CN104203455A - Molding method and molding apparatus - Google Patents
Molding method and molding apparatus Download PDFInfo
- Publication number
- CN104203455A CN104203455A CN201380018662.5A CN201380018662A CN104203455A CN 104203455 A CN104203455 A CN 104203455A CN 201380018662 A CN201380018662 A CN 201380018662A CN 104203455 A CN104203455 A CN 104203455A
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- Prior art keywords
- motlten metal
- coupling part
- space
- metal
- pump
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Classifications
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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
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/203—Injection pistons
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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
- B22D17/14—Machines with evacuated die cavity
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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
- B22D17/2076—Cutting-off equipment for sprues or ingates
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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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
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
Abstract
A molding apparatus (30) is configured so as to form a molten metal holding space (41a) by dividing the inside of a connecting portion (41) into the molten metal holding space (41a) and a molten metal supply port-side space (41b) by closing an on-off valve (42), and pump up molten metal (5) from a molten metal furnace (50) into the molten metal holding space (41a) of the connecting portion (41) with a pump (40). Then a pressure of the molten metal (5) that has been pumped up into the molten metal holding space (41a) is reduced by a pressure-reducing portion, and the molten metal holding space (41a) inside the connecting portion (41) is communicated with a molten metal supply port (6) of an injection sleeve (2) by opening the on-off valve (42), and the molten metal (5), the pressure of which has been reduced in the molten metal holding space (41a), is supplied into the injection sleeve (2).
Description
Technical field
The present invention relates to casting method and casting device.More specifically, the present invention relates to motlten metal to inject die cast method and the die cast device in the die cavity of mould.
Background technology
Technology is used in typical die cast as described below.The motlten metal of fixed amount is admitted to shot sleeve by the feeding molten metal mouth of shot sleeve.Complete after the supply of motlten metal, advance injection most advanced and sophisticated by drive unit with the scheduled time, under high pressure motlten metal is injected to the die cavity (Japanese patent application referring to publication number as 2003-290899 (JP 2003-290899 A) of mould from shot sleeve, publication number is the Japanese patent application of 2005-46905 (JP 2005-46905 A), and publication number is the Japanese patent application of 2011-131265 (JP 201 1-131265 A)).
The casting device of describing in JP 2003-290899 A is configured to, and by ladle pot, motlten metal is pumped from motlten metal stove, and utilizes this ladle pot motlten metal to be sent into the feeding molten metal mouth of shot sleeve.But, utilize said structure, in the time that motlten metal is sent into shot sleeve from ladle pot, motlten metal has contacted atmosphere.Like this, the temperature of motlten metal has reduced, and due to the oxide-film forming on motlten metal, and the cause of the hydrogen dissolving in motlten metal, the Quality Down of product.In addition,, in order to reduce the amount of the hydrogen dissolving in motlten metal, need to be used for inert gas to inject the process of motlten metal.
On the other hand, the casting device of describing in JP 2005-46905 A and JP 2011-131265 A is configured to, make feeding molten metal pipe directly connect the feeding molten metal mouth of shot sleeve, and motlten metal is through this feeding molten metal pipe feed, therefore its (, motlten metal) will not contact atmosphere.But, utilize this structure, the product quality that also can not sufficiently suppress to cause because of above-mentioned oxide-film and dissolved oxygen declines, and this is because motlten metal still contacts with the air in motlten metal supply pipe.
Summary of the invention
Therefore, the invention provides a kind of casting method and casting device that can utilize simple architecture advances product quality.
