A casting mold for a cylinder piston

Abstract

The present invention belongs to the technical field of metal casting and relates to a casting mold for a cylinder piston, which comprises a base, an outer mold cavity, an inner mold and a liquid injection sleeve. Both sides of the top of the base are slidably connected with the outer mold cavity. Inner molds are connected to both sides of the top of the base. Mold cavities are respectively arranged on both sides inside the outer mold cavity. When the two outer mold cavities approach each other, the mold cavities on both sides cooperate with the inner mold to form a molding cavity. A liquid injection sleeve is connected to the top of one of the outer mold cavities. Liquid injection channels are respectively arranged on one side of the two outer mold cavities close to each other. The two sides of the liquid injection channel are respectively communicated with the inside of the mold cavities on both sides, and the top of the liquid injection channel is communicated with the inside of the liquid injection sleeve. When casting the cylinder piston, the present invention can extract the air in the cavity through the air suction pipe, avoid the air splashing out through the liquid injection sleeve during the process of pouring molten aluminum, reduce the potential safety hazard during the operation process, and ensure the safety of the operator during the operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal casting and relates to a casting mold for a cylinder piston. Background Art

[0002] With the continuous progress of modern industry, the market demand for high-performance engines is increasing day by day, especially for the cylinder piston, which is a crucial component in internal combustion engines, and the requirements are becoming higher and higher. As one of the core components of the engine, the cylinder piston directly affects the overall performance and efficiency of the engine. In the process of machining the cylinder piston, the cylinder piston is usually machined by metal casting.

[0003] Currently, during the casting process of the cylinder piston, it is usually manually operated to pour the molten aluminum liquid into the casting mold. During the pouring process relying on the weight of the water filter, it depends on the experience and skills of the operator to control the flow rate and flow volume of the aluminum liquid to ensure the quality of the casting. However, during the actual operation, due to the presence of air inside the mold, when the aluminum liquid is poured, this air will escape through the pouring port, and sometimes even cause the aluminum liquid to splash out, posing a certain safety hazard. Moreover, during the casting process, if the air inside the mold is not effectively discharged, they will form pores or defects inside the casting, resulting in unqualified product quality and affecting the performance and service life of the final product. Summary of the Invention

[0004] In view of this, the present invention provides a casting mold for a cylinder piston.

[0005] The technical solution of the present invention is: a casting mold for a cylinder piston, including a base, an outer mold cavity, an inner mold, a liquid injection sleeve, and a suction pipeline. Both sides of the top of the base are slidably connected with the outer mold cavity. Both sides of the top of the base are connected with the inner mold. Mold cavities are respectively opened on both sides inside the outer mold cavity. When the two outer mold cavities approach each other, the mold cavities on both sides cooperate with the inner mold to form a forming cavity. A liquid injection sleeve is connected to the top of one of the outer mold cavities. Liquid injection channels are respectively opened on one side of the two outer mold cavities close to each other. Both sides of the liquid injection channel are respectively communicated with the inside of the mold cavities on both sides. The top of the liquid injection channel is communicated with the inside of the liquid injection sleeve. Suction pipelines are respectively opened on the tops of the two outer mold cavities. Suction channels are respectively opened on both sides of the two outer mold cavities. The suction pipeline is communicated with the suction channel. The suction channel is communicated with the inside of the mold cavity.

[0006] Optionally, it further includes an automatic feeding mechanism. The automatic feeding mechanism includes a pushing plate and a two-way cylinder. The two-way cylinder is installed on the inner top of the base. The pushing plates are slidably connected to both sides of the base. The pushing plate is connected with the outer mold cavity. The telescopic rods on both sides of the two-way cylinder are respectively connected with the pushing plates on both sides.

[0007] Optionally, it further includes a blocking mechanism, which includes a connecting frame, a sliding rod, a first elastic member, and a blocking plate. Connecting frames are connected to both sides of the air suction channel. A sliding rod is slidably connected between the two connecting frames. A blocking plate is connected to the bottom of the sliding rod. In the initial state, the blocking plate is located below the air suction channel. The upward movement of the blocking plate can block the air suction channel. A first elastic member is connected between the sliding rod and the upper connecting frame.

