Sand making machine and sand shaping device and method

Abstract

The invention provides a sand making and sand shaping device and method, which belongs to the technical field of sand making machines. The structure comprises a frame, and an outer seat assembly is arranged on the top surface of the frame, and an outer grinding disc assembly is movably sleeved in the cavity of the outer seat assembly, and an inner grinding core group is sleeved in the middle of the cavity of the outer grinding disc assembly to form a connected material storage cavity and an abrasive cavity, and the driving end is used as the total power source, so that the outer grinding cone surface of the inner grinding core group and the inner grinding cone surface of the outer grinding disc assembly can be intermittently rotated with time staggered to grind and shape the machine-made sand in the abrasive cavity, so that double-sided grinding and shaping of sand in the abrasive cavity is achieved, and the double-sided grinding and shaping makes the machine-made sand more comprehensively polished, and compared with the synchronous rotation of the inner grinding cone surface and the outer grinding cone surface, which is easier to carry away the machine-made sand, the resistance of the machine-made sand will be relatively large in this intermittent single-sided rotation, and it is easier to grind and shape, and the grinding and shaping effect is better.

Description

Technical Field

[0001] The invention relates to a sand making machine sand shaping device and method, and belongs to the technical field of sand making machines. Background Art

[0002] Artificial sand refers to sand processed by sand making machines and other ancillary equipment. In recent years, with the increasing demand for sand and gravel aggregates in the construction industry, artificial sand refers to rock, mine tailings or industrial waste particles with a particle size of less than 4.75 mm that have been processed by soil removal, mechanical crushing and screening.

[0003] However, the production process of machine-made sand determines that the machine-made sand itself has many edges and corners and irregular shapes. It generally contains a lot of needle-like particles, and the surface is rough, the bite force between each other is large, and the flow resistance is relatively large, which makes the fluidity of the mortar worse. This is because the machine-made sand with strong edges and corners is easier to overlap, resulting in greater friction resistance. Natural sand particles are washed and polished by water for a long time, and the sharp protrusions on the edges of the particles are abraded, presenting a smooth spherical particle shape, making the surface of natural sand smooth and round, the edges and corners are blunted, and the sphericity is high, which ultimately helps to form good fluidity during mixing. The machine-made sand particles obtained by direct mechanical crushing lack this long-term grinding and shaping process, so they are irregular in shape of rods and flakes, which are not convenient for direct use. In response to the above needs, the present invention proposes a sand-making machine-made sand shaping device and method. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a sand making and sand shaping device and method for solving the existing problems.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a sand making and sand shaping device, the structure of which includes a frame, and an outer seat assembly is arranged on the top surface of the frame, and an outer grinding disc assembly is movably sleeved in the cavity of the outer seat assembly, an inner grinding core group is sleeved in the middle of the cavity of the outer grinding disc assembly, and the lower end of the inner grinding core group is fixedly sleeved on the middle part of the bottom surface of the outer seat assembly, a driving end is vertically arranged on the right side of the lower end of the outer seat assembly, a screening assembly is arranged below between the outer grinding disc assembly and the inner grinding core group, a powder discharge hopper is arranged below the screening assembly, a feeding hopper is arranged above the inner grinding core group, an intermittent gear meshing transmission is arranged between the right side of the lower end of the outer grinding disc assembly and the upper end of the driving end, an intermittent gear meshing transmission is arranged between the right side of the lower end of the inner grinding core group and the middle of the driving end, and a transmission connection is arranged between the upper end of the screening assembly and the lower end of the driving end;

[0006] When the driving end and the outer grinding disc assembly are meshing and transmitting, the meshing and transmitting between the inner grinding core assembly and the driving end is intermittently disengaged;

[0007] The inner grinding core group includes a discharge seat, and a grinding core is sleeved through the middle of the discharge seat, and a transmission component is arranged at the lower end of the grinding core. The right end of the transmission component is meshed with the intermittent gear in the middle of the driving end for transmission.

