JPH04157040A - Instrument for testing liquid leakage for metallic mold - Google Patents
Instrument for testing liquid leakage for metallic moldInfo
- Publication number
- JPH04157040A JPH04157040A JP27805090A JP27805090A JPH04157040A JP H04157040 A JPH04157040 A JP H04157040A JP 27805090 A JP27805090 A JP 27805090A JP 27805090 A JP27805090 A JP 27805090A JP H04157040 A JPH04157040 A JP H04157040A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- mold
- pressure
- metallic mold
- valve
- 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
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 111
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 238000005422 blasting Methods 0.000 abstract 3
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000011293 Brassica napus Nutrition 0.000 description 1
- 240000008100 Brassica rapa Species 0.000 description 1
- 235000000540 Brassica rapa subsp rapa Nutrition 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、例えば金型内部の冷却水通路に液圧を作用さ
せ、注入液の漏れの有無から合否判定を自動的に行なう
金型液漏れ試験装置に関する。[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) The present invention applies hydraulic pressure to a cooling water passage inside a mold, and automatically makes a pass/fail judgment based on the presence or absence of leakage of injection fluid. This invention relates to a mold liquid leakage testing device.
（従来の技術）
一般に、冷却水通路を備えた金型の合否判定はその金型
の冷却水通路に外から液を注入し、規定の液圧を作用さ
せて液漏れが起こるか否かを検査する液漏れ試験装置を
用いて行なわれる。この装置を使用する方法では液漏れ
試験装置の液槽に溜められた注入液（例えば水）を昇圧
ポンプで昇圧し、これを検査する金型に注入して規定の
液圧を一定時間作用させる手順が欠かせないが、これら
の作業は最後に行なわれる液漏れの観察を含めてすべて
人手を介さなければならない。すなわち、液漏れ試験装
置の注入液を溜めた液槽まで金型を運搬し、その液槽と
金型とを導管で結び、さらに管路に備えられる弁類を操
作して液圧を作用させ、最終的に液漏れの有無を見極め
るまで作業員はそれに掛りきりとなる。なお、試験終了
後に金型に注入された液は抜かれるが、冷却水通路には
微量の液滴が内部に残され、この液滴が乾燥するまで若
干の時間を必要とする。(Prior art) Generally, to judge whether a mold with a cooling water passage is acceptable or not, liquid is injected from the outside into the cooling water passage of the mold, and a specified liquid pressure is applied to check whether liquid leaks. This is done using a liquid leak test device. In the method of using this device, the pressure of the injection liquid (e.g., water) stored in the liquid tank of the liquid leak test device is increased using a boost pump, and this is injected into the mold to be inspected, and a specified liquid pressure is applied for a certain period of time. These steps are essential, but all of these tasks, including the final inspection for leaks, must be performed manually. In other words, the mold is transported to the liquid tank containing the injection liquid of the liquid leak test device, the liquid tank and the mold are connected with a conduit, and the valves provided in the conduit are operated to apply liquid pressure. , the workers are left to work on it until they finally determine whether or not there is a leak. Although the liquid injected into the mold is removed after the test, a small amount of liquid droplets remain inside the cooling water passage, and it takes some time for these droplets to dry.
（発明が解決しようとする課題）
上述の液漏れ試験装置による検査では一連の作業が人手
を介さなければなり立たず、検査中、作業員はこれに掛
りきりとなる。金型の製作工程中、機械加工工程はＮＣ
装置に代表される自動機の利用が進み、それなりに省力
の実効は上がっているが、検査工程については未だ人手
に依存する部分が多く残されており、従来の液漏れ試験
装置を使用する限り、省力の効果が上がることは期待で
きず、金型製作工程全体での省力の実効を高めるうえで
隘路となっている。(Problems to be Solved by the Invention) In the inspection using the above-mentioned liquid leakage test device, a series of operations must be performed manually, and the operator is completely occupied with this task during the inspection. During the mold manufacturing process, the machining process is NC
Although the use of automatic machines such as these devices has progressed, and the effectiveness of labor-saving has improved to a certain extent, there are still many parts of the inspection process that are dependent on human labor, and as long as conventional liquid leakage testing equipment is used, However, no improvement in labor-saving effects can be expected, and this is a bottleneck in increasing the effectiveness of labor-saving in the entire mold manufacturing process.
