New energy automobile PTC aluminum shell die-casting mechanism

Abstract

The invention is suitable for the technical field of PTC aluminum shell die-casting, and discloses a new energy automobile PTC aluminum shell die-casting mechanism which comprises a fixed die frame, a movable die frame is arranged on one side of the fixed die frame, a fixed die core assembly is arranged in the fixed die frame, and a movable die core assembly is arranged on the side, close to the movable die frame, of the fixed die core assembly. Insert assemblies are arranged on the periphery of the movable mold core assembly, and a product integral part is arranged between the fixed mold core assembly and the movable mold core assembly; the fixed mold core assembly comprises a fixed mold core shell part, a fixed mold core forming plate is arranged in the center of the fixed mold core shell part, a fixed mold pouring gate opening is formed in one side of the fixed mold core shell part, fixed mold exhaust plates are arranged on the two sides of the fixed mold core shell part respectively, and fixed mold exhaust grooves are formed in one sides of the fixed mold exhaust plates. The device solves the problems of air trapping in an island and air entrapment of a product caused by the fact that air in a deep cavity position cannot be exhausted, and achieves the functions of reducing wall collision vortex and improving the quality of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of PTC aluminum housing die-casting, and more specifically, to a PTC aluminum housing die-casting mechanism for a new energy vehicle. Background Art

[0002] PTC aluminum housing die casting is a precision casting process, usually used to produce aluminum alloy parts with complex shapes and thin walls. New energy PTC housing products have high requirements for air tightness, complex product structures, and many independent cavities with large surface differences. Die casting is prone to air entrapment.

[0003] At present, the PTC aluminum housing die-casting on the market mainly ensures smooth flow of molten metal and reduces eddy current and gas entrapment by designing a reasonable pouring system. Alternatively, the problem of trapped gas can be optimized by improving the rationality of the exhaust system design of the mold, such as whether the exhaust slot is correctly located, whether the size is appropriate, and whether the gas can be discharged smoothly.

[0004] However, these methods require redesigning the die-casting mold, which takes a long time and has high design costs. After the design is completed, the mold needs to be reopened before it can be put into production, and the original mold can only be scrapped, which has a great impact on the factory's production and cost control. At the same time, during die-casting, the position where the through hole is formed on the mold for the product, the molten aluminum will hit the wall when it flows in, forming an eddy current. This eddy current will make the exhaust of the molten aluminum not smooth when it flows in, affecting the quality of the product.

[0005] Therefore, a die-casting mechanism for a PTC aluminum shell of a new energy vehicle is proposed, which can solve the problem of trapped gas in isolated islands, solve the problem of gas being unable to be discharged in deep cavities, solve the risk of gas entrainment in products, reduce wall-impacting vortices, improve product quality, and reduce design costs and time. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a new energy vehicle PTC aluminum shell die-casting structure that can solve the problem of isolated island gas trapping, solve the problem of gas being unable to be discharged in deep cavities, solve the risk of product air entrainment, reduce wall-impacting vortices, improve product quality, and reduce design costs and time.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A die-casting mechanism for a PTC aluminum shell of a new energy vehicle comprises a fixed die frame, a movable die frame is arranged on one side of the fixed die frame, a fixed die core assembly is arranged inside the fixed die frame, a movable die core assembly is arranged on the side of the fixed die core assembly close to the movable die frame, an insert assembly is arranged around the movable die core assembly, and a product integral part is arranged between the fixed die core assembly and the movable die core assembly; the fixed die core assembly comprises a fixed die core shell part, a fixed die core forming plate is arranged at the center of the fixed die core shell part, a fixed die runner is arranged on one side of the fixed die core shell part, fixed die exhaust plates are arranged on both sides of the fixed die core shell part, a fixed die exhaust groove is opened on one side of the fixed die exhaust plate, and the fixed die exhaust plate is away from the fixed die core shell part A fixed mold exhaust hole is opened on one side, an exhaust groove channel hole is opened on the side of the fixed mold core shell near the fixed mold exhaust groove, and a fixed mold runner is opened on the side of the fixed mold core shell near the fixed mold core forming plate; the overall product part includes a product runner mouth, a product runner is arranged on one side of the product runner mouth, a product molding is arranged on the side of the product runner away from the product runner mouth, a through hole groove is opened on the side of the product molding away from the product runner, a molding bridge is arranged in the center of the through hole groove, a first through hole is opened on one side of the product molding, a second through hole is opened on the side of the product molding away from the first through hole, exhaust blocks are respectively arranged on both sides of the product molding, and a plurality of guide blocks are arranged around the product molding.

[0009] The present invention is further configured as follows: the outer side of the fixed mold core shell portion is adapted to the shape of the inner wall of the fixed mold frame, the shape of the fixed mold core forming plate is adapted to the shape of one side of the product forming, and the fixed mold runner is configured as a hollow cylindrical structure.

[0010] The present invention is further configured as follows: one side of the fixed mold runner port is connected to the fixed mold runner, two groups of the fixed mold exhaust plates are symmetrically arranged along the center of the fixed mold core shell, and the fixed mold exhaust groove is adapted in shape to one side of the exhaust block.

