A gravity continuous sand adding device

Abstract

The present application relates to a gravity continuous sand adding device, and relates to the technical field of alloy casting manufacturing, which includes a bracket and a sand feeding hopper arranged on the bracket, the bottom end of the sand feeding hopper is connected with a sand conveying pipe, a lifting cylinder is arranged on the bracket, the bottom end of the lifting cylinder is fixed to the bracket, and the piston rod of the lifting cylinder is connected to the sand feeding hopper; the sand conveying pipe includes a vertical pipe, a rotating pipe, a bellows and an inclined pipe, the vertical pipe is connected to the bottom end of the sand feeding hopper, the rotating pipe is sleeved on the vertical pipe and is rotatably connected to the vertical pipe, a rotating assembly is arranged between the rotating pipe and the vertical pipe, the bellows is connected and arranged between the rotating pipe and the inclined pipe, and a tilting assembly is arranged between the rotating pipe and the inclined pipe. The present application has the effect of facilitating the docking of mold sand boxes of different specifications and shapes at different positions, and improving the convenience of operation and the applicability of the device.

Description

Technical Field

[0001] The present application relates to the technical field of alloy casting manufacturing, and in particular to a gravity continuous sand feeding device. Background Art

[0002] At present, the traditional alloy manufacturing industry still relies heavily on forming molds, and qualified molds are necessary to manufacture qualified products, and various types of sandboxes will also be used. The main manufacturing process is as follows: first, draw a 1:1 scale mold drawing of the product according to the needs, make the foam board into a proportional foam model, coat it with special high-temperature resistant materials, put it into the mold sandbox, and then use the method of filling sand in vibration to compact the mold model around. When the dry sand is compacted and formed, inject molten metal to gasify the foam model and obtain a metal casting in proportion to the molten metal.

[0003] In the related art, a sand adding device is designed, which includes a bracket and a sand feeding hopper arranged on the bracket. The bottom end of the sand feeding hopper is connected to a sand conveying pipe, and a valve is arranged on the sand conveying pipe. A large amount of resin sand is stored in the sand feeding hopper by adding resin sand from the upper end of the sand feeding hopper. When adding sand, the sand conveying pipe and the mold sand box are connected to each other, and the valve is opened. Under the action of gravity, the resin sand in the sand feeding hopper flows into the mold sand box through the sand conveying pipe.

[0004] With regard to the above-mentioned related technologies, the sand conveying pipe and the sand inlet hopper are fixed to each other, and the sand conveying pipe can only be docked with a mold sand box of a fixed shape at a fixed position. The sand conveying pipe is not convenient for docking mold sand boxes of different specifications and shapes. The operation is cumbersome and the applicability is limited, so it needs to be improved. Summary of the invention

[0005] The purpose of the present application is to provide a gravity continuous sand adding device, which is convenient for docking mold sand boxes of different specifications and shapes at different positions, thereby improving the convenience of operation and the applicability of the device.

[0006] The present application provides a gravity continuous sand adding device adopting the following technical solution:

[0007] It includes a bracket and a sand feeding hopper arranged on the bracket, the bottom end of the sand feeding hopper is connected to a sand conveying pipe, the bracket is provided with a lifting cylinder, the bottom end of the lifting cylinder is fixed to the bracket, and the piston rod of the lifting cylinder is connected to the sand feeding hopper; the sand conveying pipe includes a vertical pipe, a rotating pipe, a bellows and an inclined pipe, the vertical pipe is connected to the bottom end of the sand feeding hopper, the rotating pipe is sleeved on the vertical pipe and rotatably connected to the vertical pipe, a rotating assembly is arranged between the rotating pipe and the vertical pipe, and the rotating assembly is used to drive the rotating pipe to rotate with the vertical pipe; the bellows is connected and arranged between the rotating pipe and the inclined pipe, a tilting assembly is arranged between the rotating pipe and the inclined pipe, and the tilting assembly is used to control the tilt angle between the inclined pipe and the rotating pipe.

