JPH0551621U - Injection mold - Google Patents

Injection mold

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Publication number
JPH0551621U
JPH0551621U JP10151391U JP10151391U JPH0551621U JP H0551621 U JPH0551621 U JP H0551621U JP 10151391 U JP10151391 U JP 10151391U JP 10151391 U JP10151391 U JP 10151391U JP H0551621 U JPH0551621 U JP H0551621U
Authority
JP
Japan
Prior art keywords
mold
parting surface
cavity
pressure receiving
receiving plate
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
Application number
JP10151391U
Other languages
Japanese (ja)
Inventor
国人 山中
友三郎 志茂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP10151391U priority Critical patent/JPH0551621U/en
Publication of JPH0551621U publication Critical patent/JPH0551621U/en
Pending legal-status Critical Current

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  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

(57)【要約】 (修正有) 【目的】常に正確にかつ容易にガス抜き空間7を形成す
ることができるとともに、金型の寿命が長い射出成形用
金型を提供する。 【構成】キャビティ型2およびコア型3の少なくとも一
方の型がそのパーティング面の所望位置に嵌合凹部を有
し、閉合時に他方の型の対応する面に当接して両型のパ
ーティング面間に所定のガス抜き空間7を形成する圧受
板4,5が、パーティング面より所定厚みだけ他方の型
方向へ突出するように前記嵌合凹部に分離自在に嵌合固
定されている構成とした。
(57) [Summary] (Correction) [Purpose] To provide an injection molding die in which the gas venting space 7 can always be formed accurately and easily and which has a long life. [Structure] At least one of the cavity mold 2 and the core mold 3 has a fitting recess at a desired position on its parting surface, and abuts against the corresponding surface of the other mold at the time of closing, and the parting surface of both molds Pressure receiving plates 4 and 5 that form a predetermined degassing space 7 therebetween are detachably fitted and fixed in the fitting concave portion so as to project from the parting surface in the other mold direction by a predetermined thickness. did.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、射出成形用金型に関する。 The present invention relates to an injection molding die.

【0002】[0002]

【従来の技術】[Prior Art]

射出成形用金型は、キャビティ型とコア型とが接触するパーティング面の所々 に0.2mm程度の深さのガス溝が型外に達するまで設けられていて、キャビティ 型とコア型とを閉合した時に、このガス溝によってパーティングライン沿いに形 成されるガス抜き空間を介して成形時にキャビィティ内で発生するガスを型外に 排出し、空洞部分がなく精密な成形品を得るようにしている。 The injection mold is provided with gas grooves having a depth of about 0.2 mm at the parting surface where the cavity mold and the core mold come into contact with each other until reaching the outside of the mold. When closed, the gas generated in the cavity during molding is discharged to the outside of the mold through the degassing space formed along the parting line by this gas groove, so that there is no cavity and a precise molded product is obtained. ing.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

ところで、従来、上記ガス溝は、パーティング面の所望部分を切削加工するこ とによって形成するようになっているのであるが、切削を手加工によって行って いるため、熟練工であっても加工精度にバラツキがある。したがって、溝深さが 足りずに、ガス抜きが充分にできなかったり、溝深さが深すぎて、樹脂がガス溝 に入り込んで成形品にバリとして残ったりすることがある。 By the way, conventionally, the gas groove is formed by cutting a desired portion of the parting surface, but since the cutting is done by hand, even if it is a skilled worker, the processing accuracy is high. There are variations. Therefore, the groove depth may be insufficient and gas may not be sufficiently discharged, or the groove depth may be too deep and the resin may enter the gas groove and remain as burrs on the molded product.

【0004】 また、正確にガス溝が形成されていたとしても、キャビティ型とコア型を閉合 すると、パーティング面に強い圧力がかかるため、長期間使用していると、パー ティング面が磨耗してガス溝がなくなってしまい、パーティング面を研磨してガ ス溝を再び形成すると言う保守作業を行わなければならないが、前述のように、 熟練工であっても簡単にできる保守作業ではなく、作業性の悪いものであった。Further, even if the gas groove is accurately formed, when the cavity mold and the core mold are closed, a strong pressure is applied to the parting surface, so that the parting surface is worn out after long-term use. As a result, the gas groove disappears, and the maintenance work of polishing the parting surface and forming the gas groove again must be performed, but as mentioned above, it is not a maintenance work that even a skilled worker can easily do. The workability was poor.

