CN220259512U - Lost foam vacuum casting box with uniform pressure - Google Patents
Lost foam vacuum casting box with uniform pressure Download PDFInfo
- Publication number
- CN220259512U CN220259512U CN202321948138.5U CN202321948138U CN220259512U CN 220259512 U CN220259512 U CN 220259512U CN 202321948138 U CN202321948138 U CN 202321948138U CN 220259512 U CN220259512 U CN 220259512U
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- Prior art keywords
- box body
- sand box
- casting
- casting sand
- shell
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- 238000005266 casting Methods 0.000 title claims abstract description 91
- 239000006260 foam Substances 0.000 title claims abstract description 17
- 244000035744 Hura crepitans Species 0.000 claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 18
- 230000000740 bleeding effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003110 molding sand Substances 0.000 abstract description 15
- 238000000605 extraction Methods 0.000 description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010115 full-mold casting Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000010114 lost-foam casting Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model relates to the field of lost foam vacuum casting, in particular to a lost foam vacuum casting box with uniform pressure, which comprises: the casting sand box comprises a casting sand box body, wherein a cavity is formed in the inner wall of the casting sand box body; the vacuum negative pressure mechanism is used for uniformly carrying out negative pressure on the inside of the casting sand box body and is arranged in the inner cavity of the casting sand box body; through setting up negative pressure assembly, when the inside to casting sand box body is taken out the vacuum, the vacuum pump is through the intercommunication of exhaust tube and second shell of taking out the shell inner chamber of taking out first shell of taking out and second, through the intercommunication of shell and casting sand box body of taking out of first shell and second, the vacuum pump can take out all around of the inside molding sand of casting sand box body to can avoid molding sand upper half vacuum state relatively poor, lead to the condition that the molding sand upper half appears collapsing easily.
Description
Technical Field
The utility model relates to the field of lost foam vacuum casting, in particular to a lost foam vacuum casting box body with uniform pressure.
Background
The lost foam casting (also called full mold casting) is a novel casting method for forming the casting after bonding and combining paraffin or foam models with the size and shape similar to the casting into a model cluster, brushing refractory coating, drying, burying in dry quartz sand for vibration molding, pouring under negative pressure, gasifying the model, enabling liquid metal to occupy the model position, solidifying and cooling, and forming the casting.
Therefore, a lost foam vacuum casting box with uniform pressure is proposed to solve the above problems.
Disclosure of Invention
The utility model aims to solve the problems, and provides a lost foam vacuum casting box with uniform pressure, which solves the problems that the lower the distance from the bottom of a bottom-pumping casting box to the bottom of the box is, the more difficult the gas is pumped, the lower the vacuum state of the upper part of the box is easily caused, and the upper part of the box is easy to collapse.
The utility model realizes the aim through the following technical scheme, and the lost foam vacuum casting box body with uniform pressure comprises: the casting sand box comprises a casting sand box body, wherein a cavity is formed in the inner wall of the casting sand box body; the vacuum negative pressure mechanism is used for uniformly carrying out negative pressure on the inside of the casting sand box body and is arranged in the inner cavity of the casting sand box body; the vacuum negative pressure mechanism comprises a negative pressure assembly and a transmission assembly, wherein the negative pressure assembly is used for carrying out uniform negative pressure on the inside of the casting sand box body and is installed in the cavity in a penetrating mode, and the transmission assembly is used for driving sand in the casting sand box body to flow and is installed around the inner cavity of the casting sand box body.
Preferably, the negative pressure assembly comprises a plurality of first air extraction shells which are installed on the front side and the rear side of the inner cavity of the casting sand box body in a penetrating mode, second air extraction shells are installed on two sides of the bottom of the inner cavity of the casting sand box body in a penetrating mode, one sides of the first air extraction shells and one sides of the second air extraction shells are located in the cavity, air-permeable sand blocking plates are arranged on the tops of one sides of the first air extraction shells and the top of the second air extraction shells, the second air extraction shells are located in one side of the inner cavity in a communicating mode, the first air extraction shells are located in one side of the inner cavity in a communicating mode, two sides of the four-way are communicated with one end, away from the first air extraction shells, of the first connecting pipes, and the other side of the four-way pipe is communicated with the second connecting pipes.
