An automatic sand casting device

Abstract

The present invention belongs to the technical field of sand casting, and specifically refers to an automatic sand casting device, which includes a main frame, a feeding mechanism, a vibrating mechanism, a ramming mechanism and a fixing mechanism. The feeding mechanism is arranged on the side wall of the main frame, the vibrating mechanism is arranged at the bottom end of the main frame, the ramming mechanism is arranged at the top end of the main frame, and the fixing mechanism is arranged at the top end of the vibrating mechanism. The present invention is provided with a vibrating mechanism to vibrate the sand raw material up and down, achieving the technical effect of vibrating the sand raw material evenly, effectively solving the technical problem of uneven distribution of the sand raw material. By providing a reciprocating mechanism, the sand raw material is spread into the mold by the reciprocating movement of the sliding frame, achieving the technical effect of uniform sand dropping. The present invention utilizes the adaptive principle. By providing a leveling mechanism, the leveling plate moves back and forth on the upper surface of the mold, achieving the technical effects of leveling and recovering the sand raw material, effectively solving the technical problems of manual leveling and sand raw material waste in the prior art.

Description

Technical Field

[0001] The present invention belongs to the technical field of sand casting, and specifically refers to an automatic sand casting device. Background Art

[0002] Casting is a metal hot working process that humans mastered relatively early. It mainly includes two categories: sand casting and special casting. However, the manufacture of sand casting molds is very difficult. The production of molds is time-consuming, and the ramming of sand and gravel requires a large amount of manpower and time. This work is mainly repetitive and mechanically cumbersome, and can be completely completed by machinery.

[0003] An automatic sand casting device is a casting equipment used to manufacture sand molds. Its main functions are: filling sand, filling loose molding sand into the sand box; compacting the molding sand, making the loose molding sand in the sand box compact through different methods such as vibration compaction, pressure compaction, vibration-pressure compaction, and injection compaction, so that the sand mold has the necessary strength during processes such as handling and pouring; the most common molds are made of molding sand. The molding sand has good fluidity, is easy to form, and has a low price. Steel, iron, and most non-ferrous alloy castings can be obtained by sand casting methods, so it is relatively widespread in casting applications.

[0004] In the prior art, during sand filling, due to uneven sand distribution, uneven sand compaction often occurs during the compaction process, which in turn affects the quality of the casting. At the same time, some equipment requires manual leveling and cannot recycle excess molding sand.

[0005] Currently, there is a lack of a sand casting device that can evenly distribute and screen molding sand, and at the same time level and recycle excess molding sand. Summary of the Invention

[0006] To solve the above-mentioned existing problems, the present invention provides an automatic sand casting device. The present invention is provided with a vibration mechanism. By vibrating the fixed table, the mold together with the sand raw materials inside can be vibrated up and down, achieving the technical effect of vibrating the sand raw materials evenly, and effectively solving the technical problem of uneven distribution of sand raw materials in the prior art; by providing a reciprocating mechanism, using the reciprocating movement of the sliding frame, the sand raw materials are spread into the mold through the sand spreading pipeline, achieving the technical effect of uniform sand falling, and effectively solving the technical problem of uneven sand falling in the prior art and improving the quality of the casting; the present invention is provided with a sand screening mechanism, using the reciprocating movement of the sand sieve to screen the sand raw materials to be dropped into the mold, reducing the agglomeration of sand raw materials, achieving the technical effect of uniform particle distribution of sand raw materials, and effectively solving the technical problem of uneven distribution and agglomeration of sand raw materials in the prior art; the present invention utilizes the adaptive principle. By providing a leveling mechanism, using the leveling plate to move back and forth on the upper surface of the mold, and using the up and down displacement of the mold hydraulic press, the technical effects of leveling and recycling sand raw materials are achieved at the same time, effectively solving the technical problems of manual leveling and waste of sand raw materials in the prior art.

[0007] The technical solution adopted by the present invention is as follows: This solution provides an automatic sand casting device, including a main frame, a feeding mechanism, a vibrating mechanism, a ramming mechanism, and a fixing mechanism. The feeding mechanism is arranged on the side wall of the main frame, the vibrating mechanism is arranged at the bottom end of the main frame, the ramming mechanism is arranged at the top end of the main frame, the fixing mechanism is arranged at the top end of the vibrating mechanism. The feeding mechanism includes a reciprocating mechanism and a sand screening mechanism. The reciprocating mechanism is arranged on the side wall at the top end of the main frame, and the sand screening mechanism is arranged on the side wall of the reciprocating mechanism. The ramming mechanism includes a mold pressing mechanism and a leveling mechanism. The mold pressing mechanism is arranged at the top end of the main frame, and the leveling mechanism is arranged on the side wall of the mold pressing mechanism.

