A lost foam casting equipment

Abstract

The present invention belongs to the technical field of casting processing, specifically a lost foam casting device, including a sand box, brackets are arranged on both sides of the sand box, a plurality of U-shaped holes are opened on the inner bottom wall of the sand box, an isolation frame is inserted into the inside of the U-shaped hole, a docking plate is arranged at the vertical opening of the isolation frame, and the bottom end of the docking plate is fixedly connected to the inner bottom wall of the sand box; the isolation frame cooperates with the docking plate to form an isolation area in the sand box; a fixed plate is arranged below the sand box, and a first hydraulic cylinder is arranged at the top of the fixed plate and below the isolation frame; the lost foam casting device described in the present invention, by arranging the isolation frame, when in use, the isolation frame cooperates with the docking plate to form an isolation area in the sand box, so that in the process of placing the lost foam and taking out the casting, it is not necessary to take out and add all the sand in the sand box; the operation complexity of the casting operation is reduced; and the casting efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of casting processing, in particular to a lost foam casting device. Background Art

[0002] Lost foam casting is a new process with nearly zero allowance and precise molding. This process does not require mold removal, parting surface, or sand core, so the casting has no flash, burrs, or draft angle, and reduces the dimensional error caused by the core combination. Compared with the traditional sand casting method, it can reduce the machining time by 40% to 50%. Specifically, when using the lost foam, the lost foam needs to be buried in the sand in the sand box.

[0003] The existing Chinese patent with announcement number CN219443364U discloses a lost foam casting sand box, comprising a casting sand box body, an exhaust pipe is fixedly installed and inserted below one side of the casting sand box body, a connecting groove is opened on the other side of the casting sand box body, a movable plate adapted thereto is arranged inside the connecting groove, a partition is fixedly installed on one side of the movable plate, and a third handle is fixedly installed on the other side of the movable plate;

[0004] The above scheme uses the casting sand box body, exhaust pipe, fixed groove, movable frame, cover plate, first handle, partition, first spring, fixed rod and other structures to make it very simple to disassemble the partition when the casting sand box body is in use. The partition can be disassembled by simply pulling down the limiting mechanism located on one side of the movable plate. However, in actual casting operations, the lost foam needs to be placed in the sand, and the casting needs to be taken out after the pouring is completed. The operating procedure requires the sand in the sand box to be injected and taken out. The whole process is relatively cumbersome, and the casting efficiency needs to be further improved.

[0005] To this end, the present invention provides a lost foam casting device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the lost foam casting equipment described in the present invention comprises a sand box, brackets are arranged on both sides of the sand box, a plurality of U-shaped holes are opened on the inner bottom wall of the sand box, an isolation frame is inserted into the inside of the U-shaped hole, a docking plate is arranged at the vertical opening of the isolation frame, and the bottom end of the docking plate is fixedly connected to the inner bottom wall of the sand box; the isolation frame cooperates with the docking plate to form an isolation area in the sand box;

[0008] A pad is provided below the sand box, a first hydraulic cylinder is provided at the top of the pad and below the isolation frame, a linkage plate is fixedly connected between the top of the output end of the first hydraulic cylinder and the bottom end of the isolation frame; a first valve is provided below the isolation area, the output end of the first valve is provided with a pre-storage bin, the outlet of the pre-storage bin is provided with a conveyor, the discharge end of the conveyor is provided with a return pipe, the end of the return pipe away from the conveyor is provided with a second valve, and the output end of the second valve passes through the interior of the sand box.

[0009] Preferably, the isolation frame and the docking plate are both made of high temperature resistant metal.

[0010] Preferably, a mesh plate is provided inside the isolation area, a connecting piece is provided at the bottom of the mesh plate, a second hydraulic cylinder is provided at the bottom of the sand box and below the connecting piece, and an output end of the second hydraulic cylinder passes through the interior of the sand box and is connected to the bottom of the connecting piece.

[0011] Preferably, a rotating shaft is inserted into the side of the docking plate, one end of the rotating shaft is located below the mesh plate, and the other end passes through the outside of the sand box; a plurality of stirring blades are evenly arranged on the annular circumference of the rotating shaft located below the mesh plate.

