Lost foam casting sand processing device

Abstract

The invention relates to the technical field of foundry sand processing, and discloses a lost foam casting sand processing device, comprising a processing table, wherein a screening plate and a magnetic separation plate are arranged above the processing table, the screening plate is located on one side below the magnetic separation plate, a lower material bin is arranged above the top of the magnetic separation plate, the lower material bin is fixedly installed on the top of the processing table, the outlet end of the lower material bin is aligned with the top end of the magnetic separation plate, two electromagnetic rods are placed on the side plates of the magnetic separation plate, the two electromagnetic rods span the surface of the magnetic separation plate, a vibration component is used to drive the magnetic separation plate and the screening plate to vibrate at the same time, and adjustment components that enable the magnetic separation plate to tilt in the opposite direction are arranged on both sides of the magnetic separation plate, the adjustment component changes the inclination angle of the magnetic separation plate so that the outlet end thereof can face different directions, and after the electromagnetic rods are saturated with adsorption, the magnetic separation plate is turned to make impurities flow to a collection area, and impurities on the surface of the electromagnetic rods are regularly cleaned to ensure that the adsorption capacity thereof is always in a high-efficiency state, thereby improving production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of foundry sand processing, and in particular relates to a lost foam casting sand processing device. Background Art

[0002] Lost foam casting, also known as full-mold casting, is a new casting method that uses dry sand without adhesive and vacuum technology to cast foam plastic molds. Foam models with similar size and shape to the casting are bonded together into a model cluster, coated with refractory coating and dried, then buried in dry quartz sand and vibrated to shape. Pour under negative pressure, causing the model to vaporize and liquid metal to occupy the model position. After solidification and cooling, the casting is formed.

[0003] In the lost foam casting process, molding sand plays a vital role. It not only needs to fill the mold to form the outer contour of the casting, but also needs to withstand the impact and heat of the molten metal during the pouring process, and be able to be smoothly removed from the casting after the casting is cooled. Therefore, the main function of the molding sand processing device is to screen, cool, regenerate, and mix the molding sand to ensure that the quality and performance of the molding sand meet the requirements of lost foam casting.

[0004] In the existing technology, the molding sand after casting is prone to form agglomerates due to moisture, high temperature or mechanical extrusion. When it directly enters the magnetic separation stage, the ferromagnetic impurities inside the agglomerates are wrapped and cannot be fully adsorbed by the electromagnetic rods. The residual impurities will reduce the surface quality of the casting. At the same time, when the uncrushed agglomerated molding sand flows on the screening plate, large particle clumps are easily stuck in the sieve holes, resulting in a decrease in screening efficiency, and the fine sand and coarse sand are unevenly mixed, affecting the recycling performance of the molding sand.

[0005] To this end, the present invention provides a lost foam casting sand processing device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art: solve at least one technical problem raised in the background technology.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the lost foam casting sand processing device described in the present invention includes a processing table, a guard plate is symmetrically fixedly connected to the top of the processing table, a condensation plate is provided on one side of the guard plate, a screening plate and a magnetic separation plate are provided above the processing table, the screening plate is located on one side below the magnetic separation plate, a lower material bin is provided above the top of the magnetic separation plate, the lower material bin is fixedly installed on the top of the processing table, the outlet end of the lower material bin is aligned with the top of the magnetic separation plate, two electromagnetic rods are placed on the side plates of the magnetic separation plate, the two electromagnetic rods span the surface of the magnetic separation plate, the surface of the magnetic separation plate is provided with a loosening component for evenly breaking up the molding sand, a vibration component is provided at the bottom of the magnetic separation plate, the vibration component is used to drive the magnetic separation plate and the screening plate to vibrate at the same time, and adjustment components are provided on both sides of the magnetic separation plate to enable the magnetic separation plate to tilt in the opposite direction.

