A molding sand casting production line

Abstract

This invention relates to the technical field of molding sand casting, and in particular to a molding sand casting production line, comprising a transport track, a sand mixer mounted on one side of the transport track, a transport platform slidingly mounted on the transport track, a mold mounted on the transport platform, a sand box mounted on the mold, a machine housing mounted on one side of the transport track, a first stop and a second stop slidingly mounted inside the machine housing, a first leveling block mounted on the side of the first stop facing the second stop, and a second leveling block mounted on the side of the second stop facing the first stop, and a sliding drive assembly for driving the first and second stops to slide toward or away from the transport track, and a sand collection box mounted on one side of the transport track, with a pipe equipped with an air pump mounted on the sand collection box, one end of the pipe connected to the sand mixer. This application has the effect of leveling the molding sand on the surface of each sand box using the first and second leveling blocks, thereby reducing the workload of workers.

Description

Technical Field

[0001] This invention relates to the technical field of molding sand casting, and in particular to a molding sand casting production line. Background Technology

[0002] Sand casting is a common metal casting process used to manufacture various metal parts.

[0003] The related technology of molding sand casting and forging production line includes a transport track, a transport platform, a sand box, a sand mixer for pouring molding sand into the sand box, a flipping and lifting machine for separating the sand box and the mold, a rotating track, and an oven for drying the sand box. Workers place the mold on the transport platform, then place the sand box on the mold. The transport track moves the platform towards the sand mixer, which pours molding sand into the sand box. Workers use leveling blocks to level and compact the molding sand on the surface of the sand box. The transport track then moves the platform towards the flipping and demolding machine, which first separates the sand box and the mold. The transport track then slides the mold towards the demolding area, where workers remove it. The transport track then slides the sand box towards the flipping track, which flips the sand box. Workers apply combustible paint to the cavity surface and ignite it using an ignition device. Finally, the sand box enters an oven to dry. The upper and lower sand boxes are assembled and locked to form the cavity, and molten iron is poured into the cavity. After the molten iron solidifies, the desired metal parts are formed.

[0004] However, the molding sand on the surface of each sand box needs to be leveled manually, which is a physically demanding task for the workers. Summary of the Invention

[0005] To address the issue that the molding sand on the surface of each sand box needs to be manually leveled, which results in high labor intensity for workers, this application provides a molding sand casting production line.

[0006] The technical solution for a molding sand casting production line provided in this application is as follows:

[0007] A molding sand casting production line includes a transport track, a sand mixer mounted on one side of the transport track, a transport platform slidingly mounted on the transport track, a mold mounted on the transport platform, a sand box mounted on the mold, a housing mounted on one side of the transport track, and a housing cavity formed within the housing. The housing has a first sliding groove and a second sliding groove on the side facing the transport track, both communicating with the housing cavity, and are positioned relative to the length of the housing. The first sliding groove is slidably equipped with a first stop block, and the second sliding groove is slidably equipped with a second stop block. A first leveling block is provided on the side of the first stop block facing the second stop block, and a second leveling block is provided on the side of the second stop block facing the first stop block. A sliding drive assembly for driving the first and second stop blocks to slide toward or away from the transport track is provided inside the housing. A sand collection box is provided on the side of the transport track away from the housing. A pipe with an air pump is provided on the sand collection box, and the side of the pipe away from the sand collection box is connected to the sand mixer.

[0008] By adopting the above technical solution, the workers first set the mold on the transport platform, then installed the sand box on the mold, and transported the transport platform towards the sand mixer via the transport track; the sand mixer poured molding sand into the sand box, and when the molding sand covered the surface of the sand box, the transport platform was transported towards the machine box via the transport track; through the sliding drive assembly, the first stop block and the second stop block were driven to slide towards the transport track, and at the same time, the first leveling block and the second leveling block were also driven to slide towards the transport track. At this time, the first stop block and the second stop block were both located on both sides of the sand box. As the first and second leveling blocks slide, they level the molding sand on the surface of the sand box. As a result, some of the molding sand on the surface of the sand box falls into the sand collection box for collection due to the pushing force of the first and second leveling blocks. The molding sand in the sand collection box is then transported to the sand mixer by an air pump on the pipeline. The molding sand on the surface of each sand box is leveled by the first and second leveling blocks, thereby reducing the workload of the workers and achieving the purpose of reusing the molding sand. It also solves the problem of some of the molding sand falling onto the transport platform or the ground of the processing site, reducing the environmental pollution of the processing site.

[0009] Preferably, the sliding drive assembly includes a drive motor disposed within the chassis, a drive rod disposed at the output end of the drive motor, a synchronous gear sleeved on one end of the drive rod, a first screw threadedly connected to the first stop block, a first connecting gear disposed on the first screw, a second screw disposed on the second stop block, a second connecting gear disposed on the second screw, a first drive gear and a second drive gear rotatably disposed within the chassis, and a first guide rod and a second guide rod disposed within the chassis;

[0010] The first drive gear and the second drive gear mesh with the first connecting gear and the second connecting gear, respectively. Both the first drive gear and the second drive gear mesh with the synchronous gear. A guide rail is installed inside the chassis cavity. The two opposite sides of the guide rail are respectively installed on the two opposite inner walls of the chassis cavity. A guide groove is opened on the side of the guide rail facing the first stop. A first guide block and a second guide block are slidably installed in the guide groove. A first guide rod is fixedly installed on the side of the first guide block facing the first stop. A second guide rod is fixedly installed on the side of the second guide block facing the second stop. The first guide rod slides through the first stop, and the second guide rod slides through the second stop.

