JPH0650174Y2 - Resin injection molding with structural ribs - Google Patents
Resin injection molding with structural ribsInfo
- Publication number
- JPH0650174Y2 JPH0650174Y2 JP16834588U JP16834588U JPH0650174Y2 JP H0650174 Y2 JPH0650174 Y2 JP H0650174Y2 JP 16834588 U JP16834588 U JP 16834588U JP 16834588 U JP16834588 U JP 16834588U JP H0650174 Y2 JPH0650174 Y2 JP H0650174Y2
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- resin
- pockets
- injection molding
- gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Packaging Frangible Articles (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は樹脂成形品、特に構造リブを有する樹脂射出成
形品に関する。この種の樹脂成形品は、例えば、集積回
路（IC）、大規模集積回路（LSI）等の半導体素子の製
造工程或いは完成品の運搬時等において複数個の半導体
素子を規則的に配列して収容するためのポケットを有す
る容器として都合良く使用することのできる。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a resin molded product, particularly a resin injection molded product having a structural rib. This type of resin molded product is obtained by regularly arranging a plurality of semiconductor elements during a manufacturing process of semiconductor elements such as an integrated circuit (IC) or a large-scale integrated circuit (LSI) or during transportation of a finished product. It can be conveniently used as a container with a pocket for storage.
樹脂の射出成形において、ピンポンイトゲートやサブマ
リンゲート等の制限ゲートを使用する場合、樹脂のゲー
ト切れを良くし、またゲート残りを少なくする目的で、
第３図に示すように、樹脂成形品１のゲート２の裏面側
にやや突出した樹脂溜まり３を設けることが有効であ
る。また、射出成形時のキャビティ（図示せず）内での
樹脂の流れを変更し、或いはある特定の方向に優先的に
樹脂を流す為には、第４図に示すように、樹脂成形品１
の裏面（即ち、ゲート２側）等に畝状の２次ランナー４
を設け、矢印で示した方向への樹脂の流れを促進するこ
とが有効である。In resin injection molding, when using a limiting gate such as a ping-pongite gate or a submarine gate, the purpose is to cut the resin gate well and reduce the gate residue.
As shown in FIG. 3, it is effective to provide a slightly protruding resin reservoir 3 on the back surface side of the gate 2 of the resin molded product 1. Further, in order to change the resin flow in the cavity (not shown) at the time of injection molding or to preferentially flow the resin in a specific direction, as shown in FIG.
The ridge-shaped secondary runner 4 on the back surface (that is, the gate 2 side) of the
Is provided to promote the flow of resin in the direction indicated by the arrow.
しかしながら、半導体素子を収容する容器のように、例
えば碁盤目状に配列された多数のポケットを有する構造
の樹脂成形品では、半導体素子を収容する為のポケット
の部分が製品機能として重要であり、従って、ポケット
部にゲートによる樹脂溜まり等の悪影響を与えずに、し
かも優先的に樹脂を流して、ウェルド等の樹脂充填端末
部の悪影響を与えないよう考慮する必要がある。ところ
が、従来は、この種のポケット部に悪影響を与えないで
優先的に樹脂を流することができる樹脂成形品の具体的
な構造は見当たらなかった。However, in a resin molded product having a structure having a large number of pockets arranged in a grid pattern, such as a container for housing semiconductor elements, the pocket portion for housing the semiconductor elements is important as a product function, Therefore, it is necessary to consider that the pocket is not adversely affected by resin accumulation such as a gate, and that the resin is preferentially flown so as not to adversely affect the resin-filled end portion such as weld. However, heretofore, no specific structure of a resin molded product has been found in which the resin can be preferentially flowed without adversely affecting the pocket portion of this type.