A first aspect of the present invention relates to a kind of casting method that uses casting device, and described casting device has: with the mould of die cavity; Shot sleeve, this shot sleeve has feeding molten metal mouth, and is communicated with described die cavity; Motlten metal stove, has motlten metal in this motlten metal stove; Coupling part, thus this coupling part by making its one end be connected to described motlten metal stove, the other end is connected to the position relative with described feeding molten metal mouth described motlten metal stove and described shot sleeve is coupled together; Pump, it is arranged in described coupling part, and described pump pump from described motlten metal stove is got motlten metal; Valve, it is arranged in described coupling part, and in described coupling part, forms motlten metal maintenance space, for the motlten metal that keeps being pumped into by described pump; Decompression part, it is arranged in the part at motlten metal maintenance place, space in described coupling part, and described decompression part makes described motlten metal keep the pressure decreased in space.Described casting method comprises: by making valve closure, form motlten metal and keep space in described coupling part; Keep space with the described motlten metal that described pump pumps into described coupling part by motlten metal from described motlten metal stove; Utilize described decompression part, make to pump into the pressure decreased that described motlten metal keeps the motlten metal in space; By valve is opened, the motlten metal that is communicated with described coupling part keeps the described feeding molten metal mouth of space and described shot sleeve; And the motlten metal that its pressure has been reduced within described motlten metal keeps space is sent in described shot sleeve.
And, aspect above-mentioned in, the pump of described motlten metal is got and can be comprised: will pump into described motlten metal with the motlten metal of described motlten metal equivalent that injects described die cavity and keep in space.
And, aspect above-mentioned in, the reduction of described pressure of molten metal can comprise: during pressure decreased, by operating described pump, motlten metal is stopped to the motion of described coupling part from described motlten metal stove.
And, aspect above-mentioned in, described casting method further comprises: motlten metal is injected in die cavity; Described motlten metal is solidified in described die cavity; Make the foundry goods and the mold releasability that are formed by the motlten metal solidifying in described die cavity; And releasing agent is coated in to the inside of described die cavity.And the motlten metal in next circulation keeps the pump of formation, the motlten metal in space to get and the reduction of pressure of molten metal is carried out in the time just injecting, solidify, depart from and apply wherein one.
Second aspect present invention relates to a kind of casting device, comprising: mould, and it has die cavity; Shot sleeve, it has feeding molten metal mouth, and described shot sleeve is communicated with described die cavity; Motlten metal stove, has motlten metal in this motlten metal stove; Coupling part, thus this coupling part by making its one end be connected to described motlten metal stove, the other end is connected to the position relative with described feeding molten metal mouth described motlten metal stove and described shot sleeve is coupled together; Pump, it is arranged in described coupling part, and described pump pumps into described coupling part by motlten metal from described motlten metal stove, and by coupling part, motlten metal is sent into described shot sleeve; Valve, it is arranged in described coupling part, and described valve forms motlten metal and keeps space in described coupling part, for the motlten metal that keeps being pumped into by described pump; And decompression part, it is arranged in the part at the maintenance of motlten metal described in described coupling part place, space, and described decompression part makes described motlten metal keep the pressure decreased in space.Described shot sleeve carries out motlten metal to inject the operation of described die cavity.Described motlten metal keeps space, and by making, valve is closed to be formed.The described motlten metal that motlten metal is pumped into described coupling part by described pump keeps space.Described valve makes the motlten metal of described coupling part keep space to be communicated with the feeding molten metal mouth of described shot sleeve by opening, and the motlten metal that its pressure has been reduced within described motlten metal keeps space is sent into described shot sleeve.
According to above-mentioned aspect, described casting method and casting device can utilize simple mechanism to improve the quality of product.
Brief description of the drawings
Below with reference to accompanying drawing, feature, advantage and technology and the industrial significance of example embodiment of the present invention described, in figure, similar Reference numeral represents similar parts, and wherein:
Fig. 1 is the cutaway view of showing casting device according to an illustrative embodiment of the invention;
Fig. 2 is the flow chart of showing reduced pressure casting method;
Fig. 3 is the flow chart of showing the process of carrying out in the time pouring into motlten metal.
Detailed description of the invention
Next, exemplary embodiment of the present invention will be described.Technical scope of the present invention is not limited to following exemplary embodiment.The four corner that is truly intended to the technical elements of expressing has broadly been contained in the clear the present invention who presents of this description and accompanying drawing.
[structure of reduced pressure casting apparatus 30]
Below with reference to Fig. 1, reduced pressure casting apparatus 30 is according to an illustrative embodiment of the invention described.In this manual, for clarity sake, the right side of Fig. 1 will be described to the right side of reduced pressure casting apparatus 30, and the left side of Fig. 1 will be described to the left side of reduced pressure casting apparatus 30.