[0008] Further, the reciprocating mechanism includes a slide rail, a first servo motor, a first threaded rod, a sliding frame, a feeding bin, a feeding pipe, a second servo motor, and a propeller. The slide rail is fixedly arranged on the side wall at the top end of the main frame. The first servo motor is fixedly arranged on the side wall of the main frame. Both ends of the sliding frame are slidably arranged on the side wall of the slide rail. The first threaded rod is coaxially fixedly arranged at the output end of the first servo motor. The side wall of the sliding frame is sleeved on the outer wall of the first threaded rod. The feeding bin is fixedly arranged at the top end of the sliding frame. The feeding pipe is fixedly arranged on the side wall at the bottom end of the feeding bin. The second servo motor is fixed on the side wall of the sliding frame. The output end of the second servo motor penetrates through the side wall of the feeding bin. The propeller is coaxially fixedly arranged at the output end of the second servo motor. The other end of the propeller rotates on the side wall of the feeding pipe.

[0009] Further, the sand screening mechanism includes a sand screening frame, a sand screening groove, a third servo motor, a rotating rod, a transmission rod, a sand sieve, and a sand spreading pipe. The sand screening frame is fixedly arranged on the side wall of the sliding frame. The sand screening groove is opened on the side walls at both ends of the sand screening frame. The sand sieve is slidably arranged on the side wall of the sand screening groove. The third servo motor is fixedly arranged on the side wall of the sand screening frame. One end of the rotating rod is rotatably arranged at the output end of the third servo motor. One end of the transmission rod is rotatably arranged on the side wall at one end of the rotating rod. The other end of the rotating rod is rotatably arranged on the side wall of the sand sieve. The sand spreading pipe is fixedly arranged on the side wall of the sand screening frame.

[0010] Further, the vibrating mechanism includes a support platform, a support groove, a fixed platform, vibrating auxiliary rods, a fourth servo motor, and a vibrating eccentric wheel. The support platform is fixedly arranged on the side wall at the bottom end of the main frame. The support groove is opened at the top end of the support platform. The fixed platform is slidably arranged on the side wall of the support groove. The vibrating auxiliary rods are arranged in an array on the side walls at both ends of the fixed platform. The fourth servo motors are arranged in an array on the side wall of the fixed platform. The vibrating eccentric wheels are coaxially fixedly arranged at the output ends of the fourth servo motors. The vibrating auxiliary rods are located above the vibrating eccentric wheels. The side wall of the vibrating eccentric wheel is in contact with the vibrating auxiliary rods.

[0011] Further, the fixing mechanism includes a fixing groove, a fifth servo motor, a reverse threaded rod, a clamping column, a clamping groove, an L-shaped telescopic rod, an auxiliary rod, a limiting block, a transverse hydraulic actuator, a pressure sensor, and a longitudinal hydraulic actuator. The fixing grooves are arranged in pairs at the top end of the fixing table. The fifth servo motor is fixedly arranged on the side wall of one end of the fixing groove. One end of the reverse threaded rod is coaxially and fixedly arranged at the output end of the fifth servo motor. The other end of the reverse threaded rod rotates on the side wall of the other end of the fixing groove. The clamping column is slidably arranged on the side wall of the fixing groove. The auxiliary rod is slidably arranged on the side wall of the fixing groove. The side wall of the clamping column is sleeved on the outer wall of one end of the reverse threaded rod. The side wall of the auxiliary rod is sleeved on the side wall of the other end of the reverse threaded rod. The clamping groove is opened at the top end of the clamping column. The L-shaped telescopic rod is slidably arranged on the side wall of the clamping groove. The longitudinal hydraulic actuator is fixedly arranged at the top end of the clamping groove. The output end of the longitudinal hydraulic actuator is fixedly connected to the bottom end of the L-shaped telescopic rod. The pressure sensor is fixedly arranged at the bottom end of the L-shaped telescopic rod. The transverse hydraulic actuator is fixedly arranged on the side wall of the clamping column. The limiting block is fixedly arranged at the output end of the transverse hydraulic actuator.

[0012] Further, the die pressing mechanism includes a die pressing hydraulic actuator, a pressing plate, an anti-overflow table, a sixth servo motor, a second threaded rod, and a recycling box. The die pressing hydraulic actuator is fixedly arranged at the bottom end of the main frame. The pressing plate is fixedly arranged at the output end of the die pressing hydraulic actuator. The anti-overflow table is slidably arranged on the side wall of the main frame. The sixth servo motor is fixedly arranged at the bottom end of the main frame. The second threaded rod is coaxially and fixedly arranged at the output end of the sixth servo motor. The top end of the anti-overflow table is sleeved on the outer wall of the second threaded rod. The recycling box is fixedly arranged on the side wall of the main frame.

[0013] Further, the smoothing mechanism includes a smoothing groove, a smoothing rod, a smoothing plate, a pulling rope, a return spring, and a counterweight. The smoothing grooves are opened at the side walls of both ends of the anti-overflow table. Both ends of the smoothing rod are slidably arranged on the side walls of the smoothing grooves. The smoothing plate is rotatably arranged on the side wall of the smoothing rod. The counterweight is fixedly arranged on the side wall of the smoothing plate. One end of the pulling rope is fixedly arranged on the side wall of the pressing plate. The other end of the pulling rope is fixedly arranged on the side wall of one end of the smoothing rod. One end of the return spring is fixedly arranged on the side wall of the smoothing groove. The other end of the return spring is fixedly arranged on the side wall of one end of the smoothing rod. A rope pulley is fixedly arranged on the side wall of one end of the anti-overflow table and the top end of the main frame respectively. The pulling rope passes through the rope pulley near the main frame at one end of the anti-overflow table and the rope pulley at the top end of the main frame.

[0014] Further, an electric control panel is fixedly arranged on the side wall of the main frame. The electric control panel is electrically connected to the first servo motor, the second servo motor, the third servo motor, the fourth servo motor, the fifth servo motor, the sixth servo motor, the die pressing hydraulic actuator, the transverse hydraulic actuator, the pressure sensor, and the longitudinal hydraulic actuator through wires.

[0015] Further, the first threaded rod is threadedly connected to the sliding frame, the reverse threaded rod is threadedly connected to the clamping column, the reverse threaded rod is threadedly connected to the auxiliary rod, and the second threaded rod is threadedly connected to the anti-overflow table.

[0016] Further, the two ends of the reverse threaded rod have opposite thread rotation directions, and the inner cavity at the bottom end of the sand spreading pipe is strip-shaped.

[0017] Further, the model of the electric control panel is SYC89C52RC-401.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) The present invention is provided with a vibration mechanism. By vibrating the fixed table, the mold together with the sand raw materials therein can be vibrated up and down, achieving the technical effect of vibrating the sand raw materials evenly and effectively solving the technical problem of uneven distribution of sand raw materials in the prior art;

[0020] (2) The present invention is provided with a reciprocating mechanism. By using the reciprocating movement of the sliding frame, the sand raw materials are spread into the mold through the sand spreading pipe, achieving the technical effect of uniform sand falling and effectively solving the technical problem of uneven sand falling in the prior art, and improving the quality of castings;

[0021] (3) The present invention is provided with a sand screening mechanism. By using the reciprocating movement of the sand sieve, the sand raw materials to be dropped into the mold are screened, reducing the agglomeration of sand raw materials and achieving the technical effect of uniform distribution of sand raw material particles, effectively solving the technical problem of uneven distribution and agglomeration of sand raw materials in the prior art;

[0022] (4) The present invention is simple to operate, adopts mechanical movement throughout the process, reduces the workload of operators, efficiently and automatically completes the manufacturing of sand molds, and improves work efficiency;

[0023] (5) The present invention is provided with a leveling mechanism. By using the flatting plate to move back and forth on the upper surface of the mold and using the up and down displacement of the die pressing hydraulic device, the technical effects of leveling and recovering sand raw materials are achieved simultaneously, effectively solving the technical problems of manual leveling and waste of sand raw materials in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of an automatic sand mold casting device proposed by the present invention;

[0025] Figure 2 It is the first three-dimensional schematic diagram of an automatic sand mold casting device proposed by the present invention;

[0026] Figure 3 It is the right view of an automatic sand mold casting device proposed by the present invention;

[0027] Figure 4 Top view of an automatic sand mold casting device proposed by the present invention;

[0028] Figure 5 Second three-dimensional schematic diagram of an automatic sand mold casting device proposed by the present invention;

[0029] Figure 6 Partial cross-sectional view of an automatic sand mold casting device proposed by the present invention;

[0030] Figure 7 is Figure 6 Cross-sectional view of section A-A in

[0031] Figure 8 is Figure 7 Enlarged view of part B in

[0032] Figure 9 Partial three-dimensional cross-sectional view of an automatic sand mold casting device proposed by the present invention;

[0033] Figure 10 is Figure 9 Enlarged view of part C in

[0034] Figure 11 Three-dimensional cross-sectional view of the leveling mechanism proposed by the present invention;

[0035] Figure 12 is Figure 11 Enlarged view of part D in

[0036] Among them, 1. Main frame, 2. Feeding mechanism, 3. Vibration mechanism, 4. Tamping mechanism, 5. Fixing mechanism, 210. Reciprocating mechanism, 220. Sand screening mechanism, 410. Pressing die mechanism, 420. Smoothing mechanism, 211. Slide rail, 212. First servo motor, 213. First threaded rod, 214. Sliding frame, 215. Feeding bin, 216. Feeding pipe, 217. Second servo motor, 218. Propeller, 221. Sand screening frame, 222. Sand screening groove, 223. Third servo motor, 224. Rotating rod, 225. Transmission rod, 226. Sand sieve, 227. Sand spreading pipeline, 301. Support platform, 302. Support groove, 303. Fixed platform, 304. Vibration auxiliary rod, 305. Fourth servo motor, 306. Vibration eccentric wheel, 501. Fixed groove, 502. Fifth servo motor, 503. Reverse threaded rod, 504. Clamping column, 505. Clamping groove, 506. L-shaped telescopic rod, 507. Auxiliary rod, 508. Limit block, 509. Horizontal hydraulic device, 510. Pressure sensor, 511. Vertical hydraulic device, 411. Pressing die hydraulic device, 412. Pressing plate, 413. Anti-overflow platform, 414. Sixth servo motor, 415. Second threaded rod, 416. Recycling box, 421. Smoothing groove, 422. Smoothing rod, 423. Smoothing plate, 424. Tensile rope, 425. Return spring, 426. Counterweight, 427. Rope pulley, 101. Electric control panel.

[0037] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0038] In combination with the accompanying drawings, the present invention will be further described in detail.

[0039] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12As shown in the figure, this solution provides an automatic sand mold casting device, including a main frame 1, a feeding mechanism 2, a vibrating mechanism 3, a ramming mechanism 4, and a fixing mechanism 5. The feeding mechanism 2 is arranged on the side wall of the main frame 1, the vibrating mechanism 3 is arranged at the bottom end of the main frame 1, the ramming mechanism 4 is arranged at the top end of the main frame 1, and the fixing mechanism 5 is arranged at the top end of the vibrating mechanism 3. The feeding mechanism 2 includes a reciprocating mechanism 210 and a sand screening mechanism 220. The reciprocating mechanism 210 is arranged on the side wall at the top end of the main frame 1, and the sand screening mechanism 220 is arranged on the side wall of the reciprocating mechanism 210. The ramming mechanism 4 includes a mold pressing mechanism 410 and a leveling mechanism 420. The mold pressing mechanism 410 is arranged at the top end of the main frame 1, and the leveling mechanism 420 is arranged on the side wall of the mold pressing mechanism 410.

[0040] The reciprocating mechanism 210 includes a slide rail 211, a first servo motor 212, a first threaded rod 213, a sliding frame 214, a feeding bin 215, a feeding pipe 216, a second servo motor 217, and a propeller 218. The slide rail 211 is fixedly arranged on the side wall at the top end of the main frame 1. The first servo motor 212 is fixedly arranged on the side wall of the main frame 1. Both ends of the sliding frame 214 are slidably arranged on the side wall of the slide rail 211. The first threaded rod 213 is coaxially and fixedly arranged at the output end of the first servo motor 212. The side wall of the sliding frame 214 is sleeved on the outer wall of the first threaded rod 213. The feeding bin 215 is fixedly arranged at the top end of the sliding frame 214. The feeding pipe 216 is fixedly arranged on the side wall at the bottom end of the feeding bin 215. The second servo motor 217 is fixed on the side wall of the sliding frame 214. The output end of the second servo motor 217 penetrates through the side wall of the feeding bin 215. The propeller 218 is coaxially and fixedly arranged at the output end of the second servo motor 217. The other end of the propeller 218 rotates on the side wall of the feeding pipe 216.

[0041] The sand screening mechanism 220 includes a sand screening frame 221, a sand screening groove 222, a third servo motor 223, a rotating rod 224, a transmission rod 225, a sand sieve 226, and a sand spreading pipeline 227. The sand screening frame 221 is fixedly arranged on the side wall of the sliding frame 214. The sand screening groove 222 is opened on the side walls at both ends of the sand screening frame 221. The sand sieve 226 is slidably arranged on the side wall of the sand screening groove 222. The third servo motor 223 is fixedly arranged on the side wall of the sand screening frame 221. One end of the rotating rod 224 rotates at the output end of the third servo motor 223. One end of the transmission rod 225 rotates on the side wall at one end of the rotating rod 224. The other end of the rotating rod 224 rotates on the side wall of the sand sieve 226. The sand spreading pipeline 227 is fixedly arranged on the side wall of the sand screening frame 221.

[0042] The vibration mechanism 3 includes a support platform 301, a support groove 302, a fixed platform 303, vibration auxiliary rods 304, a fourth servo motor 305, and a vibration eccentric wheel 306. The support platform 301 is fixedly arranged on the bottom side wall of the main frame 1. The support groove 302 is opened at the top end of the support platform 301. The fixed platform 303 is slidably arranged on the side wall of the support groove 302. The vibration auxiliary rods 304 are arranged in an array on the side walls at both ends of the fixed platform 303. The fourth servo motors 305 are arranged in an array on the side wall of the fixed platform 303. The vibration eccentric wheels 306 are coaxially and fixedly arranged at the output ends of the fourth servo motors 305. The vibration auxiliary rods 304 are located above the vibration eccentric wheels 306. The side wall of the vibration eccentric wheel 306 is in contact with the vibration auxiliary rods 304.

[0043] The fixing mechanism 5 includes a fixing groove 501, a fifth servo motor 502, a reverse threaded rod 503, a clamping column 504, a clamping groove 505, an L-shaped telescopic rod 506, an auxiliary rod 507, a limit block 508, a transverse hydraulic actuator 509, a pressure sensor 510, and a longitudinal hydraulic actuator 511. The fixing grooves 501 are opened in pairs at the top end of the fixed platform 303. The fifth servo motor 502 is fixedly arranged on the side wall at one end of the fixing groove 501. One end of the reverse threaded rod 503 is coaxially and fixedly arranged at the output end of the fifth servo motor 502. The other end of the reverse threaded rod 503 rotates on the side wall at the other end of the fixing groove 501. The clamping column 504 is slidably arranged on the side wall of the fixing groove 501. The auxiliary rod 507 is slidably arranged on the side wall of the fixing groove 501. The side wall of the clamping column 504 is sleeved on the outer wall of one end of the reverse threaded rod 503. The side wall of the auxiliary rod 507 is sleeved on the side wall of the other end of the reverse threaded rod 503. The clamping groove 505 is opened at the top end of the clamping column 504. The L-shaped telescopic rod 506 is slidably arranged on the side wall of the clamping groove 505. The longitudinal hydraulic actuator 511 is fixedly arranged at the top end of the clamping groove 505. The output end of the longitudinal hydraulic actuator 511 is fixedly connected to the bottom end of the L-shaped telescopic rod 506. The pressure sensor 510 is fixedly arranged at the bottom end of the L-shaped telescopic rod 506. The transverse hydraulic actuator 509 is fixedly arranged on the side wall of the clamping column 504. The limit block 508 is fixedly arranged at the output end of the transverse hydraulic actuator 509.

[0044] The die pressing mechanism 410 includes a die pressing hydraulic actuator 411, a pressing plate 412, an anti-overflow platform 413, a sixth servo motor 414, a second threaded rod 415, and a recycling box 416. The die pressing hydraulic actuator 411 is fixedly arranged at the bottom end of the main frame 1. The pressing plate 412 is fixedly arranged at the output end of the die pressing hydraulic actuator 411. The anti-overflow platform 413 is slidably arranged on the side wall of the main frame 1. The sixth servo motor 414 is fixedly arranged at the bottom end of the main frame 1. The second threaded rod 415 is coaxially and fixedly arranged at the output end of the sixth servo motor 414. The top end of the anti-overflow platform 413 is sleeved on the outer wall of the second threaded rod 415. The recycling box 416 is fixedly arranged on the side wall of the main frame 1.

[0045] The leveling mechanism 420 includes a leveling groove 421, leveling rods 422, leveling plates 423, tension ropes 424, return springs 425 and counterweight blocks 426. The leveling groove 421 is formed in the side walls at both ends of the overflow prevention platform 413. The two ends of the leveling rods 422 are slidably arranged on the side walls of the leveling groove 421. The leveling plates 423 are rotatably arranged on the side walls of the leveling rods 422. The counterweight blocks 426 are fixedly arranged on the side walls of the leveling plates 423. One end of the tension rope 424 is fixedly arranged on the side wall of the pressing plate 412, and the other end of the tension rope 424 is fixedly arranged on the side wall of one end of the leveling rod 422. One end of the return spring 425 is fixedly arranged on the side wall of the leveling groove 421, and the other end of the return spring 425 is fixedly arranged on the side wall of one end of the leveling rod 422. Rope pulleys 427 are respectively fixedly arranged on one end side wall of the overflow prevention platform 413 and the top end of the main frame 1. The tension rope 424 passes through the rope pulley 427 at one end of the overflow prevention platform 413 close to the main frame 1 and the rope pulley 427 at the top end of the main frame 1.

[0046] An electric control panel 101 is fixedly arranged on the side wall of the main frame 1. The electric control panel 101 is electrically connected to the first servo motor 212, the second servo motor 217, the third servo motor 223, the fourth servo motor 305, the fifth servo motor 502, the sixth servo motor 414, the die pressing hydraulic actuator 411, the transverse hydraulic actuator 509, the pressure sensor 510 and the longitudinal hydraulic actuator 511 through wires.

[0047] The first threaded rod 213 is threadedly connected to the sliding frame 214. The reverse threaded rod 503 is threadedly connected to the clamping column 504. The reverse threaded rod 503 is threadedly connected to the auxiliary rod 507. The second threaded rod 415 is threadedly connected to the overflow prevention platform 413.

[0048] The thread rotation directions at both ends of the reverse threaded rod 503 are opposite. The inner cavity at the bottom end of the sand spreading pipeline 227 is strip-shaped.