[0008] By adopting the above technical scheme, when the sand conveying pipe of the present device is used to connect with different mold sand boxes, the piston rod of the lifting cylinder can be extended and retracted to drive the sand inlet hopper to move in the vertical direction, thereby changing the height of the lowest end of the sand conveying pipe, which is convenient for connecting with mold sand boxes at different heights; or the rotating tube and the vertical tube can be driven to rotate by the rotating component to change the direction of the inclined tube, which is convenient for connecting with mold sand boxes at different positions; or the inclination angle between the inclined tube and the rotating tube can be adjusted by the inclined component to change the inclination angle of the inclined tube, while the corrugated tube can always keep the rotating tube and the inclined tube connected, thereby facilitating the connection between the sand conveying pipe and mold sand boxes of different specifications and shapes at different positions, thereby improving the convenience of use and scope of application of the device.

[0009] Optionally, the rotating assembly includes a first motor, a driving gear and a driven gear, the first motor is arranged on the side wall of the vertical tube, the driving shaft of the first motor is interconnected with the driving gear, the driven gear is arranged on the side wall of the rotating tube, and the driven gear and the driving gear are meshed with each other.

[0010] By adopting the above technical solution, when it is necessary to control the rotation between the rotating tube and the vertical tube, the first motor drives the driving gear to rotate, and the driving gear then abuts against the driven gear, thereby driving the rotating tube and the inclined tube on the rotating tube to rotate together, and the control is convenient and quick.

[0011] Optionally, the tilting assembly includes a connecting rod, a first connecting block, a second motor, a screw rod, a second connecting block and a sliding block, the top end of the connecting rod is fixed to the top end of the bellows, the bottom end of the connecting rod is fixed to the first connecting block, and the first connecting block and the bottom end of the bellows are hinged to each other; the second connecting block is hingedly arranged at the bottom end of the bellows, the second connecting block is symmetrically arranged with the first connecting block, a sliding groove is penetrated on the second connecting block, and the sliding block is slidably arranged in the sliding groove; the second motor is fixedly arranged on the side wall of the rotating tube, the driving shaft of the second motor is interconnected with the screw rod, and the screw rod penetrates the sliding block and is threadedly connected to the sliding block.

[0012] By adopting the above technical scheme, when the inclination angle between the inclined tube and the rotating tube needs to be adjusted, the second motor drives the screw to rotate, the screw is threadedly connected to the sliding block, the sliding block is guided to slide on the outer wall of the screw, and the sliding block slides in the sliding groove along the length direction of the sliding groove. When the sliding block slides, it drives the second connecting block to rise and fall in the vertical direction, so that the second connecting block can rotate with the bottom end of the corrugated tube, and the first connecting block rotates with the bottom end of the corrugated tube, thereby realizing the change of the inclination angle of the inclined tube, and the connection and inclination of the inclined tube are realized by the first connecting block and the second connecting block, the control is convenient and fast, and the implementation cost is low.

[0013] Optionally, a limiting groove is provided on the inner side wall of the sliding groove, a limiting block is integrally provided on the side wall of the sliding block, the limiting block is slidingly provided in the limiting groove, and a plurality of guide balls are rotatably provided in the limiting groove and abut against the surface of the limiting block.

[0014] By adopting the above technical solution, when the screw rotates to drive the sliding block to slide, the limit block slides in the limit groove, and the guide ball can reduce the friction between the limit block and the inner wall of the limit groove, making it convenient for the sliding block to slide along the length direction of the sliding groove.

[0015] Optionally, a mounting frame is provided on the side wall of the rotating tube, a sleeve is provided on the mounting frame, an impact rod is passed through the sleeve, an abutment spring is provided in the sleeve that abuts against the impact rod, and an impact ball is provided at the end of the impact rod facing the rotating tube; a rotating disk is also rotatably provided on the mounting frame, a linkage block is provided on the rotating disk, a linkage rod is provided between the linkage block and the impact rod, one end of the linkage rod is hinged to the linkage block, and the other end of the linkage rod is hinged to the impact rod; a rotating shaft is also rotatably provided on the mounting frame, and an abutment block that can abut against the linkage block is provided on the rotating shaft; a linkage assembly is provided between the mounting frame and the screw rod, and the linkage assembly is used to drive the rotating shaft to rotate when the screw rod rotates.

