Equipment and process for recycling molding sand for metal castings

Abstract

The present invention provides a molding sand recovery and reuse device and process for metal casting casting, which relates to the field of molding sand recovery, including: a moving part, the moving part is a rectangular plate structure, the support rod is a rectangular structure, two push heads are fixed on the outside of each support rod, the push head is an inclined structure, the outer end of the push head is an arc structure, and the push head is made of metal. The driving part drives the Z-shaped shaft to rotate, so that the Z-shaped shaft rotates and moves inside the slide slot, conveniently controls the reciprocating movement of the moving part, drives the support rod and the push head to reciprocate together, so that the push head moves laterally inside the top part, and pushes the crushed molding sand laterally, and the outer end of the push head is an arc structure, which will not cause wear after contacting with the molding sand and metal residues, thereby improving the service life, and solving the problem that when the molding sand recovery and reuse equipment is crushing the discarded molding sand, the metal residue inside the molding sand will cause greater wear on the crushing structure, affecting the service life.

Description

Technical Field

[0001] The invention relates to the technical field of molding sand recovery, and in particular to a molding sand recovery and reuse device and process for metal castings. Background Art

[0002] When casting metal castings, molding sand is usually needed. After the molding sand is used, it will produce waste gas, which will cause a lot of waste. At this time, molding sand recovery and reuse equipment is needed to improve the utilization rate of the molding sand.

[0003] When the existing sand recovery and reuse equipment for metal castings is used, when the discarded sand is crushed, the metal residue inside the sand will cause greater wear on the crushing structure, affecting the service life. If the sand is large in volume, it will take a lot of effort to crush it. When magnetically separating the metal residue, it is more difficult to collect and recycle. Summary of the invention

[0004] In view of this, the present invention provides a device and process for recovering and reusing molding sand for metal castings, so as to solve the problem that when the existing equipment for recovering and reusing molding sand for metal castings is in use and the waste molding sand is crushed, the metal residue inside the molding sand will cause greater wear of the crushing structure and shorten the service life.

[0005] The present invention provides a device and process for recycling molding sand for metal castings, which specifically comprises: a main body; the main body is a cylindrical tubular structure, a support member is provided at the bottom of the main body, a top member is fixed at the top of the main body, an inner plate is installed on both sides of the top member, the inner plate is a U-shaped structure, two inner plates are provided, uniformly arranged inner rods are fixed between the two inner plates, the inner rods are composed of rectangular rods and conical rods, and the inner rods are made of metal; a moving part, the moving part is a rectangular plate-shaped structure, the moving part is made of metal, the moving part is installed at the top of the main body, and uniformly staggered support rods are provided in the middle position inside the moving part, the support rods are rectangular in structure, the support rods are made of metal, and the outer side of each support rod Two pushing heads are fixed, the pushing heads are inclined structures, the outer ends of the pushing heads are arc-shaped structures, and the pushing heads are made of metal; the magnetic selector is a rectangular structure, the magnetic selector is made of magnet material, the magnetic selector is inserted and installed inside the main body, the inside of the magnetic selector is provided with evenly arranged square holes, a displaceable force-bearing plate is installed on both sides of the top of the magnetic selector, each force-bearing plate is provided with a guide groove on both sides, the guide groove is a rectangular frame structure, the inner side of the guide groove is an inclined structure, an inner groove is provided inside each force-bearing plate, a baffle is inserted into the inside of each inner groove, the baffle is an L-shaped structure, the baffle is inclined, a round hole is provided at the bottom of the baffle, and the top of the baffle is inserted into the top of the guide groove.

[0006] Optionally, a bottom groove is provided at the bottom of the main body, and the bottom groove is a rectangular structure. An auxiliary part is provided in the middle position of the main body, and openings are provided on both sides of the auxiliary part, and a magnetic selection part is inserted into the bottom end of the opening; a driving part is fixed to the top side of the main body, and the driving part is a servo motor body. The top of the driving part is connected to a Z-shaped axis, and the top part is a rectangular frame structure. A long groove is respectively provided at the bottom of both sides of the top part, and a moving part is inserted into the long groove. A U-shaped plate is fixed to the outside of each inner plate through two rectangular blocks, and a force-bearing part is fixed to the outer bottom end of each U-shaped plate. The force-bearing part is a T-shaped structure, and the bottom end of the force-bearing part is a cylindrical structure.

