JPS5846387B2 - Gas venting device for mold - Google Patents

Gas venting device for mold

Info

Publication number
JPS5846387B2
JPS5846387B2 JP55027891A JP2789180A JPS5846387B2 JP S5846387 B2 JPS5846387 B2 JP S5846387B2 JP 55027891 A JP55027891 A JP 55027891A JP 2789180 A JP2789180 A JP 2789180A JP S5846387 B2 JPS5846387 B2 JP S5846387B2
Authority
JP
Japan
Prior art keywords
valve
gas
mold
cavity
injection
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
Application number
JP55027891A
Other languages
Japanese (ja)
Other versions
JPS5647260A (en
Inventor
孝彦 竹嶋
光次 松井
正 植木
恒夫 上野
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP55027891A priority Critical patent/JPS5846387B2/en
Priority to US06/188,257 priority patent/US4431047A/en
Priority to CA000360858A priority patent/CA1151377A/en
Priority to DE3036233A priority patent/DE3036233C2/en
Priority to IT24900/80A priority patent/IT1133630B/en
Priority to SU802986747A priority patent/SU1082311A3/en
Priority to CH7219/80A priority patent/CH654768A5/en
Priority to FR8020721A priority patent/FR2466292A1/en
Priority to BR8006217A priority patent/BR8006217A/en
Priority to ES495400A priority patent/ES8201052A1/en
Publication of JPS5647260A publication Critical patent/JPS5647260A/en
Publication of JPS5846387B2 publication Critical patent/JPS5846387B2/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14Machines with evacuated die cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/10Moulds or cores; Details thereof or accessories therefor with incorporated venting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Description

【発明の詳細な説明】 この発明は、ダイカストマシンや射出成形機等の成形機
にお(゛て、成形時の金型のキャビティから大量のガス
を抜き取るための金型用ガス抜き装置に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold gas venting device for extracting a large amount of gas from a mold cavity during molding in a molding machine such as a die casting machine or an injection molding machine. It is.

従来より、ダイカストは精密な製品を多量に製造する成
形法として広く普及して(゛るが、製品内部に巣のな〜
゛健全性を重要視される品物には適さな℃゛場合た。
Traditionally, die casting has been widely used as a molding method for manufacturing precision products in large quantities.
The temperature was not suitable for products for which integrity is important.

それは、高速、高圧で溶融金属をキャビティ内に充填す
るため、キャビティ内のガスが充分抜は切らずに、溶融
金属と混合して、製品中に残存することがあるためであ
る。
This is because the cavity is filled with molten metal at high speed and high pressure, so the gas in the cavity may not be sufficiently vented and may mix with the molten metal and remain in the product.

その対策として、従来より、キャビティ内を活性ガスで
置換して、溶融金属と化合させ、固定化する無孔性ダイ
カスト法や、減圧する方法などが考えられてち・るが、
これらは金型や装置が複雑となり、一般的ではなかった
As a countermeasure, conventional methods have been considered, such as a non-porous die casting method in which the inside of the cavity is replaced with an active gas, which is combined with the molten metal and fixed, and a method of reducing pressure.
These require complicated molds and equipment, and are not common.

この発明の発明者は、ダイカストモデルでエヤベントの
面積と鋳込製品の比重値との関係を調べたところ、エヤ
ベントの面積が増すに従って、鋳込製品の比重値も上る
ことを見〜・出した。
The inventor of this invention investigated the relationship between the area of the air vent and the specific gravity value of the cast product using a die-cast model, and found that as the area of the air vent increases, the specific gravity value of the cast product also increases. .

しかしながら、エヤベントの数は製品の大きさで制限さ
れるし、また、エヤベントの厚みは、溶融金属を通過さ
せな(・ために約0.1 rrrm以上にはどれなL・
However, the number of air vents is limited by the size of the product, and the thickness of the air vent must be approximately 0.1 rrrm or more to prevent molten metal from passing through.
.

この発明は、そのような製品や金型構造に制約されずに
、大量のガスを抜き、ガスの巻込みを、なくして、健全
なダイカスト製品を得ることができるようにしたもので
ある。
This invention makes it possible to extract a large amount of gas, eliminate gas entrainment, and obtain sound die-cast products without being restricted by such products or mold structures.

すなわち、この発明は、金型のキャビティから金型外に
通じるガス排出路を、弁の作用で開(・ておち・た状態
で射出を行(・、キャビティ内の質量の小さく・ガスを
ガス排出路を通してほぼ排出し終った時点で、キャビテ
ィ内から進んで来た質量の犬き℃・被射出溶融物の慣性
力を前記弁に直接作用させることにより、前記弁を確実
にかつすばやく移動させて、前記弁で前記ガス排出路を
直接遮断し、このガス排出路からの被射出溶融物の流出
を防せぎうるようにして、射出時に金型内のガス抜きを
確実容易に行L・うるようにしたものである。
That is, in this invention, the gas discharge path leading from the mold cavity to the outside of the mold is opened (・down・・injection) by the action of a valve. When the discharge through the discharge path is almost completed, the inertial force of the mass of the injected melt that has advanced from inside the cavity is applied directly to the valve, thereby moving the valve reliably and quickly. The gas exhaust path is directly shut off by the valve to prevent the molten material to be injected from flowing out from the gas exhaust path, so that gas inside the mold can be reliably and easily vented during injection. This is how it was done.

つぎに、図面に示した実施例によって、この発明を説明
する。
Next, the present invention will be explained with reference to embodiments shown in the drawings.

第1,2図に示した実施例におち・て、1は固定盤、2
は可動盤、3は固定金型、4は可動金型、5は押出板、
6は押出ピン、Tは金型3,4のキャビティ、8は被射
出溶融物である溶融金属の鋳込穴である。
In the embodiment shown in Figures 1 and 2, 1 is a fixed plate, 2
is a movable plate, 3 is a fixed mold, 4 is a movable mold, 5 is an extrusion plate,
6 is an extrusion pin, T is a cavity of the molds 3 and 4, and 8 is a casting hole for molten metal which is the molten material to be injected.

可動金型4におL・て、キャビティ7の回りの固定金型
3に面する部分には、充分な面積を有する薄L・ガス抜
き道9を設け、ガス抜き道9の上端部に連結して上方に
伸びたガス抜き溝10を、2個の金型3,40分割面ま
たは可動金型40分割面に設けた。
In the movable mold 4, a thin L gas venting path 9 having a sufficient area is provided in the part facing the fixed mold 3 around the cavity 7, and connected to the upper end of the gas venting path 9. A gas vent groove 10 extending upward was provided on the 3-40 dividing surface of the two molds or on the 40-dividing surface of the movable mold.

そして、金型3,4のキャビティ7から導かれたガス抜
き溝10に、キャビティ7から進んで来る溶融金属の作
用によって、溶融金属の作用方向に直接動かされる弁1
4を設げた。
A valve 1 is inserted into the gas vent groove 10 led from the cavities 7 of the molds 3 and 4 and is moved directly in the direction of action of the molten metal by the action of the molten metal advancing from the cavity 7.
4 was established.

