JPH06304956A - Blow molding gas nozzle - Google Patents
Blow molding gas nozzleInfo
- Publication number
- JPH06304956A JPH06304956A JP11932393A JP11932393A JPH06304956A JP H06304956 A JPH06304956 A JP H06304956A JP 11932393 A JP11932393 A JP 11932393A JP 11932393 A JP11932393 A JP 11932393A JP H06304956 A JPH06304956 A JP H06304956A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- nozzle
- gas nozzle
- sheath tube
- passage
- 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
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
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1734—Nozzles therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金型内への溶融樹脂の
射出と加圧ガスの圧入を行うことによって中空成形品を
成形する中空成形用のガスノズルに関する。更に詳しく
は、この中空成形において、加圧ガスを直接金型内に圧
入するためのガスノズルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow molding gas nozzle for molding a hollow molded article by injecting a molten resin into a mold and pressurizing a pressurized gas. More specifically, the present invention relates to a gas nozzle for directly pressurizing a pressurized gas into a mold in this hollow molding.
【０００２】[0002]
【従来の技術】従来、金型内への溶融樹脂の射出と加圧
ガスの圧入を行う中空成形において、金型内に直接加圧
ガスを圧入するためのガスノズルとしては、金型内まで
貫通して金型に形成した孔内又はこの孔に嵌め込んだ管
材内に、外部から軸方向にスライドさせることができる
棒状の芯材を差し込み、この芯材の移動によってノズル
口を開閉できるようにすると共に、孔又は管材と芯材の
間に残された隙間をガス通路としたものが知られている
（特開昭６４−１４０１２号、特開平３−１６４２２２
号）。2. Description of the Related Art Conventionally, in blow molding in which a molten resin is injected into a mold and a pressurized gas is injected, a gas nozzle for directly injecting a pressurized gas into the mold penetrates into the mold. Then, insert a rod-shaped core material that can be slid in the axial direction from the outside into the hole formed in the mold or into the pipe material fitted in this hole so that the nozzle port can be opened and closed by the movement of this core material. In addition, it is known that a hole or a gap left between a pipe material and a core material is used as a gas passage (Japanese Patent Laid-Open No. 64-14012 and Japanese Patent Laid-Open No. 3-164222).
issue).
【０００３】即ち、溶融樹脂の射出時にはノズル口を閉
じて、ガス通路への溶融樹脂の侵入を防止し、加圧ガス
の圧入時及び排出時にノズル口を開けて加圧ガスの圧入
及び排出ができるようにしたものとなっている。That is, when the molten resin is injected, the nozzle port is closed to prevent the molten resin from entering the gas passage, and when the pressurized gas is pressed and discharged, the nozzle port is opened to allow the pressurized gas to be pressed and discharged. It is made possible.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来のガスノズルでは、金型に形成した孔又はこの孔に嵌
め込んだ管材内に芯材を挿入し、この芯材を外部から軸
方向にスライドさせてノズル口を開閉する機構が必要と
なるので、構造が複雑で保守管理がしにくい問題があ
る。However, in the above-mentioned conventional gas nozzle, the core material is inserted into the hole formed in the mold or the pipe material fitted in the hole, and the core material is slid from the outside in the axial direction. Since a mechanism for opening and closing the nozzle opening is required, the structure is complicated and maintenance is difficult.
【０００５】また、上記孔又は管材の全長に亙って芯材
が挿入されていて、この孔又は管材と芯材間に形成され
るガス通路が狭く長いため、ガスの通過抵抗が大きい。
従って、特に圧入した加圧ガスを排出する時に、この排
出時間が長くなり、成形サイクルが延びてしまう問題が
ある。Further, since the core material is inserted over the entire length of the hole or the pipe material and the gas passage formed between the hole or the pipe material and the core material is narrow and long, the gas passage resistance is large.
Therefore, there is a problem that the discharging time becomes long and the molding cycle is lengthened particularly when the pressurized gas that has been press-fitted is discharged.
【０００６】本発明は、このような従来の問題点に鑑み
てなされたもので、ガスノズルの構造を簡略化すると共
に、ガスの通過抵抗を最小限に抑え、当該ガスノズルを
介しての加圧ガスの排出時間を短縮することを目的とす
る。The present invention has been made in view of such conventional problems, and simplifies the structure of the gas nozzle and minimizes the passage resistance of the gas so that the gas under pressure through the gas nozzle is pressurized. The purpose is to shorten the discharge time.
