JPH0767715B2 - Hot runner type synthetic resin mold - Google Patents
Hot runner type synthetic resin moldInfo
- Publication number
- JPH0767715B2 JPH0767715B2 JP2316715A JP31671590A JPH0767715B2 JP H0767715 B2 JPH0767715 B2 JP H0767715B2 JP 2316715 A JP2316715 A JP 2316715A JP 31671590 A JP31671590 A JP 31671590A JP H0767715 B2 JPH0767715 B2 JP H0767715B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- valve seat
- synthetic resin
- gate opening
- seat piece
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims description 16
- 239000000057 synthetic resin Substances 0.000 title claims description 16
- 229920005989 resin Polymers 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 238000001746 injection moulding Methods 0.000 description 6
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002344 surface layer Substances 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
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- 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、ヒータポットを用いたホットランナ式合成樹
脂金型に関する。The present invention relates to a hot runner type synthetic resin mold using a heater pot.
合成樹脂用の射出成形機は、第２図と第３図の如く固定
盤Ａに上金型１を取付ける一方、可動盤Ｂに下金型11を
取付け、上下金型1,11の間にキャビティ10を形成し、上
金型１に樹脂充填ノズルと連続するスプールＳを設け、
該スプールＳとキャビティ10の間にランナＲ、及びゲー
トＧを設け、ノズルよりスプールＳ、ランナＲ、ゲート
Ｇを介してキャビティ10に溶融樹脂を充填するのが一般
的であった。（例えば特開昭49−29350号公報、実開昭5
0−26163号公報） 近年、肉厚が非常に薄くゲート位置に制限のある合成樹
脂製品の成形として、上金型に分岐路を設け、分岐路の
先に溶融樹脂の加熱供給用ヒータポットを備え、該ヒー
タポットのノズルよりキャビティに直接溶融樹脂を充填
し、溶融樹脂の充填後、ヒータポットに挿通するバルブ
ピンを降下してノズルを塞ぎ、スプールとランナを省略
するホットランナ型式（バルブゲート型式とも称する）
も使用されるに至っている。In the injection molding machine for synthetic resin, as shown in FIGS. 2 and 3, the upper mold 1 is mounted on the fixed plate A, while the lower mold 11 is mounted on the movable plate B, and the upper mold 1 and the lower mold 11 are connected to each other. The cavity 10 is formed, the upper mold 1 is provided with the spool S continuous with the resin filling nozzle,
In general, a runner R and a gate G are provided between the spool S and the cavity 10, and the cavity 10 is filled with the molten resin from the nozzle through the spool S, the runner R, and the gate G. (For example, Japanese Patent Laid-Open No. 49-29350 and Japanese Utility Model Publication No. 5
In recent years, as a synthetic resin product having a very thin wall thickness and a limited gate position, a branch path is provided in the upper mold, and a heater pot for heating and supplying molten resin is provided at the tip of the branch path. A hot runner type (valve gate type) in which the cavity is filled with molten resin directly from the nozzle of the heater pot, and after filling the molten resin, the valve pin inserted into the heater pot is lowered to close the nozzle and the spool and runner are omitted Also called)
Has also been used.
従来技術で述べた射出成形金型の内、前者成形金型にあ
っては、ノズルよりキャビティに充填される溶融樹脂
が、スプールとランナ及びゲートを通って充填されるた
め、充填に時間を要する問題点があると共に、一回の射
出成形毎に、スプールとランナ及びゲートも形成される
問題点があった。In the former molding die among the injection molding dies described in the prior art, the molten resin filled in the cavity from the nozzle is filled through the spool, the runner and the gate, so that the filling takes time. There is a problem that a spool, a runner, and a gate are also formed for each injection molding.
又後者金型にあっては、ヒータポットのノズルよりキャ
ビティに直接溶融樹脂を充填するものであるから、前者
金型より溶融樹脂を短時間に充填し得るが、キャビティ
の大きさに合せてノズルを形成しなければならないの
で、ノズルの加工に高度の熟練を要する問題点があると
共に、ノズルは溶融樹脂の通過や充填後に塞がれるバル
ブピンによって損傷しやすく、その損傷により製品不良
が発生しやすくなる問題点があった。In the latter mold, since the molten resin is directly filled into the cavity from the heater pot nozzle, the molten resin can be filled in a short time from the former mold. Since it is necessary to form a nozzle, there is a problem that it requires a high degree of skill in processing the nozzle, and the nozzle is easily damaged by the valve pin that is blocked after passing or filling the molten resin, and this damage easily causes product defects. There was a problem.