弁14としては、弁14の移動方向と同一方向からの溶
融金属の作用によって直接動かされることにより、後記
するバイパス15などからなる第1のガス排出路を同一
の弁14で直接遮断するようにしたものを1個だけ設け
た。
The valve 14 is moved directly by the action of molten metal from the same direction as the moving direction of the valve 14, so that the same valve 14 directly blocks off a first gas discharge path consisting of a bypass 15, etc., which will be described later. Only one item was provided.

すなわち、ガス抜き溝10に続L・て、2個の金型3,
40両分割面部に、半割にできる弁室11.弁座12、
ガス排出穴13を上方に向って直列に配置し、弁室11
中には、上下方向に向って摺動可能な弁14を内蔵した
That is, two molds 3,
Valve chamber 11 that can be split in half on the 40-way split surface. Valve seat 12,
The gas discharge holes 13 are arranged in series facing upward, and the valve chamber 11
A valve 14 that can be slid in the vertical direction is built inside.

弁14は円板状にし、上端外周面はテーパ面とした。The valve 14 was shaped like a disk, and the outer peripheral surface of the upper end was tapered.

すなわち、弁14としては、弁頭部を有するディスクタ
イプまたはシートタイプと呼ぶ形状の弁を用(・た。
That is, as the valve 14, a valve having a shape called a disk type or seat type having a valve head is used.

そして、この弁14を摺動自在に支持して、それ自体が
軸線方向に摺動するスプール22を設け、スプール22
の弁側の端部に、前記弁14の弁頭部の裏面外周に設け
たテーパ面が押付けられて着座するテーパ状の弁座12
を設けた。
A spool 22 that slidably supports this valve 14 and itself slides in the axial direction is provided, and the spool 22
A tapered valve seat 12 is seated with a tapered surface provided on the outer periphery of the back surface of the valve head of the valve 14 pressed against the valve-side end of the valve seat 12.
has been established.

また、スプール22の内部のガス排出穴13を固定金型
3の外に連通させた第2のガス排出路であるガス排出口
20を設けた。
Further, a gas exhaust port 20 is provided as a second gas exhaust path that communicates the gas exhaust hole 13 inside the spool 22 with the outside of the fixed mold 3.

この装置の詳細は第4図に示した。Details of this device are shown in FIG.

18は固定金型3に取付けたシリンダ、18aはピスト
ン、19はピストンロッドであり、ピストンロッド19
の下端部にはスプール22を固定し、スプール22は固
定金型3に設けた垂直な半割穴23と、この半割穴に合
致した可動金型4に設けた垂直な半割穴の中で摺動可能
に設げた。
18 is a cylinder attached to the fixed mold 3, 18a is a piston, and 19 is a piston rod.
A spool 22 is fixed to the lower end of the spool 22, and the spool 22 is inserted into a vertical half hole 23 formed in the fixed mold 3 and a vertical half hole formed in the movable mold 4 that matches this half hole. It was designed to be able to slide.

スプール22の上部には室24を設け、スプール22の
下部には下方に開L・たガス排出穴13と弁座12を設
けた。
A chamber 24 is provided in the upper part of the spool 22, and a downwardly opened gas discharge hole 13 and a valve seat 12 are provided in the lower part of the spool 22.

弁14の上端中央部には垂直なロッド25を設け、室2
4内まで貫通したロッド25の先端部にはナツト26を
取付げた。
A vertical rod 25 is provided at the center of the upper end of the valve 14 to open the chamber 2.
A nut 26 was attached to the tip of the rod 25 that penetrated into the inside of the rod 4.

勿論、ロッド25はスプール22に対して摺動自在に設
けた。
Of course, the rod 25 is provided slidably relative to the spool 22.

そして、ロッド25の回りで、弁14の上端面とスプー
ル22のガス排出穴13の底面との間には、圧縮ばね1
7を設けた。
A compression spring 1 is connected around the rod 25 between the upper end surface of the valve 14 and the bottom surface of the gas discharge hole 13 of the spool 22.
7 was established.

弁室11の直前のガス抜き溝10の途中より、弁14の
移動路の側面である弁座12の直前の弁室11の側面と
の間には、弁14部を迂廻した第1のガス排出用の通路
であるバイパス15を設け、弁14の作動により、バイ
パス15と金型外部間のガス排出路の連通、遮断を直接
規制し5るようにした。
Between the middle of the gas vent groove 10 immediately in front of the valve chamber 11 and the side surface of the valve chamber 11 immediately in front of the valve seat 12, which is the side surface of the movement path of the valve 14, there is a first groove around the valve chamber 14. A bypass 15, which is a passage for gas discharge, is provided, and the operation of the valve 14 directly controls communication and interruption of the gas discharge passage between the bypass 15 and the outside of the mold.

ガス抜き溝10とバイパス15の入口部とのなす交差角
θは鋭角か直角にした。
The intersecting angle θ between the gas vent groove 10 and the inlet of the bypass 15 was set to be an acute angle or a right angle.

弁室12に面したガス抜き溝100口部16はノズル状
に狭くした。
The opening 16 of the gas vent groove 100 facing the valve chamber 12 is narrowed into a nozzle shape.

すなわち、この実施例におち・ては、金型3,4の分離
面部に、キャビティ7から導かれたガス抜き溝10、ガ
ス抜き溝10の端部で軸線方向に摺動する弁14、弁1
4を摺動自在に支持してそれ自体が軸線方向に摺動しう
るスプール22、および、ガス抜き溝10の途中から弁
14部の側面に迂廻した第1のガス排出用の通路である
バイパス15を設け、かつ、スプール22の内部を金型
3の外に連通させた第2のガス排出路であるガス排出口
20を設けるとともに、弁14側のスプール22の端部
に弁座12を設けた。
That is, in this embodiment, a gas vent groove 10 led from the cavity 7, a valve 14 that slides in the axial direction at the end of the gas vent groove 10, and a valve are provided on the separation surface of the molds 3 and 4. 1
A spool 22 that supports the gas valve 4 in a freely slidable manner and can itself slide in the axial direction, and a first gas exhaust passage that detours from the middle of the gas vent groove 10 to the side surface of the valve 14 portion. A bypass 15 is provided, and a gas exhaust port 20 is provided as a second gas exhaust path that communicates the inside of the spool 22 with the outside of the mold 3. has been established.

また、スプール22と弁14との間には、圧縮ばね17
を配した。
Additionally, a compression spring 17 is provided between the spool 22 and the valve 14.
was arranged.

圧縮ばね17の位置は第4図に示したように、スプール
22の下半分に位置するガス排出穴13部のスプール2
2と弁14との間のロン1250回りでも良L・し、第
6〜8図に示すように、室24内におけるナツト26に
相当する弁140頭部26aの上面とスプール22の天
井面との間でも良L・。
The position of the compression spring 17 is as shown in FIG.
As shown in FIGS. 6 to 8, the upper surface of the valve 140 head 26a corresponding to the nut 26 in the chamber 24 and the ceiling surface of the spool 22 Good between L.

ただし、圧縮ばね1γは必ずしも設ける必要はなく、弁
14を自然落下させるか、他のシリンダなどで下降させ
た後、下方への押圧力をOにしておくようにしても良(
・。
However, it is not necessary to provide the compression spring 1γ, and the downward pressing force may be set to O after the valve 14 is allowed to fall naturally or is lowered by another cylinder, etc. (
・.

