An evaporative pattern casting apparatus

Abstract

The application belongs to the field of metal casting, in particular to a lost foam casting device, which comprises a rack, a vibrating mechanism, a control mechanism, a separation mechanism, the vibrating mechanism comprises a plurality of fixed plates; the fixed plates are fixedly installed on the top of the rack; a sand box is arranged between the fixed plates; a cabinet door is arranged at the bottom of the sand box; spring rods are fixedly connected between the fixed plates and the sand box; the control mechanism is used for assisting the vibration of sand bodies in the sand box; the separation mechanism comprises a box body; the box body is located below the sand box, and a coaming is fixedly connected to the top of the box body; the box body and the fixed plate are in fixed connection; an outer frame is fixedly connected to the inner wall of the box body; a mesh bag is fixedly connected to the inner wall of the outer frame; an air bag is fixedly connected to the bottom of the mesh bag; through the air bag, the expansion and contraction of the air bag can be controlled to discharge the residual waste sand on the surface of the mesh bag, thereby facilitating the cleaning of the waste sand on the mesh bag by the device and the collection of the waste sand discharged from the sand box by the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal casting, in particular to a lost foam casting equipment. BACKGROUND

[0002] Intelligent casting island is an important embodiment of the modern casting industry towards intelligent, automated and digital transformation and upgrading. It integrates advanced manufacturing technology, information technology and automation control technology, aiming to improve the casting production efficiency, product quality and controllability and flexibility of the production process. As a new process of near-net-shape and precise forming, lost foam casting, combined with intelligent casting island, can fully exert the advantages of both and promote the high-quality development of the casting industry.

[0003] Lost foam casting, also known as full mold casting, is a new casting method that uses foam plastic high molecular material to make a full mold mold that is exactly the same as the structure and size of the parts to be produced. After dipping and drying the refractory coating, it is buried in dry quartz sand and molded by three-dimensional vibration. Under negative pressure, the model is gasified, the liquid metal occupies the model position, and the casting is formed after solidification and cooling.

[0004] There are innovative technologies for lost foam casting in the prior art. For example, a Chinese patent with publication number CN118808612B discloses a lost foam casting mold. By setting a compaction plate and a edge lifting structure, the quartz sand inside the first sand box can be shaped and lifted, avoiding its rapid downward sinking after the second sand outlet is opened. At the same time, it also blocks the middle quartz sand, limiting the flow speed of the quartz sand, facilitating the orderly guiding and collecting of the quartz sand by the operator in a safe environment, and ensuring that the casting is not affected.

[0005] In the prior art, when the cast workpiece is poured out of the sand box, there is a technology of separating and removing the sand body and the workpiece by a mesh bag. In use and observation, it is found that most of the sand body attached to the surface of the workpiece is blocky waste sand. After the mesh bag removes the sand from the casting, the blocky waste sand will still remain on the surface of the mesh bag, which needs to be manually removed, causing inconvenience.

[0006] Therefore, a lost foam casting equipment is proposed to solve the above problems. SUMMARY

[0007] In order to make up for the shortcomings of the prior art and solve at least one technical problem in the background art.

[0008] The technical scheme adopted by the present application to solve its technical problems is: the lost foam casting equipment comprises a rack, a vibration mechanism, a control mechanism and a separation mechanism, the vibration mechanism comprises a plurality of fixed plates; the fixed plates are fixedly installed on the top of the rack; a sand box is arranged between the fixed plates; a cabinet door is arranged at the bottom of the sand box; spring rods are fixedly connected between the fixed plates and the sand box; the control mechanism is used for assisting the vibration of sand in the sand box; the separation mechanism comprises a box body; the box body is located below the sand box, and a coaming is fixedly connected to the top of the box body; the box body and the fixed plate are in a fixed connection relationship; an outer frame is fixedly connected to the inner wall of the box body; a net bag is fixedly connected to the inner wall of the outer frame; an air bag is fixedly connected to the bottom of the net bag; a pair of air pipes are in communication with one side of the air bag; the air pipes and the box body are in a penetrating arrangement; a pair of guide plates are fixedly connected to the inner wall of the box body, and the guide plates are located at the bottom of the air bag; an inclined slope is fixedly connected to the bottom of the inner wall of the box body, and the inclined slope is arranged in an inclined manner; a discharge port is in communication with one side of the box body; a crushing mechanism is arranged between the guide plates and the inclined slope, and the crushing mechanism is used for crushing the blocky waste sand; by arranging the air bag, the waste sand remaining on the surface of the net bag can be discharged by controlling the expansion and contraction of the air bag, thereby facilitating the cleaning of the waste sand on the net bag by the device and facilitating the collection of the waste sand discharged from the sand box by the device.