[0007] Optionally, a slide groove is provided on the top side of the movable member, and the slide groove is a rectangular structure. A Z-shaped shaft is inserted into the interior of the slide groove. A top block is fixed on both sides of the top of the movable member, and the top block is a semi-cylindrical structure and is made of metal. The top of the top block is in sliding contact with the bottom end of the force-bearing member; the interior of the movable member is provided with evenly arranged through holes, and the through holes are a rectangular structure. Two outer rods are fixed on both sides of the movable member, and the outer rods are L-shaped structures and are made of metal; there are four outer rods in total, and a bottom piece is fixed to the bottom of the four outer rods, and the bottom piece is a rectangular frame structure. The inner sides of the bottom piece are inclined structures, and a filter element is fixed inside the bottom piece, and the filter element is a fine filter cloth.

[0008] Optionally, a collecting piece is fixed on each side of the magnetic separator, and the collecting piece is a rectangular structure. The inner side of the collecting piece is an inclined structure. The outer end of the collecting piece is provided with a freely openable sealing door. A connecting block is fixed on each side of each collecting piece, and the connecting block is a U-shaped structure. An outer rod is inserted into the outer end of the connecting block. Two pull rods are fixed to the top of each side of the magnetic separator, and the pull rods are L-shaped structures. Every two pull rods are symmetrically arranged, and the inner ends of the pull rods are cylindrical structures. The force-bearing plates are rectangular structures, and the force-bearing plates are made of plastic. The inner groove is an L-shaped structure, and a round rod is provided inside each inner groove. A spring is mounted on the outside of each round rod, and the round rod is inserted into the round hole of the baffle. The top of the spring contacts the bottom of the baffle. Two auxiliary plates are fixed on the inner side of each force-bearing plate. The auxiliary plates are arc-shaped plate structures, and the auxiliary plates are installed inside the opening of the auxiliary piece.

[0009] Optionally, include the following steps:

[0010] 01. First control the driving part to operate, then add the waste molding sand to the inside of the top part, so that the top of the inner rod moves up and down, punctures the molding sand, reduces the volume of the molding sand, and improves the crushing efficiency. At the same time, when the moving part moves back and forth, it drives the support rod and the push head to move back and forth together, so that the push head pushes the crushed molding sand from the side;

[0011] 02. The crushed molding sand and metal residues fall onto the top of the magnetic separator through the through hole, and the collector is connected to the outer rod through the connecting block, so that the magnetic separator is forced to move back and forth together, so that the metal residues can be adsorbed and collected by the magnetic separator;

[0012] 03. At the same time, when the magnetic separator moves back and forth, it will drive the pull rod to move together, so that the inner end of the pull rod will slide and contact with the side of the baffle, and move inside the guide groove. Since the inner end of the guide groove is an inclined structure, the force plate drives the baffle to rise, and the opening is opened, so that the magnetic separator drives the metal residue to be discharged together, so that the metal residue is blocked outside the main body, and then the magnetic separator moves in the opposite direction, so that the metal residue can be easily taken out. After the metal residue flows through, it is convenient to enter the collection part for collection and storage;

[0013] 04. The molding sand will pass through the square hole of the magnetic separator, causing the molding sand to fall into the inside of the filter, causing the filter to move back and forth with the outer rod, so that the filter will screen the molding sand;

[0014] 05. Then control the molding sand to be added into the firing equipment, set the temperature to 400℃, and then add it into the high temperature firing equipment for secondary firing, set the temperature to 800℃;

[0015] 06. Then control the molding sand to be added into the cooling equipment, set the cooling time to 2h, and reduce the molding sand temperature to 0-50 degrees Celsius. At this point, the recycling and reuse of the molding sand is completed.

