Mobile phone metal structural part casting module convenient to demould

Abstract

The mobile phone metal structural part casting module convenient to demould comprises a lower plate, two guide rods are fixedly mounted at the top of the lower plate, an upper plate is fixedly mounted at the tops of the two guide rods, an air cylinder is fixedly mounted at the bottom of the upper plate, an upper mould is fixedly connected to the telescopic end of the air cylinder, and a lower mould is fixedly connected to the telescopic end of the air cylinder. And guide blocks are fixedly installed on the outer walls of the two sides of the upper die, the two guide blocks are arranged on the two guide rods in a sliding and sleeving mode correspondingly, and a lower die located under the upper die is arranged at the top of the lower plate. In the moving process of the upper mold, a release agent can be automatically sprayed to the inner wall of the lower mold to assist in demolding, meanwhile, the release agent can be sprayed to the upper layer and the lower layer of the inner wall of the lower mold, spraying is comprehensive, a structural part can be air-cooled after being formed, in the air-cooling process, the blowing angle of cold air is variable, the air-cooling range is larger, and after air-cooling, the air-cooling effect is good. And the structural part is automatically ejected out for demolding, so that the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of casting modules, and in particular to a casting module for a mobile phone metal structure which is easy to demould. Background Art

[0002] With the booming smartphone industry, consumers are increasingly demanding a higher level of appearance, texture, structural strength, and overall performance. Mobile phone metal components, such as mid-frames and back panels, have become the preferred components for many high-end mobile phones due to their high strength, excellent heat dissipation, and exquisite metallic texture. Mobile phone metal structural component casting modules, the core equipment for manufacturing these key components, typically consist of an upper mold, a lower mold, and a series of auxiliary mechanisms. During the casting process, the upper and lower molds work together to form a specific cavity, into which molten metal is injected. After cooling and solidification, the desired mobile phone metal structural component is obtained.

[0003] However, during use, the structural parts of the existing casting mold are easily adhered to the inner wall of the lower mold and are difficult to remove, making it difficult to demold. In addition, in the existing technology, demolding often requires manual intervention to complete the demolding, which increases labor intensity and production time and is inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a casting module for a mobile phone metal structure that is easy to demould.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A casting module for a mobile phone metal structure that is easy to demold, comprising a lower plate, two guide rods fixedly mounted on the top of the lower plate, the same upper plate fixedly mounted on the tops of the two guide rods, a cylinder fixedly mounted on the bottom of the upper plate, an upper mold fixedly connected to the telescopic end of the cylinder, guide blocks fixedly mounted on both side outer walls of the upper mold, the two guide blocks are slidably mounted on the two guide rods respectively, a lower mold located directly below the upper mold is provided on the top of the lower plate, a receiving groove is provided at the bottom of the lower mold, an inner cavity is provided in the lower mold, a demolding mechanism is provided on the lower mold, an auxiliary mechanism is provided on the lower mold, an air cooling mechanism is provided on the lower mold, and an angle-changing mechanism is provided on the lower mold.

[0007] Preferably, the demoulding mechanism includes a demoulding box fixedly mounted on the top of the inner cavity, a demoulding rod slidably connected to the inner bottom of the accommodating groove is provided through the inner bottom of the accommodating groove, a top box is fixedly mounted on the upper end of the demoulding rod, the top box is adapted to the accommodating groove, a demoulding plug slidably connected to the inner wall of the demoulding box is fixedly mounted on the lower end of the demoulding rod, an auxiliary box is fixedly mounted on the inner wall of one side of the inner cavity, two second rods slidably connected to the outer wall of one side of the inner cavity are provided through the two second rods, and one end of the two second rods is fixedly mounted with the same rod slidably connected to the auxiliary box The cam is connected to the sliding member by a spring, and the cam is connected to the sliding member by a spring, and the cam is connected to the sliding member by a spring.

[0008] Preferably, the auxiliary mechanism includes a liquid guide box fixedly mounted on the other inner wall of the inner cavity, two first rods are provided on the other inner wall of the inner cavity which are slidably connected thereto, one end of the two first rods is fixedly mounted with the same spray plug block which is slidably connected to the inner wall of the liquid guide box, the other end of the two first rods is fixedly mounted with the same first protruding block located outside the inner cavity, a first spring is fixedly connected between the first protruding block and one side outer wall of the lower mold, the liquid guide box is provided with a fourth curved tube and a fifth curved tube which are connected to the interior thereof, the lower mold is provided with a liquid storage box, the end of the fifth curved tube away from the liquid guide box is connected to the liquid storage box, the end of the fourth curved tube away from the liquid guide box is connected to the top box, the top box is provided with evenly distributed spray holes, and the bottom of the other guide block is fixedly mounted with a first connecting block.

