WO1998033612A1 - Apparatus for supplying molten metal at predetermined rate - Google Patents

Apparatus for supplying molten metal at predetermined rate Download PDF

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Publication number
WO1998033612A1
WO1998033612A1 PCT/JP1998/000416 JP9800416W WO9833612A1 WO 1998033612 A1 WO1998033612 A1 WO 1998033612A1 JP 9800416 W JP9800416 W JP 9800416W WO 9833612 A1 WO9833612 A1 WO 9833612A1
Authority
WO
WIPO (PCT)
Prior art keywords
molten metal
pots
hot water
level
valve
Prior art date
Application number
PCT/JP1998/000416
Other languages
French (fr)
Japanese (ja)
Inventor
Syunji Mochizuki
Original Assignee
Tounetsu Co., Ltd.
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
Priority to JP9/21159 priority Critical
Priority to JP2115997 priority
Application filed by Tounetsu Co., Ltd. filed Critical Tounetsu Co., Ltd.
Priority claimed from JP10527550A external-priority patent/JP3017540B2/en
Publication of WO1998033612A1 publication Critical patent/WO1998033612A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00Equipment for supplying molten metal in rations
    • B22D39/06Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal

Abstract

A molten metal supply apparatus provided with a sealed pot (1) having a molten metal supplying port (2) and a molten metal discharging port (3) and disposed in a molten metal retaining furnace (5), a molten metal discharging pipe (7) connected to the molten metal discharging port (3), a pair of valves (8, 38) adapted to be moved vertically in the pot (1) and open and close the molten metal supplying port (2) and a molten metal discharging port (3), a level detecting means (10) for detecting upper and lower limit levels (L1, L2) of a molten metal (6) in the pot (1), and a pressurization and depressurization means (20) for pressurizing the interior of the pot (1) by supplying an inert gas to the interior thereof, or depressurizing the interior of the pot (1) by discharging the inert gas to the atmospheric air or forcibly sucking the inert gas from the pot (1), the molten metal (6) flowing from the molten metal supplying port (2) into the pot (1) being pressurized from the upper limit level (L1) to the lower limit level (L2), whereby the molten metal (6) in the pot (1) being discharged from the molten metal discharging port (3) through the molten metal discharge pipe (7).

Description

Akira fine manual melt dispensing equipment technology field

The present invention, the dissolved Aluminum alloy various other metals are accumulated in the molten metal holding furnace for molten metal in a melting furnace, to an apparatus for quantitative Kyoawase to order to 铸造 machine such as a die calibration scan Tomasi down . BACKGROUND

As a conventional melt supply device, as well as extending the hot water supply pipe connectable from the molten metal holding furnace to 铸造 machine, interposed an electromagnetic pump in the middle of the hot water supply pipe, Ri by this electrostatic 磁Po amplifier, are followed by a molten metal holding furnace was to jar'm pumped to 铸造 machine through the hot water supply pipe.

If by the supply device of Yo I Do electromagnetic pump type described above, when the molten metal is a nonferrous metal such as Aluminum alloys, the magnetic metal components such as iron are mixed in the melt, is that the magnetic metal components cause jams adsorbed inside the electromagnetic pump, liable to malfunction, because even stop Matapo pump can not and immediately stop Mel this flow of the molten metal in the hot water supply pipe, a problem in terms of quantitative capability There was a further cost problem very high suspended rather that of the electromagnetic pump is expensive apparatus.

In view of the above problems, failure rather small, certainly on obtaining row quantitative supply, a purpose that you provide a relatively inexpensive and can be manufactured molten metal dispensing system. Disclosure of the Invention

Melt dispensing apparatus of the invention according to claim 1, having a hot water inlet 2 and the discharge spout 3 to the bottom side, a closed-shaped pop sheet 1 which is arranged at a predetermined height position in the molten metal holding furnace 5, a hot water pipe 7 can be connected are provided continuously to the discharge spout 3 to 铸造 machine M, and the on-off valve 8 for opening and closing the hot water supply port 2 moves up and down the I Ri pop preparative 1 to the opening and closing drive means, pop the upper limit level L 1 and the lower-limit level L 2 level detection means 1 0 for detect the molten metal 6 in the sheet 1, the pop WINCH 1 hardly reacts to metallic melt, such as nitrogen gas or dry air into the gas (hereinafter "inert gas" refers to a) the pop sheet 1 inside a pressurized supply, and a pressure depressurizing means 2 0 for reducing the pressure inside the pop sheet 1 the inert gas this Kyoawase was released into the atmosphere comprising a this that pressurize the molten metal 6 that has flowed into the hot water inlet 2 Karapo Tsu preparative 1 from the upper limit level L 1 to the lower limit level L 2 By one in which the molten metal 6 of Ttepo Tsu door within 1 formed by from the exhaust sprue 3 to jar by the hot water out through its hot water pipe 7.

According to the melt dispensing apparatus of the invention according to claim 1, the pop bets with hot water port 及 beauty discharge spout on the bottom side and disposed at a predetermined height position in the molten metal holding furnace, its hot water inlet Karapo the molten metal that has flowed into Tsu the bets from the upper level to the lower limit level by the this pressurizing Ri by the inert gas, since it is obtained by the power sale by which hot water through hot water pipe molten metal in the pop retrieved from the exhaust sprue since the molten metal of the molten metal holding furnace automatically can reliably and this quantitative supplied to 铸造 machine, also supplying and discharging molten metal I by the pressurizing depressurizing means by use of inert gases, molten metal § Rumi even if the magnetic metal components are mixed in the melt in the case of non-ferrous metals such as alloys, the magnetic metal components rather this Togana that clogging adsorbed into the apparatus, on the fault is small, relatively Ru can be cheaper the costs are inexpensive to manufacture.

