Gravity casting mold capable of preventing heat accumulation

Abstract

The invention discloses a gravity casting mold capable of preventing heat accumulation, and relates to the technical field of casting molds. A gravity casting mold capable of preventing heat accumulation comprises a first mold body, a second mold body, a first temperature control plate and a second temperature control plate, the first mold body and the second mold body are provided with a first heat conduction groove and a second heat conduction groove respectively, and the first temperature control plate is provided with a first heat conduction block correspondingly connected with the first heat conduction groove in an inserted mode; through the arrangement, the contact area between the mold and the temperature control plate is greatly increased, the heat conductivity between the mold and the temperature control plate is improved, the stability and the uniformity of the mold temperature can be improved through the temperature control plate, and the mold temperature is improved. And therefore, the problem that local heat accumulation is easily generated in the cavity of the mold can be effectively reduced, and adverse effects on a casting caused by non-uniform heat dispersion of the mold can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of casting moulds, in particular to an anti-heat accumulation gravity casting mould. Background Art

[0002] In recent years, with the advancement and development of industrial manufacturing technology, gravity casting, as an important metal forming process, has been widely used in the preparation of parts in many industries such as automobiles and aerospace.

[0003] In the gravity casting process, not only does the casting need to be kept warm and pressurized for a long time, but it also needs to achieve uniform heat dissipation and cooling. However, when producing some castings with thick walls and complex shapes, the mold heat dissipation is uneven due to the different thicknesses at different positions in the corresponding cavity of the mold, which easily leads to local heat accumulation or overcooling in the cavity, and causes many quality problems such as thermal cracks, shrinkage holes, and poor surface forming in the casting. These quality problems not only directly affect the final performance of the casting, but also increase the cost and difficulty of subsequent processing. Summary of the invention

[0004] In order to improve the uniformity and stability of the cavity temperature in the gravity casting mold, reduce the problem of local heat accumulation in the cavity, and prevent the adverse effects on the casting caused by uneven heat distribution in the gravity casting mold, the present application provides an anti-heat accumulation gravity casting mold.

[0005] The anti-heat accumulation gravity casting mold provided in this application adopts the following technical solution: An anti-heat accumulation gravity casting mold, comprising: A first mold, wherein the first mold is provided with a first cavity, and a plurality of first heat-conducting grooves are evenly provided on a side away from the first cavity; A second mold, wherein the second mold is provided with a second cavity, and a plurality of second heat-conducting grooves are evenly provided on a side away from the second cavity; A first temperature control plate, the first temperature control plate is fixedly arranged on a side of the first mold away from the first cavity, the first temperature control plate is provided with a first heat conducting block corresponding to the first heat conducting groove, and the first heat conducting block is plug-connected with the first heat conducting groove; a second temperature control plate, the second temperature control plate being fixedly arranged on a side of the second mold away from the second cavity, the second temperature control plate being provided with a second heat conducting block corresponding to the second heat conducting groove, and the second heat conducting block and the second heat conducting groove being plug-connected to each other; Wherein, the first temperature control plate and the second temperature control plate are both externally connected to an independent temperature control system, and the temperature control system is used to control the temperature of the first temperature control plate and the second temperature control plate.

[0006] By adopting the above technical scheme, by arranging a plurality of evenly distributed first heat-conducting grooves and second heat-conducting grooves on the first mold and the second mold, and arranging first heat-conducting blocks and second heat-conducting blocks that are matched and plugged therein on the first temperature control plate and the second temperature control plate, the contact area between the first mold and the first temperature control plate, and between the second mold and the second temperature control plate is greatly increased, which is not only beneficial to improving the thermal conductivity of the first mold and the second mold, so that the first temperature control plate and the first mold, and the second temperature control plate and the second mold can fully exchange heat, thereby achieving more accurate and uniform temperature control of the first mold and the second mold, but also beneficial to improving the temperature stability and uniformity of the first mold and the second mold, which can effectively reduce the problem of local heat accumulation or local overcooling in the cavity, and is beneficial to preventing adverse effects on castings caused by uneven heat distribution of the mold.

