JP2008155548A - Vacuum hot press and its control method - Google Patents

Vacuum hot press and its control method Download PDF

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JP2008155548A
JP2008155548A JP2006348705A JP2006348705A JP2008155548A JP 2008155548 A JP2008155548 A JP 2008155548A JP 2006348705 A JP2006348705 A JP 2006348705A JP 2006348705 A JP2006348705 A JP 2006348705A JP 2008155548 A JP2008155548 A JP 2008155548A
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vacuum pump
chamber
vacuum
hot press
oil
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JP4730841B2 (en
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Kokichi Isobe
幸吉 磯部
Seiji Tanizawa
清司 谷澤
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Meiki Seisakusho KK
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Meiki Seisakusho KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum hot press and its control method which can operate efficiently a vacuum pump and to provide its control method. <P>SOLUTION: The vacuum hot press 1 for forming a laminated article by heat/press tightening a plurality of molding materials in a chamber 2 depressurized by the vacuum pump 3 is equipped with a water-oil separator 4 for separating moisture from the lubricating oil of the vacuum pump 3, and circulates the lubricating oil to the oil-water separator 4 upon driving of the vacuum pump 3. The drive of the vacuum pump 3 is selected selectively to the case of depressurizing in the chamber 2 by connecting the vacuum pump 3 with the chamber 2 and to the case of depressurizing only in the pipeline connected directly to the vacuum pump 3 by communicating with not chamber 2 by the vacuum pump 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、真空ポンプを高効率に運転する真空ホットプレスに関するものである。   The present invention relates to a vacuum hot press that operates a vacuum pump with high efficiency.

真空ホットプレスの積層成形においては、成形材料の加熱・圧締時に生ずる水分が真空ポンプに浸入しその潤滑油に混入する。その結果、真空ポンプの内部が錆びたり、ベーンが齧ったり、真空度が低下したりする。そのため、例えば特許文献１に示すような油水分離機を真空ポンプに接続して、潤滑油から水分を分離して除去する必要がある。しかしながら、特許文献１に示す油水分離機の潤滑油は、真空ポンプの駆動とは異なる別の駆動源で駆動されるポンプで循環されている。よって、コスト高になるとともに、広い設置場所を必要とする。   In the lamination molding of a vacuum hot press, moisture generated when the molding material is heated and pressed enters the vacuum pump and is mixed into the lubricating oil. As a result, the inside of the vacuum pump rusts, vanes burn, and the degree of vacuum decreases. Therefore, for example, an oil / water separator as shown in Patent Document 1 needs to be connected to a vacuum pump to separate and remove moisture from the lubricating oil. However, the lubricating oil of the oil-water separator shown in Patent Document 1 is circulated by a pump that is driven by a drive source different from that of the vacuum pump. Therefore, the cost is high and a large installation place is required.

また、油水分離機を機能させるためには、真空ポンプを回転駆動させておく必要があるところ、真空ホットプレスにおいてはその積層成形の形態上真空ポンプは間欠運転とならざるをえない。そのため、油水分離機の作動時間が制限されて十分な水分除去が行えないのである。   Further, in order to make the oil / water separator function, the vacuum pump needs to be driven to rotate, but in a vacuum hot press, the vacuum pump must be intermittently operated due to the form of lamination molding. Therefore, the operation time of the oil / water separator is limited, and sufficient water removal cannot be performed.

特開平６−１９３５６４号公報JP-A-6-193564

本発明は、上記した問題を解決すべくなされたものであって、真空ポンプを高効率に運転することのできる真空ホットプレスを提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a vacuum hot press capable of operating a vacuum pump with high efficiency.

