JPH035979B2 - - Google Patents
Info
- Publication number
- JPH035979B2 JPH035979B2 JP20901881A JP20901881A JPH035979B2 JP H035979 B2 JPH035979 B2 JP H035979B2 JP 20901881 A JP20901881 A JP 20901881A JP 20901881 A JP20901881 A JP 20901881A JP H035979 B2 JPH035979 B2 JP H035979B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- mixing plate
- mixing
- molding material
- fixed
- 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
Links
- 239000012778 molding material Substances 0.000 claims description 35
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000001746 injection moulding Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 description 8
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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
- B29C45/26—Moulds
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は、射出形成用金型に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an injection mold.
従来のこの種の金型としては、第１，２図に示
すものがある。これは、金型１にミキシングヘツ
ド２を、ミキシングプレート３を介して取り付け
た構造になつている。すなわち、ミキシングヘツ
ド２は印篭抉でミキシングプレート３に嵌着して
ボルト４で取り付け、そのミキシングプレート３
は下半部を金型１のミキシングプレート取付面５
のうち固定金型１ａ側の取付面５にボルト６で取
り付け、上半部は可動金型１ｂに取り付けたロツ
キングブロツク７でその可動金型１ｂに押圧して
密着させ得る構成にしてある。 Conventional molds of this type include those shown in FIGS. 1 and 2. This has a structure in which a mixing head 2 is attached to a mold 1 via a mixing plate 3. That is, the mixing head 2 is fitted onto the mixing plate 3 with an incarnation and attached with bolts 4, and the mixing plate 3 is attached with bolts 4.
The lower half is attached to the mixing plate mounting surface 5 of mold 1.
It is attached to the mounting surface 5 on the fixed mold 1a side with bolts 6, and the upper half can be pressed into close contact with the movable mold 1b by a locking block 7 attached to the movable mold 1b.
ここで、上記金型１のミキシングプレート取付
面５は、金型１の開閉方向と同一方向であつて、
固定金型１ａから可動金型１ｂにまたがる一つの
面に形成してある。なお、８はピストン弁で、シ
リンダ８ａ内の油圧を調整してピストン８ｂを駆
動し、そのロツド８ｃでミキシングヘツド２の成
形材料供給用の開口２ａを開閉できる構成にして
ある。 Here, the mixing plate mounting surface 5 of the mold 1 is in the same direction as the opening/closing direction of the mold 1, and
It is formed on one surface extending from the fixed mold 1a to the movable mold 1b. Reference numeral 8 designates a piston valve which adjusts the oil pressure within the cylinder 8a to drive a piston 8b, and whose rod 8c can open and close the molding material supply opening 2a of the mixing head 2.
このような構造になつているので、可動金型１
ｂを、第２図のように、鎖線位置から実線位置へ
閉じると、可動金型１ｂ側の取付面５かミキシン
グプレート３に接触するとともに、可動金型１ｂ
に取り付けたロツキングブロツク７がミキシング
プレート３を可動金型１ｂに押圧して密着させ
る。その結果、金型１とミキシングプレート３と
の間はシールされる。 With this structure, movable mold 1
When b is closed from the chain line position to the solid line position as shown in FIG. 2, the mounting surface 5 on the side of the movable mold 1b comes into contact with the mixing plate 3, and the
A locking block 7 attached to the movable mold 1b presses the mixing plate 3 into close contact with the movable mold 1b. As a result, the space between the mold 1 and the mixing plate 3 is sealed.
そして、金型１を閉じた状態で、ミキシングヘ
ツド２の開口２ａより成形材料を圧入すると、こ
れがミキシングプレート３の成形材料射出路３ａ
から金型１のランナー１ｃに射出され、ゲート１
ｄを経てキヤピテイ１ｅに圧入（射出とも云う）
される。 When the molding material is press-fitted through the opening 2a of the mixing head 2 with the mold 1 closed, the molding material is injected into the molding material injection path 3a of the mixing plate 3.
is injected into the runner 1c of the mold 1, and the gate 1
Press-fit (also called injection) into the capi- ty 1e through d.
be done.
