JPH04107121A - Die for plastic molding - Google Patents
Die for plastic moldingInfo
- Publication number
- JPH04107121A JPH04107121A JP2227510A JP22751090A JPH04107121A JP H04107121 A JPH04107121 A JP H04107121A JP 2227510 A JP2227510 A JP 2227510A JP 22751090 A JP22751090 A JP 22751090A JP H04107121 A JPH04107121 A JP H04107121A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum suction
- die
- metal part
- mold
- label
- 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.)
- Granted
Links
- 238000010137 moulding (plastic) Methods 0.000 title claims description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 238000000465 moulding Methods 0.000 description 6
- 238000000071 blow moulding Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229930192033 plastin Natural products 0.000 description 1
- 108010049148 plastin Proteins 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C2049/2412—Lining or labelling outside the article
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C2049/2464—Means for verifying or keeping the position of the lining or label, e.g. sensors, or attachment on mould wall
- B29C2049/2472—Means for verifying or keeping the position of the lining or label, e.g. sensors, or attachment on mould wall using vacuum
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はプラスチック成形用金型に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a plastic mold.
さらに詳しくは、内面にラベルを吸着して、プラスチッ
クの成形と同時に成形品表面にラベルを固定する方法に
使用する金型に関する。More specifically, the present invention relates to a mold used in a method for fixing a label to the surface of a molded product at the same time as plastic molding by adsorbing a label to the inner surface.
（従来の技術）
プラスチック成形用金型内面にラベルを吸着し、成形と
同時にラベルを成形品表面に固定する成形方法は周知で
ある。かかる方法は、例えば、特開昭６１−２３７６２
０号公報、特開昭６３−２９７０２３号公報、特開昭６
３−３１７４６２号公報、特開平１−６１２２３号公報
、特開平１−１５３４５２号公報、特開平１−１７６５
４２号公報、特開平１−２２２９２５号公報、特開平１
−２６７１５９号公報、特開平２−４６２８号公報等に
記載されている。(Prior Art) A molding method is well known in which a label is adsorbed to the inner surface of a plastic mold and the label is fixed to the surface of the molded product at the same time as molding. Such a method is described, for example, in Japanese Patent Application Laid-Open No. 61-23762.
Publication No. 0, JP-A-63-297023, JP-A-6
3-317462, JP 1-61223, JP 1-153452, JP 1-1765
No. 42, JP-A-1-222925, JP-A-1
It is described in JP-A-267159, JP-A-2-4628, and the like.
これらの方法においては、ラベルは金型内面に設けられ
た真空吸引孔により金型内面に固定され、しかる後、押
出成形または射出成形されたパリソンやプリフォームを
金型内部に収容し、パリソンまたはプリフォーム内部に
圧縮空気を吹き込んで中空成形すると共に、プラスチッ
ク自体の熱と吹き込み圧力によりプラスチックとラベル
を一体化する。In these methods, the label is fixed to the inner surface of the mold by vacuum suction holes provided on the inner surface of the mold, and then an extruded or injection molded parison or preform is placed inside the mold, and the parison or preform is placed inside the mold. Compressed air is blown into the preform to perform hollow molding, and the heat of the plastic itself and the blowing pressure are used to integrate the plastic and the label.
しかしながら、吹き込み圧力によりプラスチンりとラベ
ルは金型に設けられた真空吸引孔に押しつけられるため
、得られた成形品表面には、この真空吸引孔の跡が残る
ことがあった。真空吸引孔の大きさを小さくすればこの
跡を小さくすることができるが、ｍ械的手段によって設
けられる真空吸引孔の大きさには限界があり、孔の跡を
実質的に解消することは不可能であった。However, because the blowing pressure presses the plastin and the label against the vacuum suction holes provided in the mold, traces of the vacuum suction holes sometimes remain on the surface of the resulting molded product. This mark can be reduced by reducing the size of the vacuum suction hole, but there is a limit to the size of the vacuum suction hole provided by mechanical means, and it is impossible to substantially eliminate the hole mark. It was impossible.