[0007] Optionally, a first heat-conducting cavity is provided on the inner side of the first temperature control plate, and a first liquid inlet pipe and a first liquid outlet pipe communicating with the first heat-conducting cavity are provided on the outer peripheral side of the first temperature control plate; a second heat-conducting cavity is provided on the inner side of the second temperature control plate, and a second liquid inlet pipe and a second liquid outlet pipe communicating with the second heat-conducting cavity are provided on the second temperature control plate; The first liquid inlet pipe, the first liquid outlet pipe, the second liquid inlet pipe and the second liquid outlet pipe are all interconnected with the temperature control system, and the temperature control system can circulate and pump heat transfer oil into the first heat transfer cavity and the second heat transfer cavity through the first liquid inlet pipe and the first liquid outlet pipe, the second liquid inlet pipe and the second liquid inlet pipe respectively.

[0008] By adopting the above technical solution, heat transfer oil is circulated and pumped into the first heat transfer cavity and the second heat transfer cavity by using the temperature control system. The temperature of the first temperature control plate and the second temperature control plate can be adjusted by heating or cooling the heat transfer oil. Then, the temperature of the first mold and the second mold can be adjusted and controlled through heat transfer between the heat transfer templates.

[0009] Optionally, the width of the first heat-conducting groove is 1 / 15 of the overall width of the first mold, and the width between adjacent first heat-conducting grooves is the same as the width of the first heat-conducting groove; The width of the second heat-conducting groove is 1 / 15 of the overall width of the second mold, and the width between adjacent second heat-conducting grooves is the same as the width of the second heat-conducting groove.

[0010] Optionally, the depth of the first heat-conducting groove not located on the front and back sides of the first cavity is 2 / 3 of the overall thickness of the first mold, and the thickness of the gap between the bottom of the first heat-conducting groove located on the front and back sides of the first cavity and the cavity wall of the first cavity is 1 / 3 of the overall thickness of the first mold; The opening depth of the second heat-conducting groove not located on the front and back sides of the second cavity is 2 / 3 of the overall thickness of the second mold, and the spacing thickness between the bottom of the second heat-conducting groove on the front and back sides of the second cavity and the cavity wall of the second cavity is 1 / 3 of the overall thickness of the second mold.

[0011] By adopting the above technical solution and reasonably setting the opening width, spacing width and opening depth of the first heat-conducting groove and the second heat-conducting groove, the first mold and the second mold can retain a certain structural thickness, which is not only conducive to ensuring the structural strength of the first mold and the second mold, so that the template can not only meet the requirements of gravity casting, but also withstand long-term high temperature and reduce thermal fatigue of the template; it is also conducive to the first mold and the second mold to maintain temperature stability and evenly distribute heat in the cavity, which is conducive to preventing the casting from being affected by uneven heat distribution of the mold. Optionally, the side wall of the first heat-conducting block is provided with a first exhaust groove, and the side wall of the second heat-conducting block is provided with a second exhaust groove.

[0012] By adopting the above technical solution, the first exhaust groove can fully guide and exhaust the air in the first heat-conducting groove when the first heat-conducting block is inserted into the first heat-conducting groove, so that the first heat-conducting block can be smoothly inserted, and the second exhaust groove of the second heat-conducting block is similar. This is conducive to better inserting the first heat-conducting block and the second heat-conducting block into the first heat-conducting groove and the second heat-conducting groove respectively, making the assembly and disassembly process of the first temperature control board and the second temperature control board smoother.

[0013] Optionally, the edges of the first heat conducting block and the second heat conducting block are both rounded.

[0014] By adopting the above technical solution, the edges of the first heat conductive block and the second heat conductive block are chamfered, which is conducive to better inserting the first heat conductive block and the second heat conductive block into the first heat conductive groove and the second heat conductive groove respectively, making the assembly and disassembly process of the first temperature control plate and the second temperature control plate smoother.

[0015] Optionally, surfaces of the first heat-conducting groove, the first heat-conducting block, the second heat-conducting groove and the second heat-conducting block are polished, and thermal grease is filled between the first heat-conducting block and the first heat-conducting groove, and between the second heat-conducting block and the second heat-conducting groove.

