JP4509606B2 - Hot press hot plate temperature control device - Google Patents

Hot press hot plate temperature control device Download PDF

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JP4509606B2
JP4509606B2 JP2004072210A JP2004072210A JP4509606B2 JP 4509606 B2 JP4509606 B2 JP 4509606B2 JP 2004072210 A JP2004072210 A JP 2004072210A JP 2004072210 A JP2004072210 A JP 2004072210A JP 4509606 B2 JP4509606 B2 JP 4509606B2
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hot plate
expansion tank
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伸一 吉川
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Description

本発明は、ホットプレスの熱板を温調するための媒体を加熱または冷却する熱板温度制御装置に関するものである。   The present invention relates to a hot plate temperature control device for heating or cooling a medium for temperature control of a hot press hot plate.

ホットプレスの熱板を温調するための媒体を加熱または冷却する熱板温度制御装置は、特許文献1ないし3に記載されるように、膨張タンクを備えている。膨張タンクはその機能上熱板より上方に設けられる必要があり、熱板を多数段設けた設置高さの高いホットプレスにおいては、膨張タンクの配設が困難である。この問題を解決する手段として、特許文献1ないし3に記載されるように、膨張タンクに窒素ガス等の不活性ガスを封入して媒体を加圧することが実施されている。   As described in Patent Documents 1 to 3, a hot plate temperature control device for heating or cooling a medium for controlling the temperature of a hot press hot plate includes an expansion tank. The expansion tank needs to be provided above the hot plate due to its function, and it is difficult to dispose the expansion tank in a hot press having a high installation height in which a plurality of hot plates are provided. As means for solving this problem, as described in Patent Documents 1 to 3, pressurizing a medium by enclosing an inert gas such as nitrogen gas in an expansion tank.

しかしながら、膨張タンクに不活性ガスを加圧封入することには、圧力容器の法規制があり、その管理には様々な費用と労力を必要とする。   However, pressurizing and sealing an inert gas in an expansion tank has a pressure vessel regulation, and its management requires various costs and labor.

特公平4−2409号公報(第2頁、第1図)Japanese Examined Patent Publication No. 4-2409 (page 2, Fig. 1) 特許第2571139号公報(第2頁、第1図)Japanese Patent No. 2571139 (page 2, FIG. 1) 特開2003−205399号公報(段落0012、段落0041)JP 2003-205399 A (paragraph 0012, paragraph 0041)

本発明は、上記の課題を解決すべくなされたものであり、膨張タンクに不活性ガスを加圧封入することなく、媒体にヘッド圧力を加えることのできる熱板温度制御装置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 provides a hot plate temperature control device capable of applying a head pressure to a medium without pressurizing and sealing an inert gas in an expansion tank. Objective.

すなわち本発明は、ホットプレスの熱板を温調するための媒体を加熱または冷却する熱板温度制御装置において、前記熱板を含む媒体回路中に前記媒体を充満させるための膨張タンクに、空圧源の空圧を減圧する圧力調整弁と、減圧された空気の量を調整する流量調整弁とからなるエア供給装置と前記膨張タンク内の空間から大気に連通する通路が絞られた排気管とを備え、膨張タンク内の上部空間に供給された所定の空圧のエアが媒体の液面を押圧するとともに前記上部空間を経由して排気管から大気に放出されることにより不活性ガスを加圧封入することなく媒体にヘッド圧力を加える機構を設けたホットプレスの熱板温度制御装置に係る。
That is, the present invention relates to a hot plate temperature control device for heating or cooling a medium for temperature control of a hot plate of a hot press, and an expansion tank for filling the medium in a medium circuit including the hot plate is empty. An air supply device comprising a pressure adjustment valve for reducing the air pressure of the pressure source and a flow rate adjustment valve for adjusting the amount of the reduced air, and an exhaust pipe having a narrow passage communicating with the atmosphere from the space in the expansion tank The air having a predetermined air pressure supplied to the upper space in the expansion tank presses the liquid level of the medium and is released from the exhaust pipe to the atmosphere via the upper space, thereby generating the inert gas. The present invention relates to a hot plate temperature control apparatus for a hot press provided with a mechanism for applying a head pressure to a medium without being sealed under pressure .