Melt dispensing apparatus of the invention according to claim 2 has a hot water inlet 2 and the discharge spout 3 to the bottom side, a closed-shaped pop sheet 1 which is arranged at a predetermined height position in the molten metal holding furnace 5, a hot water pipe 7 can be connected are provided continuously to the discharge spout 3 to 铸造 machine M, on-off valve 8 for opening and closing the hot water inlet 2 and the discharge sprue 3 each vertically moving the pop preparative 1 by respective opening and closing drive means , 3 8 a, pop the upper limit level L 1 and level detection means 1 0 for detecting the lower limit level L 2 of the molten metal 6 bets in one, pots 1 by supplying an inert gas to pop bets 1 internal pressurized, also provided with a pressure vacuum means 4 0 for reducing the pressure inside pots 1 and discharged to the atmosphere of an inert gas in the pots 1, flowing into the pots 1 from the hot water supply port 2 melt 6 that if the upper limit level L 1 lower level L 2 until discharge sprue molten metal 6 in the pots 1 by pressurizing 3 from the Ru Der made so as to hot water through the hot water pipe.

According to claim 2, together with the features a-off valve for opening and closing the discharge spout opening and closing valve for opening and closing the hot water inlet, inside pots opened releasing an inert gas under pressure supplied into the pots to the atmospheric pressure includes a pressurizing pressure reducing means so as to reduce the pressure, when the pressure depressurizing means is introduced into pots a melt of molten metal holding furnace switched to vacuum side from the pressure side, the opening and closing of the exhaust sprue side because making it a waste sprue valve is actuated to be flowing from the hot water inlet while closing the chain molten metal inside pots, it is possible to accurately regulate the inflow of molten metal to the internal pots, this is but repeatedly can and accurately maintain child the volume of the melt teemed per unit from pots for.

Melt dispensing apparatus of the invention according to claim 3 has a hot water inlet 2 and the discharge spout 3 to the bottom side, a closed-shaped pop sheet 1 which is arranged at a predetermined height position in the molten metal holding furnace 5, a hot water pipe 7 can be connected are provided continuously to the discharge spout 3 to 铸造 machine M, on-off valve 8 which moves up and down inside the pots 1 to open and close the hot water inlet 2 and the discharge spout 3 respectively by respective opening and closing drive means, 3 8, the level detection means 1 0 for detecting the upper limit level L 1 and the lower-limit level L 2 of the molten metal 6 in the pots 1, the internal pots 1 by supplying an inert gas to pop bets 1 pressurized, also comprising the pots 1 pressurizing depressurizing means for depressurizing the interior 4 0 to force sucking the inert gas in the pots 1, the molten metal 6 that has flowed into the pots 1 from the hot water supply port 2 thereof leaving the soluble hot water 6 in the pots 1 from the exhaust sprue 3 by pressurizing the upper level L 1 to the lower limit level L 2 According to claim 3 the tube through Ji with those made in the earthenware pots by to tapping, as well as features and closing valve for opening and closing the on-off valve and exhaust sprue for opening and closing the hot water port, pressurized in the pop DOO et al or by forcibly sucking the inert gas pressure supply and a pressurizing depressurizing means you cormorants by depressurizing the internal pop bets, in addition to the effect of claim 1, by pop internal pressurization Thus the tapping of the molten metal, even if molten metal surface level of the molten metal that has been accumulated in the molten metal holding furnace is lowered, it is the this to maintain the upper level of the pop preparative always in a fixed position, this molten metal holding furnace for frequently need to replenish the molten metal rather than name within, along with the operation of supplying molten metal is easy, Ru can and the child that is responsible for accurate quantification supply Ri good.

Claim 4 is have you to melt dispensing apparatus according to any one of claims 1 to 3, the fluid 圧Shi closing drive means is erected on an upper end portion of the pots 1 Li Sunda 9, 3 9 Tona Ri are those formed by linking the piston preparative Nro head 9 a, 3 9 a rod-shaped on-off valve 8, 3 8 of the fluid 圧Shi Li Sunda 9, 3 9.

According to claim 4, as a drive means of the on-off valve, using a fluid 圧Shi re Sunda erected to pop preparative upper portion, since the connecting rod-off valve in the sheet re Sunda, claim 5 that can have a this to simplify the configuration of the opening and closing drive means and co Npaku DOO reduction is have you to melt dispensing apparatus according to any one of claims 1 to 3 pop sheet 1, the opening and closing the valve 8, 3 8 and hot water pipe 7 a is obtained by thus forming the canceller Mi click respectively.

According to claim 5, pop bets, by the this forming Ri by the canceller Mi click-off valve and a hot water pipe, respectively, excellent heat resistance pop bets, this to obtain inexpensive off valve and hot water pipe door is Ru can.

Claim 6 is have you to melt dispensing apparatus according to any one of claims 1 to 3, the sera Mi click made full I Luther 2 6 on the inlet side of the hot water supply port 2 of the pop sheet 1 those mounted.

According to claim 6, by mounting the sera Mi click manufactured Fi le coater to the inlet side of the pop Bok hot water port, oxides mixed in the molten metal of the molten metal holding furnace, dust, and other impurities and can be removed, can it to supply the good quality of the molten metal to 铸造 machine. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a vertical sectional side view showing a molten metal dispensing apparatus according to a first embodiment of the present invention.

