Turnover anti-gravity casting equipment

Abstract

The invention relates to the technical field of metal casting, in particular to overturning anti-gravity casting equipment which comprises an anti-gravity casting mechanism, the anti-gravity casting mechanism comprises a casting mechanism, the casting mechanism comprises a limiting cylinder and a rotating shaft, and the rotating shaft and the limiting cylinder are coaxially arranged and can rotate in the limiting cylinder; the outer wall of the rotating shaft is provided with a mounting groove used for containing a mold, the outer wall of the limiting cylinder is connected with a liquid injection channel, a liquid inlet channel is formed in the rotating shaft, one end of the liquid inlet channel penetrates through the groove bottom of the mounting groove and is used for being in sealed butt joint with a sprue gate of the mold in the mounting groove, and the other end of the liquid inlet channel communicates with the liquid injection channel. The electromagnetic driving structure injects molten metal into the mold through the liquid injection channel and the liquid inlet channel in a pressing mode, the rotating shaft rotates after mold filling of the mold in the mounting groove is completed, the mold is driven to turn over by 180 degrees, and a sprue gate of the mold is made to face upwards till the molten metal in the mold is condensed. Bubbles at the combustion chamber of the engine cylinder cover can be reduced, and the quality of the engine cylinder cover is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, and in particular to a flip anti-gravity casting device. Background Art

[0002] At present, the casting production of engine cylinder heads generally adopts two typical processes, namely low-pressure casting process and counter-gravity casting process. The counter-gravity casting process uses a counter-gravity casting device to press the molten aluminum into the mold from the bottom of the mold pouring port. After the molten aluminum is cooled in the mold, the engine cylinder head can be obtained.

[0003] An existing flip anti-gravity casting device, such as an electromagnetically driven flip anti-gravity casting device disclosed in a Chinese utility model patent with authorization announcement number CN219561390U, mainly includes four parts: an anti-gravity casting mechanism, a flip mechanism 1, a flip mechanism 2, and an electromagnetic drive structure. The flip mechanism 1 and the flip mechanism 2 are respectively located on the left and right sides of the anti-gravity casting mechanism, and the electromagnetic drive structure is arranged on the front side of the anti-gravity casting mechanism. The electromagnetic drive structure consists of an electromagnetic drive pump, an aluminum liquid holding furnace, and a pressure accumulation and insulation chamber. One end of the electromagnetic drive pump is connected to the aluminum liquid holding furnace, and the other end of the electromagnetic drive pump is connected to the pressure accumulation and insulation chamber. The anti-gravity casting mechanism is provided with a gate 1 and a gate 2, and the pressure accumulation and insulation chamber is connected to the gate 1 and the gate 2 on the anti-gravity casting mechanism. The pressure accumulation and insulation chamber is used to pressurize aluminum liquid into the gate 1 and the gate 2, and the gate 1 and the gate 2 are connected to the pouring port of the mold and fill the aluminum liquid into the cavity in the mold. The structures of the flip mechanism 1 and the flip mechanism 2 are the same and are symmetrically arranged on the left and right sides of the anti-gravity casting mechanism. The flip mechanism 1 and the flip mechanism 2 respectively include a flip driving structure for flipping the mold 180°. During operation, the mold is first flipped 180° in the flip mechanism 1, so that the combustion chamber of the mold is upward and the pouring port is downward, and then the flip mechanism 1 transfers the mold to the anti-gravity casting mechanism. The pouring port of the mold is sealed and docked with the pouring port 1 and the pouring port 2 respectively, and the electromagnetic drive pump is started. The pressure storage and insulation chamber receives the aluminum liquid to maintain the aluminum liquid injected by the furnace pressure, and then the aluminum liquid is pressurized into the mold cavity through the pouring port 1 and the pouring port 2. After the aluminum liquid in the mold solidifies, the mold is transferred to the flip mechanism 2. After the flip mechanism 2 flips 180°, the mold cavity is cleaned, the core is lowered, and the mold is closed to continue casting the next workpiece.