[0011] By adopting the above technical solution, when the drive motor starts, its output end rotates, simultaneously driving the drive rod to rotate. The drive rod, in turn, drives the synchronous gear to rotate. The synchronous gear, in turn, drives the first and second drive gears to rotate. Simultaneously, the first and second drive gears, in turn, drive the first and second connecting gears to rotate. And simultaneously, the first and second connecting gears, in turn, drive the first and second screws to rotate. When the first screw rotates, it slides through the first stop block in conjunction with the first guide rod; when the second screw rotates, it slides through the second stop block in conjunction with the second guide rod. This restricts the first stop block from rotating with the first screw and restricts the second stop block from rotating with the second screw, thereby achieving the purpose of allowing the first and second stops to slide towards the transport track.

[0012] Preferably, the chassis is provided with an adjustment component for adjusting the distance between the first stop and the second stop.

[0013] By adopting the above technical solution, the spacing between the first stop and the second stop can be adjusted by the spacing adjustment component until the first stop and the second stop are located on two opposite sides of the sand box, thereby adapting to sand boxes of different sizes.

[0014] Preferably, an intermediate push block is provided between the first leveling block and the second leveling block. The side of the first leveling block near the second leveling block and the side of the second leveling block near the first leveling block are both inclined. The first leveling block and the second leveling block are respectively provided with a first limiting block and a second limiting block. The two opposite sides of the intermediate push block are respectively provided with a first limiting groove for sliding cooperation of the first limiting block and a second limiting groove for sliding cooperation of the second limiting block.

[0015] By adopting the above technical solution, the spacing adjustment component is used to adjust the first stop block and the second stop block to move closer or further apart. When the first stop block and the second stop block move closer or further apart, the first leveling block and the second leveling block move closer or further apart. The first limiting block slides and engages with the first limiting groove, and the second limiting block slides and engages with the second limiting groove, thereby continuously keeping the middle push block between the first leveling block and the second leveling block. This reduces the occurrence of situations where some molding sand cannot be leveled due to gaps between the first leveling block and the second leveling block.

[0016] Preferably, the spacing adjustment assembly includes an adjustment motor disposed within the housing, an adjustment worm gear disposed at the output end of the adjustment motor, an adjustment worm wheel rotatably disposed within the housing and meshing with the adjustment worm wheel, a first synchronous shaft coaxially disposed on the adjustment worm wheel, a first synchronous rod and a second synchronous rod disposed on the first synchronous shaft, a second synchronous shaft disposed on the side of the synchronous gear opposite to the drive rod, a third synchronous rod and a fourth synchronous rod disposed on the second synchronous shaft, a first hinge rod disposed between the first drive gear and the first connecting gear, and a second hinge rod disposed between the second drive gear and the second connecting gear;

[0017] The first drive gear is rotatably mounted on the first synchronizing rod and the third synchronizing rod, respectively. The second drive gear is rotatably mounted on the second synchronizing rod and the fourth synchronizing rod, respectively. The two ends of the first hinge rod are hinged to the first drive gear and the first connecting gear, respectively. The two ends of the second hinge rod are hinged to the second drive gear and the second connecting gear, respectively. A first guide rod and a second guide rod are slidably mounted inside the chassis. The first guide rod passes through the first stop block, and the second guide rod passes through the second stop block.

[0018] By adopting the above technical solution, the output end of the adjusting motor drives the adjusting worm to rotate, which in turn drives the adjusting worm wheel to rotate, which in turn drives the first synchronous shaft to rotate, which in turn drives the first synchronous rod and the second synchronous rod to rotate, which in turn drives the first drive gear and the second drive gear to rotate around the first synchronous shaft. At this time, the first drive gear and the second drive gear apply deflection forces to the first connecting gear and the second connecting gear respectively. After being deflected, the first connecting gear and the second connecting gear drive the first push block to slide relative to the first sliding groove and the second push block to slide relative to the second sliding groove respectively, thereby achieving the purpose of the first push block and the second push block moving closer to each other or further away from each other.

[0019] Preferably, the bottom of the chassis is provided with a lifting assembly for raising and lowering the chassis.

[0020] By adopting the above technical solution, the lifting component drives the machine box to rise and fall. At the same time as the machine box rises and falls, the first stop block and the second stop block rise and fall until the first stop block and the second stop block respectively abut against the two opposite sides of the sand box. At the same time as the first stop block and the second stop block rise and fall, the first leveling block and the second leveling block rise and fall. The molding sand overflowing from the sand box is pushed out by the first leveling block and the second leveling block. Therefore, it can be adapted to sand boxes of different heights.

[0021] Preferably, the lifting assembly includes a base, a lifting drive motor mounted on the base, a drive worm gear mounted on the output end of the lifting drive motor, a drive worm wheel rotatably mounted on the base and meshing with the drive worm gear, a plurality of lifting synchronous gears coaxially mounted on the drive worm wheel, a lifting lead screw mounted on the lifting drive gear, a lifting platform mounted on the bottom of the chassis, and a plurality of lifting guide rods mounted on the base.