[0012] Preferably, a plurality of telescopic rods are provided at the bottom end of the mesh plate, and when the rotating shaft drives the stirring piece to rotate, the end of the stirring piece can collide with the bottom end of the telescopic rod.

[0013] Preferably, the top end of the isolation frame is configured to be pointed.

[0014] Preferably, a vent is provided on the side of the docking plate, and a receiving frame is provided in communication with the vent on the side away from the isolation frame, a nozzle is installed inside the receiving frame, and the nozzle is externally connected to an air pump.

[0015] Preferably, a flexible plate is provided on the side of the vent facing the isolation frame, and flexible bristles are provided on the side of the flexible plate facing the isolation frame; a pair of connecting rods are provided at both ends of the flexible plate, and the ends of the connecting rods away from the flexible plate pass through to the other side of the docking plate; a connecting spring is provided at the end of the connecting rod away from the flexible plate, and a fixing frame is provided at the end of the connecting spring away from the connecting rod, and the fixing frame is fixedly connected to the side of the docking plate.

[0016] Preferably, a fixing strip is provided on one side of the docking plate facing the isolation frame and above the vent, and a flexible metal foil is provided at the bottom end of the fixing strip, and initially the metal foil covers the flexible bristles on the flexible plate.

[0017] Preferably, the connecting member includes a connecting plate and a screw; the connecting plate is connected to the top end of the output end of the second hydraulic cylinder, the bottom end of the screw is rotatably connected to the top end of the connecting plate, the top end is fixed to the center of the bottom end of the mesh plate, and the mesh plate is circular; the outer side of the screw is meshed with a threaded barrel; a fixing plate is arranged between the side of the threaded barrel and the docking plate.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The lost foam casting equipment described in the present invention is provided with an isolation frame. When in use, the isolation frame cooperates with the docking plate to form an isolation area in the sand box, so that in the process of placing the lost foam and taking out the casting, it is not necessary to take out and add all the sand in the sand box; the operation complexity of the casting operation is reduced; and the casting efficiency is improved.

[0020] 2. The lost foam casting equipment described in the present invention, by setting a mesh plate, when the lost foam is placed in the isolation area, the mesh plate is driven to move upward by the second hydraulic cylinder and the connecting piece, and stops when the mesh plate moves to the top of the isolation area. Then the staff places the lost foam on the top of the mesh plate, and then controls the mesh plate to descend. When the lost foam descends to the sand in the isolation area, the mesh plate is continuously controlled to move downward, so that there is enough sand between the bottom end of the lost foam and the mesh plate; when the casting is completed, the mesh plate is controlled to move upward, and the casting is lifted up by the mesh plate, and stops when the casting leaves the isolation area. Then the staff takes the casting out of the sand box; the whole process is convenient for the staff to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a schematic top view of the sand box of the present invention;

[0024] Figure 3 It is a schematic diagram of the bottom structure of the sand box of the present invention;

[0025] Figure 4 It is a schematic diagram of the isolation frame connection structure of the present invention;

[0026] Figure 5 It is a side schematic diagram of the isolation frame connection structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the connection structure of the butt-jointed plates of the present invention;

[0028] Figure 7 It is a side view schematic diagram of the butt-jointed plate connection structure of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection structure between the screw and the threaded barrel of the present invention;

[0030] Fig. 9 It is a schematic diagram of the position of the receiving frame on the docking plate of the present invention;

[0031] Fig.10 It is a schematic diagram of the position of the vents on the docking plate of the present invention;

[0032] Fig.11 It is a schematic diagram of the connection structure of the receiving frame of the present invention;

[0033] Fig.12 It is a front schematic diagram of the butt-jointed plate connection structure of the present invention.