[0004] In the prior art, the engine cylinder head produced by the anti-gravity casting device has a pouring port downward when the anti-gravity casting mechanism injects molten aluminum, the pouring port of the engine cylinder head faces downward, the combustion chamber is located above the pouring port, and the molten aluminum is pressed upward into the mold, which can solve the problem of the coarse structure of the pouring port in the combustion chamber. However, when the anti-gravity casting device injects molten aluminum, the combustion chamber of the engine cylinder head is located above the pouring port, which easily causes bubbles to gather in the combustion chamber, reducing the strength of the combustion chamber, and the combustion chamber of the engine cylinder head is an important part of the entire part, therefore, it has a great impact on the quality of the entire engine cylinder head. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention proposes a flip anti-gravity casting device to solve the technical problem in the prior art that bubbles are easily accumulated in the combustion chamber, thereby reducing the strength of the combustion chamber.

[0006] A flip anti-gravity casting device of the present invention adopts the following technical solution: A flipping anti-gravity casting device, comprising an anti-gravity casting mechanism, a flipping mechanism, and an electromagnetic driving structure, wherein the electromagnetic driving structure is located at the front side of the anti-gravity casting mechanism and is used to press metal liquid into a mold on the anti-gravity casting mechanism, and the flipping mechanism is used to flip the mold, the anti-gravity casting mechanism comprises a casting mechanism, the casting mechanism comprises a limiting cylinder, a rotating shaft is arranged in the limiting cylinder, the rotating shaft is coaxially arranged with the limiting cylinder and can rotate in the limiting cylinder, an installation groove for accommodating the mold is provided on the outer wall of the rotating shaft, and the upper side of the limiting cylinder A window is provided for allowing the mold to be placed in the mounting groove, the outer wall of the limiting cylinder is connected to a liquid injection channel, a liquid inlet channel is opened in the rotating shaft, one end of the liquid inlet channel passes through the bottom of the mounting groove, and is used to seal and dock with the pouring port of the mold in the mounting groove, the other end of the liquid inlet channel is communicated with the liquid injection channel, the electromagnetic drive structure pressurizes molten metal into the mold through the liquid injection channel and the liquid inlet channel, the rotating shaft rotates after the mold in the mounting groove is filled, driving the mold to flip 180°, so that the pouring port of the mold faces upward until the molten metal in the mold condenses.

[0007] Furthermore, an arcuate flow channel is formed between the outer wall of the rotating shaft and the inner wall of the limiting cylinder, a first sealing block is fixed on the inner wall of the limiting cylinder at one end of the arcuate flow channel, the first sealing block is in sealing and sliding cooperation with the outer wall of the rotating shaft, a second sealing block is fixed on the outer wall of the rotating shaft, the second sealing block moves in the arcuate flow channel as the rotating shaft rotates, one end of the injection channel is communicated with an end of the arcuate flow channel close to the first sealing block, an end of the liquid inlet channel away from the mounting groove is located on the side of the second sealing block facing the first sealing block, and is communicated with the arcuate flow channel, the rotating shaft has a first position and a second position on the rotating path, and when the rotating shaft is in the first position position, the opening of the mounting groove faces upward, the second sealing block is at the position where the arc flow channel is connected to the injection channel, the end of the inlet channel away from the mounting groove is connected to the end of the arc flow channel close to the first sealing block, the electromagnetic drive structure injects molten metal into the mold through the injection channel and the inlet channel, and when the mold is filled, the rotating shaft rotates from the first position to the second position, and the second sealing block moves in the arc flow channel in the direction away from the first sealing block until the rotating shaft rotates 180°, the opening of the mounting groove faces downward, the pouring port of the mold in the mounting groove faces upward, and the second sealing block is at the end of the arc flow channel away from the first sealing block.

[0008] Furthermore, an air inlet channel is opened in the rotating shaft, and the air inlet channel is connected with the liquid inlet channel. The air inlet channel and the liquid inlet channel form a three-way structure. When the rotating shaft is in the second position, the air inlet channel transports gas to the pouring port of the mold to make the residual molten metal in the liquid inlet channel flow out in the opposite direction through the arc flow channel and the injection channel.