しかしながら、このような従来の金型にあつて
は、金型１とミキシングプレート３との間にシー
ルを金属面接触によつて行つているため、金型１
とミキシングプレート３との接触面の加工に高い
精度が要求され、金型１の固定金型１ａと可動金
型１ｂの位置関係についても、ずれを生じないよ
うに極めて高い精度が要求される。 However, in such conventional molds, since the seal is established between the mold 1 and the mixing plate 3 by metal surface contact, the mold 1
High accuracy is required in the machining of the contact surface between the mold 1 and the mixing plate 3, and extremely high accuracy is also required in the positional relationship between the fixed mold 1a and the movable mold 1b of the mold 1 to avoid misalignment.
従つて、加工精度が充分に確保できない場合に
は、金型１とミキシングプレート３の接触面から
容易に成形材料が外部に漏出してしまう。また、
仮に、加工精度，位置精度が確保されても、金属
加工面の面接触によつてシール効果を得るもので
あるため、成形材料の若干の漏出は避けられない
という問題点があつた。 Therefore, if sufficient machining accuracy cannot be ensured, the molding material will easily leak out from the contact surface between the mold 1 and the mixing plate 3. Also,
Even if machining accuracy and positional accuracy were ensured, there was a problem in that some leakage of the molding material was unavoidable because the sealing effect was obtained by surface contact between the metal processed surfaces.
この発明は、このような従来の問題点に着目し
てなされたもので、固定金型と可動金型のうちの
一方の金型に取り付けたミキシングプレートの他
の金型との対向面を、他方の金型の開閉方向に対
して傾斜面とし、他方の金型には、これを閉じた
ときミキシングプレートの傾斜面に圧接する傾斜
面を設けることによつて、上記問題点を解決する
ことを目的とする。また、他の目的とするところ
は、ミキシングプレートに、金型との接触面より
僅かに突出する射出用通孔を有する弾性ブツシユ
を取付けることによつて、上記問題点を解決する
にある。 This invention was made by focusing on such conventional problems, and the mixing plate attached to one of the fixed mold and the movable mold has a surface facing the other mold. To solve the above problem by providing an inclined surface in the opening/closing direction of the other mold, and providing the other mold with an inclined surface that comes into pressure contact with the inclined surface of the mixing plate when the other mold is closed. With the goal. Another object of the present invention is to solve the above-mentioned problems by attaching to the mixing plate an elastic bush having an injection hole that slightly protrudes from the contact surface with the mold.
以下、この発明の実施例を第３〜５図によつて
説明する。 Embodiments of the present invention will be described below with reference to FIGS. 3 to 5.
図において、Ｄは金型で、固定金型１０と可動
金型１１とで構成されている。固定金型１０は固
定金型本体１０ａとこれにボルト１５で取り付け
たブロツクS1とより構成され、可動金型１１は可
動金型本体１１ａとこれにボルト１５で取り付け
たブロツクS2とより構成されている。 In the figure, D is a mold, which is composed of a fixed mold 10 and a movable mold 11. The fixed mold 10 is composed of a fixed mold body 10a and a block S1 attached to it with bolts 15, and the movable mold 11 is composed of a movable mold body 11a and a block S2 attached to it with bolts 15. has been done.
Ｐはミキシングプレートで、ボルト１４ａでブ
ロツクS1に取り付けられている。Ｈはミキシング
プレートＰにボルト１４で取り付けたミキシング
ヘツド、Ｖはビストン弁で、第１，２図における
ビストン弁８と同じ構造のものである。 P is a mixing plate, which is attached to block S1 with bolts 14a. H is a mixing head attached to the mixing plate P with bolts 14, and V is a piston valve, which has the same structure as the piston valve 8 in FIGS. 1 and 2.
上記ミキシングプレートＰは、第３図のよう
に、両金型１０，１１を閉じた状態においては、
ブロツクS1に取り付けた側の面がブロツクS2の側
面の受け面となつている。 As shown in FIG. 3, when the mixing plate P has both molds 10 and 11 closed,
The surface attached to block S1 serves as a receiving surface for the side surface of block S2 .
すなわち、ミキシングプレートＰは、ブロツク
S2との対向面９を可動金型１１を開く方向へ向け
て開くように傾斜させてブロツクS1に取り付けて
ある。 That is, the mixing plate P is
The movable mold 11 is attached to the block S1 so that the surface 9 facing S2 is inclined so as to open in the direction in which the movable mold 11 is opened.