[0008] Preferably, the top of the processing table is fixedly connected to a support table, the top of the support table is fixedly connected to a hinged seat, the shaft of the hinged seat is fixedly connected to the centers of both sides of the magnetic separation plate, the excitation assembly includes a rotating rod, the outer wall of the rotating rod is symmetrically fixedly connected to an arc-shaped fan plate, the outer side of the arc-shaped fan plate is in contact with the bottom of one end of the magnetic separation plate, and one end of the rotating rod is fixedly connected to a motor.

[0009] Preferably, the loose component includes two rotating shafts, the outer walls of the two rotating shafts are fixedly connected to the scrambler, the rotating shafts are rotatably connected to the inner walls of the side plates of the magnetic separator and span the surface of the magnetic separator, the outer walls of the two ends of the two rotating shafts are fixedly connected to transmission rings, and the outer walls of the transmission rings are connected with transmission belts, and a rotating component for driving the scrambler to rotate is provided on the outer side of one of the rotating shafts.

[0010] Preferably, the rotation assembly includes two gears, the arc-shaped fan plates are fixedly installed at both ends of one of the rotating shafts, the top of the support platform is symmetrically fixedly connected with fixed rods, the top of the fixed rods are fixedly connected with arc-shaped rack plates, and the teeth of the gears can engage with the teeth of the arc-shaped rack plates.

[0011] Preferably, connecting ropes are fixedly connected on both sides of the inner wall of one end of the magnetic dividing plate, and the bottoms of the connecting ropes are fixedly connected to the weight blocks. The bottom of the other end of the magnetic dividing plate is symmetrically fixedly connected to a torsion spring 1, and the end of the torsion spring 1 away from the magnetic dividing plate is fixedly connected to one side of the hinged seat.

[0012] Preferably, a multi-stage arc-shaped telescopic rod is symmetrically fixedly connected to one side of the articulated seat, and one end of the multi-stage arc-shaped telescopic rod away from the articulated seat is fixedly connected to a sleeve rod ring, the outer walls of both ends of the rotating rod are fixedly connected to the inner wall of the sleeve rod ring, the motor is fixedly installed on one side of the sleeve rod ring, and a material collection box is provided on the top of the support platform.

[0013] Preferably, the surface of the screen plate is evenly arranged with screen hole 1 and screen hole 2, the aperture diameter of screen hole 1 is smaller than the aperture diameter of screen hole 2, and a bearing seat is symmetrically fixed on the top of the processing table, and the inner wall of the bearing seat is rotatably connected to the center of both sides of the screen plate.

[0014] Preferably, the excitation assembly also includes a connecting rod, which is fixedly connected between the inner walls of the other end of the magnetic separation plate. The bottom of the connecting rod is fixedly connected with a downward pressure ball, and the side of the screening plate is fixedly connected with a side connecting plate. A torsion spring 2 is fixedly connected between the bottom of the side connecting plate and one side of the bearing seat.

[0015] Preferably, the top of the processing table is symmetrically fixedly connected to the limiting table, and parking wheels are fixedly connected to both sides of one end of the screening plate away from the side connecting plate.

[0016] Preferably, collection box 1, collection box 2 and collection box 3 are provided on the top of the processing table, collection box 1 is located below the bottom outlet of the sieve plate, collection box 2 is located below sieve hole 2, and collection box 3 is located below sieve hole 1.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The lost foam casting sand processing device described in the present invention disperses the agglomerated or agglomerated sand particles through loose components to restore their fluidity, thereby avoiding the reduction of magnetic separation and screening efficiency due to agglomeration of the sand in subsequent processing. The evenly dispersed sand is easier to contact with the electromagnetic rod, ensuring that ferromagnetic impurities are fully adsorbed. The broken-up sand is more evenly distributed on the screening plate, reducing the risk of large particles clogging the screen.