[0009] Preferably, the separation mechanism further comprises an oval plate; the oval plate is located below the box body, and the oval plate and the box body are arranged eccentrically; the oval plate is rotatably connected to the rack, and the control mechanism is used for controlling the rotation of the oval plate; four connecting frames are slidably connected to the outer wall of the oval plate, and the connecting frames are uniformly distributed on the four sides of the box body; the connecting frames and the box body are in a penetrating arrangement and are slidably connected; first spheres are fixedly connected to the end portions of the connecting frames; through the cooperation of the oval plate and the connecting frames, the connecting frames can successively extrude the net bag under the rotation of the oval plate, so as to change the posture of the casting on the net bag and assist the device in stripping the sand of the casting.

[0010] Preferably, the control mechanism comprises a first motor; the first motor is fixedly installed in the interior of the rack; the inner wall of the rack is sequentially rotationally connected with a first gear and a second gear, and the first gear and the first gear are in meshing relationship; the first gear and the output end of the first motor are in fixed connection; the oval plate and the second gear are in fixed connection, and the oval plate and the second gear are eccentrically arranged; the top of the first gear is provided with a gear box, and a first bevel gear and a second bevel gear are sequentially arranged in the gear box; the first bevel gear and the second bevel gear are in meshing relationship; the first bevel gear and the top of the first gear are in fixed connection; the second bevel gear is fixedly connected with a cam in the middle, and a wave-shaped groove is formed in the surface of the cam; a vertical plate is slidably connected in the surface groove of the cam; the vertical plate and an adjacent pair of fixed plates are in sliding connection; the vertical plate and the sand box are in fixed connection; when the sand body in the sand box is compacted, the first motor is started to make the first gear rotate together with the first bevel gear, the first bevel gear meshes with the second bevel gear to make the second bevel gear rotate, the second bevel gear can rotate together with the cam, and the vertical plate can be driven to reciprocally slide in the horizontal direction through the wave-shaped groove in the surface of the cam when the cam rotates, so as to drive the sand box to reciprocally shake, thereby making the sand body in the sand box more densely distributed and reducing the gap between the sand particles.

[0011] Preferably, the first sphere is hollow, and the inner wall is sequentially provided with a third sphere, a partition plate and a second sphere from top to bottom; the second sphere and the third sphere are at least one; the partition plate and the inner wall of the first sphere are in fixed connection; when the first sphere extrudes the net bag, waste sand will be attached to the surface of the first sphere, which can increase the surface roughness of the first sphere, thereby increasing the friction between the first sphere and the net bag, and when the first sphere moves with the connecting frame, the second sphere and the third sphere in the first sphere can move irregularly in the first sphere under the action of inertia, and the second sphere and the third sphere will constantly collide with the partition plate and the inner wall of the first sphere, thereby accelerating the removal of the sand particles attached to the surface of the first sphere, and reducing the pollution of the sand particles to the first sphere.

[0012] Preferably, a plurality of ball holes are formed in the top of the partition plate; the size of the ball hole is smaller than the size of the third sphere; by arranging the ball hole, on the one hand, the third sphere will constantly bounce and slide between the plurality of ball holes when sliding along the surface of the partition plate, thereby increasing the vibration effect of the surface of the first sphere, and on the other hand, the inner diameter of the ball hole is smaller than the size of the third sphere, thereby reducing the situation that the third sphere is stagnant in the ball hole.

[0013] Preferably, the outer wall of the connecting frame is fixedly connected with a first impact plate; the outer wall of the box body is provided with a second impact plate, and the second impact plate is correspondingly arranged with the first impact plate; when the connecting frame reciprocally slides along the box body, the first impact plate continuously approaches the second impact plate, and when the first impact plate and the second impact plate contact, the box body is vibrated, thereby assisting the desanding of the surface of the components in the box body and reducing the sand particles attached to the surface of the components in the box body.

[0014] Preferably, the outer wall of the first impact plate is fixedly connected with a group of first impact blocks; the outer wall of the second impact plate is fixedly connected with a plurality of groups of second impact blocks, and the second impact blocks are arranged in a circumferential array; the second impact blocks are correspondingly arranged with the first impact blocks; when the connecting frame impacts the second impact plate with the first impact plate, the first impact blocks impact a group of second impact blocks at the corresponding positions on the second impact plate, and in actual production, the second impact plate can be adjusted in rotation according to the use frequency, so that the first impact blocks on the first impact plate can impact different second impact blocks on the second impact plate, thereby dispersing the wear during impact to the plurality of second impact blocks to prolong the service life of the second impact plate.

