CN202003967U - Packaging die structure - Google Patents
Packaging die structure Download PDFInfo
- Publication number
- CN202003967U CN202003967U CN2011200434657U CN201120043465U CN202003967U CN 202003967 U CN202003967 U CN 202003967U CN 2011200434657 U CN2011200434657 U CN 2011200434657U CN 201120043465 U CN201120043465 U CN 201120043465U CN 202003967 U CN202003967 U CN 202003967U
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- Prior art keywords
- face
- barrel
- internal
- chamber
- injecting glue
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Abstract
The utility model discloses a packaging die structure, which comprises a first die and a second die. The second die correspondingly matches with the first die and is provided with an adhesive injecting chamber, a feed barrel chamber and a feed barrel. The adhesive injecting chamber is disposed on a joint surface of the second die with the first die, the feed barrel chamber penetrates through the adhesive injecting chamber to the outer surface of the second die and consists of a first inner wall surface and a second inner wall surface, the first inner wall surface is close to the adhesive injecting chamber, the second inner wall surface is far away from the adhesive injecting chamber, and the outer peripheral surface of the feed barrel is in close fit with the first inner wall surface and is in sliding fit with the second inner wall surface. The feed barrel can be conveniently detached by the aid of the packaging die structure, the inner diameter of the adhesive injecting chamber can be reduced further, accordingly the volume of wasted adhesive in the adhesive injecting chamber is decreased, and wastage of packaging adhesive is reduced.
Description
[technical field]
The utility model relates to a kind of encapsulating mould structure, particularly relates to a kind of encapsulating mould structure that reduces the scrap rubber volume and be convenient to dismantle barrel.
[background technology]
In the conventional semiconductor packages operation, the general mode of passing through injection is with sealant covers semiconductor chip and lead frame, so that chip and associated contacts thereof can be isolated with external environment condition, plays the purpose of protection chip and contact and integrated assembly.
Please refer to shown in Fig. 1,2A, the 2B and 3, Fig. 1 discloses a kind of local top view of existing encapsulating mould structure; Fig. 2 A and Fig. 2 B disclose a kind of sectional view of existing encapsulating mould structure, show that sealing is pressed into forward and backward state; Fig. 3 discloses a kind of sectional view of second mold of existing encapsulating mould structure, shows the state that splits out barrel.
Shown in Fig. 1,2A, 2B and 3, a kind of existing encapsulating mould structure 1 comprises one first mold 11 and one second mold 12, described second mold 12 and described first mold, 11 corresponding matching.Wherein, Fig. 1 shows the top view of described second mold 12, and described encapsulating mould structure 1 can be pressed into each die cavity 17 respectively with sealing by the separate system that is arranged in central authorities.Shown in Fig. 2 A and Fig. 2 B, described second mold, 12 correspondences are located at the below of described first mold 11, are easy to understand in order to make drawing, and Fig. 2 A and Fig. 2 B omit and show the structure that respectively branches to each die cavity.Described second mold 12 is provided with an injecting glue chamber 13 and a barrel chamber 14, described injecting glue chamber 13 is located on the land area of described second mold 12 and described first mold 11, and described injecting glue chamber 13 is the empty chambers by the indoor wall formation that 12a defines of an injecting glue of described second mold 12.Described barrel chamber 14 is the empty chambers by an internal face formation that 12b defines of described second mold 12, and described barrel chamber 14 is run through the described injecting glue of connection chamber 13 and (descend) surface to described second mold 12.
In addition, described encapsulating mould structure 1 comprises a barrel 15 in addition, described barrel 15 has an outer peripheral face (not indicating) and a plup inlet (not indicating), and described barrel 15 is located within the described barrel chamber 14, and the internal face 12b of the outer peripheral face of described barrel 15 and described second mold 12 is tight fit.Other has a depression bar 16 movable in the plup inlet of described barrel 15, and after a sealing (molding compound) 20 entered described encapsulating mould structure 1, described depression bar 16 was positioned at lower position (Fig. 2 A) before this; Then, described depression bar 16 can be pressed into semiconductor chip (not illustrating) and the lead frame (not illustrating) that is positioned at each die cavity 17 in each die cavity 17 (as the die cavity 17 of Fig. 1) with encapsulation with described sealing 20 by the shunting structure to the direction (making progress) of first mold 11.At last, described injecting glue chamber 13 can stay the part of a scrap rubber (as Fig. 2 B) of described sealing 20.