[0009] Furthermore, a one-way valve is provided at the position where the air inlet channel and the liquid inlet channel are connected, and the one-way valve is used to prevent the molten metal from entering the air inlet channel.

[0010] Furthermore, the air inlet channel extends along the axial direction of the rotating shaft, and the liquid inlet channel is L-shaped, including a vertical section and a horizontal section. The vertical section extends along the radial direction of the rotating shaft, one end of the vertical section is connected to one end of the horizontal section, the other end of the vertical section is connected to the bottom of the mounting groove, and the other end of the horizontal section is connected to the arc flow channel, and the air inlet channel is connected to the connecting position of the vertical section and the horizontal section.

[0011] Furthermore, an air intake pipe is connected to one end of the air intake channel away from the liquid inlet channel, and the air intake pipe is a bent pipe that can be bent and deformed. There is a gap between the axial ends of the rotating shaft and the inner wall of the limiting cylinder. One end of the air intake pipe extends into the gap and is connected to the end of the air intake channel away from the liquid inlet channel.

[0012] Furthermore, the casting mechanism comprises a support frame, and the limiting cylinder is fixed on the support frame along the horizontal direction.

[0013] Furthermore, the support frame includes a top plate, a bottom plate and a vertical plate connected between the top plate and the bottom plate, and a plurality of vertical plates are evenly spaced along the axial direction of the limiting cylinder.

[0014] Furthermore, the periphery of the injection channel is coated with a heat-insulating layer.

[0015] Furthermore, two flipping mechanisms are provided, namely flipping mechanism 1 and flipping mechanism 2, and flipping mechanism 1 and flipping mechanism 2 are respectively located on the left and right sides of the anti-gravity casting mechanism.

[0016] The beneficial effects of the present invention are as follows: a flip anti-gravity casting device of the present invention, by arranging a casting mechanism in the anti-gravity casting mechanism that can drive the mold to flip 180°, after the mold is injected with molten metal with the pouring mouth downward, the rotating shaft in the casting mechanism drives the mold to flip 180°, so that the pouring mouth of the mold faces upward, and during the flipping process, the bubbles in the molten metal in the mold gather upward toward the pouring mouth position. For the cast engine cylinder head parts, this casting method of the present invention can reduce the bubbles in the combustion chamber part of the engine cylinder head, ensure the strength of the combustion chamber part of the engine cylinder head, and then ensure the quality of the entire engine cylinder head.