[0008] A further improvement is that the outer seat assembly includes an outer seat body, and a rotating cavity is opened in the middle of the outer seat body, and a plurality of first spherical rotating seats are obliquely arranged on the cavity wall in the middle of the rotating cavity in a circular array, a plurality of second spherical rotating seats are obliquely arranged on the cavity wall at the lower end of the rotating cavity in a circular array, an inner grinding core group opening is opened through the middle of the lower end of the rotating cavity, a driving end opening is opened through the right side of the lower end of the rotating cavity, and a rotating disk is arranged around the top surface of the outer seat body.

[0009] A further improvement is that the outer grinding wheel assembly includes an outer grinding wheel body, and a material guiding outward expansion edge is opened in the middle part of the outer grinding wheel body cavity, and an inner grinding cone surface is opened at the lower end of the outer grinding wheel body cavity, and a first grinding tooth is obliquely arranged on the cone surface of the inner grinding cone surface in a circular array, a first arc-shaped rotating groove is opened around the middle part of the outer side wall of the outer grinding wheel body, and a second arc-shaped rotating groove is opened around the lower end of the outer side wall of the outer grinding wheel body, a toothed disk is sleeved on the tail of the lower end of the outer side of the outer grinding wheel body, and a fixed pressure edge for connecting with the top surface of the rotating disk is arranged on the outer side of the upper end of the outer grinding wheel body, and the outer grinding wheel body is made of high manganese steel.

[0010] A further improvement is that the discharge seat includes a material seat body, and a first bearing is embedded in the middle of the material seat body, and an inner guide edge and an outer guide edge are arranged on the inner and outer circumferences of the top surface of the material seat body, and a plurality of discharge ports are opened in a circular array on the material seat body between the inner guide edge and the outer guide edge, and a material guide triangular protrusion is arranged on the upper end between two adjacent discharge ports.

[0011] A further improvement is that the grinding core comprises a grinding core body, and an outer grinding cone surface is provided at the lower end of the grinding core body, and second grinding teeth are obliquely provided on the cone surface of the outer grinding cone surface in a circular array, a guide cone block is provided at the upper end of the grinding core body, a first rotating shaft is provided in the middle of the bottom surface of the grinding core body, and the grinding core body is made of high manganese steel;

[0012] An abrasive cavity is formed between the inner grinding cone surface and the outer grinding cone surface, and the lateral spacing of the abrasive cavity gradually decreases from top to bottom, and the lateral spacing of the abrasive cavity is 20 mm to 4.8 mm from top to bottom;

[0013] The lateral distance between the upper end of the outer grinding disc body cavity and the material guide cone block forms a material storage cavity communicated with the abrasive cavity.

[0014] A further improvement is that the transmission assembly includes a transmission support, and a second bearing and a second rotating shaft are embedded in the transmission support, and a first driven gear is sleeved on the middle part of the second rotating shaft body, and a first synchronous gear set is embedded on the upper end of the second rotating shaft body.

[0015] A further improvement is that the driving end includes a driving support, and a linkage shaft is vertically sleeved on the driving support, and the shaft body of the linkage shaft is sleeved with a first half gear, a driven bevel gear, a second half gear and a second synchronous gear set from top to bottom, and a motor is meshed on one side of the driven bevel gear, and a driving bevel gear meshed with the driven bevel gear is provided on the motor;

[0016] The first half gear is meshed with the intermittent gear on the right side of the gear plate for transmission, and the second half gear is meshed with the intermittent gear on the right end of the first driven gear for transmission.

[0017] A further improvement is that the screening assembly includes a screening support, and a third rotating shaft is vertically sleeved on the screening support, and an arc-shaped screen frame is provided at the lower end of the third rotating shaft, a mesh screen is provided on the arc-shaped surface of the lower end of the arc-shaped screen frame, a circular discharge partition is provided on the outer circle of the arc-shaped screen frame, and the left end of the second synchronous wheel group is sleeved on the upper end of the third rotating shaft.

