Sand mold casting machine

Abstract

The present invention belongs to the technical field of sand mold casting, specifically, a sand mold casting forming machine, comprising a casing, sand dischargers are arranged on both sides of the top of the casing, sand boxes are symmetrically arranged inside the casing, a box car is arranged at the bottom of the casing, a sand spreading motor is fixedly installed on the top of the inner wall of the casing, screw shafts are symmetrically fixedly installed on the output end of the sand spreading motor, the outer walls of the two screw shafts are threadedly connected with push plates, and the bottom ends of the two push plates are provided with sand spreading components; when sand enters the casing, the sand screening component starts to screen the sand, so that the sand in the bonded state is dispersed through screening and shaking, and the sand after screening falls downward, and the sand filtering component starts to filter the fallen sand, and the iron slag remaining in the sand is filtered out to prevent the sand from being mixed with iron slag when the sand is recovered, and the used sand can be gathered and collected by the cooperation of the sand screening component and the sand filtering component, so as to facilitate the subsequent recycling and reuse.

Description

Technical Field

[0001] The invention belongs to the technical field of sand mold casting, in particular to a sand mold casting forming machine. Background Art

[0002] Sand casting is a widely used form of casting that uses sand to create a mold. In this process, a model of the finished part or a wooden pattern is placed in the sand, and then the sand is filled around the pattern. After the pattern is removed, the sand forms a mold. In order to remove the pattern before pouring the metal, the mold should be made into two or more parts, and holes and vents for pouring metal into the mold are left during the mold making process to form a gating system. After the mold is poured with liquid metal, it is kept for an appropriate time until the metal solidifies. After the part is removed, the mold is destroyed, so a new mold must be made for each casting.

[0003] A Chinese patent with publication number CN117960994A discloses a sand mold casting molding equipment, including an air storage cylinder in which the wind force and humidity near the air inlet are greater than other parts, and the annular tube is designed to be spirally shaped, so that the annular tube is in contact with the air storage cylinder at all angles, thereby reducing the difference in humidity and temperature in the annular tube; and the spiral annular tube has a longer path length than a straight tube, thereby extending the humidification or drying time of the molding sand in the annular tube and improving the efficiency of humidity control. The annular tube that spirally extends downward utilizes the gravity of the molding sand itself to make the molding sand slide downward along the direction of the annular tube, without the need for additional power, thus saving energy, and the hot air can blow away some of the sand particles that block the air inlet, thereby ensuring the smooth flow of the air inlet.

[0004] In the current existing technology, when the sand mold is taken out, since the formed casting is covered in sand, the sand mold needs to be destroyed first, and then the casting in the sand mold is taken out. The destroyed sand mold is basically placed everywhere, and when it is recycled, these scattered sand molds need to be collected and gathered, which is extremely time-consuming.

[0005] To this end, the present invention provides a sand mold casting molding machine. Summary of the invention

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

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: a sand mold casting molding machine described in the present invention comprises a casing, sand dischargers are arranged on both sides of the top of the casing, sand boxes are symmetrically arranged inside the casing, a box car is arranged at the bottom of the casing, a sanding motor is fixedly installed on the top of the inner wall of the casing, screw shafts are symmetrically fixedly installed on the output end of the sanding motor, the outer walls of the two screw shafts are threadedly connected with push plates, the bottom ends of the two push plates are provided with sanding components, the sanding components are used to wipe off the excess sand on the sand box, and play the role of leveling the sand, and a sand cleaning unit is arranged at the bottom of the inner wall of the casing, and the sand cleaning unit is used to screen and collect the sand, and play the role of collecting sand;

[0008] By placing two sand boxes at the two ends of the inner wall of the casing respectively, and then placing the finished part model or wooden model in the two sand boxes, and then two sand lowers inject sand into the two sand boxes respectively, when the sand is injected into the sand box to a certain extent, the sand lowers stop injecting sand, and then the two sand boxes are moved into the casing, and when they move to a certain position, they stop moving, and then the sanding motor drives the screw shaft to rotate, and when the screw shaft rotates, it drives the two push plates to move inward. When the two push plates move inward, the sanding assembly at the bottom of the push plates wipes the sand on the sand box and wipes off the excess sand on the top of the sand box. When the screw shaft moves to a certain position, the sanding assembly at the bottom of the screw shaft is placed on the other side of the sand box, and the sanding assembly completes the sanding operation on the top of the sand box, and then the sanding assembly at the bottom of the screw shaft pours the wiped sand into the sand cleaning unit in the casing, and the sand cleaning unit screens and collects the poured sand After the two sand boxes are leveled, the two sand boxes are turned over, the finished part models or wooden models inside are taken out, the two are overlapped and folded, and then the two sand boxes are fixed by pins. After fixing, grouting and molding are carried out through the grouting ports on the sand boxes. When the iron slurry is molded between the two sand boxes, the mold is removed and the parts are taken out in the middle position of the casing, the casting removed from the mold is taken away, and the sand mold removed from the mold is placed inside the casing. Then the sand cleaning unit screens and collects the sand mold left by the demolding, and the screened and collected sand will enter the box car, which can solve the problem that the removed sand molds are placed everywhere and are difficult to collect when they are collected and gathered in the above problem. The excess sand on the sand box is wiped off by the sand smearing component, and the sand can be greatly collected while leveling the sand. The wiped sand and the sand after demolding are screened and collected by the sand cleaning unit, which can greatly improve the subsequent production operation rate.