本発明は、真空ポンプにより減圧されたチャンバ内で複数の成形材料を加熱・圧締して積層品となす真空ホットプレスは、前記真空ポンプの潤滑油から水分を分離する油水分離機を備えるとともに、前記潤滑油の前記油水分離機への循環を前記真空ポンプの駆動に伴って行うようにした真空ホットプレスに関する。   The present invention provides a vacuum hot press that heats and presses a plurality of molding materials in a chamber decompressed by a vacuum pump to form a laminated product, and includes an oil / water separator that separates moisture from the lubricating oil of the vacuum pump. The present invention relates to a vacuum hot press in which the lubricating oil is circulated to the oil-water separator in accordance with the driving of the vacuum pump.

本発明の真空ホットプレスによれば、真空ポンプを安全かつ高効率に運転することができるので、真空ホットプレスの積層成形の生産性が向上する。   According to the vacuum hot press of the present invention, since the vacuum pump can be operated safely and efficiently, the productivity of the vacuum hot press laminate molding is improved.

図面に基づいて、本発明の実施の形態を詳細に説明する。図１は、本発明の真空ホットプレスの概要を示す構成図である。   Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an outline of a vacuum hot press according to the present invention.

真空ホットプレス１は、チャンバ２と、チャンバ２内の空気を吸引して減圧する真空ポンプ３と、真空ポンプ３内部に封入した潤滑油に混入した水分を分離して除去する油水分離機４と、真空ポンプ３を回転駆動させるモータ５と、真空ポンプ３とチャンバ２を連通させる管路を開閉する第１の電磁弁６と、第１の電磁弁６と真空ポンプ３との管路から分岐して大気へ連通する管路を開閉する第２の電磁弁７と、チャンバ２内を大気へ連通させる管路を開閉する第３の電磁弁８とからなる。そして、チャンバ２では、配線基板とフィルム状樹脂等の成形材料を積層成形する。   The vacuum hot press 1 includes a chamber 2, a vacuum pump 3 that sucks and decompresses air in the chamber 2, and an oil / water separator 4 that separates and removes water mixed in the lubricating oil enclosed in the vacuum pump 3. The motor 5 that rotationally drives the vacuum pump 3, the first electromagnetic valve 6 that opens and closes the conduit that communicates the vacuum pump 3 and the chamber 2, and the branch from the conduit of the first solenoid valve 6 and the vacuum pump 3 The second electromagnetic valve 7 opens and closes the pipe line communicating with the atmosphere, and the third electromagnetic valve 8 opens and closes the pipe line communicating with the atmosphere inside the chamber 2. In the chamber 2, a wiring substrate and a molding material such as a film-like resin are laminated and formed.

チャンバ２内部には、公知の図示しないホットプレス機構が収容されている。すなわち、ホットプレス機構は、固定盤と可動盤との間に多段の熱板をそれらの間隔が可動盤の昇降に応じて開閉するように設けたものである。そして、熱板間が開いているときに、複数の成形材料を重ねた状態でチャンバ２の開口を介して挿入し、その開口を閉鎖後、第１の電磁弁６を開放し、第２の電磁弁７と第３の電磁弁８を閉鎖し、真空ポンプ３を駆動してチャンバ２内を減圧する。そして、可動盤を固定盤に向けて移動させさらに型締して、成形材料を加熱・圧締し、成形材料を積層品になす。このとき、成形材料から発生した水蒸気は、真空ポンプ３に浸入する。真空ポンプ３内に浸入した水蒸気は、凝縮液化して潤滑油に混入するので、真空ポンプ３内部の錆び、ベーンの齧り、真空度低下の原因となる。そこで、潤滑油に混入した水分を除去するため、油水分離機４が設けられている。   A known hot press mechanism (not shown) is accommodated in the chamber 2. That is, the hot press mechanism is provided with a multi-stage hot plate between the fixed platen and the movable platen so that the interval between them is opened and closed according to the elevation of the movable platen. Then, when the space between the hot plates is open, a plurality of molding materials are stacked and inserted through the opening of the chamber 2, the opening is closed, the first electromagnetic valve 6 is opened, and the second The electromagnetic valve 7 and the third electromagnetic valve 8 are closed, and the vacuum pump 3 is driven to depressurize the chamber 2. Then, the movable platen is moved toward the fixed platen and further clamped, the molding material is heated and pressed, and the molding material is made into a laminated product. At this time, water vapor generated from the molding material enters the vacuum pump 3. The water vapor that has entered the vacuum pump 3 condenses and mixes with the lubricating oil, which causes rusting inside the vacuum pump 3, vanes, and a decrease in the degree of vacuum. Therefore, an oil / water separator 4 is provided to remove water mixed in the lubricating oil.