そこで、本考案は、規則的に配列された複数のポケット
を有する。射出成形によって得られる樹脂成形品におい
て、機能的に重要であるポケットの部分にゲートによる
悪影響を与えず、しかもこれらのポケット部に優先的に
樹脂を流すことのできる樹脂成形品を得ることを目的と
する。Therefore, the present invention has a plurality of regularly arranged pockets. In the resin molded product obtained by injection molding, the purpose is to obtain a resin molded product that does not adversely affect the functionally important pocket portion by the gate and allows the resin to flow preferentially into these pocket portions. And
このような課題を解決するために、本考案によれば、射
出成形により得られる樹脂成形品であって、規則的にか
つ間隔をおいて配列された複数のポケットと、該ポケッ
ト間を結びかつ互いに交差するように形成された構造リ
ブとを具備し、該構造リブの交差部に対応する成形品の
部分を射出成形時のゲ−トとしたことを特徴とする、構
造リブを有する樹脂射出成形品が提供される。In order to solve such a problem, according to the present invention, a resin molded product obtained by injection molding, wherein a plurality of pockets arranged regularly and at intervals and connecting the pockets with each other are provided. And a structural rib formed so as to intersect with each other, wherein a portion of the molded product corresponding to the intersecting portion of the structural rib is used as a gate for injection molding. Articles are provided.
このような成形品において、該成形品の表面には、規則
的に且つ間隔をおいて配列された複数のポケットが基準
の平面から窪んだ形態で形成され、裏面には、前記ポケ
ット間に窪みが形成されると共に該窪み内部にはポケッ
ト間を結びかつ互いに交差する構造リブが形成され、該
構造リブの交差部に対応する成形品の表面又は裏面を射
出成形時のゲ−トとされる。In such a molded product, on the surface of the molded product, a plurality of pockets arranged regularly and at intervals are formed in a recessed form from a reference plane, and on the back surface, recesses between the pockets are formed. And a structural rib that connects pockets and intersects each other is formed inside the recess, and the front surface or the back surface of the molded product corresponding to the intersection of the structural ribs is used as a gate for injection molding. .
また、同様の成形品において、該成形品の表面には、規
則的にかつ間隔をおいて配列された複数の***部が基準
の平面から***して形成されると共に該***部に基準平
面側に窪んだポケットが形成され、同じ表面の基準面上
には、***部間を結びかつ互いに交差する構造リブが形
成され、該構造リブの交差部に対応する成形品の表面又
は裏面を射出成形時のゲートとされる。Further, in the same molded product, a plurality of raised portions which are regularly arranged at intervals are formed on the surface of the molded product so as to be raised from a reference flat surface, and the raised portion has a reference flat surface side. A recessed pocket is formed on the same surface, and structural ribs that connect the ridges and intersect with each other are formed on the reference surface of the same surface. The gate of time.
本考案によれば、規則的にかつ間隔をおいて配列された
複数のポケット間が構造リブで結ばれているので、強度
が十分維持されるとともに、構造リブの交差部をゲート
としたので、樹脂はゲートより構造リブを経てポケット
部の周囲に流されることとなり。従って、樹脂の流れを
均一に行われ、ポケット部分を精度よく成形することが
できる。よって、成形品の剛性が向上すると共に変形を
防止することができ、精度の高い樹脂成形品を安価にか
つ多量に製造することができる。According to the present invention, since a plurality of pockets arranged regularly and at intervals are connected by a structural rib, the strength is sufficiently maintained and the intersection of the structural ribs is used as a gate. The resin will flow from the gate through the structural ribs and around the pocket. Therefore, the resin can be made to flow uniformly, and the pocket portion can be accurately molded. Therefore, the rigidity of the molded product can be improved and the deformation can be prevented, and a highly accurate resin molded product can be manufactured inexpensively and in large quantities.