[0049] During specific use, first place the mold on the fixed table 303. The user can control the fifth servo motor 502 to rotate through the electric control panel 101. By rotating the reverse threaded rod 503, the clamping column 504 and the auxiliary rod 507 can move towards each other in the fixed groove 501 until the clamping column 504 and the auxiliary rod 507 clamp the mold. Subsequently, the user can control the transverse hydraulic actuator 509 to extend and work through the electric control panel 101, and further can push the limit blocks 508 to move towards each other. The two limit blocks 508 can clamp the mold. Then the user can control the longitudinal hydraulic actuator 511 to retract and work through the electric control panel 101, which can make the L-shaped telescopic rod 506 move downward until the pressure sensor 510 contacts the mold. At this time, the longitudinal hydraulic actuator 511 can stop working, and at this time, the clamping of the mold is completed;

[0050] Subsequently, the user can control the operation of the sixth servo motor 414 through the electrical control panel 101. By rotating the second threaded rod 415, the anti-overflow table 413 can move downward until it contacts the upper surface of the mold. Subsequently, the user can control the operation of the first servo motor 212 through the electrical control panel 101. Through the transmission of the first threaded rod 213, the sliding frame 214 and the sand spreading pipe 227 can slide on the slide rail 211 until the bottom end of the sand spreading pipe 227 moves above the edge of the mold. Subsequently, the user can control the operation of the second servo motor 217, the first servo motor 212, and the third servo motor 223 through the electrical control panel 101. The operation of the second servo motor 217 can drive the propeller 218 to rotate, enabling the sand raw materials pre-placed in the feeding bin 215 to be transported through the feeding pipe 216 to above the sand sieve 226 and fall into the sand sieve 226. The operation of the third servo motor 223 can cause the rotating rod 224 to rotate. Through the transmission of the transmission rod 225, the sand sieve 226 can reciprocate in the sand screening groove 222 to screen the sand raw materials. The screened sand raw materials can fall into the mold through the sand spreading pipe 227. The user controls the first servo motor 212 to reverse regularly, which can drive the sliding frame 214 to reciprocate on the slide rail 211, enabling the bottom end of the sand spreading pipe 227 to reciprocate above the mold, and thus enabling the sand raw materials to be evenly spread in the mold. The outlet at the bottom end of the sand spreading pipe 227 is strip-shaped, so that the sand raw materials are evenly distributed in the mold;

[0051] Meanwhile, the user can control the operation of the fourth servo motor 305 through the electrical control panel 101, which can drive the vibration eccentric wheel 306 to rotate. The surface of the vibration eccentric wheel 306 contacts the vibration secondary rod 304. When the closest point of the vibration eccentric wheel 306 to the axis contacts the vibration secondary rod 304, the fixed table 303 is at the lowest point at this time. When the farthest point of the vibration eccentric wheel 306 from the axis contacts the vibration secondary rod 304, the fixed table 303 is at the highest point at this time. The continuous rotation of the vibration eccentric wheel 306 can cause the fixed table 303 and the mold to vibrate up and down, thereby achieving the effect of vibrating the sand raw material in the mold evenly, and further making the sand raw material in the mold evenly distributed. When it is necessary to compact the sand raw material, the sand spreading pipeline 227 can be controlled to return to the original position, and the sand dropping and vibration can be stopped. Subsequently, the user can control the die pressing hydraulic actuator 411 to extend through the electrical control panel 101, which can drive the pressing plate 412 to move downward until it contacts the sand raw material for compaction. During the downward movement of the pressing plate 412, the tension rope 424 will be tightened. Through the transmission of the rope pulley 427, the tension rope 424 can pull the leveling rod 422 to move towards the main frame 1. The leveling plate 423 equipped with the counterweight 426 can level the uneven sand raw material in the mold. When the pressing plate 412 contacts the sand raw material, the leveling rod 422 is located at one end of the anti-overflow table 413 close to the main frame 1 at this time. After the sand raw material is compacted, the user can control the die pressing hydraulic actuator 411 to retract, which can drive the pressing plate 412 to move upward. Due to the lack of the tension transmitted by the tension rope 424, the leveling plate 423 will move towards the initial position under the tension of the return spring 425. During the movement, since the rotation of the leveling plate 423 clockwise is restricted by the leveling rod 422, the leveling plate 423 will force the excess sand raw material on the upper surface of the mold to the end of the anti-overflow table 413 far from the main frame 1, and then fall into the recycling box 416;

[0052] When the sand casting is completed, the fifth servo motor 502 can be controlled to reverse, the transverse hydraulic actuator 509 can be retracted, and the longitudinal hydraulic actuator 511 can be extended to release the fixation of the mold.

[0053] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0054] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention. The actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An automatic sand casting device, characterized in that: The invention comprises a main frame (1), a feeding mechanism (2), a vibrating mechanism (3), a compacting mechanism (4) and a fixing mechanism (5), wherein the feeding mechanism (2) is arranged on the side wall of the main frame (1), the vibrating mechanism (3) is arranged on the bottom end of the main frame (1), the compacting mechanism (4) is arranged on the top end of the main frame (1), the fixing mechanism (5) is arranged on the top end of the vibrating mechanism (3), the feeding mechanism (2) comprises a reciprocating mechanism (210) and a sand screening mechanism (220), the reciprocating mechanism (210) is arranged on the side wall of the top end of the main frame (1), the sand screening mechanism (220) is arranged on the side wall of the reciprocating mechanism (210), the compacting mechanism (4) comprises a die pressing mechanism (410) and a smoothing mechanism (420), the die pressing mechanism (410) is arranged on the top end of the main frame (1), and the smoothing mechanism (420) is arranged on the side wall of the die pressing mechanism (410); The die pressing mechanism (410) comprises a die pressing hydraulic press (411), a pressing plate (412), an anti-overflow platform (413), a sixth servo motor (414), a second threaded rod (415) and a recovery box (416); the die pressing hydraulic press (411) is fixedly arranged at the bottom end of the main frame (1); the pressing plate (412) is fixedly arranged at the output end of the die pressing hydraulic press (411); the anti-overflow platform (413) is slidably arranged on the side wall of the main frame (1); the sixth servo motor (414) is fixedly arranged at the bottom end of the main frame (1); the second threaded rod (415) is coaxially fixedly arranged at the output end of the sixth servo motor (414); the top end of the anti-overflow platform (413) is sleeved on the outer wall of the second threaded rod (415); and the recovery box (416) is fixedly arranged on the side wall of the main frame (1); The smoothing mechanism (420) comprises a smoothing groove (421), a smoothing rod (422), a smoothing plate (423), a tension rope (424), a return spring (425) and a counterweight (426); the smoothing groove (421) is provided at the side walls at both ends of the overflow prevention platform (413); the two ends of the smoothing rod (422) are slidably arranged on the side walls of the smoothing groove (421); the smoothing plate (423) is rotatably arranged on the side walls of the smoothing rod (422); the counterweight (426) is fixedly arranged on the side walls of the smoothing plate (423); one end of the tension rope (424) is fixedly arranged on the pressure plate (425); The side wall of the plate (412), the other end of the tension rope (424) is fixedly arranged on the side wall of one end of the smoothing rod (422), one end of the return spring (425) is fixedly arranged on the side wall of one end of the smoothing groove (421), the other end of the return spring (425) is fixedly arranged on the side wall of one end of the smoothing rod (422), a rope wheel (427) is fixedly arranged on the side wall of one end of the overflow prevention platform (413) and the top of the main frame (1), respectively, and the tension rope (424) passes through the rope wheel (427) at one end of the overflow prevention platform (413) close to the main frame (1) and the rope wheel (427) at the top of the main frame (1); The mold pressing hydraulic press (411) is controlled to extend, thereby driving the pressing plate (412) to move downward until it contacts the sand raw material for compaction. During the downward movement of the pressing plate (412), the tension rope (424) is tightened, and the tension rope (424) is driven by the rope pulley (427) to pull the smoothing rod (422) toward the main frame (1), and the smoothing plate (423) equipped with a counterweight (426) can smooth the uneven sand raw material in the mold. When the pressing plate (412) contacts the sand raw material, the smoothing rod (422) is located at the anti-overflow platform (413) close to the main frame. At one end of (1), when the sand raw material is compacted, the user can control the mold hydraulic press (411) to retract, thereby driving the pressing plate (412) to move upward. Since there is no tension transmitted by the tension rope (424), the trowel plate (423) will be moved to the initial position by the tension of the return spring (425). During the movement, since the trowel plate (423) is restricted by the trowel rod (422) to rotate clockwise, the trowel plate (423) will force the excess sand raw material on the upper surface of the mold to be pushed to the end of the anti-overflow platform (413) away from the main frame (1), and then fall into the recovery box (416).

2. An automatic sand casting device according to claim 1, characterized in that: The reciprocating mechanism (210) comprises a slide rail (211), a first servo motor (212), a first threaded rod (213), a sliding frame (214), a feed bin (215), a feed pipe (216), a second servo motor (217) and a propeller (218), wherein the slide rail (211) is fixedly arranged on a top side wall of the main frame (1), the first servo motor (212) is fixedly arranged on a side wall of the main frame (1), two ends of the sliding frame (214) are slidably arranged on the side walls of the slide rail (211), and the first threaded rod (213) is coaxially fixedly arranged on an input side wall of the first servo motor (212). The output end of the sliding frame (214) is sleeved on the outer wall of the first threaded rod (213), the feed bin (215) is fixedly arranged on the top of the sliding frame (214), the feed pipe (216) is fixedly arranged on the side wall of the bottom end of the feed bin (215), the second servo motor (217) is fixedly arranged on the side wall of the sliding frame (214), the output end of the second servo motor (217) passes through the side wall of the feed bin (215), the propeller (218) is coaxially fixedly arranged on the output end of the second servo motor (217), and the other end of the propeller (218) rotates on the side wall of the feed pipe (216).

3. An automatic sand casting device according to claim 2, characterized in that: The sand screening mechanism (220) comprises a sand screening frame (221), a sand screening trough (222), a third servo motor (223), a rotating rod (224), a transmission rod (225), a sand screen (226) and a sand laying pipeline (227); the sand screening frame (221) is fixedly arranged on a side wall of the sliding frame (214); the sand screening trough (222) is provided on both end side walls of the sand screening frame (221); and the sand screen (226) is slidably arranged on the sand screening trough ( The third servo motor (223) is fixedly arranged on the side wall of the sand screening frame (221), one end of the rotating rod (224) is rotatably arranged on the output end of the third servo motor (223), one end of the transmission rod (225) is rotatably arranged on the side wall of one end of the rotating rod (224), the other end of the rotating rod (224) is rotatably arranged on the side wall of the sand screen (226), and the sand laying pipeline (227) is fixedly arranged on the side wall of the sand screening frame (221).

4. An automatic sand casting device according to claim 3, characterized in that: The vibration mechanism (3) comprises a support platform (301), a support groove (302), a fixed platform (303), a vibration auxiliary rod (304), a fourth servo motor (305) and a vibration deflector (306); the support platform (301) is fixedly arranged on the side wall of the bottom end of the main frame (1); the support groove (302) is opened at the top of the support platform (301); the fixed platform (303) is slidably arranged on the side wall of the support groove (302); the vibration auxiliary rod (304) is arranged in an array on the side walls at both ends of the fixed platform (303); the fourth servo motor (305) is arranged in an array on the side wall of the fixed platform (303); the vibration deflector (306) is coaxially fixedly arranged on the output end of the fourth servo motor (305); the vibration auxiliary rod (304) is located above the vibration deflector (306); and the side wall of the vibration deflector (306) is in contact with the vibration auxiliary rod (304).

5. The automatic sand casting device according to claim 4, characterized in that: The fixing mechanism (5) comprises a fixing groove (501), a fifth servo motor (502), a reverse threaded rod (503), a clamping column (504), a clamping groove (505), an L-shaped telescopic rod (506), an auxiliary rod (507), a limit block (508), a transverse hydraulic device (509), a pressure sensor (510) and a longitudinal hydraulic device (511); the fixing grooves (501) are arranged in pairs at the top of the fixing platform (303); the fifth servo motor (502) is fixedly arranged on a side wall at one end of the fixing groove (501); one end of the reverse threaded rod (503) is coaxially fixedly arranged on an output end of the fifth servo motor (502); the other end of the reverse threaded rod (503) is rotated on the side wall at the other end of the fixing groove (501); the clamping column (504) is slidably arranged on the side wall of the fixing groove (501); the auxiliary rod (507) is slidably arranged on the side wall of the fixing groove (501), the side wall of the clamping column (504) is sleeved on the outer wall of one end of the reverse threaded rod (503), the side wall of the auxiliary rod (507) is sleeved on the side wall of the other end of the reverse threaded rod (503), the clamping groove (505) is opened at the top of the clamping column (504), the L-shaped telescopic rod (506) is slidably arranged on the side wall of the clamping groove (505), the longitudinal hydraulic pressure (511) is fixedly arranged at the top of the clamping groove (505), the output end of the longitudinal hydraulic pressure (511) is fixedly connected to the bottom end of the L-shaped telescopic rod (506), the pressure sensor (510) is fixedly arranged at the bottom end of the L-shaped telescopic rod (506), the transverse hydraulic pressure (509) is fixedly arranged on the side wall of the clamping column (504), and the limit block (508) is fixedly arranged at the output end of the transverse hydraulic pressure (509).

6. The automatic sand casting device according to claim 5, characterized in that: An electrical control panel (101) is fixedly provided on a side wall of the main frame (1); the electrical control panel (101) is electrically connected to a first servo motor (212), a second servo motor (217), a third servo motor (223), a fourth servo motor (305), a fifth servo motor (502), a sixth servo motor (414), a die press (411), a transverse press (509), a pressure sensor (510), and a longitudinal press (511) via wires.

7. An automatic sand casting device according to claim 6, characterized in that: The first threaded rod (213) is threadedly connected to the sliding frame (214), the reverse threaded rod (503) is threadedly connected to the clamping column (504), the reverse threaded rod (503) is threadedly connected to the auxiliary rod (507), and the second threaded rod (415) is threadedly connected to the anti-overflow platform (413).

8. The automatic sand casting device according to claim 7, characterized in that: The threads at both ends of the reverse threaded rod (503) rotate in opposite directions, and the inner cavity at the bottom end of the sand-laying pipe (227) is in the shape of a long strip.

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