Coated sand casting production line and process based on intelligent casting island

Abstract

The present invention relates to the technical field of coated sand casting, and discloses a coated sand casting production line based on an intelligent casting island, comprising a machine body, in which a sand feeding pipe, a negative pressure sand suction pipe, a distance adjusting member, and a rotatable transmission shaft are respectively installed. The distance adjusting member is connected to two symmetrically arranged mold frames with adjustable spacing. Both mold frames are provided with a casting system, which includes a tooth plate installed on the machine body, a magnetic field generator installed on the machine body, a casting frame that can synchronously move back and forth and left and right on the mold frame, and a synchronous shaft that can periodically alternate forward and reverse rotation. The present invention achieves a technological breakthrough through the synergistic effect of a magneto-induced vibration coating and multi-mode vibration. The functional layer of Fe 70 Ga 30 Alloy nanoparticles produce periodic orientation of magnetic domains in an alternating magnetic field, stimulating micron-level multi-axial vibrations, penetrating deep into the interface between the molding sand and the mold, destroying the intermolecular forces, and enabling non-contact stripping of deeply adhered sand, thus solving the problem of insufficient energy penetration in traditional impact cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of coated sand casting, and more specifically, to a coated sand casting production line and process based on an intelligent casting island. Background Art

[0002] The intelligent casting island is an automatic working platform with intelligent production functions. At present, when casting sand molds with coated sand, a special casting production line is used. In the existing technology, the patent document with publication number CN118875228B discloses a coated sand casting production line and process based on the intelligent casting island, which includes a mounting frame, the mounting frame is fixedly connected to a symmetrically arranged casting mold, the mounting frame is slidably connected to a discharger, the discharger is slidably connected to a sand casting machine, and also includes symmetrically arranged fixed plates, the symmetrically arranged fixed plates are fixedly connected to the mounting frame, and electric push rods are fixedly connected between the symmetrically arranged fixed plates. When the above device completes each sand casting, the air jet moves back and forth to spray air to clean the inner wall of the casting mold, so as to avoid residual coated sand in the casting mold affecting the quality of the sand mold for subsequent casting. However, the use of the above device causes the following technical problems:

[0003] Air jet cleaning can only remove loose sand on the surface, but has poor stripping effect on deeply adhered molding sand, especially in high-density solidified areas, resulting in residual sand particles in the mold cavity, affecting the accuracy of subsequent castings. During the air jet process, loose sand is scattered irregularly, requiring manual cleaning, increasing production costs. At the same time, the sand recovery rate is low, resulting in resource waste. Traditional cleaning methods rely on concentrated energy impact, which can easily lead to local stress concentration in the mold, causing wear or deformation, and shortening the mold life.

[0004] Based on this, the present invention provides a coated sand casting production line and process based on an intelligent casting island to solve the technical problems raised in the above background technology. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the present invention provides a coated sand casting production line and process based on an intelligent casting island. The present invention achieves a technological breakthrough through the synergistic effect of magnetically induced vibration coating and multi-mode vibration. The functional layer of Fe 70 Ga 30 Alloy nanoparticles produce periodic orientation of magnetic domains in an alternating magnetic field, stimulating micron-level multi-axial vibrations, penetrating deep into the interface between the molding sand and the mold, destroying the intermolecular forces, and enabling non-contact stripping of deeply adhered sand, thus solving the problem of insufficient energy penetration in traditional impact cleaning.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a coated sand casting production line based on an intelligent casting island, comprising a machine body, in which a sand feeding pipe, a negative pressure sand suction pipe, a distance adjusting member, and a rotatable transmission shaft are respectively installed. The distance adjusting member is transmission-connected to two symmetrically arranged mold frames with adjustable spacing, and both mold frames are equipped with a casting system;

[0007] The casting system includes a tooth plate installed on the machine body, a magnetic field generator installed on the machine body, a casting frame that can synchronously move back and forth and left and right on the mold frame, and a synchronous shaft that can periodically alternate forward and reverse. The synchronous shaft is rotatably installed on the casting frame. When the transmission shaft is working, the reciprocating frequency and reciprocating stroke of the casting frame change periodically. A turning frame is installed on the casting frame. Two symmetrically arranged 90° turning tooth segments are provided on the tooth plate and are used to drive the turning frame to turn 90°. A group of 45° turning tooth segments are provided at intervals at positions corresponding to the two 90° turning tooth segments on the tooth plate. A sand throwing shaft driven by the synchronous shaft is rotatably installed in the turning frame. A casting mold is installed on the sand throwing shaft. The sand throwing shaft is provided with a hollow flow channel connected to the inner cavity of the casting mold. The inner cavity of the casting mold is coated with a magneto-vibration coating. The magneto-vibration coating excites multi-axial micro-vibration through an alternating magnetic field to achieve the separation of the molding sand and the casting mold.

[0008] The magneto-vibration coating comprises a transition layer, a functional layer and a heat-insulating layer which are sequentially arranged from the inside to the outside.

[0009] As a preferred technical solution of the present invention, a microcontroller is installed on the end face of the body, a box door is provided in the middle of the body, a sand collecting chamber with a top opening is provided in the body and at a position corresponding to the bottom of the casting mold, a first transmission motor is installed on the side of the body, and the output shaft end of the first transmission motor is fixedly connected to the transmission shaft, and an electric heater is provided in the casting mold to dry and self-peel off the molding sand, and the heating temperature of the electric heater is 220℃-260℃.

[0010] As a preferred technical solution of the present invention, the distance adjusting part includes a clamping screw rotatably connected to the machine body, a second transmission motor is installed on the side of the machine body, the output shaft end of the second transmission motor is fixedly connected to the clamping screw, and the clamping screw is symmetrically provided with a positive thread segment and a negative thread segment, and the positive thread segment and the negative thread segment are respectively connected to the two mold frames for transmission.

