A kind of sand-falling equipment for container corner casting

Abstract

The present invention discloses a sand-falling device for casting container corner fittings, and relates to the technical field of sand-falling devices. A sand-falling device for casting container corner fittings comprises a device box, and further comprises: a sand-falling box with an upward opening, which is arranged at the upper end of the device box, wherein the lower end of the sand-falling box is fixedly connected to a lifting rod, and the lifting rod is longitudinally slidably installed on the top of the device box, a sand-falling plate is fixedly connected inside the sand-falling box, and the sand-falling plate is provided with sieve holes, and the device box is provided with a lifting part for driving the sand-falling box to move up and down; a plurality of device holes are all provided on the sand-falling plate, wherein a vertical pipe is rotatably installed in the device hole, the top of the vertical pipe is provided with an upper air hole, and the outer wall of the vertical pipe is provided with a plurality of side air holes distributed circumferentially; the present invention can also enable the interior of the container corner fitting body to obtain efficient sand-falling treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of sand-falling equipment, and in particular relates to a sand-falling equipment for casting container corner pieces. Background Art

[0002] Container corner fittings are key load-bearing components used for lifting, stacking, and securing containers. They are typically produced using a sand casting process using high-strength cast steel. During the casting process, molten steel is poured into a sandbox cavity made of resin sand or water glass sand. After cooling and shaping, the corner fittings are cast. Container corner fittings are typically manufactured from ordinary cast steel to meet conventional strength and economic requirements. However, in extremely specialized applications (such as aerospace, deep sea, or highly corrosive environments), high-quality titanium alloys (such as Ti-6Al-4V) are used to meet requirements for ultra-lightweight, ultra-high strength, or excellent corrosion resistance. Although this cost significantly more than cast steel and is more difficult to process, it offers superior overall performance.

[0003] After the container corner fittings are cast, they need to be vibrated or shot blasted by a shakeout machine to separate the sand mold from the corner fittings and recover the sand in preparation for subsequent machining and surface treatment. During this period, since the container corner fittings have cavities inside and through holes on the sides, the sand inside is difficult to be easily discharged. This often requires the shakeout machine to run for a longer time or generate a larger vibration amplitude to improve the processing effect, which will significantly increase the cost of processing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a sand-falling device for container corner casting that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A sand-falling device for casting container corner pieces includes a device box, and also includes: a sand-falling box with an upward opening, which is arranged at the upper end of the device box, wherein the lower end of the sand-falling box is fixedly connected to a lifting rod, and the lifting rod is longitudinally slidably installed on the top of the device box, a sand-falling plate is fixedly connected to the sand-falling box, the sand-falling plate is provided with sieve holes, and the device box is provided with a lifting part for driving the sand-falling box to move up and down; multiple device holes are all provided on the sand-falling plate, wherein a vertical pipe is rotatably installed in the device hole, the top of the vertical pipe is provided with an upper air hole, and the outer wall of the vertical pipe is provided with multiple side air holes distributed circumferentially.

[0007] Preferably, the lifting part includes a horizontal axis rotatably installed in the device box, a turntable is fixedly installed on the horizontal axis, the shaft end of the turntable is rotatably connected to a long rod, and the other end of the long rod is rotatably connected to the lower end of the sand falling box, wherein a drive motor is fixedly installed in the device box, and the output shaft of the drive motor is connected to the horizontal axis through two mutually meshing transmission gears.

[0008] Preferably, an elastic rod is fixedly connected to the outer wall of the vertical tube, and a knocking block is fixedly connected to the end of the elastic rod.

[0009] Preferably, a telescopic airbag is fixedly installed on the upper end of the device box, and an intake pipe and an exhaust pipe communicating with the telescopic airbag are fixedly connected to the telescopic airbag, and a one-way valve is fixedly installed in both the intake pipe and the exhaust pipe. The telescopic end of the telescopic airbag is fixedly connected to a pressure plate, the top surface of the pressure plate at the lower end of the vertical pipe is rotatably connected, and the lower end of the vertical pipe is connected to the exhaust pipe.