[0011] The present invention is further configured as follows: the fixed mold exhaust hole is opened as a circular structure, the exhaust groove channel hole is opened as a circular structure, and the exhaust groove channel hole has a diameter smaller than the fixed mold exhaust hole.

[0012] The present invention is further configured as follows: the fixed mold core shell portion includes a first bridging groove, the first bridging groove is opened close to one side of the fixed mold core forming plate, a second bridging groove is opened on one side of the first bridging groove, and the opening depth of the second bridging groove is consistent with that of the first bridging groove.

[0013] By adopting the above technical solution, when the PTC aluminum shell is die-cast, the molten aluminum liquid flows from the fixed mold runner mouth into the fixed mold runner, and the aluminum liquid flows from the fixed mold runner into the outer shell of the fixed mold core and the outer side of the fixed mold core forming plate. The aluminum liquid fills in the direction of the fixed mold exhaust plate, and the gas inside the die-casting device extracts air through the fixed mold exhaust hole position. The air is extracted from the position where the fixed mold core outer shell and the fixed mold exhaust groove are connected. The aluminum liquid will flow to the fixed mold exhaust groove with the extracted air until the fixed mold exhaust groove, the fixed mold exhaust hole, and the exhaust groove channel hole are filled. Vacuuming the inside of the mold can effectively reduce the problems of trapped air and unsmooth exhaust during die casting, ensure smooth filling of aluminum liquid, reduce the time of aluminum liquid filling, and improve filling efficiency. The first bridge groove and the second bridge groove can close one side of the first through hole and the second through hole. The shape formed by the first bridge groove and the second bridge groove position can be removed in subsequent processing without changing the product appearance and machining cost. When the PTC aluminum housing is die-cast, the aluminum liquid flows into the first bridge groove and the second bridge groove, so that the aluminum liquid is filled smoothly to avoid turbulent exhaust and thus better exhaust.

[0014] The present invention is further configured as follows: the movable mold core assembly includes a movable mold core forming plate portion, a runner insert is provided on one side of the movable mold core forming plate portion, a first insert is provided on one side of the runner insert, a bottom plate insert portion is provided on one side of the first insert, and a second insert is provided on the side of the movable mold core forming plate portion away from the first insert.

[0015] The present invention is further configured as follows: the movable mold core forming plate portion includes a movable mold core forming plate shell, the movable mold core forming plate shell is configured as a raised structure, an island groove is provided on one side of the movable mold core forming plate shell, the island groove is provided as a circular structure with a center and rectangular structures on both sides, and a plurality of guide grooves are provided around the movable mold core forming plate shell; the bottom plate inlay portion includes a bottom plate inlay shell, a first through hole block is provided on one side of the bottom plate inlay shell, a bridging groove is provided in the center of the first through hole block, a second through hole block is provided on one side of the bottom plate inlay shell, and a third through hole block is provided on the side of the bottom plate inlay shell away from the second through hole block.

[0016] By adopting the above technical solution, the other side of the product as a whole is provided with a shape by the movable mold core forming plate, and the oil cylinder pushes the runner push block, the first push block, the bottom plate push block, and the second push block, so that the runner insert matched with the runner push block, the first insert matched with the first push block, the bottom plate insert part matched with the bottom plate push block, and the second insert matched with the second push block are all pushed toward the center to form the required shape. When die casting is required, the runner insert forms a shape that presses the fixed mold runner mouth, reduces the excessive accumulation of aluminum liquid at the runner mouth, and reduces production costs. During die casting, the rectangular structure on both sides of the island groove can achieve the effect of not affecting the flow resistance of water and improving the island forming efficiency at the same time. The guide groove is provided with an outwardly protruding structure. When filling the aluminum liquid, the aluminum liquid first fills the side wall guide groove position, and then pushes forward for filling, so that the products can be filled sequentially to avoid air entrainment.

[0017] The present invention is further configured as follows: the outer shell of the movable mold core forming plate is adapted to the shape of one side of the product forming, the island groove is adapted to the shape of the bottom end of the product forming, the guide groove is adapted to the shape of the guide block, the first through hole block is adapted to the shape of the through hole groove, the bridge groove is adapted to the shape of the formed bridge, the second through hole block is adapted to the shape of the first through hole, and the third through hole block is adapted to the shape of the second through hole.

[0018] By adopting the above technical solution, the first through-hole block provided on the bottom plate insert shell provides the shape for the through-hole groove, the first through-hole block is a connecting through-hole, and the second through-hole block and the third through-hole block provide the through-hole shape for the first through-hole and the second through-hole, which is convenient for die-casting and convenient for later trimming of the bridge formed by the first bridge groove and the second bridge groove on the whole part of the product to form the final required through-hole structure. When the aluminum liquid flows in, the temperature around the first through-hole block is relatively low, and the aluminum liquid is easy to solidify, generating a wall-colliding eddy current phenomenon. The aluminum liquid on both sides is interconnected through the bridge groove, reducing the aluminum liquid from hitting the wall to form an eddy current, improving the product molding quality, and improving the product production efficiency.