[0022] The lifting screw is threadedly connected to the lifting platform, and the lifting guide rod slides through the lifting platform.

[0023] By adopting the above technical solution, the second worm gear is rotated, which in turn drives the second worm wheel to rotate. The second worm wheel, in turn, drives the adjusting screw to rotate. The adjusting screw, in turn, drives the first adjusting plate to rise and fall. The first adjusting plate, in turn, drives the first leveling block to rise and fall. The first leveling block, in turn, drives the second leveling block to rise and fall. The second leveling block, in turn, slides relative to the adjusting guide rod, thereby achieving the purpose of driving the first and second adjusting plates to rise and fall simultaneously.

[0024] Preferably, the lifting assembly includes a base, a lifting drive motor mounted on the base, a drive worm gear mounted on the output end of the lifting drive motor, a drive worm wheel rotatably mounted on the base and meshing with the drive worm wheel, a plurality of lifting synchronous gears coaxially mounted on the drive worm wheel, a lifting screw mounted on the lifting synchronous gears, a lifting platform mounted on the bottom of the chassis, a plurality of lifting guide rods mounted on the base, and the lifting drive gear mounted on the lifting screw.

[0025] The lifting drive gear meshes with the lifting synchronous gear, the lifting lead screw is threadedly connected to the lifting platform, and the lifting guide rod slides through the lifting platform.

[0026] By adopting the above technical solution, when the lifting drive motor is started, its output shaft rotates while driving the lifting worm gear to rotate. The rotation of the lifting worm gear simultaneously drives the rotation of the lifting worm wheel. The rotation of the lifting worm wheel simultaneously drives the rotation of the lifting synchronous gear. The rotation of the lifting synchronous gear simultaneously drives the rotation of the lifting drive gear. The rotation of the lifting drive gear simultaneously drives the rotation of the lifting screw. In addition, the lifting guide rod restricts the lifting platform to rotate with the lifting platform, thereby achieving the purpose of lifting the lifting platform and thus achieving the purpose of lifting the chassis.

[0027] Preferably, a fixing component for reinforcing the mold and the transport platform is provided between the transport platform and the mold.

[0028] By adopting the above technical solution, a fixed connection between the mold and the transportation platform is achieved through fixed components, thereby enhancing the stability of the mold during transportation.

[0029] Preferably, the fixing component includes a fixing elongated hole formed in the transport platform, a fixing block slidably disposed in the fixing elongated hole, a fixing threaded hole formed in the fixing block, a fixing rod disposed in the fixing block, a fixing through hole formed in the mold, and a fixing bolt threadedly connected to the fixing threaded hole, wherein the fixing rod is inserted into the fixing through hole.

[0030] By adopting the above technical solution, when the mold is placed on the transport platform, the sliding fixing block is moved until the fixing rod is engaged with the fixing through hole. Then, by rotating the fixing bolt, the fixing bolt is pressed against the inner wall of the fixing elongated hole facing its opening, thereby further enhancing the stability of the mold.

[0031] Preferably, the transport track is provided with a rotating track, a combustible paint recycling bin is provided on one side of the rotating track, a diversion plate is inclinedly provided on the rotating track, and the combustible paint recycling bin is connected to the combustible paint supply equipment.

[0032] By adopting the above technical solution, the rotating track rotates the transport platform holding the sand box by a certain angle. The staff connects the spray gun to the combustible coating supply equipment and sprays the combustible coating onto the surface of the cavity through the spray gun. The combustible coating flows into the combustible coating recycling box through the diversion plate, thereby realizing the reuse of combustible coating and saving the cost of using combustible coating.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. To achieve the goal of reusing molding sand and to solve the problem of some falling onto the transport platform or the ground of the processing site, thereby reducing environmental pollution at the processing site;

[0035] 2. The rotating track rotates the transport platform holding the sand box by a certain angle. The staff connects the spray gun to the combustible paint supply equipment and sprays the combustible paint onto the sand box. The combustible paint flows into the combustible paint recycling bin through the diversion plate, thereby realizing the reuse of combustible paint and saving the cost of using combustible paint. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure in this embodiment;

[0037] Figure 2 It is an exploded diagram used to illustrate the assembly relationship between the mold and the transport platform, and the assembly relationship between the mold and the sand box;

[0038] Figure 3 This is a structural diagram used to demonstrate the chassis;

[0039] Figure 4 It is a partial sectional view used to show the internal structure of the chassis;

[0040] Figure 5 It is a structural schematic diagram used to illustrate the meshing relationship between the first drive gear and the first connecting gear, the second drive gear and the second connecting gear;

[0041] Figure 6 It is a structural diagram used to illustrate the cooperative relationship between the first guide block and the first stop block, and between the second guide block and the second stop block;

[0042] Figure 7 This is a partial sectional view used to show the internal structure of the intermediate push block;

[0043] Figure 8 It is a structural diagram used to show the positional relationship between the sand collection box and the sand box.

