CN100344431C - Method for casting cast or enclosed casting part and device for carrying said method - Google Patents

Abstract

The invention relates to a method for casting mold (38) and an apparatus implementing the method, particularly the mold (10) may hold the parts for surrounding casting using the casting material (12) infusing thereon. If necessary, in a casting station (14), the mold is infused with the casting material in vacuum (16) and then is transfered from the casting station to a coagulation station (18) with at least one heating device (20). In the coagulation station, the mold infused with the casting material is heated by the heating device. When the coagulation station is under atmospheric pressure, the mold (10) comprises a buffer memory (24) or the mold (10) connects to a buffer memory (24), if necessary, the buffer memory being infused the casting material. During the stay period of the mold (10) in the coagulation station (18), the buffer memory at least loaded temporarily by overpressure (26) above atmospheric pressure (22) .

Description

Pour into a mould a foundry goods or enclose method of casting parts and the device of implementing this method

Technical field

The present invention relates to be used to the method for pouring into a mould a foundry goods or enclosing casting/parts of casting, especially using one of cast material such as casting resin (Giessharz) injection wherein may hold one waits to enclose the mold of casting/cast part and relates to the method that cast material condenses at mold, wherein mold is injected into cast material in case of necessity under vacuum in a casting station, is transported to the station and heat with heater at the mold that will inject cast material standing that condenses of condensing with at least one heater from casting station.

Background technology

By EP 0 632 760 B1 known a kind of have beginning part described feature, with the method for a kind of impregnated material or cast material cast part.Casting is to carry out in the casting chamber that is in negative pressure or formation vacuum in the case.Condensing or being hardened in the rearmounted stove of cast material carried out, and this stove is by comprising that a plurality of chambers of chamber are formed behind a stove lock cup, main chamber and the stove lock.Shortcoming wherein is that whole stove or its each chamber must be in excessive rolling, for the operation of less expensive ground a plurality of stove locks will be set thus.And the loaded down with trivial details also costliness that reaches of these pressure brake structures.Certainly too, it must make withstand voltage equally for whole body of heater situation.Another shortcoming of this known method is that owing to operating gate process-input fresh air and the combustion gas based on overall overvoltage, its structure is very complicated and expensive.And it is withstand voltage that the interior conveying device of stove requires transmission device to make, and this also interrelates with expensive.This also causes by way of parenthesis, must official check and accept usually for the putting into operation of stove in the excessive rolling operation, and the cost of expense and time is further increased.

Also need to consider, wherein place the mold of the parts of waiting to cast and forms to have the gap of necessity between them by a plurality of parts.So in known method, need the corresponding mold of constructing hermetically, to avoid causing that the cast material that injects mold in advance under vacuum is subjected to uncontrollable compression shock.Otherwise will cause, the cast material that is in the mold leakage region be subjected to the condensing effect of overvoltage in stove or the hardening furnace can form shrinkage cavity thus in foundry goods.

By DE 27 48 982 C3 known a kind of with casting resin or the flow media of similarly can casting inject the device of mold, it by a plurality of magazines and affiliated dosing pump thereof and the public mixing chamber after being arranged on dosing pump or the container of a vacuum-pumping form, the latter has the pump that continues to carry mixture, and wherein delivery conduit is received each mold from mixing chamber or pump.Be provided with a buffer cell in each delivery conduit of mold, it has a pressure medium interface and the valve on its cast medium inlet.Can work as cast material setting up period relevant in mould by this buffer cell and keep certain pressure with contraction.Material will add to the mould from this buffer cell in the case, so that compensate for shrinkage.The discharge degree that during curing kept of dosing pump thus.In this device work, at first material is pressed into the mold by buffer cell from magazine, fills with the chamber of mold thus by pump.To make cast material inject buffer cell in the continuation of pump is carried, wherein the piston of buffer cell is resisted the active force of the pressure medium on this piston opposite side by displacement.When a control of operation contact pump is turn-offed, one of them valve of at this moment cutting out has avoided the backflow of cast material on the pump direction.Pressure medium keeps certain pressure in cast material, make it continue to enter mold.When occurring shrinking in the cast material solidification process, cast material will be pressed into mold from the buffering unit, and wherein the piston of buffer cell is with displacement.When buffer cell was drained to a certain degree, the control contact was operated again, and the pump under making recloses and make the buffer cell material feeding to a certain degree, was operated again and till pump is turned off up to the control contact.

