Air volume partition control under compaction structure

Abstract

This invention belongs to the field of casting technology, and particularly relates to a compaction structure under air volume zone control. It includes a base, a box on the upper side of the base, a sand inlet on one side of the box, a sand box connecting block on the sand inlet, a sand box connected to the sand box connecting block, a first sintering mesh hinged to the lower side of the box, multiple second sintering meshes around the inside of the box, a first airflow channel on the outer side of the box, and a two-control valve on one side of the box. The two-control valve controls the air intake below the first sintering mesh and the air intake within the first airflow channel. This invention enables the vertical upward injection of molding sand and the supply of air to the periphery of the box through the two-control valve, facilitating molding sand ejection and cleaning. A rotating plate, in conjunction with a first rotating shaft, lifts the molding sand on the first sintering mesh and moves it to one side, allowing the sand to be vertically blown up by gas. An elliptical column rotates and contacts the lower side of the first sintering mesh, causing the first sintering mesh to move up and down and vibrate, facilitating the cleaning of the molding sand.

Description

Technical Field

[0001] This invention belongs to the field of casting technology, and in particular relates to a compaction structure under gas volume zone control. Background Technology

[0002] In recent years, molding equipment has seen significant development. The previously widely used vibration molding machines have been replaced by micro-vibration compaction molding machines, and multi-contact high-pressure micro-vibration molding machines, as well as boxless and boxless injection molding machines, have also been developed. In particular, the air-jet molding machines developed in recent years have ushered in a new stage of high-quality, high-efficiency, and low-consumption mechanization. Air-jet molding machines are generally divided into sand-jetting devices for compacting molding sand, sand-throwing compaction mechanisms, and sand-jetting devices for compacting molding sand. Sand-jetting compaction mainly involves converting the kinetic energy of the sand-airflow into the compaction work of the molding sand. It impacts the molding sand in the mainstream direction, and in the non-mainstream direction, the pressure difference inside and outside the exhaust holes creates a filtering and compacting effect.

[0003] After sand injection, a small amount of wet sand adheres to the inside of the existing air-jet molding machine. The residual sand inside the air-jet molding machine is difficult to clean, thus affecting the sand injection efficiency of the air-jet molding machine. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a compaction structure with air volume zone control that can effectively clean residual molding sand through a combination of air blowing and air guiding, facilitating equipment cleaning and maintenance.

[0005] The objective of this invention can be achieved through the following technical solution: a compaction structure under air volume zone control, comprising a base, a box body on the upper side of the base, a pressure plate on the upper side of the box body, a plurality of conical holes for sand injection inside the pressure plate, a sand inlet on one side of the box body, a sand box connecting block on the sand inlet, a sand box connected to the sand box connecting block, a first sintered mesh hinged to the lower side inside the box body, a plurality of second sintered meshes around the inside of the box body, a first airflow channel on the outer side of the box body, a two-control valve on one side of the box body, the two-control valve controlling the air intake below the first sintered mesh and the air intake in the first airflow channel, and an air hole connecting the first airflow channel and the second sintered mesh.

[0006] The conical hole is used for sand injection, and the molding sand can be compacted by the pressure plate. The first sintered mesh controls the air intake through a two-control valve to shoot the molding sand vertically upward. Then, the second sintered mesh cooperates with the first airflow channel to supply air to the periphery of the box to prevent the molding sand from sticking to the inner wall of the box.

[0007] Preferably, the dual-control valve includes a fixed frame with two air chambers inside, the two air chambers being gas-connected. A first air inlet is connected to the outside of the fixed frame in each air chamber. A second air inlet and a third air inlet are connected between the inside of the base and the fixed frame. A cavity is formed between the second air inlet and the lower side of the first sintered mesh. A first connecting channel is formed between the third air inlet and a first airflow channel, which surrounds the outer perimeter of the housing. Air is supplied to the second and third air inlets through the first air inlet to vertically shoot the molding sand upwards and to supply air to the perimeter of the housing, preventing the molding sand from adhering to the inner wall of the housing.

