JPH01198317A - Manufacture of resin mold for injection molding - Google Patents
Manufacture of resin mold for injection moldingInfo
- Publication number
- JPH01198317A JPH01198317A JP2444588A JP2444588A JPH01198317A JP H01198317 A JPH01198317 A JP H01198317A JP 2444588 A JP2444588 A JP 2444588A JP 2444588 A JP2444588 A JP 2444588A JP H01198317 A JPH01198317 A JP H01198317A
- Authority
- JP
- Japan
- Prior art keywords
- master model
- mold
- injected
- thin film
- female
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 17
- 229920005989 resin Polymers 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000001746 injection moulding Methods 0.000 title claims description 10
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000010409 thin film Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 4
- 238000009501 film coating Methods 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 230000009969 flowable effect Effects 0.000 abstract 4
- 239000012528 membrane Substances 0.000 abstract 4
- 239000000126 substance Substances 0.000 abstract 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 4
- 235000018212 Betula X uliginosa Nutrition 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は射出成形用樹脂型の製造方法、特に、マスター
モデルを用い、樹脂注入、転写により雄型、雌型を得る
射出成形用樹脂型の製造方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing a resin mold for injection molding, and particularly to a resin mold for injection molding in which a male mold and a female mold are obtained by resin injection and transfer using a master model. Relating to a manufacturing method.
従来の射出成形用樹脂型の製造方法は、マスターモデル
を液状ゴムで反転後、再度−次ゴム反転型を介し樹脂ま
たは樹脂に添加物を混入した流動体で反転して雄型、雌
型を得るものであった。The conventional method for manufacturing resin molds for injection molding is to invert the master model with liquid rubber, and then invert it again with resin or a fluid containing additives through the rubber inversion mold to create male and female molds. It was something to be gained.
次に従来の射出成形用樹脂型の製造方法について図面を
参照して説明する。Next, a conventional method for manufacturing a resin mold for injection molding will be described with reference to the drawings.
第３図は従来の第１の例を示す雌型の製造工程の断面説
明図である。FIG. 3 is a cross-sectional explanatory view of the manufacturing process of a female mold showing a first conventional example.
マスターモデル３０を設置した注型用枠体２８に液状ゴ
ムを注入固化し１次ゴム反転型２つを得る。〔第３図（
ａ）〕
１次ゴム反転型２９を注型用枠体２８に反転設置し、液
状ゴムを注入し、これを固化し２次ゴム反転型３１を得
る。〔第３図（ｂ）−（Ｃ） ）注型用枠体２８を用い
て２次ゴム反転型３］に樹脂あるいは樹脂に添加物を混
入した流動体３２ａを注入固化し雌型３２ｂを得る。〔
第３〕図（ｄ）−（ｅ）〕
第４図（ａ）−（ｅ）は従来の第２の例を示す雄型の製
造工程の断面説明図である。Liquid rubber is injected into the casting frame 28 on which the master model 30 is installed and solidified to obtain two primary rubber inversion molds. [Figure 3 (
a)] The primary rubber inversion mold 29 is installed inverted on the casting frame 28, liquid rubber is injected, and this is solidified to obtain the secondary rubber inversion mold 31. [FIGS. 3(b)-(C)] A resin or a fluid 32a containing an additive mixed with the resin is injected into the secondary rubber inverted mold 3 using the casting frame 28 and solidified to obtain a female mold 32b. . [
FIGS. 3(d)-(e)] FIGS. 4(a)-(e) are cross-sectional explanatory views of the manufacturing process of a male die showing a second conventional example.
プレート３６をパーティング面３つに接着したマスター
モデル３０を注型用枠体３３に設置し、液状ゴムを注入
しコ９次ゴム反転型３４を得る。１次ゴム反転型３４を
再度反転し、２次ゴム反転型３７を得る。さらに雌型３
２のＥ−程と同様にして雄型３８ｂを得る。A master model 30 with plates 36 adhered to three parting surfaces is placed on a casting frame 33, and liquid rubber is injected to obtain a nine-order rubber inversion mold 34. The primary rubber inversion mold 34 is inverted again to obtain a secondary rubber inversion mold 37. Furthermore, female type 3
A male mold 38b is obtained in the same manner as Step 2 E-.