[0019] The present invention is further configured as follows: the insert assembly includes four groups of oil cylinders arranged around the movable mold core assembly, each group of the oil cylinders is provided with a mounting plate on the side close to the movable mold core assembly, each group of the mounting plates is provided with two groups of fixed guide plates on the side close to the movable mold core assembly, one group of the oil cylinder output ends is fixedly connected to a runner push block, one group of the oil cylinder output ends is fixedly connected to a first push block, one group of the oil cylinder output ends is fixedly connected to a bottom plate push block, one group of the oil cylinder output ends is fixedly connected to a second push block, one side of the runner push block and the bottom plate push block is respectively provided with a group of exhaust plates, the two groups of exhaust plates are symmetrical along the center of the movable mold core assembly, and one side of the runner push block, the first push block, the bottom plate push block and the second push block are respectively slidably connected to two groups of guide strips.

[0020] The present invention is further configured as follows: the oil cylinder is fixedly connected to the mounting plate, the mounting plate is fixedly connected to two groups of fixed guide plates, the fixed guide plate is fixedly connected to the movable mold frame, the runner push block is adapted in shape to the runner insert, the first push block is adapted in shape to the first insert, the bottom plate push block is adapted in shape to the bottom plate insert portion, the second push block is adapted in shape to the second insert, the exhaust plate is adapted in shape to the other side of the exhaust block, and the runner push block, the first push block, the bottom plate push block, the second push block are slidably connected to the fixed guide plate.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. When the PTC aluminum shell is die-cast, the molten aluminum flows into the fixed mold runner from the fixed mold runner, and the aluminum flows into the fixed mold core shell and the outside of the fixed mold core forming plate from the fixed mold runner. The aluminum liquid fills in the direction of the fixed mold exhaust plate, and the gas inside the die-casting device extracts air through the fixed mold exhaust hole position. The air is extracted from the position where the fixed mold core shell and the fixed mold exhaust groove are connected. The aluminum liquid will flow to the fixed mold exhaust groove with the extracted air until the fixed mold exhaust groove, the fixed mold exhaust hole, and the exhaust groove channel hole are filled. Vacuuming the inside of the mold can effectively reduce the problems of trapped air and poor exhaust during die casting, ensure smooth filling of aluminum liquid, reduce the time of aluminum liquid filling, and improve filling efficiency. The first bridge groove and the second bridge groove can close one side of the first through hole and the second through hole. The shape formed by the first bridge groove and the second bridge groove position can be removed in subsequent processing without changing the product appearance and machining cost. When the PTC aluminum housing is die-cast, the aluminum liquid flows into the first bridge groove and the second bridge groove, so that the aluminum liquid is filled smoothly to avoid turbulent exhaust and thus better exhaust.

[0023] 2. The other side of the product is shaped by the moving mold core forming plate. The oil cylinder pushes the runner push block, the first push block, the bottom plate push block, and the second push block, so that the runner insert matched with the runner push block, the first insert matched with the first push block, the bottom plate insert matched with the bottom plate push block, and the second insert matched with the second push block are all pushed toward the center to form the required shape. When die casting is required, the runner insert forms a shape that presses the fixed mold runner mouth, reducing the excessive accumulation of aluminum liquid at the runner mouth and reducing production costs. During die casting, the rectangular structure on both sides of the island groove can achieve the effect of not affecting the flow resistance of water and improving the island forming efficiency at the same time. The guide groove is provided with an outward protruding structure. When filling the aluminum liquid, the aluminum liquid first fills the side wall guide groove position, and then pushes forward for filling, so that the products can be filled sequentially to avoid air entrainment.

[0024] 3. The first through-hole block provided on the bottom plate insert shell provides the shape for the through-hole groove. The first through-hole block is a connecting through-hole. The second through-hole block and the third through-hole block provide the through-hole shape for the first through-hole and the second through-hole, which is convenient for die-casting and convenient for later trimming of the bridge formed by the first bridge groove and the second bridge groove on the whole part of the product to form the final required through-hole structure. When the aluminum liquid flows in, the temperature around the first through-hole block is low, and the aluminum liquid is easy to solidify, generating a vortex phenomenon of hitting the wall. The aluminum liquid on both sides is interconnected through the bridge groove, reducing the aluminum liquid hitting the wall to form vortices, improving the product molding quality, and improving the product production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the die-casting mechanism of the PTC aluminum housing of a new energy vehicle of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the fixed mold frame and the fixed mold core assembly in the present invention;

[0027] Figure 3 It is a structural schematic diagram of the fixed mold core assembly in the present invention;

[0028] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0029] Figure 5 It is a structural schematic diagram of the movable mold frame, movable mold core assembly, and insert assembly in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the movable mold core assembly in the present invention;

[0031] Figure 7 for Figure 6 A partial enlarged view of the middle B area;

[0032] Figure 8 It is a structural schematic diagram of the movable mold core forming plate portion of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the insert assembly in the present invention;

[0034] Fig.10 It is a structural schematic diagram of the insert assembly in the present invention from another perspective;

[0035] Fig.11 It is a structural schematic diagram of the entire product of the present invention;

[0036] Description of reference numerals: 1. fixed mold frame;