[0016] The beneficial effects are:

[0017] 1. By setting the inner plate and the inner rod, when the device is in use, after the molding sand is added into the top piece, the moving piece moves back and forth, and the force-bearing piece can be pushed up and down by the top block, so that the inner rod can move back and forth up and down, so that the molding sand first contacts with the inner rod to receive force. Since the inner rod is composed of a rectangular rod and a conical rod, after it contacts with the molding sand, it can be initially crushed, so that it can reduce its volume, thereby improving the crushing efficiency;

[0018] 2. By setting a support rod and a push head, when the device is in use, the driving member drives the Z-shaped shaft to rotate, so that the Z-shaped shaft can rotate and move inside the slide slot, thereby conveniently controlling the reciprocating movement of the moving member. While reciprocating, the support rod and the push head can be driven to reciprocate together, so that the push head can move laterally inside the top member, thereby laterally pushing and crushing the molding sand, thereby conveniently crushing the molding sand, and the outer end of the push head is an arc structure, so that after it contacts the molding sand and metal residues, it will not be worn, thereby increasing the service life;

[0019] 3. By setting the guide groove and the baffle, when the device is in use, when the moving part drives the outer rod to move back and forth, it will drive the magnetic separator to move back and forth through the connecting block, so that the crushed molding sand and metal residues fall down, and the metal residues can be adsorbed and collected by the magnetic separator. At the same time, when the magnetic separator moves back and forth, it will drive the pull rod to move together, so that the inner end of the pull rod can slide in contact with the side of the baffle, and then move inside the guide groove. Since the inner end of the guide groove is an inclined structure, the force plate can drive the baffle to rise, and then open the opening, so that the magnetic separator can drive the metal residue to be discharged together. When the pull rod moves to the outer end of the bottom of the guide groove, the force plate and the auxiliary plate can fall down by their own gravity, so that the metal residue can be blocked outside the main body, and then the magnetic separator moves in the opposite direction, so that the metal residue can be easily taken out. At the same time, the pull rod slides in contact with the outer side of the baffle, so that the baffle can automatically shrink inward under force, so that after the metal residue flows through, it can be easily entered into the collection component for collection and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0021] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the recycling equipment of an embodiment of the present invention.

[0024] Figure 2 It is a bottom view structural schematic diagram of the recycling device of an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the exploded three-dimensional structure of the recycling equipment of an embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the exploded bottom view structure of the recycling device of an embodiment of the present invention.

[0027] Figure 5 It is a schematic diagram of the main body exploded three-dimensional structure of the recycling equipment of an embodiment of the present invention.

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the moving parts of the recycling equipment according to an embodiment of the present invention.

[0029] Figure 7 It is a schematic diagram of the exploded three-dimensional and partially enlarged structure of the magnetic separator of the recycling equipment according to the embodiment of the present invention.

[0030] Figure 8It is a schematic diagram of the exploded bottom view of the magnetic selection component of the recycling device according to an embodiment of the present invention.

[0031] Reference numerals list

[0032] 1. Main body; 101. Bottom groove; 102. Auxiliary parts; 103. Driving parts; 104. Top parts; 105. Inner plate; 106. Inner rod; 107. Force-bearing parts;

[0033] 2. Moving part; 201. Slide; 202. Top block; 203. Through hole; 204. Support rod; 205. Push head; 206. External rod; 207. Bottom part; 208. Filter;

[0034] 3. Magnetic selection component; 301. Collecting component; 302. Connecting block; 303. Pull rod; 304. Force plate; 305. Guide groove; 306. Inner groove; 307. Baffle; 308. Auxiliary plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0036] Example: Please refer to Figures 1 to 8 As shown:

[0037] The present invention provides a device and process for recycling molding sand for metal castings, comprising a main body 1; the main body 1 is a cylindrical tubular structure, a support member is provided at the bottom of the main body 1, a top member 104 is fixed at the top of the main body 1, an inner plate 105 is installed on both sides of the top member 104, the inner plate 105 is a U-shaped structure, two inner plates 105 are provided, and are used to support inner rods 106 for use, and evenly arranged inner rods 106 are fixed between the two inner plates 105, and the inner rods 106 are composed of rectangular rods and conical rods, so that after the molding sand is initially added, it can contact the top of the inner rod 106, so that the inner rod 106 can Its crushing can reduce its volume and improve crushing efficiency. The inner rod 106 is made of metal; the moving part 2 is a rectangular plate-shaped structure. The moving part 2 is made of metal. The moving part 2 is installed at the top of the main body 1. The middle position of the inner part of the moving part 2 is provided with evenly staggered support rods 204. The support rods 204 are rectangular structures. The support rods 204 are made of metal and are used to support the push heads 205. Two push heads 205 are fixed on the outside of each support rod 204. The push heads 205 are inclined structures. The outer ends of the push heads 205 are arc-shaped structures. The push heads 205 are made of metal. It can contact the side of the molding sand, thereby pushing the molding sand to break, improving the crushing efficiency, avoiding the wear of the pushing head 205 caused by metal residues, and improving the service life of the device; the magnetic selection part 3, the magnetic selection part 3 is a rectangular structure, the magnetic selection part 3 is made of magnet material, the magnetic selection part 3 is inserted and installed inside the main body 1, and the interior of the magnetic selection part 3 is provided with evenly arranged square holes, so that the crushed molding sand can fall, and a displaceable force plate 304 is installed on both sides of the top of the magnetic selection part 3, and a guide groove 305 is provided on both sides of each force plate 304, and the guide groove 305 is a rectangular frame structure. The inner side is an inclined structure, so that the pull rod 303 can be guided and displaced inside it, thereby conveniently controlling the rise of the force-bearing plate 304 and the auxiliary plate 308, so that the opening can be easily opened, and the metal residue can be easily discharged and collected. An inner groove 306 is provided inside each force-bearing plate 304, and a baffle 307 is inserted into the interior of each inner groove 306. The baffle 307 is an L-shaped structure. The baffle 307 is inclined and can slide in contact with the pull rod 303, so that the baffle 307 can automatically retract under force. A round hole is provided at the bottom of the baffle 307, and the top of the baffle 307 is inserted into the top of the guide groove 305.

[0038] refer to Figure 5The bottom of the main body 1 is provided with a bottom groove 101, which is a rectangular structure, so that the bottom piece 207 and the filter 208 can move inside it, so that the filter 208 can conveniently screen the molding sand. An auxiliary piece 102 is provided in the middle of the main body 1, and openings are provided on both sides of the auxiliary piece 102. A magnetic separator 3 is inserted into the bottom end of the opening, so that the magnetic separator 3 can be magnetically separated inside it; a driving piece 103 is fixed to the top side of the main body 1, and the driving piece 103 is a servo motor body, and the top of the driving piece 103 is connected to a Z-shaped shaft, It is used to be inserted into the interior of the slide groove 201 so that the movable member 2 can be forced to move back and forth. The top member 104 is a rectangular frame structure. A long groove is provided at the bottom of both sides of the top member 104. The movable member 2 is inserted into the inside of the long groove so that the movable member 2 can be guided to slide. A U-shaped plate is fixed to the outside of each inner plate 105 through two rectangular blocks. A force-bearing member 107 is fixed to the outer bottom end of each U-shaped plate. The force-bearing member 107 is a T-shaped structure, and the bottom end of the force-bearing member 107 is a cylindrical structure, which is used to slide in contact with the top block 202.

[0039] refer to Figure 6 A slide groove 201 is provided on the top side of the moving part 2. The slide groove 201 is a rectangular structure. A Z-shaped shaft is inserted into the slide groove 201, which can make the slide groove 201 bear force, so that the moving part 2 can move back and forth. A top block 202 is fixed on both sides of the top of the moving part 2. The top block 202 is a semi-cylindrical structure. The top block 202 is made of metal. The top of the top block 202 is in sliding contact with the bottom end of the force-bearing member 107, which can easily push the force-bearing member 107 to move back and forth up and down; the inside of the moving part 2 is provided with evenly arranged through holes 203, and the through holes 203 are rectangular. shaped structure, so that the crushed molding sand can be discharged together with the metal residue. Two outer rods 206 are fixed on both sides of the moving part 2. The outer rods 206 are L-shaped structures. The outer rods 206 are made of metal and can support the bottom piece 207 for use. There are four outer rods 206 in total. A bottom piece 207 is fixed at the bottom of the four outer rods 206. The bottom piece 207 is a rectangular frame structure. The inner sides of the bottom piece 207 are inclined structures. A filter 208 is fixed inside the bottom piece 207. The filter 208 is a fine filter screen cloth that can filter the molding sand.