[0009] Preferably, the air cooling mechanism includes two air cooling boxes respectively fixedly mounted on the two outer walls of the lower mold, the bottoms of the two air cooling boxes are penetrated by an air cooling rod slidably connected thereto, the upper ends of the two air cooling rods are fixedly mounted with air cooling plugs, the two air cooling plugs are respectively slidably connected to the inner walls of the two air cooling boxes, a third spring is fixedly connected between the two air cooling plugs and the inner bottoms of the air cooling boxes, the bottoms of the two air cooling rods are fixedly connected to the same air cooling block located below the second overhanging block, the two air cooling boxes are respectively provided with a first curved pipe and a second curved pipe connected to the interior thereof, and refrigeration boxes are respectively provided on the outer walls of both sides of the lower mold, and one end of the two first curved pipes is respectively connected to the two refrigeration boxes.

[0010] Preferably, the angle-changing mechanism includes a rack fixedly mounted on the outer walls on both sides of the other guide block, two fixed blocks fixedly mounted on the lower mold are provided on both sides of the rack, and the same air-cooling pipe rotatably connected to the two fixed blocks located on the same side of the other guide block is passed through, a gear is fixedly mounted on the air-cooling pipe, a plurality of branch pipes connected to the interior thereof are provided on the air-cooling pipe, and a rotary joint is provided between one end of the two second curved pipes and one end of the two air-cooling pipes.

[0011] Preferably, the vertical cross-sections of the first connecting block, the first overhanging block, the second connecting block and the groove are all in the shape of a right-angled trapezoid.

[0012] Preferably, one-way valves are provided in the first curved pipe, the second curved pipe, the fourth curved pipe and the fifth curved pipe.

[0013] Preferably, the ends of the fourth and fifth curved pipes connected to the agent guide box are both located on the side of the spray plug away from the first protruding block, and the ends of the first and second curved pipes connected to the air cooling box are both located above the air cooling plug.

[0014] Beneficial effects of the present invention:

[0015] By setting up an auxiliary mechanism, the release agent can be automatically sprayed from the spray hole onto the inner wall of the lower mold during the downward movement of the upper mold, thereby effectively reducing subsequent adhesion and facilitating demoulding.

[0016] By setting up a demoulding mechanism, the top box can automatically move downward during the downward movement of the upper mold, and through mutual cooperation with the spraying of the release agent, it can be sprayed to the upper and lower parts of the inner wall of the lower mold, and the spraying is more comprehensive.

[0017] By setting up a cooling mechanism, cold air can be automatically blown to the formed structural parts during the downward movement of the upper mold, thereby quickly reducing the temperature of the casting, allowing it to reach solid strength faster and reducing the residence time in the mold.

[0018] By setting up an angle-changing mechanism, the air-cooling pipe can rotate to a certain angle during the upward movement of the upper mold, thereby changing the blowing direction of the cold air, expanding the cooling range, and improving the cooling effect.

[0019] Through the demoulding mechanism, the top box can automatically reset upward during the upward movement of the upper mold, so that the air-cooled molded part can be ejected for demoulding, which improves work efficiency and is easy to use.

[0020] The present invention can automatically spray a release agent on the inner wall of the lower mold to assist in demoulding during the movement of the upper mold. At the same time, the release agent can be sprayed to the upper and lower layers on the inner wall of the lower mold, and the spraying is comprehensive. After the structural part is formed, it can also be air-cooled. During the air-cooling process, the blowing angle of the cold air is variable, and the air-cooling range is larger. After air-cooling, the structural part can be automatically ejected for demoulding, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of one side of a casting module for a mobile phone metal structure that is easy to demould, as proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the other side of a casting module for a mobile phone metal structure that is easy to demould, as proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of a casting module for a mobile phone metal structure that is easy to demould, as viewed from above;

[0024] Figure 4 This is a cutaway perspective view of a casting module for a mobile phone metal structure that is easy to demould, as proposed by the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure inside the air-cooling box of the present invention.