[0016] By adopting the above technical solution, the surface roughness between the first heat-conducting block and the first heat-conducting groove, and between the second heat-conducting block and the second heat-conducting groove can be further reduced, and the friction force can be reduced, so that the installation or removal of the first temperature control plate and the second temperature control plate can be smoother. In addition, the gap between the first heat-conducting block and the first heat-conducting groove, and between the second heat-conducting block and the second heat-conducting groove is filled with thermal grease with high thermal conductivity efficiency, which can effectively fill the gap and reduce the air thermal resistance in the gap, which is beneficial to improve the heat conduction efficiency between the first mold and the first temperature control plate, and between the second mold and the second temperature control plate, so that the first temperature control plate and the second temperature control plate can perform more accurate and uniform temperature control.

[0017] Optionally, the second cavity includes a second core cavity for placing a core, the second mold is provided with a plurality of exhaust holes at positions corresponding to the second core cavity, the exhaust holes vertically penetrate the second mold, the second temperature control plate is provided with a plurality of exhaust extension holes at positions corresponding to the exhaust holes, and the exhaust through holes are interconnected.

[0018] By adopting the above technical solution, the exhaust through hole and the exhaust extension hole can make the second core cavity fully connected with the outside world when the first mold and the second mold are closed, so that the original air inside the cavity and the gas brought in by the molten metal can be fully discharged to the outside world during the pouring process, which is conducive to reducing the occurrence of casting defects such as pores. In addition, the exhaust through hole and the exhaust extension hole can also promote the heat exchange between the inside of the cavity and the outside world through exhaust, which is conducive to improving the heat dissipation effect inside the cavity, which is crucial for controlling the solidification speed of the casting and preventing the generation of heat accumulation.

[0019] Optionally, the second cavity includes a second casting cavity for molding a casting, and an overflow groove is provided on a surface of the second mold close to the second cavity, and the overflow groove connects the second casting cavity with a side surface of the second mold.

[0020] By adopting the above technical scheme, in addition to assisting in the discharge of gas in the cavity and storing cold and dirty molten metal, the overflow groove can also prevent the molten metal in the cavity from generating eddy heat accumulation by exhausting and entraining air, adjust the temperature of various parts in the casting cavity, improve the thermal balance of the mold, and help reduce shrinkage holes, marks or cold shuts in the casting caused by heat accumulation of molten metal in the cavity.

[0021] Optionally, the overflow groove has a depth of 1-1.5 mm.

[0022] By adopting the above technical solution, the depth of the overflow groove is controlled at 1-1.5mm, which can prevent the casting molten metal from clogging the overflow groove and control the overflow flow of the molten metal, which is beneficial to prevent the molten metal from excessively splashing outward and generating flash and flying materials.

[0023] In summary, the technical solution of this application has at least one of the following beneficial effects: 1. By providing a plurality of evenly distributed first heat-conducting grooves and second heat-conducting grooves, and providing first heat-conducting blocks and second heat-conducting blocks matched and plugged therewith, the contact area between the first mold and the first temperature control plate, and between the second mold and the second temperature control plate, is greatly increased, which is not only conducive to improving the thermal conductivity between the mold and the temperature control plate, so that the first temperature control plate and the first mold, and the second temperature control plate and the second mold can fully exchange heat, but also can improve the stability and uniformity of the mold temperature through the temperature control plate, thereby effectively reducing the problem of local heat accumulation or local overcooling in the cavity, and is conducive to preventing the adverse effects on the casting caused by uneven heat distribution of the mold.

[0024] 1. By reasonably controlling the size of the first heat-conducting groove and the second heat-conducting groove, the first mold and the second mold can retain a certain structural thickness, which is not only conducive to ensuring the structural strength of the first mold and the second mold themselves, but also conducive to maintaining the temperature of the first mold and the second mold, and evenly distributing the heat in the cavity, thereby preventing the casting from being affected by uneven heat distribution of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front structure explosion of an anti-heat accumulation gravity casting mold in an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the explosion of the back structure of an anti-heat accumulation gravity casting mold in an embodiment of the present application.