[0011] As a preferred technical solution of the present invention, a vibrating sand frame, a square shaft, a small square shaft, a transverse screw rod and a hollow rotating sleeve are rotatably installed in the mold frame, and the hollow rotating sleeve is driven by a transmission shaft, and a first bevel gear is installed on the hollow rotating sleeve and the square shaft, and the two first bevel gears are orthogonally meshed, and a synchronous toothed belt is connected to the transmission between the small square shaft and the transverse screw rod. The vibrating sand frame is rotatably installed with a wheel shaft, a longitudinal screw rod, a first rotating sleeve linked to the square shaft and a second rotating sleeve linked to the small square shaft, respectively, and a toothed large gear and a toothed small gear are respectively installed on the first rotating sleeve, and two symmetrically arranged meshing interruption areas are provided on the first rotating sleeve and at the position corresponding to the position between the toothed large gear and the toothed small gear. The center angle corresponding to the tooth meshing section on the gear is 180°, the center angle corresponding to the tooth meshing section of the toothless pinion is 120°, and the center angles corresponding to the two meshing interruption zones are both 30°. Two full-tooth gears are installed on the second rotating sleeve, and the two full-tooth gears are respectively meshed with the toothless large gear and the toothless small gear. A second bevel gear is installed on the wheel axle and the longitudinal screw rod, and the two second bevel gears are orthogonally meshed. The longitudinal screw rod is connected to the casting frame for transmission, and the first rotating sleeve is connected to the first elastic transmission belt for transmission, and the wheel axle and the synchronous shaft are both connected to the first elastic transmission belt for transmission, and the rotation connection between the transverse screw rod and the mold frame and the rotation connection between the longitudinal screw rod and the vibrating sand frame are both provided with a first torsion spring.

[0012] As a preferred technical solution of the present invention, the interior of the hollow rotating sleeve is fixed with a first synchronous square groove with both ends penetrating and slidably connected to the transmission shaft, the interior of the first rotating sleeve is fixed with a second synchronous square groove with both ends penetrating and slidably connected to the square shaft, and the interior of the second rotating sleeve is fixed with a third synchronous square groove with both ends penetrating and slidably connected to the small square shaft. The cross-sections of the first synchronous square groove, the second synchronous square groove, the third synchronous square groove, the transmission shaft, the square shaft and the small square shaft are all regular polygons.

[0013] As an optimal technical solution of the present invention, a turning shaft is installed on the back of the turning frame, and a gear sleeve is provided on the turning shaft, and a linkage sleeve is rotatably installed on the sand vibrating frame, and the linkage sleeve and the turning shaft are transmitted to each other, and the first elastic transmission belt and the second elastic transmission belt can be elastically stretched. A large square shaft is rotatably installed on the mold frame, and the interior of the linkage sleeve is fixedly provided with a fourth synchronous square groove with openings at both ends and slidingly connected to the large square shaft. The cross-sections of the fourth synchronous square groove and the large square shaft are both regular polygons, and the tail end of the large square shaft is installed with a turning gear, and the turning gear is meshed with the 90° turning tooth segment and the 45° turning tooth segment. The synchronous shaft and the gear sleeve are both installed with a synchronous gear, and the synchronous shaft is installed with a toothless bevel gear, and the sand throwing shaft is installed with a full-tooth bevel gear, and the toothless bevel gear is meshed with the full-tooth bevel gear. The rotation connection between the sand throwing shaft and the turning frame and the rotation connection between the large square shaft and the mold frame are both provided with a second torsion spring.

[0014] As a preferred technical solution of the present invention, a lifting frame is provided in the machine body, and a group of lifting push rods are installed between the lifting frame and the machine body. The sand feeding pipe and the negative pressure sand suction pipe are both installed on the lifting frame, and an upper connecting head is installed on the sand feeding pipe and the negative pressure sand suction pipe at the position corresponding to the two casting systems. A sand feeding joint is installed in the middle of the sand feeding pipe, and a negative pressure joint is installed in the middle of the negative pressure sand suction pipe. A lower connecting head adapted to be connected to the upper connecting head is installed on the mold frame, and an annular cavity connected to the hollow flow channel is fixedly opened on the flip frame, and a corrugated metal conduit is connected between the lower connecting head and the annular cavity.

[0015] As a preferred technical solution of the present invention, it is characterized in that: the transition layer is a nano-laminated layer of Al2O3 and TiN deposited alternately, and the functional layer is Fe 70 Ga 30 Alloy nanoparticles and vertically oriented graphene composite, the Fe 70 Ga 30 The particle size of the alloy nanoparticles is 50nm-80nm, the spacing between the vertically oriented graphene layers is 0.36nm-0.40nm, and Fe3C nanocrystals are embedded. The thermal insulation layer is a ZrO2 gradient ceramic containing a Y2O3 stabilizer. The output frequency of the magnetic field generator is 1kHz-20kHz, the magnetic field strength is 0.1T-0.5T, and the direction of the magnetic field forms an angle of 30°-60° with the surface of the casting mold.

[0016] As a preferred technical solution of the present invention, a toothless area is provided on the tooth plate between adjacent 90° flip tooth segments and 45° flip tooth segments, and between adjacent 45° flip tooth segments. The length of the toothless area is the same as the length of the 45° flip tooth segment. During the coated sand casting, the inner cavity of the casting mold is filled with material through the sand feeding pipe. After the coated sand casting is completed, the two casting molds move away from each other to a first distance. After reaching the first distance, the transmission shaft is continuously driven, and the casting mold is flipped downward by 90°. When the two casting molds move away from each other to the second distance, they remain flipped downward by 90° and continue to oscillate with variable frequency and variable stroke. The hollow flow channel is connected to the negative pressure sand suction pipe, and the magneto-vibration coating is coupled by the magnetic field generator to realize sand stripping. When the casting mold moves away from the first distance and the second distance, it first resets from the 90° flip state and then flips back and forth within 45°. The first distance is 3 times the width of the casting mold, and the second distance is 6 times the width of the casting mold.

[0017] As a preferred technical solution of the present invention, the production process of the coated sand casting production line based on the intelligent casting island includes the following steps:

[0018] SS01, mold closing and sand injection, the distance adjusting piece drives the two mold frames to close the mold, the sand feeding pipe injects the coated sand into the inner cavity of the casting mold under high pressure, and the electric heater heats it to 220℃-260℃ to make the coated sand quickly solidify and form;

[0019] SS02, mold opening and vibration stripping: the mold frame is first separated to the mold opening distance, and the solidified coated sand molded parts are removed for unloading. Then the mold frame is separated to the first distance, and the casting mold is flipped downward 90 degrees. The loose molding sand falls off under the action of gravity. The transmission shaft drives the casting frame to vibrate periodically. Combined with the multi-axial micro-vibration of the magnetic vibration coating, it strips the deeply adhered molding sand. The synchronous sand-stripping shaft rotates back and forth, using centrifugal force and vibration inertia to collaboratively clean the residual sand.