Preferably, the bottoms of the two sides of the casting sand box body are provided with vacuum pumps, the air inlet ends of the vacuum pumps are communicated with air exhaust pipes, and one ends of the air exhaust pipes, which are far away from the vacuum pumps, penetrate through the casting sand box body and are communicated with one ends of the second connecting pipes.
Preferably, the first fixed plates are fixedly installed around the inner cavity of the casting sand box body, wherein vertical rods are installed on the surfaces of the three first fixed plates in a penetrating mode through bearings, first spiral stirring blades are installed on the surfaces of the vertical rods, second fixed plates are fixedly installed on the two sides of the inner cavity of the casting sand box body, second spiral stirring blades are installed on the surfaces of the second fixed plates in a penetrating mode through bearings, first belt pulleys are fixedly installed on the top ends of the second spiral stirring blades, and second belt pulleys are fixedly installed on the top ends of the vertical rods.
Preferably, a motor is installed on one side of the inner cavity of the casting sand box body, the output end of the motor penetrates through a first fixing plate and extends to the top of the first fixing plate, a third belt pulley is fixedly installed at the output end of the motor, a transmission belt is wound on the surface of the third belt pulley, and the third belt pulley, the second belt pulley and the first belt pulley are in transmission connection through the transmission belt.
Preferably, the surfaces of the first fixing plate, the second fixing plate and the motor are provided with a protection shell, and one side of the protection shell is fixedly connected with the inner wall of the casting sand box body.
The beneficial effects of the utility model are as follows:
1. through setting up the negative pressure assembly, when vacuumizing the inside of casting sand box body, the vacuum pump is through the intercommunication of exhaust tube and second shell of bleeding with the gas extraction of first shell of bleeding and second shell inner chamber of bleeding, through the intercommunication of first shell of bleeding and second shell of bleeding and casting sand box body, the vacuum pump can bleed around the inside molding sand of casting sand box body to can avoid the molding sand upper half vacuum state relatively poor, lead to the molding sand upper half to appear the condition of collapsing easily;
2. through setting up drive assembly, when negative pressure assembly vacuumizes to molding sand inside, motor work drives the third belt pulley and rotates, and the third belt pulley passes through drive belt's transmission and connects and drive first belt pulley and second belt pulley synchronous operation, makes first spiral stirring leaf and second spiral stirring leaf rotate and stir the inside molding sand of casting sand box body to can drive the molding sand motion of casting sand box body inner chamber bottom, and cooperate with negative pressure assembly, make the inside gaseous effect that can take out completely of molding sand.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a casting flask body according to the present utility model;
FIG. 3 is a schematic view of a partial structure of the negative pressure assembly of the present utility model;
fig. 4 is a schematic structural view of a transmission assembly according to the present utility model.
In the figure: 1. casting a sand box body; 2. a cavity; 3. a vacuum negative pressure mechanism; 31. a negative pressure assembly; 311. a first pumping shell; 312. a second air extraction shell; 313. breathable sand-blocking plate; 314. a four-way pipe; 315. a first connecting pipe; 316. a second connecting pipe; 317. a vacuum pump; 318. an exhaust pipe; 32. a transmission assembly; 321. a first fixing plate; 322. a vertical rod; 323. a first helical stirring blade; 324. a second fixing plate; 325. a second helical stirring blade; 326. a first pulley; 327. a second belt pulley; 328. a motor; 329. a third belt pulley; 3201. a drive belt; 3202. and protecting the shell.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The specific implementation method comprises the following steps: as shown in fig. 1-4, a lost foam vacuum casting box with uniform pressure, comprising: the casting sand box body 1, wherein a cavity 2 is formed in the inner wall of the casting sand box body 1; the vacuum negative pressure mechanism 3 is used for uniformly carrying out negative pressure on the inside of the casting sand box body 1, and the vacuum negative pressure mechanism 3 is arranged in the inner cavity of the casting sand box body 1; wherein, vacuum negative pressure mechanism 3 includes negative pressure subassembly 31 and drive assembly 32 for carry out the negative pressure subassembly 31 of even negative pressure to the inside of casting sand box body 1 and run through and install in the inside of cavity 2, and be used for driving the inside sand of casting sand box body 1 and carry out the drive assembly 32 that flows around casting sand box body 1 inner chamber.