[0034] In the figure: 1. sand box; 11. U-shaped hole; 12. isolation frame; 121. first hydraulic cylinder; 13. docking plate; 131. vent; 132. receiving frame; 133. nozzle; 2. fixed plate; 21. conveyor; 22. return pipe; 23. second valve; 24. pre-storage bin; 25. first valve; 3. second hydraulic cylinder; 31. connecting plate; 32. screw; 33. mesh plate; 4. rotating shaft; 41. stirring plate; 5. telescopic rod; 6. flexible plate; 61. connecting rod; 62. connecting spring; 63. fixing frame; 7. fixing strip; 71. metal foil; 8. threaded barrel; 81. fixing plate. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 5 As shown, a lost foam casting device according to an embodiment of the present invention comprises a sand box 1, brackets are arranged on both sides of the sand box 1, a plurality of U-shaped holes 11 are opened on the inner bottom wall of the sand box 1, an isolation frame 12 is inserted into the inside of the U-shaped hole 11, a docking plate 13 is arranged at the vertical opening of the isolation frame 12, and the bottom end of the docking plate 13 is fixedly connected to the inner bottom wall of the sand box 1; the isolation frame 12 cooperates with the docking plate 13 to form an isolation area in the sand box 1;

[0037] A pad 2 is provided below the sand box 1, a first hydraulic cylinder 121 is provided at the top of the pad 2 and below the isolation frame 12, a linkage plate is fixedly connected between the top of the output end of the first hydraulic cylinder 121 and the bottom end of the isolation frame 12; a first valve 25 is provided below the isolation area, the output end of the first valve 25 is provided with a pre-storage bin 24, the outlet of the pre-storage bin 24 is provided with a conveyor 21, the discharge end of the conveyor 21 is provided with a return pipe 22, the end of the return pipe 22 away from the conveyor 21 is provided with a second valve 23, the output end of the second valve 23 passes through the interior of the sand box 1;

[0038] During the casting process, the staff buries the lost foam in the sand in the sand box 1. Later, when taking out the casting, the sand in the sand box 1 needs to be taken out. The whole process is relatively cumbersome, and the efficiency of casting needs to be further improved. To solve the above problems, the embodiment of the present invention provides an isolation frame 12. Specifically, when in use, sand is first added to the sand box 1. Then, when casting, the isolation frame 12 is first restricted in the sand box 1 by the first hydraulic cylinder 121 and the linkage plate, so that the isolation frame 12 cooperates with the docking plate 13 to form an isolation area in the sand box 1. Then, the first valve 25 is opened. The connection between the first valve 25 and the sand box 1 is in the isolation area, so the sand in the isolation area falls into the pre-storage bin 24 through the first valve 25. , then when the sand in the isolation area is reduced to a certain amount, it stops, that is, the first valve 25 is closed, and the lost foam is placed on the sand in the isolation area. Then, the first hydraulic cylinder 121 cooperates with the linkage plate to drive the isolation frame 12 to move downward through the U-shaped hole 11, so that the isolation area disappears, and the sand in other positions in the sand box 1 will enter the original isolation area to cover the lost foam; specifically, the isolation frame 12 does not need to be completely pulled out of the sand box 1, but only needs to be moved to the position below the lost foam; then the second valve 23 is opened and the conveyor 21 is started, and the conveyor 21 sends the sand in the pre-storage bin 24 back to the sand box 1 through the return pipe 22 and the second valve 23; after the conveying is completed, the second valve 23 and the conveyor are closed. Machine 21; It should be pointed out that, in order to ensure that the lost foam can be fully covered by the sand in the sand box 1 when the isolation frame 12 moves downward, the staff needs to place the lost foam close to the isolation frame 12 when placing the lost foam, and there is sufficient space between the lost foam and the docking plate 13, so that when the sand in the sand box 1 flows into the isolation area, the space between the lost foam and the docking plate 13 can be filled to prevent the lost foam from adhering to the surface of the docking plate 13 and affecting the casting effect; after the lost foam is fully covered with sand, liquid metal is injected into the opening of the lost foam by the pouring machine, and then after the casting is cooled, the isolation frame 12 is driven to reset and move by the first hydraulic cylinder 121 and the linkage plate, so that the isolation frame 12 and the docking plate 13 are re-placed in the sand box 1 An isolation area is formed, and the cooled casting is located in the isolation area. Then, the first valve 25 and the second valve 23 are opened, and the conveyor 21 is started at the same time. The conveyor 21 transports the sand in the isolation area to the outside of the isolation area in the sand box 1. Then the staff can take out the casting in the isolation area. The above process can be repeated when the lost foam casting is performed again. The whole process does not require the removal and addition of all the sand in the sand box 1. The operation complexity of the casting operation is reduced, and the casting efficiency is improved. It should be pointed out that the start-up time of the conveyor 21 is obtained through preliminary tests, and the error in the discharge amount when the sand is discharged through the isolation area will not affect the overall casting effect. In addition, the lost foam will directly vaporize and disappear when used.