[0040] refer to Figure 7 and Figure 8A collecting piece 301 is fixed on each side of the magnetic separator 3. The collecting piece 301 is a rectangular structure. The inner side of the collecting piece 301 is an inclined structure, which can control the metal residue to be guided for circulation and collection. The outer end of the collecting piece 301 is provided with a sealing door that can be opened freely, so that the metal residue can be easily taken out. A connecting block 302 is fixed on each side of each collecting piece 301. The connecting block 302 is a U-shaped structure. An outer rod 206 is inserted into the outer end of the connecting block 302, so that the outer rod 206 can drive the connecting block 302 to move back and forth together; two pull rods 303 are fixed on the top of each side of the magnetic separator 3. The pull rods 303 are L-shaped structures. Every two pull rods 303 are symmetrically arranged. The inner ends of the pull rods 303 are cylindrical structures, which can be Insert into the internal guide displacement of the guide groove 305, and then conveniently control the force-bearing plate 304 to drive the auxiliary plate 308 to move together. The force-bearing plate 304 is a rectangular structure and is made of plastic; the inner groove 306 is an L-shaped structure, so that the baffle 307 can freely expand and contract therein, and each inner groove 306 is provided with a round rod inside, and a spring is mounted on the outside of each round rod. The round rod is inserted into the round hole of the baffle 307, and the top of the spring contacts the bottom of the baffle 307. Two auxiliary plates 308 are fixed on the inner side of each force-bearing plate 304. The auxiliary plate 308 is an arc-shaped plate structure. The auxiliary plate 308 is installed inside the opening of the auxiliary part 102 and can move up and down, thereby blocking the metal residue and facilitating the removal of the metal residue.

[0041] Optionally, include the following steps:

[0042] 01. First, control the driving member 103 to operate, then add the waste molding sand into the interior of the top member 104, so that the top of the inner rod 106 moves up and down, punctures the molding sand, reduces the volume of the molding sand, and improves the crushing efficiency. At the same time, while the moving member 2 moves back and forth, it drives the support rod 204 and the push head 205 to move back and forth together, so that the push head 205 pushes the crushed molding sand from the side;

[0043] 02. The crushed molding sand and metal residues fall onto the top of the magnetic separator 3 through the through hole 203, and the collecting member 301 is connected to the outer rod 206 through the connecting block 302, so that the magnetic separator 3 is forced to reciprocate together, so that the metal residues can be adsorbed and collected by the magnetic separator 3;

[0044] 03. At the same time, when the magnetic separator 3 moves back and forth, it will drive the pull rod 303 to move together, so that the inner end of the pull rod 303 slides and contacts with the side of the baffle 307, and moves inside the guide groove 305. Since the inner end of the guide groove 305 is an inclined structure, the force plate 304 drives the baffle 307 to rise, and the opening is opened, so that the magnetic separator 3 drives the metal residue to be discharged together, so that the metal residue is blocked outside the main body 1, and then the magnetic separator 3 moves in the opposite direction, so that the metal residue can be easily taken out. After the metal residue flows through, it is convenient to enter the collection part 301 for collection and storage;

[0045] 04. The molding sand will pass through the square hole of the magnetic separator 3, so that the molding sand falls into the inside of the filter 208, so that the filter 208 moves back and forth with the outer rod 206, so that the filter 208 screens the molding sand;

[0046] 05. Then control the molding sand to be added into the firing equipment, set the temperature to 400℃, and then add it into the high temperature firing equipment for secondary firing, set the temperature to 800℃;

[0047] 06. Then control the molding sand to be added into the cooling equipment, set the cooling time to 2h, and reduce the molding sand temperature to 0-50 degrees Celsius. At this point, the recycling and reuse of the molding sand is completed.

