A novel automated sand casting molding system

Abstract

This invention relates to the field of sand casting technology, specifically a novel automated sand casting molding system, comprising: a first support component, including a support base and a first rotating support component; a molding component, including a second support component and a molding die component; and a die casting mold component, including a fourth support component, an outer mold component, an inner mold component, and a sand filling component. The fourth support component is mounted on the first rotating support component, and the outer mold component and the inner mold component are both mounted on the fourth support component. The fourth support component drives the outer mold component and the inner mold component to be respectively fastened onto the molding die component. The sand filling component is located on the support base and is used to automatically fill molding sand into the outer mold component and the inner mold component. This invention has a high degree of automation, enabling efficient and uniform cooling of the inner and outer surfaces of the shell casting, significantly reducing the solidification time and casting defects, and significantly improving the production efficiency, quality stability, overall quality, and production benefits of the casting.

Description

Technical Field

[0001] This invention relates to the field of sand casting molds, and more particularly to a novel automated sand casting mold forming system. Background Technology

[0002] Sand casting, as a versatile forming process, is widely used in the production of engine blocks, machine tool beds, valve bodies, and various complex structural housing castings. Its basic process involves using a sand mold to form the external contour of the casting and a core to form the internal cavity. Molten metal is then poured into the cavity, and after cooling and solidification, a blank is obtained. Shell castings typically have relatively closed or deep cavity structures, and both their inner and outer surfaces must be formed using sand molds or cores. This makes the control of the solidification and cooling process particularly critical, directly affecting the internal quality, dimensional accuracy, mechanical properties, and production efficiency of the casting.

[0003] In traditional sand casting production, especially when it comes to the manufacture of shell castings, the following technical limitations are commonly present: 1. Low level of automation and limited production efficiency: Traditional processes such as sand mold preparation, mold assembly, pouring, cooling, sand removal, and cleaning rely heavily on manual or semi-mechanized operations, resulting in slow production cycles, high labor intensity, and difficulty in ensuring product consistency. For mass-produced shell castings, this model has become a major bottleneck restricting capacity expansion and cost control.

[0004] 2. Inadequate cooling process control leads to unstable casting quality: During the solidification process of shell castings, there are significant differences in heat dissipation conditions between the inner side (the surface in contact with the core) and the outer side (the surface in contact with the sand mold). The outer side typically dissipates heat slowly only through the sand mold, while the inner side, due to the heat storage of the core and the limited heat dissipation path, often cools much slower than the outer side. This uneven cooling can lead to a series of quality problems: Casting defects: Slow cooling on the inside can easily lead to defects such as shrinkage cavities and porosity, especially in areas with uneven wall thickness or hot spots.

[0005] Residual stress and deformation: Uneven cooling rates inside and outside the casting will generate large thermal stress inside the casting, causing warping and deformation, affecting dimensional accuracy and assembly performance.

[0006] Uneven microstructure and properties: Differences in cooling rate can affect the solidification structure and grain size of the metal, resulting in inconsistent mechanical properties in different parts of the casting and reducing overall reliability.

[0007] Extended production cycle: To ensure that the castings solidify fully and reduce the risk of defects, it is often necessary to extend the cooling time in the mold, which occupies a lot of production space and equipment resources and slows down the overall production pace.

[0008] 3. Shortcomings of Existing Cooling Enhancement Methods: To address the cooling problem, existing technologies have attempted several methods, such as increasing the permeability of the sand mold / core, placing chills in the sand mold, or using forced air cooling or water mist cooling after the casting is demolded. However, these methods have significant drawbacks: the use of chills increases costs and process complexity, and is difficult to arrange in complex cavities; post-demolding cooling is a reactive process and cannot effectively improve the temperature field distribution during solidification, thus having limited effectiveness in preventing defects generated during solidification; and traditional external fan cooling mainly acts on the outer surface of the casting, with weak cooling effect on the inner surface of deep cavities, making it difficult to achieve balanced cooling of the inner and outer surfaces.

[0009] Therefore, existing sand casting technology, especially for the production of shell-type castings, has significant shortcomings in terms of automated continuous production and precise, efficient cooling control during the casting solidification process. There is an urgent need to develop a highly integrated automated sand casting system to improve production efficiency and stability; more importantly, it is necessary to integrate a novel cooling technology that can actively and evenly accelerate the cooling rate of the inner and outer surfaces of the casting to optimize the solidification process, shorten cooling time, reduce casting defects, and improve the overall quality and production efficiency of the casting. This invention is proposed based on this technological background. Summary of the Invention

[0010] To address the technical problems existing in the prior art, this invention provides a novel automated sand casting system. The technical solution is as follows: A novel automated sand casting system includes: A first support member is disposed on the ground. The first support member includes a support base and a first rotating support member. The support base is installed on the ground, and the first rotating support member provides support and rotational force on the support base. A shaping component is disposed on the first support component. The shaping component includes a second support component and a shaping mold component. The second support component is on the first rotating support component and provides vibration and lateral sliding support for the connected shaping mold component. A die-casting mold component is mounted on the first support component. The die-casting mold component includes a fourth support component, an outer mold component, an inner mold component, and a sand-filling component. The fourth support component is mounted on the first rotating support component. The outer mold component and the inner mold component are both mounted on the fourth support component. The fourth support component drives the outer mold component and the inner mold component to be respectively fastened onto the molding mold component. The sand-filling component is mounted on the support base and is used to automatically fill molding sand into the outer mold component and the inner mold component.

[0011] Preferably, the second support member includes a first slide groove, a vibrating member, and a second power member. The first slide groove is disposed on the support plate of the first rotating support member, the vibrating member is slidably embedded in the first slide groove, and the second power member is connected to the vibrating member on the first slide groove to control the vibrating member to slide or remain stationary in the first slide groove.

[0012] Preferably, the vibrating component includes a second sliding groove, a first slider, a reciprocating screw, and a third power component. The second sliding groove is slidably fitted into the first sliding groove and connected to the second power component. The reciprocating screw is rotatably disposed within the second sliding groove. The first slider is slidably fitted into the second sliding groove and fitted onto the reciprocating screw via a threaded hole. The third power component is rotatably connected to one end of the reciprocating screw via the second sliding groove.