As shown in Figure 1, die cavity 4 is formed in the mould 1 of reduced pressure casting apparatus 30.That be communicated with die cavity 4, be roughly columniform shot sleeve 2 be set to prominent to the left.In other words, the inside of shot sleeve 2 is connected to the inside of die cavity 4 in a continuous manner.And reduced pressure casting apparatus 30 is configured to, by making short cylindrical shape injection end 3 slide and motlten metal 5 is pushed out towards the right side in shot sleeve 2, by motlten metal 5, for example aluminium sent in shot sleeve 2, inject die cavity 4.
Feeding molten metal mouth 6 is formed in shot sleeve 2.Be described motlten metal 5 being sent into shot sleeve 2 from this feeding molten metal mouth 6 by coupling part 41 after a while.Back shaft 9 inserts in shot sleeve 2, and controlled to be performed device, for example cylinder or hydraulic cylinder (not shown) drive advance and retreat.And, be arranged on injection end 3 in the back shaft 9 end portion axial direction in shot sleeve 2 and slide.
For air is set to the die cavity 4 through mould 1 from the air entry 16 of die cavity 4 sucking-offs.And switch valve 17 is arranged on the path that die cavity 4 and air entry 16 are linked together.Air entry 16 is connected with air-breathing part (being low pressure tank 21 and vacuum valve 22 in this exemplary embodiment), thereby makes the internal communication of air-breathing part and die cavity 4.Switch valve 23 is arranged on the access path that low pressure tank 21 is connected with air entry 16, for this access path is opened or closed.And, by opening the switch valve 23 on access path, control together with injection, make the pressure in die cavity 4 start to decline.
Decompression die casting device 30 comprises motlten metal stove 50, coupling part 41 and electromagnetic pump 40, in described motlten metal stove 50, store motlten metal 5, described coupling part 41 by making its one end be connected to motlten metal stove 50, the other end connects as for the relative position of feeding molten metal mouth 6, motlten metal stove 50 and shot sleeve 2 are coupled together, described electromagnetic pump 40 is arranged in coupling part 41, and motlten metal 5 is pumped from motlten metal stove 50.Inward flange part and the electromagnetic pump 40 of coupling part 41 are made up of pottery.And, to control in conjunction with injection, electromagnetic pump 40 is by applying voltage, utilizing electromagnetic force that motlten metal 5 is pumped up to Inside coil.In this exemplary embodiment, use electromagnetic pump 40, still, used other pump, be all also feasible as used the displacement pump of rotor or the configuration of turbomolecular pump (being rotodynamic pump).In addition, in this exemplary embodiment, motlten metal stove 50 storing with the motlten metal of the state of isolated from atmosphere.
Coupling part 41 is managed 61 by knot and is connected to shot sleeve 2, and described knot pipe 61 has the bellows-type construction as absorption of vibrations part.More specifically, being formed as metal or ceramic insulation member 71 tubular, that be communicated with the feeding molten metal mouth 6 of shot sleeve 2 is arranged on shot sleeve 2.Further, knot pipe 61 is arranged on the upside of heat insulating component 71, is supporting coupling part 41.,, by making a side of the upper part of knot pipe 61, knot pipe 61 that coupling part 41 is positioned at be connected to the mid portion of coupling part 41, the other end of coupling part 41 is placed in the position near feeding molten metal mouth 6.Knot pipe 61 so forms, to make described bellows-type construction can extend, bounce back and bending, to absorb the upper part of knot pipe 61 or vibration and the distortion of end portion.
Switch valve 42 is used as such valve: it is formed for motlten metal 5 to remain on the motlten metal maintenance space 41a of 41 inside, coupling part, and described switch valve 42 is arranged in coupling part 41., in the time that switch valve 42 cuts out, the inside of coupling part 41 is divided into motlten metal and keeps space 41a and feeding molten metal mouth side space 41b, keeps space 41a thereby form motlten metal.And, coupling part 41 be configured such that when switch valve 42 be that motlten metal while opening, in coupling part 42 keeps space 41a and feeding molten metal mouth side space 41b to communicate with each other, so motlten metal keeps space 41a to be communicated with the feeding molten metal mouth 6 of shot sleeve 2.