[0008] Preferably, each of the two air chambers is equipped with a sliding sealing block, and two cylinders are provided on the outer side of each air chamber. Each of the two cylinders is equipped with a double-headed cylinder, one end of which is connected to the sealing block, and the other end of each double-headed cylinder is equipped with a bolt. Each bolt is threadedly connected to a fixed frame. The amount of air entering through the second and third air inlets is controlled by the movement of the sealing blocks. The double-headed cylinders are used to move the sealing blocks and are controlled by solenoid valves. The bolts are used to control the stroke of the double-headed cylinders, thereby changing the stroke by which the double-headed cylinders control the movement of the sealing blocks.

[0009] Preferably, a first rotating shaft is provided above the first sintering mesh, and multiple rotating plates are spirally arranged on the outer side of the first rotating shaft. A second rotating shaft is provided below the first sintering mesh, and an elliptical column is sleeved on the outer side of the second rotating shaft. The outer side of the elliptical column contacts the lower side of the first sintering mesh. The first rotating shaft and the elliptical column are rotatably connected within the housing. A conveyor belt connects the first rotating shaft and the elliptical column. The rotating plates and the first rotating shaft rotate in coordination to lift the molding sand on the first sintering mesh and move it to one side, so that the molding sand can be vertically blown up by gas. Then, the conveyor belt drives the second rotating shaft to rotate, which in turn drives the elliptical column to rotate. The rotation of the elliptical column contacts the lower side of the first sintering mesh, causing the first sintering mesh to move up and down and shake, preventing the molding sand on the first sintering mesh from being adsorbed.

[0010] Preferably, the rotating plate has an arc-shaped spiral structure. The rotation of multiple rotating plates on the first rotating shaft can lift the molding sand and drive the molding sand to one end. A sand discharge channel is provided between the rear side of the rotating plate and the cavity. A sand discharge valve is provided between the cavity and the outside of the base.

[0011] Preferably, the sand inlet section has multiple third sintering meshes around its interior perimeter, and a second connecting channel is provided on the lower side of the sand inlet section. The second connecting channel is connected to the outside of the base and has a fourth air inlet.

[0012] Preferably, a guide plate is inclined on the rear side of the inner wall of the box, and the guide plate has multiple holes.

[0013] Preferably, the upper side of each of the multiple conical holes in the pressure plate is provided with an annular component; the lower side of the base is provided with a hydraulic cylinder, and the output end of the hydraulic cylinder passes through the base and connects to the lower side of the housing.

[0014] Preferably, a second airflow channel is provided on both sides of the sand inlet, and the second airflow channel is connected to the first airflow channel. Beneficial effects

[0015] 1. The air intake is controlled by a two-control valve to achieve vertical upward injection of molding sand and to supply air to the periphery of the box, so as to facilitate molding sand injection and molding sand cleaning.

[0016] 2. The molding sand on the first sintering mesh is lifted up and moved to one side by rotating the rotating plate in conjunction with the first rotating shaft, so that the molding sand can be blown vertically by gas.

[0017] 3. The conveyor belt drives the second rotating shaft to rotate, which in turn drives the elliptical column to rotate. The rotation of the elliptical column contacts the lower side of the first sintering mesh, causing the first sintering mesh to move up and down and shake, so that the molding sand on the first sintering mesh cannot be adsorbed. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the isometric structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the front view structure of the present invention.

[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point A_A.

[0022] Figure 4 for Figure 3 A magnified view of the structure at point D in the middle.

[0023] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure at point B_B.

[0024] Figure 6 for Figure 5 A magnified view of the structure at point E in the middle.

[0025] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure at point C_C.

[0026] In the diagram, the components are: base 10, housing 11, two-control valve 12, fourth air inlet 13, sand inlet 14, first airflow channel 15, and cylinder.