つぎに、この発明の前記実施例の作動順序につL・て説
明する。
Next, the operation sequence of the embodiment of the present invention will be explained.

マス、ピストンロッド19を上昇させて、圧縮ばね17
の力を弱め、かつ、弁14を弁室11の下端部から若干
浮かした状態で型締を行℃・、続いてピストンロッド1
9を下降させて、弁14を弁室11の下端部に確実に密
着させておく。
mass, raise the piston rod 19, and compress the compression spring 17.
The force is weakened and the mold is clamped with the valve 14 slightly floating above the lower end of the valve chamber 11. Then, the piston rod 1 is closed.
9 is lowered to ensure that the valve 14 is in close contact with the lower end of the valve chamber 11.

この状態では、バイパス15は弁室11の上部に通じて
L・る。
In this state, the bypass 15 leads to the upper part of the valve chamber 11.

この状態で、鋳込穴8より溶融金属をキャビティT内に
鋳込めば、キャビティ7内への溶湯充填中に、キャビテ
ィ7内のガスはガス抜き道9、ガス抜き溝10、バイパ
ス15、弁室11の上部、ガス排出穴13を通って、ガ
ス排出口20より排出される。
In this state, if molten metal is poured into the cavity T from the pouring hole 8, the gas in the cavity 7 will flow through the gas vent path 9, the gas vent groove 10, the bypass 15, and the valve. The gas passes through the gas exhaust hole 13 in the upper part of the chamber 11 and is discharged from the gas exhaust port 20 .

この間、第3図aに示すように弁14は弁室11の下部
に押付けられたままの状態を保っており、大量のガスは
矢印で示すように、バイパス15を通って抜ける。
During this time, the valve 14 remains pressed against the lower part of the valve chamber 11, as shown in FIG. 3a, and a large amount of gas escapes through the bypass 15, as shown by the arrow.

勿論、このとき、ガスは口部16を通って弁14の下面
にも作用するが、ガスは質量が極めて小さL・ので、弁
14は上昇することはなL・。
Of course, at this time, the gas also acts on the lower surface of the valve 14 through the opening 16, but since the mass of the gas is extremely small L, the valve 14 does not rise L.

キャビティ7内への溶融金属の充填がほぼ完了すると、
質量の太き(・溶融金属21がガス抜き溝10内を上昇
して来て、弁14の下面に衝突し、その結果、弁14は
圧縮ばね17に抗して押上げられる。
When the filling of the molten metal into the cavity 7 is almost completed,
The large mass of the molten metal 21 rises inside the gas vent groove 10 and collides with the lower surface of the valve 14, and as a result, the valve 14 is pushed up against the compression spring 17.

そして、溶融金属21は弁14を押上げるとともに、一
部がバイパス15へ進入し始める。
Then, the molten metal 21 pushes up the valve 14 and a part of it begins to enter the bypass 15.

この時の状態を第3図すに示す。The state at this time is shown in Figure 3.

やがて、溶融金属21の押上作業によって、弁14は閉
じられ、溶融金属21はせき止められる。
Eventually, the valve 14 is closed by pushing up the molten metal 21, and the molten metal 21 is dammed up.

この時、バイパス15を通って抜けてL・つたガスは、
はとんど抜けてL・て、弁座12近くに若干残っている
だけの状態になるが、これは鋳込製品には何ら悪影響は
及ぼさない。
At this time, the L. ivy gas that has passed through the bypass 15 is
The L. is completely removed and only a small amount remains near the valve seat 12, but this does not have any adverse effect on the cast product.

この時の状態を第3図Cに示す。The state at this time is shown in FIG. 3C.

鋳込作業が終れば、シリンダ18を作動させて、ピスト
ンロッド19を上昇させてスリーブ22と弁14をある
程度持ち上げた後、型開きを行う。
When the casting operation is completed, the cylinder 18 is operated to raise the piston rod 19 to lift the sleeve 22 and valve 14 to some extent, and then the mold is opened.

この時の状態を第3図dに示す。The state at this time is shown in FIG. 3d.

続L・て、押出ピン6の作動により、鋳込製品を取出す
と同時に、ガス抜き溝10、弁室11下部およびバイパ
ス15中の凝固金属21aを取出す。
Continuation L. By operating the extrusion pin 6, the cast product is taken out, and at the same time, the solidified metal 21a in the gas vent groove 10, the lower part of the valve chamber 11, and the bypass 15 is taken out.

この装置を用L・れば、弁14は恒久的に使用すること
ができる。
If this device is used, the valve 14 can be used permanently.

なお、弁14の下面に当った溶融金属が弁14の外方向
に飛ばか・ように、弁14の下面には、第6,7図に示
すように、皿状の凹み14aを設けても良L゛が、その
場合は、スリーブ22と弁14を必ずその凹み14aの
厚さ以上に上昇させた後、型開な行う。
Note that a dish-shaped recess 14a may be provided on the bottom surface of the valve 14, as shown in FIGS. In that case, the sleeve 22 and valve 14 must be raised to a level greater than the thickness of the recess 14a before the mold is opened.

この発明は、ガスと溶融金属との比重差、例えば、空気
と溶融アルミニウムとの比重が約1=2000であると
り・う比重差、および、この比重差に基づく慣性力の差
を利用したものである。
This invention utilizes the difference in specific gravity between gas and molten metal, for example, the difference in specific gravity between air and molten aluminum, which is about 1=2000, and the difference in inertia based on this difference in specific gravity. It is.

そして、金型3,4のキャビティ7から導びかれたガス
抜き溝10部に、ガス抜き溝10の軸線と同一方向に摺
動する1個の弁14を設け、かつ、ガス抜き溝10から
弁14部の側面に逆運したバイパス15を設けた金型4
を用(・、キャビティ7から金型3,4の外へ通じるガ
ス排出路を弁140作用で開℃・た状態で射出を行℃゛
、まず、キャビティ7から進んで来た質量の小さL・ガ
スが弁14のガス抜き溝10側の端面に作用してL・る
ときは、弁14が質量の小さいガスによって押されるこ
となく、ガス抜き溝10側の端部にあり、バイパス15
と弁14部などからなる逆運したガス排出路を通してガ
スを排出し、その途中で、質量の小さL・ガスに続L・
てキャビティ7から進んで来た質量の太き(・被射出溶
融物である溶融金属が、弁14の移動方向と同一方向か
ら弁14のガス抜き構10側の端面に直接作用すること
により、弁14を移動させて、弁14でガス排出路を直
接遮断し、溶融金属が弁14から外部へ排出されな(・
ようにして、金型3,4内のガス抜きを行℃・ながら射
出しうるようにしたものである。
Then, one valve 14 that slides in the same direction as the axis of the gas vent groove 10 is provided in the gas vent groove 10 portion led from the cavity 7 of the molds 3 and 4. Mold 4 with a reverse bypass 15 on the side of the valve 14 part
The injection was carried out with the gas discharge passage leading from the cavity 7 to the outside of the molds 3 and 4 open by the action of the valve 140. First, the small mass L that had advanced from the cavity 7 - When gas acts on the end face of the valve 14 on the gas vent groove 10 side, the valve 14 is not pushed by the gas having a small mass and is at the end face on the gas vent groove 10 side, and the bypass 15
The gas is discharged through a reverse gas discharge path consisting of 14 parts and valves, etc., and along the way, the small mass L gas is followed by L gas.
The large mass (molten metal to be injected) that has advanced from the cavity 7 directly acts on the end face of the valve 14 on the side of the gas venting mechanism 10 from the same direction as the moving direction of the valve 14. The valve 14 is moved to directly block the gas discharge path so that molten metal is not discharged from the valve 14 to the outside.
In this way, injection can be performed while degassing the molds 3 and 4 at a temperature of .degree.