In existing encapsulating mould structure 1, can not overflow in order to ensure described sealing 20, therefore the outer peripheral face of described barrel 15 and the internal face 12b of described barrel chamber 14 must be friction tight.As shown in Figure 3, also can split out described barrel 15 where necessary by a dismounting post 21.Described dismounting post 21 generally has a flange 21a, and when described dismounting post 21 inserted described barrel 15, described flange 21a can be connected to the end of described barrel 15, in order to the application of force described barrel 15 is pounded out downwards.Therefore, the diameter of described injecting glue chamber 13 must be many greater than the pan feeding aperture of described barrel 15, for example greater than 6 millimeters in the pan feeding aperture (mm) of described barrel 15, so that the end of described barrel 15 can be designed to such an extent that have enough width and space and come flange 21a butt for institute's dismounting post 21.Yet this measure causes in existing encapsulating mould structure 1, described barrel 15 because with described barrel chamber 14 be that full inner peripheral surface is friction tight, therefore be difficult for being pounded out by described dismounting post 21.In addition,, make the volume of described scrap rubber also can't dwindle again, thereby form the waste of material of described sealing 20 because the diameter of described injecting glue chamber 13 can't reduce again.
So, be necessary to provide a kind of encapsulating mould structure, to solve the existing in prior technology problem.
[utility model content]
Main purpose of the present utility model provides a kind of encapsulating mould structure, and the outer peripheral face of its barrel and first internal face are tight fit and are sliding fit with second internal face.Therefore make barrel can easily tear open, and can further dwindle the volume of scrap rubber, thereby reduced the waste of sealing.
For reaching above-mentioned purpose, the utility model provides a kind of encapsulating mould structure, and it comprises:
One first mold;
One second mold is with the described first mold corresponding matching; Wherein an injecting glue chamber is located on the land area of described second mold and described first mold, is the empty chamber by an injecting glue locular wall formation that face defines; And one the barrel chamber run through and be communicated with the outer surface of described injecting glue chamber to described second mold, described barrel chamber is by one near one first internal face of described injecting glue chamber and away from the empty chamber of one second formation that internal face defines of described injecting glue chamber, and the internal diameter of described second internal face is slightly larger than the internal diameter of described first internal face; And
One barrel is located within the described barrel chamber, and has an outer peripheral face and a plup inlet, and the outer peripheral face of described barrel and described first internal face are tight fit, and the outer peripheral face of described barrel and described second internal face are sliding fit.
Among the embodiment in the utility model, described injecting glue chamber is near the internal diameter of described first internal face internal diameter less than described first internal face, and described barrel is connected on the inner face between described first internal face and the described injecting glue locular wall face.
Among the embodiment in the utility model, be provided with a grooving with described inner face junction on described first internal face.
Among the embodiment in the utility model, the internal diameter of close described first internal face in described injecting glue chamber is greater than the internal diameter of the plup inlet of described barrel.
Among the embodiment in the utility model, the internal diameter of close described first internal face in described injecting glue chamber is greater than 2 millimeters of the internal diameters (mm) of the plup inlet of described barrel.
For reaching above-mentioned another purpose, the utility model provides a kind of encapsulating mould structure, and it comprises:
One first mold;
One second mold is with the described first mold corresponding matching; Wherein one insert and be approximately on the land area of described second mold of being embedded at of hollow annular and described first mold, described inserting comprises two stepped internal diameters, form an injecting glue chamber interior walls near the single order of described land area, form one first internal face away from the single order of described land area; Wherein an injecting glue chamber is the empty chamber by described injecting glue locular wall formation that face defines of inserting; An and barrel chamber, run through and be communicated with the outer surface of described injecting glue chamber to described second mold, described barrel chamber is by being connected in the empty chamber of one second formation that internal face defines on described insert first internal face and the described barrel chamber, and the internal diameter of described second internal face is slightly larger than the internal diameter of described first internal face of inserting; And
One barrel, be located within first internal face and second internal face on the described barrel chamber on described the inserting, have an outer peripheral face and a plup inlet, the outer peripheral face of described barrel and described first internal face are tight fit, and the outer peripheral face of described barrel and described second internal face are sliding fit.