[0010] Preferably, the axis of the side air hole and the axis of the vertical pipe are perpendicular to each other but do not intersect.

[0011] Furthermore, both sides of the sand-falling box are fixedly connected with an air suction hood connected thereto, and the air suction end of the air suction hood is tilted downward, the air suction end of the air suction hood is fixedly installed with a filter, and the end of the air suction pipe is fixedly connected to and connected with the air suction hood.

[0012] Preferably, a crossbeam is slidably installed on the top of the sand-falling box, and a plurality of strip plates extending to the upper end surface of the sand-falling plate are fixedly connected to the crossbeam. A pressure roller is rotatably installed on the lower end of the strip plate, and the vertical tube is located between two strip plates at adjacent positions. The sand-falling box is provided with a pushing part that drives the crossbeam to slide back and forth.

[0013] Furthermore, the pushing part includes a screw rotatably connected to the outer wall of the sand falling box, the outer wall of the screw is threadedly connected to a slide fixedly connected to the crossbeam, one end of the screw is fixedly installed with a driven gear, and the device box is fixedly connected to a rack meshing with the driven gear.

[0014] Furthermore, a plurality of short plates arranged at equal intervals are fixedly connected between two adjacent strip plates, a rectangular area is formed between the short plates and the strip plates, and the vertical pipe is located in the rectangular area.

[0015] Preferably, a discharge trough is provided on the outer wall of the lower end of the shakeout box, and the inner bottom of the shakeout box is inclined toward the discharge trough.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. The present invention exhausts internal air into the vertical pipe through the exhaust pipe. The upper air hole will blow the airflow toward the inner top of the container corner fitting body, while the side air holes will blow the airflow toward the inner side wall of the container corner fitting body, so that the interior of the container corner fitting body can also be effectively sanded.

[0018] 2. The present invention drives the knocking block to swing up and down through the elastic rod, and the knocking block will knock the inner wall of the container corner fitting body. Under the blowing effect of the upper air hole and the side air hole, the molding sand inside the container corner fitting body can be shaken off more efficiently.

[0019] 3. The present invention obliquely discharges air into the container corner fitting body through the side air holes, so the vertical pipe will also revolve around its axis. The rotating vertical pipe will make the side air holes blow air toward the inner wall of the container corner fitting body more comprehensively, and make the knocking block knock the inner wall of the container corner fitting body more comprehensively, so that the molding sand inside the container corner fitting body is more efficient in falling off. When the vertical pipe drives the knocking block to revolve synchronously, the knocking block will also have a higher probability of pushing the container corner fitting body to rotate slightly, so that the container corner fitting body can shake off the molding sand more efficiently.

[0020] 4. The present invention draws air into the suction hood through the suction pipe, and a negative pressure is generated in the shakeout box. On the one hand, the dust generated during vibration can be sucked into the shakeout box and filtered by the filter, thereby reducing the pollution of dust to the surrounding air. On the other hand, it can also make the molding sand on the outer wall of the container corner fitting body fall more easily and enter the inner bottom of the shakeout box through the sieve holes.

[0021] 5. The present invention drives the driven gear to roll back and forth along the rack through the sand falling box, so that the strip plate pushes the container corner fitting body to move back and forth horizontally, making it easier for the molding sand on the container corner fitting body to fall off. It can also prevent the molding sand from entering certain sieve holes too concentratedly, thereby improving the efficiency of the sieve holes in discharging the molding sand. In addition, in conjunction with the internal rotating vertical pipe and the revolving knocking block, the molding sand inside the container corner fitting body can be more easily fallen off.

[0022] 6. The present invention also drives the pressure roller to roll back and forth on the sand-falling plate through the reciprocating horizontal movement of the strip plate. On the one hand, it can allow the molding sand to enter multiple sieve holes, thereby improving the efficiency of the molding sand being discharged from the sieve holes. On the other hand, the pressure roller can also crush the agglomerated molding sand, so that the agglomerated molding sand is not easily accumulated on the sand-falling plate and clogs the sieve holes.