なお、ガス抜き溝10内を上昇してきた溶融金属21が
直接バイパス15内に飛込まないようにするために、そ
して弁14が閉じる前に、その溶融金属21が弁14と
弁座12との間を通過しな(・ように、ノズル部16の
すぐ下のガス抜き溝10とバイパス150入口部とのな
す角は、鋭角または直角にした。
In addition, in order to prevent the molten metal 21 rising in the gas vent groove 10 from directly jumping into the bypass 15, the molten metal 21 is placed between the valve 14 and the valve seat 12 before the valve 14 is closed. The angle between the gas vent groove 10 immediately below the nozzle portion 16 and the inlet portion of the bypass 150 was set to be an acute angle or a right angle so that the gas vent groove 10 did not pass through the gap.

勿論、これは鋭角にする方が、より効果的である。Of course, it is more effective to make this angle acute.

この実施例におち・ては、この発明の金型用ガス抜き装
置を、固定金型3と可動金型40分割面部に設けたが、
これは、可動金型4と中子用金型や、2個の中子用金型
間とのように、その他の金型の分離面部や接触面部に設
けるようにしても良L・。
In this embodiment, the mold degassing device of the present invention was provided on the dividing surface of the fixed mold 3 and the movable mold 40.
This may be provided on the separation surface or contact surface of other molds, such as between the movable mold 4 and the core mold, or between two core molds.

なお、これら実施例にお(・て、ガス排出口20より、
下記に示す装置か真空装置の作動によって、ガスを積極
的に吸引すればさらに効果的である。
In addition, in these embodiments, from the gas exhaust port 20,
It is even more effective if the gas is actively sucked in by operating the device shown below or a vacuum device.

ガス排出口20からのガスの吸引を射出動作と同調させ
て行う場合は、例えば、第5図のようにして行う。
When the suction of gas from the gas discharge port 20 is performed in synchronization with the injection operation, it is performed as shown in FIG. 5, for example.

第5図にお℃・て、1は固定盤、2は可動盤、3は固定
金型、4は可動金型、5は押出板、6は押出ピン、7は
キャビティ、8は鋳込穴、27はマシンベース、28は
射出シリンダ、29はピストンロッド、30は射出プラ
ンジャ、31はプランジャチップ、32は鋳込スリーブ
である。
In Fig. 5, 1 is a fixed plate, 2 is a movable plate, 3 is a fixed mold, 4 is a movable mold, 5 is an extrusion plate, 6 is an extrusion pin, 7 is a cavity, and 8 is a casting hole. , 27 is a machine base, 28 is an injection cylinder, 29 is a piston rod, 30 is an injection plunger, 31 is a plunger tip, and 32 is a cast sleeve.

固定金型3と可動金型40分割面の上部に(東第1,2
図および第4図に示したこの発明の金型用ガス抜き装置
33を取付けた。
At the top of the fixed mold 3 and movable mold 40 dividing plane (East No. 1 and 2)
The mold degassing device 33 of the present invention shown in the figures and FIG. 4 was installed.

射出シリンダ28の上には、射出シリンダ28、と平行
に吸引シリンダ34を取付け、吸引シリンダ34のピス
トン35と一体になってL・るピストンロッド36の先
端部を、射出シリンダ28のピストンロッド29の先端
部とレバー37によって一体に連結し、2個のピストン
ロット29.36が同時に移動するようにした。
A suction cylinder 34 is installed above the injection cylinder 28 in parallel with the injection cylinder 28, and the tip of the L-shaped piston rod 36, which is integrated with the piston 35 of the suction cylinder 34, is attached to the piston rod 29 of the injection cylinder 28. The two piston rods 29 and 36 are integrally connected by a lever 37 so that the two piston rods 29 and 36 move simultaneously.

そして、金型用ガス抜き装置33のガス排出口20を、
吸引シリンダ34のヘッドエンド側に配管38で連結し
た。
Then, the gas exhaust port 20 of the mold gas venting device 33 is
It was connected to the head end side of the suction cylinder 34 by a pipe 38.

そして、射出シリンダ28の前進動作に連動させて、キ
ャビティ7内のガスを金型用ガス抜き装置33を介して
金型3,4外に排出しうるようにした。
In conjunction with the forward movement of the injection cylinder 28, the gas inside the cavity 7 can be discharged to the outside of the molds 3 and 4 via the mold gas venting device 33.

39は逆止弁である。ただし、吸引シリンダ34の内径
りを、鋳込スリーブ32の内径dより大きくして、鋳込
み時にキャビティ7内が負圧となり、ガス抜きが良好に
行えるようにした。
39 is a check valve. However, the inner diameter of the suction cylinder 34 is made larger than the inner diameter d of the casting sleeve 32, so that the inside of the cavity 7 becomes a negative pressure during casting, so that degassing can be performed satisfactorily.

なお、吸引シリンダ34による射出シリンダ28の出力
の低下は極めて少なく、はとんど影響されな〜・。
Note that the reduction in the output of the injection cylinder 28 due to the suction cylinder 34 is extremely small and is hardly affected.

なお、前記実施例にお℃・では、弁14を垂直方向に上
下動させるようにして、ダイカストマシンに使用したも
のを示したが、これは弁14を斜め上方向や水平方向や
下方向に移動させるようにしても良℃・し、また射出成
形機用として使用しても良い。
In addition, in the above embodiment, the valve 14 was moved up and down in the vertical direction and was used in a die-casting machine. It may be moved at a temperature of 10°C, or may be used for an injection molding machine.

この発明の他の実施例を第6〜8図に示す。Other embodiments of the invention are shown in FIGS. 6-8.

第6〜8図に示したものは、第4図に示したものを製作
図に即して書L・たものであり、したがって、第4図に
示したものとほとんど同じものである。
What is shown in FIGS. 6 to 8 is a version of what is shown in FIG. 4 based on the manufacturing drawings, and therefore is almost the same as what is shown in FIG.

第6〜8図におち・て、第4図に示したものと同じ部品
は、第4図で使用した符号と同じ符号であられす。
6 to 8, parts that are the same as those shown in FIG. 4 are designated by the same reference numerals as used in FIG. 4.

第6〜8図に示すものが、第4図に示すものと多少違つ
ところは、スプール22を組立分解可能に数部品で形成
し、前記したように、圧縮ばね17を室24内における
弁14の頭部26aの上面トスブール22の天井面との
間に取付け、弁14の下面に皿状の凹み14aを設げた
ことなどである。
What is shown in FIGS. 6 to 8 is somewhat different from that shown in FIG. The upper surface of the head 26a of the valve 14 is attached between the top surface of the toss boule 22 and the ceiling surface of the valve 14, and the lower surface of the valve 14 is provided with a dish-shaped recess 14a.