[0018] A further improvement is that a conveyor belt is laterally connected to the frame below the screening assembly.

[0019] As a further improvement, the first synchronous wheel set and the second synchronous wheel set are both composed of a first synchronous belt pulley, a second synchronous belt pulley and a synchronous belt transmission connection.

[0020] In addition, the present invention also provides a method for the above-mentioned sand making machine sand shaping device, the method is as follows:

[0021] First, pour machine-made sand from the feed hopper, so that the machine-made sand expands outward and flows into the storage cavity under the action of the guide cone block, and is continuously introduced into the abrasive cavity for shaping under the action of the guide expansion edge. During shaping, the motor on the driving end rotates, and the driven bevel gear drives the bevel gear to rotate the linkage shaft, thereby synchronously driving the first half gear, the second half gear and the second synchronous wheel group to rotate to perform intermittent transmission drive on the outer grinding disc assembly and the inner grinding core group, and uninterrupted transmission drive on the screening assembly. When the driving end and the outer grinding disc assembly are meshed, the meshing transmission between the inner grinding core group and the driving end is intermittently disengaged, so that the intermittent rotation time of the grinding core and the outer grinding disc body is staggered, so as to achieve the outer grinding cone surface of the inner wall of the abrasive cavity during rotation. When the dynamic abrasive is being shaped, the inner grinding cone surface of the outer wall does not move. On the contrary, when the inner grinding cone surface is rotating to shape the abrasive, the outer grinding cone surface does not move, so that the inner grinding cone surface and the outer grinding cone surface are staggered in time to grind and shape the machine-made sand respectively. In addition, because the lateral spacing of the abrasive cavity is gradually reduced from 20mm to 4.8mm from top to bottom, the diameter of the machine-made sand finally discharged meets the standard, and the machine-made sand will fall into the middle area of ​​the rotating arc screen frame after being discharged, and under the centrifugal effect generated by the uninterrupted rotation of the arc screen frame, the broken powder generated during the grinding and shaping of the machine-made sand passes through the mesh screen and is discharged downward into the powder discharge hopper for external discharge, and the machine-made sand will be thrown outward to the circular discharge partition under the action of centrifugal force and discharged downward to the conveyor belt laterally connected to the lower end of the frame for outward transportation.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a sand making and machine-made sand shaping device and method. Through the set design of an outer grinding disc component and an inner grinding core component on an outer seat component, a connected material storage chamber and an abrasive chamber are formed. The driving end is used as the total power source, so that the outer grinding cone surface of the inner grinding core group and the inner grinding cone surface of the outer grinding disc component can be intermittently rotated with time staggered to grind and shape the machine-made sand in the abrasive chamber, thereby realizing double-sided grinding and shaping of the machine-made sand in the abrasive chamber. The double-sided grinding and shaping makes the machine-made sand more comprehensively ground. Compared with the synchronous rotation of the inner grinding cone surface and the outer grinding cone surface, which is more likely to carry away the machine-made sand, the intermittent single-sided rotation will have greater resistance to the machine-made sand, making it easier to grind and shape it, and achieving better grinding and shaping effects.

[0024] In addition, after the machine-made sand is ground as a whole, powder will be produced. The same driving end is used to drive the screening component in a linkage manner without increasing energy consumption. The screening component uses centrifugal force to rotate and screen the materials at the bottom of the grinding and shaping process to automatically separate the machine-made sand and powder in time, so that the machine-made sand and powder after grinding do not need to be screened in another process, shortening the process and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a structural schematic diagram of a sand making and shaping device of a sand making machine according to the present invention;

[0026] Figure 2 It is a schematic diagram of the outer seat assembly, the outer grinding disc assembly and the inner grinding core assembly of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the outer seat assembly of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the outer grinding disc assembly of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the inner grinding core assembly of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the discharge seat of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the transmission assembly of the present invention;