[0027] Figure 3 It is a front view of an anti-heat accumulation gravity casting mold in an embodiment of the present application.

[0028] Figure 4 yes Figure 3 Cross-sectional view of AA.

[0029] Figure 5 It is a schematic structural diagram of a second mold of an anti-heat accumulation gravity casting mold in an embodiment of the present application, wherein the second mold is shown facing the side of the first mold.

[0030] Description of reference numerals: 1. First mold; 11. First mold cavity; 111. First casting cavity; 112. First core cavity; 12. First heat conduction groove; 2. Second mold. 21. Second mold cavity; 211. Second casting cavity; 212. Second core cavity; 22. Second heat conduction groove; 23. Exhaust hole; 24. Overflow groove; 3. First temperature control board; 31. First heat conduction cavity; 32. First liquid inlet pipe; 33. First liquid outlet pipe; 34. First heat conduction block; 341. First exhaust groove; 4. Second temperature control board; 41. Second heat conduction cavity; 42. Second liquid inlet pipe; 43. Second liquid outlet pipe; 44. Second heat conduction block; 441. Second exhaust groove; 45. Exhaust extension hole. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] The present application embodiment discloses a heat-preventing gravity casting mold. Figure 1 and Figure 2 A heat-preventing gravity casting mold comprises a first mold 1, a second mold 2, a first temperature control plate 3 and a second temperature control plate 4, wherein the first temperature control plate 3 is fixedly arranged on a side of the first mold 1 away from the second mold 2, and the second temperature control plate 4 is arranged on a side of the second mold 2 away from the first mold 1. The first temperature control plate 3 and the second temperature control plate 4 are both externally connected to an independent temperature control system, and the temperature control system is used to control the temperature of the first temperature control plate 3 and the second temperature control plate 4, and heat and insulate the first mold 1 and the second mold 2 or dissipate heat and cool them respectively through the temperature changes of the first temperature control plate 3 and the second temperature control plate 4, thereby realizing temperature control of the first mold 1 and the second mold 2.

[0033] Reference Figure 2 , Figure 3 and Figure 4 , a first heat-conducting cavity 31 is provided on the inner side of the first temperature-controlling plate 3, and a first liquid inlet pipe 32 and a first liquid outlet pipe 33 communicating with the first heat-conducting cavity 31 are provided on the outer side of the first temperature-controlling plate 3, and the first liquid inlet pipe 32 and the first liquid outlet pipe 33 are both communicated with the external temperature-controlling system. Similarly, a second heat-conducting cavity 41 is also provided on the inner side of the second temperature-controlling plate 4, and a second liquid inlet pipe 42 and a second liquid outlet pipe 43 communicating with the external temperature-controlling system are provided on the outer side. Among them, the temperature-controlling system can circulate and pump heat-conducting oil into the first heat-conducting cavity 31 of the first temperature-controlling plate 3 through the first liquid inlet pipe 32 and the first liquid outlet pipe 33. Specifically, in this embodiment, the external temperature-controlling system can select a heat-conducting oil cooling and heating dynamic temperature-controlling system. Thus, heat transfer oils of different temperatures are pumped into the first heat transfer cavity 31 and the second heat transfer cavity 41 respectively through an external temperature control system, so that the first temperature control plate 3 and the second temperature control plate 4 can achieve temperature regulation, and can heat and insulate or dissipate heat and cool the first mold 1 and the second mold 2.

[0034] Reference Figure 1 , Figure 2 and Figure 4 The first mold 1 has a first cavity 11 on one side facing the second mold 2, and a plurality of first heat-conducting grooves 12 are evenly formed on the side facing away from the first cavity 11; the second mold 2 has a second cavity 21 on one side facing the first mold 1, and a second heat-conducting groove 22 is formed on the side facing away from the second cavity 21. When the first mold 1 and the second mold 2 are assembled, the first cavity 11 and the second cavity 21 are combined to form a cavity.

