CN114951595A - Die casting die - Google Patents
Die casting die Download PDFInfo
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- CN114951595A CN114951595A CN202210760523.0A CN202210760523A CN114951595A CN 114951595 A CN114951595 A CN 114951595A CN 202210760523 A CN202210760523 A CN 202210760523A CN 114951595 A CN114951595 A CN 114951595A
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- casting
- lower die
- cavity
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- 238000004512 die casting Methods 0.000 title claims abstract description 176
- 230000017525 heat dissipation Effects 0.000 claims abstract description 76
- 238000001816 cooling Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 2
- 241001133184 Colletotrichum agaves Species 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 2
- 238000005266 casting Methods 0.000 abstract description 9
- 238000009826 distribution Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000014759 maintenance of location Effects 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B22D17/22—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
- B22D17/20—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a die casting die, comprising: an upper die and a lower die; the bottom of the upper die is provided with an upper die-casting part, and a water-cooling flow channel and at least one heat dissipation cavity are arranged in the upper die; a water cooling pool is arranged in the lower die, a lower die casting part and at least one first radiating fin assembly are arranged on the lower die, and at least one heat conducting piece is arranged on the first radiating fin assembly; after the upper die and the lower die are assembled, the upper die-casting part and the lower die-casting part surround to form a die-casting cavity, and the first radiating fin assembly is correspondingly positioned at the opening of the radiating cavity. Compared with the prior art, the die-casting die disclosed by the invention can carry out all-around, uniform and rapid cooling on a die-casting cavity, improves the heat dissipation efficiency, and avoids the condition that the size of a casting is unstable due to uneven temperature distribution in the die.
Description
Technical Field
The invention relates to the technical field of die casting, in particular to a die casting die.
Background
The die casting die plays an important role in industrial production, molten metal is cast at low speed or high speed and filled into a die casting cavity of the die, the die is provided with a movable cavity surface, and the die is pressed and forged along with the cooling process of the molten metal, so that the defects of shrinkage cavity and shrinkage porosity of a blank can be eliminated, the internal structure of the blank can reach broken crystal grains in a forging state, and the comprehensive mechanical property of the blank is obviously improved.
Current die casting die cools off through natural cooling or set up water cooling pipeline only, and the cool time is longer to refrigerated position is comparatively restricted, leads to die casting die's temperature distribution inequality easily, and the temperature distribution inequality can cause the unstability of foundry goods size, makes the foundry goods warp in process of production, produces defects such as hot pressure, sticking mold, surface depression, interior shrinkage cavity and hot bubble.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a die-casting die.
One embodiment of the present invention provides a die casting mold including: an upper die and a lower die;
the bottom of the upper die is provided with an upper die-casting part, a water-cooling runner and at least one heat dissipation cavity are arranged in the upper die, the water-cooling runner is uniformly arranged in the upper die, at least one side of the upper die-casting part is provided with the heat dissipation cavity, and the bottom of the heat dissipation cavity is provided with an opening communicated to the bottom of the upper die;
a water-cooled pool is arranged in the lower die, a lower die-casting part and at least one first radiating fin assembly are arranged on the lower die, the lower die-casting part is positioned at the top of the lower die, the first radiating fin assembly is arranged on at least one side of the lower die-casting part, at least one heat conducting piece is arranged on the first radiating fin assembly, and the heat conducting piece extends into the lower die and extends to a position between the lower die-casting part and the water-cooled pool;
after the upper die and the lower die are assembled, the upper die-casting part and the lower die-casting part surround to form a die-casting cavity, and the first radiating fin assembly is correspondingly positioned at the opening of the radiating cavity.
Compared with the prior art, the die casting die has the advantages that the heat of the lower die casting part is conducted to the first radiating fin component through the heat conducting piece, the first radiating fin component can also radiate the side face of the lower die casting part, the hot air can rise, so that the heat of the first radiating fin component is conducted into the radiating cavity of the upper die, the heat in the radiating cavity and the heat of the upper die casting part are taken away by liquid in the water-cooling flow channel of the upper die, the water-cooling pool at the bottom of the die casting cavity can also radiate the die casting cavity in a large area, the die casting cavity is cooled uniformly and quickly in an all-round mode, radiating efficiency is improved, and the condition that the size of a casting is unstable due to uneven temperature distribution in the die is avoided.