[0016] By adopting the above technical scheme, when the screw rod rotates to change the inclination angle between the inclined tube and the rotating tube, the linkage assembly drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the abutment block to rotate. When the abutment block abuts against the linkage block, the abutment block can drive the rotating disk to rotate. At this time, the linkage rod and the linkage block rotate, and the linkage rod pulls the impact rod to make the impact rod slide on the sleeve in the direction away from the rotating tube. At this time, the spring in the sleeve will be compressed; the abutment block drives the rotating disk to rotate continuously, and when the linkage block rotates with the rotating disk to the farthest distance from the rotating tube, the spring in the sleeve is compressed to the optimal force storage state. After the abutment block rotates continuously, the elastic force of the abutment spring will be released, driving the impact ball to hit the rotating tube, causing the rotating tube to vibrate; in this way, when the screw rod rotates continuously, the impact rod can be driven to continuously store and release force, so that the impact ball continuously hits the rotating tube, and the vibration of the rotating tube can effectively reduce the blockage, thereby reducing the blockage of the sand transport pipe when adjusting the inclination angle between the inclined tube and the rotating tube.

[0017] Optionally, the linkage assembly includes a driving bevel gear and a driven bevel gear, the driving bevel gear is arranged on the side wall of the screw rod, and the driven bevel gear is arranged at one end of the rotating shaft away from the abutment block, and the driven bevel gear and the driving bevel gear are meshed with each other.

[0018] By adopting the above technical solution, when the screw rod rotates, it drives the active bevel gear to rotate, and the active bevel gear and the driven bevel gear are against each other, driving the driven bevel gear and the rotating shaft to rotate. In this way, when the screw rod rotates, it drives the rotating shaft to rotate continuously, and the rotating shaft drives the abutment block to continuously abut against the linkage block, so that the impact rod on the sleeve continuously accumulates and releases force, effectively saving the manufacturing cost of the device.

[0019] Optionally, a guide surface is provided at the bottom end of the inclined tube, a sealing ring is provided at the lowest end of the guide surface, a cylinder is provided on the side wall of the inclined tube, a piston rod of the cylinder is connected to a bending rod, the bending rod extends into the inclined tube and is connected to a sealing cone, and the side wall of the sealing cone is against the sealing ring.

[0020] By adopting the above technical solution, the piston rod of the cylinder is extended and retracted to drive the bending rod to slide, so that the sealing cone is close to or away from the sealing ring. The size of the gap between the sealing cone and the sealing ring is automatically controlled by the cylinder, which is conducive to controlling the discharge speed. The control is convenient and quick, and the sealing effect is good.

[0021] Optionally, a group of sealing plates are provided on the bending rod, and the sealing plates are in contact with the inner wall and the outer wall of the inclined tube.

[0022] By adopting the above technical solution, the sealing plate can seal the gap between the bending rod and the inclined tube, facilitating the sliding of the bending rod while ensuring the sealing effect.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the sand feeding hopper, sand conveying pipe, lifting cylinder, vertical pipe, rotating pipe, bellows and tilting pipe, rotating assembly and tilting assembly, the piston rod of the lifting cylinder is extended and retracted to change the height of the lowest end of the sand conveying pipe, and the rotating assembly drives the rotating pipe and the vertical pipe to rotate, so as to change the direction of the tilting pipe. The tilting assembly adjusts the tilting angle between the tilting pipe and the rotating pipe, and changes the tilting angle of the tilting pipe, so as to facilitate the docking of the sand conveying pipe with mold sand boxes of different specifications and shapes at different positions, thereby improving the convenience of use and the scope of application of the device;

[0025] 2. By arranging the mounting frame, sleeve, impact rod, abutment spring, impact ball, rotating disk, linkage block, linkage rod, rotating shaft, abutment block and linkage assembly, when the screw rod rotates continuously, the impact rod can be driven to continuously store and release force, so that the impact ball continuously impacts the rotating tube, and the vibration of the rotating tube can effectively reduce the blockage, thereby reducing the blockage of the sand conveying pipe when adjusting the inclination angle between the inclined tube and the rotating tube;

[0026] 3. By setting the guide surface, sealing ring, cylinder, bending rod and sealing cone, the piston rod of the cylinder is extended and retracted to drive the bending rod to slide, so that the sealing cone is close to or away from the sealing ring. The size of the gap between the sealing cone and the sealing ring is automatically controlled by the cylinder, which is conducive to controlling the discharge speed. The control is convenient and quick, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a gravity continuous sand adding device provided in an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0029] Figure 3 It is a partial structural schematic diagram of a gravity continuous sand adding device provided in an embodiment of the present application;