[0027] 16. Third sintering mesh; 17. Gas cavity; 18. Second connecting channel; 19. First rotating shaft; 20. Rotating plate; 21. Second rotating shaft; 22. Elliptical column; 23. First sintering mesh; 24. Second airflow channel; 25. Second sintering mesh; 26. Guide plate; 27. Pressure plate; 28. Conveyor belt; 29. ​​Sand discharge channel; 30. Cavity; 31. Sand discharge valve; 32. Bolt; 33. Double-headed cylinder; 34. Sealing block; 35. First air inlet; 36. Second air inlet; 37. Third air inlet; 38. First connecting channel; 39. Sand box connecting block; 40. Sand box; 41. Annular part; 42. Conical hole; 43. Fixed frame; 44. Oil cylinder; 45. Air hole. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] Combination Figures 1 to 7 A compaction structure with air volume zone control includes a base 10, a box 11 on the upper side of the base 10, a pressure plate 28 on the upper side of the box 11, a plurality of conical holes 43 for sand injection in the pressure plate 28, a sand inlet 14 on one side of the box 11, a sand box connecting block 40 on the sand inlet 14, a sand box 41 connected to the sand box connecting block 40, a first sintered mesh 24 hinged to the lower side inside the box 11, a plurality of second sintered meshes 26 on the four sides inside the box 11, a first airflow channel 15 on the outer side of the box 11, and a two-control valve 12 on one side of the box 11. The two-control valve 12 controls the air intake below the first sintered mesh 24 and the air intake in the first airflow channel 15. There are air holes connecting the first airflow channel 15 and the second sintered meshes 26.

[0030] Furthermore, in combination Figures 1 to 7 The two-control valve 12 includes a fixed frame 44, and the fixed frame 44 has two air chambers 18 inside, which are connected in the gas phase. The air chambers 18 are connected to the outside of the fixed frame 44 and have a first air inlet 36. The base 10 is connected to the fixed frame 44 and has a second air inlet 37 and a third air inlet 38. The second air inlet 37 is connected to the lower side of the first sintered mesh 24 and has a cavity 31. The third air inlet 38 is connected to the first airflow channel 15 and has a first connecting channel 39. The first airflow channel 15 surrounds the outer side of the housing 11.

[0031] Furthermore, in combination Figures 1 to 7 Each of the two air chambers 18 is equipped with a sealing block 35 that slides within it. Two cylinders 16 are located on the outside of the air chambers 18. Each of the two cylinders 16 is equipped with a double-headed cylinder 34 that moves within it. One end of each double-headed cylinder 34 is connected to the sealing block 35, and the other end of each double-headed cylinder 34 is equipped with a bolt 33. Each bolt 33 is threadedly connected to the fixed frame 44.

[0032] Furthermore, in combination Figures 1 to 7A first rotating shaft 20 is provided above the first sintering mesh 24. Multiple rotating plates 21 are spirally arranged around the first rotating shaft 20. A second rotating shaft 22 is provided below the first sintering mesh 24. An elliptical column 23 is sleeved around the second rotating shaft 22. The outer side of the elliptical column 23 contacts the lower side of the first sintering mesh 24. The first rotating shaft 20 and the elliptical column 23 are rotatably connected inside the box 11. A conveyor belt 29 is connected between the first rotating shaft 20 and the elliptical column 23.

[0033] Furthermore, in combination Figures 1 to 7 The rotating plate 21 has an arc-shaped spiral structure. The rotation of multiple rotating plates 21 on the first rotating shaft 20 can lift the molding sand and drive the molding sand to one end. A sand discharge channel 30 is provided between the rear side of the rotating plate 21 and the cavity 31. A sand discharge valve 32 is provided between the cavity 31 and the outside of the base 10.

[0034] Furthermore, in combination Figures 1 to 7 The sand inlet section 14 has multiple third sintering meshes 17 around its interior. The sand inlet section 14 has a second connecting channel 19 on its lower side. The second connecting channel 19 is connected to the outside of the base 10 and has a fourth air inlet 13.

[0035] Furthermore, in combination Figures 1 to 7 The rear side of the inner wall of the box 11 is provided with a guide plate 27, and the guide plate 27 is provided with multiple holes 47.

[0036] Furthermore, in combination Figures 1 to 7 The upper side of the multiple conical holes 43 in the pressure plate 28 is provided with annular parts 42; the lower side of the base 10 is provided with a hydraulic cylinder 45, and the output end of the hydraulic cylinder 45 passes through the base 10 and is connected to the lower side of the box 11.