[0015] Preferably, the second impact plate is rotationally connected with the box body, and a plurality of fixing holes are formed in the outer wall of the second impact plate; the fixing holes are correspondingly arranged with the second impact blocks; the fixing holes on the second impact plate are fixedly connected with the box body by bolts; by arranging the fixing holes, when the second impact plate is adjusted, the second impact plate can be rotated to switch the second impact blocks corresponding to the first impact blocks, and then the second impact plate and the box body can be fastened by bolts to realize the adjustment of the second impact plate.

[0016] Preferably, a plurality of convex plates are fixedly connected on the surface of the guide plate in a staggered array; the two sides of the convex plate are obliquely arranged; the top of the convex plate is arc-shaped and the end is sharply arranged; by arranging the convex plate, on the one hand, the oblique arrangement of the two sides of the convex plate can make the sand particles and block-shaped waste sand falling on the guide plate receive additional guiding effect, thereby making the distribution of the waste sand falling through the guide plate more uniform, and on the other hand, the sharp and arc-shaped arrangement of the surface of the convex plate can make the block-shaped waste sand falling on the surface of the convex plate be broken, thereby assisting the crushing effect of the device on the waste sand, and in addition, the arc-shaped arrangement can also reduce the situation of the waste sand adhering to the surface of the convex plate.

[0017] Preferably, the crushing mechanism comprises a pair of extrusion rollers; the extrusion rollers are rotationally connected with the inner wall of the box body; a third gear is fixedly connected to the end of the extrusion roller, and the third gear is rotationally connected with the outer wall of the box body; the pair of third gears are in meshing relationship; the outer wall of the box body is fixedly connected with a second motor, and the output end of the second motor is fixedly connected with one of the extrusion rollers; the bottom of the extrusion roller is provided with a scraper; the both ends of the scraper are provided with fixed seats, and the fixed seats are fixedly connected with the inclined slope; the blocky waste sand can fall between the pair of extrusion rollers, and when the sand is removed from the casting and the sand on the surface of the net bag is removed, the second motor can be started to drive the pair of extrusion rollers to rotate towards each other under the meshing action of the third gear, so that the blocky waste sand between the extrusion rollers is crushed, facilitating the subsequent recovery and treatment of the waste sand, and the scraper on the fixed seat can scrape the sand particles attached to the extrusion roller, and the scraped sand particles can flow to the inclined slope under the action of the inclined surface of the scraper; the scraper and the fixed seat can be fixedly connected or slidably connected and installed through a spring, so that the scraper can tightly adhere to the outer wall of the extrusion roller.

[0018] The present application has the advantages of:

[0019] 1. The lost foam casting device disclosed by the present application can control the expansion and contraction of the air bag to remove the waste sand remaining on the surface of the net bag, thereby facilitating the removal of the waste sand on the net bag by the device and the collection of the waste sand discharged from the sand box by the device.

[0020] 2. The lost foam casting device disclosed by the present application can change the posture of the casting on the net bag by gradually extruding the net bag under the rotation of the elliptical plate, thereby assisting the device in removing the sand from the casting. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 It is a schematic diagram of the main body of the present application;

[0023] Figure 2 It is a structural schematic diagram of the fixed plate in the present application;

[0024] Figure 3 It is a structural schematic diagram of the box body in the present application;

[0025] Figure 4 It is a structural schematic diagram of the air bag in the present application;

[0026] Figure 5 Fig. 1 is a structural schematic diagram of an elliptical plate in the present application;

[0027] Figure 6 Fig. 2 is a structural schematic diagram of a stand plate in the present application;

[0028] Figure 7 Fig. 3 is a structural schematic diagram of a connecting frame in the present application;

[0029] Figure 8 Fig. 4 is a structural schematic diagram of a second impact plate in the present application;

[0030] Figure 9 Fig. 5 is a structural schematic diagram of an extrusion roller in the present application.

[0031] In the figure: 1, frame; 12, fixed plate; 13, sand box; 14, spring rod; 15, box body; 16, outer frame; 17, net bag; 18, air bag; 19, air pipe; 110, guide plate; 111, slope; 112, discharge port; 2, elliptical plate; 22, connecting frame; 23, first sphere; 3, first motor; 32, first gear; 33, second gear; 34, first bevel gear; 35, second bevel gear; 36, cam; 37, stand plate; 4, partition plate; 42, second sphere; 43, third sphere; 5, spherical hole; 6, first impact plate; 62, second impact plate; 7, first impact block; 72, second impact block; 8, fixed hole; 9, convex plate; 1000, extrusion roller; 1001, third gear; 1002, second motor; 1003, fixed seat; 1004, scraper. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] The specific embodiments are given below.