But the work of this well known device still depends on the set pump that is used for the mold cavity material feeding in casting chamber or there.And this pump will be connected with mold by buffer cell constantly at the cast material setting up period.Only being used for during curing required overvoltage by buffer cell is not to be provided continuously by pump, but is applied to by buffer cell, is till compensate for shrinkage has been applied to until the cast material in buffer cell.In the case, will inject cast material to buffer cell again by pump.Can be well understood to from above-mentioned operation principle, the cast material setting up period pump in mold continues to be connected with mold indirectly, and solidifies in mold with front pump can not be used to annotate other mold when cast material thus.

Summary of the invention

In contrast to this, task of the present invention is, method with the described feature of beginning part is further improved, so that the casting of the cast of foundry goods or parts/enclose casting serially or beat ground or approximate continuous ground carry out, wherein to this required work station, especially condense the station can be simple in structure and cost reasonably constitute.

According to the present invention, to solve in fact in this wise on the method with the described feature of beginning part for this task: the station of condensing is under the atmospheric pressure, mold has a buffer storage or mold is connected with a buffer storage, this buffer storage is marked with cast material in case of necessity at least in part, and this buffer storage of retention period in mold is condensing the station at least temporarily loads with the overvoltage that is higher than atmospheric pressure of a for example overpressure means.

By these measures simple especially structure in station that can realize condensing, it neither needs to be configured to seal, and does not also need to have multiplet.The pressure that acts on the cast material in the mold at duration of coagulation will produce like this, and promptly each mold is for example by the gate channel pressure-loaded.By buffer storage-be also referred to as accumulator-be integrated in each mold or at duration of coagulation is docked on the mold, can compensate the contraction that cast material occurs at duration of coagulation in the mold, mode is by the overvoltage from buffer storage cast material to be injected in the mold cavity.

Another special benefits at the station of condensing of working under atmosphere is that mold itself need not crossing means of press seals.And the additional steam vent or the passage that can be provided for cast itself and also may be used to condense in mold can make the air that may have in the mould leak out from these steam vents or passage.This is actually and can not accomplish in the mold of an air seal.

Buffer storage that is proposed or pressure hoppers relate to one or bigger or littler little pressure vessel, and it partly injects cast material such as casting resin, wherein residual volume be loaded overvoltage, as compressed air.

In another configuration, buffer storage or accumulator for example are integrated in mold on the gate channel, and overvoltage is applied on this integrated buffer storage in the station of condensing like this.Because place the zone of excessive rolling only to relate to mold itself, just can abandon temporary mold or housing from now on, as be used for the temporary mold or the housing of miniature transformer, ignition coil or similar device.

Be appreciated that the advantage for the station of condensing that is implemented under the atmosphere work, as long as it is just enough to make in the mold cast material be applied in overvoltage at duration of coagulation, wherein this overvoltage will be applied in corresponding mold or gate channel or the die cavity by proper device.By the additional buffer storage that is marked with cast material at least in part being set and the cast material in buffer storage being loaded by overvoltage, can also accomplish: the contraction of material is compensated in the mold cavity that duration of coagulation occurs.But this only is an addition thereto.Main task of the present invention only by with overvoltage each mold being loaded individually and can realize in the station of condensing, does not then need to make the whole station of condensing to be operated in the overvoltage atmosphere thus.

