A low-pressure casting machine for producing metal components of a cold slag machine

Abstract

The present invention relates to the technical field of casting machines, and in particular to a low-pressure casting machine for producing metal components of a cold slag machine, comprising: a double-station casting frame, two symmetrically arranged casting devices and a blanking device, the casting device comprising an upper mold shell and an upper template, the upper template being arranged inside the upper mold shell, and a cooling space being provided between the upper template and the upper mold shell; an air guide component being provided inside the cooling space, a sliding opening being provided in the middle of the upper template, an ejection component being provided inside the sliding opening, the ejection component being connected to the air guide component; the ejection component comprising a telescopic tube, an ejection block, a telescopic member, an adjustment sheet and a plurality of push bars, the ejection block being slidably arranged inside the sliding opening, and an adjustment groove being provided inside the sliding opening, the telescopic tube being fixedly connected between the air guide component and the sliding opening. The present invention can clean the position of the air holes during the process of ventilation and demoulding, thereby avoiding blockage of the air holes and ensuring the efficiency of demoulding.

Description

Technical Field

[0001] The present invention relates to the technical field of casting machines, in particular to a low-pressure casting machine for producing metal components of a slag cooler. Background Art

[0002] Components such as the housing and heat sink in the slag cooler are cast in one piece using a casting machine. These thinner metal components are usually made by low-pressure casting, which is a process of injecting liquid metal into a mold at a relatively low pressure. Low-pressure casting has the advantages of excellent casting quality, high material utilization, and suitability for complex thin-walled parts.

[0003] Patent publication number CN102764874B discloses a dual-station low-pressure casting machine comprising a frame with a centrally located platform on which two sets of wheel hub molds are arranged side by side. Below the platform, a holding furnace is installed. The furnace is connected to the cavities of the two wheel hub molds via two riser pipes and gates on the two sets of wheel hub molds. Above the wheel hub molds, the frame is equipped with an upper mold lifting mechanism that raises the upper mold and a demolding mechanism that separates the upper mold and wheel hub. Furthermore, a material receiving mechanism is provided on each side of the two wheel hub molds to receive the wheel hubs after demolding. This device boasts high casting efficiency, energy savings, and reduced costs.

[0004] In order to quickly demold, existing casting machines usually choose ventilation demolding. However, in actual use, molten metal may penetrate into the vent holes, and the solidification of the molten metal may cause the vent holes to be blocked, affecting the normal movement of gas and thus reducing the demolding speed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that molten metal may penetrate into the vent holes and solidify at high temperatures to cause blockage, affecting the normal movement of gas and thus reducing the demoulding speed. A low-pressure casting machine for producing metal components of a cold slag machine is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A low-pressure casting machine for producing metal components of a slag cooler, comprising: a double-station casting frame, two symmetrically arranged casting devices and a blanking device, wherein the casting device comprises an upper mold shell and an upper platen, wherein the upper platen is arranged inside the upper mold shell, and a cooling space is provided between the upper platen and the upper mold shell;

[0008] An air guide assembly is provided inside the cooling space, a sliding opening is provided in the middle of the upper template, an ejection assembly is provided inside the sliding opening, the ejection assembly is communicated with the air guide assembly, and the air guide assembly is used to drive the ejection assembly to move up and down;

[0009] The ejection assembly includes a telescopic tube, an ejection block, a telescopic member, an adjustment sheet and a plurality of push strips. The ejection block is slidably arranged inside the sliding port and is provided with an adjustment groove inside. The telescopic tube is fixedly connected between the air guide assembly and the sliding port. The telescopic member is fixedly connected to the bottom of the air guide assembly. The adjustment sheet is fixedly connected to the bottom end of the telescopic member and is provided inside the adjustment groove. A plurality of inclined air holes connected to the adjustment groove are annularly opened on the side of the bottom of the ejection block. The plurality of push strips are annularly fixedly connected to the side of the adjustment sheet and are respectively slidably arranged inside the plurality of air holes.

[0010] Preferably, the upper end of the adjustment groove is an opening, and the opening is set to be an inverted truncated cone shape, the adjustment piece is disc-shaped, and the diameter of the adjustment piece is larger than the diameter of the upper end of the opening and smaller than the diameter of the lower end of the opening.

[0011] Preferably, a limit ring is provided in the middle of the sliding opening, the ejection block is an I-shaped block, and the limit ring is provided inside the ring groove in the middle of the ejection block, and the limit ring is used to limit the upward and downward movement of the ejection block.