[0009] Preferably, the inner wall of the casing is symmetrically provided with box-moving motors, the output shafts of the two box-moving motors are fixedly installed with screws, the inner wall of the casing is symmetrically slidably connected with a fixed mold moving plate, the outer walls of the two screws are threadedly connected with rectangular blocks, the tops of the two rectangular blocks are respectively fixedly connected to the bottoms of the two fixed mold moving plates, and the two sand boxes are respectively placed on the tops of the two fixed mold moving plates. When the sand boxes are moved, the box-moving motor drives the screw to rotate, and the screw rotates and drives the fixed mold moving plate to move through the rectangular blocks. The fixed mold moving plate moves and drives the sand box to move, thereby moving the sand box in the casing.

[0010] Preferably, two groups of hinge plates are symmetrically arranged on the inner wall of the casing, and the inner wall of the casing is symmetrically rotated and connected to the limiting block. When the sanding assembly smoothes the sand in the sand box, the hinge plates are folded out from the casing. When the inner side of the hinge plates contacts the limiting block, the hinge plates are stopped from rotating. The setting of the hinge plates and the limiting block provides a way for the sanding assembly to pour sand. When the sanding assembly has finished pouring sand, the hinge plates are folded down, and the two sand boxes can be moved to the middle of the inner wall of the casing.

[0011] Preferably, the sanding assembly includes a sanding plate box, the inner wall of the sanding plate box is rotatably connected with a sand pressing shaft, the bottom of the sand pressing shaft is at the same height as the edge of the sand box, a hinge is provided between the push plate and the sanding plate box, a return spring is fixedly installed on the top of the sanding plate box, one end of the return spring is fixedly connected to the inner side of the push plate, when sanding, the push plate drives the sanding plate box to slide on the top of the sand box, while sliding, the sand pressing shaft in the sanding plate box rolls the sand on the top of the sand box, and while rolling, the sand pressing shaft pushes the excess sand on the top of the sand box, and the excess sand falls on the sanding plate When the sanding board box is moved, the hinge plates will be opened. When the sanding board box smoothes the sand on the top of the sand box, one side wall edge of the sanding board box will contact one side of the hinge plate to limit it. When the push plate continues to drive the sanding board box to move, a limit is formed on one side of the sanding board box. The sanding board box will be tilted on the inner side of the push plate through the hinge, and the sand in the sanding board box will be poured out. When the pouring is completed, the push plate drives the sanding board box to move backward, and the sanding board box will be reset by the pulling force of the reset spring, so that the sanding board box and the push plate return to a horizontal state, thereby playing the role of sanding and pouring sand.

[0012] Preferably, an opening and closing plate is symmetrically arranged in the middle of the inner wall of the casing, and a rotating shaft is fixedly installed on one side of the two opening and closing plates, and the outer walls of the two rotating shafts are rotatably connected to the inner wall of the casing, and an annular rod is fixedly installed on the outer walls of the two push plates, and a control plate rope is arranged between the two annular rods and the two rotating shafts, and a counterweight block is fixedly installed on the bottom of the two opening and closing plates. When the push plate moves, the push plate will drive the annular rod to move. When the annular rod moves, the control plate rope between the annular rod and the rotating shaft will gradually relax, and the opening and closing plate will slowly drive the rotating shaft to rotate under the gravity of the counterweight block. When the rotating shaft rotates, the opening and closing plate will slowly open. When the sanding plate box is tilted on the hinge plate, the opening and closing plate is fully opened, and the sand in the sanding plate box will be poured into the casing through the opening and closing plate. When the two sand boxes are demolded at the top of the opening and closing plate, the removed sand mold will be placed on the opening and closing plate. Through the slow opening of the opening and closing plate, the removed sand mold will enter and slide into the casing, playing the role of collecting sand.

[0013] Preferably, the sand cleaning unit can be divided into a sand screening component and a sand filtering component. The sand screening component is used to shake off the sand blocks to facilitate the subsequent recovery of the sand. The sand filtering component is used to filter the iron slag remaining in the sand to prevent the sand from being mixed with iron slag when the sand is recovered, thereby playing the role of filtering the residue. When the sand enters the casing, the sand screening component starts to screen the sand, so that the sand in a bonded state is dispersed through screening and shaking. After screening, the sand falls downward, and the sand filtering component starts to filter the fallen sand to filter out the iron slag remaining in the sand to prevent the sand from being mixed with iron slag when the sand is recovered. Through the cooperation of the sand screening component and the sand filtering component, the used sand can be gathered and collected for subsequent recycling and reuse.

[0014] Preferably, the sand screening assembly includes a sand screening plate and a cam shaft, the wall edge of the sand screening plate is slidably connected to the inner wall of the casing, the cam shaft is placed directly below the sand screening plate, a sand screening motor is fixedly installed at one end of the sand screening plate, and the sand screening motor is placed outside the casing. When sand falls into the casing, the sand will slide down onto the sand screening plate. At this time, the sand screening motor drives the cam shaft to rotate, and the cam shaft rotates while lifting the sand screening plate to move up and down in the casing. When moving up and down, the sand blocks on the sand screening plate are shaken apart, so that they change from a block state to granular state. During screening, larger iron slag will remain on the sand screening plate, playing the role of sand screening.

