Engine cylinder cover mold convenient to demold and cylinder cover thereof

Abstract

The utility model relates to the technical field of casting molds, in particular to an engine cylinder cover mold convenient to demold and a cylinder cover thereof.The engine cylinder cover mold convenient to demold comprises an upper mold body, a lower mold body and a sand core, a driving air cylinder is arranged on the top face of the upper mold body and fixedly installed on a mold support, and the lower end of the mold support is installed on a base; the output end of the driving cylinder is fixedly mounted on the top surface of the upper mold; the upper mold is arranged on the base, the lower mold is arranged on the base and located under the upper mold, the upper mold is provided with a pouring opening, the pouring opening is communicated with an inner cavity defined by the upper mold and the lower mold, a pouring hopper is installed on the pouring opening, the upper mold is provided with an exhaust hole, and the exhaust hole is communicated with the inner cavity defined by the upper mold and the lower mold. The exhaust holes can ensure that air in the mold is exhausted, air and molten metal are prevented from being mixed to form air holes, the strength and the sealing performance of the cylinder body are improved, and therefore the overall performance of an engine is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of casting molds, and in particular to an engine cylinder head mold and a cylinder head thereof that are easy to demould. Background Art

[0002] With the progress of society and the development of science, cars came into being. In modern society, cars are widely used as a means of transportation, and the driving of cars is inseparable from the engine. The engine, as the power source of the car, converts thermal energy into kinetic energy, and then transmits it to the car's transmission system. Finally, the car is driven continuously under the non-stop operation of the engine.

[0003] As an important component of the engine, the engine cylinder head is installed on the upper end of the engine cylinder block and withstands the high temperature and high pressure working environment together with the cylinder during engine operation. Therefore, the quality of the engine cylinder head directly affects the service life and output efficiency of the engine.

[0004] Currently, engine cylinder heads are primarily manufactured using a casting process. Molten aluminum is poured into a cylinder head mold and then removed from the mold after the molten aluminum cools. However, during the casting process, it is difficult to expel air from the mold. If this air cannot be completely expelled, it mixes with the molten metal and forms pores during solidification. These pores can appear inside or on the surface of the cylinder head, significantly reducing its strength and sealing, and thus affecting overall engine performance. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide an engine cylinder head mold and a cylinder head that are easy to demold, so as to solve the problem mentioned in the background technology that the engine cylinder head has difficulty in removing air during the casting process, resulting in the mixing of air and molten metal to form pores, which reduces the strength and sealing of the cylinder head and thus affects the overall performance of the engine.

[0006] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0007] A mold for an engine cylinder head that is easy to demold, comprising an upper mold, a lower mold and a sand core, wherein the upper mold is placed on the lower mold, and the sand core is installed in an inner cavity formed by the upper mold and the lower mold, and the top surface of the upper mold is provided with a driving cylinder, and the driving cylinder is fixedly mounted on the mold bracket, and the lower end of the mold bracket is mounted on the base, and the output end of the driving cylinder is fixedly mounted on the top surface of the upper mold; the lower mold is arranged on the base and is located directly below the upper mold, and the upper mold is provided with a pouring port, and the pouring port is connected to the inner cavity enclosed by the upper mold and the lower mold, and a pouring bucket is installed on the pouring port, and the upper mold is provided with an exhaust hole, and the exhaust hole is connected to the inner cavity enclosed by the upper mold and the lower mold, and the sand core and the exhaust hole are connected to each other.

[0008] A further optimized solution is that demoulding devices are provided at both ends of the upper mold and the lower mold, and recessed areas are provided at both ends of the upper mold and the lower mold. The demoulding devices are partially installed in the recessed areas. The demoulding devices include an upper demoulding structure connected to the upper mold and a lower demoulding structure connected to the lower mold. The movement direction of the upper demoulding structure is set downward, and the movement direction of the lower demoulding structure is set upward.

[0009] A further optimized solution is provided, in which the upper demoulding structure includes an upper demoulding plate installed in the recessed area of ​​the upper mold, the upper demoulding plate having the same shape as the recessed area of ​​the upper mold, an upper demoulding rod being fixedly installed on the upper end surface of the upper demoulding plate, a through hole penetrating the recessed area of ​​the upper mold being opened on the upper demoulding plate, the upper demoulding rod being slidably connected to the upper mold through the through hole, an upper demoulding cylinder being installed on the other end of the upper demoulding rod, the upper demoulding cylinder being fixedly installed on the mold bracket, and the output end of the upper demoulding cylinder being fixedly connected to the upper demoulding rod.