[0030] Figure 4 It is a cross-sectional schematic diagram for illustrating the inclined tube in the embodiment of the present application;

[0031] In the figure, 1, bracket; 11, sand inlet hopper; 12, lifting cylinder; 2, sand conveying pipe; 21, vertical pipe; 22, rotating pipe; 23, bellows; 24, tilting pipe; 241, guide surface; 242, sealing ring; 3, rotating assembly; 31, first motor; 32, driving gear; 33, driven gear; 4, tilting assembly; 41, connecting rod; 42, first connecting block; 43, second motor; 44, screw rod; 45, second connecting block; 46. ​​Sliding block; 461. Limiting block; 5. Sliding groove; 51. Limiting groove; 511. Guide ball; 6. Mounting frame; 61. Sleeve; 611. Impact rod; 612. Impact ball; 62. Rotating disk; 621. Linkage block; 63. Linkage rod; 7. Rotating shaft; 71. Abutment block; 8. Linkage assembly; 81. Active bevel gear; 82. Driven bevel gear; 9. Cylinder; 91. Bending rod; 92. Sealing cone; 93. Sealing plate. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0033] A gravity continuous sand feeding device, referring to Figure 1 , including a bracket 1 and a sand inlet hopper 11 fixedly arranged on the bracket 1, the sand inlet of the sand inlet hopper 11 is located at the top, the sand outlet of the sand inlet hopper 11 is located at the bottom, and the bottom end of the sand inlet hopper 11 is connected to a sand delivery pipe 2. A lifting cylinder 12 is arranged on the bracket 1, the bottom end of the lifting cylinder 12 is fixed to the bracket 1, the length direction of the lifting cylinder 12 is arranged along the vertical direction, and the piston rod of the lifting cylinder 12 is connected to the sand inlet hopper 11. When the sand delivery pipe 2 of the device is used to dock with different mold sand boxes, the piston rod of the lifting cylinder 12 can be extended and retracted first to drive the sand inlet hopper 11 to move in the vertical direction, and then the height of the lowest end of the sand delivery pipe 2 can be changed, so that the sand delivery pipe 2 can be conveniently docked with mold sand boxes of different heights.

[0034] Reference Figure 1 and Figure 2The sand conveying pipe 2 includes a vertical pipe 21, a rotating pipe 22, a bellows 23 and an inclined pipe 24. The vertical pipe 21 is connected to the bottom end of the sand feeding hopper 11. The length direction of the vertical pipe 21 is arranged along the vertical direction. The rotating pipe 22 is sleeved on the vertical pipe 21 and is rotatably connected to the vertical pipe 21. The bellows 23 is connected and arranged between the rotating pipe 22 and the inclined pipe 24. A rotating assembly 3 is arranged between the rotating pipe 22 and the vertical pipe 21. The rotating assembly 3 includes a first motor 31, a driving gear 32 and a driven gear 33. The first motor 31 is fixedly arranged on the outer wall of the vertical pipe 21. The driving shaft of the first motor 31 is connected to the driving gear 32. The driven gear 33 is arranged on the side wall of the rotating pipe 22 and is coaxially arranged with the rotating pipe 22. The driven gear 33 is meshed with the driving gear 32. The first motor 31 drives the driving gear 32 to rotate, and the driving gear 32 is then against the driven gear 33, thereby driving the rotating tube 22 and the inclined tube 24 on the rotating tube 22 to rotate together, so that the direction of the inclined tube 24 can be changed, which facilitates the docking of the sand conveying tube 2 with the mold sand boxes at different positions.