[0013] Preferably, the molding die includes a fixed plate, a sand mold, and a core mold. One end of the fixed plate is horizontally fixed on the first slider and moves with it. The sand mold is disposed on the top surface of the fixed plate, and the core mold is disposed on the bottom surface of the fixed plate.

[0014] Preferably, the fourth support member includes a transmission member and a fourth power member. The transmission member is disposed in a groove on the support plate and is used to drive the connected outer mold member to move towards the sand mold and drive the connected inner cavity mold member to move towards the core mold. The fourth power member provides power to the connected transmission member on the support plate.

[0015] Preferably, the external mold component includes a fifth support member, a first sand box, a first sliding locking member, a shell cooling member, and a first extrusion member. The fifth support member is disposed on the transmission member to provide support and lateral sliding for the connected first sand box. The first sliding locking member is disposed on the fifth support member to laterally lock or slide the first sand box. The shell cooling member is disposed on the first sand box. The first extrusion member is disposed on the support base to compress and compact the molding sand in the first sand box.

[0016] Preferably, the outer shell cooling component includes a first buffer, a first buffer locking component, a first bracket, and a first liquid cooling component. The first buffer is disposed on the first sand box to provide vertical sliding buffer. The first buffer locking component is on the first buffer to vertically lock or release the first buffer on the first sand box. The first bracket is on the first buffer to provide support for the connected first liquid cooling component. The first liquid cooling component includes a first annular cooling pipe disposed on the first bracket, and the inner circle contour of the first annular cooling pipe is larger than the contour of the sand mold.

[0017] Preferably, the inner cavity mold component includes a seventh support member, a second sand box, a second sliding locking member, an inner cavity cooling member, and a second extrusion member. The seventh support member provides support and lateral sliding for the connected second sand box on the transmission member. The second sliding locking member locks or slides the second sand box laterally on the seventh support member, so that the second sand box is vertically aligned with the first sand box. The inner cavity cooling member is disposed on the second sand box, and the second extrusion member is disposed on the second sand box to compress and compact the molding sand in the second sand box.

[0018] Preferably, the inner cavity cooling component includes a second buffer, a second buffer locking component, a second bracket, and a second liquid cooling component. The second buffer is disposed on the second sand box to provide vertical sliding buffer. The second buffer locking component is on the second buffer to vertically lock or release the second buffer on the second sand box. The second bracket is on the second buffer to provide support for the connected second liquid cooling component. The second liquid cooling component includes a second annular cooling pipe disposed on the second bracket, and the outer contour of the second annular cooling pipe is smaller than the inner cavity contour of the core mold.

[0019] Preferably, the sand feeding device includes a first sand conveying device, a second sand conveying device, a first filling device, and a second filling device. The first sand conveying device and the second sand conveying device are both disposed on the support base and convey the molding sand to the first sand box and the second sand box, respectively. The first filling device and the second filling device are both disposed on the support base, and the first filling device is connected to the first sand conveying device to move the other end of the sand conveying hose of the first sand conveying device to the first sand box to fill the molding sand. The second filling device is connected to the second sand conveying device to move the other end of the sand conveying hose of the second sand conveying device to the second sand box to fill the molding sand.

[0020] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: (1) The novel automated sand casting molding system of the present invention has a high degree of automation and can efficiently and evenly cool the inner and outer surfaces of the shell casting, significantly reducing the solidification time and casting defects of the casting, and significantly improving the production efficiency, quality stability, overall quality and production benefits of the casting. (2) The novel automated sand casting molding system of the present invention is equipped with an outer mold component and an inner cavity mold component. The outer mold component and the inner cavity mold component can not only automatically mold the outer shape and inner cavity of the casting, but also actively and evenly accelerate the cooling speed of the inner and outer surfaces of the casting through the outer shell cooling component and the inner cavity cooling component, which significantly reduces the solidification time and casting defects of the casting, and significantly improves the production efficiency, quality stability, overall quality and production benefits of the casting. Attached Figure Description

[0021] Figure 1 This is the front view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 For the present invention Figure 3 A magnified view of part D; Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below; Figure 6 For the present invention Figure 5 A magnified view of part E in the image; Figure 7 This is a schematic diagram of the left-side three-dimensional structure of the present invention; Figure 8 For the present invention Figure 7 A magnified view of part of F; Figure 9 This is the left-side front view of the present invention; Figure 10 For the present invention Figure 9 A magnified view of a portion of G; Figure 11 For the present invention Figure 1 Schematic diagram of the three-dimensional structure in the AA direction section; Figure 12 For the present invention Figure 11 A magnified view of a portion of the L-shape; Figure 13 For the present invention Figure 2 Front view of the cross section in the middle BB direction; Figure 14 For the present invention Figure 13 A magnified view of part of H; Figure 15 For the present invention Figure 2 Schematic diagram of the three-dimensional structure in the BB direction; Figure 16 For the present invention Figure 15 A magnified view of part I; Figure 17 For the present invention Figure 16 A magnified view of a portion of J; Figure 18 For the present invention Figure 2 Schematic diagram of the three-dimensional structure in the CC direction; Figure 19 For the present invention Figure 18 A magnified view of a portion of K.

