin melting jig

Technical Field

The application relates to the technical field of flexible circuit board processing, especially, relate to a FPC secondary local tin tool that melts.

Background

The FPC is an english abbreviation of flexible circuit board, which is a flexible printed circuit board made of polyimide or polyester film as a base material and has high reliability and excellent properties. The high-density light-weight LED lamp has the characteristics of high wiring density, light weight, thin thickness and good bending property.

Referring to fig. 1, a conventional FPC includes a long main board 100 in an initial state before processing, extension pieces 200 horizontally provided at both ends in a main board length direction, and an L-shaped extension bar 300 provided at a middle position of the main board 100; after the processing is finished, each extension strip and each extension sheet are respectively attached with a nickel sheet 400, the nickel sheets are connected through high-temperature tin soldering, and a connector 500 is further soldered on the extension sheet at one end of the length direction of the main board so as to facilitate the connection of a circuit in the later period. At present, the FPC is divided into two soldering processes during processing, wherein the first soldering refers to soldering the nickel sheet 400 on the extension sheet 200 and the extension bar 300 by utilizing high-temperature hot air, namely, one-time soldering; the second soldering is to solder the connector 500 to the extension piece 200, that is, the second soldering.

However, a problem arises: that is, in the secondary soldering, hot air needs to be blown to the position of the connector, and due to the high fluidity of the hot air and the high temperature of several hundred degrees, the hot air can easily flow to the position of the primary soldering nickel sheet, and further the soldering tin of the primary soldering is melted, so that the nickel sheet is loosened in the primary soldering, and the processing quality and progress of the FPC are greatly affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a local tin tool that melts of FPC secondary, and it has soldering and secondary soldering mutually independent, mutually noninterference, can effectively improve the advantage of soldering quality and efficiency.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a local tin tool that melts of FPC secondary, includes:

the carrier is provided with a placing groove for placing the FPC through secondary tin melting;

the heat insulation plate is attached to the carrier and used for shielding a nickel sheet during primary soldering;

the heat insulation plate is provided with a tin melting port, the tin melting port is used for hot air to pass through, and the connector penetrates through the tin melting port.

Realize above-mentioned technical scheme, when the secondary tin soldering, place FPC in the standing groove, attach the heat insulating board on the carrier upper surface, make the heat insulating board cover the position of nickel piece when tin soldering, blow through from melting tin mouth top circulation during heated air circulation, the pertinence heats the position to the connector and melts tin, thereby only carry out the tin soldering to the connector, other positions are covered by the heat insulating board, thereby carry out local melting tin, the nickel piece of avoiding a tin soldering is melted once more, improve FPC production quality and efficiency.

As one of the preferable schemes of the present application, the placing groove is provided with a plurality of placing grooves, the plurality of placing grooves are parallel to each other, the plurality of tin melting openings are provided corresponding to the number of the main board, and the placing groove comprises a main groove for placing the main board, a first sub-groove for placing the secondary soldering extension piece, and a second sub-groove for placing the secondary soldering extension bar.

By the technical scheme, a plurality of FPCs can be soldered for the second time on one carrier, so that the efficiency of secondary soldering is effectively improved.

As one preferable aspect of the present application, the main groove is further provided with an extension groove for placing the extension piece in one-time soldering, and the main groove is provided with an extension channel for placing the extension bar in one-time soldering.

When the technical scheme is realized, the main board of the FPC can be correspondingly placed in the main groove during one-time tin soldering, so that the extension piece without the welded nickel sheet is placed in the extension groove, and the extension bar without the welded nickel sheet is placed in the extension channel; during secondary soldering, correspondingly placing the extension piece with the nickel sheet in the first sub-groove, placing the extension bar with the nickel sheet in the second sub-groove, and then performing the subsequent secondary soldering process; therefore, the processing process of primary and secondary tin soldering of one carrier is realized, and the convenience in use is improved.

As one preferable scheme of the present application, an auxiliary groove is further provided between two adjacent placing grooves, the auxiliary groove is provided in parallel with the placing grooves, and the auxiliary groove is used for placing the FPC during one-time soldering.

By the technical scheme, the number of the placed FPCs is further increased during one-time tin soldering, and therefore the processing efficiency is improved.

As one preferable scheme of the present application, the connectors on two adjacent FPCs are respectively located at two ends of the carrier in the length direction.

According to the technical scheme, the two connectors are arranged in a staggered mode during secondary soldering, the soldering processes of the connectors are mutually independent and cannot be influenced when being blown by hot air, and therefore machining quality is improved.

As one preferable scheme of the present application, a secondary vent is provided on the carrier, and the secondary vent is located at the position of the connector.

According to the technical scheme, the ventilation opening enables hot air to penetrate through the carrier to conduct circulating ventilation, so that the wrapping performance of the connector position is improved, the connector is contacted with the hot air more uniformly, the soldering uniformity of the connector is improved, and the soldering quality is improved.

