Efficient casting forming die for engine driving motor cooling fins

Abstract

The utility model relates to an engine driving motor cooling fin efficient casting forming mold which comprises an upper mold body and a lower mold body, the upper mold body is provided with a main flow channel, a first flow dividing groove, a plurality of second flow dividing grooves and a plurality of mold cavities, and the lower mold body is provided with a third flow dividing groove, a fourth flow dividing groove, a plurality of mold cores and a plurality of pouring gates. The mold core and the mold cavity jointly form a mold cavity, the first flow dividing groove and the third flow dividing groove jointly form a first sub-runner, the end, close to the main runner, of the first sub-runner is gradually shrunk from the end, away from the main runner, of the first sub-runner, and the second flow dividing groove and the corresponding fourth flow dividing groove jointly form a second sub-runner. The sum of kinetic energy, pressure energy and potential energy of molten metal is kept unchanged in the moving process, the first branch runner is rapidly filled with the molten metal with the increased flow speed in the first branch runner, the process that the molten metal enters the second branch runner is kept synchronous, and therefore the liquid inlet synchronism of the multiple mold cavities in the injection process is improved.

Description

Technical Field

[0001] The utility model relates to the field of casting molds, in particular to a high-efficiency casting molding mold for a heat sink of an engine drive motor. Background Art

[0002] The heat sink is a part used for heat dissipation. The motor easily generates heat during use. The heat sink can effectively dissipate the heat generated by the motor and reduce the possibility of failure.

[0003] Reference Figure 6 The motor heat sink shown is cast by a casting mold. In order to improve the production efficiency of the heat sink 6, the number of mold cavities is usually increased. However, after the mold cavity, the synchronization of the molten metal entering multiple mold cavities during the injection process is poor, which easily causes the quality of the heat sink 6 formed in multiple mold cavities to be different. Utility Model Content

[0004] In order to improve the synchronization of liquid inflow into multiple mold cavities during the injection process, the present application provides an efficient casting mold for an engine drive motor heat sink.

[0005] The present application provides an efficient casting mold for an engine drive motor heat sink, which adopts the following technical solution:

[0006] A high-efficiency casting mold for an engine drive motor heat sink comprises an upper mold and a lower mold, wherein the upper mold is respectively provided with a main channel, a first diverter groove connected to the main channel, a plurality of second diverter grooves and a plurality of cavities, and the lower mold is respectively provided with a third diverter groove, a plurality of fourth diverter grooves connected to the third diverter groove, a plurality of cores and a plurality of groups of gates connected to the corresponding cores, wherein the plurality of cavities respectively correspond to the plurality of cores, the plurality of second diverter grooves and the plurality of fourth diverter grooves, and when the mold is in a mold closing state, the cores and cavities jointly form a mold cavity, the first diverter groove and the third diverter groove jointly form a first diverter channel, the first diverter channel is tapered from one end close to the main channel to the end away from the main channel, and the second diverter groove and the corresponding fourth diverter groove jointly form a second diverter channel.

[0007] By adopting the above technical scheme, during the injection process, the molten metal first flows from the main channel through the first branch channel and then flows through multiple second branch channels before entering the mold cavity, so that the first branch channel is tapered from one end close to the main channel to the end far away from the branch channel, so that during the movement of the molten metal, the sum of its kinetic energy, pressure energy and potential energy remains unchanged, so that the flow rate of the molten metal in the first branch channel is increased to quickly fill the first branch channel, thereby improving the injection efficiency and keeping the process of the molten metal entering the second branch channel synchronous, thereby improving the synchronization of liquid entry into multiple mold cavities during the injection process.

[0008] Preferably, the bottom surface of the first diverter groove is a stepped surface, and the bottom surface of the third diverter groove is a stepped surface.

[0009] By adopting the above technical solution, the flow rate of the molten metal in the first branch channel is increased to quickly fill the first branch channel, thereby improving the injection efficiency and keeping the process of the molten metal entering the second branch channel synchronous, thereby improving the synchronization of liquid inflow into multiple mold cavities during the injection process.

[0010] Preferably, the plurality of second branch flow channels gradually become closer to the main flow channel from one end close to the first branch flow channel to one end far away from the first branch flow channel.