これに対し、実開平２−４８３２４号公報は、かかる真
空吸引孔に焼結金属を埋め込むことにより、真空吸引の
ための空気流路を保存したまま、金型内面に露出する孔
の大きさを小さくし、成形品表面の吸引孔の跡を解消す
る技術を開示している。On the other hand, Utility Model Application Publication No. 2-48324 embeds sintered metal in the vacuum suction hole to reduce the size of the hole exposed on the inner surface of the mold while preserving the air flow path for vacuum suction. It discloses a technology to reduce the size of the suction holes and eliminate the traces of suction holes on the surface of the molded product.
しかしながら、焼結金属は、その製造方法から固く脆い
材質とならざるを得ない、このため、金型本体の内面と
焼結金属を面一に形成することが困難であり、また、破
損し易かった。However, sintered metal has to be a hard and brittle material due to its manufacturing method, so it is difficult to form the sintered metal flush with the inner surface of the mold body, and it is easily damaged. Ta.
（発明が解決しようとする課題）
そこで、本発明は、取扱が容易であると共に、成形品表
面に真空吸引孔の跡が残らない金型を提供することを目
的とする。(Problems to be Solved by the Invention) Therefore, an object of the present invention is to provide a mold that is easy to handle and leaves no traces of vacuum suction holes on the surface of the molded product.
（課題を解決するための手段）
この目的を達成するため、本発明は、内面に真空吸引孔
を有する金型本体と、この真空吸引孔内部に埋め込まれ
た金属部品からなり、金型本体と金属部品の間に平均０
．３ｍｍ以下の真空吸引用間隙を有し、金型本体内面と
金属部品表面が面一であることを特徴とするプラスチッ
ク成形用金型を提供する。(Means for Solving the Problems) In order to achieve this object, the present invention consists of a mold body having a vacuum suction hole on the inner surface, and a metal part embedded inside the vacuum suction hole. Average 0 between metal parts
．． To provide a mold for plastic molding, which has a vacuum suction gap of 3 mm or less and is characterized in that the inner surface of a mold body and the surface of a metal part are flush with each other.
（作用）
本発明にかかる金型は、まず、金型本体と金属部品の間
の間隙を通して真空吸引孔により所定のラベルを吸着し
、次いで金型を閉じ、プラスチックを成形すると同時に
ラベルを成形品表面に固定して使用する。(Function) The mold according to the present invention first adsorbs a predetermined label with a vacuum suction hole through the gap between the mold body and the metal part, then closes the mold, and simultaneously molds the plastic and attaches the label to the molded product. Use by fixing it to a surface.
金型本体の内面と金属部品とは面一に形成されており、
両者の間隙は０．３ｍｍ以下に過ぎないので、成形品表
面にはかかる間隙の跡が実質的に残らない。The inner surface of the mold body and the metal parts are flush with each other,
Since the gap between the two is only 0.3 mm or less, substantially no trace of the gap remains on the surface of the molded product.
（発明の詳細な
説明にかかる金型は、第３図に示すように、プラスチッ
クの中空成形に用いることができる。(The mold according to the detailed description of the invention can be used for blow molding plastics, as shown in FIG. 3.
第３図において、（１）は金型本体、（２）は金属部品
で、この両者により本発明の金型が構成されている。金
型本体（１）はその内面から図示しない外部の真空ポン
プに接続する連続した真空吸引孔（１１）を有している
。また、この真空吸引孔（１１）の金型本体（１）内面
側に金属部品（２）が埋め込まれている。Ａはラベル、
Ｂは押出成形されたプラスチックのパリソンである。In FIG. 3, (1) is a mold body, and (2) is a metal part, both of which constitute the mold of the present invention. The mold body (1) has a continuous vacuum suction hole (11) connected from its inner surface to an external vacuum pump (not shown). Further, a metal part (2) is embedded in the inner surface of the mold body (1) of the vacuum suction hole (11). A is label,
B is an extruded plastic parison.