[0048] Specific usage and function of this embodiment: In the present invention, when it is necessary to use this device, the driving member 103 can be controlled to operate first, so that the driving member 103 can drive the Z-shaped shaft to rotate, so that the Z-shaped shaft can be displaced inside the slide groove 201, so that the slide groove 201 can be subjected to force, and then the moving member 2 can reciprocate left and right. While reciprocating, it will drive the top block 202 to move together, so that the top block 202 can reciprocate through the bottom of the force-bearing member 107, so that the force-bearing member 107 drives the inner rod 106 to be forced to move up and down, and then the waste molding sand is added to the inside of the top member 104, so that the top of the inner rod 106 can move up and down The movable part 201 can move and then puncture the molding sand, so that the molding sand can reduce its volume, thereby improving the crushing efficiency. At the same time, when the movable part 2 moves back and forth, it can drive the support rod 204 and the push head 205 to move back and forth together, so that the push head 205 can push the crushed molding sand from the side, thereby improving the crushing efficiency. At the same time, it can avoid the metal residue inside the molding sand causing the wear of the device, thereby improving the service life. The crushed molding sand and metal residue fall on the top of the magnetic selection part 3 through the through hole 203, and the collecting part 301 is connected to the outer rod 206 through the connecting block 302, so that the magnetic selection part 3 can be reciprocated by force together, so that the metal residue can be magnetically The magnetic selection part 3 is adsorbed and collected. At the same time, when the magnetic selection part 3 moves back and forth, it will drive the pull rod 303 to move together, so that the inner end of the pull rod 303 can slide and contact with the side of the baffle 307, and then move inside the guide groove 305. Since the inner end of the guide groove 305 is an inclined structure, the force plate 304 can drive the baffle 307 to rise, and then open the opening, so that the magnetic selection part 3 can drive the metal residue to be discharged together. When the pull rod 303 moves to the outer end of the bottom of the guide groove 305, the force plate 304 and the auxiliary plate 308 can fall by their own gravity, so that the metal residue can be blocked outside the main body 1, and then The magnetic separator 3 moves in the opposite direction, so that the metal residue can be easily removed. At the same time, the pull rod 303 slides in contact with the outer side of the baffle 307, so that the baffle 307 can automatically shrink under the force, so that after the metal residue flows through, it can easily enter the interior of the collecting component 301 for collection and storage, and the molding sand will pass through the square hole of the magnetic separator 3, so that the molding sand can fall into the interior of the filter element 208, so that the filter element 208 can move back and forth with the outer rod 206, so that the filter element 208 can screen the molding sand, thereby completing the preliminary recovery and reuse of the molding sand, and then the molding sand is fired, and then the molding sand is controlled to cool, and then it is made into finished molding sand again.

[0049] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A sand recovery and recycling device for metal casting, characterized in that: include: A cylindrical tubular structure body; A support member is provided at the bottom, and a top member is fixed at the top. A U-shaped inner plate is installed on both sides of the top member, and evenly arranged inner rods are fixed between the two inner plates; a moving member with a rectangular plate structure is installed at the top of the main body, and evenly staggered support rods are provided in the middle position inside the moving member, and two pushing heads are fixed on the outside of the support rods; a magnetic selection member with a rectangular structure is made of a magnet material and is inserted and installed inside the main body. Evenly arranged square holes are provided inside the magnetic selection member, and a displaceable force-bearing plate is installed on both sides of the top. A guide groove of a rectangular frame structure is provided on both sides of the force-bearing plate, and the inner side of the guide groove is an inclined structure. An inner groove of an L-shaped structure is provided inside the force-bearing plate, and an L-shaped baffle is inserted into the inner groove. The baffle is inclined, and a round hole is provided at the bottom of the baffle, and the top is inserted into the top of the guide groove. A round rod is provided inside the inner groove, and a spring is mounted on the outside of the round rod. The round rod is inserted into the round hole of the baffle, and the top of the spring contacts the bottom of the baffle; An auxiliary part is arranged in the middle of the main body, openings are arranged on both sides of the auxiliary part, a magnetic selector is inserted into the bottom of the opening, a driving part is fixed on the top side of the main body, the top of the driving part is connected to the Z-shaped shaft, a long groove is arranged on the bottom of both sides of the top part, a moving part is inserted into the long groove, a U-shaped plate is fixed on the outside of the inner plate through two rectangular blocks, a force-bearing part is fixed on the outside bottom of the U-shaped plate, the force-bearing part is a T-shaped structure, and the bottom of the force-bearing part is a cylindrical structure; A rectangular slide groove is arranged on the top side of the moving part, a Z-shaped shaft is inserted into the slide groove, a top block is fixed on both sides of the top of the moving part, the top of the top block is in sliding contact with the bottom of the force-bearing part, and two outer rods are fixed on both sides of the moving part; A collecting piece is fixed on both sides of the magnetic separator, and a U-shaped connecting block is fixed on both sides of the collecting piece. An outer rod is inserted into the outer end of the connecting block. Two L-shaped pull rods are fixed on the top of both sides of the magnetic separator. Every two pull rods are symmetrically arranged. The inner ends of the pull rods are cylindrical structures. Two auxiliary plates with arc-shaped plate structures are fixed on the inner side of the force-bearing plate. The auxiliary plates are installed inside the opening of the auxiliary piece and can move up and down. When in use, the driving member drives the Z-shaped axis to rotate, so that the Z-shaped axis is displaced inside the slide groove, the moving member moves back and forth left and right, driving the top block to move back and forth, so that the force-bearing member drives the inner rod to move back and forth up and down under force, so that the top of the inner rod moves up and down, puncturing the molding sand, and at the same time drives the support rod and the pushing head to move back and forth together, so that the pushing head pushes the broken molding sand from the side, and the collecting member is connected to the outer rod through the connecting block, so that the magnetic selector moves back and forth under force, driving the pull rod to move, and the inner end of the pull rod is inserted into the internal guide movement of the guide groove. Since the inner end of the guide groove is an inclined structure, the pull rod causes the force-bearing plate to drive the auxiliary plate to rise, open the opening, and cause the magnetic selector to drive the metal residue to be discharged together, and when the pull rod moves to the outer end of the bottom of the guide groove, the force-bearing plate and the auxiliary plate fall down by their own gravity, the magnetic selector moves in the opposite direction, and the pull rod slides in contact with the outer side of the baffle, causing the baffle to automatically retract under force.