したがって、本発明の目的は人手を介することなしに金
型の液漏れを的確に見極め、金型の合否判定を正確に行
なえるようにした金型液漏れ試験装置を提供することに
ある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a mold liquid leakage testing device that can accurately determine liquid leakage from a mold without manual intervention and accurately determine whether or not the mold is acceptable.
ｒ発明の構成］
（課題を解決するための手段）
本発明に係る金型液漏れ試験装置は、金型への注入液を
溜めておく液槽と、この液槽から金型にかけて注入液を
送る昇圧ポンプおよび第１の液圧保持用弁を備えた導管
をもって構成される給液経路と、金型から液槽にかけて
注入液を還流させる第２の液圧保持用弁を有する導管を
もって構成される排液経路と、給液経路に結ばれた温風
装置と、昇圧ポンプ、第１および第２の液圧保持用弁お
よび温風装置を決められた順序で制御する制御装置から
構成したものである。rStructure of the Invention] (Means for Solving the Problems) The mold liquid leakage testing device according to the present invention includes a liquid tank for storing liquid to be injected into the mold, and a liquid tank for discharging the injection liquid from the liquid tank to the mold. A liquid supply path is composed of a conduit equipped with a booster pump and a first liquid pressure maintenance valve, and a conduit has a second liquid pressure maintenance valve that recirculates the injected liquid from the mold to the liquid tank. This system consists of a liquid drainage path connected to the liquid supply path, a hot air device connected to the liquid supply path, and a control device that controls the boost pump, first and second hydraulic pressure maintenance valves, and the hot air device in a predetermined order. It is.
また、制御装置は金型の冷却水通路に作用させた液圧の
降下から液漏れの有無を自動的に判定する手段を備えた
ものである。Further, the control device is provided with means for automatically determining whether there is a liquid leakage based on a drop in the liquid pressure applied to the cooling water passage of the mold.
（作用）
昇圧ポンプで注入液を昇圧して金型に注入し、給液経路
および排液経路を含む全領域に液圧を作用させる。規定
圧力になった時点で第１および第２の液圧保持用弁を閉
じて昇圧ポンプの運転を停止させる。双方の弁を閉じた
時点から時間を計り、決められた時間内に液漏れが起こ
らないことが見極められたならば合格と判定する。(Function) The injection liquid is pressurized by a boost pump and injected into the mold, and liquid pressure is applied to the entire area including the liquid supply route and the liquid drainage route. When the pressure reaches the specified level, the first and second hydraulic pressure holding valves are closed to stop the operation of the boost pump. The time is measured from the time both valves are closed, and if it is determined that no liquid leakage occurs within the predetermined time, the test is judged to have passed.
その後、第２の液圧保持用弁を全開して注入液を液槽に
逃がし、さらに温風装置を働がせて金型内部に残された
液滴を蒸発させる。これらの制御は制御装置から出力さ
れる信号により自動的に行なわれる。Thereafter, the second hydraulic pressure holding valve is fully opened to release the injection liquid into the liquid tank, and the hot air device is further activated to evaporate the liquid droplets left inside the mold. These controls are automatically performed by signals output from the control device.
（実施例）
以下、本発明の一実施例をＭ１図および第２因を参照し
て説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the M1 diagram and the second factor.
′！ｓ１図において、符号１は注入液、例えば水を溜め
ておく液槽を示しており、この液槽１には金型２の冷却
水通路と結ばれたリード管３に至る導管４が接続され、
また、金型２の冷却水通路と結ばれたドレン管５から液
槽１にかけて導管６が接続され、給液経路および排液経
路がそれぞれ構成される。この導管４には液槽１側から
フート弁７、昇圧ポンプ８、電磁弁９、逆止弁１ｏおよ
び止め弁１１が順次設けられ、また導管６には金型２側
からフロースイッチ１２、電磁弁１３および止め弁１４
が順次設けられる。′! In Figure s1, reference numeral 1 indicates a liquid tank for storing an injection liquid, for example, water, and a conduit 4 leading to a lead pipe 3 connected to a cooling water passage of a mold 2 is connected to this liquid tank 1. ,
Further, a conduit 6 is connected from a drain pipe 5 connected to the cooling water passage of the mold 2 to the liquid tank 1, thereby forming a liquid supply path and a liquid drainage path, respectively. This conduit 4 is provided with a foot valve 7, a boost pump 8, a solenoid valve 9, a check valve 1o, and a stop valve 11 in this order from the liquid tank 1 side, and a flow switch 12 and an electromagnetic valve are provided in the conduit 6 from the mold 2 side. Valve 13 and stop valve 14
will be established sequentially.