Figure 2 is a plan view of a molten metal dispensing apparatus shown in FIG.

Figure 3 is a partially enlarged cross-sectional view of a molten metal dispensing apparatus shown in FIG. Figure 4 is Ru longitudinal side Zudea showing a molten metal supply device according to a second embodiment of the present invention

Figure 5 is a partially enlarged cross-sectional view of a molten metal dispensing apparatus shown in FIG. 6 Ru longitudinal side Zudea showing a molten metal supply device according to the third embodiment of the present invention.

Figure 7 is an enlarged longitudinal sectional view showing an embodiment of a level detecting means. BEST MODE FOR CARRYING OUT THE INVENTION

Figure 1 shows a melt dispensing apparatus according to a first embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a partially enlarged cross-sectional view. The first embodiment is shows the specific example in which Kyoawase the main and to melt made of aluminum alloy 铸造 machine. In these drawings, 1 is a bottomed cylindrical pots having a hot water inlet 2 and the discharge spout 3 to the bottom side, is formed by the canceller Mi click, the pots 1 has an upper end portion 1 a is required It is through supported in a sealed state to support 4 made of a heat-resistant material is suspended downwardly from the lower surface of the support 4, is inserted and arranged at a predetermined height position to open soluble water holding furnace 5. The molten metal holding furnace 5, the metal melting furnace molten alloy 6 of dissolved example Aluminum alloy is almost full to accumulate et al is, Thus pop sheet 1 is immersed in the molten metal 6 Remind as in FIG. 1 the state.

7, the pop sheet 1 of the exhaust sprue 3 to have been continuously provided 铸造 machine (e.g. Daikiya scan Tomasi down) by pouring port tapping pipe connectable to (not shown) of the M, the same Ku as pop sheet 1 be formed Ri by the canceller Mi click, a vertical pipe portion 7 a extending upward along the outer surface of the outer end portion Karapo Tsu Bok 1 exhaust sprue 3, with the upper end of the vertical pipe portion 7 a consists of a Bend portion 7 b that is set is pierced supported by the support body 4, a horizontal pipe portion 7 c extending horizontally are coupled to Konobe down de section 7 b to 铸造 machine M side, a horizontal pipe part 7 c of the distal end portion 7 d is in the jar by being pressed against the pouring port of 铸造 machine M. In addition, although not shown, in the hot water pipe 7 and each other to attach heater one has summer Ni Let 's that can be tapping the molten metal 6 from the pop door 1 at a suitable temperature.

8 is a closing valve for opening and closing the hot water inlet 2 of pop sheet 1 through the pop sheet 1 Ri by the fluid 圧Shi re Sunda 9 of the opening and closing drive means and Tokoro Teisu preparative stroke vertical movement, FIG. sera Mi Remind as in 3 to form the arcuate cross section of the valve body 8 a in the lower end click made of a hollow valve has a rod 8 b. Fluid 圧Shi Li Sunda 9 have been erected on the supporting member 4, the piston preparative Nro head 9 a A valve rods support within 4 together with the support 4 to penetrations slidably sealingly It is linked to a 8 b. Thus, sheet re down Ri by by extending action of da 9 under movement of the valve rod 8 b, the valve body 8 a is engaged closely engaged in lined sprue 2, hot water supply port 2 is closed, once again re Sunda 9 upward to by Ribentai 8 a valve stem 8 b due to shrinkage operation is disengaged from the hot water supply port 2, the hot water supply port 2 is a child to open.

1 0 is the level detecting means for detecting the upper limit level L 1 and the lower-limit level L 2 of the molten metal 6 in the pop bets 1. The upper limit level of the molten metal 6 in the pop preparative 1 Ryo

L 1 is a level of the molten metal surface at the start of hot water to 铸造 machine, may be the same as molten metal surface level L o of the molten metal 6 is accumulated in the molten metal holding furnace 5 (pots 1 outside of the molten metal 6) many. The lower limit level L 2 is the level of the molten metal surface in pots in one of the time the tapping has been completed to 铸造 machine. To describe an embodiment of the level detector 1 0 With reference to FIG. 7, fitted with a flange body 1 2 via a base plate 1 1 the center of the upper surface of the support body 4 which is located directly above the pop Bok 1 , the flange member 1 2 and the base plate 1 1 and moths Lee dos rie Bed 1 3 and support 4 and fixed to a vertically penetrating this, while 揷通 the float shaft 1 4 slidably , attaching the float 1 5 the lower end of the float shaft 1 4 positioned pop preparative 1, also the sensing object 1 6 at the upper end, respectively. The tubular cover 1 7 of the upper flange 1 2 transparent upper end is closed, and disposing the float shaft 1 4 and the detected body 1 6 to encapsulate, also cylindrical cover 1 on the outside of the 7, upper and lower two photoelectric sweep rate pitch 1 8, 1 9, of the detection object 1 6 consisting of their respective the projector 1 8 a, 1 9 a and the light receiver 1 8 b, 1 9 b and a detection means installed their respective height adjustable, Thus the upper photoelectric sweep rate pitch 1 8 detects the upper limit level L 1 through the detected body 1 6, the lower photoelectric sweep rate pitch 1 9 There detecting the lower limit level L 2 through a test known body 1 6.

