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JPS60155423A - Application of stamping to injection molded product - Google Patents

Application of stamping to injection molded product

Info

Publication number
JPS60155423A
JPS60155423A JP1375184A JP1375184A JPS60155423A JP S60155423 A JPS60155423 A JP S60155423A JP 1375184 A JP1375184 A JP 1375184A JP 1375184 A JP1375184 A JP 1375184A JP S60155423 A JPS60155423 A JP S60155423A
Authority
JP
Japan
Prior art keywords
mold
injection molded
knock
molded product
pin
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
JP1375184A
Other languages
Japanese (ja)
Inventor
Yoshinori Tanaka
良典 田中
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1375184A priority Critical patent/JPS60155423A/en
Publication of JPS60155423A publication Critical patent/JPS60155423A/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
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • B29C45/372—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings provided with means for marking or patterning, e.g. numbering articles
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B29C33/424—Moulding surfaces provided with means for marking or patterning
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/442—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive means therefor
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B29C45/401—Ejector pin constructions or mountings
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C2037/80—Identifying, e.g. coding, dating, marking, numbering

Landscapes

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

Abstract

PURPOSE:To make it possible to apply a stamping simultaneously with molding while making it possible to alter the content of the stampling, by applying the stamping image such as a character, a figure or a picture pattern to the leading end of a knock-out pin for knocking out an injection molded product from an injection mold. CONSTITUTION:A knock-out pin is protruded to the cavity of a mold and knocks out the injection molded product left in the mold in a closely adhered state to detach the same. Said knock-out pin is provided in the mold and, when the mold is opened, a knock-out plate advances in cooperated relation to said pin and protruded to the cavity of the mold to knock out the injection molded product from the cavity. When the mold is closed, the knock-out plate is returned to the original position by a return pin and the knock-out pin is also returned to the original position in cooperated relation to said knock-out plate. Because a stamping image such as a character, a figure or a picture pattern is applied to the leading end of knock-out pin, it is stamped to the molded product.

Description

【発明の詳細な説明】 〔技術分野〕 本発明は、射出成形される射出成形品に刻印する射出成
形品の刻印法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for marking an injection molded product by stamping an injection molded product.

〔背景技術） 従来にあっては、射出成形される射出成形品に刻印する
には、金型本体の内面自体に直接文字、数字、図柄等の
刻印を施して、射出成形される射出成形品に刻印するも
のである。この場合、刻印の文字、数字、図柄等を変更
しようとしても簡単にはできず、変更しようとすれば、
刻印部分を埋め直してから改めて変更する刻印を施すこ
とになり、時間的にも、コスト的にも非常に面倒なこと
であった。また、ノックアウトピンにて射出成形金型の
キャビティから射出成形品を突き出す場合には、射出成
形品には必ずノックアウトピンのあとがわずかに残り、
射出成形品の外観上見苦しいもので、該ノックアウトピ
ンのあとを外観意匠上問題とならない部分にする必要が
あり、射出成形の金型の設計上問題となる場合があった
。[Background technology] Conventionally, in order to engrave an injection molded product, characters, numbers, designs, etc. are directly engraved on the inner surface of the mold body itself. shall be engraved on it. In this case, even if you try to change the letters, numbers, designs, etc. of the engraving, it will not be possible to change it easily, and if you try to change it,
The engraved area had to be refilled and then a new engraving was applied, which was extremely troublesome in terms of time and cost. Also, when ejecting an injection molded product from the cavity of an injection mold using a knockout pin, a slight mark of the knockout pin always remains on the injection molded product.
The appearance of the injection molded product is unsightly, and the area after the knockout pin needs to be made into a part that does not pose a problem in terms of appearance design, which may cause problems in the design of the injection mold.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、上記のような点に鑑みて為されたもの
であり、射出成形される射出成形品に刻印を簡単にでき
、刻印の内容を容易に変更できる射出成形品の刻印法を
提供するところにある。The object of the present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a method for stamping injection molded products that can be easily stamped on injection molded products and that can easily change the contents of the stamp. It's there to provide.

〔発明の開示〕[Disclosure of the invention]

以下、本発明の詳細な説明する。 The present invention will be explained in detail below.

本発明の射出成形品の刻印法は、射出成形金型から射出
成形品を突き出すノックアウトピンの先端に文字、数字
、図柄等の刻印を施して、射出成形した際に射出成形品
に刻印するものである。The stamping method for injection molded products of the present invention involves stamping letters, numbers, designs, etc. on the tip of a knockout pin that pushes out the injection molded product from the injection mold, and marking the injection molded product when it is injection molded. It is.

本発明のノックアウトピンは、金型のキャビンティに突
き出されて、金型に密着して取り残されている射出成形
品を突き出して取り外すものである。ノックアウトピン
は金型内に設けられ、金型が開いた際に、突出し板が前
進すると共に連動して前進して金型のキャビンティに突
き出されて、射出成形品をキャビンティより突き出すも
のである。そして、金型が閉じるときにはリターンピン
により突出し板かもとの位置に戻されるのに連動して、
ノックアウトピンももとの位置に戻されることなるもの
である。The knockout pin of the present invention is protruded into the cabin of the mold to eject and remove the injection molded product remaining in close contact with the mold. The knockout pin is installed inside the mold, and when the mold is opened, the knockout pin moves forward in conjunction with the forward movement of the ejector plate and is pushed out into the cabin tee of the mold, causing the injection molded product to be pushed out from the cabin tee. be. When the mold closes, the protruding plate is returned to its original position by the return pin, and
The knockout pin is also returned to its original position.

