An integrated mechanism and process for impregnation, coating and drying of sand casting cores

Abstract

This invention relates to the field of sand casting technology and discloses an integrated mechanism and process for impregnation, coating, and drying of sand casting cores. The mechanism includes an integrated impregnation, coating, and drying machine. A support platform is installed inside the machine, and a base block is installed on top of the support platform. A mold core is bolted to the top of the base block. This integrated mechanism utilizes a limiting component. When the bolts loosen, the threaded column moves upward along the connecting column and the strip groove, driving the slider upward synchronously. This pushes the movable rod outward, causing the moving block to slide along the strip block towards the limiting column. An insert plate is inserted into the surface of the limiting column to form a radial lock. Simultaneously, the long plate pulls the movable strip, causing the torsion ring to rotate and generate a reverse self-locking torque. This, combined with the axial limiting of the limiting column, prevents the bolts from loosening, rotating, or coming out. This prevents the mold core from shifting or failing during impregnation and drying, significantly improving assembly firmness, operational stability, and core forming quality.

Description

Technical Field

[0001] This invention relates to the field of sand casting technology, specifically to an integrated mechanism and process for impregnating, coating, and drying sand casting cores. Background Technology

[0002] Sand casting is a widely used blank forming process in the machinery manufacturing industry. As a key component of the casting cavity, the surface quality and positioning accuracy of the sand casting core directly affect the internal smoothness and dimensional accuracy of the casting. In the core production process, dip coating and drying are core steps to improve the surface strength of the core and prevent sand adhesion. Typically, the core mold needs to be fixed to a specialized fixture before dip coating and drying are performed sequentially. Currently, the industry mostly uses bolt-locking fixtures to assemble the core and base, and then uses dip coating and drying equipment to complete the integrated processing.

[0003] However, in actual production, the liquid impact from dipping, the high-temperature thermal expansion and contraction during drying, and the vibration of the equipment can all cause the connecting bolts to loosen, rotate, or even come off, leading to problems such as core positioning misalignment and assembly failure. Traditional tooling lacks an automatic anti-loosening and self-locking structure, making it impossible to provide real-time restraint in the early stages of bolt loosening. This not only reduces the molding quality and operational stability of the core dipping and drying process but also requires frequent shutdowns for maintenance and reclamping, severely impacting the production efficiency and product qualification rate of sand-cast cores. Summary of the Invention

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an integrated mechanism for dipping, coating, and drying sand casting cores. This mechanism solves the problem that during the dipping and drying process of sand casting cores, the connecting bolts may loosen, rotate, or come out due to liquid impact, high-temperature thermal expansion and contraction, and equipment vibration. This results in core positioning misalignment, assembly failure, poor molding quality, and the need for frequent machine shutdowns for maintenance.

[0005] Technical solution To achieve the above objectives, the present invention provides the following technical solution: An integrated mechanism for impregnating, coating, and drying sand casting cores includes an integrated impregnation and drying machine. A support platform is installed inside the machine, and a base block is installed on the top of the support platform. A mold core is bolted to the top of the base block. The mechanism also includes a limiting component for restricting the bolts used to connect the mold core; a moving component for adjusting the bolt connections of the mold core; and a rotating component for positioning the bolts. The limiting component includes a fixed post disposed inside the base block, a connecting post fixedly installed inside the fixed post, a threaded post slidably connected inside the connecting post, a slider mounted on the outside of the threaded post, the slider slidably connected to the outer wall of the connecting post, a movable rod hinged to the surface of the slider, a moving block hinged to the inside of the movable rod, a strip block mounted on the top of the connecting post, the moving block slidably connected inside the strip block, an insert plate mounted on the outside of the moving block, and a limiting post installed inside the fixed post.

[0006] Preferably, a fixing block is installed inside the fixing column, a torsion ring is rotatably connected to the inner side of the fixing block, a movable strip is hinged to the outer side of the torsion ring, a long plate is hinged to the surface of the movable strip, and the long plate is installed on the top of the movable block.

[0007] Preferably, the surface of the connecting column is provided with a strip groove, the cross-section of the insert plate is triangular, and the surface of the fixing block is provided with a sliding groove.

[0008] Preferably, the moving component includes a fixed disk, which is installed inside the base block. A turntable is installed on the top of the fixed disk, a control rod is installed on the surface of the turntable, a sliding rod is slidably connected to the surface of the turntable, and a fixed post is installed on the top of the sliding rod.

