Tool for local shielding and gold plating of stretching cap

Abstract

The utility model relates to the technical field of microelectronic packaging, in particular to a tool for partial shielding and gold plating of a stretching cap, which is suitable for partial shielding of UV (ultraviolet) glue and is used for accurately plating gold on a product. The stretching cap further comprises a stretching cap body, a gluing base, a gluing cover plate, an upper sealing ring and a lower sealing ring, the lower sealing ring is fixedly connected with the corresponding gluing base in a matched mode, the upper sealing ring is fixedly connected with the corresponding gluing cover plate in a matched mode, and the bottom end of the stretching cap body is placed on the gluing base. The bottom end of the gluing cover plate is hermetically attached to the top end of the stretching cap body and the top end of the gluing base.

Description

TECHNICAL FIELD

[0001] The utility model relates to microelectronic packaging technical field, specifically for a kind of for local shielding gold plating of stretch cap. BACKGROUND

[0002] Gold plating is a common surface treatment technology, mainly used in electronic components, precision instruments and other industries. In the packaging process of semiconductor chips, gold plating can greatly improve the welding performance of the product, and ensure the quality and reliability of subsequent welding. Therefore, local gold plating or whole workpiece gold plating at the contact points, pins and other parts of electronic components can greatly improve the reliability and service life of the product. Compared with whole gold plating, local gold plating can greatly reduce the amount of gold, thereby reducing costs. In particular, in mass production, this saving effect is more obvious, which can maximize economic benefits while ensuring product quality.

[0003] For stretch cap, the welding position is usually at the brim position, so other positions need to be shielded first. Because the stretch cap is a three-dimensional mechanism, using ordinary printing or impregnation process not only cannot accurately control the shielding boundary, but also the thickness of the glue layer is difficult to control, which may result in that the gold plating area cannot meet the product requirements. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a tool for local shielding gold plating of stretch cap, and a tool for local shielding of UV glue is made to achieve accurate gold plating of the product, thereby enhancing the practicality of the tool for local shielding gold plating of stretch cap.

[0006] (II) Technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a tool for local shielding gold plating of stretch cap, further comprising a stretch cap body, a glue coating base, a glue coating cover plate, an upper sealing ring and a lower sealing ring, the lower sealing ring is fixedly connected with the corresponding glue coating base, the upper sealing ring is fixedly connected with the corresponding glue coating cover plate, the stretch cap body is placed at the bottom end of the glue coating base, and the bottom end of the glue coating cover plate is sealingly attached to the top end of the stretch cap body and the top end of the glue coating base.

[0008] Further, the glue coating base is provided with a sink, a first back-shaped groove and a first boss in the center, the sink is positioned with the corresponding stretch cap body, the first back-shaped groove is fixedly connected with the lower sealing ring, and the first boss is filled in the inner cavity of the stretch cap body.

[0009] Further, one side of the glue coating cover plate is provided with a second back-shaped groove, a second boss and a square through hole, the second back-shaped groove is used for placing the upper sealing ring, and the second boss is used for limiting the upper sealing ring.

[0010] Further, the thickness and the width of the lower sealing ring are one millimeter.

[0011] Further, the thickness and the width of the upper sealing ring are one millimeter.

[0012] Further, the glue coating base and the glue coating cover plate are made of transparent plastic.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the utility model provides a tool for local shielding gold plating of stretch cap, has the following beneficial effects:

[0015] The tool for local shielding gold plating of stretch cap is made of transparent glue coating base and glue coating cover plate and cooperates with the upper sealing ring and the lower sealing ring, guarantees UV light curing, solves the problem that the non-gold plating area is damaged when the boundary is not accurate and the glue layer thickness is uneven during local shielding of the stretch cap workpiece in actual production, and the tool for local shielding gold plating of stretch cap is used to make a tool suitable for UV glue local shielding, so that the product is accurately gold plated, thereby enhancing practicality. ACCURATE DRAWING

[0016] Figure 1 It is a structural schematic view of the tool for local shielding gold plating of stretch cap of the utility model;

[0017] Figure 2 It is a structural schematic view of the tool for local shielding gold plating of stretch cap of the utility model;