本発明は、従来技術の有するこのような問題点に鑑みて
なされたものであり、その目的とする所は、キャビティ
に連続するノズルを着脱可能な弁座駒に分離形成し、弁
座駒をキャビティの大きさに合せて、或は損傷等した際
に簡単に交換し得るようにしたホットランナ式合成樹脂
金型を提供することにある。The present invention has been made in view of such problems of the prior art, and an object thereof is to separately form a nozzle continuous with a cavity into a removable valve seat piece, It is an object of the present invention to provide a hot runner type synthetic resin mold which can be easily replaced according to the size of the cavity or when it is damaged.
上記目的を達成するために、本発明のホットランナ式合
成樹脂金型は、上金型を構成する第１プレートにキャビ
ティを形成すると共に、少なくとも大径口部と小径口
部、及び船底部から成る大きめの段状ゲート口を設け、
該ゲート口に弁座駒を交換可能に装着固定し、弁座駒に
穿設するノズルをヒータポットに挿通するバルブピンの
往復動により開閉するものである。In order to achieve the above object, the hot runner type synthetic resin mold of the present invention forms a cavity in the first plate forming the upper mold, and at least from the large diameter mouth portion and the small diameter mouth portion and the ship bottom portion. With a large stepped gate opening,
A valve seat piece is exchangeably attached and fixed to the gate port, and a nozzle formed in the valve seat piece is opened and closed by reciprocating movement of a valve pin that is inserted into a heater pot.
ゲート口に嵌挿した弁座駒を、ゲート口の大径口部に嵌
挿する駒押板にて離脱不能に装着固定することも可能で
ある。It is also possible to attach and fix the valve seat piece fitted into the gate opening in a non-separable manner by a piece pushing plate fitted into the large-diameter opening portion of the gate opening.
ゲート口を大きめに、且つ段状に形成し、該ゲート口に
弁座駒を交換可能に装着固定し、弁座駒にキャビティと
ヒータポットの樹脂路に連続するノズルを穿設するもの
であるから、例えノズルが損傷しても、弁座駒のみを着
脱して交換できる。しかも段状ゲート口の下部が船底部
を成し、該船底部に弁座駒の船底胴部を嵌挿するもので
あるから、弁座駒を正確に、しかも安定した状態に装着
し得る。A gate opening is formed in a large size and in a step shape, a valve seat piece is exchangeably attached and fixed to the gate opening, and a nozzle continuous with a cavity and a resin path of a heater pot is bored in the valve seat piece. Therefore, even if the nozzle is damaged, only the valve seat piece can be removed and replaced. Moreover, since the lower part of the stepped gate mouth forms the bottom of the ship and the bottom of the valve seat piece is inserted into the bottom of the ship, the valve seat piece can be mounted accurately and stably.
更に、ゲート口に嵌挿した弁座駒を、駒押板にて固定す
ることより、弁座駒を一段と強力に装着し得る。Further, by fixing the valve seat piece fitted and inserted in the gate opening with the piece push plate, the valve seat piece can be more strongly mounted.
以下、本発明によるホットランナ式合成樹脂金型の基本
構造を第１図と第２図に基づき説明すると、１は射出成
形機の固定盤Ａに取付ける上金型、11は可動盤Ｂに取付
ける下金型で、上下金型1,11の接合部にキャビティ10を
形成するか、上金型１を構成する第１プレート21と、下
金型11を構成する第１プレート31の間にキャビティ10を
形成し、上金型１にスプールＳと、スプールＳに連通す
る分岐路９を形成すると共に、各分岐路９の先に溶融樹
脂の加熱供給用ヒータポット２を取付けている。The basic structure of the hot runner type synthetic resin mold according to the present invention will be described below with reference to FIGS. 1 and 2. 1 is an upper mold attached to a fixed plate A of an injection molding machine, and 11 is a movable plate B. In the lower mold, a cavity 10 is formed at the joint between the upper and lower molds 1 and 11, or a cavity is formed between the first plate 21 that constitutes the upper mold 1 and the first plate 31 that constitutes the lower mold 11. 10 is formed, the spool S and the branch passage 9 communicating with the spool S are formed in the upper mold 1, and the heater pot 2 for heating and supplying the molten resin is attached to the tip of each branch passage 9.