[0022] 1-Support base, 2-Support plate, 3-First power component, 4-First slide groove, 5-Second motor, 6-First screw, 7-First nut, 8-Transmission block, 9-Second slide groove, 10-First slider, 11-Reciprocating screw, 12-Mounting base, 13-Third motor, 14-Second worm gear, 15-Second worm wheel, 16-Fixed plate, 17-Sand mold, 18-Core mold, 19-Second screw, 20-Second slider, 21-Third slider, 22-Fourth motor, 25-First sand box, 26-Second transmission rod, 27-Fourth slide groove, 28-Fourth slider, 29-First linear actuator, 30-First bracket, 31-Fifth slide groove, 32-Fifth slider, 33-Spring, 34-Support rod, 35-Sealing plate, 36-First rack, 37-Second rack, 3 8-Second linear actuator, 39-First annular cooling pipe, 40-First water inlet pipe, 41-First water outlet pipe, 42-Extrusion seat, 43-Third linear actuator, 44-First compaction head, 45-Gating pipe, 46-Expansion cone, 47-Seventh support, 48-Second sand box, 49-Second sliding locking element, 50-Second buffer element, 52-Second bracket, 53-Second annular cooling pipe, 54-Fourth linear actuator, 55-Second compaction head, 56-Second sand conveying element, 57-Second filling element, 58-Sand conveying pipe, 59-Helical blade, 60-Fifth motor, 61-Sand conveying hose, 62-Sand storage tank, 63-Sixth chute, 64-Third screw, 65-Sixth slider, 66-Sixth motor, 67-Third transmission rod, 68-Fixing hoop, 69-Sand filling interface. Detailed Implementation

[0023] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0024] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0025] In the embodiments of this invention, the terms "image" and "picture" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning. Similarly, the terms "of," "corresponding (relevant)," and "corresponding" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning.

[0026] In this embodiment of the invention, sometimes a subscript such as W1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0027] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0028] according to Figures 1-19 As shown, a novel automated sand casting molding system includes a first support component, a molding component, and a die-casting mold component, both of which are mounted on the first support component. The first support component includes a support base 1 and a first rotating support component. The bottom end of the support base 1 is stably mounted on the ground to provide support, and the first rotating support component provides support and rotational force for the molding component and the die-casting mold component on the support base 1.

[0029] The first rotating support includes a support disk 2 and a first power component 3. The support disk 2 is circumferentially fitted into a circular groove on one side of the support base 1, and the plane of the support disk 2 is perpendicular to the ground. The first power component 3 drives the connected support disk 2 to rotate circumferentially on the support base 1. Further, the support disk 2 is in the shape of a thick circular plate.

[0030] The first power component 3 includes a first transmission rod, a first motor, a first worm gear, and a first worm wheel. One end of the first transmission rod rotatably passes through the support base 1 and is fixedly connected to one end face of the support disk 2, with the axis of the first transmission rod coinciding with the axis of the support disk 2. The first motor is fixedly mounted on the other side of the support base 1, the first worm gear is fixedly mounted on the shaft of the first motor, and the first worm wheel is fixedly mounted on the other end of the first transmission rod, meshing with the first worm gear. When the first motor drives the first transmission rod to rotate via the first worm gear and the first worm wheel, the first transmission rod drives the support disk 2 to rotate within the circular groove, facilitating the removal of the cast and cooled metal part from the die-casting mold.

[0031] The shaping component includes a second support and a shaping mold component. The second support is disposed on the first rotating support and provides vibration and lateral sliding support for the connected shaping mold component. The shaping mold component is disposed on the second support. The second support includes a third support and a vibrating element. The third support is disposed on the first rotating support and the vibrating element is slidably disposed on the third support. The vibrating element is driven to slide radially along the first rotating support on the third support, and the vibrating element provides vibration for the connected shaping mold component.

[0032] The third support member includes a first sliding groove 4 and a second power member. The bottom surface of the first sliding groove 4 is fixedly disposed on the other end face of the support plate 2. The second power member drives the vibrating member to reciprocate within the first sliding groove 4. Furthermore, the axis of the first sliding groove 4 is parallel to the radial line of the support plate 2.

[0033] The second power component includes a second motor 5, a first screw 6, a first nut 7, and a transmission block 8. The second motor 5 is fixedly mounted on the support plate 2. One end of the first screw 6 is connected to the shaft of the second motor 5, and the other end of the first screw 6 is rotatably mounted on a first rotating seat on one end wall of the first slide groove 4, such that the axis of the first screw 6 is parallel to the axis of the first slide groove 4. The first nut 7 is fitted onto the first screw 6. One end of the transmission block 8 is fixedly connected to the first nut 7, and the other end of the transmission block 8 passes through a first elongated through hole in one wall of the first slide groove 4 and connects to the vibrating component. When the second motor 5 drives the first screw 6 to rotate, it will drive the first nut 7 and the transmission block 8 to slide axially along the first slide groove 4, thereby causing the transmission block 8 to drive the vibrating component in the first slide groove 4 to slide axially. The first slide groove 4 is C-shaped.

[0034] The vibrating component includes a second sliding groove 9, a first slider 10, a reciprocating screw 11, and a third power component. The second sliding groove 9 is slidably fitted into the first sliding groove 4, and is fixedly connected to the other end of the transmission block 8. The reciprocating screw 11 is rotatably disposed within the second sliding groove 9, and its two ends are rotatably disposed on second rotating seats at both ends of the second sliding groove 9, with the axis of the reciprocating screw 11 coinciding with the axis of the second sliding groove 9. The first slider 10 is axially slidably fitted into the second sliding groove 9, and its threaded hole is fitted onto the reciprocating screw 11. The third power component passes through the opening of the first sliding groove 4 and is fixedly disposed on the second sliding groove 9, and is rotatably connected to one end of the reciprocating screw 11. When the third power component drives the reciprocating screw 11 to rotate circumferentially, the reciprocating screw 11 will drive the first slider 10 to slide rapidly back and forth axially within the second sliding groove 9, thereby generating a lateral vibration force. The second slide 9 is in the shape of a C-shaped groove frame.

[0035] The third power component includes a mounting base 12, a third motor 13, a second worm gear 14, and a second worm wheel 15. One end of the mounting base 12 passes through the opening of the first sliding groove 4 and is fixedly mounted on the second sliding groove 9. The third motor 13 is fixedly mounted on the mounting base 12, and the shaft of the third motor 13 rotates through the mounting base 12. The second worm gear 14 is fixedly mounted on the shaft of the third motor 13. The second worm wheel 15 is fixedly fitted onto one end of the reciprocating screw 11, and the second worm wheel 15 meshes with the second worm gear 14. The third motor 13 drives the reciprocating screw 11 to rotate circumferentially through the second worm gear 14 and the second worm wheel 15.

