CN103153501A - Device and method for metering molten material and casting machine - Google Patents
Device and method for metering molten material and casting machine Download PDFInfo
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- CN103153501A CN103153501A CN2011800440858A CN201180044085A CN103153501A CN 103153501 A CN103153501 A CN 103153501A CN 2011800440858 A CN2011800440858 A CN 2011800440858A CN 201180044085 A CN201180044085 A CN 201180044085A CN 103153501 A CN103153501 A CN 103153501A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Vacuum Packaging (AREA)
- Basic Packing Technique (AREA)
- Continuous Casting (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Sampling And Sample Adjustment (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a molten material metering device for a casting system, wherein the molten material metering device comprises a metering container which can be evacuated and moved between a melt receiving point and a melt discharge point and which is designed to remove a meterable quantity of molten casting material from a melt bath at the melt receiving point and to transfer said material to the melt discharge point of the casting system and to discharge said material there. The invention also relates to a molten material metering method that can be carried out by using such a device and to a casting machine equipped with such a molten material metering device. A molten material metering device according to the invention comprises an actuatable closure means (5, 6) for selectively opening and closing a melt opening (4) of the metering container, wherein the closure means, in the closed position thereof, closes the melt opening of the metering container, leaving a capillary opening, and/or comprises a weight sensor (40) which is designed to monitor the weight of the empty metering container, as the latter is lowered into the melt bath, with respect to reaching a predefinable submerged position of the metering container.
Description
Technical field
the present invention relates to the device for the melt of metering casting system, wherein the melt metering device comprises measuring container, this measuring container can be emptying and be moved between melt picked-up point and melt emission point, and the melt material that design is used for having gageable amount takes out from the melting tank of melt picked-up point, described material is transported to the melt emission point of casting system, and there with described material discharging, the invention still further relates to a kind of can be by the method that is used for the metering melt of implementing with such device, and the casting machine that is equipped with such melt metering device.Such apparatus and method for example are used for the deposite metal that will cast in the metal pattern casting machine amount of falling into a trap.
Background technology
Known have a melt metering device, wherein absorbs melt material in melting tank by steel ladle or casting ladle are immersed into, and subsequently melt material is transported to melt emission point or casting point, there melt is discharged.Steel ladle is manually operable, and perhaps the mechanical supply unit with the operation steel ladle is connected.In conveying, the surface of absorbing the melt in steel ladle is exposed to surrounding air.
As the alternative melt metering system that used, wherein melt is transported to downward-sloping conveyance conduit from the melting tank of melting furnaces, and in conveyance conduit, material flows to the melt emission point by mechanical pump or pneumatic displacement.Yet these systems are quite extensive, and when melt flows along conveyance conduit, and melt is subject to relatively strong cooling, unless take corresponding counterattacking measure.
Alternative as another, the known melt metering device that the above-mentioned type is arranged.Described device comprises can be emptying and have a measuring container of the emptying device of attaching troops to a unit.Disclosed patent documentation JP2000-218360 A discloses such melt metering device, and the melt opening is formed by the pipeline bearing there, and this bearing originates in the bottom section of measuring container, extends along inside and outside direction.Cover towards the halfbody of the pipeline bearing of the interior direction orientation dome-shaped front end-plate by hollow pipe, this hollow pipe medially and longitudinally is arranged in measuring container, and is connected to inert gas source.Immersion sensor is arranged in the outside of container, to such an extent as to and be used for monitoring of containers and drop in melting tank and to arrive predetermined submerged position.The amount that is drawn into the melt in measuring container is monitored by weight sensor.So, can exempt according to the filling level sensor that is arranged on traditionally in container.
Disclosed specification JP2009-039764A discloses the melt metering device of similar the type, its have can be emptying measuring container, the melt opening of this container is formed by the pipeline bearing equally, and this pipeline bearing originates in container bottom, extends along inside and outside direction.In this device, cover to the halfbody of the projecting inward pipeline bearing cheese leading section by axially movable closed bar.By moving forward and backward closed bar, bar can move between the closed position of the open position of opening the melt opening in the interior upper end of pipeline bearing and blocking-up melt opening.The filling level sensor that is arranged in container can be surveyed the predetermined fill level of melt arrival that when extracts in container.Internal tank is emptying or filling inert gas selectively.In the device according to JP2000-218360 A and JP2009-039764 A, as described therein, even container remains on obliquity for the purpose of coming down in torrents fully, the pipeline bearing halfbody to interior orientation of melt opening also can stop or hinder the complete draining of the container at emission point place.
Summary of the invention
The present invention based on technical problem be to provide the above-mentioned type the melt metering device and can be by the melt metering method of this device enforcement, and the casting machine that is equipped with described device, by it, melt material can advantageously absorb out and be transported to emission point in the mode that is measured from melting tank, wherein, measuring container from melt picked-up point to the conveying of melt emission point, can be fully or avoid largely the oxidation effect of institute's conveyed melt of not expecting to have and/or the melt loss that does not expect to have in any situation.
This problem solves by the present invention, the invention provides the feature with claim 1 the melt metering device, have the melt metering method of the feature of claim 9 and the casting machine with feature of claim 15.Shown favourable further embodiment of the present invention in dependent claims.
Melt metering device according to the present invention comprises measuring container that can be emptying and is used for the emptying device that measuring container is emptying.Stoped the melt material that absorbs in the measuring container to be exposed to surrounding air or in disadvantageous other environment of melt with measuring container is emptying.In this way, melt can be transported to melt emission point or casting point safely, and is not subjected to chemical affect in emptying, measuring container that close.Therefore, also with the further minimum heat losses of the melt carried, wherein measuring container can optionally be provided with heat insulator in the use of the emptying measuring container of definitely closing.
As feature, melt metering device according to the present invention comprises controllable device and/or the special weight sensor of cutting out, this is closed device and is used for optionally opening or closing the melt opening of measuring container, block the melt opening of measuring container in the mode that reserves the capillary opening in its blocking position, to such an extent as to this weight sensor structure is used for monitoring the weight of empty measuring container when measuring container drops to the predetermined submerged position that arrives measuring container in melting tank.