[0039] The isolation frame 12 and the docking plate 13 are both made of high-temperature resistant metal; when in use, the sand in the sand box 1 will be subjected to high temperature, and the high temperature will be transmitted to the isolation frame 12 and the docking plate 13, so making the isolation frame 12 and the docking plate 13 of high-temperature resistant metal is beneficial to improving the service life of the overall equipment.

[0040] like Figures 3 to 8 As shown, a mesh plate 33 is provided inside the isolation area, and a connecting piece is provided at the bottom end of the mesh plate 33. A second hydraulic cylinder 3 is provided at the bottom end of the sand box 1 and below the connecting piece. The output end of the second hydraulic cylinder 3 passes through the interior of the sand box 1 and is connected to the bottom end of the connecting piece. When the lost foam is placed in the isolation area, the mesh plate 33 is driven to move upward by the second hydraulic cylinder 3 and the connecting piece, and stops when the mesh plate 33 moves to the top of the isolation area. Then the staff places the lost foam on the top of the mesh plate 33, and then controls the mesh plate 33 to descend. When the lost foam descends onto the sand in the isolation area, the mesh plate 33 is continued to be controlled to move downward, so that there is enough sand between the bottom end of the lost foam and the mesh plate 33. When the casting is completed, the mesh plate 33 is controlled to move upward, and the casting is lifted up by the mesh plate 33, and stops when the casting leaves the isolation area. Then the staff takes the casting out of the sand box 1. The whole process facilitates the operation of the staff.

[0041] A rotating shaft 4 is inserted into the side of the docking plate 13, one end of the rotating shaft 4 is located below the mesh plate 33, and the other end passes through the outside of the sand box 1; a plurality of stirring blades 41 are evenly arranged on the annular surface of the rotating shaft 4 located below the mesh plate 33; an end of the rotating shaft 4 located outside the sand box 1 is externally connected to a motor; when taking out the casting in the isolation area, the sand in the isolation area needs to be discharged. Specifically, when discharging the sand in the isolation area, the motor externally connected to the rotating shaft 4 is started, and the motor drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the stirring blades 41 to rotate in the isolation area, driving the sand in the isolation area to move, so as to prevent the sand from being squeezed into a mass and difficult to discharge.

[0042] A plurality of telescopic rods 5 are provided at the bottom end of the mesh plate 33. When the rotating shaft 4 drives the stirring piece 41 to rotate, the end of the stirring piece 41 can collide with the bottom end of the telescopic rod 5. When the rotating shaft 4 drives the stirring piece 41 to rotate, the stirring piece 41 intermittently collides with the bottom end of the telescopic rod 5. The vibration generated by the telescopic rod 5 is transmitted to the mesh plate 33, so that the sand above the mesh plate 33 is accelerated to fall downward through the mesh plate 33, thereby improving the smoothness of the sand discharge from the isolation area.

[0043] The top of the isolation frame 12 is set to be pointed; when the isolation frame 12 is controlled to move upward, the pointed shape of the top of the isolation frame 12 can prevent sand from staying on the top of the isolation frame 12 and reduce the resistance encountered by the isolation frame 12 when moving in the sand, which is beneficial to improving the smoothness of the movement of the isolation frame 12.

[0044] like Figures 6 to 12As shown, a vent 131 is provided on the side of the docking plate 13, and a receiving frame 132 is connected to the vent 131 on the side away from the isolation frame 12. A nozzle 133 is installed inside the receiving frame 132, and the nozzle 133 is externally connected to an air pump. When the casting is taken out of the isolation area through the mesh plate 33, the air pump externally connected to the nozzle 133 is started, and the nozzle 133 discharges airflow into the isolation area through the vent 131. The airflow acts on the surface of the casting, and the sand remaining on the surface of the casting is blown off, which is convenient for the subsequent cleaning of the casting.

