JPH06179046A - Releasing agent coating device - Google Patents

Releasing agent coating device

Info

Publication number
JPH06179046A
JPH06179046A JP35331892A JP35331892A JPH06179046A JP H06179046 A JPH06179046 A JP H06179046A JP 35331892 A JP35331892 A JP 35331892A JP 35331892 A JP35331892 A JP 35331892A JP H06179046 A JPH06179046 A JP H06179046A
Authority
JP
Japan
Prior art keywords
release agent
cavity
passage
releasing agent
mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP35331892A
Other languages
Japanese (ja)
Inventor
Hidesato Uebayashi
秀悟 植林
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP35331892A priority Critical patent/JPH06179046A/en
Publication of JPH06179046A publication Critical patent/JPH06179046A/en
Pending legal-status Critical Current

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Landscapes

  • Casting Devices For Molds (AREA)
  • Coating Apparatus (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To uniformly coat a wall surface of a cavity formed in a die with a releasing agent. CONSTITUTION:The device has a releasing agent channel 116 whose upper end is connected to a lower part of a cavity 110, a pin 118p opening and closing the releasing agent channel 116, a releasing agent feeding and collecting device 120 (the following is as a feed collect device 120) which is connected to the releasing agent channel 116, forcibly feeds a liquid releasing agent with a prescribed pressure, further releases the forcibly feeding pressure of the releasing agent after forcibly feeding the releasing agent, and collects the releasing agent naturally flowing out from the releasing agent channel 116, channels 136, 146 opening the upper part of the cavity 110 into atmosphere, and an opening and closing mechanism 138p, 148 opening and closing this channel 136, 146. Therefore, when the releasing agent channel 116 is opened and the releasing agent is forcibly fed from the feed collect device 120 in a state opening the cavity 110 into atmosphere with the channel 136, 146, the inside of the cavity 110 can be filled with the releasing agent. Further, the feed collect device 120 is switched to the collecting side and the forcibly feeding pressure of the releasing agent is released, the releasing agent inside the cavity 110 flows out with a self-weight.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、鋳造後に、金型の製品
成形面に離型剤を塗布する離型剤塗布装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold release agent application device for applying a mold release agent to a product molding surface of a mold after casting.

【0002】[0002]

【従来の技術】これに関する従来技術が、実開昭61−
31544号公報に記載されている。この鋳造装置は、
図3に示されるように、上金型1と下金型2とを備えて
おり、両金型1,2が型締めされた状態で内部にはキャ
ビティ3が形成される。また、前記下金型2にはキャビ
ティ3に溶湯を導くための湯道4が形成されており、こ
の湯道4に対して離型剤塗布装置の離型剤通路5が接続
されている。さらに、この離型剤通路5と湯道4との接
続部分には、前記離型剤通路5を開閉するストッパ6が
設けられている。なお、前記ストッパ6はシリンダ機構
7によって作動される構造であり、鋳造中、前記離型剤
通路5はストッパ6によって閉鎖されている。前記離型
剤通路5の他端には耐圧ホース9を介して離型剤供給回
収機構20が接続されている。離型剤供給回収機構20
は、離型剤圧送タンク11およびコンプレッサ12を備
える離型剤供給部と、離型剤回収タンク13および真空
ポンプ14を備える離型剤回収部とから構成されてお
り、切換弁10によって離型剤供給部と離型剤回収部と
を切り換えることができるようになっている。さらに前
記切換弁10によって前記コンプレッサ12からの空気
のみを圧送できるようにもなっている。
2. Description of the Related Art The related art relating to this is the actual development of 61-
No. 31544. This casting machine
As shown in FIG. 3, an upper mold 1 and a lower mold 2 are provided, and a cavity 3 is formed inside when the molds 1 and 2 are clamped. Further, a runner 4 for guiding the molten metal to the cavity 3 is formed in the lower mold 2, and a release agent passage 5 of a release agent coating device is connected to the runner 4. Further, a stopper 6 for opening and closing the release agent passage 5 is provided at a connecting portion between the release agent passage 5 and the runner 4. The stopper 6 has a structure that is operated by a cylinder mechanism 7, and the mold release agent passage 5 is closed by the stopper 6 during casting. A release agent supply / recovery mechanism 20 is connected to the other end of the release agent passage 5 via a pressure resistant hose 9. Release agent supply and recovery mechanism 20
Is composed of a release agent supply unit including a release agent pressure feed tank 11 and a compressor 12, and a release agent recovery unit including a release agent recovery tank 13 and a vacuum pump 14. The agent supply unit and the release agent recovery unit can be switched. Further, only the air from the compressor 12 can be pumped by the switching valve 10.

