Box dam carrier for FPC (Flexible Printed Circuit) dispensing

Abstract

A box dam carrier for FPC (flexible printed circuit) dispensing belongs to the technical field of flexible circuit production, and comprises a carrier, an FPCA to be dispensed is placed on the carrier, the FPCA placed on the carrier is provided with a dispensing area and a non-dispensing area, a sheet plate for flattening the FPCA during dispensing is arranged in the non-dispensing area, the dispensing area is provided with a box dam member sleeved on a functional PIN of the FPCA, and the box dam member is provided with a plurality of through holes. And the box dam piece is separated from or connected with the sheet plate. During production, a proper amount of glue is filled in the box dam, the box dam is removed after the glue is solidified, glue shaping is achieved, and the size of the glue is controlled through the box dam piece.

Description

Technical Field

[0001] This application belongs to the field of flexible circuit manufacturing technology, and specifically relates to a dam carrier for FPC dispensing. Background Technology

[0002] After FPCs are assembled using SMT processes to form FPCA components, the functional pins of the connectors within these components need to be protected. Typically, this is achieved by covering them with adhesive, which then cures to form a robust protective layer. However, when thermosetting adhesives are used to cover and protect the connector functional pins, issues such as excessive adhesive overflow and collapse leading to exposed metal functional pins can occur. In traditional solder dispensing processes, adhesive can overflow into adjacent areas, resulting not only in poor FPC appearance but also, due to the increased dispensing area and insufficient adhesive thickness and filling, causing solder corrosion.

[0003] Existing dispensing carriers such as Figure 1 As shown, a flat carrier is used. After the FPCA is placed on the carrier, it also rests flat on the carrier. When adhesive is applied to the connector's functional pins, it flows along the FPC direction, reaching a maximum length of 20mm. This affects the use of other components. Furthermore, the widespread diffusion of the adhesive prevents it from properly adhering to the functional pins, resulting in exposed pin metal. One solution is to perform a second application and curing, which further reduces work efficiency and the strength of the cured adhesive.

[0004] The publication document CN116419500A provides a second method for dispensing FPCs. This method involves first making the dispensing area protrude away from the non-dispensing area in a direction opposite to the second surface, and then dispensing the solder in the dispensing area. Therefore, the adhesive dispensed on the solder in the dispensing area will not easily overflow into the non-dispensing area. The existing method requires non-standard tooling, and the protruding part needs to be re-molded, resulting in high overall tooling costs; moreover, it is not conducive to the placement and alignment of the dispensing components. Utility Model Content

[0005] The purpose of this invention is to address existing problems by providing a vehicle that is easy to assemble, inexpensive, and easy to align.

[0006] To achieve the aforementioned technical objectives, the following technical solution is provided: a damming carrier for FPC dispensing, comprising a carrier on which an FPCA to be dispensed is placed. The FPCA placed on the carrier has a dispensing area and a non-dispensing area. The non-dispensing area has a sheet for flattening the FPCA during dispensing. The dispensing area has a damming component fitted onto the functional pins of the FPCA. The damming component is separate from or connected to the sheet. During production, a suitable amount of adhesive is filled inside the dam. After the adhesive cures, the dam is removed to achieve adhesive setting. The size of the adhesive is controlled by the damming component.

[0007] In one feasible implementation, the dam component is a retaining frame, wherein the inner length side is flush with the cross-section of the FPCA, and the adhesive application area of ​​the retaining frame is controlled by setting the length of the inner width side.

[0008] In feasible implementations, the thickness of the vehicle is 2mm-3mm.

[0009] In feasible implementations, the thickness of the dam components is 4mm-10mm.

[0010] In feasible implementations, the inner width of the dam component is 8mm-10mm.

[0011] In feasible implementations, the thickness of the sheet is 1mm-2.5mm.

[0012] In one feasible approach, a lower magnetic block is pre-placed or embedded under the vehicle, and an upper magnetic block is embedded in the lower part of the dam component. The lower and upper magnetic blocks cooperate with each other to enable the dam component to be placed quickly and accurately.