[0036] The molding die includes a fixed plate 16, a sand mold 17, and a core mold 18. One end of the fixed plate 16 is horizontally fixed to the first slider 10 and moves with it. The sand mold 17 is fixedly mounted on the top surface of the fixed plate 16, and the core mold 18 is fixedly mounted on the bottom surface of the fixed plate 16. The sand mold 17 and the core mold 18 cooperate to form the mold cavity of a vehicle housing, allowing molten metal to be cast into a housing-shaped metal part. The sand mold 17 is used to shape the outer shell of the cast metal part, and the core mold 18 is used to shape the inner cavity of the cast metal part.

[0037] The die-casting mold includes a fourth support, an outer mold, an inner mold, and a sand-filling component. The fourth support is mounted on the first rotating support. Both the outer mold and the inner mold are mounted on the fourth support. The fourth support drives the outer mold and the inner mold to be respectively fastened onto the sand mold 17 and the core mold 18. The sand-filling component is mounted on the support base 1 and is used to automatically fill the outer mold and the inner mold with molding sand.

[0038] The fourth support member includes a transmission member and a fourth power member. The transmission member is disposed in a groove on the first rotating support member and is used to drive the connected outer mold member to move towards the sand mold 17 and drive the connected inner mold member to move towards the core mold 18. The axis of the transmission member is perpendicular to the axis of the first groove 4. The fourth power member is disposed on the first rotating support member and provides power to the connected transmission member.

[0039] The transmission components include a second screw 19, a second slider 20, and a third slider 21. The second screw 19 is rotatably disposed within a third groove on the other end face of the support disk 2. The axis of the third groove coincides with the radial line of the support disk 2, and both ends of the second screw 19 are rotatably disposed on third rotating seats at both ends of the third groove. The second slider 20 is fitted into the third groove, and the threaded hole on the second slider 20 fits onto the outside of the second screw 19. The third slider 21 is fitted into the third groove, and the threaded hole on the third slider 21 fits onto the outside of the second screw 19. The second slider 20 and the third slider 21 are symmetrically distributed above and below the first groove 4, respectively.

[0040] The fourth power component includes a fourth motor 22, a third worm gear, and a third worm wheel. The fourth motor 22 is fixedly mounted on the other end face of the support disk 2. The third worm gear is mounted on the rotating shaft of the fourth motor 22. The third worm wheel is fixedly mounted on the second screw 19 and meshes with the third worm gear. The fourth motor 22 drives the second screw 19 to rotate via the third worm gear and the third worm wheel. The rotating second screw 19 drives the outer mold component and the inner cavity mold component to move towards the sand mold 17 and the core mold 18 via the second slider 20 and the third slider 21, respectively.

[0041] The external mold component includes a fifth support, a first sand box 25, a first sliding locking component, a shell cooling component, and a first extrusion component. The fifth support is mounted on the transmission component to provide support and lateral sliding for the connected first sand box 25. The first sand box 25 is mounted on the fifth support. The first sliding locking component on the fifth support locks the first sand box 25 laterally as needed. The shell cooling component is mounted on the first sand box 25. The first extrusion component is mounted on the support base 1 to compress and compact the molding sand inside the first sand box 25.

[0042] The fifth support member includes a second transmission rod 26, a fourth sliding groove 27, and a fourth slider 28. One end of the second transmission rod 26 is horizontally fixed on the second slider 20 and moves with it. The fourth slider 28 is horizontally fixed on the other end of the second transmission rod 26 to provide support. The fourth sliding groove 27 is slidably embedded in the fourth slider 28, so that the fourth sliding groove 27 can slide back and forth axially on the fourth slider 28.

[0043] The first sand box 25 is horizontally fixed on one side wall and moves along with the fourth slide groove 27. The first sand box 25 moves downward with the second slider 20 and is secured to the outside of the sand mold 17. Simultaneously, the bottom end of the first sand box 25 is connected to the top surface of the fixing plate 16. The first sand box 25 moves with the rapid horizontal reciprocating movement of the fixing plate 16, thereby generating a vibration force on the molding sand inside the first sand box 25, making the molding sand more evenly and fully distributed. The first sand box 25 is generally rectangular cylindrical, and both ends of the first sand box 25 are open.

[0044] The first sliding locking component includes a first linear actuator 29 and a locking shaft. The first linear actuator 29 is fixedly mounted on the side wall of the fourth slide groove 27. One end of the locking shaft is connected to the first linear actuator 29, and the other end of the locking shaft passes through the through hole on the side wall of the fourth slide groove 27 and can be inserted into the locking hole on the fourth slider 28, thereby axially locking the fourth slide groove 27 onto the fourth slider 28 so that the first sand box 25 and the sand mold 17 are vertically aligned.

[0045] The outer shell cooling component includes a sixth support component and a first liquid cooling component. The sixth support component is disposed on the first sand box 25, and the first liquid cooling component is disposed on the sixth support component to cool (heat treat) the outer surface of the cast metal part after the molten metal is poured.

[0046] The sixth support includes a first buffer, a first buffer locking member, and a first bracket 30. The first buffer is disposed on the first sand box 25 to provide buffering. The first buffer locking member is disposed on the first buffer and locks the first buffer after the molding sand is fully compacted. The first bracket 30 is disposed on the first buffer to provide support for the connected first liquid cooling component.