【0003】前記鋳造装置によると、鋳造が終了して製
品が取出されると型締めが行われ、ストッパ6が開かれ
る。この状態で切換弁10によって離型剤通路5が耐圧
ホース9を介して離型剤圧送タンク11およびコンプレ
ッサ12と連通することにより、離型剤が圧縮空気とと
もに湯道4からキャビティ3内に送り込まれる。次に、
切換弁10が切り換えられて、離型剤通路5が耐圧ホー
ス9を介してコンプレッサ12のみと連通し、キャビテ
ィ3に圧縮空気が送り込まれる。この圧縮空気によって
離型剤がキャビティ3内で拡散される。さらにこの後、
切換弁10が再び切り換えられて、離型剤通路5が耐圧
ホース9を介して離型剤回収タンク13および真空ポン
プ14と連通する。これによって、キャビティ3内が真
空ポンプ14によって吸引されて余剰の離型剤が離型剤
回収タンク13に回収され、離型剤の塗布が終了する。
According to the above casting apparatus, when casting is completed and the product is taken out, the mold is clamped and the stopper 6 is opened. In this state, the switching agent 10 causes the release agent passage 5 to communicate with the release agent pressure-feeding tank 11 and the compressor 12 via the pressure-resistant hose 9, so that the release agent is sent from the runner 4 into the cavity 3 together with the compressed air. Be done. next,
The switching valve 10 is switched, the release agent passage 5 communicates only with the compressor 12 via the pressure resistant hose 9, and compressed air is sent to the cavity 3. The release agent is diffused in the cavity 3 by the compressed air. After this,
The switching valve 10 is switched again so that the release agent passage 5 communicates with the release agent recovery tank 13 and the vacuum pump 14 via the pressure resistant hose 9. As a result, the inside of the cavity 3 is sucked by the vacuum pump 14, excess surplus of the release agent is recovered in the release agent recovery tank 13, and the application of the release agent is completed.

【0004】[0004]

【発明が解決しようとする課題】しかしながら上記した
従来の離型剤塗布方法によると、離型剤供給回収機構2
0によって供給される離型剤は金型1,2の湯道4より
圧縮空気とともにキャビティ3内に送り込まれる。即
ち、密閉されたキャビティ3の内部に一方向から噴霧状
の離型剤が吹き付けられることになる。しかしながら前
記金型1,2には、キャビティ3内の空気を逃がす通路
が設けられていないために、噴霧状の離型剤が湯道4か
らキャビティ3の内部に吹き込まれると、キャビティ3
内の空気は圧縮され、この圧縮された空気に遮られて前
記湯道4から離れた位置にあるキャビティ3の内壁面に
は離型剤が付着し難くなる。このため前記金型1,2が
閉じられた状態では、キャビティ3の内壁面全域に均等
に離型剤を付着させるのは困難である。本発明の技術的
課題は、金型が閉じられた状態でキャビティ内に液状の
離型剤を注入し、前記キャビティ内が離型剤で満たされ
た後に、その離型剤を自重により流出させることによ
り、前記キャビティの内壁面にむらなく均等に離型剤を
塗布させようとするものである。
However, according to the above-mentioned conventional mold release agent coating method, the mold release agent supply / recovery mechanism 2 is used.
The release agent supplied by 0 is sent into the cavity 3 together with the compressed air from the runners 4 of the molds 1 and 2. That is, the spray-shaped release agent is sprayed from one direction inside the closed cavity 3. However, since the molds 1 and 2 are not provided with passages for allowing the air in the cavity 3 to escape, when a spray-like mold release agent is blown from the runner 4 into the cavity 3,
The air inside is compressed and blocked by the compressed air, so that the mold release agent is less likely to adhere to the inner wall surface of the cavity 3 located at a position away from the runner 4. Therefore, when the molds 1 and 2 are closed, it is difficult to uniformly apply the release agent to the entire inner wall surface of the cavity 3. The technical problem of the present invention is to inject a liquid mold release agent into the cavity in a state where the mold is closed, and after the cavity is filled with the mold release agent, let the mold release agent flow out by its own weight. As a result, the mold release agent is evenly and evenly applied to the inner wall surface of the cavity.