[0019] 2. The lost foam casting sand processing device described in the present invention drives the magnetic separator and the screening plate to vibrate through the vibration component, so that the molding sand flows in a shaking form on the inclined surface to avoid accumulation or stagnation, ensure that the molding sand is evenly distributed on the magnetic separator and the screening plate, improve the processing efficiency, and vibrate to make the molding sand fully contact with the electromagnetic rod, thereby enhancing the adsorption capacity of the magnetic field on ferromagnetic impurities. Continuous vibration prevents the molding sand from accumulating on the screening plate, ensuring that the sieve holes are unobstructed.

[0020] 3. The lost foam casting sand processing device described in the present invention changes the inclination angle of the magnetic separation plate by adjusting the components so that its outlet end can face different directions. After the electromagnetic rod is saturated with adsorption, the magnetic separation plate is turned to allow impurities to flow to the collection area. By regularly cleaning impurities on the surface of the electromagnetic rod, its adsorption capacity is ensured to be always in a high-efficiency state, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is an overall stereogram of the present invention;

[0023] Figure 2 It is a structural diagram of the processing station in the present invention;

[0024] Figure 3 This is a structural diagram of the magnetic separation plate in the present invention;

[0025] Figure 4 This is a structural diagram of the weight block in the present invention;

[0026] Figure 5 This is a schematic structural diagram of the arc-shaped fan plate in the present invention;

[0027] Figure 6 It is a structural diagram of the scatterer in the present invention;

[0028] Figure 7 This is a structural diagram of the bearing seat in the present invention;

[0029] Figure 8 It is a structural diagram of the screening plate in the present invention.

[0030] In the figure: 1. processing table; 2. guard plate; 3. condensation plate; 4. screening plate; 5. magnetic separation plate; 6. unloading bin; 7. electromagnetic rod; 8. support table; 9. hinge seat; 10. rotating rod; 11. arc fan plate; 12. motor; 13. multi-stage arc telescopic rod; 14. connecting rope; 15. weighing weight; 16. torsion spring 1; 17. collecting box; 18. rotating shaft; 19. scatterer; 20. transmission ring; 21. transmission belt; 22. gear; 23. arc rack plate; 24. fixing rod; 25. connecting rod; 26. pressing ball; 27. side plate; 28. bearing seat; 29. ​​torsion spring 2; 30. sieve hole 1; 31. sieve hole 2; 32. parking wheel; 33. limit table; 34. collecting box 1; 35. collecting box 2; 36. collecting box 3; 37. rod ring. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] like Figures 1 to 8 As shown, the present invention provides a technical solution: a lost foam casting sand processing device, comprising a processing table 1, a guard plate 2 is symmetrically fixedly connected to the top of the processing table 1, a condensing plate 3 is provided on one side of the guard plate 2, a screening plate 4 and a magnetic separation plate 5 are provided above the processing table 1, the screening plate 4 is located on one side below the magnetic separation plate 5, a lower material bin 6 is provided above the top of the magnetic separation plate 5, the lower material bin 6 is fixedly installed on the top of the processing table 1, the outlet end of the lower material bin 6 is aligned with the top of the magnetic separation plate 5, two electromagnetic rods 7 are placed on the side plates of the magnetic separation plate 5, the two electromagnetic rods 7 span the surface of the magnetic separation plate 5, the surface of the magnetic separation plate 5 is provided with a loosening component for evenly breaking up the molding sand, and a vibration component is provided at the bottom of the magnetic separation plate 5. The vibration component is used to drive the magnetic separation plate 5 and the screening plate 4 to vibrate at the same time, and adjustment components are provided on both sides of the magnetic separation plate 5 so that the magnetic separation plate 5 can be tilted in the opposite direction.