[0026] In the figure: 1 lower plate, 2 guide rod, 3 lower mold, 4 refrigeration box, 5 air-cooling box, 6 air-cooling block, 7 first curved pipe, 8 fixed block, 9 second curved pipe, 10 rotary joint, 11 upper plate, 12 guide block, 13 upper mold, 14 air-cooling pipe, 15 top box, 16 rack, 17 gear, 18 first connecting block, 19 first overhanging block, 20 agent storage box, 21 first spring, 22 first rod, 23 second overhanging block, 24 second connecting block, 25 groove, 26 spray hole, 27 branch pipe, 28 cylinder, 29 spray plug, 30 receiving groove, 31 demoulding rod, 32 demoulding plug, 33 demoulding box, 34 third curved pipe, 35 auxiliary plug, 36 auxiliary box, 37 second rod, 38 second spring, 39 agent guide box, 40 fourth curved pipe, 41 fifth curved pipe, 42 third spring, 43 air-cooling plug, 44 air-cooling rod, 45 inner cavity. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-Figure 5A casting module for metal structural parts of mobile phones that is easy to demould comprises a lower plate 1, two guide rods 2 are fixedly installed on the top of the lower plate 1, the tops of the two guide rods 2 are fixedly installed with the same upper plate 11, the bottom of the upper plate 11 is fixedly installed with a cylinder 28, the telescopic end of the cylinder 28 is fixedly connected with an upper mold 13, and guide blocks 12 are fixedly installed on the outer walls of both sides of the upper mold 13. The two guide blocks 12 are respectively slidably mounted on the two guide rods 2. The top of the lower plate 1 is provided with a 13 is directly below the lower mold 3, the bottom of the lower mold 3 is provided with a receiving groove 30, the lower mold 3 is provided with an inner cavity 45, the lower mold 3 is provided with a demoulding mechanism, the demoulding mechanism includes a demoulding box 33 fixedly mounted on the top of the inner cavity 45, the inner bottom of the receiving groove 30 is penetrated by a demoulding rod 31 slidably connected thereto, the upper end of the demoulding rod 31 is fixedly mounted with a top box 15, the top box 15 is adapted to the receiving groove 30, and the lower end of the demoulding rod 31 is fixedly mounted with a demoulding rod 31 slidably connected to the inner wall of the demoulding box 33 The demoulding plug 32 has an auxiliary box 36 fixedly installed on the inner wall of one side of the inner cavity 45, and two second rods 37 slidably connected to it are provided on the outer wall of one side of the inner cavity 45. One end of the two second rods 37 is fixedly installed with the same auxiliary plug 35 slidably connected to the inner wall of the auxiliary box 36. A second spring 38 is fixedly connected between the auxiliary plug 35 and the inner wall of one side of the inner cavity 45. A third curved tube 34 connected to the auxiliary box 36 is provided on the side of the auxiliary plug 35 away from the second rod 37. One end of the third curved tube 34 away from the auxiliary box 36 is connected to the demoulding box 33. The end of the third curved tube 34 connected to the demoulding box 33 is located below the demoulding plug 32. The two second rods 37 are fixedly installed with the same second overhanging block 23 on one end outside the inner cavity 45. A groove 25 is provided on the second overhanging block 23, and a second connecting block 24 is fixedly installed on the bottom of one guide block 12. By setting up a demoulding mechanism, the structural part can be ejected after being formed and air-cooled.

[0029] The lower mold 3 is provided with an auxiliary mechanism, which includes a guide box 39 fixedly mounted on the other inner wall of the inner cavity 45, and two first rods 22 are provided on the other inner wall of the inner cavity 45 to be slidably connected thereto, and one end of the two first rods 22 is fixedly mounted with a spray plug 29 that is slidably connected to the inner wall of the guide box 39, and the other end of the two first rods 22 is fixedly mounted with a first overhanging block 19 located outside the inner cavity 45, and a first spring 21 is fixedly connected between the first overhanging block 19 and one side outer wall of the lower mold 3, and the guide box 39 is provided with a fourth curved tube 40 and a fifth curved tube 41 that are connected to the interior thereof, and the lower mold 3 is provided with a reservoir 20, and the end of the fifth curved tube 41 away from the guide box 39 is connected to the reservoir 20, and the fourth curved tube 40 is away from the guide box 39. One end is connected with the top box 15, and the top box 15 is provided with evenly distributed spray holes 26. The bottom of the other guide block 12 is fixedly installed with a first connecting block 18. The vertical sections of the first connecting block 18, the first overhanging block 19, the second connecting block 24 and the groove 25 are all right-angled trapezoidal shapes. One-way valves are provided in the first curved pipe 7, the second curved pipe 9, the fourth curved pipe 40 and the fifth curved pipe 41. The ends of the fourth curved pipe 40 and the fifth curved pipe 41 connected to the guide box 39 are both located on the side of the spray plug 29 away from the first overhanging block 19. The ends of the first curved pipe 7 and the second curved pipe 9 connected to the air-cooling box 5 are both located above the air-cooling plug 43. By setting an auxiliary mechanism, the release agent can be automatically sprayed on the inner wall of the lower mold 3 before the structural part is formed, thereby facilitating subsequent demolding.

