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JPS614628A - Impregnation method and its device - Google Patents

Impregnation method and its device

Info

Publication number
JPS614628A
JPS614628A JP12484684A JP12484684A JPS614628A JP S614628 A JPS614628 A JP S614628A JP 12484684 A JP12484684 A JP 12484684A JP 12484684 A JP12484684 A JP 12484684A JP S614628 A JPS614628 A JP S614628A
Authority
JP
Japan
Prior art keywords
tank
impregnation
impregnating
storage tank
pressure
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
JP12484684A
Other languages
Japanese (ja)
Inventor
Akiyoshi Morita
章義 森田
Tamio Hayasaka
早坂 民雄
Mitsuyoshi Sato
三由 佐藤
Takayuki Kojima
小嶋 孝行
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 JP12484684A priority Critical patent/JPS614628A/en
Publication of JPS614628A publication Critical patent/JPS614628A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00Restoring or reconditioning objects
    • B23P6/04Repairing fractures or cracked metal parts or products, e.g. castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002Cleaning, working on castings
    • B22D31/005Sealing or impregnating porous castings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

PURPOSE:To improve a rate of attainment in performance of impregnation by a device, by constituting the device such that the pressure in a storage tank is reduced so as to remove air in impregnation fluid immediately before it is moved from the storage tank to an impregnation tank, in the case of the impregnation device of moving fluid type having the storage and the impregnation tank. CONSTITUTION:When an impregnation means, for filling blowholes of a cast article with impregnation fluid of organic system material like acrylic resin, performs an impregnation process, an impregnation tank 1, first being charged with materials 7 to be impregnated being set in a pallet 6, is enclosed. Next the pressure in a storage tank 2 is reduced by operating a vacuum pump 23 for removing a part of air and water contained in impregnation fluid 4 in the storage tank 2. While the pressure in the tank 1 is reduced, for removing air in the blowhole of the material 7 to be impregnated being placed in the tank 1, almost simultaneously with the timing of reducing the pressure in the tank 2. And after the pressure is reduced, the blowhole of the material 7 to be impregnated is charged with the impregnation fluid 4 by moving it through a difference pressure. In this way, a rate of attainment in performance of impregnation can be improved.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、鋳造品の鋳巣にアクリル系樹脂等の有機系材
料の含浸液を充填させるための含浸方法およびその装置
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an impregnation method and apparatus for filling a blowhole of a cast product with an impregnation liquid of an organic material such as an acrylic resin.

(従来の技術) 従来、ダイカスト等の鋳造品の圧洩れ防止を目的として
充填材にケイ酸ソーダ等の材料が使われていたが、近年
、含浸性能が優れているアクリル樹脂等の有機系材料が
広く使われるようになってきた。有機系材料を使用した
含浸方法としては、含浸槽と貯槽を設け、含浸液を貯槽
内に入れた状態で含浸槽内に被含浸材を投入して鋳巣内
の空気を減圧し除去した後、貯槽内の液を配管を通して
含浸槽内へ差圧で移動させ鋳巣内へ含浸充填させる方法
が最も一般的で装置も安価である。
(Conventional technology) In the past, materials such as sodium silicate were used as fillers to prevent leakage in die-casting and other cast products, but in recent years, organic materials such as acrylic resin, which have excellent impregnating properties, have been used as fillers. has become widely used. The impregnation method using organic materials involves setting up an impregnating tank and a storage tank, placing the impregnating liquid into the tank, putting the material to be impregnated into the tank, depressurizing the air inside the blowhole, and removing it. The most common method is to move the liquid in the storage tank through piping into the impregnation tank using a differential pressure to impregnate and fill the cavity, and the equipment is inexpensive.

(発明が解決しようとする問題点) しかしながら、上記方法では充分な含浸性能を得ること
は岬しく達成率は80〜90%程度である。この原因は
貯槽が大気圧のため含浸液中の空気が除去できずに含浸
槽へ空気も同時に液移動する。したがって、含浸液中の
空気が鋳巣内へ侵入してしまうからである。
(Problems to be Solved by the Invention) However, with the above method, it is difficult to obtain sufficient impregnating performance, and the achievement rate is about 80 to 90%. The reason for this is that the air in the impregnating liquid cannot be removed because the storage tank is at atmospheric pressure, and the air also moves into the impregnating tank at the same time. Therefore, air in the impregnating liquid will enter the cavity.