ブロツクS2は、両金型１０，１１の閉状態にお
いて、ミキシングプレートＰの前記対向面９と圧
接する傾斜面を有している。 The block S2 has an inclined surface that comes into pressure contact with the opposing surface 9 of the mixing plate P when both molds 10 and 11 are in the closed state.
１２はミキシングプレートＰに設けた中央孔
で、成形材料の流路となる孔である。１６はミキ
シングヘツドＨに設けた成形材料の供給口であ
る。１７，１８および１９は、固定金型１０と可
動金型１１を閉じたきにできるランナー，ゲート
およびキヤビテイである。両金型１０，１１の閉
状態においては、上記供給口１６と中央孔１２と
ランナー１７とゲート１８とキヤビテイ１９は連
通する。 Reference numeral 12 denotes a central hole provided in the mixing plate P, which serves as a flow path for the molding material. 16 is a molding material supply port provided in the mixing head H. 17, 18, and 19 are runners, gates, and cavities that are formed when the fixed mold 10 and the movable mold 11 are closed. When both molds 10 and 11 are in a closed state, the supply port 16, the central hole 12, the runner 17, the gate 18, and the cavity 19 communicate with each other.
次に、上記構成に基づく作用を説明する。 Next, the operation based on the above configuration will be explained.
ミキシングヘツドＨをミキシングプレートＰに
取り付け、そのミキシングプレートＰを固定金型
１０のブロツクS1に固定したところで、開いてお
いた（第３図の鎖線位置にある）可動金型１１を
実線位置に閉じると、可動金型のくさび作用によ
つて、可動金型の傾斜面がその受け面であるミキ
シングプレートの対向面９と圧接する。その結
果、ミキシングプレートＰと可動金型１１の間は
確実に密封シールされる。 When the mixing head H is attached to the mixing plate P and the mixing plate P is fixed to the block S1 of the fixed mold 10, the open movable mold 11 (located in the chain line position in FIG. 3) is moved to the solid line position. When closed, the wedge action of the movable mold brings the inclined surface of the movable mold into pressure contact with the opposing surface 9 of the mixing plate serving as its receiving surface. As a result, the space between the mixing plate P and the movable mold 11 is reliably sealed.
ミキシングプレートＰと可動金型１１との間が
完全に密封シールされたところで、ミキシングヘ
ツドＨの供給口１６より成形材料を圧入すると、
圧入された成形材料はミキシングプレートＰの成
形材料射出路１３からミキシングプレートＰの中
央孔１２を通り金型Ｄのランナー１７、ゲート１
８を経てキヤビテイ１９内へ圧入される。このと
き、ミキシングプレートＰとブロツクS2の間は、
同ブロツクS2のくさび作用によつて密封シールさ
れているので、両者Ｐ，S2の圧接部から成形材料
が漏出するおそれはない。 When the space between the mixing plate P and the movable mold 11 is completely sealed, the molding material is press-fitted from the supply port 16 of the mixing head H.
The press-fitted molding material passes from the molding material injection path 13 of the mixing plate P through the central hole 12 of the mixing plate P to the runner 17 of the mold D and the gate 1.
8 and is press-fitted into the cavity 19. At this time, the distance between mixing plate P and block S2 is as follows.
Since the block S2 is hermetically sealed by the wedge action, there is no risk of the molding material leaking from the press-contact area between the two blocks P and S2 .
第４図（第３図と同一部分には同一符号を付
し、説明は省略する。）は、第３図の実施例にお
けるミキシングプレートＰの中央孔１２を大きく
してブツシユ嵌着孔を設け、これに射出用通孔１
３を形成した弾性ブツシユＢを嵌着した場合の例
である。この弾性ブツシユＢは、上記ミキシング
プレートＰの両金型１０，１１との対向面９より
僅かに、例えば突出部ｔが0.3mm程度突出するよ
うに嵌着したところに特徴がある。 Fig. 4 (the same parts as in Fig. 3 are given the same reference numerals and their explanations are omitted) shows that the center hole 12 of the mixing plate P in the embodiment shown in Fig. 3 is enlarged and a bushing fitting hole is provided. , this has injection hole 1.