[0032] Figure 8 This is a schematic diagram of the driving end structure of the present invention;

[0033] Fig. 9 This is a schematic diagram of the structure of the screening component of the present invention;

[0034] Fig.10 It is an enlarged schematic diagram of part A of the present invention. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-Figure 10The present invention provides a sand making and sand shaping device and method: its structure includes a frame 1, and an outer seat assembly 2 is arranged on the top surface of the frame 1, and an outer grinding disc assembly 3 is movably sleeved in the cavity of the outer seat assembly 2, an inner grinding core group 4 is sleeved in the middle of the cavity of the outer grinding disc assembly 3, and the lower end of the inner grinding core group 4 is fixedly sleeved on the middle part of the bottom surface of the outer seat assembly 2, a driving end 5 is vertically arranged on the right side of the lower end of the outer seat assembly 2, a screening assembly 6 is arranged below the outer grinding disc assembly 3 and the inner grinding core group 4, a powder discharge hopper 7 is arranged below the screening assembly 6, a feeding hopper 8 is arranged above the inner grinding core group 4, and the outer grinding disc assembly 3 is provided with a plurality of materials. There is an intermittent gear meshing transmission between the right side of the lower end of the member 3 and the upper end of the driving end 5, there is an intermittent gear meshing transmission between the right side of the lower end of the inner grinding core group 4 and the middle part of the driving end 5, there is a transmission connection between the upper end of the screening assembly 6 and the lower end of the driving end 5, when the driving end 5 and the outer grinding disc assembly 3 are meshingly transmitted, the meshing transmission between the inner grinding core group 4 and the driving end 5 is intermittently disengaged, the inner grinding core group 4 includes a discharge seat 41, and a grinding core member 42 is penetrated and sleeved in the middle part of the discharge seat 41, and a transmission assembly 43 is provided at the lower end of the grinding core member 42, and the right end of the transmission assembly 43 is intermittently gear meshingly transmitted with the middle part of the driving end 5.

[0037] The outer seat assembly 2 includes an outer seat body 21, and a rotating cavity 22 is opened in the middle of the outer seat body 21, and a plurality of first spherical rotating supports 23 are obliquely arranged in a circular array on the cavity wall in the middle of the rotating cavity 22, and a plurality of second spherical rotating supports 24 are obliquely arranged in a circular array on the cavity wall at the lower end of the rotating cavity 22, an inner grinding core group opening 25 is opened through the middle of the lower end of the rotating cavity 22, a driving end opening 26 is opened through the right side of the lower end of the rotating cavity 22, and a rotating disk 27 is arranged around the top surface of the outer seat body 21.

[0038] The outer grinding wheel assembly 3 includes an outer grinding wheel body 31, and a material guiding outer expansion edge 32 is opened in the middle of the cavity of the outer grinding wheel body 31, and an inner grinding cone surface 33 is opened at the lower end of the cavity of the outer grinding wheel body 31, and the cone surface of the inner grinding cone surface 33 is obliquely arranged with first grinding teeth in a circular array, and a first arc-shaped rotating groove 34 is opened around the middle of the outer wall of the outer grinding wheel body 31, and a second arc-shaped rotating groove 35 is opened around the lower end of the outer wall of the outer grinding wheel body 31. A toothed disk 36 is sleeved on the tail of the lower end of the outer side of the outer grinding wheel body 31, and a fixed pressure edge 37 for connecting with the top surface of the rotating disk 27 is set on the outer side of the upper end of the outer grinding wheel body 31. The outer grinding wheel body 31 is made of high manganese steel.

[0039] The material discharge seat 41 includes a material seat body 411, and a first bearing 412 is embedded in the middle of the material seat body 411, and an inner guide edge 413 and an outer guide edge 414 are arranged on the inner and outer circumferences of the top surface of the material seat body 411, and a plurality of material discharge ports 415 are opened in a circular array on the material seat body 411 between the inner guide edge 413 and the outer guide edge 414, and a material guide triangular protrusion 416 is arranged at the upper end between two adjacent material discharge ports 415.