【0005】[0005]

【課題を解決するための手段】上記した課題は、以下の
特徴を有する離型剤塗布装置によって解決される。即
ち、本発明に係る離型剤塗布装置によると、金型の内部
に縦方向に形成された通路であり、その上端がキャビテ
ィの下部に接続され、下端が金型の外部で開口する離型
剤通路と、前記離型剤通路を開閉する離型剤通路開閉機
構と、前記離型剤通路の下端に接続されており、液状の
離型剤を所定圧力で圧送し、さらに前記離型剤の圧送後
にその離型剤の圧送圧力を解除して、前記離型剤通路か
ら自然流出する離型剤を回収する離型剤供給回収機構
と、金型内に形成された通路であり、その一端が前記キ
ャビティの上部に接続され、他端が前記金型の外部で開
口する大気開放通路と、前記大気開放通路を開閉する大
気開放通路開閉機構と、を有している。
The above-mentioned problems can be solved by a release agent coating device having the following features. That is, according to the mold release agent coating device of the present invention, the mold is a passage formed in the mold in a vertical direction, the upper end of which is connected to the lower part of the cavity and the lower end of which is opened outside the mold. An agent passage, a releasing agent passage opening / closing mechanism for opening and closing the releasing agent passage, and a lower end of the releasing agent passage, which are connected to a liquid releasing agent by pressure at a predetermined pressure, and further, the releasing agent. After releasing the pressure of the release agent, the release agent supply and recovery mechanism for recovering the release agent that naturally flows out from the release agent passage, and the passage formed in the mold, One end is connected to the upper portion of the cavity, and the other end has an atmosphere opening passage that opens outside the mold, and an atmosphere opening passage opening / closing mechanism that opens and closes the atmosphere opening passage.

【0006】[0006]

【作用】本発明によると、キャビティの内壁面に離型剤
を塗布するには、先ず、大気開放通路開閉機構によって
大気開放通路を開放して、キャビティの上部を金型の外
部に連通させる。次に、離型剤通路開閉機構によって離
型剤通路を開放してキャビティの下部を離型剤供給回収
機構に連通させる。この状態で、離型剤供給回収機構を
駆動して、液状の離型剤を所定圧力で圧送する。これに
よって前記キャビティ内には、離型剤通路を介して離型
剤が下方から注入される。この時、前記キャビティ内の
空気は離型剤によって下方から押されて上部の大気開放
通路から効率的に外部に排出される。ここで、離型剤が
前記キャビティの最上部にまで到達するタイミングで大
気開放通路開閉機構を作動させて大気開放通路を閉鎖す
れば、キャビティ内に供給された離型剤が金型の外部に
溢れ出ることがない。前記キャビティ内が離型剤で満た
されると、離型剤供給回収機構を回収側に切り換えて離
型剤に加えた圧送圧力を解除する。さらに大気開放通路
開閉機構によって大気開放通路を再び開放する。これに
よってキャビティに供給された離型剤は、自重によって
自然に前記キャビティから流出して、離型剤供給回収機
構に回収される。この結果、キャビティの内壁面には離
型剤がむらなく均等に塗布される。なお、前記キャビテ
ィの内壁面に離型剤が塗布された後に、キャビティ内を
減圧すれば、前記離型剤の乾燥が効率的に行われる。ま
た、前記離型剤通路開閉機構および大気開放通路開閉機
構によって離型剤通路および大気開放通路を閉鎖すれ
ば、通常通りに鋳造を実施することができる。
According to the present invention, in order to apply the mold release agent to the inner wall surface of the cavity, first, the atmosphere opening passage opening / closing mechanism opens the atmosphere opening passage so that the upper portion of the cavity communicates with the outside of the mold. Next, the release agent passage opening / closing mechanism opens the release agent passage to connect the lower portion of the cavity to the release agent supply / recovery mechanism. In this state, the release agent supply / recovery mechanism is driven to pump the liquid release agent at a predetermined pressure. As a result, the mold release agent is injected into the cavity from below through the mold release agent passage. At this time, the air in the cavity is pushed from below by the release agent and is efficiently discharged to the outside from the atmosphere opening passage in the upper portion. Here, if the atmosphere opening passage opening / closing mechanism is operated and the atmosphere opening passage is closed at the timing when the releasing agent reaches the uppermost part of the cavity, the releasing agent supplied into the cavity is discharged to the outside of the mold. It never overflows. When the inside of the cavity is filled with the release agent, the release agent supply / recovery mechanism is switched to the recovery side to release the pressure-feeding pressure applied to the release agent. Further, the atmosphere opening passage opening / closing mechanism reopens the atmosphere opening passage. The release agent thus supplied to the cavity naturally flows out from the cavity by its own weight and is recovered by the release agent supply / recovery mechanism. As a result, the release agent is evenly and evenly applied to the inner wall surface of the cavity. In addition, if the pressure inside the cavity is reduced after the release agent is applied to the inner wall surface of the cavity, the release agent can be efficiently dried. Further, if the release agent passage and the atmosphere opening passage are closed by the release agent passage opening and closing mechanism and the atmosphere opening passage opening and closing mechanism, casting can be performed as usual.