Propose according to first preferred implementing form: buffer storage is that the part of mold or be integrated in the mold or with mold is connected, or can be connected with mold at duration of coagulation.Therefore, buffer storage or the accumulator or the part of mold itself that available pressure loads, or take off from mold after the front, station of condensing is connected on the mold and is leaving the station of condensing as separate part.For example can imagine in this respect a closed circuit is set for buffer storage or accumulator.The pressure-loaded of buffer storage or accumulator can be carried out before mold enters the station of condensing.But also can buffer storage just be loaded by overvoltage in the station of condensing, its mode is to overvoltage interface of its configuration.Also brought such advantage thus, promptly the station of being made up of a plurality of chambers of condensing no longer needs to load with overvoltage.Mold itself for example can advantageously be provided with a gate channel or similar portions, unnecessary cast material has been arranged, only need thus with one cross potential source, as the compressed air source butt joint or be connected on the mold, can condense and because integrated accumulator can additionally be realized the compensation of shrinking at excessive rolling thus.

Another configuration according to the present invention is proved advantageously, mold has a chamber that is used to hold cast material and holds parts when needing, and have one and be used to make cast material to inject the gate channel in this chamber, wherein buffer storage or accumulator preferably are integrated in the gate channel or with it and are connected.

Show in the case that advantageously the station of condensing has an overpressure means, the latter can directly be connected with mold with buffer storage or when needing, so that the cast material in the chamber of mold is applied overvoltage.

Preferably, overpressure means has a pneumatic mechanism that can rise or descend, and this pneumatic mechanism is connected with buffer storage or gate channel in the station of condensing.

In this respect advantageously, mold beat ground or stepping ground are transmitted through the station of condensing by means of a conveying device, and wherein each stop position to mold disposes an overpressure means or pneumatic mechanism in the station of condensing.By this measure, pneumatic mechanism-for example as pneumatic lid constitute-can be docked on the gate channel of mold for example on each stop position of mold and then it applied overvoltage or compressed air.In the case, when will having the cast material of respective amount, the cast material duration of coagulation is pressed into the die cavity from the buffering memory additionally.

Favourable also is, corresponding overpressure means or corresponding pneumatic mechanism at first are connected with buffer storage or mold and then break away from and be connected on each stop position.Then mold is continued to transmit in beat ground again the process that the connection of overpressure means or employed pneumatic mechanism or disengagement connect under wherein will repeating.

A preferred configuration according to the present invention proposes, buffer storage is independently exercisable parts, preferably be marked with the container of cast material, especially pressure vessel at least in part, will apply overvoltage or compressed air with an overpressure means this cast material.In the case, buffer storage is connected with its maintenance all the time during mold rests in the station of condensing, because buffer storage itself is in excessive rolling and the cast material in the die cavity is applied overvoltage.In this respect according to this form of implementation no longer needs during mold is by the station of condensing, stop on beat overpressure means or pneumatic mechanism connected or throw off at each.And mold is serially by condensing the station, because buffer storage is connected with mold or gate channel constantly.Owing in buffer storage, also have cast material, so also can compensate contraction in the duration of coagulation appearance by this buffer storage except compressed air.

According to a configuration of the present invention, buffer storage has an output channel and has a valve gear when needing, and by it output channel is opened or closed.Also consider in the case, condense the porch, station and in mold is condensing the station retention period, buffer storage is connected with mold, especially gate channel.As long as buffer storage is not connected with mold, valve gear then cuts out.Valve gear is then opened when buffer storage is connected on the mold, especially forms the circulation connection by this output channel between the gate channel in buffer storage and mold thus.Like this cast material in the die cavity is applied overvoltage and loads with existing other cast material in the buffer storage when needing, cast material in the die cavity is loaded by overvoltage and when needing the cast material in the buffer storage also transfer in the die cavity with compensate for shrinkage.

Stopping in mold is condensing the station expires in the exit, station of condensing buffer storage to be thrown off with mold later on is connected, and this buffer storage can be used for next mold thus.

Advantageously, throw off the buffer storage that connects and be cleaned, inject cast material when needing again and, buffer storage can be connected again with another mold in the porch at the station of condensing with the overvoltage loading.

Be proved in this respect advantageously, mold is transmitted through the station of condensing basically continuously.Be appreciated that but mold also is transmitted through to beat ground or stepping the station of condensing ,-as long as the words that the method step of the method step of front or back allows.

