Hot core sand mold forming equipment

Abstract

The invention discloses hot core sand mold forming equipment, and relates to the technical field of hot core sand mold forming, the hot core sand mold forming equipment comprises a base, the side wall of the top of the base is provided with a pair of first channels, the first channels are symmetrically arranged at the top of the base, and the inner side wall of the bottom of each first channel is slidably connected with a mold vertical plate; by arranging the mold vertical plate, the fixed mold base and the mold top plate, a formed sand core can be easily demolded, the situation that the sand core is damaged or a casting is deformed due to difficult demolding is reduced, the sand core is ensured to be complete, and therefore the shape and size precision of the casting is kept; the surface quality and the overall quality of the sand core are improved, abrasion of the mold can be increased in the difficult demolding process, the mold can be protected against unnecessary damage through easy demolding, the service life of the mold is prolonged, and therefore the production cost is reduced, meanwhile, production stagnation caused by difficult demolding is reduced, the production process is accelerated, and the production efficiency is improved. The overall production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hot core sand mold forming, in particular to hot core sand mold forming equipment. Background Art

[0002] Sand core is a material used to make cores in casting production. It is usually made of casting sand, sand binder (such as resin, curing agent, etc.) and additives and other molding materials mixed in a certain proportion. Sand core can accurately provide space and shape to the inside of the casting. By using sand core, the integrity and accuracy of the internal structure of the casting can be ensured, thereby improving the overall quality of the casting.

[0003] The invention patent with publication number CN220347124U discloses a hot core sand mold forming device. The above technical solution realizes filling the cooling liquid into the cooling layer of the mold through the cooperation of the liquid inlet pipe and the liquid discharge pipe, which is convenient for the sand core in the mold groove to be quickly cooled and formed. However, the hot core sand mold forming structure is not convenient for rapid mold separation. The sand core formed in the mold will be difficult to demold, resulting in sand core breakage or casting deformation.

[0004] To this end, the present invention provides a hot core sand mold forming device. Summary of the invention

[0005] In order to improve the problem of difficulty in demoulding the sand core after molding, the present invention provides a hot core sand mold molding device.

[0006] The hot core sand mold forming equipment provided by the present invention adopts the following technical solution:

[0007] A hot core sand mold forming device comprises a base, a first groove is formed on the top side wall of the base, the first groove is a pair and symmetrically arranged on the top of the base, a mold vertical plate is slidably connected to the inner side wall at the bottom of the first groove, a moving component is provided in the middle of the side wall of the mold vertical plate, a fixed mold base is fixedly connected to the top side wall of the base, the fixed mold base and the mold vertical plate are arranged correspondingly, a heating component is provided in the middle of the side wall of the fixed mold base, a second groove is formed on the top side wall of the mold vertical plate, a mold top plate is slidably connected to the middle of the inner side wall of the second groove, an injection component is provided on the top side wall of the mold top plate, a push-pull plate is fixedly connected to the middle of the side wall of the mold top plate, and a locking component is provided in the middle of the side wall of the mold vertical plate.

[0008] By adopting the above technical scheme, by setting the mold vertical plate, the fixed mold base and the mold top plate, the formed sand core can be easily demolded, reducing the situation of sand core breakage or casting deformation caused by demolding difficulties, ensuring the integrity of the sand core to maintain the shape and dimensional accuracy of the casting, and improving the surface quality and overall quality of the sand core. The difficult demolding process will increase the wear of the mold, while easy demolding can protect the mold from unnecessary damage and extend the service life of the mold, thereby reducing production costs. At the same time, this setting reduces production stagnation caused by demolding difficulties, thereby speeding up the production process and improving overall production efficiency.

[0009] Preferably, the movable component includes a first groove, which is a pair and symmetrically opened on the top of the base, a two-way threaded rod is rotatably connected to the middle of the inner side wall of the first groove, a control valve is fixed to the end of the two-way threaded rod, a movable block is slidably connected to the middle of the side wall of the two-way threaded rod, the movable block slides inside the first groove, a connecting rod is fixed to the middle of the side wall of the movable block, and the other end of the connecting rod is fixed to the mold vertical plate.

[0010] By adopting the above technical solution, the mold vertical plate can be quickly moved by setting a two-way threaded rod, a control valve, a movable block and a connecting rod, and the demolding process can be completed quickly and reliably, reducing the residence time of the sand core in the fixed mold base and shortening the production cycle. At the same time, this setting can reduce the wear and damage of the mold caused by frequent demolding, thereby extending the service life of the mold and reducing the cost of mold replacement.