[0045] A flexible plate 6 is provided on the side of the vent 131 facing the isolation frame 12, and flexible bristles are provided on the side of the flexible plate 6 facing the isolation frame 12; a pair of connecting rods 61 are provided at both ends of the flexible plate 6, and the end of the connecting rod 61 away from the flexible plate 6 passes through the other side of the docking plate 13; a connecting spring 62 is provided at the end of the connecting rod 61 away from the flexible plate 6, and a fixing frame 63 is provided at the end of the connecting spring 62 away from the connecting rod 61, and the fixing frame 63 is fixedly connected to the side of the docking plate 13; when the nozzle 133 sprays, the flexible plate 6 is driven by the airflow, driving the connecting rod 61 to move synchronously, and at the same time pulling the connecting spring 62, when the flexible plate 6 contacts the casting on the mesh plate 33, the flexible plate 6 is deformed, and the flexible bristles on its surface cover the surface of the casting, and as the casting moves upward, the sand on the surface of the casting is cleaned, thereby improving the cleaning effect.

[0046] A fixing strip 7 is provided on one side of the docking plate 13 facing the isolation frame 12 and above the vent 131. A flexible metal foil 71 is provided at the bottom end of the fixing strip 7. Initially, the metal foil 71 covers the flexible bristles on the flexible plate 6 to prevent liquid metal from splashing onto the flexible bristles when pouring liquid metal.

[0047] The connecting part includes a connecting plate 31 and a screw rod 32; the connecting plate 31 is connected to the top end of the output end of the second hydraulic cylinder 3, the bottom end of the screw rod 32 is rotatably connected to the top end of the connecting plate 31, and the top end is fixed to the center of the bottom end of the mesh plate 33, and the mesh plate 33 is circular; the outer side of the screw rod 32 is meshed with a threaded tube 8; a fixing plate 81 is provided between the side of the threaded tube 8 and the docking plate 13; when the mesh plate 33 moves upward, the output end of the second hydraulic cylinder 3 drives the screw rod 32 to move upward through the connecting plate 31, and the screw rod 32 meshes with the threaded tube 8 when moving, so that the screw rod 32 drives the mesh plate 33 to rotate, and then when the mesh plate 33 drives the casting to move upward, it drives the casting to rotate, so that the surface of the casting is fully in contact with the flexible bristles on the flexible plate 6, further improving the cleaning effect of the casting.

[0048] During operation, during the casting process, the staff buries the lost foam in the sand in the sand box 1. Later, when taking out the casting, the sand in the sand box 1 needs to be taken out. The whole process is relatively cumbersome, and the efficiency of casting needs to be further improved. To solve the above problems, the embodiment of the present invention provides an isolation frame 12. Specifically, when in use, sand is first added to the sand box 1. Later, when casting is performed, the isolation frame 12 is first restricted in the sand box 1 by the first hydraulic cylinder 121 and the linkage plate, so that the isolation frame 12 cooperates with the docking plate 13 to form an isolation area in the sand box 1. Then, the first valve 25 is opened. The connection between the first valve 25 and the sand box 1 is in the isolation area, so the sand in the isolation area passes through the first hydraulic cylinder 121 and the linkage plate. A valve 25 falls into the pre-storage bin 24, and then stops when the sand in the isolation area is reduced to a certain amount, that is, the first valve 25 is closed. At this time, the lost foam is placed on the sand in the isolation area, and then the first hydraulic cylinder 121 cooperates with the linkage plate to drive the isolation frame 12 to move downward through the U-shaped hole 11, so that the isolation area disappears, and the sand in other positions in the sand box 1 will enter the original isolation area to cover the lost foam; specifically, the isolation frame 12 does not need to be completely pulled out of the sand box 1, but only needs to be moved to the position below the lost foam; then the second valve 23 is opened and the conveyor 21 is started, and the conveyor 21 sends the sand in the pre-storage bin 24 through the return pipe 22 and the second valve 23 Return to the sand box 1; after the conveying is completed, close the second valve 23 and the conveyor 21; it should be pointed out that in order to ensure that the lost foam can be fully covered by the sand in the sand box 1 when the isolation frame 12 moves downward, the staff needs to place the lost foam close to the isolation frame 12 when placing the lost foam, and there is sufficient space between the lost foam and the docking plate 13, so that when the sand in the sand box 1 flows into the isolation area, the space between the lost foam and the docking plate 13 can be filled to prevent the lost foam from adhering to the surface of the docking plate 13 and affecting the casting effect; after the lost foam is fully covered with sand, liquid metal is injected into the opening of the lost foam through the pouring machine, and then after the casting is cooled, the first hydraulic cylinder 121 and the linkage plate The isolation frame 12 is driven to reset and move, so that the isolation frame 12 and the docking plate 13 form an isolation area in the sand box 1 again, and the cooled casting is located in the isolation area. Then, the first valve 25 and the second valve 23 are opened, and the conveyor 21 is started at the same time. The conveyor 21 conveys the sand in the isolation area to the outside of the isolation area in the sand box 1, and then the staff can take out the casting in the isolation area; the above process can be repeated when the lost foam casting is performed again; it should be pointed out that the start time of the conveyor 21 is obtained through preliminary tests, and the error in the discharge amount when the sand is discharged through the isolation area will not affect the overall casting effect; in addition, the lost foam will directly gasify and disappear when used;