以下、添付図面を参照して本考案の実施例を詳細に説明
する。Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図（ａ）及び（ｂ）は本考案の第一実施例に係る成
形品10の表面側及び裏面側の斜視図であり、この成形品
10は射出成形により樹脂で一体成形されたものある。成
形品10の表面には、第１図（ａ）に示すように、基準の
平面11から窪んだ形態の正方形のポケット12が縦横に規
則的に、例えば図示のように碁盤目状に、且つ間隔をお
いて多数配列されている。これらのポケット12は、例え
ば、その中に半導体素子（図示せず）を収容する為のも
のである。1 (a) and 1 (b) are perspective views of a front surface side and a back surface side of a molded product 10 according to the first embodiment of the present invention.
10 is a resin integrally molded by injection molding. On the surface of the molded product 10, as shown in FIG. 1 (a), square pockets 12 each having a shape recessed from a reference plane 11 are regularly arranged vertically and horizontally, for example, in a grid pattern as shown, and Many are arranged at intervals. These pockets 12 are, for example, for accommodating semiconductor elements (not shown) therein.
この成形品10を裏面より見ると、第１図（ｂ）に示すよ
うに、ポケット12に対応する正方形の部分13が基準面11
の裏面11′より***しており、隣接するポケット12間の
領域に溝ないし窪み14、15、16が形成されている。そし
て、窪み14の内部には、対角線上のポケット12間を結ぶ
ように、即ち正方形の***部13のコーナ部と対角線上の
***部13のコーナ部とを互いに結びかつ十字形に交差す
るように比較的狭い幅の構造リブ17が形成される。この
構造リブ17は基準面11の裏面11′より***部13と同じ高
さの部位まで延びている。なお、18は交差しない構造リ
ブであって、隣接する***部13の辺を延長して相互に結
ぶ補強用のものである。When this molded product 10 is viewed from the back side, as shown in FIG. 1 (b), the square portion 13 corresponding to the pocket 12 has a reference surface 11
Is raised from the back surface 11 'of the ridge, and grooves or depressions 14, 15, 16 are formed in the region between the adjacent pockets 12. Then, inside the recess 14, so as to connect between the pockets 12 on the diagonal line, that is, to connect the corner portion of the square raised portion 13 and the corner portion of the diagonal raised portion 13 to each other and cross in a cross shape. A structural rib 17 having a relatively narrow width is formed on the surface. The structural rib 17 extends from the back surface 11 ′ of the reference surface 11 to a portion at the same height as the raised portion 13. Reference numeral 18 is a structural rib that does not intersect, and is a reinforcing rib that extends the sides of adjacent raised portions 13 and connects them to each other.
構造リブ17の交差部19に対応する成形品10の表面（第１
図（ａ））又は裏面（第１図（ｂ））の部位を射出成形
時のゲート２とする。この場合のゲート２は、例えばピ
ンポイントゲートとすべきであり、１つの成形品10につ
いて複数の交差部19のすべて（但し表面又は裏面の何れ
か）をゲート２としなければならない。或いは、特定の
単数又は複数の交差部19のみをゲート２としても良い。The surface of the molded product 10 corresponding to the intersection 19 of the structural ribs 17 (first
The part of FIG. (A)) or the back surface (FIG. 1 (b)) is used as the gate 2 during injection molding. In this case, the gate 2 should be, for example, a pinpoint gate, and all the plurality of intersections 19 (either the front surface or the back surface) of one molded product 10 must be the gate 2. Alternatively, only a specific single or plural intersections 19 may be used as the gate 2.