In some optional embodiments, the lower die is provided with at least one mounting groove on the top thereof, the mounting groove is located on at least one side of the lower die-casting portion, the mounting groove has an open top, the first cooling fin assembly is disposed in the mounting groove, and after the upper die and the lower die are assembled, the open top of the mounting groove is communicated with the opening of the cooling cavity.
In some optional embodiments, the mounting groove has a side opening, the side opening of the mounting groove is located on a side of the mounting groove far away from the lower die-casting portion, the bottom of the upper die is provided with at least one stop block, the stop block is arranged around the opening of the heat dissipation cavity, and after the upper die and the lower die are assembled, the stop block extends into the mounting groove and seals the side opening of the mounting groove.
In some optional embodiments, a sealing gasket surrounding the top opening of the mounting groove is arranged on the lower die, and the sealing gasket abuts against the bottom of the upper die after the upper die and the lower die are closed.
In some optional embodiments, the lower mold comprises a die-casting plate and a base, the die-casting plate is arranged on the base, the top of the die-casting plate is provided with the lower die-casting portion, the bottom of the die-casting plate is provided with a first recess, the top of the base is provided with a second recess, and the first recess and the second recess surround to form the water cooling pool.
In some alternative embodiments, the water cooling pond has a water inlet and a water outlet, and the water inlet is lower than the water outlet.
In some alternative embodiments, the inner wall of the water-cooled pool is provided with at least one second fin assembly located on at least one side of the water-cooled pool.
In some optional embodiments, an oil-cooled conduit is disposed within the die-casting plate, the oil-cooled conduit being disposed between the die-casting cavity and the water-cooled pool.
In some optional embodiments, the lower die-cast part includes a first protrusion provided at a top of the lower die, and a second protrusion arranged around the first protrusion, a height of the first protrusion being higher than a height of the second protrusion;
the oil cooling pipeline is provided with a bending section which is bent towards the lower die-casting part and is positioned inside the first protruding part;
the heat-conducting member extends to the bottom of the second projecting portion.
In some optional embodiments, the upper die is provided with at least one exhaust groove, the exhaust groove is arranged on at least one side of the upper die-casting portion, an exhaust hole and a plurality of flow blocking blocks are arranged in the exhaust groove, the flow blocking blocks are sequentially arranged in the direction from the upper die-casting portion to the exhaust hole, after the upper die and the lower die are closed, the lower die closes the exhaust groove, and the die-casting cavity is sequentially communicated with the outside of the upper die through the exhaust groove and the exhaust hole.
In order that the invention may be more clearly understood, specific embodiments thereof will be described hereinafter with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a die casting mold according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an upper die of one embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the lower mold according to one embodiment of the present invention;
FIG. 4 is a cross-sectional view of a die casting mold of one embodiment of the present invention;
fig. 5 is a schematic structural view of a die casting mold according to an embodiment of the present invention when an upper mold and a lower mold are closed;
FIG. 6 is a cross-sectional view parallel to the horizontal of the upper die of one embodiment of the present invention;
FIG. 7 is a cross-sectional view parallel to the vertical of the upper die of one embodiment of the present invention;
FIG. 8 is a schematic view of the bottom of the die cast plate of one embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a base in accordance with one embodiment of the present invention;
FIG. 10 is a cross-sectional view of a lower die of one embodiment of the present invention taken parallel to the vertical;
FIG. 11 is a cross-sectional view of a die cast plate of one embodiment of the invention parallel to the horizontal plane;
fig. 12 is an enlarged view at a shown in fig. 2.
