JPS5871137A - Structure of injection metal mold - Google Patents
Structure of injection metal moldInfo
- Publication number
- JPS5871137A JPS5871137A JP16980981A JP16980981A JPS5871137A JP S5871137 A JPS5871137 A JP S5871137A JP 16980981 A JP16980981 A JP 16980981A JP 16980981 A JP16980981 A JP 16980981A JP S5871137 A JPS5871137 A JP S5871137A
- Authority
- JP
- Japan
- Prior art keywords
- product
- mold
- injection
- synthetic resin
- product shape
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/38—Cutting-off equipment for sprues or ingates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 構造に関するものである。[Detailed description of the invention] It's about structure.
第１図は従来の代表的な射出成形金型構造の主要断面図
であり、図中、上金型１と下金型２とが機械的に閉され
ている状態で示されている。３はバーテングラインであ
り、このバーテングライン６を境にして機械的に」一金
型１と下金型２とが上下に分離される構造をとる。FIG. 1 is a main cross-sectional view of a typical conventional injection mold structure, in which an upper mold 1 and a lower mold 2 are shown in a mechanically closed state. Reference numeral 3 denotes a bartending line, and the structure is such that the one mold 1 and the lower mold 2 are vertically separated from each other mechanically with this bartending line 6 as a boundary.
４ａ及び４ｂはバーテングライン６を境として上金型１
及び下金型２のそれぞれに形成された製品形状彫込部、
５は合成樹脂材料を注入するため、上金型１に形成され
た案内部（スプール）であり、その先端には注入口（ゲ
ート）６が形成されている。4a and 4b are the upper mold 1 with the bartending line 6 as the boundary.
and a product shape carved part formed in each of the lower mold 2,
Reference numeral 5 denotes a guide portion (spool) formed in the upper mold 1 for injecting the synthetic resin material, and an injection port (gate) 6 is formed at the tip thereof.
７は下金型２に装置された押出しビンであり、製品形状
彫込部４ａ，４ｂ内に射出された合成樹脂材料が冷却さ
れた後、機械的に上金型１と下金型２とが」一下に分離
して開いた状態で、図中矢印方向への押出しビン７の押
出しによって製品（射出ｅ形品）８が製品形状彫込部４
ｂから押出されろものである。しかも上金型１と下金型
２が開く直前で案内部５内に留っている合成樹脂材料部
分は、製品形状彫込部４ａ、４ｂ内の製品すなわち射出
底形された合成樹脂材料部分と連結して部分が、案内部
５ （Ｉｌｌからの機械画引ばり力により注入１］６伺
近で」−下に引きちぎら」１．ろことになる。しかし−
に連の様な射出成形金型の合成樹脂４Ｕ’ １１注入方
法の場合には、どうしても注入口６の位置は製品８の側
面方向に設けろ車が出来ず、製品８０表向上に設けねば
ならず、その結果、第２１ツ１の４ｊｌｌ１面図で示す
如く、製品８の表面には、７１−人１−１１６ （・１
近で上下に引きちぎられろことによる合成樹脂月利の突
出部８ａが残ることになる。又、この突出部８ａをナイ
フ等で削除する面倒な後処理を必要とする等の欠点があ
った。7 is an extrusion bottle installed in the lower mold 2, and after the synthetic resin material injected into the product shape engravings 4a and 4b is cooled, it is mechanically pressed into the upper mold 1 and the lower mold 2. is separated and opened, the product (injection e-shaped product) 8 is pushed out in the direction of the arrow in the figure by the push-out bottle 7 into the product-shaped carved part 4.
It is extruded from b. Moreover, the synthetic resin material portion remaining in the guide portion 5 just before the upper mold 1 and the lower mold 2 are opened is the synthetic resin material portion of the product in the product shape engraving portions 4a and 4b, that is, the injection bottom-shaped synthetic resin material portion. The part that is connected to the guide part 5 (injection 1) due to the mechanical pulling force from the guide part 5 (Ill) will be torn downward when it approaches 1. However, -
In the case of the synthetic resin 4U' 11 injection method for injection molds such as Niren, the position of the injection port 6 cannot be placed in the side direction of the product 8, so it must be placed in the upper part of the product 80. , As a result, as shown in the 4jll front view of the 21st product 1, the surface of the product 8 has 71-people 1-116 (・1
A protruding portion 8a of the synthetic resin will remain as a result of being torn off vertically near the top. Further, there is a drawback that a troublesome post-processing process is required to remove the protruding portion 8a with a knife or the like.