[0010] A further optimized solution is provided, in which the lower demoulding structure includes a lower demoulding plate installed in the recessed area of ​​the lower mold, the lower demoulding plate having the same shape as the recessed area of ​​the lower mold, a lower demoulding rod being fixedly installed on the lower end surface of the lower demoulding plate, a through hole penetrating the recessed area of ​​the lower mold being opened on the lower template, the lower demoulding rod being slidably connected to the lower mold through the through hole, a lower demoulding cylinder being installed on the other end of the lower demoulding rod, the lower demoulding cylinder being fixedly installed on the base, and the output end of the lower demoulding cylinder being fixedly connected to the lower demoulding rod.

[0011] A further optimized solution is that the base is provided with an installation area, the lower mold is installed in the installation area, the lower mold is provided with a threaded opening, a fixing bolt is connected to the threaded opening, the base is provided with a through hole connected to the threaded opening, and the fixing bolt passes through the through hole and is threadedly connected to the threaded opening.

[0012] According to a further optimized solution, a striking device for vibrating the lower mold is provided on the base in the installation area.

[0013] A further optimized solution is that the knocking device includes a knocking motor fixedly installed in the base placement area and located below the lower mold, the output of the knocking motor is fixedly installed with a circular plate, and a cylinder is fixedly installed on the other side of the circular plate, and the cylinder is perpendicular to the circular plate. The cylinder is movably connected to a knocking rod, and a knocking bracket is rotatably connected to the knocking rod, and the other end of the knocking bracket is connected to the base, and the end of the knocking rod away from the knocking motor abuts against the bottom surface of the lower mold, and the lower end is fixedly connected to a compression spring, and the other end of the compression spring is fixedly connected to the base.

[0014] A further optimized solution is a cylinder head, suitable for an engine cylinder head mold that is easy to demold as described in any one of the above claims, wherein the cylinder head has an exhaust hole, a sealing bolt is installed in the exhaust hole, the bolt is threadedly connected to the engine cylinder head, and the bolt is coated with an anti-loosening rubber layer.

[0015] In summary, this application has at least the following beneficial technical effects:

[0016] 1. By opening an exhaust hole on the upper mold, and according to actual conditions, multiple exhaust holes can be opened. The exhaust hole can ensure the discharge of air in the mold, prevent the air from mixing with the molten metal to form air holes, improve the strength and sealing of the cylinder body, and thus ensure the overall performance of the engine.

[0017] 2. By setting the driving cylinder and upper demoulding device on the upper mold and the lower demoulding device on the lower mold, when the engine cylinder head in the mold needs to be demoulded after cooling, the cooperation of starting and controlling the driving cylinder, the upper demoulding device and the lower demoulding device can easily separate the engine cylinder head from the upper mold and the lower mold. The mold has a simple structure, convenient operation and high demoulding efficiency, thereby improving casting efficiency.

[0018] 3. Through the set knocking device, the lower mold is vibrated during the casting process of the engine cylinder head, and the auxiliary exhaust holes are used to discharge the air in the mold, thereby improving the casting quality of the cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 2 is a schematic diagram of the overall structure of the embodiment;

[0020] Figure 2 yes Figure 1 Cross-sectional view along point AA;

[0021] Figure 3 It is a schematic diagram of the cylinder head;

[0022] Figure 4 This is a schematic diagram of the cylinder head from another perspective.

[0023] Figure numerals: 1. upper mold; 10. exhaust hole; 11. pouring port; 12. pouring bucket; 2. lower mold; 3. driving cylinder; 4. mold bracket; 5. base; 50. fixing bolt; 6. upper demoulding mechanism; 60. upper demoulding plate; 61. upper demoulding rod; 62. upper demoulding cylinder; 7. lower demoulding mechanism; 70. lower demoulding plate; 71. lower demoulding rod; 72. lower demoulding cylinder; 8. knocking device; 80. knocking motor; 81. circular plate; 82. cylinder; 83. knocking rod; 84. knocking bracket; 85. compression spring; 9. sealing bolt; 90. sand core. DETAILED DESCRIPTION

[0024] The present application is further described in detail below with reference to the accompanying drawings.

