JPH07115357B2 - Resin mold making method - Google Patents
Resin mold making methodInfo
- Publication number
- JPH07115357B2 JPH07115357B2 JP62164776A JP16477687A JPH07115357B2 JP H07115357 B2 JPH07115357 B2 JP H07115357B2 JP 62164776 A JP62164776 A JP 62164776A JP 16477687 A JP16477687 A JP 16477687A JP H07115357 B2 JPH07115357 B2 JP H07115357B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- die
- fixed
- movable
- molded product
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はアンダーカット部を有する樹脂成形品を成形す
る型の製作方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for producing a mold for molding a resin molded product having an undercut portion.
（従来の技術） 車両のセンタピラーやリヤピラーの内側には縦方向にサ
イドライニングが貼設され、サイドライニングは断面略
Ｃ型で樹脂成形品が用いられ、断面略Ｃ型なので断面の
両端部にアンダーカット部が形成される。(Prior Art) Side linings are vertically attached to the inside of center pillars and rear pillars of a vehicle. The side linings are resin moldings with a substantially C-shaped cross section. An undercut portion is formed.
従来のこの種アンダーカット部を有する樹脂成形品を成
形する型は例えば特開昭57−203512号に示す如くで、可
動型と固定型及び摺動型とからなり、これら型の型閉時
に断面略Ｃ型のキャビティを形成し、成形後は可動型を
型開し、次に摺動型を動かして成形品を取り出してい
る。A conventional mold for molding a resin molded product having this kind of undercut portion is, for example, as shown in JP-A-57-203512, and comprises a movable mold, a fixed mold and a sliding mold. A substantially C-shaped cavity is formed, and after molding, the movable mold is opened, and then the sliding mold is moved to take out the molded product.
（発明が解決しようとする問題点） ところで以上の従来の型では、可動型と固定型との合せ
面（分割面）にはパーティングラインが発生したり段差
や喰い違いが発生し、従って成形後成形品のかかるパー
ティングラインや段差部を手作業によって修正面仕上げ
を行う必要があり、余分な手間と時間、労力を必要とし
た。(Problems to be solved by the invention) By the way, in the above conventional mold, a parting line is generated or a step or crossing occurs on the mating surface (dividing surface) of the movable mold and the fixed mold, and therefore the molding is performed. The parting line and the stepped portion of the post-molded product need to be manually corrected to finish the surface, which requires extra labor, time and labor.
これは可動型と固定型とを別個に製作しているためで、
特に成形品の厚さ方向の段差が出易く、従って型組付後
に修正作業を行ってはいるが、段差や分割面のズレ等は
型を別個に製作しているので不可避であり、これが成形
品の外表面に表れ、上記の如き不都合をもたらし、改善
が望まれる。This is because the movable type and the fixed type are manufactured separately,
In particular, a step in the thickness direction of the molded product is likely to occur, so correction work is performed after the mold is assembled, but steps and deviations of the dividing surface are unavoidable because the mold is manufactured separately. It appears on the outer surface of the product and causes the above-mentioned inconvenience, and improvement is desired.
本発明は以上の問題点に鑑みなされたもので、その目的
とする処は、型分割面に段差やズレ等のない型を得、パ
ーティングラインや段差等のない成形品を得ることがで
きるようにした樹脂成形型を得せしめるにある。The present invention has been made in view of the above problems, and an object thereof is to obtain a mold having no step or deviation on the mold dividing surface, and to obtain a molded product having no parting line or step. The purpose is to obtain the resin molding die.
以上の問題点を解決するための手段は、第１の型、第２
の型、及び摺動型からなり、型閉時に形成されたキャビ
ティで、アンダーカット部を有する樹脂成形品の成形を
行うようにした樹脂成形型において、前記第１の型を、
型部と基部とに分割して形成する工程と、前記第１の型
の型部と、前記第２の型とを位置決め、結合し、一体化
する工程と、前記第２の型と、前記第１の型の型部と
を、一体物として連続して型成形加工する工程と、前記
第２の型から第１の型の型部を分離する工程と、前記第
１の型の型部を、第１の型の基部に位置決め、固定する
工程とで構成した樹脂成形型の製作方法である。Means for solving the above problems are the first type and the second type.
And a sliding mold, and a cavity formed when the mold is closed to mold a resin molded product having an undercut portion, wherein the first mold is:
A step of forming the mold part and a base part separately, a step of positioning, coupling and integrating the mold part of the first mold and the second mold; the second mold; A step of continuously forming a mold part of the first mold as an integrated body, a step of separating the mold part of the first mold from the second mold, and a mold part of the first mold Is positioned and fixed on the base of the first mold.
