JP3347398B2 - Ink unit cooling structure - Google Patents
Ink unit cooling structureInfo
- Publication number
- JP3347398B2 JP3347398B2 JP13712593A JP13712593A JP3347398B2 JP 3347398 B2 JP3347398 B2 JP 3347398B2 JP 13712593 A JP13712593 A JP 13712593A JP 13712593 A JP13712593 A JP 13712593A JP 3347398 B2 JP3347398 B2 JP 3347398B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- cooling water
- supply pipe
- temperature
- cooling
- 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 - Lifetime
Links
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、輪転印刷機のインキ装
置の発熱を防止する冷却構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure for preventing heat generation of an inking device of a rotary printing press.
【０００２】[0002]
【従来の技術】輪転印刷機には、図２に示すように、一
対のゴム胴１の間にウエブ２を通し、両面を印刷するも
のがあり、印刷色の数に応じて印刷ユニット３が並設さ
れている。各ゴム胴１には版胴４が転接し、各版胴４の
版面には上下のインキ装置５，６によってインキが供給
（転移）される。2. Description of the Related Art As shown in FIG. 2, there is a rotary printing press in which a web 2 is passed between a pair of blanket cylinders 1 to print on both sides, and a printing unit 3 is provided in accordance with the number of printing colors. It is juxtaposed. A plate cylinder 4 is in rolling contact with each blanket cylinder 1, and ink is supplied (transferred) to the plate surface of each plate cylinder 4 by upper and lower ink devices 5 and 6.
【０００３】インキ装置５，６は、インキつぼからイン
キを送り出すつぼローラと、版胴４（版面）に接触する
インキ着けローラと、つぼローラに盛られたインキを均
一に分散してインキ着けローラに供給するインキローラ
群とにより構成されている。The inking devices 5 and 6 include a fountain roller for feeding ink from an ink fountain, an ink forming roller that comes into contact with the plate cylinder 4 (plate surface), and an ink forming roller that uniformly disperses the ink loaded on the fountain roller. And an ink roller group to be supplied to the printer.
【０００４】また、輪転印刷機には、版胴４の版面に湿
し水を供給する給水装置が設けられている。Further, the rotary printing press is provided with a water supply device for supplying dampening water to the plate surface of the plate cylinder 4.
【０００５】印刷機を運転すると、インキ装置５，６の
温度が上昇し、インキの粘性等の性質が変化し、所望の
印刷物を得ることができない。また、印刷機には給水装
置を廃した水なし印刷機が普及しているが、水なし印刷
機では湿し水による冷却効果が失なわれ、版胴４の版面
温度が上昇して地汚れが発生してしまう。When the printing press is operated, the temperature of the inking units 5 and 6 rises, and the properties such as the viscosity of the ink change, making it impossible to obtain a desired printed matter. Waterless printing presses, in which a water supply device is eliminated, have become widespread among printing presses. However, in a waterless printing press, the cooling effect of dampening water has been lost, and the plate surface temperature of the plate cylinder 4 has risen and soiling has occurred. Will occur.
【０００６】そこで、インキ装置５，６にはローラ群や
インキを冷却する冷却構造が備えられ、インキの性質を
保つと共に水なし印刷機にあっては版胴４の版面温度を
一定に保っている。Therefore, the inking units 5 and 6 are provided with a roller group and a cooling structure for cooling the ink to maintain the properties of the ink and to keep the plate surface temperature of the plate cylinder 4 constant in a waterless printing press. I have.
【０００７】図３、図４に基づいて従来の冷却構造を説
明する。図３には冷却ローラの断面、図４には冷却水系
路を示してある。A conventional cooling structure will be described with reference to FIGS. FIG. 3 shows a cross section of the cooling roller, and FIG. 4 shows a cooling water passage.