[0040] The grinding core component 42 includes a grinding core body 421, and an outer grinding cone surface 422 is opened at the lower end of the grinding core body 421, and a second grinding tooth is obliquely opened on the cone surface of the outer grinding cone surface 422 in a circular array, and a material guide cone block 423 is set at the upper end of the grinding core body 421, and a first rotating shaft 424 is set in the middle of the bottom surface of the grinding core body 421. The grinding core body 421 is made of high manganese steel. An abrasive cavity with a lateral spacing gradually decreasing from top to bottom is formed between the inner grinding cone surface 33 and the outer grinding cone surface 422, and the lateral spacing of the abrasive cavity is 20mm to 4.8mm from top to bottom. The lateral spacing between the upper end of the outer grinding disc body 31 and the material guide cone block 423 constitutes a storage cavity connected to the abrasive cavity.

[0041] The transmission assembly 43 includes a transmission support 431 , and a second bearing 432 and a second rotating shaft 433 are embedded in the transmission support 431 . A first driven gear 434 is sleeved in the middle of the second rotating shaft 433 , and a first synchronous gear set 435 is embedded in the upper end of the second rotating shaft 433 .

[0042] The driving end 5 includes a driving support 51, and a linkage shaft 52 is vertically sleeved on the driving support 51, and the shaft body of the linkage shaft 52 is respectively sleeved with a first half gear 53, a driven bevel gear 54, a second half gear 55 and a second synchronous gear set 56 from top to bottom, a motor 57 is meshed on one side of the driven bevel gear 54, and a driving bevel gear meshed with the driven bevel gear 54 is provided on the motor 57, the first half gear 53 is meshed with the intermittent gear on the right side of the toothed disc 36 for transmission, and the second half gear 55 is meshed with the intermittent gear on the right end of the first driven gear 434 for transmission.

[0043] The screening component 6 includes a screening support 61, and a third rotating shaft 62 is vertically sleeved on the screening support 61, and an arc-shaped screen frame 63 is provided at the lower end of the third rotating shaft 62, a mesh screen 64 is provided on the arc-shaped surface of the lower end of the arc-shaped screen frame 63, and a circular discharge partition 65 is provided on the outer circle of the arc-shaped screen frame 63, and the left end of the second synchronous wheel group 56 is sleeved on the upper end of the third rotating shaft 62.

[0044] Working principle:

[0045] First, pour machine-made sand from the feed hopper 8, so that the machine-made sand expands outwards and flows into the material storage cavity under the action of the guide cone block 423, and is continuously introduced into the abrasive cavity for shaping under the action of the guide expansion edge 32.

[0046] During shaping, the motor on the driving end 5 rotates, and the driven bevel gear 54 drives the bevel gear to rotate the linkage shaft 52, thereby synchronously driving the first half gear 53, the second half gear 55 and the second synchronous wheel group 56 to rotate to intermittently drive the outer grinding disc assembly 3 and the inner grinding core group 4, and continuously drive the screening assembly 6. When the driving end 5 is meshed with the outer grinding disc assembly 3, the meshing transmission between the inner grinding core group 4 and the driving end 5 is intermittently disengaged, so that the grinding core 42 and the outer grinding disc body 31 are intermittently rotated. The time difference is just right, so that when the outer grinding cone surface 422 of the inner wall of the abrasive cavity rotates to shape the abrasive, the inner grinding cone surface 33 of the outer wall does not move, and conversely, when the inner grinding cone surface 33 rotates to shape the abrasive, the outer grinding cone surface 422 does not move, so that the inner grinding cone surface 33 and the outer grinding cone surface 422 are staggered in time to grind and shape the machine-made sand respectively. The double-sided grinding and shaping makes the machine-made sand more comprehensive. Compared with the synchronous rotation of the inner grinding cone surface 33 and the outer grinding cone surface 422, it is easier to carry away the machine-made sand. With this intermittent single-sided rotation, the resistance of the machine-made sand will be relatively large, and it is easier to grind and shape.