[0011] Preferably, the heating assembly includes a water pipe, which is a pair and symmetrically arranged on both sides of the fixed mold base. The water inlet end of the water pipe is fixedly connected to a water injection port, and the water outlet end of the water pipe is fixedly connected to a water outlet. A hot water tank is provided inside the fixed mold base, and the water pipe, water injection port, water outlet and hot water tank are connected.

[0012] By adopting the above technical scheme, a water pipe, a water injection port, a water outlet and a hot water tank are set, and by circulating heating the sand core raw material in the fixed mold base, the temperature of the sand core raw material can be evenly increased, so that the resin and other additives on the surface of the sand core raw material can be quickly melted and evenly adhered to the surface of the sand particles to form a uniform coating layer. In addition, through hot water circulation heating, the sand mold strength of the sand core raw material will be improved, and it can withstand higher casting pressure and temperature, reducing the risk of sand mold deformation and cracking, thereby ensuring the smooth progress of the casting process.

[0013] Preferably, the injection assembly includes a fixed cylinder, which is fixedly connected to the top of the mold top plate, a movable plate is slidably fitted in the middle of the inner side wall of the fixed cylinder, the movable plate and the fixed cylinder are interference fit, a movable rod is fixedly connected to the top side wall of the movable plate, a pressing plate is fixedly connected to the top side wall of the movable rod, a feed pipe is fixedly connected to the middle of the side wall of the fixed cylinder, the fixed cylinder and the feed pipe are connected, and a pipe clamp assembly is provided on the bottom side wall of the pressing plate.

[0014] By adopting the above technical solution and this arrangement, some tiny gaps or defects inside the sand mold can be supplemented in time, making the sand mold more compact and uniform, thereby improving the molding accuracy of the casting. In addition, by supplementing the sand core raw materials during the sand core molding process, it is possible to prevent the deformation of the sand mold during the pouring process, resulting in inaccurate casting size or distorted shape, thereby further enhancing the structural strength of the sand mold and reducing the risk of deformation.

[0015] Preferably, the tube clamp assembly includes a first fixing plate, the first fixing plate is fixed to the bottom of the pressing plate, the bottom side wall of the first fixing plate is fixed with a first protrusion, the top side wall of the mold top plate is fixed with a second fixing plate, the top side wall of the second fixing plate is provided with a second groove, and the first protrusion and the second groove are correspondingly arranged.

[0016] By adopting the above technical solution, by setting the first fixed plate, the first protrusion, the second fixed plate and the second groove, it is possible to prevent the sand core material remaining in the feed pipe from being squeezed into the rod cavity of the fixed cylinder under the action of the pressure difference, rather than all entering the fixed mold base, thereby reducing the situation in which the sand core material overflowing into the rod cavity of the fixed cylinder is fixed and thus hinders the movement of the movable plate, and reduces the pollution to the equipment caused by the overflow of the sand core material, resulting in extra time and manpower for cleaning and processing, thereby reducing production efficiency.

[0017] Preferably, the locking assembly includes a fixing rod, which is a pair of fixing rods symmetrically arranged on both sides of the mold vertical plate, a plurality of springs are fixedly connected to the middle of the side wall of the fixing rod, a spring plate is fixedly connected to the other end of the spring, a plurality of rotating plates are rotatably connected to the middle of the side wall of the fixed mold base, the rotating plates and the fixing rods are correspondingly arranged, and a slot is opened in the middle of the side wall of the rotating plate.

[0018] By adopting the above technical solution, by setting fixed rods, springs, spring plates, rotating plates and slots, the mold vertical plate, fixed mold base and mold top plate can form a more stable overall structure, thereby enhancing the mold's ability to resist deformation during the molding process and ensuring the stability of the mold. At the same time, this setting effectively prevents the mold vertical plate, fixed mold base and mold top plate from shifting or deforming when subjected to external forces, thereby ensuring the accuracy of the sand core size and consistency of the shape after molding.

[0019] Preferably, a second protrusion is fixedly connected to the middle of the side wall of the mold vertical plate, a third groove is opened in the middle of the side wall of the fixed mold base, the third groove is a pair and is symmetrically arranged on both sides of the fixed mold base, the second protrusion and the third groove are arranged correspondingly, a third protrusion is fixedly connected to the middle of the side wall of one mold top plate, and a fourth groove is opened in the middle of the other mold top plate side wall, the third protrusion and the fourth groove are arranged correspondingly.

