CN114160774A - Low-pressure die for large-scale new energy gearbox shell - Google Patents
Low-pressure die for large-scale new energy gearbox shell Download PDFInfo
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- CN114160774A CN114160774A CN202111464422.0A CN202111464422A CN114160774A CN 114160774 A CN114160774 A CN 114160774A CN 202111464422 A CN202111464422 A CN 202111464422A CN 114160774 A CN114160774 A CN 114160774A
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- mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a large-scale new forms of energy gearbox casing low pressure mould, includes mould, lower mould, device of loosing core, ejector pin, roof, its characterized in that: still include water-cooling integrated system, adopt guide pillar guide pin bushing swing joint between last mould and the lower mould, the device of loosing core is connected in the lower mould side, the ejector pin sets up in last mould and lower mould, the roof supports and leans on the upper end and swing joint at the ejector pin on going up the mould, water-cooling integrated system includes integrated package, quick-operation joint and water-cooling pipeline, the integrated package sets up on the lower mould, the water-cooling pipeline sets up in the mould, quick-operation joint is connected and is integrated on the integrated package with the water-cooling pipeline. The water-cooling integrated system can effectively solve the layout problem of a plurality of point cooling lines, and is beneficial to production and management; the core pulling device can effectively solve the problem that the pulling block is inconvenient to disassemble and assemble, is favorable for quickly and smoothly pulling the block in time, and reduces production interruption.
Description
Technical Field
The invention relates to the technical field of casting molds, in particular to a low-pressure mold for a large-scale new energy gearbox shell.
Background
The die is various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In the process of producing automobile parts, because the automobile parts are complex and many of the parts are of an integrated structure, a mold is generally adopted for production and processing in the production process of the automobile parts. The new energy gearbox shell is cast by sand mold in the conventional market at present, and the quality fluctuation of molding sand and core sand in the sand mold casting is large, so that castings have casting defects such as air holes, sand sticking, slag inclusion and the like. The mechanical properties of the castings cast by the sand mold are about 20% lower than those of the castings cast by the metal mold, and the corrosion resistance and the hardness of the castings are also reduced. The precision and surface finish of the cast product are also lower than those of the metal mold casting, and the quality is unstable. The existing metal mold casting generally adopts a single liquid lifting pipe, which is not beneficial to the mold punching and sequential solidification of castings. The existing metal mold casting water cooling generally adopts a mode of processing a precast hole, and has poor cooling effect on some complex castings. The existing metal mold casting core pulling dismounting structure is complex, needs to be dismounted after being dismounted, and is not beneficial to continuous production.
Disclosure of Invention
The invention aims to provide a low-pressure die for a large-scale new energy gearbox shell aiming at the defects of the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a large-scale new forms of energy gearbox casing low pressure mould, includes mould, lower mould, device of loosing core, ejector pin, roof, its characterized in that: still include water-cooling integrated system, adopt guide pillar guide pin bushing swing joint between last mould and the lower mould, the device of loosing core is connected in the lower mould side, the ejector pin sets up in last mould and lower mould, the roof supports and leans on the upper end and swing joint at the ejector pin on going up the mould, water-cooling integrated system includes integrated package, quick-operation joint and water-cooling pipeline, the integrated package sets up on the lower mould, the water-cooling pipeline sets up in the mould, quick-operation joint is connected and is integrated on the integrated package with the water-cooling pipeline.
Further, still be provided with roof guide structure, roof guide structure is including the direction lug and the guide way of mutually supporting, direction lug fixed connection be in go up the mould, the guide way sets up around the roof, the guide way can reciprocate along the direction lug.
Further, the device of loosing core adopts the quick change structure of loosing core, including hydro-cylinder, support frame, take out the piece and insert the connecting block soon, support frame fixed connection be in on the lower mould, hydro-cylinder fixed connection is on the support frame, and the piston front end of hydro-cylinder is connected with the guide post, take out the piece setting in the mould, the outside of taking out the piece is connected with takes out a connecting plate, it is provided with first recess on the connecting plate to take out, be provided with the second recess on the guide post, insert connecting block swing joint soon in first recess and second recess.