[0044] Explanation of reference numerals in the attached drawings: 1. Transport track; 2. Transport platform; 3. Mold; 4. Fixed elongated hole; 5. Fixed block; 501. Fixed threaded hole; 6. Fixed rod; 7. Fixed through hole; 8. Fixed bolt; 9. Sand box; 10. Limiting block; 12. Sand receiving chamber; 13. Sand mixer; 14. Chassis; 15. Chassis cavity; 16. First sliding groove; 17. Second sliding groove; 18. First stop block; 19. Second stop block; 22. Adjusting motor; 23. Adjusting worm gear; 25. Adjusting worm wheel; 26. First synchronization. Shaft; 27, First Synchronizing Rod; 28, Second Synchronizing Rod; 29, First Drive Gear; 291, First Drive Gear Body; 292, First Rotating Rod; 293, Second Rotating Rod; 30, Second Drive Gear; 301, Second Drive Gear Body; 302, Third Rotating Rod; 303, Fourth Rotating Rod; 31, First Screw; 32, Second Screw; 33, First Connecting Gear; 331, First Connecting Gear Body; 332, First Rotating Shaft; 34, Second Connecting Gear; 341, Second Connecting Gear Body; 3 42. Second rotating shaft; 35. Drive motor; 36. Drive rod; 37. Synchronous gear; 38. Second synchronous shaft; 39. Third synchronous rod; 40. Fourth synchronous rod; 41. First hinge rod; 42. Second hinge rod; 43. Guide rail; 44. Guide groove; 45. First guide block; 46. Second guide block; 47. First guide rod; 48. Second guide rod; 49. Dustproof curtain for material guide trough; 50. First leveling block; 51. Second leveling block; 52. First limiting groove; 53. Second limiting groove; 54. Intermediate push block; 55. First limit block; 56. Second limit block; 57. Support frame; 58. Adjusting track; 59. Sand collection box; 60. Pipeline; 61. Air pump; 62. Base; 63. Lifting drive motor; 64. Drive worm gear; 65. Drive worm wheel; 66. Lifting synchronous gear; 67. Lifting screw; 68. Lifting platform; 69. Lifting guide rod; 70. Tilting mold release machine; 71. Rotating track; 72. Clamping assembly; 73. Drainage plate; 74. Combustible paint recycling box; 75. Drying oven. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0046] A molding sand casting production line, as shown in the reference Figure 1 and Figure 2 The system includes a transport track 1, on which a transport platform 2 is slidably mounted, and the transport platform 2 is square-shaped. A mold 3 is mounted on the side of the transport platform 2 opposite to the transport track 1. In this embodiment, the mold 3 is replaced according to the specifications of different products.

[0047] Reference Figure 2The transport platform 2 has several elongated fixing holes 4, which are positioned relative to the width of the transport platform 2. Fixing blocks 5 are slidably mounted on the fixing holes 4. Fixing rods 6 are mounted on the side of the fixing blocks 5 facing the mold 3. The mold 3 has fixing through holes 7 on the side facing the fixing blocks 5 for the fixing rods 6 to insert into. Fixing threaded holes 501 are provided on the fixing blocks 5, extending through both opposite sides of the fixing blocks 5, and fixing bolts 8 are threaded into the threaded holes 501. When the mold 3 is placed on the transport platform 2, the fixing blocks 5 slide relative to the elongated fixing holes 4 until the fixing rods 6 are inserted into the fixing through holes 7. Then, by rotating the fixing bolts 8, which are threaded into the threaded holes 501, the fixing bolts 8 are pressed against the inner wall of the elongated fixing holes 4 at their openings.

[0048] Reference Figure 2 A sand box 9 is installed on the side of the mold 3 facing away from the transport platform 2. The size of the sand box 9 is adapted to the mold 3, and several limiting blocks 10 are installed on the side of the mold 3 facing the sand box 9. Several limiting grooves (not shown in the example figure) are opened on the side of the sand box 9 facing the mold 3 for the corresponding insertion and engagement of the limiting blocks 10. Through the insertion and engagement of the limiting blocks 10 and the limiting grooves, the horizontal sliding of the sand box 9 relative to the mold 3 is restricted. A sand-containing cavity 12 is opened on the sand box 9, and the sand-containing cavity 12 extends through two opposite sides of the sand box 9.

[0049] Reference Figure 1 and Figure 2 A sand mixer 13 is installed on one side of the transport track 1. The sand mixer 13 is used to pour molding sand into the sand chamber 12 of the sand box 9. The molding sand contains a certain amount of resin, which makes the molding sand have a certain viscosity, ensuring that the mold 3 can withstand the pressure and thermal shock of the molten metal during the casting process.

[0050] Reference Figure 1 and Figure 4 A housing 14 is installed on the side of the transport track 1 near the sand mixer 13, and the housing 14 is square in shape. A housing cavity 15 is formed inside the housing 14, combined with... Figure 3 The chassis 14 has a first sliding groove 16 and a second sliding groove 17 on the side facing the transport track 1. Both the first sliding groove 16 and the second sliding groove 17 communicate with the chassis cavity 15 and are arranged relative to the length direction of the chassis 14. A first stop 18 is slidably installed in the first sliding groove 16, and a second stop 19 is slidably installed in the second sliding groove 17. Both the first stop 18 and the second stop 19 are square in shape.