10. An upper die; 11. an upper die-casting section; 12. water-cooling the runner; 121. a main flow channel; 122. connecting the flow channel; 13. a heat dissipation cavity; 131. an inclined surface; 14. a stopper; 15. a top plate; 16. a base plate; 17. a third fin assembly; 18. pouring a channel; 19. an exhaust groove; 191. an exhaust hole; 192. a flow blocking block; 20. a lower die; 21. a first heat sink fin assembly; 22. a lower die-casting section; 221. a first projecting portion; 222. a second projection; 23. a heat conductive member; 24. mounting grooves; 241. a gasket; 25. die-casting the plate; 251. a first recess; 252. a water outlet; 253. a third recessed portion; 26. a base; 261. a second recessed portion; 262. a water inlet; 27. an oil-cooled pipeline; 271. a pressure increasing valve; 272. a curved section; 28. a thimble mechanism; 281. a lifting plate; 282. a thimble; 30. a water-cooling pool; 31. a second heat sink fin assembly; 40. and (4) die-casting the die cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "rigid," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. In the description of the present invention, "plurality" means 2 or more unless otherwise specified.
Please refer to fig. 1, which is a schematic structural diagram of a die-casting mold according to an embodiment of the present invention, the die-casting mold includes: an upper die 10 and a lower die 20.
Referring to fig. 2 to 4, fig. 2 is a schematic structural diagram of an upper die according to an embodiment of the present invention, fig. 3 is a schematic structural diagram of a lower die according to an embodiment of the present invention, fig. 4 is a cross-sectional view of a die casting mold according to an embodiment of the present invention, an upper die casting portion 11 is disposed at the bottom of the upper die 10, a water cooling runner 12 and at least one heat dissipation cavity 13 are disposed in the upper die 10, the water cooling runner 12 is uniformly disposed in the upper die 10, at least one side of the upper die casting portion 11 is disposed with a heat dissipation cavity 13, and an opening communicated to the bottom of the upper die 10 is disposed at the bottom of the heat dissipation cavity 13; a water-cooling pool 30 is arranged in the lower die 20, a lower die-casting part 22 and at least one first radiating fin assembly 21 are arranged on the lower die 20, the lower die-casting part 22 is positioned at the top of the lower die 20, the first radiating fin assembly 21 is arranged on at least one side of the lower die-casting part 22, at least one heat conducting piece 23 is arranged on the first radiating fin assembly 21, and the heat conducting piece 23 extends into the lower die 20 and extends to a position between the lower die-casting part 22 and the water-cooling pool 30; after the upper die 10 and the lower die 20 are closed, the upper die casting part 11 and the lower die casting part 22 surround to form a die casting cavity 40, and the first heat dissipation fin assembly 21 is correspondingly positioned at the opening of the heat dissipation cavity 13.
The first fin assembly 21 is located at one side of the lower die-casting portion 22, and can dissipate heat at a position of a side surface of the die-casting cavity 40, and the heat-conducting member 23 can bring the heat inside the lower die 20 near the lower die-cast part 22 to the first fin assembly 21, so that the first fin assembly 21 radiates the heat to the bottom of the die-cast cavity 40, since the hot air is raised to conduct the heat of the first fin assembly 21 to the heat dissipation cavity 13 of the upper die 10, the heat in the heat dissipation cavity 13 and the heat in the upper die casting part 11 are taken away by the liquid in the water-cooled runner 12 of the upper die 10, the water-cooling pool 30 at the bottom of the die-casting cavity 40 can also dissipate heat of the die-casting cavity 40 in a large area, therefore, the die-casting cavity 40 is cooled uniformly and quickly in an all-round mode, the radiating efficiency is improved, and the unstable condition of the size of a casting caused by uneven temperature distribution in the die is avoided.
The upper die 10 or the lower die 20 is connected with the translation driving assembly, after the upper die 10 and the lower die 20 are closed, the translation driving assembly drives the upper die 10 or the lower die 20 to lift, and after the upper die 10 or the lower die 20 moves, the movement of the inner surface of the die-casting cavity 40 is realized, so that a casting in the die-casting cavity 40 is die-cast.
In the present embodiment, only one first heat dissipation fin assembly 21 and one heat dissipation cavity 13 are provided, and of course, a greater number of first heat dissipation fin assemblies 21 and heat dissipation cavities 13 may be provided according to actual heat dissipation requirements, for example, the first heat dissipation fin assemblies 21 are provided on the left and right sides or around the upper die-casting portion 11, and the heat dissipation cavities 13 are provided on the left and right sides or around the lower die-casting portion 22, so that the side surfaces of the die-casting cavity 40 are more easily cooled, a situation that a heat dissipation structure is only provided above or below the die-casting cavity 40 is avoided, the uniformity of the mold temperature is improved, and the first heat dissipation fin assemblies 21 are located at the openings of the heat dissipation cavities 13 in a one-to-one correspondence manner.