In many cases, a requirement of measuring container that can be emptying is, from melt picked-up point to the conveying of melt emission point, melt should preferably not drop from container or spill.Result is, described requirement can satisfy by the special device of closing especially goodly, and this is closed device and reserve the capillary opening in its blocking position, and therefore it does not attempt the melt opening is thoroughly sealed.Due to the capillary opening, after measuring container is pulled out from melting tank, be retained in melt in the zone of melt opening can be safely and be maintained at reliably on container and container among, it is due to keep emptying of internal tank with also in the negative pressure of the region generating effect of capillary opening or suck pressure and can not drop downwards or spill from container.
By additionally or alternatively as the special weight sensor that device arranges of closing, measuring container can be safely and is entered reliably its predetermined submerged position, with from melting tank picked-up melt, and can not require arrange independent immersion sensor for this purpose.Be this purpose, weight sensor utilizes following effect, and namely owing to being immersed into resulting buoyancy in melting tank, the weight of empty measuring container can change with measuring.Described effect is more remarkable, and measuring container is lighter.Can also the be measured design of lower area of submergence of container of described effect affects.
In another embodiment of the invention, the capillary opening is formed by the inward flange of melt opening and the annular capillary gap closed between the outward flange of device, or is formed by at least one capillary clearance groove that is arranged on the inside edge of melt opening or closes the outer edge of device.Consider functional and common manufacturing technology, the realization of described capillary opening is favourable.
In one embodiment of the invention, the melt opening is arranged on the bottom section of measuring container, and the controllable device of closing comprises shut-off plug, and this shut-off plug is arranged in measuring container, makes removable in a longitudinal direction.This layout provides following advantage, and namely for the picked-up melt, measuring container is only in bottom section just must drop to melting tank, so that melt is extracted measuring container by the melt opening from melting tank.In addition, for for measuring container discharging melt, only need to close device and open the melt opening, and measuring container do not need mobilely, for example tilt to exhaust position.The melt opening can design without any problems as follows, that is, make measuring container come down in torrents fully and do not need other measure.For this purpose, the melt opening can for example be arranged on the minimum point of container bottom.In another embodiment of the invention, the melt opening is formed along the tubulose seat area that outward direction protrudes by the bottom section from measuring container.Then, for melt is extracted in measuring container, in not needing measuring container is immersed into melting tank on the whole width of its bottom section, but only seat area needs submergence.Seat area can realize by relatively little diameter, and the effect that consequently can tear the bath surface layer of melting tank remains to minimum.
In of the present invention another improves, the melt metering device comprises that controllable inert gas applies device, for example can controllably be filled by common inert gas by its measuring container, as inert gas environment common application on melting tank in melting furnaces.There, inert gas is realized its common inert gas function to the melt in measuring container, and in the situation that pressure overload applies, and it can also be supported in the conveying from the melt of measuring container at melt emission point place.
In another embodiment of the invention, emptying device comprises vavuum pump or the piston cylinder units that is controllably operated.Two alternatives all allow to have the contemplated emptying of the relatively little measuring container of paying.
In another embodiment of the invention, weight sensor is configured to survey the weight of the measuring container that is filled from melt picked-up point at measuring container to the moving process of melt emission point, and identifies in this way potential melt loss.
In another embodiment of the invention, weight sensor is configured to survey the weight of measuring container in the melt discharge process, to allow recognizing whether or when container comes down in torrents fully.
The method according to this invention uses melt metering device according to the present invention to implement.
In the further embodiment of the method, measuring container drops in melting tank, has reached predetermined submerged position until detected by weight sensor, and melt opens-close device and be driven to open position, is used for from melting tank picked-up melt.Selectable inert gas applies device and does not activate, and emptying device is activated.So, melt extracts in measuring container, and if feasible, inert gas extracts from measuring container.
In another embodiment of the invention, after the predetermined time end cycle, or when arriving predetermined melt loading in measuring container (this can for example be surveyed by weight sensor), melt stops absorbing measuring container from melting tank, and wherein the melt of measuring container is opened-closed device and is driven to blocking position.But this makes the favourable melt amount of easily absorbing and carrying accurate measurement from the melting tank to the emission point.
In one embodiment of the invention, complete from melting tank, melt is absorbed measuring container after, emptying device remains activation, melt is opened-is closed device and remains locking, until the melt discharge process begins.Be transported in the process of emission point the exhaust of the melt that absorbs in this permission measuring container at measuring container.Be set in embodiments of the invention when the melt opening is closed, the capillary opening keeps, melt remains in container place or container safely in addition, this is by remaining measuring container emptying and realizing in conjunction with the capillary opening, and this is stoping the melt loss of not expecting from the picked-up point to the fed distance of emission point.
In of the present invention another improved, melt was opened and is closed device and be driven into open position, melt is discharged from measuring container, and activate inert gas and apply device.Therefore, melt can discharge from cross the measuring container that is loaded with inert gas rapidly, and if feasible words are passed through gravitational discharge.
In of the present invention another improves, when measuring container moves to the melt emission point from melt picked-up point, for potential melt loss and/or monitor the weight of measuring container for coming down in torrents fully in discharge process, and especially can use for this purpose the weight sensor that is provided with in corresponding embodiment of the present invention.
Pressurization die casting machine according to the present invention is equipped with according to melt metering device of the present invention.Described equipment can especially be metal pressurization die casting machine, and the metal material of wherein processing can be for example aluminium, magnesium or zinc.