[0037] 2. Moving mold frame;

[0038] 3. Fixed mold core assembly; 31. Fixed mold core shell; 311. First bridge groove; 312. Second bridge groove; 32. Fixed mold core forming plate; 33. Fixed mold runner; 34. Fixed mold exhaust plate; 35. Fixed mold exhaust groove; 36. Fixed mold exhaust hole; 37. Exhaust groove channel hole; 38. Fixed mold runner;

[0039] 4. Moving mold core assembly; 41. Moving mold core forming plate portion; 411. Moving mold core forming plate shell; 412. Island groove; 413. Guide groove; 42. Runner insert; 43. First insert; 44. Bottom plate insert portion; 441. Bottom plate insert shell; 442. First through hole block; 443. Bridge groove; 444. Second through hole block; 445. Third through hole block; 45. Second insert;

[0040] 5. Insert assembly; 51. Oil cylinder; 52. Mounting plate; 53. Runner push block; 54. First push block; 55. Bottom plate push block; 56. Second push block; 57. Exhaust plate; 58. Guide strip; 59. Fixed guide plate;

[0041] 6. Overall part of the product; 61. Product runner; 62. Product runner; 63. Product molding; 64. Through hole groove; 65. Molding bridge; 66. First through hole; 67. Second through hole; 68. Exhaust block; 69. Guide block. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0044] See also Figure 1-11 , the present invention provides the following technical solutions:

[0045] Embodiment 1

[0046] A new energy vehicle PTC aluminum housing die-casting mechanism, see Figure 1-11 , including a fixed mold frame 1, a fixed mold core component 3 is arranged inside the fixed mold frame 1, a movable mold core component 4 is arranged on the side of the fixed mold core component 3 close to the movable mold frame 2, and an insert component 5 is arranged around the movable mold core component 4. A product overall part 6 is arranged between the fixed mold core component 3 and the movable mold core component 4, and a die-casting shape is provided for the product overall part 6 on one side through the movable mold core component 4, and the insert component 5 cooperates with the movable mold core component 4 to form the required shape for die-casting. The specific structure of the product overall part 6 is as follows:

[0047] See also Fig.11The overall product part 6 includes a product runner gate 61, a product runner 62 is arranged on one side of the product runner gate 61, a product molding 63 is arranged on the side of the product runner 62 away from the product runner gate 61, a through hole groove 64 is opened on the side of the product molding 63 away from the product runner 62, a molding bridge 65 is arranged at the center of the through hole groove 64, a first through hole 66 is opened on one side of the product molding 63, a second through hole 67 is opened on the side of the product molding 63 away from the first through hole 66, exhaust blocks 68 are respectively arranged on both sides of the product molding 63, and a plurality of groups of guide blocks 69 are arranged around the product molding 63.

[0048] The specific structure of the movable mold core component 4 is as follows:

[0049] See also Figure 6 The movable mold core assembly 4 includes a movable mold core forming plate portion 41, a runner insert 42 is provided on one side of the movable mold core forming plate portion 41, a first insert 43 is provided on one side of the runner insert 42, a bottom plate insert portion 44 is provided on one side of the first insert 43, and a second insert 45 is provided on the side of the movable mold core forming plate portion 41 away from the first insert 43.

[0050] The specific structure of the insert component 5 is as follows:

[0051] See also Figure 9-10 The insert assembly 5 includes four groups of oil cylinders 51 arranged around the movable mold core assembly 4, each group of oil cylinders 51 is provided with a mounting plate 52 on the side close to the movable mold core assembly 4, and each group of mounting plates 52 is provided with two groups of fixed guide plates 59 on the side close to the movable mold core assembly 4, one group of oil cylinders 51 is fixedly connected to a runner push block 53 at the output end, one group of oil cylinders 51 is fixedly connected to a first push block 54 at the output end, one group of oil cylinders 51 is fixedly connected to a bottom plate push block 55 at the output end, and one group of oil cylinders 51 is fixedly connected to a second push block 56 at the output end, and one side of the runner push block 53 and the bottom plate push block 55 is respectively provided with a group of exhaust plates 57, and the two groups of exhaust plates 57 are symmetrical along the center of the movable mold core assembly 4, and one side of the runner push block 53, the first push block 54, the bottom plate push block 55, and the second push block 56 are respectively slidably connected to two groups of guide strips 58. The oil cylinder 51 is fixedly connected to the mounting plate 52, the mounting plate 52 is fixedly connected to two sets of fixed guide plates 59, the fixed guide plates 59 are fixedly connected to the movable mold frame 2, the runner push block 53 is adapted in shape to the runner insert 42, the first push block 54 is adapted in shape to the first insert 43, the bottom plate push block 55 is adapted in shape to the bottom plate insert portion 44, the second push block 56 is adapted in shape to the second insert 45, the exhaust plate 57 is adapted in shape to the other side of the exhaust block 68, and the runner push block 53, the first push block 54, the bottom plate push block 55, the second push block 56 are slidably connected to the fixed guide plate 59.