[0009] Preferably, the turntable surface is provided with an arc-shaped groove, and the sliding rod extends into the arc-shaped groove and slides in cooperation with the arc-shaped groove.

[0010] Preferably, the rotating assembly includes: a movable plate hinged to the surface of the sliding rod, the movable plate passing through the fixed disk, a connecting plate mounted on the top of the movable plate, an arc-shaped block mounted on the inner side of the connecting plate, and a positioning block slidably connected to the inner side of the arc-shaped block.

[0011] Preferably, an adjusting spring is installed on the outer wall of the positioning block, and the adjusting spring is installed inside the arc-shaped block.

[0012] Preferably, there are six arc-shaped blocks and fixing posts, and the six arc-shaped blocks and fixing posts are arranged in a circular array with the center point of the fixing disk as the center.

[0013] Preferably, the bottom block has a groove on its surface, and the control rod passes through the bottom block.

[0014] A sand casting core impregnation and drying process further includes the following steps: Step 1: Place the mold core on top of the base block using bolts, operate the control lever of the moving component, adjust the radial position of the sliding rod and the fixed column, and complete the alignment and position matching of the bolt mounting holes; Step 2: The arc-shaped block and the positioning block of the rotating component elastically clamp the bolt under the action of the adjusting spring, thereby achieving 360° circumferential positioning constraint; Step 3: Tighten the threaded post to secure the bolt head of the retaining component's insert plate, thus completing the secure assembly of the mold core; Step 4: The support platform carries the bottom block and mold core into the dip coating and drying machine to complete the dip coating treatment on the surface of the core. During drying, the clamping state remains unchanged. The mold core is dried at a constant temperature in the dip coating and drying machine. If the bolts become loose during the drying process, the limiting component will automatically trigger radial locking and reverse self-locking to prevent the mold core from shifting. After drying, the limiting component and the rotating component will be released, the mold core will be removed, and the integrated processing will be completed.

[0015] Beneficial effects Compared with the prior art, the present invention provides an integrated mechanism for impregnation, coating and drying of sand casting cores, which has the following beneficial effects: 1. This integrated dipping, coating, and drying mechanism for sand-cast cores utilizes a limiting component. When bolts loosen, the threaded post moves upward along the connecting post and the slot, driving the slider upward simultaneously. This pushes the movable rod outward, causing the moving block to slide along the slot towards the limiting post. The insert plate then engages with the limiting post surface to form a radial lock. Simultaneously, the long plate pulls the movable strip, causing the torsion ring to rotate and generate a reverse self-locking torque. This, combined with the axial limiting of the limiting post, prevents bolt loosening, rotation, and disengagement. This prevents the core from shifting or failing during dipping and drying, significantly improving assembly firmness, operational stability, and core forming quality.

[0016] 2. This integrated sand casting core impregnation, coating, and drying mechanism utilizes a moving component. During use, the mold core is first pre-placed on top of the base block using bolts. Then, the control lever of the moving component is operated, causing the turntable to rotate on the fixed plate. The arc-shaped groove on the turntable moves circumferentially, driving the sliding rod to move radially towards the center along the fixed plate, bringing the fixed post at the top of the sliding rod closer to the bolt mounting position, thus achieving precise bolt position adjustment. This structure can accommodate mold cores with different hole positions and sizes, preventing assembly failures due to mismatched mounting holes or center offset, effectively improving the mechanism's versatility, installation adaptability, and positioning consistency for multi-specification mold cores.

[0017] 3. This integrated sand casting core impregnation and drying mechanism utilizes a rotating component. When the sliding rod moves radially, it synchronously drives the moving plate to move horizontally. The moving plate pushes the connecting plate and the arc-shaped block closer to the bolt. The positioning block inside the arc-shaped block adaptively expands and contracts under the action of the adjusting spring, elastically gripping the outer wall of the bolt. Six sets of circumferentially distributed arc-shaped blocks and positioning blocks achieve circumferential constraint, preventing bolt rotation, tilting, or eccentricity. The adjusting spring can adapt to bolts of different diameters, maintaining preload throughout the process, resisting displacement caused by vibration and thermal expansion and contraction, and significantly improving bolt positioning accuracy, assembly coaxiality, and core installation stability. Attached Figure Description