In some alternative embodiments, the first die-casting portion is recessed toward the upper die 10, the second die-casting portion protrudes from the top of the lower die 20, the heat-conducting member 23 extends into the lower die 20 to the bottom of the second die-casting portion, and after the upper die 10 and the lower die 20 are assembled, the second die-casting portion extends into the first die-casting portion, and the heat-conducting member 23 is located at the bottom of the die-casting cavity 40, so that heat at the bottom of the die-casting cavity 40 can be more easily conducted away. Of course, the structures of the first die-cast part and the second die-cast part are not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present invention.
In order to facilitate the installation of the first heat dissipation fin assembly 21, in some alternative embodiments, the top of the lower die 20 is provided with at least one installation groove 24, the installation groove 24 is located on at least one side of the lower die casting portion 22, the installation groove 24 has a top opening, the first heat dissipation fin assembly 21 is arranged in the installation groove 24, and after the upper die 10 and the lower die 20 are closed, the top opening of the installation groove 24 is communicated with the opening of the heat dissipation cavity 13.
The heat-conducting member 23 may be designed as needed, and in this embodiment, the first heat-dissipating fin member 21 is provided with a plurality of heat-conducting members 23 arranged side by side, and the heat-conducting members 23 are rod-shaped and inserted into the lower mold 20 from the inner wall of the mounting groove 24.
Referring to fig. 5, which is a schematic structural view of a die casting mold according to an embodiment of the present invention when an upper mold and a lower mold are closed, in some alternative embodiments, a mounting groove 24 has a side opening, the side opening of the mounting groove 24 is located on a side of the mounting groove 24 far away from a lower die-casting portion 22, the bottom of the upper mold 10 is provided with at least one stopper 14, and the stopper 14 is arranged around an opening of a heat dissipation cavity 13. After the upper die 10 and the lower die 20 are assembled, the stopper 14 extends into the mounting groove 24 and seals the side opening of the mounting groove 24, so that the stopper 14, the mounting groove 24 and the heat dissipation cavity 13 form a sealed space, and the first heat dissipation fin assembly 21 is located in the sealed space, so that most of heat of the first heat dissipation fin assembly 21 is conveyed to the heat dissipation cavity 13 through air and then is conducted to the water cooling flow channel 12, and the heat dissipation efficiency is improved. In addition, when the upper die 10 and the lower die 20 are opened, the lower die 20 can radiate heat through the first heat dissipation fin assembly 21, and since the stopper 14 is separated from the mounting groove 24, the first heat dissipation fin assembly 21 is prevented from being blocked from radiating heat to the side opening of the mounting groove 24.
In some alternative embodiments, the lower die 20 is provided with a gasket 241 around the top opening of the mounting groove 24, and after the upper die 10 and the lower die 20 are clamped, the gasket 241 abuts against the bottom of the upper die 10, so that hot air of the first heat dissipation fin assembly 21 is prevented from entering the die-casting cavity 40 from a gap between the upper die 10 and the lower die 20, and in addition, the sealing performance of the above-mentioned space sealed by the stopper 14, the mounting groove 24 and the heat dissipation cavity 13 can be improved.
Referring to fig. 6, which is a cross-sectional view of an upper mold according to an embodiment of the present invention, in some alternative embodiments, the water-cooling channel 12 includes a plurality of main channels 121 and a plurality of curved connecting channels 122, the main channels 121 are uniformly laid in the upper mold 10 side by side, and adjacent main channels 121 are communicated with each other through the connecting channels 122, so that the water-cooling channel 12 can take away heat at various positions in the upper mold 10, improve uniformity of temperature of the upper mold 10, and prevent heat accumulation. In the present embodiment, the water cooling channel 12 further includes a water inlet channel and a water outlet channel, the water inlet channel is communicated with the main channel 121 at the head end, and the water outlet channel is communicated with the main channel 121 at the tail end.