[0047] It should be noted that when the outer grinding wheel body 31 is driven to rotate, the first arc-shaped rotating groove 34 on the outer grinding wheel body 31 will movably press each first spherical rotating support 23 to rotate, and the second arc-shaped rotating groove 35 will movably press each second spherical rotating support 24 to rotate, and the fixed pressure edge 37 at the upper end of the outer grinding wheel body 31 will pull the rotating disk 27 to follow the rotation, so that the outer grinding wheel body 31 will not shake or become unstable when the rotating grinding and shaping machine sand is subjected to force.

[0048] The grinding core 42 is driven by the first rotating shaft 424 to rotate on the first bearing 412 . According to actual needs, a plurality of first bearings 412 can be mounted on the first rotating shaft 424 to ensure more stable rotation of the grinding core 42 .

[0049] In addition, since the inner grinding conical surface 33 is provided with a first grinding tooth and the outer grinding conical surface 422 is provided with a second grinding tooth, when the inner grinding conical surface 33 and the outer grinding conical surface 422 rotate, the sharp protrusions and edges of the machine-made sand can be ground off.

[0050] In addition, since the lateral spacing of the abrasive cavity is gradually reduced from top to bottom to 20 mm to 4.8 mm, the diameter of the machine-made sand discharged at the end meets the standard, and the machine-made sand will fall into the middle area of ​​the rotating arc screen frame 63 after being discharged. When the machine-made sand flows from the upper end to the lower end of the abrasive cavity for grinding, a plurality of machine-made sands will be accumulated laterally in the cavity with a larger lateral spacing at the upper end of the abrasive cavity. During grinding, each machine-made sand will also produce mutual extrusion and friction for grinding and shaping.

[0051] It should be noted that after the material is discharged from the lower end of the abrasive chamber, it will first pass through the discharge seat 41, and the inner edge 413 and the outer edge 414 of the material guide, and multiple triangular protrusions 416 of the material guide assist in the design of each discharge port 415, so that the material passing through each discharge port 415 has a diversion effect, which can prevent the machine-made sand from staying on the top surface of the discharge seat 41.

[0052] Under the centrifugal effect generated by the uninterrupted rotation of the arc-shaped screen frame 63, the crushed powder generated during the grinding and shaping of the machine-made sand passes through the mesh screen 64 and is discharged downward into the powder discharge hopper 7 for external discharge, while the machine-made sand is thrown outward to the circular discharge partition 65 under the action of centrifugal force and discharged downward to the conveyor belt laterally connected to the lower end of the frame 1 for external transportation.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sand making and shaping device for a sand making machine, characterized in that: The structure comprises a frame (1), wherein an outer seat assembly (2) is arranged on the top surface of the frame (1), and an outer grinding disc assembly (3) is movably sleeved in the cavity of the outer seat assembly (2), an inner grinding core assembly (4) is sleeved in the middle of the cavity of the outer grinding disc assembly (3), and the lower end of the inner grinding core assembly (4) is fixedly sleeved on the middle part of the bottom surface of the outer seat assembly (2), a driving end (5) is vertically arranged on the right side of the lower end of the outer seat assembly (2), a screening assembly (6) is arranged below between the outer grinding disc assembly (3) and the inner grinding core assembly (4), a powder discharge hopper (7) is arranged below the screening assembly (6), and a feeding hopper (8) is arranged above the inner grinding core assembly (4), an intermittent gear meshing transmission is formed between the right side of the lower end of the outer grinding disc assembly (3) and the upper end of the driving end (5), an intermittent gear meshing transmission is formed between the right side of the lower end of the inner grinding core assembly (4) and the middle part of the driving end (5), and the upper end of the screening assembly (6) is transmission-connected with the lower end of the driving end (5); When the driving end (5) and the outer grinding disc assembly (3) are meshing and transmitting, the meshing and transmitting between the inner grinding core assembly (4) and the driving end (5) is intermittently disengaged; The inner grinding core group (4) comprises a discharge seat (41), a grinding core piece (42) is sleeved through the middle of the discharge seat (41), and a transmission assembly (43) is arranged at the lower end of the grinding core piece (42), and the right end of the transmission assembly (43) is meshed with an intermittent gear in the middle of the driving end (5) for transmission.