Among the embodiment in the utility model, described injecting glue chamber is near the internal diameter of described first internal face internal diameter less than described first internal face of inserting, and described barrel is connected on described first internal face and the inner face between the described injecting glue locular wall face on described the inserting.
Among the embodiment in the utility model, be provided with a grooving with described inner face junction on described first internal face on described the inserting.
Among the embodiment in the utility model, the internal diameter of close described first internal face in described injecting glue chamber is greater than the internal diameter of the plup inlet of described barrel.
Among the embodiment in the utility model, the internal diameter of close described first internal face in described injecting glue chamber is greater than 2 millimeters of the internal diameters (mm) of the plup inlet of described barrel.
[description of drawings]
Fig. 1: a kind of local top view of existing encapsulating mould structure.
Fig. 2 A: a kind of sectional view of existing encapsulating mould structure shows that sealing is pressed into state before.
Fig. 2 B: a kind of sectional view of existing encapsulating mould structure shows that sealing is pressed into state afterwards.
Fig. 3: a kind of sectional view of second mold of existing encapsulating mould structure shows the state that splits out barrel.
Fig. 4: the sectional view of the encapsulating mould structure of the utility model first embodiment.
Fig. 5: the sectional view of second mold of the encapsulating mould structure of the utility model first embodiment shows the state that splits out barrel.
Fig. 6: the sectional view of the encapsulating mould structure of the utility model second embodiment.
[embodiment]
For allowing the utility model above-mentioned purpose, feature and advantage become apparent, the utility model preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Please refer to shown in Figure 4ly, it discloses the sectional view of encapsulating mould structure of the utility model first embodiment.A kind of encapsulating mould structure 3 mainly comprises one first mold 31 and one second mold 32, described second mold 32 and described first mold, 31 corresponding matching and be located at the below of described first mold 31.As shown in Figure 4, be easy to understand in order to make drawing, Fig. 4 omits and shows the structure that branches to each die cavity.Described encapsulating mould structure 3 is provided with an injecting glue chamber 33 and a barrel chamber 34 in addition in described second mold 32.Described injecting glue chamber 33 is to be located on the land area of described second mold 32 and described first mold 31, described injecting glue chamber 33 is the empty chambers by an injecting glue locular wall face formation that 32a defines of described second mold 32, and the demoulding for convenience, described injecting glue locular wall face 32a generally is outward-dipping design.In addition, described barrel chamber 34 is to run through described injecting glue chamber 33 (to descend) surface to described second mold 32, it is near one first internal face 32b of described injecting glue chamber 33 and away from the empty chamber of one second internal face formation that 32c defines of described injecting glue chamber 33 by one, wherein, the internal diameter of the described second internal face 32c is slightly larger than the internal diameter of the described first internal face 32b.
Moreover, described encapsulating mould structure 3 also comprises a barrel 35, described barrel 35 has an outer peripheral face (not indicating) and a plup inlet (not indicating), described barrel 35 is located within the described barrel chamber 34, the first internal face 32b of the outer peripheral face of described barrel 35 and described barrel chamber 34 is tight fit, and the second internal face 32c of the outer peripheral face of described barrel 34 and described barrel chamber 34 is sliding fit.
Preferably, the internal diameter of described injecting glue chamber 33 (injecting glue locular wall face 32a diameter) is less than the internal diameter of the described first internal face 32b, and described barrel 35 is connected on the inner face between described first internal face 32b and the described injecting glue locular wall face 32a (indicating).Therefore, when sealing enters described barrel 35, be positioned at the semiconductor chip and the lead frame of each die cavity in can described sealing can being pressed into by the shunting structure by a depression bar with encapsulation, and when encapsulation was finished, described sealing formed a part that is the scrap rubber (not illustrating) of oblate column approximately in described injecting glue chamber 33.This part please refer to the description of background technology, no longer repeats at this.Therefore, in the encapsulating mould structure 3 of the utility model first embodiment, because the described barrel 35 and second mold 32 push against, the internal face 32b of the outer peripheral face of particularly described barrel 35 and described barrel chamber 34 is friction tight, and therefore described sealing can not form excessive glue from here.