In some alternative embodiments, the upper mold 10 includes a top plate 15 and a bottom plate 16 connected to each other, the heat dissipation cavity 13 is disposed in the bottom plate 16, the opening of the heat dissipation cavity 13 is located at the bottom of the bottom plate 16, the upper die casting part 11 is disposed at the bottom of the bottom plate 16, the water cooling channels 12 are uniformly disposed in the top plate 15 and located above the heat dissipation cavity 13 and the upper die casting part 11, and heat from the die casting cavity 40 and heat from the heat dissipation cavity 13 are conducted to the water cooling channels 12 in a direction away from the die casting cavity 40 after passing through the upper die casting part 11, so that the heat is away from the die casting cavity 40, thereby facilitating heat dissipation. Of course, the structure of the upper mold 10 is not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present invention, for example, in other embodiments, the water cooling channels 12 are uniformly arranged in the upper mold 10, and the heat dissipation cavity 13 can be arranged between the water cooling channels 12, such as between two adjacent main channels 121; the upper die-casting part 11 or the die-casting cavity 40 is located between the water-cooled flow passages 12, such as between two adjacent main flow passages 121.
Referring to fig. 7, which is a cross-sectional view of an upper mold parallel to a vertical plane according to an embodiment of the present invention, when the water-cooling flow passage 12 is located above the heat dissipation cavity 13, in some optional embodiments, a top surface and an inclined surface 131 located on at least one side of the top surface are provided at the top of the heat dissipation cavity 13, the inclined surface 131 is connected to the top surface, and the arrangement of the inclined surface 131 can improve the area of the top of the heat dissipation cavity 13, so as to improve the heat dissipation efficiency. In the present embodiment, both sides of the top surface of the heat dissipation cavity 13 are provided with the inclined surfaces 131, and the top of the heat dissipation cavity 13 has a trapezoidal section in parallel to the vertical direction. Of course, the structure of the heat dissipation cavity 13 is not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present invention.
In order to improve the heat dissipation effect of the side of the mold, in some alternative embodiments, at least one side of the upper mold 10 is provided with a third heat dissipation fin assembly 17, and in this embodiment, both opposite sides of the upper mold 10 are provided with the third heat dissipation fin assembly 17. In addition, in some alternative embodiments, the third heat dissipation fin assembly 17 is disposed on one side of the heat dissipation cavity 13, so that heat of the heat dissipation cavity 13 can be conducted from the side to the third heat dissipation fin assembly 17, and the heat dissipation effect of the heat dissipation cavity 13 can be improved.
In some alternative embodiments, the upper die 10 is provided with a pouring channel 18 penetrating through the top and the bottom of the upper die 10, and the pouring channel 18 and the heat dissipation cavity 13 are respectively located at two sides of the first die-casting portion, so as to avoid interference between the heat dissipation cavity 13 and the pouring channel 18, and avoid that the heat of liquid newly entering the pouring channel 18 enters the heat dissipation cavity 13 to affect the heat dissipation effect of the heat dissipation cavity 13. After the upper die 10 and the lower die 20 are closed, the pouring channel 18 is communicated with the die cavity 40.
Referring to fig. 8 to 10, fig. 8 is a schematic structural view of a bottom of a die-cast plate according to an embodiment of the present invention, fig. 9 is a schematic structural view of a base according to an embodiment of the present invention, fig. 10 is a cross-sectional view of a lower die according to an embodiment of the present invention, the lower die 20 includes a die-cast plate 25 and a base 26, the die-cast plate 25 is disposed on the base 26, the top of the die-cast plate is provided with a lower die-cast part 22, the bottom of the die-cast plate is provided with a first concave part 251, the top of the base 26 is provided with a second concave part 261, and the first concave part 251 and the second concave part 261 surround to form a water-cooling pool 30. The first concave portion 251 is concave towards the die-casting plate 25, which is beneficial to enlarging the heat dissipation area, so that the water-cooling pool 30 is closer to the lower die-casting portion 22, and the heat of the die-casting cavity 40 is more easily conducted to the water-cooling pool 30. Of course, the structure of the lower mold 20 is not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present invention.