ヒータポット２は第４図の如く、本体３の中心部に樹脂
路４を貫通し、本体３の後部に蓋体13を取付け、蓋体13
の中心より樹脂路４にバルブピン５を往復動可能に挿通
するもので、本体３は筒胴部3aの下部に先細となる先部
3bを形成し、蓋体13に樹脂路４と分岐路９に連通する分
岐管9aを設け、バルブピン５は先端部に先細の弁部5aを
形成し、蓋体13より外部に突出するバルブピン５の後部
にピストン15を取付けている。As shown in FIG. 4, the heater pot 2 penetrates the resin passage 4 in the central portion of the main body 3, attaches the lid body 13 to the rear portion of the main body 3, and
The valve pin 5 is reciprocally inserted into the resin passage 4 from the center of the main body 3, and the main body 3 is tapered at the lower part of the barrel 3a.
3b is formed, a branch pipe 9a communicating with the resin passage 4 and the branch passage 9 is provided in the lid body 13, the valve pin 5 has a tapered valve portion 5a at the tip, and the valve pin 5 protruding outward from the lid body 13 is formed. A piston 15 is attached to the rear part.
このピストン15は上金型１に設けたシリンダー12に挿通
し、空気制御により往復動可能となる。The piston 15 is inserted into a cylinder 12 provided in the upper mold 1 and can be reciprocated by air control.
キャビティ10を形成する上金型１の第１プレート21に、
キャビティ10に連続する大きめの段状ゲート口８を設
け、該ゲート口８に弁座駒６を交換可能に固定し、弁座
駒６にヒータポット２の樹脂路４に連続するノズル７を
設け、ノズル７をバルブピン５の往復動により開閉する
ものである。On the first plate 21 of the upper mold 1 forming the cavity 10,
A large stepped gate opening 8 continuous to the cavity 10 is provided, the valve seat piece 6 is exchangeably fixed to the gate opening 8, and the valve seat piece 6 is provided with a nozzle 7 continuous to the resin passage 4 of the heater pot 2. The nozzle 7 is opened and closed by the reciprocating movement of the valve pin 5.
第１プレート21に形成する段状ゲート口８は、少なくと
もキャビティ10に向けて順次小径となるよう、少なくと
も大径口部8aと小径口部8b、及び船底部8dから形成する
ものである。The stepped gate opening 8 formed in the first plate 21 is formed of at least a large diameter opening 8a, a small diameter opening 8b, and a ship bottom 8d so that the diameter gradually decreases toward at least the cavity 10.
段状ゲート口８に装着する弁座駒６は、ゲート口８の船
底部8dに嵌挿する船底胴部6aと、該胴部6aの上部より突
出する鍔6b、及び内部に穿設するノズル７から形成さ
れ、ノズル７がヒータポット２の樹脂路４よりキャビテ
ィ10に向けて先細となる。The valve seat piece 6 attached to the stepped gate opening 8 includes a ship bottom body 6a fitted into the ship bottom 8d of the gate opening 8, a collar 6b protruding from an upper portion of the body 6a, and a nozzle bored therein. 7, the nozzle 7 is tapered from the resin passage 4 of the heater pot 2 toward the cavity 10.
このノズル７は、キャビティ10の大小や合成樹脂の種
類、或は樹脂の充填圧力等に応じて形成し、且つバルブ
ピン弁部5aの傾斜角θと一致するように形成し、バルブ
ピン５を降下した際、ピン弁部5aがノズル７に密接して
閉鎖されることが望ましいが、ピン弁部5aの先端がノズ
ル７よりキャビティ10に多少出入りしてもよい。また弁
座駒６の先端をキャビティ10内に少し突出するように装
着し、船底胴部6aが製品の表層部に食込み、ノズル７に
て形成される製品の臍が、製品の外面より露出しないよ
うにすることが望ましい。The nozzle 7 is formed according to the size of the cavity 10, the type of synthetic resin, the filling pressure of the resin, and the like, and is formed so as to match the inclination angle θ of the valve pin valve portion 5a, and the valve pin 5 is lowered. At this time, it is desirable that the pin valve portion 5a be closed in close contact with the nozzle 7, but the tip of the pin valve portion 5a may move in and out of the cavity 10 from the nozzle 7 to some extent. Further, the tip of the valve seat piece 6 is mounted so as to slightly project into the cavity 10, the ship bottom body portion 6a bites into the surface layer of the product, and the navel of the product formed by the nozzle 7 is not exposed from the outer surface of the product. It is desirable to do so.