【０００８】インキ装置５，６のインキローラ群のう
ち、特定の１つまたは複数のローラ（例えば振りロー
ラ）を図３に示した冷却ローラ１１とする。冷却ローラ
１１の中空部１１ａには導入管１２が挿入され、導入管
１２の一端（図中右端）はロータリジョイント１３を介
して供給配管１４に連結され、導入管１２の他端（図中
左端）は中空部１１ａに臨んでいる。冷却ローラ１１の
中空部１１ａは戻り配管１５に連結され、中空部１１ａ
に供給された冷却水は戻り配管１５に排出される。冷却
水は導入管１２から冷却ローラ１１の中空部１１ａに送
られ、熱交換した後戻り配管１５に排出される。例えば
振りローラを冷却ローラ１１とすることで、インキ温度
の上昇を抑制し、版胴４の版面温度を一定に保つことが
できる。[0008] One or a plurality of specific rollers (for example, swing rollers) in the ink roller group of the inking devices 5 and 6 are cooling rollers 11 shown in FIG. An introduction pipe 12 is inserted into the hollow portion 11a of the cooling roller 11, one end (right end in the figure) of the introduction pipe 12 is connected to a supply pipe 14 via a rotary joint 13, and the other end of the introduction pipe 12 (the left end in the figure) ) Faces the hollow portion 11a. The hollow portion 11a of the cooling roller 11 is connected to the return pipe 15 and the hollow portion 11a
Is supplied to the return pipe 15. The cooling water is sent from the introduction pipe 12 to the hollow portion 11 a of the cooling roller 11, and after heat exchange, is discharged to the return pipe 15. For example, by using the cooling roller 11 as the oscillating roller, it is possible to suppress an increase in the ink temperature and keep the plate surface temperature of the plate cylinder 4 constant.
【０００９】図４に示すように、例えば４つの印刷ユニ
ット３のインキ装置５，６の供給配管１４及び及び戻り
配管１５は供給管１６及び戻り管１７を介して冷却装置
１８に連結されている。供給管１６には冷却水を送るポ
ンプ１９が設けられ、ポンプ１９の下流側における供給
管１６と戻り管１７はバイパス管２０で連通されてい
る。バイパス管２０と戻り管１７の連結部には三方弁２
１が設けられている。三方弁２１は、三方弁２１を挟ん
で戻り管１７の上流側から下流側への冷却水の流量を調
節すると共に、バイパス管２０から戻り管１７の下流側
への冷却水の流量を調節する。戻り管１７には温度セン
サ２２が設けられ、温度センサ２２によりインキ装置
５，６の冷却ローラ１１から排出された冷却水の温度が
検出される。温度センサ２２で検出された温度に基づい
て、制御装置２３により三方弁２１の開度が変更され
る。As shown in FIG. 4, for example, the supply pipe 14 and the return pipe 15 of the inking devices 5 and 6 of the four printing units 3 are connected to the cooling device 18 via the supply pipe 16 and the return pipe 17. . A pump 19 for sending cooling water is provided in the supply pipe 16, and the supply pipe 16 and the return pipe 17 on the downstream side of the pump 19 are connected by a bypass pipe 20. A three-way valve 2 is provided at the connection between the bypass pipe 20 and the return pipe 17.
1 is provided. The three-way valve 21 adjusts the flow rate of the cooling water from the upstream side to the downstream side of the return pipe 17 with the three-way valve 21 interposed therebetween, and also adjusts the flow rate of the cooling water from the bypass pipe 20 to the downstream side of the return pipe 17. . A temperature sensor 22 is provided in the return pipe 17, and the temperature sensor 22 detects the temperature of the cooling water discharged from the cooling rollers 11 of the inking devices 5 and 6. The opening of the three-way valve 21 is changed by the controller 23 based on the temperature detected by the temperature sensor 22.
【００１０】印刷機の運転中、ポンプ１９の駆動により
冷却水は冷却装置１８から供給管１６、供給配管１４を
経て冷却ローラ１１に送られ（図４中Ｂ方向）、戻り配
管１５に排出されて戻り管１７から冷却装置１８に戻
る。また、三方弁の開度を調節することで、バイパス管
２０から戻り管１７に冷却水をバイパスさせる（図４中
Ａ方向）。During operation of the printing press, the cooling water is sent from the cooling device 18 to the cooling roller 11 through the supply pipe 16 and the supply pipe 14 (in the direction B in FIG. 4) by the operation of the pump 19, and is discharged to the return pipe 15. And return to the cooling device 18 from the return pipe 17. In addition, by adjusting the opening of the three-way valve, the cooling water is bypassed from the bypass pipe 20 to the return pipe 17 (A direction in FIG. 4).
