Sand casting molding machine with self-cleaning mechanism

Abstract

The application provides a sand mold casting molding machine with a self-cleaning mechanism, and relates to the technical field of sand mold casting molding machines.The sand mold casting molding machine comprises a casting machine rack, a base is fixedly installed at the bottom of the casting machine rack, a first hydraulic cylinder and two second hydraulic cylinders are fixedly arranged above the base, a support table is fixedly installed above the first hydraulic cylinder, support frames are fixedly installed on the two second hydraulic cylinders, a bogie is arranged on the casting machine rack, an extrusion table plate is fixedly installed at the lower end of the bogie, the support table and the sand mold frame are lowered by the first hydraulic cylinder, the bogie drives the extrusion table plate to rotate and reset, high-pressure gas is sprayed from the multiple high-pressure exhaust pipes below when the extrusion table plate rotates, the high-pressure gas moves with the extrusion table plate to clean the surface of the support table and the sand mold frame, manual cleaning is not needed subsequently, the process of the semi-automatic casting machine rack is reduced, the operation efficiency is greatly improved, and the occurrence of sand mold residues that cause subsequent molding defects can be effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of sand casting molding machines, and more specifically, relates to a sand casting molding machine with a self-cleaning mechanism. Background Art

[0002] In the foundry industry, sand molding is a key link. However, traditional semi-automatic casting equipment has many problems in the sand molding and cleaning process, which seriously affects production efficiency, product quality and operational convenience.

[0003] The molding sand and cleaning process are cumbersome:

[0004] Traditional semi-automatic casting machines typically lack efficient sand sinking and molding assistance mechanisms during sand molding, often requiring multiple manual operations to compact the sand, resulting in low efficiency. Furthermore, after sand molding, the cleaning of residual sand from the support table and sand frame surfaces often relies on manual cleaning, which is not only time-consuming and labor-intensive, but can also easily lead to defects in subsequent molding due to incomplete cleaning, affecting product quality.

[0005] Poor cleaning effect:

[0006] On the one hand, manual cleaning is difficult to ensure comprehensiveness and thoroughness, and sand easily remains in the corners and gaps of the support platform and the sand frame. On the other hand, traditional equipment lacks effective cleaning measures for cleaning tools themselves, such as cleaning shovels, resulting in sand sticking to the cleaning tool surface, affecting the next cleaning effect, thus forming a vicious cycle and continuously reducing cleaning quality.

[0007] Low degree of automation:

[0008] Traditional equipment lacks automated control and adjustment mechanisms during the cleaning process. For example, during the air blowing cleaning process, the air pressure and time cannot be automatically adjusted according to actual conditions. Manual control of the air valve is often required. This is not only cumbersome but also prone to uneven or excessive sand dispersion due to improper control, affecting the cleaning effect and subsequent use of the sand.

[0009] Cleaning action is single:

[0010] Traditional cleaning methods mostly use blowing or sweeping in fixed positions and directions. The cleaning range is limited and cannot effectively cover the entire surface of the molding sand frame. The ability to clean scattered molding sand is insufficient, and it is difficult to simulate the flexible and changeable cleaning movements of manual labor. As a result, the cleaning efficiency and quality cannot meet the needs of modern casting production.

[0011] In summary, the existing semi-automatic casting equipment has obvious deficiencies in sand molding and cleaning, and cannot meet the requirements of the modern foundry industry for efficient, precise and automated production. Summary of the Invention

[0012] In order to solve the above technical problems, the present invention provides a sand casting molding machine with a self-cleaning mechanism to solve the above problems.

[0013] The jack-up plan is fixedly mounted on the bottom of the casting machine frame, and a first hydraulic cylinder and two second hydraulic cylinders are fixed above the base, a support platform is fixedly mounted above the first hydraulic cylinder, and the support frame is fixedly mounted on the two second hydraulic cylinders. A bogie is provided on the casting machine frame, and an extrusion table is fixedly mounted on the lower end of the bogie. Two second hydraulic cylinders are fixedly mounted on the surface of the base, and the two second hydraulic cylinders are respectively located on both sides of the two second hydraulic cylinders. A high-pressure gas storage tank is fixedly mounted inside the casting machine frame, and the two second hydraulic gas cylinders are connected to the high-pressure gas storage tank through an air pipe. A cleaning frame is provided above the extrusion table, and a lower groove is provided below the cleaning frame, and a cross bar is installed inside the lower groove. The high-pressure gas storage tank passes through the cleaning frame and is connected to the cross bar through the air pipe, and a number of rotatable high-pressure exhaust pipes are provided below the cross bar, and each high-pressure exhaust pipe is used to clean the casting machine frame.