The base plate 1 1, flange body 1 2, Guy Dos rie Bed 1 3, flow preparative shaft 1 4, float 1 5, the detection object 1 6 and the tubular cover one 1 7, respectively Serra mission- formed by click. Is a sensing means sensing object 1 6 is not limited to the photoelectric sweep rate Tutsi 1 8, 1 9, Ru can and child applying proximity sweep rate pitch like. The level detector 1 0 described above, is adopted float type detecting means, in addition to this, those that have been on so that to directly measure the surface of the molten metal 6 in the pots 1 by laser or electrostatic it may be employed those of the capacity variable type. The 2 0 in FIG. 1, and the pressure inside the pots 1 by supplying an inert gas (nitrogen gas or dry reaction hardly gas molten metal such as air) into the pots 1, and the feed not the active gas is discharged to the atmosphere is a pressurized pressure reducing means order to reduce the internal pressure of the pop sheet 1. The pressure depressurizing means 2 0, the base plate 1 1 through the support 4 from the pop sheet 1 gas provided in earthenware pots by leading to the internal paper discharge holes 2 1 (see FIGS. 1 and 2), the pressurized source 2 2 comprising a pump for pumping the example tank and its gas containing the inert gas, as well as by connexion connected to Gasurai down 2 3, the pressure regulating valve 2 4 this line 2 3 and which was provided with the electromagnetic switching valve 2 5, the electromagnetic change-over valve 2 5, although not shown, a photoelectric sweep rate pitch 1 8 of the control unit and level detecting means 1 0 fluid 圧Shi Li Sunda 9, 1 9 It is electrically connected respectively to the. It is also possible to earthenware pots by arbitrarily changing the pressure in the pop Bok 1 using electrical control possible pressure control valve and a pressure regulating valve 2 4.

Thus, the can and pressurized by supplying an inert gas to pop preparative 1, operates the switching valve 2 5 in earthenware pots by opening the flow path toward the gas supply discharge holes 2 1 from the pressure source 2 2 rather I if brought into, Matapo Tsu is can the internal sheet 1 depressurizing, switching the flow path blocked and gas lined discharge holes 2 1 from pressurized source 2 2 cormorants by communicating with the atmosphere open passage the valve it is sufficient to operate. Adjustment of pressure in the pop DOO within 1 Ru can and this done by a pressure regulating valve 2 4. Note that as the pressure source 2 2, the inert gas may be one of the Hare good high-pressure bomb and pressurized 圧充 塡.

The pop preparative its inlet side to the hot water supply port 2 of 1, oxide mixed in the molten metal 6 in the molten metal holding furnace 5, dust and other impurities Sera Mi click made full I to remove the Luther 2 6 is attached. The full I filter one 2 6 Remind as in FIG. 3, in which each wall portion I by the canceller Mi click the box-shaped exhibiting a porous, formed hemispherically, other desired shape , its porosity state is about 1 0-6 0 main Tsu shoe. In this mounting of the full I filter one 2 6 is an engagement portion 2 7 provided on the lower surface portion of the pop sheet 1, causes it to lock the flange portion 2 6 a of full I filter one 2 6 upper end When may. In this full I Luther 2 6, it is sufficient to mount as needed.

The tapping tube 7 is summer so as to be horizontally moved together with the pots 1 by the horizontal moving unit 2 8 fluid pressure Siri Sunda expression. In other words, the horizontal moving hand stage 2 8, as shown in FIGS. 1 and 2, above the molten metal holding furnace 5 the support frame 3 0 from the upper end of the base frame 2 9 provided adjacent to the molten metal holding furnace 5 to Wataru connexion horizontally to extend, in the guide Doreru 3 formed on both sides in the longitudinal direction of the support frame 3 0 0 a, 3 0 a, a plurality of wheels attached via a bracket Bok 3 1 respectively to the support 4 3 2 causes rollably engaged, the support 4 via a connecting rod 3 3 b to piston preparative Nro' de 3 3 a fluid pressure Siri Sunda 3 3 installed on the base frame 2 9 interlocked the concatenation, Te cowpea stretch operation of shea Li Sunda 3 3, in which the support 4 that horizontally moving the pots 1 and hot water pipe 7 that is provided integrally in the longitudinal direction of the support frame 3 0 it can. Therefore, Ri by the and this to be appropriately stretchable actuating fluid pressure silicon down da 3 3, a pouring port of 铸 Zoki M tip portion 7 d of hot water pipe 7 reliably abutting engagement against the (not shown) it can be.

Next, the operation of the molten metal dispensing apparatus constructed as described above.

First, pots 1 inside is opened to the atmosphere, from the state of opening and closing valve 8 is hot water □ 2 moves upward (opening) is opened as shown in FIGS. 1 and 3, the molten metal 6 in the molten metal holding furnace 5 from hot water inlet 2 flows into pots 1, when the molten metal 6 is raised to the upper limit level L 1 in the pots 1, which level detection means 1 0 is detected. That is, float 1 5 rises with increasing water level in the pop Bok 1, when the detection object 1 6 via the flows preparative shaft 1 4 moves upward to a position corresponding to the upper limit level L 1, the detection object 1 6 photoelectric sweep rate pitch 1 8 detects. It by this detection known signal, the fluid pressure Siri Sunda 9 is extended operation, at the same time the on-off valve 8 moves downward to close the hot water port 2, pressurizing the pressurized side of the pressure reducing means 2 0 is actuated, gas 1 O

Inert gas is supplied to the top of the pots within 1 than the scan supply discharge holes 2 1. The molten metal 6 in the pots 1 by the supply of gas is pressurized, the molten metal 6 is Yuku is discharged from the discharge spout 3 to the hot water pipe 7. Thus, the molten metal 6 in the pots 1 when lowered to the lower limit level L 2, therewith corresponding photoelectric sweep rate of the detected body 1 6 lowered to a position pitch 1 9 detects. I by this detection signal, pressurizing depressurizing means 2 0. solenoid changeover valve 2 5 is operated is operated vacuum side, the inert gas which has been subjected fed into the pop Bok 1 is electromagnetic switching valve 2 5 issued release to the atmosphere through the open passage, at the same time the fluid pressure Siri Sunda 9 is contracted operating, the on-off valve 8 moves upward to open the hot water supply port 2, thereby the molten metal 6 in the molten metal holding furnace 5 is pop It flows into preparative 1, after the above operation is repeated.