[0033] During operation: When processing the molding sand, the operator continuously pours the used molding sand into the lower hopper 6, and passes current through the electromagnetic rod 7 to maintain a continuous working state. The molding sand falls from the outlet end of the lower hopper 6 to the top surface of the magnetic separator 5 and flows downward along the inclined surface of the magnetic separator 5;

[0034] During the flow process, the molding sand first passes through the loosening component. The loosening component fully breaks up the molding sand through movement to avoid sand agglomeration, thereby preventing it from affecting the subsequent magnetic separation and impurity removal and screening steps. The broken-up molding sand continues to flow along the inclined surface of the magnetic separation plate 5 and passes through the energized electromagnetic rod 7. When the electromagnetic rod 7 is energized, a strong magnetic field is generated. The ferromagnetic impurities in the molding sand are acted upon by the magnetic force in the magnetic field and are adsorbed on the surface of the electromagnetic rod 7, thereby completing the first step of magnetic separation and impurity removal of the molding sand. During this process, the vibration component continuously drives the magnetic separation plate 5 to vibrate, causing the molding sand to flow along the inclined surface of the magnetic separation plate 5 in a shaking form, further improving the efficiency and quality of magnetic separation and impurity removal.

[0035] After the magnetic separation and impurity removal, the molding sand falls from the bottom of the magnetic separation plate 5 to the top of the screening plate 4 and continues to flow along the inclined surface of the screening plate 4 for particle size classification. During the classification process, the molding sand with larger particle size is cooled closer to the condensing plate 3, while the molding sand with smaller particle size is cooled slightly away from the condensing plate 3. At the same time, the vibration component also drives the screening plate 4 to vibrate, further improving the efficiency and accuracy of screening.

[0036] After the electromagnetic rod 7 has been working for a period of time, the ferromagnetic impurities adsorbed on its surface gradually increase and reach a saturated state. At this time, its adsorption effect will be greatly weakened. At this time, the inclination direction of the magnetic separation plate 5 is adjusted by adjusting the component so that its outlet end is no longer aligned with the top of the screening plate 4, but toward the side away from the screening plate 4. Subsequently, the current of the electromagnetic rod 7 is disconnected, and the ferromagnetic impurities adsorbed on its surface will fall onto the inclined surface of the magnetic separation plate 5 and flow to the other side along the inclined surface of the magnetic separation plate 5 at this time, thereby realizing the processing and collection of the ferromagnetic impurities and ensuring the subsequent adsorption effect of the electromagnetic rod 7;

[0037] Through the above embodiment, the agglomerated or agglomerated molding sand particles are dispersed through the loose components to restore their fluidity, thereby avoiding the molding sand from agglomerating in subsequent processing, which may lead to a decrease in the efficiency of magnetic separation and screening. The evenly dispersed molding sand is more likely to contact the electromagnetic rod 7, ensuring that the ferromagnetic impurities are fully adsorbed, and the broken molding sand is more evenly distributed on the screening plate 4, reducing the risk of large particles clogging the screen. The magnetic separation plate 5 and the screening plate 4 are driven to vibrate through the vibration component, so that the molding sand flows in a shaking form on the inclined surface, avoiding accumulation or stagnation, and ensuring that the molding sand is on the magnetic separation plate. 5 and the screening plate 4 are evenly distributed to improve the processing efficiency. The vibration makes the molding sand fully contact with the electromagnetic rod 7, enhances the adsorption capacity of the magnetic field to ferromagnetic impurities, and continuously vibrates to avoid the accumulation of molding sand on the screening plate 4, ensuring that the sieve holes are unobstructed; by adjusting the components, the inclination angle of the magnetic separation plate 5 is changed so that its outlet end can face different directions. After the electromagnetic rod 7 is saturated with adsorption, the magnetic separation plate 5 is turned to make the impurities flow to the collection area. By regularly cleaning the impurities on the surface of the electromagnetic rod 7, it is ensured that its adsorption capacity is always in a high-efficiency state, thereby improving production efficiency.