油水分離機４は、フィルタ形状のセパレータエレメントからなる。油水分離の原理は、円筒状のセパレータエレメントを水分の混入した潤滑油が内側から外側へ通過する際、水分は水との強い親和力を有するセパレータエレメントの水分離膜に接触して成長し、油との比重差によって沈殿してドレンから排水されるものである。油水分離機４への潤滑油の循環は、比較的大型の真空ポンプでは、真空ポンプの駆動軸に直列又は並列に接続されたポンプにより行われる。また、比較的小型の真空ポンプでは、真空ポンプの作動により生ずる負圧に基づいて、潤滑油の一部を油水分離機４へ循環させるようにする。   The oil / water separator 4 includes a filter-shaped separator element. The principle of oil-water separation is that when lubricant mixed with water passes through the cylindrical separator element from the inside to the outside, the water grows in contact with the water separation membrane of the separator element having a strong affinity for water. And drained from the drain due to the difference in specific gravity. In a relatively large vacuum pump, the lubricating oil is circulated to the oil / water separator 4 by a pump connected in series or in parallel to the drive shaft of the vacuum pump. Further, in a relatively small vacuum pump, a part of the lubricating oil is circulated to the oil / water separator 4 based on the negative pressure generated by the operation of the vacuum pump.

このように、油水分離機４は、真空ポンプ３が回転駆動されているときのみその機能が発揮されるように構成されている。ところで、真空ホットプレス１においては、チャンバ２に成形材料を搬入し、積層品を搬出する際にはチャンバ２は大気に開放され、真空ポンプ３は停止している。また、成形材料を加熱・圧締する全期間中チャンバ２内を真空にする必要のない成形材料もあり、真空ポンプ３の作動時間は制限されている。そのため、チャンバ２内を減圧しないときでも、第１の電磁弁６と第２の電磁弁７を閉鎖し、第３の電磁弁８を開放して、真空ポンプ３を運転・駆動し真空ポンプ３に直接接続されている管路内のみを減圧するようにした。こうすることにより、チャンバ２内を減圧しないときは停止させていた真空ポンプ３を運転・駆動させることができ、油水分離機４に潤滑油を循環させる時間が大幅に増加して、潤滑油の油水分離が極めて高効率かつ効果的に実行できる。   Thus, the oil-water separator 4 is configured so that its function is exhibited only when the vacuum pump 3 is rotationally driven. By the way, in the vacuum hot press 1, when the molding material is carried into the chamber 2 and the laminated product is carried out, the chamber 2 is opened to the atmosphere, and the vacuum pump 3 is stopped. In addition, there is a molding material that does not require a vacuum in the chamber 2 during the entire period of heating and pressing the molding material, and the operation time of the vacuum pump 3 is limited. Therefore, even when the pressure in the chamber 2 is not reduced, the first electromagnetic valve 6 and the second electromagnetic valve 7 are closed, the third electromagnetic valve 8 is opened, and the vacuum pump 3 is operated and driven to operate the vacuum pump 3. The pressure in the pipe line directly connected to was reduced. By doing so, the vacuum pump 3 that has been stopped when the inside of the chamber 2 is not depressurized can be operated and driven, and the time for circulating the lubricating oil to the oil-water separator 4 is greatly increased. Oil-water separation can be performed very efficiently and effectively.