本発明の目的は前記従来の欠点をＷ（／ｌ′Ｉｌ〜注入
口に対応する射出成形製品表面に突出部か残ら〕、【い
ように１〜だ射出成形金型構造を］ｊｌ“供すイ）こと
である。The purpose of the present invention is to solve the above-mentioned drawbacks of the prior art, such as the problem of leaving a protrusion on the surface of the injection molded product corresponding to the inlet, and b) That is.
第３図は本発明σ）実施例を示ず射出成形金型構造の主
要断面図で・ル）す、図中１−金型９と下金型１０とは
機械的に閉されている状態で示さ」している。１１はバ
ーテングラインであり、このバーテングライン１１を境
にして機械的に１−金型９と下金型１０が上下に分離さ
れろ構造をとる。１２＆及び１２ｂはバーテングライン
１１を境として上金型９及び下金型１０のそれぞれに形
成された製品形状彫込部、１３は合成樹脂材料を注入す
るため、」二金型９に形成された案内部（スプール）で
あり、その先端尾は１４の注入口（ゲート）が形成され
ている。１５は下金型１０の穴１０ａに圧入固定されて
いるゲートビンであり、前記注入口１４と対向するゲー
Ｉ・ビン１５の先端々面から製品形状彫込部１２ａの側
面方向と隣接するゲートビン１５の側面に向って斜めに
形成された連結穴１５ａを備えている。しかも上金型９
にはゲートビン１５の」二部を精密嵌合状態で挿入する
ためのゲートビン彫込部１２Ｃが形成されている。Figure 3 is a main cross-sectional view of the injection mold structure without showing an example of the present invention.In the figure, 1-mold 9 and lower mold 10 are mechanically closed. It is indicated by ``. Reference numeral 11 denotes a bartending line, and the mold 9 and the lower mold 10 are mechanically separated vertically by this bartending line 11. 12& and 12b are product shape carved parts formed in each of the upper mold 9 and the lower mold 10 with the bartending line 11 as a boundary; 13 is a product shape carved part formed in the second mold 9 for injecting synthetic resin material. It is a guide part (spool), and 14 injection ports (gates) are formed at its tip and tail. Reference numeral 15 denotes a gate bin that is press-fitted into the hole 10a of the lower mold 10, and the gate bin 15 is adjacent to the side surface of the product shape carved part 12a from the top end of the gate bin 15 facing the injection port 14. The connecting hole 15a is formed diagonally toward the side surface of the connecting hole 15a. Moreover, upper mold 9
A gate bin carved part 12C is formed in the gate bin 15 for inserting the two parts of the gate bin 15 in a precisely fitted state.
次に上述した射出成形金型による製造工程について説明
する。Next, a manufacturing process using the injection mold described above will be explained.
先ず、案内部１６側から注入口１４に向けて熔解した合
成樹脂材料が注入されると、この熔解した合成樹脂制別
は注入口１４からゲートビン１５の連結穴１５ａを通っ
て製品形状彫込部１２ａ１１２ｂ内に射出されろことに
なる。First, when the molten synthetic resin material is injected from the guide part 16 side toward the injection port 14, the molten synthetic resin material passes from the injection port 14 through the connection hole 15a of the gate bin 15 to the product shape engraving part. 12a and 112b.
しかるのち、製品形状彫込部１２ａ及び１２ｂの内部で
合成樹脂相］」部分が冷却して固体状態となってから、
次に、案内部１６に留っている合成樹脂相４４部分（固
体状態）に外部か１′−、の機械画引っばり力を与えろ
事により、注入口１４伺近におけろ合成樹脂祠料部分は
１−下に引きちぎられろ事になる。After that, the synthetic resin phase inside the product shape carved parts 12a and 12b cools down to a solid state.
Next, by applying an external mechanical pulling force of 1' to the synthetic resin phase 44 portion (solid state) remaining in the guide portion 16, the synthetic resin abrasive is placed near the injection port 14. The part will have to be torn 1-down.