As mentioned above, Te cowpea that the interior of the soluble water 6 by the inert gas supplied into the pop Bok 1 is pressurized downward from the upper limit level L 1 to the lower limit level L 2, the molten metal 6 in the pots 1 would certain amount corresponding to the product of the interval length and pots 1 internal cross-sectional area between the two levels L 1, L 2 is tapped from the hot water pipe 7. Thus, lever to hold the spacing length between the both levels L 1, L 2 constant, by the this is repeated a plurality of times the series of operations, quantitative supply the molten metal 6 in the amount of equivalent to the plurality of times be able to. Tapping amount of the molten metal 6, by changing the lower side photoelectric sweep rate pitch 1-9 level detecting means 1 0 the position of (detecting means) in the vertical direction, it can be freely changed.

In the use of this molten metal dispensing apparatus, amount that the molten metal 6 in the pots 1 are tapped through the tapping pipe 7, the molten metal 6 in the molten metal holding furnace 5 is reduced, the molten metal holding furnace with a decrease of their molten metal surface level L o of the molten metal 6 in the 5 becomes that want under little by little. Therefore, in order to keep the period of 隔長 of the upper limit level L 1 and the lower limit level L 2 constant, as much as possible the size camphor Rutotomoni the internal volume of the molten metal holding furnace 5, the surface of the molten metal holding furnace 5 is lowered there is no way must Ru gonna supplemented with molten metal 6 sequentially detected while the molten metal holding furnace 5 the molten metal surface level L o.

4 and 5, the molten metal dispensing apparatus according to a second embodiment of the present invention which was shows a configuration in which the apparatus differs from the first embodiment, in addition to the on-off valve 8 for opening and closing the hot water inlet 2 is that with the opening and closing valve 3 8 to move up and down by the fluid pressure Shi Li Sunda 3 9 (opening and closing drive means) so as to open and close the discharge spout 3 of pots 1. Other constructions, the first embodiment and the same der because, for the same components will not be described are denoted by the same reference numerals. That is, on-off valve 3 8 for discharging the sprue 3 is substantially the same as the on-off valve 8 of the hot water supply port 2, the valve stem 3 formed with an arcuate cross section of the valve body 3 8 a to the lower end as shown in FIG. 5 has 8 b, the fluid pressure silica Sunda 3 9 is erected in parallel to the support 4 and the fluid pressure Siri Sunda 9 lined sprue-off valve 8, the piston preparative Nro' de 3 9 a is a support It is linked to a valve rod 3 8 b a support within 4 while slidably through 4 the sealed state. Thus, this sheet re Sunda 3 9 downward movement of the valve rod 3 8 b by extension operation of the valve body 3 8 a closely engaged with the discharge sprue 3 closes the exhaust water outlet 3, also Siri Sunda 3 disengaged from more valve body 3 8 a is discharged sprue 3 to 9 upward movement of the valve rod 3 8 b due to shrinkage operation of, and is adapted to open the exhaust sprue 3. The on-off valve 3 8 is also formed in Sera Mi click.

Incidentally, pressurizing depressurizing means 2 0, like the first embodiment shown in FIG. 1, for example tanks containing the inert gas and the pressurized source 2 2 comprising a pump for pumping the gas, Gasurai together connected by down 2 3, which was provided with a pressure regulating valve 2 4 and the electromagnetic switching valve 2 5 this line 2 3, the solenoid switching valve 2 5, the control unit and level detecting means of the fluid pressure Siri Sunda 9 It is electrically connected respectively to 1 0 of the optical dense Lee pitch 1 8, 1 9. When the pressurized by supplying an inert gas into the pots 1 may be caused to operate the switching valve 2 5 to open the flow path toward the gas Awasehai holes 2 1 a pressure source 2 2 and when depressurizing the inside of the pots 1 Bayoi ask the flow path blocked and gas supply discharge holes 2 1 from pressurized source 2 2 activates the switching valve so as to communicate with the atmosphere open passage. Adjustment of pressure in pots 1 may be carried out by the pressure regulating valve 2 4. Incidentally, it may be arbitrarily changed the pressure in the pots 1 have use an electrical controllable pressure control valve and a pressure regulating valve 2 4 is the same as the first embodiment. Note also, in the pressure source 2 2, may be as high pressure cylinder to the inert gas was pressurized 圧充 塡. Above operation is the same as the first embodiment.

In use of the melt dispensing apparatus constructed as described above, FIG. 4 及 beauty Figure 5 to move upward the hot water outlet on-off valve 8 as shown hot water inlet 2 is opened and the discharge spout on-off valve 3 8 is a high sprue 3 closed by downward Fukutai, by the opening the inner pots 1 to the atmospheric pressure by operating the Zhuang side reduced pressurization vacuum hand stage 2 0 connexion, the molten metal holding furnace 5 molten metal 6 of the flows from the hot water supply port 2 into the pots 1, the molten metal 6 in its is the rise to the upper limit level L 1 in the pots 1, which level detection means 1 0 is detected. That is, when the float 1 5 with the increase of the molten metal 6 is increased, the detection object 1 6 via the float shaft 1 4 moves upward to a position corresponding to the upper limit level L 1, the sensing object 1 6 photoelectric sweep rate pitch 1 8 detects.