Propose according to another configuration according to the present invention, at mold after the station output of condensing, foundry goods demoulding and cut away the casting pressing port piece from mold.The cutting of this casting pressing port piece can manually or mechanically realize.

According to another configuration, mold constitutes as combination die.

Can advise that in the case mold has the exhaust passage, they make the chamber of mold be connected with atmospheric pressure.This measure shows that not only to inject cast material favourable for standing in cast in the die cavity, and shows cast material condensing in the station of condensing favourable.By the exhaust passage air that may exist in being marked with the die cavity of cast material is leaked out, this is actual on traditional airtight and pressure-tight mold to be impossible realize.

Advantageously, the volume that is contained in the cast material in the buffer storage is determined promptly to be compensated size in the contraction of cast material in die cavity of chien shih setting period like this.The volume of this cast material in buffer storage preferably be adjusted to the volume that is injected into the cast material in the mold 2% to 5% between scope in.

According to another favourable configuration of the present invention, can be individually or be with above-mentioned feature is used relatively, mold is heated with certain temperature fall with the heater at the station of condensing.This measure has its advantage, can conform with the condensation process that the destination influences the cast material in the die cavity.Especially can influence the variation and the propagation of the place ahead part of condensing in the cast material.

Particularly advantageous in the case is that the temperature in deviating from the mold segments area of gate channel is greater than the temperature in the zone in gate channel.By this measure condense the front part branch start from cast material in the die cavity away from advancing on the position of gate channel and from the direction towards gate channel here.By this measure fresh cast material is added to the die cavity at any time from buffering memory or accumulator, with compensate for shrinkage because in the gate channel zone before condensation process closes to an end cast material remain mobile.

Propose according to another form of implementation according to the present invention, the overvoltage of buffer storage is controlled and regulate according to the mould temperature, and this mould temperature is preferably in mold and enters before the station of condensing measured.Especially when the mould temperature is high, improve pressure or when the mould temperature is low, correspondingly reduce pressure.Can guarantee thus, in for example low excessively mould temperature and under the situation of too high buffer storage pressure, make mobile cast material can not extrude, and can not make mold vacancy and cause waste product gradually thus from steam vent.

According to another design of the present invention, the pressure of buffer storage can individually be regulated in each station of mold.Can regulate for example pressure curve thus, its low pressure of cast material to the last be used to condense high pressure of casting resin material that starts from flowing in the first stop.

A configuration according to the inventive method; it is characterized in that; a plurality of molds or cast member stepping ground or continuously, when needing in a circulation route except that also passing through one or more following stations by casting station and the station of condensing are: preheating station; the set station of mold; demoulding station; the sclerosis station, mold purifying station and/or mold loopback station.

Be proved in addition advantageously, parts to be cast or that enclose casting are coils, a transformer, electromagnet or similar electric parts or electronic unit.

The invention still further relates to a kind of device, in particular for implementing the device of said method, it has a casting chamber, condense a stove and a conveying device, and this conveying device is used for mold is transported to by the casting chamber condenses stove and pass the stove that condenses.According to the present invention, this stove that condenses is applied in atmospheric pressure and preferably constitutes as one-way fired furnace.Mold is connected with a buffer storage formation that is marked with cast material at least in part in the stove that condenses.Buffer storage at least temporarily loads with overvoltage in the stove that condenses, and also is loaded serially when needing, and this overvoltage is for example from an overpressure means.What be suitable for usually is to use compressed air or similar pressure medium as crossing potential source.

Advantageously, buffer storage is integrated in the gate channel of mold, and wherein gate channel can have prolongation or widen part, and this part can be injected the cast material of respective amount, with the contraction of compensation in the duration of coagulation appearance.

Advantageously, the overpressure means that the stove and accessory that condenses has a plurality of transport paths along mold to be provided with, wherein mold is transferred or transmits by the stove that condenses by conveying device stepping ground or beat ground, reaches overpressure means and one after the other is connected and throws off connection with buffer storage.