[0017] Furthermore, an arc-shaped flow channel, a first sealing block and a second sealing block are arranged between the rotating shaft and the limiting cylinder, and an air intake channel is arranged in the rotating shaft. Before and after the rotating shaft turns the mold over, the liquid inlet channels at the first position and the second position are respectively connected to different parts of the arc-shaped flow channel, that is, the length of the arc-shaped flow channel connected in series between the liquid inlet channel and the injection channel is changed. When the rotating shaft is in the second position, the air intake channel transports gas to the pouring port of the mold, which not only pushes the residual molten metal in the liquid inlet channel out in reverse, but also forms a negative pressure at the pouring port of the mold under the action of air pressure, thereby promoting the bubbles at the bottom of the mold, i.e., the combustion chamber of the engine cylinder head, to move to the pouring port position above. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0019] Figure 1 It is a three-dimensional schematic diagram of an embodiment of a flip anti-gravity casting device of the present invention; Figure 2It is a three-dimensional schematic diagram of a casting mechanism in an embodiment of a flip anti-gravity casting device of the present invention; Figure 3 A top view of a casting mechanism in an embodiment of a flip anti-gravity casting device of the present invention; Figure 4 for Figure 3 Middle AA section view; Figure 5 for Figure 3 Middle BB section view; Figure 6 for Figure 5 Another state diagram of ; In the figure: 100, casting platform; 101, walking bracket; 102, electromagnetic drive structure; 103, turning mechanism; 104, electric control cabinet; 105, pressure storage and insulation chamber; 200, anti-gravity casting mechanism; 201, support frame; 202, limit cylinder; 2021, first sealing block; 203, rotating shaft; 2031, second sealing block; 204, air inlet pipe; 2041, air inlet channel; 2042, one-way valve; 205, mold; 2051, cavity; 2052, pouring gate; 206, liquid injection port; 207, insulation layer; 208, liquid injection channel; 209, arc flow channel; 210, liquid inlet channel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] An embodiment of a flip anti-gravity casting device of the present invention is as follows Figures 1 to 6As shown, in this embodiment, the flip anti-gravity casting equipment is specifically used for producing engine cylinder heads, and the engine cylinder heads include a combustion chamber and a nozzle arranged on the combustion chamber. The engine cylinder heads are existing parts, and the specific structure is not described in detail. The flip anti-gravity casting equipment of the present invention includes a casting platform 100, and the casting platform 100 is provided with a walking bracket 101 for workers to walk on. The casting platform 100 is also provided with an anti-gravity casting mechanism 200, a flipping mechanism 103, an electromagnetic drive structure 102 and an electric control cabinet 104. The anti-gravity casting mechanism 200 is used to place a mold 205, and the electromagnetic drive structure 102 is located at the front side of the anti-gravity casting mechanism 200, and is used to pressurize molten metal into the mold 205 located on the anti-gravity casting mechanism 200 through the anti-gravity casting mechanism 200. In this embodiment, the molten metal is aluminum liquid. The flip mechanism 103 is used to flip the mold 205. In this embodiment, two flip mechanisms 103 are provided, namely flip mechanism 1 and flip mechanism 2, which are respectively located on the left and right sides of the anti-gravity casting mechanism 200. The electromagnetic drive structure 102 is composed of an electromagnetic drive pump, an aluminum liquid holding furnace, and a pressure storage and insulation chamber 105. One end of the electromagnetic drive pump is connected to the aluminum liquid holding furnace, and the other end of the electromagnetic drive pump is connected to the pressure storage and insulation chamber 105. The pressure storage and insulation chamber 105 is used to pressurize aluminum liquid into the anti-gravity casting mechanism 200. When the flipping anti-gravity casting equipment is working, the mold 205 is first flipped 180° in the flipping mechanism 1, so that the part of the mold 205 corresponding to the combustion chamber of the engine cylinder head is facing upward, and the pouring port 2052 of the mold 205 is facing downward, and then the flipping mechanism 1 transfers the mold 205 to the anti-gravity casting mechanism 200, and the mold 205 maintains the posture with the pouring port 2052 facing downward, and then the electromagnetic drive pump is started, and the pressure accumulation and insulation chamber 105 receives the aluminum liquid to maintain the aluminum liquid injected from the furnace pressure, and then the aluminum liquid is pressurized into the mold 205 on the anti-gravity casting mechanism 200. When the aluminum liquid in the mold 205 solidifies, the mold 205 is transferred to the flipping mechanism 2. After being flipped 180° by the flipping mechanism 2, the mold cavity is cleaned, the core is lowered, and the mold is closed to continue casting the next workpiece. It should be noted here that the improvement of the present invention lies in the anti-gravity casting mechanism 200, while the casting platform 100, the flipping mechanism 103, and the electromagnetic drive structure 102 are all existing known structures and are not closely related to the improvements of the present invention, so they will not be described in detail here.

[0022] In the present invention, the anti-gravity casting mechanism 200 includes a casting mechanism, which includes a support frame 201 and a limiting cylinder 202 fixed on the support frame 201 in a horizontal direction, wherein a rotating shaft 203 is arranged coaxially with the limiting cylinder 202, and both ends of the rotating shaft 203 are respectively supported by rotation at both ends of the limiting cylinder 202, so that the rotating shaft 203 can rotate in the limiting cylinder 202. In this embodiment, one end of the rotating shaft 203 is connected to a rotating drive mechanism (not shown in the figure), and the rotating drive mechanism is used to drive the rotating shaft 203 to rotate. An installation groove for accommodating a mold 205 is provided on the outer wall of the rotating shaft 203, and a window for placing the mold 205 in the installation groove is provided on the upper side of the limiting cylinder 202. After the mold 205 is installed in the installation groove, the rotating shaft 203 rotates to drive the mold 205 in the installation groove to flip. The shape of the mold 205 in the present invention is a cubic shape with a bottom adapted to the mounting groove, and a circular arc surface with a top adapted to the inner wall of the limiting cylinder 202 .