[0018] Figure 1This is a front view schematic diagram of an integrated mechanism for impregnation, coating, and drying of sand casting cores proposed in this invention; Figure 2 This is a front view schematic diagram of the mold core structure of the integrated sand casting mud core dipping, coating and drying mechanism proposed in this invention; Figure 3 This is a schematic diagram of the bottom block structure of an integrated mechanism for impregnation, coating and drying of sand casting mud cores proposed in this invention; Figure 4 This is a schematic diagram of the connection structure of the moving component and rotating component of the integrated mechanism for impregnation, coating and drying of sand casting mud core proposed in this invention; Figure 5 This is a front view schematic diagram of the limiting component of the integrated mechanism for impregnation, coating and drying of sand casting mud core proposed in this invention; Figure 6 This is a front view schematic diagram of the connecting column structure of the integrated mechanism for impregnation, coating and drying of sand casting mud core proposed in this invention; Figure 7 This is a front view schematic diagram of the moving component of the integrated mechanism for impregnation, coating and drying of sand casting mud core proposed in this invention; Figure 8 This is a front view schematic diagram of the rotating component of the integrated mechanism for impregnation, coating and drying of sand casting mud core proposed in this invention; Figure 9 This is a schematic cross-sectional view of an arc-shaped block in the structure of an integrated mechanism for impregnation, coating, and drying of sand casting mud cores proposed in this invention.

[0019] In the diagram: 1. Dip-coating and drying integrated machine; 2. Support platform; 3. Base block; 4. Mold core; 5. Restriction component; 51. Fixed column; 52. Connecting column; 53. Threaded column; 54. Slider; 55. Movable rod; 56. Moving block; 57. Strip block; 58. Insert plate; 59. Restriction column; 510. Fixed block; 511. Torsion ring; 512. Movable strip; 513. Long plate; 520. Strip groove; 5100. Slide groove; 6. Moving component; 61. Fixed plate; 62. Turntable; 63. Control rod; 64. Sliding rod; 620. Arc groove; 7. Rotating component; 71. Moving plate; 72. Connecting plate; 73. Arc block; 74. Positioning block; 75. Adjusting spring; 30. Groove. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1 - Figure 9As shown, a sand casting mud core dip coating and drying integrated mechanism includes a dip coating and drying integrated machine 1, a support platform 2 is installed on the inner side of the dip coating and drying integrated machine 1, a bottom block 3 is installed on the top of the support platform 2, and a mold core 4 is connected to the top of the bottom block 3 by bolts. It also includes a limiting component 5 for limiting the bolts used to connect the mold core 4; The movable component 6 is used to adjust the bolt connections of the mold core 4; Rotating component 7 is used to position the bolt; First, the limiting component 5 includes a fixed post 51, which is located inside the base block 3. A connecting post 52 is fixedly installed inside the fixed post 51. A threaded post 53 is slidably connected inside the connecting post 52. A slider 54 is installed on the outside of the threaded post 53 and is slidably connected to the outer wall of the connecting post 52. A movable rod 55 is hinged to the surface of the slider 54. A moving block 56 is hinged to the inside of the movable rod 55. A strip block 57 is installed on the top of the connecting post 52. The moving block 56 is slidably connected inside the strip block 57. An insert plate 58 is installed on the outside of the moving block 56. A limiting post 59 is installed inside the fixed post 51. Through the linkage transmission of the threaded post 53, the slider 54, the movable rod 55 and the moving block 56, the insert plate 58 is automatically locked when the bolt is loose, achieving the effect of real-time anti-loosening and anti-rotation.

[0022] Secondly, a fixing block 510 is installed inside the fixing column 51. A torsion ring 511 is rotatably connected to the inner side of the fixing block 510. A movable strip 512 is hinged to the outer side of the torsion ring 511. A long plate 513 is hinged to the surface of the movable strip 512. The long plate 513 is installed on the top of the moving block 56. The moving block 56 drives the long plate 513, the movable strip 512 and the torsion ring 511 to form a reverse torque, realizing loosening self-locking and further improving the reliability of bolt tightening.