[0047] The first buffer component includes a fifth groove 31, a fifth slider 32, a spring 33, a support rod 34, and a sealing plate 35. The opening of the fifth groove 31 is fixedly disposed on one side wall of the first sand box 25, and the longitudinal line of the fifth groove 31 is parallel to the axis of the first sand box 25. The fifth slider 32 is axially slidably fitted into the opening of the fifth groove 31, and the fifth slider 32 slides vertically against the side of the first sand box 25 within the fifth groove 31. One end of the spring 33 is connected to one end face of the fifth slider 32, and the other end of the spring 33 is connected to one end face of the fifth groove 31. One end of another spring 33 is connected to the other end face of the fifth slider 32, and the other end of another spring 33 is connected to the other end face of the fifth groove 31. One end of the support rod 34 passes through the second elongated through hole on one side wall of the first sand box 25 and is fixedly connected to the fifth slider 32. The sealing plate 35 has a larger outer dimension than the second elongated through hole. The sealing plate 35 is fixedly fitted onto the support rod 34 through its through hole, and one side of the sealing plate 35 slides against the inner side wall of one side wall of the first sand box 25. Furthermore, the distance between the sealing plate 35 and the fifth slider 32 is not less than the wall thickness of the first sand box 25. When the first extruder extrudes the molding sand into the first sand box 25, it will press the first liquid cooling component downward. The downward movement of the first liquid cooling component will drive the support rod 34 downward. The downward movement of the support rod 34 will drive the fifth slider 32 to compress the other spring 33 downward, thereby driving the sealing plate 35 downward. The downward movement of the sealing plate 35 can always block the second elongated through hole from the inside, preventing the molding sand from leaking out of the second elongated through hole. Two sets of the first buffer are provided, and the two sets of the first buffer are symmetrically distributed on one side wall of the first sand box 25.

[0048] The first buffer locking member includes a first rack 36, a second rack 37, and a second linear actuator 38. The first rack 36 is fixedly mounted on the fifth slider 32 within the fifth groove 31. The back thickness of the second rack 37 is greater than the bottom thickness of the fifth groove 31. The second rack 37 is slidably fitted into a sliding through-hole on the bottom surface of the fifth groove 31. The second linear actuator 38 is fixedly mounted on the outer side of the bottom surface of the fifth groove 31 and is connected to the second rack 37. When the second linear actuator 38 extends, it pushes the second rack 37 forward within the sliding through-hole (the second rack 37 is always located within the sliding through-hole) until it engages with the first rack 36, thereby axially locking the fifth slider 32 within the fifth groove 31. It should be noted that after the first extruder fully compacts the molding sand in the first sand box 25, the first buffer locking member then axially locks the fifth slider 32. When sand removal is required, the first buffer locking component unlocks the fifth slider 32, improving sand removal efficiency. Two sets of the first buffer locking component are provided, with each set corresponding to one of the two sets of the first buffer component.

[0049] The first bracket 30 is generally in the shape of a gate frame. One end of the first bracket 30 is fixedly connected to the other end of the support rod 34 of one set of the first buffer components, and the other end of the first bracket 30 is fixedly connected to the other end of the support rod 34 of another set of the first buffer components, so as to provide support for the first liquid cooling component.

[0050] The first liquid cooling component includes a first annular cooling pipe 39, a first water inlet pipe 40, and a first water outlet pipe 41. The first annular cooling pipe 39 is mounted on the first support 30, and the inner contour of the first annular cooling pipe 39 is larger than the contour of the sand mold 17, so as to rapidly cool the outer surface of the cast metal part around the outer periphery of the sand mold 17 (after the first annular cooling pipe 39 is fitted onto the sand mold 17, a predetermined distance is left between the first annular cooling pipe 39 and the sand mold 17, so that a layer of molding sand is filled and compacted between the first annular cooling pipe 39 and the sand mold 17). One end of the first water inlet pipe 40 is connected to one side of the first annular cooling pipe 39, and the other end of the first water inlet pipe 40 passes through the first sand box 25 and is connected to the liquid pump. One end of the first water outlet pipe 41 is connected to the other side of the first annular cooling pipe 39, and the other end of the first water outlet pipe 41 passes through the first sand box 25 and discharges coolant outward. Furthermore, the other end of the first water inlet pipe 40 is connected to the infusion pump via a flexible hose. The infusion pump delivers coolant through the first water inlet pipe 40 into the first annular cooling pipe 39, rapidly cooling the outer surface of the cast metal part housing (by controlling the cooling rate, the heat treatment effect on the cast metal part is achieved, improving the structural strength and wear resistance of the housing). Alternatively, both the first water inlet pipe 40 and the first water outlet pipe 41 are flexible hoses, and both have high radial rigidity to meet the vertical movement requirements of the first annular cooling pipe 39.

[0051] Alternatively, multiple first annular cooling pipes 39 are provided, and the multiple first annular cooling pipes 39 are distributed longitudinally along the sand mold 17 at intervals. Moreover, multiple first annular cooling pipes 39 can be provided on the top of the first support 30 according to the top surface shape of the cast metal part.

[0052] The first extrusion component includes an extrusion seat 42, a third linear actuator 43, a first compaction head 44, and a gating pipe 45. One end of the extrusion seat 42 is horizontally fixed on the support base 1. The third linear actuator 43 is disposed on the other end of the extrusion seat 42, and the axis of the third linear actuator 43 can coincide with the axis of the first sand box 25. The first compaction head 44 is horizontally fixed on the third linear actuator 43 to extrude and compact the molding sand in the first sand box 25 downwards. The top end of the gating pipe 45 is disposed on the bottom surface of the first compaction head 44, and is used to form a gating channel (a channel for pouring molten metal from the outside into the cavity) in the compacted molding sand. Furthermore, an expanding cone 46 is fixedly fitted on the outer wall of the top end of the gating pipe 45. The expanding cone 46 is generally frustum-shaped. The expanding cone 46 is used to press and form an expanded gating opening on the surface of the compacted molding sand. The expanded gating opening is connected to the top end of the gating, which facilitates the injection of molten metal into the gating.

[0053] The inner cavity mold component includes a seventh support member 47, a second sand box 48, a second sliding locking member 49, an inner cavity cooling member, and a second extrusion member. The seventh support member 47 is disposed on the transmission member to provide support and lateral sliding for the connected second sand box 48. The second sand box 48 is disposed on the seventh support member 47. The second sliding locking member 49 timely locks the second sand box 48 laterally on the seventh support member 47, so that the second sand box 48 is vertically aligned with the first sand box 25. The inner cavity cooling member is disposed on the second sand box 48. The second extrusion member is disposed on the second sand box 48 to compress and compact the molding sand inside the second sand box 48.

[0054] The seventh support member 47 has the same structure as the fifth support member. The seventh support member 47 is disposed on the third slider 21, and the connection method between the seventh support member 47 and the third slider 21 is the same as the connection method between the fifth support member and the second slider 20. At the same time, the seventh support member 47 and the fifth support member are parallel and symmetrical.