金型は、まず、金型本体（１）内面と金属部品（２）の
間の間隙を通じて真空吸引孔（１１）からラベルＡを吸
着し、金型内面に保持する０次いで、金型を閉じると共
にパリソンＢを収容し、パリソンＢの上端を切断した後
、図示しないブロービンをパリソンＢ上端にさし込み、
圧縮空気を吹き込む。圧縮空気の吹き込みによりパリソ
ンＢが膨らみ、金型内面に押しつけられて成形され、同
時にラベルＡが接着固定される。The mold first adsorbs the label A from the vacuum suction hole (11) through the gap between the inner surface of the mold body (1) and the metal part (2) and holds it on the inner surface of the mold.Then, the mold is closed. After storing the parison B together with the parison B and cutting the upper end of the parison B, insert a blowbin (not shown) into the upper end of the parison B,
Blow in compressed air. Parison B is inflated by blowing compressed air and is pressed against the inner surface of the mold to be molded, and at the same time, label A is adhesively fixed.
金型の要部は第１図に示されている。すなわち金属部品
（２）の周辺である。また、金属部品の外形は第２図の
斜視図に示されている。The main parts of the mold are shown in FIG. That is, the area around the metal part (2). Further, the outer shape of the metal part is shown in the perspective view of FIG.
金属部品（２）は、第２図に示すように、大径部（２１
）と小径部（２２）を有している。The metal part (2) has a large diameter part (21) as shown in FIG.
) and a small diameter portion (22).
大径部（２１）は金型本体（１）の真空吸引孔（１１）
内部に密着して金属部品（２）が揺動することなく固定
するためのもので、真空吸引孔（１１）の径と同一か、
またはわずかに大きく形成されている１例えば、真空吸
引孔（１１）の径が１０．００ｍｍである時には、大径
部（２１）の径は１０．００〜１０．０５ｍｍである。The large diameter part (21) is the vacuum suction hole (11) of the mold body (1)
This is to tightly fit inside and fix the metal part (2) without swinging, and is the same diameter as the vacuum suction hole (11), or
For example, when the diameter of the vacuum suction hole (11) is 10.00 mm, the diameter of the large diameter portion (21) is 10.00 to 10.05 mm.
大径部（２１）には、真空吸引時の空気の流通を確保す
るため、その側面の一部に切り欠け（２３）が設けられ
ている。切り欠け（２３）は大径部（２１）の上下を連
通ずるものであれば任意の形状で良い。A notch (23) is provided in a part of the side surface of the large diameter portion (21) to ensure air circulation during vacuum suction. The notch (23) may have any shape as long as it communicates between the upper and lower portions of the large diameter portion (21).
小径部（２２）は、必要最小限の間隙を金型本体（１）
と金属部品（２）の間に形成して、成形品表面にその跡
を残すことなく、しかもラベルＢの真空染着を可能とす
るものである。金型本体（１）と金属部品（２）の間の
間隙を平均０１３ｍｍ以下とするため、真空吸引孔（１
１）の径より０．６ｍｍ小さい種以上でなければならな
い。The small diameter part (22) has the minimum necessary gap between the mold body (1)
and the metal part (2) to enable vacuum dyeing of the label B without leaving any traces on the surface of the molded product. In order to keep the gap between the mold body (1) and the metal part (2) to an average of 0.13 mm or less, vacuum suction holes (1
It must be at least 0.6 mm smaller in diameter than 1).
また、空気の流通を確保するため、真空吸引孔（１１）
の径より０．０４ｍｍ小さい橿原下であることが望まし
い０例えば、真空吸引孔（１１）の径が１０．００ｍｍ
である場合には、小径部（２２）の径は９．４０〜９．
９６ｍｍである。In addition, to ensure air circulation, a vacuum suction hole (11) is provided.