[0052] Specifically, the output end of the oil cylinder 51 is driven to move by inputting hydraulic oil. The oil cylinder 51 is fixed on the mounting plate 52 and the guide bar 58. The guide bar 58 is fixed on the movable mold core assembly 4. The output ends of the four groups of oil cylinders 51 move to drive the corresponding runner push blocks 53, the first push blocks 54, the bottom plate push blocks 55, and the second push blocks 56 to move toward the center. The guide bar 58 and the fixed guide plate 59 limit the moving direction of the load carried by the output end of each group of oil cylinders 51, that is, the moving direction of the runner push blocks 53, the first push blocks 54, the bottom plate push blocks 55, and the second push blocks 56. The runner push block 53 moves to drive the runner insert 42, the first push block 54 moves to drive the first insert 43, the bottom plate push block 55 moves to drive the bottom plate insert part 44, and the second push block 56 moves to drive the second insert 45, so that the runner insert 42, the first insert 43, the bottom plate insert part 44, and the second insert 45 move toward the center to form the shape of one side of the integral part 6 of the product required for die casting.

[0053] Embodiment 2: During die-casting of the existing PTC aluminum housing die-casting mechanism, many through holes are present on the PTC aluminum housing, which will affect the filling flow direction, causing the filled aluminum liquid to generate wall-impacting vortices and turbulence, resulting in poor exhaust.

[0054] See also Figure 3 For this purpose, a fixed mold core component 3 is provided inside the fixed mold frame 1. The fixed mold core component 3 provides the shape of one side for the PTC aluminum shell product. At the same time, it provides an environment for exhausting the internal space during die casting to reduce the problem of trapped air. The specific structure of the fixed mold core component 3 is as follows:

[0055] See also Figure 3The fixed mold core assembly 3 includes a fixed mold core shell 31, a fixed mold core forming plate 32 is arranged at the center of the fixed mold core shell 31, a fixed mold runner 33 is arranged on one side of the fixed mold core shell 31, and fixed mold exhaust plates 34 are arranged on both sides of the fixed mold core shell 31, a fixed mold exhaust groove 35 is opened on one side of the fixed mold exhaust plate 34, a fixed mold exhaust hole 36 is opened on the side of the fixed mold exhaust plate 34 away from the fixed mold core shell 31, an exhaust groove channel hole 37 is opened on the side of the fixed mold core shell 31 close to the fixed mold exhaust groove 35, and a fixed mold runner 38 is opened on the side of the fixed mold core shell 31 close to the fixed mold core forming plate 32. The outer side of the fixed mold core shell 31 is adapted to the shape of the inner wall of the fixed mold frame 1, the shape of the fixed mold core forming plate 32 is adapted to the shape of the product molding 63 side, and the fixed mold runner 33 is set to a hollow cylindrical structure. One side of the fixed mold runner 33 is connected to the fixed mold runner 38, and two sets of fixed mold exhaust plates 34 are symmetrically arranged along the center of the fixed mold core shell 31, and the fixed mold exhaust groove 35 is adapted to the shape of one side of the exhaust block 68. The fixed mold exhaust hole 36 is provided as a circular structure, and the exhaust groove channel hole 37 is provided as a circular structure, and the diameter of the exhaust groove channel hole 37 is smaller than that of the fixed mold exhaust hole 36. The fixed mold core shell 31 is installed inside the fixed mold frame 1, and the fixed mold core shell 31 provides a partial shape for the product overall part 6, and provides a shape of one side for the product overall part 6 through the fixed mold core forming plate 32, and the shape of the fixed mold core forming plate 32 is consistent with the shape of the PTC element. When the PTC aluminum shell is die-cast, the molten aluminum flows from the fixed mold runner 33 into the fixed mold runner 38. The connection between the fixed mold runner 38 and the fixed mold core forming plate 32 is changed to an inward structure, which can effectively improve the fluidity of the aluminum liquid. The aluminum liquid flows from the fixed mold runner 38 into the fixed mold core outer shell 31 and the outside of the fixed mold core forming plate 32. The aluminum liquid fills in the direction of the fixed mold exhaust plate 34. The gas inside the die-casting device is extracted from the fixed mold exhaust hole 36. The air is extracted from the position where the fixed mold core outer shell 31 is connected to the fixed mold exhaust groove 35. The aluminum liquid will flow to the fixed mold exhaust groove 35 as the air is extracted until the fixed mold exhaust groove 35, the fixed mold exhaust hole 36, and the exhaust groove channel hole 37 are filled. Vacuuming the inside of the mold can effectively reduce the problems of trapped air and unsmooth exhaust during die casting, ensure smooth filling of aluminum liquid, reduce the time of aluminum liquid filling, and improve filling efficiency.

[0056] The specific structure of the fixed mold shell 31 is as follows:

[0057] See also Figure 4The fixed mold core shell 31 includes a first bridge groove 311, which is opened near one side of the fixed mold core forming plate 32. A second bridge groove 312 is opened on one side of the first bridge groove 311, and the depth of the second bridge groove 312 is consistent with that of the first bridge groove 311. There are two through holes, the first through hole 66 and the second through hole 67, at the positions corresponding to the first bridge groove 311 and the second bridge groove 312. The first bridge groove 311 and the second bridge groove 312 can close one side of the first through hole 66 and the second through hole 67. The shape formed at the positions of the first bridge groove 311 and the second bridge groove 312 can be removed in subsequent processing without changing the product appearance and machining cost. When the PTC aluminum shell is die-cast, when the aluminum liquid flows into the first bridge groove 311 and the second bridge groove 312, the aluminum liquid is filled smoothly to avoid turbulent exhaust and better exhaust.