[0023] The outer wall of the limiting cylinder 202 is connected with a liquid injection channel 208, one end of which constitutes a liquid injection port 206, which is in communication with the pressure storage chamber 105 to receive the aluminum liquid in the pressure storage chamber 105. A liquid inlet channel 210 is provided in the rotating shaft 203, one end of which passes through the bottom of the installation groove and constitutes a pouring port of the anti-gravity casting mechanism 200, so as to be sealed and docked with the pouring port 2052 of the mold 205 in the installation groove. The other end of the liquid inlet channel 210 is connected with the injection channel 208. When working, the electromagnetic drive structure 102 pressurizes aluminum liquid into the mold cavity 2051 of the mold 205 through the injection channel 208 and the liquid inlet channel 210. The rotating shaft 203 rotates after the mold 205 in the mounting groove is filled, driving the mold 205 to flip 180 degrees, so that the pouring port 2052 of the mold 205 faces upward until the metal liquid in the mold 205 condenses. The present invention rotates the rotating shaft 203, after the mold 205 is filled and before the aluminum liquid in the mold 205 solidifies, the mold 205 is flipped 180 degrees, so that the combustion chamber of the engine cylinder head is located below. During the flipping process, the air holes at the combustion chamber position of the engine cylinder head are moved upward, and the mold 205 is discharged from the pouring port 2052 of the mold 205, so that the strength of the combustion chamber of the engine cylinder head can be ensured, and then the quality of the entire engine cylinder head can be ensured.

[0024] In this embodiment, an arc-shaped flow channel 209 is formed between the outer wall of the rotating shaft 203 and the inner wall of the limiting cylinder 202. A first sealing block 2021 is fixed on the inner wall of the limiting cylinder 202 at one end of the arc-shaped flow channel 209. The first sealing block 2021 is in sealing and sliding cooperation with the outer wall of the rotating shaft 203. A second sealing block 2031 is fixed on the outer wall of the rotating shaft 203. The second sealing block 2031 moves in the arc-shaped flow channel 209 as the rotating shaft 203 rotates. One end of the injection channel 208 is connected to an end of the arc-shaped flow channel 209 close to the first sealing block 2021. An end of the liquid inlet channel 210 away from the mounting groove is located on the side of the second sealing block 2031 facing the first sealing block 2021 and is connected to the arc-shaped flow channel 209. The rotating shaft 203 has a first position and a second position on the rotating path. When the rotating shaft 203 is in the first position, as shown in FIG. Figure 5 As shown, the opening of the mounting groove faces upward, the second sealing block 2031 is located at the position where the arc flow channel 209 is connected to the injection channel 208, the end of the inlet channel 210 away from the mounting groove is connected to the end of the arc flow channel 209 close to the first sealing block 2021, and the electromagnetic drive structure 102 injects the metal liquid into the mold 205 through the injection channel 208 and the inlet channel 210. When the mold 205 is filled, the rotating shaft 203 rotates from the first position to the second position, and the second sealing block 2031 moves in the arc flow channel 209 in the direction away from the first sealing block 2021 until the rotating shaft 203 rotates 180°. At this time, Figure 6 As shown, the opening of the installation groove faces downward, the pouring port 2052 of the mold 205 in the installation groove faces upward, and the second sealing block 2031 is located at the end of the arc-shaped flow channel 209 away from the first sealing block 2021 .