[0008] Optionally, it further includes an ejecting mechanism, which includes a pushing rod, a ejecting rod, and a second elastic member. A pushing rod is slidably connected to the middle of the inner mold. The bottom of the pushing rod is connected to the ejecting rod. Both the pushing rod and the ejecting rod are slidably connected to the base and the inner mold. A second elastic member is connected between the ejecting rod and the inner mold.

[0009] Optionally, it further includes a transmission mechanism, which includes a sliding frame and a pushing block. Sliding frames are connected to the lower parts on both sides of the ejecting rod. The sliding frames are slidably connected to the base. An inclined slot is formed in the sliding frame. Pushing blocks are connected to the lower parts on the mutually remote sides of the two pushing plates. The pushing blocks are aligned with the inclined slots.

[0010] Optionally, it further includes a cooling mechanism, which includes a drain pipe, a water injection pipe, and a water pump. Cooling chambers are formed on both sides of the outer mold cavity. A drain pipe is connected to the top of the cooling chamber. A water injection pipe communicates between the bottoms of the four cooling chambers. A water pump is installed on the water injection pipe.

[0011] Optionally, it further includes a contact switch. A contact switch is installed at the bottom of the lower connecting frame. The contact switch is electrically connected to the water pump.

[0012] Optionally, it further includes a reservoir. A reservoir is connected to the base. The water pump is located in the reservoir.

[0013] The beneficial effects are as follows: 1. When casting the cylinder piston of the present invention, the air in the cavity can be extracted through the air suction pipe, avoiding the splashing of air through the liquid injection sleeve during the pouring of molten aluminum, reducing the safety hazards during the operation process, ensuring the safety of the operator during operation, and at the same time avoiding the air remaining in the cavity resulting in pores and defects in the formed piston, ensuring the performance and service life of the product.

[0014] 2. After the cylinder piston is cast, the formed piston can be pushed out by the upward movement of the ejecting rod and the pushing rod, eliminating the need for manual removal of the formed piston, making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the present invention when the two outer mold cavities are in an open state.

[0017] Figure 3 It is a cross-sectional view of the present invention.

[0018] Figure 4 It is the right side view after cutting open of the present invention.

[0019] Figure 5 It is a cross-sectional view of the outer mold cavity of the present invention.

[0020] Figure 6 For the present invention Figure 5 Enlarged view of part A in .

[0021] Figure 7 It is a structural schematic diagram of the ejection mechanism and the transmission mechanism of the present invention.

[0022] Figure 8 It is a right side view of the ejection mechanism and the transmission mechanism of the present invention.

[0023] Figure 9 It is a schematic structural diagram of the cooling mechanism and water reservoir of the present invention.

[0024] Figure 10 It is a structural schematic diagram of the cooling mechanism of the present invention.

[0025] Wherein: 1-base, 2-outer mold cavity, 3-inner mold, 4-injection sleeve, 5-injection channel, 61-intake pipe, 62-intake channel, 71-push plate, 72-bidirectional cylinder, 81-sliding rod, 82-elastic part 1, 83-blocking plate, 84-connecting frame, 91-push rod, 92-elastic rod, 93-elastic part 2, 101-sliding frame, 102-chute, 103-push block, 11-drain pipe, 12-water injection pipe, 13-water pump, 131-contact switch, 14-cooling chamber, 15-water reservoir. DETAILED DESCRIPTION