[0015] Preferably, the sand filter assembly includes an electromagnetic box, which is placed at the bottom of the inner wall of the casing, and the electromagnetic box is placed below the convex shaft. A magnetic block is fixedly installed on the inner wall of the electromagnetic box, and sand retaining plates are fixedly installed on both sides of the electromagnetic box. When the sand falls after screening, the fallen sand will flow down along the inclined sliding surface on the electromagnetic box and slide down to both sides of the electromagnetic box. When sliding down, the magnetic blocks in the electromagnetic box generate a magnetic magnetic field to pull and absorb the iron substances in the sliding sand. The iron substances in the sand will be pulled through the sand retaining plate into the electromagnetic box, and then be adsorbed by the magnetic blocks, thereby filtering the iron slag.

[0016] Preferably, a drawer box is provided at the bottom of the electromagnetic box, and the drawer box is slidably connected to the inner wall of the casing. When the electromagnetic box stops operating, the magnetic block in the electromagnetic box loses power and thus loses the magnetic field, and the iron slag adsorbed on the magnetic block will fall into the drawer box through the bottom of the electromagnetic box for collection.

[0017] Preferably, the inner wall of the casing is symmetrically rotatably provided with a sand dividing rotating plate, the inner wall of the casing is symmetrically fixedly installed with a resisting plate, the inner wall of the casing is symmetrically rotatably connected with a sand sliding plate, the two sand sliding plates are respectively overlapped with one end of the two resisting plates, the wall edges of the two sand dividing rotating plates are respectively slidably connected with one end of the two sand sliding plates, when the sand is screened and dropped, the dropped sand will slide along the surface of the sand sliding plate to the sand dividing rotating plate, through the weight of the sand accumulated on the sand dividing rotating plate, when it accumulates to a certain extent, the sand presses the sand dividing rotating plate to rotate, and when the sand dividing rotating plate rotates, the sand placed inside the sand dividing rotating plate The sand will slide on the inclined sliding surface of the electromagnetic box. At the same time, one end of the sand dividing rotary plate lifts the sand sliding plate and rotates it open in the casing. The end edge of the sand dividing rotary plate will slide from the bottom of the sand sliding plate to the top of the sand sliding plate. Then, the continuous falling of the sand will make the sand dividing rotary plate rotate continuously, forming a repetitive sand dividing transmission. The fallen sand can be divided into multiple groups and filtered in turn to prevent poor iron filtering effect due to excessive amount of sand in the falling process. This scheme can improve the effect of filtering iron slag, and the setting of the abutment plate provides a certain limit for the placement of the sand sliding plate.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The sand mold casting machine described in the present invention starts to screen the sand when the sand enters the casing, so that the sand in a bonded state is dispersed through screening and shaking, and the sand after screening falls downward, and the sand filtering component starts to filter the fallen sand to filter out the iron slag remaining in the sand to prevent the sand from being mixed with iron slag when the sand is recovered. The sand screening component and the sand filtering component cooperate with each other to gather the used sand for subsequent recycling and reuse.

[0020] When the sand plastering plate box smoothes the sand on the top of the sand box, one side wall edge of the sand plastering plate box will contact one side of the hinge plate to limit the position. When the push plate continues to drive the sand plastering plate box to move, a limit is formed on one side of the sand plastering plate box, and the sand plastering plate box will tilt on the inner side of the push plate through the hinge, and the sand in the sand plastering plate box will pour out. When the pouring is completed, the push plate drives the sand plastering plate box to move backward, and the sand plastering plate box will be reset by the pulling force of the reset spring, so that the sand plastering plate box and the push plate return to a horizontal state, thereby playing the role of sand plastering and pouring sand.

[0021] 3. The sand mold casting forming machine described in the present invention slides the fallen sand along the surface of the sand sliding plate to the sand dividing rotating plate. Through the weight of the sand accumulated on the sand dividing rotating plate, when it accumulates to a certain extent, the sand presses the sand dividing rotating plate to rotate. When the sand dividing rotating plate rotates, the sand placed in the sand dividing rotating plate will slide on the inclined sliding surface of the electromagnetic box. At the same time, one end of the sand dividing rotating plate lifts the sand sliding plate and rotates it in the machine casing to open. The end edge of the sand dividing rotating plate will slide from the bottom of the sand sliding plate to the top of the sand sliding plate. Subsequently, the continuous falling of sand makes the sand dividing rotating plate rotate continuously to form a sand dividing transmission that repeats itself. The fallen sand can be divided into multiple groups, which are filtered in turn to prevent poor iron filtering effect due to excessive amount of sand in the falling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is the main figure of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the opening and closing plate in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the reset spring in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the hinge in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the moment block in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the sand screening plate in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the sand retaining plate in the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the convex shaft in the present invention;

[0032] Fig.10 It is a structural schematic diagram of the magnetic block in the present invention.