上記のようなノックアウトピンの先端には文字、数字、
図柄等の刻印が施されているものであり、射出成形した
際に射出成形品のノックアウトピンの位置には、ノック
アウトピンの先端に施された同様の文字、数字、図柄等
が刻印されるものとなる。例えば、射出成形品のサイズ
の数字、文字や商標等の図柄が刻印することができるも
のである。The tip of the knockout pin shown above has letters, numbers,
Items that are engraved with designs, etc., and when injection molded, the same letters, numbers, designs, etc. applied to the tip of the knockout pin will be engraved at the position of the knockout pin of the injection molded product. becomes. For example, numbers, letters, and designs such as trademarks can be engraved on the size of the injection molded product.

しかも、金型自体を分解して、ノックアウトピンを取り
替えることにより、簡単に刻印する内容を変更すること
ができるものとなる。例えば、射出成形の製造日が必要
な場合は、ノックアウトピンを取り替えるだけで製造年
月日を射出成形品に刻印することができるものとなる。Furthermore, by disassembling the mold itself and replacing the knockout pins, the contents to be engraved can be easily changed. For example, if the manufacturing date of injection molding is required, the manufacturing date can be stamped on the injection molded product simply by replacing the knockout pin.

〔発明の効果〕〔Effect of the invention〕

上述の如く、本発明の射出成形品の刻印法は、射出成形
金型から射出成形品を突き出すノックアウトピンの先端
に文字、数字、図柄等の刻印を施して、射出成形した際
に射出成形品に刻印するものであるから、射出成形に必
要となるノックアウトピンを利用して、射出成形品に必
ず残るあとを刻印として利用して、外観上良くすること
ができることになり、しかも、射出成形される射出成形
品に刻印することが簡単にでき、刻印の内容をもノック
アウトピンを取り替えるだけで容易に変更できるもので
ある。As mentioned above, the method for marking injection molded products of the present invention involves stamping letters, numbers, designs, etc. on the tip of the knockout pin that pushes out the injection molded product from the injection mold, so that the injection molded product will not be stamped when the injection molded product is injected. This means that the knockout pins required for injection molding can be used to improve the appearance of the injection molded product by using the marks that always remain on the injection molded product as a stamp. It can be easily stamped on injection molded products, and the contents of the stamp can be easily changed by simply replacing the knockout pin.

１、場■牛の耘 射出成形品の刻印法 ３、補正をする者 場■牛との１理系　特許出願人 任　所　大阪府門真市大字門真１０４８番地名　称（５
８３）松下電工株式会社 代表者　小　林　郁 ４、代理人 住　所　大阪府門真市大字門真１０４８番地７、補正の
内容 別紙の通り １、　明細書の第３頁第１行目乃至第２行目の「キャビ
ンティ」の字句を「キャビティ」の字句に訂正する。1. Stamping method for injection molded products 3. Person making corrections 1. Science field Patent applicant Location 1048 Kadoma, Kadoma City, Osaka Name (5)
83) Matsushita Electric Works Co., Ltd. Representative: Iku Kobayashi 4, Agent address: 1048-7 Kadoma, Kadoma City, Osaka Prefecture, Contents of the amendment as shown in attached sheet 1, Page 3, lines 1 and 2 of the specification Correct the word ``cabinty'' into the word ``cavity.''

２、同書の第６行目の「キャビンティ」の字句を「キャ
ビティ」の字句に訂正する。2. Correct the word ``cabinty'' in line 6 of the same book to the word ``cavity.''

３、同書の第７行目の「キャビンティ」の字句を「キャ
ビティ」の字句に訂正する。3. Correct the word ``cabinty'' in line 7 of the same book to the word ``cavity.''

以上 特許出願人 松下電工株式会社 代理人弁理士　竹　元　敏　丸 （ほか２名）that's all patent applicant Matsushita Electric Works Co., Ltd. Representative Patent Attorney Toshimaru Takemoto (2 others)

Claims (1)

【特許請求の範囲】[Claims] （１）　射出成形金型から射出成形品を突き出すノック
アウトピンの先端に文字、数字、図柄等の刻印を施して
、射出成形した際に射出成形品に刻印する射出成形品の
刻印法。(1) A method of stamping injection molded products, in which characters, numbers, designs, etc. are engraved on the tip of the knockout pin that pushes the injection molded product out of the injection mold, and the product is stamped upon injection molding.
JP1375184A 1984-01-25 1984-01-25 Application of stamping to injection molded product Pending JPS60155423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1375184A JPS60155423A (en) 1984-01-25 1984-01-25 Application of stamping to injection molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1375184A JPS60155423A (en) 1984-01-25 1984-01-25 Application of stamping to injection molded product

Publications (1)

Publication Number Publication Date
JPS60155423A true JPS60155423A (en) 1985-08-15

Family

ID=11841950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1375184A Pending JPS60155423A (en) 1984-01-25 1984-01-25 Application of stamping to injection molded product

Country Status (1)

Country Link
JP (1) JPS60155423A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05329877A (en) * 1992-05-29 1993-12-14 Taiyo Yuden Co Ltd Method of marking piezoelectric sound generator with production lot number
JPH07125021A (en) * 1993-10-29 1995-05-16 Nec Corp Injection mold
WO1995029049A1 (en) * 1994-04-26 1995-11-02 Dme Normalien Gmbh Tool for moulding or injecting plastic compounds and mould accessories, especially ejector device or core pin device for such a tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05329877A (en) * 1992-05-29 1993-12-14 Taiyo Yuden Co Ltd Method of marking piezoelectric sound generator with production lot number
JPH07125021A (en) * 1993-10-29 1995-05-16 Nec Corp Injection mold
WO1995029049A1 (en) * 1994-04-26 1995-11-02 Dme Normalien Gmbh Tool for moulding or injecting plastic compounds and mould accessories, especially ejector device or core pin device for such a tool

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