Be proved in the case advantageously, according to another configuration of the present invention, buffer storage is a container that fills with cast material, pressure vessel preferably, and its cast material is applied in overvoltage.

Advantageously, buffer storage enters the stokehold of condensing at mold and is connected with mold by a jockey, and after mold comes out from the stove that condenses, for example is connected with the mold disengagement by a separator.

According to another configuration of the present invention, preferably mold is being condensed and be subjected to the effect of a temperature fall in the stove by relative set temperature device in the stove that condenses.Be transmitted through the stove that condenses if having the mold of the gate channel that is positioned at upper part, be proved advantageously, heater is set at the below of mold, so that cast material begins to condense and only just reach gate channel when condensation process finishes from the die cavity lower area.Therefore can accomplish; In fact the cast material that shrinks at whole condensation process compensating during is imported by gate channel, because the cast material in this gate channel zone of die cavity is actually flowable, finishes up to condensation process.

Advantageously, the condense heater of stove additionally has an infrared heater or infrared radiator.

Mold has one or more exhaust passages or hole, and they make die cavity be connected with atmospheric pressure.

Advantageously, buffer storage continuously or beat ground with overvoltage, load as compressed air.

Mold carries out cast material under negative pressure or vacuum in the casting chamber injection is particularly advantageous.

At last, the proposition according to the present invention is provided with a temperature sensor in the zone of casting chamber, and its detects the temperature of mold, and improves pressure or cross the pressure that correspondingly reduces when hanging down in the buffer storage in the mould temperature when the mould temperature is too high.Can realize that thus the cast material that flows can not be forced out from the venthole of mold when the mould temperature is crossed low or hypertonia, promptly avoid little by little vacancy and make parts become waste product of mold.

Description of drawings

To draw of the present invention other purpose, advantage, feature and application possibility by accompanying drawing to the description of embodiment by following.Wherein all descriptions and/or illustrated features itself or arbitrarily significantly constituted theme of the present invention, and do not rely on claims or its time summary in drawing.

Accompanying drawing is:

Fig. 1: the method according to this invention or according to the summary diagrammatic sketch of first embodiment of device of the present invention, wherein buffer storage reaches by beat ground or load overvoltage discontinuously in the station of condensing

Fig. 2: the method according to this invention or according to the summary diagrammatic sketch of second embodiment of device of the present invention, wherein buffer storage is loaded overvoltage continuously in the station of condensing.

The specific embodiment

Implement the preferred implementing form of described method in 52 representatives of the device shown in Fig. 1 and 2.This device 52 is substantially the same or similarly constitute except that the stove 56 that condenses.

Mold 10 will be transferred by this device 52 by a conveying device 58.In the case, in turn connecting 54, one of chambers of 42, one of 40, one set stations of preheating station casting condense 56, one demoulding stations 44 of stove and a sclerosis station 46.Mold can be carried back set station 42 by the loopback station 50 of a purifying station 48 and a circular flow form from demoulding station 44.

Mold 10 carries out the possible back that preheats and is sent to set station 42 by conveying device 58 in preheating station 40, thus-when needing under the situation of parts to be cast of packing into-can be assembled into the mold 10 of multi-cavity.Then mold 10 is sent to casting chamber 54 by conveying device 58, and wherein mold injects cast material 12 16 times in vacuum.In the case, cast material 12 for example injects in the chamber 30 of mold 10 by a gate channel 32.

The mold 10 that is injected into cast material 12 now is sent to the stove 56 that condenses by conveying device 58, and this stove is under the atmospheric pressure and has a heater 20.In this condensed stove 56, the cast material that is arranged in the chamber 30 of mold 10 was applied in overvoltage and heating, imports condensation process thus.

After finishing, condensation process will in demoulding station 44, make foundry goods 38 depannings by opening of mold 10.Foundry goods 38 is sent to sclerosis station 46 by conveying device 58 then, so that last sclerosis.

Mold 10 or casting die part will be sent to purifying station 48 from demoulding station 44, so that and then can be used for the new round operation of device 52 on set station 42.