[0030] The lower mold 3 is provided with an air-cooling mechanism, which includes two air-cooling boxes 5 respectively fixedly mounted on the two outer walls of the lower mold 3. The bottoms of the two air-cooling boxes 5 are penetrated by air-cooling rods 44 slidably connected thereto. The upper ends of the two air-cooling rods 44 are fixedly mounted with air-cooling plugs 43. The two air-cooling plugs 43 are respectively slidably connected to the inner walls of the two air-cooling boxes 5. A third spring 42 is fixedly connected between the two air-cooling plugs 43 and the inner bottoms of the air-cooling boxes 5. The bottoms of the two air-cooling rods 44 are fixedly connected to the same air-cooling block 6 located below the second overhanging block 23. The two air-cooling boxes 5 are provided with a first curved pipe 7 and a second curved pipe 9 connected thereto. Refrigeration boxes 4 are provided on the outer walls of both sides of the lower mold 3. One end of the two first curved pipes 7 is connected to the two refrigeration boxes 4 respectively. By providing an air-cooling mechanism, the structural parts can be automatically air-cooled after they are formed, thereby quickly reducing the temperature of the casting, enabling it to reach solid strength faster, and reducing its residence time in the mold.

[0031] The lower mold 3 is provided with an angle-changing mechanism, which includes a rack 16 fixedly mounted on the outer walls on both sides of the other guide block 12. Two fixed blocks 8 fixedly mounted on the lower mold 3 are provided on both sides of the rack 16. The same air-cooling pipe 14 rotatably connected to the two fixed blocks 8 on the same side of the other guide block 12 is passed through. A gear 17 is fixedly mounted on the air-cooling pipe 14. The air-cooling pipe 14 is provided with a plurality of branch pipes 27 connected to the interior thereof. A rotary joint 10 is provided between one end of the two second curved pipes 9 and one end of the two air-cooling pipes 14. By providing the angle-changing mechanism, the blowing angle can be automatically changed during the blowing process, thereby expanding the air-cooling range and improving the cooling effect.

[0032] When the present invention is used, the upper mold 13 is moved downward by starting the cylinder 28. During the downward movement of the upper mold 13, the guide rod 2 and the guide block 12 are provided, so that the first connecting block 18, the second connecting block 24 and the rack 16 can be moved downward synchronously. During the downward movement of the rack 16 until it is engaged with the gear 17, the first connecting block 18 cooperates with the first overhanging block 19, thereby enabling the first overhanging block 19 to move a distance in the direction close to the lower mold 3. The first spring 21 is compressed, thereby enabling the spray plug 29 to move to the left (see Appendix). Figure 4 In this way, the release agent in the agent guide box 39 can be squeezed into the top box 15 through the fourth curved tube 40 and finally sprayed toward the inner wall of the lower mold 3 through the spray hole 26. The second connecting block 24 will also cooperate with the groove 25, thereby enabling the second protruding block 23 to move away from the lower mold 3. By setting the second rod 37, the auxiliary plug 35 can be moved to the left (see the attached figure). Figure 4 The second spring 38 is compressed, and the incompressible liquid below the demoulding plug 32 in the demoulding box 33 is sucked into the auxiliary box 36 through the third curved tube 34. In this way, the demoulding plug 32 can move downward. By providing the demoulding rod 31, the top box 15 can be moved downward. The downward movement of the top box 15 cooperates with the spraying of the demoulding agent, so that the upper and lower parts of the inner wall of the lower mold 3 can be sprayed comprehensively. When the top box 15 moves downward to be flush with the inner bottom of the lower mold 3, the demoulding agent is no longer sprayed, and then the top box 15 continues to move downward for a distance to move into the receiving groove 30 and cooperate with the receiving groove 30.

