JPS609733A - Burr preventive mold assembly - Google Patents

Burr preventive mold assembly

Info

Publication number
JPS609733A
JPS609733A JP11764083A JP11764083A JPS609733A JP S609733 A JPS609733 A JP S609733A JP 11764083 A JP11764083 A JP 11764083A JP 11764083 A JP11764083 A JP 11764083A JP S609733 A JPS609733 A JP S609733A
Authority
JP
Japan
Prior art keywords
mold
insert
spring
burrs
preventive
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
JP11764083A
Other languages
Japanese (ja)
Inventor
Takashi Morimoto
隆志 森本
Shinji Kanayama
金山　真司
Riichi Murakoshi
利一 村越
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11764083A priority Critical patent/JPS609733A/en
Publication of JPS609733A publication Critical patent/JPS609733A/en
Pending legal-status Critical Current

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
    • B29C45/26—Moulds
    • B29C45/2608—Mould seals

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent burrs from generating without exerting influence upon injection pressure, by a method wherein an insert sliding in a direction of mold opening is incorporated in one side mold of either a stationary side or movable side and force based on a spring is applied to the insert in a direction of mold closing. CONSTITUTION:When it is desired to control strictly generation of burrs in a molded article part 10 among the molded article parts 8-10, a mold in this place is made into an insert 11 and a butt part (C-C line part) is butted by making use of compression force based on a spring 12. With this construction, a matter that a gap is generated on the butt part is eliminated, which becomes a preventive device of generation of the burrs.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は固定側・可動側一方の金型に型開き方向にスラ
イドするインサートを組み込み、これに型閉め方向に力
を加えるパリ防止金型装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a mold prevention device that incorporates an insert that slides in the mold opening direction into one of the fixed and movable molds and applies force to the mold in the mold closing direction. It is something.

従来例の構成とその問題点 従来、第１図に示す成形品を成形する金型は第２図に示
すように固定側金型１と可動側金型２の突合せを型締力
だけで行なっている。これでは成２ページ 形時に射出圧力により突合せ部（Ｂ−Ｂ線部）にすきま
が生じ、パリが発生しやすい。これを防止するためには
、射出圧力を小さくしなければならず、成形条件の範囲
が狭くなりまた成形時の管理も困難になるという問題点
があった。Conventional structure and its problems Conventionally, in the mold for molding the molded product shown in Fig. 1, the stationary mold 1 and the movable mold 2 are butted together using only mold clamping force, as shown in Fig. 2. ing. In this case, a gap is created in the abutting portion (B-B line portion) due to the injection pressure during double-page forming, which tends to cause cracks. In order to prevent this, the injection pressure must be lowered, which poses the problem of narrowing the range of molding conditions and making control during molding difficult.

発明の目的 本発明は、特定箇所における上記従来の欠点を解消する
ための金型機構である。OBJECTS OF THE INVENTION The present invention is a mold mechanism for eliminating the above-mentioned conventional drawbacks at specific locations.

発明の構成 本発明は、成形品のパリ発生を厳密に管理する必要のあ
る特定箇所をスライド可能なインサートとし、これに型
締力以外のカーたとえばスプリング力など−を加える機
構とからなり、この特定箇所の突合せ力を強くでき、射
出圧力に影響なくパリの発生を防止する。Structure of the Invention The present invention includes a slideable insert for a specific location where it is necessary to strictly control the occurrence of flash in a molded product, and a mechanism for applying a force other than mold clamping force, such as a spring force, to this insert. It is possible to strengthen the butt force at a specific location, preventing the occurrence of flashing without affecting the injection pressure.