【０００７】[0007]
【課題を解決するための手段】このために本発明で講じ
られた手段を図１で説明すると、請求項１の本発明で
は、鞘管１と、この鞘管１の先端部に装入された栓体２
との間に、鞘管１内外を連通させる隙間を形成し、この
隙間の少なくとも外端側を、溶融樹脂は侵入させないが
ガスの通過は許容する大きさのノズル口通路３とした中
空成形用ガスノズルＡとすることによって上記目的を達
成しているものである。The means taken in the present invention for this purpose will be described with reference to FIG. 1. In the present invention of claim 1, the sheath tube 1 and the tip portion of the sheath tube 1 are loaded. Plug 2
A hollow space for communicating the inside and the outside of the sheath pipe 1, and at least the outer end side of this space is made into a nozzle opening passage 3 of a size that does not allow molten resin to enter but allows gas passage. By using the gas nozzle A, the above object is achieved.
【０００８】また、請求項２の発明では、図６に示され
るように、鞘管１の先端部に装入された栓体２に、鞘管
１内外を連通させる貫通孔を穿設し、この貫通孔の少な
くとも外端側を、溶融樹脂は侵入させないがガスの通過
は許容する大きさのノズル口通路３とした中空成形用ガ
スノズルとすることによって上記目的を達成しているも
のである。According to the second aspect of the present invention, as shown in FIG. 6, a through hole for communicating the inside and outside of the sheath tube 1 is bored in the plug body 2 inserted in the distal end of the sheath tube 1. The above object is achieved by forming a hollow molding gas nozzle in which at least the outer end side of the through hole has a nozzle port passage 3 of a size that does not allow molten resin to enter but allows gas to pass therethrough.
【０００９】[0009]
【実施例及び作用】まず、図１〜図３に基づいて、本発
明に係るガスノズルＡの第１の実施例を説明する。First Embodiment A gas nozzle A according to a first embodiment of the present invention will be described with reference to FIGS.
【００１０】図１に示されるように、鞘管１の先端部に
は栓体２が装入されている。As shown in FIG. 1, the tip of the sheath tube 1 has a plug 2 inserted therein.
【００１１】栓体２は、図１及び図２に明示されるよう
に、鞘管１内に装入された軸部５と、軸部５の外端側に
設けられ、軸部５より大径の頭部６とから構成されてい
る。As shown in FIGS. 1 and 2, the plug 2 is provided on the shaft portion 5 inserted in the sheath tube 1 and on the outer end side of the shaft portion 5, and is larger than the shaft portion 5. It is composed of a head 6 having a diameter.
【００１２】栓体２の軸部５にはねじ部７が形成されて
いて、鞘管１にねじ込まれている。また、ねじ部７の基
部周方向と軸方向には溝が形成されており、この溝によ
って鞘管１と栓体２間に形成された隙間がガス通路４と
なっている。このガス通路４は、鞘管１内と後述するノ
ズル口通路４を連通させるもので、できるだけガスの通
過抵抗を小さくするため、許容できる範囲で大きいこと
が好ましい。A screw portion 7 is formed on the shaft portion 5 of the plug body 2 and is screwed into the sheath tube 1. Further, a groove is formed in the circumferential direction and the axial direction of the base of the screw portion 7, and the gap formed between the sheath tube 1 and the plug body 2 by this groove serves as the gas passage 4. The gas passage 4 connects the inside of the sheath pipe 1 to the nozzle port passage 4 described later, and is preferably large within an allowable range in order to reduce the gas passage resistance as much as possible.
【００１３】鞘管１の先端面には、図１及び図３に示さ
れるように、ノズル口通路４となる隙間を構成する浅い
溝が形成されている。この鞘管１先端面に形成されたノ
ズル口通路４は、金型９（図４参照）内に開口するもの
で、溶融樹脂は侵入させないがガスの通過は許容する大
きさとなっている。このノズル口通路４を構成する溝の
深さ（隙間の幅）は、０．２〜０．０３ｍｍであること
が好ましく、更に好ましくは０．１〜０．０５である。As shown in FIGS. 1 and 3, a shallow groove is formed on the front end surface of the sheath tube 1 to form a gap to be the nozzle port passage 4. The nozzle port passage 4 formed on the front end surface of the sheath tube 1 opens into the mold 9 (see FIG. 4), and has a size that does not allow molten resin to enter but allows passage of gas. The depth (width of the gap) of the groove forming the nozzle port passage 4 is preferably 0.2 to 0.03 mm, more preferably 0.1 to 0.05.