[0020] SS03, negative pressure sand suction and flip reset, the mold frame is separated to the second distance, the casting mold is kept flipped 90 degrees and continuously oscillated, combined with 45 degrees flip tooth segment slight oscillation to further clean the weakly adhered sand, the negative pressure sand suction pipe absorbs the residual sand through the hollow flow channel to ensure the cleanliness of the mold cavity;

[0021] SS04, reset and cycle, the mold frame resets to the initial position, the lifting frame adjusts the height of the sand feeding pipe and the negative pressure sand suction pipe, and prepares for the next cycle. The microcontroller coordinates the vibration frequency, magnetic field strength and flip angle throughout the process to achieve intelligent production.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The existing technology of air jet cleaning can only remove loose sand on the surface, and has poor effect on stripping deep-layer adhered molding sand in high-density solidified areas. The present invention achieves a technological breakthrough through the synergistic effect of magnetic vibration coating and multi-mode vibration. The Fe 70 Ga 30 Alloy nanoparticles produce periodic orientation of magnetic domains in an alternating magnetic field, stimulating micron-level multi-axial vibrations, penetrating deep into the interface between the molding sand and the mold, destroying the intermolecular forces, and enabling non-contact stripping of deeply adhered sand, solving the problem of insufficient energy penetration in traditional impact cleaning. The casting rack uses periodic cyclic motion of "high-frequency small stroke, reset, low-frequency large stroke, and intermittent" to match the molding sand adhesion gradient, and combines the centrifugal force generated by the reciprocating rotation of the sand-throwing shaft with the vibration inertia force composite field to form a three-dimensional synergistic effect of "vibration impact, rotational throw-off, and magnetically induced micro-vibration". Compared with existing technologies, the efficiency of deep sand stripping is improved.

[0024] 2. In the prior art, jet cleaning causes irregular scattering of sand, requiring manual cleaning and having a low recovery rate. The present invention achieves innovation through a closed-loop process of gravity pre-discharge, vibration stripping, and negative pressure adsorption. The casting mold flips downward 90° at the first distance, and gravity is used to make more than 80% of the loose molding sand fall naturally into the sand collecting cavity, reducing spillage pollution. At the second distance, it maintains a 90° flip, and cooperates with low-frequency and large-stroke oscillation to further discharge deep sand, reducing subsequent adsorption load. The hollow flow channel is connected to the negative pressure sand suction pipe, and slightly adhered sand is recovered by negative pressure adsorption in the intermittent stage. The sand recovery rate is improved, and no manual intervention is required throughout the process, reducing production costs. The toothless area design of the tooth plate enables the mold to form a "flip pause" rhythm when flipping back and forth at 45°, simulating the logic of manual tapping, avoiding vibration-induced sand suspension, and ensuring efficient and stable negative pressure adsorption.

[0025] 3. Traditional cleaning relies on concentrated energy impact, which can easily lead to local stress concentration and wear of the mold. The present invention achieves technological innovation through flexible transmission and layered force design. The elastic tensile properties of the first elastic transmission belt and the second elastic transmission belt can absorb the instantaneous impact force during the vibration of the casting frame and the rotation of the flip frame, avoiding mold wear caused by rigid transmission. The second torsion spring provides buffering when the flip gear engages to prevent the gear from overload and breakage. Compared with the existing technology, the mold wear rate is reduced, high frequency and low energy are used to achieve surface cleaning, low frequency and high energy are used to achieve deep cleaning, intermittent buffering is used to achieve stress release, avoiding damage to the mold caused by traditional single strong impact, and the non-contact stripping of the magneto-vibration coating does not require mechanical contact, further reducing physical wear and extending the life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a coated sand casting production line based on an intelligent casting island according to the present invention;

[0027] Figure 2Schematic diagram of the structure of the distance adjusting member and the lifting push rod of the present invention;

[0028] Figure 3 This is a schematic structural diagram of the sand delivery pipe and the negative pressure sand suction pipe of the present invention;

[0029] Figure 4 This is a schematic structural diagram of the second torsion spring and the 45° flipped tooth segment of the present invention;

[0030] Figure 5 It is a structural diagram of the mold frame and large square shaft of the present invention;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the local enlarged structure at A in the middle;

[0032] Figure 7 For the present invention Figure 5 Schematic diagram of the local enlarged structure at B in the middle;

[0033] Figure 8 This is a schematic structural diagram of the hollow rotating sleeve and the small square shaft of the present invention;

[0034] Figure 9 A schematic structural diagram of the casting frame and the second elastic transmission belt of the present invention;

[0035] Figure 10 Schematic diagram of the exploded structure of the tooth-missing bevel gear and the full-tooth bevel gear of the present invention;

[0036] Figure 11 It is a schematic diagram of the cross-sectional structure of the magneto-vibration coating of the present invention.

[0037] In the figure: 1. Machine body; 2. Sand feeding pipe; 3. Negative pressure sand suction pipe; 4. Pitch adjustment piece; 5. Transmission shaft; 6. Mould frame; 7. Tooth plate; 8. Magnetic field generator; 9. Casting frame; 10. Synchronous shaft; 11. Turning frame; 12. 90° turning tooth segment; 13. 45° turning tooth segment; 14. Sand throwing shaft; 15. Casting mould; 16. Magneto-vibration coating; 17. Transition layer; 18. Functional layer; 19. Insulation layer; 20. Box door; 21. Electric heater; 22. Vibrating sand frame; 23. Middle shaft; 24. Small shaft; 25. Horizontal screw; 26. Hollow rotating sleeve; 27. Axle; 28. Longitudinal screw; 29. First rotating sleeve; 30. Second rotating sleeve; 31. Toothless large gear; 32. Toothless small gear; 33. Full-tooth gear; 34. First elastic transmission belt; 35. First torsion spring; 36. Gear sleeve; 37. Linkage sleeve; 38. Second elastic transmission belt; 39. Large square shaft; 40. Flip gear; 41. Synchronous gear; 42. Toothless bevel gear; 43. Full-tooth bevel gear; 44. Second torsion spring; 45. Lifting frame; 46. Lifting push rod; 47. Upper connector; 48. Lower connector. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1 to 11 As shown, the present invention provides a coated sand casting production line based on an intelligent casting island, comprising a machine body 1, in which a sand feeding pipe 2, a negative pressure sand suction pipe 3, a distance adjusting member 4 and a rotatable transmission shaft 5 are respectively installed, and the distance adjusting member 4 is transmission-connected to two symmetrically arranged and spacing-adjustable mold frames 6, and both mold frames 6 are provided with a casting system; a microcontroller is installed on the end face of the machine body 1, a box door 20 is provided in the middle of the machine body 1, a sand collecting chamber with a top opening is provided in the machine body 1 and at a position corresponding to the bottom of the casting mold 15, a first transmission motor is installed on the side of the machine body 1, and a first The output shaft end of the transmission motor is fixedly connected to the transmission shaft 5; the microcontroller realizes intelligent coordinated control of the core components of the production line, thereby improving the automation level of the casting process; the box door 20 in the middle of the machine body 1 is designed to facilitate the unloading of casting molded parts; the sand collecting chamber below the casting mold 15 can directly collect the molding sand scattered during the demoulding process, reducing sand waste and reducing manual cleaning costs; the direct connection design between the first transmission motor and the transmission shaft 5 ensures high responsiveness of power transmission; after the two casting molds 15 are closed, compressed air is injected into the loose coated sand to heat and shape it.