実施例の説明 以下に本発明の一実施例を第３〜４図にもとづいて説明
する。なお、第３図〜第４図は第１図のＡ−Ａ線上での
断面図を示す。図において、６は固定側金型、７は可動
側金型、８，９．１０は成３／・二・ 形品部、１１はインサート、１２はスプリング、−１３
は押ネジである。成形品部１ｏにおいてパリ発生を厳密
に管理したい時この箇所の金型をインサートとし、型締
力の他にスプリングによる圧縮力も利用し突合せ部（Ｃ
−Ｃ線部）を従来以上の締付力で突合せるものである。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. Note that FIGS. 3 and 4 show cross-sectional views taken along line A-A in FIG. 1. In the figure, 6 is the fixed side mold, 7 is the movable side mold, 8, 9.10 is the forming part, 11 is the insert, 12 is the spring, -13
is a set screw. When you want to strictly control the occurrence of flash in the molded part 1o, use the mold at this point as an insert, and use the compressive force of the spring in addition to the mold clamping force to control the butt part (C
- C line portion) are butted together with a tightening force greater than that of the conventional method.

これにより従来どおりの射出圧力でも突合せ部にすきま
が生ずる事もなく、よってパリ発生の防止になる。本発
明は固定側金型、可動側金型のどちらにも組込む事がで
きる。またスプリング以外の力の利用も可能である。As a result, even if the injection pressure is the same as in the past, there will be no gap at the abutting portion, thereby preventing the occurrence of flash. The present invention can be incorporated into either a fixed mold or a movable mold. It is also possible to use forces other than springs.

発明の効果 このように本発明では、特にパリ発生を厳密に管理した
い箇所−たとえば回転軸など−のパリ発生防止にきわめ
て有利である。また成形条件（特に射出圧力）に影響を
受けないため、成形品品質の向上が図れる事、成形条件
の範囲が拡がり成形時の管理もやりやすくなるという特
徴も奏している０Effects of the Invention As described above, the present invention is extremely advantageous in preventing the occurrence of fringing, particularly in locations where the occurrence of fringing should be strictly controlled, such as the rotating shaft. In addition, since it is not affected by molding conditions (especially injection pressure), it is possible to improve the quality of molded products, and the range of molding conditions is expanded, making it easier to manage during molding.

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

第１図は成形品の斜視図、第２図は従来の金型の要部断
面図、第３図は本発明の一実施例におけるパリ防止金型
装置の型開時における断面図、第４図は同成形時におけ
る断面図である。 ６・・・・・・固定側金型、７・・・・・・可動側金型
、８・９・１０・・・・・・成形品部、１１・・・・・
・インサート、１２・・・・・・スプリング、１３・・
・・・・押ネジ。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名へ　
リFIG. 1 is a perspective view of a molded product, FIG. 2 is a cross-sectional view of essential parts of a conventional mold, FIG. The figure is a cross-sectional view during the same molding. 6... Fixed side mold, 7... Movable side mold, 8, 9, 10... Molded part, 11...
・Insert, 12...Spring, 13...
...Press screw. Name of agent: Patent attorney Toshio Nakao and one other person
Li

Claims (1)

【特許請求の範囲】[Claims] 製品成形部に組込まれ、成形品離型方向に一定量動作可
能にしたインサートと、このインサートを金型より押し
出す方向に力が加わるよう組込まれたバネと、このバネ
及びインサートを組込み製品成形部に固定された部品と
からなるパリ防止金型装置。An insert that is incorporated into the product molding section and can move a certain amount in the direction of releasing the molded product, a spring that is incorporated to apply force in the direction of extruding the insert from the mold, and a product molding section that incorporates this spring and insert. A paris-proof mold device consisting of parts fixed to.
JP11764083A 1983-06-29 1983-06-29 Burr preventive mold assembly Pending JPS609733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11764083A JPS609733A (en) 1983-06-29 1983-06-29 Burr preventive mold assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11764083A JPS609733A (en) 1983-06-29 1983-06-29 Burr preventive mold assembly

Publications (1)

Publication Number Publication Date
JPS609733A true JPS609733A (en) 1985-01-18

Family

ID=14716695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11764083A Pending JPS609733A (en) 1983-06-29 1983-06-29 Burr preventive mold assembly

Country Status (1)

Country Link
JP (1) JPS609733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030021342A (en) * 2001-09-05 2003-03-15 깁스코리아다이캐스팅 유한회사 Metal mold apparatus for preventing burr generation of cap type product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030021342A (en) * 2001-09-05 2003-03-15 깁스코리아다이캐스팅 유한회사 Metal mold apparatus for preventing burr generation of cap type product

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