[0049] When the lost foam is placed in the isolation area, the mesh plate 33 is driven to move upward by the second hydraulic cylinder 3 and the connecting piece, and stops when the mesh plate 33 moves to the top of the isolation area. Then the staff places the lost foam on the top of the mesh plate 33, and then controls the mesh plate 33 to descend. When the lost foam descends to the sand in the isolation area, the mesh plate 33 is continued to be controlled to move downward so that there is enough sand between the bottom of the lost foam and the mesh plate 33. When the casting is completed, the mesh plate 33 is controlled to move upward, and the casting is lifted up by the mesh plate 33, and stops when the casting leaves the isolation area. Then the staff The casting is taken out of the sand box 1; the whole process is convenient for the staff to operate; when taking out the casting in the isolation area, the sand in the isolation area needs to be discharged. Specifically, when discharging the sand in the isolation area, the motor connected to the rotating shaft 4 is started, and the motor drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the stirring piece 41 to rotate in the isolation area, driving the sand in the isolation area to move, and preventing the sand from being squeezed into a mass and difficult to discharge; when the rotating shaft 4 drives the stirring piece 41 to rotate, the stirring piece 41 intermittently hits the bottom end of the telescopic rod 5, and the vibration generated by the telescopic rod 5 is transmitted to the mesh plate 33, so that the mesh plate The sand above 33 is accelerated to fall downward through the mesh plate 33, thereby improving the smoothness of sand discharge in the isolation area; when the casting is taken out of the isolation area through the mesh plate 33, the air pump connected to the nozzle 133 is started, and the nozzle 133 discharges air into the isolation area through the vent 131, and the air flow acts on the surface of the casting, blowing the sand remaining on the surface of the casting off, thereby facilitating the cleaning of the casting later; when the nozzle 133 sprays air, the flexible plate 6 is driven by the air flow, driving the connecting rod 61 to move synchronously, and at the same time pulling the connecting spring 62, so that the flexible plate 6 and the mesh plate 33 are connected. When the casting is in contact, the flexible plate 6 is deformed, and the flexible bristles on its surface cover the surface of the casting. As the casting moves upward, the sand on the surface of the casting is cleaned, thereby improving the cleaning effect. When the mesh plate 33 moves upward, the output end of the second hydraulic cylinder 3 drives the screw 32 to move upward through the connecting plate 31. When the screw 32 moves, it engages with the threaded barrel 8 for transmission, so that the screw 32 drives the mesh plate 33 to rotate, and then when the mesh plate 33 drives the casting to move upward, it drives the casting to rotate, so that the surface of the casting is fully in contact with the flexible bristles on the flexible plate 6, further improving the cleaning effect of the casting.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lost foam casting equipment, characterized in that: The invention comprises a sand box (1), wherein brackets are arranged on both sides of the sand box (1), a plurality of U-shaped holes (11) are opened on the inner bottom wall of the sand box (1), an isolation frame (12) is inserted into the inside of the U-shaped hole (11), a docking plate (13) is arranged at the vertical opening of the isolation frame (12), and the bottom end of the docking plate (13) is fixedly connected to the inner bottom wall of the sand box (1); the isolation frame (12) cooperates with the docking plate (13) to form an isolation area in the sand box (1); A pad (2) is provided below the sand box (1), a first hydraulic cylinder (121) is provided at the top of the pad (2) and below the isolation frame (12), a linkage plate is fixedly connected between the top of the output end of the first hydraulic cylinder (121) and the bottom end of the isolation frame (12); a first valve (25) is provided below the isolation area, the output end of the first valve (25) is provided with a pre-storage bin (24), the outlet of the pre-storage bin (24) is provided with a conveyor (21), the discharge end of the conveyor (21) is provided with a return pipe (22), the end of the return pipe (22) away from the conveyor (21) is provided with a second valve (23), the output end of the second valve (23) passes through the interior of the sand box (1).