[0020] By adopting the above technical solution, by setting the second protrusion, the third groove, the third protrusion and the fourth groove, the concave and convex parts can be engaged with each other to achieve a stable connection between the mold vertical plate, the fixed mold base and the mold top plate, further reducing the displacement or deformation of the mold caused by loosening or failure of the fixation between the mold vertical plate, the fixed mold base and the mold top plate.

[0021] Preferably, a first sealing gasket is fixedly connected to the middle of the side wall of the second protrusion, and a second sealing gasket is fixedly connected to the middle of the side wall of the third protrusion, and both the first sealing gasket and the second sealing gasket are made of elastic material.

[0022] By adopting the above technical solution and setting the first sealing gasket and the second sealing gasket, the sand core raw material can be prevented from leaking from the gaps between the mold vertical plate, the fixed mold base and the mold top plate, ensuring that the mold remains tightly sealed during the mold closing and working process, effectively preventing the sand core raw material from overflowing.

[0023] Preferably, an elastic pad is fixedly connected to the middle of the side wall of the push-pull plate, and the elastic pad is made of elastic material.

[0024] By adopting the above technical solution and arranging the elastic pad, the friction between the processing personnel's hands and the push-pull plate can be increased, so that the hands are more stable and less likely to slip during the pushing and pulling process.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects:

[0026] 1. By setting the mold stand, fixed mold base and mold top plate, the molded sand core can be easily demolded, reducing the situation of sand core damage or casting deformation caused by demolding difficulties, ensuring the integrity of the sand core to maintain the shape and dimensional accuracy of the casting, and improving the surface quality and overall quality of the sand core. The difficult demolding process will increase the wear of the mold, while easy demolding can protect the mold from unnecessary damage and extend the service life of the mold, thereby reducing production costs. At the same time, this setting reduces production stagnation caused by demolding difficulties, thereby speeding up the production process and improving overall production efficiency;

[0027] 2. The mold stand can be quickly moved by setting up a two-way threaded rod, a control valve, a movable block and a connecting rod, and the demoulding process can be completed quickly and reliably, which reduces the residence time of the sand core in the fixed mold base and shortens the production cycle. At the same time, this setting can reduce the wear and damage of the mold caused by frequent demoulding, thereby extending the service life of the mold and reducing the cost of mold replacement;

[0028] 3. By setting the first fixed plate, the first protrusion, the second fixed plate and the second groove, it can be avoided that the sand core material remaining inside the feed pipe is squeezed into the rod cavity of the fixed cylinder under the action of the pressure difference, instead of all entering the fixed mold base, and the sand core material overflowing into the rod cavity of the fixed cylinder is fixed, thereby reducing the situation where the movement of the movable plate is hindered, and the pollution of the equipment caused by the overflow of the sand core material is reduced, resulting in extra time and manpower for cleaning and processing, thereby reducing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A perspective view of the present invention;

[0030] Figure 2 It is a schematic diagram of the use of the present invention;

[0031] Figure 3 It is a schematic diagram of the matching structure of the mold vertical plate and the mold top plate in the present invention;

[0032] Figure 4 It is a schematic diagram of the matching structure of the mold vertical plate and the bidirectional threaded rod in the present invention;

[0033] Figure 5 It is a schematic diagram of the matching structure of the mold top plate and the fixed cylinder in the present invention;

[0034] Figure 6 It is a schematic diagram of the matching structure of the water delivery pipe and the hot water tank in the present invention;

[0035] Figure 7 It is a schematic diagram of the matching structure of the water delivery pipe and the fixed mold base in the present invention;

[0036] Figure 8 It is a schematic diagram of the matching structure of the pressing plate and the fixing cylinder in the present invention.

[0037] 1. Base; 11. First groove; 12. Mould vertical plate; 13. Fixed mould base; 14. Second groove; 15. Mould top plate; 16. Push-pull plate; 2. First groove; 21. Bidirectional threaded rod; 22. Control valve; 23. Movable block; 24. Connecting rod; 3. Water pipe; 31. Water inlet; 32. Water outlet; 33. Hot water tank; 4. Fixed cylinder; 41. Movable plate; 42. Movable rod; 43. Pressing plate; 44. Feed pipe; 5. First fixed plate; 51. First protrusion; 52. Second fixed plate; 53. Second groove; 6. Fixed rod; 61. Spring; 62. Spring plate; 63. Rotating plate; 64. Slot; 7. Second protrusion; 71. Third groove; 72. Third protrusion; 73. Fourth groove; 8. First sealing pad; 81. Second sealing pad; 9. Elastic pad. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-8 The present invention is described in further detail.