This is an example in which an elastic bushing B having a shape of 3 is fitted. This elastic bush B is characterized in that it is fitted so that the protrusion t protrudes slightly from the surface 9 of the mixing plate P facing the molds 10 and 11, for example, by about 0.3 mm.
ここで、上記ミキシングプレートＰは、ブロツ
クS1にボルト１４ａで取り付けるので、上記弾性
ブツシユＢは、その突出部ｔが圧縮される。その
結果、ブロツクS1とミキシングプレートＰとの間
は、第５図のように、密封シールされた状態にな
つている。一方、ミキシングプレートＰの対向面
９に圧接する可動金型１１の傾斜面は、可動金型
１１を閉じたときにミキシングプレートＰと当接
して前記ブツシユｂの突出部ｔを圧縮し、両者１
１，Ｐ間を密封シールできるようになつている。 Here, since the mixing plate P is attached to the block S1 with bolts 14a, the protrusion t of the elastic bush B is compressed. As a result, the space between the block S1 and the mixing plate P is hermetically sealed, as shown in FIG. On the other hand, the inclined surface of the movable mold 11 that presses against the opposing surface 9 of the mixing plate P comes into contact with the mixing plate P when the movable mold 11 is closed, and compresses the protrusion t of the bush b, so that both
1 and P can be sealed tightly.
また、上記弾性ブツシユＢは、成形材料に対し
て非接着性の樹脂、例えばテフロンで形成してあ
り、その成形材料射出路１３は、金型Ｄとの接触
面に環状の溝２０（第５，６図）が設けてある。
この溝２０は必要に応じ設ければよい。更に、弾
性ブツシユＢの成形材料射出路１３は、金型Ｄ側
に拡大したテーパ穴にしてある。 The elastic bushing B is made of a resin that does not adhere to the molding material, such as Teflon, and the molding material injection path 13 has an annular groove 20 (fifth , 6) are provided.
This groove 20 may be provided as necessary. Further, the molding material injection path 13 of the elastic bush B is formed into a tapered hole enlarged toward the mold D side.
次に、上記構成に基づく作用を説明する。 Next, the operation based on the above configuration will be explained.
ミキシングヘツドＨをミキシングプレートＰに
取り付け、そのミキシングプレートＰを固定金型
１０に固定すると、弾性ブツシユＢのミキシング
プレートＰからの突出部ｔは、その下半部、つま
り成形材料射出路１３の口縁以下が圧縮されて弾
性変形し、前記固定金型１０とミキシングプレー
トＰの間が確実に密封シールされる。 When the mixing head H is attached to the mixing plate P and the mixing plate P is fixed to the fixed mold 10, the protruding portion t of the elastic bush B from the mixing plate P is the lower half thereof, that is, the opening of the molding material injection path 13. The portion below the edge is compressed and deformed elastically, and the space between the stationary mold 10 and the mixing plate P is reliably sealed.
ミキシングヘツドＨを固定金型１０に取り付け
たところで、開いておいた可動金型１１（第４図
では鎖線位置）を実線位置に閉じると、その過程
で、ミキシングプレートＰは可動金型１１の受け
面となつているので、弾性ブツシユＢの突出部分
は徐々に圧縮され、完全閉止の段階に至ると、ミ
キシングプレートＰと可動金型１１との間は確実
に密封シールされる。 After the mixing head H is attached to the fixed mold 10, the open movable mold 11 (the chain line position in FIG. 4) is closed to the solid line position. Since the elastic bushing B is a flat surface, the protruding portion of the elastic bushing B is gradually compressed, and when the stage of complete closure is reached, the space between the mixing plate P and the movable mold 11 is reliably sealed.
ミキシングプレートＰと金型Ｄとの間が完全に
密封シールされたところで、ミキシングヘツドＨ
の開口１６より成形材料を圧入するが、弾性ブツ
シユＢのシール効果によつてその漏出は防止され
る。 When the space between the mixing plate P and the mold D is completely sealed, the mixing head H
Although the molding material is press-fitted through the opening 16, the sealing effect of the elastic bushing B prevents its leakage.
何らかの原因でシール効果が不充分なため、成
形材料が若干漏出することがあつても、弾性ブツ
シユＢに環状の溝２０があれば、第１回目の射出
成形で成形材料がその溝２０に充填され、この充
填された成形材料がシール材として機能し、成形
材の漏出を防ぐことができる。 Even if some molding material leaks due to insufficient sealing effect for some reason, if the elastic bushing B has an annular groove 20, the molding material will be filled into the groove 20 during the first injection molding. This filled molding material functions as a sealing material and can prevent leakage of the molding material.