[0023] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the attached figure:

[0025] Figure 1This is a schematic structural diagram from a first perspective of a shakeout device for container corner casting proposed by the present invention;

[0026] Figure 2 This is a schematic structural diagram from a second perspective of a shakeout device for container corner casting proposed by the present invention;

[0027] Figure 3 This is a partial cross-sectional structural diagram of a shakeout device for container corner casting proposed by the present invention;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the shakeout box of a shakeout equipment for casting container corner parts proposed by the present invention. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the vertical pipe structure of a sand-falling equipment for container corner casting proposed by the present invention;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of the shakeout box of a shakeout equipment for casting container corner parts proposed by the present invention. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the strip plate structure of a sand-falling device for casting container corner pieces proposed by the present invention;

[0032] Figure 8 This is a schematic diagram of the pressure plate structure of a sand-falling device for container corner casting proposed by the present invention;

[0033] Figure 9 This is a structural diagram of the container corner fittings.

[0034] In the figure: 1. Device box; 2. Sand falling box; 3. Lifting rod; 4. Sand falling plate; 5. Screen hole; 6. Device hole; 7. Vertical pipe; 8. Upper air hole; 9. Side air hole; 10. Elastic rod; 11. Knocking block; 12. Pressing plate; 13. Telescopic air bag; 14. Suction pipe; 15. Exhaust pipe; 16. Horizontal axis; 17. Turntable; 18. Long rod; 19. Drive motor; 20. Transmission gear; 21. Crossbeam; 22. Strip plate; 23. Short plate; 24. Rectangular area; 25. Pressing roller; 26. Screw; 27. Slide; 28. Driven gear; 29. ​​Rack; 30. Suction hood; 31. Filter screen; 32. Discharge chute; 33. Container corner fitting body; 34. Main hole; 35. Branch hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0036] Example 1: Reference Figure 1-5 A sand-falling device for casting container corner fittings includes a device box 1 with a hollow interior, and also includes: a sand-falling box 2 with an upward opening, which is arranged at the upper end of the device box 1, wherein the lower end of the sand-falling box 2 is fixedly connected to a lifting rod 3, and the lifting rod 3 is longitudinally slidably installed at the top of the device box 1, and a sand-falling plate 4 is fixedly connected to the sand-falling box 2. The sand-falling plate 4 is used to place the container corner fitting body 33, and the sand-falling plate 4 is provided with a sieve hole 5. A lifting part is provided in the device box 1 to drive the sand-falling box 2 to rise and fall, and the lifting part includes a horizontal shaft rotatably installed in the device box 1. Shaft 16, a turntable 17 is fixedly installed on the horizontal shaft 16, the shaft end of the turntable 17 is rotatably connected to a long rod 18, and the other end of the long rod 18 is rotatably connected to the lower end of the sand-falling box 2, wherein a drive motor 19 is fixedly installed in the device box 1, and the output shaft of the drive motor 19 is connected to the horizontal shaft 16 by two mutually meshing transmission gears 20; multiple device holes 6 are all provided on the sand-falling plate 4, wherein a vertical pipe 7 is rotatably installed in the device hole 6, the top of the vertical pipe 7 is provided with an upper air hole 8, and the outer wall of the vertical pipe 7 is provided with multiple side air holes 9 distributed circumferentially.

