CN115055662A - Extrusion vibration die-casting device - Google Patents
Extrusion vibration die-casting device Download PDFInfo
- Publication number
- CN115055662A CN115055662A CN202210788929.XA CN202210788929A CN115055662A CN 115055662 A CN115055662 A CN 115055662A CN 202210788929 A CN202210788929 A CN 202210788929A CN 115055662 A CN115055662 A CN 115055662A
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- Prior art keywords
- die
- die body
- casting
- extrusion
- vibration
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- 238000004512 die casting Methods 0.000 title claims abstract description 69
- 238000001125 extrusion Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005266 casting Methods 0.000 abstract description 21
- 230000007547 defect Effects 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000013519 translation Methods 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
-
- 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
Abstract
The invention provides an extrusion vibration die casting device, comprising: the device comprises a frame, a die, a driving mechanism, an extrusion mechanism and a vibration exciter; the die comprises a first die body and a second die body which are arranged on the rack, and after the first die body and the second die body are closed, the first die body and the second die body surround to form a die-casting cavity; the driving mechanism is in transmission connection with the first die body; the extrusion mechanism is in transmission connection with the first die body; the vibration exciter is arranged on the machine frame. The extrusion vibration die-casting device provided by the invention has the advantages that the vibration and the pressure are applied to the molten metal in the solidification process, the internal quality of the casting is improved, the crystal grains are refined, the casting defects of shrinkage cavity, shrinkage porosity and the like of the casting are effectively eliminated, the mechanical property and the quality of the casting are greatly improved, the yield strength of the casting under the conditions of vibration and pressure can be greatly improved, the yield of the casting is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of die casting, in particular to an extrusion vibration die-casting device.
Background
In the die-casting production, after the liquid metal of the die box closing is poured, in the static cooling solidification process, because the wall thickness difference of the integral structure of a casting is large, air holes, shrinkage cavities, shrinkage porosity, local cracks, coarse grains and the like generated in the casting process are always fatal defects of die-casting products. The conventional method usually eliminates these defects by changing the pouring parameters and modifying the mold, etc., but with the rapid progress of industrial technology, the demand for high quality cast products is increasing, and the conventional method has poor effect of eliminating the above defects, resulting in difficulty in improving the quality of cast products.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an extrusion vibration die-casting device.
An embodiment of the present invention provides an extrusion vibration die-casting apparatus including: the device comprises a rack, a die, a driving mechanism, an extrusion mechanism and a vibration exciter, wherein the die, the extrusion mechanism and the vibration exciter are arranged on the rack;
the die comprises a first die body and a second die body which are arranged on the rack, and after the first die body and the second die body are assembled, the first die body and the second die body surround to form a die casting cavity;
the driving mechanism is in transmission connection with the first die body and drives the first die body to be close to or far away from the second die body;
the extrusion mechanism is in transmission connection with the first die body and presses the first die body to the second die body;
the vibration exciter is arranged on the rack and is in transmission connection with the first die body.
Compared with the prior art, the extrusion vibration die-casting device provided by the invention has the advantages that the vibration and the pressure are applied to the molten metal in the solidification process, the internal quality of the casting is improved, the crystal grains are refined, the casting defects of shrinkage cavity, shrinkage porosity and the like of the casting are effectively eliminated, the mechanical property and the quality of the casting are greatly improved, the yield strength of the casting under the conditions of vibration and pressure is greatly improved, the yield of the casting is improved, and the production cost is reduced.
In some alternative embodiments, an output rod is arranged on the vibration exciter, and an impact head is arranged at the end of the output rod;
one side of the first die body, which is far away from the second die body, is provided with a mounting groove, and the impact head extends into the mounting groove.
In some alternative embodiments, a buffer pad is disposed on an inner wall of the mounting groove, the buffer pad is located on a side of the mounting groove close to the second die body, and an end of the impact head is connected to the buffer pad.
In some optional embodiments, a side of the first die body close to the second die body is provided with a convex die-casting part, and after the die-casting part and the second die body are assembled, the first die body and the second die body surround to form a die-casting cavity which is arranged around the die-casting part;
the installation slot part is located the inside of die-casting portion, the impact head passes through the installation slot stretches into the inside of die-casting portion.
In some optional embodiments, the driving mechanism includes a motor and a plurality of screws, the plurality of screws are disposed on the frame, are arranged around the first mold body, and are in threaded connection with the first mold body, the motor is in transmission connection with the screws, and the vibration exciter is located between the plurality of screws.