[0039] The embodiment of the invention discloses a hot core sand mold forming device.

[0040] Reference Figures 1 to 8A hot core sand mold forming device comprises a base 1, wherein the top side wall of the base 1 is provided with a first groove 11, wherein the first groove 11 is a pair and symmetrically arranged on the top of the base 1, wherein the inner side wall at the bottom of the first groove 11 is slidably connected with a mold vertical plate 12, wherein a moving component is arranged in the middle of the side wall of the mold vertical plate 12, wherein a fixed mold base 13 is fixedly connected with the top side wall of the base 1, wherein the fixed mold base 13 and the mold vertical plate 12 are arranged correspondingly, wherein a heating component is arranged in the middle of the side wall of the fixed mold base 13, wherein a second groove 14 is provided on the top side wall of the mold vertical plate 12, wherein a mold top plate 15 is slidably connected with the middle of the inner side wall of the second groove 14, wherein the mold top plate 15 is slidably connected with the mold top plate 15 ... The top side wall of the plate 15 is provided with an injection assembly, the middle of the side wall of the mold top plate 15 is fixedly connected with a push-pull plate 16, and the middle of the side wall of the mold vertical plate 12 is provided with a locking assembly. During operation, the processing personnel control the moving assembly to make a pair of mold vertical plates 12 approach the fixed mold base 13 along the first groove 11 at the same time, until the mold vertical plate 12 and the fixed mold base 13 are tightly attached together through the locking assembly. At this time, the mold vertical plate 12 and the fixed mold base 13 form a whole, and then the mixed sand core raw material is poured into the fixed mold base 13, and then the push-pull plate 16 on the top of the mold vertical plate 12 is pushed, so that the mold top plate 15 slides inside the second groove 14 until a pair of mold top plates 15 are tightly attached together through the locking assembly. At this time, the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15 form a sealed whole, sealing the sand core raw material inside. Then the processing personnel heats the sand core raw material in the fixed mold base 13 through the heating assembly to melt the resin on the surface of the sand core raw material, so that the sand core raw material is bonded together and finally formed. During the heating process, the sand core raw material in the fixed mold base 13 is supplemented by the injection assembly. After the sand core is formed, the processing personnel pull the push-pull plate 16 outward to separate a pair of mold top plates 15, and then control the moving assembly to move a pair of mold vertical plates 12 so that the mold vertical plates 12 are away from the fixed mold base 13. , and then take out the sand core formed in the fixed mold base 13. In this step, by setting the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15, the molded sand core can be easily demolded, reducing the situation where the sand core is damaged or the casting is deformed due to demolding difficulties, ensuring the integrity of the sand core to maintain the shape and dimensional accuracy of the casting, and improving the surface quality and overall quality of the sand core. The difficult demolding process will increase the wear of the mold, while easy demolding can protect the mold from unnecessary damage and extend the service life of the mold, thereby reducing production costs. At the same time, this setting reduces production stagnation caused by demolding difficulties, thereby speeding up the production process and improving overall production efficiency.

[0041] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6The moving component includes a first groove 2, which is a pair and symmetrically opened on the top of the base 1. A bidirectional threaded rod 21 is rotatably connected to the middle of the inner side wall of the first groove 2, and a control valve 22 is fixedly connected to the end of the bidirectional threaded rod 21. A movable block 23 is slidably connected to the middle of the side wall of the bidirectional threaded rod 21. The movable block 23 slides inside the first groove 2, and a connecting rod 24 is fixedly connected to the middle of the side wall of the movable block 23. The other end of the connecting rod 24 is fixedly connected to the mold vertical plate 12. When working, the processing personnel rotate a pair of control valves 22, and the control valve 22 will drive the bidirectional threaded rod 21 to rotate inside the first groove 2. During the rotation of the threaded rod 21, the movable block 23 will slide along the side wall of the bidirectional threaded rod 21, so that the connecting rod 24 fixed to the movable block 23 will move synchronously. When the connecting rod 24 moves, it will bring the mold vertical plate 12 closer to or away from the fixed mold base 13. This step can quickly move the mold vertical plate 12 by setting the bidirectional threaded rod 21, the control valve 22, the movable block 23 and the connecting rod 24, and can quickly and reliably complete the demolding process, reducing the residence time of the sand core in the fixed mold base 13 and shortening the production cycle. At the same time, this setting can reduce the wear and damage of the mold caused by frequent demolding, thereby extending the service life of the mold and reducing the cost of mold replacement.