【0007】[0007]

【実施例】以下、図1、図2を参照して本発明の一実施
例を説明する。図1は、本実施例に係る離型剤塗布装置
を装備したダイカストマシンの要部断面図である。前記
ダイカストマシン100は、固定プラテン106に装着
された固定金型102と、可動プラテン108に装着さ
れた可動金型104を備えている。そして前記可動プラ
テン108が移動することにより前記可動金型104が
固定金型102に当接して、図1(A)に示されるよう
に、型締めが行われる。そしてこの状態で、金型10
2,104の内部には製品を成形するキャビティ110
が形成される。前記固定金型102および固定プラテン
106には、溶湯を蓄える加熱炉(図示されていない)
から給湯管114を介して供給された溶湯を、前記キャ
ビティ110に導くプランジャースリーブ112sが形
成されている。前記プランジャースリーブ112sは、
キャビティ110の下方において水平に形成されてお
り、その内部には円柱状のプランジャーチップ112t
が軸心方向に摺動可能に収納されている。さらに前記プ
ランジャーチップ112tは、プランジャーロッド11
2rによって駆動装置(図示されていない)に連結され
ており、前記駆動装置が作動されることにより、そのプ
ランジャーチップ112tはプランジャースリーブ11
2sの内部を給湯管114の開口位置から前方(図中右
方向)に移動して、溶湯をキャビティ110内に送り込
めるようになっている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view of an essential part of a die casting machine equipped with a release agent coating device according to this embodiment. The die casting machine 100 includes a fixed mold 102 mounted on a fixed platen 106 and a movable mold 104 mounted on a movable platen 108. When the movable platen 108 moves, the movable mold 104 comes into contact with the fixed mold 102, and the mold is clamped as shown in FIG. And in this state, the mold 10
A cavity 110 for molding a product is provided inside the 2, 104.
Is formed. A heating furnace (not shown) for storing molten metal is provided in the fixed mold 102 and the fixed platen 106.
A plunger sleeve 112s for guiding the molten metal supplied from the above through the hot water supply pipe 114 to the cavity 110 is formed. The plunger sleeve 112s is
It is formed horizontally below the cavity 110 and has a cylindrical plunger tip 112t inside.
Are stored so as to be slidable in the axial direction. Further, the plunger tip 112t includes the plunger rod 11
2r is connected to a driving device (not shown), and when the driving device is operated, the plunger tip 112t of the plunger sleeve 112t is locked.
The inside of 2 s is moved forward from the opening position of the hot water supply pipe 114 (to the right in the drawing) so that the molten metal can be fed into the cavity 110.

【0008】前記固定金型102には、前記プランジャ
ースリーブ112sの下方に前記キャビティ110と連
通する離型剤通路116が縦方向に形成されており、こ
の離型剤通路116の下端が固定金型102の外部で開
口している。さらに前記離型剤通路116の途中には、
離型剤シャットオフピン118pが装着されている。離
型剤シャットオフピン118pは、図1(B)に示され
るように、シリンダ118sによって駆動される円柱状
のピンであり、シリンダ118sから所定量延出した状
態で前記離型剤通路116を閉鎖する。即ち、上記した
離型剤シャットオフピン118pが、離型剤通路116
を開閉する離型剤通路開閉機構として機能する。前記離
型剤通路116の下端には、固定金型102の外側から
離型剤供給回収装置120が接続されている。前記離型
剤供給回収装置120は、液状の離型剤を所定圧力〔5
〜10Kg/cm2(大気圧=0 Kg/cm2)〕でキャビティ110
に圧送する離型剤供給系122と、前記キャビティ11
0から戻された離型剤を回収する離型剤回収系124と
を備えている。そして前記離型剤供給系122および離
型剤回収系124が切り換え弁128、離型剤供給配管
126を介して固定金型102の離型剤通路116に接
続されている。
A mold release agent passage 116 communicating with the cavity 110 is formed vertically in the fixed mold 102 below the plunger sleeve 112s, and the lower end of the mold release agent passage 116 is fixed metal. It is opened outside the mold 102. Further, in the middle of the release agent passage 116,
A release agent shutoff pin 118p is attached. As shown in FIG. 1B, the release agent shutoff pin 118p is a columnar pin driven by a cylinder 118s, and extends through the release agent passage 116 by a predetermined amount from the release agent passage 116. Close. That is, the release agent shut-off pin 118p described above functions as the release agent passage 116.
It functions as a release agent passage opening / closing mechanism for opening and closing. A release agent supply / recovery device 120 is connected to the lower end of the release agent passage 116 from the outside of the fixed mold 102. The release agent supply / recovery device 120 applies a liquid release agent at a predetermined pressure [5
~ 10Kg / cm 2 (atmospheric pressure = 0 Kg / cm 2 )] with cavity 110
Release agent supply system 122 for pressure feeding to the cavity 11 and the cavity 11
And a release agent recovery system 124 for recovering the release agent returned from 0. The release agent supply system 122 and the release agent recovery system 124 are connected to the release agent passage 116 of the fixed mold 102 via the switching valve 128 and the release agent supply pipe 126.