This detection signal, the fluid pressure Siri Sunda 9 extending action and moves downward off valve 8, and at the same time closes the hot water inlet 2, the fluid pressure silica Sunda 3 9 is contracted actuated upward off valve 3 8 the exhaust sprue 3 opened, at the same time also the operation of the pressurizing depressurizing means 2 0 switched to the pressurized side, the inert gas is supplied to the top of the pots 1 from the gas supply discharge holes 2 1. Thus, the molten metal 6 in the pots 1 is pressurized, the discharge sprue 3 Yuki is discharged to the hot water pipe 7, Thus the surface of the molten metal 6 in the pots 1 to a predetermined lower limit level L 2 When lowered, therewith corresponding photoelectric sweep rate of the detected body 1 6 lowered to a position pitch 1 9 detects. The detection signal at the same time the fluid pressure Siri Sunda 9 is opened upward movement and hot water outlet 2-off valve 8 and contracting working fluid pressure silica Sunda 3 9 extending action and moves downward off valve 3 8 close the discharge spout 3, at the same time also vacuum side of the pressurizing depressurizing means 2 0 was created dynamic inert gas which has been supplied into the pots 1, via the gas supply discharge holes 2 1 or al switching valve 2 5 is released into the atmosphere, it soluble hot water 6 of'll go-between molten metal holding furnace 5 flows into the pots 1. After the above operation is repeated.

According to the above-described melt dispensing apparatus, by the molten metal 6 by the inert gas supplied into the pots 1 is pressurized downward from the upper limit level L 1 to the lower limit level L 2, pots 1 inside of the molten metal 6, will be a certain amount corresponding to the product of the interval length and pots 1 internal cross-sectional area between the two levels L 1, L 2 are tapped pipe 7 or al tapping and thus be repeated several times the series of operations by, Ru can the molten alloy 6 in an amount corresponding to the plurality of times and this quantitative supply. Tapping amount of the molten metal 6, by the this changing the position of the level detection means 1 0 of the upper and lower photoelectric sweep rate pitch 1 8, 1 9 (detecting means) in the vertical direction, Ru can and child freely changed. In this case, the upper and lower photoelectric sweep rate pitch 1 8, 1 9 of, may be changed to any position.

In this apparatus, the come and the molten metal in the pots 1 are discharged to the lower limit level L 2, the molten metal holding furnace 5 operates in reduced-pressure side switched switching valve 2 5 pressurizing depressurizing means 2 0 by the detection signal when the molten metal 6 of the is introduced into the pots 1, flows from the hot water inlet 2 to the molten metal 6 in the pots 1 in a state where the opening and closing valve 3 8 is closed discharge sprue 3 operates the exhaust sprue 3 side because you to be, and is discharged from the pots 1 in the inflow of the molten metal 6 can be accurately regulated to, for example 3 part discharge spout of the molten metal 6 that inflows into pots 1 to the outside there is no such thing as that.

Figure 6 shows the melt dispensing apparatus according to a third embodiment of the present invention, the configuration from which the device is different from the second embodiment, to force the inert gas supplied into the pots 1 by sucking the outside in that with a pressurizing depressurizing means 4 0 which is adapted to reduce the pressure inside pots 1. Other constructions for the is the same as the second embodiment, its description is omitted with the same reference numerals for the same components.

That is, pressurizing depressurizing means 4 0, as illustrated in FIG. 6, the gas supply discharge holes 2 1 leading to the interior of the pop Bok 1, the inert gas tank 3 4 stored inert gas, the tank 3 and an inert gas pressure pump 35 for pumping the inert gas in the 4, together with the connected I by the Gasurai down 3 6, the pressure regulating valve 3 7 and the electromagnetic switching valve 4 1 provided in the line 3 6 further connecting the electromagnetic switching valve 4 1 and said inert Antofagasta tank 3 4 by a bypass line 4 2, this bus Ipasurai emissions 4 2, is interposed a suction pump 4 3 and the pressure regulating valve 4 4 . Electromagnetic switching valve 4 1, although not shown,, respectively it to the fluid pressure Siri Sunda 9, 3 9 of the control unit and level detecting means 1 0 photoelectric sweep rate pitch 1 8, 1 9 are electrically connected there.

Thus, when pressurized by supplying an inert gas into the pots 1, opens the flow path directed from the inert gas pressure pump 35 to the gas supply discharge holes 2 1 with blocking the bi Pasurai emissions 4 2 as it is sufficient to actuate the switching valve 4 1, also when depressurizing the inside of the pots 1, the pressure pump 35 to shut off the flow path toward the gas supply and discharge holes 2 1 a and the bypass line 4 2 the switching valve 4 1 it is sufficient to operate to open. Pressure adjustment and vacuum controller in pots 1 can and this performing Ri by the pressure regulating valve 3 7, 4 4.