[0033] In the figure: 1. machine casing; 2. sand lowering device; 3. fixed mold shifting plate; 4. box car; 5. sand box; 6. sand plastering plate box; 7. sand plastering motor; 8. screw shaft; 9. sand screening motor; 10. sand screening plate; 11. sand dividing rotating plate; 12. push plate; 13. ring rod; 14. plate control rope; 15. opening and closing plate; 16. counterweight block; 17. rotating shaft; 18. return spring; 19. sand pressing shaft; 20. hinge; 21. box shifting motor; 22. screw rod; 23. moment block; 24. cam shaft; 25. sand retaining plate; 26. electromagnetic box; 27. extraction box; 28. sand sliding plate; 29. ​​stop plate; 30. magnetic block; 31. limit block; 32. hinge plate. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figures 1 to 10 As shown, a sand casting machine according to an embodiment of the present invention comprises a casing 1, sand lowers 2 are arranged on both sides of the top of the casing 1, sand boxes 5 are symmetrically arranged inside the casing 1, a box car 4 is arranged at the bottom of the casing 1, a sanding motor 7 is fixedly installed on the top of the inner wall of the casing 1, a screw shaft 8 is symmetrically fixedly installed on the output end of the sanding motor 7, the outer walls of the two screw shafts 8 are threadedly connected with push plates 12, the bottom ends of the two push plates 12 are provided with sanding components, the sanding components are used to wipe off the excess sand on the sand box 5, and play the role of leveling the sand, and a sand cleaning unit is arranged at the bottom of the inner wall of the casing 1, and the sand cleaning unit is used to screen and collect the sand, and play the role of collecting sand;

[0036] In the current prior art, when the sand mold is taken out, since the formed casting is covered in sand, the sand mold needs to be destroyed first, and then the casting in the sand mold is taken out. The destroyed sand mold is basically placed everywhere, and when it is recycled, these scattered sand molds need to be collected and gathered, which is extremely time-consuming.

[0037] When the sand is poured into the sand box 5, the sand is removed from the sand box 5 and the sand is then removed from the sand box 5. After the box 5 is leveled, the two sand boxes 5 are reversed, the finished part model or wooden model inside them is taken out, the two are overlapped and folded, and then the two sand boxes 5 are fixed by means of pins. After fixing, grouting molding is performed through the grouting port on the sand box 5. When the iron slurry is molded between the two sand boxes 5, the mold is removed and the parts are taken out at the middle position of the casing 1, the casting part removed from the mold is taken away, and the sand mold removed from the mold is placed inside the casing 1. Then the sand cleaning unit screens and collects the sand mold left by its demolding, and the screened and collected sand will enter the box car 4, which can solve the problem that the removed sand molds are placed everywhere and are difficult to collect when they are collected and gathered in the above-mentioned problem. The excess sand on the sand box 5 is wiped off by the sand wiping component, and the sand can be greatly collected while leveling the sand. The wiped off sand and the sand after demolding are screened and collected by the sand cleaning unit, which can greatly improve the subsequent production operation rate. It should be noted that the injected slurry is iron slurry, and the box car 4 is a movable car.

[0038] like Figures 1 to 6 As shown, the inner wall of the casing 1 is symmetrically provided with a box-moving motor 21, the output shafts of the two box-moving motors 21 are fixedly mounted with screws 22, the inner wall of the casing 1 is symmetrically slidably connected with a fixed mold moving plate 3, the outer walls of the two screws 22 are threadedly connected with a rectangular block 23, the tops of the two rectangular blocks 23 are respectively fixedly connected with the bottoms of the two fixed mold moving plates 3, and the two sand boxes 5 are respectively placed on the tops of the two fixed mold moving plates 3;

[0039] When the sand box 5 is moved, the box moving motor 21 drives the screw 22 to rotate. While the screw 22 rotates, it drives the fixed mold moving plate 3 to move through the moment block 23. While the fixed mold moving plate 3 moves, it drives the sand box 5 to move, thereby moving the sand box 5 in the casing 1. It should be noted here that the fixed mold moving plate 3 is a positioning plate, and the upper surface of the fixed mold moving plate 3 is marked with the fixed placement position of the sand box 5.

[0040] like Figures 1 to 3As shown, two sets of hinge plates 32 are symmetrically arranged on the inner wall of the housing 1, and the inner wall of the housing 1 is symmetrically rotated and connected to the limited block 31;

[0041] When the sanding assembly smoothes the sand in the sand box 5, the hinge plate 32 is folded out from the casing 1. When the inner side of the hinge plate 32 contacts the limit block 31, the hinge plate 32 is stopped from rotating. The setting of the hinge plate 32 and the limit block 31 provides a path for the sanding assembly to pour out the sand. When the sanding assembly has finished pouring out the sand, the hinge plate 32 is folded down, and the two sand boxes 5 can be moved to the middle of the inner wall of the casing 1. It should be noted here that the hinge plate 32 is a foldable limit plate.