【００１１】温度センサ２２により冷却水の温度を検出
し、冷却水の温度が設定値より高くなると、即ちインキ
装置５，６の温度が高くなると、制御装置２３により、
図４中Ｂ方向の冷却水の流量が多く、図４中Ａ方向の流
量が少なくなるように、三方弁２１の開度を調節する。
逆にインキ装置５，６の温度が低くなると（冷却水の温
度が設定値に近づくと）、図４中Ａ方向の流量が多く、
図４中Ｂ方向の流量が少なくなるように三方弁２１の開
度を調節する。When the temperature of the cooling water is detected by a temperature sensor 22 and the temperature of the cooling water is higher than a set value, that is, when the temperatures of the inking units 5 and 6 are high, the control unit 23
The opening of the three-way valve 21 is adjusted so that the flow rate of the cooling water in the direction B in FIG. 4 is large and the flow rate in the direction A in FIG.
Conversely, when the temperature of the inking devices 5 and 6 decreases (when the temperature of the cooling water approaches the set value), the flow rate in the direction A in FIG.
The opening of the three-way valve 21 is adjusted so that the flow rate in the direction B in FIG. 4 decreases.
【００１２】これにより、インキ装置５，６の温度変化
（上昇）を抑え、インキの性質変化を防止することがで
きる。As a result, the temperature change (rise) of the ink devices 5 and 6 can be suppressed, and the change in the properties of the ink can be prevented.
【００１３】図５に示すように、印刷ユニット３毎の供
給配管１４及び戻り配管１５に、図４で示したバイパス
管２０、三方弁２１、温度センサ２２及び制御装置２３
を設け、印刷ユニット３毎に冷却水をＢ方向に多く送っ
たりＡ方向にバイパスさせてＢ方向の流量を少なくし、
インキ装置５，６の温度変化を抑えるようにすることも
行なわれている。As shown in FIG. 5, a bypass pipe 20, a three-way valve 21, a temperature sensor 22 and a control unit 23 shown in FIG.
Is provided, and the cooling water is sent to the printing unit 3 in a large amount in the B direction or bypassed in the A direction to reduce the flow rate in the B direction.
In some cases, the temperature change of the inking devices 5 and 6 is suppressed.
【００１４】また、図示はしていないが、各インキ装置
５，６毎に供給配管１４及び戻り配管１５を設け、三方
弁２１の開度を調節してインキの温度制御を行なってい
る場合もある。Although not shown, a supply pipe 14 and a return pipe 15 are provided for each of the ink devices 5 and 6, and the temperature of the ink is controlled by adjusting the opening of the three-way valve 21. is there.
【００１５】[0015]
【発明が解決しようとする課題】図４で示した冷却構造
の場合、各印刷ユニット３に流れ込む冷却水の流量は図
示しない手動の弁により調節している。このため、各印
刷ユニット３での温度調節は作業者が各弁を開閉して行
なっており、面倒で時間がかかる作業で温度調節もむず
かしい。また、冷却水の温度が設定値に近づくとＢ方向
の流量が少なくなって冷却水はＡ方向に流れ込むため、
インキ装置５，６内に冷却水が滞留し、温度のムラが生
じやすくなると共に配管内にゴミ等が溜りやすくなる。In the case of the cooling structure shown in FIG. 4, the flow rate of the cooling water flowing into each printing unit 3 is adjusted by a manual valve (not shown). For this reason, the temperature adjustment in each printing unit 3 is performed by opening and closing each valve by an operator, and it is difficult and time-consuming work to adjust the temperature. Also, when the temperature of the cooling water approaches the set value, the flow rate in the B direction decreases and the cooling water flows in the A direction,
Cooling water stays in the inking devices 5 and 6, which tends to cause temperature unevenness and easily cause dust and the like to accumulate in the piping.