【００１４】尚、図１及び図２において８は凹部で、栓
体２をねじ込むためのレンチ孔を兼ねているものであ
る。In FIGS. 1 and 2, reference numeral 8 denotes a recess, which also serves as a wrench hole into which the plug 2 is screwed.
【００１５】上記本ガスノズルＡは、図４に示されるよ
うに、先端をやや金型９内に突出させて金型９に取り付
けられるものである。As shown in FIG. 4, the main gas nozzle A is attached to the mold 9 with its tip slightly protruding into the mold 9.
【００１６】加圧ガスの圧入に先立って、金型９内には
溶融樹脂が射出されるが、本ガスノズルＡにおける先端
部のノズル口通路３は上記のように溶融樹脂を侵入させ
ない大きさであるるので、この溶融樹脂射出時に溶融樹
脂が本ガスノズルＡ内に侵入することが防止される。Prior to the pressurization of the pressurized gas, the molten resin is injected into the mold 9, but the nozzle port passage 3 at the tip of the gas nozzle A is of a size that does not allow the molten resin to enter as described above. Therefore, the molten resin is prevented from entering the main gas nozzle A during the injection of the molten resin.
【００１７】特にノズル口通路３は、鞘管１とこれに装
入された栓体２間のごく短い範囲の隙間であるため、加
工も容易で、確実な溶融樹脂の侵入防止効果が得やす
い。In particular, since the nozzle port passage 3 is a gap in a very short range between the sheath tube 1 and the plug body 2 inserted therein, it is easy to process and it is easy to obtain a reliable molten resin intrusion prevention effect. .
【００１８】加圧ガスの圧入は、本ガスノズルＡの後端
に接続された加圧ガス源（図示されていない）によって
行われる。Pressurization of the pressurized gas is performed by a pressurized gas source (not shown) connected to the rear end of the main gas nozzle A.
【００１９】本実施例に係るガスノズルＡの場合、鞘管
１の先端と栓体２の頭部６との間に形成されたノズル口
通路３を介して加圧ガスが供給されるので、加圧ガスは
本ガスノズルＡの先端部から横方向に噴出することにな
る。In the case of the gas nozzle A according to this embodiment, since the pressurized gas is supplied through the nozzle port passage 3 formed between the tip of the sheath tube 1 and the head 6 of the plug body 2, it is added. The pressurized gas is jetted laterally from the tip of the gas nozzle A.
【００２０】即ち、加圧ガスが成形品の肉厚方向ではな
く、成形品の面方向に向かって圧入されるので、薄肉成
形品に中空部１０を形成する場合でも加圧ガスが広がり
やすく、中空部１０が形成しやすい利点がある。That is, since the pressurized gas is injected not in the thickness direction of the molded product but in the surface direction of the molded product, the pressurized gas tends to spread even when the hollow portion 10 is formed in the thin molded product, There is an advantage that the hollow portion 10 is easily formed.
【００２１】中空部１０を形成した後に行われる、中空
部１０内の加圧ガスの排出は、本ガスノズルＡの接続
を、加圧ガス源から回収タンク（図示されていない）も
しくは大気開放に切り換えることで、ガスノズルＡを介
して行われる。The discharge of the pressurized gas in the hollow portion 10 performed after forming the hollow portion 10 switches the connection of the main gas nozzle A from the pressurized gas source to a recovery tank (not shown) or to the atmosphere. Therefore, it is performed through the gas nozzle A.
【００２２】ところで、本ガスノズルＡにおけるノズル
口通路３は、鞘管１の先端部と栓体２の頭部６間のごく
短い範囲のものである。加えて、鞘管１内には何らガス
の流れを阻害する障害物が存在しないばかりか、この鞘
管１内とノズル口通路３を結ぶガス通路４も許容できる
範囲で大きく形成することができる。従って、いわば鞘
管１内の全長に亙ってガス通路が狭められている従来の
ガスノズルに比して、ガスの通過抵抗が著しく小さく、
ガスの排出に要する時間を大幅に短縮することができ
る。By the way, the nozzle port passage 3 in the present gas nozzle A has a very short range between the tip of the sheath tube 1 and the head 6 of the plug 2. In addition, not only there are no obstacles that hinder the flow of gas in the sheath tube 1, but also the gas passage 4 connecting the inside of the sheath tube 1 and the nozzle port passage 3 can be formed in a large size within an allowable range. . Therefore, as compared with the conventional gas nozzle in which the gas passage is narrowed over the entire length of the sheath tube 1, so to speak, the gas passage resistance is significantly smaller,
The time required to discharge the gas can be significantly reduced.