[0037] When in use, the main hole 34 of the container corner fitting body 33 is oriented and buckled on the vertical pipe 7, that is, the side of the container corner fitting body 33 with the main hole 34 needs to be attached to the sand-falling plate 4, and the branch hole 35 on the side of the container corner fitting body 33 is arranged horizontally. Therefore, when in use, the driving motor 19 will drive the horizontal shaft 16 to rotate through two mutually meshing transmission gears 20, and the horizontal shaft 16 will drive the turntable 17 to rotate. The turntable 17 will drive the sand-falling box 2 to move up and down through the long rod 18 according to the principle of the crank slider, and the sand-falling box 2 will drive the container corner fitting body through the sand-falling plate 4. 33 is shaken up and down and vibrated to complete the removal of the molding sand, and the removed molding sand will pass through the sieve hole 5 into the inner bottom of the sand-falling box 2; during the sand-falling process, compressed air is transported into the vertical pipe 7, and the air will be discharged from the upper air hole 8 at the top of the vertical pipe 7 and the side air hole 9 on the side. The upper air hole 8 will blow the air flow to the inner top of the container corner fitting body 33, and the side air hole 9 will blow the air flow to the inner side wall of the container corner fitting body 33, so that the interior of the container corner fitting body 33 can also be efficiently sand-falling processed. In practice, an air pump or an air tank can be selected to supply air to the vertical pipe 7.

[0038] The outer wall of the vertical tube 7 is fixedly connected to an elastic rod 10, and the end of the elastic rod 10 is fixedly connected to a knocking block 11; therefore, when the vertical tube 7 is raised and lowered, the vertical tube 7 will also drive the knocking block 11 to swing up and down through the elastic rod 10, and the knocking block 11 will knock on the inner wall of the container corner fitting body 33. With the blowing effect of the upper air hole 8 and the side air hole 9, the molding sand inside the container corner fitting body 33 can be shaken off more efficiently.

[0039] The axis of the side air hole 9 is perpendicular to the axis of the vertical pipe 7 but does not intersect with it. That is, the side air hole 9 is arranged obliquely on the outer wall of the vertical pipe 7. Therefore, when the side air hole 9 exhausts air, the vertical pipe 7 is subjected to a torsional thrust. Since the axis of the side air hole 9 does not intersect with the axis of the vertical pipe 7, that is, the side air hole 9 will obliquely discharge air into the container corner fitting body 33, the vertical pipe 7 will also revolve around its axis. The rotating vertical pipe 7 will cause the side air hole 9 to blow air more comprehensively into the container corner fitting body. 33, and the knocking block 11 knocks the inner wall of the container corner fitting body 33 more comprehensively, so that the molding sand inside the container corner fitting body 33 is more efficient in falling off. When the vertical pipe 7 drives the knocking block 11 to revolve synchronously, since the outer shape of the container corner fitting body 33 is rectangular, when the knocking block 11 knocks on the plane of the inner wall of the container corner fitting body 33, it will also push the container corner fitting body 33 to rotate slightly with a greater probability, so that the container corner fitting body 33 can shake off the molding sand more efficiently.

[0040] A discharge chute 32 is provided on the lower outer wall of the shakeout box 2 . The bottom of the shakeout box 2 is tilted toward the discharge chute 32 . The rising and falling shakeout box 2 discharges the molding sand from the discharge chute 32 .

[0041] Example 2: Reference Figure 5 , a shakeout device for container corner casting, which is basically the same as Example 1, further comprising:

[0042] A telescopic airbag 13 is fixedly installed on the upper end of the above-mentioned device box 1, and an intake pipe 14 and an exhaust pipe 15 connected thereto are fixedly connected to the telescopic airbag 13. A one-way valve is fixedly installed in the intake pipe 14 and the exhaust pipe 15. The telescopic end of the telescopic airbag 13 is fixedly connected to a pressure plate 12, and the top surface of the pressure plate 12 at the lower end of the vertical pipe 7 is rotatably connected, and the lower end of the vertical pipe 7 is connected to the exhaust pipe 15.

[0043] Specifically, during the sand falling process, the rising and falling sand falling box 2 will drive the vertical pipe 7 to rise and fall synchronously, and the vertical pipe 7 will drive the pressure plate 12 to rise and fall. When the pressure plate 12 presses the telescopic airbag 13 downward, the telescopic airbag 13 will discharge the internal air into the vertical pipe 7 through the exhaust pipe 15, thereby automatically supplying air to the vertical pipe 7. Of course, when the air pressure in the vertical pipe 7 is insufficient, an external air source can also be connected to assist in the air supply. When the vertical pipe 7 drives the pressure plate 12 to lift upward and stretch the telescopic airbag 13, the telescopic airbag 13 will absorb air through the suction pipe 14.