[0011] By adopting the above technical solution, the possibility of molten metal entering the second branch channel when filling the first branch channel during the injection process is reduced, so that the process of molten metal entering the second branch channel is kept synchronous, thereby improving the synchronization of liquid entry into multiple mold cavities during the injection process.

[0012] Preferably, a plurality of cold material holes are opened on the upper mold, and the plurality of cold material holes respectively correspond to a plurality of second diverter grooves, and the plurality of cold material holes are respectively located at an end of the corresponding second diverter groove away from the first diverter groove.

[0013] By adopting the above technical solution, the cold molten metal is prevented from entering the mold cavity, reducing the possibility of causing quality defects in the product, ensuring that the subsequent molten metal flows smoothly into the mold cavity, thereby improving the synchronization of liquid inflow into multiple mold cavities during the injection process, and allowing the molten metal to fill the entire mold cavity, thereby improving the dimensional accuracy and appearance quality of the product.

[0014] Preferably, each of the mold cavities is connected to a plurality of overflow grooves, the plurality of overflow grooves are respectively located on a side of the mold cavity away from the first branch channel, and the plurality of overflow grooves are connected to each other.

[0015] By adopting the above technical solution, the overflow groove can control the filling flow state of the molten metal, prevent local eddy currents, and ensure that the molten metal fills the cavity in an orderly manner, thereby improving the synchronization of liquid inflow into multiple cavities during the injection process.

[0016] Preferably, a plurality of groups of exhaust grooves are provided on the lower mold, the plurality of groups of exhaust grooves correspond to a plurality of mold cavities, each group of exhaust grooves includes a plurality of exhaust grooves, the plurality of exhaust grooves correspond to a plurality of overflow grooves respectively, and the plurality of exhaust grooves are respectively connected to the corresponding overflow grooves.

[0017] By adopting the above technical solution and setting up multiple exhaust grooves, the air and gases generated by the volatilization of the coating can be discharged from the cavity during the injection process, ensuring that the molten metal can smoothly fill every corner of the mold, thereby improving the synchronization of liquid inflow into multiple cavities during the injection process.

[0018] Preferably, the cross section of the exhaust groove in the length direction is arranged in a wave shape.

[0019] By adopting the above technical solution, the cross section of the exhaust groove in the length direction is arranged in a wave shape, which can slow down the jet of air flow and help prevent the possibility of molten metal being ejected from the exhaust groove.

[0020] The technical effects of this utility model are mainly reflected in the following aspects:

[0021] 1. The utility model makes the first branch runner be arranged in a tapered shape from one end close to the main runner to the end far away from the branch runner, so that the sum of the kinetic energy, pressure energy and potential energy of the molten metal remains unchanged during the movement. In the first branch runner, the flow rate of the molten metal increases to quickly fill the first branch runner, thereby improving the injection efficiency and keeping the process of the molten metal entering the second branch runner synchronous, thereby improving the synchronization of liquid inflow into multiple mold cavities during the injection process;

[0022] 2. The utility model makes the second runner gradually closer to the main runner from one end close to the first runner to the end far away from the first runner. This reduces the possibility of the metal liquid entering the second runner when filling the first runner during the injection process, and keeps the process of the metal liquid entering the second runner synchronous, thereby improving the synchronization of liquid inflow into multiple mold cavities during the injection process;

[0023] 3. The utility model provides a plurality of overflow grooves, which can control the filling flow state of the molten metal, prevent local eddy currents, and ensure that the molten metal fills the cavity in an orderly manner, thereby improving the synchronization of liquid inflow into multiple cavities during the injection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of the lower mold structure of an embodiment of the present application.

[0026] Figure 3 is along Figure 1 Enlarged view of point A in the middle.

[0027] Figure 4 It is a schematic diagram of the upper mold structure of an embodiment of the present application.

[0028] Figure 5 is along Figure 3 Enlarged view of point B in the middle.

[0029] Figure 6 It is a schematic diagram of the product structure after die-casting in the embodiment of the present application.

[0030] Figure 7 It is a schematic diagram of the product structure of the embodiment of the present application.