【００１６】図５で示した冷却構造の場合、各印刷ユニ
ット３毎の温度調節は容易になるが、図４で示したもの
と同様に、インキ装置５，６内の冷却水の滞留は避けら
れず、温度ムラが生じやすく、配管内にゴミ等が溜りや
すい。また、上流側のインキ装置５，６（図中右側）の
冷却水の温度が先に設定値に達すると、上流側の印刷ユ
ニット３の冷却水がＡ方向に流れ込み、全体の冷却水が
圧力損失の少ない流路（上流側のＡ方向の流路）に流れ
込み、下流側のインキ装置５，６に冷却水が流れにくく
なってしまう。In the case of the cooling structure shown in FIG. 5, the temperature of each printing unit 3 can be easily adjusted, but as in the case of FIG. Temperature irregularities easily occur, and dust and the like easily accumulate in the piping. When the temperature of the cooling water of the upstream inking devices 5 and 6 (the right side in the drawing) reaches the set value first, the cooling water of the upstream printing unit 3 flows in the direction A, and the entire cooling water is pressurized. The cooling water flows into the flow path with a small loss (the flow path in the direction A on the upstream side), and it becomes difficult for the cooling water to flow to the ink devices 5 and 6 on the downstream side.
【００１７】[0017]
【課題を解決するための手段】上記課題を解決するため
の本発明の構成は、冷却装置から印刷機のインキ装置に
冷却水を供給する供給配管と、インキ装置から冷却装置
に冷却水を戻す戻り配管と、供給配管と戻り配管を連通
するバイパス配管と、バイパス配管と供給配管の接続部
に設けられ接続部を挟んで供給配管の上流側から下流側
への流量とバイパス配管から供給配管の下流側への流量
とを調節する三方弁と、三方弁とインキ装置の間の供給
配管に設けられるポンプと、戻り配管に設けられる温度
センサと、温度センサの検出状態に応じて三方弁の開度
を変更する制御装置とからなり、制御装置は、冷却水の
温度が予め設定された設定温度より高くなると、供給配
管の上流側から下流側への流量を多くし、かつ、バイパ
ス配管から供給配管下流側への流量が少なくなるように
三方弁の開度を調整し、冷却水の温度が予め設定された
設定温度より低くなると、供給配管の上流側から下流側
への流量を少なくし、かつ、バイパス配管から供給配管
の下流側への流量が多くなるように三方弁の開度を調整
することを特徴とする。According to the present invention, there is provided a supply pipe for supplying cooling water from a cooling device to an inking device of a printing press, and returning cooling water from the inking device to the cooling device. A return pipe, a bypass pipe communicating the supply pipe with the return pipe, and a flow rate from the upstream side to the downstream side of the supply pipe across the connection part provided between the bypass pipe and the supply pipe, and the supply pipe from the bypass pipe. A three-way valve for adjusting the flow rate to the downstream side, a pump provided in the supply pipe between the three-way valve and the inking unit, a temperature sensor provided in the return pipe, and opening of the three-way valve according to the detection state of the temperature sensor. Ri Do and a control unit for changing the degree, the control device of the cooling water
When the temperature rises above a preset temperature, the supply
Increase the flow rate from upstream to downstream of the pipe, and
So that the flow rate from the supply pipe to the downstream side of the supply pipe decreases.
Adjust the opening of the three-way valve, the temperature of the cooling water is set in advance
When the temperature is lower than the set temperature, the upstream side to the downstream side of the supply pipe
Flow from the bypass pipe to the supply pipe
Adjust the opening of the three-way valve so that the flow rate to the downstream side of the valve increases.
Characterized in that it.