In some alternative embodiments, the water cooling tank 30 has the water inlet 262 and the water outlet 252, and the height of the water inlet 262 is lower than that of the water outlet 252, so that when the water cooling tank 30 is filled with cooling water, the flow of the cooling water flows from bottom to top first, thereby avoiding the cooling water from flowing through the water cooling tank 30 quickly due to the gravity, increasing the retention time of the cooling water in the water cooling tank 30, and enabling the cooling water to exchange heat sufficiently and then take away heat. In this embodiment, the water inlet 262 is located in the second recess 261, and the water outlet 252 is located in the first recess 251.
In some alternative embodiments, the water-cooling pool 30 and the die cavity 40 are overlapped in the projection direction parallel to the vertical direction, so that the heat conduction of the die cavity 40 to the water-cooling pool 30 is facilitated, and the heat dissipation effect is improved.
In some alternative embodiments, the lower die-casting part 22 protrudes from the die-casting plate 25, the top of the first recess 251 is provided with a third recess 253, and the third recess 253 extends towards the lower die-casting part 22, so as to further increase the distance between the water-cooling pool 30 and the die-casting cavity 40, and in other embodiments, the third recess 253 may also extend into the lower die-casting part 22, so that the heat of the side surface of the lower die-casting part 22 can also be conducted to the side surface of the third recess 253, so that the third recess 253 is adapted to the shape of the lower die-casting part 22, and the heat dissipation effect is improved.
In some alternative embodiments, the inner wall of the water-cooled tank 30 is provided with at least one second cooling fin assembly 31, and the second cooling fin assembly 31 is located on at least one side of the water-cooled tank 30, so that the cooling fin assembly increases the contact area between the lower die 20 and the cooling water in the water-cooled tank 30, and thus increases the heat exchange efficiency of the cooling water. In the present embodiment, the second fin assembly 31 is provided at the bottom of the die-cast plate 25.
In some alternative embodiments, an oil cooling duct 27 is provided in the die casting plate 25, the oil cooling duct 27 being arranged between the die casting cavity 40 and the water cooling pool 30. Heat conducting oil flows through the oil cooling pipeline 27, so that the cooling burden of the water cooling pool 30 is reduced, and the cooling effect on the die-casting cavity 40 is further improved.
Referring to fig. 11, which is a cross-sectional view of a die-casting plate parallel to a horizontal plane according to an embodiment of the present invention, in some alternative embodiments, a plurality of oil-cooling ducts 27 are provided in the die-casting plate 25, and a plurality of oil-cooling ducts 27 are arranged in the die-casting plate 25 side by side, and in this embodiment, three oil-cooling ducts 27 are provided in the die-casting plate 25. Of course, the number of oil cooling ducts 27 is not limited thereto, and other suitable numbers may be selected by those skilled in the art in light of the teachings of the present invention.
In some optional embodiments, the oil cooling pipeline 27 is connected to a pressure increasing valve 271, and the pressure increasing valve 271 increases the pressure of the heat transfer oil, so that the heat transfer oil can circulate more smoothly, and the heat dissipation efficiency can be improved. Of course, the oil cooling pipe 27 may be connected to other types of valves, such as a solenoid valve, etc., without being limited thereto.
In some alternative embodiments, the lower mold part 22 includes a first projection 221 and a second projection 222, the first projection 221 is provided on the top of the lower mold 20, the second projection 222 is arranged around the first projection 221, and the height of the first projection 221 is higher than the height of the second projection 222; the oil cooling duct 27 has a bent section 272, and the bent section 272 is bent toward the lower die cast portion 22 and located inside the first protrusion 221; the heat-conducting member 23 extends to the bottom of the second projection 222. The extending direction of crooked section 272 is roughly parallel with the surface of first bulge 221, make oil-cooled pipeline 27 be close to more and the shape of laminating die casting die cavity 40, improve the radiating effect of conduction oil to die casting die cavity 40, crooked section 272 has also adapted to the shape of the first bulge of die casting portion 22 down, can correspond the cooperation with die casting portion 22 top and side down more comprehensively, make the conduction oil can take away the heat more fully, and heat conduction will dispel the heat to the position of second bulge 222 department, the cooling of cooperation oil cooling, reduce the cooling burden of water-cooling pond 30, and more accurate each position to die casting die cavity 40 cools off, the cooling effect is improved.