【0005】 しかも、あまりパーティング面を研磨しすぎると成形品に影響がでてくるため 、金型の寿命も短いと言う問題がある。 本考案は、このような事情に鑑みて、常に正確にかつ容易にガス抜き空間を形 成することができるとともに、金型の寿命が長い射出成形用金型を提供すること を目的としている。Moreover, if the parting surface is excessively polished, the molded product will be affected, and there is a problem that the life of the mold is short. In view of such circumstances, an object of the present invention is to provide an injection molding die which can always form a degassing space accurately and easily and has a long life.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

本考案にかかる射出成形用金型は、このような目的を達成するために、キャビ ティ型およびコア型の少なくとも一方の型がそのパーティング面の所望位置に嵌 合凹部を有し、閉合時に他方の型の対応する面に当接して両型のパーティング面 間に所定のガス抜き空間を形成する圧受板が、パーティング面より所定厚みだけ 他方の型方向へ突出するように前記嵌合凹部に分離自在に嵌合固定されている構 成とした。 In order to achieve such an object, the injection mold according to the present invention has at least one of a cavity mold and a core mold having a fitting recess at a desired position on its parting surface, and at the time of closing the mold. The pressure receiving plate, which comes into contact with the corresponding surface of the other mold to form a predetermined degassing space between the parting surfaces of both molds, is fitted so that it protrudes from the parting surface toward the other mold by a predetermined thickness. The structure is such that it is detachably fitted and fixed in the recess.

【0007】 上記構成において、圧受板は、キャビティ型およびコア型のいずれか一方に設 けてもよいし、両型に対面するように設けても構わない。 また、圧受板の突出厚みは、特に限定されないが、閉合時にガス抜き空間の間 隙を0.2mm程度に形成できる厚みに設定しておくことが好ましい。 圧受板の材質は、キャビティ型およびコア型と同じ材質でもよいし、一方の型 のみに設ける場合は、他方の型の対応する面より少し柔らかい材質のものを用い ることが好ましい。In the above structure, the pressure receiving plate may be provided in either one of the cavity type and the core type, or may be provided so as to face both types. Further, the projection thickness of the pressure receiving plate is not particularly limited, but it is preferable to set the thickness so that the gap between the degassing spaces can be formed to about 0.2 mm at the time of closing. The material of the pressure receiving plate may be the same as that of the cavity type and the core type, and when provided in only one type, it is preferable to use a material slightly softer than the corresponding surface of the other type.

【0008】[0008]

【作用】[Action]

上記構成によれば、一方の型にのみ圧受板を設けた場合、キャビティ型および コア型を閉合すると、圧受板が他方の型のパーティング面に当接し、両型のパー ティング面間に圧受板の突出厚みと略同じ間隙幅のガス抜き空間が均一に形成さ れる。 According to the above configuration, when the pressure receiving plate is provided only on one of the molds, when the cavity mold and the core mold are closed, the pressure receiving plate comes into contact with the parting surface of the other mold and the pressure receiving plate is applied between the parting surfaces of both molds. A degassing space with a gap width approximately the same as the protruding thickness of the plate is uniformly formed.

【0009】 したがって、キャビティ内に樹脂を充填すれば、キャビティ内に発生したガス は、このガス抜き空間を通って外部に排出されるため、正確に成形品を得ること ができる。 また、長期間使用していると、圧受板が磨耗してくるが、磨耗した圧受板は、 セットボルトなどの固定手段を解離して嵌合を解除し、機械加工等て正確に形成 された新しい圧受板を嵌合凹部に嵌合して再び所望のガス抜き空間ができるよう にすることができる。Therefore, if the cavity is filled with the resin, the gas generated in the cavity is discharged to the outside through the degassing space, so that a molded product can be obtained accurately. In addition, the pressure plate wears out after long-term use, but the worn pressure plate was released by releasing the fixing means such as the set bolt to release the fitting, and was accurately formed by machining. A new pressure plate can be fitted into the mating recess to again create the desired venting space.