[0051] Reference Figure 4 and Figure 5An adjusting motor 22 is mounted on the top of the housing cavity 15, and an adjusting worm gear 23 is connected to the output end of the adjusting motor 22. An adjusting worm wheel 25 is rotatably mounted on the inner side of the housing cavity 15 facing the first sliding groove 16, and the adjusting worm wheel 25 meshes with the adjusting worm gear 23. A first synchronous shaft 26 is coaxially mounted on the adjusting worm wheel 25, and a first synchronous rod 27 and a second synchronous rod 28 are respectively mounted on the two opposite sides of the first synchronous shaft 26. A first drive gear 29 is rotatably mounted on the end of the first synchronous rod 27 away from the first synchronous shaft 26, and a second drive gear 30 is rotatably mounted on the end of the second synchronous rod 28 away from the first synchronous shaft 26. A first screw 31 is threadedly connected to one side of the first stop block 18, and a second screw 32 is threadedly connected to one side of the second stop block 19. A first connecting gear 33 is connected to the end of the first screw 31 away from the first stop block 18, and a second connecting gear 34 is connected to the end of the second screw 32 away from the second stop block 19.

[0052] Reference Figure 4 and Figure 5 When the regulating motor 22 starts, its output shaft drives the regulating worm 23 to rotate. The rotation of the regulating worm 23 drives the regulating worm wheel 25 to rotate. The rotation of the regulating worm wheel 25 drives the first synchronous shaft 26 to rotate around the central axis of the regulating worm wheel 25. The first synchronous shaft 26 drives the first synchronous rod 27 and the second synchronous rod 28 to rotate around the central axis of the regulating worm wheel 25. While the first synchronous rod 27 and the second synchronous rod 28 are rotating, they drive the first drive gear 29 and the second drive gear 30 to rotate around the central axis of the regulating worm wheel 25. At the same time, the first drive gear 29 and the second drive gear 30 apply a deflection force to the first connecting gear 33 and the second connecting gear 34, thereby realizing the sliding of the first stop block 18 relative to the first sliding groove 16 and the sliding of the second stop block 19 relative to the second sliding groove 17, thereby adjusting the distance between the first stop block 18 and the second stop block 19.

[0053] Reference Figure 3 and Figure 4 The first linkage gear 33 meshes with the first drive gear 29, and the second linkage gear 34 meshes with the second drive gear 30. The first linkage gear 33 includes a first linkage gear body 331 and a first rotating shaft 332 mounted on one side of the first linkage gear body 331. The second linkage gear 34 includes a second linkage gear body 341 and a second rotating shaft 342 mounted on one side of the second linkage gear body 341. Specifically, the first rotating shaft 332 is rotatably mounted on the first stop 18, and the second rotating shaft 342 is rotatably mounted on the second stop 19.

[0054] Reference Figure 4 and Figure 5The first drive gear 29 includes a first drive gear body 291, a first rotating rod 292 rotatably mounted on one side of the first drive gear body 291, and a second rotating rod 293 rotatably mounted on the side of the first drive gear body 291 away from the first rotating rod 292. The second drive gear 30 includes a second drive gear body 301, a third rotating rod 302 rotatably mounted on one side of the second drive gear body 301, and a fourth rotating rod 303 rotatably mounted on the side of the second drive gear body 301 away from the third rotating rod 302. Specifically, the first rotating rod 292 and the second rotating rod 293 are both rotatably mounted on the central axis of the first drive gear body 291; the third rotating rod 302 and the fourth rotating rod 303 are both rotatably mounted on the central axis of the second drive gear body 301. The first rotating rod 292 is rotatably mounted on the first synchronizing rod 27, and the third rotating rod 302 is rotatably mounted on the second synchronizing rod 28.

[0055] Reference Figure 4 and Figure 5 A drive motor 35 is mounted on the inner wall of the chassis cavity 15. The output end of the drive motor 35 is connected to a drive rod 36. The end of the drive rod 36 away from the drive motor 35 rotatably passes through a first synchronous shaft 26 and is connected to a synchronous gear 37. A first connecting gear 33 meshes with a first drive gear 29, and the first drive gear 29 meshes with one end of the synchronous gear 37. A second connecting gear 34 meshes with a second drive gear 30, and the second drive gear 30 meshes with the other end of the synchronous gear 37. A second synchronous shaft 38 is mounted on the side of the synchronous gear 37 away from the drive rod 36. A third synchronous rod 39 and a fourth synchronous rod 40 are mounted on two opposite sides of the second synchronous shaft 38, respectively. A second rotating rod 293 is rotatably mounted on the third synchronous rod 39, and a fourth rotating rod 303 is rotatably mounted on the fourth synchronous rod 40. The second rotating rod 293 is hinged to the first hinge rod 41, and the fourth rotating rod 303 is hinged to the second hinge rod 42. The end of the first hinge rod 41 away from the second rotating rod 293 is hinged to the first rotating shaft 332, and the end of the second hinge rod 42 away from the fourth rotating rod 303 is hinged to the second rotating shaft 342.