[0025] Example, see Figure 1 and Figure 2 A mold for an engine cylinder head that is easy to demould comprises an upper mold 1, a lower mold 2 and a sand core 90. The upper mold 1 is placed on the lower mold 2. The sand core 90 is installed in the inner cavity formed by the upper mold 1 and the lower mold 2. The top surface of the upper mold 1 is provided with a driving cylinder 3, which is fixedly installed on a mold bracket 4. The lower end of the mold bracket 4 is installed on a base 5. The output end of the driving cylinder 3 is fixedly installed on the top surface of the upper mold 1. The lower mold 2 is provided on the base 5 and is located directly below the upper mold 1. The upper mold 1 is provided with a pouring port 11, which is connected to the inner cavity enclosed by the upper mold 1 and the lower mold 2. A pouring bucket 12 is installed on the pouring port 11. The upper mold 1 is provided with an exhaust hole 10, which is connected to the inner cavity enclosed by the upper mold 1 and the lower mold 2. The sand core 90 is connected to the exhaust hole (10). The pouring port 11 and the pouring bucket 12 installed on the pouring port 11 facilitate workers to pour molten aluminum into the mold. The upper mold 1 can be provided with multiple exhaust holes 10 according to the size and shape of the actual engine cylinder head, so as to facilitate the discharge of air in the mold, thereby improving the casting quality of the cylinder head and avoiding the mixing of air and molten metal to form pores, thereby improving the strength and sealing of the cylinder, thereby ensuring the overall performance of the engine.

[0026] In the embodiment disclosed herein, demolding devices are provided at both ends of the upper mold 1 and the lower mold 2. Both ends of the upper mold 1 and the lower mold 2 are provided with recessed areas, and the demolding devices are partially installed in the recessed areas. The demolding devices include an upper demolding structure connected to the upper mold 1 and a lower demolding structure connected to the lower mold 2. The upper demolding structure is configured to move downward, while the lower demolding structure is configured to move upward. When the engine cylinder head in the mold cools and needs to be demolded, the engine cylinder head is easily separated from the upper mold 1 and the lower mold 2 by cooperating with the control drive cylinder 3, the upper demolding device, and the lower demolding device. This allows for convenient operation and high demolding efficiency, thereby improving casting efficiency.

[0027] In the embodiment of the present disclosure, the upper demolding structure includes an upper demolding plate 60 installed in the recessed area of ​​the upper mold 1. The upper demolding plate 60 has the same shape as the recessed area of ​​the upper mold 1 and is horizontal with the bottom surface of the upper mold 1. An upper demolding rod 61 is fixedly installed on the upper end surface of the upper demolding plate 60. A through hole is opened on the upper demolding plate and penetrates the recessed area of ​​the upper mold 1. The upper demolding rod 61 is slidably connected to the upper mold 1 through the through hole. The other end of the upper demolding rod 61 is installed with an upper demolding cylinder 62. The upper demolding cylinder 62 is fixedly installed on the mold bracket 4. The output end of the upper demolding cylinder 62 is fixedly connected to the upper demolding rod 61. When demolding is required, the driving cylinder 3 drives the upper mold 1 to move upward. At the same time, the upper demolding cylinders 62 installed at both ends of the upper mold 1 push the upper demolding rod 61. The upper demolding rod 61 drives the upper demolding plate 60, thereby separating the engine cylinder head from the upper mold 1.

[0028] In the embodiment of the present disclosure, the lower demolding structure includes a lower demolding plate 70 installed in the recessed area of ​​the lower mold 2. The lower demolding plate 70 has the same shape as the recessed area of ​​the lower mold 2 and is horizontal with the top surface of the lower mold 2. A lower demolding rod 71 is fixedly installed on the lower end surface of the lower demolding plate 70. A through hole is opened on the lower template and penetrates the recessed area of ​​the lower mold 2. The lower demolding rod 71 is slidably connected to the lower mold 2 through the through hole. The other end of the lower demolding rod 71 is installed with a lower demolding cylinder 72. The lower demolding cylinder 72 is fixedly installed on the base 5, and the output end of the lower demolding cylinder 72 is fixedly connected to the lower demolding rod 71. When demolding is required, the lower demolding cylinder 72 drives the lower demolding rod 71, and the lower demolding rod 71 drives the lower demolding plate 70 to move upward, thereby separating the engine cylinder head from the lower mold 2.

[0029] In the embodiment disclosed herein, to improve the stability of the lower mold 2 during operation, a mounting area is provided on the base 5. The lower mold 2 is mounted within the mounting area. The lower mold 2 is provided with a threaded opening, into which a fixing bolt 50 is connected. The base 5 is provided with a through-hole communicating with the threaded opening, through which the fixing bolt 50 is threadedly connected. This secures the base 5 to the lower mold 2.