[0044] Both sides of the above-mentioned sand-falling box 2 are fixedly connected with an air suction hood 30 connected thereto, and the air suction end of the air suction hood 30 is tilted downward. The air suction end of the air suction hood 30 is fixedly installed with a filter screen 31 for filtering the molding sand, and the end of the air suction pipe 14 is fixedly connected and connected to the air suction hood 30.

[0045] Specifically, when the suction pipe 14 draws air, the suction pipe 14 will draw air into the suction hood 30, and the suction hood 30 will draw air into the inside of the sand-falling box 2, and negative pressure will be generated in the sand-falling box 2. On the one hand, it can make the dust generated during vibration be sucked into the sand-falling box 2 and filtered by the filter 31, which can reduce the pollution of dust to the surrounding air. On the other hand, it can also make the molding sand on the outer wall of the container corner piece body 33 fall more easily and enter the inner bottom of the sand-falling box 2 through the sieve hole 5.

[0046] Example 3: Reference Figure 4 , a shakeout device for container corner casting, which is basically the same as Example 2, further comprising:

[0047] A crossbeam 21 is slidably installed on the top of the above-mentioned sand-falling box 2, and a plurality of strip plates 22 extending to the upper end surface of the sand-falling plate 4 are fixedly connected to the crossbeam 21. A pressure roller 25 is rotatably installed on the lower end of the strip plate 22. The vertical pipe 7 is located between two strip plates 22 at adjacent positions. The sand-falling box 2 is provided with a pushing part for driving the crossbeam 21 to slide back and forth; the pushing part includes a screw 26 rotatably connected to the outer wall of the sand-falling box 2, and the outer wall of the screw 26 is threadedly connected to a slide 27 fixedly connected to the crossbeam 21, and one end of the screw 26 is fixedly installed with a driven gear 28, and a rack 29 meshing with the driven gear 28 is fixedly connected to the device box 1.

[0048] Specifically, when the shakeout box 2 is lifted up and down, the shakeout box 2 will drive the driven gear 28 to roll back and forth along the rack 29, so the driven gear 28 will rotate back and forth, and drive the screw 26 to rotate back and forth, and the screw 26 will drive the slide 27 to slide back and forth along its axis, and the slide 27 will drive the strip plate 22 to move back and forth on the shakeout plate 4 through the crossbeam 21, thereby pushing the container corner fitting body 33 to move back and forth, making it easier for the molding sand on the container corner fitting body 33 to fall off, and also preventing the molding sand from entering too concentratedly. Certain sieve holes 5 improve the efficiency of discharging molding sand through the sieve holes 5, and cooperate with the internal rotating vertical pipe 7 and the revolving knocking block 11, so that the molding sand inside the container corner fitting body 33 will be easier to fall off, and the reciprocating horizontal strip plate 22 will also drive the pressure roller 25 to roll back and forth on the sand falling plate 4. On the one hand, it can make the molding sand enter multiple sieve holes 5 and improve the efficiency of molding sand discharging through the sieve holes 5. On the other hand, the pressure roller 25 can also crush the agglomerated molding sand, so that the agglomerated molding sand is not easy to accumulate on the sand falling plate 4 and block the sieve holes 5.

[0049] Example 4: Reference Figure 4 , a shakeout device for container corner casting, which is basically the same as Example 3, further comprising:

[0050] A plurality of short plates 23 arranged at equal intervals are fixedly connected between the two adjacent strip plates 22 . A rectangular area 24 is formed between the short plates 23 and the strip plates 22 , and the vertical pipe 7 is located in the rectangular area 24 .