しかし、次に上金型９と下金型１０とを上下に分離した
状態で、図中矢印方向への押出しビン１６の押出しによ
り、製品１７は製品形状彫込部１２ｂから押出されると
同時に製品１７と該製品１７の側面と一体に連結されて
いる連結穴１５ａ内の合成樹脂材料部分とが前述押出し
による力によって切断されろことになる。However, next, with the upper mold 9 and the lower mold 10 separated vertically, the extrusion bottle 16 is pushed in the direction of the arrow in the figure, and the product 17 is simultaneously extruded from the product shape carved part 12b. The product 17 and the synthetic resin material portion in the connecting hole 15a that is integrally connected to the side surface of the product 17 are cut by the force caused by the extrusion described above.
以上の如く、本発明の射出成形金１１ｉ１１構造によれ
ば、ゲートビンにより製品の側面力向（すなわち製品形
状彫込部側面）に対して一種の注入口（連結穴）を設け
ろ事が出来、しかもこれにより、射出成形工程の途中で
製品の側面部分と一体に連結された突出部（すなわち連
結穴内の合成樹脂材オ」部分）が自動的に切断されろた
め、従来の如き射出成形後金型内から取り出された製品
の表面に形成された突出部を削除するという非常に面倒
な後処理を不要とし、犬ｌ］なコストダウンが達成され
ろ。尚１本実施例では下金型にゲートビンを圧入固定し
ていたが、他の実施例として注入口を下金型に設は且つ
上金型に押出しビン及びゲートビンを設けてもよい。As described above, according to the injection molded metal 11i11 structure of the present invention, it is possible to provide a type of injection port (connection hole) in the side force direction of the product (i.e., the side surface of the product shape carved part) using the gate bin, and As a result, the protrusion that is integrally connected to the side surface of the product (i.e., the synthetic resin material inside the connecting hole) is automatically cut off during the injection molding process, so that the mold is not molded after injection molding as in the case of conventional injection molding. There is no need for extremely troublesome post-processing of removing protrusions formed on the surface of the product taken out from the inside, and a significant cost reduction can be achieved. In this embodiment, the gate bottle was press-fitted into the lower mold, but in other embodiments, the injection port may be provided in the lower mold, and the extrusion bottle and the gate bottle may be provided in the upper mold.
第１図は従来の射出成形金型構造を余す断面図、第２図
は従来の削出成形製品表面上に突出部が形成された状態
を示す断面図、第３図は本発明の実施例を示す射出成形
金型構造の断面図である。Fig. 1 is a cross-sectional view of a conventional injection mold structure, Fig. 2 is a cross-sectional view showing a state in which protrusions are formed on the surface of a conventional cut-molded product, and Fig. 3 is an embodiment of the present invention. FIG. 2 is a cross-sectional view of the injection mold structure.
Claims (1)
形成されてなる上金型及び下金型を有し、該止金型又は
下金型の一方に、各前記製品形状彫込部に向って合成樹
脂材料を注入するための案内部を形成し、該案内部の先
端に注入口を備えた射出成形金型構造に於いて、前記注
入口と前記製品形状彫込部とに隣接してゲートビンを設
け、該ゲートピンは前記下金型又は上金型の一方に固定
され、前記注入口と対向する前記ゲートピンの先端端面
から斜めに形成された連結穴を具備している事を特徴と
する射出成形金型構造。It has an upper mold and a lower mold each having a product shape carved part formed with the bartending line as a boundary, and one of the stopper mold or the lower mold has a composite part facing each of the product shape carved parts. In an injection mold structure in which a guide part for injecting a resin material is formed and an injection port is provided at the tip of the guide part, a gate bin is provided adjacent to the injection port and the product shape carved part. Injection molding, wherein the gate pin is fixed to one of the lower mold or the upper mold, and has a connecting hole formed obliquely from a distal end surface of the gate pin facing the injection port. Mold structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16980981A JPS5871137A (en) | 1981-10-23 | 1981-10-23 | Structure of injection metal mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16980981A JPS5871137A (en) | 1981-10-23 | 1981-10-23 | Structure of injection metal mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5871137A true JPS5871137A (en) | 1983-04-27 |
Family
ID=15893293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16980981A Pending JPS5871137A (en) | 1981-10-23 | 1981-10-23 | Structure of injection metal mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5871137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113828A (en) * | 1997-03-24 | 2000-09-05 | Feick; Murray L. | Method of injection molding severing a looped gate passage |
-
1981
- 1981-10-23 JP JP16980981A patent/JPS5871137A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113828A (en) * | 1997-03-24 | 2000-09-05 | Feick; Murray L. | Method of injection molding severing a looped gate passage |
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