真空ホットプレス１の積層成形例を説明する。第１の電磁弁６、第２の電磁弁７及び第３の電磁弁８を開放し、真空ポンプ３が停止しているとき、チャンバ２の開口に設けた扉を開放し、重ねた成形材料をその扉を介して熱板間に挿入する。扉を閉鎖してチャンバ２内を気密にし、第２の電磁弁７及び第３の電磁弁８を閉鎖し、真空ポンプ３を駆動開始する。可動盤を上昇させて熱板間を接近させ、成形材料を加熱・圧締する。この間、真空ポンプ３は第１の電磁弁６を介してチャンバ２内の空気を吸引する。この減圧工程は、成形材料の種類や加熱・圧締条件に応じて成形材料の加熱・圧締中の一部期間のみ行うこともある。減圧工程が終了すると、第１の電磁弁６及び第２の電磁弁７を閉鎖し、第３の電磁弁８を開放する。このとき、チャンバ２内は大気に連通し、真空ポンプ３は真空ポンプ３に直接接続された管路内のみを減圧する。そして、真空ポンプ３は連続して駆動され、その潤滑油は油水分離機４に循環されて水分が分離・除去される。この油水分離工程は、成形材料の加熱・圧締中から次の成形開始のためのチャンバ２の扉閉鎖時まで継続可能である。   An example of laminated molding of the vacuum hot press 1 will be described. When the first solenoid valve 6, the second solenoid valve 7 and the third solenoid valve 8 are opened and the vacuum pump 3 is stopped, the door provided at the opening of the chamber 2 is opened, and the molding material is overlapped. Is inserted between the hot plates through the door. The door is closed to make the inside of the chamber 2 airtight, the second electromagnetic valve 7 and the third electromagnetic valve 8 are closed, and the vacuum pump 3 is started to be driven. The movable platen is raised to bring the hot plates closer together, and the molding material is heated and pressed. During this time, the vacuum pump 3 sucks air in the chamber 2 through the first electromagnetic valve 6. This depressurization step may be performed only during a partial period during heating / pressing of the molding material depending on the type of molding material and heating / pressing conditions. When the decompression step is completed, the first electromagnetic valve 6 and the second electromagnetic valve 7 are closed, and the third electromagnetic valve 8 is opened. At this time, the inside of the chamber 2 communicates with the atmosphere, and the vacuum pump 3 decompresses only the inside of the pipe line directly connected to the vacuum pump 3. The vacuum pump 3 is continuously driven, and the lubricating oil is circulated to the oil / water separator 4 to separate and remove moisture. This oil / water separation process can be continued from the time of heating / pressing the molding material to the time when the door of the chamber 2 is closed to start the next molding.

油水分離工程が終了したときには、真空ポンプ３の駆動を停止させるとともに、第２の電磁弁７を開放する。積層成形が終了したとき、第１の電磁弁６を開放するとともに、可動盤を下降させて熱板間を開放し、熱板間で成形材料から積層成形された積層品をチャンバ２の開放した扉を介して取り出す。   When the oil / water separation step is finished, the driving of the vacuum pump 3 is stopped and the second electromagnetic valve 7 is opened. When the lamination molding is finished, the first solenoid valve 6 is opened, the movable platen is lowered to open the space between the hot plates, and the laminated product formed by lamination from the molding material between the hot plates is opened in the chamber 2. Take out through the door.

この発明は以上説明した実施例に限定されるものではなく、発明の趣旨を逸脱しない範囲内において種々の変更を付加して実施することができる。例えば、第１の電磁弁と第２の電磁弁は、個別のもので例示したが、同様の機能を有する単一のものであってもよい。また、油水分離工程は、真空ホットプレスの自動運転中での実施例を説明したが、任意の時期に手動で実施してもよい。さらに、油水分離工程の期間は、真空ホットプレスの工程運転の区切りに合わせたものであってもよいし、タイマで別個に設定したものであってもよい。   The present invention is not limited to the embodiments described above, and various modifications can be added and implemented without departing from the spirit of the invention. For example, the first solenoid valve and the second solenoid valve are individually illustrated, but may be a single solenoid valve having a similar function. Moreover, although the oil-water separation process demonstrated the Example in the automatic operation of a vacuum hot press, you may implement manually at arbitrary timings. Furthermore, the period of the oil / water separation step may be set according to the interval of the process operation of the vacuum hot press, or may be set separately by a timer.

