CN116511464A - Aluminum alloy die casting die - Google Patents
Aluminum alloy die casting die Download PDFInfo
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- CN116511464A CN116511464A CN202310487570.7A CN202310487570A CN116511464A CN 116511464 A CN116511464 A CN 116511464A CN 202310487570 A CN202310487570 A CN 202310487570A CN 116511464 A CN116511464 A CN 116511464A
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- aluminum alloy
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- extrusion
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 71
- 238000004512 die casting Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005192 partition Methods 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims description 102
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000000498 cooling water Substances 0.000 description 30
- 230000009286 beneficial effect Effects 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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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
- B22D17/007—Semi-solid pressure die casting
-
- 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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2218—Cooling or heating equipment for dies
-
- 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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2227—Die seals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to the technical field of aluminum alloy die casting, and discloses an aluminum alloy die casting die, which comprises a fixed die and a movable die, wherein a cavity is formed between the fixed die and the movable die, a cooling cavity is connected to the fixed die, a water inlet hole and a water outlet hole are communicated to the cooling cavity, a plurality of lower partition plates and upper baffle plates are arranged in the cooling cavity at intervals in a crossing manner, a first gap formed by the lower partition plates and the cooling cavity is far away from the cavity, a second gap formed by the upper baffle plates and the cooling cavity is close to the cavity, the width of the first gap is larger than that of the second gap, the upper baffle plates are arranged at two ends close to the cooling cavity, and the water inlet hole and the water outlet hole are respectively positioned between two ends of the cooling cavity and the adjacent upper baffle plates; the problem that the aluminum alloy liquid is difficult to cool and shape and the production efficiency is reduced due to lower cooling effect in the die casting process of the existing die is solved.
Description
Technical Field
The invention relates to the technical field of aluminum alloy die casting, in particular to an aluminum alloy die casting die.
Background
The aluminum alloy die casting die is a production die for obtaining aluminum alloy parts with various shapes and sizes after the aluminum alloy heated to be liquid is injected into a die cavity by adopting a metal die and is cooled and solidified.
The aluminum alloy die casting mold generally comprises a fixed mold part and a movable mold part, wherein the movable mold part is arranged on a movable mold plate of the mold (equipment), the fixed mold is arranged on a fixed mold plate of the die casting equipment, the movable mold part and the fixed mold part are closed to form a pouring system and a cavity during molding, after the aluminum alloy part is cooled and molded, the fixed mold and the movable mold are separated, and aluminum alloy products are taken out by using modes of ejector pad ejection or rotary demolding ejection and the like. In the whole die-casting forming process, in order to improve the production efficiency of aluminum alloy parts, a cooling unit is additionally arranged in the die and used for shortening the cooling time of the liquid aluminum alloy and improving the production effect. However, in the aluminum alloy mold in the state of the art, the existing cooling unit has the problem of poor cooling effect.
Disclosure of Invention
The invention aims to provide an aluminum alloy die-casting die, which solves the problems that aluminum alloy liquid is not easy to cool and shape and the production efficiency is reduced because the cooling effect is lower in the die-casting process of the existing die.
In order to achieve the above purpose, the invention adopts the following technical scheme: the aluminum alloy die casting die comprises a fixed die and a movable die, a cavity is formed between the fixed die and the movable die, a cooling cavity is connected to the fixed die, a water inlet and a water outlet are formed in the cooling cavity in a communicating mode, a plurality of lower partition plates and upper baffle plates are arranged in the cooling cavity at intervals in a crossing mode, a first gap formed by the lower partition plates and the cooling cavity is far away from the cavity, a second gap formed by the upper baffle plates and the cooling cavity is close to the cavity, the width of the first gap is larger than that of the second gap, the two ends close to the cooling cavity are upper baffle plates, and the water inlet and the water outlet are respectively located between two ends of the cooling cavity and the adjacent upper baffle plates.