For example, if the diameter of the vacuum suction hole (11) is 10.00 mm, the diameter of the vacuum suction hole (11) is preferably 0.04 mm smaller than the diameter of
In this case, the diameter of the small diameter portion (22) is between 9.40 and 9.40.
It is 96mm.
なお、金属部品（２）を真空吸引孔（１１）に埋め込む
時の便のため、金属部品（２）の先端、すなわち、大径
部（２１）側の先端（２４）はテーパー状に形成されて
いる。In addition, for convenience when embedding the metal part (2) into the vacuum suction hole (11), the tip of the metal part (2), that is, the tip (24) on the large diameter part (21) side, is formed into a tapered shape. ing.
かかる金属部品は、金型本体（１）と同様の金属で製造
することができる０例えば鉄である。また、アルミニウ
ムによって製造することもできる。Such metal parts can be made of the same metal as the mold body (1), for example iron. It can also be manufactured from aluminum.
金属部品（２）は、大径部（２Ｉ）側を金型本体（１）
に対向させて、金型本体（１）内面側からハンマー等で
打ち込むことにより、真空吸引孔（１１）に埋め込むこ
とができる。埋め込む際には、金属部品（２）と金型本
体（１）の内面が面一になるように埋め込む必要はない
が、これに近い状態まで埋め込むことが望ましい。The metal part (2) has the large diameter part (2I) side facing the mold body (1).
It can be embedded in the vacuum suction hole (11) by driving it with a hammer or the like from the inner surface of the mold body (1) facing the mold body (1). When embedding, it is not necessary to embed so that the metal part (2) and the inner surface of the mold body (1) are flush with each other, but it is desirable to embed to a state close to this.
金属部品（２）を埋め込み、表面研磨加工を施した後、
所定のサンドブラスト加工を金型内面に施すことにより
、金属部品（２）と金型本体（１）の内面を面一とする
ことができる０両者を面一とすることにより、凹凸がな
くなり、成形品表面を平滑なものとすることができる。After embedding the metal part (2) and performing surface polishing,
By applying a specified sandblasting process to the inner surface of the mold, the inner surfaces of the metal part (2) and the mold body (1) can be made flush. By making both flush, unevenness is eliminated and molding is improved. The surface of the product can be made smooth.
なお、金型本体（１）と金属部品（２）が同一の材質ま
たは同程度の硬度を存する材質から成る場合、研磨加工
とサンドブラストにより面一に加工することが容易とな
る。In addition, when the mold body (1) and the metal part (2) are made of the same material or a material having the same degree of hardness, it is easy to process them flush by polishing and sandblasting.
なお、プラスチックとしてはポリエチレンやポリプロピ
レン等のポリオレフィン、ポリエステル、ポリ塩化ビニ
リデン等が使用できる。また、ラベルＡは周知のもので
良く、紙やプラスチックフィルム等の基体シート表面に
印刷絵柄等を設けると共に裏面に接着剤層を設けたもの
等が使用できる。Note that as the plastic, polyolefins such as polyethylene and polypropylene, polyester, polyvinylidene chloride, etc. can be used. Further, the label A may be a well-known label, such as one having a printed pattern on the surface of a base sheet such as paper or a plastic film, and an adhesive layer on the back surface.
以上中空成形を例として説明したが、その趣旨が同一で
ある限り他のプラスチック成形についても使用できるこ
とは明らかである。Although blow molding has been described above as an example, it is clear that other plastic moldings can be used as long as the purpose is the same.
（実施例） （ｉ）金型本体。(Example) (i) Mold body.
金型本体はアルミニウム製のもので、内面に内径１０．
００ｍｍの真空吸引孔が多数露出したものを使用した。The mold body is made of aluminum and has an inner diameter of 10mm on the inside.
The one in which many 00 mm vacuum suction holes were exposed was used.
（１１）金属部品。(11) Metal parts.