2. The equipment for recycling and reusing molding sand for metal castings as claimed in claim 1, characterized in that: The driving component is a servo motor body, and the top component is a rectangular frame structure.

3. A sand recovery and recycling device for metal castings as claimed in claim 2, characterized in that: The top block is a semi-cylindrical structure and is made of metal.

4. The equipment for recycling and reusing molding sand for metal castings as claimed in claim 1, characterized in that: The interior of the moving part is provided with evenly arranged through holes, the through holes are of a rectangular structure, the outer rod is of an L-shaped structure, and the outer rod is made of metal.

5. The equipment for recycling and reusing molding sand for metal castings as claimed in claim 4, characterized in that: There are four outer rods in total, and a bottom piece is fixed at the bottom of the four outer rods. The bottom piece is a rectangular frame structure, and the inner two sides of the bottom piece are inclined structures. A filter piece is fixed inside the bottom piece, and the filter piece is a fine filter screen cloth.

6. A sand recovery and recycling device for metal castings as claimed in claim 5, characterized in that: The collecting piece is a rectangular structure, the inner side of the collecting piece is an inclined structure, and the outer end of the collecting piece is provided with a sealing door that can be opened freely.

7. The equipment for recycling and reusing molding sand for metal castings as claimed in claim 1, characterized in that: The force-bearing plate is a rectangular structure and is made of plastic.

8. A molding sand recycling process using the equipment described in any one of claims 1 to 7, characterized in that: The following steps are involved:

01. First control the driving part to operate, then add the waste molding sand into the inside of the top part, so that the top of the inner rod moves up and down, punctures the molding sand, reduces the volume of the molding sand, and improves the crushing efficiency. At the same time, when the moving part moves back and forth, it drives the support rod and the push head to move back and forth together, so that the push head pushes the crushed molding sand from the side; 02. The crushed molding sand and metal residues fall onto the top of the magnetic separator through the through hole, and the collector is connected to the outer rod through the connecting block, so that the magnetic separator is forced to move back and forth together, so that the metal residues can be adsorbed and collected by the magnetic separator; 03. At the same time, when the magnetic selector moves back and forth, it will drive the pull rod to move, so that the inner end of the pull rod slides and contacts the side of the baffle, and moves inside the guide groove. Since the inner end of the guide groove is an inclined structure, the pull rod causes the force-bearing plate to drive the auxiliary plate to rise, and the opening is opened, so that the magnetic selector drives the metal residue to be discharged together. When the pull rod moves to the outer end of the bottom of the guide groove, the force-bearing plate and the auxiliary plate fall down by their own gravity, and then the magnetic selector moves in the opposite direction, and the pull rod slides and contacts the outer side of the baffle, so that the baffle is automatically forced to retract; 04. The molding sand will pass through the square hole of the magnetic separator, causing the molding sand to fall into the inside of the filter, causing the filter to move back and forth with the outer rod, so that the filter will screen the molding sand; 05. Then control the molding sand to be added into the firing equipment, set the temperature to 400℃, and then add it into the high temperature firing equipment for secondary firing, set the temperature to 800℃; 06. Then control the molding sand to be added into the cooling equipment, set the cooling time to 2h, and reduce the molding sand temperature to 0-50 degrees Celsius. At this point, the recycling and reuse of the molding sand is completed.

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