（上記手段による作用） 上記手段によれば、可動型と固定型の型部とを一体的に
固定して連続する可動型型部と固定型型部とを連続して
型成形加工を行い、爾後固定型型部を固定型基部に固定
するので可動型型部と固定型型部との間に段差やズレは
発生しない。(Operation of the above means) According to the above means, the movable mold part and the fixed mold part are integrally fixed, and the continuous movable mold part and the fixed mold part are continuously molded, After that, since the fixed mold part is fixed to the fixed base part, no step or deviation occurs between the movable mold part and the fixed mold part.
（実施例） 次に本発明の好適する一実施例を添付図面を参照しつつ
詳述する。(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第１図は本発明により得られた樹脂成形型で、型１は上
の可動型２と下の固定型３とからなり、可動型２は上下
動自在である。下の固定型３は上側の型部４と下型の基
部５とからなり、型部４と基部５とはノックピン６で位
置決めされ、ボルト７で結着固定され、成形型を形成す
る状態では型部４と基部５とは一体化されている。FIG. 1 shows a resin molding die obtained by the present invention. The die 1 comprises an upper movable die 2 and a lower fixed die 3, and the movable die 2 is vertically movable. The lower fixed die 3 is composed of an upper die portion 4 and a lower die base portion 5. The die portion 4 and the base portion 5 are positioned by a knock pin 6 and fixed by a bolt 7 to form a forming die. The mold portion 4 and the base portion 5 are integrated.
可動型２の下面には上方に凹状の型部分８が形成され、
又固定型３の型部４の前記凹状型部分８の両端に連続す
る部分には略弯曲Ｌ状で対称的な型部分9,10が両端と連
続するように形成されている。On the lower surface of the movable die 2, a concave die portion 8 is formed,
Further, in the portion of the mold portion 4 of the fixed mold 3 which is continuous with both ends of the concave mold portion 8, substantially curved L-shaped and symmetrical mold portions 9 and 10 are formed so as to be continuous with both ends.
固定型３の型部４及び基部５には型部分8,9,10に向かう
下広がり状の空所11,12が形成され、これの中央部には
下方に広がるテーパー状の固定ガイド型13が縦通し、該
ガイド型13の上部両側には対称形状の摺動型14,15が配
設され、該摺動型14,15はロッド16,17に連結されてい
る。The mold part 4 and the base part 5 of the fixed mold 3 are formed with cavities 11 and 12 which spread downward toward the mold parts 8, 9 and 10, and a tapered fixed guide mold 13 which spreads downward in the center thereof. Are vertically passed through, and symmetrical sliding dies 14, 15 are arranged on both sides of the upper portion of the guide die 13, and the sliding dies 14, 15 are connected to rods 16, 17.
以上の型2,3の型部分8,9,10及びガイド型13の上面、摺
動型14,15の各上面及び両側面、並びに下面外端で成形
品のキャビティ18を形成し、該キャビティでこれの断面
形状に倣って樹脂成形品を成形する。得られた成形品は
アンダーカット部19,20があるのでその取り出しは、先
ず可動型２を上昇させて固定型３と離型し、次に左右の
摺動型14,15を夫々ロッド16,17を介して上動させ、型1
4,15は上昇しつつもガイド型13の両側面に案内されて相
互に相寄って縮閉し、成形品の内側から離脱し、アンダ
ーカット部と型14,15は干渉しない状態となり、成形品
を取り出すことができることとなり、これを鎖線Ａで示
した。A cavity 18 of the molded product is formed by the upper surfaces of the mold parts 8, 9, 10 of the molds 2, 3 and the guide mold 13, the upper surfaces and both side surfaces of the sliding molds 14, 15 and the outer surface of the lower surface, and the cavity 18 is formed. Then, a resin molded product is molded in accordance with the cross-sectional shape thereof. Since the obtained molded product has the undercut portions 19 and 20, the takeout thereof is performed by first raising the movable mold 2 and separating it from the fixed mold 3, and then removing the left and right sliding molds 14 and 15 from the rod 16 and the rod 16, respectively. Moved up through 17, mold 1
Although 4,15 are raised, they are guided by both side surfaces of the guide mold 13 and close to each other to shrink and close, and they are separated from the inside of the molded product, so that the undercut part and the molds 14 and 15 do not interfere with each other. The product can be taken out, which is indicated by a chain line A.
以上の型の製作を第２図に示した。The fabrication of the above mold is shown in FIG.
既述の如く固定型３を型部４と基部５に分割して形成
し、可動型２と型部４とをノックピン21で位置決めし、
ボルト22で結合一体化する。型２と型部４には予め成形
された型部分を夫々備え、一体化された型部４の型部分
23,24と可動型２の型部分25とを連続して一体物として
粗加工、仕上げ加工を行う。As described above, the fixed die 3 is divided into the die portion 4 and the base portion 5, and the movable die 2 and the die portion 4 are positioned by the knock pins 21.
Connect with bolt 22 to integrate. The mold 2 and the mold part 4 are each provided with a preformed mold part, and the mold part of the mold part 4 is integrated.