【0010】[0010]

【実施例】【Example】

以下に、本考案を、その実施例をあらわす図面を参照しつつ詳しく説明する。 図1にみるように、この金型1は、キャビティ型2およびコア型3を備えてい て、成形品9としてプラスチックバケツを成形するようになっている。 キャビティ型2は、図2にみるように、パーティング面21に3つの嵌合凹部 (図2では1つしかあらわしていない)22が形成されていて、図3にみるよう にこの嵌合凹部22に3枚の圧受板4がそれぞれ嵌合され、図4にみるように、 その上端面をパーティング面21より0.1mm突出させるように調整してセット ボルト6,6,6によって固定されている。 Hereinafter, the present invention will be described in detail with reference to the drawings showing an embodiment thereof. As shown in FIG. 1, the mold 1 is provided with a cavity mold 2 and a core mold 3, and a plastic bucket is molded as a molded product 9. As shown in FIG. 2, the cavity mold 2 has three fitting recesses 22 (only one of which is shown in FIG. 2) 22 formed on the parting surface 21, and as shown in FIG. As shown in FIG. 4, the three pressure receiving plates 4 are fitted to the respective 22, and the upper end surface of the pressure receiving plate 4 is adjusted so as to protrude by 0.1 mm from the parting surface 21 and fixed by the set bolts 6, 6, and 6. ing.

【0011】 コア型3も図4にみるように、キャビティ型2の圧受板4に対応する位置に、 キャビティ型2と同様にして3枚の圧受板5がその上端面をキャビティ型3のパ ーティング面31より0.1mm突出させてパーティング面31の嵌合凹部に嵌合 固定されている。 なお、図1およひ図3中、11はゲートである。As shown in FIG. 4, the core die 3 also has three pressure receiving plates 5 at the positions corresponding to the pressure receiving plates 4 of the cavity die 2 in the same manner as the cavity die 2 with the upper end surface of the cavity die 3 being the upper surface of the cavity die 3. It is fitted and fixed in the fitting recess of the parting surface 31 by protruding 0.1 mm from the parting surface 31. In addition, in FIG. 1 and FIG. 3, 11 is a gate.

【0012】 この金型1は、以上のように構成されており、図4にみるように、キャビティ 型2とコア型3とを閉合すると、圧受板4と圧受板5とが密着して、キャビティ 型2のパーティング面21とコア型3のパーティング面31との間に0.2mmの 間隙幅のガス抜き空間7を型の全周にわたって正確に形成する。なお、図4では 、考案を明瞭にするため、ガス抜き空間7の間隙幅を強調して図示しているが、 ギャビティ8からこのガス抜き空間7へ樹脂が流入してバリが発生しないように 、実際はもっと間隙幅が狭くなっている。The mold 1 is configured as described above. As shown in FIG. 4, when the cavity mold 2 and the core mold 3 are closed, the pressure receiving plate 4 and the pressure receiving plate 5 come into close contact with each other, A degassing space 7 having a gap width of 0.2 mm is accurately formed between the parting surface 21 of the cavity mold 2 and the parting surface 31 of the core mold 3 over the entire circumference of the mold. In FIG. 4, the gap width of the gas vent space 7 is emphasized for the sake of clarity of the invention. However, in order to prevent burrs from being caused by the resin flowing into the gas vent space 7 from the cavity 8. Actually, the gap width is narrower.

【0013】 従って、図1のように、ゲート11からキャビティ8内へ樹脂を充填すれば、 キャビティ8内に発生したガスは、このガス抜き空間7を通って型外へ排出され 、キャビティ8内には残らず、空洞のない精密な成形品9を得ることができる。 また、ガス抜き空間7が正確に所定の間隙幅になっているので、バリの発生もな くなる。Therefore, as shown in FIG. 1, when resin is filled into the cavity 8 from the gate 11, the gas generated in the cavity 8 is discharged to the outside of the mold through the degassing space 7, and the inside of the cavity 8 is discharged. Therefore, it is possible to obtain a precise molded product 9 having no voids. Further, since the degassing space 7 has a predetermined gap width accurately, burrs are not generated.