第２図は本考案の第二実施例に係る形成品20の表面側の
斜視図であり、この成形品20も同様に射出成形により樹
脂で一体成形されたものある。成形品20の表面には、基
準の平面21から***した多数の正方形の***部23が規則
的に、例えば碁盤目状に、間隔をおいて配列され、各隆
起部23には基準平面21側へ窪んだ正方形のポケット22が
形成されている。同じ表面の基準面21上には、***部23
のコーナ部と対角線上にある***部23のコーナ部とを互
いに結びかつ十字形に交差するように比較的狭い幅の構
造リブ27が形成される。この構造リブ27は基準面21より
***部23と同じ高さの部位まで延びている。なお、28は
交差しない構造リブであって、隣接する***部23の辺を
延長して相互に結ぶ補強用のものである。また、隣接す
る***部23間の領域に溝ないし窪み24、25、26となって
いる。FIG. 2 is a perspective view of the front surface side of a molded product 20 according to the second embodiment of the present invention, and this molded product 20 is also integrally molded with resin by injection molding. On the surface of the molded product 20, a large number of square raised portions 23 raised from the reference plane 21 are regularly arranged, for example, in a grid pattern, at intervals, and each raised portion 23 has a reference plane 21 side. A recessed square pocket 22 is formed. On the reference surface 21 of the same surface, the ridge 23
The structural ribs 27 having a relatively narrow width are formed so as to connect the corner portions of the above and the corner portions of the ridges 23 on the diagonal line to each other and intersect in a cross shape. The structural rib 27 extends from the reference surface 21 to a portion at the same height as the raised portion 23. Reference numeral 28 is a structural rib that does not intersect, and is for reinforcement for extending the sides of the adjacent raised portions 23 and connecting them to each other. Grooves or depressions 24, 25, 26 are formed in the region between the adjacent raised portions 23.
構造リブ27の交差部29に対応する成形品20の表面（図示
位置）又は裏面（図示せず）の部位を射出成形時のゲー
ト２とする。この場合のゲート２は、第一実施例と同
様、ピンポイントゲートとする。A portion of the front surface (illustrated position) or the back surface (not illustrated) of the molded product 20 corresponding to the intersecting portion 29 of the structural rib 27 is used as the gate 2 at the time of injection molding. The gate 2 in this case is a pinpoint gate as in the first embodiment.
上記実施例において、樹脂の射出成形の際、金型のゲー
ト２よりキャビティ（図示せず）内へ樹脂が注入されて
射出成形が行われるが、この場合にゲート２より十字形
の交差部19、29（の表面又は裏面）へ注入され、しかも
これらの交差部19、29における構造リブ17、27或いは基
準面11、21の部分は比較的幅が狭く樹脂を優先的に流す
為の樹脂溜まり又は２次ランナーとしての機能を果た
す。即ちゲート２より射出された樹脂は構造リブ17、27
やゲート２に近い基準面11、21の部分を素早く流れ、機
能的に重要であるポケット部12、22に達する。これによ
り、樹脂の流れが均一化し、歪み等が少なくなり、成形
品全体、特にポケット部12、22の精度が向上する。In the above embodiment, when the resin is injection-molded, the resin is injected into the cavity (not shown) from the gate 2 of the mold to perform the injection-molding. In this case, the cross-shaped intersection 19 from the gate 2 is formed. , 29 (the front surface or the back surface thereof), and the structural ribs 17 and 27 or the reference surfaces 11 and 21 at the intersections 19 and 29 have a relatively small width and a resin pool for preferentially flowing the resin. Or, it functions as a secondary runner. That is, the resin injected from the gate 2 has structural ribs 17 and 27.
It quickly flows through the reference planes 11, 21 near the gate 2 and reaches the pockets 12, 22 which are functionally important. As a result, the flow of the resin is made uniform, distortion and the like are reduced, and the accuracy of the entire molded product, especially the pockets 12 and 22, is improved.
なお、上記実施例では、ポケット部12、22が碁盤目に配
列されている場合を示したが、かかるポケットは規則的
に配列されたものであれば、ポケット自体の形状や配列
形状は任意でよい。In the above embodiment, the case where the pockets 12 and 22 are arranged in a grid pattern is shown, but if the pockets are arranged regularly, the shape and arrangement of the pocket itself are arbitrary. Good.