Furthermore, the water-cooling integrated system further comprises a plurality of water-cooling inserts arranged in the die, the water-cooling pipeline is arranged in the water-cooling inserts, and the lower end of the water-cooling pipeline is of a spiral structure.
Furthermore, the riser sleeve surface adopts a composite coating of aluminum titanate and aluminum silicate, wherein the content of aluminum titanate is 30 percent, and the content of aluminum silicate is 70 percent.
Furthermore, the die adopts double riser tubes for feeding, and a first feed inlet and a second feed inlet are formed in the bottom of the lower die.
Furthermore, the upper die and the lower die are made of an integral sand casting structure.
Compared with the prior art, the invention has the beneficial effects that: 1. the water-cooling integrated system can effectively solve the layout problem of a plurality of cold lines and is beneficial to production and management. 2. The die carrier adopts an integral sand casting structure, and can effectively solve the problems of die deformation and insufficient strength. 3. The top plate guide structure enables the top plate to be stable in the upward ejection process, and the problem that the top plate or the cover plate deforms in the ejection process is effectively solved. 4. The novel coating applied to the riser can effectively solve the problems of riser heat insulation and paint brushing, does not need to replace the riser per mold, can be used for 7-10 days, and reduces the cost. 5. The water-cooling insert structure for 3D printing can effectively solve the problem of limitation in water-cooling layout processing, can be designed according to process requirements, and solves the problem of a temperature field of a mold. 6. A core-pulling quick-change structure can effectively solve the problem that a pulling block is inconvenient to disassemble and assemble, is favorable for quickly and smoothly pulling the pulling block in time, and reduces production interruption. 7. The feeding of double liquid lifting pipes is adopted, so that the problems of fast temperature drop and poor feeding effect caused by overlong casting system can be effectively solved.
Drawings
FIG. 1 is a first overall structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the embodiment of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic view of the internal structure of the present invention;
FIG. 5 is a partial enlarged view of a core-pulling device according to the present invention;
FIG. 6 is a second enlarged view of a part of the core-pulling device of the present invention;
FIG. 7 is a schematic view of the water-cooled insert of the present invention;
fig. 8 is a bottom plan view of the present invention.
Wherein: 1-upper die, 2-lower die, 3-core pulling device, 4-ejector rod, 5-top plate, 6-integrated block, 7-quick joint, 8-water cooling pipeline, 9-water cooling insert, 21-first feed inlet, 22-second feed inlet, 31-oil cylinder, 32-support frame, 33-pulling block, 34-quick insertion connecting block, 35-guide column, 36-pulling block connecting plate, 37-first groove, 38-second groove, 51-guide projection and 52-guide groove.
Detailed Description
For the understanding of the present invention, the following detailed description will be given with reference to the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Fig. 1-8 show a large-scale new forms of energy gearbox casing low pressure mould, including last mould 1, lower mould 2, device 3 of loosing core, ejector pin 4, roof 5, still include water-cooling integrated system, it adopts guide pillar guide pin bushing swing joint to go up between mould 1 and the lower mould 2, device 3 of loosing core is connected in lower mould 2 side, ejector pin 4 sets up in last mould 1 and lower mould 2, roof 5 supports and leans on the upper end and swing joint on ejector pin 4 on last mould 1, water-cooling integrated system includes integrated package 6, quick-operation joint 7 and water-cooling pipeline 8, integrated package 6 sets up on lower mould 2, water-cooling pipeline 8 sets up in the mould, quick-operation joint 7 is connected with water-cooling pipeline 8 and is integrated on integrated package 6.
