Air cylinder piston casting mold

Abstract

The invention belongs to the technical field of metal casting, and relates to an air cylinder piston casting mold which comprises a base, outer mold cavities, inner molds and a liquid injection sleeve, the outer mold cavities are slidably connected to the two sides of the top of the base, the inner molds are connected to the two sides of the top of the base, mold cavities are formed in the two sides in the outer mold cavities, and the liquid injection sleeve is arranged in the mold cavities. When the two outer mold cavities draw close, the mold cavities on the two sides are matched with the inner mold to form a forming cavity, a liquid injection sleeve is connected to the top of one outer mold cavity, liquid injection channels are formed in the sides, close to each other, of the outer mold cavities on the two sides, and the two sides of each liquid injection channel communicate with the interiors of the mold cavities on the two sides correspondingly; the top of the liquid injection channel communicates with the interior of the liquid injection sleeve. When the air cylinder piston is cast, air in the cavity can be pumped out through the air suction pipeline, the situation that air is splashed out through the liquid injection sleeve in the molten aluminum pouring process is avoided, potential safety hazards in the operation process are reduced, and the safety of operators in the operation process is guaranteed.

Description

Technical Field

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

[0002] With the continuous progress of modern industry, the market demand for high-performance engines is growing, especially for the cylinder piston, a critical component in the internal combustion engine. As one of the core components of the engine, the cylinder piston directly affects the overall performance and efficiency of the engine. In the processing of the cylinder piston, the cylinder piston is usually processed by metal casting.

[0003] At present, the casting process of cylinder pistons is usually carried out manually. The molten aluminum liquid is poured into the casting mold. The casting is completed by the weight of the filtered water. The flow rate and flow rate of the aluminum liquid are controlled by the experience and skills of the operator to ensure the quality of the casting. However, in the actual operation process, due to the presence of air inside the mold, when the aluminum liquid is poured in, the air will escape through the pouring port, and sometimes even cause the aluminum liquid to splash out, posing certain safety hazards. In addition, during the casting process, if the air in the mold is not effectively discharged, it 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 cylinder piston casting mold.

[0005] The technical solution of the present invention is: a cylinder piston casting mold, including a base, an outer mold cavity, an inner mold, an injection sleeve and an air suction pipe, the top of the base is slidably connected to the outer mold cavity on both sides, the top of the base is connected to the inner mold on both sides, and the outer mold cavity has mold cavities on both sides. When the two outer mold cavities are close to each other, the mold cavities on both sides cooperate with the inner mold to form a molding cavity, one of the outer mold cavities is connected to the top of the injection sleeve, and the sides of the outer mold cavities on both sides are close to each other. Liquid injection channels are opened, and the two sides of the injection channels are respectively connected to the inside of the mold cavities on both sides, and the top of the injection channel is connected to the inside of the liquid injection sleeve, and the tops of the two outer mold cavities are opened with air suction pipes, and the two outer mold cavities are opened with air suction channels on both sides. The air suction pipes are connected to the air suction channel, and the air suction channel is connected to the inside of the mold cavity.

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

[0007] Optionally, a blocking mechanism is also included, which includes a connecting frame, a sliding rod, an elastic member and a blocking plate. Connecting frames are connected to both sides of the air intake channel, a sliding rod is slidably connected between the two connecting frames, a blocking plate is connected to the bottom of the sliding rod, and the blocking plate is located below the air intake channel in an initial state. The blocking plate can move up to block the air intake channel, and an elastic member is connected between the sliding rod and the upper connecting frame.

[0008] Optionally, an ejection mechanism is also included, which includes a push rod, a push rod and an elastic member 2. The push rod is slidably connected in the middle of the inner mold, and the push rod is connected to the bottom of the push rod. The push rod and the push rod are both slidably connected to the base and the inner mold, and the elastic member 2 is connected between the push rod and the inner mold.

[0009] Optionally, a transmission mechanism is also included, which includes a sliding frame and a pushing block. The lower parts of both sides of the push rod are connected to the sliding frame, the sliding frame is slidably connected to the base, and an inclined groove is opened on the sliding frame. The lower parts of the two pushing plates away from each other are connected to the pushing blocks, and the pushing blocks are aligned with the inclined groove.

[0010] Optionally, a cooling mechanism is also included, which includes a drain pipe, a water injection pipe and a water pump. Cooling chambers are opened on both sides of the outer mold cavity. The top of the cooling chamber is connected to a drain pipe. The bottoms of the four cooling chambers are connected by a water injection pipe, and a water pump is installed on the water injection pipe.