以上に説明したように、本考案によれば、ゲートがポケ
ット部等のような機能上重要な部分にはなく、それに隣
接する構造リブの交差部にあるので、十分な強度を有
し、かつ特にポケット部のような機能上重要な部分の精
度が高い樹脂成形品が得られる。しかも、構造リブの交
差部が樹脂溜まり又は２次ランナーとしての機能を果た
すので、特別にこれらを設ける必要がなく、従って外観
上も好ましい成形品が得られる。As described above, according to the present invention, since the gate is not located at a functionally important portion such as a pocket portion but at the intersection of the structural ribs adjacent to the gate portion, it has sufficient strength, and In particular, it is possible to obtain a resin molded product with high accuracy in a functionally important portion such as a pocket portion. Moreover, since the intersecting portion of the structural ribs functions as a resin reservoir or a secondary runner, it is not necessary to provide them specially, and therefore a molded product having a good appearance can be obtained.
第１図（ａ）及び（ｂ）は本考案の構造リブを有する樹
脂射出成形品の第一実施例の正面側及び裏面側より見た
斜視図、第２図は同二実施例にかかる成形品の斜視図、
第３図は樹脂溜まりを形成した従来例、第４図は２次ラ
ンナーを設けた従来例をそれぞれ示す図である。 ２…ゲート、 10、20…樹脂射出成形品、 11、21…基準面、12、22…ポケット、 13、23…***部、 14、15、16、24、25、26…窪みないし溝部、 17、18、27、28…構造リブ、 19、29…交差部。1 (a) and 1 (b) are perspective views of a resin injection-molded product having structural ribs according to the present invention as seen from the front and back sides of a first embodiment, and FIG. 2 is a molding according to the same two embodiments. Perspective view of the item,
FIG. 3 is a diagram showing a conventional example in which a resin reservoir is formed, and FIG. 4 is a diagram showing a conventional example in which a secondary runner is provided. 2 ... Gate, 10, 20 ... Resin injection molded product, 11, 21 ... Reference plane, 12, 22 ... Pocket, 13, 23 ... Raised part, 14, 15, 16, 24, 25, 26 ... Dimple or groove part, 17 , 18, 27, 28… Structural ribs, 19, 29… Intersections.
Claims (5)
て、規則的にかつ間隔をおいて配列された複数のポケッ
トと、該ポケット間を結びかつ互いに交差するように形
成された構造リブとを具備し、該構造リブの交差部に対
応する成形品の部分を射出成形時のゲートとしたことを
特徴とする、構造リブを有する樹脂射出成形品。1. A resin molded product obtained by injection molding, comprising a plurality of pockets arranged regularly and at intervals, and structural ribs formed so as to connect the pockets and to intersect each other. And a portion of the molded product corresponding to the intersection of the structural ribs as a gate at the time of injection molding.
であって、該成形品の表面には、規則的にかつ間隔をお
いて配列された複数のポケット（12）が基準の平面（1
1）から窪んだ形態で形成され、裏面には、前記ポケッ
ト間に窪み（14）が形成されると共に該窪み内部にはポ
ケット間を結びかつ互いに交差する構造リブ（17）が形
成され、該構造リブの交差部（19）に対応する成形品の
表面又は裏面を射出成形時のゲート（２）としたことを
特徴とする、構造リブを有する樹脂射出成形品。2. A resin molded product (10) obtained by injection molding.
On the surface of the molded article, a plurality of regularly arranged and spaced pockets (12) are used as a reference plane (1
1) is formed in a recessed form. On the back surface, recesses (14) are formed between the pockets, and inside the recesses, structural ribs (17) that connect the pockets and intersect each other are formed. A resin injection molded product having a structural rib, wherein the front surface or the back surface of the molded product corresponding to the intersection (19) of the structural rib is used as a gate (2) for injection molding.
れ、かつ構造リブ（17）は対角線上に配列されたポケッ
ト間を結んでいる請求項２に記載の樹脂射出成形品。3. The resin injection-molded article according to claim 2, wherein the pockets (12) are rectangular and arranged in a grid pattern, and the structural ribs (17) connect the pockets arranged on a diagonal line.