[0014] Preferably, two connecting rods are fixedly installed on the rear side wall of the support frame, a first hydraulic cylinder is fixedly installed on the side wall of the casting machine frame, and the piston rod below the first hydraulic cylinder is fixedly connected to the connecting rod, an inflation barrel is fixedly installed above the two first hydraulic cylinders, and a high-pressure exhaust nozzle is fixedly embedded on the front side of the inflation barrel, two telescopic frames are fixedly installed below the support frame, and the two telescopic frames are located on the front and rear sides of the first hydraulic cylinder, several support columns are fixedly installed above the support frame, the piston rods above the two second hydraulic cylinders are located directly below the protrusions on both sides of the support platform, and a molding sand frame is installed above the support platform.

[0015] Preferably, two air-blocking plates are fixedly installed on the side walls of the casting machine frame, and the two air-blocking plates are both provided with rectangular grooves, and the high-pressure air pipe is located in the two rectangular grooves. Two fixed frames are fixedly installed above the extrusion table, and sliding frames are slidably installed inside the two fixed frames. A first spring is fixedly installed between the top of the two sliding frames and the top of the inner side of the fixed frame, a limit rod is fixedly installed between the tops of the two sliding frames, and the limit rod is located on the side of the first spring, and a rotating shaft is fixedly installed between the two sliding frames, and a side connecting plate is fixedly installed on the side wall of the cleaning frame, and the side connecting plate is rotatably installed outside the rotating shaft, an upper groove is provided above the side connecting plate, and a second spring is fixedly installed between the limit rod and the upper groove.

[0016] Preferably, a second oblique shovel plate and a first oblique shovel plate are fixedly installed below the cleaning rack, and the second oblique shovel plate and the first oblique shovel plate are located on both sides of the lower groove, at least two exhaust grooves are equidistantly provided inside the first oblique shovel plate and the second oblique shovel plate, and a gap is formed between the top of the second oblique shovel plate and the first oblique shovel plate and the bottom of the cleaning rack.

[0017] Preferably, the side wall of the cross bar is fixedly installed with a first rotating shaft frame, and the side wall of the first rotating shaft frame is rotatably installed with a turbine frame, an exhaust hole is provided under the cross bar, and the exhaust hole is located directly above the turbine frame, and sliding bars are provided on both sides of the turbine frame, a driving rod is installed between one of the slide bars and the turbine frame, and the driving rod is rotatably connected to the turbine frame and the slide bar, and each slide bar is sleeved with a fixed block fixed under the cross bar, a linkage rod is fixedly installed between the two slide bars, and the linkage rod is located on the side of the first rotating shaft frame, and several second rotating shaft frames are fixed on the side of the cross bar, and each second rotating shaft frame is rotatably connected to the high-pressure exhaust pipe, a third spring is fixed between the end of each slide bar and the high-pressure exhaust pipe, and each high-pressure exhaust pipe is connected to the cross bar through an air pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the user installs the molding sand frame on the supporting platform and then fills the molding sand frame with molding sand. At this time, the molding sand will overflow, and then the first hydraulic cylinder is started to drive the supporting platform and the molding sand frame to bump up and down, sinking the molding sand, and then the bogie drives the extrusion table to rotate to just above the molding sand frame, and starts the first hydraulic cylinder again. The first hydraulic cylinder drives the supporting platform and the molding sand frame to move upward, and the molding sand is formed in the molding sand frame under the extrusion of the supporting platform and the extrusion table. Then the first hydraulic cylinder drives the supporting platform and the molding sand frame to descend, and the bogie drives the extrusion table to rotate and reset. When the extrusion table rotates, multiple high-pressure exhaust pipes below will spray high-pressure gas. The high-pressure gas cleans the surface of the supporting platform and the molding sand frame as the extrusion table moves. No manual cleaning is required subsequently, which reduces the process of the semi-automatic casting machine frame, greatly improves the operating efficiency, and can effectively avoid the occurrence of molding sand residue leading to subsequent molding defects.