Preferably, as shown in fig. 3, a top plate guiding structure is further provided, the top plate guiding structure includes a guiding protrusion 51 and a guiding groove 52, the guiding protrusion 51 and the guiding groove 52 are matched with each other, the guiding protrusion 51 is fixedly connected to the upper die 1, the guiding groove 52 is arranged around the top plate 5, and the guiding groove 52 can move up and down along the guiding protrusion 51. As shown in fig. 5 and 6, the core pulling device 3 adopts a core pulling quick-change structure, and includes an oil cylinder 31, a support frame 32, a pulling block 33 and a quick-insertion connecting block 34, the support frame 32 is fixedly connected to the lower die 2, the oil cylinder 31 is fixedly connected to the support frame 32, the front end of a piston of the oil cylinder 31 is connected with a guide post 35, the pulling block 33 is arranged in the die, the outer side of the pulling block 33 is connected with a pulling block connecting plate 36, a first groove 37 is arranged on the pulling block connecting plate 36, a second groove 38 is arranged on the guide post 35, and the quick-insertion connecting block 34 is movably connected in the first groove 37 and the second groove 38. As shown in fig. 4 and 7, the water-cooling integrated system further includes a plurality of water-cooling inserts 9 disposed in the mold, the water-cooling pipeline 8 is disposed in the water-cooling inserts 9, and the lower end of the water-cooling pipeline 8 adopts a spiral structure. The riser sleeve surface adopts a composite coating of aluminum titanate and aluminum silicate, wherein the content of aluminum titanate is 30 percent, and the content of aluminum silicate is 70 percent. As shown in fig. 8, the mold is fed using a double lift pipe, and a first feed opening 21 and a second feed opening 22 are provided at the bottom of the lower mold 2. The upper die 1 and the lower die 2 are made of an integral sand casting structure.
The working process and principle of the above embodiment are as follows:
firstly, the feeding is carried out from the first feeding hole 21 and the second feeding hole 22 at the bottom of the lower die 2 to the interior of the die, and the feeding mode adopting the double liquid lifting pipes can effectively solve the problem that the temperature drop is too fast due to the overlong pouring system, so that the feeding effect is influenced. The surface of the riser sleeve adopts a composite coating of 30 percent of aluminum titanate and 70 percent of aluminum silicate, so that the problems of riser heat preservation and paint brushing can be effectively solved, and the riser can be used for 7 to 10 days without replacing each mould. After the feeding is finished, the casting is not beneficial to setting a dead head due to overlarge local thickness, and therefore forced cooling needs to be carried out through water cooling.
The external cooling water pipe is connected with the quick connector 7 of the water-cooling integrated system, cooling water flows into the water-cooling insert 9 arranged in the die through the water-cooling pipeline 8, the water-cooling pipeline 8 in the water-cooling insert 9 is of a spiral structure, the effective cooling area is further increased, the cooling efficiency is improved, the water-cooling insert 9 is manufactured through 3D printing, the processing layout of the water-cooling pipeline 8 is facilitated, and the technological means are enriched. The use of the water-cooling integrated system can be used for synthesizing the middle point of the die into the integrated block 6 in a cold mode, the water-cooling system can be conveniently disassembled and assembled on site, different water cooling is controlled through numbering, and the operation efficiency is improved. Different push rods 4 act on different positions of the top plate 5 during the upward movement, so that the stress in the vertical direction of the top plate 5 during the upward jacking process is unbalanced. The top plate guide structure limits the top plate 5 to slide only in the vertical direction through the guide protrusion 51 and the guide groove 52 which are matched with each other, and can effectively control the balance of the top plate 5 without overturning and horizontal movement.
After the mould uses a certain number of times, need will take out piece 33 and pull down and maintain, because traditional taking out the piece and being connected more complicated with the hydro-cylinder, demolish the change and need get off the machine to demolish to the mould is whole, and the time that consumes is longer, is unfavorable for continuous production. After the core-pulling quick-change structure is used, the connection relationship between the pulling block 33 and the oil cylinder 31 can be separated only by pulling the quick-insertion connecting block 34 upwards out of the first groove 37 and the second groove 38, and the separated pulling block 33 can be conveniently lifted out of the mold for maintenance. After the treatment is finished, the pulling block 33 is hung back on the mould, and the quick-insertion connecting block 34 is inserted into the first groove 37 and the second groove 38 again, so that the pulling block 33 and the oil cylinder 31 can be linked again.