[0031] Explanation of the reference numerals: 1. upper mold; 11. main channel; 12. inlet gate; 2. lower mold; 21. gate; 22. venting groove; 3. mold cavity; 31. core; 32. mold cavity; 33. overflow groove; 4. first branch channel; 41. first branch channel; 42. third branch channel; 5. second branch channel; 51. second branch channel; 511. cold material hole; 52. fourth branch channel; 6. heat sink. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-7 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0033] The embodiment of the present application discloses a high-efficiency casting mold for a heat sink of an engine drive motor.

[0034] Reference Figure 1-Figure 6 , an efficient casting mold for an engine drive motor heat sink of the present embodiment comprises an upper mold 1 and a lower mold 2, the upper mold 1 is respectively provided with an inlet gate 12, a main flow channel 11 connected to the inlet gate 12, a first diverter groove 41 connected to the main flow channel 11, a plurality of second diverter grooves 51 and a plurality of cavities 32 with molding surfaces, the bottom surface of the first diverter groove 41 is a step surface, the lower mold 2 is respectively provided with a third diverter groove 42, a plurality of fourth diverter grooves 52 connected to the third diverter groove 42, a plurality of cores 31 with molding surfaces and a plurality of groups of gates 21 connected to the corresponding cores 31, the bottom surface of the third diverter groove 42 is a step surface, and the plurality of cavities 32 correspond to the plurality of cores 31, the plurality of second diverter grooves 51 and the plurality of fourth diverter grooves 52,

[0035] Reference Figure 1-Figure 6 When the mold is in the mold closing state, the core 31 and the cavity 32 together form the mold cavity 3, the first diverter groove 41 and the third diverter groove 42 together form the first diverter channel 4, the first diverter channel 4 is arranged in a tapered shape from one end close to the main channel 11 to the end away from the main channel 11, and the second diverter groove 51 and the corresponding fourth diverter groove 52 together form the second diverter channel 5.

[0036] Reference Figure 1-Figure 6 During the injection process, after the molten metal is injected from the gate 12, it flows from the main channel 11 through the first branch channel 4 and then through multiple second branch channels 5 before entering the mold cavity 3, so that the first branch channel 4 is gradually narrowed from one end close to the main channel 11 to the end far away from the branch channel, so that the sum of the kinetic energy, pressure energy and potential energy of the molten metal remains unchanged during the movement, so that the flow rate of the molten metal in the first branch channel 4 increases to quickly fill the first branch channel 4, thereby improving the injection efficiency and keeping the process of the molten metal entering the second branch channel 5 synchronous, thereby improving the synchronization of the liquid entering multiple mold cavities 3 during the injection process.

[0037] Reference Figure 1-Figure 6 , multiple second runners 5 are evenly distributed on both sides of the first runner 4 in the width direction, and the multiple second runners 5 are gradually closer to the main channel 11 from one end close to the first runner 4 to the end far away from the first runner 4. The possibility of the molten metal entering the second runner 5 when filling the first runner 4 during the injection process is reduced, so that the process of the molten metal entering the second runner 5 is kept synchronous, thereby improving the synchronization of the liquid entering the multiple mold cavities 3 during the injection process.

[0038] Reference Figure 4 and Figure 5 The upper mold 1 is provided with a plurality of cold material holes 511, which correspond to the plurality of second diverter grooves 51, respectively, and the plurality of cold material holes 511 are respectively located at one end of the corresponding second diverter groove 51 away from the first diverter groove 41. This prevents the cold material of the molten metal from entering the mold cavity 3, reduces the possibility of causing quality defects of the product, ensures that the subsequent molten metal flows smoothly into the mold cavity 3, thereby improving the synchronization of the liquid inflow of the plurality of mold cavities 3 during the injection process, and enables the molten metal to fill the entire mold cavity 3, thereby improving the dimensional accuracy and appearance quality of the product.

[0039] Reference Figure 2-Figure 6 Each mold cavity 3 is connected to a plurality of overflow grooves 33, and the plurality of overflow grooves 33 are respectively located on a side of the corresponding mold cavity 3 away from the first branch channel 4, and the plurality of overflow grooves 33 are connected to each other. The overflow grooves 33 can control the filling flow state of the molten metal, prevent local eddy currents, and ensure that the molten metal fills the mold cavity 32 in an orderly manner, thereby improving the synchronization of the liquid inflow of the plurality of mold cavities 3 during the injection process.