[0037] Furthermore, in combination Figures 1 to 7 The sand inlet section 14 is provided with a second airflow channel 25 on both sides, and the second airflow channel 25 is connected to the first airflow channel 15.

[0038] Working principle

[0039] The workers installed and connected the sand box 41 to the sand box connecting block 40, aligning the outlet on the sand box 41 with the sand inlet of the sand inlet 14. Then, compressed air was used to inject the molding sand in the sand box 41 into the sand inlet 14. The first air inlet 36 and the fourth air inlet 13 were respectively connected to air pumps.

[0040] The air pump draws air into the base 10 through the fourth air inlet 13. The air is then sprayed vertically upward from the lower side of the sand inlet 14 through the second connecting channel 19, loosening the molding sand in the sand inlet 14 and keeping it in a suspended state to prevent sand blockage and achieve efficient molding sand blowing. The operator controls the pneumatic stroke of the double-headed cylinder 34 by rotating the bolt 33. The double-headed cylinder 34 is started by the solenoid valve. The solenoid valve controls the start of the double-headed cylinder 34 on the side of the third air inlet 38, causing the sealing block 35 to move closer to the third air inlet 38, so that less air enters the first connecting channel 39 through the third air inlet 38. The solenoid valve controls the start of the sealing block 35 on the side of the second air inlet 37, so that the sealing block 35 moves away from the side of the second air inlet 37, so that more air enters the cavity 31 through the second air inlet 37.

[0041] After the molding sand ejected from the sand box 41 is horizontally blown, it enters the box body 11 through the sand inlet 14. The air in the cavity 31 enters the box body 11 and is ejected from the bottom of the first sintered mesh 24, so that the molding sand is ejected vertically upward. The ejected air drives the first rotating shaft 20 to rotate clockwise through the rotating plate 21. The rotation of the rotating plate 21 lifts and moves the molding sand on the first sintered mesh 24 so that the molding sand can be blown up by the air. The rotation of the first rotating shaft 20 drives the second rotating shaft 22 to rotate through the conveyor belt 29. The rotation of the second rotating shaft 22 drives the elliptical column 23 to rotate. The rotation of the elliptical column 23 causes the first sintered mesh 24 to shake up and down around the hinge. The shaking of the first sintered mesh 24 makes it difficult for the molding sand to adhere to the first sintered mesh 24. After the molding sand ejected from the sand box 41 is horizontally blown, it enters the box 11 through the sand inlet 14. The air blowing at the bottom of the box 11 and the guide plate 27 guide the molding sand to be redirected to be blown vertically upward.

[0042] The air pump draws air into the air chamber 18 through the first air inlet 36, and then into the first connecting channel 39 through the third air inlet 38. The air in the first connecting channel 39 enters the housing 11 from all sides through the first airflow channel 15. The circumferential air supply can prevent molding sand from sticking to the seat wall. The first airflow channel 15 is connected to the second airflow channel 25 so that air is sprayed out on both sides of the sand inlet 14 through the second airflow channel 25 to prevent molding sand from sticking to the side walls of the sand inlet 14.

[0043] After the chamber 11 is sandblasted, the pressure plate 28 is driven by the hydraulic cylinder 45 to compact the molding sand. Then, the inside of the chamber 11 is cleaned. The first connecting channel 39 is controlled to have a larger air intake by the two-control valve 12, and the cavity 31 stops air intake. The first rotating shaft 20 is driven to rotate counterclockwise by the rotating plate 21. Multiple rotating plates 21 rotate counterclockwise around the first rotating shaft 20, which rotates the molding sand on the first sintered mesh 24 to the side of the sand discharge channel 30. The molding sand enters the cavity 31 through the sand discharge channel 30. The sand discharge valve 32 is opened, and the two-control valve 12 controls the air intake into the cavity 31, which sprays the molding sand in the cavity 31 out through the sand discharge valve 32. The sand discharge valve 32 is then closed.