シリンダ18はブラケット40によって固定金型3に取
付け、ブラケット40の一部に取付けたガイド41によ
ってスプール22を摺動自在に保持した。
The cylinder 18 was attached to the fixed mold 3 by a bracket 40, and the spool 22 was slidably held by a guide 41 attached to a part of the bracket 40.

また、ブラケット40の側面にはリミットスイッチや無
接点スイッチなどのセンサー42゜43を設け、スプー
ル22の一部にはセンサー42.43を作動させるバー
44を取付け、このセンサー42,43の作動でスプー
ル22の下降限と上昇限を確認する。
Furthermore, sensors 42 and 43 such as limit switches and non-contact switches are provided on the side of the bracket 40, and a bar 44 that operates sensors 42 and 43 is attached to a part of the spool 22. Check the lower limit and upper limit of the spool 22.

弁14の頭部26aからは、バー45を、スプール22
の切欠部22aを通してスプール22の外まで伸ばして
設け、スプール22の一部にリミットスイッチや無接点
スイッチなどのセンサー46を取付け、バー45がセン
サー46から離れてL・ることを確認することによって
、弁14が溶融金属の鋳込み前に弁座12から確実に離
れて開L・て℃・ることを確認する。
The bar 45 is connected to the spool 22 from the head 26a of the valve 14.
By extending the bar 45 to the outside of the spool 22 through the notch 22a, attaching a sensor 46 such as a limit switch or a non-contact switch to a part of the spool 22, and confirming that the bar 45 is separated from the sensor 46. Before pouring molten metal, make sure that the valve 14 is securely separated from the valve seat 12 and opened.

そして、弁14が確実に開(・て〜・ることを確認した
ら、溶融金属の鋳込みを行うことができるし、また、前
記したように、鋳込み前や鋳込中に、ガス排出口より真
空装置の作動で、キャビティ7内のガスを積極的に吸引
して鋳込動作を行う減圧ダイカスト法や、鋳込み前にキ
ャビティT内を酸素などの反応性ガスで満たした後、鋳
込動作を行う無孔性ダイカスト法によるダイカストを行
うこともできる。
After confirming that the valve 14 is definitely open, the molten metal can be poured.Also, as mentioned above, before or during casting, a vacuum is drawn from the gas outlet. There is a low-pressure die-casting method in which the casting operation is performed by actively sucking the gas in the cavity 7 when the device is activated, or the casting operation is performed after filling the cavity T with reactive gas such as oxygen before casting. Die casting can also be carried out using a non-porous die casting method.

このように、この発明においては特許請求の範囲に記載
したような構成にしたので、従来の減圧法のように真空
ポンプや減圧タンクなどを用L・る必要もなく、構造が
極めてシングルである。
As described above, since the present invention has the configuration as described in the claims, there is no need to use a vacuum pump or a decompression tank as in the conventional depressurization method, and the structure is extremely simple. .

そして、この発明にお(・ては、被射出溶融物である溶
湯の慣性力を、金型外に通じるガス排出路を開〜・て℃
・る弁に直接作用させて、ガス排出路を直接遮断するよ
うにしたので大きな力で、素早く弁を締めることができ
る。
In this invention, the inertial force of the molten metal, which is the molten material to be injected, is absorbed by opening the gas exhaust path outside the mold.
・The valve acts directly on the valve and directly blocks the gas exhaust path, so the valve can be quickly tightened with a large force.

すなわち、この発明におL・では、ガス抜き溝を通って
弁の下のノズル部に高速で進んで来た溶湯を、弁の下に
衝突させることによって、弁を直接線めるようにしてお
り、L・わゆる、衝撃力による溶湯の運動エネルギ、す
なわち、溶湯の動圧によって弁を直接線めるようにして
L・る。
That is, in this invention, the molten metal that has advanced at high speed to the nozzle part under the valve through the gas vent groove collides with the bottom of the valve, so that it directly lines the valve. The kinetic energy of the molten metal due to the impact force, that is, the dynamic pressure of the molten metal, is used to directly line the valve.

この場合、弁を閉じる力は、溶湯が弁の底面に衝突する
速度の2乗に比例するので、非常に大きな力となってち
・る。
In this case, the force required to close the valve is proportional to the square of the speed at which the molten metal collides with the bottom of the valve, resulting in a very large force.

そして、弁の下面全体に溶湯を作用させることができる
ので、弁を閉じる力は大きく、また、弁を直接閉じて、
ガス排出路を弁で直接閉じるので、弁自体は簡単な構造
でその質量も比較的に軽く、弁を素早く閉じて、ガス排
出路を素早く確実容易に閉じることができる。
Since the molten metal can be applied to the entire bottom surface of the valve, the force to close the valve is large, and the valve can be closed directly.
Since the gas exhaust passage is directly closed by the valve, the valve itself has a simple structure and is relatively light in weight, and the valve can be quickly closed to quickly, reliably, and easily close the gas exhaust passage.

なお、この発明におち・てにチ弁を締めるのに要する時
間は、5?77sec程度の極めて短L・時間ですむ。
In addition, according to the present invention, the time required to close the valve at the bottom is extremely short, about 5 to 77 seconds.

また、この発明にお(・ては、溶湯の慣性力の作用で、
ガス排出中の弁を直接かつ瞬時に締めるようにしたので
、ガス抜き溝から弁の移動路の側面に通じたバイパスと
も呼ばれるガス排出用の通路の入口や途中を狭くして抵
抗をもたせる必要もなく、この通路を必要以上に長(し
ておく必要もなく、通路を単純化して比較的に広くとれ
るので、ガス抜きの能力も大きく、ガス抜きを確実に行
える。
In addition, in this invention, due to the action of the inertial force of the molten metal,
Since the valve that is discharging gas is directly and instantly closed, there is no need to create resistance by narrowing the entrance or middle of the gas discharge passage, also known as a bypass, which leads from the gas vent groove to the side of the valve travel path. There is no need to make this passage longer than necessary, and the passage can be simplified and made relatively wide, so the degassing capacity is large and degassing can be performed reliably.

そもそも、射出時に金型キャビティよりガスを充分に抜
き、射出製品中に巣ができな(・ようにし、満足のL・
く射出動作を継続して行うには、弁部よりガスは充分に
抜けるが、溶湯は外部に流出しないようにする必要があ
るが、そのためには、溶湯がガス排出用の通路を通って
弁の開き部である弁座部に近づL・て来るまでは弁を開
L・ておき、ガスが充分に抜けきったとき、弁を素早く
、すなわち、極めて短時間で締める必要があるが、この
発明では、前記したように、この動作を確実容易に行う
ことができ、かつ、毎射出ごとに繰返して行うことがで
きる。
In the first place, during injection, gas should be sufficiently vented from the mold cavity to prevent the formation of cavities in the injection product, and to achieve a satisfactory L.
In order to continue the injection operation, sufficient gas can escape from the valve part, but it is necessary to prevent the molten metal from flowing outside. It is necessary to keep the valve open until you approach the valve seat, which is the opening part of the valve, and then close the valve quickly, that is, in a very short time, when the gas has fully escaped. In the present invention, as described above, this operation can be performed reliably and easily, and can be performed repeatedly for each injection.