[0011] Optionally, a contact switch is also included. The contact switch is installed at the bottom of the lower connecting frame, and the contact switch is electrically connected to the water pump.

[0012] Optionally, a water reservoir is further included, the base is connected to the water reservoir, and the water pump is located in the water reservoir.

[0013] The beneficial effects are as follows: 1. The present invention can extract the air in the cavity through the suction pipe while casting the cylinder piston, thereby preventing air from splashing out through the injection sleeve during the process of pouring molten aluminum, reducing the potential safety hazards during operation, ensuring the safety of operators during operation, and at the same time preventing air from remaining in the cavity and causing pores and defects in the molded piston, thereby ensuring the performance and service life of the product.

[0014] 2. After the cylinder piston is cast, the present invention can push out the formed piston by moving the ejector rod and the push rod upward, without the need for manual labor to take out the formed piston, which is more convenient in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure 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] Fig. 9 It is a schematic structural diagram of the cooling mechanism and water reservoir of the present invention.

[0024] Fig.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 Figure 1-Figure 4As shown, it includes a base 1, an outer mold cavity 2, an inner mold 3, an injection sleeve 4 and an air suction pipe 61. The left and right sides of the top of the base 1 are slidably connected to the outer mold cavity 2, and the front and rear sides of the top of the base 1 are connected to the inner mold 3. The front and rear sides of the outer mold cavity 2 are provided with mold cavities. When the two outer mold cavities 2 are close to each other, the mold cavities on the front and rear sides cooperate with the inner mold 3 to form a molding cavity. Aluminum liquid is injected into the cavity, and the aluminum liquid is formed in the cavity to cast into a cylinder piston. The top of the left outer mold cavity 2 is connected to the injection sleeve 4. The sleeve 4 has liquid injection channels 5 formed on the sides of the outer mold cavities 2 on both sides that are close to each other. The two sides of the liquid injection channels 5 are respectively connected to the interior of the mold cavities on both sides. The top of the liquid injection channels 5 is connected to the inside of the liquid injection sleeve 4. The tops of the two outer mold cavities 2 are provided with air suction pipes 61. The front and rear sides of the two outer mold cavities 2 are provided with air suction channels 62. The air suction pipes 61 are connected to the air suction channels 62. The air suction channels 62 are connected to the interior of the mold cavity. Air suction through the air suction pipes 61 can suck out the air in the mold cavity through the air suction channels 62.

[0028] like Figure 2 and Figure 3 As shown, it also includes an automatic pushing mechanism, which includes a pushing plate 71 and a two-way cylinder 72. The two-way cylinder 72 is installed on the top of the base 1, and the left and right sides of the base 1 are slidably connected with pushing plates 71, and the pushing plates 71 are connected to the outer mold cavity 2. The telescopic rods on both sides of the two-way cylinder 72 are respectively connected to the pushing plates 71 on both sides, so that the operation of the two-way 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 a cylinder piston casting mold is needed, this mold can be used. When in use, first control the telescopic rods of the two-way cylinders 72 on both sides to retract and drive the push plates 71 on both sides to approach each other. The push plates 71 on both sides approaching each other can drive the outer mold cavities 2 on both sides to approach each other, so that the outer mold cavities 2 on both sides are close together. After the outer mold cavities 2 on both sides are close together, they cooperate with the two inner molds 3 to form the cavity. At this time, aluminum liquid can be injected into the injection sleeve 4, and the aluminum liquid enters the outer mold cavities 2 on both sides through the injection channel 5. While injecting aluminum liquid, the suction end of the vacuum pump can be controlled to be connected to the suction pipe 61, and then the vacuum pump can be controlled to pump air. When the pump is pumping air, it can suck away the air in the molding cavity through the suction pipe 61 and the suction channel 62, so that negative pressure is generated inside the molding cavity. While generating negative pressure, aluminum liquid is injected through the injection channel 5 and the injection sleeve 4, so that the aluminum liquid fills the molding cavity. When the aluminum liquid is filled, the air can be pumped away to avoid bubbles in the piston after molding, and gas can be prevented from spraying out from the injection sleeve 4 when pouring the aluminum liquid. In this way, the device can be used to cast the piston, and the air in the cavity can be pumped out during casting to avoid bubbles in the molded piston and avoid splashing of aluminum liquid caused by gas back-spraying.