[0055] The top sidewall of the second sand box 48 is fixedly mounted on the fourth slider 28 of the seventh support member 47, and the second sand box 48 can be vertically aligned with the first sand box 25. The length of the second sand box 48 is greater than the length of the first sand box 25, and the inner diameter of the second sand box 48 is smaller than the outer diameter of the core mold 18, so that the top port of the second sand box 48 can fit against the bottom surface of the core mold 18, allowing the inner cavity cooling component to be inserted into the inner cavity of the core mold 18, and causing the second sand box 48 to vibrate with the horizontal reciprocating vibration of the core mold 18. The distance from the top surface of the second sand box 48 to the bottom surface of the core mold 18 is the same as the distance from the bottom surface of the first sand box 25 to the top surface of the fixing plate 16.

[0056] Alternatively, the first sand box 25 has a first annular block on its bottom opening. When the bottom surface of the first sand box 25 is attached to the top surface of the fixing plate 16, the first annular block can be inserted into the first annular groove on the top surface of the fixing plate 16. The second sand box 48 has a second annular groove on its top opening. When the top surface of the second sand box 48 is attached to the bottom surface of the core mold 18, the second annular groove can be fitted onto the second annular block on the bottom surface of the core mold 18. The second annular groove and the first annular block can be inserted into each other.

[0057] The second sliding locking member 49 has the same structure as the first sliding locking member, and the connection method between the second sliding locking member 49 and the seventh support member 47 is the same as the connection method between the first sliding locking member and the fifth support member.

[0058] The internal cavity cooling component includes an eighth support component and a second liquid cooling component. The eighth support component is disposed on the second sand box 48, and the second liquid cooling component is disposed on the eighth support component to cool (heat treat) the inner wall of the shell of the cast metal part after the molten metal is poured.

[0059] The eighth support includes a second buffer 50, a second buffer locking member, and a second bracket 52. The second buffer 50 has the same structure as the first buffer and is disposed on the second sand box 48 to provide support and cushioning. The connection method between the second buffer 50 and the second sand box 48 is the same as the connection method between the first buffer and the first sand box 25. The second buffer locking member has the same structure as the first buffer locking member and is disposed on the second buffer 50. The connection method between the second buffer locking member and the second buffer 50 is the same as the connection method between the first buffer locking member and the first buffer. When the molding sand in the inner cavity of the core mold 18 is fully compacted, the second buffer 50 is locked. The second bracket 52 is smaller than the first bracket 30. The second bracket 52 is disposed on the second buffer 50 to provide support for the connected second liquid cooling component. The connection method between the second bracket 52 and the second buffer 50 is the same as the connection method between the first bracket 30 and the first buffer.

[0060] The second liquid cooling component includes a second annular cooling pipe 53, a second water inlet pipe, and a second water outlet pipe. The second annular cooling pipe 53 is mounted on the second support 52, and the outer contour of the second annular cooling pipe 53 is smaller than the inner contour of the core mold 18, so as to be embedded in the compacted molding sand to rapidly cool the inner wall of the casting metal part's shell in a circumferential direction. (After the second annular cooling pipe 53 is inserted into the inner cavity of the core mold 18, a predetermined distance is left between it and the inner cavity side wall and top wall of the core mold 18, so that a layer of compacted molding sand is filled between the second annular cooling pipe 53 and the inner cavity side wall and top wall of the core mold 18). One end of the second water inlet pipe is connected to one side of the second annular cooling pipe 53, and the other end of the second water inlet pipe passes through the second sand box 48 and is connected to the liquid pump (the flow rate into the first water inlet pipe 40 and the second water inlet pipe is controlled by a flow valve). One end of the second water outlet pipe is connected to the other side of the second annular cooling pipe 53, and the other end of the second water outlet pipe passes through the first sand box 25 and discharges outward. Furthermore, the other end of the second water inlet pipe is connected to the infusion pump using a flexible hose. The infusion pump delivers coolant through the second water inlet pipe into the second annular cooling pipe 53, rapidly cooling the inner side of the cast metal part's housing (controlling the cooling rate achieves the heat treatment effect on the cast metal part, improving the housing's structural performance, strength, and wear resistance). Alternatively, both the second water inlet pipe and the second water outlet pipe are flexible hoses, and their radial rigidity is relatively high to meet the vertical movement requirements of the second annular cooling pipe 53. The coolant flow rate in the second liquid-cooled component and the first liquid-cooled component can be adaptively adjusted according to the heat dissipation performance of the inner and outer sides of the housing to achieve balanced cooling.

[0061] Alternatively, multiple second annular cooling pipes 53 are provided, and the multiple second annular cooling pipes 53 are distributed longitudinally along the inner cavity of the core mold 18. Moreover, multiple second annular cooling pipes 53 can be provided on the top of the second bracket 52 according to the shape of the inner wall of the top surface of the cast metal part.

[0062] The second extrusion member includes a fourth linear actuator 54 and a second compaction head 55. The fourth linear actuator 54 is disposed on the bottom surface of the second sand box 48, and the extended end of the fourth linear actuator 54 slides axially into the second sand box 48. The second compaction head 55 is horizontally fixedly disposed on the extended end of the fourth linear actuator 54 within the second sand box 48.

[0063] The sand feeding device includes a sand conveying device and a filling device, both of which are mounted on the support base 1. The filling device guides the connected sand conveying device to a predetermined position, adding sand to the first sand box 25 and the second sand box 48, respectively. The sand conveying device includes a first sand conveying device and a second sand conveying device 56, both mounted on the support base 1, conveying the molding sand to the first sand box 25 and the second sand box 48, respectively. The first sand conveying device includes a sand conveying pipe 58, a spiral blade 59, a fifth motor 60, and a sand conveying hose 61. One end of the sand conveying pipe 58 is horizontally fixed on the top surface of the support base 1, and the upper side wall of one end of the sand conveying pipe 58 communicates with the bottom of the sand storage tank 62 on the top surface of the support base 1. The sand storage tank 62 is used to store the molding sand. The spiral blade 59 is rotatably embedded inside the sand conveying pipe 58, and a drive shaft located at the axis of the spiral blade 59 is rotatably mounted on both ends of the sand conveying pipe 58. The fifth motor 60 is fixedly mounted on the support base 1, and the rotating shaft of the fifth motor 60 is connected to one end of the drive shaft. One end of the sand conveying hose 61 is connected through to the lower wall of the other end of the sand conveying pipe 58. When the fifth motor 60 drives the spiral blade 59 to rotate, the molding sand in the sand storage tank 62 is transported from one end of the sand conveying pipe 58 to the sand conveying hose 61 at the other end, and finally added to the first sand box 25 through the other end of the sand conveying hose 61.