[0040] A lifting frame 45 is provided in the machine body 1, and a group of lifting push rods 46 are installed between the lifting frame 45 and the machine body 1. The sand feeding pipe 2 and the negative pressure sand suction pipe 3 are both installed on the lifting frame 45. An upper connector 47 is installed on the sand feeding pipe 2 and the negative pressure sand suction pipe 3 and corresponding to the positions of the two casting systems. A sand feeding joint is installed in the middle of the sand feeding pipe 2, and a negative pressure joint is installed in the middle of the negative pressure sand suction pipe 3. A lower connector 48 adapted to be connected to the upper connector 47 is installed on the mold frame 6. An annular cavity connected to the hollow flow channel is fixedly opened on the flip frame 11, and the lower connector 48 is connected to the annular cavity. There is a corrugated metal conduit in the middle; the lifting frame 45 can flexibly adjust the height of the sand feeding pipe 2 and the negative pressure sand suction pipe 3 through the lifting push rod 46 to adapt to the sand injection and sand suction requirements of the casting mold 15; the quick docking design of the upper connector 47 and the lower connector 48, combined with the elastic tensile properties of the corrugated metal conduit, ensures that when the turning frame 11 moves back and forth with the casting frame 9, the sand material conveying pipeline or the sand suction pipeline always maintains a sealed connection with the hollow flow channel to avoid sand leakage; the sand feeding joint is connected to the high-pressure feeding equipment of the loose coated sand, and the negative pressure joint is connected to the external negative pressure vacuum cleaner.

[0041] The distance adjusting member 4 includes a clamping screw that is rotatably connected to the body 1, and a second transmission motor is installed on the side of the body 1. The output shaft end of the second transmission motor is fixedly connected to the clamping screw, and a positive thread segment and a negative thread segment are symmetrically arranged on the clamping screw. The positive thread segment and the negative thread segment are respectively connected to the two mold frames 6 for transmission. The clamping screw is driven to rotate by the second transmission motor, and the symmetrical design of the positive thread segment and the negative thread segment is utilized to realize synchronous and equidistant adjustment of the two mold frames 6. When the second transmission motor rotates forward, the two mold frames 6 approach each other and finally complete the mold closing. When the second transmission motor rotates forward, the two mold frames 6 move away from each other and finally complete the mold opening.

[0042] The casting system includes a gear plate 7 mounted on the machine body 1, a magnetic field generator 8 mounted on the machine body 1, a casting frame 9 that can be synchronously moved back and forth and left and right on the mold frame 6, and a synchronous shaft 10 that can periodically rotate forward and reverse. The synchronous shaft 10 is rotatably mounted on the casting frame 9; when the transmission shaft 5 is working, the reciprocating frequency and reciprocating stroke of the casting frame 9 change periodically; the mold frame 6 is respectively rotatably mounted with a vibrating sand frame 22, a square shaft 23, a small square shaft 24, a transverse screw rod 25 and a hollow rotating sleeve 26, which are driven by the transmission shaft 5; the interior of the hollow rotating sleeve 26 is fixed with a through-hole at both ends and connected to the transmission shaft 5 sliding connection of the first synchronous square groove; the hollow rotating sleeve 26 and the square shaft 23 are both equipped with a first bevel gear, and the two first bevel gears are orthogonally meshed; a synchronous toothed belt is connected between the small square shaft 24 and the transverse screw rod 25, and the vibration sand frame 22 is respectively rotatably installed with a wheel shaft 27, a longitudinal screw rod 28, a first rotating sleeve 29 linked to the square shaft 23, and a second rotating sleeve 30 linked to the small square shaft 24; the interior of the first rotating sleeve 29 is fixed with a second synchronous square groove with both ends penetrating and slidingly connected to the square shaft 23, and the interior of the second rotating sleeve 30 is fixed with both ends penetrating and slidingly connected to the small square shaft 24 The third synchronous square groove connected, the cross sections of the first synchronous square groove, the second synchronous square groove, the third synchronous square groove, the transmission shaft 5, the square shaft 23 and the small square shaft 24 are all regular polygons; the first rotating sleeve 29 is respectively mounted with a toothed large gear 31 and a toothed small gear 32, and the first rotating sleeve 29 is provided with two symmetrically arranged meshing interruption areas corresponding to the positions between the toothed large gear 31 and the toothed small gear 32. The center angle corresponding to the toothed meshing section on the toothed large gear 31 is 180°, and the center angle corresponding to the toothed meshing section on the toothed small gear 32 is 120°. The center angles corresponding to the two meshing interruption areas are both 30 °; Two toothed gears 33 are installed on the second rotary sleeve 30, and the two toothed gears 33 are respectively meshed with the toothless large gear 31 and the toothless small gear 32; the wheel shaft 27 and the longitudinal screw rod 28 are mounted with a second bevel gear, and the two second bevel gears are orthogonally meshed. The longitudinal screw rod 28 is transmission-connected to the casting frame 9, and the first rotary sleeve 29 is transmission-connected with a first elastic transmission belt 34. The wheel shaft 27 and the synchronous shaft 10 are transmission-connected with the first elastic transmission belt 34, and the rotation connection between the transverse screw rod 25 and the mold frame 6 and the rotation connection between the longitudinal screw rod 28 and the vibrating sand frame 22 are provided with a first torsion spring 35.