また、この発明のもの(東弁自体が1個でできて℃・て
単純なので、ガス抜き装置全体の構造も比較的に簡単で
あり、保守点検も容易である。
Furthermore, since the present invention (the east valve itself is made of one piece and is simple), the structure of the entire degassing device is relatively simple, and maintenance and inspection are easy.

さらに、重要なことは、この発明にお(・では、ガス抜
き溝の端部で金型の分離面に沿った軸線方向に摺動する
弁頭部を有するディスクタイプの弁と、弁部のスプール
の端部に前記弁頭部が着座する弁座を設けたので、弁が
溶湯の慣性力で押されて締るときに、弁頭部の裏側外周
面が傾斜面を有する弁座に完全に密着するように強く押
付げられ一シールが確実に行われる。
Furthermore, it is important to note that the present invention includes a disk-type valve having a valve head that slides in the axial direction along the separating surface of the mold at the end of the gas vent groove, and Since a valve seat on which the valve head is seated is provided at the end of the spool, when the valve is pushed and tightened by the inertia of the molten metal, the outer circumferential surface of the back side of the valve head is completely attached to the valve seat having an inclined surface. It is strongly pressed so that it comes into close contact with the body, ensuring a secure seal.

また、スプールの弁座と弁頭部との間に溶湯が入ってつ
まることはなく、弁の作動不良を起こすことはなL・の
で、弁を再び開かせることも当然容易に行える。
Further, the gap between the valve seat of the spool and the valve head will not be clogged with molten metal, and the valve will not malfunction, so it is of course easy to open the valve again.

また、弁頭部や弁座部が溶湯の高温のために熱膨張して
直径が変わっても、傾斜した弁座部でシールされるので
、何ら悪影響を受けることはなく、弁は常に確実に締め
られる。
In addition, even if the valve head and valve seat change their diameter due to thermal expansion due to the high temperature of the molten metal, the slanted valve seat seals the valve head and valve seat, so there will be no adverse effects, and the valve will always be securely operated. It is tightened.

したがって、この装置は作動が安定して〜・て確実なの
で、毎射出ごとに繰返して使用しても支障が起きること
はなく、半永久的に連続して使用することができる。
Therefore, the operation of this device is stable and reliable, so even if it is used repeatedly for each injection, no trouble will occur, and it can be used continuously for a semi-permanent period.

勿論、ディスクタイプの弁はスプールタイプの弁と違っ
てその摺動面が少な(・ので、作動抵抗も小さく、実用
的である。
Of course, unlike spool-type valves, disc-type valves have less sliding surface area, so they have less operating resistance and are more practical.

また、構造も比較的に簡単で、動作もしやすく、安価に
なる。
Furthermore, the structure is relatively simple, easy to operate, and inexpensive.

また、この発明にお℃・では、弁頭部の回りにパリが入
っても、これはスプールとともに弁が持ち上げられたと
きに、通路やノズル部中に入った溶湯の固ったものと一
体になってるので、これらはすべて射出製品と一体にな
って金型から取出され、自然に除去される。
In addition, in this invention, even if there is debris around the valve head, this will be combined with the solidified molten metal that entered the passageway and nozzle when the valve was lifted together with the spool. All of these are taken out of the mold together with the injection product and removed naturally.

そして、型開時に、スプールを持上げて弁ととも持上げ
ることができるので、その時、弁を開(゛て圧縮空気に
よって弁頭部、弁座部、弁室などを容易に掃除すること
ができ、ガス抜き装置の毎回の作動をより充分に行える
ようにすることができる。
When the mold is opened, the spool can be lifted up along with the valve, allowing the valve to be opened (and the valve head, valve seat, valve chamber, etc. to be easily cleaned with compressed air). , the degassing device can be operated more satisfactorily each time.

また、この他に、つぎのような効果がある。In addition to this, there are the following effects.

(1)ガス抜き溝を直進して来る被射出溶融物の進行方
向に、被射出溶融物で直接押される弁によッテ、ガスの
排出路を遮断するようにしたので、弁の作動が早く、か
つ、確実であり、ガス抜きと、弁部からの被射出溶融物
の排出防止を確実容易に行える。
(1) The valve is pushed directly by the molten material to be injected in the direction of movement of the molten material to be injected, which is moving straight through the gas vent groove, and the gas discharge path is blocked, so that the operation of the valve is prevented. It is quick and reliable, and gas venting and prevention of discharge of the molten material to be injected from the valve part can be performed reliably and easily.

(2)射出時にガス抜きを充分に行えるので、射出製品
中の残存ガスが大幅に減少し、射出製品の湯まわり、耐
圧、気密性が著しく向上する。
(2) Since gas can be sufficiently vented during injection, residual gas in the injection product is significantly reduced, and the hot water performance, pressure resistance, and airtightness of the injection product are significantly improved.

(3) キャビティ外周のエヤベント部におけるパリ
の発生が減少するので、パリをのけなくても良く、金型
に傷をつげることがな℃・。
(3) Since the occurrence of debris at the air vent area around the cavity periphery is reduced, there is no need to remove the debris, and there is no risk of damaging the mold.

その結果、自動化が容易になり、金型の寿命も延びる。The result is easier automation and longer mold life.

(4)ガス抜きが充分に行われるので、低い射出圧力で
良も・射出製品が得られる。
(4) Since gas degassing is sufficient, good quality injection products can be obtained with low injection pressure.

勿論、このために、自動化も容易になり、金型の寿命も
延びる。
Of course, this also facilitates automation and extends the life of the mold.

すなわち、従来の一般的な射出のように、キャビティ内
にガスがある状態で射出すれば、キャビティから抜けき
らないガスを圧縮しながら被射出溶融物である溶湯なキ
ャビティ内に充填することになるので、キャビティの隅
々にまで溶湯を充填するためには、非常に大きな力を要
する。
In other words, if you inject with gas in the cavity as in conventional general injection, the gas that cannot escape from the cavity will be compressed and filled into the cavity with molten metal, which is the molten material to be injected. Therefore, a very large force is required to fill every corner of the cavity with molten metal.

これに対して、この発明を用いれば、キャビティ内のガ
スが充分に抜ける状態で射出するので、射出圧力を比較
的低くした状態で、溶湯がキャビティの隅々にまで充分
に充填された満足のL・く射出製品を得ることができる
On the other hand, if this invention is used, the injection is performed after the gas in the cavity is sufficiently released, so that the injection pressure can be kept relatively low to ensure that the molten metal is fully filled to every corner of the cavity. It is possible to obtain an L. injection product.

また、射出圧力が低L゛ので、パリの発生がなL・。In addition, since the injection pressure is low, there is no occurrence of paris.

したがって、隅々にまで溶湯がまわって、パリもなL・
良い射出製品が得られる。
Therefore, the molten metal spreads to every corner, making the L.
Good injection products can be obtained.