[0026] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0027] A cylinder piston casting mold, such as Figures 1-4As shown in the figure, it includes a base 1, an outer mold cavity 2, an inner mold 3, a liquid injection sleeve 4 and a suction pipeline 61. On the left and right sides of the top of the base 1, the outer mold cavities 2 are slidably connected. On the front and back sides of the top of the base 1, the inner molds 3 are connected. Mold cavities are provided on the front and back sides inside the outer mold cavity 2. When the two outer mold cavities 2 approach each other, the mold cavities on the front and back sides cooperate with the inner mold 3 to form a molding cavity. Pouring molten aluminum into the cavity, the molten aluminum forms in the cavity and can be cast into a cylinder piston. The liquid injection sleeve 4 is connected to the top of the left outer mold cavity 2. Liquid injection channels 5 are provided on the sides of the two outer mold cavities 2 close to each other. The two sides of the liquid injection channel 5 are respectively communicated with the inside of the mold cavities on both sides. The top of the liquid injection channel 5 is communicated with the inside of the liquid injection sleeve 4. Suction pipelines 61 are provided on the tops of the two outer mold cavities 2. Suction channels 62 are provided on the front and back sides of the two outer mold cavities 2. The suction pipeline 61 is communicated with the suction channel 62. The suction channel 62 is communicated with the inside of the mold cavity. By sucking air through the suction pipeline 61, the air in the mold cavity can be sucked out through the suction channel 62.

[0028] As Figure 2 and Figure 3 shown in the figure, it further includes an automatic feeding mechanism. The automatic feeding mechanism includes a pushing plate 71 and a double-acting cylinder 72. The double-acting cylinder 72 is installed on the inner top of the base 1. The pushing plates 71 are slidably connected to the left and right sides of the base 1. The pushing plates 71 are connected to the outer mold cavities 2. The expansion rods on both sides of the double-acting cylinder 72 are respectively connected to the pushing plates 71 on both sides, so that the operation of the double-acting cylinder 72 can drive the pushing plates 71 on both sides to approach or move away from each other, thereby driving the outer mold cavities 2 on both sides to approach or move away from each other, so as to achieve the effect of automatically driving the outer mold cavity 2 to move.

[0029] When the cylinder piston casting mold needs to be used, this mold can be used. When in use, first control the telescopic rods of the two-way cylinders 72 on both sides to retract, driving the pushing plates 71 on both sides to approach each other. The approaching of the pushing plates 71 on both sides can drive the outer mold cavities 2 on both sides to approach each other, causing the two outer mold cavities 2 to close together. After the two outer mold cavities 2 are closed together, they cooperate with the two inner molds 3 to form a cavity. At this time, molten aluminum can be injected into the injection sleeve 4. The molten aluminum enters the outer mold cavities 2 on both sides through the injection channel 5. While injecting the molten aluminum, the air extraction end of the air extraction pump can be controlled to communicate with the air suction pipe 61, and then control the air extraction pump to extract air. When the air extraction pump extracts air, it can suck away the air in the formed cavity through the air suction pipe 61 and the air suction channel 62, causing a negative pressure inside the formed cavity. While generating a negative pressure, molten aluminum is injected through the injection channel 5 and the injection sleeve 4, causing the molten aluminum to fill the formed cavity, and the air can be sucked away when filling the molten aluminum, avoiding the generation of bubbles in the formed piston and also avoiding the ejection of gas from the injection sleeve 4 when pouring the molten aluminum. In this way, this device can be used for the casting work of the piston, and the air in the cavity can be extracted during casting, avoiding the presence of bubbles inside the formed piston and also avoiding the backspray of gas causing the molten aluminum to splash out.

[0030] As Figure 5 and Figure 6 shown, it further includes a blocking mechanism. The blocking mechanism includes a connecting frame 84, a sliding rod 81, a first elastic member 82 and a blocking plate 83. Connecting frames 84 are connected to both the upper and lower sides inside the air suction channel 62. A sliding rod 81 is slidably connected between the two connecting frames 84. The sliding rod 81 can slide up and down along the air suction channel 62. A blocking plate 83 is connected to the bottom of the sliding rod 81. In the initial state, the blocking plate 83 is located below the air suction channel 62. The upward movement of the blocking plate 83 can block the air suction channel 62. A first elastic member 82 is connected between the sliding rod 81 and the upper connecting frame 84. The first elastic member 82 is a compression spring.