【0014】 しかも、この金型1は、長期間の使用で圧受板4(5)が磨耗してくると、セ ットボルト6,6,6を解いて磨耗した圧受板4(5)と予め機械製作によって 正確に作った予備の圧受板4(5)と交換するだけで、再び正確にガス抜き空間 7を形成することができるため、従来のようにパーティング面21(31)の再 研磨や手加工によるガス溝の形成などの作業が必要でなくなり、誰にでも簡単に 保守作業を行うことができる。Moreover, in the mold 1, when the pressure receiving plate 4 (5) is worn out for a long period of time, the set bolts 6, 6, 6 are unfastened and the worn pressure receiving plate 4 (5) and the machine are preliminarily used. The degassing space 7 can be accurately formed again by simply replacing it with the spare pressure receiving plate 4 (5) that has been accurately made by the manufacturing process. No need for manual processing such as forming gas grooves, and anyone can easily perform maintenance work.

【0015】 また、キャビティ型2およびコア型3のパーティング面21,31は、閉合に より接触することがないので、磨耗がなく、金型の寿命が向上する。 本考案にかかる射出成形用金型は、上記の実施例に限定されない。たとえば、 上記の実施例では、対面する両方の圧受板を同じ寸法だけ突出させていたが、一 方だけを突出させるようにしても構わない。Further, since the parting surfaces 21 and 31 of the cavity mold 2 and the core mold 3 do not come into contact with each other when they are closed, there is no wear and the life of the mold is improved. The injection molding die according to the present invention is not limited to the above embodiment. For example, in the above embodiment, both facing pressure receiving plates are projected by the same size, but it is also possible to project only one of them.

【0016】[0016]

【考案の効果】[Effect of the device]

本考案にかかる射出成形用金型は、以上のように構成されているので、機械製 作によって正確に形成された圧受板を嵌合凹部に嵌合固定することによって正確 にガス抜き空間を形成することができ、常にバリのない精密な成形品を得ること ができる。 Since the injection molding die according to the present invention is constructed as described above, the degassing space is accurately formed by fitting and fixing the pressure receiving plate accurately formed by the mechanical manufacturing in the fitting recess. Therefore, it is possible to always obtain a precision molded product without burrs.

【0017】 しかも、圧受板の交換だけで、簡単に一定間隙のガス抜き空間を形成すること ができ、作業の熟練性が要求されないため、保守作業が誰にでも簡単に行えるよ うになる。 また、長期間使用していても圧受板が磨耗するだけであるで、金型本体の傷み が少なく、金型の寿命も短い。Moreover, since the degassing space having a constant gap can be easily formed only by exchanging the pressure receiving plate, and the skill of the work is not required, anyone can easily perform the maintenance work. Also, even if it is used for a long period of time, the pressure receiving plate only wears, the damage to the mold body is small, and the life of the mold is short.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案にかかる射出成形用金型のコア型とキャ
ビティ型とを閉合してキャビティ内に樹脂を充満させた
状態をあらわす断面図である。
FIG. 1 is a cross-sectional view showing a state in which a core mold and a cavity mold of an injection molding mold according to the present invention are closed and a cavity is filled with a resin.

【図2】そのキャビティ型の圧受板部分を分解してあら
わす断面図である。
FIG. 2 is a cross-sectional view showing the cavity type pressure receiving plate portion in an exploded manner.

【図3】キャビティ型の型内を臨む正面図である。FIG. 3 is a front view of the cavity mold facing the inside of the mold.

【図4】図1のガス抜き空間部分をあらわす拡大断面図
である。
FIG. 4 is an enlarged cross-sectional view showing a degassing space portion of FIG.