なお、実験結果によれば、前記した従来の射出におL・
て、キャビティ内の溶湯圧力が約700〜1000ky
/crA必要で、高速射出速度として約1.5〜2.5
m1sec必要であったものが、射出製品の形状、寸法
等にもよるが、この発明を用ち・れば、約200〜50
0 ky/catのキャビティ内溶湯圧力と、約1m/
secの高速射出速度で充分であった。
In addition, according to the experimental results, L・
The molten metal pressure inside the cavity is approximately 700 to 1000 ky.
/crA is required, about 1.5 to 2.5 as high injection speed
Although it depends on the shape and dimensions of the injection product, what used to require 1 sec can be reduced to about 200 to 50 sec by using this invention.
Molten metal pressure in the cavity of 0 ky/cat and approximately 1 m/
A high injection speed of sec was sufficient.

また、射出製品にパリがでなげれば、従来のように、パ
リが金型に残ることもなく、金型に残ったパリを取るた
めの掃除もする必要がな℃・ので、自動化連続運転が容
易になる。
In addition, once the injected product is free of paris, no paris remains in the mold, unlike conventional methods, and there is no need to clean the mold to remove the remaining paris, so automatic continuous operation is possible. becomes easier.

また、比較的に低速低圧で射出できるので、射出終了時
の衝撃も少なく、金型の焼付きも少なく、金型の一部が
破損することもなL・。
In addition, since injection can be performed at relatively low speed and low pressure, there is less shock at the end of injection, less seizure of the mold, and no damage to parts of the mold.

特に、金型の中子部や細くて長い鋳抜きピンなどの金型
突出部が折れたり曲ったりすることもな(、金型の寿命
も延びるし、良も・製品を連続して得ることもできる。
In particular, the protruding parts of the mold, such as the core part of the mold and long thin cast-out pins, will not break or bend (this will extend the life of the mold and ensure that high-quality products can be obtained continuously). You can also do it.

(5)ガス抜きが充分に行われるので、射出条件の幅が
拡大するとともに、試打時間の短縮と射出製品の品質の
安定化がはかれる。
(5) Since gas degassing is sufficiently performed, the range of injection conditions is expanded, the test shot time is shortened, and the quality of the injection product is stabilized.

従来より、射出圧力、射出速度、高速射出スタート位置
の良℃・条件をさがし、ガス抜きの良好なところにセッ
トしてL・たが、この条件を見つげるのに時間がかかり
、かつ、この条件も射出時に次第に変わって℃・たが、
この発明を用℃・れば、ガス抜きが充分に行われるので
、射出条件を選択する幅がかなり拡大する。
Traditionally, we have searched for good conditions for injection pressure, injection speed, and high-speed injection start position, and set the temperature at a location with good degassing.However, it took time to find these conditions, and The conditions also gradually changed during injection, however,
By using this invention, degassing can be carried out sufficiently, so the range of options for selecting injection conditions can be considerably expanded.

(6)従来より、真空装置により金型間の薄い溝を通し
てキャビティ、内の空気を外に抜くことも考えられてい
たが、この場合、キャビティ内の空気の抜き量が少な〜
・と、固定金型と可動金型の合わせ面から外の空気が入
り、キャビティが真空にならなし・が、この発明でを^
多量の空気を抜くので、金型の合わせ面の精度はそれ程
問題にならず、キャビティの空気を充分に抜(ことがで
きる。
(6) Conventionally, it has been considered to use a vacuum device to extract the air inside the cavity through a thin groove between the molds, but in this case, the amount of air removed from the cavity is small.
・With this invention, outside air enters from the mating surfaces of the fixed mold and the movable mold, and the cavity does not become a vacuum.
Since a large amount of air is removed, the precision of the mating surfaces of the molds is not a big problem, and the air in the cavity can be removed sufficiently.

したがって、減圧法と併用すれば、効果はさらに増大す
る。
Therefore, if used in combination with the decompression method, the effect will further increase.

(7)キャビティ内を酸素などの活性ガスの雰囲気にし
て射出する無孔性ダイカスト法と併用すれば、効果が犬
きL・。
(7) If used in conjunction with the non-porous die casting method, in which the cavity is filled with an atmosphere of active gas such as oxygen, the effect will be even greater.

この場合、この発明のガス抜き装置の開いた弁部から、
活性ガスをキャビティ内に入れた後、射出する。
In this case, from the open valve part of the gas venting device of this invention,
After entering the active gas into the cavity, it is injected.

射出中にも活性ガスをキャビティ内に入れることもでき
る。
Active gas can also be introduced into the cavity during injection.

(8)マグネシウムのダイカストに用L・れば、効果が
犬きL−oすなわち、アルミニウムのダイカストでは、
ゆっくり射出して、キャビティ内のガスをベント部から
抜くように試みることもできたが、マグネシウム合金は
凝固速度が早L・ので、低速射出することができず、射
出開始後、すぐ高速射出に移る必要があった。
(8) If L is used for magnesium die-casting, the effect will be worse. In other words, for aluminum die-casting,
I could try to inject slowly and let the gas in the cavity out through the vent, but since the solidification rate of magnesium alloy is so fast, low-speed injection was not possible, and I had to start high-speed injection immediately after starting injection. I needed to move.

もともと、射出時には、キャビティの容積の約2倍の容
積を有するキャビティ内と射出スリーブ内の多量のガス
を金型外へ逃す必要があるが、マグネシウムのダイカス
トの場合は、アルミニウムのダイカストに比べて、高速
射出する必要があるので、どうしても射出製品へのガス
のまき込みが大きかった。
Originally, during injection, it is necessary to release a large amount of gas from the cavity and injection sleeve, which have a volume approximately twice that of the cavity, to the outside of the mold, but in the case of magnesium die casting, compared to aluminum die casting, , Since high-speed injection was required, a large amount of gas was forced into the injection product.

しかし、この発明を用いれば、ガス抜きが充分に行われ
るので、マグネシウムのダイカストでも、気泡のない良
質の射出製品を確実容易に得ることができる。
However, if the present invention is used, degassing is sufficiently performed, so even when die-casting magnesium, it is possible to reliably and easily obtain a high-quality injection product without air bubbles.

(9)ホットチャンバ一式ダイカストにも用L・ること
かできる。
(9) Can also be used for hot chamber complete die casting.

αO)1従来より、型開後、金型に冷却水や水溶性の離
型剤をスプレーしていたが、型締を行ったとき、金型に
水滴が残って℃・ると水蒸気の逃げ場がなく、そのまま
射出すると、射出製品の表面が黒くなったり、湯まわり
が悪くなり、良質の射出製品を得ることができない。
αO) 1 Conventionally, cooling water or a water-soluble mold release agent was sprayed onto the mold after the mold was opened, but when the mold was clamped, if water droplets remained on the mold and the temperature reached ℃, there was a place for water vapor to escape. If the product is injected as is, the surface of the injected product will become black, the hot water flow will be poor, and it will not be possible to obtain a high-quality injected product.

したがって、金型表面の水滴が充分に乾燥してなくなっ
た後、型締を行う必要があった。
Therefore, it was necessary to clamp the mold after the water droplets on the surface of the mold had sufficiently dried and disappeared.

しかし、この発明を用いれば、型締時にガス抜き装置の
開いて〜・る弁を通して、金型内に熱風を送り込み、金
型内の水蒸気を射出スリーブを通して外へ逃すこともで
きる。
However, if this invention is used, hot air can be sent into the mold through the valve that opens in the gas venting device when the mold is clamped, and the water vapor inside the mold can be released to the outside through the injection sleeve.