[0020] In the present invention, the two second hydraulic cylinders are started to drive the support frame to move upward, and the support frame drives the four support columns to move upward, and at the same time drives the two connecting rods on the rear side to move. The two connecting rods move upward and drive the two first hydraulic air barrels to fill a large amount of gas into the inflation barrel. The inflation barrel discharges the gas in a high-pressure form through the high-pressure exhaust nozzle. As the four support columns lift the molding sand frame upward, the support table and the molding sand frame are separated, and the high-pressure exhaust nozzle blows high-pressure air to the surface of the support table, thereby effectively and quickly cleaning the surface of the support table. The length of the high-pressure exhaust nozzle is greater than the support table, which can effectively clean the entire surface of the support table without manual secondary cleaning. After the support table is cleaned, it can be better prepared for the next sand molding.

[0021] In the present invention, a limit rod is fixedly installed between the tops of the two sliding frames, and the limit rod is located on the side of the first spring, and a rotating shaft is fixedly installed between the two sliding frames, and a side connecting plate is fixedly installed on the side wall of the cleaning frame, and the side connecting plate is rotatably installed outside the rotating shaft, an upper groove is provided above the side connecting plate, and a second spring is fixedly installed between the limit rod and the upper groove. When in use, after the molding sand frame is filled with molding sand, the bogie drives the extrusion table to rotate above the molding sand frame. Since the molding sand on the surface of the molding sand frame is full, when the extrusion table moves and drives the cleaning frame to move, the first oblique shovel plate and the second oblique shovel plate at the bottom of the cleaning frame can clean the molding sand overflowing from the surface of the molding sand frame, effectively reducing the molding sand on the surface of the molding sand frame and reducing the difficulty of subsequent cleaning.

[0022] In the present invention, the second bevel shovel plate and the first bevel shovel plate are both located on both sides of the lower groove, and at least two exhaust grooves are equidistantly provided inside the first bevel shovel plate and the second bevel shovel plate, and a gap is formed between the top of the second bevel shovel plate and the first bevel shovel plate and the bottom of the cleaning frame. When in use, when the second bevel shovel plate and the first bevel shovel plate are cleaning the molding sand, a part of the high-pressure gas discharged from the high-pressure exhaust pipe under the cross bar will clean the surfaces of the second bevel shovel plate and the first bevel shovel plate, and at the same time will enter the exhaust groove through the gap to clean the other side of the first bevel shovel plate and the second bevel shovel plate, effectively reducing the residue on the surfaces of the second bevel shovel plate and the first bevel shovel plate, and reducing the probability of sticking.

[0023] In the present invention, the first hydraulic cylinder drives the molding sand frame to move upward, and the molding sand frame moves upward and contacts the cleaning frame. The cleaning frame is forced to move upward and drives the two sliding frames to move through the rotating shaft. The two sliding frames slide in the fixed frame. The first spring in the fixed frame can help the cleaning frame to reset subsequently. At the same time, a second spring is provided between the upper groove and the limit rod. The second spring is used to control the angle between the cleaning frame and the molding sand frame, maintaining a certain inclination, so that the cleaning frame can fit the upper surface of the molding sand frame each time, thereby achieving a better cleaning effect.

[0024] In the present invention, when the high-pressure air pipe is bent and deformed and is stuck by the two air-blocking plates, the high-pressure air pipe can no longer supply air to the inside of the cross bar. When the bogie drives the extrusion plate to rotate gradually, the high-pressure air pipe gradually recovers its deformation and is ventilated again. By adopting the air-blocking plates to control the high-pressure air pipe in different states, there is no need to manually open and close the valve, which effectively improves the ability of automatic cleaning. The high-pressure air pipe gradually recovers its deformation, so the pressure sprayed under the cross bar gradually increases, and there will be no large amount of molding sand blown away on the surface of the molding sand frame at the beginning of rotation. At the same time, a manual valve is provided on the high-pressure air storage tank, which can be adjusted according to the needs of the user.