[0030] like Figure 5 and Figure 6 As shown, a blocking mechanism is also included, which includes a connecting frame 84, a sliding rod 81, an elastic member 82 and a blocking plate 83. The upper and lower sides of the interior of the air intake channel 62 are connected with connecting frames 84, and 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 intake channel 62. A blocking plate 83 is connected to the bottom of the sliding rod 81. The blocking plate 83 is located below the air intake channel 62 in the initial state. The blocking plate 83 moves upward to block the air intake channel 62. An elastic member 82 is connected between the sliding rod 81 and the upper connecting frame 84, and the elastic member 82 is a compression spring.

[0031] In the initial state, the blocking plate 83 is located below the suction channel 62 and will not hinder the suction work of the suction channel 62. As the aluminum liquid inside the cavity gradually increases, the aluminum liquid will contact the blocking plate 83 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 elastic member 82 is compressed. After the blocking plate 83 moves up, it blocks the suction channel 62. At this time, the cavity is also full of aluminum liquid, and the blocking plate 83 can block the suction channel 62 to prevent the aluminum liquid from entering the suction channel 62. In this way, the suction channel 62 can be blocked after the cavity is filled with aluminum liquid to prevent aluminum liquid from entering the suction channel 62.

[0032] like Figure 7 and Figure 8As shown, it also includes an ejection mechanism, which includes a push rod 91, a push rod 92 and an elastic member 93. The push rod 91 is slidably connected in the middle of the inner mold 3, and the push rod 92 is connected to the bottom of the push rod 91. The push rod 91 and the push rod 92 are both slidably connected to the base 1 and the inner mold 3. An elastic member 93 is connected between the push rod 92 and the inner mold 3, and the elastic member 93 is a connecting spring.

[0033] like Figure 7 and Figure 8 As shown, a transmission mechanism is also included, and the transmission mechanism includes a sliding frame 101 and a pushing block 103. The lower parts of the left and right sides of the push rod 92 are connected to the sliding frames 101, and the sliding frames 101 are slidably connected to the base 1. The sliding frames 101 can slide up and down along the base 1. An inclined groove 102 is opened on the sliding frame 101, and the lower parts of the two pushing plates 71 that are away from each other are connected to the pushing blocks 103. The pushing blocks 103 are aligned with the inclined groove 102, so that the pushing blocks 103 can contact and squeeze the inclined groove 102 when moving, thereby driving the inclined groove 102 to move upward.

[0034] After the aluminum liquid inside the cavity is formed, the telescopic rod of the two-way cylinder 72 can be controlled to extend to drive the push plates 71 on both sides to move away from each other. The push plates 71 on both sides move away from each other to control the push blocks 103 on both sides to move away from each other. The push blocks 103 on both sides move away from each other to contact the inclined groove 102, and then squeeze the inclined surface of the inclined groove 102, thereby driving the sliding frames 101 on both sides to move upward. When the sliding frame 101 moves upward, it can drive the push rod 92 to move upward. When the push rod 92 moves upward, it can drive the push rod 91 to move upward. The elastic member 93 is stretched, and the push rod 91 can push out the formed piston when it moves upward. In this way, the piston can be automatically pushed out after the piston is formed, avoiding the need to manually pull out the piston, which is more convenient to operate.

[0035] like Fig. 9 and Fig.10 As shown, a cooling mechanism is also included, which includes a drain pipe 11, a water injection pipe 12 and a water pump 13. Cooling chambers 14 are opened on the front and rear sides of the outer mold cavity 2. The top of the cooling chamber 14 is connected to the drain pipe 11, and the bottoms of the four cooling chambers 14 are connected by water injection pipes 12. Water can be injected into the cooling chamber 14 through the water injection pipes 12, and a water pump 13 is installed on the water injection pipes 12.

[0036] like Fig. 9 and Fig.10 As shown, a contact switch 131 is also included. 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.

[0037] like Fig. 9 and Fig.10 As shown, a water reservoir 15 is also included. The base 1 is connected to the water reservoir 15 , and the water pump 13 is located in the water reservoir 15 , so that the water pump 13 can be operated to extract water in the water pump 13 and inject it into the cooling chamber 14 .

