CN209616253U - The plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product - Google Patents

Abstract

The utility model relates to the plastic-sealing mould structures of ultra-thin multiple-level stack crystal grain product, including die ontology, die ontology is equipped with several exhaust bowl assemblies, and exhaust bowl assembly includes first row air drain and second row air drain, and the depth of first row air drain is greater than the depth of second row air drain.The utility model passes through the exhaust bowl assembly that is ladder-like arranged inside being arranged on die ontology, the depth of first row air drain is greater than the component of second row air drain, and change the spacing between two adjacent exhaust bowl assemblies, change the width of die venting slot and the size of depth, change the arrangement of die venting slot, optimize direction and the flow velocity of the mould stream of plastic packaging material, improve exhaust stability, it improves using the efficiency in installation process, avoid the occurrence of excessive glue phenomenon, starved problem is avoided the occurrence of, production efficiency is improved and reduces cost.

Description

The plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product

Technical field

The utility model relates to plastic-sealing mould structures, more specifically refer to the plastic sealed mould of ultra-thin multiple-level stack crystal grain product Lamps structure.

Background technique

The real estate single side flip-clip that conventional stacked die encapsulation is mainly taken carries out plastic packaging, mould structure design master Plastic packaging forming surface, the charging of plastic packaging material and mould stream are concentrated, then fills entire cavity body of mould to plastic packaging material, this process needs Control mold the intracorporal air of chamber and solid plastic packaging material in air exhausting problem, if equipment, mold, plastic packaging material, The multi-stresses such as product structure and manufacturing process combine optimization to carry out, and can be evaded.But the trend of current plastic packaging product, It is more and more that product integrates crystal grain quantity, and the size of substrate is increasing, and passive device is more and more intensive, and the technology of plastic packaging is difficult Point is higher and higher；It is difficult effectively to carry out complete effective filling to plastic packaging material by the prior art.

At present using die venting slot it is as shown in Figures 1 to 3, use depth for 0.15mm~0.50mm, width be 1.0mm~ The air discharge duct of 3.0mm is exhausted, and distribution and mould of the distance between the adjacent air discharge duct generally according to product on substrate The state of tool stress is distributed, and generally spacing is between 3mm~5mm.When plastic packaging material inject die cavity after, mould chamber air with After the injection pressure-bearing of plastic packaging material, be discharged to die venting trough rim is mobile, in this way in plastic packaging molding die cavity, plastic packaging material flows Direction determine die cavity in air flow direction.But current mould structure is since the depth and width of air discharge duct are larger and structure It arranges unreasonable, when filler material lesser using size leads to excessive glue phenomenon occur during plastic packaging；If using larger size Filler material, product surface starved problem influence the quality and reliability of product.

Therefore, it is necessary to design a kind of new structure, realization avoids the occurrence of excessive glue phenomenon, avoids the occurrence of starved problem, mention High efficiency and reduce cost.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, provide the plastic packaging of ultra-thin multiple-level stack crystal grain product Mould structure.

To achieve the above object, the utility model uses following technical scheme: the plastic packaging of ultra-thin multiple-level stack crystal grain product Mould structure, including die ontology, the die ontology are equipped with several exhaust bowl assemblies, and the exhaust bowl assembly includes the One air discharge duct and second row air drain, the depth of the first row air drain are greater than the depth of the second row air drain.

Its further technical solution are as follows: the first row air drain is with the second row air drain along the length of the die ontology Degree direction is sequentially arranged.

Its further technical solution are as follows: the depth of the first row air drain is 0.15mm to 0.50mm.

Its further technical solution are as follows: the depth of the second row air drain is 0.15mm to 0.50mm.

Its further technical solution are as follows: the width of the first row air drain is 1.0mm to 3.0mm.

Its further technical solution are as follows: the width of the second row air drain is 1.0mm to 3.0mm.

Its further technical solution are as follows: the first row air drain is connected to the second row air drain.

Its further technical solution are as follows: the distance between described exhaust bowl assembly of adjacent two is 8mm to 12mm.

Its further technical solution are as follows: the exhaust bowl assembly further includes third air discharge duct, the third air discharge duct and institute The connection of second row air drain is stated, and the depth of the third air discharge duct is less than the depth of the second row air drain.

Its further technical solution are as follows: the exhaust bowl assembly is located at the upper surface of the die ontology.