[0056] Refer to 4 and Figure 6 A guide rail 43 is installed inside the chassis cavity 15, with two opposite sides of the guide rail 43 respectively installed on two opposite inner walls of the chassis cavity 15. A guide groove 44 is formed on the side of the guide rail 43 facing the first stop 18, and a first guide block 45 and a second guide block 46 are slidably installed in the guide groove 44. A first guide rod 47 is fixedly installed on the side of the first guide block 45 facing the first stop 18, and a second guide rod 48 is fixedly installed on the side of the second guide block 46 facing the second stop 19. The first guide rod 47 slides through the first stop 18, and the second guide rod 48 slides through the second stop 19.

[0057] Refer to 4 and Figure 5When the drive motor 35 starts, the output shaft of the drive motor 35 rotates, simultaneously driving the synchronous gear 37 to rotate. The synchronous gear 37, in turn, drives the first drive gear 29 and the second drive gear 30 to rotate. The first drive gear 29, in turn, drives the first connecting gear 33 to rotate. The first connecting gear 33, in turn, drives the first screw 31 to rotate. Figure 6 While the first screw 31 rotates, it also slides through the first guide rod 47 onto the first stop block 18, thereby driving the first stop block 18 to slide towards or away from the transport track 1. The second stop block 19 operates on the same principle as the first stop block 18, sliding towards or away from the transport track 1. Simultaneously, the sliding of the first stop block 18 and the second stop block 19 towards the transport track 1 causes the first leveling block 50 and the second leveling block 51 to slide, leveling the overflowing molding sand and pushing it out of the sand box 9.

[0058] Reference Figure 3 and Figure 7 A first leveling block 50 is installed on the side of the first stop 18 facing the second stop 19, and a second leveling block 51 is installed on the side of the second stop 19 facing the first stop 18. Both the side of the first leveling block 50 closest to the second leveling block 51 and the side of the second leveling block 51 closest to the first leveling block 50 are inclined. A middle push block 54 is slidably installed between the first leveling block 50 and the second leveling block 51, and the middle push block 54 is trapezoidally shaped. The first leveling block 50 and the second leveling block 51 are respectively provided with a first limiting block 55 and a second limiting block 56. The two opposite sides of the middle push block 54 are respectively provided with a first limiting groove 52 for sliding engagement of the first limiting block 55 and a second limiting groove 53 for sliding engagement of the second limiting block 56. Both the first limiting block 55 and the second limiting block 56 are T-shaped, and the first limiting block 55 and the second limiting block 56 slide engagement with the first limiting groove 52 and the second limiting groove 53, respectively.

[0059] In addition, refer to Figure 7 Dustproof curtains 49 for guiding materials are installed in both the first limiting groove 52 and the second limiting groove 53. The dustproof curtains 49 for guiding materials are used to reduce the amount of molding sand entering the first limiting groove 52 or the second limiting groove 53, thereby preventing the limiting block 10 from sliding in the limiting groove.

[0060] Reference Figure 3 and Figure 7When the distance between the first stop block 18 and the second stop block 19 changes, the distance between the first leveling block 50 and the second leveling block 51 changes simultaneously. At the same time, the sliding engagement of the first limiting block 55 and the first limiting groove 52, and the sliding engagement of the second limiting block 56 and the second limiting groove 53, ensure that the intermediate push block 54 remains between the first limiting block 55 and the second limiting block 56, thereby ensuring that the first limiting block 55 and the second limiting block 56 can also be leveled and pushed out by the intermediate push block 54.

[0061] Reference Figure 1 and Figure 8 A support frame 57 is installed on the side of the transport track 1 away from the housing 14. An adjusting track 58 is installed at the bottom of the support frame 57, and the adjusting track 58 is set relative to the width direction of the transport track 1. The support frame 57 and the adjusting track 58 slide together. A sand collection box 59 is installed on the side of the support frame 57 facing the housing 14. The sand collection box 59 is open and the opening direction is away from the adjusting track 58. A pipe 60 is installed on the side of the sand collection box 59 facing the sand mixer 13. The end of the pipe 60 away from the sand collection box 59 is connected to the sand mixer 13. An air pump 61 is installed on the pipe 60. The air pump 61 draws molding sand from the sand collection box 59 and transports it to the sand mixer 13, thereby providing molding sand to the sand mixer 13.

[0062] Reference Figure 3 The bottom of the chassis 14 is equipped with a lifting assembly for driving the chassis 14 to rise and fall. Specifically, the lifting assembly includes a base 62 installed on the construction site, a lifting drive motor 63 rotatably installed on the base 62, a drive worm gear 64 connected to the output end of the lifting drive motor 63, a drive worm wheel 65 rotatably installed on the base 62, several lifting synchronous gears 66 coaxially arranged on the drive worm wheel 65, a lifting screw 67 installed on the side of the lifting synchronous gear 66 away from the base 62, a lifting platform 68 installed at the bottom of the chassis 14, several lifting guide rods 69 installed on the base 62, and a lifting drive gear 671 fixedly sleeved on the lifting screw 67. Among them, the lifting drive gear 671 meshes with the lifting synchronous gear 66, the lifting screw 67 is threadedly connected to the lifting platform 68, and the lifting guide rods 69 slide through the lifting platform 68. When the lifting drive motor 63 starts, its output shaft drives the drive worm 64 to rotate. The rotation of the drive worm 64 drives the drive worm wheel 65 to rotate. The rotation of the drive worm wheel 65 drives the lifting synchronous gear 66 to rotate. The rotation of the lifting synchronous gear 66 drives the lifting drive gear 671 to rotate. The rotation of the lifting drive gear 671 drives the lifting screw 67 to rotate. The rotation of the lifting screw 67, together with the lifting guide rod 69, slides through the lifting platform 68, thereby achieving the purpose of lifting the lifting platform 68, and thus achieving the purpose of lifting the chassis 14.