[0058] Specifically, when the PTC aluminum shell is die-cast, the molten aluminum flows from the fixed mold runner 33 into the fixed mold runner 38, and the aluminum flows from the fixed mold runner 38 into the outer side of the fixed mold core shell 31 and the fixed mold core forming plate 32, and the aluminum liquid fills in the direction of the fixed mold exhaust plate 34, and the gas inside the die-casting device is extracted from the position of the fixed mold exhaust hole 36, and the air is extracted from the position where the fixed mold core shell 31 is connected to the fixed mold exhaust groove 35. The aluminum liquid will flow to the fixed mold exhaust groove 35 as the air is extracted until the fixed mold exhaust groove 35, the fixed mold exhaust hole 36, and the exhaust groove channel hole 37 are filled. Vacuuming the inside of the mold can effectively reduce the problems of trapped air and poor exhaust during die casting, ensure smooth filling of aluminum liquid, reduce the time of aluminum liquid filling, and improve filling efficiency. The first bridge groove 311 and the second bridge groove 312 can close one side of the first through hole 66 and the second through hole 67. The shape formed by the first bridge groove 311 and the second bridge groove 312 can be removed in subsequent processing without changing the product appearance and machining cost. When the PTC aluminum housing is die-cast, when the aluminum liquid flows into the first bridge groove 311 and the second bridge groove 312, the aluminum liquid is filled smoothly to avoid turbulent exhaust and better exhaust.

[0059] Embodiment 3: During die-casting of the existing PTC aluminum housing die-casting mechanism, many isolated islands are formed on the PTC aluminum housing. The existence of these isolated islands will affect the filling flow direction, resulting in an irregular filling flow direction and easily causing air to be trapped at the isolated island positions.

[0060] See also Figure 6 For this purpose, a movable mold core component 4 is provided on one side of the fixed mold core component 3 close to the movable mold frame 2. The movable mold core component 4 provides a shape for the other side of the PTC aluminum shell. At the same time, the movable mold core component 4 cooperates with the insert component 5 to realize the functions of die casting and demoulding, and through sequential filling, the generation of air entrainment is avoided, the exhaust efficiency is improved, and the production speed is increased. The specific structure of the movable mold core component 4 is as follows:

[0061] See also Figure 6 The movable mold core assembly 4 includes a movable mold core forming plate portion 41, a runner insert 42 is provided on one side of the movable mold core forming plate portion 41, a first insert 43 is provided on one side of the runner insert 42, a bottom plate insert portion 44 is provided on one side of the first insert 43, and a second insert 45 is provided on the side of the movable mold core forming plate portion 41 away from the first insert 43. The movable mold core forming plate portion 41 is used to provide shape for the other side of the product as a whole portion 6, and the cylinder 51 pushes the runner push block 53, the first push block 54, the bottom plate push block 55, and the second push block 56, so that the runner insert 42 matched with the runner push block 53, the first insert 43 matched with the first push block 54, the bottom plate insert portion 44 matched with the bottom plate push block 55, and the second insert 45 matched with the second push block 56 are all pushed toward the center to form the required shape. When die casting is required, the runner insert 42 is formed to press the fixed mold runner gate 33, thereby reducing excessive accumulation of aluminum liquid at the runner gate and reducing production costs.

[0062] The specific structure of the movable mold core forming plate portion 41 is as follows:

[0063] See also Figure 8 The movable mold core forming plate portion 41 includes a movable mold core forming plate shell 411, and the movable mold core forming plate shell 411 is set as a convex structure. An island groove 412 is provided on one side of the movable mold core forming plate shell 411. The island groove 412 is provided with a circular structure in the center and rectangular structures on both sides. A plurality of guide grooves 413 are provided around the movable mold core forming plate shell 411. The movable mold core forming plate shell 411 is adapted to the shape of one side of the product forming 63, the island groove 412 is adapted to the shape of the bottom end of the product forming 63, and the guide groove 413 is adapted to the shape of the guide block 69. The PTC aluminum shell heats the liquid through the PTC element to realize the heating function. Therefore, it is necessary to adjust the island without affecting the flow resistance of the water. During die casting, through the rectangular structure on both sides of the island groove 412, it can be achieved that the flow resistance of the water is not affected and the island forming efficiency is improved at the same time. When the aluminum liquid flows, it enters along the two sides of the rectangle. The aluminum liquid on both sides solidifies first, and the aluminum liquid that continues to enter can continue to fill the inside along the solidified aluminum, which is convenient for the formation of the island groove 412. The aluminum liquid feeds faster along the side wall of the product and quickly fills to the end, blocking the exhaust system of the product, resulting in the exhaust being blocked before the product is filled. The guide groove 413 is provided with an outwardly protruding structure. When the aluminum liquid is filled, the aluminum liquid first fills the side wall guide groove 413 position, and then pushes forward for filling, so that the products can be filled sequentially to avoid air entrainment.