[0038] Initially, water can be added to the water reservoir 15. After the sealing plate 83 moves upward, it can contact the contact switch 131, thereby controlling the water pump 13 to start. At this time, the mold cavity is also filled with molten aluminum. When the water pump 13 is started, it can draw water from the water reservoir 15 and inject it 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, the aluminum liquid can be assisted in cooling and forming, so as to assist in the casting of the piston. In this way, water injection and cooling can be automatically performed after the aluminum liquid is injected, without the need for manual control of water injection, and the operation is more convenient.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder piston casting mold, characterized in that: The invention comprises a base (1), an outer mold cavity (2), an inner mold (3), a liquid injection sleeve (4) and an air suction pipe (61), wherein both sides of the top of the base (1) are slidably connected to the outer mold cavity (2), both sides of the top of the base (1) are connected to the inner mold (3), both sides of the inner part of the outer mold cavity (2) are provided with mold cavities, and when the two outer mold cavities (2) are brought together, the mold cavities on both sides cooperate with the inner mold (3) to form a molding cavity, and the top of one of the outer mold cavities (2) is connected to the liquid injection sleeve (4). ), a liquid injection channel (5) is provided on the side of the two outer mold cavities (2) close to each other, the two sides of the liquid injection channel (5) are respectively connected to the inside of the mold cavities on the two sides, the top of the liquid injection channel (5) is connected to the inside of the liquid injection sleeve (4), the top of the two outer mold cavities (2) are provided with an air suction pipe (61), the two sides of the two outer mold cavities (2) are provided with an air suction channel (62), the air suction pipe (61) is connected to the air suction channel (62), and the air suction channel (62) is connected to the inside of the mold cavity.

2. A cylinder piston casting mold according to claim 1, characterized in that: It also includes an automatic pushing mechanism, which includes a pushing plate (71) and a bidirectional cylinder (72). The bidirectional cylinder (72) is installed on the top of the base (1). Pushing plates (71) are slidably connected on both sides of the base (1). The pushing plates (71) are connected to the outer mold cavity (2). Telescopic rods on both sides of the bidirectional cylinder (72) are respectively connected to the pushing plates (71) on both sides.

3. A cylinder piston casting mold according to claim 1, characterized in that: The invention also comprises a blocking mechanism, which comprises a connecting frame (84), a sliding rod (81), an elastic member (82) and a blocking plate (83); both sides of the air intake channel (62) are connected to the connecting frames (84); a sliding rod (81) is slidably connected between the two connecting frames (84); a blocking plate (83) is connected to the bottom of the sliding rod (81); the blocking plate (83) is located below the air intake channel (62) in an initial state; the blocking plate (83) can block the air intake channel (62) by moving upward; and an elastic member (82) is connected between the sliding rod (81) and the upper connecting frame (84).

4. A cylinder piston casting mold according to claim 1, characterized in that: The inner mold (3) further comprises an ejection mechanism, the ejection mechanism comprising a push rod (91), a push rod (92) and a second elastic member (93); the push rod (91) is slidably connected in the middle of the inner mold (3); the push rod (92) is connected at the bottom of the push rod (91); the push rod (91) and the push rod (92) are both slidably connected to the base (1) and the inner mold (3); and the second elastic member (93) is connected between the push rod (92) and the inner mold (3).

5. A cylinder piston casting mold according to claim 4, characterized in that: The device also includes a transmission mechanism, the transmission mechanism including a sliding frame (101) and a pusher block (103), the lower parts of both sides of the push rod (92) are connected to the sliding frame (101), the sliding frame (101) is slidably connected to the base (1), the sliding frame (101) is provided with an inclined groove (102), the lower parts of the two pusher plates (71) away from each other are connected to the pusher block (103), and the pusher block (103) is aligned with the inclined groove (102).

6. A cylinder piston casting mold according to claim 3, characterized in that: It also includes a cooling mechanism, which includes a drainage 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 top of the cooling chamber (14) is connected to the drainage pipe (11). The bottoms of the four cooling chambers (14) are connected to the water injection pipe (12), and the water pump (13) is installed on the water injection pipe (12).

7. A cylinder piston casting mold according to claim 6, characterized in that: It also includes a contact switch (131), which is installed at the bottom of the lower connecting frame (84), and the contact switch (131) is electrically connected to the water pump (13).

8. A cylinder piston casting mold according to claim 7, characterized in that: It also includes a water reservoir (15), the base (1) is connected to the water reservoir (15), and the water pump (13) is located in the water reservoir (15).

Images