23, 24 and the mold part 25 of the movable mold 2 are continuously subjected to roughing and finishing as an integrated body.
以上により固定型３の型部４と可動型２の合せ面（分割
面）26,27は型合せし密着した状態で加工されることと
なり、段差やズレ、パーティングラインは発生しないこ
ととなる。As described above, the mold parts 4 of the fixed mold 3 and the mating surfaces (divided surfaces) 26 and 27 of the movable mold 2 are machined in a state in which they are aligned with each other and in close contact with each other, so that steps, deviations and parting lines do not occur. .
爾後ボルト22を抜出して可動型２と固定型３の型部４と
を分離し、型部４と固定型３の基部５とをノックピン６
で位置決めし、ボルト７で結合する。After that, the bolt 22 is pulled out to separate the movable die 2 and the die portion 4 of the fixed die 3 from each other, and the die portion 4 and the base portion 5 of the fixed die 3 are knocked by a knock pin 6
Position with, and connect with bolts 7.
（発明の効果） 以上で明らかな如く本発明によれば、型製作にさいし、
成形時に型合せ面（分割面）が形成される可動型と固定
型とを固定型を型部と基部とに分割形成し、可動型と固
定型型部とを位置決めし、一体化して型部分を加工する
ようにしたので相互の型部分は連続、一体に加工され、
従って段差やズレの発生は防止でき、又型合せ面に形成
される線、所謂パーティングラインの発生は可及的に防
止、或は外観上影響のない程度に抑えることができ、外
観修正作業の必要のない成形品を得ることができ、従来
の手作業による成形品の仕上げ加工等を廃し、省力化、
量産化、コストダウンを図ることができる。(Effects of the Invention) As is clear from the above, according to the present invention, in the mold production,
A movable die and a fixed die, on which a die mating surface (divided surface) is formed during molding, are formed by dividing the fixed die into a die portion and a base portion, and the movable die and the fixed die portion are positioned and integrated to form a die portion. Since it was designed to process, the mutual mold parts are processed continuously and integrally,
Therefore, it is possible to prevent the occurrence of steps and deviations, and to prevent the occurrence of lines, so-called parting lines, formed on the die-matching surface as much as possible, or to suppress the appearance to a minimum. It is possible to obtain molded products that do not require
Mass production and cost reduction can be achieved.
図面は本発明の一実施例を示すもので、第１図は樹脂成
形型の縦断面図、第２図は型製作状態の説明図である。 尚、図面中、１は型、2,3は第１及び第２の型、４は型
部、５は基部、14,15は摺動型である。The drawings show one embodiment of the present invention. FIG. 1 is a vertical cross-sectional view of a resin molding die, and FIG. 2 is an explanatory view of a die manufacturing state. In the drawings, 1 is a mold, 2 and 3 are first and second molds, 4 is a mold part, 5 is a base part, and 14 and 15 are sliding molds.
Claims (1)
り、型閉時に形成されたキャビティで、アンダーカット
部を有する樹脂成形品の成形を行うようにした樹脂成形
型において、 前記第１の型を、型部と基部とに分割して形成する工程
と、 前記第１の型の型部と、前記第２の型とを位置決め、結
合し、一体化する工程と、 前記第２の型と、前記第１の型の型部とを、一体物とし
て連続して型成形加工する工程と、 前記第２の型から第１の型の型部を分離する工程と、 前記第１の型の型部を、第１の型の基部に位置決め、固
定する工程と、 からなることを特徴とする樹脂成形型の製作方法。1. A resin molding die comprising a first die, a second die and a sliding die, wherein a cavity formed when the die is closed is used to form a resin molded article having an undercut portion. A step of forming the first mold by dividing it into a mold part and a base part, a step of positioning, coupling and integrating the mold part of the first mold and the second mold, A step of continuously performing a die forming process on the second die and a die portion of the first die as an integrated body; a step of separating the die portion of the first die from the second die; And a step of positioning and fixing the mold part of the first mold on the base part of the first mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164776A JPH07115357B2 (en) | 1987-07-01 | 1987-07-01 | Resin mold making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164776A JPH07115357B2 (en) | 1987-07-01 | 1987-07-01 | Resin mold making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS649706A JPS649706A (en) | 1989-01-13 |
| JPH07115357B2 true JPH07115357B2 (en) | 1995-12-13 |
Family
ID=15799722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164776A Expired - Lifetime JPH07115357B2 (en) | 1987-07-01 | 1987-07-01 | Resin mold making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07115357B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2971404B2 (en) * | 1996-09-27 | 1999-11-08 | 本田技研工業株式会社 | Vehicle seat structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6174750A (en) * | 1984-09-19 | 1986-04-17 | Toyoda Gosei Co Ltd | Production of metallic pattern for casting |
-
1987
- 1987-07-01 JP JP62164776A patent/JPH07115357B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS649706A (en) | 1989-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071213 Year of fee payment: 12 |