The beneficial effect of this scheme is: 1. the cooling water can continuously absorb the heat of the liquid aluminum alloy in the cavity to gradually raise the temperature in the process of flowing through the cooling cavity, so that the lower partition plate and the upper baffle plate are arranged in the cooling cavity at intervals in a crossing way, meanwhile, the water inlet holes and the water outlet holes are respectively communicated between the two ends of the cooling cavity and the adjacent upper baffle plate, when the cooling water enters the cooling cavity at the first time, the cooling water firstly flows through a second gap close to the cavity, and the cooling water flowing through the second gap is lower than the cooling water in the downstream cavity in temperature in the flowing process of the cooling water, so that the cooling water with lower temperature contacts with the cavity, and the heat in the cavity can be effectively absorbed and taken away, thereby playing the role of improving the heat absorption effect of the cooling cavity.
2. Simultaneously, the width of the first gap is larger than that of the second gap, so that the cooling water can flow through the second gap at a speed larger than that of the first gap, the cooling water can leave rapidly after the second gap absorbs the heat in the cavity, and the cooling effect of the cooling cavity is further improved.
Preferably, the device further comprises a cooling plate, wherein the cooling plate is connected to the fixed die, and the cooling cavity is formed in the cooling plate; the cooling cavity is provided with two, and two cooling cavities are arc.
The beneficial effect of this scheme is: by arranging two cooling cavities, the flow path of the cooling water in the cooling cavities can be shortened, so that the cooling water is discharged before the temperature is not increased too much, the heat absorption capacity of the cooling water is ensured, and the cooling effect of the cooling cavities is improved. Meanwhile, the cooling cavity is arranged into an arc shape, and the two arc-shaped cooling cavities can be spliced into a circular ring, so that the circular ring-shaped cooling cavity can have a more uniform heat absorption effect.
Preferably, the mold further comprises a plurality of mold cores, each mold core is provided with a connecting mechanism, the mold cores are respectively fixed on the fixed mold by the connecting mechanisms, and the fixed mold cores are all positioned in the mold cavities.
The beneficial effect of this scheme is: the connecting mechanism is one-to-one fixed on the fixed die, and can realize independent replacement after the core is damaged, compared with the mode that the core is integrally replaced by taking and replacing a core connecting plate in the prior injection mold, the mold core is more convenient to replace and higher in efficiency due to independent fixation.
Preferably, the connecting mechanism comprises a threaded double plug, the threaded double plug is fixed on the mold core, and the fixed mold is provided with a plurality of stepped threaded holes.
The beneficial effect of this scheme is: the stability of being connected between core and cover half not only can be improved to screw double plug, and the fixed section of step can also cushion the stress that the in-process aluminum alloy produced to the core to reduce the core because of stress concentration, take place cracked possibility, play extension core life's effect.
Preferably, the device further comprises an extrusion unit, wherein the extrusion unit comprises an extrusion pin and a cylinder, and the extrusion pin is connected with an output shaft of the cylinder.
The beneficial effect of this scheme is: the extrusion pin in the extrusion unit is driven by the air cylinder to exhaust the wall thickness of the aluminum alloy part in a local extrusion mode so as to enhance the density of the aluminum alloy.
Preferably, one end of the extrusion pin far away from the cylinder is smaller than one end of the extrusion pin close to the cylinder, and a conical transition section is arranged between the two ends of the extrusion pin.
The beneficial effect of this scheme is: the conical transition section can effectively reduce the condition of breakage of the extrusion pin caused by stress concentration, and prolong the service life of the extrusion pin.
Preferably, the device further comprises a connecting disc, wherein the connecting disc is connected with an output shaft of the air cylinder, and a plurality of extrusion pins are arranged on the connecting disc.
The beneficial effect of this scheme is: the purpose of increasing the number of extrusion pins is achieved by connecting the plurality of extrusion pins on the positioning plate and the connecting plate, so that the extrusion efficiency of the extrusion unit on the wall thickness of the semi-solid aluminum alloy can be improved, the extrusion uniformity can be improved by enlarging the extrusion surface, the density inside the wall thickness of the aluminum alloy is increased uniformly, and the output quality of the aluminum alloy part is further improved.
Preferably, the connecting device further comprises a positioning plate, wherein the positioning plate is detachably connected with the connecting plate, a plurality of connecting holes are formed in the positioning plate, the extrusion pins respectively pass through the connecting holes in a sealing mode, and the connecting holes are horn-shaped.