Description of drawings
Shown in the accompanying drawings favourable embodiment of the present invention, and will be described subsequently.Shown in accompanying drawing:
Fig. 1 is the schematic diagram with melt metering device of measuring container, and wherein measuring container is emptying in longitudinal sectional view, and has the vavuum pump as emptying device;
Fig. 2 has shown a kind of variant of melt metering device shown in Figure 1, and it has the piston cylinder units as emptying device;
Fig. 3 is the schematic cross sectional views of the part of metal pressurization die casting machine, and this pressurization die casting machine has the melt metering device according to Fig. 1 or type shown in Figure 2 in this case especially;
Fig. 4 is the indicative flowchart of the melt metering method that can implement by shown device;
Fig. 5 is the detailed section view of bottom of the measuring container of Fig. 1 or Fig. 2, and it is in for the position of extracting melt;
Fig. 6 is the view according to Fig. 4, yet wherein measuring container is in transfer position between melt picked-up point and melt emission point;
Fig. 7 is the view according to Fig. 4, yet wherein measuring container is in the melt exhaust position;
Fig. 8 is the schematic longitudinal sectional view according to another melt metering device of the present invention that comprises weight sensor;
Fig. 9 is the view according to Fig. 8, and wherein the melt metering device is in the process that drops to melting tank;
Figure 10 is the view according to Fig. 9, and wherein the melt metering device is in filling process;
Figure 11 is the view according to Figure 10, and wherein the melt metering device is in the course of conveying from the picked-up point to emission point;
Figure 12 is the cutaway view along the line XII-XII of Figure 11;
Figure 13 is the cutaway view according to the improved embodiment of the present invention of Figure 12;
Figure 14 is the view according to Figure 11, and wherein the melt metering device is in exhaust position.
The specific embodiment
As the melt ingest tools, melt metering device shown in Figure 1 comprise can be emptying measuring container 1, measuring container 1 has the container tank 1a of the cylindricality of being essentially and is used for from the lid 1b of upside covering container tank 1a, and lid 1b is placed on container tank 1a, and is connected with it separably.For this purpose, container tank 1a comprises the circular flange 1c that stretches out along outside direction from container tank 1a at its top, and lid 1b for example is anchored on flange 1c by unshowned spiral connecting piece, and wherein, rounded seal 2 is inserted between tank flange 1c and lid 1b.Be configured with the flange 3 with hook opening 3a in the place's perforating of orientation, top at lid 1b place, can be arranged on supply unit by pivoting by its measuring container 1.
Container tank 1a constructs in funnel shaped mode in bottom section 1d, bottom funnel part with inclination, tubulose seat area 1e stretches out in a downward direction from this funnel part, form the melt opening 4 of container 1, melt can be transported in container 1 by melt opening 4, and is drawn container 1 afterwards.
In addition, measuring container 1 is equipped with inert gas to apply device, and this inert gas applies device and comprises the inert gas source 9 that is connected to composite vacuum/inert gas pipeline 8 by inert gas pipeline 10.Be provided with optional manual blocking-up valve 11 and controllable magnetic valve 12 in inert gas supply line 10.
Fill device 9-12 by correspondingly activating vavuum pump 7 or inert gas, the inner space 14 of measuring container 1 is can be optionally emptying or fill common inert gas, for example nitrogen.The part 8a of composite vacuum/inert gas pipeline 8 is configured to the flexible pipe part, is for example the type of corresponding section of jurisdiction, makes in this way measuring container 1 still can move to a certain extent with respect to vavuum pump 7 and inert gas source 9.So, even when vavuum pump 7 and inert gas source 9 are arranged with fixed form, measuring container 1 can carry out contemplated melt Conveying motion, and can not affected by being connected of being connected with inert gas source of itself and vavuum pump 7.
In addition, measuring container 1 comprises the melt filling level sensor 13 of the melt fill level in exploration vessel 1.In shown example, filling level sensor 13 is configured to the gage of self known type, and it is fixed to container lid 1b place, and extends downwardly into therefrom in internal tank 14.Based on demand and Sensor Design, the fill level of melt in the continuous exploration vessel 1 of melt filling level sensor 13, perhaps it surveys when the melt fill level arrives specific threshold value, or exceeds on it or drop under it.
Melting tank immersion sensor 15 is arranged in the outside of measuring container 1, and whether it can exploration vessel 1 be immersed in the melting tank of melting furnaces the degree of depth with picked-up melt and/or institute's submergence.In illustrated example, the gage of sensor 15 for self having known, it directionally is fixed on the outer edge that is positioned at dissolving 1a outside of container lid 1b downwards.There, its extend to the part that makes its measuring transducer at least to pot bottom zone 1d the place or tubulose enter/discharge the horizontal plane at bearing 1e place.So, it can be surveyed and enter/discharge the submergence of bearing 1e in the melting tank.
Fig. 2 has shown the variant of the device that Fig. 1 is shown, and wherein only the structure of emptying device is different from Fig. 1.Hereinafter, identical label is used for representing parts identical or function equivalent, and can be with reference to the explanation about Fig. 1 in such degree.
In the situation of the shown exemplary of Fig. 2, emptying device comprises piston cylinder units 17, this piston cylinder units 17 has cylinder 16, extends to piston rod 19 outside cylinder 16 with the piston 18 that can axially movable mode guides with in a side in cylinder 16, piston rod 19 guides on the end face of cylinder 16, and is connected to Linear actuator 20 by its corresponding end.By Linear actuator 20, piston 18 can move between the end position A that inserts fully that is being shown by solid line within cylinder 16 and the position C that stretches out fully that is shown by dotted line, as shown in double-head arrow P2.The sensor element 21 as the end converting member of Linear actuator 20 that passes through to configure is surveyed equally by predetermined centre position or the center B shown in dotted line.For example, when the picked-up melt was in the container 1, by shrinking piston 18, measuring container 1 was drained.For example, can implement the propelling of piston 18 in the process of melt discharging.
Fig. 3 has shown the melt metering device according to Fig. 1 or type shown in Figure 2 that is used in Casting Equipment.In an example shown, Casting Equipment exemplarily is shown as for casting for example by the metal pressurization die casting machine of the metal parts of aluminium, magnesium or zinc manufacturing.