[0030] In the embodiment of the present disclosure, a knocking device 8 for vibrating the lower mold 2 is provided on the base 5 in the installation area.

[0031] Specifically, the knocking device 8 includes a knocking motor 80 fixedly installed in the placement area of ​​the base 5 and located below the lower mold 2. The output of the knocking motor 80 is fixedly installed with a circular plate 81, and a cylinder 82 is fixedly installed on the other side of the circular plate 81. The cylinder 82 is perpendicular to the circular plate 81, and the cylinder 82 is movably connected to a knocking rod 83. The knocking rod 83 is rotatably connected to a knocking bracket 84, and the other end of the knocking bracket 84 is connected to the base 5. The end of the knocking rod 83 away from the knocking motor 80 abuts against the bottom surface of the lower mold 2, and the lower end is fixedly connected to a compression spring 85, and the other end of the compression spring 85 is fixedly connected to the base 5. When molten aluminum is injected into the mold, the knocking motor 80 is started, which drives the circular plate 81 to rotate, and the circular plate 81 drives the cylinder 82 to rotate, thereby intermittently connecting with one end of the knocking rod 83. When the circular plate 81 rotates, it drives one end of the knocking rod 83 to move toward the lower mold 2, so that the other end of the knocking rod 83 is away from the bottom surface of the lower mold 2. When the cylinder 82 and the knocking rod 83 are separated, the rebound force of the compression spring 85 causes the knocking rod 83 to hit the bottom of the lower mold 2, thereby quickly removing the air inside the mold. This reduces the generation of bubbles during the pouring of the engine cylinder head, which affects the pouring quality of the cylinder head.

[0032] More specifically, a plurality of cylinders 82 are arranged in a circumferential array on the circular plate 81 .

[0033] In the embodiments of the present disclosure, referring to Figure 3 and Figure 4 A cylinder head is suitable for an engine cylinder head mold that is easy to demold in the above technical solution. The cylinder head has an exhaust hole 10, and a sealing bolt 9 is installed in the exhaust hole 10. The sealing bolt 9 is threadedly connected to the engine cylinder head, and the sealing bolt 9 is coated with an anti-loosening rubber layer.

[0034] In the specific implementation process, the manufactured sand core 90 is installed in the inner cavity of the upper mold 1 and the lower mold 2, the driving cylinder 3 is started to join the upper mold 1 and the lower mold 2 together, the pouring bucket 12 is installed on the pouring port 11 of the upper mold 1, and while pouring molten aluminum into the mold, the knocking motor 80 is started. The knocking motor 80 drives the circular plate 81 to rotate. While the circular plate 81 rotates, the multiple cylinders 82 installed on the circular plate 81 intermittently contact the knocking rod 83 and drive the knocking rod 83 to move upward, so that the other end of the knocking rod 83 squeezes the compression spring 85. When the cylinder 82 separates from the knocking rod 83, under the elastic force of the compression spring 85, the other end of the knocking rod 83 is driven to quickly abut against the lower mold 2, thereby starting the purpose of vibrating the lower mold 2, and then quickly discharge the air in the mold. After the aluminum liquid cools down, the driving cylinder 3 drives the upper mold 1 to move upward. At the same time, the upper demoulding cylinders 62 installed at both ends of the upper mold 1 push the upper demoulding rod 61, and the upper demoulding rod 61 drives the upper demoulding plate 60, thereby separating the engine cylinder head from the upper mold 1. The lower demoulding cylinder 72 drives the lower demoulding rod 71, and the lower demoulding rod 71 drives the lower demoulding plate 70 to move upward, thereby separating the engine cylinder head from the lower mold 2. After the mold is cooled, the exhaust hole 10 is sealed by the sealing bolt 9.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An engine cylinder head mold that is easy to demould, comprising an upper mold (1), a lower mold (2) and a sand core (90), wherein the upper mold (1) is placed on the lower mold (2), and the sand core (90) is installed in an inner cavity formed by the upper mold (1) and the lower mold (2), characterized in that: The top surface of the upper mold (1) is provided with a driving cylinder (3), the driving cylinder (3) is fixedly mounted on a mold support (4), the lower end of the mold support (4) is mounted on a base (5), and the output end of the driving cylinder (3) is fixedly mounted on the top surface of the upper mold (1); the lower mold (2) is arranged on the base (5) and is located directly below the upper mold (1); the upper mold (1) is provided with a pouring port (11), the pouring port (11) is communicated with an inner cavity enclosed between the upper mold (1) and the lower mold (2), and a pouring bucket (12) is mounted on the pouring port (11); the upper mold (1) is provided with an exhaust hole (10), the exhaust hole (10) is communicated with an inner cavity enclosed between the upper mold (1) and the lower mold (2), and the sand core (90) and the exhaust hole (10) are connected to each other.