さらに、金型２に対して温風を送る全体を符号１５で示
す温風装置が設けられる。この温風装置１５はモータ１
６、空気圧縮機１７およびヒータ１８とから構成され、
外気を空気圧縮機１７に導いて加圧し、これをヒータ１
８に導入して所定温度に高めて後、金型２に供給するも
のである。この温風装置１５と導管４とは空気管１９に
より結ばれ、給液経路を介して金型２に至る温風送給経
路が構成される。Further, a hot air device, generally designated by reference numeral 15, for sending hot air to the mold 2 is provided. This hot air device 15 is powered by a motor 1.
6. Consisting of an air compressor 17 and a heater 18,
The outside air is led to the air compressor 17 and pressurized, and this is sent to the heater 1.
8 and raised to a predetermined temperature, then supplied to the mold 2. The hot air device 15 and the conduit 4 are connected by an air pipe 19, forming a hot air supply path that reaches the mold 2 via the liquid supply path.
また、導管４には電磁弁９から先の給液経路がらリード
管３を経て金型２に至る領域の液圧を検出する圧カドラ
ンスミッタ２０が、さらに導管６には金型２からドレン
管５を経て電磁弁１３までの排液経路の液圧を検出する
圧カドランスミッタ２１がそれぞれ設けられる。In addition, the conduit 4 is equipped with a pressure quadrature transmitter 20 that detects the liquid pressure in the area from the electromagnetic valve 9 to the liquid supply route through the lead pipe 3 to the mold 2, and the conduit 6 is equipped with a pressure fluid transmitter 20 for detecting the liquid pressure in the area from the solenoid valve 9 to the mold 2 via the lead pipe 3. A pressure quadrature transmitter 21 is provided for detecting the liquid pressure in the drainage path via the pipe 5 to the electromagnetic valve 13.
一方、符号２２は制御装置を示しており、この制御装置
２２は後記の液漏れ試験装置の制御を行なうために昇圧
ポンプ８、電磁弁９．１３、フロースイッチ１２、モー
タ１６、ヒータ１８および圧力計２０．２１とそれぞれ
接続される。On the other hand, reference numeral 22 indicates a control device, and this control device 22 controls a boost pump 8, a solenoid valve 9.13, a flow switch 12, a motor 16, a heater 18, and a pressure A total of 20.21 are connected respectively.
また、上記した構成のうち、液槽１、導管４．６空気管
１９には取扱いをより容易に、しかも安全性を確保する
幾つかの手段が設けられる。液面計２３は液槽］の液位
の検出を可能にする。さらにドレン弁２４は液槽１から
の廃液の処理を容易にするものである。導管４．６と、
リード管３およびドレン管５との接続部に設けられるカ
ブラ２５．２６は双方の経路の接続、切離しの便を考慮
したものである。また、リリーフ弁２７．２８は双方の
経路の液圧が異常に上昇したときに液を液槽１に逃がす
ために設けられる。空気管１９の経路にある逆止弁２９
は水などの流体が空気圧縮機１７に流入するのを阻止す
るものである。In addition, among the above-mentioned configurations, the liquid tank 1, the conduits 4, 6, and the air pipe 19 are provided with several means to make handling easier and to ensure safety. The liquid level gauge 23 makes it possible to detect the liquid level in the liquid tank. Furthermore, the drain valve 24 facilitates the disposal of waste liquid from the liquid tank 1. conduit 4.6;
The coverlets 25 and 26 provided at the connection portions with the lead pipe 3 and the drain pipe 5 are designed to facilitate connection and disconnection of both paths. Furthermore, relief valves 27 and 28 are provided to release the liquid to the liquid tank 1 when the liquid pressures in both routes rise abnormally. Check valve 29 in the path of air pipe 19
prevents fluid such as water from flowing into the air compressor 17.
一方、第２図は温風装置１５のヒータ１８部の具体的な
実施例を示すもので、電源と接続可能なヒータ１８は空
気管１９の内部に収容され、そこを通過する空気がヒー
タ１８によって加熱されるようになっている。On the other hand, FIG. 2 shows a specific embodiment of the heater 18 section of the hot air device 15. The heater 18, which can be connected to a power source, is housed inside an air pipe 19, and the air passing therethrough is connected to the heater 18. It is heated by
次に、上記構成によるところの作用を説明する。Next, the effect of the above configuration will be explained.