And, in the time that the inside of coupling part 41 is divided into motlten metal and keeps space 41a and feeding molten metal mouth side space 41b by switch valve 42, make motlten metal keep the relief portion of the pressure decreased in the 41a of space to divide to be arranged on motlten metal to keep the part of the coupling part 41 that space 41a is positioned at.More specifically, the air entry 43 that keeps space 41a to be communicated with motlten metal is arranged in coupling part 41.This air entry 43 is connected with vavuum pump 46 with the low pressure tank 45 that forms decompression part., decompression part keeps space 41a to be communicated with by air entry 43 and motlten metal.Switch valve 44 is formed on the access path that low-voltage tube 45 is connected with air entry 43, and makes this access path break-make.By opening switch valve 44, to control in conjunction with injection, motlten metal keeps the pressure in the 41a of space to start to decline.
Described above according to the structure of the reduced pressure casting apparatus 30 of this exemplary embodiment, it is cast by realizing such injection operation: under the condition that the pressure in die cavity 4 declines by air entry, the motlten metal 5 of electromagnetic pump 40 being supplied with from motlten metal stove 50 with injection end 3 is towards right release, make motlten metal 5 enter shot sleeve 2 by coupling part 41, inject die cavity 5.
[using the reduced pressure casting method of reduced pressure casting apparatus 30]
Next, use is described according to the reduced pressure casting method of the reduced pressure casting apparatus 30 of this exemplary embodiment in connection with Fig. 1 and Fig. 2.
First,, in the step S1 of Fig. 2, make the But moving die of mould 1 contact with fixed die and the two is clamped together, to form die cavity 4.Next,, in the step S2 of Fig. 2, end lubricant application, in the inner edge surface of shot sleeve 2, is made to inject end 3 and slided smoothly.
Then,, in the step S3 of Fig. 2, electromagnetic pump 40 is sent into shot sleeve 2 by coupling part 41 by motlten metal 5 from motlten metal stove 50.After a while this motlten metal of detailed description is poured into process.
So in the step S4 of Fig. 2, by forming low pressure tank 21 and the vavuum pump 22 of air-breathing part, make the pressure drop in die cavity 4.More specifically, after motlten metal 5 is left standstill, by opening switch valve 23, utilizing low pressure tank 21 and vavuum pump 22 by the air sucking-off in die cavity 4, the pressure in die cavity 4 starts to decline.Starting before decompression, can be by for example, owing to being poured into and causing the motlten metal 5 of fluctuation to leave standstill a period of time (about a few second) in step S3.
Next, in the step S5 of Fig. 2, inject end 3 by utilization and promote motlten metal 5, motlten metal 5 is injected to die cavity 4, realize casting.More specifically, by actuate actuators (not shown), realize the injection operation of injection end 3, drive motlten metal 5 to be injected into die cavity 4, the Pressure Drop in die cavity 4 is to predetermined extent.
Then,, in the step S6 of Fig. 2, by closing switch valve 23, stop air to suck in die cavity 4 under the effect of low pressure tank 21 and vavuum pump 22, thereby cancel decompression state.By this process, motlten metal 5 is interior curing at die cavity 4.
In the step S7 of Fig. 2, by the But moving die of mould 1 is separated from fixed die, mould 1 is opened, and made by the foundry goods demoulding from mould forming at the interior curing motlten metal 5 of die cavity 4.Then, in the step S8 of Fig. 2, remove the product of die cavity 4 interior formation, die cavity 4 is applied to releasing agent, for next circulation.
[motlten metal dump method]
Next, the motlten metal dump method of the reduced pressure casting apparatus 30 that uses this exemplary embodiment is described in connection with Fig. 1 and Fig. 2.