[0012] Preferably, the push bar is made of elastic metal material, and a protrusion is provided at the end thereof, and the diameter of the protrusion is smaller than the diameter of the pore.

[0013] Preferably, the air guide assembly includes a spiral air guide tube, a connecting end and an air guide end. The spiral air guide tube is arranged inside the cooling space, the air guide end is arranged at the middle end of the spiral air guide tube, and multiple air ports are arranged at the bottom. The connecting end is fixedly connected to the external end of the spiral air guide tube.

[0014] Preferably, a fan assembly is provided between the two symmetrically arranged air guide assemblies, and the fan assembly includes a connecting pipe, an air guide fan and a refrigeration module. The air guide fan is fixedly installed in the middle of the double-station casting frame. The connecting pipe is a three-head pipe, and its two ends are respectively connected to the two connecting ends, and the other end is fixedly connected to the air guide fan. The refrigeration module is installed on the upper end of the air guide fan.

[0015] Preferably, the upper template is symmetrically provided with two movable openings, and two movable blocks are respectively provided inside the two movable openings, and the two movable blocks move up and down to separate the metal component and the upper template.

[0016] Preferably, a movable component is provided between the movable block and the upper template, the movable component is used to drive the movable block to move up and down, and the movable component is connected to the air guide end.

[0017] Preferably, the movable component includes an upper plate, two airbags and a connecting tube. The upper plate is a T-shaped plate and is fixedly connected to the upper end of the movable block. The two airbags are respectively fixedly connected to the two sides of the bottom surface of the upper plate and are fixedly connected to the upper surface of the upper template. The connecting tube is an F-shaped pipe fitting, and its two parallel ends are respectively connected to the two airbags, and the other end is connected to the air guide end.

[0018] Preferably, the unloading device includes a rotating seat, a control arm and a material placement tray, the rotating seat is fixedly installed in the middle of the double-station casting frame, the control arm is fixedly installed on the upper end of the rotating seat, and the material placement tray is fixedly installed at the end of the control arm.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When the casting is completed and needs to be demoulded, the telescopic part is powered off and the adjusting piece is pushed down by the ejected gas. During the downward movement, the pushing bar is driven to move, thereby impacting and pushing the metal agglomerates that may exist inside the pores, thus avoiding blockage of the pores and ensuring the normal movement of gas.

[0021] After the casting is completed, gas is introduced into the adjusting groove to drive the adjusting plate to move downward. The gas introduced into the adjusting groove squeezes the ejector block, thereby ejecting the ejector block from the inside of the sliding port. At the same time, the casting is ejected downward through the ejector block. At this time, a gap is formed between the casting and the upper template. A large amount of gas is then introduced into the gap through the air holes set on the side, forming a pushing air film, thereby quickly separating the casting from the mold.

[0022] By moving the adjusting piece up and down, it has a sealing effect during the upward movement, and plays a role in cleaning the blocked pores during the downward movement. According to the adjustment of the use status, a single structure can have different effects in different states;

[0023] The installed refrigeration module will process the compressed gas to be introduced into the cooling chamber at low temperature, and the spiral air duct will lower the temperature inside the cooling space, thus accelerating the cooling effect.

[0024] Low-temperature compressed gas is introduced into the air guide end, and the compressed gas is transferred to the inside of the airbag through the connecting pipe, thereby expanding the airbag. The low-temperature compressed gas quickly cools the position of the movable block, reducing the adhesion of the casting at the position of the movable block. At the same time, during the process of lifting the upper plate, the movable block is driven to move upward, separating the movable block from the casting, accelerating the formation of the demoulding air film, and ensuring the rapid demoulding of the casting;

[0025] The state of the movable component can be changed by adjusting the positive and negative pressure of the air guide component. Under negative pressure, the movable block and the upper mold plate can be fixed. Under positive pressure, the movable block and the upper mold plate can be gradually separated to ensure the rapid demoulding of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front structural schematic diagram of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the back structure of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of an ejector assembly of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the expanded structure of an ejector assembly of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of deformation adjustment of an ejector assembly of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0031] Figure 6 This is a schematic structural diagram of an air guide component of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0032] Figure 7 This is a front structural schematic diagram of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0033] Figure 8 This is a schematic structural diagram of a fan assembly of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0034] Figure 9 This is a schematic structural diagram of the movable components of a low-pressure casting machine for producing metal components of a slag cooler proposed by the present invention;

[0035] Figure 10 This is a structural schematic diagram of a blanking device of a low-pressure casting machine for producing metal components of a cold slag machine proposed by the present invention.