[0023] Furthermore, the surface of the connecting column 52 is provided with a strip groove 520, the cross-section of the insert plate 58 is triangular, and the surface of the fixing block 510 is provided with a sliding groove 5100. The strip groove 520 provides guidance for the slider 54, the triangular insert plate 58 improves the clamping fit, and the sliding groove 5100 ensures the smooth movement of the torsion ring 511, thus achieving the effect of structural stability and precise action.

[0024] Furthermore, the moving component 6 includes a fixed plate 61, which is installed inside the base block 3. A turntable 62 is installed on the top of the fixed plate 61, and a control rod 63 is installed on the surface of the turntable 62. A sliding rod 64 is slidably connected to the surface of the turntable 62. A fixed post 51 is installed on the top of the sliding rod 64. The turntable 62 drives the sliding rod 64 to move radially, so that the position of the fixed post 51 is adjustable, thus achieving the effect of adapting to the bolt hole positions of different specifications of the mold core 4.

[0025] Furthermore, the surface of the turntable 62 is provided with an arc-shaped groove 620, and the sliding rod 64 extends into the arc-shaped groove 620 and slides in cooperation with the arc-shaped groove 620. Through the guiding drive of the arc-shaped groove 620, multiple sets of sliding rods 64 can achieve synchronous centripetal and centrifugal motion, so as to achieve the effect of unified positioning center and fast and efficient adjustment.

[0026] Furthermore, the rotating assembly 7 includes: a movable plate 71, which is hinged to the surface of the sliding rod 64. The movable plate 71 passes through the fixed plate 61. A connecting plate 72 is installed on the top of the movable plate 71. An arc-shaped block 73 is installed on the inner side of the connecting plate 72. A positioning block 74 is slidably connected to the inner side of the arc-shaped block 73. By moving the movable plate 71 and the connecting plate 72 together, the arc-shaped block 73 is moved closer together to achieve circumferential wrapping and positioning of the bolt, thereby preventing the bolt from tilting or becoming eccentric.

[0027] Furthermore, an adjusting spring 75 is installed on the outer wall of the positioning block 74. The adjusting spring 75 is installed inside the arc-shaped block 73. The adjusting spring 75 provides elastic preload, so that the positioning block 74 can adaptively fit bolts of different diameters, achieving the effect of universal compatibility and continuous clamping.

[0028] Finally, there are six arc-shaped blocks 73 and fixed posts 51, and the six arc-shaped blocks 73 and fixed posts 51 are arranged in a circular array with the center point of the fixed plate 61 as the center. Through the six sets of evenly distributed circular structures, the bolts are positioned and limited in all directions of 360°, achieving the effects of uniform force, high positioning accuracy, and stable locking. The bottom block 3 has a groove 30 on its surface, and the control rod 63 passes through the bottom block 3.

[0029] A sand casting core impregnation and drying process further includes the following steps: Step 1: Place the mold core 4 on top of the base block 3 with bolts, operate the control rod 63 of the moving component 6, adjust the radial position of the sliding rod 64 and the fixed column 51, and complete the alignment and position matching of the bolt mounting holes; Step 2: The arc-shaped block 73 and the positioning block 74 of the rotating component 7 elastically clamp the bolt under the action of the adjusting spring 75, thereby achieving 360° circumferential positioning constraint; Step 3: Tighten the threaded post 53 to lock the bolt head in place by the insert plate 58 of the limiting component 5, thus completing the secure assembly of the mold core 4; Step 4: The support platform 2 carries the bottom block 3 and the mold core 4 into the dip coating and drying machine 1 to complete the dip coating treatment on the surface of the core. During drying, the clamping state remains unchanged. The mold core 4 is dried at a constant temperature in the dip coating and drying machine 1. If the bolts become loose during the drying process, the limiting component 5 will automatically trigger radial locking and reverse self-locking to prevent the mold core 4 from shifting. After drying, the limiting component 5 and the rotating component 7 are released, the mold core 4 is removed, and the integrated processing is completed.

[0030] Working principle: The core of this mechanism, through the coordinated action of limiting component 5, moving component 6, and rotating component 7, achieves rapid positioning, adaptive locking, and anti-loosening of the bolts connecting the sand casting core mold 4 and the bottom block 3. Together with the dip coating and drying integrated machine 1, it completes the dip coating and drying integrated operation, ensuring stability throughout the process and adaptability to different specifications of mold core 4, thereby improving the processing efficiency and assembly accuracy of sand casting cores.