The beneficial effect of the utility model compared with prior art is: the utility model by die ontology be arranged in The exhaust bowl assembly that portion is ladder-like arranged, the depth of first row air drain is greater than the component of second row air drain, and changes adjacent Spacing between two exhaust bowl assemblies, changes the width of die venting slot and the size of depth, changes the row of die venting slot Cloth optimizes direction and the flow velocity of the mould stream of plastic packaging material, improves exhaust stability, improves using the efficiency in installation process, avoid There is excessive glue phenomenon, avoid the occurrence of starved problem, improve production efficiency and reduces cost.

The utility model is further described in the following with reference to the drawings and specific embodiments.

Detailed description of the invention

In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is the mold structure diagram of the prior art；

Fig. 2 is partial enlargement diagram at the A of Fig. 1；

Fig. 3 is the cut-away illustration of the air discharge duct of the prior art；

Fig. 4 is the vertical of the plastic-sealing mould structure for the ultra-thin multiple-level stack crystal grain product that the utility model specific embodiment provides Body structural schematic diagram；

Fig. 5 is partial enlargement structural representation at the B of Fig. 4；

Fig. 6 is local cutting structural schematic diagram one at the B of Fig. 4；

Fig. 7 is local cutting structural schematic diagram two at the B of Fig. 4；

Fig. 8 is local main view structure figure at the B of Fig. 4；

Fig. 9 is the arrangement schematic diagram for the gas deflation assembly that the utility model specific implementation provides.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.

It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded Body, step, operation, the presence or addition of element, component and/or its set.

It is also understood that in this utility model term used in the description merely for the sake of description specific embodiment Purpose and be not intended to limit the utility model.As used in the utility model specification and appended book Like that, other situations unless the context is clearly specified, otherwise " one " of singular, "one" and "the" are intended to include plural number Form.

It will be further appreciated that the term used in the utility model specification and appended book " and/ Or " refer to any combination and all possible combinations of one or more of associated item listed, and including these groups It closes.

The specific embodiment as shown in Fig. 4~9, the plastic package die of ultra-thin multiple-level stack crystal grain product provided in this embodiment Structure, during being used in production crystal grain product, realization avoids the occurrence of excessive glue phenomenon, avoids the occurrence of starved problem, mentions High efficiency and reduce cost.

Fig. 4 and Fig. 5 are please referred to, the plastic-sealing mould structure of the ultra-thin multiple-level stack crystal grain product, including die ontology 10, mould Having ontology 10 and is equipped with several exhaust bowl assemblies, exhaust bowl assembly includes first row air drain 11 and second row air drain 12, the The depth of one air discharge duct 11 is greater than the depth of second row air drain 12.

First row air drain 11 is ladder-like arranged with second row air drain 12, and second row air drain 12 is located at second row air drain 12 Outside, so that exhaust bowl assembly changes the arrangement of die venting slot, optimize the mould stream of plastic packaging material in groove-like shallow outside interior depth Direction and flow velocity, be conducive to plastic packaging material in the flowing of mould filling and have good exhaust effect, improve exhaust stability, It improves using the efficiency in installation process, avoids the occurrence of excessive glue phenomenon；Starved problem is avoided the occurrence of, improving efficiency reduces cost.

In one embodiment, Fig. 5 to Fig. 8 is please referred to, above-mentioned first row air drain 11 and second row air drain 12 are along mold The length direction of ontology 10 is sequentially arranged.The namely arragement direction of first row air drain 11 and second row air drain 12 and mould stream side To parallel, along mould stream direction, first row air drain 11 is first set, then second row air drain 12 is arranged, to realize in exhaust structure Deep outer shallow structure, convenient for exhaust.

In one embodiment, the depth of above-mentioned first row air drain 11 is 0.15mm to 0.50mm.Preferably first exhaust The depth of slot 11 is 0.4mm.

In one embodiment, the depth of above-mentioned second row air drain 12 is 0.15mm to 0.50mm, preferably first exhaust The depth of slot 11 is 0.3mm.

In one embodiment, the width of above-mentioned first row air drain 11 is 1.0mm to 3.0mm, it is preferable that first row air drain 11 width is 0.4mm.

In one embodiment, the width of above-mentioned second row air drain 12 is 1.0mm to 3.0mm, it is preferable that second row air drain 12 width is 0.3mm.