微量でも鋳巣内に空気が侵入すると、充填した含浸材を
40℃〜100℃の温度で硬化させる工程で、空気が熱
膨彊し含浸材にクラックが生じ含浸性能を極端に悪くす
る。従来、この対策方法として被含浸材の含浸槽への浸
漬時間の延長や、減圧槽内に被含浸材と貯槽を各々設置
できるようにして減圧後浸漬できる装置の・製作が試ら
れできたが、前者では完全に対策できず、後者では装置
が複雑になシ、コスト高であシ、また、トラブルも絶え
ないなど、問題となっている。
If even a small amount of air enters the cavity, the air expands thermally during the process of curing the filled impregnating material at a temperature of 40° C. to 100° C., causing cracks in the impregnating material, which extremely deteriorates the impregnating performance. In the past, attempts have been made to counter this problem by extending the immersion time of the material to be impregnated in the impregnating tank, or by creating a device that allows the material to be impregnated and a storage tank to be placed in a decompression tank so that the material can be immersed after depressurization. However, the former is not a complete countermeasure, while the latter requires complicated equipment, high costs, and constant troubles.

(問題点を解決するための手段) 上記問題点を解決するため、本発明の手段は、含浸槽と
貯槽を設け、含浸液を貯槽内に入れた状態で含浸槽内に
被含浸材を投入して鋳巣内の空気を減圧し除去した後、
貯槽内の液を配管を通して含浸槽内へ差圧で移動させ鋳
巣内へ含浸充填させる含浸方法において、貯槽より含浸
槽に液移動させる直前に貯槽内を減圧し含浸液中の空気
を除去することを特徴としている。また、液移動用弁を
中途に有する液移動用配管を介して連結された含浸槽お
よび貯槽と、減圧入切シ用弁および大気開放弁を有する
配管を介して前記含浸槽および貯槽に連結して該含浸槽
および貯槽を減圧する真空ポンプとからなることを特徴
としている。
(Means for Solving the Problems) In order to solve the above problems, the means of the present invention provides an impregnating tank and a storage tank, and inserts the material to be impregnated into the impregnating tank with the impregnating liquid in the storage tank. After depressurizing and removing the air inside the blowhole,
In the impregnation method in which the liquid in the storage tank is transferred through piping into the impregnation tank using differential pressure and filled with impregnation into the casting cavity, the pressure inside the storage tank is reduced immediately before the liquid is transferred from the storage tank to the impregnation tank to remove air in the impregnating liquid. It is characterized by In addition, the impregnation tank and the storage tank are connected to each other via a liquid transfer pipe having a liquid transfer valve in the middle, and the impregnation tank and the storage tank are connected to the impregnation tank and the storage tank via a pipe having a reduced pressure on/off valve and an atmosphere release valve. It is characterized by comprising a vacuum pump that reduces the pressure of the impregnation tank and storage tank.

(作 用) 上記方法および装置により、空気を含まない含浸液を含
浸槽に供給し、被含浸材の空気のない鋳巣内に該含浸液
を充填させるようにしたものである。
(Function) According to the method and apparatus described above, an air-free impregnating liquid is supplied to the impregnating tank, and the air-free casting cavity of the material to be impregnated is filled with the impregnating liquid.