[0063] Reference Figure 1 and Figure 2 A tilting and mold-removing machine 70 is installed on the transport track 1. The tilting and mold-removing machine 70 is used to tilt the transport platform 2 and separate the mold 3 from the sand box 9. The transport track 1 slides the separated mold 3 toward the mold removal working area; the transport track 1 slides the separated sand box 9 toward the drying oven 75.

[0064] Reference Figure 1 and Figure 2 A rotating track 71 is installed on the transport track 1. When the transport platform 2 holding the sand box 9 is located on the rotating track 71, the transport track 1 rotates the transport platform 2 holding the sand box 9 at a certain angle. A clamping assembly 72 is installed on the rotating track 71 to clamp the sand box 9, which improves the stability of the sand box 9 when the rotating track 71 rotates the transport platform 2 holding the sand box 9. A diversion plate 73 is installed at an angle on the top of the rotating track 71. A combustible paint recovery box 74 is installed on one side of the transport track 1. When the transport platform 2 holding the sand box 9 is rotated at a certain angle by the transport track 1, the operator connects the spray gun to the combustible paint supply equipment and sprays the combustible paint onto the sand box 9. The combustible paint flows into the combustible paint recovery box 74 through the diversion plate 73. The combustible paint recovery box 74 is connected to the combustible paint supply equipment.

[0065] Reference Figure 1 and Figure 2 An oven 75 is installed at one end of the transport track 1 near the transport track 1. The oven 75 is used to dry the sand box 9. Before the sand box 9 enters the oven 75 after passing through the transport track 1, the workers use tools to ignite the combustible coating on the sand box 9, and then put the sand core after the combustible coating has burned into the oven 75 for drying.