[0034] Please refer to Figures 1 to 9As shown, the lost foam casting device provided by the embodiment of the application comprises a rack 1, a vibrating mechanism, a control mechanism, and a separation mechanism. The vibrating mechanism comprises a plurality of fixed plates 12. The fixed plates 12 are fixedly installed on the top of the rack 1. A sand box 13 is arranged between the fixed plates 12. A cabinet door is arranged at the bottom of the sand box 13. Spring rods 14 are fixedly connected between the fixed plates 12 and the sand box 13. The control mechanism is used to assist in vibrating the sand in the sand box 13. The separation mechanism comprises a box body 15. The box body 15 is located below the sand box 13, and a coaming is fixedly connected to the top of the box body 15. The box body 15 is in a fixed connection relationship with the fixed plates 12. An outer frame 16 is fixedly connected to the inner wall of the box body 15. A mesh 17 is fixedly connected to the inner wall of the outer frame 16. An air bag 18 is fixedly connected to the bottom of the mesh 17. One pair of air pipes 19 is in communication with one side of the air bag 18. The air pipes 19 and the box body 15 are in a penetrating arrangement. One pair of guide plates 110 is fixedly connected to the inner wall of the box body 15, and the guide plates 110 are located at the bottom of the air bag 18. An inclined slope 111 is fixedly connected to the inner wall of the bottom of the box body 15, and the inclined slope 111 is arranged in an inclined manner. A discharge port 112 is in communication with one side of the box body 15. A crushing mechanism is arranged between the guide plates 110 and the inclined slope 111, and the crushing mechanism is used to crush the blocky waste sand.

[0035] During casting, the model cluster can be placed in the sand box 13 with the bottom layer of sand, and then the sand in the sand box 13 can be filled layer by layer by an external device. During the process, the control mechanism drives the sand box 13 to reciprocate and deform the spring rods 14 on both sides, so as to vibrate the sand in the sand box 13. Finally, the metal solution can be poured into the model cluster through the pouring pipe reserved at the top of the model cluster under the action of negative pressure, so that the model is gasified and solidified and cooled into a casting under high temperature. The above is a mature technology in the art, and therefore the unmentioned parts in the present application can be arranged in the same way as the prior art. By opening the cabinet door at the bottom of the sand box 13, the cabinet door can be arranged in a hinged manner or a sliding manner. The sand and the casting can be poured into the box body 15. The mesh 17 in the outer frame 16 can bear the casting. The sand can flow from the gap between the outer frame 16 and the box body 15 and the mesh 17 to the bottom of the box body 15. Then, the casting on the mesh 17 can be rolled and the blocky waste sand attached to the surface of the casting can be removed by the separation mechanism. After the casting is taken off from the surface of the mesh 17, one of the air pipes 19 can be connected to a compressed air supply device, which can be a high-pressure gas cylinder. The valve is opened to inject gas into the air bag 18 through the air pipe 19, so that the air bag 18 will expand. For details, please refer to Figure 4, the mesh bag 17 will be inflated by the air bag 18 and the residual blocky waste sand on the surface thereof will flow out under the action of gravity, and pass through the gap between the outer frame 16 and the box body 15, the guide plate 110, and flow to the top of the slope 111, so as to realize the rapid cleaning of the mesh bag 17. When the waste sand in the box body 15 needs to be taken out, the valve at the discharge port 112 can be opened and connected to the feeding device, which can be a vacuum feeding machine, to take out the waste sand in the box body 15. It is worth mentioning that the valve structure involved in the above principle is a mature technology, so its structure and working principle are not described here. By setting the air bag 18, the residual waste sand on the surface of the mesh bag 17 can be discharged by controlling the expansion and contraction of the air bag 18, thereby facilitating the cleaning of the waste sand on the mesh bag 17 by the device, and also facilitating the collection of the waste sand discharged from the sand box 13.

[0036] Please refer to Figure 5 and Figure 7 , the separation mechanism further comprises an oval plate 2; the oval plate 2 is located below the box body 15, and the oval plate 2 and the box body 15 are eccentrically arranged; the oval plate 2 is rotationally connected with the rack 1, and the control mechanism is used to control the rotation of the oval plate 2; the outer wall of the oval plate 2 is slidingly connected with four connecting frames 22, and the connecting frames 22 are uniformly distributed on the four sides of the box body 15; the connecting frames 22 are penetratingly arranged and slidingly connected with the box body 15; the end of the connecting frame 22 is fixedly connected with a first sphere 23;

[0037] When the sand needs to be removed from the casting on the outer frame 16, the control mechanism can be used to control the rotation of the oval plate 2. Since the oval plate 2 and the box body 15 are eccentrically arranged, the leftmost connecting frame 22 will be the deepest into the box body 15 and press the mesh bag 17 through the first sphere 23. Through unilateral extrusion, the casting on the mesh bag 17 can be rolled and sand can be removed. With the rotation of the oval plate 2, the left connecting frame 22 will slide out of the box body 15 and make the upper or lower connecting frame 22 repeatedly penetrate into the box body 15 and extrude the mesh bag 17 in one direction. With the continuous rotation of the oval plate 2, the mesh bag 17 can be extruded in four directions in turn to remove the sand from the casting. Figure 5