[0042] Reference Figure 1 , Figure 6 and Figure 7 The heating component includes a water pipe 3, which is a pair and symmetrically arranged on both sides of the fixed mold base 13. The water inlet end of the water pipe 3 is fixedly connected with a water injection port 31, and the water outlet end of the water pipe 3 is fixedly connected with a water outlet 32. A hot water tank 33 is arranged inside the fixed mold base 13. The water pipe 3, the water injection port 31, the water outlet 32 ​​and the hot water tank 33 are connected. When working, after the sand core raw material is sealed inside the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15, the processing personnel connect the water injection port 31 with the water pump, and the water pump will pump hot water into the water pipe 3. Because the water pipe 3, the water injection port 31, the water outlet 32 ​​and the hot water tank 33 are connected, the hot water will The sand core raw material enters the hot water tank 33 through the water injection port 31, the water pipe 3 and the water outlet 32 ​​to heat the sand core raw material, and then flows out through the water pipe 3. In this step, the water pipe 3, the water injection port 31, the water outlet 32 ​​and the hot water tank 33 are set. By cyclically heating the sand core raw material in the fixed mold base 13, the temperature of the sand core raw material can be evenly increased, so that the resin and other additives on the surface of the sand core raw material can be quickly melted and evenly attached to the surface of the sand particles to form a uniform coating layer. In addition, through the hot water circulation heating, the sand mold strength of the sand core raw material will be improved, and it can withstand higher casting pressure and temperature, reducing the risk of sand mold deformation and cracking, thereby ensuring the smooth progress of the casting process.

[0043] Reference Figure 1 , Figure 5 , Figure 6 and Figure 8 The injection assembly includes a fixed cylinder 4, which is fixedly connected to the top of the mold top plate 15. A movable plate 41 is slidably matched in the middle of the inner side wall of the fixed cylinder 4. The movable plate 41 and the fixed cylinder 4 are interference-fitted. A movable rod 42 is fixedly connected to the top side wall of the movable plate 41. A pressing plate 43 is fixedly connected to the top side wall of the movable rod 42. A feed pipe 44 is fixedly connected to the middle of the side wall of the fixed cylinder 4. The fixed cylinder 4 and the feed pipe 44 are connected. A pipe clamp assembly is provided on the bottom side wall of the pressing plate 43. When working, the staff connects the feed pipe 44 to the external sand core raw material. During the heating and molding process of the sand core raw material in the fixed mold base 13, the feed pipe 44 is subjected to a pressure difference, which will push the external The sand core material of part is drawn into the fixed cylinder 4. At this time, the movable plate 41 is subjected to the pressure difference to squeeze the sand core material inside the fixed cylinder 4, and the sand core material is filled into the fixed mold base 13. After the filling is completed, the pipe clamp assembly will limit the delivery pipe 44 to prevent the delivery pipe 44 from continuing to transport the sand core material to the fixed cylinder 4. This step can be set up in time to supplement some tiny gaps or defects in the sand mold, making the sand mold more compact and uniform, and improving the molding accuracy of the casting. In addition, supplementing the sand core material during the sand core molding process can prevent the inaccurate size or shape distortion of the casting due to the deformation of the sand mold during the pouring process, further enhance the structural strength of the sand mold, and reduce the risk of deformation.

[0044] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 The tube clamp assembly includes a first fixed plate 5, which is fixedly connected to the bottom of the pressing plate 43. A first protrusion 51 is fixedly connected to the bottom side wall of the first fixed plate 5. A second fixed plate 52 is fixedly connected to the top side wall of the mold top plate 15. A second groove 53 is provided on the top side wall of the second fixed plate 52. The first protrusion 51 and the second groove 53 are correspondingly arranged. During operation, when the movable plate 41 moves downward due to the pressure difference, the movable plate 41 will move downward synchronously with the movable rod 42 and the pressing plate 43. When the pressing plate 43 moves downward, the first fixed plate 5 and the first protrusion 51 at the bottom of the pressing plate 43 will also move downward until Until the first protrusion 51 is inserted into the second groove 53, the channel for injecting the sand core raw material into the feed pipe 44 is blocked. This step prevents the sand core raw material remaining in the feed pipe 44 from being squeezed into the rod cavity of the fixed cylinder 4 under the action of the pressure difference by setting the first fixed plate 5, the first protrusion 51, the second fixed plate 52 and the second groove 53, instead of all entering the fixed mold base 13, thereby reducing the sand core raw material overflowing into the rod cavity of the fixed cylinder 4 and being fixed, thereby hindering the movement of the movable plate 41, reducing the pollution to the equipment caused by the overflow of the sand core raw material, resulting in extra time and manpower for cleaning and processing, and reducing production efficiency.