[0031] When in use, the mold core 4 is first placed stably on the top mounting surface of the base block 3 using connecting bolts. Then, the control lever 63 of the moving component 6 is manually operated. The control lever 63 is forced to drive the turntable 62 to rotate smoothly on the support surface of the fixed plate 61. As the turntable 62 rotates, the arc-shaped groove 620 on its surface undergoes circumferential displacement. The groove wall of the arc-shaped groove 620 continuously drives the sliding rod 64 to move synchronously towards the center along the radial direction of the fixed plate 61. This causes the fixed column 51 installed on the top of the sliding rod 64 to move smoothly towards the bolt installation position in the central area. This achieves precise adjustment of the bolt installation position, preventing different specifications of mold core 4 from being unable to be installed due to mismatched bolt installation hole positions or offset positioning center. This improves the versatility, installation adaptability, and positioning consistency of multi-specification mold core 4.

[0032] When the sliding rod 64 moves radially under the drive of the moving component 6, the sliding rod 64 synchronously drives the moving plate 71 hinged to its surface to move radially. The moving plate 71 passes through the fixed plate 61 and maintains stable guidance without jamming or deflection. The radial movement of the moving plate 71 pushes the connecting plate 72 and the arc-shaped block 73 toward the central bolt. The positioning block 74 on the inner side of the arc-shaped block 73 first contacts the outer wall of the bolt. Under the elastic thrust of the adjusting spring 75, the positioning block 74 adaptively extends and retracts along the inner wall of the arc-shaped block 73, always fitting the cylindrical surface of the bolt to form an elastic clamping positioning. The six arc-shaped blocks 73 arranged in a circumferential array together with the positioning blocks 74 surround and constrain the bolt 360° in a circumferential direction, limiting the bolt's movement. During the locking, dipping, and drying processes, the bolt may rotate, tilt, eccentricate, or move, ensuring that the bolt axis coincides with the central axis of the fixed column 51. The adjusting spring 75 can automatically compensate for the extension of the positioning block 74 according to the difference in bolt diameter, so that the rotating component 7 can be adapted to the connecting bolts of different specifications of the mold core 4. The bolts of different sizes can be quickly positioned without changing parts, improving the versatility of the mechanism. Throughout the dipping and drying process of the mold core 4, the adjusting spring 75 continuously maintains the preload, and the positioning block 74 always stably clamps the bolt, preventing the bolt from shifting position due to vibration and thermal expansion and contraction. This ensures that the locking and limiting actions are stable and reliable, and improves the bolt positioning accuracy, assembly coaxiality, and installation stability of the mold core 4.

[0033] When the bolt loosens, the bolt will cause the threaded post 53 to move axially upward along the inner wall of the connecting post 52 and the guide position of the strip groove 520 through the threaded connection. As the threaded post 53 moves upward, the slider 54 fixedly installed on its outer side slides smoothly upward along the outer wall of the connecting post 52. During the upward movement, the slider 54 continuously drives the movable rod 55 hinged to it to move outward. The movable rod 55 smoothly pushes the moving block 56 outward, so that the moving block 56 slides precisely along the guide groove inside the strip block 57 towards the limiting post 59. During the sliding process, the insert plate 58 on the outer side of the moving block 56 gradually expands and further inserts into the surface of the limiting post 59. The surface forms a stable and reliable radial locking structure, effectively limiting the radial movement and circumferential rotation of the bolt. At the same time, the long plate 513 on the top of the moving block 56 moves outward and pulls the movable strip 512 to move synchronously, thereby driving the torsion ring 511 to rotate in the sliding groove 5100 of the fixed block 510 and generating a self-locking torque opposite to the loosening direction, which counteracts the loosening tendency of the bolt. Combined with the axial limiting effect of the limiting column 59 on the threaded column 53, it prevents the positioning offset, assembly failure and positional deviation of different specifications of mold core 4 due to bolt loosening during the dip coating and drying process, significantly improving the installation firmness of the mold core 4, the overall operation stability and the dip coating and drying molding quality of the sand casting mud core.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A sand casting core impregnation, coating, and drying integrated mechanism, comprising an impregnation, coating, and drying integrated machine (1), characterized in that: The dip coating and drying integrated machine (1) has a support platform (2) installed on its inner side, and a bottom block (3) is installed on the top of the support platform (2). A mold core (4) is connected to the top of the bottom block (3) by bolts. It also includes a limiting component (5) for limiting the bolts used for connecting the mold core (4); The movable component (6) is used to adjust the bolted connection of the mold core (4); Rotating component (7) is used to position the bolt; The limiting component (5) includes a fixed post (51) which is located inside the base block (3). A connecting post (52) is fixedly installed inside the fixed post (51). A threaded post (53) is slidably connected inside the connecting post (52). A slider (54) is installed on the outside of the threaded post (53). The slider (54) is slidably connected to the outer wall of the connecting post (52). A movable rod (55) is hinged to the surface of the slider (54). A moving block (56) is hinged to the inside of the movable rod (55). A strip block (57) is installed on the top of the connecting post (52). The moving block (56) is slidably connected inside the strip block (57). An insert plate (58) is installed on the outside of the moving block (56). A limiting post (59) is installed inside the fixed post (51).

2. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 1, characterized in that: The fixed column (51) has a fixed block (510) installed inside. The fixed block (510) has a torsion ring (511) rotatably connected to its inner side. The torsion ring (511) has a movable strip (512) hinged to its outer side. The movable strip (512) has a long plate (513) hinged to its surface. The long plate (513) is installed on the top of the movable block (56).

3. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 2, characterized in that: The connecting column (52) has a strip groove (520) on its surface, the insert plate (58) has a triangular cross section, and the fixing block (510) has a sliding groove (5100) on its surface.

4. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 1, characterized in that: The moving component (6) includes a fixed disk (61) installed inside the base block (3), a turntable (62) installed on the top of the fixed disk (61), a control rod (63) installed on the surface of the turntable (62), a sliding rod (64) slidably connected to the surface of the turntable (62), and a fixed column (51) installed on the top of the sliding rod (64).

5. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 4, characterized in that: The turntable (62) has an arc-shaped groove (620) on its surface, and the sliding rod (64) extends into the arc-shaped groove (620) and slides in cooperation with the arc-shaped groove (620).

6. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 1, characterized in that: The rotating assembly (7) includes: a movable plate (71) hinged to the surface of the sliding rod (54), the movable plate (71) passing through the fixed plate (61), a connecting plate (72) mounted on the top of the movable plate (71), an arc-shaped block (73) mounted on the inner side of the connecting plate (72), and a positioning block (74) slidably connected to the inner side of the arc-shaped block (73).

7. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 6, characterized in that: An adjusting spring (75) is installed on the outer wall of the positioning block (74), and the adjusting spring (75) is installed inside the arc-shaped block (73).

8. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 7, characterized in that: There are six arc-shaped blocks (73) and fixed columns (51), and the six arc-shaped blocks (73) and fixed columns (51) are arranged in a circular array with the center point of the fixed disk (61) as the center.

9. The integrated mechanism for impregnation, coating, and drying of sand casting cores according to claim 4, characterized in that: The bottom block (3) has a groove (30) on its surface, and the control rod (63) passes through the bottom block (3).

10. A sand casting core impregnation and drying process, characterized in that: The integrated sand casting core impregnation, coating, and drying mechanism according to any one of claims 1-9 further includes the following steps: Step 1: Place the mold core (4) on top of the base block (3) with bolts, operate the control rod (63) of the moving component (6), adjust the radial position of the sliding rod (64) and the fixed column (51) to complete the alignment and position matching of the bolt mounting holes; Step 2: The arc block (73) and the positioning block (74) of the rotating component (7) elastically clamp the bolt under the action of the adjusting spring (75) to achieve 360° circumferential positioning constraint; Step 3: Tighten the threaded post (53) to lock the bolt head of the insert plate (58) of the limiting component (5), and complete the secure assembly of the mold core (4); Step 4: The support platform (2) drives the bottom block (3) and the mold core (4) into the dip coating and drying machine (1) to complete the dip coating treatment on the surface of the core. During the drying process, the clamping state remains unchanged. The mold core (4) is dried at a constant temperature in the dip coating and drying machine (1). When the bolts become loose during the drying process, the limiting component (5) automatically triggers radial locking and reverse self-locking to prevent the mold core (4) from shifting. After the drying is completed, the limiting component (5) and the rotating component (7) are released, and the mold core (4) is removed to complete the integrated processing.

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