In use of the melt dispensing apparatus constructed as described above, hot water port 2 is opened and the discharge spout on-off valve 3 8 hot water outlet on-off valve 8 is moved upward is the discharge sprue 3 moves downward from a closed state, the inner pots 1 by operating the vacuum side of the pressurizing pressure reducing means 4 0 by sucking toward the outside, the molten metal 6 in the molten metal holding furnace 5 is from hot water inlet 2 into pots 1 It flowed, when the molten metal 6 is raised to the upper limit level L 1 in the pots 1, which level detection means 1 0 is detected. That is, flow sheet 1 5 rises with increasing melt 6, if you upward to a position where the detected body 1 6 corresponds to the upper limit level L 1 via the float shaft 1 4, the object to be detected the body 1 6 photoelectric sweep rate pitch 1 8 detects.

This detection signal, the fluid pressure Siri Sunda 9 extending action and moves downward off valve 8, and at the same time closes the hot water inlet 2, the fluid pressure silica Sunda 3 9 is contracted actuated upward off valve 3 8 the exhaust sprue 3 opened, at the same time also the operation of the pressurizing depressurizing means 4 0 switched to the pressurized side, the inert gas is supplied to the top of the pots 1 from the gas supply discharge holes 2 1. Thus, the molten metal 6 in the pots 1 is pressurized, the discharge sprue 3 Yuki is discharged to the hot water pipe 7, Thus the surface of the molten metal 6 in the pots 1 to a predetermined lower limit level L 2 When lowered, therewith corresponding photoelectric sweep rate of the detected body 1 6 lowered to a position pitch 1 9 detects. The detection signal at the same time the fluid pressure Siri Sunda 9 is opened upward movement and hot water outlet 2-off valve 8 and contracting working fluid pressure silica Sunda 3 9 extending action and moves downward off valve 3 8 close the discharge spout 3, at the same time also vacuum side of the pressurizing depressurizing means 4 0 to work moving, inert gas which has been supplied into the pots 1, via the gas supply discharge holes 2 1 or al switching valve 4 1 through the bypass line 4 2 will be returned to the inert Antofagasta tank 3 4, melt 6 by connexion molten metal holding furnace 5 flows into the pots 1. After the above operation is repeated.

When by the above-described melt dispensing apparatus, by the molten metal 6 by the inert gas supplied into the pots 1 is pressurized downward from the upper limit level L 1 to the lower limit level L 2, pots 1 inside of the molten metal 6, will be a certain amount corresponding to the product of the interval length and pots 1 internal cross-sectional area between the two levels L 1, L 2 are tapped pipe 7 or al tapping and thus be repeated several times the series of operations by, Ru can be quantified Kyoawase the molten alloy 6 in an amount corresponding to the plurality of times. Tapping amount of the molten metal 6, I'm on the this to change the position of the level detection means 1 0 of the upper and lower photoelectric sweep rate pitch 1 8, 1 9 (detecting means) in the vertical direction, that can be freely changed is the same as the first and second embodiments. In this case, among the upper and lower photoelectric sweep rate pitch 1 8, 1 9, the same as also the embodiment that may be modified to any position.

In particular, in this apparatus, as well as features and off valve 3 8 that opens and closes the discharge spout 3 and the on-off valve 8 for opening and closing the hot water inlet 2, forcibly external inert gas which is pressurized supplied into the pots 1 due to the provision of a pressurized 圧減 pressure means 4 0 which is adapted to reduce the pressure inside pots 1 by suction in, the tapping of the molten metal 6 by pots 1 internal pressure were pooled in the molten metal holding furnace 5 even if drop molten metal surface level L 0 of the molten metal 6, you are possible to hold the upper-limit level L 1 in the pots 1 always at a constant position, thus necessary to replenish frequently melt 6 in the molten metal holding furnace 5 no, on operation of supplying the molten metal 6 is facilitated, it is possible to perform more accurate metering.

Incidentally, the embodiment is mainly a to has been described as completely example for supplying a melt of aluminum alloy is not limited to this embodiment, for example, a molten metal supply device for various metals such as molten magnesium it goes without saying that Kiru de be used Te. In the case of molten magnesium, pots, open closed or hot water pipe can be used those made of iron.

Industrial Applicability

According to the present invention As is apparent from the above description, the molten metal of the molten metal holding furnace automatically can reliably and this quantitative supplied to 铸造 machine, also the molten metal by pressurizing depressurizing means by use of inert gases to supply and discharge, even if the molten metal is not contaminated with magnetic metal components in the molten metal when a nonferrous metal such as aluminum alloy, inside the magnetic metal component device as in the case of using the magnetic pump without clogging adsorbed, on failure is small, it can be cheap costs made relatively inexpensive to manufacture. Further, oxidized 1 tau in the metal melt surface by use of inert gases

Thing does not occur. Et al is, since it tapped without lowering the melt temperature, it is possible to reduce the temperature of the dissolve furnace Ya holding furnace helps save energy and the monitor, and makes it possible a good quality 铸造.