Preferably, the internal diameter of described injecting glue chamber 33 (injecting glue locular wall face 32a diameter) can be pulled down described barrel 35 (as shown in Figure 5) by a dismounting post 41 where necessary greater than the internal diameter of the plup inlet of described barrel 35.Described dismounting post 41 has a flange 41a, and when described dismounting post 41 inserted described barrel 35, described flange 41a can be connected to the end of described barrel 35 and with the application of force described barrel 35 be pounded out downwards.Because, only some is friction tight (preventing excessive glue) with the internal face 32b of described barrel chamber 34 to the outer peripheral face of described barrel 35, and the second internal face 32c of described barrel 34 most outer peripheral faces and described barrel chamber 34 is sliding fits, and therefore described barrel 34 is pounded out by described dismounting post 41 than being easier to compared to the existing structure in the background technology.Also therefore, the internal diameter of described in design injecting glue chamber 33 can dwindle as much as possible, and for example, the internal diameter of described injecting glue chamber 33 is greater than 2 millimeters of the internal diameters (mm) of the plup inlet of described barrel 35.And because the internal diameter of described injecting glue chamber 33 has reduced, therefore the volume of described scrap rubber also can further dwindle, thereby has reduced the waste of material of sealing.
Moreover the described first internal face 32b of the encapsulating mould structure 3 of the utility model first embodiment goes up and is being provided with a grooving 32d in addition with described inner face junction.Described grooving 32d is based on the formed grooving of making on the right angle of convenience, can not influence the state of the close-fitting of described barrel 35.
Referring again to shown in Figure 6, the sectional view of the encapsulating mould of the utility model second embodiment structure.The encapsulating mould of the utility model second embodiment is constructed the encapsulating mould structure of similar the utility model first embodiment, therefore continue to use identical element numbers and title, but difference is between the two: the encapsulating mould structure of the utility model second embodiment has 320 the design of inserting in addition.Described inserting 320 is on the land area of described second mold 32 of being embedded at of hollow annular and described first mold 31 approximately, described inserting 320 comprises two stepped internal diameters, wherein form an injecting glue locular wall face 320a and form described injecting glue chamber 33, form one first internal face 320b away from second rank of described land area near first rank of described land area.
In addition, in the present embodiment, the outer surface of described injecting glue chamber 33 to described second mold 32 run through in described barrel chamber 34, described barrel chamber 34 is the empty chambers by the one second internal face formation that 32c defines that is connected in the described 320 first internal face 320b that insert, and the internal diameter of the described second internal face 32c is slightly larger than the internal diameter of the described 320 first internal face 320b that insert.Described barrel 35 is located within the described first internal face 320b and the second internal face 32c on the described barrel chamber 34 that inserts on 320, the outer peripheral face of described barrel 35 and the described first internal face 320b are tight fit, and the outer peripheral face of described barrel 35 and the described second internal face 32c are sliding fit.
Therefore, encapsulating mould structure 3 compared to the utility model first embodiment, the encapsulating mould structure 3 of the utility model second embodiment can have identical functions: provide described barrel 35 conveniently to pull down, and can dwindle the volume of described scrap rubber as much as possible, reduced the waste of sealing.And, because described 320 the design of inserting, when the described first internal face 320b and described barrel 35 when use causes wearing and tearing for a long time, can not need to change whole second mold 32, only need to replace described inserting and 320 get final product, can effectively save whole manufacturing cost.
In sum, in existing encapsulating mould structure, barrel is not easy to be split out, and the volume of scrap rubber can't dwindle, thereby forms the waste of sealing.The utility model is tight fit by described barrel 35 outer peripheral faces and the described first internal face 32b but is the design of sliding fit with the described second internal face 32c, can make described barrel 15 can easily tear open, and further dwindled the internal diameter of described injecting glue chamber 33, therefore dwindle the volume of described scrap rubber, thereby reduced the waste of material of sealing.
The utility model is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present utility model.Must be pointed out that disclosed embodiment does not limit scope of the present utility model.On the contrary, being contained in the spirit of claims and the modification and impartial setting of scope is included in the scope of the present utility model.