As shown in fig. 1-4, the negative pressure assembly 31 comprises a plurality of first air extraction shells 311 penetrating through and installed at the front side and the rear side of the inner cavity of the casting sand box body 1, second air extraction shells 312 penetrating through and installed at the two sides of the bottom of the inner cavity of the casting sand box body 1, one sides of the first air extraction shells 311 and the second air extraction shells 312 are located in the cavity 2, air-permeable sand blocking plates 313 are arranged at the tops of one sides of the first air extraction shells 311 and the second air extraction shells 312, a four-way pipe 314 is communicated with one side of the second air extraction shells 312 located in the inner cavity 2, a first connecting pipe 315 is communicated with one side of the first air extraction shells 311, which is far away from the first connecting pipe 315, and a second connecting pipe 316 is communicated with the other side of the four-way pipe 314; the bottom of casting sand box body 1 both sides all is provided with vacuum pump 317, vacuum pump 317's inlet end intercommunication has exhaust tube 318, the one end that vacuum pump 317 was kept away from to exhaust tube 318 runs through casting sand box body 1 and communicates with the one end of second connecting tube 316, vacuum pump 317 passes through the intercommunication of exhaust tube 318 and second connecting tube 316 with suction transmission to the inside of first connecting tube 315 to through the intercommunication of first connecting tube 315 and four-way pipe 314 to the inside gas of first shell 311 and second shell 312 of bleeding continuously the extraction, the intercommunication of rethread first shell 311 and second shell 312 and casting sand box body 1 will suction transmission to the molding sand inside.
As shown in fig. 1-4, the periphery of the inner cavity of the casting sand box body 1 is fixedly provided with first fixing plates 321, wherein the surfaces of the three first fixing plates 321 are respectively provided with a vertical rod 322 in a penetrating manner through bearings, the surfaces of the vertical rods 322 are respectively provided with a first spiral stirring blade 323, the two sides of the inner cavity of the casting sand box body 1 are respectively fixedly provided with a second fixing plate 324, the surfaces of the second fixing plates 324 are respectively provided with a second spiral stirring blade 325 in a penetrating manner through bearings, the top ends of the second spiral stirring blades 325 are respectively fixedly provided with a first belt pulley 326, and the top ends of the vertical rods 322 are respectively fixedly provided with a second belt pulley 327; a motor 328 is arranged at one side of the inner cavity of the casting sand box body 1, the output end of the motor 328 penetrates through a first fixed plate 321 and extends to the top of the first fixed plate 321, a third belt pulley 329 is fixedly arranged at the output end of the motor 328, a transmission belt 3201 is wound on the surface of the third belt pulley 329, the second belt pulley 327 and the first belt pulley 326 are in transmission connection through the transmission belt 3201, the motor 328 works to drive the third belt pulley 329 to rotate, and the third belt pulley 329 synchronously drives the second belt pulley 327 and the first belt pulley 326 to rotate through the transmission connection of the transmission belt 3201, so that the second spiral stirring blade 325 and the first spiral stirring blade 323 are driven to move molding sand in the casting sand box body 1; the surfaces of the first fixing plate 321, the second fixing plate 324 and the motor 328 are provided with a protecting shell 3202, and one side of the protecting shell 3202 is fixedly connected with the inner wall of the casting sand box body 1.
When the utility model is used, the vacuum pump 317 transmits suction force to the inside of the first connecting pipe 315 through the communication between the suction pipe 318 and the second connecting pipe 316, continuously pumps gas in the first suction shell 311 and the second suction shell 312 through the communication between the first connecting pipe 315 and the four-way pipe 314, and transmits suction force to the inside of the molding sand through the communication between the first suction shell 311 and the second suction shell 312 and the casting sand box body 1, and the motor 328 operates to drive the third belt pulley 329 to rotate while the vacuum pump 317 pumps, and the third belt pulley 329 synchronously drives the second belt pulley 327 and the first belt pulley 326 to rotate through the transmission connection of the transmission belt 3201, so as to drive the second spiral stirring blade 325 and the first spiral stirring blade 323 to move the molding sand in the casting sand box body 1, thereby facilitating the vacuum pump 317 to completely pump air in the molding sand box body 1 during movement.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a pressure even lost foam vacuum casting box which characterized in that includes:
the casting sand box comprises a casting sand box body (1), wherein a cavity (2) is formed in the inner wall of the casting sand box body (1);
the vacuum negative pressure mechanism (3) is used for uniformly carrying out negative pressure on the inside of the casting sand box body (1), and the vacuum negative pressure mechanism (3) is arranged in the inner cavity of the casting sand box body (1); wherein,
the vacuum negative pressure mechanism (3) comprises a negative pressure assembly (31) and a transmission assembly (32), wherein the negative pressure assembly (31) for carrying out uniform negative pressure on the inside of the casting sand box body (1) is installed in the cavity (2) in a penetrating manner, and the transmission assembly (32) for driving sand in the casting sand box body (1) to flow is installed around the inner cavity of the casting sand box body (1).