In some optional embodiments, the extrusion mechanism includes a pressing plate and at least one telescopic assembly, the pressing plate is connected to a side of the first mold body away from the second mold body, and a telescopic end of the telescopic assembly abuts against the pressing plate to drive the pressing plate to press the first mold body towards the second mold body.
In some optional embodiments, a plurality of pressing columns are arranged on the pressing plate, the pressing columns are arranged around the pressing plate, a plurality of guide grooves are arranged on the first mold body, and the pressing columns movably extend into the guide grooves in a one-to-one correspondence manner and abut against the inner walls of the guide grooves.
In some alternative embodiments, the telescopic assembly is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder.
In some optional embodiments, a water cooling pipeline is arranged in the second die body.
In some optional embodiments, a pouring channel is arranged on the second die body, and the pouring channel is communicated with the die-casting die cavity.
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 an extrusion vibration die-casting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an extrusion vibration die-casting apparatus according to an embodiment of the present invention, in which a part of a frame is hidden;
fig. 3 is a sectional view of a partial structure of an extrusion vibration die-casting apparatus according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of an extrusion die casting apparatus according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a water cooled panel of one embodiment of the present invention.
Description of reference numerals:
10. a frame; 20. a mold; 21. a first mold body; 211. mounting grooves; 212. a cushion pad; 213. a die-casting section; 214. a guide groove; 22. a second mold body; 221. a water-cooled pipeline; 2211. a main pipeline; 2212. connecting a pipeline; 222. a water-cooling plate; 223. an assembly frame; 2231. a groove; 2232. an elastic pad; 224. pouring a channel; 30. a drive mechanism; 31. a motor; 32. a lead screw; 40. an extrusion mechanism; 41. pressing a plate; 42. a telescoping assembly; 43. pressing the column; 44. a support pillar; 50. a vibration exciter; 51. an output rod; 52. an impact head; 60. 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, "plurality" means 2 or more unless otherwise specified.
Referring to fig. 1, a schematic structural diagram of an extrusion vibration die-casting apparatus according to an embodiment of the present invention is shown, the extrusion vibration die-casting apparatus including: the device comprises a frame 10, a die 20, a driving mechanism 30, an extrusion mechanism 40 and an exciter 50, wherein the die 20, the extrusion mechanism 40 and the exciter 50 are arranged on the frame 10.
Referring to fig. 2 and 3, fig. 2 is a schematic structural view of an extrusion vibration die-casting apparatus according to an embodiment of the present invention when a partial structure of a frame is hidden, fig. 3 is a sectional view of a partial structure of an extrusion vibration die-casting apparatus according to an embodiment of the present invention, a mold 20 includes a first mold body 21 and a second mold body 22 disposed on a frame 10, and after the first mold body 21 and the second mold body 22 are closed, the first mold body 21 and the second mold body 22 surround to form a die-casting cavity 60; the driving mechanism 30 is in transmission connection with the first mold body 21 and drives the first mold body 21 to approach or depart from the second mold body 22; the extrusion mechanism 40 is in transmission connection with the first die body 21 and presses the first die body 21 towards the second die body 22; the vibration exciter 50 is arranged on the frame 10 and is in transmission connection with the first die body 21. During casting, the driving mechanism 30 drives the first die body 21 to move towards the second die body 22, so that the first die body 21 and the second die body 22 are assembled, molten metal is injected into the die-casting cavity 60, in the casting solidification process, the extruding mechanism 40 pushes the first die body 21 to press the second die body 22, meanwhile, the vibration exciter 50 applies vibration to the first die body 21, the vibration is compounded to the extrusion force, the static extrusion force of the casting is changed into dynamic extrusion force, feeding power is increased, the maximum positive stress and the maximum shear stress received by the secondary dendritic crystal arms are greatly increased, the secondary dendritic crystals are more easily broken, crystal grains are refined, a feeding channel is enlarged, and the shrinkage porosity and looseness defects of the casting can be well reduced.
In some alternative embodiments, the exciter 50 is provided with an output rod 51, and an end of the output rod 51 is provided with an impact head 52; the side of the first die body 21, which is far away from the second die body 22, is provided with a mounting groove 211, the impact head 52 extends into the mounting groove 211, the vibration exciter 50 drives the impact head 52 to vibrate through the output rod 51, and the impact head 52 impacts the mounting groove 211, so that vibration is applied to the first die body 21, and further vibration is applied to a casting in the die-casting cavity 60. Of course, the connection structure of the exciter 50 and the first mold 21 is not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present invention. The principle of construction of the exciter 50 is well known to those skilled in the art and therefore will not be described in detail here. Preferably, the impact head 52 may be made of a silicon carbide material, and the silicon carbide has material properties of high temperature resistance and good heat conductivity, and also has mechanical properties of wear resistance and high strength.