上述した従来の射出成形用樹脂型の製造方法は、１次並
びに２次ゴム反転型を製作しなりれはならないことに加
えてバーチインク面にプレー１−を接着する必要がある
ので、多大の］二数がががり、また雄型と雌型の組合せ
時において位置決め機構がなく、製品肉厚の偏肉を生ず
るという欠点があった。The above-mentioned conventional method for manufacturing resin molds for injection molding requires the production of primary and secondary rubber inversion molds, as well as the need to adhere Plate 1- to the birch ink surface, which requires a large amount of effort. ] There were disadvantages in that the two parts were peeled off, and there was no positioning mechanism when the male and female molds were combined, resulting in uneven thickness of the product.
本発明の射出成形用樹脂型の製造方法は、可撓性薄膜の
一端をマスターモデルのバーチインク面全体に接合し他
端を箱状の注型用枠体内周部に接合する可撓性薄膜接合
工程と、前記マスターモデルの表面、裏面を前記可撓性
薄膜て覆う可撓性薄膜被覆工程と、前記マスターモデル
の表面および裏面の各々へ４Ｓｔ ’Ａ￥ｉまたは樹脂
に添加物を混入した流動体を注入固化し雄型、雌型を成
す注入固化工程とを含んて構成される。The method for manufacturing a resin mold for injection molding of the present invention involves bonding one end of a flexible thin film to the entire birch ink surface of a master model and joining the other end to the periphery of a box-shaped casting frame. a bonding step, a flexible thin film coating step of covering the front and back surfaces of the master model with the flexible thin film, and mixing an additive into 4St'A\i or resin on each of the front and back surfaces of the master model. The method includes an injection and solidification process in which a fluid is injected and solidified to form a male mold and a female mold.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の−・実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
第１図に示す射出成形用樹脂型の製造方法を順を追って
説明する。A method for manufacturing the resin mold for injection molding shown in FIG. 1 will be explained step by step.
箱状の注型用枠体１３内に支持ビン］４を設置する。可
撓性薄膜１２の一端をマスターモデル１１のバーチイン
ク面］５全体に接合し、他端を注型用枠体１３の内周部
に接合し、マスターモデル］１の表面および裏面を可撓
性薄膜１２で覆った後、マスターモデル１１を支持ピン
１４上に設置する。A support bottle] 4 is installed in a box-shaped casting frame 13. One end of the flexible thin film 12 is bonded to the entire birch ink surface 5 of the master model 11, and the other end is bonded to the inner circumference of the casting frame 13, thereby making the front and back surfaces of the master model 1 flexible. After covering with the transparent thin film 12, the master model 11 is placed on the support pins 14.
流入口分岐点８に設けたバルブ７６の開閉により雄型部
１０に流動体５を注入固化した後、雌型部９に流動体５
を注入同化する。After the fluid 5 is injected and solidified into the male mold part 10 by opening and closing the valve 76 provided at the inlet branch point 8, the fluid 5 is injected into the female mold part 9.
Inject and assimilate.
マスターモデル１１には貫通孔１１ｂがあり、雌型部９
に注入された流動体５は貫通孔１１ｂをも埋める。The master model 11 has a through hole 11b, and the female part 9
The fluid 5 injected also fills the through hole 11b.
第２図は雄型と雌型との位置決めをテーパービンにより
行なう第２の実施例を示す断面図である。FIG. 2 is a sectional view showing a second embodiment in which the male mold and the female mold are positioned using a tapered bin.
注型用枠体１３内に支持ピン］４に加えて、雄型２１．
雌型２０の位置決めを行なうテーパービン２６を設置す
る。以下の工程は第１の実施例と同じである。In addition to the support pin] 4 in the casting frame 13, a male die 21.
A tapered bin 26 for positioning the female mold 20 is installed. The following steps are the same as in the first embodiment.