【００２３】一方、栓体２の頭部に凹部８（図１、図２
及び図４参照）を設けた場合、図５（ａ）に示されるよ
うに、成形品に残される本ガスノズルＡ（図４参照）の
先端部跡には凸部１１が形成される。成形品を金型９
（図４参照）から取り出した後、熱コテ等でこの凸部１
１を図５（ｂ）に示されるように潰せば、中空部１０の
開口部１２を塞いで中空部１０を密閉することができ、
中空部１０内への水分の浸入等を防止することができ
る。On the other hand, a recess 8 (see FIGS. 1 and 2) is formed on the head of the plug body 2.
4) is provided, as shown in FIG. 5A, a convex portion 11 is formed on the trace of the tip of the main gas nozzle A (see FIG. 4) left in the molded product. Mold 9
(See Fig. 4) After removing from
By crushing 1 as shown in FIG. 5B, the opening 12 of the hollow portion 10 can be closed to seal the hollow portion 10,
It is possible to prevent water from entering the hollow portion 10.
【００２４】図１〜図３に示される第１の実施例におい
て、ノズル口通路３となる隙間を形成するための溝とガ
ス通路４となる隙間を形成するための溝は、鞘管１の先
端面と栓体２のねじ部７に形成しているが、これは栓体
２の頭部６の鞘管１側の面と鞘管１の内周面形成するこ
ととしてもよい。また、栓体２の頭部６を鞘管２の先端
面からやや浮かせておき、これによって残される隙間を
ノズル口通路３とすれば、鞘管１の先端面に形成する溝
を省略することもできる。In the first embodiment shown in FIGS. 1 to 3, the groove for forming the gap which becomes the nozzle port passage 3 and the groove for forming the gap which becomes the gas passage 4 are formed in the sheath tube 1. The tip surface and the threaded portion 7 of the plug 2 are formed, but this may be formed on the surface of the head 6 of the plug 2 on the side of the sheath tube 1 and the inner peripheral surface of the sheath tube 1. Further, if the head portion 6 of the plug body 2 is slightly floated from the tip end surface of the sheath tube 2 and the gap left by this is the nozzle port passage 3, the groove formed on the tip end surface of the sheath tube 1 can be omitted. You can also
【００２５】更に、第１の実施例においては、栓体２を
鞘管１にねじ込んで装入しているが、栓体２を鞘管１に
嵌め込むことで装入してもよい。Furthermore, in the first embodiment, the plug 2 is inserted into the sheath pipe 1 by screwing, but the plug 2 may be inserted into the sheath pipe 1 to be inserted.
【００２６】次に、図６に基づいて、本発明に係るガス
ノズルＡの第２の実施例を説明する。Next, a second embodiment of the gas nozzle A according to the present invention will be described with reference to FIG.
【００２７】基本的には図１〜図３で説明した第１の実
施例と同様であるが、ノズル口通路３及びガス通路４が
栓体２に形成された貫通孔として形成されている点が相
違している。Basically, it is similar to the first embodiment described with reference to FIGS. 1 to 3, but the nozzle port passage 3 and the gas passage 4 are formed as through holes formed in the plug body 2. Are different.
【００２８】このノズル口通路３を形成する貫通孔は、
前述の溝（図１〜図３参照）と同様に、溶融樹脂は侵入
させないが、ガスの通過は許容する大きさとなってい
る。具体的には、直径が０．２〜０．０３ｍｍであるこ
とが好ましく、更に好ましくは０．１〜０．０５ｍｍで
ある。また、ガス通路４を構成する貫通孔は、許容でき
る範囲で大きいことが好ましい。The through hole forming the nozzle port passage 3 is
Similar to the above-mentioned groove (see FIGS. 1 to 3), the molten resin does not enter, but has a size that allows passage of gas. Specifically, the diameter is preferably 0.2 to 0.03 mm, more preferably 0.1 to 0.05 mm. Further, it is preferable that the through hole forming the gas passage 4 is as large as possible.
【００２９】更に、図７に基づいて、本発明に係るガス
ノズルＡの第３の実施例を説明する。Further, a third embodiment of the gas nozzle A according to the present invention will be described with reference to FIG.