Claims

The scope of the claims
Has a hot water inlet and discharge sprue 1 bottom side, closed like a pop Bok disposed at a predetermined height position in the molten metal holding furnace, a hot water pipe connectable to 铸造 machine is continuously provided on the discharge spout , and the hot water outlet opening closes off valve moves up and down inside the pots by the opening and closing drive means, and level detecting means that detect the upper level and lower level of the molten metal in the pots, nitrogen gas Ya in pots the molten metal, such as dry air reaction hardly gas is supplied (hereinafter referred to as "inert gas") pots inside a pressurized, also the pots inside to release the inert gas in the pots to the atmosphere ; and a pressurizing depressurizing means you vacuum, through hot water pipe the melt flowing into the pots a melt of pop the bets I by the and this pressurizing to the lower level from the exhaust sprue from the upper level from lined sprue melt dispensing apparatus comprising as to hot water.
Has a hot water inlet and discharge spout 2 the bottom side, closed like a pop Bok disposed at a predetermined height position in the molten metal holding furnace, a hot water pipe connectable to 铸造 machine is continuously provided on the discharge spout opening and closing valve for opening and closing respectively moved vertically to supply sprue and discharge sprue to the inside pots by respective opening and closing drive means, and level detecting means for detecting an upper limit level and lower limit level of molten metal in the pots, the pots pressurized internal pots by supplying an inert gas, also the inert gas in the pots provided with a pressure decompression means for decompressing the pots inside being discharged to the atmosphere, hot water port Karapo Tsu melt dispensing apparatus by the this pressurizing the molten metal flowing into the preparative from the upper level to the lower limit level becomes so as to hot water through hot water pipe molten metal in the pots from the exhaust sprue.
3 the bottom side has a hot water inlet and discharge sprue, the closed-shaped and pop Bok disposed at a predetermined height position in the molten metal holding furnace, a hot water pipe connectable to 铸造 machine is continuously provided on the discharge spout opening and closing valve for opening and closing respectively moved vertically to supply sprue and discharge sprue to the inside pots by respective opening and closing drive means, and level detecting means for detecting an upper limit level and lower limit level of molten metal in the pots, the pots pressurized internal pots by supplying an inert gas, also to force Aspirate the inert gas in the pots provided with a pressure decompression means for decompressing the inside pots, pots from the hot water outlet melt dispensing apparatus comprising as to hot water through hot water pipe molten metal in the pots from the exhaust sprue by pressurizing the inflowing molten metal from the upper level to the lower limit level within.
4 closing driving means Ri Do from the fluid 圧Shi Li Sunda erected on the upper end portion of the pop Bok, the fluid pressure Siri Sunda the piston preparative Nro' Ru claims 1 to name by connecting rod-off valve to de 3 melt dispensing apparatus according to any one.
5 pots on-off valve and tapping pipes, melt dispensing apparatus according to any one of claims 1 to 3, which is formed by the respective sera Mi click.
6 pop Bok of the hot water outlet melt dispensing apparatus according to any one of claims 1 to 3 Sera Mi click made full I filter one is Ri attached to its own inlet side.
PCT/JP1998/000416 1997-02-04 1998-01-30 Apparatus for supplying molten metal at predetermined rate WO1998033612A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9/21159 1997-02-04
JP2115997 1997-02-04

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE69833306T DE69833306T2 (en) 1997-02-04 1998-01-30 Device for feeding metal melts in specified quantities
EP19980901083 EP0901854B1 (en) 1997-02-04 1998-01-30 Apparatus for supplying molten metal at predetermined rate
JP10527550A JP3017540B2 (en) 1997-02-04 1998-01-30 Molten metal dispensing apparatus

Publications (1)

Publication Number Publication Date
WO1998033612A1 true WO1998033612A1 (en) 1998-08-06

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EP (1) EP0901854B1 (en)
DE (1) DE69833306T2 (en)
WO (1) WO1998033612A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338668A (en) * 1998-06-27 1999-12-29 John Campbell Dispensing apparatus and method
US6841120B2 (en) 2002-06-13 2005-01-11 Alotech Ltd. Llc Dispensing apparatus and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813416C2 (en) * 1998-03-26 2000-01-05 Univ Hannover Method and apparatus for handling melts, especially of magnesium and magnesium alloys
JP4292585B2 (en) * 2007-04-09 2009-07-08 新東工業株式会社 Low pressure casting apparatus and inert gas filling method
DE102009051879B3 (en) * 2009-11-04 2011-06-01 Baumgartner, Heinrich G. Metal die-casting machine

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Publication number Priority date Publication date Assignee Title
JPS60115357A (en) * 1983-11-25 1985-06-21 Nachi Fujikoshi Corp Device for ladling molten metal at constant rate
JPS63252667A (en) * 1987-04-07 1988-10-19 Meichiyuu Seiki Kk Device for pouring molten metal
JPH04371359A (en) * 1991-06-17 1992-12-24 Kobe Steel Ltd Method and device for supplying molten metal
JPH0716737A (en) * 1993-06-30 1995-01-20 General Motors Corp <Gm> Melt pumping apparatus and melt casting apparatus
JPH0810937A (en) * 1994-06-24 1996-01-16 Hirochiku:Kk Device for pouring molten non-ferrous metal of constant amount

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115357A (en) * 1983-11-25 1985-06-21 Nachi Fujikoshi Corp Device for ladling molten metal at constant rate
JPS63252667A (en) * 1987-04-07 1988-10-19 Meichiyuu Seiki Kk Device for pouring molten metal
JPH04371359A (en) * 1991-06-17 1992-12-24 Kobe Steel Ltd Method and device for supplying molten metal
JPH0716737A (en) * 1993-06-30 1995-01-20 General Motors Corp <Gm> Melt pumping apparatus and melt casting apparatus
JPH0810937A (en) * 1994-06-24 1996-01-16 Hirochiku:Kk Device for pouring molten non-ferrous metal of constant amount

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338668A (en) * 1998-06-27 1999-12-29 John Campbell Dispensing apparatus and method
US6841120B2 (en) 2002-06-13 2005-01-11 Alotech Ltd. Llc Dispensing apparatus and method

Also Published As

Publication number Publication date
DE69833306D1 (en) 2006-04-13
EP0901854B1 (en) 2006-01-25
DE69833306T2 (en) 2006-09-07
EP0901854A1 (en) 1999-03-17
EP0901854A4 (en) 2002-01-30

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