[0031] In the initial state, the blocking plate 83 is located below the air suction channel 62 and does not hinder the air suction work of the air suction channel 62. As the molten aluminum in the cavity gradually increases, the molten aluminum will contact and squeeze the blocking plate 83 to move upward. The upward movement of the blocking plate 83 drives the sliding rod 81 to move upward, and the first elastic member 82 is compressed. After the blocking plate 83 moves upward, it blocks the air suction channel 62. At this time, the cavity is also filled with molten aluminum, and the blocking plate 83 can block the air suction channel 62 to prevent the molten aluminum from entering the air suction channel 62. In this way, the air suction channel 62 can be blocked after the cavity is filled with molten aluminum, preventing the molten aluminum from entering the air suction channel 62.

[0032] As Figure 7 and Figure 8As shown, it further includes an ejection mechanism. The ejection mechanism includes a pushing rod 91, a ejector rod 92, and a second elastic member 93. The pushing rod 91 is slidably connected to the middle of the inner mold 3. The bottom of the pushing rod 91 is connected to the ejector rod 92. Both the pushing rod 91 and the ejector rod 92 are slidably connected to the base 1 and the inner mold 3. A second elastic member 93 is connected between the ejector rod 92 and the inner mold 3. The second elastic member 93 is a connecting spring.

[0033] As Figure 7 and Figure 8 shown, it further includes a transmission mechanism. The transmission mechanism includes a sliding frame 101 and a pushing block 103. The lower parts on both the left and right sides of the ejector rod 92 are connected to the sliding frame 101. The sliding frame 101 is slidably connected to the base 1. The sliding frame 101 can slide up and down along the base 1. An inclined groove 102 is formed on the sliding frame 101. The lower parts on the mutually remote sides of the two pushing plates 71 are both connected to the pushing block 103. The pushing block 103 is aligned with the inclined groove 102, so that when the pushing block 103 moves, it can contact and press the inclined groove 102, thereby driving the inclined groove 102 to move upward.

[0034] After the aluminum liquid in the cavity is formed, the telescopic rod of the bidirectional cylinder 72 can be controlled to extend to drive the two pushing plates 71 to move away from each other. The two pushing plates 71 moving away from each other can control the two pushing blocks 103 to move away from each other. The two pushing blocks 103 moving away from each other can contact the inclined groove 102, and then press the inclined surface of the inclined groove 102, thereby driving the two sliding frames 101 to move upward. When the sliding frame 101 moves upward, it can drive the ejector rod 92 to move upward. The ejector rod 92 moving upward can drive the pushing rod 91 to move upward. The second elastic member 93 is stretched. When the pushing rod 91 moves upward, it can eject the formed piston. In this way, the piston can be automatically ejected after being formed, avoiding the need to manually pull out the piston, and the operation is more convenient.

[0035] As Figure 9 and Figure 10 shown, it further includes a cooling mechanism. The cooling mechanism includes a drain pipe 11, a water injection pipe 12, and a water pump 13. Cooling chambers 14 are formed on the front and rear sides in the outer mold cavity 2. The drain pipe 11 is connected to the top of the cooling chamber 14. A water injection pipe 12 communicates between the bottoms of the four cooling chambers 14. Water can be injected into the cooling chamber 14 through the water injection pipe 12. A water pump 13 is installed on the water injection pipe 12.

[0036] As Figure 9 and Figure 10 shown, it further includes a contact switch 131. The contact switch 131 is installed at the bottom of the lower connecting frame 84. The contact switch 131 is electrically connected to the water pump 13.

[0037] AsFigure 9 and Figure 10 As shown in Figure 10 , it further includes a reservoir 15. The reservoir 15 is connected to the base 1, and the water pump 13 is located in the reservoir 15 so that the operation of the water pump 13 can pump the water in the water pump 13 into the cooling chamber 14.