[0042] like Figures 4 to 5 As shown, the sanding assembly includes a sanding plate box 6, the inner wall of the sanding plate box 6 is rotatably connected with a sand pressing shaft 19, the bottom of the sand pressing shaft 19 is at the same height as the edge of the sand box 5, a hinge 20 is provided between the push plate 12 and the sanding plate box 6, and a return spring 18 is fixedly installed on the top of the sanding plate box 6, and one end of the return spring 18 is fixedly connected to the inner side of the push plate 12;

[0043] When sanding, the push plate 12 drives the sanding plate box 6 to slide on the top of the sand box 5. While sliding, the sand pressing shaft 19 in the sanding plate box 6 rolls the sand on the top of the sand box 5. While rolling, the sand pressing shaft 19 pushes the excess sand on the top of the sand box 5, and the excess sand falls on both sides of the sanding plate box 6. When sanding, the hinge plate 32 is opened. When the sanding plate box 6 smoothes the sand on the top of the sand box 5, one side wall of the sanding plate box 6 contacts one side of the hinge plate 32 to limit it. When the push plate 12 continues to drive the sanding plate box 6 to move, due to the shape of one side of the sanding plate box 6, the sanding plate box 6 is When a limit position is formed, the sanding board box 6 will be tilted on the inner side of the push plate 12 through the hinge 20, and the sand in the sanding board box 6 will be poured out. When the pouring is completed, the push plate 12 drives the sanding board box 6 to move backward, and the sanding board box 6 will be reset by the pulling force of the reset spring 18, so that the sanding board box 6 and the push plate 12 return to a horizontal state, which plays the role of sanding and pouring sand. It should be noted here that the pulling force of the reset spring 18 needs to be actually calculated, the inner wall edge of the sanding board box 6 slides in contact with the top wall edge of the sand box 5, and the bottom of the sand pressing shaft 19 is at the same height as the top wall edge of the sand box 5.

[0044] like Figures 1 to 3 As shown, an opening and closing plate 15 is symmetrically arranged in the middle of the inner wall of the casing 1, a rotating shaft 17 is fixedly installed on one side of the two opening and closing plates 15, and the outer walls of the two rotating shafts 17 are rotatably connected to the inner wall of the casing 1, and a ring rod 13 is fixedly installed on the outer walls of the two push plates 12, and a control plate rope 14 is arranged between the two ring rods 13 and the two rotating shafts 17, and a counterweight block 16 is fixedly installed at the bottom of the two opening and closing plates 15;

[0045] When the push plate 12 moves, the push plate 12 will drive the ring rod 13 to move. When the ring rod 13 moves, the control plate rope 14 between the ring rod 13 and the rotating shaft 17 will gradually relax, and the opening and closing plate 15 will slowly drive the rotating shaft 17 to rotate under the gravity of the counterweight block. When the rotating shaft 17 rotates, the opening and closing plate 15 will slowly open. When the sanding plate box 6 is tilted on the hinge plate 32, the opening and closing plate 15 is fully opened, and the sand in the sanding plate box 6 will be poured into the casing 1 through the opening and closing plate 15. When the two sand boxes 5 are demolded at the top of the opening and closing plate 15, the removed sand mold will be placed on the opening and closing plate 15. By slowly opening the opening and closing plate 15, the removed sand mold will slide into the casing 1, thereby collecting sand.

[0046] like Figures 7 to 10 As shown, the sand cleaning unit can be divided into a sand screening component and a sand filtering component. The sand screening component is used to shake the sand blocks apart to facilitate the subsequent sand recovery. The sand filtering component is used to filter the iron slag remaining in the sand to prevent the sand from being mixed with iron slag when the sand is recovered, thereby playing the role of filtering the residue.

[0047] When the sand enters the casing 1, the sand screening component starts to screen the sand, so that the sand in a bonded state is dispersed through screening and shaking. The sand after screening falls downward, and the sand filtering component starts to filter the fallen sand to filter out the iron slag remaining in the sand to prevent the sand from being mixed with iron slag when the sand is recovered. Through the cooperation of the sand screening component and the sand filtering component, the used sand can be gathered and collected for subsequent recycling and reuse.

[0048] like Figures 8 to 9 As shown, the sand screening assembly includes a sand screening plate 10 and a convex shaft 24. The wall edge of the sand screening plate 10 is slidably connected to the inner wall of the housing 1. The convex shaft 24 is placed directly below the sand screening plate 10. A sand screening motor 9 is fixedly installed at one end of the sand screening plate 10. The sand screening motor 9 is placed outside the housing 1.

[0049] When sand falls into the casing 1, the sand will slide down onto the sand screening plate 10. At this time, the sand screening motor 9 drives the cam shaft 24 to rotate. While the cam shaft 24 rotates, the sand screening plate 10 is lifted up and down in the casing 1. When moving up and down, the sand blocks on the sand screening plate 10 are shaken apart, and the sand blocks are changed from a block state to a granular state. During screening, larger iron slag will remain on the sand screening plate 10, which plays the role of sand screening.

[0050] like Figures 8 to 10 As shown, the sand filter assembly includes an electromagnetic box 26, which is placed at the bottom of the inner wall of the housing 1, and the electromagnetic box 26 is placed below the convex shaft 24. A magnetic block 30 is fixedly installed on the inner wall of the electromagnetic box 26, and sand retaining plates 25 are fixedly installed on both sides of the electromagnetic box 26;

[0051] When the sand falls after screening, the fallen sand will flow down along the inclined sliding surface of the electromagnetic box 26 and slide down to the two sides of the electromagnetic box 26. When sliding down, the magnetic block 30 in the electromagnetic box 26 generates a magnetic field to pull and absorb the iron substances in the sliding sand. The iron substances in the sand will be pulled through the sand retaining plate 25 into the electromagnetic box 26, and then be adsorbed by the magnetic block 30, thereby filtering the iron slag.