[0018] Figure 3 It is a structural schematic view of the glue coating base of the tool for local shielding gold plating of stretch cap of the utility model;

[0019] Figure 4 It is a structural schematic view of the glue coating cover plate of the tool for local shielding gold plating of stretch cap of the utility model;

[0020] Figure 5 It is a structural schematic view of the stretch cap body of the tool for local shielding gold plating of stretch cap of the utility model;

[0021] Figure 6 It is a structural schematic view of the upper sealing ring of the tool for local shielding gold plating of stretch cap of the utility model;

[0022] Figure 7The utility model relates to a structure schematic drawing of lower sealing ring of a tool for local shielding gold plating of stretch cap.

[0023] In the figure: 1, stretch cap body; 2, glue coating base; 3, glue coating cover plate; 4, upper sealing ring; 5, lower sealing ring; 6, sink; 7, first back-shaped groove; 8, first boss; 9, second back-shaped groove; 10, second boss; 11, square through hole. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range protected by the utility model.

[0025] Please refer to Figures 1-7 A tool for local shielding gold plating of stretch cap further includes stretch cap body 1, glue coating base 2, glue coating cover plate 3, upper sealing ring 4 and lower sealing ring 5, the lower sealing ring is fixedly connected with the corresponding glue coating base 2, the upper sealing ring 4 is fixedly connected with the corresponding glue coating cover plate 3, the stretch cap body 1 is placed on the glue coating base 2, and the bottom end of the glue coating cover plate 3 is sealingly attached to the top end of the stretch cap body 1 and the top end of the glue coating base 2.

[0026] When the equipment is used, the lower sealing ring 5 is fixed with the glue coating base 2, and then the upper sealing ring 4 is fixed with the glue coating cover plate 3; then the stretch cap body 1 is placed in the glue coating base 2 and attached to the lower sealing ring 5; finally, the glue coating cover plate 3 is attached to the stretch cap body 1, and a tool for local shielding gold plating of stretch cap is made to achieve precise gold plating of the product, thereby enhancing practicability.

[0027] As a preferred embodiment of the above example, the glue base 2 is centrally provided with a sink 6, a first back-shaped groove 7 and a first boss 8, the sink 6 is used for positioning the corresponding stretch cap body 1, the first back-shaped groove 7 is used for cooperating and fixing with the lower sealing ring 5, and the first boss 8 is used for filling the inner cavity of the stretch cap body 1. The glue base 2 is a rectangular transparent plastic block with a size of 26mm*20mm*3mm, and the whole can be considered as three parts: first, a first-stage sink 6 with a size of 15.99mm*12.69mm*0.2mm is arranged at the center of the base, and a round corner with a radius of R2.0mm is arranged around the first-stage sink 6, which is used for positioning the stretch cap body 1; second, a second-stage first back-shaped groove 7 with a size of 12.09mm*8.79mm is arranged inside, the groove width is 1.5mm, the groove depth is 0.7mm downward from the upper surface of the glue base 2 and 0.3mm upward, which is mainly used for cooperating with the lower sealing ring 5 and isolating the gold-plated area from the non-gold-plated area in the inner cavity of the stretch cap body 1; third, a third-stage first boss 8 with a size of 13.09mm*9.79mm*1.04mm is arranged, the first boss 8 is 0.1mm away from the upper surface of the glue base 2, the draft angle of the first boss 8 is 3°, which is mainly used for filling the inner cavity of the stretch cap body 1, reducing the amount of glue, and supporting the glue layer in the inner cavity. There are through holes with a diameter of φ2mm on both sides, which are used for cooperating and fixing with the glue cover plate 3.