First, in the step S101 of Fig. 3, by closing switch valve 42, be that motlten metal keeps space 41a and feeding molten metal mouth side space 41b by the internal separation of coupling part 41, form motlten metal and keep space 41a(motlten metal to keep space forming process).
Then, in the step S102 of Fig. 3, motlten metal 5 is pumped from motlten metal stove 50 with electromagnetic pump 40, pump into motlten metal and keep space 41a(pump to get process).In this exemplary embodiment, get in process at pump, be pumped to motlten metal maintenance space 41a with the motlten metal 5 of motlten metal 5 same amounts that will inject die cavity 4.
In this step S103 of Fig. 3, make the pressure decreased (motlten metal decompression process) of the motlten metal 5 that is pumped to motlten metal maintenance space 41a by decompression part subsequently.More specifically, keep the pressure in the 41a of space by the motlten metal of opening switch valve 44, start to reduce to be connected with vavuum pump 46 with low pressure tank 45, make motlten metal keep the pressure of the motlten metal 5 in the 41a of space to be declined.In this exemplary embodiment, by operate electromagnetic pump 40 in this motlten metal decompression process, the movement of the motlten metal from motlten metal stove 50 to coupling part 41 has stopped, therefore the decline that the motlten metal making due to utilization decompression part keeps the pressure in the 41a of space no longer picks up motlten metal 5 from motlten metal stove 50.
Then, in the step 104 of Fig. 3, by opening switch valve 42, make the motlten metal in coupling part 41 keep space 41a and feeding molten metal mouth side space 41b to communicate with each other, thereby keep space 41a to be communicated with (handshaking procedures) with the feeding molten metal mouth 6 of shot sleeve 2 motlten metal.Then,, in the step 105 of Fig. 3, drive electromagnetic pump 40 to keep the motlten metal 5 reducing in the 41a of space to be supplied to shot sleeve 2(to supply with process at motlten metal pressure)., this supply process becomes above-mentioned step S3.
In this exemplary embodiment, the motlten metal of step S101 keeps space forming process, the pump of step S102 is got process, and the motlten metal decompression process of step S103 is to carry out in the time carrying out a following wherein process of next circulation: the process of motlten metal 5 being injected to die cavity 4 in step S5, cancellation decompression state in step S6 also makes the curing process of motlten metal 5 in die cavity 4, in step S7 by the process in the interior curing cast member being formed by motlten metal 5 demoulding from mould 1 of die cavity 4, and the process that releasing agent is coated in to die cavity 4 inside in step S8.In other words, at step S5, to wherein one while carrying out of S8, the motlten metal that carries out next circulation keeps space forming process (being step S101), pump to get process (being step S102) and motlten metal decompression process (being step S103).
As mentioned above, pass through closing switch valve 42 according to the reduced pressure casting apparatus 30 of this exemplary embodiment, be that motlten metal keeps space 41a and feeding molten metal mouth side space 41b to form motlten metal maintenance space 41a by the internal separation of coupling part 41, and the motlten metal that utilizes electromagnetic pump 40 motlten metal 5 to be pumped into from motlten metal stove 50 to coupling part 41 keep space 41a.Subsequently, by decompression part, having been pumped up into motlten metal keeps the motlten metal 5 of space 41a to utilize decompression part that pressure is declined, motlten metal in coupling part 41 keeps space 41a to be communicated with the feeding molten metal mouth 6 of shot sleeve 2 by switch valve 42, and the motlten metal 5 that has reduced pressure within motlten metal keeps space 41a is admitted in shot sleeve 2.
As mentioned above, be configured to according to the reduced pressure casting apparatus 30 of this exemplary embodiment, motlten metal 5 is supplied with to shot sleeve 2 through coupling part 41 from motlten metal stove 50, motlten metal 5 is not contacted with atmosphere in the time pouring into.Therefore, the temperature that can suppress motlten metal 5 declines, and is formed on the oxide-film on motlten metal 5.In addition, can reduce the amount of the hydrogen dissolving in motlten metal 5, thereby suppress the decline of product quality.