[0064] Specifically, the other side of the product integral part 6 is provided with a shape by the movable mold core forming plate part 41, and the oil cylinder 51 pushes the runner push block 53, the first push block 54, the bottom plate push block 55, and the second push block 56, so that the runner insert 42 matched with the runner push block 53, the first insert 43 matched with the first push block 54, the bottom plate insert part 44 matched with the bottom plate push block 55, and the second insert 45 matched with the second push block 56 are all pushed toward the center to form the required shape. When die casting is required, the runner insert 42 forms a shape that presses the fixed mold runner gate 33, reduces the excessive accumulation of aluminum liquid at the runner gate, and reduces production costs. During die casting, through the rectangular structure on both sides of the island groove 412, it can be achieved that the flow resistance of water is not affected and the island forming efficiency is improved at the same time. The guide groove 413 is provided with an outwardly protruding structure. When the aluminum liquid is filled, the aluminum liquid first fills the side wall guide groove 413 position and then pushes forward for filling. This allows the products to be filled sequentially to avoid air entrapment.

[0065] Embodiment 4: On the other hand, when filling the through holes at the connection of the PTC aluminum shell, it will affect the filling flow direction, causing the filled aluminum liquid to generate wall-impacting vortices and turbulence, resulting in the problem of poor exhaust.

[0066] See also Figure 7 A runner insert 42 is provided on one side of the movable mold core forming plate 41, a first insert 43 is provided on one side of the runner insert 42, and a bottom plate insert 44 is provided on one side of the first insert 43. The bottom plate insert 44 bridges the aluminum liquid on both sides to reduce the aluminum liquid hitting the wall to form eddy currents, improve the product molding quality, and improve the product production efficiency. The specific structure of the bottom plate insert 44 is as follows:

[0067] See also Figure 7The bottom plate insert part 44 includes a bottom plate insert housing 441, a first through hole block 442 is provided on one side of the bottom plate insert housing 441, a bridge groove 443 is provided at the center of the first through hole block 442, a second through hole block 444 is provided on one side of the bottom plate insert housing 441, and a third through hole block 445 is provided on the side of the bottom plate insert housing 441 away from the second through hole block 444. The first through hole block 442 is adapted to the shape of the through hole groove 64, the bridge groove 443 is adapted to the shape of the formed bridge 65, the second through hole block 444 is adapted to the shape of the first through hole 66, and the third through hole block 445 is adapted to the shape of the second through hole 67. The first through-hole block 442 provided on the bottom plate insert shell 441 provides a shape for the through-hole groove 64. The first through-hole block 442 is a connecting through-hole. The second through-hole block 444 and the third through-hole block 445 provide through-hole shapes for the first through-hole 66 and the second through-hole 67, which is convenient for die-casting and convenient for later trimming of the bridge formed by the first bridge groove 311 and the second bridge groove 312 on the product integral part 6 to form the final required through-hole structure. When the aluminum liquid flows in, the temperature around the first through-hole block 442 is relatively low, and the aluminum liquid is easy to solidify, generating a wall-colliding eddy current phenomenon. The aluminum liquid on both sides is interconnected through the bridge groove 443, reducing the aluminum liquid from hitting the wall to form an eddy current, improving the product molding quality, and improving the product production efficiency.

[0068] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A new energy vehicle PTC aluminum housing die-casting mechanism, characterized by: The invention comprises a fixed mold frame (1), a movable mold frame (2) is arranged on one side of the fixed mold frame (1), a fixed mold core assembly (3) is arranged inside the fixed mold frame (1), a movable mold core assembly (4) is arranged on the side of the fixed mold core assembly (3) close to the movable mold frame (2), an insert assembly (5) is arranged around the movable mold core assembly (4), and a product integral part (6) is arranged between the fixed mold core assembly (3) and the movable mold core assembly (4); The fixed mold core assembly (3) comprises a fixed mold core shell part (31), a fixed mold core forming plate (32) is arranged at the center of the fixed mold core shell part (31), a fixed mold runner (33) is arranged on one side of the fixed mold core shell part (31), fixed mold exhaust plates (34) are arranged on both sides of the fixed mold core shell part (31), a fixed mold exhaust groove (35) is arranged on one side of the fixed mold exhaust plate (34), a fixed mold exhaust hole (36) is arranged on the side of the fixed mold exhaust plate (34) away from the fixed mold core shell part (31), an exhaust groove channel hole (37) is arranged on the side of the fixed mold core shell part (31) close to the fixed mold exhaust groove (35), and a fixed mold runner (38) is arranged on the side of the fixed mold core shell part (31) close to the fixed mold core forming plate (32); The product integral part (6) comprises a product runner (61), a product runner (62) is arranged on one side of the product runner (61), a product molding (63) is arranged on the side of the product runner (62) away from the product runner (61), a through hole groove (64) is provided on the side of the product molding (63) away from the product runner (62), a molding bridge (65) is arranged at the center of the through hole groove (64), a first through hole (66) is provided on one side of the product molding (63), a second through hole (67) is provided on the side of the product molding (63) away from the first through hole (66), exhaust blocks (68) are respectively arranged on both sides of the product molding (63), and a plurality of guide blocks (69) are arranged around the product molding (63).

2. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 1, characterized in that: The outer side of the fixed mold core shell (31) is adapted to the shape of the inner wall of the fixed mold frame (1), the shape of the fixed mold core forming plate (32) is adapted to the shape of one side of the product forming (63), and the fixed mold runner (33) is configured as a hollow cylindrical structure.

3. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 2, characterized in that: One side of the fixed mold runner (33) is connected to the fixed mold runner (38), two groups of fixed mold exhaust plates (34) are symmetrically arranged along the center of the fixed mold core shell (31), and the fixed mold exhaust groove (35) is adapted in shape to one side of the exhaust block (68).

4. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 3, characterized in that: The fixed mold exhaust hole (36) is provided in a circular structure, and the exhaust groove channel hole (37) is provided in a circular structure, and the exhaust groove channel hole (37) has a smaller diameter than the fixed mold exhaust hole (36).

5. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 4, characterized in that: The fixed mold core shell portion (31) comprises a first bridging groove (311), the first bridging groove (311) being opened close to a side of the fixed mold core forming plate (32), a second bridging groove (312) being opened on one side of the first bridging groove (311), and the second bridging groove (312) being opened to the same depth as the first bridging groove (311).

6. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 1, characterized in that: The movable mold core assembly (4) comprises a movable mold core forming plate portion (41), a runner insert (42) is arranged on one side of the movable mold core forming plate portion (41), a first insert (43) is arranged on one side of the runner insert (42), a bottom plate insert portion (44) is arranged on one side of the first insert (43), and a second insert (45) is arranged on the side of the movable mold core forming plate portion (41) away from the first insert (43).

7. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 6, characterized in that: The movable mold core forming plate portion (41) comprises a movable mold core forming plate shell (411), the movable mold core forming plate shell (411) is arranged as a convex structure, an island groove (412) is provided on one side of the movable mold core forming plate shell (411), the island groove (412) is arranged as a structure with a circular center and rectangular sides, and a plurality of groups of guide grooves (413) are arranged around the movable mold core forming plate shell (411); The bottom plate inlay block portion (44) comprises a bottom plate inlay shell (441), a first through hole block (442) is arranged on one side of the bottom plate inlay shell (441), a bridging groove (443) is provided at the center of the first through hole block (442), a second through hole block (444) is arranged on one side of the bottom plate inlay shell (441), and a third through hole block (445) is arranged on a side of the bottom plate inlay shell (441) away from the second through hole block (444).

8. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 7, characterized in that: The movable mold core forming plate shell (411) is adapted in shape to one side of the product forming (63), the island groove (412) is adapted in shape to the bottom end of the product forming (63), the guide groove (413) is adapted in shape to the guide block (69), the first through hole block (442) is adapted in shape to the through hole groove (64), the bridge groove (443) is adapted in shape to the forming bridge (65), the second through hole block (444) is adapted in shape to the first through hole (66), and the third through hole block (445) is adapted in shape to the second through hole (67).

9. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 8, characterized in that: The insert assembly (5) comprises four groups of oil cylinders (51) arranged around the movable mold core assembly (4), each group of the oil cylinders (51) is provided with a mounting plate (52) on the side close to the movable mold core assembly (4), each group of the mounting plates (52) is provided with two groups of fixed guide plates (59) on the side close to the movable mold core assembly (4), one group of the oil cylinders (51) is fixedly connected to a runner push block (53) at its output end, one group of the oil cylinders (51) is fixedly connected to a first push block (54) at its output end, and one group of the oil cylinders (51) is fixedly connected to a first push block (54) at its output end. The output end of the oil cylinder (51) is fixedly connected to a bottom plate push block (55), wherein one group of the output ends of the oil cylinder (51) is fixedly connected to a second push block (56), one side of the runner push block (53) and the bottom plate push block (55) is respectively provided with a group of exhaust plates (57), and the two groups of exhaust plates (57) are symmetrical along the center of the movable mold core assembly (4), and one side of the runner push block (53), the first push block (54), the bottom plate push block (55), and the second push block (56) is respectively slidably connected to two groups of guide strips (58).

10. A new energy vehicle PTC aluminum housing die-casting mechanism according to claim 9, characterized in that: The oil cylinder (51) is fixedly connected to the mounting plate (52), the mounting plate (52) is fixedly connected to two groups of fixed guide plates (59), the fixed guide plates (59) are fixedly connected to the movable mold frame (2), the runner push block (53) is adapted in shape to the runner insert (42), the first push block (54) is adapted in shape to the first insert (43), the bottom plate push block (55) is adapted in shape to the bottom plate insert part (44), the second push block (56) is adapted in shape to the second insert (45), the exhaust plate (57) is adapted in shape to the other side of the exhaust block (68), and the runner push block (53), the first push block (54), the bottom plate push block (55), and the second push block (56) are slidably connected to the fixed guide plate (59).

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