[0064] The second sand conveying component 56 has the same structure as the first sand conveying component, and the connection method between the second sand conveying component 56 and the sand conveying trough on the support base 1 is the same as the connection method between the first sand conveying component and the sand conveying trough. Furthermore, the length of the sand conveying hose 61 of the second sand conveying component 56 is greater than the length of the sand conveying hose 61 of the first sand conveying component, so as to facilitate the second sand conveying component 56 filling the second sand box 48 with the molding sand.

[0065] The filling components include a first filling component and a second filling component 57. Both the first filling component and the second filling component 57 are disposed on the support base 1. The first filling component is connected to the first sand conveying component to move the other end of the sand conveying hose 61 of the first sand conveying component to the first sand box 25 to fill the molding sand. The second filling component 57 is connected to the second sand conveying component 56 to move the other end of the sand conveying hose 61 of the second sand conveying component 56 to the second sand box 48 to fill the molding sand.

[0066] The first filling component includes a sixth sliding groove 63, a third screw 64, a sixth slider 65, a sixth motor 66, a third transmission rod 67, and a fixing hoop 68. The sixth sliding groove 63 is fixedly disposed on one side of the support base 1. The third screw 64 is rotatably disposed in the sixth sliding groove 63, and both ends of the third screw 64 are rotatably disposed on the fourth rotating seats at both ends of the sixth sliding groove 63. The sixth slider 65 is slidably embedded in the sixth sliding groove 63, and the threaded hole on the sixth slider 65 is fitted onto the third screw 64. The sixth motor 66 is fixedly disposed on the support base 1, and the rotating shaft of the sixth motor 66 is connected to one end of the third screw 64. One end of the third transmission rod 67 is horizontally fixedly disposed on the sixth slider 65. The fixing hoop 68 is fixedly fitted onto the other end of the sand conveying hose 61 of the first sand conveying component, and the fixing hoop 68 is fixedly connected to the other end of the third transmission rod 67. When the sixth motor 66 drives the third screw 64 to rotate in the forward direction, it will drive the other end of the sand conveying hose 61 to move above the first sand box 25 for sand filling through the sixth slider 65, the third transmission rod 67 and the fixing hoop 68.

[0067] The second filling component 57 has the same structure as the first filling component, and the connection method between the second filling component 57 and the second sand conveying component 56 is the same as the connection method between the first filling component and the first sand conveying component. This allows the second filling component 57 to drive the other end of the sand conveying hose 61 of the second sand conveying component 56 into the sand filling port 69 on the second sand box 48, thereby filling the molding sand into the second sand box 48. Furthermore, the sand filling port 69 is generally S-shaped, with its lower port extending through one side wall of the second sand box 48. The height of the upper port of the sand filling port 69 is greater than the height of its lower port, and the upper port of the sand filling port 69 is used to be inserted by the other end of the sand conveying hose 61 of the second sand conveying component 56. The sand filling port 69 is used to guide the molding sand conveyed by the sand conveying hose 61 into the second sand box 48. Furthermore, the space in the second sand box 48 between the lower port of the sand filling port 69 and the second compaction head 55 meets the requirement for storing the required amount of molding sand. Alternatively, the upper port of the sand filling interface 69 is designed in a flared shape to facilitate insertion by the other end of the sand conveying hose 61. It should be noted that when the second compaction head 55 pushes the molding sand upwards, the molding sand will not leak out of the sand filling interface 69. Alternatively, the bottom surface of the second sand box 48 is provided with a sand cleaning port to facilitate the discharge of a small amount of molding sand from the bottom of the second sand box 48.

[0068] The applicable methods of the novel automated sand casting system include: 1) When the fourth power component is started in the forward direction, it drives the first sand box 25 of the outer mold component to be fastened to the outside of the sand mold 17 through the transmission component, and the first sand box 25 is connected to the fixed plate 16 in a transmission connection; at the same time, it drives the top surface of the second sand box 48 of the inner mold component to be connected to the bottom surface of the core mold 18, and the second sand box 48 is connected to the bottom surface of the core mold 18 in a transmission connection. 2) The first filling component and the second filling component 57 drive the connected first sand conveying component and the second sand conveying component 56 to fill the molding sand into the first sand box 25 and the second sand box 48 respectively; 3) First, the second extrusion member is activated, causing the molding sand on it to move upward. When the horizontal height of the second compaction head 55 is greater than the lower port of the sand filling interface 69, the vibration member is activated, causing the molding mold to start vibrating. The molding mold causes the first sand box 25 and the second sand box 48 to vibrate, fully and evenly filling the first sand box 25 and the second sand box 48 with the incoming molding sand. (At this time, the second compaction head 55 continues to extrude upward until the molding sand in the second sand box 48 is compacted. Then the vibration member stops. After the molding sand in the second sand box 48 is compacted, the second buffer locking member locks the second buffer member 50.) 4) Activate the first extrusion component to extrude the molding sand in the first sand box 25 until the molding sand is compacted (after compaction, the first buffer locking component locks the first buffer component). 5) Reverse start of the fourth power component drives the first sand box 25 of the outer mold component to move upward to a predetermined position and the second sand box 48 of the inner mold component to move downward to a predetermined position through the transmission component; 6) Start the second power component in the forward direction, and drive the molding die component to move to the left through the vibrating component; 7) The fourth power component is started in the forward direction, which drives the first sand box 25 to move downward and the second sand box 48 to move upward, so that the two close. 8) After the first compaction head 44 of the first extrusion piece moves upward to the predetermined position, molten metal liquid is poured into the gating channel, so that the molten metal liquid fully fills the mold cavity formed by the first sand box 25 and the second sand box 48. 9) Activate the first liquid cooling component and the second liquid cooling component to cool (heat treat) the outer and inner sides of the shell of the cast metal part, respectively, so as to improve the cooling efficiency of the cast metal part and improve the cooling balance of the outer and inner sides, thereby improving the structural performance of the cast metal part; 10) After the first power component 3 is started, the first sand box 25 and the second sand box 48 are rotated counterclockwise through the support plate 2 (at this time, the first buffer component and the second buffer component 50 are both unlocked), the fourth power component is started in the opposite direction to separate the first sand box 25 and the second sand box 48, so that the casting metal part is removed from the molding sand and the molding sand is completely removed from the first sand box 25 and the second sand box 48 (the second extrusion component can be started as needed to improve the sand removal efficiency).