[0035] Among them, refer to Figure 1 and Figure 2 , a plurality of first heat-conducting blocks 34 are arranged on the side of the first temperature control plate 3 facing the first mold 1, and the plurality of first heat-conducting blocks 34 correspond to and are plug-connected with the plurality of first heat-conducting grooves 12. The width of the first heat-conducting groove 12 is 1 / 15 of the overall width of the first mold 1, and the shortest spacing width between adjacent first heat-conducting grooves 12 is the same as the width of a single first heat-conducting groove 12. The depth of the first heat-conducting grooves 12 not located on the front and back sides of the first cavity 11 is 2 / 3 of the overall thickness of the first mold 1, and the depth of the first heat-conducting grooves 12 located on the front and back sides of the first cavity 11 needs to change with the shape of the first cavity 11. Specifically, the spacing thickness between the bottom of the first heat-conducting groove 12 located on the front and back sides of the first cavity 11 and the cavity wall of the first cavity 11 is 1 / 3 of the overall thickness of the first mold 1. In this embodiment, the overall length of the first mold 1 is 400 mm, the overall width is 300 mm, the thickness is 60 mm, the width of the first heat-conducting groove 12 is 20 mm, the depth of the first heat-conducting groove 12 not located on the front and back sides of the first cavity 11 is 40 mm, and the bottom of the first heat-conducting groove 12 located on the front and back sides of the first cavity 11 is 20 mm away from the cavity wall of the first cavity 11.

[0036] Reference Figure 1 and Figure 2 Similarly, the second temperature control plate 4 is provided with a second heat conducting block 44 corresponding to and plugged with the second heat conducting groove 22, and the width and depth of the second heat conducting groove 22 are the same as those of the first heat conducting groove 12. That is, in this embodiment, the overall length of the second mold 2 is 400 mm, the overall width is 300 mm, the overall thickness is 60 mm, the width of the second heat conducting groove 22 is 20 mm, the depth of the second heat conducting groove 22 not located on the front and back sides of the second cavity 21 is 40 mm, and the groove bottom of the second heat conducting groove 22 located on the front and back sides of the second cavity 21 is 20 mm away from the cavity wall of the second cavity 21.

[0037] By setting a plurality of evenly distributed first heat-conducting grooves 12 and second heat-conducting grooves 22 on the first mold 1 and the second mold 2, and setting matching first heat-conducting blocks 34 and second heat-conducting blocks 44 on the first temperature control plate 3 and the second temperature control plate 4, the contact area between the first mold 1 and the first temperature control plate 3, and between the second mold 2 and the second temperature control plate 4 is greatly increased, which is conducive to improving the thermal conductivity of the first mold 1 and the second mold 2, so that the first temperature control plate 3 and the first mold 1, and the second temperature control plate 4 and the second mold 2 can fully exchange heat, which is conducive to more accurate and uniform temperature control. In addition, by reasonably setting the opening width, interval width and opening depth of the first heat-conducting grooves 12 and the second heat-conducting grooves 22, the first mold 1 and the second mold 2 can retain a certain structural thickness, which is conducive to ensuring the structural strength of the first mold 1 and the second mold 2, and is also conducive to the first mold 1 and the second mold 2 retaining a certain ability to keep heat and maintain pressure while having good thermal conductivity.

[0038] Reference Figure 1 and Figure 2 In order to better insert the first heat conductive block 34 and the second heat conductive block 44 into the first heat conductive groove 12 and the second heat conductive groove 22, the outer wall of the first heat conductive block 34 is provided with a first exhaust groove 341, the outer wall of the second heat conductive block 44 is provided with a second exhaust groove 441, and the edges of the first heat conductive block 34 and the second heat conductive block 44 are both chamfered. The first exhaust groove 341 is used to guide and exhaust the air in the first heat conductive groove 12 when the first heat conductive block 34 is inserted into the first heat conductive groove 12, so that the first heat conductive block 34 can be inserted smoothly. The second exhaust groove 441 is the same.

[0039] Reference Figure 4 In addition, in order to further reduce the friction and heat conduction efficiency between the first heat conductive block 34 and the first heat conductive groove 12, and between the second heat conductive block 44 and the second heat conductive groove 22, the surfaces of the first heat conductive block 34, the second heat conductive block 44, the first heat conductive groove 12 and the second heat conductive groove 22 need to be polished, and the first heat conductive block 34 and the first heat conductive groove 12, and the second heat conductive block 44 and the second heat conductive groove 22 are filled with thermal conductive silicone grease.