台車に載せられた液漏れ試験装置が金型２の組立てを完
了したショップ内の所定位置に運ばれ、作業員の手てリ
ード管３と導管４とがカブラ２５によって、またドレン
管５と導管６とがカブラ２６によって各々結ばれる。次
に、制御装置２２からのリセット信号によって電磁弁９
か全開され、電磁弁１３は全閉される。ここで、昇圧ポ
ンプ８に対する起動信号により液槽１内に溜められた注
入液が汲み上げられ、初めに導管４の全域が、次に金型
２の冷却水通路が、最後に導管６の電磁弁１３までの領
域が満たされる。金型２を間に互いに連通された双方の
導管４．６内の液圧は圧カドランスミッタ２０．２１に
よって検出され、予め設定された圧力値に到達すると、
圧カドランスミッタ２０．２１からの信号で制御装置２
２から昇圧ポンプ８の停止信号が出力され、同時に、リ
セット信号で開かれた電磁弁９が全閉される。The liquid leak test device mounted on a trolley is carried to a predetermined position in the shop where the mold 2 has been assembled, and the worker manually connects the lead pipe 3 and the conduit 4 with the cover 25, and also connects the drain pipe 5 and the conduit with each other. 6 are connected by turnips 26, respectively. Next, the solenoid valve 9 is activated by a reset signal from the control device 22.
is fully opened, and the solenoid valve 13 is fully closed. Here, the injection liquid stored in the liquid tank 1 is pumped up by a start signal to the boost pump 8, first the entire area of the conduit 4, then the cooling water passage of the mold 2, and finally the solenoid valve of the conduit 6. Areas up to 13 are filled. The hydraulic pressure in both conduits 4.6 communicating with each other across the mold 2 is detected by a pressure quadrature transmitter 20.21, and when a preset pressure value is reached,
The control device 2 receives signals from the pressure quadrature transmitters 20 and 21.
2 outputs a stop signal for the boost pump 8, and at the same time, the solenoid valve 9, which was opened by the reset signal, is fully closed.
この規定圧力に保たれる状態で制御装置２２内のタイマ
回路が時間を刻み始め、決められた時間がくるまで、そ
のままの状態で据え置かれる。規定圧力を保ったままタ
イマ回路の設定時間が経過したとき、電磁弁１３を開動
作させる制御信号がタイマ回路切と連動して出力され、
電磁弁１３が全開される。これにより液が導管６を通し
て液槽１に排出される。この液抜きは制御装置２２内の
タイマ回路からの信号か続く間継続され、設定時間が経
過したときに液抜きが終了する。A timer circuit within the control device 22 starts ticking while the specified pressure is maintained, and remains in that state until the predetermined time comes. When the set time of the timer circuit has elapsed while maintaining the specified pressure, a control signal to open the solenoid valve 13 is output in conjunction with the timer circuit cutoff.
The solenoid valve 13 is fully opened. The liquid is thereby discharged through the conduit 6 into the liquid tank 1. This liquid draining continues as long as the signal from the timer circuit in the control device 22 continues, and the liquid draining ends when the set time has elapsed.
液抜き終了と同時に、温風装置１５に対する起動信号か
タイマ回路切と連動して出力され、モータ１６が始動し
て空気圧縮機１７によって圧縮された空気が空気管１９
内を流れ始め、同じ起動信号によって始動したヒータ１
８により暖められる。Simultaneously with the completion of liquid removal, a start signal to the hot air device 15 is output in conjunction with the timer circuit cutoff, the motor 16 is started, and the air compressed by the air compressor 17 is transferred to the air pipe 19.
Heater 1 started flowing inside and started by the same start signal.
It is warmed by 8.
この温度上昇した・空気は空気管１９から導管４へ、さ
らに金型２へと流れ、液抜き時に液滴となって残った液
を加熱してこれを蒸発させる。この温風装置１５による
金型２の乾燥も制御装置２２内のタイマ回路からの信号
が続く間、継続され、設定時間が経過したときに乾燥が
終了する。This air whose temperature has increased flows from the air pipe 19 to the conduit 4 and further to the mold 2, heats the liquid remaining in droplets during liquid removal, and evaporates it. The drying of the mold 2 by the hot air device 15 continues as long as the signal from the timer circuit in the control device 22 continues, and the drying ends when the set time has elapsed.