The die-casting die disclosed by the invention can accurately cool each position of the die-casting cavity 40, so that the local heat accumulation caused by the special-shaped structure of the die-casting cavity 40 is avoided, and the influence on the production of a casting is further avoided.
Referring to fig. 12, which is an enlarged view of a portion a shown in fig. 2, in some alternative embodiments, at least one vent groove 19 is formed in the upper mold 10, the vent groove 19 is formed in at least one side of the upper die-casting portion 11, a vent hole 191 and a plurality of baffle blocks 192 are formed in the vent groove 19 of the upper mold 10, the baffle blocks 192 are sequentially arranged in a direction from the upper die-casting portion 11 to the vent hole 191, after the upper mold 10 and the lower mold 20 are closed, the lower mold 20 closes the vent groove 19, and the die-casting cavity 40 is sequentially communicated with the outside of the upper mold 10 through the vent groove 19 and the vent hole 191. Because air is still in the die-casting cavity 40 when die-casting is started, if the air in the die-casting cavity 40 is not exhausted, the air enters molten metal, and holes appear in the casting, and the design of the vent holes 191 can extrude the air in the die-casting cavity 40 out of the die-casting cavity 40 through the molten metal from the vent holes 191 when the molten metal enters the die-casting cavity 40; of course, a vacuum-pumping device may be connected to the exhaust hole 191 to evacuate air from the molding cavity 40. In addition, the temperature of the die casting cavity 40 is low, the molten metal entering the die casting cavity 40 at first has poor quality due to severe temperature change, and the poor quality part needs to be abandoned, through the design of the exhaust groove 19 and the baffle block 192, the molten metal entering the die casting cavity 40 at first can enter the exhaust groove 19, and the baffle block 192 can avoid the molten metal from flowing too fast, so that the molten metal is solidified in the exhaust groove 19, the exhaust groove 19 is further sealed, the molten metal is also prevented from flowing out from the exhaust hole 191, because the molten metal is solidified and the exhaust groove 19 is sealed before the air in the die casting cavity 40 is extruded by the molten metal, the exhaust of the die casting cavity 40 is not influenced, and after the production of the casting is finished, the redundant part can be removed, so that the quality of the casting is improved.
In this embodiment, the lower mold 20 is also provided with the exhaust groove 19, the exhaust groove 19 of the lower mold 20 is provided with a plurality of baffle blocks 192, after the upper mold 10 and the lower mold 20 are clamped, the exhaust groove 19 of the upper mold 10 and the exhaust groove 19 of the lower mold 20 surround to form one exhaust cavity, and the die casting cavity 40 is communicated with the outside of the upper mold 10 through the exhaust cavity and the exhaust hole 191 in sequence. The flow blocking pieces 192 of the lower mold 20 and the flow blocking pieces 192 of the upper mold 10 are arranged to be offset from each other.
The first, second and third heat dissipation fin assemblies 21, 31 and 17 can be designed appropriately according to actual needs, for example, the heat dissipation fin assembly includes a plurality of fins, the plurality of fins are arranged in a uniform manner, and heat dissipation gaps are formed between adjacent fins.
In some alternative embodiments, the base 26 is provided with a pin mechanism 28, and the pin mechanism 28 movably penetrates through the base 26, the cold water tank and the die-casting plate 25. The ejector pin mechanism 28 may be appropriately designed according to actual needs, in this embodiment, a movable cavity is disposed in the middle of the base 26, the ejector pin mechanism 28 is disposed in the movable cavity, the ejector pin mechanism 28 includes a lifting plate 281 disposed in the movable cavity and a plurality of ejector pins 282 disposed on the lifting plate 281, the lifting plate 281 moves in the movable cavity in a direction close to or away from the die-casting plate 25, the ejector pins 282 movably penetrate through the base 26, the water-cooling pool 30 and the die-casting plate 25, and when the die-casting is completed, the lifting plate 281 moves toward the die-casting plate 25, so that the ejector pins 282 eject the casting on the lower die-casting portion 22. The position of the thimble 282 may be set according to actual requirements.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A die casting mold, comprising: an upper die and a lower die;
the bottom of the upper die is provided with an upper die-casting part, a water-cooling runner and at least one heat dissipation cavity are arranged in the upper die, the water-cooling runner is uniformly arranged in the upper die, at least one side of the upper die-casting part is provided with the heat dissipation cavity, and the bottom of the heat dissipation cavity is provided with an opening communicated to the bottom of the upper die;
a water-cooling pool is arranged in the lower die, a lower die-casting part and at least one first radiating fin assembly are arranged on the lower die, the lower die-casting part is positioned at the top of the lower die, the first radiating fin assembly is arranged on at least one side of the lower die-casting part, at least one heat conducting piece is arranged on the first radiating fin assembly, and the heat conducting piece extends into the lower die and extends between the lower die-casting part and the water-cooling pool;
after the upper die and the lower die are assembled, the upper die-casting part and the lower die-casting part surround to form a die-casting cavity, and the first radiating fin assembly is correspondingly positioned at the opening of the radiating cavity.