[0025] In this embodiment, an air inlet channel 2041 is provided in the rotating shaft 203, and the air inlet channel 2041 is connected to the liquid inlet channel 210, and the air inlet channel 2041 and the liquid inlet channel 210 form a three-way structure, and the end of the air inlet channel 2041 away from the liquid inlet channel 210 is connected to the air inlet pipe 204, and the air inlet pipe 204 is a curved pipe that can be bent and deformed, and there is a gap between the axial ends of the rotating shaft 203 and the inner wall of the limiting cylinder 202, and one end of the air inlet pipe 204 extends into the gap and is connected to the end of the air inlet channel 2041 away from the liquid inlet channel 210, and the other end of the air inlet pipe 204 is connected to an air pump (not shown in the figure). When the rotating shaft 203 is in the second position, the air pump delivers gas to the pouring port 2052 of the mold 205 through the air inlet channel 2041, so that the residual molten metal in the liquid inlet channel 210 flows out in the opposite direction through the arc flow channel 209 and the injection channel 208. When the air inlet channel 2041 delivers gas to the pouring port 2052 of the mold 205, the electromagnetic drive structure 102 has stopped injecting aluminum liquid into the mold 205. Under the action of air pressure, the aluminum liquid remaining in the liquid inlet channel 210 is pushed out in the opposite direction to prevent the aluminum liquid from solidifying in the liquid inlet channel 210 and the arc-shaped flow channel 209. At the same time, under the action of air pressure, negative pressure is formed at the pouring port 2052 of the mold 205, which can promote the upward movement of bubbles at the combustion chamber position of the engine cylinder head.

[0026] In this embodiment, a one-way valve 2042 is provided at the position where the air inlet channel 2041 and the liquid inlet channel 210 are connected. The one-way valve 2042 can allow gas to enter the liquid inlet channel 210 and prevent aluminum liquid from entering the air inlet channel 2041.

[0027] In this embodiment, the air inlet channel 2041 extends along the axial direction of the rotating shaft 203, and the liquid inlet channel 210 is L-shaped, including a vertical section and a horizontal section. The vertical section extends radially along the rotating shaft 203, one end of the vertical section is connected to one end of the horizontal section, the other end of the vertical section is connected to the bottom of the mounting groove, and the other end of the horizontal section is connected to the arc flow channel 209, and the air inlet channel 2041 is connected to the connecting position of the vertical section and the horizontal section.

[0028] In this embodiment, the support frame 201 includes a top plate, a bottom plate and a vertical plate connected between the top plate and the bottom plate, and a plurality of vertical plates are evenly spaced along the axial direction of the limiting cylinder 202 to ensure the stability of the limiting cylinder 202. In this embodiment, in order to reduce the temperature loss of the aluminum liquid, the periphery of the injection channel 208 is coated with a thermal insulation layer 207.