The beneficial effect of this scheme is: the connecting hole loudspeaker-shaped contact surface not only can improve the stability of fixing the extrusion pin, but also can perform horizontal centering and positioning on the extrusion pin so as to ensure that the extrusion point of the extrusion pin cannot deviate when the semi-solid aluminum alloy is extruded in the horizontal direction, thereby further ensuring the extrusion effect, simultaneously, the loudspeaker-shaped transition section can buffer the stress of the aluminum alloy on the extrusion pin in the injection molding process, thereby reducing the possibility of fracture of the extrusion pin and prolonging the service life.
Preferably, the device further comprises a protective sleeve, wherein the protective sleeve is fixed in the fixed die, and the extrusion pin slides in the protective sleeve.
The beneficial effect of this scheme is: the protective sleeve prevents the extrusion pin from directly contacting with the extrusion channel of the movable mould, so that the abrasion degree of the extrusion pin is reduced, and the service life of the extrusion pin is further prolonged.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is a three-dimensional view of a cooling chamber according to embodiment 1 of the present invention;
FIG. 3 is a flow chart of cooling water in the cooling chamber according to embodiment 1 of the present invention;
FIG. 4 is a three-dimensional view of a mandrel according to example 1 of the present invention;
FIG. 5 is a front view of the extrusion pin of example 1 of the present invention;
FIG. 6 is a cross-sectional view of a threaded double plug according to example 2 of the present invention;
FIG. 7 is a three-dimensional view of a land according to example 3 of the present invention;
fig. 8 is a cross-sectional view of the connection pad of embodiment 3 of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the mold comprises a movable mold 1, a fixed mold 2, a cavity 21, a core 22, a threaded double plug 221, a stepped threaded hole 23, an extrusion channel 24, a protective sleeve 241, a cooling plate 3, a protrusion 31, a cooling cavity 32, a lower partition 33, a first gap 331, an upper baffle 34, a second gap 341, a sealing plate 35, a water inlet 351, a water outlet 352, an extrusion pin 4, a conical transition section 41, an air cylinder 42, a coupling 43, a connecting disc 5, a positioning disc 51, a connecting hole 511 and a sliding rail 6.
Example 1
The embodiment 1 is basically shown in fig. 1-4, and the aluminum alloy die casting die shown in fig. 1 comprises a frame (not shown in the figure), a sliding rail 6, a fixed die 2 and a movable die 1, wherein the sliding rail 6 is horizontally welded and fixed on the frame, the movable die 1 is slidingly connected on the sliding rail 6, and the fixed die 2 is fixedly connected on the frame; simultaneously, still fixedly connected with hydraulic power control system in the frame, hydraulic power control system drive cover half 2 is reciprocating cycle motion on slide rail 6, and when cover half 2 and movable mould 1 paste, be formed with a die cavity 21 and injection molding mouth between cover half 2 and the movable mould 1, can pour into the die cavity 21 with liquid aluminum alloy through the injection molding mouth into, wait that liquid aluminum alloy cools in the mould and takes shape, the drawing of patterns can obtain aluminum alloy part.