(実施例) 以下、本発明の一実施例を図に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

含浸槽1は、中途に液移動用電磁弁12を有する液移動
用配管3を介して貯槽2と連通している。貯槽2には嫌
気性含浸液4が予め収容されており、該含浸液4が含浸
槽1へ移動した秋材7が収容されている。貯槽2には、
含浸液4をエアーバブリング9をするためのエアーコン
プレッサ8と、含浸液4を冷却するための冷却器ヘッド
11を有する冷却器10が備えられている。これは、嫌
気性含浸液4の特徴として、常時、液をエアーバブリン
グおよび冷却しておかないと重合固化してしまうからで
ある。ただし、30分以下程度の短時間であればその限
りでない。含浸槽1および貯槽2には、それぞれ減圧用
配管18.13が設けられている。該配管18.13に
は、それぞれ減圧度をコントロールするためのプレッシ
ャスイッチ19.14が取付けられている。ここで、こ
のプレッシャスイッチ19.14の位置は図の様に含浸
槽より高い位置にセットしなければ液移動時に液が侵入
し破損する。また、配管18.13には、それぞれ大気
開放弁20.15および減圧入切シ用電磁弁22.17
が取付けられている。減圧用配管18゜16の管端には
、含浸槽1、貯槽2内をそれぞれ減圧するための真空ポ
ンプ23が接続されている。なお、図において、21.
16は大気開放口、24は液面計をそれぞれ示している
The impregnation tank 1 communicates with the storage tank 2 via a liquid transfer pipe 3 having a liquid transfer electromagnetic valve 12 in the middle. An anaerobic impregnating liquid 4 is stored in the storage tank 2 in advance, and autumn wood 7 into which the impregnating liquid 4 has been transferred to the impregnating tank 1 is stored. In storage tank 2,
An air compressor 8 for performing air bubbling 9 on the impregnating liquid 4 and a cooler 10 having a cooler head 11 for cooling the impregnating liquid 4 are provided. This is because, as a characteristic of the anaerobic impregnating liquid 4, if the liquid is not constantly cooled by air bubbling, it will polymerize and solidify. However, this does not apply if it is a short time of about 30 minutes or less. Impregnation tank 1 and storage tank 2 are each provided with pressure reduction piping 18,13. A pressure switch 19.14 for controlling the degree of pressure reduction is attached to each of the pipes 18.13. Here, the pressure switches 19 and 14 must be set at a position higher than the impregnating tank as shown in the figure, otherwise the liquid will enter during liquid movement and cause damage. In addition, the pipes 18 and 13 are provided with an atmosphere release valve 20.15 and a depressurization on/off solenoid valve 22.17, respectively.
is installed. A vacuum pump 23 for reducing the pressure inside the impregnation tank 1 and the storage tank 2 is connected to the ends of the pressure reduction pipes 18 and 16, respectively. In addition, in the figure, 21.
Reference numeral 16 indicates an air opening, and reference numeral 24 indicates a liquid level gauge.

以上述べた装置を用いて本考案の含浸処理をする場合、
まず含浸槽1内にパレット6の中にセットされた被含浸
材7を投入し含浸槽1を密閉する。次に、貯槽2内にあ
る含浸液4中の空気や水分を除去するために真空ポンプ
23を作動させると同時にエアーコンプレッサ8を停止
し、減圧入切り用電磁弁17を開、大気開放弁15を閉
とし貯槽2内を減圧する。貯槽2内の減圧度が30トー
ル(Torr)以下(水の蒸気圧以上)になったらプレ
ッシャスイッチ14で検知して電磁弁17を閉じ、大気
開放弁15を開とし貯W42内を大気開放する。また、
貯槽2内の減圧時期とほぼ同時に含浸@1内にある被含
浸材7中の鋳巣内の空気を除去するために減圧入切り用
電磁弁22を開に、大気開放弁20を閉とし、含浸槽1
内を減圧する。含浸槽1内の減圧度が30トール以下と
なったら、それをプレンシャスイッチ19で検知し、し
かも、貯槽2内の大気開放が終了していた場合、液移動
用電磁弁12を開とし差圧で液面計24に触れるまで液
移動させ被含浸材7の鋳巣内に含浸液4を充填する。次
に、所定の時間充填後、真空ポンプ23を停止し電磁弁
22を閉に大気開放弁20を開にして含浸槽1内を大気
開放すると同時に電磁弁12を開とし含浸液4の自重で
貯槽2へ液を戻す。その後、貯槽2内のエアーバブリン
グを開始するためのエアーコンプレッサ8を作動させる
When performing the impregnation treatment of the present invention using the apparatus described above,
First, the material to be impregnated 7 set in the pallet 6 is put into the impregnating tank 1, and the impregnating tank 1 is sealed. Next, in order to remove air and moisture from the impregnating liquid 4 in the storage tank 2, the vacuum pump 23 is activated, the air compressor 8 is stopped at the same time, the depressurization on/off solenoid valve 17 is opened, and the atmosphere release valve 15 is activated. is closed and the pressure inside the storage tank 2 is reduced. When the degree of pressure reduction in the storage tank 2 becomes 30 Torr or less (more than the vapor pressure of water), it is detected by the pressure switch 14, the solenoid valve 17 is closed, and the atmosphere release valve 15 is opened to open the storage W42 to the atmosphere. . Also,
At almost the same time as the time for depressurization in the storage tank 2, the solenoid valve 22 for depressurization on/off is opened and the atmospheric release valve 20 is closed in order to remove the air in the cavity in the material to be impregnated 7 in the impregnated @1. Impregnation tank 1
Reduce the pressure inside. When the degree of pressure reduction in the impregnating tank 1 becomes 30 torr or less, this is detected by the pressure switch 19, and if the storage tank 2 has already been released to the atmosphere, the liquid transfer solenoid valve 12 is opened and the pressure switch 19 is activated. The impregnating liquid 4 is filled into the cavity of the impregnated material 7 by moving the liquid under pressure until it touches the liquid level gauge 24. Next, after filling for a predetermined time, the vacuum pump 23 is stopped, the solenoid valve 22 is closed, and the atmosphere release valve 20 is opened to release the inside of the impregnation tank 1 to the atmosphere. Return the liquid to storage tank 2. Thereafter, the air compressor 8 for starting air bubbling in the storage tank 2 is activated.