[0040] Reference Figure 4 The first cavity 11 includes a first casting cavity 111 and a first core cavity 112, and the second cavity 21 includes a second casting cavity 211 and a second core cavity 212, wherein when the first mold 1 and the second mold 2 are closed to each other, the first casting cavity 111 and the second casting cavity 211 form a casting cavity for molding the casting, and the first core cavity 112 and the second core cavity 212 form a core cavity for placing the core.

[0041] Reference Figure 1 , Figure 2 and Figure 5 A plurality of exhaust holes 23 are evenly arranged at positions of the second mold 2 corresponding to the second core cavity 212, and the exhaust holes 23 vertically penetrate the second mold 2. A plurality of exhaust extension holes 45 are arranged at positions of the second temperature control plate 4 corresponding to the second holes. The exhaust holes 23 on the second mold 2 are interconnected with the exhaust extension holes 45 on the second temperature control plate 4, and are used to exhaust the air in the cavity during casting, so as to prevent the formation of air hole defects inside the casting.

[0042] Reference Figure 5 The second mold 2 is provided with a plurality of overflow grooves 24 on a side surface close to the second casting cavity 211, and the plurality of overflow grooves 24 connect different parts of the second casting cavity 211 with the outer side surface of the second mold 2. Specifically, the overflow grooves 24 have a depth of 1-1.5 mm, and in this embodiment, the overflow grooves 24 have a depth of 1 mm.

[0043] The implementation principle of an anti-heat accumulation gravity casting mold in the embodiment of the present application is: By arranging a plurality of evenly distributed first heat-conducting grooves 12 and second heat-conducting grooves 22 on the back sides of the first mold 1 and the second mold 2, and arranging first heat-conducting blocks 34 and second heat-conducting blocks 44 that are matched and plugged therein on the first temperature control plate 3 and the second temperature control plate 4, the contact area between the first mold 1 and the first temperature control plate 3, and between the second mold 2 and the second temperature control plate 4 is greatly increased, which is not only beneficial to improving the thermal conductivity of the first mold 1 and the second mold 2, so that sufficient heat exchange can be carried out between the first temperature control plate 3 and the first mold 1, and between the second temperature control plate 4 and the second mold 2, but also beneficial to improving the temperature stability and uniformity of the first mold 1 and the second mold 2, and can effectively reduce the problem of local heat accumulation or local overcooling in the cavity, thereby preventing many quality problems such as thermal cracks, shrinkage holes, poor surface molding, etc. of the casting caused by uneven heat distribution of the template.

[0044] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An anti-heat accumulation gravity casting mold, characterized in that: include: A first mold (1), the first mold (1) being provided with a first mold cavity (11), and a plurality of first heat-conducting grooves (12) being evenly provided on a side facing away from the first mold cavity (11); A second mold (2), the second mold (2) being provided with a second mold cavity (21), and a plurality of second heat-conducting grooves (22) being evenly provided on a side facing away from the second mold cavity (21); a first temperature control plate (3), the first temperature control plate (3) being fixedly arranged on a side of the first mould (1) facing away from the first cavity (11), the first temperature control plate (3) being provided with a first heat conducting block (34) corresponding to the first heat conducting groove (12), and the first heat conducting block (34) and the first heat conducting groove (12) being plug-connected to each other; a second temperature control plate (4), the second temperature control plate (4) being fixedly arranged on a side of the second mould (2) facing away from the second cavity (21), the second temperature control plate (4) being provided with a second heat conducting block (44) corresponding to the second heat conducting groove (22), and the second heat conducting block (44) and the second heat conducting groove (22) being plug-connected to each other; Wherein, the first temperature control plate (3) and the second temperature control plate (4) are both externally connected to an independent temperature control system, and the temperature control system is used to control the temperature of the first temperature control plate (3) and the second temperature control plate (4).

