CN217252739U - Quick even heat dissipation die block of low pressure casting - Google Patents
Quick even heat dissipation die block of low pressure casting Download PDFInfo
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- CN217252739U CN217252739U CN202221145090.XU CN202221145090U CN217252739U CN 217252739 U CN217252739 U CN 217252739U CN 202221145090 U CN202221145090 U CN 202221145090U CN 217252739 U CN217252739 U CN 217252739U
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Abstract
The utility model relates to the technical field of molds, and discloses a quick and uniform heat dissipation bottom die for low-pressure casting, which solves the problems of poor appearance of a wheel hub blank caused by the uneven heat absorption and uneven heat dissipation and cooling of the existing low-pressure casting bottom die; the bottom die can be effectively, quickly and uniformly cooled and the cooling of the bottom die can be guaranteed, so that the appearance quality of a low-pressure casting blank can be further improved, the quality of the wheel rib root and the rim of the blank can be guaranteed, the labor intensity of workers can be reduced, and the production quality can be guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the mould, specifically be a quick even heat dissipation die block of low pressure casting.
Background
The low-pressure casting aluminum alloy hub is widely favored by the market due to the special shape and beautiful appearance, but with the increasing competition of the aluminum alloy hub market, the shape of the low-pressure casting hub continuously tends to be complicated and diversified, the requirement on the appearance of the product is further tightened, and the production and the manufacture of a low-pressure casting aluminum alloy hub factory are undoubtedly challenged.
In the production process of the low-pressure cast aluminum alloy wheel hub, when high-temperature aluminum liquid enters a die cavity, due to the non-uniformity of the thickness of a bottom die body, the high-temperature aluminum liquid is different in heat absorption effect of the die bottom die at different positions, and part of the high-temperature aluminum liquid can be rapidly solidified, so that the cutoff phenomenon is easily generated, the wheel hub blank is caused to generate the spoke root, the position of a wheel rim is shrunk and loosened, the air holes and other poor defects, waste products are formed, the yield is reduced, and the economic loss is caused. Meanwhile, in the process of cooling the mold and the blank in a hot state, the surface temperature of the mold is high due to the fact that the surface of the bottom mold of the low-pressure casting hub mold is filled with high-temperature aluminum liquid, and therefore the low-pressure casting hub mold is prone to being adhered to the hub blank in a high-temperature state, the appearance of the low-pressure casting hub blank is poor, workers need to stop to maintain the low-pressure casting hub mold, labor intensity of the workers is increased, and quality of the inside and the outside of production on site is severely limited.
SUMMERY OF THE UTILITY MODEL
To the aforesaid condition, for overcoming prior art's defect, the utility model provides a quick even heat dissipation die block of low pressure casting, the effectual phenomenon of damming that leads to and the inhomogeneous problem that leads to wheel hub blank outward appearance of heat dissipation cooling that has solved the inhomogeneous result of current low pressure casting die block heat absorption.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a quick even heat dissipation die block of low pressure casting, includes the die block body, one side of die block body is provided with the shaping chamber, and the opposite side that the shaping chamber was kept away from to the die block body is provided with back of the body chamber, and back of the body chamber outline is close to spoke muscle root position and is provided with the plum blossom die cavity, and a plurality of locating holes have been seted up to the inside in back of the body chamber, sets up a plurality of fretwork exhaust lines that run through in shaping chamber and back of the body chamber on the die block body.
Preferably, the thickness of the bottom die body is 12-15 mm.
Preferably, the width of the hollowed-out exhaust line is 0.2 mm.
Preferably, a plurality of inner cooling water channels are formed in the bottom die body.
Preferably, one side of the bottom die body is provided with a liquid inlet pipe communicated with the inner cooling water channel, and the other side of the bottom die body is provided with a liquid discharge pipe communicated with the inner cooling water channel.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) during work, the back cavity of the low-pressure casting bottom die is subjected to form milling according to the front molding of the bottom die by optimally designing the back cavity molding of the low-pressure casting bottom die, and meanwhile, the thickness of the bottom die body is uniformly controlled to be 12-15mm, so that the back cavity molding of the bottom die and the front molding are uniform and consistent, and the uniformity of heat absorption and cooling of the bottom die is ensured;
(2) the outer contour of the back cavity of the bottom die is turned into a quincuncial shape close to the rib root part of the spoke, namely the filling temperature of the rib root part of the blank is increased while the bottom die is assembled, so that the fluidity of high-temperature aluminum liquid in the die cavity is ensured, and the tendency of shrinkage porosity of the spoke root part and the rim is further reduced;
(3) according to the back cavity, the front molding and the area range of the bottom die window position, a hollowed-out exhaust line with the width of 0.2mm is processed at the bottom die window position by utilizing a linear cutting technology, and the mixed gas of a die cavity in the mold filling process is effectively exhausted while the window position is lifted to be cooled, so that the appearance of a blank is improved while the gas holes and poor shrinkage porosity are reduced;
(4) the bottom die is directly milled to form a positioning hole, an air claw of the air ring can be positioned when air is cooled, and the position of cooling air is guaranteed, so that fixed-point cooling is realized, uniform liquid cooling of the bottom die can be realized through the arrangement of the inner cooling water channel, the liquid inlet pipe and the liquid discharge pipe, and the cooling efficiency is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is one of the schematic structural views of the bottom die body of the present invention;