【００１８】[0018]
【作用】インキ装置への冷却水の供給は、供給配管を経
て行なわれ、冷却後の冷却水は戻り配管から戻される。
温度センサにより戻り側の冷却水温が設定値まで下がっ
たことが検知されると、制御装置による三方弁の開閉に
より供給配管の上流側から下流側に流れる冷却水量を減
らすと共にバイパス配管側から供給配管の下流側に流れ
る冷却水量を増加させ、ポンプの駆動により冷却水をイ
ンキ装置、戻り配管及びバイパス配管を循環させる。The cooling water is supplied to the inking unit through a supply pipe, and the cooled water is returned from the return pipe.
When the temperature sensor detects that the cooling water temperature on the return side has fallen to the set value, the control device opens and closes the three-way valve to reduce the amount of cooling water flowing from the upstream side to the downstream side of the supply pipe and to supply the supply pipe from the bypass pipe side. The amount of cooling water flowing downstream is increased, and the cooling water is circulated through the inking device, the return pipe, and the bypass pipe by driving the pump.
【００１９】[0019]
【実施例】図１には本発明の一実施例に係る冷却構造の
冷却水系路を示してある。FIG. 1 shows a cooling water passage of a cooling structure according to an embodiment of the present invention.
【００２０】インキ装置４１，４２のインキローラ群の
うち、特定の１つまたは複数のローラは、図３で示した
冷却ローラ１１となり、導入管１２の一端には供給配管
４３が連結され、中空部１１ａに供給された冷却水は戻
り配管４４に排出される。尚、上下のインキ装置４１，
４２のそれぞれに供給配管４３及び戻り配管４４を連結
したが、上下のインキ装置４１，４２の供給配管４３と
戻り配管４４を共用しても良い。One or a plurality of specific rollers of the ink rollers of the inking units 41 and 42 are the cooling roller 11 shown in FIG. 3, and a supply pipe 43 is connected to one end of the introduction pipe 12 so as to be hollow. The cooling water supplied to the section 11a is discharged to the return pipe 44. The upper and lower ink devices 41,
Although the supply pipe 43 and the return pipe 44 are connected to each of the 42, the supply pipe 43 and the return pipe 44 of the upper and lower inking devices 41 and 42 may be shared.
【００２１】供給配管４３及び戻り配管４４は供給管４
５及び戻り管４６を介して冷却装置４７に連結されてい
る。供給管４５には元ポンプ４８が設けられ、元ポンプ
４８によって冷却水が送られる。The supply pipe 43 and the return pipe 44 are connected to the supply pipe 4.
5 and a cooling pipe 47 via a return pipe 46. A supply pump 48 is provided in the supply pipe 45, and cooling water is sent by the supply pump 48.
【００２２】供給配管４３と戻り配管４４はバイパス配
管４９で連通され、バイパス配管４９と供給配管４３の
接続部には三方弁５０が設けられている。三方弁５０
は、三方弁５０を挟んで供給配管４３の上流側４３ａか
ら下流側４３ｂへの冷却水の流量を調整すると共に、バ
イパス配管４９から供給配管４３の下流側４３ｂへの冷
却水の流量を調節する。The supply pipe 43 and the return pipe 44 communicate with each other via a bypass pipe 49, and a three-way valve 50 is provided at a connection portion between the bypass pipe 49 and the supply pipe 43. Three-way valve 50
Adjusts the flow rate of the cooling water from the upstream side 43a to the downstream side 43b of the supply pipe 43 with the three-way valve 50 interposed therebetween, and adjusts the flow rate of the cooling water from the bypass pipe 49 to the downstream side 43b of the supply pipe 43. .
【００２３】戻り配管４４には温度センサ５１が設けら
れ、温度センサ５１によりインキ装置４１，４２の冷却
ローラ１１から排出された冷却水の温度が検出される。
温度センサ５１で検出された温度に基づいて、制御装置
５２により三方弁５０の開度が変更される。供給配管４
３の下流側４３ｂにはポンプとしての循環ポンプ５３が
設けられ、循環ポンプ５３により冷却水は供給配管４３
の下流側４３ｂ、インキ装置４１，４２、戻り配管４４
及びバイパス配管４９を循環する（図中Ｃで示す）。循
環ポンプ５３の吐出圧は元ポンプ４８の吐出圧より低く
設定されている。A temperature sensor 51 is provided in the return pipe 44, and the temperature sensor 51 detects the temperature of the cooling water discharged from the cooling rollers 11 of the inking devices 41 and 42.