As shown in fig. 2, one side of the fixed mold 2, which is away from the cavity 21, is connected with a cooling plate 3 through a screw, a bulge 31 is arranged on the cooling plate 3, a groove is formed in the fixed mold 2, and the bulge 31 is just embedded in the groove; the inside of the bulge 31 is provided with two cooling cavities 32, in the embodiment, the two cooling cavities 32 are arc-shaped, the two arc-shaped cooling cavities 32 are spliced to form a circular cooling cavity 32, and the circular ring is coaxial with the fixed die 2, so that the effect of uniformly absorbing heat is achieved; the cooling plate 3 is also fixedly connected with a circular sealing plate 35 through threads, and the sealing plate 35 can just seal and cover the two arc-shaped cooling cavities 32 together after being fixed. A lower baffle plate 33 and two upper baffle plates 34 are fixedly arranged in each cooling cavity 32 through welding, the lower baffle plate 33 is arranged between the two upper baffle plates 34, a first gap 331 is formed between the lower baffle plate 33 and the bottom of the sealing cover, a second gap 341 is formed between the upper baffle plates 34 and the bottom of the cooling cavity 32, the first gap 331 is far away from the cavity 21, the second gap 341 is close to the cavity 21, and the width of the first gap 331 is larger than that of the second gap 341; two water inlet holes 351 and two water outlet holes 352 are formed in the sealing plate 35, the water inlet holes 351 are communicated with cooling water inlet ends, the water outlet holes 352 are communicated with cooling water outlet ends, and the water inlet holes 351 and the water outlet holes 352 are respectively located between two ends of the cooling cavity 32 and the adjacent upper baffle plates 34. The cooling water gradually increases in temperature by absorbing the heat of the liquid aluminum alloy in the cavity 21 during flowing through the cooling cavity 32 from left to right, that is, the temperature of the cooling water at the left side of the cooling cavity 32 is always lower than that of the cooling water at the right side, as shown in fig. 3, the cooling water flows through the second gap 341, the first gap 331 and the second gap 341 in sequence from the water inlet hole 351 to the water outlet hole 352, so that the cooling water flowing through one end close to the cavity 21 is relatively low in temperature, and the effect of improving the heat absorbing effect of the cooling cavity 32 is achieved; because the width of the first gap 331 is greater than that of the second gap 341, the cooling water will flow through the second gap 341 more than that flowing through the first gap 331, so as to ensure that the cooling water can leave rapidly after the second gap 341 absorbs the heat in the cavity 21, thereby further improving the cooling effect of the cooling cavity 32.
As shown in fig. 4, a plurality of cores 22 are arranged in the cavity 21, and the existence of the cores 22 ensures that necessary holes are reserved on the formed aluminum alloy part; each core 22 is connected with a connecting mechanism, the core 22 is fixed on the fixed die 2 one by the connecting mechanism, and the core 22 can be independently replaced after being damaged; the concrete way of fixing the core 22 by the connecting mechanism in this embodiment is: the connecting end of the core 22 and the fixed die 2 is provided with threads, and the fixed die 2 is provided with a plurality of threaded holes, namely, the fixation of the core 22 and the fixed die 2 is realized through the threads. Compared with the existing injection mold, the mode of integrally replacing the core 22 by taking and replacing the core 22 and connecting plates is mostly adopted, and the core 22 can be replaced more conveniently and more efficiently by independently fixing the mold.
Meanwhile, the extrusion unit is also included, as described above, a plurality of cores 22 are arranged in the cavity 21, and the part without the cores 22 can form a local wall thickness part of the aluminum alloy part after the liquid aluminum alloy is cooled and formed, and the wall thickness part is internally shrunken, so that the exhaust is required to be carried out in a local extrusion mode to enhance the density of the aluminum alloy. The extrusion unit comprises an extrusion pin 4 and an air cylinder 42, wherein the air cylinder 42 is fixed on the frame through a bolt, an output shaft of the fixed rear air cylinder 42 is parallel to the sliding rail 6, one end of the extrusion pin 4 is fixed with the air cylinder 42 through a coupler 43, and the end part of the other end of the extrusion pin 4 is arranged in a circular arc shape; as shown in fig. 5, in this embodiment, an extrusion channel 24 is formed on the movable mold 1, a sealing tube is embedded in the extrusion channel 24, when the liquid aluminum alloy is cooled to be semi-solid, the hydraulic power control system pulls out the sealing tube, and the air cylinder 42 can drive the extrusion pin 4 to continuously pass through the extrusion channel 24 and locally extrude the semi-solid aluminum alloy, so that the gas in the wall thickness of the aluminum alloy is discharged and densified, and the quality of the formed aluminum alloy part is improved;
in addition, the section of the extrusion pin 4 far away from the air cylinder 42 is smaller than the section of the extrusion pin 4 connected with the air cylinder 42, the relatively smaller section is the extrusion section, a conical transition section 41 is arranged between the two sections of the extrusion pin 4, and the conical transition section 41 can effectively reduce the condition that the extrusion pin 4 is broken due to stress concentration and prolong the service life of the extrusion pin 4. The extrusion channel 24 is internally provided with a protective sleeve 241 in an interference fit manner, the protective sleeve 241 is made of rubber, the diameter of the inner wall of the protective sleeve 241 is the same as the diameter of the extrusion section of the extrusion pin 4, and the sealing tube is embedded in the protective sleeve 241; the protection sleeve 241 prevents the extrusion pin 4 from directly contacting with the extrusion channel 24 of the movable die 1, so as to reduce the abrasion degree of the extrusion pin 4, and further prolong the service life of the extrusion pin 4. The protective sheath 241 needs to be replaced periodically to avoid solidification of a small amount of semi-solid aluminum alloy after being brought into the protective sheath 241 by the extrusion pin 4 during extrusion, impeding the reciprocating movement of the extrusion pin 4 in the protective sheath 241.