第６図の合成樹脂金型は、段状ゲート口８を大径口部8a
と中径口部8c、小径口部8b、及び船底部8dから形成し、
弁座駒６に穿設するノズル７の上部に、樹脂路４と同径
の案内路6cを設け、ゲート口８の小径口部8bより船底部
8dに弁座駒６の船底胴部6aを、ゲート口８の中径口8cに
弁座駒６の鍔6bを嵌挿し、大径口部8aに駒押板16を嵌合
し、該駒押板16より第１プレート21に螺入するボルトＮ
にて弁座駒６を離脱不能に取付けるものである。In the synthetic resin mold shown in FIG. 6, the stepped gate opening 8 has a large diameter opening 8a.
And a medium diameter mouth portion 8c, a small diameter mouth portion 8b, and a ship bottom portion 8d,
A guide path 6c having the same diameter as that of the resin path 4 is provided above the nozzle 7 formed in the valve seat piece 6, and the small-diameter opening 8b of the gate opening 8 extends to the bottom of the ship.
8d is fitted with the bottom portion 6a of the valve seat piece 6, the flange 6b of the valve seat piece 6 is inserted into the medium diameter opening 8c of the gate opening 8, and the piece pushing plate 16 is fitted into the large diameter opening 8a. Bolt N screwed into the first plate 21 from the push plate 16
The valve seat piece 6 is attached irremovably.
第８図と第９図の合成樹脂金型は、樹脂路４に連続する
絞り部4aを別体に形成し、該絞り部4aをヒータポット本
体３の先部3bに取付けたものである。In the synthetic resin mold shown in FIGS. 8 and 9, the throttle portion 4a continuous with the resin passage 4 is formed as a separate body, and the throttle portion 4a is attached to the tip portion 3b of the heater pot body 3.
本発明は、以上説明したように構成されているので、以
下に記載されるような効果を奏する。Since the present invention is configured as described above, it has the effects described below.
キャビティに接続するゲート口を大きめに、且つ段状に
設け、該ゲート口にノズルを穿設した弁座駒を交換可能
に固定し、ノズルをヒータポットに挿通するバルブピン
の往復動により開閉するものであるから、例えノズルが
溶融樹脂に混入した異物やバルブピンによって損傷して
も、上金型を分解し、弁座駒のみを修理したり交換すれ
ばよい。即ちノズルが損傷しても上金型を交換する必要
がなく、弁座駒のみを交換すればよいので、修理交換が
著しく簡単容易であると共に、修理交換費用も著しく安
価になる。A gate opening connected to the cavity is provided in a large and stepped manner, a valve seat piece having a nozzle formed in the gate opening is exchangeably fixed, and the nozzle is opened and closed by reciprocal movement of a valve pin inserted into the heater pot. Therefore, even if the nozzle is damaged by foreign matter mixed in the molten resin or the valve pin, it is only necessary to disassemble the upper mold and repair or replace only the valve seat piece. That is, even if the nozzle is damaged, it is not necessary to replace the upper mold, and only the valve seat piece needs to be replaced. Therefore, repair and replacement are extremely simple and easy, and repair and replacement costs are significantly low.
又ゲート口に弁座駒を装着固定し、弁座駒よりキャビテ
ィに溶融樹脂を充填するものであるから、弁座駒を耐熱
金属や放熱しやすい金属等にて形成したり、ノズルを高
精度に加工することもできるばかりか、弁座駒を選択し
て嵌装することができるので、弁座駒の交換によって溶
融樹脂量も加減することもできる。Also, since the valve seat piece is mounted and fixed to the gate port and the cavity is filled with molten resin, the valve seat piece is made of heat-resistant metal or metal that easily dissipates heat, and the nozzle is highly accurate. Not only can it be machined, but since the valve seat piece can be selected and fitted, the amount of molten resin can be adjusted by replacing the valve seat piece.
