CN109041451B

CN109041451B - FPC assembly and assembling method thereof

Info

Publication number: CN109041451B
Application number: CN201810921605.2A
Authority: CN
Inventors: 肖岚; 何光远; 马增世
Original assignee: Shenzhen Top Link Technologies Co Ltd
Current assignee: Shenzhen Top Link Technologies Co Ltd
Priority date: 2018-08-14
Filing date: 2018-08-14
Publication date: 2020-06-16
Anticipated expiration: 2038-08-14
Also published as: CN109041451A

Abstract

The application provides an assembly method of an FPC assembly, which relates to the technical field of electronic product production, and the method comprises the following steps: brushing solder paste on the FPC, and mounting a plurality of connectors on the positioning cap to fix the distance between the connectors; simultaneously mounting a plurality of connectors mounted on the positioning cap on the FPC brushed with the solder paste through the positioning cap; after the solder paste is hot-melted and solidified, the positioning cap is taken down, so that a plurality of connectors are simultaneously fixed on the FPC; and correspondingly pressing the connector fixed on the FPC into the mounting hole of the plastic part. This application installs the connector in advance and covers the distance between fixed each connector in order to accord with the production needs on the location cap to paste the connector on the FPC that has brushed the tin cream through the location cap, thereby can guarantee accurately that the distance of pasting between each connector of dress on FPC accords with the production requirements, is favorable to accelerating production efficiency and improves the product quality. The present application also provides an FPC assembly assembled by the assembly method of the FPC assembly as described above.

Description

FPC assembly and assembling method thereof

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of electronic product production, in particular to an assembling method of an FPC assembly and the FPC assembly.

[ background of the invention ]

Some present FPC subassemblies of being applied to in 3C product, including FPC, plastic part and be used for connecting the connector of FPC and plastic part, in the technology of producing this kind of FPC subassembly, generally first connect the connector on FPC after, install the connector of connecting on FPC in the plastic part again to accomplish the installation of FPC subassembly. However, when a manufacturer connects the connectors to the FPC, it is difficult to accurately ensure that the distance between the connectors on the FPC meets the production requirements.

[ summary of the invention ]

In order to solve the problems and accurately ensure that the distance between each connector on the FPC meets the production requirement, the application provides an assembly method of the FPC assembly.

The FPC assembly assembling method comprises the following steps:

a. brushing solder paste on the FPC, and mounting a plurality of connectors on the positioning cap to fix the distance between the connectors;

b. simultaneously mounting a plurality of connectors mounted on the positioning cap on the FPC brushed with the solder paste through the positioning cap;

c. after the solder paste is hot-melted and solidified, the positioning cap is taken down, so that a plurality of connectors are simultaneously fixed on the FPC;

d. and correspondingly pressing the connector fixed on the FPC into the mounting hole of the plastic part.

The assembly method of the FPC assembly as described above, the step b includes:

b1, braiding and packaging a plurality of positioning caps provided with connectors by using braiding equipment;

b2, mounting the connector on the positioning cap which is already braided on the FPC with the solder paste by an SMT chip mounting device.

The assembly method of the FPC assembly as described above, the step d includes:

d1, correspondingly press-fitting the connector on the FPC into the mounting hole of the plastic part through a pressure head of the hot-pressing equipment, and transferring heat to the connector by the pressure head when the pressure head is pressed, so that the connector is in hot-melt connection with the plastic part.

In the step d1, the plastic part is provided with an annular mounting recess at the periphery of the mounting hole, and the connector includes a connector body inserted into the mounting hole and an annular flange provided on the connector body and fitted with the annular mounting recess.

According to the assembling method of the FPC assembly, the positioning cap comprises the substrate and the plurality of positioning cylinders arranged on the substrate, the distance between the positioning cylinders is fixed, and the positioning installation cavity which can be installed in a matched mode with the connector is arranged in each positioning cylinder.

According to the assembling method of the FPC assembly, the communication cavity communicated with the positioning installation cavity is arranged below the positioning installation cavity in the positioning cylinder, and the communication groove which extends along the vertical direction of the positioning cylinder and is communicated with the positioning installation cavity and the communication cavity is formed in the side wall of the positioning cylinder.

In the assembling method of the FPC assembly described above, the positioning cap includes two positioning cylinders.

In the assembly method of the FPC assembly as described above, in the step c, the solder paste is thermally melted and cured by using a reflow soldering apparatus.

The application also provides an FPC assembly, which comprises an FPC, a connector connected with the FPC and a plastic part connected with the connector, wherein the FPC assembly is assembled by the assembling method of the FPC assembly.

Compared with the prior art, the method has the following advantages:

1. the connector is installed in advance on the positioning cap cover so as to fix the distance between each connector and meet the production requirement, the connector is attached to the FPC with the tin paste through the positioning cap cover, the distance between each connector attached to the FPC can be accurately ensured to meet the production requirement, and the production efficiency is accelerated and the product quality is improved.