[0038] Initially, water can be added to the reservoir 15. After the sealing plate 83 moves upward, it can contact the contact switch 131, thereby controlling the start of the water pump 13. At this time, the mold cavity is also filled with molten aluminum. The start of the water pump 13 can pump the water in the reservoir 15 into the cooling chamber 14 through the water injection pipe 12, and the water in the cooling chamber 14 will be discharged through the drain pipe 11. By continuously injecting water into the cooling chamber 14, it can assist in cooling and shaping the molten aluminum to assist in the casting work of the piston. In this way, the water injection and cooling work can be automatically carried out after injecting the molten aluminum, without manual control of water injection, and the operation is more convenient.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylinder piston casting mold, characterized in that It includes a base (1), an outer mold cavity (2), an inner mold (3), a liquid injection sleeve (4), and a suction pipe (61). On both sides of the top of the base (1), the outer mold cavities (2) are slidably connected. On both sides of the top of the base (1), the inner molds (3) are connected. On both sides inside the outer mold cavity (2), mold cavities are provided. When the two outer mold cavities (2) approach each other, the mold cavities on both sides cooperate with the inner mold (3) to form a molding cavity. A liquid injection sleeve (4) is connected to the top of one of the outer mold cavities (2). On one side of the two outer mold cavities (2) close to each other, liquid injection channels (5) are provided. The two sides of the liquid injection channel (5) are respectively communicated with the inside of the mold cavities on both sides. The top of the liquid injection channel (5) is communicated with the inside of the liquid injection sleeve (4). On the top of the two outer mold cavities (2), suction pipes (61) are provided. On both sides of the two outer mold cavities (2), suction channels (62) are provided. The suction pipe (61) is communicated with the suction channel (62). The suction channel (62) is communicated with the inside of the mold cavity; It further includes an automatic feeding mechanism. The automatic feeding mechanism includes a pushing plate (71) and a double-acting cylinder (72). The double-acting cylinder (72) is installed on the inner top of the base (1). On both sides of the base (1), the pushing plates (71) are slidably connected. The pushing plate (71) is connected to the outer mold cavity (2). The telescopic rods on both sides of the double-acting cylinder (72) are respectively connected to the pushing plates (71) on both sides; It further includes a blocking mechanism. The blocking mechanism includes a connecting frame (84), a sliding rod (81), a first elastic member (82), and a blocking plate (83). On both sides of the suction channel (62), the connecting frames (84) are connected. A sliding rod (81) is slidably connected between the two connecting frames (84). The bottom of the sliding rod (81) is connected to the blocking plate (83). In the initial state, the blocking plate (83) is located below the suction channel (62). The upward movement of the blocking plate (83) can block the suction channel (62). A first elastic member (82) is connected between the sliding rod (81) and the upper connecting frame (84); It further includes an ejecting mechanism. The ejecting mechanism includes a pushing rod (91), a ejecting rod (92), and a second elastic member (93). The pushing rod (91) is slidably connected to the middle of the inner mold (3). The bottom of the pushing rod (91) is connected to the ejecting rod (92). The pushing rod (91) and the ejecting rod (92) are both slidably connected to the base (1) and the inner mold (3). A second elastic member (93) is connected between the ejecting rod (92) and the inner mold (3); It further includes a transmission mechanism. The transmission mechanism includes a sliding frame (101) and a pushing block (103). On the lower parts of both sides of the ejecting rod (92), the sliding frames (101) are connected. The sliding frame (101) is slidably connected to the base (1). An inclined slot (102) is provided on the sliding frame (101). On the lower parts of the sides of the two pushing plates (71) away from each other, the pushing blocks (103) are connected. The pushing block (103) is aligned with the inclined slot (102);It further includes a contact switch (131). The contact switch (131) is installed at the bottom of the lower connecting frame (84), and the contact switch (131) is electrically connected to the water pump (13).; 2. The casting mold for a cylinder piston according to claim 1, characterized in that, It further includes a cooling mechanism, and the cooling mechanism includes a drain pipe (11), a water injection pipe (12) and a water pump (13). Cooling chambers (14) are provided on both sides of the outer mold cavity (2). The drain pipe (11) is connected to the top of the cooling chamber (14). The water injection pipe (12) communicates between the bottoms of the four cooling chambers (14), and the water pump (13) is installed on the water injection pipe (12).

3. A cylinder piston casting mold according to claim 2, characterized in that, It further includes a reservoir (15). The reservoir (15) is connected to the base (1), and the water pump (13) is located in the reservoir (15).

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