【００３０】本実施例に係るガスノズルＡは、前述の第
１の実施例における栓体２の頭部６（図１及び図２参
照）を省略し、鞘管１と栓体２間の隙間の内、外側を狭
いノズル口通路３とし、内側を広いガス通路４としたも
のである。In the gas nozzle A according to this embodiment, the head 6 (see FIGS. 1 and 2) of the plug 2 in the first embodiment is omitted, and the gap between the sheath tube 1 and the plug 2 is eliminated. The inside and outside are narrow nozzle passages 3, and the inside is a wide gas passage 4.
【００３１】本実施例の場合、ガス通路となっている溝
部３が本ガスノズルＡの軸方向に開口しているので、加
圧ガスは成形品の肉厚方向に向かって圧入されることに
なる。従って、厚肉の成形品に中空部１０（図４参照）
を形成する時に、肉厚の深部に中空部１０を形成しやす
い利点がある。また、凹部８によって形成される凸部１
１（図５参照）を用いて中空部１０（図５参照）を密閉
する場合。凸部１１の基部に中空部１０の開口部１２
（図５参照）が位置することになるので、密閉しやす
い。In the case of this embodiment, since the groove portion 3 serving as the gas passage is opened in the axial direction of the main gas nozzle A, the pressurized gas is forced in the thickness direction of the molded product. . Therefore, the hollow portion 10 (see FIG. 4) is formed in the thick molded product.
There is an advantage that it is easy to form the hollow portion 10 in the deep portion of the wall thickness when forming. In addition, the convex portion 1 formed by the concave portion 8
When the hollow portion 10 (see FIG. 5) is sealed with 1 (see FIG. 5). The opening 12 of the hollow portion 10 is provided at the base of the protrusion 11.
(See FIG. 5) is located, so it is easy to seal.
【００３２】尚、このような方向に向かって加圧ガスを
圧入するためには、図６に示される第２の実施例におい
て、貫通孔４を栓体２の軸方向に貫通するものとしても
よい。In order to pressurize the pressurized gas in such a direction, in the second embodiment shown in FIG. 6, the through hole 4 may be penetrated in the axial direction of the plug body 2. Good.
【００３３】[0033]
【発明の効果】本発明は、以上説明した通りのものであ
り、鞘管１とその先端に装入される栓体２という極めて
単純な構成のガスノズルＡであるので、保守管理が容易
である。また、ガスの通過抵抗が小さいので、加圧ガス
の排出時間を短縮でき、その分成形サイクルを短縮して
成形効率を向上させることができるものである。The present invention is as described above, and since it is the gas nozzle A having a very simple structure, that is, the sheath tube 1 and the plug body 2 inserted at the tip thereof, maintenance management is easy. . Further, since the gas passage resistance is small, the time required for discharging the pressurized gas can be shortened, and the molding cycle can be shortened accordingly, and the molding efficiency can be improved.
【図１】本発明に係るガスノズルの第１の実施例を示す
断面図である。FIG. 1 is a sectional view showing a first embodiment of a gas nozzle according to the present invention.
【図２】栓体の拡大斜視図である。FIG. 2 is an enlarged perspective view of a plug body.
【図３】鞘管先端部の拡大斜視図である。FIG. 3 is an enlarged perspective view of the distal end portion of the sheath tube.
【図４】本発明に係るガスノズルの使用状態を示す断面
図である。FIG. 4 is a cross-sectional view showing a usage state of the gas nozzle according to the present invention.
【図５】凹部を設けることによって得られる利益の説明
図である。FIG. 5 is an explanatory diagram of a profit obtained by providing a concave portion.
【図６】本発明に係るガスノズルの第２の実施例を示す
断面図である。FIG. 6 is a sectional view showing a second embodiment of the gas nozzle according to the present invention.
【図７】本発明に係るガスノズルの第３の実施例を示す
斜視図である。FIG. 7 is a perspective view showing a third embodiment of the gas nozzle according to the present invention.
Ａ ガスノズル １ 鞘管 ２ 栓体 ３ ノズル口通路 ４ ガス通路 ５ 軸部 ６ 頭部 ７ ねじ部 ８ 凹部 ９ 金型 １０ 中空部 １１ 凸部 １２ 開口部 A gas nozzle 1 sheath tube 2 plug body 3 nozzle opening passage 4 gas passage 5 shaft portion 6 head portion 7 screw portion 8 concave portion 9 mold 10 hollow portion 11 convex portion 12 opening portion
Claims (6)
栓体との間に、鞘管内外を連通させる隙間が形成されて
おり、この隙間の少なくとも外端側が、溶融樹脂は侵入
させないがガスの通過は許容する大きさのノズル口通路
となっていることを特徴とする中空成形用ガスノズル。1. A gap for communicating the inside and outside of the sheath pipe is formed between the sheath pipe and a plug inserted at the tip of the sheath pipe, and at least the outer end side of the gap is a molten resin. A gas nozzle for hollow forming characterized in that it has a nozzle opening passage of a size that does not allow gas to pass through but allows gas to pass.