[0036] In the figure: 1. Double-station casting frame; 2. Casting device; 21. Upper mold shell; 22. Upper mold plate; 3. Unloading device; 31. Rotating seat; 32. Control arm; 33. Placing tray; 4. Air guide assembly; 41. Spiral air guide tube; 42. Connecting terminal; 43. Air guide terminal; 5. Ejector assembly; 51. Telescopic tube; 52. Ejector block; 53. Telescopic part; 54. Adjusting piece; 55. Push bar; 6. Fan assembly; 61. Conducting tube; 62. Air guide fan; 63. Refrigeration module; 7. Movable block; 8. Movable assembly; 81. Upper plate; 82. Air bag; 83. Connecting pipe; 9. Limiting ring. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] The terms "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0039] Reference Figures 1-10 A low-pressure casting machine for producing metal components of a slag cooler comprises: a double-station casting frame 1, two symmetrically arranged casting devices 2 and a blanking device 3, wherein the casting device 2 comprises an upper mold shell 21 and an upper template 22, wherein the upper template 22 is arranged inside the upper mold shell 21, and a cooling space is provided between the upper template 22 and the upper mold shell 21;

[0040] An air guide assembly 4 is provided inside the cooling space, a sliding opening is provided in the middle of the upper template 22, an ejection assembly 5 is provided inside the sliding opening, the ejection assembly 5 is connected to the air guide assembly 4, and the air guide assembly 4 is used to drive the ejection assembly 5 to move up and down;

[0041] The ejection assembly 5 includes a telescopic tube 51, an ejection block 52, a telescopic member 53, an adjustment piece 54 and a plurality of push strips 55. The ejection block 52 is slidably arranged inside the sliding port and is provided with an adjustment groove inside. The telescopic tube 51 is fixedly connected between the air guide assembly 4 and the sliding port. The telescopic member 53 is fixedly connected to the bottom of the air guide assembly 4. The adjustment piece 54 is fixedly connected to the bottom end of the telescopic member 53 and is provided inside the adjustment groove. The bottom side of the ejection block 52 is annularly provided with a plurality of inclined air holes connected to the adjustment groove. The plurality of push strips 55 are annularly fixedly connected to the side of the adjustment piece 54 and are respectively slidably arranged inside the plurality of air holes.

[0042] In the embodiment of the above technical solution, when the air guide component 4 is not working, the ejector block 52 is located below the movable port. When filling begins and molten metal is introduced into the casting device 2, air is exhausted through the air guide component 4, and the gas inside the mold is exhausted through multiple air holes, thereby leading out the excess gas inside the mold to prevent the gas from accumulating on the surface of the casting to form air holes. When the filled molten metal reaches a certain volume, a signal is sent through the control element to energize the inside of the telescopic member 53, and the telescopic member 53 contracts (an electric push rod can be selected when casting large and small metal components, and an energized solenoid can be selected when casting smaller metal components, and the telescopic member can be extended and retracted by energizing). This drives the adjustment piece 54 to move upward, and the adjustment piece 54 seals the opening at the upper end of the adjustment groove, so that the upper end of the ejector block is sealed to form a piston. At this time, the continuously generated negative pressure drives the ejector block 52 to move upward, and the ejector block 52 is transferred to the inside of the sliding port. The multiple air holes are closed by the sliding port, thereby preventing the molten metal from entering the air holes during the casting process.

[0043] When the casting is completed, gas is introduced into the adjusting groove to drive the adjusting piece 54 to move downward. The gas introduced into the adjusting groove will squeeze the ejection block 52, thereby ejecting the ejection block 52 from the inside of the sliding port. At the same time, the casting is ejected downward by the ejection block 52. At this time, a gap is formed between the casting and the upper template 22. A large amount of gas is then introduced into the gap through the air holes set on the side to form a pushing air film, thereby quickly separating the casting from the mold.

[0044] During the long-term use of the mold, the mold will shrink and deform slightly. However, due to the quantitative introduction of molten metal, some of the excess molten metal will enter the gap between the ejector block 52 and the sliding port. The amount of molten metal entering the gap is small and will form metal agglomerates. Some of the metal agglomerates will be blocked at the ends of the pores, affecting the normal air conduction of the pores. When the casting is completed and needs to be demolded, the telescopic part 53 is powered off and the regulating piece 54 will be pushed downward by the ejected gas. During the downward movement, the pushing bar 55 will be driven to move, thereby impacting and pushing the metal agglomerates that may exist inside the pores through the pushing bar 55 to avoid blockage of the pores and ensure the normal movement of the gas.