【0009】前記固定金型102の上部には、キャビテ
ィ110内の気体を外部に排出するためのガス抜き通路
136が縦方向に形成されており、このガス抜き通路1
36の途中に減圧シャットオフピン138pが装着され
ている。減圧シャットオフピン138pは、シリンダ1
38sによって駆動される円柱状のピンであり、シリン
ダ118sから所定量延出した状態で前記ガス抜き通路
136を遮断する。前記ガス抜き通路136には、固定
金型102の外側から減圧配管146が接続されてい
る。ここで前記減圧配管146は、キャビティ110お
よびガス抜き通路136内の気体を減圧装置144に導
くための配管であり、その途中には大気開放弁148が
設置されている。前記大気開放弁148は、前記ガス抜
き通路136と減圧装置144との間を連通状態あるい
は遮断状態に切り換える電磁弁であり、この大気開放弁
148が遮断状態に切り換えられた状態で、前記ガス抜
き通路136の側が大気に開放される。即ち、前記大気
開放弁148が大気開放された状態におけるガス抜き通
路136および減圧配管146が大気開放通路に相当
し、減圧シャットオフピン138pおよび大気開放弁1
48が大気開放通路開閉機構として機能する。
A gas vent passage 136 for discharging the gas in the cavity 110 to the outside is vertically formed in the upper portion of the fixed mold 102. The gas vent passage 1
A decompression shut-off pin 138p is attached midway through 36. The decompression shutoff pin 138p is for the cylinder 1
It is a columnar pin driven by 38s, and shuts off the gas vent passage 136 in a state of extending a predetermined amount from the cylinder 118s. A decompression pipe 146 is connected to the gas vent passage 136 from the outside of the fixed mold 102. Here, the decompression pipe 146 is a pipe for guiding the gas in the cavity 110 and the gas vent passage 136 to the decompression device 144, and an air release valve 148 is installed in the middle thereof. The atmosphere release valve 148 is a solenoid valve that switches between the gas vent passage 136 and the decompression device 144 into a communication state or a cutoff state. The side of the passage 136 is open to the atmosphere. That is, the degassing passage 136 and the pressure reducing pipe 146 in the state where the atmosphere opening valve 148 is opened to the atmosphere correspond to the atmosphere opening passage, and the decompression shutoff pin 138p and the atmosphere opening valve 1 are provided.
48 functions as an opening / closing mechanism for the atmosphere opening passage.