[0052] like Figures 8 to 10 As shown, a drawer box 27 is provided at the bottom of the electromagnetic box 26, and the drawer box 27 is slidably connected to the inner wall of the housing 1;

[0053] When the electromagnetic box 26 stops working, the magnetic block 30 in the electromagnetic box 26 loses power and thus loses the magnetic field, and the iron slag adsorbed on the magnetic block 30 will fall through the bottom of the electromagnetic box 26 into the drawer 27 for collection.

[0054] like Figures 7 and 8 As shown, the inner wall of the casing 1 is symmetrically rotated with a sand dividing rotating plate 11, the inner wall of the casing 1 is symmetrically fixed with a support plate 29, the inner wall of the casing 1 is symmetrically rotated and connected with a sand sliding plate 28, the two sand sliding plates 28 are overlapped with one end of the two support plates 29 respectively, and the wall edges of the two sand dividing rotating plates 11 are slidably connected with one end of the two sand sliding plates 28 respectively;

[0055] When the sand is sieved and falls, the fallen sand will slide along the surface of the sand sliding plate 28 to the sand dividing rotating plate 11. Through the weight of the sand accumulation on the sand dividing rotating plate 11, when it accumulates to a certain extent, the sand presses the sand dividing rotating plate 11 to rotate. When the sand dividing rotating plate 11 rotates, the sand placed in the sand dividing rotating plate 11 will slide on the inclined sliding surface of the electromagnetic box 26. At the same time, one end of the sand dividing rotating plate 11 lifts the sand sliding plate 28 to rotate and open in the casing 1, and the end edge of the sand dividing rotating plate 11 will slide from the bottom of the sand sliding plate 28 to the sand sliding plate The top of 28, and then the sand continues to fall, so that the sand dividing rotating plate 11 rotates continuously, forming a repetitive sand dividing transmission, which can split the fallen sand into multiple groups and filter them in turn to prevent the poor iron filtering effect due to excessive amount of sand in the falling process. This scheme can improve the effect of filtering iron slag, and the setting of the abutment plate 29 provides a certain limit for the placement of the sand sliding plate 28. It should be noted here that the amount of sand entering the sand dividing rotating plate 11 at one time and the rotation distance of the sand dividing rotating plate 11 still need to be actually calculated.

[0056] Working principle: by placing two sand boxes 5 at the two ends of the inner wall of the casing 1 respectively, and then placing the finished part model or wooden model in the two sand boxes 5, and then the two sand lowers 2 inject sand into the two sand boxes 5 respectively, when the sand is injected into the sand box 5 to a certain extent, the sand lower 2 stops injecting sand, and then the two sand boxes 5 are moved into the casing 1, and when they move to a certain position, they stop moving, and then the sanding motor 7 drives the screw shaft 8 to rotate, and when the screw shaft 8 rotates, it drives the two push plates 12 to move inward. When the two push plates 12 move inward, the sanding assembly at the bottom of the push plate 12 wipes the sand on the sand box 5 and wipes off the excess sand on the top of the sand box 5. When the screw shaft 8 moves to a certain position, the sanding assembly at the bottom of the screw shaft 8 is placed on the other side of the sand box 5, and the sanding assembly completes the sanding operation on the top of the sand box 5, and then the sanding assembly at the bottom of the screw shaft 8 pours the wiped sand into the sand cleaning unit in the casing 1. The poured sand is screened and collected. After the two sand boxes 5 are smoothed, the two sand boxes 5 are reversed, the finished part model or wooden model inside them is taken out, the two are overlapped and folded, and then the two sand boxes 5 are fixed by means of a latch. After fixing, grouting molding is performed through the grouting port on the sand box 5. When the iron slurry is molded between the two sand boxes 5, the mold is removed and the parts are taken out at the middle position of the casing 1, the casting part removed from the mold is taken away, and the sand mold removed from the mold is placed inside the casing 1. Then the sand cleaning unit screens and collects the sand mold left by its demolding, and the screened and collected sand will enter the box car 4, which can solve the problem that the removed sand molds are placed everywhere and are difficult to collect when they are collected and gathered in the above-mentioned problem. The excess sand on the sand box 5 is wiped off by the sand wiping component, and the sand can be greatly collected while leveling the sand. The wiped off sand and the sand after demolding are screened and collected by the sand cleaning unit, which can greatly improve the subsequent production operation rate;

[0057] When the sand box 5 is moved, the box moving motor 21 drives the screw 22 to rotate. The screw 22 rotates and drives the fixed mold moving plate 3 to move through the moment block 23. The fixed mold moving plate 3 moves and drives the sand box 5 to move, so that the sand box 5 moves in the housing 1.