[0025] In the present invention, when the extrusion plate drives the cleaning frame to reset and move, the cleaning frame drives the horizontal bar below to move. Since there is a high-pressure air hole above the turbine frame, the turbine frame will be driven to rotate when the air is discharged quickly. The rotation of the turbine frame drives the sliding rod to move back and forth horizontally through the driving rod. The sliding rods on both sides are connected by a linkage rod, so the sliding rods on both sides can move back and forth horizontally. Since the sliding rod and the high-pressure exhaust pipe are connected by a third spring, the back and forth movement of the sliding rod will drive the high-pressure exhaust pipe to swing back and forth, thereby realizing large-area high-pressure cleaning of the surface of the molding sand frame, more simulating manual cleaning actions, and improving the cleaning ability of scattered molding sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the casting machine frame of the present invention;

[0027] Figure 2 This is a schematic structural diagram of the high-pressure gas storage tank of the present invention;

[0028] Figure 3 This is a schematic structural diagram of the inflatable barrel of the present invention;

[0029] Figure 4 This invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0030] Figure 5 This is a schematic diagram of the extrusion platen structure of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the fixing frame of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the cleaning rack of the present invention;

[0033] Figure 8 It is a schematic diagram of the crossbar structure of the present invention;

[0034] Figure 9 It is a schematic structural diagram of the high-pressure exhaust pipe of the present invention.

[0035] In the figure, the corresponding relationship between the names of the components and the accompanying drawing numbers is as follows: 1. casting machine frame; 11. base; 12. first hydraulic cylinder; 13. support frame; 14. support column; 15. telescopic frame; 16. second hydraulic cylinder; 17. support platform; 18. molding sand frame; 19. bogie; 2. extrusion plate; 21. connecting rod; 22. first hydraulic cylinder; 23. charging cylinder; 24. high-pressure exhaust nozzle; 25. second hydraulic cylinder; 26. high-pressure gas storage tank; 27. high-pressure gas pipe; 28. gas clamping plate; 29. Rectangular groove; 3. Fixed frame; 31. Sliding frame; 32. First spring; 33. Rotating shaft; 34. Limiting rod; 35. Second spring; 36. Side connecting plate; 37. Upper groove; 38. Cleaning frame; 39. Lower groove; 4. First oblique shovel plate; 41. Second oblique shovel plate; 42. Exhaust groove; 43. First rotating shaft frame; 44. Turbine frame; 45. Drive rod; 46. Sliding rod; 47. High-pressure exhaust pipe; 49. Linkage rod; 5. Cross bar; 51. Third spring; 52. Second rotating shaft frame. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0037] See also Figures 1-9The present invention provides a sand casting molding machine with a self-cleaning mechanism, comprising a casting machine frame 1, a base 11 is fixedly installed at the bottom of the casting machine frame 1, a first hydraulic cylinder 12 and two second hydraulic cylinders 16 are fixed above the base 11, a support platform 17 is fixedly installed above the first hydraulic cylinder 12, a support frame 13 is fixedly installed on the two second hydraulic cylinders 16, a bogie 19 is provided on the casting machine frame 1, an extrusion plate 2 is fixedly installed at the lower end of the bogie 19, two second hydraulic cylinders 25 are fixedly installed on the surface of the base 11, and the two second hydraulic cylinders 25 are respectively located at two On both sides of the second hydraulic cylinder 16, a high-pressure gas storage tank 26 is fixedly installed inside the casting machine frame 1. The two second hydraulic gas cylinders 25 are connected to the high-pressure gas storage tank 26 through an air pipe. A cleaning rack 38 is provided above the extrusion platen 2. A lower groove 39 is provided below the cleaning rack 38. A cross bar 5 is installed inside the lower groove 39. The high-pressure gas storage tank 26 is connected to the cross bar 5 through the air pipe through the cleaning rack 38. Several rotatable high-pressure exhaust pipes 47 are provided below the cross bar 5, and each high-pressure exhaust pipe 47 is used to clean the casting machine frame 1. When in use, when casting metal accessories, It is necessary to use the casting machine frame 1 for early casting molding. In the initial state, the bogie 19 and the extrusion plate 2 are rotated and located on the side of the casting machine frame 1. The user installs the molding sand frame 18 on the support platform 17, and then fills the molding sand in the molding sand frame 18. At this time, the molding sand will overflow, and then the first hydraulic cylinder 12 is started to drive the support platform 17 and the molding sand frame 18 to bump up and down, sinking the molding sand, and then the bogie 19 drives the extrusion plate 2 to rotate to the top of the molding sand frame 18, and the first hydraulic cylinder 12 is started again. The first hydraulic cylinder 12 drives the support platform 17 and the molding sand frame 18 to move upward. The molding sand is formed in the molding sand frame 18 under the squeezing of the support platform 17 and the extrusion plate 2. Then the first hydraulic cylinder 12 drives the support platform 17 and the molding sand frame 18 to descend, and the bogie 19 drives the extrusion plate 2 to rotate and reset. When the extrusion plate 2 rotates, the multiple high-pressure exhaust pipes 47 below will spray high-pressure gas. The high-pressure gas cleans the surface of the support platform 17 and the molding sand frame 18 as the extrusion plate 2 moves. There is no need for manual cleaning later, which reduces the process of the semi-automatic casting machine frame 1, greatly improves the operating efficiency, and can effectively avoid the occurrence of molding sand residues that lead to subsequent molding defects.