【0010】次に、図2(A)〜(D)を参照して、本
実施例に係る離型剤塗布装置の機能を説明する。鋳造が
終了して製品が取り出されると、先ず、金型102,1
04の型締めが行われる。この時、プランジャーチップ
112tは前進端よりも約50mm程度後退して、キャビテ
ィ110と離型剤通路116とは連通状態に保持され
る。また、前記ガス抜き通路136と減圧装置144と
の間は大気開放弁148によって遮断状態に保持され
て、前記ガス抜き通路136は大気に開放される。次
に、シリンダ138sが作動して減圧シャットオフピン
138pがシリンダ138s内に収納され、ガス抜き通
路136が開かれる。これによって、キャビティ110
内が大気に開放される。また、シリンダ118sが作動
して離型剤シャットオフピン118pがシリンダ118
s内に収納され、離型剤通路116が開かれる。さら
に、離型剤供給回収装置120の切り換え弁128が作
動して、離型剤供給系122が離型剤通路116と連通
する。そしてこの状態で離型剤供給系122が駆動され
て、液状の離型剤が約 5〜10Kg/cm2の圧力で、切り換え
弁128、離型剤通路116を通ってキャビティ110
内に圧送される。この時、キャビティ110内の空気
は、離型剤によって下方から押されて上部のガス抜き通
路136、減圧配管146を通って大気開放弁148か
ら効率的に外部に排出される。この状態が図2(A)に
示されている。
Next, with reference to FIGS. 2A to 2D, the function of the release agent coating apparatus according to this embodiment will be described. When the casting is completed and the product is taken out, first, the molds 102, 1
04 mold clamping is performed. At this time, the plunger tip 112t retracts from the forward end by about 50 mm, and the cavity 110 and the release agent passage 116 are held in a communicating state. The atmosphere vent valve 148 holds the gas vent passage 136 and the pressure reducing device 144 in a closed state, so that the gas vent passage 136 is opened to the atmosphere. Next, the cylinder 138s is operated, the decompression shutoff pin 138p is housed in the cylinder 138s, and the degassing passage 136 is opened. This allows the cavity 110
The inside is open to the atmosphere. In addition, the cylinder 118s is operated so that the release agent shutoff pin 118p is moved to the cylinder 118.
and the release agent passage 116 is opened. Further, the switching valve 128 of the release agent supply / recovery device 120 is operated so that the release agent supply system 122 communicates with the release agent passage 116. Then, the release agent supply system 122 is driven in this state, and the liquid release agent is supplied to the cavity 110 through the switching valve 128 and the release agent passage 116 at a pressure of about 5 to 10 kg / cm 2.
It is pumped in. At this time, the air in the cavity 110 is pushed from below by the release agent, passes through the upper gas vent passage 136 and the pressure reducing pipe 146, and is efficiently discharged to the outside from the atmosphere release valve 148. This state is shown in FIG.

【0011】なお、前記キャビティ110内が離型剤に
よって満たされるタイミングで、前記減圧シャットオフ
ピン138pがシリンダ138sから所定量延出され
て、前記ガス抜き通路136が閉じられる。これによっ
て離型剤供給系122からキャビティ110内に供給さ
れた離型剤が金型102,104から溢れ出ることがな
くなる。次に、離型剤供給回収装置120の切り換え弁
128が作動して、離型剤回収系124が離型剤通路1
16と連通する。これによって離型剤に加えられていた
圧送圧力が解除される。さらに減圧シャットオフピン1
38pがシリンダ138s内に収納されてガス抜き通路
136が開かれる。これによってキャビティ110内に
満たされた離型剤は自重によって自然に前記キャビティ
110、離型剤通路116から流出して離型剤回収系1
24に戻される。この状態が図2(B)に示されてい
る。前記キャビティ110内の離型剤が完全に離型剤回
収系124に回収されると、図2(C)に示されるよう
に、前記離型剤シャットオフピン118pがシリンダ1
18sから延出されて、離型剤通路116が閉じられ
る。さらに、大気開放弁148が切り換えられて、前記
ガス抜き通路136と減圧装置144との間が連通状態
に保持される。そして、この状態で減圧装置144が駆
動されてキャビティ110内の減圧が行われる。キャビ
ティ110内が減圧されることにより、キャビティ11
0内の飽和蒸気圧が低下して水分が蒸発し、キャビティ
110の内壁面に塗布された離型剤の乾燥が効率的に行
われる。
The depressurization shutoff pin 138p is extended from the cylinder 138s by a predetermined amount at the timing when the cavity 110 is filled with the release agent, and the gas vent passage 136 is closed. This prevents the release agent supplied from the release agent supply system 122 into the cavity 110 from overflowing the molds 102 and 104. Next, the switching valve 128 of the release agent supply / recovery device 120 operates, and the release agent recovery system 124 causes the release agent passage 1 to operate.
Communicate with 16. As a result, the pumping pressure applied to the release agent is released. Further decompression shut-off pin 1
38p is accommodated in the cylinder 138s, and the gas vent passage 136 is opened. As a result, the release agent filled in the cavity 110 naturally flows out from the cavity 110 and the release agent passage 116 by its own weight, and the release agent recovery system 1
Returned to 24. This state is shown in FIG. When the release agent in the cavity 110 is completely recovered by the release agent recovery system 124, the release agent shutoff pin 118p moves to the cylinder 1 as shown in FIG. 2 (C).
Extending from 18s, the release agent passage 116 is closed. Further, the atmosphere release valve 148 is switched to maintain the communication between the gas vent passage 136 and the pressure reducing device 144. Then, in this state, the decompression device 144 is driven to decompress the inside of the cavity 110. By reducing the pressure in the cavity 110, the cavity 11
The saturated vapor pressure in 0 decreases to evaporate water, and the release agent applied to the inner wall surface of the cavity 110 is efficiently dried.