And, in this exemplary embodiment, pumped up the motlten metal 5 entering in motlten metal maintenance space 41a and made pressure drop by decompression part.So, can suppress motlten metal 5 and contact with the air in coupling part 41, thereby further reduce in motlten metal 5 amount of the hydrogen dissolving, this makes the decline that further suppresses product quality be called possibility.A test of doing according to the application's applicant, by this exemplary embodiment with the structure of motlten metal 5 pressure decreaseds in coupling part 41 is compared, find this exemplary sub-fraction that makes water the amount of dissolving hydrogen can be reduced to the dissolved hydrogen tolerance in comparative construction.
And in this exemplary embodiment, the pressure of motlten metal 5 has all reduced after punching press each time (, each cycle), the time that therefore can shorten to injection and form, this has further suppressed the dissolving of hydrogen.That is, utilize simple structure, just can improve the quality of product according to the reduced pressure casting apparatus 30 of this exemplary embodiment.
And, in this exemplary embodiment, get in process at pump, will pump into motlten metal maintenance space 41a with the motlten metal 5 of motlten metal 5 same amounts that will inject die cavity 4.Therefore, can improve the efficiency of supply of motlten metal 5, thereby further reduce the amount of the hydrogen dissolving in motlten metal 5.
And, in this exemplary embodiment, in motlten metal decompression process, stop the movement from the kind peaceful palace of motlten metal 5 motlten metal stove 50 to coupling part 41 by operation electromagnetic pump 40.So, can be kept reliably for the motlten metal 5 of a punching press (, one-period), and keep being depressurized in the 41a of space at motlten metal.
And, in this exemplary embodiment, when the motlten metal of next circulation keeps space forming process (step S101), pump to get process (step S102) and motlten metal decompression process (step S103) carrying out, the step S5 that is carrying out execution is routinely to a process in S8.So within the circulation timei of the process of S8, the pressure of motlten metal 5 can decline at step S5.The amount of the hydrogen that, can dissolve in reducing motlten metal 5 not increasing circulation timei.
Claims (5)
1. the casting method that uses casting device, described casting device has: with the mould of die cavity; Shot sleeve, this shot sleeve has feeding molten metal mouth, and is communicated with described die cavity; Motlten metal stove, has motlten metal in this motlten metal stove; Coupling part, thus this coupling part by making its one end be connected to described motlten metal stove, the other end is connected to the position relative with described feeding molten metal mouth described motlten metal stove and described shot sleeve is coupled together; Pump, it is arranged in described coupling part, and described pump pump from described motlten metal stove is got motlten metal; Valve, it is arranged in described coupling part, and in described coupling part, forms motlten metal maintenance space, for the motlten metal that keeps being pumped into by described pump; Decompression part, it is arranged in the part at motlten metal maintenance place, space in described coupling part, and described decompression part makes described motlten metal keep the pressure decreased in space, and described casting method comprises:
By making valve closure, in described coupling part, form motlten metal and keep space;
Keep space with the described motlten metal that described pump pumps into described coupling part by motlten metal from described motlten metal stove;
Utilize described decompression part, make to pump into the pressure decreased that described motlten metal keeps the motlten metal in space;
By valve is opened, the motlten metal that is communicated with described coupling part keeps the described feeding molten metal mouth of space and described shot sleeve; And
The motlten metal that its pressure has been reduced within described motlten metal keeps space is sent in described shot sleeve.
2. casting method according to claim 1, is characterized in that, the pump of described motlten metal is got and comprised: will pump in described motlten metal maintenance space with the motlten metal of the described motlten metal equivalent of injecting described die cavity.
3. casting method according to claim 2, is characterized in that, the reduction of described pressure of molten metal comprises: during pressure decreased, by operating described pump, motlten metal is stopped to the motion of described coupling part from described motlten metal stove.
4. according to the casting method described in any one in claim 1 to 3, it is characterized in that, described method further comprises:
Motlten metal is injected in die cavity;
Described motlten metal is solidified in described die cavity;
Make the foundry goods and the mold releasability that are formed by the motlten metal solidifying in described die cavity; And
Releasing agent is coated in to the inside of described die cavity,
Wherein the motlten metal in next circulation keeps the pump of formation, the motlten metal in space to get and the reduction of pressure of molten metal is carried out in the time just injecting, solidify, depart from and apply wherein one.