The opening of the three-way valve 50 is changed by the control device 52 based on the temperature detected by the temperature sensor 51. Supply piping 4
A circulating pump 53 is provided on the downstream side 43b of the pump 3 as a pump.
Downstream side 43b, inking devices 41 and 42, return pipe 44
And circulates in a bypass pipe 49 (shown by C in the figure). The discharge pressure of the circulation pump 53 is set lower than the discharge pressure of the main pump 48.
【００２４】印刷機の運転中、元ポンプ４８の駆動によ
り冷却水は冷却装置４７から供給管４５、供給配管４３
を経てインキ装置４１，４２（冷却ローラ１１）に送ら
れ（Ｄ方向）、戻り配管４４に排出されて戻り管４６か
ら冷却装置４７に戻る。また、循環ポンプ５３の駆動に
より冷却水はＣ方向に循環する。供給配管４３の上流側
４３ａから下流側４３ｂに流れ込むＤ方向の冷却水の流
量は、三方弁５０の開度によって調節される。During the operation of the printing press, the cooling water is supplied from the cooling device 47 to the supply pipe 45 and the supply pipe 43 by driving the main pump 48.
Are sent to the inking devices 41 and 42 (cooling roller 11) (direction D), discharged to the return pipe 44 and returned to the cooling device 47 from the return pipe 46. The cooling water is circulated in the direction C by driving the circulation pump 53. The flow rate of the cooling water in the direction D flowing from the upstream side 43a to the downstream side 43b of the supply pipe 43 is adjusted by the opening of the three-way valve 50.
【００２５】温度センサ５１により冷却水の温度を検出
し、冷却水の温度が設定値より高くなると、即ちインキ
装置４１，４２の温度が高くなると、制御装置５２によ
りＤ方向の冷却水の流量を多くし、かつバイパス配管４
９から供給配管４３の下流側４３ｂに流れ込む冷却水の
流量を少なくするように三方弁５０の開度を調節し、イ
ンキ装置４１，４２の冷却ローラ１１に供給される冷却
水の流量を一定にする。The temperature of the cooling water is detected by the temperature sensor 51. When the temperature of the cooling water becomes higher than a set value, that is, when the temperatures of the inking devices 41 and 42 become higher, the flow rate of the cooling water in the direction D is controlled by the controller 52. Increase and bypass pipe 4
The opening of the three-way valve 50 is adjusted so as to reduce the flow rate of the cooling water flowing from 9 into the downstream side 43b of the supply pipe 43, and the flow rate of the cooling water supplied to the cooling rollers 11 of the inking devices 41 and 42 is kept constant. I do.
【００２６】温度センサ５１により冷却水の温度を検出
し、冷却水の温度と設定値との温度差が小さくなると、
即ちインキ装置４１，４２の温度が低くなると、制御装
置５２によりＤ方向の冷却水の流量を少なくし、かつバ
イパス配管４９から供給配管４３の下流側４３ｂに流れ
込む冷却水の流量を多くするように三方弁５０の開度を
調節し、インキ装置４１，４２の冷却ローラ１１に供給
される冷却水の流量を一定にする。The temperature of the cooling water is detected by the temperature sensor 51, and when the temperature difference between the temperature of the cooling water and the set value becomes small,
That is, when the temperature of the inking devices 41 and 42 decreases, the flow rate of the cooling water in the D direction is reduced by the control device 52 and the flow rate of the cooling water flowing from the bypass pipe 49 to the downstream side 43b of the supply pipe 43 is increased. The opening degree of the three-way valve 50 is adjusted to make the flow rate of the cooling water supplied to the cooling rollers 11 of the inking devices 41 and 42 constant.
【００２７】これにより、インキ装置４１，４２の温度
変化（上昇）を抑え、インキの性質変化を防止すること
ができる。As a result, the temperature change (rise) of the ink devices 41 and 42 can be suppressed, and the change in the properties of the ink can be prevented.