金属部品は第２図に示す形状のアルミニウム製のもので
、以下の如く製造した。The metal parts were made of aluminum and had the shape shown in FIG. 2, and were manufactured as follows.
すなわち、まず外径１０．０２ｍｍの円柱を長さ１５．
００ｍｍに切断した。一方の端面から長さ５．００ｍｍ
の範囲を旋盤加工により外径９゜９０ｍｍとなるように
切削して小径部（２２）とした、そののち、外径が１０
．０２ｍｍの部分（大径部（２１））に左右対象となる
ように１゜００ｍｍの切削加工を施して切り欠け（２３
）とした。最後に先端部（２４）をテーパー状に切削し
た。That is, first, a cylinder with an outer diameter of 10.02 mm and a length of 15.
It was cut into 00 mm. Length 5.00mm from one end surface
The area was cut with a lathe to an outer diameter of 9°90 mm to form a small diameter part (22), and then the outer diameter was 10 mm.
．． The 02mm portion (large diameter part (21)) is symmetrically cut by 1°00mm to create a notch (23
). Finally, the tip (24) was cut into a tapered shape.
（ｉｊ）金型。(ij) Mold.
金型本体の真空吸引孔に、金型内面から金属部品を埋め
込んだ。埋め込みは、金属部品の先端部が金型本体に向
かい合うように配置して、木ハンマーにより打ち込むこ
とによって行なった。また、金属部品は、金属部品の表
面と金型本体の内面が路面−となるまで十分に埋め込ん
だ。Metal parts were embedded from the inside of the mold into the vacuum suction holes in the mold body. The embedding was performed by arranging the tip of the metal part so as to face the mold body and driving it in with a wooden hammer. Further, the metal parts were sufficiently embedded until the surface of the metal parts and the inner surface of the mold body became the same as the road surface.
その後、この内面に所定のサンドブラスト加工を行い、
金型とした。After that, a prescribed sandblasting process is performed on this inner surface,
It was made into a mold.
（１■）ラベル。(1■) Label.
ラベルは未延伸ポリプロピレンフィルム表面に印刷絵柄
を設け、裏面に低密度ポリエチレン樹脂を接着剤として
設けたものを用いた。The label used was one in which a printed pattern was provided on the surface of an unstretched polypropylene film, and a low-density polyethylene resin was provided as an adhesive on the back surface.
（ｖ）成形。(v) Molding.
成形装置は、特開平２−４６２８号実施例１に記載のも
のを使用した。The molding apparatus described in Example 1 of JP-A No. 2-4628 was used.
すなわち、ラベルを多数枚積層してラベルマガジンに収
容し、ローグー側面の吸着部材により一枚ずつ抜き取っ
た９次いでローダ−を伸長して、金型内面に押しつけ、
真空吸引孔により吸引し、ローダーを後退させた。金型
を移動し、筒状に押出成形されたパリソンをくわえて切
断した。さらに金型を吹き込み成形位置に移動し、ブロ
ーピンを挿入し、圧縮空気を吹き込んで中空成形し、同
時にラベルを接着固定した。この工程を繰り返して多数
の成形品を製造した。That is, a large number of labels are stacked and stored in a label magazine, and the labels are pulled out one by one by a suction member on the side of the roller.The loader is then extended and pressed against the inner surface of the mold.
Suction was applied through the vacuum suction hole and the loader was retracted. The mold was moved, and the parison extruded into a cylindrical shape was held in its mouth and cut. Furthermore, the mold was moved to the blow molding position, a blow pin was inserted, and compressed air was blown into the mold to perform blow molding, and at the same time, the label was fixed with adhesive. This process was repeated to produce a large number of molded products.
なお、パリソンはラベルの接着剤層に接着力のあるポリ
エチレンを使用した。In addition, the parison used polyethylene, which has adhesive strength, for the adhesive layer of the label.
（ｖｉ）結果。(vi) Results.