[0038] like Figures 4 and 5 As shown, the top of the processing table 1 is fixedly connected to a support table 8, the top of the support table 8 is fixedly connected to a hinge seat 9, the shaft of the hinge seat 9 is fixedly connected to the centers of both sides of the magnetic separation plate 5, the excitation component includes a rotating rod 10, the outer wall of the rotating rod 10 is symmetrically fixedly connected to an arc-shaped fan plate 11, the outer side of the arc-shaped fan plate 11 is in contact with the bottom of one end of the magnetic separation plate 5, and one end of the rotating rod 10 is fixedly connected to a motor 12.

[0039] During operation: In the initial state, the two sets of arc-shaped fan plates 11 are close to the bottom of the magnetic separation plate 5, effectively supporting the magnetic separation plate 5 and keeping the magnetic separation plate 5 in an inclined state as a whole. When the molding sand falls onto the top surface of the magnetic separation plate 5 through the outlet end of the lower hopper 6 and flows downward along the inclined surface of the magnetic separation plate 5, the motor 12 drives the rotating rod 10 to rotate, driving the arc-shaped fan plates 11 to periodically squeeze the bottom of one end of the magnetic separation plate 5, causing the magnetic separation plate 5 to vibrate with the hinge seat 9 as the axis, so that the molding sand flows along the inclined surface of the magnetic separation plate 5 in a shaking form, further improving the efficiency and quality of magnetic separation and impurity removal.

[0040] like Figure 3 and Figure 6 As shown, the loose component includes two rotating shafts 18, and the outer walls of the two rotating shafts 18 are fixedly connected to the scatterers 19. The rotating shafts 18 are rotatably connected to the inner walls of the side plates of the magnetic separator 5 and span the surface of the magnetic separator 5. The outer walls of both ends of the two rotating shafts 18 are fixedly connected to the transmission rings 20, and the outer walls of the transmission rings 20 are connected with transmission belts 21. A rotating component that drives the scatterers 19 to rotate is provided on the outer side of one of the rotating shafts 18.

[0041] During operation: when the excitation component causes the magnetic separation plate 5 to vibrate with the hinge seat 9 as the axis, since the rotating shaft 18 is rotatably connected to the inner wall of the side plate of the magnetic separation plate 5, the rotating shaft 18 will also rotate a certain amplitude with the hinge seat 9 as the axis as the vibration of the magnetic separation plate 5. This is the revolution process. When the rotating shaft 18 revolves, one of the rotating shafts 18 will rotate under the triggering of the self-rotation component, and drive the other rotating shaft 18 to rotate through the transmission belt 21 and the transmission ring 20. When the rotating shaft 18 rotates, the self-rotation of the scrambler 19 can penetrate into the interior of the molding sand, thoroughly disperse the agglomerated or agglomerated molding sand particles, and restore its good fluidity. The molding sand after being broken up by the loosening component has its fluidity and uniformity significantly improved, providing favorable conditions for subsequent magnetic separation, impurity removal and screening links.

[0042] like Figure 3 and Figure 6As shown, the rotation assembly includes two gears 22, the arc-shaped fan plates 11 are fixedly installed at both ends of one of the rotating shafts 18, the top of the support platform 8 is symmetrically fixedly connected with a fixed rod 24, and the top of the fixed rod 24 is fixedly connected with an arc-shaped rack plate 23, and the teeth of the gear 22 can engage with the teeth of the arc-shaped rack plate 23.

[0043] During operation: When the magnetic separation plate 5 vibrates with the hinge seat 9 as the axis due to the action of the excitation component, the rotating shaft 18 equipped with the gear 22 will swing synchronously with the magnetic separation plate 5. During this process, the gear 22 is engaged with the arc-shaped rack plate 23 fixed on the support platform 8. As the magnetic separation plate 5 continues to vibrate, the swing trajectory of the rotating shaft 18 causes the gear 22 to roll along the tooth surface of the arc-shaped rack plate 23. Since the position of the arc-shaped rack plate 23 is fixed, the gear 22 is subjected to the reaction of the tooth meshing force during the rolling process, thereby generating self-rotation. The self-rotation is transmitted to the scatterer 19 through the rotating shaft 18, causing it to rotate and scatter the molding sand.