2. This application is connected with the connector through direct brush tin cream on FPC, has reduced the degree of difficulty of going up tin cream, is favorable to improving production efficiency, and direct brush tin cream on FPC in addition, the producer control of being convenient for goes up tin volume, effectively reduces because of going up the uneven phenomenon that leads to appearing the product production badly of tin volume control, effectively improves the production quality of product.

3. This application is through the cooperation of location cap, braid equipment, paster device and hot pressing equipment, can the efficient installation of accomplishing the FPC subassembly, and effectively stop welding defect, in addition, adopts the temperature and the speed through the regulation and control pressure equipment when adopting hot pressing equipment to press the connector pressure equipment to go into in the plastic part to effectively prevent that the plastic part from being scalded.

4. This application passes through hot pressing equipment with the in-process in connector pressure equipment to the mounting hole of plastic part, and hot pressing equipment makes connector and plastic part hot melt be connected on with heat transfer to the connector to improve the connection leakproofness between connector and the plastic part, effectively satisfy the production and use demand.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic view of an assembly process of an FPC assembly;

FIG. 2 is a schematic view of the connector installed into the positioning cap;

FIG. 3 is a schematic view of a positioning cap;

FIG. 4 is a schematic view of the attachment of a connector to an FPC by positioning a cap;

FIG. 5 is a schematic view of a connector attached to the FPC;

FIG. 6 is a schematic view of the FPC and connector press-fit into a plastic part;

FIG. 7 is a schematic view of the FPC assembly after assembly;

FIG. 8 is an exploded schematic view of FIG. 7;

fig. 9 is a schematic view of a connector.

[ detailed description ] embodiments

The present embodiment provides an assembly method of an FPC assembly, as shown in fig. 1, including the following steps:

a. solder paste is applied to the FPC1, and as shown in fig. 2, a plurality of connectors 2 are mounted on the positioning cap 4 such that the distance between the respective connectors 2 is fixed; this step may print solder paste on FPC1 through a solder paste printer.

In the step a, in order to enable the connector 2 to be stably assembled into the positioning cap 4, as shown in fig. 3, the positioning cap 4 includes a substrate 41 and a plurality of positioning cylinders 42 disposed on the substrate 41, and a distance between each positioning cylinder 42 is fixed, specifically, the positioning cap 4 includes two positioning cylinders 42, a positioning installation cavity 421 capable of being installed in cooperation with the connector 2 is disposed in each positioning cylinder 42, and when the assembling operation is performed, the connector 2 is installed into the positioning installation cavity 421. In order to prevent the connector 2 from being clamped in the positioning cylinder 42 and being unable to smoothly separate from the positioning cap 4, a communicating cavity 422 communicated with the positioning installation cavity 421 is arranged below the positioning installation cavity 421 in the positioning cylinder 42, and a communicating slot 423 extending along the vertical direction of the positioning cylinder 42 and communicated with the positioning installation cavity 421 and the communicating cavity 422 is arranged on the side wall of the positioning cylinder 42. When the connector 2 is clamped in the positioning cylinder 42 and cannot be separated from the positioning cap 4, the communicating cavity 422 and the communicating groove 423 are arranged, so that a worker can conveniently use a tool to insert into the positioning cylinder and push the connector away from the positioning cylinder through external force, and the connector can be smoothly separated from the positioning cap and is convenient to use.

b. As shown in fig. 4, the connectors 2 mounted on the positioning cap 4 are simultaneously mounted on the FPC1 brushed with solder paste by the positioning cap 4, so as to improve the mounting efficiency of the connectors 2 on the FPC1, and the automatic mounting of the connectors is realized, and the steps include: b1, braiding and packaging a plurality of positioning caps 4 with connectors 2 by using braiding equipment, and b2, mounting the connectors on the braided positioning caps 4 to the FPC1 brushed with solder paste by using an SMT (surface mount technology) paster device.

c. After the solder paste is thermally melted and solidified, the positioning cap 4 is removed, and the plurality of connectors 2 are simultaneously fixed to the FPC1, as shown in fig. 5. Specifically, in order to effectively eliminate the soldering defect of the solder paste, in step c, the solder paste is subjected to hot melting solidification by using a reflow soldering device.

d. As shown in fig. 6, the connector 2 fixed on the FPC1 is press-fitted into the mounting hole 31 of the plastic member 3, and further, the step d includes: d1 pressing the connector 2 on the FPC1 to the mounting hole 31 of the plastic part 3 by pressing the connector 2 on the FPC1 with the pressing head of the hot pressing device, and transferring heat to the connector 2 by the pressing head to connect the connector 2 and the plastic part 3 by hot melting. Through the in-process in the mounting hole of hot pressing equipment with connector pressure equipment to plastic part, thereby hot pressing equipment melts plastic part 3 through connector 2 on with heat transfer to connector 2, makes connector 2 be connected with 3 hot melts of plastic part to improve the connection leakproofness between connector and the plastic part, effectively satisfy production user demand. In addition, the connector is pressed into the plastic part by adopting hot pressing equipment, and the temperature and the speed of the pressing are regulated and controlled, so that the plastic part is effectively prevented from being scalded. The assembled finished product of the FPC assembly after press fitting is shown in FIG. 7.