[0051] Specifically, the short plate 23 can be provided to confine the container corner fitting body 33 within the rectangular area 24 , thereby reducing the probability of the container corner fitting body 33 being separated from the top end of the vertical pipe 7 .

[0052] When the present invention is in use, the main hole 34 of the container corner fitting body 33 is oriented toward and buckled onto the vertical pipe 7. In other words, the side of the container corner fitting body 33 with the main hole 34 needs to be in contact with the shakeout plate 4. Therefore, when in use, the drive motor 19 drives the horizontal shaft 16 to rotate through two mutually meshing transmission gears 20, and the horizontal shaft 16 drives the turntable 17 to rotate. The turntable 17 drives the shakeout box 2 up and down through the long rod 18 using the principle of a crank slider. The shakeout box 2 drives the container corner fitting body 33 up and down through the shakeout plate 4, thereby completing the work of removing molding sand. The removed molding sand passes through the sieve holes 5 and enters the inner bottom of the shakeout box 2.

[0053] During the sand falling process, the rising and falling sand falling box 2 will drive the vertical pipe 7 to rise and fall synchronously, and the vertical pipe 7 will drive the pressure plate 12 to rise and fall. When the pressure plate 12 presses the telescopic airbag 13 downward, the telescopic airbag 13 will discharge the internal air into the vertical pipe 7 through the exhaust pipe 15, and finally be discharged from the upper air hole 8 at the top of the vertical pipe 7 and the side air hole 9 on the side. The upper air hole 8 will blow the airflow to the inner top of the container corner fitting body 33, and the side air hole 9 will blow the airflow to the inner side wall of the container corner fitting body 33, so that the interior of the container corner fitting body 33 can also be efficiently sanded. When the vertical pipe 7 drives the pressure plate 12 to lift upward and stretch the telescopic airbag 13, the telescopic airbag 13 will absorb air through the suction pipe 14.

[0054] When the vertical pipe 7 is raised and lowered, the vertical pipe 7 will also drive the knocking block 11 to swing up and down through the elastic rod 10, and the knocking block 11 will knock the inner wall of the container corner fitting body 33. Under the blowing action of the upper air hole 8 and the side air hole 9, the molding sand inside the container corner fitting body 33 can be shaken off more efficiently.

[0055] When the shakeout box 2 is lifted up and down, the shakeout box 2 drives the driven gear 28 to roll back and forth along the rack 29, so the driven gear 28 rotates back and forth, and drives the screw 26 to rotate back and forth, and the screw 26 drives the slide 27 to slide back and forth along its axis, and the slide 27 drives the strip plate 22 to move back and forth on the shakeout plate 4 through the crossbeam 21, thereby pushing the container corner fitting body 33 to move back and forth, making it easier for the molding sand on the container corner fitting body 33 to fall off, and also preventing the molding sand from being too concentrated into certain areas. The sieve holes 5 are provided to improve the efficiency of discharging the molding sand through the sieve holes 5, and cooperate with the internal rotating vertical pipe 7 and the revolving knocking block 11, so that the molding sand inside the container corner fitting body 33 can be more easily removed, and the reciprocating horizontal strip plate 22 can also drive the pressure roller 25 to roll back and forth on the sand falling plate 4. On the one hand, it can make the molding sand enter the multiple sieve holes 5 and improve the efficiency of the molding sand discharging through the sieve holes 5. On the other hand, the pressure roller 25 can also crush the agglomerated molding sand, so that the agglomerated molding sand is not easy to accumulate on the sand falling plate 4 and block the sieve holes 5.