[0035] Reference Figure 2 and Figure 4 A tilting assembly 4 is arranged between the rotating tube 22 and the tilting tube 24. The tilting assembly 4 includes a connecting rod 41, a first connecting block 42, a second motor 43, a screw rod 44, a second connecting block 45 and a sliding block 46. The top of the connecting rod 41 is welded and fixed to the top of the bellows 23, the bottom of the connecting rod 41 is fixed to the first connecting block 42, and the first connecting block 42 is hinged to the bottom side wall of the bellows 23 through a rotating shaft. The second connecting block 45 is hingedly arranged at the bottom end of the bellows 23, and the second connecting block 45 and the first connecting block 42 are symmetrically arranged on the bellows 23 along the central axis of the bellows 23. A sliding groove 5 is arranged through the second connecting block 45, and the length direction of the sliding groove 5 is arranged along the length direction of the second connecting block 45. The sliding block 46 is slidingly arranged in the sliding groove 5. The second motor 43 is fixedly arranged on the outer wall of the rotating tube 22, and the driving shaft of the second motor 43 is connected to the screw rod 44, and the length direction of the screw rod 44 is arranged in the vertical direction, and the screw rod 44 passes through the sliding block 46 and is threadedly connected with the sliding block 46. The screw rod 44 is driven to rotate by the second motor 43, and the screw rod 44 is threadedly connected with the sliding block 46. The sliding block 46 is guided to slide on the outer wall of the screw rod 44, and the sliding block 46 slides in the sliding groove 5 along the length direction of the sliding groove 5. When the sliding block 46 slides, the second connecting block 45 is driven to rise and fall in the vertical direction, so that the second connecting block 45 can rotate with the bottom end of the corrugated tube 23, and the first connecting block 42 rotates with the bottom end of the corrugated tube 23, thereby realizing the change of the inclination angle of the inclined tube 24, so as to facilitate the docking of the sand conveying pipe 2 with mold sand boxes of different specifications and shapes at different positions.

[0036] Reference Figure 2The inner side wall of the sliding groove 5 is symmetrically provided with a limiting groove 51 along its length direction, and the side wall of the sliding block 46 is integrally provided with a limiting block 461, which is slidingly arranged in the limiting groove 51, and a plurality of guide balls 511 are rotatably arranged in the limiting groove 51 to abut against the surface of the limiting block 461. When the screw rod 44 rotates to drive the sliding block 46 to slide, the limiting block 461 slides in the limiting groove 51, and the guide balls 511 can reduce the friction between the limiting block 461 and the inner wall of the limiting groove 51, so as to facilitate the sliding block 46 to slide along the length direction of the sliding groove 5.

[0037] Reference Figure 2 and Figure 3The side wall of the rotating tube 22 is fixedly provided with a mounting frame 6, on which a sleeve 61 is provided, and the length direction of the sleeve 61 is arranged horizontally. A striking rod 611 is provided through the sleeve 61, and a contact spring that abuts against the striking rod 611 is provided in the sleeve 61. The abutment spring drives the striking rod 611 to slide toward the surface of the rotating tube 22. An impact ball 612 is provided at one end of the impact rod 611 facing the rotating tube 22, and the impact ball 612 is made of rubber. A rotating disk 62 is also rotatably provided on the mounting frame 6, and a linkage block 621 is fixedly provided on the side wall of the rotating disk 62. One end of the linkage rod 63 is hinged to the linkage block 621, and the other end of the linkage rod 63 is hinged to the striking rod 611. A rotating shaft 7 is also rotatably provided on the mounting frame 6, and the rotating shaft 7 passes through the mounting frame 6 and the rotating disk 62. The rotating shaft 7 is coaxially arranged with the rotating disk 62, and an abutment block 71 that can abut against the linkage block 621 is fixedly provided on the rotating shaft 7. A linkage assembly 8 is provided between the mounting frame 6 and the screw rod 44. The linkage assembly 8 includes a driving bevel gear 81 and a driven bevel gear 82. The driving bevel gear 81 is provided on the side wall of the screw rod 44. The driving bevel gear 81 and the screw rod 44 are coaxially arranged. The driven bevel gear 82 is provided at one end of the rotating shaft 7 away from the abutment block 71. The driven bevel gear 82 and the rotating shaft 7 are coaxially arranged. The driven bevel gear 82 and the driving bevel gear 81 are meshed with each other. When the second motor 43 drives the screw rod 44 to rotate to change the tilt angle between the tilting tube 24 and the rotating tube 22, the screw rod 44 drives the driving bevel gear 81 to rotate, the driving bevel gear 81 abuts against the driven bevel gear 82, and drives the driven bevel gear 82 and the rotating shaft 7 to rotate. The rotating shaft 7 drives the abutment block 71 to rotate. When the abutment block 71 abuts against the linkage block 621, the abutment block 71 can drive the rotating disk 62 to rotate. At this time, the linkage rod 63 and the linkage block 621 rotate, and the linkage rod 63 pulls the impact rod 611, so that the impact rod 611 slides on the sleeve 61 away from the rotating tube 22, at this time the spring in the sleeve 61 will be compressed; the abutment block 71 drives the rotating disk 62 to rotate continuously, when the linkage block 621 rotates with the rotating disk 62 to the farthest distance from the rotating tube 22, at this time the spring in the sleeve 61 is compressed to the optimal force storage state, and after the abutment block 71 rotates continuously, the elastic force of the abutment spring will be released instantly, driving the impact ball 612 to hit the rotating tube 22, causing the rotating tube 22 to vibrate. In this way, when the screw rod 44 rotates continuously, it can drive the impact rod 611 to continuously store and release force, so that the impact ball 612 continuously hits the rotating tube 22, and the vibration of the rotating tube 22 can effectively reduce the blockage, thereby reducing the blockage of the sand conveying pipe 2 when adjusting the inclination angle between the inclined tube 24 and the rotating tube 22.