[0038] Two connecting rods 21 are fixedly installed on the rear side wall of the support frame 13, and a first hydraulic cylinder 22 is fixedly installed on the side wall of the casting machine frame 1, and the piston rod below the first hydraulic cylinder 22 is fixedly connected to the connecting rod 21, and an air filling cylinder 23 is fixedly installed above the two first hydraulic cylinders 22, and a high-pressure exhaust nozzle 24 is fixedly inlaid on the front side of the air filling cylinder 23. Two telescopic frames 15 are fixedly installed below the support frame 13, and the two telescopic frames 15 are both located on the front and rear sides of the first hydraulic cylinder 12. Several support columns 14 are fixedly installed above the support frame 13. The piston rods above the two second hydraulic cylinders 25 are both located directly below the protrusions on both sides of the support platform 17. A molding sand frame 18 is installed above the support platform 17. When in use, after the molding sand in the molding sand frame 18 is formed, the two second hydraulic cylinders 16 start The movement drives the support frame 13 to move upward, and the support frame 13 drives the four support columns 14 to move upward, and at the same time drives the two connecting rods 21 on the rear side to move. The two connecting rods 21 move upward and drive the two first hydraulic air cylinders 22 to fill a large amount of gas into the inflation barrel 23. The inflation barrel 23 discharges the gas in a high-pressure form through the high-pressure exhaust nozzle 24. As the four support columns 14 lift the molding sand frame 18 upward, the support platform 17 and the molding sand frame 18 are separated, and the high-pressure exhaust nozzle 24 blows high-pressure air on the surface of the support platform 17, thereby effectively and quickly cleaning the surface of the support platform 17. The length of the high-pressure exhaust nozzle 24 is greater than the support platform 17, which can effectively clean the entire surface of the support platform 17 without manual secondary cleaning. After the support platform 17 is cleaned, it can be better prepared for the next sand molding.

[0039] Two air-blocking plates 28 are fixedly mounted on the side walls of the casting machine frame 1. Both air-blocking plates 28 are provided with rectangular grooves 29, and the high-pressure air pipe 27 is located in the two rectangular grooves 29. Two fixed frames 3 are fixedly mounted above the extrusion platen 2. Sliding frames 31 are slidably mounted inside the two fixed frames 3. A first spring 32 is fixedly mounted between the tops of the two sliding frames 31 and the tops of the inner sides of the fixed frames 3. A limiting rod 34 is fixedly mounted between the tops of the two sliding frames 31, and the limiting rod 34 is located on the side of the first spring 32. A rotating shaft 33 is fixedly mounted between the two sliding frames 31. A side connecting plate 36 is fixedly mounted on the side walls of the cleaning frame 38. The side connecting plate 36 is rotatably mounted on the outside of the rotating shaft 33. An upper groove 37 is provided above the side connecting plate 36, and a second spring 35 is fixedly installed between the limit rod 34 and the upper groove 37. When in use, after the molding sand frame 18 is filled with molding sand, the bogie 19 drives the extrusion plate 2 to rotate above the molding sand frame 18. Since the molding sand on the surface of the molding sand frame 18 is overflowing, when the extrusion plate 2 moves and drives the cleaning frame 38 to move, the first oblique shovel plate 4 and the second oblique shovel plate 41 at the bottom of the cleaning frame 38 can clean the molding sand overflowing from the surface of the molding sand frame 18, effectively reducing the molding sand on the surface of the molding sand frame 18 and reducing the difficulty of subsequent cleaning.