When needing, mold 10 is heated to relevant temperature in preheating station 40 when device 52 startings.Aspect this, the function of two devices 52 among Fig. 1 and 2 is substantially the same.Its difference is the condense configuration of stove 56 or the handling process in the station 18 of condensing.

According to Fig. 1, or the buffer storage 24 that in the gate channel 32 of mold 10, is provided for adding cast material 12, or an independent container that can be connected with mold 10 is set, the latter partly is marked with cast material 12.The stove 56 that condenses has a plurality of overpressure means 28 or pneumatic mechanism 34, by they to buffer storage 24 beats apply overvoltage 26.

Here among the embodiment of Xuan Zeing, in the zone at casting station 14, be provided with a temperature sensor 60, it detects the temperature of mold 10, and will improve the overvoltage that is produced in buffer storage 24 by overpressure means 28 when temperature is too high, or correspondingly reduces pressure when temperature is low.Can avoid thus: for example the cast material 12 of crossing low temperature or be thin liquid under excess pressure situation in the buffer storage 24 when mold 10 is forced out by the venthole of mold 10, and above-mentioned situation can cause little by little vacancy and make parts become waste product of mold 10.

The station 18 or the operation principle of the stove 56 that condenses of condensing is as follows.In buffer storage 24, the cast material 12 of respective amount is transported together, so that compensation is in the contraction of the duration of coagulation appearance of the cast material 12 in the chamber 30 that is arranged in mold 10.

In the stove 56 that condenses, by conveying device 58 progressively or beat ground by condense the station 56 each mold 10 that is sent to stop position on, be provided with a pneumatic mechanism 34 that can rise or fall, it is docked on the gate channel 32 of mold 10 and this gate channel or container is applied additional cast material 12 by overvoltage 26 or compressed air.Duration of coagulation at afterwards foundry goods 38 will have the cast material 12 of respective amount to be pressed in the chamber 30 of mold 10 again.

Conveying device 58 each beat from a bus stop to next bus stop, overpressure means 28 or pneumatic mechanism 34 at first break away from connection, reach on the buffer storage 24 that then is connected in the next mold.Foundry goods 38 are condensed after leaving the stove 56 that condenses, and wherein leave minimum residue cast material 12 in gate channel 32, and it can manually or mechanically be cut by an instrument.

With Fig. 1 differently, according to Fig. 2, after this mold 10 leaves casting station 14, be connected a buffer storage 24 with mold 10 especially its gate channel 32, the latter has an output channel 36.Buffer storage 24 is configured to have the overvoltage 26 of one, especially compressed-air actuated loader as the cast material pressure reservoir, and can manually or be mechanically connected on the mold 10.Mold 10 stands 18 to next bus stop operation by condensing serially or from a bus stop now, here the embodiment with Fig. 1 is opposite, the cast material 12 of respective volume moves to the chamber 30 of mold 10, with compensate for shrinkage continuously from buffering memory 24 now.This buffer storage is connected with mold 10 disengagements after leaving the stove 56 that condenses, and is cleaned and refills cast material 12 and also use overvoltage 26, load as compressed air.This buffer storage 24 is for example once being sent to the approaching side of the stove 56 that condenses in the circulation, so that can be connected with a mold 10 again thus.

These two devices or the difference of method mainly are: the chamber 30 of the retention period mold in mold is condensing stove 56 loads with overvoltage 26 discontinuously or continuously.With the traditional method or the difference of device be: the stove 56 that condenses is not entirely to be in overvoltage 26 effects down, but each mold 10 itself loads with overvoltage 26, and the stove 56 that condenses is worked under atmospheric pressure 22 effects.

According to described the present invention, be not only and have advantage aspect the simple structure of the stove 56 that condenses that can under atmospheric pressure 22 effect, work, and it is also advantageous in that mold itself does not need overvoltage 26 sealings.Even can, exhaust passage or steam vent additionally are set in mold 10, the latter makes chamber 30 be connected with atmospheric pressure 22, and the air that may inject in the cast material 12 in chamber 30 is leaked out by this exhaust passage.