In order to improve the connection sealing performance between the plastic part 3 and the connector 2, as shown in fig. 6 to 9, in the step d1, an annular mounting concave step 32 is disposed on the plastic part 3 around the mounting hole 31, the connector 2 includes a connector body 21 inserted into the mounting hole 31 and an annular flange 22 disposed on the connector body 21 and fitted with the annular mounting concave step 32, and when performing hot press-fitting, a hot-melt seal is formed between the annular mounting concave step 32 and the annular flange 22, so that the inside of the mounting hole 31 can be effectively sealed and isolated from the outside, and the sealing and waterproof performance of the product can be improved.

The embodiment installs the connector on the positioning cap in advance so as to fix the distance between each connector to meet the production requirement, and attaches the connector on the FPC with the solder paste through the positioning cap, thereby being capable of accurately ensuring that the distance between each connector attached on the FPC meets the production requirement, being beneficial to accelerating the production efficiency and improving the product quality. Simultaneously through directly brushing tin cream on FPC and being connected with the connector, the degree of difficulty of going up the tin cream has been reduced, be favorable to improving production efficiency, directly brush tin cream on FPC in addition, the producer control of being convenient for goes up tin volume, effectively reduce because of going up the uneven phenomenon that leads to appearing the product production harmfully of tin volume control, effectively improve the production quality of product, and this embodiment is through the location cap, the braid equipment, paster device and hot pressing equipment's cooperation, can the efficient automatic installation who accomplishes the FPC subassembly, and effectively stop welding defect.

The embodiment also provides an FPC assembly, which comprises an FPC, a connector connected with the FPC and a plastic part connected with the connector, wherein the FPC assembly is assembled by the assembling method of the FPC assembly.

The foregoing is illustrative of one embodiment provided in connection with the detailed description and is not intended to limit the disclosure to the particular embodiments described. Similar or identical methods, structures, etc. as used herein, or several technical deductions or substitutions made on the premise of the idea of the present application, should be considered as the protection scope of the present application.

Claims

The assembly method of the FPC assembly is characterized by comprising the following steps:

a. brushing solder paste on an FPC (1), mounting a plurality of connectors (2) on a positioning cap (4) to fix the distance between the connectors (2), wherein the positioning cap (4) comprises a substrate (41) and a plurality of positioning cylinders (42) arranged on the substrate (41), the distance between the positioning cylinders (42) is fixed, positioning mounting cavities (421) which can be matched with the connectors (2) are arranged in the positioning cylinders (42), communication cavities (422) communicated with the positioning mounting cavities (421) are arranged below the positioning mounting cavities (421) in the positioning cylinders (42), and communication slots (423) which extend along the vertical direction of the positioning cylinders (42) and are communicated with the positioning mounting cavities (421) and the communication cavities (422) are formed in the side walls of the positioning cylinders (42);

b. a plurality of connectors (2) mounted on the positioning cap (4) are simultaneously pasted on the FPC (1) brushed with the solder paste through the positioning cap;

c. after the solder paste is hot-melted and solidified, the positioning cap cover (4) is taken down, so that the plurality of connectors (2) are simultaneously fixed on the FPC (1);

d. and correspondingly pressing the connector (2) fixed on the FPC (1) into the mounting hole (31) of the plastic part (3).
2. The assembly method of the FPC assembly of claim 1, wherein the step b includes:

b1, braiding and packaging a plurality of positioning caps (4) provided with connectors (2) by a braiding device;

b2, mounting the connector on the positioning cap (4) which is already braided to the FPC (1) which is brushed with the solder paste through an SMT mounting device.
3. The assembly method of the FPC assembly of claim 1, wherein the step d includes:

d1, correspondingly press-fitting the connector (2) on the FPC (1) into the mounting hole (31) of the plastic part (3) through a pressure head of the hot-pressing equipment, and transferring heat to the connector (2) by the pressure head when the pressure head is pressed, so that the connector (2) is in hot-melt connection with the plastic part (3).
4. The assembly method of FPC assembly according to claim 3, wherein in step d1, said plastic member (3) is provided with an annular mounting recess (32) at the periphery of said mounting hole (31), and said connector (2) includes a connector body (21) inserted into said mounting hole (31) and an annular flange (22) provided on the connector body (21) and fitted with the annular mounting recess (32).
5. The assembly method of the FPC assembly according to claim 1, wherein the positioning cap (4) comprises two positioning barrels (42).
6. The assembly method of the FPC assembly according to claim 1, wherein in the step c, the solder paste is thermally melted and cured using a reflow soldering apparatus.
FPC assembly comprising an FPC (1), a connector (2) connected to the FPC (1) and a plastic part (3) connected to the connector (2), characterised in that it is assembled by the method of assembly of an FPC assembly as claimed in any one of claims 1 to 6.