[0038] Please refer to Figure 2 , Figure 3 , Figure 6 ​As shown, the control mechanism comprises a first motor 3; the first motor 3 is fixedly installed inside the rack 1; the inner wall of the rack 1 is sequentially rotationally connected with a first gear 32 and a second gear 33, and the first gear 32 is in meshing relationship with the first gear 32; the first gear 32 is in fixed connection with the output end of the first motor 3; the elliptical plate 2 is in fixed connection with the second gear 33, and the elliptical plate 2 and the second gear 33 are eccentrically arranged; a gear box is arranged on the top of the first gear 32, and a first bevel gear 34 and a second bevel gear 35 are sequentially arranged in the gear box; the first bevel gear 34 and the second bevel gear 35 are in meshing relationship; the first bevel gear 34 is in fixed connection with the top of the first gear 32; the second bevel gear 35 is fixedly connected with a cam 36 in the middle, and a wave-shaped groove is formed in the surface of the cam 36; a vertical plate 37 is slidably connected in the surface groove of the cam 36; the vertical plate 37 is slidably connected with an adjacent pair of fixed plates 12; the vertical plate 37 is in fixed connection with the sand box 13;

[0039] When the sand body in the sand box 13 is compacted, the first motor 3 can be started to make the first gear 32 rotate together with the first bevel gear 34, the first bevel gear 34 meshes with the second bevel gear 35 to make the second bevel gear 35 rotate, the second bevel gear 35 can rotate together with the cam 36, and the cam 36 can drive the vertical plate 37 to reciprocate horizontally when it rotates, so as to drive the sand box 13 to reciprocate, thereby making the sand body in the sand box 13 more compact and reducing the gap between the sand particles.

[0040] As shown in Figure 7 and Figure 8 , the first sphere 23 is hollow, and the inner wall is sequentially provided with a third sphere 43, a partition plate 4 and a second sphere 42 from top to bottom; the second sphere 42 and the third sphere 43 are at least one; the partition plate 4 is in fixed connection with the inner wall of the first sphere 23;

[0041] When the first sphere 23 extrudes the net bag 17, waste sand will adhere to the surface of the first sphere 23, which can increase the roughness of the surface of the first sphere 23, thereby increasing the friction between the first sphere 23 and the net bag 17. When the first sphere 23 moves with the connecting frame 22, the second sphere 42 and the third sphere 43 in the first sphere 23 move irregularly in the first sphere 23 under the action of inertia, and the second sphere 42 and the third sphere 43 collide with the partition plate 4 and the inner wall of the first sphere 23, thereby accelerating the removal of the sand particles adhered to the surface of the first sphere 23, and reducing the pollution of the sand particles to the first sphere 23.

[0042] As shown in Figure 8 , a plurality of ball holes 5 are formed in the top of the partition plate 4; the size of the ball hole 5 is smaller than the size of the third sphere 43;

[0043] By setting the ball hole 5, on the one hand, the ball hole 5 can make the third ball 43 constantly bounce and slide between the ball holes 5 when sliding along the surface of the partition plate 4, thereby increasing the vibration effect of the surface of the first ball 23, on the other hand, the inner diameter size of the ball hole 5 is smaller than the size of the third ball 43, thereby reducing the situation that the third ball 43 is stagnant in the ball hole 5.

[0044] Please refer to Figure 7 and Figure 8 As shown, the outer wall of the connecting frame 22 is fixedly connected with the first impact plate 6; the outer wall of the box body 15 is provided with the second impact plate 62, and the second impact plate 62 is correspondingly arranged with the first impact plate 6;

[0045] When the connecting frame 22 reciprocally slides along the box body 15, the first impact plate 6 can continuously approach the second impact plate 62, and when the first impact plate 6 and the second impact plate 62 contact, the box body 15 will be vibrated, thereby assisting the desanding of the surface of the components in the box body 15 and reducing the sand particles attached to the surface of the internal components of the box body 15.

[0046] Please refer to Figure 7 and Figure 8 As shown, the outer wall of the first impact plate 6 is fixedly connected with a group of first impact blocks 7; the outer wall of the second impact plate 62 is fixedly connected with a plurality of groups of second impact blocks 72, and the second impact blocks 72 are arranged in a circumferential array; the second impact blocks 72 are correspondingly arranged with the first impact blocks 7;

[0047] When the connecting frame 22 impacts the second impact plate 62 with the first impact plate 6, the first impact blocks 7 can impact a group of second impact blocks 72 at the corresponding position on the second impact plate 62, and in actual production, the second impact plate 62 can be adjusted by rotation according to the use frequency, so that the first impact blocks 7 on the first impact plate 6 can impact different second impact blocks 72 on the second impact plate 62, thereby dispersing the wear during impact to a plurality of second impact blocks 72 to prolong the service life of the second impact plate 62.