The mode of having known with self, the pressurization die casting machine comprises the structure 22 for the casting mould (not shown), it has fixing mold half and mold half movably, the latter is driven by the closing component (not shown), also has the melt supply unit, in shown example, the melt supply unit comprises horizontally disposed casting cylinder 23 and cast pistons 25, wherein casts cylinder 23 and comprises the melt supply opening 24 that is located thereon in part.Cast pistons 25 is arranged in casting cylinder 23, and can and advance between the position at punctured position and move axially, as shown in Figure 3, supply with opening 24 unlatchings and can be used for the melt supply in punctured position, in advancing the position, by moving forward in the end position that advances, cast pistons 25 can be expressed to the metal melt that is transported in advance the amount of measuring in casting cylinder 23 in the casting mould of closing before.
In addition, the pressurization die casting machine comprises melting furnaces 26, and it is arranged to have predetermined distance with casting mould structure 22.The type that melting furnaces 26 are also known for self, it has fusion crucible 27 with the melting tank 28 for the preparation of corresponding metal material.
The pressurization die casting machine is equipped with the melt metering device according to Fig. 1 or type shown in Figure 2, purpose is to process metal melt that will be scheduled to, amount that measure for corresponding casting to take out from melting tank 28, with be transported to the casting cylinder 23 supply opening 24, and with its be discharged into there the casting cylinder 23 in.For this purpose, the melt metering device comprises measuring container 1 and the supply unit 29 that is connected to measuring container 1.
Especially, shown in supply unit 29 in example comprise the turning arm 31 that is driven by relevant pivot actuator 30, and measuring container 1 links by it free end that unit 3,3a hang on turning arm 31.Turning arm 31 carry out by broken arcs 32 represented about semicircular rotatablely move to make measuring container 1 in (solid line shows) crucible 27 melt picked-up point and the melt emission point on (the dotted line demonstration) casting cylinder 23 between move.Measuring container 1 and turning arm 31 hinged be chosen as make measuring container 1 rotatably relative turning arm 31 move to limited degree, namely at melt picked-up point, it is rendered as vertical position in crucible 27, yet the melt emission point place on casting cylinder 23, it is rendered as the position with respect to a little inclination of vertical position as shown.This for example can be implemented by chain-wheel mechanism, this chain-wheel mechanism has at the sprocket wheel 34 of the driving side on the hinged end of turning arm 31 and is hinged on chain 33 between the sprocket wheel 35 of the vessel side on container on the turning arm free end, its middle sprocket 34,35 is configured with the tooth of suitable varying number, for example compare the sprocket wheel 35 of vessel side, the sprocket wheel 34 of drive-side has the tooth of comparatively high amts.Then, together with the semicircle of turning arm 31 rotatablely moved, measuring container 1 carried out the vertical position at it melt in crucible 27 picked-up point place and its rotatablely moving between the obliquity at the melt emission point place on casting cylinder 23 simultaneously.
The below will be in addition explains to provide the more detailed description of the melt metering process in the situation of metal pressurization die casting machine of Fig. 3 to the detailed situation of Fig. 7 with reference to the flow chart of Fig. 4 and Fig. 5.When machine switched off or when being in the vacant time, supply unit 29 remains on standby position (the step S1 in Fig. 4) with measuring container 1, be in fusion crucible 27 the outside but on melting furnaces 26.At described standby position, emptying device 7,16-21 are not activated.
In case need to carry out casting process, supply unit 29 drops to measuring container 1 in melt crucible 27, until detecting the bearing 13 that enters/discharge of measuring container 1, immersion sensor 15 is immersed in melting tank 28.Especially, immersion sensor 15 detects the pond horizontal plane 28a that gage probe parts on the horizontal plane of the lower limb that slightly is arranged in bearing 1e have arrived melting tank 28.The corresponding signal of immersion sensor 15 is used as control signal, by it, shut-off plug 5 is driven into its open position, unless it has been in the there in the standby position of measuring container 1, magnetic valve 9 is closed, and emptying device 7,16-21 are activated.Be easily, magnetic valve 9 was opened before measuring container 1 is immersed in melting tank 28, and so, internal tank 14 is filled with inert gas.In addition, by described signal from immersion sensor 15, the motion of turning arm 31 stops, and namely measuring container 1 remains on the melt pickup location according to Fig. 3, wherein only has its bearing 1e to be immersed in melting tank 28.Advantage herein is that the bath surface layer at horizontal plane 28a place, pond needn't bear disadvantageous tearing.Therefore, the interference of bath surface layer is remained on minimum, and especially than for example when according to above-mentioned traditional casting ladle technology submergence casting ladle, disturb less.
After completing the container immersion processes (the step S2 of Fig. 4), the melt of the desired amount of measuring absorbs to measuring container 1 (the step S3 in Fig. 4) from melting tank 28.For this purpose, as described, emptying device 7,16-21 are activated, and by formed negative pressure in internal tank 14, melt 37 extracts in internal tank 14 by entering of being opened by shut-off plug 5/outlet opening 4, as shown by flow of melt arrow 36 in Fig. 5.In case arrived the lower end of the measuring transducer of filling level sensor 13 by the horizontal plane that is drawn into the melt 37 in container 1 as the bearing 1e that absorbs bearing, filling level sensor 13 response concurrents go out corresponding signal, by this signal termination melt capture process.For this purpose, shut-off plug 5 moves to its blocking position so that opening 4 is blocked, and its blocking-up melt opening 4 still reserves capillary opening 4a there, as shown in Figure 6.In other words, shut-off plug 5 is not exclusively blocked melt opening 4 at blocking position, but between the outward flange 5a of the inward flange 1e ' that has capillary opening 4a to be retained in to enter/discharge bearing 1e and shut-off plug 5.For example, this can realize than the overall diameter of the shut-off plug 5 of the little upper corresponding capillary dimensions of the interior diameter that enters/discharge bearing 1e by selecting slightly.