2. The lost foam vacuum casting box of claim 1 having a uniform pressure, wherein: negative pressure subassembly (31) are including a plurality of first shell (311) of bleeding that run through and install in casting sand box body (1) inner chamber front and back both sides, casting sand box body (1) inner chamber bottom both sides all run through and install second shell (312) of bleeding, one side of first shell (311) and second shell (312) of bleeding all is located the inside of cavity (2), one side of first shell (311) and the top of second shell (312) of bleeding all are provided with ventilative sand blocking board (313), one side intercommunication that second shell (312) of bleeding is located cavity (2) inner chamber has four-way pipe (314), one side intercommunication that first shell (311) of bleeding is located cavity (2) inner chamber has first connecting pipe (315), one end intercommunication that first shell (311) were kept away from to both sides and first connecting pipe (315), the opposite side intercommunication of four-way pipe (314) has second connecting pipe (316).
3. A pressure-uniform lost foam vacuum casting box as defined in claim 2, wherein: the bottom of casting sand box body (1) both sides all is provided with vacuum pump (317), the inlet end intercommunication of vacuum pump (317) has exhaust tube (318), the one end that vacuum pump (317) was kept away from in exhaust tube (318) runs through casting sand box body (1) and with the one end intercommunication of second connecting tube (316).
4. The lost foam vacuum casting box of claim 1 having a uniform pressure, wherein: the casting sand box comprises a casting sand box body (1), wherein first fixed plates (321) are fixedly installed around the inner cavity of the casting sand box body (1), vertical rods (322) are installed on the surfaces of three first fixed plates (321) in a penetrating mode through bearings, first spiral stirring blades (323) are installed on the surfaces of the vertical rods (322), second fixed plates (324) are fixedly installed on the two sides of the inner cavity of the casting sand box body (1), second spiral stirring blades (325) are installed on the surfaces of the second fixed plates (324) in a penetrating mode through bearings, first belt pulleys (326) are fixedly installed on the top ends of the second spiral stirring blades (325), and second belt pulleys (327) are fixedly installed on the top ends of the vertical rods (322).
5. The lost foam vacuum casting box of claim 4, wherein: the utility model discloses a sand box for casting, including casting sand box body (1), motor (328) are installed to one side of casting sand box body (1) inner chamber, the output of motor (328) runs through a first fixed plate (321) and extends to the top of first fixed plate (321), the output fixed mounting of motor (328) has third belt pulley (329), the surface of third belt pulley (329) is around being equipped with driving belt (3201), be connected through driving belt (3201) transmission between third belt pulley (329), second belt pulley (327) and first belt pulley (326).
6. The lost foam vacuum casting box of claim 5, wherein: the surface of first fixed plate (321), second fixed plate (324) and motor (328) all installs protection casing (3202), one side of protection casing (3202) and the inner wall fixed connection of casting sand box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321948138.5U CN220259512U (en) | 2023-07-24 | 2023-07-24 | Lost foam vacuum casting box with uniform pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321948138.5U CN220259512U (en) | 2023-07-24 | 2023-07-24 | Lost foam vacuum casting box with uniform pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220259512U true CN220259512U (en) | 2023-12-29 |
Family
ID=89311333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321948138.5U Active CN220259512U (en) | 2023-07-24 | 2023-07-24 | Lost foam vacuum casting box with uniform pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220259512U (en) |
-
2023
- 2023-07-24 CN CN202321948138.5U patent/CN220259512U/en active Active
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| GR01 | Patent grant |