The specific implementation process is as follows: firstly, a hydraulic power control system drives a movable die 1 to slide rightwards on a slide rail 6 until the movable die is closely attached to a fixed die 2, and then a worker injects liquid aluminum alloy into a cavity 21 through an injection port and fills the whole cavity 21; starting the injection of the liquid aluminum alloy and simultaneously starting the cooling cavity 32, enabling cooling water to flow through the cooling cavity 32 through the first gap 331 and the second gap 341 and continuously taking away heat of the liquid aluminum alloy in the cavity 21, wherein in the process, the temperature of the cooling water is lower than that of the cooling water in a next cavity path when the cooling water flows through the second gap 341 close to the cavity 21, so that the heat absorption effect of the cooling water is ensured, and the cooling of the cooling cavity 32 on the liquid aluminum alloy is accelerated; when the liquid aluminum alloy is cooled to be semi-solid, the hydraulic power control system pulls out the sealing tube in the extrusion channel 24, then the air cylinder 42 is started, the output shaft of the air cylinder 42 drives the extrusion pin 4 to continuously pass through the protective sleeve 241 in the extrusion channel 24, the semi-solid aluminum alloy is locally extruded, the gas at the wall thickness is discharged, the density is increased, and the quality of aluminum alloy parts is improved; after extrusion is completed, the aluminum alloy is continuously accelerated and cooled under the action of the cooling cavity 32 until forming is completed, at the moment, the hydraulic power control system drives the movable die 1 to slide rightwards to leave the fixed die 2, and the movable die 1 is separated to perform demoulding operation of the aluminum alloy part, so that injection molding manufacture of one aluminum alloy part is completed; repeating the steps to make the mould continuously produce and manufacture the aluminum alloy parts.
Example 2
The aluminum alloy die casting die shown in fig. 6 is different from example 1 in that: the connecting mechanism comprises a threaded double plug 221, the threaded double plug 221 is fixedly connected to one end of the core 22, and in the embodiment, the threaded double plug 221 and the core 22 are integrally formed; the concrete way of connecting the core 22 with the fixed mold 2 through the double plugs is as follows: a plurality of stepped threaded holes 23 are formed in the fixed die 2, and the threaded double plugs 221 are just fixed in different stepped threaded holes 23 in a threaded mode. The threaded double plugs 221 not only can improve the stability of connection between the core 22 and the fixed die 2, but also can buffer the stress of the aluminum alloy on the core 22 in the injection molding process, thereby reducing the possibility of breakage of the core 22 due to stress concentration and prolonging the service life of the core 22. When the core 22 needs to be replaced independently, the threaded double plugs 221 are directly screwed out leftwards by rotating the core 22, and the operation is quick and simple. In addition, a spiral channel is formed inside the core 22, a water inlet channel and a water outlet channel are formed in the threaded double plug 221, the water inlet channel and the water outlet channel are both communicated with the spiral channel, the communication position of the water inlet channel and the spiral channel is located at the connection position of the threaded double plug 221 and the core 22, and the communication position of the water outlet channel and the spiral channel is located at the tip end of the core 22. After the cooling water is injected from the water inlet channel, the cooling water flows out from the water outlet channel after passing through the spiral channel, namely, the cooling water flows out unidirectionally in the core 22, so that the cooling effect is further improved.