[0045] The present invention can clean the positions of the air holes during the ventilation and demoulding process, thereby avoiding blockage of the air holes and ensuring the demoulding efficiency.

[0046] The preferred technical solution in this embodiment is:

[0047] Reference Figure 3-5 The upper end of the adjustment groove is open, and the opening is set to an inverted truncated cone shape. The adjustment piece 54 is disc-shaped, and the diameter of the adjustment piece 54 is larger than the diameter of the upper end of the opening and smaller than the diameter of the lower end of the opening;

[0048] A limit ring 9 is provided in the middle of the sliding opening. The ejection block 52 is an I-shaped block, and the limit ring 9 is provided inside the annular groove in the middle of the ejection block 52. The limit ring 9 is used to limit the upward and downward movement of the ejection block 52.

[0049] The pushing bar 55 is made of elastic metal material and has a protruding end at its end. The diameter of the protruding end is smaller than the diameter of the air hole.

[0050] When the gas guide assembly 4 is not working and there is no gas movement, the ejection block 52 will move to the bottom due to its own gravity. At this time, the limit ring 9 can limit the downward position of the ejection block 52 and play a role of static support.

[0051] When the air guide component 4 starts to evacuate the gas inside the mold quickly, a gas flow from bottom to top will be formed inside the adjustment groove. When the molten metal is filled to a certain volume, the control telescopic member 53 is energized and contracted, thereby driving the adjustment piece 54 to move upward, so that the adjustment piece 54 is in sealing contact with the opening of the adjustment groove, and the ejection block is turned into a piston block, causing negative pressure inside the telescopic tube 51. The negative pressure generated inside the telescopic tube 51 will cause the ejection block 52 to move upward. At the same time, since the bottom end of the ejection block 52 fits the shape of the bottom surface of the upper template 22, the upward position of the ejection block 52 is restricted by the limit ring 9, and no bumps are generated between the upwardly moving ejection block 52 and the upper template 22, ensuring that no uneven surface is generated during component molding.

[0052] By moving the adjusting piece 54 up and down, it has a sealing effect during the upward movement, and has a function of clearing the blocked air holes during the downward movement. According to the adjustment of the usage status, a single structure can have different effects in different states.

[0053] Reference Figure 6 and Figure 7 The air guide assembly 4 includes a spiral air guide tube 41, a connecting end 42 and an air guide end 43. The spiral air guide tube 41 is arranged inside the cooling space, and the air guide end 43 is arranged at the middle end of the spiral air guide tube 41, and a plurality of air ports are arranged at the bottom. The connecting end 42 is fixedly connected to the external end of the spiral air guide tube.

[0054] During the filling stage, the molten metal slowly fills the molding cavity inside the mold under the action of low pressure. The gas in the mold will accumulate. To avoid the formation of pores due to gas accumulation, air is extracted from multiple pores opened on the side of the ejector block 52 through the air guide terminal 43, and then the gas is transferred through the spiral air guide tube 41 and the air guide terminal 43, so that the inside of the mold is close to a vacuum state, avoiding the formation of a rough surface on the surface of the casting by the gas.

[0055] After the casting has completed solidification, it needs to be demolded. Compressed gas is introduced into the adjustment groove inside the ejection block 52 through the air guide component 4. The aluminum alloy casting will choose to use nitrogen to prevent high-temperature oxidation for demolding, forming a reverse pressure to offset the vacuum adsorption force between the casting and the mold, reducing the demolding resistance. At the same time, the gas is evenly discharged through multiple air holes, and a layer of pushing air film can be formed between the casting and the mold, thereby quickly separating the casting and the mold.

[0056] Existing ventilated demolding methods will choose to discharge gas through pores, but during the discharge process, the gas will directly act on the surface of the casting that has just completed solidification, thereby forming an impact on the surface of the casting, which can easily cause deformation of thinner castings and affect the yield of the castings. The present invention first ejects through the ejection block 52 to form a gap between the casting and the mold, and then introduces compressed gas through the side to form an air film between the casting and the mold. The air film is used to push the separation, thereby avoiding impact on the surface of the casting and ensuring rapid separation of the casting.