Claims (10)
1. an encapsulating mould is constructed, and it is characterized in that it comprises:
One first mold;
One second mold is with the described first mold corresponding matching; Wherein an injecting glue chamber is located on the land area of described second mold and described first mold, is by an injecting glue locular wall formation that face defines; And one the barrel chamber run through and be communicated with the outer surface of described injecting glue chamber to described second mold, described barrel chamber is by one near one first internal face of described injecting glue chamber and away from one second formation that internal face defines of described injecting glue chamber, and the internal diameter of described second internal face is greater than the internal diameter of described first internal face; And
One barrel is located within the described barrel chamber, and has an outer peripheral face and a plup inlet, and the outer peripheral face of described barrel and described first internal face are tight fit, and the outer peripheral face of described barrel and described second internal face are sliding fit.
2. encapsulating mould structure as claimed in claim 1, it is characterized in that: described injecting glue chamber is near the internal diameter of described first internal face internal diameter less than described first internal face, and described barrel is connected on the inner face between described first internal face and the described injecting glue locular wall face.
3. encapsulating mould structure as claimed in claim 2 is characterized in that: be provided with a grooving in the junction with described inner face on described first internal face.
4. encapsulating mould structure as claimed in claim 2 is characterized in that: the internal diameter of close described first internal face in described injecting glue chamber is greater than the internal diameter of the plup inlet of described barrel.
5. encapsulating mould as claimed in claim 4 structure is characterized in that: described injecting glue chamber near the internal diameter of described first internal face greater than 2 millimeters of the internal diameters of the plup inlet of described barrel.
6. an encapsulating mould is constructed, and it is characterized in that it comprises:
One first mold;
One second mold is with the described first mold corresponding matching;
One inserts, and is on the land area of described second mold of being embedded at of hollow annular and described first mold, and described inserting comprises an injecting glue chamber interior walls and first internal face away from described land area near described land area; Wherein an injecting glue chamber is the injecting glue locular wall formation that face defines of inserting by described; And one the barrel chamber run through and be communicated with the outer surface of described injecting glue chamber to described second mold, described barrel chamber is that the internal diameter of described second internal face is greater than the internal diameter of described first internal face of inserting by one second formation that internal face defines on described first internal face of inserting and the described barrel chamber; And
One barrel, be located in first internal face and second internal face on the described barrel chamber on described the inserting, and have an outer peripheral face and a plup inlet, and the outer peripheral face of described barrel and described first internal face are tight fit, and the outer peripheral face of described barrel and described second internal face are sliding fit.
7. encapsulating mould structure as claimed in claim 6, it is characterized in that: described injecting glue chamber is near the internal diameter of described first internal face internal diameter less than described first internal face of inserting, and described barrel is connected on described first internal face and the inner face between the described injecting glue locular wall face on described the inserting.
8. encapsulating mould structure as claimed in claim 7 is characterized in that: be provided with a grooving with described inner face junction on described first internal face on described the inserting.
9. encapsulating mould structure as claimed in claim 7 is characterized in that: the internal diameter of close described first internal face in described injecting glue chamber is greater than the internal diameter of the plup inlet of described barrel.
10. encapsulating mould as claimed in claim 9 structure is characterized in that: described injecting glue chamber near the internal diameter of described first internal face greater than 2 millimeters of the internal diameters of the plup inlet of described barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200434657U CN202003967U (en) | 2011-02-22 | 2011-02-22 | Packaging die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200434657U CN202003967U (en) | 2011-02-22 | 2011-02-22 | Packaging die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003967U true CN202003967U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200434657U Expired - Lifetime CN202003967U (en) | 2011-02-22 | 2011-02-22 | Packaging die structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900945A (en) * | 2018-09-14 | 2020-03-24 | Oppo（重庆）智能科技有限公司 | Manufacturing method of structural member, mold, shell and electronic equipment |
-
2011
- 2011-02-22 CN CN2011200434657U patent/CN202003967U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900945A (en) * | 2018-09-14 | 2020-03-24 | Oppo（重庆）智能科技有限公司 | Manufacturing method of structural member, mold, shell and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
|
| CX01 | Expiry of patent term |