得られた成形品表面には、真空吸引孔の跡は肉眼では認
められなかった。念のため、凹凸の有無とその高さを測
定すると、高さ方向において平均０．０１７ｍｍの跡が
認められた。No traces of vacuum suction holes were observed with the naked eye on the surface of the obtained molded product. Just to be sure, when we measured the presence or absence of unevenness and its height, we found marks with an average size of 0.017 mm in the height direction.
なお、比較のため、金属部品を用いることなく、同様の
実験を行なったところ、成形品表面には高さ方向におい
て平均０．１８３ｍｍの真空吸引孔の跡が認められ、肉
眼によってもはっきりと確認することができた。For comparison, a similar experiment was conducted without using metal parts, and traces of vacuum suction holes with an average size of 0.183 mm in the height direction were observed on the surface of the molded product, which could be clearly seen with the naked eye. We were able to.
（効果）
以上のように、本発明によれば、プラス千ツク成形品の
製造と同時にラベルを貼着する方法に使用する金型であ
って、成形品表面に実質的に真空吸引孔の跡が残らず、
しかも取扱に便利な金型を得ることができる。(Effects) As described above, according to the present invention, there is provided a mold for use in a method for attaching a label at the same time as manufacturing a plastic molded product, and the molded product has substantially no trace of vacuum suction holes on the surface of the molded product. There is no left,
Furthermore, a mold that is convenient to handle can be obtained.
第１図は本発明に係る金型の要部断面図、第２回は金属
部品の斜視図、第３図はプラスチック成形工程の説明図
である。
（１）−・−金型本体 （１１）・・−真空吸引孔（
２）−・−金属部品 （２１）−・−大径部（２２１
ｍ−・−小径部 （２３） −切り欠け（２４）・−
先端部
Ａ−ｍ−ラベル Ｂ−・−パリソン第２図
第１図
第３図FIG. 1 is a sectional view of a main part of a mold according to the present invention, the second is a perspective view of a metal part, and FIG. 3 is an explanatory diagram of a plastic molding process. (1)--Mold body (11)--Vacuum suction hole (
2) --- Metal parts (21) --- Large diameter part (221
m-・- Small diameter part (23) - Notch (24)・-
Tip A-m-Label B-・-Parison Fig. 2 Fig. 1 Fig. 3
Claims (1)
吸引孔内部に埋め込まれた金属部品からなり、金型本体
と金属部品の間に平均０．３ｍｍ以下の真空吸引用間隙
を有し、金型本体内面と金属部品表面が面一であること
を特徴とするプラスチック成形用金型。(1) Consists of a mold body with a vacuum suction hole on the inner surface and a metal part embedded inside the vacuum suction hole, with an average vacuum suction gap of 0.3 mm or less between the mold body and the metal part. A mold for plastic molding, characterized in that the inner surface of the mold body and the surface of the metal part are flush with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2227510A JP3021578B2 (en) | 1990-08-28 | 1990-08-28 | Plastic mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2227510A JP3021578B2 (en) | 1990-08-28 | 1990-08-28 | Plastic mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04107121A true JPH04107121A (en) | 1992-04-08 |
| JP3021578B2 JP3021578B2 (en) | 2000-03-15 |
Family
ID=16862034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2227510A Expired - Fee Related JP3021578B2 (en) | 1990-08-28 | 1990-08-28 | Plastic mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3021578B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963272A (en) * | 2014-04-17 | 2014-08-06 | 江苏维达机械有限公司 | Blow molding cavity structure for labeling in mold for injection blow molding machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332798C (en) * | 2003-11-21 | 2007-08-22 | 陈高府 | Coiled marking take/put mechanism |
-
1990
- 1990-08-28 JP JP2227510A patent/JP3021578B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963272A (en) * | 2014-04-17 | 2014-08-06 | 江苏维达机械有限公司 | Blow molding cavity structure for labeling in mold for injection blow molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3021578B2 (en) | 2000-03-15 |
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