[0028] As a preferred embodiment of the above example, the glue cover plate 3 is provided with a second back-shaped groove 9, a second boss 10 and a square through hole 11 on one side, the second back-shaped groove 9 is used for placing the upper sealing ring 4, and the second boss 10 is used for limiting the upper sealing ring 4. The glue cover plate 3 is a rectangular transparent plastic block with a size of 26mm*20mm*2.84mm, and also consists of three parts: a second back-shaped groove 9 with a size of 17.39mm*14.09mm is arranged outside at the center of the glue cover plate 3, the groove width is 1mm, and the groove depth is 1mm, which is used for placing the upper sealing ring 4; a second back-shaped second boss 10 with a size of 14.94mm*11.64mm*2.34mm is arranged inside the sealing ring, the thickness of the second boss 10 is 0.2mm, and the draft angle is 3°, which is mainly used for limiting the upper sealing ring 4; a third square through hole 11 with a size of 10.27mm*4.59mm*0.2mm is arranged, which corresponds to the hollow part of the stretch cap body 1 and is used for injecting UV glue and placing a hanging plating point device.

[0029] As a preferred embodiment of the above example, the thickness and width of the lower sealing ring 5 are set to one millimeter. The lower sealing ring 5 is a square sealing ring with a size of 12.09mm*8.79mm inside, and the thickness and width are both 1mm, which is used for cooperating with the glue base 2 to seal and shield the non-gluing area in the inner cavity of the stretch cap body 1, preventing the UV glue from penetrating into the gold-plated area.

[0030] In the preferred embodiment of the above-mentioned examples, the upper sealing ring 4 has a thickness and a width of 1 mm, and the upper sealing ring 4 has a structure substantially the same as the lower sealing ring 5, and the size of the inner square sealing ring is 15.39 mm*12.09 mm, and the thickness and the width are both 1 mm. The upper sealing ring 4 cooperates with the glue-coated cover plate 3 to seal and limit the edge of the brim of the stretch cap body 1, thereby ensuring the accuracy of UV glue shielding.

[0031] In the preferred embodiment of the above-mentioned examples, the glue-coated base 2 and the glue-coated cover plate 3 are both made of transparent plastic, which has the advantages of light weight, low cost, good water resistance, strong chemical corrosion resistance, and the ability to ensure the smooth penetration of UV light. The upper and lower sealing rings are made of HNBR hydrogenated nitrile rubber, which has excellent corrosion resistance, tear resistance, and compression deformation resistance, and can ensure the sealing of the glue boundary.

[0032] To explain the possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects that can be achieved, the following specific embodiments are combined with the accompanying drawings to explain in detail. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore cannot limit the protection scope of the present application.

[0033] In this paper, the term "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0034] Unless otherwise defined, the meaning of the technical terms used in this paper is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0035] Although embodiments of the present application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tooling for partially masking gold plating on stretch caps, characterized in that, It also includes a stretch cap body (1), an adhesive base (2), an adhesive cover plate (3), an upper sealing ring (4), and a lower sealing ring (5). The lower sealing ring is fixedly connected to the corresponding adhesive base (2), and the upper sealing ring (4) is fixedly connected to the corresponding adhesive cover plate (3). The bottom end of the stretch cap body (1) is placed on the adhesive base (2), and the bottom end of the adhesive cover plate (3) is sealed and fitted to the top end of the stretch cap body (1) and the top end of the adhesive base (2).

2. The tooling for partially masking gold plating on a stretch cap according to claim 1, characterized in that, The glue-applying base (2) is provided with a sink groove (6), a first spiral groove (7) and a first boss (8) at its center. The sink groove (6) is positioned with the corresponding stretch cap body (1). The first spiral groove (7) is fixed with the lower sealing ring (5). The first boss (8) is filled with the inner cavity of the stretch cap body (1).

3. The tooling for partially masking gold plating on a stretch cap according to claim 2, characterized in that, The adhesive cover plate (3) is provided with a second groove (9), a second boss (10) and a square through hole (11) on one side. The second groove (9) is used to place the upper sealing ring (4) and the second boss (10) is used to limit the upper sealing ring (4).

4. The tooling for partially masking gold plating on a stretch cap according to claim 3, characterized in that, The thickness and width of the lower sealing ring (5) are set to one millimeter.

5. The tooling for partially masking gold plating on a stretch cap according to claim 4, characterized in that, The thickness and width of the upper sealing ring (4) are set to one millimeter.

6. The tooling for partially masking gold plating on a stretch cap according to claim 5, characterized in that, Both the glue-coating base (2) and the glue-coating cover plate (3) are made of transparent plastic.

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