[0058] When the sanding assembly smoothes the sand in the sand box 5, the hinge plate 32 is folded out from the housing 1. When the inner side of the hinge plate 32 contacts the limit block 31, the hinge plate 32 is stopped from rotating. The setting of the hinge plate 32 and the limit block 31 provides a path for the sanding assembly to pour the sand. When the sanding assembly has finished pouring the sand, the hinge plate 32 is folded down, and the two sand boxes 5 can be moved to the middle of the inner wall of the housing 1.

[0059] When sanding, the push plate 12 drives the sanding plate box 6 to slide on the top of the sand box 5. While sliding, the sand pressing shaft 19 in the sanding plate box 6 rolls the sand on the top of the sand box 5. While rolling, the sand pressing shaft 19 pushes the excess sand on the top of the sand box 5, and the excess sand falls on both sides of the sanding plate box 6. When sanding, the hinge plate 32 is opened. When the sanding plate box 6 smoothes the sand on the top of the sand box 5, the side wall edge of the sanding plate box 6 will contact one side of the hinge plate 32, and the sanding When the push plate 12 continues to drive the sanding box 6 to move, a limit is formed on one side of the sanding box 6, and the sanding box 6 will be tilted on the inner side of the push plate 12 through the hinge 20, and the sand in the sanding box 6 will be poured out. When the pouring is completed, the push plate 12 drives the sanding box 6 to move backward, and the sanding box 6 will be reset by the pulling force of the reset spring 18, so that the sanding box 6 and the push plate 12 return to a horizontal state, which plays the role of sanding and pouring sand;

[0060] When the push plate 12 moves, the push plate 12 will drive the ring rod 13 to move. When the ring rod 13 moves, the control plate rope 14 between the ring rod 13 and the rotating shaft 17 will gradually relax, and the opening and closing plate 15 will slowly drive the rotating shaft 17 to rotate under the gravity of the counterweight block. When the rotating shaft 17 rotates, the opening and closing plate 15 will slowly open. When the sanding plate box 6 is tilted on the hinge plate 32, the opening and closing plate 15 is fully opened, and the sand in the sanding plate box 6 will be poured into the casing 1 through the opening and closing plate 15. When the two sand boxes 5 are demolded at the top of the opening and closing plate 15, the removed sand mold will be placed on the opening and closing plate 15. Through the slow opening of the opening and closing plate 15, the removed sand mold will slide into the casing 1, playing a role in collecting sand;

[0061] When the sand enters the housing 1, the sand screening component starts to screen the sand, so that the sand in the bonded state is dispersed by screening and shaking, and the sand after screening falls downward, and the sand filtering component starts to filter the fallen sand, and the iron slag remaining in the sand is filtered out to prevent the sand from being mixed with iron slag when the sand is recovered. Through the cooperation between the sand screening component and the sand filtering component, the used sand can be gathered and collected for subsequent recycling and reuse;

[0062] When sand falls into the casing 1, the sand will slide down onto the sand screening plate 10. At this time, the sand screening motor 9 drives the cam shaft 24 to rotate. The cam shaft 24 rotates and lifts the sand screening plate 10 to move up and down in the casing 1. When moving up and down, the sand blocks on the sand screening plate 10 are shaken apart, so that the sand blocks are changed into granules. When screening, the larger iron slag will remain on the sand screening plate 10, which plays the role of screening sand.

[0063] When the sand falls after screening, the falling sand will flow down along the inclined sliding surface of the electromagnetic box 26 and slide down to both sides of the electromagnetic box 26. When sliding down, the magnetic block 30 in the electromagnetic box 26 generates a magnetic field to pull and absorb the iron in the sliding sand. The iron in the sand will be pulled through the sand retaining plate 25 into the electromagnetic box 26, and then be absorbed by the magnetic block 30, playing the role of filtering iron slag;

[0064] When the electromagnetic box 26 stops working, the magnetic block 30 in the electromagnetic box 26 loses power, thereby losing the magnetic field, and the iron slag adsorbed on the magnetic block 30 will fall through the bottom of the electromagnetic box 26 into the drawer 27 for iron slag collection;