[0044] like Figures 3 and 4 As shown, connecting ropes 14 are fixedly connected to both sides of the inner wall of one end of the magnetic dividing plate 5, and the bottom of the connecting ropes 14 is fixedly connected to a weight block 15. The bottom of the other end of the magnetic dividing plate 5 is symmetrically fixedly connected to a torsion spring 16, and the end of the torsion spring 16 away from the magnetic dividing plate 5 is fixedly connected to one side of the hinged seat 9.

[0045] During operation: when the bottom of one end of the magnetic dividing plate 5 is squeezed and lifted by the rotation of the arc fan plate 11, the magnetic dividing plate 5 rotates with the hinge seat 9 as the axis. At this time, the torsion spring 16 is compressed. As the arc fan plate 11 continues to rotate, when it no longer contacts the bottom of the magnetic dividing plate 5, this end of the magnetic dividing plate 5 loses the upward supporting force provided by the arc fan plate 11. At the same time, the connecting rope 14 and the weight block 15 play a role. The weight block 15 is subjected to gravity and will generate a downward pulling force on the magnetic dividing plate 5 through the connecting rope 14. Under the combined action of the gravity pulling force of the weight block 15 and the elastic restoring force of the torsion spring 16, this end of the magnetic dividing plate 5 will automatically swing downward and reset. This swing reset mechanism enables the magnetic dividing plate 5 to swing periodically around the hinge seat 9, forming a stable vibration effect.

[0046] like Figures 3 to 5 As shown, a multi-stage arc-shaped telescopic rod 13 is symmetrically fixedly connected to one side of the articulated seat 9, and one end of the multi-stage arc-shaped telescopic rod 13 away from the articulated seat 9 is fixedly connected to a sleeve rod ring 37, the outer walls of both ends of the rotating rod 10 are fixedly connected to the inner wall of the sleeve rod ring 37, the motor 12 is fixedly installed on one side of the sleeve rod ring 37, and a collection box 17 is provided on the top of the support platform 8.

[0047] During operation: when the ferromagnetic impurities adsorbed on the outer wall of the electromagnetic rod 7 reach a saturated state, the multi-stage arc telescopic rod 13 is controlled to contract. As the multi-stage arc telescopic rod 13 contracts, the arc fan plate 11 and the rotating rod 10 will drop as a whole along the arc trajectory. At this time, the arc fan plate 11 no longer effectively supports the bottom of this end of the magnetic separation plate 5, and the magnetic separation plate 5 will overcome the elastic restoring force of the torsion spring 16 under the huge gravity of the weight block 15, so that this end of the magnetic separation plate 5 swings downward, thereby driving the magnetic separation plate 5 as a whole to rotate around the hinge seat 9 as the axis, changing the inclination angle of the magnetic separation plate 5. When the electromagnetic rod 7 is disconnected from the current, the impurities can flow along the inclined surface of the magnetic separation plate 5 toward the other end and flow into the interior of the collection box 17 for collection, without flowing to the screening plate 4 and being remixed with the previous molding sand.

[0048] like Figures 7 and 8 As shown, the surface of the screen plate 4 is evenly arranged with screen hole 1 30 and screen hole 2 31, the aperture diameter of screen hole 1 30 is smaller than the aperture diameter of screen hole 2 31, and the top of the processing table 1 is symmetrically fixed with a bearing seat 28, and the inner wall of the bearing seat 28 is rotatably connected to the center of both sides of the screen plate 4.

[0049] During operation: the molding sand after magnetic separation can flow into the top of the screen plate 4 through the bottom of the magnetic separation plate 5, and can flow along the inclined surface of the screen plate 4. The screen plate 4 can maintain an inclined state in a natural state. Under the joint action of the vibration component, the screen plate 4 can also vibrate slightly. Along with the vibration, the molding sand with smaller particle size will first flow down through the inner wall of the screen hole 1 30, and when continuing to flow, the molding sand with medium particle size will flow down from the inner wall of the screen hole 2 31, and the molding sand with the largest particle size will flow out from the outlet end of the screen plate 4.