In some alternative embodiments, the inner wall of the mounting groove 211 is provided with a cushion 212, the cushion 212 is located on one side of the mounting groove 211 close to the second die body 22, and the end of the impact head 52 is connected with the cushion 212, so as to prevent the impact head 52 from impacting the mounting groove 211 to wear and damage the structure of the first die body 21.
In some alternative embodiments, a side of the first die body 21 close to the second die body 22 is provided with a convex die-casting portion 213, and after the die-casting portion 213 and the second die body 22 are closed, the first die body 21 and the second die body 22 surround to form a die-casting cavity 60, and the die-casting cavity 60 is arranged around the die-casting portion 213; the installation groove 211 is partially located inside the die-casting portion 213, and the impact head 52 extends into the die-casting portion 213 through the installation groove 211, so that the impact head 52 is closer to the die-casting cavity 60, and the impact head 52 is located in the middle of the die-casting cavity 60, and vibration energy on the impact head 52 can be better transmitted into the die-casting cavity 60.
In some alternative embodiments, the driving mechanism 30 includes a motor 31 and a plurality of lead screws 32, the plurality of lead screws 32 are disposed on the frame 10, are arranged around the first mold body 21, and are in threaded connection with the first mold body 21, the motor 31 is in transmission connection with the lead screws 32, and the vibration exciter 50 is located between the plurality of lead screws 32. Of course, the structure of the driving mechanism 30 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, the driving mechanism 30 can adopt a lead screw 32 driving assembly, a rotary motor 31 translation driving assembly, a belt translation driving assembly, a cylinder translation driving assembly or a linear motor 31 translation driving assembly, etc.
In some alternative embodiments, the pressing mechanism 40 includes a pressing plate 41 and at least one telescoping assembly 42, the pressing plate 41 is connected to a side of the first mold body 21 remote from the second mold body 22, a telescoping end of the telescoping assembly 42 abuts the pressing plate 41, and the pressing plate 41 is actuated to press the first mold body 21 toward the second mold body 22. Of course, the structure of the pressing mechanism 40 is not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present invention. The telescopic assembly 42 may be designed as required, for example, the telescopic assembly 42 is an air cylinder, an electric cylinder, or a hydraulic cylinder, and the telescopic end of the telescopic assembly abuts against a side of the pressing plate 41 away from the first mold body 21. The platen 41 is also provided with a thickening layer so that the thickness of the platen 41 at the position where the telescopic assembly 42 abuts is increased.
Referring to fig. 4, which is a cross-sectional view of an extrusion vibration die-casting apparatus according to an embodiment of the present invention, in some alternative embodiments, a plurality of pressing pillars 43 are disposed on a pressing plate 41, the plurality of pressing pillars 43 are disposed around the pressing plate 41, a plurality of guiding grooves 214 are disposed on the first mold body 21, and the pressing pillars 43 are movably inserted into the guiding grooves 214 one by one and abut against inner walls of the guiding grooves 214. In the present embodiment, the platen 41 is further provided with a plurality of support columns 44, and the support columns 44 abut on the side of the first block 21 close to the platen 41, thereby improving the structural balance between the platen 41 and the first block 21.
Referring to fig. 5, which is a cross-sectional view of a water-cooled plate according to an embodiment of the present invention, a large amount of heat is generated during die-casting, so that the heat generated during die-casting needs to be conducted away. The water-cooling pipeline 221 includes a plurality of trunk lines 2211 and a plurality of crooked connecting pipes 2212, and a plurality of trunk lines 2211 are laid in last mould side by side evenly, communicate through connecting pipes 2212 between the adjacent trunk line 2211 to make the water-cooling pipeline 221 can take away the heat of a plurality of different positions in the second die body 22, improve the even of the temperature of second die body 22, avoid the heat to pile up. In this embodiment, a water-cooling plate 222 is disposed on a side of the second mold body 22 away from the first mold body 21, the water-cooling pipeline 221 is disposed in the water-cooling plate 222, and a heat-conducting plate is disposed between the second mold body 22 and the water-cooling plate 222 and made of a heat-conducting material such as silicon carbide, so that heat of the die-casting cavity 60 is more easily conducted to the water-cooling plate 222.
It should be noted that, because the first die body 21 and the second die body 22 are tightly attached after the die assembly, the vibration applied to the first die body 21 by the vibration exciter 50 is also transmitted to the second die body 22 in a large amount, so that the cooling water in the water cooling pipeline 221 in the second die body 22 changes flow state due to vibration energy, the cooling water is changed from laminar flow to turbulent flow, the cooling water consumes internal energy, and further the cooling water continuously absorbs heat to maintain the process of flow state change, thereby improving the heat dissipation efficiency of the cooling water to the die-casting cavity 60.