2. The sand making and shaping device according to claim 1 is characterized in that: The outer seat assembly (2) comprises an outer seat body (21), wherein a rotating cavity (22) is provided in the middle of the outer seat body (21), and a plurality of first spherical rotating seats (23) are obliquely arranged in a circular array on the cavity wall in the middle of the rotating cavity (22), and a plurality of second spherical rotating seats (24) are obliquely arranged in a circular array on the cavity wall at the lower end of the rotating cavity (22), an inner grinding core assembly opening (25) is provided through the middle of the lower end of the rotating cavity (22), a driving end opening (26) is provided through the right side of the lower end of the rotating cavity (22), and a rotating disk (27) is provided on the circumference of the top surface of the outer seat body (21).

3. A sand making and shaping device for a sand making machine according to claim 2, characterized in that: The outer grinding disc assembly (3) comprises an outer grinding disc body (31), wherein a material guiding outer expansion edge (32) is provided in the middle of the inner cavity of the outer grinding disc body (31), and an inner grinding cone surface (33) is provided at the lower end of the inner cavity of the outer grinding disc body (31), and first grinding teeth are obliquely arranged on the cone surface of the inner grinding cone surface (33) in a circular array, a first arc-shaped rotating groove (34) is provided around the middle of the outer wall of the outer grinding disc body (31), and a second arc-shaped rotating groove (35) is provided around the lower end of the outer wall of the outer grinding disc body (31), a toothed disc (36) is sleeved at the tail of the lower end of the outer side of the outer grinding disc body (31), and a fixed pressing edge (37) for connecting with the top surface of the rotating disc (27) is provided on the outer side of the upper end of the outer grinding disc body (31), and the outer grinding disc body (31) is made of high manganese steel.

4. The sand making and shaping device of a sand making machine according to claim 3 is characterized in that: The material discharge seat (41) comprises a material seat body (411), a first bearing (412) is embedded in the middle of the material seat body (411), and a material guide inner edge (413) and a material guide outer edge (414) are arranged on the inner and outer circumferences of the top surface of the material seat body (411), a plurality of material discharge openings (415) are arranged in a circular array on the material seat body (411) between the material guide inner edge (413) and the material guide outer edge (414), and a material guide triangular protrusion (416) is arranged at the upper end between two adjacent material discharge openings (415).

5. The sand making and shaping device according to claim 4 is characterized in that: The grinding core (42) comprises a grinding core body (421), and an outer grinding cone surface (422) is provided at the lower end of the grinding core body (421), and second grinding teeth are obliquely provided on the cone surface of the outer grinding cone surface (422) in a circular array, a material guide cone block (423) is provided at the upper end of the grinding core body (421), and a first rotating shaft (424) is provided in the middle of the bottom surface of the grinding core body (421), and the grinding core body (421) is made of high manganese steel; An abrasive cavity is formed between the inner grinding cone surface (33) and the outer grinding cone surface (422), and the lateral spacing of the abrasive cavity gradually decreases from top to bottom, and the lateral spacing of the abrasive cavity is 20 mm to 4.8 mm from top to bottom; The lateral distance between the upper end of the outer grinding disc body (31) in the cavity and the material guide cone block (423) forms a material storage cavity connected to the abrasive cavity.