第３の実施例としては、可撓性薄膜を離型剤で代替する
ことが考えられる。注型用枠体１３の内部に粘土を所定
の位置までつめ、粘土表面にマスターモデル１１９を設
置し、粘土およびマスターモデル表面に離型剤を塗布し
薄膜を形成せしめる。As a third embodiment, it is possible to replace the flexible thin film with a mold release agent. Clay is packed into the casting frame 13 to a predetermined position, a master model 119 is placed on the surface of the clay, and a release agent is applied to the clay and the surface of the master model to form a thin film.
次に流動体５を注入固化し雌型を得る。続いて粘土を除
去し、この部分に再度離型剤を塗布し薄膜をし、流動体
５を注入固化して雄型を得る。Next, the fluid 5 is injected and solidified to obtain a female mold. Subsequently, the clay is removed, a mold release agent is applied to this part again to form a thin film, and the fluid 5 is injected and solidified to obtain a male mold.
以上説明したように、本発明の射出成形用樹脂型の製造
方法は、成型部品のパーティング面を境にして雄型、雌
をが一体化できるので、あらためて位置決め機構を付加
する必要かなく、製造工程の短縮、工数の削減が計れる
うえ、パーティング面の位置を正確に取ることができる
ため、成型品肉厚の偏肉を防止することがてきるので、
成型品精度を向上てきるという効果かある。As explained above, in the method of manufacturing a resin mold for injection molding of the present invention, the male mold and the female mold can be integrated with the parting surface of the molded part as a boundary, so there is no need to add a positioning mechanism. In addition to shortening the manufacturing process and reducing the number of man-hours, it is also possible to accurately position the parting surface, which prevents uneven thickness of the molded product.
This has the effect of improving the precision of molded products.
第１図および第２図（１、本発明の第１と第２の実施例
を示す断面図、第３図および第４図は、従来の第１およ
び第２の例を示す製造工程の断面説明図である。
５・流動体、６・−容器、９・・雌型部、１０・・・雄
型部、１１・・マスターモデル、］２・・可撓性薄膜、
１３・・注型用枠体、１４・・支持ピン、１５・・バー
チインク面。
代理人 弁理士 内 原 晋Figures 1 and 2 (1. Cross-sectional views showing the first and second embodiments of the present invention; Figures 3 and 4 are cross-sectional views of the manufacturing process showing the conventional first and second examples. It is an explanatory diagram. 5. Fluid, 6.-Container, 9. Female mold part, 10. Male mold part, 11. Master model,] 2. Flexible thin film.
13... Casting frame body, 14... Support pin, 15... Birch ink surface. Agent Patent Attorney Susumu Uchihara
Claims (1)
体に接合し他端を箱状の注型用枠体内周部に接合する可
撓性薄膜接合工程と、前記マスターモデルの表面、裏面
を前記可撓性薄膜で覆う可撓性薄膜被覆工程と、前記マ
スターモデルの表面および裏面の各々へ樹脂または樹脂
に添加物を混入した流動体を注入固化し雄型、雌型を成
す注入固化工程とを含むことを特徴とする射出成形用樹
脂型の製造方法。A flexible thin film bonding step in which one end of the flexible thin film is bonded to the entire parting surface of the master model and the other end is bonded to the periphery of the box-shaped casting frame; a flexible thin film coating step for covering the master model with a flexible thin film; and an injection solidification step of injecting and solidifying a resin or a fluid containing additives into each of the front and back surfaces of the master model to form a male mold and a female mold. A method for manufacturing a resin mold for injection molding, the method comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2444588A JPH01198317A (en) | 1988-02-03 | 1988-02-03 | Manufacture of resin mold for injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2444588A JPH01198317A (en) | 1988-02-03 | 1988-02-03 | Manufacture of resin mold for injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01198317A true JPH01198317A (en) | 1989-08-09 |
Family
ID=12138344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2444588A Pending JPH01198317A (en) | 1988-02-03 | 1988-02-03 | Manufacture of resin mold for injection molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01198317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04163007A (en) * | 1990-10-23 | 1992-06-08 | Matsushita Electric Works Ltd | Manufacture of resin mold |
-
1988
- 1988-02-03 JP JP2444588A patent/JPH01198317A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04163007A (en) * | 1990-10-23 | 1992-06-08 | Matsushita Electric Works Ltd | Manufacture of resin mold |
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