[0048] Please refer to Figure 8 As shown, the second impact plate 62 is rotationally connected with the box body 15, and a plurality of fixing holes 8 are formed in the outer wall of the second impact plate 62; the fixing holes 8 are correspondingly arranged with the second impact blocks 72; the fixing holes 8 on the second impact plate 62 are fixedly connected with the box body 15 through bolts;

[0049] By setting the fixing hole 8, when adjusting the second impact plate 62, the second impact plate 62 can be rotated to switch the second impact blocks 72 corresponding to the first impact blocks 7, and then the second impact plate 62 and the box body 15 can be fastened through bolts to realize the adjustment of the second impact plate 62.

[0050] Please refer to Figures 3 to 5As shown, the guiding plate 110 is provided with a plurality of convex plates 9 arranged in staggered array on the surface thereof; the two sides of the convex plate 9 are arranged in inclined manner; the top of the convex plate 9 is arranged in arc transition, and the end thereof is arranged in sharp manner;

[0051] By arranging the convex plate 9, on one hand, the inclined arrangement of the two sides of the convex plate 9 can make the sand grains and block-shaped waste sand falling on the guiding plate 110 receive additional guiding effect, so as to make the waste sand falling through the guiding plate 110 more evenly distributed; on the other hand, the sharp arc arrangement of the surface of the convex plate 9 can make the block-shaped waste sand falling on the surface of the convex plate 9 be broken, so as to assist the crushing effect of the device on the waste sand, and the arc arrangement can also reduce the situation that the waste sand is attached to the surface of the convex plate 9.

[0052] Please refer to Figure 3 and Figure 9 As shown, the crushing mechanism comprises a pair of extrusion rollers 1000; the extrusion rollers 1000 are rotationally connected with the inner wall of the box body 15; the end of the extrusion roller 1000 is fixedly connected with a third gear 1001, and the third gear 1001 is rotationally connected with the outer wall of the box body 15; the pair of third gears 1001 are in meshing relationship; the outer wall of the box body 15 is fixedly connected with a second motor 1002, and the output end of the second motor 1002 is fixedly connected with one of the extrusion rollers 1000; the bottom of the extrusion roller 1000 is provided with a scraper 1004; the two ends of the scraper 1004 are provided with a fixed seat 1003, and the fixed seat 1003 is fixedly connected with the slope 111;

[0053] The block-shaped waste sand can fall between the pair of extrusion rollers 1000 through the gap between the guiding plates 110; when the sand is removed from the casting and the sand is discharged from the surface of the net bag 17, the second motor 1002 can be started to drive the pair of extrusion rollers 1000 to rotate towards each other under the meshing action of the third gear 1001, so that the block-shaped waste sand between the extrusion rollers 1000 is crushed by extrusion, facilitating the subsequent recycling and processing of the waste sand; meanwhile, the scraper 1004 on the fixed seat 1003 can scrape off the sand grains attached to the extrusion roller 1000, and the scraped sand grains can flow to the slope 111 under the action of the inclined surface of the scraper 1004; the scraper 1004 and the fixed seat 1003 can be fixedly connected or slidably connected and installed by a spring, so that the scraper 1004 can tightly adhere to the outer wall of the extrusion roller 1000.

[0054] Working principle: when casting, the model cluster can be placed in the sand box 13 with the bottom layer of sand body buried, then the sand box 13 can be filled with sand layer by layer through external equipment, and the control mechanism drives the sand box 13 to reciprocate and deform the spring rod 14 on both sides to vibrate the sand body in the sand box 13, finally the metal solution can be poured through the reserved pouring pipe at the top of the model cluster under the action of negative pressure, so that the model is gasified and solidified into a casting under high temperature, the above is the mature technology in the art, so the unmentioned part in this application can be set as the existing technology, by opening the bottom cabinet door of the sand box 13, the cabinet door can be set in a hinged way or a sliding way, the sand body can be poured into the box body 15 together with the casting, the net bag 17 in the outer frame 16 can bear the casting, the sand body can flow from the gap between the outer frame 16 and the box body 15 and the net bag 17 to the bottom of the box body 15, then the casting on the net bag 17 can be rolled and the blocky waste sand attached to the surface of the casting can be removed through the separation mechanism, after the casting is taken off from the surface of the net bag 17, one of the air pipes 19 can be connected to the compressed air supply equipment, which can be a high-pressure gas cylinder, the valve is opened to inject gas into the air bag 18 through the air pipe 19, so that the air bag 18 will expand, for reference Figure 4 , the net bag 17 will be inflated by the air bag 18, and the blocky waste sand remaining on the surface of the net bag 17 will flow out under the action of gravity, and flow to the top of the inclined slope 111 through the gap between the outer frame 16 and the box body 15 and the guide plate 110, so as to realize the rapid cleaning of the net bag 17, when the waste sand in the box 15 needs to be taken out, the valve at the discharge port 112 can be opened and connected to the feeding device, which can be a vacuum feeding machine, to take out the waste sand in the box 15, it is worth mentioning that the valve structure involved in the above principle is a mature technology, so its structure and working principle are not described here; when the casting on the outer frame 16 needs to be desanded, the control mechanism can control the rotation of the oval plate 2, since the oval plate 2 and the box body 15 are eccentrically arranged, the Figure 5For example, the leftmost connecting frame 22 will be the most deeply into the box body 15 and through the first ball 23 on the net 17 extrusion, through unilateral extrusion can help the casting on the net 17 to roll and shakeout, with the rotation of the oval plate 2, the left connecting frame 22 will slip out of the box body 15 and make the upper or lower connecting frame 22 repeatedly deeply into the box body 15 and one-way extrusion on the net 17, the oval plate 2 continues to rotate can repeatedly four direction on the net 17 of the successive extrusion, in order to shakeout the casting; the sand in the sand box 13 is compacted, the first motor 3 can be started and the first gear 32 is rotated together with the first bevel gear 34, the first bevel gear 34 is engaged with the second bevel gear 35 and the second bevel gear 35 is rotated, the second bevel gear 35 can rotate together with the cam 36, when the cam 36 rotates, the surface of the cam 36 can drive the vertical plate 37 to slide horizontally, so as to drive the sand box 13 to shake back and forth, so as to make the sand in the sand box 13 more dense, and reduce the gap between the sand particles; the first ball 23 extrudes the net 17, the surface of the first ball 23 is attached with waste sand, which increases the surface roughness of the first ball 23, thereby increasing the friction between the first ball 23 and the net 17, and when the first ball 23 moves with the connecting frame 22, the second ball 42 and the third ball 43 in the first ball 23 move irregularly in the first ball 23 under the action of inertia, and the second ball 42 and the third ball 43 collide with the partition plate 4 and the inner wall of the first ball 23, thereby accelerating the removal of the sand particles attached to the surface of the first ball 23, thereby reducing the pollution of the sand particles to the first ball 23; by setting the ball hole 5, on the one hand, the ball hole 5 can make the third ball 43 slide along the surface of the partition plate 4 and constantly bounce and slide between the ball holes 5, thereby increasing the vibration effect of the surface of the first ball 23, on the other hand, the inner diameter of the ball hole 5 is smaller than the size of the third ball 43, thereby reducing the situation that the third ball 43 is stuck in the ball hole 5; when the connecting frame 22 slides back and forth along the box body 15, the first impact plate 6 can approach the second impact plate 62, when the first impact plate 6 and the second impact plate 62 contact, the box body 15 will be vibrated, thereby assisting the shakeout of the surface of the parts in the box body 15 and reducing the sand particles attached to the surface of the parts in the box body 15; when the connecting frame 22 hits the second impact plate 62 with the first impact plate 6, the first impact block 7 on the first impact plate 6 can hit a group of second impact blocks 72 on the corresponding position of the second impact plate 62, in actual production, the second impact plate 62 can be adjusted by rotating according to the use frequency, so that the first impact block 7 on the first impact plate 6 can hit different second impact blocks 72 on the second impact plate 62, thereby dispersing the wear during impact to multiple second impact blocks 72 to prolong the service life of the second impact plate 62.By setting the fixed hole 8, when adjusting the second baffle plate 62, the second baffle plate 62 can be switched with the first baffle block 7 by rotating the second baffle plate 62, and then the second baffle plate 62 and the box body 15 can be fastened by bolts to realize the adjustment of the second baffle plate 62; by setting the lug plate 9, on the one hand, the inclined setting on both sides of the lug plate 9 can make the sand particles and block-shaped waste sand falling on the guide plate 110 receive additional guiding effect, thereby making the waste sand falling through the guide plate 110 more evenly distributed, and at the same time, the sharp arc setting on the surface of the lug plate 9 can make the block-shaped waste sand falling on the surface of the lug plate 9 be broken, to assist the crushing effect of the device on the waste sand, and in addition, the arc setting can also reduce the situation that the waste sand adheres to the surface of the lug plate 9; the block-shaped waste sand can fall between a pair of extrusion rollers 1000 through the gap between the guide plates 110, and when the sand is removed from the casting and the sand is discharged from the surface of the net bag 17, the second motor 1002 can be started to drive a pair of extrusion rollers 1000 to rotate towards each other under the meshing action of the third gear 1001, so that the block-shaped waste sand between the extrusion rollers 1000 is extruded and crushed, facilitating the subsequent recycling and processing of the waste sand, and at the same time, the scraper 1004 on the fixed seat 1003 can scrape off the sand particles adhering to the extrusion roller 1000, and the scraped sand particles can flow to the slope 111 under the action of the inclined surface of the scraper 1004, and the scraper 1004 and the fixed seat 1003 can be fixedly connected, or can be slidingly connected and installed by a spring, so that the scraper 1004 can tightly adhere to the outer wall of the extrusion roller 1000.