以上のような方法および装置で処理した被含浸材の含浸
性能の達成′率は99チ以上であシ、種々の耐久評価に
も合格した。
The achievement rate of impregnation performance of the impregnated material treated with the above method and apparatus was 99 degrees or more, and it passed various durability evaluations.

(発明の効果) 以上述べた如く、第1番目の発明によれば、貯槽と含浸
槽を有する液移動形式の含浸方法において、貯槽より含
浸槽に液移動させる直前に、貯槽内を減圧し含浸液中の
空気を除去するようにしたので、従来、含浸性能の達成
率が80〜90%が限度であったものが99%以上にな
った。また、従来方法で処理して圧洩れが防止できたも
のの中にかなシの割合で鋳巣内にエアーが侵入しており
、耐久性に難があったがこれも解決した。また、従来、
含浸液中への水分混入防止のために被含浸材の予備乾燥
を行なっていたが、本発明方法では10ツト毎に水分が
除去されるため予備乾燥が不要になった。などの効果が
得られる。
(Effects of the Invention) As described above, according to the first invention, in a liquid transfer type impregnation method having a storage tank and an impregnation tank, the pressure inside the storage tank is reduced immediately before the liquid is transferred from the storage tank to the impregnation tank. Since the air in the liquid is removed, the impregnation performance achievement rate, which was previously limited to 80-90%, has increased to over 99%. In addition, even though pressure leakage could be prevented using conventional methods, air still entered the cavity at a high rate, which caused problems with durability, but this problem has also been resolved. Also, conventionally,
In order to prevent water from entering the impregnating solution, the material to be impregnated was pre-dried, but in the method of the present invention, water is removed every 10 drops, so pre-drying is no longer necessary. Effects such as this can be obtained.

また、第2番目の発明によれば、貯槽および含浸槽を、
減圧入切シ用弁および大気開放弁を有する配管を介して
真空ポンプに連結したので、上記効果を奏する含浸方法
を確実に実施でき、また、従来装置を若干改造するだけ
でよく、さらには、液中に空気が多量にあった場合、液
移動するときに気泡となり、真空配管内に液を吸引して
しまい、電磁弁類を破損する不具合が生じるが、本発明
装置では全くそれがない、などの効果が得られる。
Further, according to the second invention, the storage tank and the impregnating tank are
Since it is connected to a vacuum pump via piping that has a reduced pressure on/off valve and an atmosphere release valve, the impregnation method that achieves the above effects can be reliably carried out, and the conventional equipment only needs to be slightly modified, and furthermore, If there is a large amount of air in the liquid, it will form bubbles when the liquid moves, and the liquid will be sucked into the vacuum piping, causing damage to the solenoid valves, but the device of the present invention does not have this problem at all. Effects such as this can be obtained.