2. The engine cylinder head mold that is easy to demould according to claim 1, characterized in that: Both ends of the upper mold (1) and the lower mold (2) are provided with demoulding devices, and both ends of the upper mold (1) and the lower mold (2) are provided with recessed areas, and the demoulding device is partially installed in the recessed areas. The demoulding device comprises an upper demoulding structure connected to the upper mold (1) and a lower demoulding structure connected to the lower mold (2), and the upper demoulding structure is arranged to move downward, and the lower demoulding structure is arranged to move upward.

3. The engine cylinder head mold that is easy to demould according to claim 2, characterized in that: The upper demoulding structure comprises an upper demoulding plate (60) installed in a recessed area of ​​the upper mold (1); the upper demoulding plate (60) has the same shape as the recessed area of ​​the upper mold (1); an upper demoulding rod (61) is fixedly installed on the upper end surface of the upper demoulding plate (60); a through hole penetrating the recessed area of ​​the upper mold (1) is opened on the upper demoulding plate; the upper demoulding rod (61) is slidably connected to the upper mold (1) through the through hole; an upper demoulding cylinder (62) is installed at the other end of the upper demoulding rod (61); the upper demoulding cylinder (62) is fixedly installed on the mold bracket (4); and the output end of the upper demoulding cylinder (62) is fixedly connected to the upper demoulding rod (61).

4. The engine cylinder head mold that is easy to demould according to claim 2, characterized in that: The lower demoulding structure comprises a lower demoulding plate (70) installed in a recessed area of ​​the lower mold (2); the lower demoulding plate (70) has the same shape as the recessed area of ​​the lower mold (2); a lower demoulding rod (71) is fixedly installed on the lower end surface of the lower demoulding plate (70); a through hole penetrating the recessed area of ​​the lower mold (2) is opened on the lower mold (2); the lower demoulding rod (71) is slidably connected to the lower mold (2) through the through hole; a lower demoulding cylinder (72) is installed at the other end of the lower demoulding rod (71); the lower demoulding cylinder (72) is fixedly installed on the base (5); and the output end of the lower demoulding cylinder (72) is fixedly connected to the lower demoulding rod (71).

5. The engine cylinder head mold that is easy to demould according to claim 1, characterized in that: The base (5) is provided with an installation area, the lower mold (2) is installed in the installation area, the lower mold (2) is provided with a threaded opening, a fixing bolt (50) is connected to the threaded opening, the base (5) is provided with a through hole connected to the threaded opening, and the fixing bolt (50) passes through the through hole and is threadedly connected to the threaded opening.

6. The engine cylinder head mold that is easy to demould according to claim 5, characterized in that: A knocking device (8) for vibrating the lower mold (2) is arranged on the base (5) in the installation area.

7. The engine cylinder head mold that is easy to demould according to claim 6, characterized in that: The knocking device (8) comprises a knocking motor (80) fixedly mounted in a placement area of ​​a base (5) and located below the lower mold (2); a circular plate (81) is fixedly mounted on the output of the knocking motor (80); a cylinder (82) is fixedly mounted on the other surface of the circular plate (81); the cylinder (82) is perpendicular to the circular plate (81); a knocking rod (83) is movably connected to the cylinder (82); a knocking bracket (84) is rotatably connected to the knocking rod (83); the other end of the knocking bracket (84) is connected to the base (5); one end of the knocking rod (83) away from the knocking motor (80) abuts against the bottom surface of the lower mold (2); and a compression spring (85) is fixedly connected to the lower end; the other end of the compression spring (85) is fixedly connected to the base (5).

8. A cylinder head, suitable for an engine cylinder head mold that is easy to demould according to any one of claims 1 to 7, characterized in that: The cylinder head is provided with an exhaust hole (10), a plugging bolt (9) is installed in the exhaust hole (10), the plugging bolt (9) is threadedly connected to the engine cylinder head, and an anti-loosening rubber layer is coated on the plugging bolt (9).

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