特にゲート口の下部が船底部を成し、その船底部に弁座
駒の船底胴部を嵌挿するものであるから、弁座駒を正確
に、しかも安定した状態に装着し得るし、更に弁座駒を
駒押板にて固定することにより、弁座駒を一段と強力に
装着し得る。In particular, since the lower part of the gate opening forms the bottom of the ship, and the bottom of the valve seat piece is inserted into the bottom of the ship, the valve seat piece can be mounted accurately and in a stable state. By fixing the seat piece with the piece push plate, the valve seat piece can be mounted more strongly.
尚、本発明の樹脂金型は吹込成形にも応用し得る。The resin mold of the present invention can also be applied to blow molding.
第１図は本発明によるホットランナ式合成樹脂金型の一
部切欠側面図、第２図は従来射出成形金型の使用例を示
す一部切欠側面図、第３図は従来射出成形金型の断面
図、第４図と第５図はヒータポットの使用例を示す要部
断面図、第６図は弁座駒の取付け例を示す上金型の要部
断面図、第７図はその分解縦断面図、第８図と第９図は
類例弁座駒の使用例を示す要部断面図である。 １……上金型、11……下金型、21,31……第１プレー
ト、 ２……ヒータポット、３……本体、3a……筒胴部、3b…
…先部、４……樹脂路、4a……絞り部、５……バルブピ
ン、5a……弁部、６……弁座駒、6a……船底胴部、6b…
…鍔、6c……案内路、７……ノズル、８……ゲート口、
8a……大径口、8b……小径口、8c……中径口、8d……船
底部、９……分岐路、10……キャビティ、12……シリン
ダー、13……蓋体、15……ピストン、16……駒押板、 Ａ……固定盤、Ｂ……可動盤、Ｇ……ゲート、Ｒ……ラ
ンナ、Ｓ……スプール、 Ｎ……ボルト、 θ……ピン弁部とゲートの傾斜角FIG. 1 is a partially cutaway side view of a hot runner type synthetic resin mold according to the present invention, FIG. 2 is a partially cutaway side view showing a usage example of a conventional injection molding mold, and FIG. 3 is a conventional injection molding mold. FIG. 4, FIG. 4 and FIG. 5 are main-part cross-sectional views showing an example of using a heater pot, FIG. 6 is a main-part cross-sectional view of an upper die showing an example of mounting a valve seat piece, and FIG. FIG. 8 and FIG. 9 are vertical sectional views showing essential parts of an example of using the similar type valve seat piece. 1 ... Upper mold, 11 ... Lower mold, 21,31 ... First plate, 2 ... Heater pot, 3 ... Main body, 3a ... Cylinder body, 3b ...
… Tip part, 4… Resin path, 4a… Throttling part, 5… Valve pin, 5a… Valve part, 6… Valve seat piece, 6a… Ship bottom body part, 6b…
… Tsuba, 6c… Guideway, 7… Nozzle, 8… Gate opening,
8a ... large diameter mouth, 8b ... small diameter mouth, 8c ... medium diameter mouth, 8d ... ship bottom, 9 ... branch, 10 ... cavity, 12 ... cylinder, 13 ... lid, 15 ... ... Piston, 16 ... piece push plate, A ... fixed plate, B ... movable plate, G ... gate, R ... runner, S ... spool, N ... bolt, θ ... pin valve part and gate Tilt angle
Claims (4)
に溶融樹脂を直接充填する合成樹脂金型において、上金
型（１）のキャビティ（10）に設けるゲート口（８）を
大きめに、且つキャビティ（10）に向けて順次段状に小
径となるよう、少なくとも大径口部（8a）と小径口部
（8b）、及び船底部（8d）から形成し、該ゲート口
（８）に弁座駒（６）を交換可能に嵌挿し、弁座駒
（６）に穿設するノズル（７）をヒータポット（２）に
挿通するバルブピン（５）の往復動により開閉するホッ
トランナ式合成樹脂金型。1. A cavity (10) from a heater pot (2).