【符号の説明】[Explanation of symbols]

1 金型 2 キャビティ型 3 コア型 4 圧受板 5 圧受板 7 ガス抜き空間 21 キャビティ型のパーティング面 22 嵌合凹部 31 コア型のパーティング面 1 mold 2 cavity type 3 core type 4 pressure receiving plate 5 pressure receiving plate 7 degassing space 21 cavity type parting surface 22 fitting recess 31 core type parting surface

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】キャビティ型およびコア型の少なくとも一
方の型がそのパーティング面の所望位置に嵌合凹部を有
し、閉合時に他方の型の対応する面に当接して両型のパ
ーティング面間に所定のガス抜き空間を形成する圧受板
が、パーティング面より所定厚みだけ他方の型方向へ突
出するように前記嵌合凹部に分離自在に嵌合固定されて
いることを特徴とする射出成形用金型。
1. At least one of a cavity mold and a core mold has a fitting concave portion at a desired position on its parting surface, and abuts against a corresponding surface of the other mold at the time of closing so that the parting surface of both molds. An injection characterized in that a pressure receiving plate that forms a predetermined degassing space is detachably fitted and fixed in the fitting recess so as to protrude from the parting surface in the other mold direction by a predetermined thickness. Mold for molding.
JP10151391U 1991-12-10 1991-12-10 Injection mold Pending JPH0551621U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10151391U JPH0551621U (en) 1991-12-10 1991-12-10 Injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10151391U JPH0551621U (en) 1991-12-10 1991-12-10 Injection mold

Publications (1)

Publication Number Publication Date
JPH0551621U true JPH0551621U (en) 1993-07-09

Family

ID=14302637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10151391U Pending JPH0551621U (en) 1991-12-10 1991-12-10 Injection mold

Country Status (1)

Country Link
JP (1) JPH0551621U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10249923A (en) * 1997-03-18 1998-09-22 Hokkai Can Co Ltd Mold for blow molding
JP2003053798A (en) * 2001-08-09 2003-02-26 Fuji Photo Film Co Ltd Mold for injection molding and method for injection molding
KR20150140495A (en) * 2014-06-05 2015-12-16 희성전자 주식회사 Apparatus of Manufacturing Light Guide Plate
WO2017208584A1 (en) * 2016-05-30 2017-12-07 タカラ化成工業 株式会社 Gas extraction method in resin injection molding and shim plate used in said gas extraction method
JP2020116917A (en) * 2019-01-28 2020-08-06 Towa株式会社 Resin molding device, and method for manufacturing resin molding
JP2020116916A (en) * 2019-01-28 2020-08-06 Towa株式会社 Resin molding device, and method for manufacturing resin molding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55146714A (en) * 1979-04-18 1980-11-15 Discovision Ass Molding device and itsmethod
JPS6097818A (en) * 1983-11-02 1985-05-31 Toyota Motor Corp Mold for long body molding and manufacture thereof
JPS63197616A (en) * 1987-02-12 1988-08-16 Nippon Plast Co Ltd Reactive injection molding
JPH0210749A (en) * 1988-06-28 1990-01-16 Mitsubishi Electric Corp Mold for resin sealed type semiconductor device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55146714A (en) * 1979-04-18 1980-11-15 Discovision Ass Molding device and itsmethod
JPS6097818A (en) * 1983-11-02 1985-05-31 Toyota Motor Corp Mold for long body molding and manufacture thereof
JPS63197616A (en) * 1987-02-12 1988-08-16 Nippon Plast Co Ltd Reactive injection molding
JPH0210749A (en) * 1988-06-28 1990-01-16 Mitsubishi Electric Corp Mold for resin sealed type semiconductor device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10249923A (en) * 1997-03-18 1998-09-22 Hokkai Can Co Ltd Mold for blow molding
JP2003053798A (en) * 2001-08-09 2003-02-26 Fuji Photo Film Co Ltd Mold for injection molding and method for injection molding
KR20150140495A (en) * 2014-06-05 2015-12-16 희성전자 주식회사 Apparatus of Manufacturing Light Guide Plate
WO2017208584A1 (en) * 2016-05-30 2017-12-07 タカラ化成工業 株式会社 Gas extraction method in resin injection molding and shim plate used in said gas extraction method
JP2020116917A (en) * 2019-01-28 2020-08-06 Towa株式会社 Resin molding device, and method for manufacturing resin molding
JP2020116916A (en) * 2019-01-28 2020-08-06 Towa株式会社 Resin molding device, and method for manufacturing resin molding

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