以上の手順をタイムチャートに表すと、第３図に示すよ
うになる。昇圧ポンプの始動（ｔｌ）で液圧が上昇し、
規定圧力に到達したとき（ｔ２）に液圧保持用タイマ回
路が入り、この回路が切れた時（ｔ３）液抜き用タイマ
回路が入り、この回路か切れた時（ｔ４）乾燥用タイマ
回路が入り、この回路が切れた時（ｔ５）乾燥が終了す
る。以上はすべて自動的に進む。If the above procedure is represented in a time chart, it will be as shown in FIG. When the boost pump starts (tl), the fluid pressure increases,
When the specified pressure is reached (t2), the timer circuit for maintaining liquid pressure is turned on, when this circuit is cut off (t3), the timer circuit for draining liquid is turned on, and when this circuit is cut off (t4), the timer circuit for drying is turned on. When this circuit is cut off (t5), drying ends. All of the above will proceed automatically.
ちなみに、金型２に液漏れが発生した時、圧カドランス
ミッタ２０．２１からの出力信号が切れ、液圧低下を知
らせる警報信号が出力されると共に、液圧保持用タイマ
回路が切れて自動運転は停止される。By the way, when a liquid leak occurs in the mold 2, the output signal from the pressure quadrature transmitter 20, 21 is cut off, an alarm signal is output to notify of a drop in liquid pressure, and the timer circuit for maintaining liquid pressure is cut off, automatically Operation will be stopped.
かくして、金型２の液漏れを検査する一連の作業で人手
を介するのはカブラ２５．２６の接続など極く一部であ
って、大幅な省力を達成することができ、しかも的確に
液漏れの有無を見極め、金型の合否判定を行なうことが
可能である。In this way, only a small part of the process of inspecting the mold 2 for liquid leakage requires human intervention, such as connecting the coverlets 25 and 26, making it possible to achieve significant labor savings and to accurately detect liquid leaks. It is possible to determine whether the mold is acceptable or not by determining the presence or absence of the mold.
［発明の効果］
以上説明したように本発明に係る金型液漏れ試験装置に
よれば、金型液漏れ試験装置との接続など、極く一部に
人手を介するのみで、液漏れの合否判定か可能であり、
金型の液漏れ試験における省力が達成されるという優れ
た効果を奏する。[Effects of the Invention] As explained above, according to the mold liquid leakage testing device according to the present invention, it is possible to determine whether or not liquid leakage has occurred by only requiring human intervention in a very small part such as connection with the molding liquid leakage testing device. It is possible to judge
This has the excellent effect of saving labor in liquid leakage testing of molds.
第１図は本発明による金型液漏れ試験装置の一実施例を
示す構成図、第２図は本発明に係る温風装置の一例を示
す斜視図、第３図は本発明の手順に従う場合のタイムチ
ャートである。
１・・・・・・・・液槽
２・・・・・・・・・金型
４．６・・・導管
８・・・・・・・・・昇圧ポンプ
９．１３・・・電磁弁
１７・・・・・・・・・空気圧縮機
１８・・・・・・・・ヒータ
２０．２１・・・圧カドランスミッタ
２２・・・・・・・・・制御装置Fig. 1 is a configuration diagram showing an example of a mold liquid leakage test device according to the present invention, Fig. 2 is a perspective view showing an example of a hot air device according to the present invention, and Fig. 3 is a case in which the procedure of the present invention is followed. This is a time chart. 1...Liquid tank 2...Mold 4.6...Conduit 8...Boost pump 9.13...Solenoid valve 17... Air compressor 18... Heater 20.21... Pressure quadrature transmitter 22... Control device
Claims (2)
ら前記金型にかけて注入液を送る昇圧ポンプおよび第１
の液圧保持用弁を備えた導管をもって構成される給液経
路と、前記金型から前記液槽にかけて注入液を還流させ
る第２の液圧保持用弁を有する導管をもって構成される
排液経路と、前記給液経路に結ばれた温風装置と、前記
昇圧ポンプ、前記第１および第２の液圧保持用弁および
前記温風装置を決められた順序で制御する制御装置とを
具備してなる金型液漏れ試験装置。(1) A liquid tank that stores the injection liquid to the mold, a booster pump that sends the injection liquid from this liquid tank to the mold, and a first pump.
a liquid supply path configured with a conduit equipped with a hydraulic pressure maintenance valve; and a liquid drainage path configured with a conduit equipped with a second hydraulic pressure maintenance valve that recirculates the injection liquid from the mold to the liquid tank. and a hot air device connected to the liquid supply path, and a control device that controls the boost pump, the first and second hydraulic pressure maintenance valves, and the hot air device in a predetermined order. Mold liquid leakage testing equipment.