2. The anti-heat accumulation gravity casting mold according to claim 1, characterized in that: A first heat-conducting cavity (31) is provided on the inner side of the first temperature-control plate (3), and a first liquid inlet pipe (32) and a first liquid outlet pipe (33) communicating with the first heat-conducting cavity (31) are provided on the outer peripheral side of the first temperature-control plate (3); a second heat-conducting cavity (41) is provided on the inner side of the second temperature-control plate (4), and a second liquid inlet pipe (42) and a second liquid outlet pipe (42) communicating with the second heat-conducting cavity (41) are provided on the second temperature-control plate (4); The first liquid inlet pipe (32), the first liquid outlet pipe (33), the second liquid inlet pipe (42) and the second liquid outlet pipe (43) are all interconnected with the temperature control system, and the temperature control system can circulate and pump heat transfer oil into the first heat transfer cavity (31) and the second heat transfer cavity (41) through the first liquid inlet pipe (32) and the first liquid outlet pipe (33), the second liquid inlet pipe (42) and the second liquid inlet pipe (42), respectively.

3. The anti-heat accumulation gravity casting mold according to claim 1, characterized in that: The opening width of the first heat-conducting groove (12) is 1 / 15 of the overall width of the first mold (1), and the spacing width between adjacent first heat-conducting grooves (12) is the same as the opening width of the first heat-conducting groove (12); The opening width of the second heat-conducting groove (22) is 1 / 15 of the overall width of the second mould (2), and the spacing width between adjacent second heat-conducting grooves (22) is the same as the opening width of the second heat-conducting groove (22).

4. The anti-heat accumulation gravity casting mold according to claim 1, characterized in that: The opening depth of the portion of the first heat-conducting groove (12) not located on the front and back sides of the first cavity (11) is 2 / 3 of the overall thickness of the first mold (1), and the spacing thickness between the bottom of the first heat-conducting groove (12) located on the front and back sides of the first cavity (11) and the cavity wall of the first cavity (11) is 1 / 3 of the overall thickness of the first mold (1); The opening depth of the portion of the second heat-conducting groove (22) not located on the front and back sides of the second cavity (21) is 2 / 3 of the overall thickness of the second mold (2), and the spacing thickness between the bottom of the second heat-conducting groove (22) located on the front and back sides of the second cavity (21) and the cavity wall of the second cavity (21) is 1 / 3 of the overall thickness of the second mold (2).

5. The anti-heat accumulation gravity casting mold according to claim 1, characterized in that: The side wall of the first heat conducting block (34) is provided with a first exhaust groove (341), and the side wall of the second heat conducting block (44) is provided with a second exhaust groove (441).

6. The anti-heat accumulation gravity casting mold according to claim 5, characterized in that: The edges of the first heat conducting block (34) and the second heat conducting block (44) are both rounded.

7. The anti-heat accumulation gravity casting mold according to claim 6, characterized in that: The surfaces of the first heat-conducting groove (12), the first heat-conducting block (34), the second heat-conducting groove (22) and the second heat-conducting block (44) are all polished, and thermally conductive silicone grease is filled between the first heat-conducting block (34) and the first heat-conducting groove (12), and between the second heat-conducting block (44) and the second heat-conducting groove (22).

8. The anti-heat accumulation gravity casting mold according to claim 1, characterized in that: The second mold cavity (21) comprises a second core cavity (212) for placing a mold core; the second mold (2) is provided with a plurality of exhaust through holes (23) at positions corresponding to the second core cavity (212); the exhaust through holes (23) vertically penetrate the second mold (2); the second temperature control plate (4) is provided with a plurality of exhaust extension holes (45) at positions corresponding to the exhaust through holes (23); the exhaust through holes (23) and the exhaust extension holes (45) are in communication with each other.

9. The anti-heat accumulation gravity casting mold according to claim 1, characterized in that: The second cavity (21) comprises a second casting cavity (211) for molding a casting, and an overflow groove (24) is provided on a surface of one side of the second mold (2) close to the second cavity (21), wherein the overflow groove (24) connects the second casting cavity (211) with an outer side surface of the second mold (2).

10. The anti-heat accumulation gravity casting mold according to claim 9, characterized in that: The overflow groove (24) has a depth of 1-1.5 mm.

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