[0043] The transmission shaft 5 is driven to rotate by the first transmission motor and is slidably connected to the transmission shaft 5 through the first synchronous square groove inside the hollow rotating sleeve 26, so as to realize the synchronous rotation of the hollow rotating sleeve 26 and the transmission shaft 5. The hollow rotating sleeve 26 drives the square shaft 23 to rotate through the first bevel gear, and the square shaft 23 further drives the first rotating sleeve 29 to rotate synchronously through the second synchronous square groove. The first rotating sleeve 29 is integrated with a toothless large gear 31, a toothless small gear 32 and two 30° meshing interruption areas, forming a periodic meshing and interrupted transmission logic with the two full-tooth gears 33 on the second rotating sleeve 30. Edit: When the first rotary sleeve 29 rotates, the 180° toothed segment of the toothless large gear 31 meshes with the full-tooth gear 33, driving the second rotary sleeve 30 to rotate at high speed. This state corresponds to the high-frequency stage of reciprocating vibration. After the meshing of the toothless large gear 31 is completed, it enters the 30° meshing interruption zone. The second rotary sleeve 30 loses power and relies on the reset force of the first torsion spring 35 to make the longitudinal screw rod 28 rotate in the opposite direction, corresponding to the "reset stage". Subsequently, the 120° toothed segment of the toothless small gear 32 meshes with the full-tooth gear 33, driving the second rotary sleeve 30 to rotate at low speed, corresponding to the "low-frequency stage of reciprocating vibration". After the toothless pinion 32 is engaged, it enters the 30° meshing interruption zone again, and the second rotary sleeve 30 is reset again corresponding to the "intermittent stage". The periodic rotation of the second rotary sleeve 30 is transmitted to the longitudinal screw rod 28 through the wheel shaft 27. The forward and reverse rotation of the longitudinal screw rod 28 drives the casting frame 9 to reciprocate back and forth on the mold frame 6. At the same time, the small square shaft 24 drives the transverse screw rod 25 to rotate through the synchronous toothed belt. The forward and reverse rotation of the transverse screw rod 25 drives the casting frame 9 to reciprocate left and right. Due to the meshing period of the toothless gear set, the reciprocating frequency of the casting frame 9 is determined by the length of the meshing section. The reciprocating stroke is determined by the number of rotations of the longitudinal screw 28 and the transverse screw 25, presenting a periodic cycle of "high-frequency small stroke to reset to low-frequency large stroke to intermittent"; the first rotary sleeve 29 simultaneously links the wheel shaft 27 and the synchronous shaft 10 through the first elastic transmission belt 34. During the interruption of the engagement of the toothless gear set, the rotation direction of the wheel shaft 27 is affected by the reset force of the first torsion spring 35. Through the elastic buffering of the first elastic transmission belt 34, the synchronous shaft 10 is driven by the wheel shaft 27 to achieve periodic alternating forward and reverse rotation, thereby ensuring the uniform distribution and density of the sand material in the mold cavity.

[0044] When the sand is injected into the inner cavity of the casting mold 15 under high pressure or during the mold closing stage, the transmission shaft 5 remains stationary; during the cleaning process of the molding sand in the casting mold 15, the casting rack 9 can achieve the following technical effects through the periodic cyclic motion of "high frequency small stroke, reset, low frequency large stroke, intermittent"; the adhesion state of the molding sand in the mold varies with the degree of solidification, including surface loose sand, deep dense sand and local strong adhesion sand, and the periodic motion of the casting rack 9 accurately matches this feature: High frequency small stroke stage: The micro-impact generated by the short-amplitude high-frequency vibration can efficiently peel off the loose molding sand on the mold surface to avoid loose Loose sand is scattered irregularly due to violent vibration; reset stage: the casting frame 9 is quickly reset to the initial position under the action of the first torsion spring 35, providing space margin for subsequent large-stroke vibration, and at the same time using inertia to make the loose sand that has been stripped fall naturally into the sand collecting cavity; low-frequency large-stroke stage: the strong impact energy generated by the long-amplitude low-frequency vibration can penetrate the deep molding sand, destroy its strong adhesion with the mold interface, and strip off the residual compact sand; intermittent stage: when the vibration is paused, the sand particles are fully settled under the action of gravity, avoiding the suspension of sand particles caused by continuous vibration, and at the same time providing a stable sand suction environment for the negative pressure sand suction pipe 3.

[0045] Traditional cleaning methods are prone to causing local wear or deformation of the mold due to energy concentration, while periodic motion achieves a gradient distribution of vibration energy through the energy release mode of "high frequency and small energy, low frequency and large energy, and intermittent buffering". The synergy between periodic motion and the negative pressure sand suction pipe 3 forms a closed-loop cleaning process of "vibration stripping, gravity sedimentation, and negative pressure adsorption": high frequency and small strokes quickly strip loose sand, shortening the cleaning time; after low frequency and large strokes strip compact sand, negative pressure adsorption in the intermittent stage can accurately recover residual sand; the overall process does not require manual intervention, which improves cleaning efficiency and reduces the risk of sand contamination caused by manual operation.

[0046] A turning frame 11 is installed on the casting frame 9, and two symmetrically arranged 90° turning tooth segments 12 are provided on the tooth plate 7 for driving the turning frame 1190° to turn, and a group of 45° turning tooth segments 13 are provided at intervals corresponding to the positions between the two 90° turning tooth segments 12 on the tooth plate 7; the first 90° turning tooth segment 12 is used to pre-exclude the molding sand in the casting mold 15 before the strong cleaning state to reduce the irregular throwing rate of the molding sand; the second 90° turning tooth segment 12 is used for forced cleaning and discharge of the molding sand in the casting mold 15; a sand throwing shaft 14 driven by the synchronous shaft 10 is rotatably installed in the turning frame 11, and a casting mold 15 is installed on the sand throwing shaft 14, and a hollow flow channel connected to the inner cavity of the casting mold 15 is provided on the sand throwing shaft 14; a turning shaft is installed on the back of the turning frame 11, and a gear sleeve 36 is rotatably provided on the turning shaft, and a linkage shaft sleeve 37 is rotatably installed on the sand vibrating frame 22. A second elastic transmission belt 38 is connected to the transmission between 37 and the flip shaft, and the first elastic transmission belt 34 and the second elastic transmission belt 38 can be elastically stretched. A large square shaft 39 is rotatably installed on the mold frame 6, and a fourth synchronous square groove with openings at both ends is fixedly opened inside the linkage sleeve 37 and is slidably connected to the large square shaft 39. The cross sections of the fourth synchronous square groove and the large square shaft 39 are both regular polygons; a flip gear 40 is installed at the tail end of the large square shaft 39, and the flip gear 40 is meshed with the 90° flip tooth segment 12 and the 45° flip tooth segment 13. A synchronous gear 41 is installed on the synchronous shaft 10 and the gear sleeve 36, and a toothless bevel gear 42 is installed on the synchronous shaft 10. A full-tooth bevel gear 43 is installed on the sand-throwing shaft 14, and the toothless bevel gear 42 is meshed with the full-tooth bevel gear 43. The rotation connection between the sand-throwing shaft 14 and the flip frame 11 and the rotation connection between the large square shaft 39 and the mold frame 6 are both provided with a second torsion spring 44;