内外を連通させる貫通孔が穿設されており、この貫通孔
の少なくとも外端側が、溶融樹脂は侵入させないがガス
の通過は許容する大きさのノズル口通路となっているこ
とを特徴とする中空成形用ガスノズル。2. A plug body inserted into the distal end of the sheath tube is provided with a through hole for communicating the inside and outside of the sheath tube, and at least the outer end side of the through hole does not allow the molten resin to enter, but gas. The gas nozzle for hollow forming is characterized in that the passage has a nozzle opening passage of an allowable size.
とを特徴とする請求項１又は２の中空成形用ガスノズル3. The hollow molding gas nozzle according to claim 1, wherein a concave portion is formed on the tip surface of the plug body.
り、しかも栓体のねじ部軸方向に形成された溝部によっ
て、鞘管内外を連通させる隙間の少なくとも一部が形成
されていることを特徴とする請求項１の中空成形用ガス
ノズル。4. A plug body is screwed into a distal end portion of a sheath tube, and at least a part of a gap for communicating the inside and the outside of the sheath tube is formed by a groove portion formed in an axial direction of a screw portion of the plug body. The gas nozzle for hollow molding according to claim 1, wherein
ことを特徴とする請求項２の中空成形用ガスノズル。5. The gas nozzle for blow molding according to claim 2, wherein the plug is screwed into the tip of the sheath tube.
部の外端側に設けられ、軸部より大径の頭部とからなる
ことを特徴とする請求項１又は２の中空成形用ガスノズ
ル。6. The plug body comprises a shaft portion inserted into the sheath tube and a head portion provided on the outer end side of the shaft portion and having a diameter larger than that of the shaft portion. 2. Hollow molding gas nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11932393A JP3442816B2 (en) | 1993-04-23 | 1993-04-23 | Gas nozzle for hollow molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11932393A JP3442816B2 (en) | 1993-04-23 | 1993-04-23 | Gas nozzle for hollow molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06304956A true JPH06304956A (en) | 1994-11-01 |
| JP3442816B2 JP3442816B2 (en) | 2003-09-02 |
Family
ID=14758623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11932393A Expired - Lifetime JP3442816B2 (en) | 1993-04-23 | 1993-04-23 | Gas nozzle for hollow molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3442816B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0763414A1 (en) * | 1995-09-14 | 1997-03-19 | United Technologies Automotive Systems, Inc. | Gas injection nozzle for use in gas-assisted plastics injection |
| JP2003048235A (en) * | 2001-08-08 | 2003-02-18 | Mitsubishi Engineering Plastics Corp | Pressurized fluid introducing device, mold assembly and injection molding method |
| US7179072B2 (en) | 2003-05-13 | 2007-02-20 | Gordon Frederick Smith | Gas venting needle |
| KR101666404B1 (en) * | 2015-05-20 | 2016-10-19 | 문광필 | Gas exhausting adapter nozzle for injection molding machine |
| KR20170000477U (en) * | 2015-07-27 | 2017-02-06 | 에스엘 주식회사 | Apparatus for molding |
-
1993
- 1993-04-23 JP JP11932393A patent/JP3442816B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0763414A1 (en) * | 1995-09-14 | 1997-03-19 | United Technologies Automotive Systems, Inc. | Gas injection nozzle for use in gas-assisted plastics injection |
| JP2003048235A (en) * | 2001-08-08 | 2003-02-18 | Mitsubishi Engineering Plastics Corp | Pressurized fluid introducing device, mold assembly and injection molding method |
| JP4566477B2 (en) * | 2001-08-08 | 2010-10-20 | 三菱エンジニアリングプラスチックス株式会社 | Injection molding method |
| US7179072B2 (en) | 2003-05-13 | 2007-02-20 | Gordon Frederick Smith | Gas venting needle |
| KR101666404B1 (en) * | 2015-05-20 | 2016-10-19 | 문광필 | Gas exhausting adapter nozzle for injection molding machine |
| KR20170000477U (en) * | 2015-07-27 | 2017-02-06 | 에스엘 주식회사 | Apparatus for molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3442816B2 (en) | 2003-09-02 |
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