本発明は、ホットプレスの熱板を温調するための媒体を加熱または冷却する熱板温度制御装置において、前記熱板を含む媒体回路中に前記媒体を充満させるための膨張タンクに、空圧源の空圧を減圧する圧力調整弁と、減圧された空気の量を調整する流量調整弁とからなるエア供給装置と前記膨張タンク内の空間から大気に連通する通路が絞られた排気管とを備え、膨張タンク内の上部空間に供給された所定の空圧のエアが媒体の液面を押圧するとともに前記上部空間を経由して排気管から大気に放出されることにより不活性ガスを加圧封入することなく媒体にヘッド圧力を加える機構を設けたので、多大な費用と労力なしに媒体にヘッド圧力を加えることができ、膨張タンクを比較的低い位置に配設できるとともに、媒体の温度をより高い温度まで加熱することができる。 The present invention relates to a hot plate temperature control apparatus for heating or cooling a medium for temperature control of a hot plate of a hot press, wherein an air pressure is applied to an expansion tank for filling the medium circuit in the medium circuit including the hot plate. a pressure regulating valve for reducing the air pressure source, an exhaust pipe passage communicating with the atmosphere is squeezed out of the space depressurized air supply device and the expansion tank comprising a flow regulating valve for adjusting the amount of air The air of a predetermined pneumatic pressure supplied to the upper space in the expansion tank presses the liquid level of the medium and is discharged to the atmosphere from the exhaust pipe via the upper space, thereby adding inert gas. Since the mechanism for applying the head pressure to the medium without sealing is provided, the head pressure can be applied to the medium without much cost and labor, the expansion tank can be disposed at a relatively low position, and the temperature of the medium The higher It can be heated up every time.

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、本発明の熱板温度制御装置の媒体回路と膨張タンクの加圧機構を説明するブロック図である。   Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram for explaining a medium circuit and an expansion tank pressurizing mechanism of a hot plate temperature control apparatus according to the present invention.

図1に示すように、熱板温度制御装置1は、プリント配線基板等を積層成形するホットプレスに多数段対向させて配設される熱板14を400℃前後まで加熱するための熱媒を、加熱または冷却して温度制御する装置である。熱板温度制御装置1のニュートラル時には、供給ポンプ4から吐出された媒体は、熱板14に穿孔された複数の穿孔穴を流通して熱板14を経由し、冷却三方弁6のABポートからBポートへ流通して循環する。また、循環ポンプ3が吐出した媒体は、温度センサ15で温度が検出され、図示しない制御装置によりヒータ2で所定温度となるように通電制御されて加熱三方弁5のABポートからBポートへ流通して循環する。制御装置から加熱の指令が出たときには、媒体は温度センサ15の検出温度に基づいて(熱板14の近傍の管路に設けた図示しない温度センサに基づくこともある。)、加熱三方弁5のABポートからAポートへ流量が制御されて流通し、その媒体は供給ポンプ4により熱板14に供給されて熱板14を加熱する。このとき、冷却三方弁6はABポートからBポートへ切り換えられたままであるから、ヒータ2で加熱された媒体は、循環ポンプ3と供給ポンプ4との接続管路部で平衡を保ちながら、略全量が熱板14に供給される。   As shown in FIG. 1, the hot plate temperature control device 1 is a heating medium for heating a hot plate 14 arranged to face a hot press for laminating and forming a printed wiring board and the like up to about 400 ° C. It is a device that controls the temperature by heating or cooling. When the hot plate temperature control device 1 is in the neutral state, the medium discharged from the supply pump 4 passes through the hot plate 14 through a plurality of perforated holes drilled in the hot plate 14 and from the AB port of the cooling three-way valve 6. Circulate and circulate to B port. Further, the temperature of the medium discharged from the circulation pump 3 is detected by the temperature sensor 15, energized and controlled by the control device (not shown) so as to reach a predetermined temperature by the heater 2, and flows from the AB port of the heating three-way valve 5 to the B port And circulate. When a heating command is issued from the control device, the medium is based on the temperature detected by the temperature sensor 15 (may be based on a temperature sensor (not shown) provided in a pipe line near the hot plate 14). The flow rate is controlled to flow from the AB port to the A port. The medium is supplied to the hot plate 14 by the supply pump 4 to heat the hot plate 14. At this time, since the cooling three-way valve 6 is still switched from the AB port to the B port, the medium heated by the heater 2 is substantially maintained while maintaining the equilibrium in the connecting line portion between the circulation pump 3 and the supply pump 4. The entire amount is supplied to the hot plate 14.