た液圧の降下から液漏れの有無を自動的に判定する手段
を備えることを特徴とする請求項１記載の金型液漏れ試
験装置。(2) The mold fluid leakage according to claim 1, wherein the control device includes means for automatically determining the presence or absence of fluid leakage from a drop in fluid pressure applied to the cooling water passage of the mold. Test equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27805090A JPH04157040A (en) | 1990-10-17 | 1990-10-17 | Instrument for testing liquid leakage for metallic mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27805090A JPH04157040A (en) | 1990-10-17 | 1990-10-17 | Instrument for testing liquid leakage for metallic mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04157040A true JPH04157040A (en) | 1992-05-29 |
Family
ID=17591958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27805090A Pending JPH04157040A (en) | 1990-10-17 | 1990-10-17 | Instrument for testing liquid leakage for metallic mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04157040A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011235330A (en) * | 2010-05-12 | 2011-11-24 | Honda Motor Co Ltd | Casting method |
| JP2012045574A (en) * | 2010-08-26 | 2012-03-08 | Toyama Prefecture | Mold abnormality detecting system |
| JP2018012136A (en) * | 2016-07-22 | 2018-01-25 | リョービ株式会社 | Metal mold cooling device |
| KR102191507B1 (en) * | 2019-09-20 | 2020-12-15 | 한국생산기술연구원 | Mold cooling method and system for low pressure casting |
-
1990
- 1990-10-17 JP JP27805090A patent/JPH04157040A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011235330A (en) * | 2010-05-12 | 2011-11-24 | Honda Motor Co Ltd | Casting method |
| JP2012045574A (en) * | 2010-08-26 | 2012-03-08 | Toyama Prefecture | Mold abnormality detecting system |
| JP2018012136A (en) * | 2016-07-22 | 2018-01-25 | リョービ株式会社 | Metal mold cooling device |
| KR102191507B1 (en) * | 2019-09-20 | 2020-12-15 | 한국생산기술연구원 | Mold cooling method and system for low pressure casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5845225A (en) | Microcomputer controlled engine cleaning system | |
| FI96897B (en) | Device for preventing downtime in a water distribution system | |
| JPH0246108B2 (en) | ||
| SE9000341L (en) | PROCEDURE AND DEVICE FOR MONITORING THE LEAKAGA STELL IN A CONDUCTING SYSTEM FOR FLUIDUM | |
| JPH04157040A (en) | Instrument for testing liquid leakage for metallic mold | |
| US4221124A (en) | Bladder leak and rupture detector | |
| US5417900A (en) | Vacuum leak detector for a tire curing press | |
| US3221539A (en) | Method and apparatus for leak testing castings | |
| CN102933381B (en) | Automatic enveloping surface leak detection during tire curing | |
| JP3414155B2 (en) | Leak tester and leak test method | |
| CN113465840A (en) | Water meter sealing performance detection system and detection method | |
| GB1299018A (en) | Method of sequential leakage testing | |
| US2874566A (en) | Apparatus for testing wall structure of hollow articles | |
| JP3725693B2 (en) | Pipe leakage inspection method and hot water supply system | |
| JP3454406B2 (en) | Leakage and flow rate inspection device | |
| JP2999548B2 (en) | Fluid leak inspection device | |
| US3313143A (en) | Apparatus for leak testing castings | |
| TWM502838U (en) | Pressure drop type airtight leakage inspection device | |
| JP3542086B2 (en) | How to fill natural gas | |
| JPH0116385B2 (en) | ||
| KR200389340Y1 (en) | Impact water pressure testing apparatus for building equipment's pipe laying | |
| JPS6354986B2 (en) | ||
| JP3018960U (en) | Floor heating inspection equipment | |
| JPH0694565A (en) | Leak-of-water inspection device in hot water heating apparatus | |
| JPS5961738A (en) | Leakage test apparatus |