2. The lost foam casting equipment according to claim 1, characterized in that: The isolation frame (12) and the docking plate (13) are both made of high temperature resistant metal.

3. The lost foam casting equipment according to claim 1, characterized in that: A mesh plate (33) is arranged inside the isolation area, a connecting piece is arranged at the bottom end of the mesh plate (33), a second hydraulic cylinder (3) is arranged at the bottom end of the sand box (1) and below the connecting piece, and an output end of the second hydraulic cylinder (3) passes through the interior of the sand box (1) and is connected to the bottom end of the connecting piece.

4. The lost foam casting equipment according to claim 3, characterized in that: A rotating shaft (4) is inserted into the side of the docking plate (13), one end of the rotating shaft (4) is located below the mesh plate (33), and the other end passes through the outside of the sand box (1); a plurality of stirring blades (41) are evenly arranged on the annular circumferential surface of the rotating shaft (4) located below the mesh plate (33).

5. The lost foam casting equipment according to claim 4, characterized in that: A plurality of telescopic rods (5) are arranged at the bottom end of the mesh plate (33), and when the rotating shaft (4) drives the stirring piece (41) to rotate, the end of the stirring piece (41) can collide with the bottom end of the telescopic rod (5).

6. The lost foam casting equipment according to claim 1, characterized in that: The top end of the isolation frame (12) is configured to be pointed.

7. The lost foam casting equipment according to claim 3, characterized in that: A vent (131) is provided on the side of the docking plate (13); a receiving frame (132) is provided in communication with the vent (131) on the side away from the isolation frame (12); a spray head (133) is installed inside the receiving frame (132); and the spray head (133) is externally connected to an air pump.

8. The lost foam casting equipment according to claim 7, characterized in that: A flexible plate (6) is arranged on the side of the vent (131) facing the isolation frame (12), and flexible bristles are arranged on the side of the flexible plate (6) facing the isolation frame (12); a pair of connecting rods (61) are arranged at both ends of the flexible plate (6), and the ends of the connecting rods (61) away from the flexible plate (6) pass through to the other side of the docking plate (13); a connecting spring (62) is arranged on the end of the connecting rod (61) away from the flexible plate (6), and a fixing frame (63) is arranged on the end of the connecting spring (62) away from the connecting rod (61), and the fixing frame (63) is fixedly connected to the side of the docking plate (13).

9. The lost foam casting equipment according to claim 8, characterized in that: A fixing strip (7) is provided on one side of the docking plate (13) facing the isolation frame (12) and above the vent (131), and a flexible metal foil (71) is provided at the bottom end of the fixing strip (7). Initially, the metal foil (71) covers the flexible bristles on the flexible plate (6).

10. The lost foam casting equipment according to claim 9, characterized in that: The connecting member comprises a connecting plate (31) and a screw rod (32); the connecting plate (31) is connected to the top end of the output end of the second hydraulic cylinder (3); the bottom end of the screw rod (32) is rotatably connected to the top end of the connecting plate (31), and the top end is fixedly connected to the center of the bottom end of a mesh plate (33), and the mesh plate (33) is circular; the outer side of the screw rod (32) is meshedly sleeved with a threaded barrel (8); a fixing plate (81) is provided between the side surface of the threaded barrel (8) and the docking plate (13).

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