[0033] Then, when the rack 16 moves downward and meshes with the gear 17, the second connecting block 24 moves downward and contacts the air-cooling block 6. Then, as the rack 16 continues to move downward, the gear 17 and the air-cooling pipe 14 rotate. At the same time, the second connecting block 24 moves the air-cooling block 6 downward. By providing the air-cooling rod 44, the air-cooling plug 43 moves downward, and the third spring 42 is compressed, so that the cold air in the refrigeration box 4 is sucked into the air-cooling box 5 through the first curved pipe 7. Finally, the upper mold 13 cooperates with the lower mold 3 to form the metal structure of the mobile phone.

[0034] After molding, the upper mold 13 is moved upward by the cylinder 28. During this process, the first connecting block 18, the second connecting block 24 and the rack 16 can be moved upward synchronously. The elastic force generated by the compression of the third spring 42 can make the air-cooling block 6 and the air-cooling plug block 43 move upward, and then the cold air sucked into the air-cooling box 5 can be squeezed into the air-cooling pipe 14 through the second curved pipe 9 and the rotary joint 10, and finally blown to the molded part through the branch pipe 27 for auxiliary cooling. At the same time, the rack 16 moves upward to make the gear 17 rotate in the opposite direction, and then the air-cooling pipe 14 can rotate accordingly. In this way, the angle of the cold air blowing can be changed, the cooling range can be expanded, and the cooling effect can be improved. When the air-cooling block 6 moves upward and returns to the initial state, After the initial position, the second connecting block 24 continues to move upward and gradually no longer cooperates with the groove 25. The elastic force generated by the compression of the second spring 38 can make the auxiliary plug 35 move to the right and reset, so that the demoulding plug 32 can move upward. By setting the demoulding rod 31, the top box 15 can be moved upward, so that the air-cooled molded part can be lifted up to achieve demoulding. The upward movement of the first connecting block 18 will no longer cooperate with the first overhanging block 19. By setting the first spring 21, the first overhanging block 19 can be moved to the right and back to the initial position, so that the demoulding agent in the storage box 20 can be sucked into the agent guide box 39 through the fifth curved pipe 41 for the next spraying.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A casting module for a mobile phone metal structure that is easy to demould, comprising a lower plate (1), characterized in that: Two guide rods (2) are fixedly installed on the top of the lower plate (1), and the tops of the two guide rods (2) are fixedly installed with the same upper plate (11), and the bottom of the upper plate (11) is fixedly installed with a cylinder (28), and the telescopic end of the cylinder (28) is fixedly connected to the upper mold (13), and the outer walls of both sides of the upper mold (13) are fixedly installed with guide blocks (12), and the two guide blocks (12) are respectively slidably mounted on the two guide rods (2), and the top of the lower plate (1) is provided with a lower mold (3) located directly below the upper mold (13), and the bottom of the lower mold (3) is provided with a receiving groove (30), and an inner cavity (45) is provided in the lower mold (3), and a demoulding mechanism is provided on the lower mold (3), an auxiliary mechanism is provided on the lower mold (3), an air cooling mechanism is provided on the lower mold (3), and an angle changing mechanism is provided on the lower mold (3).

2. A casting module for mobile phone metal structure that is easy to demould according to claim 1, characterized in that: The demoulding mechanism comprises a demoulding box (33) fixedly mounted on the top of the inner cavity (45); a demoulding rod (31) slidably connected to the inner bottom of the receiving groove (30); a top box (15) fixedly mounted on the upper end of the demoulding rod (31); the top box (15) is adapted to the receiving groove (30); a demoulding plug (32) slidably connected to the inner wall of the demoulding box (33) is fixedly mounted on the lower end of the demoulding rod (31); an auxiliary box (36) is fixedly mounted on the inner wall of one side of the inner cavity (45); two second rods (37) slidably connected to the inner wall of the auxiliary box (36) are fixedly mounted on the outer wall of one side of the inner cavity (45); one end of the two second rods (37) is fixedly mounted with the same auxiliary plug slidably connected to the inner wall of the auxiliary box (36). A second spring (38) is fixedly connected between the auxiliary plug (35) and the inner wall of one side of the inner cavity (45); a third curved tube (34) connected to the auxiliary box (36) is provided on the side of the auxiliary plug (35) away from the second rod (37); one end of the third curved tube (34) away from the auxiliary box (36) is connected to the demoulding box (33); one end of the third curved tube (34) connected to the demoulding box (33) is located below the demoulding plug (32); one end of the two second rods (37) located outside the inner cavity (45) is fixedly installed with the same second protruding block (23); a groove (25) is provided on the second protruding block (23); and a second connecting block (24) is fixedly installed at the bottom of one of the guide blocks (12).