[0050] like Figures 7 and 8 As shown, the excitation assembly also includes a connecting rod 25, which is fixedly connected between the inner walls of the other end of the magnetic separation plate 5. The bottom of the connecting rod 25 is fixedly connected with a downward pressure ball 26, and the side of the screening plate 4 is fixedly connected with a side connecting plate 27. A torsion spring 29 is fixedly connected between the bottom of the side connecting plate 27 and one side of the bearing seat 28.

[0051] During operation: when the arc fan plate 11 rotates and lifts the bottom of one end of the magnetic separation plate 5 to achieve vibration of the magnetic separation plate 5, the end of the magnetic separation plate 5 close to the downward pressure ball 26 will swing downward. At this time, the downward pressure ball 26 will move downward with the swing of the magnetic separation plate 5 and gradually approach the screening plate 4. The downward pressure ball 26 will apply a certain downward pressure on the screening plate 4 through the side connecting plate 27, so that this end of the screening plate 4 swings downward with the bearing seat 28 as the center and squeezes the torsion spring 29 to deform. When the downward pressure ball 26 rises and swings back to its original position, the screening plate 4 will return to its original position under the action of the torsion spring 29, and the effect of driving the screening plate 4 to vibrate is achieved repeatedly.

[0052] like Figures 7 and 8 As shown, the top of the processing table 1 is symmetrically fixedly connected to a limiting platform 33, and the two sides of the end of the screening plate 4 away from the side connecting plate 27 are fixedly connected to parking wheels 32.

[0053] During operation: in the initial state, the screening plate 4 is kept in an inclined state, and the parking wheel 32 is in contact with the top of the limit platform 33. The limit platform 33 provides stable support for the screening plate 4, ensuring that the screening plate 4 is in a suitable initial tilt angle so that the molding sand can flow smoothly along its inclined surface for screening. When the side plate 27 is pressed down by the downward pressure ball 26 and swung downward, the screening plate 4 rotates around the bearing seat 28, and the end away from the side plate 27 will lift up, and the parking wheel 32 will lift up accordingly, breaking away from the contact state with the top of the limit platform 33. After the downward pressure ball 26 separates from the side plate 27, the side plate 27 is reset under the action of the torsion spring 29. At this time, the parking wheel 32 is re-adapted to the limit platform 33, and the limit platform 33 limits the rotation angle of one end of the screening plate 4, so that it vibrates in a stable state.

[0054] like Figure 2 and Figure 7 As shown, collecting box 1 34 , collecting box 2 35 and collecting box 3 36 are provided on the top of the processing station 1 . Collecting box 1 34 is located below the bottom outlet of the sieve plate 4 , collecting box 2 35 is located below sieve hole 2 31 , and collecting box 3 36 is located below sieve hole 1 30 .