In this embodiment, the bottom of the second die body 22 is further provided with a mounting bracket 223, the mounting bracket 223 is used for mounting with other structures of the die casting device, the top of the mounting bracket 223 is provided with a groove 2231, through grooves are formed on two sides of the groove 2231, the water cooling plate 222 is arranged in the groove 2231, the side edge of the water cooling plate extends into the through grooves, an elastic pad 2232 is arranged between the water cooling plate 222 and the inner wall of the through grooves, and the elastic pad 2232 prevents vibration from the vibration exciter 50 from being conducted to the mounting bracket 223 after passing through the first die body 21, the second die body 22 and the water cooling plate 222.
In some alternative embodiments, the second mold body 22 is provided with a casting channel 224, and the casting channel 224 is in communication with the die casting cavity 60. In the present embodiment, the pouring passage 224 is provided between the adjacent main pipes 2211, and the water-cooling pipe 221 can cool the melt cup connected to the pouring passage 224.
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. An extrusion vibration die casting apparatus, comprising: the device comprises a rack, a die, a driving mechanism, an extrusion mechanism and a vibration exciter, wherein the die, the extrusion mechanism and the vibration exciter are arranged on the rack;
the die comprises a first die body and a second die body which are arranged on the rack, and after the first die body and the second die body are closed, the first die body and the second die body surround to form a die-casting cavity;
the driving mechanism is in transmission connection with the first die body and drives the first die body to be close to or far away from the second die body;
the extrusion mechanism is in transmission connection with the first die body and presses the first die body to the second die body;
the vibration exciter is arranged on the rack and is in transmission connection with the first die body.
2. An extrusion vibration die-casting apparatus as defined in claim 1, wherein: an output rod is arranged on the vibration exciter, and an impact head is arranged at the end part of the output rod;
one side of the first die body, which is far away from the second die body, is provided with a mounting groove, and the impact head extends into the mounting groove.
3. An extrusion vibration die-casting apparatus as defined in claim 2, wherein: the inner wall of the mounting groove is provided with a cushion pad, the cushion pad is positioned on one side of the mounting groove close to the second die body, and the end part of the impact head is connected with the cushion pad.
4. An extrusion vibration die-casting apparatus as defined in claim 2, wherein: a convex die-casting part is arranged on one side of the first die body close to the second die body, after the die-casting part and the second die body are assembled, the first die body and the second die body surround to form a die-casting cavity, and the die-casting cavity surrounds the die-casting part;
the mounting groove portion is located the inside of die-casting portion, the impact head passes through the mounting groove stretches into the inside of die-casting portion.
5. An extrusion die-casting apparatus as defined in any one of claims 1 to 4, wherein: the driving mechanism comprises a motor and a plurality of lead screws, the plurality of lead screws are arranged on the rack, surround the first die body and are in threaded connection with the first die body, the motor is in transmission connection with the lead screws, and the vibration exciters are located among the plurality of lead screws.
6. An extrusion die-casting apparatus as defined in any one of claims 1 to 4, wherein: the extrusion mechanism comprises a pressing plate and at least one telescopic assembly, the pressing plate is connected with one side, away from the second die body, of the first die body, the telescopic end of the telescopic assembly abuts against the pressing plate, and the pressing plate is driven to press the first die body to the second die body.
7. The die casting apparatus according to claim 6, wherein: the pressing plate is provided with a plurality of pressing columns, the pressing columns surround the pressing plate, a plurality of guide grooves are formed in the first die body, and the pressing columns movably extend into the guide grooves in a one-to-one correspondence mode and abut against the inner walls of the guide grooves.
8. The die casting apparatus according to claim 6, wherein: the telescopic assembly is a cylinder, an electric cylinder or a hydraulic cylinder.
9. An extrusion die-casting apparatus as defined in any one of claims 1 to 4, wherein: and a water cooling pipeline is arranged in the second die body.
10. An extrusion vibration die-casting apparatus as defined in any one of claims 1 to 4, wherein: and a pouring channel is arranged on the second die body and communicated with the die-casting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210788929.XA CN115055662B (en) | 2022-07-06 | Extrusion vibration die casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210788929.XA CN115055662B (en) | 2022-07-06 | Extrusion vibration die casting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115055662A true CN115055662A (en) | 2022-09-16 |
| CN115055662B CN115055662B (en) | 2024-05-14 |
Family
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