[0045] Reference Figures 1 to 7 The locking assembly includes a fixed rod 6, which is a pair of fixed rods 6 and symmetrically arranged on both sides of the mold vertical plate 12. A plurality of springs 61 are fixedly connected to the middle of the side wall of the fixed rod 6, and a spring plate 62 is fixedly connected to the other end of the spring 61. A plurality of rotating plates 63 are rotatably connected to the middle of the side wall of the fixed mold base 13. The rotating plates 63 and the fixed rod 6 are correspondingly arranged. A slot 64 is opened in the middle of the side wall of the rotating plate 63. When working, after the mold vertical plate 12 and the fixed mold base 13 are formed into a whole by the moving assembly, the processing personnel rotate the plurality of rotating plates 63 so that the slot 64 is buckled on the fixed rod 6. At this time, the fixed mold base 13 is fixed. The spring 61 and the spring plate 62 on the side wall of the rod 6 will press against the inner wall of the slot 64, so that the fixed rod 6 will not fall off from the slot 64. This step can make the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15 form a more stable overall structure by setting the fixed rod 6, the spring 61, the spring plate 62, the rotating plate 63 and the slot 64, thereby enhancing the mold's anti-deformation ability during the molding process and ensuring the stability of the mold. At the same time, this setting effectively prevents the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15 from shifting or deforming when subjected to external force, thereby ensuring the accuracy of the sand core size and the consistency of the shape after molding.

[0046] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The middle of the side wall of the mold vertical plate 12 is fixed with a second protrusion 7, the middle of the side wall of the fixed mold base 13 is provided with a third groove 71, the third groove 71 is a pair and symmetrically arranged on both sides of the fixed mold base 13, the second protrusion 7 and the third groove 71 are arranged correspondingly, the middle of the side wall of one mold top plate 15 is fixed with a third protrusion 72, the middle of the side wall of the other mold top plate 15 is provided with a fourth groove 73, the third protrusion 72 and the fourth groove 73 are arranged correspondingly, when working, when the mold vertical plate 12 and the fixed mold base 13 are close together, the side wall of the mold vertical plate 12 The second protrusion 7 will be inserted into the third groove 71 opened on the side wall of the fixed mold base 13. At the same time, when a pair of mold top plates 15 are attached together, the third protrusion 72 will be inserted into the fourth groove 73. In this step, by setting the second protrusion 7, the third groove 71, the third protrusion 72 and the fourth groove 73, the concave and convex parts can be engaged with each other to achieve a stable connection between the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15, further reducing the displacement or deformation of the mold caused by loosening or failure of the fixation between the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15.

[0047] Reference Figure 1 , Figure 5 , Figure 6 and Figure 8 A first sealing gasket 8 is fixedly connected to the middle of the side wall of the second protrusion 7, and a second sealing gasket 81 is fixedly connected to the middle of the side wall of the third protrusion 72. The first sealing gasket 8 and the second sealing gasket 81 are both made of elastic materials. In this step, by setting the first sealing gasket 8 and the second sealing gasket 81, the sand core material can be prevented from leaking from the gap between the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15, ensuring that the mold maintains a tight sealing state during the mold closing and working process, and effectively preventing the sand core material from overflowing.

[0048] Reference Figure 1 , Figure 2 , Figure 3 and Figure 8 An elastic pad 9 is fixedly connected to the middle of the side wall of the push-pull plate 16. The elastic pad 9 is made of elastic material. By setting the elastic pad 9 in this step, the friction between the processing personnel's hands and the push-pull plate 16 can be increased, making the hands more stable and less likely to slip during the push-pull process.