As one preferable scheme of the application, a shielding plate is arranged at the position of the tin melting port of the heat insulation plate, and the shielding plate covers the nickel sheet on the extension strip.

By the technical scheme, the shielding plate further protects the nickel sheet during primary soldering, so that the situation that the tin of the nickel sheet is melted by hot air of secondary soldering is avoided, and the processing is orderly carried out.

As one preferable aspect of the present application, a plurality of circulation holes for passing hot air are formed through the carrier.

By the technical scheme, the hot air circulation is further improved, so that the tin can be uniformly melted by the hot air during primary soldering or secondary soldering, the soldering uniformity is improved, and the soldering quality is improved.

As one of the preferred scheme of this application, carrier upper surface four edges all vertically are equipped with the reference column, be equipped with the locating hole that is used for the reference column to peg graft the counterpoint on the heat insulating board.

According to the technical scheme, when the heat insulation plate is placed on the carrier, the heat insulation plate is matched with the positioning column and the positioning hole in an inserted mode, so that the tin melting port can be accurately covered at the corresponding position, and the mounting accuracy and convenience are improved.

As one preferable aspect of the present application, a plurality of weight reduction ports are formed through the carrier.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the special heat insulation plate is covered on the carrier during the secondary soldering, so that the connector is exposed in a targeted manner, the nickel sheet during the primary soldering is covered, the tin on the nickel sheet is not melted during the secondary soldering, and the effective processing is ensured;

2. the placing groove capable of placing secondary soldering, the extending groove capable of placing primary soldering and the extending channel are simultaneously arranged on one carrier, so that primary soldering and secondary soldering can be carried out on one carrier at one time, and the use convenience is improved;

3. through setting up secondary vent and circulation hole for hot-blast circulation is more abundant, is heated more evenly during the soldering, improves the processing convenience.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a background art diagram;

FIG. 2 is a schematic view of an overall structure of a FPC secondary local tin melting fixture;

FIG. 3 is an exploded view of the connection structure of the vehicle and the heat insulation board;

fig. 4 is a schematic structural diagram mainly illustrating a carrier structure.

Reference numerals: 100. a main board; 200. an extension bar; 300. an extension bar; 400. a nickel sheet; 500. a connector; 1. a carrier; 2. a heat insulation plate; 3. a tin melting port; 41. a main tank; 42. a first sub-groove; 43. a second sub-groove; 51. an extension groove; 52. an extension lane; 6. an auxiliary groove; 7. a secondary vent; 8. a shielding plate; 9. a circulation hole; 10. a positioning column; 11. positioning holes; 12. a weight-reducing opening.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Referring to fig. 2 and 3, a secondary local tin melting jig for an FPC disclosed in the embodiments of the present application includes a carrier 1 horizontally disposed, and two parallel placing grooves are disposed on the carrier 1; still including attached at the heat insulating board 2 of 1 upper surface of carrier, run through on the heat insulating board 2 and seted up and melt tin mouth 3, it is equipped with two to melt tin mouth 3 and correspond connector 500, and connector 500 exposes through melting tin mouth 3, when the secondary tin soldering, only carries out the tin soldering to connector 500 position, and other positions are covered by heat insulating board 2 to carry out local tin melting, avoid the nickel piece 400 of a tin soldering to be melted once more, improve FPC production quality and efficiency. All vertical reference column 10 that is equipped with of four edges on carrier 1 upper surface, be equipped with on heat insulating board 2 and be used for reference column 10 to peg graft locating hole 11 of counterpointing for it is more accurate when heat insulating board 2 covers, link up the heavy mouth 12 that subtracts who offers a plurality of rectangles form on carrier 1, the operation of being convenient for.

Referring to fig. 3 and 4, an auxiliary groove 6 is further provided between the two placement grooves, the auxiliary groove 6 is used for placing the FPC in one-time soldering, the placement grooves include a main groove 41 for placing the main board 100, a first sub-groove 42 for placing the extension piece and the nickel piece 400 thereof, and a second sub-groove 43 for placing the extension bar 300200 and the nickel piece 400 thereof, the main groove 41 is further horizontally provided with an extension groove 51 for placing the extension piece in one-time soldering, and the main groove 41 is provided with an extension passage 52 for placing the extension bar 300200 in one-time soldering.

In the primary soldering, the two FPCs located in the two placing grooves are arranged in the same direction, the main board 100 of the FPC is correspondingly placed in the main groove 41, then the extending groove 51 without the nickel sheet 400 is placed, the extending strip 300200 without the nickel sheet 400 is placed in the extending channel 52, and then the nickel sheet 400 is correspondingly soldered on the extending sheet and the extending strip 300200, so that the primary soldering and the secondary soldering can be performed on one carrier 1, and the processing efficiency is improved.