この熱風の送り込みは型締後や給湯時にも行える。This feeding of hot air can also be performed after mold clamping or during hot water supply.

したがって、型締時にガス抜き装置を通してキャビティ
内に熱風を送り込むようにすれば、スプレー後、す早く
型締をすることができ、サイクルが短くなる。
Therefore, if hot air is sent into the cavity through the gas venting device during mold clamping, the mold can be clamped quickly after spraying, and the cycle can be shortened.

αυ勿論、恒久的な弁装置として使用することができる
αυ can of course be used as a permanent valve device.

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

第゛1図はこの発明の1実施例を示す縦断面図、第2図
は第1図の■−■線断面図、第3図a −dは第1,2
図に示した摺動弁部の作動説明図、第4図は第2図の1
部拡大図、第5図はこの発明の他の実施例を示す縦断面
図、第6図はこの発明のさらに他の実施例を示す縦断面
図、第7図は第6図の■−■線断面図、第8図は第7図
の■−■線断面図である。 1・・・・・・固定盤、2・・・・・・可動盤、3・・
・・・・固定金型、4・・・・・・可動金型、γ・・・
・・・キャビティ、9・・・・・・ガス抜き道、10・
・・・・・ガス抜き溝、11・・・・・・弁室、12・
・・・・併産、13・・・・・・ガス排出穴、14・・
・・・・弁、15・・・・・・バイパス(第1のガス排
出路)、17・・・・・・圧縮ばね、18・・・・・・
シリンダ、20・・・・・・ガス排出口(第2のガス排
出路)、21・・・・・・溶融金属、22・・・・・・
スプール、28・・・・・・射出シリンダ、29゜36
・・・・・・ピストンロッド、30・・・61.射出プ
ランジャ、31・・・・・・プランジャチップ、32・
・・・・・鋳込スリーブ、34・・・・・・吸引シリン
ダ。
Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 a - d are the first and second
An explanatory diagram of the operation of the sliding valve shown in the figure, Figure 4 is 1 in Figure 2.
5 is a vertical cross-sectional view showing another embodiment of the present invention, FIG. 6 is a vertical cross-sectional view showing still another embodiment of the present invention, and FIG. 7 is a cross-sectional view of FIG. 8 is a sectional view taken along the line ■--■ in FIG. 7. 1...Fixed plate, 2...Movable plate, 3...
...Fixed mold, 4...Movable mold, γ...
...Cavity, 9...Gas venting path, 10.
...Gas vent groove, 11...Valve chamber, 12.
... Co-production, 13 ... Gas discharge hole, 14 ...
... Valve, 15 ... Bypass (first gas discharge path), 17 ... Compression spring, 18 ...
Cylinder, 20... Gas exhaust port (second gas exhaust path), 21... Molten metal, 22...
Spool, 28...Injection cylinder, 29°36
...Piston rod, 30...61. Injection plunger, 31...Plunger tip, 32.
...Cast sleeve, 34...Suction cylinder.

Claims (1)

【特許請求の範囲】[Claims] 1 金型の分離面部に、キャビティから導かれたガス抜
き溝の端部で金型の分離面に沿った軸線方向に摺動する
弁頭部を有するディスクタイプの弁、この弁を摺動自在
に支持してそれ自体が軸線方向に摺動しうるスプール、
および、前記ガス抜き溝の途中から前記弁頭部の側面に
通じた第1のガス排出路を設け、かつ、前記スプールの
内部を金型の外に連通させた第2のガス排出路を設ける
とともに、前記弁側のスプールの端部に前記弁頭部が着
座する弁座を設け、前記第1のガス排出路を開(・てL
・る前記弁をキャビティから進んで来る被射出溶融物の
慣性力の作用で直接動かして前記第1のガス排出路を直
接遮断しうるようにした金型用ガス抜き装置。
1. A disc-type valve that has a valve head on the separation surface of the mold that slides in the axial direction along the separation surface of the mold at the end of the gas vent groove led from the cavity, and this valve can be slid freely. a spool supported on and capable of sliding itself axially;
and providing a first gas exhaust path leading from the middle of the gas vent groove to a side surface of the valve head, and providing a second gas exhaust path communicating the inside of the spool with the outside of the mold. At the same time, a valve seat on which the valve head is seated is provided at the end of the spool on the valve side, and the first gas discharge path is opened.
- A gas venting device for a mold, wherein the valve is directly moved by the inertial force of the molten material to be injected advancing from the cavity to directly shut off the first gas exhaust path.
JP55027891A 1979-09-27 1980-03-07 Gas venting device for mold Expired JPS5846387B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP55027891A JPS5846387B2 (en) 1980-03-07 1980-03-07 Gas venting device for mold
US06/188,257 US4431047A (en) 1979-09-27 1980-09-19 Gas-venting arrangement incorporated with a mold
CA000360858A CA1151377A (en) 1979-09-27 1980-09-23 Gas-venting arrangement incorporated with a mold
DE3036233A DE3036233C2 (en) 1979-09-27 1980-09-25 Degassing device for a die casting mold
IT24900/80A IT1133630B (en) 1979-09-27 1980-09-25 GAS VENT DEVICE INCORPORATED WITH A MOLD
SU802986747A SU1082311A3 (en) 1979-09-27 1980-09-26 Vent device for casting mold
CH7219/80A CH654768A5 (en) 1979-09-27 1980-09-26 DEGASSING DEVICE ON A PRESSURE OR INJECTION MOLD.
FR8020721A FR2466292A1 (en) 1979-09-27 1980-09-26 EVENT DEVICE FOR INJECTION MOLD
BR8006217A BR8006217A (en) 1979-09-27 1980-09-26 GAS BLEEDING ARRNAJO
ES495400A ES8201052A1 (en) 1979-09-27 1980-09-26 Gas-venting arrangement incorporated with a mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55027891A JPS5846387B2 (en) 1980-03-07 1980-03-07 Gas venting device for mold

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP54123167A Division JPS59309B2 (en) 1979-09-27 1979-09-27 Injection molding method with degassing inside the mold and degassing device for mold

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP22129984A Division JPS60127063A (en) 1984-10-23 1984-10-23 Injection molding method using venting device for die
JP22129884A Division JPS60133964A (en) 1984-10-23 1984-10-23 Installing method of valve in vent device for die

Publications (2)

Publication Number Publication Date
JPS5647260A JPS5647260A (en) 1981-04-28
JPS5846387B2 true JPS5846387B2 (en) 1983-10-15

Family

ID=12233508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55027891A Expired JPS5846387B2 (en) 1979-09-27 1980-03-07 Gas venting device for mold

Country Status (1)

Country Link
JP (1) JPS5846387B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194855U (en) * 1982-06-15 1983-12-24 マツダ株式会社 Die casting machine vent valve device
JPS59107759A (en) * 1982-12-13 1984-06-22 Nippon Light Metal Co Ltd Pressure casting device
JPH01127822U (en) * 1988-02-23 1989-08-31

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5499735A (en) * 1977-11-17 1979-08-06 Hodler Fritz Ventilating valve for diecast metal mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5499735A (en) * 1977-11-17 1979-08-06 Hodler Fritz Ventilating valve for diecast metal mold

Also Published As

Publication number Publication date
JPS5647260A (en) 1981-04-28

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