金型Ｄを開いて成形体を取り出す場合、弾性ブ
ツシユＢの成形材料射出路１３の中に固化した成
形材料は、ウレタンのような粘着性の強い樹脂で
あつても、テフロン特有の高い非接着性に加え
て、上記成形材料射出路１３がテーパ穴になつて
るので、ゲート１８，ランナー１７部分に固化し
た成形材料を引張れば抜き取ることができる。 When the mold D is opened and the molded product is taken out, the molding material solidified in the molding material injection path 13 of the elastic bushing B has a high non-adhesive property unique to Teflon, even if it is a highly adhesive resin such as urethane. In addition to this, since the molding material injection path 13 is a tapered hole, the molding material solidified at the gate 18 and runner 17 portion can be pulled out.
第７図は、弾性ブツシユＢの他の実施例であつ
て、この弾性ブツシユB1はテフロンブツシユ２
１の外にウレタンブツシユ２２を重ねて二層にし
たものである。なお、２３はミキシングプレート
である。この弾性ブツシユB1の特徴は、テフロ
ンブツシユ２１で防ぎ切れない成形材料の漏出
を、より弾性度の高いウレタンブツシユ２２によ
つ完全に防止できる点にある。 FIG. 7 shows another embodiment of the elastic bushing B, in which the elastic bushing B1 is a Teflon bushing 2.
A urethane bushing 22 is superimposed on the outside of the film 1 to form a two-layer structure. Note that 23 is a mixing plate. A feature of this elastic bushing B1 is that leakage of the molding material that cannot be prevented by the Teflon bushing 21 can be completely prevented by the urethane bushing 22 having higher elasticity.
この発明は、上述のような構成にしたので、金
型とミキシングプレートとの間は、いわゆるくさ
び効果、またはこれと弾性ブツシユの弾性変形に
より完全に密封シールすることができ、成形材料
の漏出を確実に防止することができるという効果
を得ることができる。 Since this invention has the above-described configuration, the mold and the mixing plate can be completely sealed by the so-called wedge effect or by the elastic deformation of the wedge effect and the elastic bushing, thereby preventing leakage of the molding material. The effect of reliably preventing this can be obtained.
また、この発明は、その弾性ブツシユを成形材
料に対して非接着性の樹脂で形成し、かつその成
形材料射出路はテーパ穴としたので、その中で固
化した成形材料が付着せず容易に抜き取ることが
でき、その都度、清掃をしなくても連続成形が可
能になるという効果が得られる。 In addition, in this invention, the elastic bushing is made of a resin that does not adhere to the molding material, and the molding material injection path is a tapered hole, so that the molding material that has hardened therein does not stick and is easily formed. The effect is that it can be removed and continuous molding can be performed without having to clean it each time.
更に、この発明は、その弾性ブツシユを、ミキ
シングプレートに取り付けるだけで、従来のよう
に、特に高精度の機械加工を必要としないので、
コストの低減を実現することができる。 Furthermore, this invention does not require particularly high-precision machining, unlike conventional methods, by simply attaching the elastic bush to the mixing plate.
Cost reduction can be achieved.
更に、また、この発明は、その弾性ブツシユの
成形材料射出路に環状の溝を設けた場合には、こ
の溝に侵入して固化した成形材をシール材とて使
用できるので、シール効果をより確実なものとす
るこどができる。 Furthermore, in the present invention, when an annular groove is provided in the molding material injection path of the elastic bushing, the molding material that has entered the groove and solidified can be used as a sealing material, thereby improving the sealing effect. There is a child who can make it certain.