であって、該成形品の表面には、規則的にかつ間隔をお
いて配列された複数の***部（23）が基準の平面（21）
から***して形成されると共に該***部に基準平面側に
窪んだポケット（22）が形成され、同じ表面の基準面上
には、***部間を結びかつ互いに交差する構造リブ（2
7）が形成され、該構造リブの交差部（29）に対応する
成形品の表面又は裏面を射出成形時のゲート（２）とし
たことを特徴とする、構造リブを有する樹脂射出成形
品。4. A resin molded product (20) obtained by injection molding.
The surface of the molded article has a plurality of raised portions (23) arranged at regular intervals with a reference plane (21).
And a pocket (22) recessed toward the reference plane side is formed in the raised portion, and a structural rib (2) connecting the raised portions and intersecting with each other is formed on the reference surface of the same surface.
7) is formed, and the front surface or the back surface of the molded product corresponding to the intersection (29) of the structural rib is used as the gate (2) for injection molding, and the resin injection molded product having the structural rib.
矩形で碁盤目状に配列され、かつ構造リブ（27）は対角
線上に配列された***部間を結んでいる請求項４に記載
の樹脂射出成形品。5. The ridges (23) having the pockets (22) are rectangular and arranged in a grid pattern, and the structural ribs (27) connect the ridges arranged diagonally. The resin injection-molded product described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16834588U JPH0650174Y2 (en) | 1988-12-28 | 1988-12-28 | Resin injection molding with structural ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16834588U JPH0650174Y2 (en) | 1988-12-28 | 1988-12-28 | Resin injection molding with structural ribs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0288723U JPH0288723U (en) | 1990-07-13 |
| JPH0650174Y2 true JPH0650174Y2 (en) | 1994-12-21 |
Family
ID=31457444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16834588U Expired - Fee Related JPH0650174Y2 (en) | 1988-12-28 | 1988-12-28 | Resin injection molding with structural ribs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650174Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009196289A (en) * | 2008-02-25 | 2009-09-03 | Nippon Plast Co Ltd | Injection molding die and resin molded product |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7281062B2 (en) * | 2019-04-11 | 2023-05-25 | 株式会社 ダイサン | Resin molded product and method for manufacturing resin molded product |
-
1988
- 1988-12-28 JP JP16834588U patent/JPH0650174Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009196289A (en) * | 2008-02-25 | 2009-09-03 | Nippon Plast Co Ltd | Injection molding die and resin molded product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0288723U (en) | 1990-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0650174Y2 (en) | Resin injection molding with structural ribs | |
| JPH0379317A (en) | Plastic molded product | |
| JPH05185470A (en) | Mold for injection molding | |
| JP3035827B2 (en) | Integrally molded synthetic resin pallet and molding method thereof | |
| JP2664945B2 (en) | Resin sealing mold for semiconductor device | |
| JPH059151Y2 (en) | ||
| JPH09131767A (en) | Molding die of resin case for electronic parts | |
| JPH0538892Y2 (en) | ||
| CN109397626A (en) | The plastic package die of curved touch screen and the manufacturing method of curved touch screen | |
| JPS5961923U (en) | injection mold | |
| US5153799A (en) | Magnetic tape cassette having bridged guide ribs | |
| JPS59187425U (en) | injection mold | |
| JPH058107Y2 (en) | ||
| JPS5826107Y2 (en) | Product retention pin | |
| CN206999477U (en) | A kind of anti-deforming structure of injecting products | |
| JPH0454630Y2 (en) | ||
| JPH0639387Y2 (en) | Structure to prevent incorrect card insertion in the card insertion slot | |
| JPS5940183Y2 (en) | board equipment | |
| JPH02206407A (en) | Partition plate and manufacture thereof | |
| JPH0325941Y2 (en) | ||
| JPS646541Y2 (en) | ||
| JPH0723963Y2 (en) | Mold for sealing container of hybrid integrated circuit | |
| JPS60175612U (en) | Resin mold equipment | |
| JPS6222343Y2 (en) | ||
| JPH02222Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |