Production device and usage method of resin sand for casting

Abstract

The present invention relates to the technical field of resin sand production, and particularly relates to a production device for resin sand used in casting and a method for using the same, including a device positioning component. A processing and transportation component is installed on one side of the device positioning component. A stirring component is installed at the bottom of the processing and transportation component. A material vibration component is installed at the bottom of the stirring component. According to the present invention, when the stirring blades vibrate up and down along the connection of the stirring rollers through the first springs, the stirring blades squeeze the inclined sliding plates to deflect along the annular positioning blocks. The inclined sliding plates drive a plurality of inclined sliding plates to move together through the telescopic properties of the telescopic positioning rings and the thin telescopic rings, causing the inclined sliding plates to push back and forth along the side walls of the stirring blades, thereby pushing the raw materials on the side walls of the stirring blades back to their original positions, reducing the curing of the raw materials, and avoiding interference of the stirring blades on the subsequent batches of raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of resin sand production, and particularly relates to a production device and a usage method of resin sand for casting. Background Art

[0002] Resin sand has good formability and can accurately replicate the shape and details of the mold. This enables it to be used in the manufacture of castings with extremely high requirements for dimensional accuracy and surface quality, such as pump bodies, automotive engine cylinder blocks and cylinder heads, precision mechanical parts, etc.

[0003] When processing resin sand, the selected sand grains need to be put into a sand mixer, and an appropriate amount of resin binder and curing agent are added. The sand mixer makes the resin and the curing agent evenly coat the surface of the sand grains through stirring, rolling and other methods. The mixing time and speed should be determined according to the type of the sand mixer and the formula of the resin sand. Generally, it is necessary to ensure that the resin and the curing agent are fully mixed with the sand grains to avoid the situation of excessive or insufficient resin locally. At the same time, attention should be paid to the environmental temperature and humidity during processing, as they have a great influence on the mixing of resin sand.

[0004] The sand mixer makes the resin binder and the curing agent evenly coat the surface of each sand grain through the rotation of the stirring blades or other mixing methods, ensuring the consistent performance of the resin sand. This is very important for the quality stability of the mold and core during the casting process, because uneven mixing may cause some sand grains to be poorly bonded, affecting the strength and overall performance of the mold.

[0005] However, during the processing of resin sand, the resin component therein may adhere to the interior of the equipment during the mixing process. Especially after the mixing device stops working, if the residual resin sand is not cleaned in time, it will solidify on the surface and internal corners of the equipment. For example, on the upper and lower surfaces of the stirring blades, the resin sand is prone to accumulate and solidify, and it is very difficult to clean this solidified resin sand, requiring special tools and chemical reagents, and the cleaning process takes a long time.

[0006] Therefore, this application proposes a production device and a usage method of resin sand for casting. Summary of the Invention

[0007] The purpose of the present invention is to address the problem that during the processing of resin sand, the resin component therein may adhere to the interior of the equipment during the mixing process. Especially after the mixing device stops working, if the residual resin sand is not cleaned in time, it will solidify on the surface and internal corners of the equipment, and proposes a resin sand for casting and its preparation method.

[0008] In the first aspect, this application provides a production device of resin sand for casting:

[0009] It includes a device positioning component, on one side of which a processing and transportation component is installed, at the bottom of the processing and transportation component a stirring component is installed, and at the bottom of the stirring component a material vibration component is installed;

[0010] The device positioning component includes a heat preservation chamber. The stirring component includes an auxiliary processing chamber fixedly installed on the inner wall of the heat preservation chamber. A stirring roller is slidably installed inside the auxiliary processing chamber. The stirring blades are connected to the stirring roller through the first springs. Two inclined sliding plates are slidably installed between every two of the stirring blades. An annular positioning block is fixedly installed on the outer side of the stirring roller. The inclined sliding plates are hinged to the outer side of the annular positioning block, and an auxiliary spring is fixedly installed at the connection between the inclined sliding plates and the annular positioning block. A telescopic positioning ring is fixedly installed on the outer side of the inclined sliding plate. A thin telescopic ring is slidably installed on the outer side of the telescopic positioning ring. The thin telescopic ring is slidably installed on the side of the stirring blade. An arc spring is fixedly installed between the telescopic positioning ring and the thin telescopic ring;

[0011] A plurality of arc friction blocks are arranged between every two groups of the stirring blades. A fixed block is rotatably installed on the side of the arc friction block away from the stirring blade. The fixed block is fixedly installed on the inner wall of the auxiliary processing chamber.

[0012] Optionally, a second spring is fixedly installed inside the fixed block through a fixing ring. The side of the second spring away from the fixed block is fixedly installed on the outer side of a spring rod. A spring rod is fixedly installed inside the fixed block. The spring rod is attached to one side of the arc friction block.

[0013] Optionally, the device positioning component further includes a hollow positioning frame fixedly installed on the outer side of the heat preservation chamber. A positioning plate is fixedly installed on one side of the hollow positioning frame. A base is fixedly installed at the bottom of the positioning plate.

[0014] Optionally, the processing and transportation component includes a threaded rod rotatably installed on one side of the positioning plate. A second forward and reverse motor is fixedly installed at the bottom of the threaded rod. A guiding plate is fixedly installed on the top of the positioning plate.

[0015] Optionally, two clamping rods are threadedly connected to the outer side of the threaded rod. The two clamping rods are slidably installed inside the guiding plate. A first forward and reverse motor is fixedly installed at the bottom of one of the clamping rods. The stirring roller is fixedly installed on the output shaft of the first forward and reverse motor.

[0016] Optionally, a blocking cover is fixedly installed on one side of the other clamping rod. The blocking cover is slidably installed inside the auxiliary processing chamber.

[0017] Optionally, the material vibration assembly includes a positioning box fixedly installed on one side of the base. An auxiliary long rod is installed inside the positioning box through a third forward and reverse motor. An eccentric wheel is fixedly installed on one side of the auxiliary long rod. A support connecting rod is rotatably installed on the side of the eccentric wheel away from the auxiliary long rod. The number of eccentric wheels is two. The side of the support connecting rod away from the auxiliary long rod is rotatably installed on one side of the positioning box through another eccentric wheel.

[0018] Optionally, a clamping support rod is fixedly installed at the top of the support connecting rod. A tray is fixedly installed at the top of the clamping support rod. The tray is slidably installed inside the auxiliary processing cavity. Two third springs are fixedly installed at the bottom of the tray. The bottom of the third spring is fixedly installed with a hollow positioning tube. The hollow positioning tube is fixedly installed on the top of the positioning box.

[0019] In a second aspect, the application provides a method for using a production device for resin sand for casting, including the following steps:

[0020] S1: First, use the second forward and reverse motor to drive the threaded rod to rotate forward, and then put the raw materials, resin binder and curing agent into the auxiliary processing cavity from the gap between the auxiliary processing cavity and the plugging cover.

[0021] S2: Then, the second forward and reverse motor adjusts the threaded rod to rotate in the reverse direction, and the two clamping rods drive the plugging cover to fit on the top of the auxiliary processing cavity, forming a sealed state between the raw materials, the auxiliary processing cavity and the tray.

[0022] S3: The first forward and reverse motor drives the stirring roller to rotate, and the stirring roller drives a plurality of stirring blades to fully stir the inside of the auxiliary processing cavity.

[0023] S4: When the raw materials are pushed towards the arc friction block due to the centrifugal force generated during the rotation of the stirring roller, if the raw materials are excessively piled up at the positions of the arc friction block and the stirring blades, the raw materials will generate frictional force with the stirring blades and the arc friction block, and the raw materials will be accelerated to separate up and down by the frictional force.

[0024] S5: The third forward and reverse motor drives the auxiliary long rod to rotate, and the auxiliary long rod drives the eccentric wheel to rotate. Since the eccentric wheel is in an eccentric state, when the two eccentric wheels rotate, they drive the support connecting rod to rotate under the clamping of the two eccentric wheels, and the support connecting rod thus swings up and down, pushing the raw materials back to the stirring assembly for processing.

[0025] S6: Prepare the mold according to actual needs, fill the mixed resin sand into the mold, and perform mechanical molding to complete the configuration.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When the stirring blade vibrates up and down along the connection of the stirring roller through the first spring, the stirring blade squeezes the inclined sliding plate, causing the inclined sliding plate to deflect along the annular positioning block. The telescopic positioning ring and the telescopic property of the thin telescopic ring drive multiple inclined sliding plates to move together, causing the inclined sliding plate to push back and forth along the side wall of the stirring blade, thereby pushing the raw materials on the side wall of the stirring blade back to their original positions, reducing the solidification of the raw materials, and avoiding interference with the next batch of raw materials by the stirring blade;

[0028] 2. If the raw materials are excessively piled up at the positions of the arc friction block and the stirring blade, the raw materials generate frictional force with the stirring blade and the arc friction block, accelerating the separation of the raw materials up and down by using the frictional force, thereby reducing the accumulation of raw materials. Moreover, the arc friction block drives the second spring to rotate and compress along the fixed block. The arc friction block returns to its original position under the elastic force of the spring rod and the torsion of the second spring. Then, the arc friction block shakes off the raw materials on its surface to avoid residue. During the process of the arc friction block rotating and vibrating, it strikes the surrounding raw materials, thus better preventing the raw materials from accumulating and being unable to be evenly wrapped with the resin binder and curing agent;

[0029] 3. The support connecting rod drives the engaging support rod and the object tray to move up and down along the auxiliary processing cavity. During the processing in the auxiliary processing cavity, the raw materials are piled up on the object tray, that is, at the bottom position of the processing area. Due to the swing of the object tray and the elastic vibration of the third spring, the solidification of the raw materials after being heated at the bottom of the equipment for a long time is avoided, and the cleaning work is reduced. At the same time, the object tray pushes the raw materials at the bottom to the processing area of the stirring blade, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The structural schematic diagram of the resin sand production device for casting of the present invention is given;

[0031] Figure 2 It is the structural schematic diagram of the threaded rod;

[0032] Figure 3 It is the structural schematic diagram of the object tray;

[0033] Figure 4 It is the structural schematic diagram of the hollow positioning tube;

[0034] Figure 5 It is the structural schematic diagram of the first forward and reverse motor;

[0035] Figure 6 For Figure 5 The enlarged view of area A in;

[0036] Figure 7 It is the structural schematic diagram of the arc friction block;

[0037] Figure 8 It is the structural schematic diagram of the spring rod.

[0038] Reference numerals: 1, device positioning assembly; 101, base; 102, positioning plate; 103, insulation chamber; 104, hollow positioning frame; 2, processing and transportation assembly; 201, threaded rod; 202, guide plate; 203, clamping rod; 204, first forward and reverse motor; 205, plugging cover; 3, stirring assembly; 301, auxiliary processing chamber; 302, stirring blade; 303, stirring roller; 304, first spring; 305, inclined sliding plate; 306, annular positioning block; 307, telescopic positioning ring; 308, thin telescopic ring; 309, arc friction block; 310, second spring; 311, fixed block; 312, spring rod; 4, material vibration assembly; 401, positioning box; 402, object supporting tray; 403, third spring; 404, hollow positioning tube; 405, clamping support rod; 406, support connecting rod; 407, eccentric wheel; 408, auxiliary long rod. Detailed implementation manners

[0039] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] A production device for resin sand used in casting proposed by the present invention, as Figure 1 - Figure 2 shown, includes a device positioning assembly 1, a processing and transportation assembly 2 is installed on one side of the device positioning assembly 1, a stirring assembly 3 is installed at the bottom of the processing and transportation assembly 2, and a material vibration assembly 4 is installed at the bottom of the stirring assembly 3;

[0041] The device positioning component 1 further includes a hollow positioning frame 104 fixedly installed outside the heat preservation chamber 103. A positioning plate 102 is fixedly installed on one side of the hollow positioning frame 104, and a base 101 is fixedly installed at the bottom of the positioning plate 102. The processing and transportation component 2 includes a threaded rod 201 rotatably installed on one side of the positioning plate 102. A second forward and reverse motor is fixedly installed at the bottom of the threaded rod 201. A guide plate 202 is fixedly installed at the top of the positioning plate 102. Two clamping rods 203 are threadedly connected to the outside of the threaded rod 201. The two clamping rods 203 are slidably installed inside the guide plate 202. A first forward and reverse motor 204 is fixedly installed at the bottom of one clamping rod 203. A stirring roller 303 is fixedly installed on the output shaft of the first forward and reverse motor 204. A blocking cover 205 is fixedly installed on one side of the other clamping rod 203. The blocking cover 205 is slidably installed inside the auxiliary processing chamber 301. At the initial stage of preparation, the staff first uses the second forward and reverse motor to drive the threaded rod 201 to rotate forward. Then, the threaded rod 201 uses the thread to cause the two clamping rods 203 to drive the first forward and reverse motor 204 and the blocking cover 205 to move upward along the guide plate 202. Then, the staff puts the raw materials into the auxiliary processing chamber 301 through the gap between the auxiliary processing chamber 301 and the blocking cover 205. Then, the second forward and reverse motor adjusts the threaded rod 201 to rotate in the reverse direction, and the two clamping rods 203 drive the blocking cover 205 to fit on the top of the auxiliary processing chamber 301, forming a sealed state for the raw materials, the auxiliary processing chamber 301, and the object supporting tray 402.

[0042] As Figure 5 - Figure 7 shown, the device positioning component 1 includes a heat preservation chamber 103. The stirring component 3 includes an auxiliary processing chamber 301 fixedly installed on the inner wall of the heat preservation chamber 103. A stirring roller 303 is slidably installed inside the auxiliary processing chamber 301. A plurality of groups of stirring blades 302 are arranged in a circular state on the outer surface of the stirring roller 303. Two inclined sliding plates 305 are slidably installed between every two stirring blades 302. An annular positioning block 306 is fixedly installed on the outer side of the stirring roller 303. The inclined sliding plate 305 is hinged on the outer side of the annular positioning block 306, and an auxiliary spring is fixedly installed at the connection between the inclined sliding plate 305 and the annular positioning block 306. A telescopic positioning ring 307 is fixedly installed on the outer side of the inclined sliding plate 305. A thin telescopic ring 308 is slidably installed on the outer side of the telescopic positioning ring 307. The thin telescopic ring 308 is slidably installed on the side surface of the stirring blade 302. An arc spring is fixedly installed between the telescopic positioning ring 307 and the thin telescopic ring 308;

[0043] Between every two groups of stirring blades 302, a plurality of arc-shaped friction blocks 309 are arranged. A fixed block 311 is rotatably installed on the side of the arc-shaped friction block 309 away from the stirring blade 302. The fixed block 311 is fixedly installed on the inner wall of the auxiliary processing chamber 301. The first forward and reverse motor 204 drives the stirring roller 303 to rotate. The stirring roller 303 drives a plurality of stirring blades 302 to fully stir the inside of the auxiliary processing chamber 301. During this process, if the materials accumulate between two stirring blades 302, due to the centrifugal force generated when the stirring roller 303 rotates, the raw materials are in a position close to the inner wall of the auxiliary processing chamber 301. Therefore, when the stirring blade 302 vibrates up and down along the connection of the stirring roller 303 through the first spring 304, the stirring blade 302 squeezes the inclined sliding plate 305 to deflect along the annular positioning block 306. The inclined sliding plate 305 drives a plurality of inclined sliding plates 305 to move together through the telescopic property of the telescopic positioning ring 307 and the thin telescopic ring 308, causing the inclined sliding plate 305 to push back and forth along the side wall of the stirring blade 302, thereby pushing the raw materials on the side wall of the stirring blade 302 back to their original positions, reducing the solidification of the raw materials, and avoiding interference with the next batch of raw materials by the stirring blade.

[0044] As Figure 5 - Figure 8 shown, a second spring 310 is fixedly installed inside the fixed block 311 through a fixing ring. The side of the second spring 310 away from the fixed block 311 is fixedly installed on the outside of the spring rod 312. A spring rod 312 is fixedly installed inside the fixed block 311. The spring rod 312 is attached to one side of the arc-shaped friction block 309. During the process of the stirring blade 302 and the inclined sliding plate 305 stirring and mixing the raw materials, when the centrifugal force generated by the rotation of the stirring roller 303 causes the raw materials to be pushed towards the arc-shaped friction block 309, if the raw materials accumulate excessively at the positions of the arc-shaped friction block 309 and the stirring blade 302, the raw materials generate frictional forces with the stirring blade 302 and the arc-shaped friction block 309, accelerating the separation of the raw materials up and down by using the frictional forces, thereby reducing the accumulation of raw materials. Moreover, the arc-shaped friction block 309 drives the second spring 310 to rotate and compress along the inside of the fixed block 311. When the raw materials do not contact the arc-shaped friction block 309 or the frictional force becomes small, the arc-shaped friction block 309 rotates back to its original position under the elastic force of the spring rod 312 and the torsion of the second spring 310. Thus, the arc-shaped friction block 309 shakes off the raw materials on its surface to avoid residue, and during the process of the arc-shaped friction block 309 rotating and vibrating, it hits the surrounding raw materials, thereby better preventing the raw materials from accumulating and not being evenly wrapped with the resin binder and the curing agent.

[0045] In this embodiment, as Figure 1 - Figure 4As shown in the figure, the material vibration assembly 4 includes a positioning box 401 fixedly installed on one side of the base 101. Inside the positioning box 401, an auxiliary long rod 408 is installed through a third forward and reverse motor. On one side of the auxiliary long rod 408, an eccentric wheel 407 is fixedly installed. On the side of the eccentric wheel 407 away from the auxiliary long rod 408, a support connecting rod 406 is rotatably installed. The number of eccentric wheels 407 is two. On the side of the support connecting rod 406 away from the auxiliary long rod 408, it is rotatably installed on one side of the positioning box 401 through another eccentric wheel 407. At the top of the support connecting rod 406, a clamping support rod 405 is fixedly installed. At the top of the clamping support rod 405, a material tray 402 is fixedly installed. The material tray 402 is slidably installed inside the auxiliary processing cavity 301. At the bottom of the material tray 402, two third springs 403 are fixedly installed. At the bottom of the third springs 403, a hollow positioning tube 404 is fixedly installed. The hollow positioning tube 404 is fixedly installed on the top of the positioning box 401. The third forward and reverse motor drives the auxiliary long rod 408 to rotate. The auxiliary long rod 408 drives the eccentric wheel 407 to rotate. Since the eccentric wheel 407 is in an eccentric state, when the two eccentric wheels 407 rotate, they drive the support connecting rod 406 to rotate under the clamping of the two eccentric wheels 407. Therefore, the support connecting rod 406 swings up and down. The support connecting rod 406 drives the clamping support rod 405 and the material tray 402 to move up and down along the auxiliary processing cavity 301. During the processing in the auxiliary processing cavity 301, the materials accumulated on the material tray 402, that is, at the bottom position of the processing area, vibrate due to the swing of the material tray 402 and the elastic force of the third springs 403. Thus, it avoids the curing of raw materials after being heated at the bottom of the equipment for a long time, reduces the cleaning work. At the same time, the material tray 402 pushes the raw materials at the bottom to the processing area of the stirring blades 302, thereby improving the processing efficiency.

[0046] A method for using a production device for resin sand used in casting includes the following steps:

[0047] S1: First, the staff uses the second forward and reverse motor to drive the threaded rod 201 to rotate forward. Then the staff puts raw materials, resin binder and curing agent into the auxiliary processing cavity 301 through the gap between the auxiliary processing cavity 301 and the plugging cover 205.

[0048] S2: Then the second forward and reverse motor adjusts the threaded rod 201 to rotate in the reverse direction. The two clamping rods 203 drive the plugging cover 205 to fit on the top of the auxiliary processing cavity 301, forming a sealed state for the raw materials, the auxiliary processing cavity 301 and the material tray 402.

[0049] S3: The first forward and reverse motor 204 drives the stirring roller 303 to rotate. The stirring roller 303 drives the multiple stirring blades 302 to fully stir the inside of the auxiliary processing cavity 301.

[0050] S4: During the process that the raw materials are pushed towards the arc friction block 309 due to the centrifugal force generated when the stirring roller 303 rotates, if the raw materials are excessively piled up at the positions of the arc friction block 309 and the stirring blade 302, frictional forces are generated between the raw materials and the stirring blade 302 and the arc friction block 309, and the raw materials are accelerated to be separated up and down by using the frictional forces.

[0051] S5: The third forward and reverse motor drives the auxiliary long rod 408 to rotate, and the auxiliary long rod 408 drives the eccentric wheel 407 to rotate. Since the eccentric wheel 407 is in an eccentric state, when the two eccentric wheels 407 rotate, they drive the support connecting rod 406 to rotate under the clamping of the two eccentric wheels 407. Therefore, the support connecting rod 406 swings up and down to push the raw materials back to the stirring assembly 3 for processing.

[0052] S6: Prepare a mold according to actual requirements, fill the mixed resin sand into the mold, and perform mechanical molding, thereby completing the configuration.

[0053] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A production device for resin sand for casting, characterized in that: It comprises a device positioning component (1), a processing and transporting component (2) is installed on one side of the device positioning component (1), a stirring component (3) is installed at the bottom of the processing and transporting component (2), and a material vibration component (4) is installed at the bottom of the stirring component (3); The device positioning component (1) comprises a heat preservation chamber (103), the stirring component (3) comprises an auxiliary processing chamber (301) fixedly mounted on the inner wall of the heat preservation chamber (103), a stirring roller (303) being slidably mounted inside the auxiliary processing chamber (301), the stirring blades (302) being connected to the stirring rollers (303) via a first spring (304), two inclined sliding push plates (305) being slidably mounted between every two stirring blades (302), and an annular positioning block (306) being fixedly mounted on the outer side of the stirring rollers (303). ), the inclined sliding push plate (305) is hinged on the outside of the annular positioning block (306), and an auxiliary spring is fixedly installed at the connection between the inclined sliding push plate (305) and the annular positioning block (306), a telescopic positioning ring (307) is fixedly installed on the outside of the inclined sliding push plate (305), a thin telescopic ring (308) is slidably installed on the outside of the telescopic positioning ring (307), the thin telescopic ring (308) is slidably installed on the side of the stirring blade (302), and an arc spring is fixedly installed between the telescopic positioning ring (307) and the thin telescopic ring (308); A plurality of arc-shaped friction blocks (309) are arranged between every two groups of stirring blades (302); a fixed block (311) is rotatably mounted on a side of the arc-shaped friction block (309) away from the stirring blades (302); and the fixed block (311) is fixedly mounted on the inner wall of the auxiliary processing chamber (301).

2. The production device for resin sand for casting according to claim 1, characterized in that: A second spring (310) is fixedly mounted inside the fixed block (311) via a fixing ring; a side of the second spring (310) away from the fixed block (311) is fixedly mounted on the outside of a spring rod (312); a spring rod (312) is fixedly mounted inside the fixed block (311); and the spring rod (312) is fitted onto one side of the arc-shaped friction block (309).

3. The production device of resin sand for casting according to claim 2, characterized in that: The device positioning assembly (1) further comprises a hollow positioning frame (104) fixedly mounted on the outside of the heat preservation chamber (103), a positioning plate (102) fixedly mounted on one side of the hollow positioning frame (104), and a base (101) fixedly mounted on the bottom of the positioning plate (102).

4. The production device for resin sand for casting according to claim 3, characterized in that: The processing and transporting assembly (2) comprises a threaded rod (201) rotatably mounted on one side of a positioning plate (102), a second forward and reverse motor being fixedly mounted on the bottom of the threaded rod (201), and a guide plate (202) being fixedly mounted on the top of the positioning plate (102).

5. The production device for resin sand for casting according to claim 4, characterized in that: The outer side of the threaded rod (201) is threadedly connected to two holding rods (203), the two holding rods (203) are slidably mounted inside the guide plate (202), a first forward and reverse motor (204) is fixedly mounted on the bottom of one of the holding rods (203), and the stirring roller (303) is fixedly mounted on the output shaft of the first forward and reverse motor (204).

6. The production device for resin sand for casting according to claim 5, characterized in that: A blocking cover (205) is fixedly mounted on one side of the other holding rod (203), and the blocking cover (205) is slidably mounted inside the auxiliary processing chamber (301).

7. The production device of resin sand for casting according to claim 6, characterized in that: The material vibration assembly (4) comprises a positioning box (401) fixedly mounted on one side of a base (101); an auxiliary long rod (408) is mounted inside the positioning box (401) via a third forward and reverse motor; an eccentric wheel (407) is fixedly mounted on one side of the auxiliary long rod (408); a support connecting rod (406) is rotatably mounted on the side of the eccentric wheel (407) away from the auxiliary long rod (408); the number of the eccentric wheels (407) is two; and a side of the support connecting rod (406) away from the auxiliary long rod (408) is rotatably mounted on one side of the positioning box (401) via another eccentric wheel (407).

8. The production device of resin sand for casting according to claim 7, characterized in that: A locking support rod (405) is fixedly mounted on the top of the support connecting rod (406), a holding tray (402) is fixedly mounted on the top of the locking support rod (405), the holding tray (402) is slidably mounted inside the auxiliary processing chamber (301), two third springs (403) are fixedly mounted on the bottom of the holding tray (402), a hollow positioning tube (404) is fixedly mounted on the bottom of the third spring (403), and the hollow positioning tube (404) is fixedly mounted on the top of the positioning box (401).

9. A method for using a production device for resin sand for casting, characterized in that: The production device of resin sand for casting as claimed in claim 8 comprises the following steps: S1: first, using the second forward and reverse motor to drive the threaded rod (201) to rotate in the forward direction, and then putting the raw material, the resin binder and the curing agent into the auxiliary processing cavity (301) from the gap between the auxiliary processing cavity (301) and the blocking cover (205); S2: Then, the second forward and reverse motor drives the threaded rod (201) to rotate in the opposite direction, and the two holding rods (203) drive the blocking cover (205) to fit on the top of the auxiliary processing chamber (301), so as to form a sealed state between the raw material, the auxiliary processing chamber (301) and the tray (402); S3: the first forward and reverse motor (204) drives the stirring roller (303) to rotate, and the stirring roller (303) drives the plurality of stirring blades (302) to fully stir the interior of the auxiliary processing chamber (301); S4: Due to the centrifugal force generated by the rotation of the stirring roller (303), the raw materials are pushed toward the arc-shaped friction block (309). If the raw materials are excessively accumulated at the positions of the arc-shaped friction block (309) and the stirring blade (302), friction is generated between the raw materials, the stirring blade (302) and the arc-shaped friction block (309), and the upper and lower parts of the raw materials are separated by friction. S5: the third forward and reverse motor drives the auxiliary long rod (408) to rotate, and the auxiliary long rod (408) drives the eccentric wheel (407) to rotate. Since the eccentric wheel (407) is in an eccentric state, the two eccentric wheels (407) drive the supporting connecting rod (406) to rotate along the clamping of the two eccentric wheels (407), so that the supporting connecting rod (406) swings up and down, pushing the raw material back to the stirring assembly (3) for processing; S6: Prepare the mold according to actual needs, fill the mixed resin sand into the mold, perform mechanical shaping, and then complete the configuration.

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