[0038] Reference Figure 4, the bottom end of the inclined tube 24 is inclinedly provided with a guide surface 241, and the lowest end of the guide surface 241 is provided with a sealing ring 242, and the sealing ring 242 is made of elastic rubber material. The side wall of the inclined tube 24 is fixedly provided with a cylinder 9, and the length direction of the cylinder 9 is arranged along the length direction of the inclined tube 24. The piston rod of the cylinder 9 is connected with a bending rod 91, and the bending rod 91 extends into the inclined tube 24 and is connected with a sealing cone 92, and the side wall of the sealing cone 92 can be against the sealing ring 242. A sealing plate 93 is fixedly provided on the bending rod 91, and the sealing plate 93 is in contact with the inner wall and the outer wall of the inclined tube 24. The piston rod of the cylinder 9 is extended and retracted to drive the bending rod 91 to slide, so that the sealing cone 92 is close to or away from the sealing ring 242, and the cylinder 9 electrically controls the size of the gap between the sealing cone 92 and the sealing ring 242, which is conducive to controlling the discharging speed, and the control is convenient and fast, and the sealing effect is good.

[0039] The implementation principle of the embodiment of the present application is:

[0040] When the sand conveying pipe 2 of the present device is used to dock with different mold sand boxes, the piston rod of the lifting cylinder 12 can be extended and retracted to drive the sand feeding bucket 11 to move in the vertical direction, thereby changing the height of the lowest end of the sand conveying pipe 2, so as to facilitate the docking of the sand conveying pipe 2 with mold sand boxes of different heights. Alternatively, the first motor 31 drives the driving gear 32 and the driven gear 33 to counteract each other, driving the rotating tube 22 and the vertical tube 21 to rotate, so as to change the direction of the inclined tube 24, so as to facilitate the docking of the sand conveying pipe 2 with mold sand boxes at different positions. Alternatively, the second motor 43 drives the screw rod 44 to rotate, so that the sliding block 46 slides on the outer wall of the screw rod 44, changes the inclination angle of the inclined tube 24, and the corrugated tube 23 can always keep the rotating tube 22 and the inclined tube 24 connected, so as to facilitate the docking of the sand conveying pipe 2 with mold sand boxes of different specifications and shapes at different positions, improve the convenience of use and the scope of application of the device, and realize convenient and fast control while achieving low cost.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gravity continuous sand feeding device, comprising a support (1) and a sand feeding hopper (11) arranged on the support (1), wherein the bottom end of the sand feeding hopper (11) is connected to a sand conveying pipe (2), characterized in that: The support (1) is provided with a lifting cylinder (12), the bottom end of the lifting cylinder (12) is fixed to the support (1), and the piston rod of the lifting cylinder (12) is connected to the sand feeding hopper (11); the sand transport pipe (2) comprises a vertical pipe (21), a rotating pipe (22), a bellows (23) and an inclined pipe (24); the vertical pipe (21) is connected to the bottom end of the sand feeding hopper (11); the rotating pipe (22) is sleeved on the vertical pipe (21) and is rotatably connected to the vertical pipe (21); a rotating assembly (3) is provided between the rotating pipe (22) and the vertical pipe (21); the rotating assembly (3) is used to drive the rotating pipe (22) and the vertical pipe (21) to rotate; the bellows (2 3) connected between the rotating tube (22) and the tilting tube (24), a tilting assembly (4) is arranged between the rotating tube (22) and the tilting tube (24), and the tilting assembly (4) is used to control the tilting angle between the tilting tube (24) and the rotating tube (22); the tilting assembly (4) comprises a connecting rod (41), a first connecting block (42), a second motor (43), a screw rod (44), a second connecting block (45) and a sliding block (46), the top end of the connecting