CN114160774B - Large new energy gearbox housing low-pressure die - Google Patents
Large new energy gearbox housing low-pressure die Download PDFInfo
- Publication number
- CN114160774B CN114160774B CN202111464422.0A CN202111464422A CN114160774B CN 114160774 B CN114160774 B CN 114160774B CN 202111464422 A CN202111464422 A CN 202111464422A CN 114160774 B CN114160774 B CN 114160774B
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- die
- water
- block
- cooling
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Links
- 238000001816 cooling Methods 0.000 claims abstract description 58
- 229910000505 Al2TiO5 Inorganic materials 0.000 claims description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 8
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000007528 sand casting Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000003031 feeding effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 208000026438 poor feeding Diseases 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- 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, core pulling device, ejector pin, roof, its characterized in that: the water cooling integrated system comprises an integrated block, a quick connector and a water cooling pipeline, wherein the integrated block is arranged on the lower die, the water cooling pipeline is arranged in the die, and the quick connector is connected with the water cooling pipeline and is integrated on the integrated block. The water-cooling integrated system can effectively solve the layout problem of a plurality of point cooling circuits, and is beneficial to production and management; the core pulling device can effectively solve the problem of inconvenient assembly and disassembly of the drawing block, is favorable for timely and rapidly sliding the drawing block, 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 new energy gearbox shell.
Background
The mould is a variety of moulds and tools used for injection moulding, blow moulding, extrusion, die casting or forging, smelting, stamping and other methods in industrial production to obtain the required products. In the process of producing automobile parts, the automobile parts are complex and are of an integrated structure, so that the production and processing are generally carried out by adopting a die in the production process of the automobile parts. The new energy gearbox shell is generally cast by adopting sand casting in the current market, and the quality fluctuation of molding sand and core sand in sand casting is large, so that casting defects such as air holes, sand sticking, slag inclusion and the like can be caused in castings. The mechanical properties of the sand cast casting are about 20% lower than those of the metal mold casting, and the corrosion resistance and hardness of the sand cast casting are also reduced. The precision and surface finish of the castings are also lower than those of metal mold casting, and the quality is unstable. The existing metal mold casting generally adopts a single lift tube, which is not beneficial to the casting punching and sequential solidification. The existing metal mold casting water cooling generally adopts a mode of processing a pre-cast hole, and has poor cooling effect on some complex castings. The existing metal mold casting core-pulling disassembly structure is complex, needs to be disassembled by a machine, and is not beneficial to continuous production.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a low-pressure die for a large-scale new energy gearbox shell.
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, core pulling device, ejector pin, roof, its characterized in that: the water cooling integrated system comprises an integrated block, a quick connector and a water cooling pipeline, wherein the integrated block is arranged on the lower die, the water cooling pipeline is arranged in the die, and the quick connector is connected with the water cooling pipeline and is integrated on the integrated block.
Further, still be provided with roof guide structure, roof guide structure includes guide lug and the guide way of mutually supporting, guide lug fixed connection is in on the last mould, the guide way sets up around the roof, the guide way can reciprocate along guide lug.
Further, core pulling device adopts 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 is 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, take out the outside of piece and be connected with and take out the piece connecting plate, take out and be provided with first recess on the piece connecting plate, be provided with the second recess on the guide post, insert connecting block swing joint soon be in first recess and the second recess.
Further, 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 adopts a spiral structure.
Furthermore, the surface of the riser bush adopts a composite coating of aluminum titanate and aluminum silicate, wherein the aluminum titanate content is 30 percent, and the aluminum silicate content is 70 percent.
Further, the die adopts double lift tube feeding, and a first feeding port and a second feeding port are arranged at 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 point cooling circuits, 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 guiding structure ensures that the top plate is kept stable in the upward ejection process, and the problem of deformation of the top plate or the cover plate in the ejection process is effectively solved. 4. The novel coating painted on the riser can effectively solve the problems of heat insulation and paint brushing of the riser, and the riser does not need to be replaced every mould, so that the riser can be used for 7-10 days, and the cost is reduced. 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 mold temperature field. 6. A loose core quick-change structure can effectively solve the problem of inconvenient assembly and disassembly of a drawing block, is favorable for timely and quickly sliding the drawing block, and reduces production interruption. 7. By adopting the double lift tube for feeding, the problems of rapid temperature drop and poor feeding effect caused by overlong pouring systems can be effectively solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of a second 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 an enlarged view of a portion of the core back apparatus of the present invention;
FIG. 6 is a partially enlarged view of a core back device according to the present invention;
FIG. 7 is a schematic view of a water-cooled insert according to the present invention;
fig. 8 is a bottom 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 connector, 8-water cooling pipeline, 9-water cooling insert, 21-first feed inlet, 22-second feed inlet, 31-oil cylinder, 32-support frame, 33-extraction block, 34-quick-plug connection block, 35-guide column, 36-extraction block connection plate, 37-first groove, 38-second groove, 51-guide lug and 52-guide groove.