本発明の真空ホットプレスの概要を示す構成図である。It is a block diagram which shows the outline | summary of the vacuum hot press of this invention.

符号の説明Explanation of symbols

１ 真空ホットプレス
２ チャンバ
３ 真空ポンプ
４ 油水分離機
５ モータ
６ 第１の電磁弁
７ 第２の電磁弁
８ 第３の電磁弁 DESCRIPTION OF SYMBOLS 1 Vacuum hot press 2 Chamber 3 Vacuum pump 4 Oil-water separator 5 Motor 6 1st solenoid valve 7 2nd solenoid valve 8 3rd solenoid valve

Claims (3)

真空ポンプにより減圧されたチャンバ内で複数の成形材料を加熱・圧締して積層品となす真空ホットプレスは、前記真空ポンプの潤滑油から水分を分離する油水分離機を備えるとともに、前記潤滑油の前記油水分離機への循環を前記真空ポンプの駆動に伴って行うことを特徴とする真空ホットプレス。   A vacuum hot press that heats and presses a plurality of molding materials in a chamber decompressed by a vacuum pump to form a laminated product includes an oil-water separator that separates moisture from the lubricating oil of the vacuum pump, and the lubricating oil The vacuum hot press is characterized in that the circulation to the oil-water separator is performed with the driving of the vacuum pump. 前記真空ポンプと前記チャンバとの間の管路を開閉する第１の電磁弁を設けるとともに、前記第１の電磁弁と前記真空ポンプとの間の管路から分岐し大気へ連通する管路を開閉する第２の電磁弁を設けた請求項１に記載の真空ホットプレス。   A first electromagnetic valve that opens and closes a conduit between the vacuum pump and the chamber; and a conduit that branches from the conduit between the first solenoid valve and the vacuum pump and communicates with the atmosphere. The vacuum hot press according to claim 1, further comprising a second electromagnetic valve that opens and closes. 請求項１又は２に記載の真空ホットプレスにおける前記真空ポンプの駆動は、前記真空ポンプが前記チャンバへ連通し前記チャンバ内を減圧する場合と、前記真空ポンプが前記チャンバへ連通せず前記真空ポンプに直接接続された管路のみを減圧する場合とに択一的に選択して制御される真空ホットプレスの制御方法。   3. The driving of the vacuum pump in the vacuum hot press according to claim 1 or 2 is performed when the vacuum pump communicates with the chamber to depressurize the chamber and when the vacuum pump does not communicate with the chamber. A method for controlling a vacuum hot press that is selectively selected and controlled in the case of depressurizing only a pipe line directly connected to the pipe.
JP2006348705A 2006-12-26 2006-12-26 Vacuum hot press and its control method Expired - Fee Related JP4730841B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05200766A (en) * 1992-01-30 1993-08-10 Meiki Co Ltd Vacuum hot press device
JPH06193564A (en) * 1992-12-25 1994-07-12 Brother Ind Ltd Oil/water separator
JPH09250475A (en) * 1996-03-14 1997-09-22 Chubu Corp:Kk Vacuum pump
JP2002070775A (en) * 2000-08-25 2002-03-08 Tokyo Rika Kikai Kk Oil rotation vacuum pump and oil exchange method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05200766A (en) * 1992-01-30 1993-08-10 Meiki Co Ltd Vacuum hot press device
JPH06193564A (en) * 1992-12-25 1994-07-12 Brother Ind Ltd Oil/water separator
JPH09250475A (en) * 1996-03-14 1997-09-22 Chubu Corp:Kk Vacuum pump
JP2002070775A (en) * 2000-08-25 2002-03-08 Tokyo Rika Kikai Kk Oil rotation vacuum pump and oil exchange method

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