[0049] The implementation principle of a hot core sand mold forming device according to an embodiment of the present invention is as follows: a processing personnel controls a moving component to make a pair of mold vertical plates 12 approach a fixed mold base 13 along a first groove 11 at the same time, until the mold vertical plates 12 and the fixed mold base 13 are tightly attached together through a locking component, at which time the mold vertical plates 12 and the fixed mold base 13 form a whole, and then the mixed sand core raw material is poured into the fixed mold base 13, and then the push-pull plate 16 on the top of the mold vertical plate 12 is pushed to make the mold top plate 15 slide inside the second groove 14, until a pair of mold top plates 15 are tightly attached together through the locking component, at which time the mold vertical plates 12, the fixed mold base 13 and the mold top plate 15 form a sealed whole, sealing the sand core raw material inside, and then the processing personnel heat the mold vertical plates 12 and the fixed mold base 13 through the heating component. The sand core material in the fixed mold base 13 is heated to melt the resin on the surface of the sand core material so that the sand core material is bonded together and finally formed. During the heating process, the sand core material in the fixed mold base 13 is supplemented by the injection assembly. After the sand core is formed, the processing personnel pull the push-pull plate 16 outward to separate a pair of mold top plates 15, and then control the moving assembly to move a pair of mold vertical plates 12 so that the mold vertical plates 12 are away from the fixed mold base 13. Then, the sand core formed in the fixed mold base 13 is taken out, and the processing personnel rotate a pair of control valves 22. At this time, the control valve 22 will drive the bidirectional threaded rod 21 to rotate inside the first groove 2. During the rotation of the bidirectional threaded rod 21, the movable block 23 will slide along the side wall of the bidirectional threaded rod 21, so that the connecting rod fixed to the movable block 23 24 moves synchronously. When the connecting rod 24 moves, it will bring the mold vertical plate 12 closer to or away from the fixed mold base 13. After the sand core raw material is sealed inside the mold vertical plate 12, the fixed mold base 13 and the mold top plate 15, the processing personnel connect the water injection port 31 with the water pump, and the water pump will pump hot water into the water pipe 3. Because the water pipe 3, the water injection port 31, the water outlet 32 ​​and the hot water tank 33 are connected, the hot water will enter the hot water tank 33 through the water injection port 31, the water pipe 3 and the water outlet 32 ​​to heat the sand core raw material, and then flow out through the water pipe 3. The staff connects the material delivery pipe 44 to the external sand core raw material. During the heating and molding process of the sand core raw material in the fixed mold base 13, the material delivery pipe 44 is subjected to the pressure difference and the external sand core raw material will be pumped into the fixed cylinder 4, at this time, the movable plate 41 will be squeezed by the pressure difference to squeeze the sand core material inside the fixed cylinder 4, and fill the sand core material into the fixed mold base 13. After the filling is completed, the tube clamp assembly will limit the feed pipe 44 to prevent the feed pipe 44 from continuing to feed the sand core material into the fixed cylinder 4. When the movable plate 41 moves downward due to the pressure difference, the movable plate 41 will move downward synchronously with the movable rod 42 and the pressing plate 43. When the pressing plate 43 moves downward, the first fixed plate 5 and the first protrusion 51 at the bottom of the pressing plate 43 will also move downward until the first protrusion 51 is inserted into the second groove 53, blocking the channel for injecting the sand core material into the feed pipe 44. After the mold vertical plate 12 and the fixed mold base 13 are formed into a whole by the moving assembly, the processing personnel rotate the multiple rotating plates 63.The slot 64 is buckled on the fixing rod 6. At this time, the spring 61 and the spring plate 62 on the side wall of the fixing rod 6 will press against the inner wall of the slot 64, so that the fixing rod 6 will not fall out of the slot 64. When the mold vertical plate 12 and the fixed mold base 13 are close together, the second protrusion 7 on the side wall of the mold vertical plate 12 will be correspondingly inserted into the third groove 71 opened on the side wall of the fixed mold base 13. At the same time, when a pair of mold top plates 15 are attached together, the third protrusion 72 will be correspondingly inserted into the fourth groove 73.

[0050] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot core sand mold forming device, comprising a base (1), characterized in that: The top side wall of the base (1) is provided with a first groove (11), the first groove (11) is a pair and symmetrically arranged on the top of the base (1), the bottom inner side wall of the first groove (11) is slidably connected to a mold vertical plate (12), and a moving component is arranged in the middle of the side wall of the mold vertical plate (12), the top side wall of the base (1) is fixedly connected to a fixed mold base (13), the fixed mold base (13) and the mold vertical plate (12) are arranged correspondingly, and a heating component is arranged in the middle of the side wall of the fixed mold base (13), the top side wall of the mold vertical plate (12) is provided with a second groove (14), the middle of the inner side wall of the second groove (14) is slidably connected to a mold top plate (15), the top side wall of the mold top plate (15) is provided with an injection component, the middle of the side wall of the mold top plate (15) is fixedly connected to a push-pull plate (16), and the middle of the side wall of the mold vertical plate (12) is provided with a locking component.