In addition, in one embodiment, first row air drain 11 is connected to the second row air drain 12, to form stair-stepping row Air drain.

The distance between described exhaust bowl assembly of adjacent two is 8mm to 12mm.Preferably, two adjacent rows The distance between air drain component is 10mm.

Using segment design, the width of die venting slot and the size of depth are changed, changes the row of die venting slot Cloth has reached direction and the flow velocity of the mould stream of optimization plastic packaging material, has realized and be vented stable exhaust effect, realize using peace Fill simpler, conveniently, more smooth technical effect；Meeting during plastic packaging when avoiding filler material lesser using size There is excessive glue phenomenon；When avoiding the filler material using larger size, product surface will appear starved problem, realize plastic packaging production Product are of fine qualities, saved glue dosage, reduce costs while improving efficiency.Use the reason of the design of how trapezoidal air discharge duct It reads, is conducive to plastic packaging material in the flowing of mould filling and the generation of good exhaust effect.

It is vented the front wide and rear narrow design scheme of bowl assembly, there is good exhaust effect.

In one embodiment, above-mentioned exhaust bowl assembly is located at the upper surface of die ontology 10.Exhaust bowl assembly is mounted on It is easy to use on die ontology 10, it is very smooth after installation.

Referring to Fig. 9, A1, A2, A3 correspond to 11 bottom of first row air drain, 12 bottom of second row air drain and third exhaust Trench bottom is to the height between substrate, the i.e. depth of first row air drain 11, the depth of second row air drain 12 and third air discharge duct Depth.The filler particles of plastic packaging material are when being vented bowl assembly, and when by injection pressure, the filler material of different diameters is prevented It is being vented within bowl assembly, is being blocked according to trapezoidal, effectively, exhaust, it is ensured that product quality can be segmented and add in mold pressing process Work, when mold assembles, according to the product structure to be produced, the carry out efficient combination of the diameter of used filler material increases The flexibility of plastic package process reduces the cost that enterprise buys customized mold, improves production efficiency, shortens product development cycle.

In addition, barrel mounting groove is additionally provided on the die ontology 10, for installing barrel.

The plastic-sealing mould structure of above-mentioned ultra-thin multiple-level stack crystal grain product, by being in inside being arranged on die ontology 10 The exhaust bowl assembly of stepped arrangement, the depth of first row air drain 11 is greater than the component of second row air drain 12, and changes adjacent Spacing between two exhaust bowl assemblies, changes the width of die venting slot and the size of depth, changes the row of die venting slot Cloth optimizes direction and the flow velocity of the mould stream of plastic packaging material, improves exhaust stability, improves using the efficiency in installation process, avoid There is excessive glue phenomenon, avoid the occurrence of starved problem, improve production efficiency and reduces cost.

The above-mentioned technology contents that the utility model is only further illustrated with embodiment, in order to which reader is easier to understand, But the embodiments of the present invention is not represented is only limitted to this, any technology done according to the utility model extends or recreation, By the protection of the utility model.The protection scope of the utility model is subject to claims.

Claims (10)

1. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product, which is characterized in that including die ontology, the die ontology Several exhaust bowl assemblies are equipped with, the exhaust bowl assembly includes first row air drain and second row air drain, the first row The depth of air drain is greater than the depth of the second row air drain.

2. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 1, which is characterized in that described One air discharge duct is sequentially arranged with the second row air drain along the length direction of the die ontology.

3. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 2, which is characterized in that described The depth of one air discharge duct is 0.15mm to 0.50mm.

4. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 3, which is characterized in that described The depth of two air discharge ducts is 0.15mm to 0.50mm.

5. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to any one of claims 1 to 4, feature exist In the width of the first row air drain is 1.0mm to 3.0mm.

6. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 5, which is characterized in that described The width of two air discharge ducts is 1.0mm to 3.0mm.

7. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 6, which is characterized in that described One air discharge duct is connected to the second row air drain.

8. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 1, which is characterized in that adjacent The distance between two described exhaust bowl assemblies are 8mm to 12mm.

9. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 1, which is characterized in that the row Air drain component further includes third air discharge duct, and the third air discharge duct is connected to the second row air drain, and the third air discharge duct Depth be less than the second row air drain depth.

10. the plastic-sealing mould structure of ultra-thin multiple-level stack crystal grain product according to claim 1, which is characterized in that described Exhaust bowl assembly is located at the upper surface of the die ontology.