The above embodiments are merely illustrative of the technical concept and structural features of the present invention, and are intended to be implemented by those skilled in the art, but the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should fall within the scope of the present invention.
Claims (7)
1. The utility model provides a large-scale new forms of energy gearbox casing low pressure mould, includes mould (1), lower mould (2), device (3) of loosing core, ejector pin (4), roof (5), its characterized in that: still include water-cooling integrated system, adopt guide pillar guide pin bushing swing joint between last mould (1) and lower mould (2), device (3) of loosing core is connected in lower mould (2) side, ejector pin (4) set up in last mould (1) and lower mould (2), roof (5) support and lean on the upper end and swing joint that lean on ejector pin (4) go up mould (1) on, water-cooling integrated system includes integrated package (6), quick-operation joint (7) and water-cooling pipeline (8), integrated package (6) set up on lower mould (2), water-cooling pipeline (8) set up in the mould, quick-operation joint (7) are connected with water-cooling pipeline (8) and integrated on integrated package (6).
2. The low-pressure die for the large-scale new energy gearbox shell according to claim 1, characterized in that: still be provided with roof guide structure, roof guide structure is including guide lug (51) and guide way (52) of mutually supporting, guide lug (51) fixed connection be in go up mould (1), guide way (52) set up roof (5) are all around, and guide way (52) can reciprocate along guide lug (51).
3. The low-pressure die for the large-scale new energy gearbox shell according to claim 1, characterized in that: core pulling device (3) adopt quick change structure of loosing core, include hydro-cylinder (31), support frame (32), take out piece (33) and insert connecting block (34) soon, support frame fixed connection be in on lower mould (2), hydro-cylinder (31) fixed connection is on support frame (32), and the piston front end of hydro-cylinder (31) is connected with guide post (35), take out piece (33) and set up in the mould, the outside of taking out piece (33) is connected with takes out piece connecting plate (36), be provided with first recess (37) on taking out piece connecting plate (36), be provided with second recess (38) on guide post (35), insert connecting block (34) swing joint soon in first recess (37) and second recess (38).
4. The low-pressure die for the large-scale new energy gearbox shell according to claim 1, characterized in that: the water-cooling integrated system further comprises a plurality of water-cooling inserts (9) arranged in the die, the water-cooling pipeline (8) is arranged in the water-cooling inserts (9), and the lower end of the water-cooling pipeline (8) is of a spiral structure.
5. The low-pressure die for the large-scale new energy gearbox shell according to claim 1, characterized in that: the riser sleeve surface on the lower die (2) adopts an aluminum titanate and aluminum silicate composite coating, wherein the content of aluminum titanate is 30 percent, and the content of aluminum silicate is 70 percent.
6. The low-pressure die for the large-scale new energy gearbox shell according to claim 1, characterized in that: the die adopts double riser tubes for feeding, and a first feeding hole (21) and a second feeding hole (22) are formed in the bottom of the lower die (2).
7. The low-pressure die for the large-scale new energy gearbox shell according to claim 1, characterized in that: the upper die (1) and the lower die (2) are made of an integral sand casting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111464422.0A CN114160774B (en) | 2021-12-03 | 2021-12-03 | Large new energy gearbox housing low-pressure die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111464422.0A CN114160774B (en) | 2021-12-03 | 2021-12-03 | Large new energy gearbox housing low-pressure die |
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| Publication Number | Publication Date |
|---|---|
| CN114160774A true CN114160774A (en) | 2022-03-11 |
| CN114160774B CN114160774B (en) | 2023-09-19 |
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| CN202111464422.0A Active CN114160774B (en) | 2021-12-03 | 2021-12-03 | Large new energy gearbox housing low-pressure die |
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2021
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| Publication number | Publication date |
|---|---|
| CN114160774B (en) | 2023-09-19 |
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