[0029] When the flipping anti-gravity casting device of the present invention is working, the staff installs the mold 205 on the flipping mechanism 1, and the flipping mechanism 1 flips the mold 205 180 degrees, so that the pouring port 2052 of the mold 205 faces downward, and then the flipping mechanism 1 transfers the mold 205 to the installation groove of the anti-gravity casting mechanism 200, and the mold 205 maintains the posture of the pouring port 2052 facing downward, such as Figure 5 In the state shown, the rotating shaft 203 is in the first position, the second sealing block 2031 is at the position where the arc flow channel 209 is connected to the injection channel 208, the opening of the mounting groove is facing upward, the pouring port 2052 of the mold 205 is downwardly connected to the pouring port seal on the bottom of the mounting groove, and the end of the inlet channel 210 away from the mounting groove is connected to the end of the arc flow channel 209 close to the first sealing block 2021. Then the electromagnetic drive pump is started, and the pressure storage and insulation chamber 105 receives the aluminum liquid injected from the aluminum liquid holding furnace, and then the aluminum liquid is pressurized into the mold 205 through the injection channel 208 and the inlet channel 210. When the mold 205 is filled, that is, the cavity 2051 is filled with aluminum liquid, the electromagnetic drive structure 102 stops injecting aluminum liquid into the mold 205. The rotary drive mechanism drives the rotating shaft 203 to rotate from the first position to the second position, and the second sealing block 2031 moves in the arc flow channel 209 in a direction away from the first sealing block 2021 until the rotating shaft 203 rotates 180°. Figure 6 As shown, the rotating shaft 203 drives the mold 205 in the installation groove to flip 180°, so that the opening of the installation groove faces downward, the pouring port 2052 of the mold 205 in the installation groove faces upward, and the second sealing block 2031 is at the end of the arc flow channel 209 away from the first sealing block 2021. Since the mold 205 flips 180°, it will be squeezed by gravity to discharge the bubbles in the combustion chamber of the engine cylinder head upward. Then the air pump is started to transport gas to the pouring port 2052 of the mold 205 through the intake pipe 204 and the intake channel 2041. Under the action of air pressure, the aluminum liquid remaining in the liquid inlet channel 210 will be pushed out in the opposite direction to prevent the aluminum liquid from solidifying in the liquid inlet channel 210 and the arc flow channel 209. At the same time, under the action of air pressure, negative pressure will be formed at the pouring port 2052 of the mold 205, which can promote the bubbles in the combustion chamber of the engine cylinder head to move upward. After the aluminum liquid in the mold 205 solidifies, the mold 205 is transferred to the flip mechanism 2, and the flip mechanism 2 flips the mold 205 180 degrees, and then cleans the mold cavity 2051, inserts the core, and closes the mold to continue casting the next engine cylinder head.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flipping anti-gravity casting device, comprising an anti-gravity casting mechanism (200), a flipping mechanism (103), and an electromagnetic drive structure (102), wherein the electromagnetic drive structure (102) is located at the front side of the anti-gravity casting mechanism (200) and is used to pressurize molten metal into a mold (205) located on the anti-gravity casting mechanism (200), and the flipping mechanism (103) is used to flip the mold (205), characterized in that: The anti-gravity casting mechanism (200) comprises a casting mechanism, the casting mechanism comprising a limiting cylinder (202), a rotating shaft (203) being arranged in the limiting cylinder (202), the rotating shaft (203) being coaxially arranged with the limiting cylinder (202) and being rotatable in the limiting cylinder (202), a mounting groove for accommodating a mold (205) being provided on the outer wall of the rotating shaft (203), a window for allowing the mold (205) to be placed in the mounting groove being provided on the upper side of the limiting cylinder (202), a liquid injection channel (208) being connected to the outer wall of the limiting cylinder (202), and a liquid inlet channel (210) being provided in the rotating shaft (203), One end of the liquid inlet channel (210) passes through the bottom of the mounting groove and is used to seal and dock with the pouring port (2052) of the mold (205) in the mounting groove; the other end of the liquid inlet channel (210) is in communication with the injection channel (208); the electromagnetic drive structure (102) presses the metal liquid into the mold (205) through the injection channel (208) and the liquid inlet channel (210); the rotating shaft (203) rotates after the mold (205) in the mounting groove is filled, driving the mold (205) to flip 180 degrees, so that the pouring port (2052) of the mold (205) faces upward until the metal liquid in the mold (205) condenses.