Alternative as the described function of melt filling level sensor 13 will absorb the metering of the melt amount in container 1 and can implement as follows, but is the suction effect of being scheduled to of default cycle predetermined time of melt suction process and/or emptying device.For example, but after cycle predetermined time, shut-off plug 5 can drivenly return to its blocking position, but and/or the inlet capacity of emptying device only be activated in cycle predetermined time, and inlet capacity enough is drawn into melt in container 1.In addition, in embodiment shown in Figure 2, when piston 18 arrived its center B, the detectable signal of end conversion element 21 also can be used for driving shut-off plug 5 to blocking position.
If feasible, the activity of emptying device 7,16-21 remains the inlet capacity with change.In the situation of device shown in Figure 1, can for example implement by the soakage or the inlet capacity that are transformed into lower vavuum pump 7.In the situation of the shown device of Fig. 2, the suction effect that is used for absorbing melt 37 advances end position A to be retracted to center B by piston 18 from it to be caused.The center of described piston 18 is surveyed by end conversion element 21, and at this moment the detectable signal of end conversion element 21 is transformed into the Linear actuator 20 relevant to piston rod 19 than low velocity, and this carries out simultaneously with the blocking-up campaign of shut-off plug 5 haply.By its slower process from center B to its constricted end portion position C, therefore piston 18 remains altered suction effect.
The melt that is incorporated in container 1 with the amount of being measured is transported to the melt emission point of casting cylinder 23 places afterwards together with container 1, wherein enter/outlet opening 4 is blocked, and the gas compartment that is positioned in interior of the container 14 on the melt that absorbs is drained (the step S4 of Fig. 4).For this purpose, the container 1 that comprises the pinning of the melt 37 that absorbs is rotated to outside melt crucible 27 by supply unit 29, by according to the supply opening 24 of the casting cylinder 23 of Fig. 3 melt exhaust position to casting cylinder 23 places.Fig. 6 has shown the measuring container 1 of the melt 37 of the amount that the picked-up that is in this conveying situation is measured to some extent, and enter/outlet opening 4 is closed plug 5 blocking-up, and reserve capillary opening 4a.
As mentioned above, by keep emptying device 7,17 to 21 specific inlet capacity in the conveying campaign of the measuring container 1 of closing, the exhaust of the melt 37 that absorbs in the container 1 that can advantageously carry out expecting, and by cooperating with capillary opening 4a, the melt 37 that absorbs remains in container 1 safely simultaneously.Especially, by keeping there the suction effect because of the emptying device 7 of capillary opening 4a, melt 37 also remain on safely and reliably in container 1 and the zone that enters/discharge bearing 1 of container 1 in, although shut-off plug 5 is in blocking position.The melt that enters/discharge the lower edge of bearing 1e extracts in capillary opening 4a by sucking effect, and therefore remains and be attached to container 1 place, and does not have dropping of not wishing to occur downwards.The capillary dimensions of capillary opening 4a is considered all the other parameters and structure suitably, these parameters for example for to enter/discharge density and the viscosity of shape, suction pressure and the melt of bearing, and capillary dimensions determines for example empirically for this purpose.
Can carry out the melt discharge process after that, the melt 37 of the amount of wherein measuring is filled into casting cylinder 23 by supplying with opening 24 from measuring container 1, cast pistons 25 retractions (seeing the step S5 of Fig. 4) this moment.For this purpose, after measuring container 1 arrives discharging or dump position on its supply opening 24 that is positioned at casting cylinder 23, driven its punctured position of getting back to of shut-off plug 5, its is opened and enters/outlet opening 4 there.In addition, magnetic valve 12 is opened, and by so doing, the inert gas of internal tank is filled and is activated again.Simultaneously, the emptying effect of emptying device does not activate.In the situation of device shown in Figure 1, this reaches by closing vavuum pump 7.In the situation of device shown in Figure 2, piston 18 remains on its constricted end portion position C.As alternative, in this case, even in the discharge process of measuring container 1, piston 18 can be placed in it and advance position A.Correspondingly, the melt that absorbs in container 1 due to weight by the entering of container 1/outlet opening 4 with supply with opening 24 and be poured onto in casting cylinder 23, and provide support by filling pressurized inert gas to interior of the container 14, and if feasible, also by piston from last end position C move forward to its foremost section position A provide support.
Fig. 7 has shown the detailed view of the measuring container 1 that is in described exhaust position, is represented by corresponding flow of melt arrow 38.After that, measuring container 1 can carry out new melt capture process again, and is transferred unit 29 and rotates back to the standby position that is positioned on melting furnaces 26 from exhaust position, or the melt pickup location in melt crucible 27 is got back in rotation immediately.
Fig. 8 has shown another exemplary favourable embodiment of the present invention in Figure 14.As long as this device comprise with according to Fig. 1 to the device of Fig. 7 identical or parts function equivalent, just use identical label in order to understand better, and at this point can be with reference to top according to the explanation that comprise function and advantage of Fig. 1 to the device of Fig. 7.For example, when shut-off plug 5 is in as shown in Figure 8 blocking position, is entering/discharging and also be suitable for reserving capillary opening 4a between bearing 1e and shut-off plug 5, this moment, shut-off plug 5 was blocked melt opening 4 except capillary opening 4a.
Compare Fig. 1 to the shown device of Fig. 7, Fig. 8 also comprises weight sensor 40 to the shown device of Figure 14, this weight sensor 40 is arranged between the Linear actuator 6 and support component 41 of shut-off plug 5, in this case, Linear actuator 6 is configured to piston-cylinder unit, and in this example, measuring container 1 is connected to the supply unit that is not shown specifically by support component 41, and this supply unit is for example consistent with supply unit 29 shown in Figure 3 on 26S Proteasome Structure and Function.In this example, container tank 1a is by the housing of container lid 1b holding to piston cylinder units 6.Weight sensor 40(is also referred to as weighing unit) generally include the measurement component for the weight of measuring the measuring container that comprises piston cylinder units 61 connect, and for assessment of the evaluation means of weight measurement.