And can select particularly advantageous structure to a certain extent for heater 20, for example infrared radiator is arranged in the stove 56 that condenses in this wise, promptly makes the zone of gate channel 32 of mold 10 be applied in less thermal energy than the zone of the mold 10 that deviates from gate channel 32.This mainly has such advantage; The place ahead of condensing starts from away from the position of gate channel 32 and from advancing to the direction of gate channel 32 here.In this way, cast material 12 can add to the chamber 30 of mold 10, with compensate for shrinkage from buffering memory 24 or material pressure memory at any time.

Claims (34)

1. be used to the method for pouring into a mould a foundry goods or enclosing casting/parts of casting, inject a mold (10) with cast material (12), and cast material (12) condenses in mold (10), wherein mold (10) is injected into cast material (12) in a casting station (14), be transported to the station of condensing (18) from casting station (14) with at least one heater (20), and the mold (10) that will inject cast material (12) in the station of condensing (18) heats with heater (20), it is characterized in that: the station of condensing (18) are under the atmospheric pressure, mold (10) has a buffer storage (24) or mold (10) is connected with a buffer storage (24), this buffer storage is marked with cast material (12) at least in part, and at least temporarily uses overvoltage (26) loading that is higher than atmospheric pressure (22) when mold (10) this buffer storage of retention period in the station of condensing (18).

2. according to the method for claim 1, it is characterized in that: buffer storage (24) is that the part of mold (10) or be integrated in the mold (10) or with mold (10) is connected.

3. according to the method for claim 2, it is characterized in that: mold (10) has a chamber (30) that is used to hold cast material (12), and have a gate channel (32) that is used to make cast material (12) injection chamber (30), wherein buffer storage (24) is integrated in the gate channel (32) or with it and is connected.

4. according to one method in the above claim, it is characterized in that: the station of condensing (18) have an overpressure means (28), and the latter is connected with buffer storage (24) or with mold (10).

5. according to the method for claim 4, it is characterized in that: overpressure means (28) has a pneumatic mechanism (34) that can rise and/or descend, and this pneumatic mechanism is connected with buffer storage or gate channel (32) in the station of condensing (18).

6. according to one method in the above claim, it is characterized in that: mold (10) beat ground and/or stepping ground are transmitted by the station of condensing (18), and wherein each stop position to mold (10) disposes an overpressure means (28) or pneumatic mechanism (34) in the station of condensing (18).

7. according to the method for claim 6, it is characterized in that: corresponding overpressure means (28) and/or corresponding pneumatic mechanism (34) at first are connected with buffer storage (24) and/or mold (10) and then break away from and be connected on each stop position.

8. according to the method for claim 1, it is characterized in that: buffer storage (24) but be the parts of an independent operation, wherein these parts or the cast material in these parts (12) load with overvoltage (26).

9. according to the method for claim 1 or 8, it is characterized in that: buffer storage (24) has an output channel (36) and/or a valve gear, and the retention period buffer storage is connected with mold (10), gate channel (32) in the station (18) in (18) porch, the station of condensing and when mold (10) is condensing.

10. according to claim 1, one method is characterized in that: is connected with mold (10) disengagement in the station of condensing (18) exit buffer storage (24) stop expiration in mold (10) is condensing station (18) after in 8,9.

11. the method according to claim 10 is characterized in that: the buffer storage (24) of throwing off connection is cleaned and/or injects cast material (12) and also loads with overvoltage (26), and is connected with a mold (10) again in the porch of the station of condensing (18).

12. according to claim 1, one method in 8 to 11, it is characterized in that: mold (10) is transmitted through the station of condensing (18) basically continuously.

13., it is characterized in that according to one method in the above claim: at mold (10) after the station of condensing (18) output, foundry goods (38) demoulding and cut away the casting pressing port piece of existence from mold (10).

14. according to one method in the above claim, it is characterized in that: mold (10) is configured to combination die.

15. according to one method in the above claim, it is characterized in that: mold (10) has the exhaust passage, they make the chamber (30) of mold (10) be connected with atmospheric pressure (22).