Detailed Description
In order to enhance the understanding of the present invention, the present invention will be further described in detail with reference to the drawings, which are provided for the purpose of illustrating the present invention only and are not to be construed as limiting the scope of the present invention.
Fig. 1-8 show a large new energy gearbox housing low-pressure die, which comprises an upper die 1, a lower die 2, a core pulling device 3, a push rod 4 and a top plate 5, and further comprises a water cooling integrated system, wherein the upper die 1 and the lower die 2 are movably connected through guide posts and guide sleeves, the core pulling device 3 is connected to the side surface of the lower die 2, the push rod 4 is arranged in the upper die 1 and the lower die 2, the top plate 5 is abutted against the upper end of the push rod 4 and is movably connected to the upper die 1, the water cooling integrated system comprises an integrated block 6, a quick connector 7 and a water cooling pipeline 8, the integrated block 6 is arranged on the lower die 2, the water cooling pipeline 8 is arranged in the die, and the quick connector 7 is connected with the water cooling pipeline 8 and is integrated on the integrated block 6.
Preferably, as shown in fig. 3, a top plate guiding structure is further provided, the top plate guiding structure includes a guiding protruding block 51 and a guiding groove 52, the guiding protruding block 51 is fixedly connected to the upper die 1, the guiding groove 52 is disposed around the top plate 5, and the guiding groove 52 can move up and down along the guiding protruding block 51. As shown in fig. 5 and 6, the core pulling device 3 adopts a core pulling quick-change structure, and comprises an oil cylinder 31, a support frame 32, a pulling block 33 and a quick-plug connection block 34, wherein the support frame 32 is fixedly connected to the lower die 2, the oil cylinder 31 is fixedly connected to the support frame 32, a guide post 35 is connected to the front end of a piston of the oil cylinder 31, the pulling block 33 is arranged in the die, a pulling block connection plate 36 is connected to the outer side of the pulling block 33, a first groove 37 is arranged on the pulling block connection plate 36, a second groove 38 is arranged on the guide post 35, and the quick-plug connection block 34 is movably connected to the first groove 37 and the second groove 38. As shown in fig. 4 and 7, the water-cooling integrated system further comprises a plurality of water-cooling inserts 9 arranged in the mold, the water-cooling pipeline 8 is arranged in the water-cooling inserts 9, and the lower end of the water-cooling pipeline 8 adopts a spiral structure. The surface of the riser bush adopts a composite coating of aluminum titanate and aluminum silicate, wherein the aluminum titanate content is 30 percent, and the aluminum silicate content is 70 percent. As shown in fig. 8, the mold is fed by a double lift tube, and a first feed port 21 and a second feed port 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 first feeding port 21 and the second feeding port 22 at the bottom of the lower die 2 are used for feeding materials into the die, and the feeding mode of adopting the double liquid lifting pipes can effectively solve the problem that the temperature drop is too fast due to overlong pouring systems, so that the feeding effect is affected. The surface of the riser sleeve adopts a 30% aluminum titanate and 70% aluminum silicate composite coating, so that the problems of riser heat insulation and paint brushing can be effectively solved, and the riser can be used for 7-10 days without replacing each mould. After the feeding is finished, the casting is unfavorable for setting up the dead head due to the overlarge local thickness of the casting, so forced cooling by water cooling is needed.
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 adopts 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 water cooling integrated system can be used for synthesizing the point cooling in the die into the integrated block 6, so that the water cooling system can be conveniently assembled and disassembled on site, different water cooling can be controlled through numbering, and the operation efficiency is improved. Different ejector rods 4 can act on different positions of the top plate 5 in the upward moving process, so that the stress of the top plate 5 in the vertical direction is unbalanced in the upward jacking process. The top plate guiding structure limits the top plate 5 to slide along the vertical direction only by the guiding convex blocks 51 and the guiding grooves 52 which are matched with each other, so that the balance of the top plate 5 can be effectively controlled without overturning and horizontally moving.