3. A casting module for mobile phone metal structure that is easy to demould according to claim 2, characterized in that: The auxiliary mechanism includes a guide box (39) fixedly mounted on the other inner wall of the inner cavity (45), two first rods (22) slidably connected to the other inner wall of the inner cavity (45), one end of the two first rods (22) is fixedly mounted with a spray plug (29) slidably connected to the inner wall of the guide box (39), the other end of the two first rods (22) is fixedly mounted with a first overhanging block (19) located outside the inner cavity (45), and the first overhanging block (19) is fixedly connected to the outer wall of one side of the lower mold (3). A first spring (21) is provided on the agent guide box (39), and a fourth curved tube (40) and a fifth curved tube (41) are connected to the interior thereof. A drug storage box (20) is provided on the lower mold (3), and one end of the fifth curved tube (41) away from the agent guide box (39) is connected to the drug storage box (20). One end of the fourth curved tube (40) away from the agent guide box (39) is connected to the top box (15), and the top box (15) is provided with evenly distributed spray holes (26). A first connecting block (18) is fixedly installed at the bottom of the other guide block (12).

4. A casting module for metal structural parts of mobile phones that is easy to demould according to claim 3, characterized in that: The air cooling mechanism includes two air cooling boxes (5) respectively fixedly mounted on the two outer walls of the lower mold (3), the bottoms of the two air cooling boxes (5) are penetrated by an air cooling rod (44) slidably connected thereto, the upper ends of the two air cooling rods (44) are fixedly mounted with an air cooling plug (43), the two air cooling plugs (43) are respectively slidably connected to the inner walls of the two air cooling boxes (5), a third spring (42) is fixedly connected between the two air cooling plugs (43) and the inner bottom of the air cooling box (5), the bottoms of the two air cooling rods (44) are fixedly connected to the same air cooling block (6) located below the second protruding block (23), the two air cooling boxes (5) are respectively provided with a first curved pipe (7) and a second curved pipe (9) connected to the interior thereof, the outer walls of both sides of the lower mold (3) are provided with a refrigeration box (4), one end of the two first curved pipes (7) are respectively connected to the two refrigeration boxes (4).

5. The casting module for metal structural parts of mobile phones that is easy to demould according to claim 4, characterized in that: The angle-changing mechanism comprises a rack (16) fixedly mounted on the outer walls on both sides of the other guide block (12); two fixed blocks (8) fixedly mounted on the lower mold (3) are provided on both sides of the rack (16); a same air-cooling pipe (14) rotatably connected to the two fixed blocks (8) located on the same side of the other guide block (12) is provided through the two fixed blocks (8); a gear (17) is fixedly mounted on the air-cooling pipe (14); a plurality of branch pipes (27) connected to the interior of the air-cooling pipe (14) are provided on the air-cooling pipe (14); and a rotary joint (10) is provided between one end of each of the two second curved pipes (9) and one end of each of the two air-cooling pipes (14).

6. The casting module for mobile phone metal structure that is easy to demould according to claim 4, characterized in that: The vertical cross-sections of the first connecting block (18), the first overhanging block (19), the second connecting block (24) and the groove (25) are all in the shape of a right-angled trapezoid.

7. The casting module for mobile phone metal structure that is easy to demould according to claim 4, characterized in that: One-way valves are provided in the first curved pipe (7), the second curved pipe (9), the fourth curved pipe (40) and the fifth curved pipe (41).

8. The casting module for mobile phone metal structure that is easy to demould according to claim 4, characterized in that: The ends of the fourth curved pipe (40) and the fifth curved pipe (41) connected to the agent guide box (39) are both located on the side of the spray plug (29) away from the first protruding block (19), and the ends of the first curved pipe (7) and the second curved pipe (9) connected to the air cooling box (5) are both located above the air cooling plug (43).

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