Referring to fig. 3, the two connectors 500 are respectively located at the ends of the two main boards 100 that are away from each other in the length direction, and the connectors 500 are independent from each other and cannot be affected by hot air.

During secondary soldering, the extension piece with the nickel sheet 400 is correspondingly placed in the first sub-groove 42, the extension bar 300200 with the nickel sheet 400 is placed in the second sub-groove 43, the connector 500 is placed on the corresponding extension piece, so that the connector 500 penetrates through the tin melting port 3, the secondary soldering process can be carried out by introducing hot air, and the heat insulation plate 2 shields the nickel sheet 400 subjected to primary soldering, thereby improving the soldering quality.

Referring to fig. 3 and 4, a plurality of circulation holes 9 are formed in the carrier 1 in a penetrating manner, a secondary vent 7 is further formed in the position of the connector 500 on the carrier 1 in a penetrating manner, the circulation holes 9 and the vent enable hot air to be ventilated along the vertical direction, accordingly, the wrapping performance of the hot air on the position of the connector 500 is improved, the soldering effect is improved, and a shielding plate 8 is arranged on the tin melting port 3 and used for further shielding the nickel sheet 400.

The embodiment of the application provides a FPC secondary melts tin tool's implementation principle does: in one-time soldering, the main board 100 of the FPC is correspondingly placed in the main groove 41, so that the extension piece of the non-welded nickel piece 400 is placed in the extension groove 51, the extension bar 300200 of the non-welded nickel piece 400 is placed in the extension channel 52, the nickel piece 400 is pressed at the corresponding position, and hot air is introduced for soldering; during secondary soldering, the extension sheet with the nickel sheet 400 is correspondingly placed in the first sub-groove 42, the extension bar 300200 with the nickel sheet 400 is placed in the second sub-groove 43, the heat insulation plate 2 is attached to the surface of the carrier 1, so that the positioning column 10 is in inserted fit with the positioning hole 11, then the connector 500 is placed on the extension sheet, and the subsequent secondary soldering process is carried out; the processing process of primary and secondary soldering of one carrier 1 is realized, the nickel sheet 400 in the primary soldering process is not influenced in the secondary soldering process, and the processing efficiency and the quality are improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a local tin tool that melts of FPC secondary which characterized in that includes:

the device comprises a carrier (1), wherein a placing groove for placing the FPC through secondary tin melting is formed in the carrier (1);

the heat insulation plate (2) is attached to the carrier (1), and the heat insulation plate (2) is used for shielding a nickel sheet (400) during one-time soldering;

the tin melting port (3) is formed in the heat insulation plate (2), the tin melting port (3) is used for hot air to pass through, and the connector (500) penetrates through the tin melting port (3).

2. The FPC secondary local tin melting jig of claim 1, characterized in that: the placing grooves are multiple and parallel to each other, the tin melting openings (3) are multiple in number corresponding to the main board (100), and the placing grooves comprise main grooves (41) used for placing the main board (100), first sub grooves (42) used for placing secondary tin soldering extension pieces (200) and second sub grooves (43) used for placing secondary tin soldering extension bars (300).

3. The FPC secondary local tin melting jig of claim 2, characterized in that: the main groove (41) is provided with an extension groove (51) for placing an extension piece (200) during one-time soldering, and the main groove (41) is provided with an extension channel (52) for placing an extension bar (300) during one-time soldering.

4. The FPC secondary local tin melting jig of claim 3, characterized in that: an auxiliary groove (6) is further arranged between every two adjacent placing grooves, the auxiliary grooves (6) are parallel to the placing grooves, and the auxiliary grooves (6) are used for placing the FPC during one-time soldering.

5. The FPC secondary local tin melting jig of claim 2, characterized in that: the connectors (500) on two adjacent FPCs are respectively positioned at two ends of the carrier (1) in the length direction.

6. The FPC secondary local tin melting jig of claim 5, characterized in that: be equipped with secondary vent (7) on carrier (1), secondary vent (7) are located connector (500) position department.

7. The FPC secondary local tin melting jig of claim 6, characterized in that: the heat insulation plate (2) is provided with a shielding plate (8) at the position of the tin melting port (3), and the shielding plate (8) covers the nickel sheet (400) on the extension strip (300).

8. The FPC secondary local tin melting jig of claim 6, characterized in that: the carrier (1) is provided with a plurality of circulating holes (9) for hot air to pass through.

9. The FPC secondary local tin melting jig of claim 1, characterized in that: all vertical reference column (10) that is equipped with in four edges on carrier (1) upper surface, be equipped with on heat insulating board (2) and be used for reference column (10) to peg graft locating hole (11) of counterpointing.

10. The FPC secondary local tin melting jig of claim 1, characterized in that: the carrier (1) is provided with a plurality of weight reducing openings (12) in a penetrating way.