6. The sand making and shaping device according to claim 5, characterized in that: The transmission assembly (43) comprises a transmission support (431), and a second bearing (432) and a second rotating shaft (433) are embedded in the transmission support (431), a first driven gear (434) is sleeved on the middle of the shaft body of the second rotating shaft (433), and a first synchronous gear set (435) is embedded on the upper end of the shaft body of the second rotating shaft (433).

7. The sand making and shaping device according to claim 6, characterized in that: The driving end (5) comprises a driving support (51), and a linkage shaft (52) is vertically sleeved on the driving support (51), and a first half gear (53), a driven bevel gear (54), a second half gear (55) and a second synchronous gear set (56) are sleeved on the shaft body of the linkage shaft (52) from top to bottom, respectively, and a motor (57) is meshed on one side of the driven bevel gear (54), and a driving bevel gear meshed with the driven bevel gear (54) is provided on the motor (57); The first half gear (53) is meshed with the intermittent gear on the right side of the toothed disc (36) for transmission, and the second half gear (55) is meshed with the intermittent gear on the right end of the first driven gear (434) for transmission.

8. The sand making and shaping device according to claim 7, characterized in that: The screening assembly (6) comprises a screening support (61), a third rotating shaft (62) is vertically sleeved on the screening support (61), an arc-shaped screen frame (63) is arranged at the lower end of the third rotating shaft (62), a mesh screen (64) is arranged on the arc-shaped surface of the lower end of the arc-shaped screen frame (63), a circular discharge partition (65) is arranged on the outer ring of the arc-shaped screen frame (63), and the left end of the second synchronous wheel group (56) is sleeved on the upper end of the shaft body of the third rotating shaft (62).

9. A method for using the sand making and shaping device of a sand making machine according to claim 8, characterized in that: Here’s how: First, machine-made sand is poured from the feed hopper (8), and the machine-made sand is expanded outwardly and diverted into the material storage chamber under the action of the guide cone block (423), and is continuously introduced into the abrasive chamber under the action of the guide expansion edge (32) for shaping. During shaping, the motor on the drive end (5) rotates, and the driven bevel gear (54) drives the bevel gear to rotate the linkage shaft (52), thereby synchronously driving the first half gear (53), the second half gear (55) and the second synchronous wheel group (56) to rotate to intermittently drive the outer grinding disc assembly (3) and the inner grinding core assembly (4), and continuously drive the screening assembly (6). When the drive end (5) and the outer grinding disc assembly (3) are meshed, the meshing transmission between the inner grinding core assembly (4) and the drive end (5) is intermittently disengaged, so that the intermittent rotation time of the grinding core member (42) and the outer grinding disc body (31) is exactly staggered, thereby reaching the inner side of the abrasive chamber. When the outer grinding cone surface (422) of the wall is rotating to shape the abrasive, the inner grinding cone surface (33) of the outer wall is stationary. On the contrary, when the inner grinding cone surface (33) is rotating to shape the abrasive, the outer grinding cone surface (422) is stationary, thereby achieving the staggered time of grinding and shaping the machine-made sand respectively on the inner grinding cone surface (33) and the outer grinding cone surface (422). In addition, because the lateral spacing of the abrasive cavity is gradually reduced from 20 mm to 4.8 mm from top to bottom, the diameter of the machine-made sand discharged at the end meets the standard, and the machine After being discharged, the manufactured sand will fall into the middle area of ​​the rotating arc-shaped screen frame (63), and under the centrifugal effect generated by the continuous rotation of the arc-shaped screen frame (63), the crushed powder generated during the grinding and shaping of the manufactured sand will pass through the mesh screen (64) and be discharged downward into the powder discharge hopper (7) for external discharge, while the manufactured sand will be thrown outwards to the circular discharge partition (65) under the action of centrifugal force and discharged downwards to the conveyor belt laterally connected to the lower end of the frame (1) for external transport.

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