[0066] The implementation principle of this application is as follows: First, the worker places the mold 3 on the transport platform 2, then installs the sand box 9 on the mold 3. The transport platform 2 is then transported towards the sand mixer 13 via the transport track 1. Molding sand is poured into the sand box 9 by the sand mixer 13. Once the molding sand covers the surface of the sand box 9, the transport platform 2 is transported towards the machine housing 14 via the transport track 1. The drive motor 35 is started, driving the synchronous gear 37 to rotate. Simultaneously, the synchronous gear 37 drives the first drive gear 29 and the second drive gear 30 to rotate around the first synchronous shaft 26. The first drive gear 29 and the second drive gear apply a biasing force to the first connecting gear 33 and the second connecting gear 34, driving the first stop block 18 and the second drive gear 34. The second stop block 19 slides towards the transport track 1, simultaneously causing the first leveling block 50 and the second leveling block 51 to slide towards the transport track 1. At this time, the first stop block 18 and the second stop block 19 are located on both sides of the sand box 9. As the first leveling block 50 and the second leveling block 51 slide, they level the molding sand on the surface of the sand box 9. Therefore, some of the molding sand on the surface of the sand box 9 is pushed by the first leveling block 50 and the second leveling block 51 and falls into the sand collection box 59 for collection. The molding sand in the sand collection box 59 is then transferred to the sand mixer 13 through the air pump 61 on the pipeline 60, thereby achieving the purpose of reusing the molding sand and preventing some from falling onto the transport platform 2 or the ground of the processing site, thus reducing environmental pollution at the processing site.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sand casting line comprising a transport track (1), one side of which is provided with a sand mixer (13), characterized in that: A transport platform (2) is slidably mounted on the transport track (1). A mold (3) is mounted on the transport platform (2). A sand box (9) is mounted on the mold (3). A housing (14) is mounted on one side of the transport track (1). A housing cavity (15) is opened inside the housing (14). A first sliding groove (16) and a second sliding groove (17) are opened on the side of the housing (14) facing the transport track (1). The first sliding groove (16) and the second sliding groove (17) are both connected to the housing cavity (15). The first sliding groove (16) and the second sliding groove (17) are arranged relative to the length direction of the housing (14). A first stop (18) is slidably mounted on the first sliding groove (16). The second sliding groove (17) is slidably mounted with a second stop (19). The first stop (18) is provided with a first leveling block (50) on the side facing the second stop (19). The second stop (19) is provided with a second leveling block (51) on the side facing the first stop (18). The housing (14) is provided with a sliding drive assembly for driving the first stop (18) and the second stop (19) to slide toward or away from the transport track (1). The transport track (1) is provided with a sand collection box (59) on the side away from the housing (14). The sand collection box (59) is provided with a pipe (60) with an air pump (61). The end of the pipe (60) away from the sand collection box (59) is connected to the sand mixer (13). The sliding drive assembly includes a drive motor (35) disposed in the chassis (14), a drive rod (36) disposed at the output end of the drive motor (35), a synchronous gear (37) sleeved on one end of the drive rod (36), a first screw (31) threadedly connected to the first stop (18), a first connecting gear (33) disposed on the first screw (31), a second screw (32) disposed on the second stop (19), a second connecting gear (34) disposed on the second screw (32), a first drive gear (29) and a second drive gear (30) rotatably disposed in the chassis (14), and a first guide rod (47) and a second guide rod (48) disposed in the chassis (14); the first drive gear (29) and the second drive gear (30) respectively mesh with the first connecting gear (33) and the second connecting gear (34), and both the first drive gear (29) and the second drive gear (30) mesh with the synchronous gear (37); A guide rail (43) is installed inside the chassis cavity (15). The two opposite sides of the guide rail (43) are respectively installed on the two opposite inner walls of the chassis cavity (15). A guide groove (44) is opened on the side of the guide rail (43) facing the first stop (18). A first guide block (45) and a second guide block (46) are slidably installed in the guide groove (44). A first guide rod (47) is fixedly installed on the side of the first guide block (45) facing the first stop (18). A second guide rod (48) is fixedly installed on the side of the second guide block (46) facing the second stop (19). The first guide rod (47) slides through the first stop (18), and the second guide rod (48) slides through the second stop (19). An adjustment component for adjusting the distance between the first stop (18) and the second stop (19) is provided inside the chassis (14). The spacing adjustment assembly includes an adjustment motor (22) disposed in the housing (14), an adjustment worm (23) disposed at the output end of the adjustment motor (22), an adjustment worm wheel (25) rotatably disposed in the housing (14) and meshing with the adjustment worm (23), a first synchronous shaft (26) coaxially disposed on the adjustment worm wheel (25), a first synchronous rod (27) and a second synchronous rod (28) disposed on the first synchronous shaft (26), a second synchronous shaft (38) disposed on the side of the synchronous gear (37) away from the drive rod (36), a third synchronous rod (39) and a fourth synchronous rod (40) disposed on the second synchronous shaft (38), a first hinge rod (41) disposed between the first drive gear (29) and the first connecting gear (33), and a second hinge rod (42) disposed between the second drive gear (30) and the second connecting gear (34). The first drive gear (29) is rotatably mounted on the first synchronous rod (27) and the third synchronous rod (39), the second drive gear (30) is rotatably mounted on the second synchronous rod (28) and the fourth synchronous rod (40), the two ends of the first hinge rod (41) are respectively hinged to the first drive gear (29) and the first connecting gear (33), the two ends of the second hinge rod (42) are respectively hinged to the second drive gear (30) and the second connecting gear (34), and the first guide rod (47) and the second guide rod (48) are slidably mounted inside the housing (14), the first guide rod (47) passes through the first stop (18), and the second guide rod (48) passes through the second stop (19); An intermediate push block (54) is provided between the first leveling block (50) and the second leveling block (51). The side of the first leveling block (50) near the second leveling block (51) and the side of the second leveling block (51) near the first leveling block (50) are both inclined. The first leveling block (50) and the second leveling block (51) are respectively provided with a first limiting block (55) and a second limiting block (56). The two opposite sides of the intermediate push block (54) are respectively provided with a first limiting groove (52) for the first limiting block (55) to slide and a second limiting groove (53) for the second limiting block (56) to slide and cooperate.

2. A sand casting line according to claim 1, characterized in that: The bottom of the chassis (14) is provided with a lifting assembly for raising and lowering the chassis (14).

3. A sand casting line according to claim 2, characterized in that: The lifting assembly includes a base (62), a lifting drive motor (63) mounted on the base (62), a drive worm (64) mounted on the output end of the lifting drive motor (63), a drive worm wheel (65) rotatably mounted on the base (62) and meshing with the drive worm (64), a lifting synchronization gear (66) coaxially mounted on the drive worm wheel (65), a lifting lead screw (67) mounted on the lifting drive gear (671), a lifting platform (68) mounted at the bottom of the chassis (14), and a plurality of lifting guide rods (69) mounted on the base (62) and a lifting drive gear (671) fixedly sleeved on the lifting lead screw (67). The lifting synchronization gear (66) meshes with the lifting drive gear (671). The lifting screw (67) is threadedly connected to the lifting platform (68), the lifting guide rod (69) slides through the lifting platform (68), and the lifting drive gear (671) meshes with the lifting synchronous gear (66).

4. The molding sand casting production line according to claim 3, characterized in that: A fixing component for reinforcing the mold (3) and the transport platform (2) is provided between the transport platform (2) and the mold (3).

5. A molding sand casting production line according to claim 4, characterized in that: The fixing component includes a fixing elongated hole (4) opened on the transport platform (2), a fixing block (5) slidably disposed in the fixing elongated hole (4), a fixing threaded hole (501) opened on the fixing block (5), a fixing rod (6) disposed on the fixing block (5), a fixing through hole (7) opened on the mold (3), and a fixing bolt (8) threadedly connected to the fixing threaded hole (501). The fixing rod (6) is inserted into the fixing through hole (7).

6. The molding sand casting production line according to claim 1, characterized in that: A rotating track (71) is provided on the transport track (1), and a combustible paint recycling box (74) is provided on one side of the rotating track (71). A diversion plate (73) is inclinedly provided on the rotating track (71), and the combustible paint recycling box (74) is connected to the combustible paint supply equipment.

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