5. casting device, comprising:
Mould, it has die cavity;
Shot sleeve, it has feeding molten metal mouth, and described shot sleeve is communicated with described die cavity;
Motlten metal stove, has motlten metal in this motlten metal stove;
Coupling part, thus this coupling part by making its one end be connected to described motlten metal stove, the other end is connected to the position relative with described feeding molten metal mouth described motlten metal stove and described shot sleeve is coupled together;
Pump, it is arranged in described coupling part, and described pump pumps into described coupling part by motlten metal from described motlten metal stove, and by coupling part, motlten metal is sent into described shot sleeve;
Valve, it is arranged in described coupling part, and described valve forms motlten metal and keeps space in described coupling part, for the motlten metal that keeps being pumped into by described pump; And
Decompression part, it is arranged in the part at the maintenance of motlten metal described in described coupling part place, space, and described decompression part makes described motlten metal keep the pressure decreased in space,
Wherein, described shot sleeve carries out motlten metal to inject the operation of described die cavity; Described motlten metal keeps space, and by making, valve is closed to be formed; The described motlten metal that motlten metal is pumped into described coupling part by described pump keeps space; Described valve makes the motlten metal of described coupling part keep space to be communicated with the feeding molten metal mouth of described shot sleeve by opening, and the motlten metal that its pressure has been reduced within described motlten metal keeps space is sent into described shot sleeve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012081398A JP5772683B2 (en) | 2012-03-30 | 2012-03-30 | Casting method and casting apparatus |
| JP2012-081398 | 2012-03-30 | ||
| PCT/IB2013/000382 WO2013144698A1 (en) | 2012-03-30 | 2013-03-13 | Molding method and molding apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104203455A true CN104203455A (en) | 2014-12-10 |
| CN104203455B CN104203455B (en) | 2016-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380018662.5A Expired - Fee Related CN104203455B (en) | 2012-03-30 | 2013-03-13 | Casting method and casting device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150083357A1 (en) |
| JP (1) | JP5772683B2 (en) |
| CN (1) | CN104203455B (en) |
| DE (1) | DE112013001797T5 (en) |
| WO (1) | WO2013144698A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106077489A (en) * | 2016-07-28 | 2016-11-09 | 巢湖市聚源机械有限公司 | A kind of automatization metal casting device |
| CN110769952A (en) * | 2017-06-16 | 2020-02-07 | 麦格纳国际公司 | Die casting furnace system with ultrasonic unit for improving molten metal quality |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5935776B2 (en) * | 2013-09-03 | 2016-06-15 | トヨタ自動車株式会社 | Die casting method and die casting apparatus |
| JP6135613B2 (en) | 2014-07-22 | 2017-05-31 | トヨタ自動車株式会社 | Die casting apparatus and die casting method |
| JP6179477B2 (en) * | 2014-07-31 | 2017-08-16 | トヨタ自動車株式会社 | Die casting equipment |
| JP6379847B2 (en) * | 2014-08-19 | 2018-08-29 | 宇部興産機械株式会社 | Casting equipment |
| PL3197620T3 (en) * | 2014-09-26 | 2021-06-14 | Pyrotek, Inc. | Molding machine and method for delivering molten metal |
| JP6317658B2 (en) * | 2014-10-15 | 2018-04-25 | 助川電気工業株式会社 | Vacuum casting equipment and vacuum casting method |
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| CN110769952A (en) * | 2017-06-16 | 2020-02-07 | 麦格纳国际公司 | Die casting furnace system with ultrasonic unit for improving molten metal quality |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150083357A1 (en) | 2015-03-26 |
| WO2013144698A1 (en) | 2013-10-03 |
| DE112013001797T5 (en) | 2014-12-24 |
| JP5772683B2 (en) | 2015-09-02 |
| CN104203455B (en) | 2016-09-21 |
| JP2013208646A (en) | 2013-10-10 |
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