16. according to one method in the above claim, it is characterized in that: the volume of cast material is determined size like this, i.e. contraction at the cast material (12) of chien shih setting period in mold (10) or its chamber (30) is compensated, wherein in the scope between 2% to 5% of the volume of the cast material (12) of this volume of cast material (12) in being injected into mold (10) or its chamber (30).

17. according to one method in the above claim, it is characterized in that: the heater (20) with station (18) of condensing loads mold (10) with certain temperature fall.

18. according to one method in the above claim, it is characterized in that: the temperature of heater (20) is greater than the temperature in the zone of gate channel (32) in the zone of the section that deviates from gate channel (32) of mold (10).

19. according to one method in the above claim; it is characterized in that: a plurality of molds or casting die part stepping ground or continuously, in a circulation route, remove to stand and also pass through one or more following stations (14) and the station of condensing (18) by casting: preheating station (40); the set station (42) of mold (10); demoulding station (44); sclerosis station (46), mold purifying station (48) and/or mold loopback station (50).

20. according to one method in the above claim, it is characterized in that: the overvoltage of buffer storage (24) is controlled or be conditioned according to the mould temperature.

21. the method according to claim 20 is characterized in that: the mistake of buffer storage (24) is pressed in mold (10), and to enter the station of condensing (18) preceding measured.

22. according to one method in the above claim, it is characterized in that: the mistake of buffer storage (24) is pressed in each station of mold (10) and can be differently regulated.

23. be used for implementing device (52) according to the method for above claim one, it has a casting chamber (54), a stove that condenses (56) and a conveying device (58), this conveying device is used for mold (10) being transported to the stove that condenses (56) by casting chamber (54) and carrying and pass the stove that condenses (56), it is characterized in that: the stove that condenses (56) is under the atmospheric pressure (22) and as one-way fired furnace and constitutes, and mold (10) is connected with buffer storage (a 24) formation that is marked with cast material (12) at least in part in the stove that condenses (56), and wherein buffer storage (24) or mold (10) originally at least temporarily use overvoltage (26) to load in the stove that condenses (56).

24. the device according to claim 23 is characterized in that: buffer storage (24) is integrated in the gate channel (32) of mold (10).

25. device according to claim 23, it is characterized in that: the stove that condenses (56) has a plurality of overpressure means (28) that are provided with along the transport path of mold (10), is transferred to mold (10) stepping by stove that condenses (56) and overpressure means (28) one after the other to be connected and to throw off connection with buffer storage (24) or mold (10).

26. the device according to claim 23 is characterized in that: buffer storage is a container that loads with overvoltage (26), and it is filled with cast material (12) at least in part.

27. the device according to claim 24 is characterized in that: buffer storage (24) enters at mold (10) that the stove that condenses (56) is preceding to be connected with mold (10), and is connected with the mold disengagement from the stove that condenses (56) back of coming out at mold (10).

28. according to one device in the claim 23 to 27, it is characterized in that: mold (10) is subjected to the effect of a temperature fall or thermograde in the stove that condenses (56).

29. according to one device in the claim 23 to 28, it is characterized in that: the heater (20) of the stove that condenses (56) additionally has an infrared heater or radiator.

30., it is characterized in that: use casting resin as cast material (12) according to one device in the claim 23 to 29.

31. according to one device in the claim 23 to 30, it is characterized in that: mold (10) has one or more exhaust passages, they make the chamber (30) of mold (10) be connected with atmospheric pressure (22).

32., it is characterized in that according to one device in the claim 23 to 31: buffer storage (24) continuously or beat ground load with overvoltage (26).

33. according to one device in the claim 23 to 32, it is characterized in that: mold (10) carries out the filling of cast material (12) under negative pressure or vacuum (16) in casting chamber (54).

34. according to one device in the claim 23 to 33, it is characterized in that: in the zone of casting chamber (54), be provided with a temperature sensor (60), it detects the temperature of mold (10), and temperature value is imported overpressure means (28), be used for control or regulate the pressure of buffer storage (24).

Images