[0065] When the sand is sieved and falls, the fallen sand will slide along the surface of the sand sliding plate 28 to the sand dividing rotating plate 11. Through the weight of the sand accumulated on the sand dividing rotating plate 11, when it accumulates to a certain extent, the sand presses the sand dividing rotating plate 11 to rotate. When the sand dividing rotating plate 11 rotates, the sand placed in the sand dividing rotating plate 11 will slide on the inclined sliding surface of the electromagnetic box 26 through sliding. At the same time, one end of the sand dividing rotating plate 11 lifts the sand sliding plate 28 to rotate and open in the casing 1, and the end edge on the sand dividing rotating plate 11 will slide from the bottom of the sand sliding plate 28 to the top of the sand sliding plate 28. Subsequently, through the continuous falling of the sand, the sand dividing rotating plate 11 is continuously rotated, forming a sand dividing transmission that starts over and over again, and the fallen sand can be divided into multiple groups and filtered in turn, so as to prevent the iron filtering effect from being poor due to the excessive amount of sand in the falling process. This scheme can improve the effect of filtering iron slag, and the setting of the abutment plate 29 provides a certain limit for the placement of the sand sliding plate 28.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sand casting machine, characterized in that: The machine comprises a casing (1), wherein both sides of the top of the casing (1) are provided with sand lowers (2), a sand box (5) is symmetrically arranged inside the casing (1), a box car (4) is arranged at the bottom of the casing (1), a sanding motor (7) is fixedly installed at the top of the inner wall of the casing (1), a screw shaft (8) is symmetrically fixedly installed at the output end of the sanding motor (7), the outer walls of the two screw shafts (8) are threadedly connected with push plates (12), the bottom ends of the two push plates (12) are provided with sanding components, the sanding components are used to wipe off excess sand on the sand box (5) to play the role of leveling the sand, and a sand cleaning unit is provided at the bottom of the inner wall of the casing (1), the sand cleaning unit is used to screen and collect sand to play the role of collecting sand; The inner wall of the casing (1) is symmetrically provided with box-shifting motors (21), the output shafts of the two box-shifting motors (21) are fixedly mounted with screw rods (22), the inner wall of the casing (1) is symmetrically slidably connected with a fixed mold shifting plate (3), the outer walls of the two screw rods (22) are threadedly connected with rectangular blocks (23), the tops of the two rectangular blocks (23) are respectively fixedly connected with the bottoms of the two fixed mold shifting plates (3), and the two sand boxes (5) are respectively placed on the tops of the two fixed mold shifting plates (3); The sanding assembly comprises a sanding plate box (6), the inner wall of the sanding plate box (6) is rotatably connected to a sand pressing shaft (19), the bottom of the sand pressing shaft (19) is at the same height as the edge of the sand box (5), a hinge (20) is provided between the push plate (12) and the sanding plate box (6), a return spring (18) is fixedly installed on the top of the sanding plate box (6), and one end of the return spring (18) is fixedly connected to the inner side of the push plate (12); An opening and closing plate (15) is symmetrically arranged in the middle of the inner wall of the casing (1), a rotating shaft (17) is fixedly installed on one side of the two opening and closing plates (15), the outer walls of the two rotating shafts (17) are rotatably connected to the inner wall of the casing (1), the outer walls of the two push plates (12) are fixedly installed with a ring rod (13), a control plate rope (14) is arranged between the two ring rods (13) and the two rotating shafts (17), and a counterweight block (16) is fixedly installed at the bottom of the two opening and closing plates (15); The inner wall of the housing (1) is symmetrically provided with two sets of hinge plates (32), and the inner wall of the housing (1) is symmetrically rotationally connected to the limited block (31); When the push plate (12) moves, the push plate (12) will drive the ring rod (13) to move. When the ring rod (13) moves, the control plate rope (14) between the ring rod (13) and the rotating shaft (17) will gradually relax, and the opening and closing plate (15) will slowly drive the rotating shaft (17) to rotate under the gravity of the counterweight block. When the rotating shaft (17) rotates, the opening and closing plate (15) will slowly open. When the sanding plate box (6) is tilted on the hinge plate (32), the opening and closing plate (15) is fully opened, and the sand in the sanding plate box (6) will be poured into the sand cleaning unit through the opening and closing plate (15). When the two sand boxes (5) are demolded at the top of the opening and closing plate (15), the removed sand mold will be placed on the opening and closing plate (15). Through the slow opening of the opening and closing plate (15), the removed sand mold will slide into the sand cleaning unit, playing a role in collecting sand.

2. A sand casting machine according to claim 1, characterized in that: The sand cleaning unit is divided into a sand screening component and a sand filtering component. The sand screening component is used to shake off the sand blocks to facilitate the subsequent recovery of the sand. The sand filtering component is used to filter the iron slag remaining in the sand to prevent the sand from being mixed with iron slag when the sand is recovered, thereby playing the role of filtering the residue.

3. A sand casting machine according to claim 2, characterized in that: The sand screening assembly comprises a sand screening plate (10) and a convex shaft (24); the wall edge of the sand screening plate (10) is slidably connected to the inner wall of the casing (1); the convex shaft (24) is disposed directly below the sand screening plate (10); a sand screening motor (9) is fixedly mounted on one end of the sand screening plate (10); and the sand screening motor (9) is disposed outside the casing (1).

4. A sand casting machine according to claim 3, characterized in that: The sand filter assembly comprises an electromagnetic box (26), the electromagnetic box (26) being placed at the bottom of the inner wall of the casing (1), the electromagnetic box (26) being placed below the convex shaft (24), a magnetic block (30) being fixedly mounted on the inner wall of the electromagnetic box (26), and sand retaining plates (25) being fixedly mounted on both sides of the electromagnetic box (26).

5. A sand casting machine according to claim 4, characterized in that: A drawer box (27) is provided at the bottom of the electromagnetic box (26), and the drawer box (27) is slidably connected to the inner wall of the casing (1).

6. A sand casting machine according to claim 3, characterized in that: The inner wall of the casing (1) is symmetrically rotatably provided with a sand dividing and rotating plate (11), the inner wall of the casing (1) is symmetrically fixedly provided with a support plate (29), the inner wall of the casing (1) is symmetrically rotatably connected with a sand sliding plate (28), the two sand sliding plates (28) are respectively overlapped with one end of the two support plates (29), and the wall edges of the two sand dividing and rotating plates (11) are respectively slidably connected with one end of the two sand sliding plates (28).

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