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A novel automated sand casting molding system, characterized in that, include: A first support member is disposed on the ground. The first support member includes a support base and a first rotating support member. The support base is installed on the ground, and the first rotating support member provides support and rotational force on the support base. A shaping component is disposed on the first support component. The shaping component includes a second support component and a shaping mold component. The second support component is on the first rotating support component and provides vibration and lateral sliding support for the connected shaping mold component. A die-casting mold component is mounted on the first support component. The die-casting mold component includes a fourth support component, an outer mold component, an inner mold component, and a sand-filling component. The fourth support component is mounted on the first rotating support component. The outer mold component and the inner mold component are both mounted on the fourth support component. The fourth support component drives the outer mold component and the inner mold component to be respectively fastened onto the molding mold component. The sand-filling component is mounted on the support base and is used to automatically fill molding sand into the outer mold component and the inner mold component.

2. The novel automated sand casting system according to claim 1, characterized in that, The second support member includes a first slide groove, a vibrating element, and a second power element. The first slide groove is disposed on the support plate of the first rotating support member. The vibrating element is slidably embedded in the first slide groove. The second power element is connected to the vibrating element on the first slide groove to control the vibrating element to slide or remain stationary in the first slide groove.

3. The novel automated sand casting system according to claim 2, characterized in that, The vibrating component includes a second slide groove, a first slider, a reciprocating screw, and a third power component. The second slide groove is slidably fitted into the first slide groove and is connected to the second power component. The reciprocating screw is rotatably disposed in the second slide groove. The first slider is slidably fitted into the second slide groove and has a threaded hole on the first slider fitted onto the reciprocating screw. The third power component is rotatably connected to one end of the reciprocating screw on the second slide groove.

4. The novel automated sand casting system according to claim 3, characterized in that, The molding mold includes a fixed plate, a sand mold, and a core mold. One end of the fixed plate is horizontally fixed on the first slider and moves with it. The sand mold is disposed on the top surface of the fixed plate, and the core mold is disposed on the bottom surface of the fixed plate.

5. The novel automated sand casting system according to claim 4, characterized in that, The fourth support component includes a transmission component and a fourth power component. The transmission component is disposed in a groove on the support plate and is used to drive the connected outer mold component to move towards the sand mold and drive the connected inner cavity mold component to move towards the core mold. The fourth power component provides power to the connected transmission component on the support plate.

6. The novel automated sand casting system according to claim 5, characterized in that, The external mold component includes a fifth support, a first sand box, a first sliding locking component, a shell cooling component, and a first extrusion component. The fifth support is disposed on the transmission component to provide support and lateral sliding for the connected first sand box. The first sliding locking component locks or slides the first sand box laterally on the fifth support. The shell cooling component is disposed on the first sand box. The first extrusion component is disposed on the support base to compress and compact the molding sand in the first sand box.

7. The novel automated sand casting system according to claim 6, characterized in that, The outer shell cooling component includes a first buffer, a first buffer locking component, a first bracket, and a first liquid cooling component. The first buffer is disposed on the first sand box to provide vertical sliding buffer. The first buffer locking component is on the first buffer to vertically lock or release the first buffer on the first sand box. The first bracket is on the first buffer to provide support for the connected first liquid cooling component. The first liquid cooling component includes a first annular cooling pipe disposed on the first bracket, and the inner circle contour of the first annular cooling pipe is larger than the contour of the sand mold.

8. The novel automated sand casting system according to claim 6 or 7, characterized in that, The inner cavity mold component includes a seventh support member, a second sand box, a second sliding locking member, an inner cavity cooling member, and a second extrusion member. The seventh support member provides support and lateral sliding for the connected second sand box on the transmission member. The second sliding locking member locks or slides the second sand box laterally on the seventh support member, so that the second sand box is vertically aligned with the first sand box. The inner cavity cooling member is disposed on the second sand box, and the second extrusion member is disposed on the second sand box to compress and compact the molding sand in the second sand box.

9. The novel automated sand casting system according to claim 8, characterized in that, The inner cavity cooling component includes a second buffer, a second buffer locking component, a second bracket, and a second liquid cooling component. The second buffer is disposed on the second sand box to provide vertical sliding buffer. The second buffer locking component is on the second buffer to vertically lock or release the second buffer on the second sand box. The second bracket is on the second buffer to provide support for the connected second liquid cooling component. The second liquid cooling component includes a second annular cooling pipe disposed on the second bracket, and the outer contour of the second annular cooling pipe is smaller than the inner cavity contour of the core mold.

10. The novel automated sand casting system according to claim 8, characterized in that, The sand feeding device includes a first sand conveying device, a second sand conveying device, a first filling device, and a second filling device. The first sand conveying device and the second sand conveying device are both disposed on the support base and convey the molding sand to the first sand box and the second sand box, respectively. The first filling device and the second filling device are both disposed on the support base, and the first filling device is connected to the first sand conveying device to move the other end of the sand conveying hose of the first sand conveying device to the first sand box to fill the molding sand. The second filling component is connected to the second sand conveying component to move the other end of the sand conveying hose of the second sand conveying component to the second sand box to fill the molding sand.

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