[0047] The beneficial effect of adopting the above scheme is that the coordinated design of the flip gear 40, the 90° flip tooth segment 12, and the 45° flip tooth segment 13 is the core mechanical structure for realizing "staged precise demoulding". Its unique role is reflected in three dimensions: precise angle control, staged adaptation of action to the sand mold state, and synergistic efficiency with the vibration negative pressure system: the 90° flip tooth segment 12 realizes the "double insurance" of "gravity-assisted pre-discharge" and "forced cleaning" through large-angle flipping; the first 90° flip tooth segment 12 drives the mold to flip down 90° when the spacing between the casting molds 15 reaches a first distance, and uses gravity to make the loose molding sand fall off naturally, thereby reducing the spillage rate; the second 90° flip tooth segment 12 maintains a 90° downward flip state when the spacing between the casting molds 15 reaches a second distance, and cooperates with low-frequency large-stroke oscillation and micro-vibration of the magneto-induced vibration coating 16 to peel off deep and strongly adhered sand; the 45° flip tooth segment 13 processes the residual sand through micro-oscillation. When the spacing between the casting molds 15 is between the first and second distances, the mold is turned down 90°. At the second distance, the turning frame 11 is driven to turn back and forth within 45°, combined with the "turn and pause" rhythm of the toothless area, simulating the manual "tap, wait, and tap again" logic, and using alternating stress and magnetic micro-vibration to peel off weakly adhered residual sand to avoid sand suspension; the turning gear 40 serves as the core hub, and realizes high-fidelity angle transmission through precise engagement with the 90° turning tooth segment 12 and the 45° turning tooth segment 13. At the same time, the second torsion spring 44 at the connection with the large square shaft 39 can buffer instantaneous impact to avoid gear overload and fracture. The three work together to form a "gravity-dominated, vibration-assisted, and micro-oscillation" layered cleaning logic; the inner cavity of the casting mold 15 is coated with a magnetic vibration coating 16, and the magnetic vibration coating 16 excites multi-axial micro-vibration through the alternating magnetic field generated by the magnetic field generator 8 to achieve the peeling of the molding sand and the casting mold 15; the magnetic vibration coating 16 includes a transition layer 17, a functional layer 18 and a thermal insulation layer 19 arranged in sequence from the inside to the outside.

[0048] The transition layer 17 is a nano-layer of Al2O3 and TiN deposited alternately, and the functional layer 18 is made of Fe 70 Ga 30 Alloy nanoparticles and vertically oriented graphene composite, Fe 70 Ga 30 The particle size of the alloy nanoparticles is 70nm; the spacing between the vertically oriented graphene layers is 0.38nm, and Fe3C nanocrystals are embedded; the thermal insulation layer 19 is a ZrO2 gradient ceramic containing an Al2O3 stabilizer; the output frequency of the magnetic field generator 8 is 1kHz-20kHz, and the magnetic field strength is 0.1T-0.5T; the magnetic field direction of the magnetic field generator 8 is at a 45° angle to the surface of the casting mold 15; an electric heater 21 is provided in the casting mold 15 to dry and self-strip the molding sand, and the heating temperature of the electric heater 21 is 245°C.

[0049] The reciprocating rotation of the sand throwing shaft 14 and the periodic vibration of the casting frame 9 form a "rotational vibration" coupled motion; the reciprocating rotation of the sand throwing shaft 14 is driven by the synchronous shaft 10, and the alternating forward and reverse rotation of the synchronous shaft 10 is controlled by the system, and finally the periodic reciprocating of "forward, reverse, forward" of the sand throwing shaft 14 is realized, which is dynamically matched with the vibration frequency of the "high frequency small stroke, low frequency large stroke" of the casting frame 9; in the cleaning stage, the centrifugal force generated by the rotation of the sand throwing shaft 14 and the vibration inertia force form a composite force field: when the high frequency small stroke vibrates, the small centrifugal force and the micro The amplitude inertial force cooperates to peel off the loose molding sand; during low-frequency and large-stroke vibration, the large centrifugal force and the strong inertial force are superimposed, and the deep molding sand bonding interface is destroyed through the dual effects of "rotational throwing and vibration impact"; at the same time, the hollow flow channel inside the sand-throwing shaft 14 forms a "dynamic flow channel" as it rotates: in addition, the rotation of the sand-throwing shaft 14 exposes each area of the mold surface to the optimal action angle of the magnetic field generator 8 in turn, and the multi-axial micro-vibration of the magneto-induced vibration coating 16 forms a dynamic angle with the rotation tangent direction, generating a "circumferential-radial-axial" composite vibration. The 90° flip tooth segment 12 and the 45° flip tooth segment 13 are respectively provided with a tooth-free area on the tooth plate 7 and the positions between the two 45° flip tooth segments 13. The length of the tooth-free area is the same as the length of the 45° flip tooth segment 13. When the coated sand is cast, the inner cavity of the casting mold 15 is filled with material through the sand feeding pipe 2. After the coated sand is cast, the two casting molds 15 move away from each other to a first distance. After reaching the first distance, the transmission shaft 5 is continuously driven to cast the coated sand. The mold 15 is flipped downward 90°. When the two casting molds 15 are away from each other to the second distance, they are kept flipped downward 90° and continue to oscillate with variable frequency and variable stroke. The hollow flow channel is connected to the negative pressure sand suction tube 3. The magneto-vibration coating 16 is coupled with the magnetic field generator 8 to realize the stripping of the molding sand. When the casting mold 15 is away from the first distance and the second distance, it is first reset from the 90° flipped state and then flipped back and forth within 45°. The first distance is 3 times the width of the casting mold 15, and the second distance is 6 times the width of the casting mold 15.