[0055] During operation: molding sands with larger, medium and smaller particle sizes are received in turn through collecting box 1 34, collecting box 2 35 and collecting box 3 36 respectively, and the distances between collecting box 1 34, collecting box 2 35 and collecting box 3 36 and the condensation plate 3 are increased in turn, so that molding sands with larger particle sizes are closer to the cold source to absorb cold air for cooling, so that molding sands of different particle sizes can be cooled more efficiently, thereby improving the rationality of the overall production process and product quality.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A lost foam casting sand processing device, comprising a processing table, characterized in that: A guard plate is symmetrically fixedly connected to the top of the processing table, a condensing plate is provided on one side of the guard plate, a screening plate and a magnetic separation plate are provided above the processing table, the screening plate is located on one side below the magnetic separation plate, a lower hopper is provided above the top of the magnetic separation plate, the lower hopper is fixedly installed on the top of the processing table, the outlet end of the lower hopper is aligned with the top of the magnetic separation plate, two electromagnetic rods are placed on the side panels of the magnetic separation plate, the two electromagnetic rods span the surface of the magnetic separation plate, the surface of the magnetic separation plate is provided with a loosening component for evenly breaking up the molding sand, a vibration component is provided at the bottom of the magnetic separation plate, the vibration component is used to drive the magnetic separation plate and the screening plate to vibrate at the same time, and adjustment components are provided on both sides of the magnetic separation plate to enable the magnetic separation plate to tilt in the opposite direction; The top of the processing table is fixedly connected to a support table, and the top of the support table is fixedly connected to a hinged seat. The shaft of the hinged seat is fixedly connected to the centers of both sides of the magnetic separation plate. The excitation assembly includes a rotating rod, and the outer wall of the rotating rod is symmetrically fixedly connected to an arc-shaped fan plate. The outer side of the arc-shaped fan plate is in contact with the bottom of one end of the magnetic separation plate. One end of the rotating rod is fixedly connected to a motor. The loosening assembly includes two rotating shafts, the outer walls of the two rotating shafts are fixedly connected to the scrambler, the rotating shafts are rotatably connected to the inner wall of the side plate of the magnetic separator and span the surface of the magnetic separator, the outer walls of both ends of the two rotating shafts are fixedly connected to the transmission ring, and the outer walls of the transmission rings are connected with a transmission belt, and the outer side of one of the rotating shafts is provided with a rotation assembly that drives the scrambler to rotate; The self-rotating assembly includes two gears, arc-shaped fan plates are fixedly installed at both ends of one of the rotating shafts, the top of the support platform is symmetrically fixedly connected to fixed rods, and the tops of the fixed rods are fixedly connected to arc-shaped rack plates, and the teeth of the gears can mesh with the teeth of the arc-shaped rack plates; Both sides of the inner wall of one end of the magnetic dividing plate are fixedly connected with connecting ropes, and the bottoms of the connecting ropes are fixedly connected to the weight blocks. The bottom of the other end of the magnetic dividing plate is symmetrically fixedly connected to a torsion spring 1, and the end of the torsion spring 1 away from the magnetic dividing plate is fixedly connected to one side of the hinged seat; A multi-stage arc-shaped telescopic rod is symmetrically fixedly connected to one side of the articulated seat, and one end of the multi-stage arc-shaped telescopic rod away from the articulated seat is fixedly connected to a sleeve rod ring. The outer walls of both ends of the rotating rod are fixedly connected to the inner wall of the sleeve rod ring. The motor is fixedly installed on one side of the sleeve rod ring, and a material collection box is provided on the top of the support platform.

2. The lost foam casting sand processing device according to claim 1, characterized in that: The surface of the screening plate is evenly arranged with screen hole one and screen hole two, the aperture diameter of screen hole one is smaller than the aperture diameter of screen hole two, and a bearing seat is symmetrically fixed on the top of the processing table, and the inner wall of the bearing seat is rotatably connected to the center of both sides of the screening plate.

3. The lost foam casting sand processing device according to claim 2, characterized in that: The excitation assembly also includes a connecting rod, which is fixedly connected between the inner walls of the other end of the magnetic separation plate. The bottom of the connecting rod is fixedly connected with a downward pressure ball, and the side of the screening plate is fixedly connected with a side connecting plate. A torsion spring 2 is fixedly connected between the bottom of the side connecting plate and one side of the bearing seat.

4. The lost foam casting sand processing device according to claim 3, characterized in that: The top of the processing table is symmetrically fixedly connected with a limiting platform, and both sides of one end of the screening plate away from the side connecting plate are fixedly connected with parking wheels.

5. The lost foam casting sand processing device according to claim 4, characterized in that: Collection box 1, collection box 2 and collection box 3 are set on the top of the processing table. Collection box 1 is located below the bottom outlet of the sieve plate, collection box 2 is located below sieve hole 2, and collection box 3 is located below sieve hole 1.

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