2. A hot core sand mold forming equipment according to claim 1, characterized in that: The moving assembly comprises a first groove (2), the first groove (2) is a pair and is symmetrically opened on the top of the base (1), a bidirectional threaded rod (21) is rotatably connected to the middle of the inner side wall of the first groove (2), a control valve (22) is fixedly connected to the end of the bidirectional threaded rod (21), a movable block (23) is slidably connected to the middle of the side wall of the bidirectional threaded rod (21), the movable block (23) slides inside the first groove (2), a connecting rod (24) is fixedly connected to the middle of the side wall of the movable block (23), and the other end of the connecting rod (24) is fixedly connected to the mold vertical plate (12).

3. The hot core sand mold forming equipment according to claim 1, characterized in that: The heating assembly comprises a water pipe (3), the water pipe (3) being a pair and symmetrically arranged on both sides of the fixed mold base (13), the water inlet end of the water pipe (3) being fixedly connected to a water injection port (31), the water outlet end of the water pipe (3) being fixedly connected to a water outlet (32), a hot water tank (33) being arranged inside the fixed mold base (13), and the water pipe (3), the water injection port (31), the water outlet (32) and the hot water tank (33) being connected.

4. The hot core sand mold forming equipment according to claim 1, characterized in that: The injection assembly comprises a fixed cylinder (4), the fixed cylinder (4) is fixedly connected to the top of the mold top plate (15), a movable plate (41) is slidably fitted in the middle of the inner side wall of the fixed cylinder (4), the movable plate (41) and the fixed cylinder (4) are interference fit, a movable rod (42) is fixedly connected to the top side wall of the movable plate (41), a pressing plate (43) is fixedly connected to the top side wall of the movable rod (42), a material delivery pipe (44) is fixedly connected to the middle of the side wall of the fixed cylinder (4), the fixed cylinder (4) and the material delivery pipe (44) are connected, and a pipe clamp assembly is provided on the bottom side wall of the pressing plate (43).

5. A hot core sand mold forming device according to claim 4, characterized in that: The tube clamp assembly comprises a first fixing plate (5), the first fixing plate (5) is fixedly connected to the bottom of the pressing plate (43), a first protrusion (51) is fixedly connected to the bottom side wall of the first fixing plate (5), a second fixing plate (52) is fixedly connected to the top side wall of the mold top plate (15), a second groove (53) is formed on the top side wall of the second fixing plate (52), and the first protrusion (51) and the second groove (53) are arranged correspondingly.

6. The hot core sand mold forming equipment according to claim 1, characterized in that: The locking assembly comprises a fixed rod (6), the fixed rod (6) is a pair and is symmetrically arranged on both sides of the mold vertical plate (12), a plurality of springs (61) are fixedly connected to the middle of the side wall of the fixed rod (6), and a spring plate (62) is fixedly connected to the other end of the spring (61), a plurality of rotating plates (63) are rotatably connected to the middle of the side wall of the fixed mold base (13), the rotating plates (63) and the fixed rod (6) are correspondingly arranged, and a slot hole (64) is opened in the middle of the side wall of the rotating plate (63).

7. A hot core sand mold forming device according to claim 6, characterized in that: A second protrusion (7) is fixedly connected to the middle of the side wall of the mold vertical plate (12), a third groove (71) is opened in the middle of the side wall of the fixed mold base (13), the third groove (71) is a pair and is symmetrically arranged on both sides of the fixed mold base (13), the second protrusion (7) and the third groove (71) are arranged correspondingly, a third protrusion (72) is fixedly connected to the middle of the side wall of one mold top plate (15), a fourth groove (73) is opened in the middle of the side wall of the other mold top plate (15), the third protrusion (72) and the fourth groove (73) are arranged correspondingly.

8. The hot core sand mold forming equipment according to claim 7, characterized in that: A first sealing gasket (8) is fixedly connected to the middle of the side wall of the second protrusion (7), and a second sealing gasket (81) is fixedly connected to the middle of the side wall of the third protrusion (72). Both the first sealing gasket (8) and the second sealing gasket (81) are made of elastic material.

9. The hot core sand mold forming equipment according to claim 1, characterized in that: An elastic pad (9) is fixedly connected to the middle of the side wall of the push-pull plate (16), and the elastic pad (9) is made of elastic material.

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