[0050] The magneto-vibration coating 16 excites multi-axial micro-vibration through the alternating magnetic field of the magnetic field generator 8, causing micron-level separation between the molding sand and the mold interface, achieving non-contact and efficient peeling; the transition layer 17 enhances the bonding between the coating and the mold substrate, and the functional layer 18 improves the vibration uniformity through the triple mechanism of "particle vibration, graphene vibration guidance, and embedded Fe3C nanocrystal reinforcement". The thermal insulation layer 19 blocks the heat of the mold from diffusing to the coating, ensuring that the sand mold solidifies quickly and the mold temperature is stable when heated by the electric heater 21; the core principle of the magneto-vibration coating 16 exciting multi-axial micro-vibration through the alternating magnetic field of the magnetic field generator 8 lies in the synergistic effect of the magnetostrictive effect of the functional layer 18 material and the composite structure, combined with the precise control of the magnetic field parameters: the Fe 70 Ga 30Alloy nanoparticles have a significant magnetostrictive effect. When an alternating magnetic field is applied, the internal magnetic domains are periodically oriented with the direction and intensity of the magnetic field, causing the material to stretch and vibrate, and it can respond efficiently under low magnetic fields. The vertically oriented graphene acts as a vibration-guiding skeleton, and the Fe 70 Ga 30 The one-dimensional stretching strain along the magnetic field direction is transferred to the normal direction, and combined with the Fe3C nanocrystals embedded between the layers, the continuous strain is converted into discrete high-frequency multi-axial micro-vibrations.

[0051] The production process of the coated sand casting production line based on the intelligent casting island includes the following steps:

[0052] SS01, mold closing and sand injection, the distance adjusting member 4 drives the two mold frames 6 to close the mold, the sand feeding pipe 2 injects the coated sand into the inner cavity of the casting mold 15 under high pressure, and the electric heater 21 heats it to 245℃ to make the coated sand quickly solidify and form;

[0053] SS02, mold opening and vibration stripping: the mold frame 6 is first separated to the mold opening distance, and the solidified coated sand molded parts are removed for unloading. Then the mold frame 6 is separated to the first distance, and the casting mold 15 is turned downward 90 degrees. The loose molding sand falls off under the action of gravity. The transmission shaft 5 drives the casting frame 9 to vibrate periodically. Combined with the multi-axial micro-vibration of the magnetic vibration coating 16, the deeply adhered molding sand is stripped. The synchronous sand-stripping shaft 14 rotates back and forth, and the residual sand is cleaned by the combined use of centrifugal force and vibration inertia force.

[0054] SS03, negative pressure sand suction and flip reset, the mold frame 6 is separated to the second distance, the casting mold 15 is kept flipped 90 degrees and continuously oscillated, combined with the 45-degree flip tooth segment 13 slight oscillation, to further clean the weakly adhered sand, the negative pressure sand suction pipe 3 absorbs the residual sand through the hollow flow channel to ensure the cleanliness of the mold cavity;

[0055] SS04, reset and cycle, the mold frame 6 is reset to the initial position, the lifting frame 45 adjusts the height of the sand feeding pipe 2 and the negative pressure sand suction pipe 3, and prepares for the next cycle. The microcontroller coordinates the vibration frequency, magnetic field strength and flip angle throughout the process to realize intelligent production.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The coated sand casting production line based on the intelligent casting island includes a machine body, characterized by: The machine body is equipped with a sand feeding pipe, a negative pressure sand suction pipe, a distance adjusting piece and a rotatable transmission shaft. The distance adjusting piece is connected to two symmetrically arranged mold frames with adjustable spacing. Both mold frames are equipped with a casting system. The casting system includes a tooth plate installed on the machine body, a magnetic field generator installed on the machine body, a casting frame that can synchronously move back and forth and left and right on the mold frame, and a synchronous shaft that can periodically alternate forward and reverse. The synchronous shaft is rotatably installed on the casting frame. When the transmission shaft is working, the reciprocating frequency and reciprocating stroke of the casting frame change periodically. A turning frame is installed on the casting frame. Two symmetrically arranged 90° turning tooth segments are provided on the tooth plate and are used to drive the turning frame to turn 90°. A group of 45° turning tooth segments are provided at intervals at positions corresponding to the two 90° turning tooth segments on the tooth plate. A sand throwing shaft driven by the synchronous shaft is rotatably installed in the turning frame. A casting mold is installed on the sand throwing shaft. The sand throwing shaft is provided with a hollow flow channel connected to the inner cavity of the casting mold. The inner cavity of the casting mold is coated with a magneto-vibration coating. The magneto-vibration coating excites multi-axial micro-vibration through an alternating magnetic field to achieve the separation of the molding sand and the casting mold. The magnetic vibration coating comprises a transition layer, a functional layer and a heat insulation layer arranged in sequence from the inside to the outside; The sand vibrating frame, the square shaft, the small square shaft, the transverse screw and the hollow rotating sleeve are rotatably installed in the mold frame, and the hollow rotating sleeve is driven by the transmission shaft. The first bevel gear is installed on the hollow rotating sleeve and the square shaft, and the two first bevel gears are orthogonally meshed. A synchronous toothed belt is connected to the transmission between the small square shaft and the transverse screw. The sand vibrating frame is rotatably installed with a wheel shaft, a longitudinal screw, a first rotating sleeve linked to the square shaft and a second rotating sleeve linked to the small square shaft, respectively. A toothed large gear and a toothed small gear are respectively installed on the first rotating sleeve. Two symmetrically arranged meshing interruption areas are provided on the first rotating sleeve and at the positions corresponding to the positions between the toothed large gear and the toothed small gear. There are teeth meshing on the toothed large gear. The center angle corresponding to the segment is 180°, the center angle corresponding to the toothed meshing segment of the toothless pinion is 120°, and the center angles corresponding to the two meshing interruption zones are both 30°. Two full-tooth gears are installed on the second rotating sleeve, and the two full-tooth gears are respectively meshed with the toothless large gear and the toothless pinion. A second bevel gear is installed on the wheel axle and the longitudinal screw rod, and the two second bevel gears are orthogonally meshed. The longitudinal screw rod is connected to the casting frame for transmission, and the first rotating sleeve is connected to the first elastic transmission belt for transmission, and the wheel axle and the synchronous shaft are both connected to the first elastic transmission belt for transmission, and the rotation connection between the transverse screw rod and the mold frame and the rotation connection between the longitudinal screw rod and the vibrating sand frame are both provided with a first torsion spring.

2. The coated sand casting production line based on the intelligent casting island according to claim 1 is characterized in that: A microcontroller is installed on the end face of the body, a box door is provided in the middle of the body, a sand collecting chamber with a top opening is provided in the body and at a position corresponding to the bottom of the casting mold, a first transmission motor is installed on the side of the body, and the output shaft end of the first transmission motor is fixedly connected to the transmission shaft, and an electric heater for drying and self-peeling the molding sand is provided in the casting mold, and the heating temperature of the electric heater is 220°C-260°C.