2. A die casting mold as claimed in claim 1, wherein: the top of lower mould is provided with at least one mounting groove, the mounting groove is located at least one side of lower die-casting portion, the mounting groove has open-top, first fin subassembly sets up in the mounting groove, go up the mould with the lower mould compound die back, the open-top of mounting groove with the opening intercommunication of heat dissipation cavity.
3. A die casting mold as claimed in claim 2, wherein: the mounting groove has the side opening, the side opening of mounting groove is located keeping away from of mounting groove one side of die-casting portion down, the bottom of going up the mould is provided with at least one dog, the dog centers on the opening of heat dissipation cavity arranges, go up the mould with the lower mould compound die back, the dog stretches into in the mounting groove to seal the side opening of mounting groove.
4. A die casting mold as claimed in claim 2, wherein: and a sealing gasket surrounding the opening at the top of the mounting groove is arranged on the lower die, and the sealing gasket is abutted against the bottom of the upper die after the upper die and the lower die are assembled.
5. A die casting mold as claimed in any one of claims 1 to 4, wherein: the lower die comprises a die-casting plate and a base, the die-casting plate is arranged on the base, the top of the die-casting plate is provided with the lower die-casting portion, the bottom of the die-casting plate is provided with a first concave portion, the top of the base is provided with a second concave portion, and the first concave portion and the second concave portion are formed in a surrounding mode to form the water-cooling pool.
6. A die casting mold as claimed in any one of claims 1 to 4, wherein: the water cooling pond is provided with a water inlet and a water outlet, and the height of the water inlet is lower than that of the water outlet.
7. A die casting mold as claimed in any one of claims 1 to 4, wherein: the inner wall of the water-cooling pool is provided with at least one second radiating fin assembly, and the second radiating fin assembly is positioned on at least one side of the water-cooling pool.
8. A die casting mold as claimed in any one of claims 1 to 4, wherein: an oil cooling pipeline is arranged in the lower die and is arranged between the die-casting cavity and the water cooling pool.
9. A die casting mold as claimed in claim 8, wherein: the lower die-casting part comprises a first protruding part and a second protruding part, the first protruding part is arranged at the top of the lower die, the second protruding part is arranged around the first protruding part, and the height of the first protruding part is higher than that of the second protruding part;
the oil cooling pipeline is provided with a bending section which is bent towards the lower die-casting part and is positioned inside the first protruding part;
the heat-conducting member extends to the bottom of the second projecting portion.
10. A die casting mold as claimed in any one of claims 1 to 4, wherein: the upper die is provided with at least one exhaust groove, the exhaust groove is arranged on at least one side of the upper die-casting portion, an exhaust hole and a plurality of flow blocking blocks are arranged in the exhaust groove, the flow blocking blocks are arranged in sequence from the upper die-casting portion to the direction of the exhaust hole, after the upper die and the lower die are closed, the lower die is closed, and the die-casting cavity sequentially passes through the exhaust groove and the exhaust hole and is communicated with the outside of the upper die.
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| CN202210760523.0A CN114951595B (en) | 2022-06-30 | 2022-06-30 | Die casting die |
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Cited By (1)
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| CN115625313A (en) * | 2022-10-02 | 2023-01-20 | 昆山鑫昌泰模具科技有限公司 | Casting mould with dual heat dissipation mechanism |
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| CN114951595B (en) | 2023-12-05 |
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