Example 3
The aluminum alloy die casting die shown in fig. 7 and 8 is different from example 2 in that: also comprises a connecting disc 5, a positioning disc 51 and a plurality of extrusion pins 4. The connecting disc 5 is fixed on the output shaft of the air cylinder 42 through threads, the positioning disc 51 is detachably connected to the connecting disc 5 through screws, and as shown in fig. 7, a plurality of extrusion pins 4 are connected to the positioning disc 51 and the connecting disc 5; the number of extrusion pins 4 is increased, so that the extrusion efficiency of the extrusion unit on the wall thickness of the semi-solid aluminum alloy can be improved, the extrusion uniformity can be improved by enlarging the extrusion surface, the density of the inside of the wall thickness of the aluminum alloy is uniformly increased, and the output quality of the aluminum alloy part is further improved.
The specific connection mode of the extrusion pin 4, the fixed disc and the connecting disc 5 is shown in fig. 8: a plurality of threaded holes are formed in the connecting disc 5, and the right end of the extrusion pin 4 is respectively fixed in different threaded holes through threads; meanwhile, a plurality of horn-shaped connecting holes 511 are formed in the connecting disc 5, the connecting holes 511 are respectively and coaxially communicated with different threaded holes, and a section of the extrusion pin 4 positioned in the connecting holes 511 is also arranged in a horn shape; after the positioning plate 51 is fixed on the connecting disc 5, a rightward pressing force can be generated on the extrusion pin 4 through the connecting hole 511, the stability of fixing the extrusion pin 4 can be improved by the force, the horizontal centering and positioning of the extrusion pin 4 can be further performed by the horn-shaped contact surface of the connecting hole 511, so that the extrusion point of the extrusion pin 4 cannot deviate when the semi-solid aluminum alloy is extruded in the horizontal direction, the extrusion effect is further ensured, meanwhile, the stress of the aluminum alloy on the extrusion pin 4 in the injection molding process can be buffered by the horn-shaped transition section, the possibility of fracture of the extrusion pin 4 is reduced, and the effect of prolonging the service life is achieved.
In addition, a plurality of extrusion channels 24 are additionally arranged on the movable mold 1 in the embodiment, each extrusion channel 24 is coaxial with the corresponding extrusion pin 4, and a protective sleeve 241 is arranged in each extrusion channel 24 to prevent the extrusion pin 4 from directly contacting with the inner wall of the extrusion channel 24, so that the abrasion probability of the extrusion pin 4 is reduced.
When one extrusion pin 4 needs to be replaced, the positioning disc 51 is firstly taken down from the connecting disc 5, then the old extrusion pin 4 is unscrewed leftwards, the new extrusion pin 4 is replaced, and finally the positioning disc 51 is fixed on the connecting disc 5 through screws.
The foregoing is merely exemplary of the present invention, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present invention, and these should also be regarded as the protection scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. The aluminum alloy die casting die comprises a fixed die and a movable die, wherein a cavity is formed between the fixed die and the movable die, and the aluminum alloy die casting die is characterized in that: the fixed die is connected with a cooling cavity, the cooling cavity is communicated with a water inlet hole and a water outlet hole, a plurality of lower partition plates and upper baffle plates are arranged in the cooling cavity at intervals in a crossing manner, a first gap formed by the lower partition plates and the cooling cavity is far away from the die cavity, a second gap formed by the upper baffle plates and the cooling cavity is close to the die cavity, the width of the first gap is larger than that of the second gap, two ends close to the cooling cavity are upper baffle plates, and the water inlet hole and the water outlet hole are respectively located between two ends of the cooling cavity and the adjacent upper baffle plates.
2. An aluminum alloy die casting die as claimed in claim 1, wherein: the cooling cavity is formed in the cooling plate; the cooling cavity is provided with two, and two cooling cavities are arc.
3. An aluminum alloy die casting die as claimed in claim 2, wherein: still include a plurality of cores, and all be equipped with coupling mechanism on every core, coupling mechanism fixes the core respectively on the cover half, and the core after the fixing all is located the die cavity.