3. The coated sand casting production line based on the intelligent casting island according to claim 1 is characterized in that: The distance adjusting part includes a clamping screw that is rotatably connected to the machine body, a second transmission motor is installed on the side of the machine body, the output shaft end of the second transmission motor is fixedly connected to the clamping screw, and a positive thread segment and a negative thread segment are symmetrically arranged on the clamping screw, and the positive thread segment and the negative thread segment are respectively connected to the two mold frames for transmission.

4. The coated sand casting production line based on the intelligent casting island according to claim 1 is characterized in that: The interior of the hollow rotating sleeve is fixed with a first synchronous square groove with both ends penetrating therethrough and slidably connected to the transmission shaft; the interior of the first rotating sleeve is fixed with a second synchronous square groove with both ends penetrating therethrough and slidably connected to the square shaft; the interior of the second rotating sleeve is fixed with a third synchronous square groove with both ends penetrating therethrough and slidably connected to the small square shaft; the cross-sections of the first synchronous square groove, the second synchronous square groove, the third synchronous square groove, the transmission shaft, the square shaft and the small square shaft are all regular polygons.

5. The coated sand casting production line based on the intelligent casting island according to claim 4 is characterized in that: The rear end of the described turning frame is provided with a turning shaft, and the rotating sleeve of the turning shaft is provided with a gear sleeve, and the vibration sand frame is rotatably provided with a linkage sleeve, and the linkage sleeve and the turning shaft are transmitted to each other, and the first elastic transmission belt is elastically stretched. A large square shaft is rotatably installed on the described mold frame, and the interior of the linkage sleeve is fixed with a fourth synchronous square groove with openings at both ends and slidingly connected to the large square shaft. The cross sections of the fourth synchronous square groove and the large square shaft are both regular polygons, and the tail end of the large square shaft is provided with a turning gear, and the turning gear is meshed with the 90° turning tooth segment and the 45° turning tooth segment. The synchronous shaft and the gear sleeve are both provided with a synchronous gear, and the synchronous shaft is provided with a toothless bevel gear, and the sand throwing shaft is provided with a full-tooth bevel gear, and the toothless bevel gear is meshed with the full-tooth bevel gear. The rotation connection between the sand throwing shaft and the turning frame and the rotation connection between the large square shaft and the mold frame are both provided with a second torsion spring.

6. The coated sand casting production line based on the intelligent casting island according to claim 1 is characterized in that: A lifting frame is provided in the machine body, and a group of lifting push rods are installed between the lifting frame and the machine body. The sand feeding pipe and the negative pressure sand suction pipe are both installed on the lifting frame. An upper connecting head is installed on the sand feeding pipe and the negative pressure sand suction pipe at the position corresponding to the two casting systems. A sand feeding joint is installed in the middle of the sand feeding pipe, and a negative pressure joint is installed in the middle of the negative pressure sand suction pipe. A lower connecting head adapted to be connected to the upper connecting head is installed on the mold frame, and an annular cavity connected to the hollow flow channel is fixedly opened on the flip frame, and a corrugated metal conduit is connected between the lower connecting head and the annular cavity.

7. The coated sand casting production line based on the intelligent casting island according to claim 1 is characterized in that: The transition layer is a nano-layer of Al2O3 and TiN deposited alternately, and the functional layer is composed of Fe 70 Ga 30 Alloy nanoparticles and vertically oriented graphene composite, the Fe 70 Ga 30 The particle size of the alloy nanoparticles is 50nm-80nm, the spacing between the vertically oriented graphene layers is 0.36nm-0.40nm, and Fe3C nanocrystals are embedded. The thermal insulation layer is a ZrO2 gradient ceramic containing a Y2O3 stabilizer. The output frequency of the magnetic field generator is 1kHz-20kHz, the magnetic field strength is 0.1T-0.5T, and the direction of the magnetic field forms an angle of 30°-60° with the surface of the casting mold.

8. The coated sand casting production line based on the intelligent casting island according to claim 1 is characterized in that: The tooth plate is provided with a toothless area between adjacent 90° flip tooth segments and 45° flip tooth segments, as well as between adjacent 45° flip tooth segments. The length of the toothless area is the same as the length of the 45° flip tooth segment. During coated sand casting, the inner cavity of the casting mold is filled with material through the sand feeding pipe. After the coated sand casting is completed, the two casting molds move away from each other to a first distance. After reaching the first distance, the transmission shaft is continuously driven, and the casting mold is flipped downward 90°. When the two casting molds move away from each other to the second distance, they remain flipped downward 90° and continue to oscillate with variable frequency and variable stroke. The hollow flow channel is connected to the negative pressure sand suction pipe. The magneto-vibration coating is coupled with the magnetic field generator to realize sand stripping. When the casting mold moves away from the first distance and the second distance, it is first reset from the 90° flip state and then flipped back and forth within 45°. The first distance is 3 times the width of the casting mold, and the second distance is 6 times the width of the casting mold.

9. The production process of the coated sand casting production line based on the intelligent casting island according to any one of claims 1 to 8, characterized in that: The following steps are involved: SS01, mold closing and sand injection, the distance adjusting piece drives the two mold frames to close the mold, the sand feeding pipe injects the coated sand into the inner cavity of the casting mold under high pressure, and the electric heater heats it to 220℃-260℃ to make the coated sand quickly solidify and form; SS02, mold opening and vibration stripping: the mold frame is first separated to the mold opening distance, and the solidified coated sand molded parts are removed for unloading. Then the mold frame is separated to the first distance, and the casting mold is flipped downward 90 degrees. The loose molding sand falls off under the action of gravity. The transmission shaft drives the casting frame to vibrate periodically. Combined with the multi-axial micro-vibration of the magnetic vibration coating, it strips the deeply adhered molding sand. The synchronous sand-stripping shaft rotates back and forth, using centrifugal force and vibration inertia to collaboratively clean the residual sand. SS03, negative pressure sand suction and flip reset, the mold frame is separated to the second distance, the casting mold is kept flipped 90 degrees and continuously oscillated, combined with 45 degrees flip tooth segment slight oscillation to further clean the weakly adhered sand, the negative pressure sand suction pipe absorbs the residual sand through the hollow flow channel to ensure the cleanliness of the mold cavity; SS04, reset and cycle, the mold frame resets to the initial position, the lifting frame adjusts the height of the sand feeding pipe and the negative pressure sand suction pipe, and prepares for the next cycle. The microcontroller coordinates the vibration frequency, magnetic field strength and flip angle throughout the process to achieve intelligent production.

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