[0057] Reference Figure 8 A fan assembly 6 is provided between the two symmetrically arranged air guide components 4. The fan assembly 6 includes a conducting pipe 61, an air guide fan 62 and a refrigeration module 63. The air guide fan 62 is fixedly installed in the middle of the double-station casting frame 1. The conducting pipe 61 is a three-head pipe, and its two ends are respectively connected to the two connecting ends 42, and the other end is fixedly connected to the air guide fan 62. The refrigeration module 63 is installed on the upper end of the air guide fan 62.

[0058] The air inside the mold can be quickly evacuated through the air guide fan 62, so that a vacuum state is formed inside the mold during the filling process. In the demolding stage, since the casting needs to be cooled after casting, the compressed gas to be introduced can be subjected to low-temperature treatment through the installed refrigeration module 63, and the temperature inside the cooling space is reduced through the spiral air guide tube 41, which has the effect of accelerating cooling. Finally, the low-temperature compressed gas is introduced between the casting and the mold through the adjustment groove inside the ejection block 52 to complete the demolding.

[0059] Reference Figure 9 The upper template 22 is symmetrically provided with two movable openings, and two movable blocks 7 are respectively provided inside the two movable openings. The two movable blocks 7 move up and down to separate the metal component from the upper template 22;

[0060] A movable assembly 8 is provided between the movable block 7 and the upper template 22 , and the movable assembly 8 is used to drive the movable block 7 to move up and down, and the movable assembly 8 is connected to the air guide end 43 ;

[0061] The movable component 8 includes an upper plate 81, two air bags 82 and a connecting pipe 83. The upper plate 81 is a T-shaped plate and is fixedly connected to the upper end of the movable block 7. The two air bags 82 are respectively fixedly connected to the two sides of the bottom surface of the upper plate 81 and are fixedly connected to the upper surface of the upper template 22. The connecting pipe 83 is an F-shaped pipe fitting, and its two parallel ends are respectively connected to the two air bags 82, and the other end is connected to the air guide end 43.

[0062] After the casting is completed, during the demolding process, the module needs to be quickly separated from the casting. By setting a movable port on the upper template 22, part of the mold is set as a movable block 7 that can move upward. During the process of exhausting the air guide component 4, the gas inside the air bag 82 will be extracted through the air guide end 43, so that a negative pressure is formed inside the air bag 82, so that the upper plate 81 is close to the surface of the upper template 22, and the movable block 7 is stuck inside the movable port to make the mold complete. At the same time, the negative pressure support can withstand sufficient metal liquid extrusion to ensure the molding of the casting.

[0063] After the casting is completed, low-temperature compressed gas is introduced into the air guide end 43, and the compressed gas is transferred to the inside of the air bag 82 through the connecting pipe 83, thereby expanding the air bag 82. The low-temperature compressed gas will quickly cool the position of the movable block 7, reducing the adhesion of the casting at the position of the movable block 7. At the same time, in the process of lifting the upper plate 81, the movable block 7 is driven to move upward, so that the movable block 7 is separated from the casting, accelerating the formation of the demoulding air film, and ensuring the rapid demoulding of the casting.

[0064] By adjusting the positive and negative pressures of the air guide assembly 4, the state of the movable assembly 8 can be changed. Under negative pressure, the fixation of the movable block 7 and the upper template 22 can be ensured. Under positive pressure, the movable block 7 can be gradually separated from the upper module to ensure rapid demolding of the casting.

[0065] Reference Figure 10 The unloading device 3 includes a rotating seat 31, a control arm 32 and a material placement tray 33. The rotating seat 31 is fixedly installed in the middle of the double-station casting frame 1, the control arm 32 is fixedly installed on the upper end of the rotating seat 31, and the material placement tray 33 is fixedly installed at the end of the control arm 32.

[0066] Since the low-pressure casting machine of the present application is a double-station design, during the unloading process, the control arm 32 is driven to rotate by the rotating seat 31, and the material placement tray 33 is transferred to the bottom of the upper mold shell 21 of the completed casting to collect and transfer the casting.