After the mold is used for a certain number of times, the drawing block 33 needs to be disassembled for maintenance, and the conventional connection between the drawing block and the oil cylinder is complex, so that the mold is required to be disassembled and replaced integrally, the consumed time is long, and the continuous production is not facilitated. After the core pulling quick-change structure is used, the connection relation between the drawing block 33 and the oil cylinder 31 can be separated only by drawing the quick-insert connecting block 34 upwards from the first groove 37 and the second groove 38, and the drawing block 33 after separation can be conveniently lifted out of the die for maintenance. After the processing is completed, the drawing block 33 is hung back on the die, and the quick-connect block 34 is inserted into the first groove 37 and the second groove 38 again, so that the drawing block 33 and the oil cylinder 31 can be linked again.
The foregoing detailed description will set forth only for the purposes of illustrating the general principles and features of the invention, and is not meant to limit the scope of the invention in any way, but rather should be construed in view of the appended claims.
Claims (2)
1. The utility model provides a large-scale new forms of energy gearbox casing low pressure mould, includes mould (1), lower mould (2), core pulling device (3), ejector pin (4), roof (5), its characterized in that: the novel aluminum titanate and aluminum silicate composite coating is characterized by further comprising a water-cooling integrated system, wherein a guide pillar and guide sleeve movable connection is adopted between the upper die (1) and the lower die (2), the core pulling device (3) is connected to the side face of the lower die (2), the ejector rod (4) is arranged in the upper die (1) and the lower die (2), the top plate (5) is abutted against the upper end of the ejector rod (4) and is movably connected to the upper die (1), the water-cooling integrated system comprises an integrated block (6), a quick connector (7) and a water-cooling pipeline (8), the integrated block (6) is arranged on the lower die (2), the water-cooling pipeline (8) is arranged in the die, the quick connector (7) is connected with the water-cooling pipeline (8) and is integrated on the integrated block (6), and the surface of the riser sleeve on the lower die (2) is coated with aluminum titanate and aluminum silicate composite coating, wherein the aluminum titanate content is 30%, and the aluminum silicate content is 70%;
the upper die is also provided with a top plate guide structure, the top plate guide structure comprises guide convex blocks (51) and guide grooves (52) which are matched with each other, the guide convex blocks (51) are fixedly connected to the upper die (1), the guide grooves (52) are arranged around the top plate (5), and the guide grooves (52) can move up and down along the guide convex blocks (51);
the core pulling device (3) adopts a core pulling quick-change structure and comprises an oil cylinder (31), a support frame (32), a pulling block (33) and a quick-inserting connecting block (34), wherein the support frame is fixedly connected to the lower die (2), the oil cylinder (31) is fixedly connected to the support frame (32), a guide column (35) is connected to the front end of a piston of the oil cylinder (31), the pulling block (33) is arranged in a die, a pulling block connecting plate (36) is connected to the outer side of the pulling block (33), a first groove (37) is formed in the pulling block connecting plate (36), a second groove (38) is formed in the guide column (35), and the quick-inserting connecting block (34) is movably connected to the first groove (37) and the second groove (38);
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) adopts a spiral structure;
the die adopts double lift tube feeding, and the bottom of lower mould (2) is provided with first feed inlet (21) and second feed inlet (22).
2. The large new energy gearbox housing low-pressure die of claim 1, wherein: 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114160774A CN114160774A (en) | 2022-03-11 |
| CN114160774B true CN114160774B (en) | 2023-09-19 |
Family
ID=80482695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111464422.0A Active CN114160774B (en) | 2021-12-03 | 2021-12-03 | Large new energy gearbox housing low-pressure die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114160774B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1283692A (en) * | 1968-09-25 | 1972-08-02 | Foseco Int | Refractory heat insulating materials |
| JP2000254768A (en) * | 1999-03-09 | 2000-09-19 | Nippon Light Metal Co Ltd | Mold for cast-in pipe |
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2021
- 2021-12-03 CN CN202111464422.0A patent/CN114160774B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114160774A (en) | 2022-03-11 |
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