【0012】離型剤の乾燥が完了すると、キャビティ1
10内が減圧状態に保持されたままで、図2(D)に示
されるように、前記プランジャーチップ112tが給湯
管114の後方まで移動する。これによって溶湯が給湯
管114、プランジャースリーブ112sを通ってキャ
ビティ110内に吸引される。さらにプランジャーチッ
プ112tが駆動装置によって前方に移動されることに
よってキャビティ110内に溶湯が充填されて、鋳造が
行われる。このように本実施例によると、キャビティ1
10の内部に液状の離型剤を満たした後、この離型剤を
自重によってキャビティ110から自然流出させる方法
を採用しているために、キャビティ110の内壁面に離
型剤がむらなく均等に塗布される。さらに、必要部分に
のみ離型剤が塗布されるために経済的である。そして、
金型102,104の見切り面に離型剤が付着すること
もないために、ガスベント詰まり等のトラブルが生じる
こともない。また、キャビティ110には製品の厚肉部
に相当する部位に多くの離型剤が供給され、また製品の
薄肉部に相当する部位に少ない離型剤が供給される。こ
のため、金型102,104の温度に応じた最適冷却が
可能になる。さらに、離型剤を空気で吹き付ける必要が
ないために、離型剤の飛散や騒音の発生がなく、作業環
境が向上する。
When the release agent is completely dried, the cavity 1
2D, the plunger tip 112t moves to the rear of the hot water supply pipe 114 while the inside of the container 10 is kept in a reduced pressure state. As a result, the molten metal is sucked into the cavity 110 through the hot water supply pipe 114 and the plunger sleeve 112s. Further, the plunger tip 112t is moved forward by the driving device, so that the molten metal is filled in the cavity 110 and casting is performed. Thus, according to this embodiment, the cavity 1
Since a method in which the inside of 10 is filled with a liquid release agent and the release agent spontaneously flows out from the cavity 110 by its own weight, the release agent is evenly and evenly distributed on the inner wall surface of the cavity 110. Is applied. Further, it is economical because the release agent is applied only to the necessary portion. And
Since the release agent does not adhere to the parting surfaces of the molds 102 and 104, troubles such as gas vent clogging do not occur. Further, in the cavity 110, a large amount of release agent is supplied to a portion corresponding to the thick portion of the product, and a small amount of release agent is supplied to a portion corresponding to the thin portion of the product. Therefore, optimal cooling according to the temperatures of the molds 102 and 104 becomes possible. Further, since it is not necessary to blow the release agent with air, the release agent is not scattered and noise is generated, and the working environment is improved.

【0013】[0013]

【発明の効果】本発明によると、キャビティの内部に液
状の離型剤を満たした後、この離型剤を自重によってキ
ャビティから自然流出させる方法を採用しているため
に、キャビティの内壁面に離型剤がむらなく均等に塗布
される。このために金型から製品をスムーズに取り出す
ことができ、製品不良や金型の損傷が防止される。
According to the present invention, since the inside of the cavity is filled with a liquid mold release agent, the mold release agent is allowed to spontaneously flow out of the cavity by its own weight. The release agent is evenly and evenly applied. Therefore, the product can be smoothly taken out from the mold, and defective products and damage to the mold can be prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例に係る離型剤塗布装置を装備
したダイカストマシンの要部断面図である。
FIG. 1 is a cross-sectional view of essential parts of a die casting machine equipped with a release agent coating device according to an embodiment of the present invention.

【図2】本実施例に係る離型剤塗布装置の機能を表す要
部断面図である。
FIG. 2 is a cross-sectional view of a main part showing the function of the release agent coating device according to the present embodiment.

【図3】従来の離型剤塗布装置を表す要部断面図であ
る。
FIG. 3 is a cross-sectional view of a main part of a conventional release agent coating device.