[0044] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A compaction structure under controlled air volume zoning, comprising a base (10), characterized in that, The base (10) has a box (11) on its upper side, and a pressure plate (28) on the upper side of the box (11). The pressure plate (28) has multiple conical holes (43) for sand injection. The box (11) has a sand inlet (14) on one side, and a sand box connecting block (40) is provided on the sand inlet (14). A sand box (41) is connected to the sand box connecting block (40). A first sintered mesh (24) is hinged to the lower side of the inside of the box (11). Multiple second sintered meshes (26) are provided around the inside of the box (11). A first airflow channel (15) is provided on the outside of the box (11). A two-control valve (12) is provided on one side of the box (11). The two-control valve (12) includes a fixed frame (44). The fixed frame (44) has two air chambers inside. (18) The two air chambers (18) are connected in the gas phase. The air chamber (18) is connected to the outside of the fixed frame (44) and is provided with a first air inlet (36). The base (10) is connected to the fixed frame (44) with a second air inlet (37) and a third air inlet (38). The second air inlet (37) is connected to the lower side of the first sintered mesh (24) and is provided with a cavity (31). The third air inlet (38) is connected to the first airflow channel (15) and is provided with a first connecting channel (39). The first airflow channel (15) surrounds the outer periphery of the box (11). The two-control valve (12) controls the air intake below the first sintered mesh (24) and the air intake in the first airflow channel (15). The first airflow channel (15) is connected to the second sintered mesh (26) with an air hole.

2. The compaction structure under air volume zoning control according to claim 1, characterized in that: The two air chambers (18) are each equipped with a sealing block (35) that slides within them. The air chambers (18) are equipped with two cylinders (16) on their outer sides. The two cylinders (16) are each equipped with a double-headed cylinder (34) that moves within them. One end of each double-headed cylinder (34) is connected to the sealing block (35), and the other end of each double-headed cylinder (34) is equipped with a bolt (33). Each bolt (33) is threadedly connected to the fixed frame (44).

3. The compaction structure under air volume zoning control according to claim 1, characterized in that: A first rotating shaft (20) is provided above the first sintered mesh (24). Multiple rotating plates (21) are spirally arranged on the outer side of the first rotating shaft (20). A second rotating shaft (22) is provided below the first sintered mesh (24). An elliptical column (23) is sleeved on the outer side of the second rotating shaft (22). The outer side of the elliptical column (23) is in contact with the lower side of the first sintered mesh (24). The first rotating shaft (20) and the elliptical column (23) are rotatably connected inside the box (11). A conveyor belt (29) is connected between the first rotating shaft (20) and the elliptical column (23).

4. The compaction structure under air volume zoning control according to claim 3, characterized in that: The rotating plate (21) has an arc-shaped spiral structure. The rotation of multiple rotating plates (21) on the first rotating shaft (20) can lift the molding sand and drive the molding sand to one end. A sand discharge channel (30) is provided between the rear side of the rotating plate (21) and the cavity (31). A sand discharge valve (32) is provided between the cavity (31) and the outside of the base (10).

5. The compaction structure under air volume zoning control according to claim 1, characterized in that: The sand inlet (14) is provided with multiple third sintering meshes (17) around its interior. The sand inlet (14) is provided with a second connecting channel (19) on its lower side. The second connecting channel (19) is connected to the outside of the base (10) and is provided with a fourth air inlet (13).

6. The compaction structure under air volume zoning control according to claim 1, characterized in that: The inner wall of the box (11) is inclined with a guide plate (27), and the guide plate (27) has multiple holes (47).

7. The compaction structure under air volume zoning control according to claim 1, characterized in that: The upper side of the multiple conical holes (43) in the pressure plate (28) is provided with an annular part (42); the lower side of the base (10) is provided with a hydraulic cylinder (45), and the output end of the hydraulic cylinder (45) passes through the base (10) and is connected to the lower side of the box (11).

8. The compaction structure under air volume zoning control according to claim 1, characterized in that: The sand inlet (14) is provided with a second airflow channel (25) on both sides, and the second airflow channel (25) is connected to the first airflow channel (15).

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