Based on needs and application, the sensor evaluation parts can be incorporated in a common sensor housing together with measurement component, perhaps it can additionally be installed as hardware and/or software, for example as the part of the control module that is not shown specifically, control module is carried out the various control task of melt metering device.The characteristic functions of weight sensor 40 is implemented in evaluation means.
As shown in Figure 9, with Fig. 5 correspondingly, the first function of weight sensor 40 comprises measuring container 1 is delivered to designed extraction or the submerged position 1 of determining
A, be used for from melting tank 28 picked-up melts.For this purpose, after above-mentioned discharge process, measuring container 1 moves to melt picked-up point from the melt emission point again, and drops to there in melting tank 28.In case measuring container 1 enters/discharge bearing 1e place's arrival melting tank horizontal plane 28a at it, and is immersed in melting tank 28, melting tank 28 imposes on container 1 based on submergence with buoyancy, and causes the measured weight reducing of weight sensor 40.Therefore, by weight sensor 40, can accurately detect and arrive best submerged position 1
A, stop at that time the descending motion of container.As seen in fig. 9, best submerged position is arranged on as upper/lower positions, namely melting tank horizontal plane 28a is in the upper end that enters/discharge bearing 1e there, makes bearing 1e be immersed into fully in melting tank 28, and the pot bottom zone 1d that begins therefrom simultaneously to become large can not be immersed in melting tank 28.Explain for Fig. 5 as top, this is the minimum interference of bath surface layer, and stops melt to be attached to the bottom section 1d on seat area 1e of being positioned at of container.
As in Figure 10 by as shown in the return mobile arrow 42 and emptying flow arrow 43 of stopper, after arriving desired submerged position, drivenly after shut-off plug 5 gets back to its open position, and activates emptying device.Herein, as shown in melt flows arrow 36, melt 37 is drawn in container 1.In another function, weight sensor 40 is monitored the amount that is drawn into the melt 37 in container 1 in the melt capture process by the weight of measuring vessel.Arrive submerged position 1 at container 1
AAfter, this can promote by the zero balance of implementing weight sensor 40, makes direct detection after it be drawn into the weight of the melt 37 in container 1.
In case this function by sensor 40 detects the melt 37 of scheduled volume and extracts in container 1, as shown in figure 11, by shut-off plug 5 being advanced to its blocking position and by measuring container 1 being risen to the suction process that terminates outside melting tank 28 as shown in mobile arrow 44.After that, to explain about the step S4 in Fig. 4 as top, measuring container 1 moves to the melt emission point from melt picked-up point, and wherein emptying device remains activation, and it has identical or altered inlet capacity.
As mentioned above, the measuring container 1 that is filled keeps emptying, simultaneously reserve capillary opening 4a at melt opening 4 places in the blocking position of shut-off plug 5, this has following desired effect: namely, the melt that is arranged in the zone that enters/discharge bearing 1e is remained on container 1 and container 1 place safely, and it is the suction pressure/negative pressure in capillary opening 4a and can not dropping from container 1 due to same purpose.Figure 12 has shown the cutaway view of capillary opening, and this capillary opening forms annular gap 4a in this case
1, it is continuous between the outer wall 5a of stopper and bearing inwall 1e ' in a circumferential direction.Its following situation forms: namely the overall diameter of shut-off plug 5 is chosen as slightly than the little corresponding capillary dimensions of the interior diameter that enters/discharge bearing 1e.The best capillary width that is used for desired effect can be for example for every kind of application experience ground decision.
Figure 13 has shown a plurality of capillary channel 4a that are distributed on outer circumferential side
2The alternative design of capillary opening 4a of type, in this example, capillary channel is set to entering/discharging the groove that extends vertically on the inward flange of bearing 1e.The institute be understood that, other alternate embodiment of capillary opening 4a is also possible.Therefore, be replaced in annular capillary gap 4a
1, annular capillary gap can be set to only extend the part of whole circumference.In other alternative embodiment, a capillary channel rather than a plurality of capillary channel 4a only are set
2, and/or at least one capillary channel is not accurately to extend axial direction, but have circumferential component.In other alternative embodiment, one or more capillary channel are arranged on the periphery of shut-off plug 5, rather than at the inside edge of bearing 1e, or at least one capillary channel is arranged on shut-off plug 5 and bearing 1e in each case.
Implement in function at another, from melt picked-up point was transported to the process of melt emission point, weight sensor 40 was monitored the weight of the measuring container 1 of filling at measuring container 1.Therefore, the melt 37 that absorbs of any container 1 drops or spills and can be detected.
Afterwards, in case measuring container 1 reaches the melt emission point that is positioned on cast steel 23, discharge process triggers as follows: namely as shown in figure 14 and by ground that mobile arrow 45 signifies, by being driven, shut-off plug 5 gets back to its open position, and such as flow arrow 46 symbol ground, emptying device is turned off and is transformed into and ventilate or inert gas is filled.Reason thus, such as by flow arrow 38 symbol, melt 37 enters into casting cylinder 23 from container 1 rapidly.The shape of container 1, and especially it comprises that the shape of the bottom section 1d of bearing 1e allows container 1 at shown its vertical position draining fully that is arranged on cast steel 23, and do not need tilt container.
Implement in function at another, weight sensor 40 comes the discharging fully of monitoring of containers 1 by the weight of monitoring of containers in discharge process.In case the weight minimizing that weight sensor 40 detects in discharge process is consistent with the weight increase in filling process, can infer that container 1 discharges fully.If necessary, the described monitoring between the amount of the loading that absorbs and the melt that discharges can be used as the truthlikeness inspection, to ensure the quality of products.After detecting discharging fully, can again move to melt picked-up point after container 1, wherein shut-off plug 5 preferably is advanced to its blocking position, and the filling of termination inert gas.