第１，２図は従来の射出成形用金型を示し、第
１図はその斜視図、第２図はその断面図、第３図
および第４図はこの発明による実施例の射出成形
用金型を示す断面図、第５図は第４図の要部拡大
断面図、第６図は第４図の要部拡大斜視図、第７
図は第４図における弾性ブツシユの他の実施例を
示す断面図である。
Ｄ……金型、Ｈ……ミキシングヘツド、Ｐ……
ミキシングプレート、Ｂ…弾性ブツシユ、９……
対向面、１０……固定金型、１１……可動金型、
１３……成形材料射出路。
1 and 2 show conventional injection molding molds, FIG. 1 is a perspective view thereof, FIG. 2 is a sectional view thereof, and FIGS. 3 and 4 are injection molding molds according to embodiments of the present invention. 5 is an enlarged sectional view of the main part of Fig. 4, Fig. 6 is an enlarged perspective view of the main part of Fig. 4, and Fig. 7 is a sectional view showing the mold.
This figure is a sectional view showing another embodiment of the elastic bushing in FIG. 4. D...Mold, H...Mixing head, P...
Mixing plate, B...Elastic bushing, 9...
Opposing surface, 10... Fixed mold, 11... Movable mold,
13... Molding material injection path.
Claims (1)
シングプレートを介してミキシングヘツドを固定
し、このミキシングヘツドからミキシングプレー
トの中央孔を通して両金型の合せ面に形成される
ランナーに成形材料を射出するようにした射出成
形用金型であつて、前記ミキシングプレートは、
他方の金型の側面との対向面を同金型の開方向へ
開くように傾斜させて一方の金型に固定し、前記
他方の金型には、両金型を閉じたとき、前記対向
面と圧接する傾斜面を設けたことを特徴とする射
出成形用金型。 ２ 固定金型と可動金型のうち一方の金型にミキ
シングプレートを介してミキシングヘツドを固定
し、このミキシングヘツドからミキシングプレー
トの中央孔を通して両金型の合せ面に形成される
ランナーに成形材料を射出するようにした射出形
成用金型であつて、前記ミキシングプレートは、
他方の金型の側面との対向面のうち少なくともラ
ンナーと対向する部分とその近傍が、同金型の開
方向へ開いた傾斜面となつているとともに、同傾
斜面にブツシユ嵌着孔を有しており、前記他方の
金型は、両金型を閉じたとき、ミキシングプレー
トの傾斜面と圧接する傾斜面を有しており、前記
ブツシユ嵌着孔には、射出用通孔を有する弾性ブ
ツシユがその端面をミキシングプレートの傾斜面
よりわずかに突出させた状態で嵌着されているこ
とを特徴とする射出成形用金型。[Scope of Claims] 1. A mixing head is fixed to one of the fixed mold and the movable mold via a mixing plate, and the mixing head is formed on the mating surface of both molds through the center hole of the mixing plate. An injection mold for injecting a molding material into a runner, the mixing plate comprising:
The surface facing the side surface of the other mold is tilted so as to open in the opening direction of the same mold, and is fixed to one mold, and when both molds are closed, the opposite surface is fixed to the other mold. An injection mold characterized by having an inclined surface that comes into pressure contact with the surface. 2. A mixing head is fixed to one of the fixed mold and the movable mold via a mixing plate, and the molding material is passed from the mixing head through the center hole of the mixing plate to the runner formed on the mating surface of both molds. An injection mold for injection molding, the mixing plate comprising:
Of the surface facing the side surface of the other mold, at least the portion facing the runner and the vicinity thereof are sloped surfaces that open in the opening direction of the mold, and the sloped surface has a bushing fitting hole. The other mold has an inclined surface that comes into pressure contact with the inclined surface of the mixing plate when both molds are closed, and the bushing fitting hole has an elastic mold having an injection through hole. An injection mold characterized in that a bushing is fitted with its end surface slightly protruding from the inclined surface of a mixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20901881A JPS58110227A (en) | 1981-12-25 | 1981-12-25 | Device for preventing leakage of molding material in mold for injection molding application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20901881A JPS58110227A (en) | 1981-12-25 | 1981-12-25 | Device for preventing leakage of molding material in mold for injection molding application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58110227A JPS58110227A (en) | 1983-06-30 |
| JPH035979B2 true JPH035979B2 (en) | 1991-01-28 |
Family
ID=16565900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20901881A Granted JPS58110227A (en) | 1981-12-25 | 1981-12-25 | Device for preventing leakage of molding material in mold for injection molding application |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58110227A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0261621U (en) * | 1988-10-27 | 1990-05-08 |
-
1981
- 1981-12-25 JP JP20901881A patent/JPS58110227A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58110227A (en) | 1983-06-30 |
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