4. An aluminum alloy die casting die according to claim 3, characterized in that: the connecting mechanism comprises a threaded double plug, the threaded double plug is fixed on the mold core, and a plurality of stepped threaded holes are formed in the fixed mold.
5. An aluminum alloy die casting die as claimed in claim 2, wherein: the device also comprises an extrusion unit, wherein the extrusion unit comprises an extrusion pin and a cylinder, and the extrusion pin is connected with an output shaft of the cylinder.
6. An aluminum alloy die casting die as recited in claim 5, wherein: one end of the extrusion pin, which is far away from the cylinder, is smaller than one end of the extrusion pin, which is close to the cylinder, and a conical transition section is arranged between the two ends of the extrusion pin.
7. The aluminum alloy die casting die according to claim 6, wherein: still include the connection pad, connection pad and the output shaft of cylinder, and be equipped with a plurality of extrusion round pin on the connection pad.
8. The aluminum alloy die casting die according to claim 7, wherein: the connecting device is characterized by further comprising a positioning plate, wherein the positioning plate is detachably connected with the connecting plate, a plurality of connecting holes are formed in the positioning plate, the extrusion pins respectively pass through the connecting holes in a sealing mode, and the connecting holes are horn-shaped.
9. An aluminum alloy die casting die according to any one of claims 5 to 8, characterized in that: still include the protective sheath, the protective sheath is fixed in the cover half, extrudees the round pin and slides in the protective sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310487570.7A CN116511464B (en) | 2023-04-28 | 2023-04-28 | Aluminum alloy die casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310487570.7A CN116511464B (en) | 2023-04-28 | 2023-04-28 | Aluminum alloy die casting die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116511464A true CN116511464A (en) | 2023-08-01 |
| CN116511464B CN116511464B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310487570.7A Active CN116511464B (en) | 2023-04-28 | 2023-04-28 | Aluminum alloy die casting die |
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| CN111347016A (en) * | 2020-05-08 | 2020-06-30 | 南昌工程学院 | Circulating cooling type continuous casting crystallizer |
| CN112091199A (en) * | 2019-06-17 | 2020-12-18 | 朕诺机械设备江苏有限公司 | Casting mould capable of achieving uniform cooling |
| CN113600783A (en) * | 2021-07-22 | 2021-11-05 | 新程汽车工业有限公司 | High-strength impact-resistant automobile stand column die |
| CN218224593U (en) * | 2022-09-13 | 2023-01-06 | 江西忠言金属科技有限公司 | Water cooling device for aluminum alloy die casting production |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB725168A (en) * | 1952-02-22 | 1955-03-02 | Boehler & Co Ag Geb | Chilling of continuous casting moulds |
| KR20090020080A (en) * | 2007-08-22 | 2009-02-26 | 동남정밀 주식회사 | Die casting method |
| CN201524777U (en) * | 2009-11-06 | 2010-07-14 | 中冶连铸技术工程股份有限公司 | Changeable water tank section slab crystallizer copper plate |
| CN205915631U (en) * | 2016-06-21 | 2017-02-01 | 上海与德通讯技术有限公司 | Injection mold |
| CN207343749U (en) * | 2017-09-21 | 2018-05-11 | 宁波环亚机械制造有限公司 | A kind of core cooling structure of aluminum alloy die-casting die |
| CN209698011U (en) * | 2019-04-10 | 2019-11-29 | 章丘市鑫东铸造机械有限公司 | A kind of type core pressurizing unit |
| CN112091199A (en) * | 2019-06-17 | 2020-12-18 | 朕诺机械设备江苏有限公司 | Casting mould capable of achieving uniform cooling |
| CN111347016A (en) * | 2020-05-08 | 2020-06-30 | 南昌工程学院 | Circulating cooling type continuous casting crystallizer |
| CN113600783A (en) * | 2021-07-22 | 2021-11-05 | 新程汽车工业有限公司 | High-strength impact-resistant automobile stand column die |
| CN218224593U (en) * | 2022-09-13 | 2023-01-06 | 江西忠言金属科技有限公司 | Water cooling device for aluminum alloy die casting production |
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| CN116511464B (en) | 2024-05-28 |
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