一方、制御装置から冷却の指令が出たときには、加熱三方弁5はABポートからBポートへ流通するように切り換えられる。そして、媒体は温度センサ15の検出温度に基づいて(熱板14の近傍の管路に設けた図示しない温度センサに基づくこともある。)、冷却三方弁6のABポートからAポートへ流量が制御されて流通し、その媒体は冷却器7で冷却された後、供給ポンプ4により熱板14へ供給されて熱板14を冷却する。 On the other hand, when a cooling command is issued from the control device, the heating three-way valve 5 is switched so as to flow from the AB port to the B port. The medium is flowed from the AB port of the cooling three-way valve 6 to the A port based on the temperature detected by the temperature sensor 15 (may be based on a temperature sensor (not shown) provided in a pipe line near the hot plate 14). The medium is controlled and circulated, and the medium is cooled by the cooler 7 and then supplied to the hot plate 14 by the supply pump 4 to cool the hot plate 14.

上記のような熱板14を含めた媒体回路に媒体が常に満たされているようにするため、全ての機器の上方となる位置に、媒体回路に連通した膨張タンク8が配設される。膨張タンク8は、媒体の熱膨張による増量分を吸収した場合であっても、その上部に空間が残るような容積を有する。そして、膨張タンク8の最上部には、前記空間から大気に連通する排気管9が設けられる。さらに、膨張タンク8最上部の排気管9から離隔した位置には、エア供給装置13が設けられる。   In order to ensure that the medium is always filled in the medium circuit including the hot plate 14 as described above, an expansion tank 8 communicating with the medium circuit is disposed at a position above all the devices. The expansion tank 8 has a volume such that a space remains in the upper part even when the increase due to the thermal expansion of the medium is absorbed. An exhaust pipe 9 that communicates from the space to the atmosphere is provided at the top of the expansion tank 8. Further, an air supply device 13 is provided at a position separated from the exhaust pipe 9 at the top of the expansion tank 8.

エア供給装置13は、0.3〜0.4Mpaの空圧源10からのエアを0.02Mpa程度に減圧する圧力調整弁11と、圧力調整弁11から膨張タンク8への管路に分岐して設けられる流量調整弁12とからなる。エア供給装置13から膨張タンク8へ供給されたエアは、膨張タンク8の上部空間を経由して排気管9から大気へ放出される。このとき、排気管9はその通路が絞られているので、エアは圧力調整弁11で減圧された所定の圧力を保つのである。そして、この空圧が媒体の液面を押圧するので、媒体にはヘッド圧力が発生する。そのため、膨張タンク8は、空圧0.02Mpaが高さ2000mmに相当するので、空圧に応じてより低い位置に配設可能となり、熱板温度制御装置1の高さを低くすることができる。   The air supply device 13 branches into a pressure regulating valve 11 that depressurizes air from the air pressure source 10 of 0.3 to 0.4 Mpa to about 0.02 Mpa, and a pipe line from the pressure regulating valve 11 to the expansion tank 8. The flow rate adjusting valve 12 is provided. The air supplied from the air supply device 13 to the expansion tank 8 is discharged from the exhaust pipe 9 to the atmosphere via the upper space of the expansion tank 8. At this time, since the passage of the exhaust pipe 9 is restricted, the air maintains a predetermined pressure reduced by the pressure regulating valve 11. Since this air pressure presses the liquid level of the medium, a head pressure is generated on the medium. Therefore, since the expansion tank 8 has an air pressure of 0.02 Mpa corresponding to a height of 2000 mm, it can be disposed at a lower position according to the air pressure, and the height of the hot plate temperature control device 1 can be reduced. .

また、熱媒が加圧されることにより熱媒の蒸気圧が上昇して、より高い温度での熱板の温度制御が可能となるとともに、熱媒が気化しないので循環ポンプ3や供給ポンプ4にキャビティーションが発生せずポンプの寿命が延びる。なお、空圧を0.02Mpa高くしたことにより、熱媒の蓄熱温度を通常の最高温度より10℃高くすることが可能となった。   Further, when the heat medium is pressurized, the vapor pressure of the heat medium is increased, so that the temperature of the hot plate can be controlled at a higher temperature and the heat medium is not vaporized, so that the circulation pump 3 and the supply pump 4 are used. No cavitation occurs and the pump life is extended. Note that, by increasing the air pressure by 0.02 Mpa, the heat storage temperature of the heat medium can be increased by 10 ° C. from the normal maximum temperature.

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。   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.

本発明の熱板温度制御装置の媒体回路と膨張タンクの加圧機構を説明するブロック図である。It is a block diagram explaining the pressurization mechanism of the medium circuit and expansion tank of the hot plate temperature control apparatus of this invention.