2. The inversion anti-gravity casting equipment according to claim 1 is characterized in that: An arcuate flow channel (209) is formed between the outer wall of the rotating shaft (203) and the inner wall of the limiting cylinder (202); a first sealing block (2021) is fixed on the inner wall of the limiting cylinder (202) at one end of the arcuate flow channel (209); the first sealing block (2021) is in sealing and sliding cooperation with the outer wall of the rotating shaft (203); a second sealing block (2031) is fixed on the outer wall of the rotating shaft (203); the second sealing block (2031) is moved along with the rotating shaft (2 03) rotates and moves in the arc flow channel (209), one end of the injection channel (208) is connected to an end of the arc flow channel (209) close to the first sealing block (2021), the end of the liquid inlet channel (210) away from the mounting groove is located on the side of the second sealing block (2031) facing the first sealing block (2021), and is connected to the arc flow channel (209), the rotating shaft (203) has a first position and a second position on the rotating path, when the rotating shaft (203) is in the first position, When the first sealing block (2021) is in the position, the opening of the mounting groove faces upward, the second sealing block (2031) is located at the position where the arc-shaped flow channel (209) is connected to the injection channel (208), the end of the inlet channel (210) away from the mounting groove is connected to the end of the arc-shaped flow channel (209) close to the first sealing block (221), and the electromagnetic drive structure (102) injects metal liquid into the mold (205) through the injection channel (208) and the inlet channel (210). When the mold (205) is filled, Afterwards, the rotating shaft (203) rotates from the first position to the second position, and the second sealing block (2031) moves in the arc-shaped flow channel (209) in a direction away from the first sealing block (2021), until the rotating shaft (203) rotates 180 degrees, the opening of the installation groove faces downward, the pouring port (2052) of the mold (205) in the installation groove faces upward, and the second sealing block (2031) is located at the end of the arc-shaped flow channel (209) away from the first sealing block (2021).

3. The inversion anti-gravity casting equipment according to claim 2 is characterized in that: An air inlet channel (2041) is provided in the rotating shaft (203), the air inlet channel (2041) is communicated with the liquid inlet channel (210), the air inlet channel (2041) and the liquid inlet channel (210) form a three-way structure, and the air inlet channel (2041) delivers gas to the pouring port (2052) of the mold (205) when the rotating shaft (203) is in the second position, so that the metal liquid remaining in the liquid inlet channel (210) flows out in the opposite direction through the arc-shaped flow channel (209) and the injection channel (208).

4. The inversion anti-gravity casting equipment according to claim 3 is characterized in that: A one-way valve (2042) is provided at the position where the air inlet channel (2041) and the liquid inlet channel (210) are connected, and the one-way valve (2042) is used to prevent the metal liquid from entering the air inlet channel (2041).

5. The inversion anti-gravity casting equipment according to claim 4 is characterized in that: The air inlet channel (2041) extends along the axial direction of the rotating shaft (203); the liquid inlet channel (210) is L-shaped and comprises a vertical section and a horizontal section; the vertical section extends along the radial direction of the rotating shaft (203); one end of the vertical section is connected to one end of the horizontal section; the other end of the vertical section is connected to the bottom of the mounting groove; the other end of the horizontal section is connected to the arc-shaped flow channel (209); and the air inlet channel (2041) is connected to the connection position between the vertical section and the horizontal section.

6. The inversion anti-gravity casting equipment according to claim 5, characterized in that: An end of the air inlet channel (2041) away from the liquid inlet channel (210) is connected to an air inlet pipe (204); the air inlet pipe (204) is a curved pipe that can be bent and deformed; a gap is provided between the axial ends of the rotating shaft (203) and the inner wall of the limiting cylinder (202); one end of the air inlet pipe (204) extends into the gap and is connected to an end of the air inlet channel (2041) away from the liquid inlet channel (210).

7. The inversion anti-gravity casting equipment according to any one of claims 1 to 6, characterized in that: The casting mechanism comprises a support frame (201), and the limiting cylinder (202) is fixed on the support frame (201) in a horizontal direction.

8. The inversion anti-gravity casting equipment according to claim 7 is characterized in that: The support frame (201) comprises a top plate, a bottom plate and a vertical plate connected between the top plate and the bottom plate, and a plurality of vertical plates are evenly spaced and arranged along the axial direction of the limiting cylinder (202).

9. The inversion anti-gravity casting equipment according to any one of claims 1 to 6, characterized in that: The periphery of the liquid injection channel (208) is coated with a thermal insulation layer (207).

10. The inversion anti-gravity casting equipment according to any one of claims 1 to 6, characterized in that: The flipping mechanisms (103) are provided in two parts, namely flipping mechanism 1 and flipping mechanism 2. The flipping mechanism 1 and flipping mechanism 2 are respectively located on the left and right sides of the anti-gravity casting mechanism (200).

Images