[0040] A second oblique shovel plate 41 and a first oblique shovel plate 4 are fixedly installed below the cleaning frame 38, and the second oblique shovel plate 41 and the first oblique shovel plate 4 are both located on both sides of the lower groove 39, and at least two exhaust grooves 42 are equidistantly provided inside the first oblique shovel plate 4 and the second oblique shovel plate 41, and a gap is formed between the tops of the second oblique shovel plate 41 and the first oblique shovel plate 4 and the bottom of the cleaning frame 38. When in use, when the second oblique shovel plate 41 and the first oblique shovel plate 4 clean the molding sand, a part of the high-pressure gas discharged from the high-pressure exhaust pipe 47 below the cross bar 5 will clean the surfaces of the second oblique shovel plate 41 and the first oblique shovel plate 4, and at the same time enter the exhaust groove 42 through the gap to clean the other side of the first oblique shovel plate 4 and the second oblique shovel plate 41, thereby effectively reducing the residue on the surfaces of the second oblique shovel plate 41 and the first oblique shovel plate 4 and reducing the probability of sticking;

[0041] After the extrusion platen 2 rotates to just above the molding sand frame 18, the first hydraulic cylinder 12 drives the molding sand frame 18 to move upward, and the molding sand frame 18 moves upward to contact the cleaning frame 38. The cleaning frame 38 is forced to move upward and drives the two sliding frames 31 to move through the rotating shaft 33. The two sliding frames 31 slide in the fixed frame 3. The first spring 32 in the fixed frame 3 can help the cleaning frame 38 to reset subsequently. At the same time, a second spring 35 is provided between the upper groove 37 and the limit rod 34. The second spring 35 is used to control the angle between the cleaning frame 38 and the molding sand frame 18, maintaining a certain inclination, so that the cleaning frame 38 can fit the upper surface of the molding sand frame 18 each time, thereby achieving a better cleaning effect.

[0042] The air supply pipe 27 is compressed and the pressure drop is gradually increased, so that the pressure drop is gradually increased, and the pressure drop is gradually increased.

[0043] The side wall of the cross bar 5 is fixedly installed with a first rotating shaft frame 43, and the side wall of the first rotating shaft frame 43 is rotatably installed with a turbine frame 44. An exhaust hole is provided at the bottom of the cross bar 5, and the exhaust hole is located just above the turbine frame 44. Slide rods 46 are provided on both sides of the turbine frame 44, and a driving rod 45 is installed between one of the slide rods 46 and the turbine frame 44, and the driving rod 45 is rotatably connected to the turbine frame 44 and the slide rods 46, and each slide rod 46 is sleeved with a fixed block fixed to the bottom of the cross bar 5, and a linkage rod 49 is fixedly installed between the two slide rods 46, and the linkage rod 49 is located on the side of the first rotating shaft frame 43, and several second rotating shaft frames 52 are fixed to the side of the cross bar 5, and each second rotating shaft frame 52 is rotatably connected to the high-pressure exhaust pipe 47, and each high-pressure exhaust pipe 47 is connected to the cross bar 5 through an air pipe. A third spring 51 is fixed between the end of 46 and the high-pressure exhaust pipe 47. When in use, when the extrusion plate 2 drives the cleaning frame 38 to reset and move, the cleaning frame 38 drives the horizontal bar 5 below to move. Since there is a high-pressure air hole above the turbine frame 44, when the air is discharged quickly, the turbine frame 44 will be driven to rotate. The rotation of the turbine frame 44 drives the sliding rod 46 to move back and forth horizontally through the driving rod 45. The sliding rods 46 on both sides are connected by a linkage rod 49, so the sliding rods 46 on both sides can move back and forth horizontally. Since the sliding rod 46 and the high-pressure exhaust pipe 47 are connected by the third spring 51, the back and forth movement of the sliding rod 46 will drive the high-pressure exhaust pipe 47 to swing back and forth, thereby realizing large-area high-pressure cleaning of the surface of the molding sand frame 18, more simulating manual cleaning actions, and improving the cleaning ability of scattered molding sand.