[0056] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A sand-falling device for container corner casting, comprising a device box (1), characterized in that: Also includes: A sand-falling box (2) with an upward opening is arranged at the upper end of the device box (1), wherein the lower end of the sand-falling box (2) is fixedly connected to a lifting rod (3), and the lifting rod (3) is longitudinally slidably installed on the top of the device box (1), and a sand-falling plate (4) is fixedly connected inside the sand-falling box (2), and a sieve hole (5) is provided on the sand-falling plate (4), and a lifting part for driving the sand-falling box (2) to move up and down is provided inside the device box (1); A plurality of device holes (6) are provided on the sand falling plate (4), wherein a vertical pipe (7) is rotatably installed in the device hole (6), an upper air hole (8) is provided on the top of the vertical pipe (7), and a plurality of side air holes (9) distributed circumferentially are provided on the outer wall of the vertical pipe (7), and the axes of the side air holes (9) and the axis of the vertical pipe (7) are perpendicular to each other but do not intersect; An elastic rod (10) is fixedly connected to the outer wall of the vertical tube (7), and a knocking block (11) is fixedly connected to the end of the elastic rod (10); A crossbeam (21) is slidably mounted on the top of the sand-falling box (2), a plurality of strip plates (22) extending to the upper end surface of the sand-falling plate (4) are fixedly connected to the crossbeam (21), a pressure roller (25) is rotatably mounted on the lower end of the strip plates (22), the vertical pipe (7) is located between two adjacent strip plates (22), and a driving portion for driving the crossbeam (21) to slide back and forth is provided on the sand-falling box (2).

2. The sand-falling equipment for container corner casting according to claim 1, characterized in that: The lifting part includes a horizontal shaft (16) rotatably mounted in a device box (1), a turntable (17) fixedly mounted on the horizontal shaft (16), an axial end of the turntable (17) rotatably connected to a long rod (18), and the other end of the long rod (18) rotatably connected to the lower end of the sand-falling box (2), wherein a drive motor (19) is fixedly mounted in the device box (1), and an output shaft of the drive motor (19) is connected to the horizontal shaft (16) via two mutually meshing transmission gears (20).

3. The sand-falling equipment for container corner casting according to claim 1, characterized in that: A telescopic airbag (13) is fixedly installed at the upper end of the device box (1), and an air intake pipe (14) and an exhaust pipe (15) communicating with the telescopic airbag (13) are fixedly connected to the telescopic airbag (13). A one-way valve is fixedly installed in each of the air intake pipe (14) and the exhaust pipe (15). The telescopic end of the telescopic airbag (13) is fixedly connected to a pressure plate (12). The top surface of the pressure plate (12) at the lower end of the vertical pipe (7) is rotatably connected, and the lower end of the vertical pipe (7) is connected to the exhaust pipe (15).

4. The sand-falling equipment for container corner casting according to claim 1, characterized in that: The axis of the side air hole (9) and the axis of the vertical pipe (7) are perpendicular to each other but do not intersect.

5. The sand-falling equipment for container corner casting according to claim 3, characterized in that: Both sides of the shakeout box (2) are fixedly connected to an air suction hood (30) in communication therewith, and the air suction end of the air suction hood (30) is arranged to be tilted downward, and a filter screen (31) is fixedly installed on the air suction end of the air suction hood (30), and the end of the air suction pipe (14) is fixedly connected to and in communication with the air suction hood (30).

6. The sand-falling equipment for container corner casting according to claim 1, characterized in that: The pushing portion includes a screw (26) rotatably connected to the outer wall of the sand-falling box (2); the outer wall of the screw (26) is threadedly connected to a slide (27) fixedly connected to the crossbeam (21); one end of the screw (26) is fixedly mounted with a driven gear (28); and the device box (1) is fixedly connected with a rack (29) meshing with the driven gear (28).

7. The sand-falling equipment for container corner casting according to claim 1, characterized in that: A plurality of short plates (23) arranged at equal intervals are fixedly connected between two adjacent strip plates (22), a rectangular area (24) is formed between the short plates (23) and the strip plates (22), and the vertical pipe (7) is located within the rectangular area (24).

8. The sand-falling equipment for container corner casting according to claim 1, characterized in that: A discharge groove (32) is provided on the outer wall of the lower end of the shakeout box (2), and the inner bottom of the shakeout box (2) is inclined toward the discharge groove (32).

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