As mentioned above, in the situation of device shown in Figure 14, measuring container 1 drops in melting tank 28 and can monitor by operating weight sensor 40 at Fig. 8, makes and can remove the immersion sensor 15 that uses from the embodiment according to Fig. 1 to 7.In another alternate embodiment, measuring container 1 drops in melting tank 28 until arrive at desired submerged position 1A and can monitor or control by pressure measxurement.For this purpose, in the present embodiment, container 1 descends and shut-off plug 5 moves to its open position, and the inert gas of container 1 is filled and remained activation simultaneously.In case container 1 is immersed in melting tank 28, the inert gas that is incorporated in internal tank 14 just can not be overflowed by melt opening 4, and this causes in container 1 and the measurable inert gas pressure in the inert gas supply line increases.Described pressure increase can be surveyed by the inert gas pressure transducer that arranges for this purpose.Afterwards, the inert gas pressure transducer carries out signal signature to arriving desired submerged position, at this moment stops the filling of inert gas, and activates emptying device so that melt 1 is extracted in container.This system also be suitable for not being equipped with weight sensor according to embodiment of the present invention.
As from can be clearly top explanation, as just exemplary embodiment, the invention provides very favorable, novel melt metering device, by this device, can be transported to the melt emission point and can not touch air from melting tank by the melt of the amount of accurate measurement.For this purpose, measuring container can be emptying.In melt Conveying, measuring container can remain closes, and can keep negative pressure in measuring container.Especially when reserving the capillary opening and closing the melt opening of remainder, even negative pressure causes in this key area, melt also can remain among container or the container place.Measuring container can comprise and remove bearing, and the major part that removes bearing phase container has very little cross section, and measuring container only need to enter during the bearing place is immersed into melting tank whereby, and this effect of tearing with the surface of melting tank remains minimum.It is low that measuring container emptying also remains heat loss, wherein, depends on requirement, can be for chamber wall, for example shown in tank skin and/or container lid in embodiment extra heat insulator is set.
In addition, one aspect of the present invention provides the embodiment of especially favourable weight sensor, and corresponding melt metering device is equipped with this weight sensor.Therefore, when measuring container drops in melting tank, weight sensor is used for monitoring the weight of empty measuring container, this allows accurately to arrive the submergence of the best of being expected/suction position in simple mode, and do not need independent position sensor, for example be the type of the melting tank immersion sensor in the outside that is arranged in measuring container.Based on requiring and use, weight sensor may be embodied as has other function.Therefore, for example it can in the weight of measuring container monitoring of containers from the process that be transported to the melt emission point is put in the melt picked-up, drop or spill from container to allow the surveying melt that whether has occured not expect.In another embodiment, in the melt suction process, when desired the weight that weight sensor can monitoring of containers extracted in container with the melt of surveying amount, then stops the melt capture process.Yet in discharge process, weight sensor can be used for monitoring of containers weight, to allow surveying whether container is emptied completely in another embodiment.Institute is understood that, based on requiring, only needs to implement the function of the mentioned weight sensor of a part.
In the accompanying drawing of Fig. 1 to 7, shown according to of the present invention do not have weight sensor but have the embodiment of capillary opening, in Fig. 8 to 14, shown the embodiment that weight sensor and capillary opening are provided.The institute be understood that, except these, the present invention also is included in and only comprises weight sensor in corresponding enforcement, and is not included in the embodiment of the capillary opening of the melt opening part of closing in other place.
Not only can be used for the pressurize situation of die casting machine of metal that institute clearly shows according to melt metering system of the present invention, but can be used for the Casting Equipment that any melt therein will be transported to by melting tank from afar melt emission point or casting point, for example also have the permanent mould casting device.Can be adapted to easily existing casting unit or melting furnaces according to melt metering system of the present invention, make the existing equipment can be without any the upgrading of obstacle ground.Even in fusion crucible, the variant of larger pond horizontal plane does not have obstacle yet for melt metering device according to the present invention.Measuring container can drop in fusion crucible simply to certain horizontal plane, surveys there by the signal mark, and namely container enters during the bearing place is immersed into melting tank at it.Supply unit can remain simply textural, and if need, it is corresponding driver only.Any common melt, the metal melt of especially for example making for aluminium, magnesium or zinc casting can be carried by melt metering device according to the present invention.
Claims (15)
1. melt metering device that is used for Casting Equipment comprises:
Measuring container (1), described measuring container can be emptying and be moved between melt picked-up point and melt emission point, and be constructed to be permeable to the casting melt of the amount that picked-up can be measured from the melting tank of described melt picked-up point, melt is transported to the melt emission point of described Casting Equipment, and there with its discharging, and
Emptying device (7,17), it is connected with described measuring container so that described measuring container is emptying,
It is characterized in that, also comprise
That can control closes device (5,6), be used for optionally opening and closing the melt opening (4) of described measuring container (1), wherein, the described device of closing is blocked the melt opening of described measuring container and reserves capillary opening (4a) in its blocking position, and/or
Weight sensor (40), described weight sensor structure is used for dropping in described melting tank to arrive the predetermined submerged position (1 of described measuring container at described measuring container
A) weight of the empty measuring container of time monitoring.
2. melt metering device according to claim 1, is characterized in that, described capillary opening is by the annular capillary gap (4a between the inward flange of described melt opening (1e ') and described outward flange (5a) of closing device
1) form, or be arranged on inside edge or the described capillary clearance groove (4a that closes the outer edge of device of described melt opening by at least one
2) form.
3. melt metering device according to claim 1 and 2, it is characterized in that, the described device of closing that can control comprises shut-off plug (5), described shut-off plug can be arranged in described measuring container with vertically moving, and wherein said melt open construction is in the bottom section (1d) of described measuring container.
4. melt metering device according to claim 3, is characterized in that, described melt opening is formed along the tubulose seat area (1e) that outward direction stretches out by the bottom section from described measuring container.
5. the described melt metering device of any one in 4 according to claim 1, is characterized in that, comprises that also the inert gas that can control fills device (9-12), and being used for can be described measuring container filling inert gas with controlling.
6. the described melt metering device of any one in 5 according to claim 1, is characterized in that the piston cylinder units (17) that described emptying device comprises vavuum pump (7) or can controllably activate.