符号の説明Explanation of symbols

1 熱板温度制御装置
2 ヒータ
3 循環ポンプ
4 供給ポンプ
5 加熱三方弁
6 冷却三方弁
7 冷却器
8 膨張タンク
9 排気管
10 空圧源
11 圧力調整弁
12 流量調整弁
13 エア供給装置
14 熱板
15 温度センサ
DESCRIPTION OF SYMBOLS 1 Hot plate temperature control apparatus 2 Heater 3 Circulation pump 4 Supply pump 5 Heating three-way valve 6 Cooling three-way valve 7 Cooler 8 Expansion tank 9 Exhaust pipe 10 Air pressure source 11 Pressure adjustment valve 12 Flow rate adjustment valve 13 Air supply apparatus 14 Heat plate 15 Temperature sensor

Claims (2)

ホットプレスの熱板を温調するための媒体を加熱または冷却する熱板温度制御装置において、
前記熱板を含む媒体回路中に前記媒体を充満させるための膨張タンクに、空圧源の空圧を減圧する圧力調整弁と、減圧された空気の量を調整する流量調整弁とからなるエア供給装置と前記膨張タンク内の空間から大気に連通する通路が絞られた排気管とを備え、膨張タンク内の上部空間に供給された所定の空圧のエアが媒体の液面を押圧するとともに前記上部空間を経由して排気管から大気に放出されることにより不活性ガスを加圧封入することなく媒体にヘッド圧力を加える機構を設けたことを特徴とするホットプレスの熱板温度制御装置。
In a hot plate temperature control device for heating or cooling a medium for controlling the temperature of a hot press hot plate,
The expansion tank for filling the medium in a medium circuit including the hot plate, air consists of a pressure regulating valve for reducing the air pressure air pressure source, a flow rate adjusting valve for adjusting the amount of vacuum air A supply device and an exhaust pipe having a narrowed passage communicating with the atmosphere from the space in the expansion tank, and air of a predetermined air pressure supplied to the upper space in the expansion tank presses the liquid level of the medium A hot plate temperature control device for a hot press comprising a mechanism for applying a head pressure to a medium without pressurizing and sealing an inert gas by being discharged from the exhaust pipe to the atmosphere via the upper space .
前記膨張タンクは、全ての機器の上方となる位置に配設され、媒体の熱膨張による増量分を吸収した場合であっても、その上部に空間が残るような容積を有する請求項1に記載のホットプレスの熱板温度制御装置。
2. The expansion tank according to claim 1, wherein the expansion tank is disposed at a position above all of the devices and has a volume such that a space remains in an upper portion of the expansion tank even when the increase due to thermal expansion of the medium is absorbed. Hot press hot plate temperature control device.
JP2004072210A 2004-03-15 2004-03-15 Hot press hot plate temperature control device Expired - Fee Related JP4509606B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100934042B1 (en) * 2009-05-15 2009-12-29 조중상 Apparatus for controlling temperature of thermal oil
CN106945338B (en) * 2017-03-30 2019-03-01 扬力集团股份有限公司 A kind of control system of press machine dry clutch brake
CN111705427A (en) * 2020-07-26 2020-09-25 潍坊驼王实业有限公司 Hot air conveying device of polyester filament non-woven geotextile production equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5628399A (en) * 1979-08-16 1981-03-19 Sanki Eng Co Ltd Control device for water hammer preventive air tank in liquid transfer pipeline
JPS63302011A (en) * 1987-06-02 1988-12-08 Meiki Co Ltd Heating plate temperature control device for hot press
JPH03197044A (en) * 1989-12-26 1991-08-28 Meiki Co Ltd Hot plate temperature control apparatus in hot press
JP2003205399A (en) * 2001-11-06 2003-07-22 Kitagawa Elaborate Mach Co Ltd Press device, and control method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5628399A (en) * 1979-08-16 1981-03-19 Sanki Eng Co Ltd Control device for water hammer preventive air tank in liquid transfer pipeline
JPS63302011A (en) * 1987-06-02 1988-12-08 Meiki Co Ltd Heating plate temperature control device for hot press
JPH03197044A (en) * 1989-12-26 1991-08-28 Meiki Co Ltd Hot plate temperature control apparatus in hot press
JP2003205399A (en) * 2001-11-06 2003-07-22 Kitagawa Elaborate Mach Co Ltd Press device, and control method thereof

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