【００２８】上述した冷却構造によると、循環ポンプ５
３によって冷却水を循環させているので、インキ装置４
１，４２の温度が低くなって冷却装置１１からの冷却水
量が減っても、冷却水を一定の流量で循環させることが
でき、温度ムラがなくなり温度の追従性が良くなる。ま
た、冷却装置１１より供給される冷却水の流量の調整は
供給配管４３の上流側４３ａから供給配管４３の下流側
４３ｂへの流れを絞るとともにバイパス配管４９から供
給配管４３の下流側４３ｂへの流れを多くするようにし
て循環ポンプ５３によりインキ装置４１，４２に一定の
流量の冷却水が流れ込むようにして行なっているため、
三方弁５０の開度が異なってもインキ装置４１，４２に
圧力変動がなく、冷却水が特定のインキ装置４１，４２
に流れ込むことがない。また、循環ポンプ５３を設けた
ので、冷却装置４７及び元ポンプ４８の小型化が図れ
る。According to the cooling structure described above, the circulation pump 5
3, the cooling water is circulated,
Even if the temperatures of the cooling waters 1 and 42 decrease and the amount of cooling water from the cooling device 11 decreases, the cooling water can be circulated at a constant flow rate, and there is no temperature unevenness, and the followability of the temperature is improved. Adjustment of the flow rate of the cooling water supplied from the cooling device 11 restricts the flow from the upstream side 43a of the supply pipe 43 to the downstream side 43b of the supply pipe 43 and adjusts the flow rate from the bypass pipe 49 to the downstream side 43b of the supply pipe 43. Since a constant flow of cooling water flows into the inking units 41 and 42 by the circulation pump 53 so as to increase the flow,
Even if the opening degree of the three-way valve 50 is different, there is no pressure fluctuation in the inking units 41 and 42, and the cooling water is supplied to the specific inking units 41 and 42.
Never flow into Further, since the circulation pump 53 is provided, the cooling device 47 and the main pump 48 can be reduced in size.
【００２９】[0029]
【発明の効果】本発明のインキ装置の冷却構造は、イン
キ装置内の冷却水の流量が一定となって、温度ムラ及び
配管内のゴミ詰りがなくなると共に温度の追従性が良く
なる。また、冷却水が特定のインキ装置に流れ込むこと
がなくなり、冷却を確実に行なうことができる。この結
果、インキ装置の温度調節を容易且つ短時間に行なうこ
とができる。特に本発明を水なし印刷機に適用すること
で優位性を発揮することができる。According to the cooling structure of the inking device of the present invention, the flow rate of the cooling water in the inking device is kept constant, thereby eliminating temperature unevenness and dust clogging in the piping, and improving the temperature followability. In addition, cooling water does not flow into a specific inking device, and cooling can be performed reliably. As a result, the temperature of the inking unit can be easily adjusted in a short time. In particular, when the present invention is applied to a waterless printing press, superiority can be exhibited.
【図１】本発明の一実施例に係る冷却構造の冷却水系路
図。FIG. 1 is a cooling water system diagram of a cooling structure according to one embodiment of the present invention.
【図２】印刷ユニットの構成説明図。FIG. 2 is a diagram illustrating a configuration of a printing unit.
【図３】冷却ローラの断面図。FIG. 3 is a sectional view of a cooling roller.
【図４】従来の冷却構造の冷却水系路図。FIG. 4 is a cooling water system diagram of a conventional cooling structure.
【図５】従来の冷却構造の冷却水系路図。FIG. 5 is a cooling water path diagram of a conventional cooling structure.