[0013] Compared with the prior art, this utility model has the following advantages: The novel carrier of this application is suitable for stacking low-viscosity adhesives. The main function of the carrier of this application is to avoid adhesive overflow and the undesirable phenomenon of exposed connector functional pins, and it eliminates the need for secondary dispensing and secondary curing, thereby improving work efficiency. Attached Figure Description

[0014] 1. Carrier, 2. Glue application area, 3. Non-glue application area, 4. Plate, 5. Dam component, 11. Lower magnetic block, 12. Upper magnetic block;

[0015] Figure 1 This is a structural diagram of existing technology;

[0016] Figure 2 This is a structural schematic diagram of this embodiment;

[0017] Figure 3 This is a top-down view of the vehicle;

[0018] Figure 4 This is a top view of the dam components;

[0019] Figure 5This is a top view of the sheet metal. Detailed Implementation

[0020] like Figures 2 to 5 The illustrated embodiment provides a damming carrier for FPC dispensing, comprising a carrier 1 on which an FPCA to be dispensed is placed. The FPCA on the carrier 1 has a dispensing area 2 and a non-dispensing area 3. The non-dispensing area 3 has a sheet 4 for flattening the FPCA during dispensing. The dispensing area 2 has a damming component 5 fitted onto a functional pin of the FPCA. The damming component 5 is either separate from or connected to the sheet 4. In this embodiment, the damming component 5 is preferably separated from the sheet 4.

[0021] In this embodiment, the dam component 5 is a retaining frame, wherein the inner length side is flush with the cross-section of the FPCA, and the adhesive application area of ​​the retaining frame is controlled by setting the length of the inner width side. Furthermore, the retaining frame is made of a high-density material.

[0022] In this embodiment, the specific parameters of each component are as follows: the thickness of the carrier 1 is 2mm. The plate 4 is made of steel sheet with a thickness of 2mm. The thickness of the dam component 5 is 7.5mm. The inner width of the dam component 5 is 10mm.

[0023] In another embodiment, a lower magnetic block 11 is pre-placed or embedded below the carrier 1, and an upper magnetic block 12 is embedded in the lower part of the dam component 5. The lower magnetic block 11 and the upper magnetic block 12 cooperate with each other to enable the dam component 5 to be placed quickly and accurately. Preferably, the lower magnetic block 11 is embedded inside the carrier 1.

[0024] In this embodiment, the FPCA is first placed on the dispensing carrier 1, and then the non-dispensing area 3 of the FPCA is covered with a sheet 4. Then, a dam 5 is placed on the dispensing area 2 of the FPCA to surround the functional pins of the FPCA. Then, glue is filled into the dam 5. After the glue cures, the dam is removed to achieve glue shaping and control the glue size.

[0025] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the technical solution of this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this patent application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0028] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dammed carrier for dispensing FPC, comprising a carrier (1) on which an FPCA to be dispensed is placed, wherein the FPCA placed on the carrier (1) has a dispensing area (2) and a non-dispensing area (3). characterized in that The non-dispensing area (3) has a sheet (4) for flattening the FPCA during dispensing, and the dispensing area (2) has a dam (5) sleeved on the functional pin of the FPCA. The dam (5) is separate from or connected to the sheet (4).

2. The dam carrier for FPC dispensing according to claim 1, wherein, The dam component (5) is a retaining frame, wherein the inner length side is flush with the cross section of the FPCA, and the adhesive application area of ​​the retaining frame is controlled by setting the length of the inner width side.

3. The dam carrier for FPC dispensing according to claim 1, wherein, The thickness of the carrier (1) is 2mm-3mm.

4. The dam carrier for FPC dispensing according to claim 1 or 2, characterized in that, The thickness of the dam component (5) is 4mm-10mm.

5. The dam carrier for FPC dispensing according to claim 4, wherein, The inner width of the dam component (5) is 8mm-10mm.

6. The dam carrier for FPC dispensing according to claim 1, wherein, The thickness of the sheet (4) is 1mm-2.5mm.

7. The dam carrier for FPC dispensing according to claim 1, wherein, The carrier (1) has a lower magnetic block (11) pre-placed or embedded below it, and the lower part of the dam component (5) has an upper magnetic block (12) embedded inside it. The lower magnetic block (11) and the upper magnetic block (12) cooperate with each other so that the dam component (5) can be placed quickly and accurately.

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