[0044] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A sand casting molding machine with a self-cleaning mechanism, comprising a casting machine frame (1), a base (11) fixedly mounted on the bottom of the casting machine frame (1), a first hydraulic cylinder (12) and two second hydraulic cylinders (16) fixedly mounted above the base (11), a support platform (17) fixedly mounted above the first hydraulic cylinder (12), a support frame (13) fixedly mounted on the two second hydraulic cylinders (16), a bogie (19) provided on the casting machine frame (1), an extrusion platen (2) fixedly mounted on the lower end of the bogie (19), characterized in that: Two second hydraulic cylinders (25) are fixedly mounted on the surface of the base (11), and the two second hydraulic cylinders (25) are respectively located on both sides of the two second hydraulic cylinders (16). A high-pressure gas storage tank (26) is fixedly mounted inside the casting machine frame (1), and the two second hydraulic cylinders (25) are connected to the high-pressure gas storage tank (26) through air pipes. A cleaning rack (38) is provided above the extrusion platen (2), and a lower groove (39) is provided below the cleaning rack (38). A cross bar (5) is installed inside the lower groove (39). The high-pressure gas storage tank (26) is connected to the cross bar (5) through the air pipe penetrating the cleaning rack (38). A plurality of rotatable high-pressure exhaust pipes (47) are provided below the cross bar (5), and each high-pressure exhaust pipe (47) is used to clean the casting machine frame (1); Two air-blocking plates (28) are fixedly installed on the side wall of the casting machine frame (1), and the two air-blocking plates (28) are both provided with rectangular grooves (29), and the high-pressure air pipe (27) is located in the two rectangular grooves (29). Two fixed frames (3) are fixedly installed above the extrusion platen (2), and sliding frames (31) are slidably installed inside the two fixed frames (3). A first spring (32) is fixedly installed between the top of the two sliding frames (31) and the top of the inner side of the fixed frame (3). The two sliding frames ( A limiting rod (34) is fixedly installed between the tops of the two sliding frames (31), and the limiting rod (34) is located on the side of the first spring (32); a rotating shaft (33) is fixedly installed between the two sliding frames (31); a side connecting plate (36) is fixedly installed on the side wall of the cleaning frame (38), and the side connecting plate (36) is rotatably installed outside the rotating shaft (33); an upper groove (37) is opened above the side connecting plate (36), and a second spring (35) is fixedly installed between the limiting rod (34) and the upper groove (37); The second oblique shovel plate (41) and the first oblique shovel plate (4) are fixedly installed below the cleaning frame (38), and the second oblique shovel plate (41) and the first oblique shovel plate (4) are both located on both sides of the lower groove (39), at least two exhaust grooves (42) are equidistantly provided inside the first oblique shovel plate (4) and the second oblique shovel plate (41), and a gap is formed between the top of the second oblique shovel plate (41) and the first oblique shovel plate (4) and the bottom of the cleaning frame (38), the side wall of the cross bar (5) is fixedly installed with a first rotating shaft frame (43), the side wall of the first rotating shaft frame (43) is rotatably installed with a turbine frame (44), an exhaust hole is provided below the cross bar (5), and the exhaust hole is located directly above the turbine frame (44), and sliding rods (4) are provided on both sides of the turbine frame (44). 6), a driving rod (45) is installed between one of the slide bars (46) and the turbine frame (44), and the driving rod (45) is rotatably connected to the turbine frame (44) and the slide bars (46), and each slide bar (46) is sleeved with a fixed block fixed to the bottom of the cross bar (5), a linkage rod (49) is fixedly installed between the two slide bars (46), and the linkage rod (49) is located on the side of the first rotating shaft frame (43), and a plurality of second rotating shaft frames (52) are fixed on the side of the cross bar (5), and each second rotating shaft frame (52) is rotatably connected to the high-pressure exhaust pipe (47), a third spring (51) is fixed between the end of each slide bar (46) and the high-pressure exhaust pipe (47), and each high-pressure exhaust pipe (47) is connected to the cross bar (5) through an air pipe.

2. A sand casting molding machine with a self-cleaning mechanism as claimed in claim 1, characterized in that: Two connecting rods (21) are fixedly mounted on the rear side wall of the support frame (13); a first hydraulic cylinder (22) is fixedly mounted on the side wall of the casting machine frame (1); a piston rod below the first hydraulic cylinder (22) is fixedly connected to the connecting rod (21); an air charging cylinder (23) is fixedly mounted above the two first hydraulic cylinders (22); and a high-pressure exhaust nozzle (24) is fixedly mounted on the front side of the air charging cylinder (23).

3. A sand casting molding machine with a self-cleaning mechanism as claimed in claim 1, characterized in that: Two telescopic frames (15) are fixedly installed below the support frame (13), and the two telescopic frames (15) are both located on the front and rear sides of the first hydraulic cylinder (12). Several support columns (14) are fixedly installed above the support frame (13).

4. A sand casting molding machine with a self-cleaning mechanism as claimed in claim 1, characterized in that: The piston rods above the two second hydraulic cylinders (25) are both located directly below the protrusions on both sides of the support platform (17), and a molding sand frame (18) is installed above the support platform (17).

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