In a synthetic resin mold in which molten resin is directly filled in, the gate opening (8) provided in the cavity (10) of the upper mold (1) is made larger, and the diameter is gradually reduced stepwise toward the cavity (10). A small seat (8a), a small mouth (8b), and a ship bottom (8d), and a valve seat piece (6) is replaceably inserted into the gate opening (8). A hot runner type synthetic resin mold in which a nozzle (7) formed in a piece (6) is opened and closed by reciprocating movement of a valve pin (5) which is inserted into a heater pot (2).
1）にキャビティ（10）と段状ゲート口（８）を形成
し、ゲート口（８）に装着する弁座駒（６）を、ゲート
口（８）の船底部（8d）に嵌挿する船底胴部（6a）と、
該胴部（6a）の上部より外側に突出する鍔（6b）、及び
内部に穿設するノズル（７）より形成した請求項１記載
のホットランナ式合成樹脂金型。2. A first plate (2) constituting an upper mold (1).
A cavity (10) and a stepped gate opening (8) are formed in 1), and a valve seat piece (6) attached to the gate opening (8) is fitted into the bottom (8d) of the gate opening (8). The bottom of the ship (6a),
The hot runner type synthetic resin mold according to claim 1, which is formed by a collar (6b) protruding outward from an upper portion of the body (6a) and a nozzle (7) bored inside.
（６）を、ゲート口（８）の大径口部（8a）に嵌挿する
駒押板（16）にて離脱不能に装着固定する請求項１又は
２記載のホットランナ式合成樹脂金型。3. A valve seat piece (6) fitted into the stepped gate opening (8) is separated by a piece pushing plate (16) fitted into the large diameter opening portion (8a) of the gate opening (8). The hot runner type synthetic resin mold according to claim 1 or 2, which is mounted and fixed irreversibly.
（６）の先端を、キャビティ（10）内に少し突出するよ
うにした請求項１、２又は３に記載のホットランナ式合
成樹脂金型。4. The hot runner type according to claim 1, 2 or 3, wherein the tip of the valve seat piece (6) mounted on the stepped gate port (8) is slightly projected into the cavity (10). Synthetic resin mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2316715A JPH0767715B2 (en) | 1990-11-20 | 1990-11-20 | Hot runner type synthetic resin mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2316715A JPH0767715B2 (en) | 1990-11-20 | 1990-11-20 | Hot runner type synthetic resin mold |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17585288A Division JPH0224110A (en) | 1988-07-13 | 1988-07-13 | Mold for synthetic resin and valve seat piece to be incorporated into the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03162921A JPH03162921A (en) | 1991-07-12 |
| JPH0767715B2 true JPH0767715B2 (en) | 1995-07-26 |
Family
ID=18080096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2316715A Expired - Lifetime JPH0767715B2 (en) | 1990-11-20 | 1990-11-20 | Hot runner type synthetic resin mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0767715B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0664004A (en) * | 1992-08-24 | 1994-03-08 | Seikichi Nakajima | Hot runner and hot tip for hot runner |
| JPH0664829U (en) * | 1993-02-18 | 1994-09-13 | 株式会社ユーシン精機 | Hot nozzle for runnerless injection molding |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946223U (en) * | 1982-09-18 | 1984-03-27 | アルプス電気株式会社 | Direct hot runner |
| DE3403603C2 (en) * | 1984-02-02 | 1985-12-05 | Maschinenfabrik Köppern GmbH & Co KG, 4320 Hattingen | Force-controlled valve gate for injection nozzles in injection molds |
| DE3632185A1 (en) * | 1986-09-23 | 1988-03-31 | Battenfeld Maschfab | DEVICE FOR PRODUCING PLASTIC MOLDED BODIES |
| JPS6395923A (en) * | 1986-10-13 | 1988-04-26 | Sony Corp | Hot runner type injection molding device |
| JPS6392715U (en) * | 1986-12-05 | 1988-06-15 | ||
| CA1261579A (en) * | 1987-03-19 | 1989-09-26 | Mold-Masters Limited | Replaceable rocker arm assembly for injection molding system |
| JPH0224110A (en) * | 1988-07-13 | 1990-01-26 | Sansho Giken Kk | Mold for synthetic resin and valve seat piece to be incorporated into the same |
-
1990
- 1990-11-20 JP JP2316715A patent/JPH0767715B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03162921A (en) | 1991-07-12 |
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