[0040] Reference Figure 2 and Figure 3 , multiple groups of exhaust grooves 22 are provided on the lower mold 2, and the multiple groups of exhaust grooves 22 correspond to multiple mold cavities 3, and each group of exhaust grooves 22 includes multiple exhaust grooves 22, and the multiple exhaust grooves 22 correspond to multiple overflow grooves 33, respectively, and the multiple exhaust grooves 22 are respectively connected with the corresponding overflow grooves 33. By setting multiple exhaust grooves 22, during the injection process, the air and the gas generated by the volatilization of the coating are discharged from the mold cavity 32, ensuring that the molten metal can smoothly fill every corner of the mold, thereby improving the synchronization of the liquid inflow of multiple mold cavities 3 during the injection process. The cross section of the exhaust groove 22 in the length direction is arranged in a wavy shape. The cross section of the exhaust groove 22 in the length direction is arranged in a wavy shape, which can slow down the injection of the air flow and is conducive to preventing the possibility of the molten metal from being ejected from the exhaust groove 22.

[0041] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. An efficient casting mold for an engine drive motor heat sink, characterized in that: The invention comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) is provided with a main flow channel (11), a first flow dividing groove (41) connected to the main flow channel (11), a plurality of second flow dividing grooves (51) and a plurality of cavities (32), and the lower mold (2) is provided with a third flow dividing groove (42), a plurality of fourth flow dividing grooves (52) connected to the third flow dividing groove (42), a plurality of cores (31) and a plurality of gates (21) connected to corresponding cores (31), and the plurality of cavities (32) are respectively connected to the plurality of cores (31). ), a plurality of second diverter grooves (51) and a plurality of fourth diverter grooves (52) corresponding to each other; when the mold is in a mold closing state, the core (31) and the cavity (32) together form a mold cavity (3); the first diverter groove (41) and the third diverter groove (42) together form a first diverter channel (4); the first diverter channel (4) is arranged in a tapered shape from one end close to the main channel (11) to the end away from the main channel (11); the second diverter groove (51) and the corresponding fourth diverter groove (52) together form a second diverter channel (5).

2. The high-efficiency casting mold for the heat sink of an engine drive motor according to claim 1, characterized in that: The bottom surface of the first diverter groove (41) is a stepped surface, and the bottom surface of the third diverter groove (42) is a stepped surface.

3. The high-efficiency casting mold for the heat sink of an engine drive motor according to claim 1, characterized in that: The plurality of second flow channels (5) gradually become closer to the main flow channel (11) from one end close to the first flow channel (4) to one end far away from the first flow channel (4).

4. The high-efficiency casting mold for the heat sink of an engine drive motor according to claim 3, characterized in that: The upper mold (1) is provided with a plurality of cold material holes (511), the plurality of cold material holes (511) respectively correspond to a plurality of second diverter grooves (51), and the plurality of cold material holes (511) are respectively located at one end of the corresponding second diverter groove (51) away from the first diverter groove (41).

5. The high-efficiency casting mold for the heat sink of an engine drive motor according to claim 1, characterized in that: Each of the mold cavities (3) is respectively connected to a plurality of overflow grooves (33); the plurality of overflow grooves (33) are respectively located on a side of the mold cavity (3) away from the first branch channel (4); and the plurality of overflow grooves (33) are interconnected.

6. The high-efficiency casting mold for the heat sink of an engine drive motor according to claim 5, characterized in that: The lower mold (2) is provided with a plurality of groups of exhaust grooves (22), the plurality of groups of exhaust grooves (22) correspond to a plurality of mold cavities (3), each group of exhaust grooves (22) includes a plurality of exhaust grooves (22), the plurality of exhaust grooves (22) respectively correspond to a plurality of overflow grooves (33), and the plurality of exhaust grooves (22) are respectively connected to the corresponding overflow grooves (33).

7. The high-efficiency casting mold for the heat sink of an engine drive motor according to claim 6, characterized in that: The cross section of the exhaust groove (22) in the length direction is arranged in a wave shape.

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