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

図は本発明の詳細な説明図である。 1・・・含浸槽、2・・・貯槽、6・・・液移動用配管
、4・・・含浸液、7・・・被含浸材、12・・・液移
動用電磁弁、13.18・・・配管、15.20・・・
大気開放弁、17.’22・・・減圧入切り用電磁弁、
25・・・真空ポンプ。
The figure is a detailed explanatory diagram of the present invention. DESCRIPTION OF SYMBOLS 1... Impregnation tank, 2... Storage tank, 6... Piping for liquid transfer, 4... Impregnation liquid, 7... Material to be impregnated, 12... Solenoid valve for liquid transfer, 13.18 ...Piping, 15.20...
Atmospheric release valve, 17. '22...Solenoid valve for reducing pressure on/off,
25...Vacuum pump.

Claims (2)

【特許請求の範囲】[Claims] (1)含浸槽と貯槽を設け、含浸液を貯槽内に入れた状
態で含浸槽内に被含浸材を投入して鋳巣内の空気を減圧
し除去した後、貯槽内の液を配管を通して含浸槽内へ差
圧で移動させ鋳巣内へ含浸充填させる含浸方法において
、貯槽より含浸槽に液移動させる直前に貯槽内を減圧し
含浸液中の空気を除去することを特徴とする含浸方法。
(1) An impregnating tank and a storage tank are installed, and with the impregnating liquid in the tank, the material to be impregnated is put into the impregnating tank, the air inside the cast cavity is depressurized and removed, and then the liquid in the storage tank is passed through piping. An impregnation method in which the impregnating liquid is moved into an impregnating tank using a differential pressure to fill the blowhole with impregnation, and the impregnating method is characterized by reducing the pressure in the storage tank and removing air in the impregnating liquid immediately before transferring the liquid from the storage tank to the impregnating tank. .
(2)液移動用弁を中途に有する液移動用配管を介して
連結された含浸槽および貯槽と、減圧入切り用弁および
大気開放弁を有する配管を介して前記含浸槽および貯槽
に連結して該含浸槽および貯槽を減圧する真空ポンプと
からなることを特徴とする含浸装置。
(2) An impregnating tank and a storage tank connected via a liquid transfer pipe having a liquid transfer valve in the middle, and a pipe having a vacuum on/off valve and an atmosphere release valve connected to the impregnation tank and storage tank. An impregnating device comprising: a vacuum pump for reducing the pressure of the impregnating tank and the storage tank.
JP12484684A 1984-06-18 1984-06-18 Impregnation method and its device Pending JPS614628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12484684A JPS614628A (en) 1984-06-18 1984-06-18 Impregnation method and its device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12484684A JPS614628A (en) 1984-06-18 1984-06-18 Impregnation method and its device

Publications (1)

Publication Number Publication Date
JPS614628A true JPS614628A (en) 1986-01-10

Family

ID=14895542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12484684A Pending JPS614628A (en) 1984-06-18 1984-06-18 Impregnation method and its device

Country Status (1)

Country Link
JP (1) JPS614628A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100410739B1 (en) * 2001-09-03 2003-12-18 현대자동차주식회사 Basket structure for impregnation
CN104999055A (en) * 2015-08-11 2015-10-28 重庆长安汽车股份有限公司 Vacuum pressure impregnation mist device with recovery function and using method
WO2017197274A1 (en) 2016-05-13 2017-11-16 Precision Planting Llc Seed trench closing sensors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100410739B1 (en) * 2001-09-03 2003-12-18 현대자동차주식회사 Basket structure for impregnation
CN104999055A (en) * 2015-08-11 2015-10-28 重庆长安汽车股份有限公司 Vacuum pressure impregnation mist device with recovery function and using method
WO2017197274A1 (en) 2016-05-13 2017-11-16 Precision Planting Llc Seed trench closing sensors

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