7. the described melt metering device of any one in 6 according to claim 1, it is characterized in that, described weight sensor is configured to monitor for melt loss from the movement of melt emission point is put in the melt picked-up at described measuring container the weight of the described measuring container that is filled.
8. the described melt metering device of any one in 7 according to claim 1, is characterized in that, described weight sensor is configured to the weight of coming down in torrents to monitor described measuring container fully for melt emission point place.
9. be used for the method for the melt of metering casting machine, it is characterized in that, with according to claim 1 in 8 the described melt metering device of any one implement described method.
10. method according to claim 9, it is characterized in that, in order to absorb melt from melting tank, described measuring container drops in melting tank, arrived predetermined submerged position until detect by described weight sensor, the described device of closing is driven to open position and activates described emptying device.
11. according to claim 9 or 10 described methods, it is characterized in that, after the predetermined time end cycle, or when arriving melt fill level predetermined, that be detected in described measuring container, the picked-up of termination melt from melting tank to described measuring container, the wherein said device of closing is driven to blocking position.
12. the described method of any one in 11 according to claim 9, it is characterized in that, complete melt absorbed described measuring container from melting tank after, described emptying device remains activation, and the described device of closing is what close, until the melt discharge process begins.
13. the described method of any one in 12, is characterized in that according to claim 9, for melt is discharged from described measuring container, the described device of closing is driven into open position, and activates the filling of inert gas.
14. the described method of any one in 13 according to claim 9, it is characterized in that, when monitor described measuring container for coming down in torrents fully by the weight of surveying described measuring container for melt loss and/or the melt discharge process when melt picked-up point moves to the melt emission point.
15. a pressurization die casting machine, it is preferably metal pressurization die casting machine, it is characterized in that, comprises according to claim 1 the described melt metering device of any one in 8.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10169551A EP2407260A1 (en) | 2010-07-14 | 2010-07-14 | Device and method for melt metering and casting machine |
| EP10169551.8 | 2010-07-14 | ||
| PCT/EP2011/060397 WO2012007255A1 (en) | 2010-07-14 | 2011-06-22 | Device and method for metering molten material and casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103153501A true CN103153501A (en) | 2013-06-12 |
| CN103153501B CN103153501B (en) | 2015-12-09 |
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ID=43033213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180044085.8A Active CN103153501B (en) | 2010-07-14 | 2011-06-22 | For measuring apparatus and method and the casting machine of melt |
Country Status (10)
| Country | Link |
|---|---|
| EP (3) | EP2407260A1 (en) |
| KR (1) | KR101849287B1 (en) |
| CN (1) | CN103153501B (en) |
| BR (1) | BR112013000934B1 (en) |
| ES (2) | ES2776252T3 (en) |
| HR (2) | HRP20170552T1 (en) |
| PL (2) | PL3117933T3 (en) |
| RU (1) | RU2584197C2 (en) |
| SI (2) | SI2593253T1 (en) |
| WO (1) | WO2012007255A1 (en) |
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| CN104907529A (en) * | 2015-07-16 | 2015-09-16 | 陈伟 | Molten aluminum quantified feeding system |
| CN105014040A (en) * | 2015-07-20 | 2015-11-04 | 广东科达洁能股份有限公司 | Molten metal drawing device |
| CN105014041A (en) * | 2015-07-20 | 2015-11-04 | 广东科达洁能股份有限公司 | Vacuum molten metal taking equipment |
| CN105057633A (en) * | 2015-07-20 | 2015-11-18 | 广东科达洁能股份有限公司 | Quantitive molten metal vacuum scooping device |
| CN105057634A (en) * | 2015-07-20 | 2015-11-18 | 广东科达洁能股份有限公司 | Method and device for drawing quantitative molten metal in vacuum mode |
| CN105290347A (en) * | 2015-11-22 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Casting speed measurement device |
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| CN106424650A (en) * | 2016-12-20 | 2017-02-22 | 苏州炬鼎工业炉有限公司 | Air pressure type molten aluminum dosing pump |
| CN106670441A (en) * | 2016-12-30 | 2017-05-17 | 北京航空航天大学 | Equipment and method capable of achieving vacuum quantitative casting of molten metal |
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| DE102016112064A1 (en) | 2016-07-01 | 2018-01-04 | Mgg Netherlands B.V. | Process for producing castings and a container usable therefor |
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| AT523251A1 (en) * | 2019-12-13 | 2021-06-15 | Fill Gmbh | Method for pouring melt by means of a melt container in which a melt receiving space is formed |
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| CN113020581A (en) * | 2021-03-23 | 2021-06-25 | 登封市华恒科技有限公司 | Casting ladle for casting aluminum and aluminum alloy and method for casting aluminum liquid or aluminum alloy liquid |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3117933B1 (en) | 2019-12-25 |
| PL3117933T3 (en) | 2020-06-29 |
| EP2407260A1 (en) | 2012-01-18 |
| BR112013000934A2 (en) | 2016-05-17 |
| WO2012007255A1 (en) | 2012-01-19 |
| HRP20200373T1 (en) | 2020-06-12 |
| PL2593253T3 (en) | 2017-08-31 |
| KR20130048239A (en) | 2013-05-09 |
| SI3117933T1 (en) | 2020-03-31 |
| EP2593253A1 (en) | 2013-05-22 |
| EP2593253B1 (en) | 2017-01-11 |
| RU2013104052A (en) | 2014-08-27 |
| HRP20170552T1 (en) | 2017-06-02 |
| EP3117933A1 (en) | 2017-01-18 |
| ES2776252T3 (en) | 2020-07-29 |
| RU2584197C2 (en) | 2016-05-20 |
| KR101849287B1 (en) | 2018-04-16 |
| SI2593253T1 (en) | 2017-04-26 |
| BR112013000934B1 (en) | 2018-09-18 |
| CN103153501B (en) | 2015-12-09 |
| ES2617923T3 (en) | 2017-06-20 |
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