fig. 2 is a second schematic structural view of the bottom die body of the present invention;
fig. 3 is a third schematic view of the bottom die body structure of the present invention;
fig. 4 is a sectional view of the bottom die body of the present invention;
in the figure: 1. a bottom die body; 2. a molding cavity; 3. a back cavity; 4. a plum blossom-shaped cavity; 5. positioning holes; 6. hollowing out an exhaust line; 7. an internal cooling water channel; 8. a liquid inlet pipe; 9. and a liquid discharge pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the utility model comprises a bottom die body 1, wherein a forming cavity 2 is arranged on one side of the bottom die body 1, a back cavity 3 is arranged on the other side of the bottom die body 1 away from the forming cavity 2, a quincuncial cavity 4 is arranged on the outer contour of the back cavity 3 close to the rib root of the spoke, a plurality of positioning holes 5 are arranged in the back cavity 3, and a plurality of hollowed-out exhaust lines 6 which run through the forming cavity 2 and the back cavity 3 are arranged on the bottom die body 1;
as shown in fig. 1 to 4, the thickness of the bottom die body 1 is 12-15mm, the back cavity of the bottom die is uniform and consistent with the front cavity of the bottom die, so that the uniformity of heat absorption and cooling of the bottom die is ensured, the width of the hollowed-out exhaust line 6 is 0.2mm, mixed gas in a die cavity in a mold filling process is effectively discharged while cooling of a lifting window position, and therefore the appearance of a blank is improved while air holes and poor shrinkage and loosening are reduced, a plurality of inner cooling water channels 7 are formed in the bottom die body 1, a liquid inlet pipe 8 communicated with the inner cooling water channels 7 is arranged on one side of the bottom die body 1, and a liquid discharge pipe 9 communicated with the inner cooling water channels 7 is arranged on the other side of the bottom die body 1, so that the water cooling of the bottom die body 1 can be realized, and the cooling efficiency is improved.
In the working process, the molding of the back cavity of the low-pressure casting bottom die is optimally designed, the follow-up milling processing is carried out on the back cavity of the low-pressure casting bottom die according to the front molding of the bottom die, and meanwhile, the thickness of the bottom die body is uniformly controlled to be 12-15mm, so that the molding of the back cavity of the bottom die is uniform and consistent with the front molding, and the uniformity of heat absorption and cooling of the bottom die is ensured; the outer contour of the back cavity of the bottom die is turned into a quincuncial shape close to the rib root part of the spoke, so that the filling temperature of the rib root part of a blank is increased while the bottom die is assembled, the fluidity of high-temperature molten aluminum in the cavity of the die is ensured, and the tendency of shrinkage porosity of the spoke root part and the rim is further reduced; according to the back cavity, the front molding and the area range of the bottom die window position, a hollowed-out exhaust line with the width of 0.2mm is processed at the bottom die window position by utilizing a linear cutting technology, and the mixed gas in the die cavity in the mold filling process is effectively exhausted while the window position is lifted to be cooled, so that the appearance of a blank is improved while the gas holes and poor shrinkage porosity are reduced; the bottom die is directly milled to form a positioning hole, an air claw of the air ring can be positioned during air cooling, the position of cooling air is guaranteed, fixed-point cooling is achieved, uniform liquid cooling of the bottom die can be achieved through the arrangement of the inner cooling water channel, the liquid inlet pipe and the liquid discharge pipe, and cooling efficiency is improved.
Claims (5)
1. The utility model provides a quick even heat dissipation die block of low pressure casting, includes die block body (1), its characterized in that: one side of die block body (1) is provided with one-tenth die cavity (2), and the opposite side that die block body (1) kept away from one-tenth die cavity (2) is provided with back of the body chamber (3), and back of the body chamber (3) outline is close to spoke rib root position and is provided with plum blossom die cavity (4), and a plurality of locating holes (5) have been seted up to the inside in back of the body chamber (3), sets up on die block body (1) a plurality of fretwork exhaust lines (6) that run through in one-tenth die cavity (2) and back of the body chamber (3).
2. The bottom die for rapid and uniform heat dissipation in low-pressure casting according to claim 1, wherein: the thickness of the bottom die body (1) is 12-15 mm.
3. The bottom die for rapid and uniform heat dissipation in low-pressure casting according to claim 1, wherein: the width of the hollowed-out exhaust line (6) is 0.2 mm.
4. The bottom die for rapid and uniform heat dissipation in low-pressure casting according to claim 1, wherein: a plurality of inner cooling water channels (7) are formed in the bottom die body (1).
5. The bottom die for rapid and uniform heat dissipation in low-pressure casting according to claim 1, wherein: and a liquid inlet pipe (8) communicated with the inner cooling water channel (7) is arranged on one side of the bottom die body (1), and a liquid discharge pipe (9) communicated with the inner cooling water channel (7) is arranged on the other side of the bottom die body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221145090.XU CN217252739U (en) | 2022-05-13 | 2022-05-13 | Quick even heat dissipation die block of low pressure casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221145090.XU CN217252739U (en) | 2022-05-13 | 2022-05-13 | Quick even heat dissipation die block of low pressure casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217252739U true CN217252739U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221145090.XU Active CN217252739U (en) | 2022-05-13 | 2022-05-13 | Quick even heat dissipation die block of low pressure casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217252739U (en) |
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2022
- 2022-05-13 CN CN202221145090.XU patent/CN217252739U/en active Active
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