４１，４２ インキ装置 ４３ 供給配管 ４３ａ 上流側 ４３ｂ 下流側 ４４ 戻り配管 ４５ 供給管 ４６ 戻り管 ４７ 冷却装置 ４８ 元ポンプ ４９ バイパス配管 ５０ 三方弁 ５１ 温度センサ ５２ 制御装置 ５３ 循環ポンプ 41, 42 Ink unit 43 Supply pipe 43a Upstream side 43b Downstream side 44 Return pipe 45 Supply pipe 46 Return pipe 47 Cooling device 48 Main pump 49 Bypass pipe 50 Three-way valve 51 Temperature sensor 52 Control device 53 Circulation pump
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−63135（ＪＰ，Ａ) 実開 平４−117753（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B41F 31/02 B41F 31/26 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-63135 (JP, A) JP-A-4-1177753 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B41F 31/02 B41F 31/26
Claims (1)
水を供給する供給配管と、インキ装置から冷却装置に冷
却水を戻す戻り配管と、供給配管と戻り配管を連通する
バイパス配管と、バイパス配管と供給配管の接続部に設
けられ接続部を挟んで供給配管の上流側から下流側への
流量とバイパス配管から供給配管の下流側への流量とを
調節する三方弁と、三方弁とインキ装置の間の供給配管
に設けられるポンプと、戻り配管に設けられる温度セン
サと、温度センサの検出状態に応じて三方弁の開度を変
更する制御装置とからなり、 制御装置は、 冷却水の温度が予め設定された設定温度より高くなる
と、供給配管の上流側から下流側への流量を多くし、か
つ、バイパス配管から供給配管下流側への流量が少なく
なるように三方弁の開度を調整し、 冷却水の温度が予め設定された設定温度より低くなる
と、供給配管の上流側から下流側への流量を少なくし、
かつ、バイパス配管から供給配管の下流側への流量が多
くなるように三方弁の開度を調整する ことを特徴とする
インキ装置の冷却構造。1. A supply pipe for supplying cooling water from a cooling device to an inking device of a printing press, a return pipe for returning cooling water from the inking device to the cooling device, a bypass piping for connecting the supply piping and the return piping, and a bypass. and a three-way valve for adjusting the flow rate to the downstream side of the supply pipe the pipe from the upstream side of the provided connection of the supply pipe supply pipe across the connecting portion from the flow rate and the bypass pipe to the downstream side, the three-way valve and an ink a pump provided in the supply pipe between the device and the temperature sensor disposed in the return pipe, Ri Do and a control unit for changing the degree of opening of the three-way valve in accordance with the detection state of the temperature sensor, controller, cooling water Temperature becomes higher than the preset temperature
And increase the flow rate from the upstream side to the downstream side of the supply pipe.
The flow rate from the bypass pipe to the downstream of the supply pipe is small.
Adjust the opening of the three-way valve so that the temperature of the cooling water becomes lower than the preset temperature
And reduce the flow from the upstream side of the supply pipe to the downstream side,
Also, the flow rate from the bypass pipe to the downstream
A cooling structure for an inking device, characterized in that the opening of a three-way valve is adjusted so as to reduce the number of openings .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13712593A JP3347398B2 (en) | 1993-06-08 | 1993-06-08 | Ink unit cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13712593A JP3347398B2 (en) | 1993-06-08 | 1993-06-08 | Ink unit cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06344538A JPH06344538A (en) | 1994-12-20 |
| JP3347398B2 true JP3347398B2 (en) | 2002-11-20 |
Family
ID=15191409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13712593A Expired - Lifetime JP3347398B2 (en) | 1993-06-08 | 1993-06-08 | Ink unit cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3347398B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842644A (en) * | 2015-05-27 | 2015-08-19 | 西安科技大学 | Offset printer ink roller energy-saving cooling system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4412447B2 (en) | 2001-05-29 | 2010-02-10 | 東洋製罐株式会社 | Temperature control method and apparatus for printing press |
| DE102015202183A1 (en) * | 2015-02-06 | 2016-08-11 | Koenig & Bauer Ag | Temperature control unit for temperature control of functional parts of a printing press and printing system with a printing press and a temperature control unit |
-
1993
- 1993-06-08 JP JP13712593A patent/JP3347398B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842644A (en) * | 2015-05-27 | 2015-08-19 | 西安科技大学 | Offset printer ink roller energy-saving cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06344538A (en) | 1994-12-20 |
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