[0067] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A low-pressure casting machine for producing metal components of a cold slag machine, comprising: A double-station casting frame (1), two symmetrically arranged casting devices (2) and a blanking device (3), characterized in that the casting device (2) comprises an upper mold shell (21) and an upper template (22), the upper template (22) is arranged inside the upper mold shell (21), and a cooling space is provided between the upper template (22) and the upper mold shell (21); An air guide assembly (4) is provided inside the cooling space, a sliding opening is provided in the middle of the upper template (22), an ejection assembly (5) is provided inside the sliding opening, the ejection assembly (5) is communicated with the air guide assembly (4), and the air guide assembly (4) is used to drive the ejection assembly (5) to move up and down; The ejection assembly (5) includes a telescopic tube (51), an ejection block (52), a telescopic member (53), an adjustment sheet (54) and a plurality of push strips (55), wherein the ejection block (52) is slidably arranged inside the sliding port and an adjustment groove is arranged inside the ejection block (52), the telescopic tube (51) is fixedly connected between the air guide assembly (4) and the sliding port, the telescopic member (53) is fixedly connected to the bottom of the air guide assembly (4), the adjustment sheet (54) is fixedly connected to the bottom end of the telescopic member (53) and is arranged inside the adjustment groove, the bottom side of the ejection block (52) is annularly provided with a plurality of inclined air holes connected to the adjustment groove, and the plurality of push strips (55) are annularly fixedly connected to the side of the adjustment sheet (54) and are respectively slidably arranged inside the plurality of air holes; The upper end of the adjustment groove is an opening, and the opening is set in an inverted truncated cone shape. The adjustment piece (54) is disc-shaped, and the diameter of the adjustment piece (54) is larger than the diameter of the upper end of the opening and smaller than the diameter of the lower end of the opening.

2. A low pressure casting machine for producing metal components of a slag cooler according to claim 1, characterized in that: A limiting ring (9) is provided in the middle of the sliding opening, the ejection block (52) is an I-shaped block, and the limiting ring (9) is provided inside the annular groove in the middle of the ejection block (52), and the limiting ring (9) is used to limit the position of the ejection block (52) moving up and down.

3. A low pressure casting machine for producing metal components of a slag cooler according to claim 1, characterized in that: The pushing bar (55) is made of elastic metal material, and a protruding end is provided at the end thereof, wherein the diameter of the protruding end is smaller than the diameter of the air hole.

4. A low pressure casting machine for producing metal components of a slag cooler according to claim 1, characterized in that: The air guide assembly (4) comprises a spiral air guide tube (41), a connecting end (42) and an air guide end (43); the spiral air guide tube (41) is arranged inside the cooling space; the air guide end (43) is arranged at the middle end of the spiral air guide tube (41), and a plurality of air ports are arranged at the bottom; the connecting end (42) is fixedly connected to the outer end of the spiral air guide tube (41).

5. A low pressure casting machine for producing metal components of a slag cooler according to claim 4, characterized in that: A fan assembly (6) is provided between the two symmetrically arranged air guide assemblies (4), the fan assembly (6) comprising a conducting pipe (61), an air guide fan (62) and a refrigeration module (63), the air guide fan (62) being fixedly installed in the middle of the double-station casting frame (1), the conducting pipe (61) being a three-headed pipe, with two ends respectively connected to two connecting ends (42), and the other end being fixedly connected to the air guide fan (62), and the refrigeration module (63) being installed on the upper end of the air guide fan (62).

6. A low pressure casting machine for producing metal components of a slag cooler according to claim 1, characterized in that: The upper template (22) is symmetrically provided with two movable openings, and two movable blocks (7) are respectively provided inside the two movable openings. The two movable blocks (7) move up and down to separate the metal component from the upper template (22).

7. A low pressure casting machine for producing metal components of a slag cooler according to claim 6, characterized in that: A movable assembly (8) is provided between the movable block (7) and the upper template (22), and the movable assembly (8) is used to drive the movable block (7) to move up and down, and the movable assembly (8) is communicated with the air guide end (43).

8. A low pressure casting machine for producing metal components of a slag cooler according to claim 7, characterized in that: The movable assembly (8) includes an upper plate (81), two air bags (82) and a connecting pipe (83). The upper plate (81) is a T-shaped plate and is fixedly connected to the upper end of the movable block (7). The two air bags (82) are respectively fixedly connected to the two sides of the bottom surface of the upper plate (81) and are fixedly connected to the upper surface of the upper template (22). The connecting pipe (83) is an F-shaped pipe fitting, and its two parallel ends are respectively connected to the two air bags (82), and the other end is connected to the air guide end (43).

9. A low pressure casting machine for producing metal components of a slag cooler according to claim 1, characterized in that: The unloading device (3) comprises a rotating seat (31), a control arm (32) and a material placement tray (33), wherein the rotating seat (31) is fixedly mounted in the middle of the double-station casting frame (1), the control arm (32) is fixedly mounted on the upper end of the rotating seat (31), and the material placement tray (33) is fixedly mounted on the end of the control arm (32).

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