【符号の説明】[Explanation of symbols]

102 固定金型 104 可動金型 110 キャビティ 116 離型剤通路 118p 離型剤シャットオフピン(離型剤通路開閉機
構) 118s シリンダ(離型剤通路開閉機構) 120 離型剤供給回収装置 136 ガス抜き通路(大気開放通路) 138p 減圧シャットオフピン(大気開放通路開閉機
構) 138s シリンダ(大気開放通路開閉機構) 146 減圧配管(大気開放通路) 148 大気開放弁(大気開放通路開閉機構)
102 Fixed mold 104 Movable mold 110 Cavity 116 Release agent passage 118p Release agent shutoff pin (release agent passage opening / closing mechanism) 118s Cylinder (release agent passage opening / closing mechanism) 120 Release agent supply / recovery device 136 Degassing Passage (atmosphere opening passage) 138p Pressure reducing shut-off pin (atmosphere opening passage opening / closing mechanism) 138s Cylinder (atmosphere opening passage opening / closing mechanism) 146 Pressure reducing pipe (atmosphere opening passage) 148 Atmosphere opening valve (atmosphere opening passage opening / closing mechanism)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 金型の内部に縦方向に形成された通路で
あり、その上端がキャビティの下部に接続され、下端が
金型の外部で開口する離型剤通路と、 前記離型剤通路を開閉する離型剤通路開閉機構と、 前記離型剤通路の下端に接続されており、液状の離型剤
を所定圧力で圧送し、さらに前記離型剤の圧送後にその
離型剤の圧送圧力を解除して、前記離型剤通路から自然
流出する離型剤を回収する離型剤供給回収機構と、 金型内に形成された通路であり、その一端が前記キャビ
ティの上部に接続され、他端が前記金型の外部で開口す
る大気開放通路と、 前記大気開放通路を開閉する大気開放通路開閉機構と、
を有することを特徴とする離型剤塗布装置。
1. A mold release agent passage, which is a passage formed in the mold in a vertical direction, the upper end of which is connected to the lower part of the cavity and the lower end of which is opened outside the mold, and the mold release agent passage. And a release agent passage opening / closing mechanism for opening and closing the release agent passage, which is connected to the lower end of the release agent passage to pressure-feed a liquid release agent at a predetermined pressure, and further pressure-feeds the release agent after pressure-feeding the release agent. A release agent supply / recovery mechanism that releases the pressure and recovers the release agent that naturally flows out from the release agent passage, and a passage formed in the mold, one end of which is connected to the upper portion of the cavity. An atmosphere opening passage whose other end opens outside the mold, and an atmosphere opening passage opening / closing mechanism that opens and closes the atmosphere opening passage,
A release agent coating device comprising:
JP35331892A 1992-12-11 1992-12-11 Releasing agent coating device Pending JPH06179046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35331892A JPH06179046A (en) 1992-12-11 1992-12-11 Releasing agent coating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35331892A JPH06179046A (en) 1992-12-11 1992-12-11 Releasing agent coating device

Publications (1)

Publication Number Publication Date
JPH06179046A true JPH06179046A (en) 1994-06-28

Family

ID=18430038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35331892A Pending JPH06179046A (en) 1992-12-11 1992-12-11 Releasing agent coating device

Country Status (1)

Country Link
JP (1) JPH06179046A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842510A (en) * 1996-04-12 1998-12-01 Keihin Corporation Application method of powder state mold lubricant to die-casting mold and die-casting apparatus
US5842509A (en) * 1996-04-12 1998-12-01 Keihin Corporation Application method of powder mold lubricant to vacuum die-casting mold and vacuum die-casting apparatus
JP2002361644A (en) * 2001-06-07 2002-12-18 Seiwa Electric Mfg Co Ltd Method for treating surface of molding die and device for treating surface of molding die
JP2007237254A (en) * 2006-03-09 2007-09-20 Aisin Seiki Co Ltd Apparatus for feeding releasing agent
JP2009066653A (en) * 2007-09-18 2009-04-02 Aisin Seiki Co Ltd Molding device, and method for sticking mold release agent
CN116160627A (en) * 2023-04-20 2023-05-26 汕头市澄海区开益玩具有限公司 Injection molding die

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842510A (en) * 1996-04-12 1998-12-01 Keihin Corporation Application method of powder state mold lubricant to die-casting mold and die-casting apparatus
US5842509A (en) * 1996-04-12 1998-12-01 Keihin Corporation Application method of powder mold lubricant to vacuum die-casting mold and vacuum die-casting apparatus
JP2002361644A (en) * 2001-06-07 2002-12-18 Seiwa Electric Mfg Co Ltd Method for treating surface of molding die and device for treating surface of molding die
JP2007237254A (en) * 2006-03-09 2007-09-20 Aisin Seiki Co Ltd Apparatus for feeding releasing agent
JP2009066653A (en) * 2007-09-18 2009-04-02 Aisin Seiki Co Ltd Molding device, and method for sticking mold release agent
CN116160627A (en) * 2023-04-20 2023-05-26 汕头市澄海区开益玩具有限公司 Injection molding die

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