rod (41) is fixed to the top end of the corrugated tube (23), the bottom end of the connecting rod (41) is fixed to the first connecting block (42), and the first connecting block (42) and the bottom end of the corrugated tube (23) are hinged to each other; the second connecting block ( The second connecting block (45) is hingedly arranged at the bottom end of the bellows (23); the second connecting block (45) is symmetrically arranged with the first connecting block (42); a sliding groove (5) is penetrated on the second connecting block (45); the sliding block (46) is slidably arranged in the sliding groove (5); the second motor (43) is fixedly arranged on the side wall of the rotating tube (22); the driving shaft of the second motor (43) is connected to the screw rod (44); the screw rod (44) penetrates the sliding block (46) and is threadedly connected to the sliding block (46); the side wall of the rotating tube (22) is provided with a mounting frame (6); the mounting frame (6) is provided with a sleeve (61); the sleeve (61) is penetrated with an impact rod (611); the sleeve (6 1) an abutting spring abutting against an impact rod (611) is arranged inside, and an impact ball (612) is arranged at one end of the impact rod (611) facing the rotating tube (22); a rotating disk (62) is rotatably arranged on the mounting frame (6), a linkage block (621) is arranged on the rotating disk (62), a linkage rod (63) is arranged between the linkage block (621) and the impact rod (611), one end of the linkage rod (63) is hinged to the linkage block (621), and the other end of the linkage rod (63) is hinged to the impact rod (611); a rotating shaft (7) is rotatably arranged on the mounting frame (6), and an abutting block (71) that can abut against the linkage block (621) is arranged on the rotating shaft (7);A linkage assembly (8) is provided between the mounting frame (6) and the screw rod (44), and the linkage assembly (8) is used to drive the rotating shaft (7) to rotate when the screw rod (44) rotates; the linkage assembly (8) comprises a driving bevel gear (81) and a driven bevel gear (82), the driving bevel gear (81) being provided on a side wall of the screw rod (44), and the driven bevel gear (82) being provided at one end of the rotating shaft (7) away from the abutment block (71), and the driven bevel gear (82) and the driving bevel gear (81) are meshed with each other. ; 2. A gravity continuous sand feeding device according to claim 1, characterized in that: The rotating assembly (3) comprises a first motor (31), a driving gear (32) and a driven gear (33); the first motor (31) is arranged on the side wall of the vertical tube (21); the driving shaft of the first motor (31) and the driving gear (32) are connected to each other; the driven gear (33) is arranged on the side wall of the rotating tube (22); the driven gear (33) and the driving gear (32) are meshed with each other.

3. A gravity continuous sand feeding device according to claim 1, characterized in that: A limiting groove (51) is provided on the inner side wall of the sliding groove (5), a limiting block (461) is integrally provided on the side wall of the sliding block (46), the limiting block (461) is slidingly provided in the limiting groove (51), and a plurality of guide balls (511) are rotatably provided in the limiting groove (51) and abut against the surface of the limiting block (461).

4. A gravity continuous sand feeding device according to claim 1, characterized in that: The bottom end of the inclined tube (24) is provided with a flow guide surface (241), the lowest end of the flow guide surface (241) is provided with a sealing ring (242), the side wall of the inclined tube (24) is provided with a cylinder (9), the piston rod of the cylinder (9) is connected to a bending rod (91), the bending rod (91) extends into the inclined tube (24) and is connected to a sealing cone (92), and the side wall of the sealing cone (92) abuts against the sealing ring (242).

5. A gravity continuous sand feeding device according to claim 4, characterized in that: A group of sealing plates (93) are provided on the bending rod (91), and the sealing plates (93) are in contact with the inner wall and the outer wall of the inclined tube (24).

Images