[0055] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A lost foam casting device, comprising a frame (1), a vibration mechanism, a control mechanism, and a separation mechanism, characterized in that: The vibration mechanism includes a plurality of fixed plates (12); the fixed plates (12) are fixedly mounted on the top of the frame (1); a sand box (13) is provided between the fixed plates (12); a cabinet door is provided at the bottom of the sand box (13); a spring rod (14) is fixedly connected between the fixed plates (12) and the sand box (13); The control mechanism is used to assist in vibrating and compacting the sand in the sand box (13); The separation mechanism comprises a box body (15); the box body (15) is located below the sand box (13), and a panel is fixedly connected to the top of the box body (15); the box body (15) is fixedly connected to the fixed plate (12); the inner wall of the box body (15) is fixedly connected to an outer frame (16); the inner wall of the outer frame (16) is fixedly connected to a net bag (17); the bottom of the net bag (17) is fixedly connected to an air bag (18); one side of the air bag (18) is connected to a pair of air pipes (19); the air pipe (1 9) and the box body (15) are arranged through; a pair of guide plates (110) are fixedly connected to the inner wall of the box body (15), and the guide plates (110) are located at the bottom of the airbag (18); a slope (111) is fixedly connected to the bottom of the inner wall of the box body (15), and the slope (111) is arranged obliquely; a discharge port (112) is connected to one side of the box body (15); a crushing mechanism is provided between the guide plates (110) and the slope (111), and the crushing mechanism is used to crush the blocky waste sand; The separation mechanism further comprises an elliptical plate (2); the elliptical plate (2) is located below the box body (15), and the elliptical plate (2) and the box body (15) are eccentrically arranged; the elliptical plate (2) and the frame (1) are rotatably connected, and the control mechanism is used to control the elliptical plate (2) to rotate; the outer wall of the elliptical plate (2) is slidably connected to four connecting frames (22), and the connecting frames (22) are evenly distributed on the four sides of the box body (15); the connecting frames (22) and the box body (15) are penetratingly arranged and slidably connected; the end of the connecting frame (22) is fixedly connected to a first sphere (23); The control mechanism comprises a first motor (3); the first motor (3) is fixedly mounted inside a frame (1); the inner wall of the frame (1) is rotatably connected to a first gear (32) and a second gear (33), and the first gear (32) and the first gear (32) are in a meshing relationship; the first gear (32) and the output end of the first motor (3) are in a fixed relationship; the elliptical plate (2) and the second gear (33) are in a fixed relationship, and the elliptical plate (2) and the second gear (33) are eccentrically arranged; a gear box is provided on the top of the first gear (32), and the gear box A first bevel gear (34) and a second bevel gear (35) are sequentially arranged inside; the first bevel gear (34) and the second bevel gear (35) are in meshing relationship; the first bevel gear (34) and the top of the first gear (32) are in fixed relationship; a cam (36) is fixedly connected to the middle of the second bevel gear (35), and a wave-shaped groove is provided on the surface of the cam (36); a vertical plate (37) is slidably connected in the groove on the surface of the cam (36); the vertical plate (37) is slidably connected to a pair of adjacent fixed plates (12); and the vertical plate (37) is in fixed relationship with the sand box (13).

2. The lost foam casting equipment according to claim 1, characterized in that: The first sphere (23) is hollow, and the inner wall is provided with a third sphere (43), a partition (4), and a second sphere (42) in order from top to bottom; the second sphere (42) and the third sphere (43) are at least one arrangement; the partition (4) and the inner wall of the first sphere (23) are in a fixed connection.

3. The lost foam casting equipment according to claim 2, characterized in that: A plurality of ball holes (5) are provided on the top of the partition (4); the size of the ball holes (5) is smaller than the size of the third sphere (43).

4. The lost foam casting equipment according to claim 3, characterized in that: The outer wall of the connecting frame (22) is fixedly connected to a first striker plate (6); the outer wall of the box body (15) is provided with a second striker plate (62), and the second striker plate (62) and the first striker plate (6) are arranged correspondingly.

5. The lost foam casting equipment according to claim 4, characterized in that: A group of first impact blocks (7) are fixedly connected to the outer wall of the first impact plate (6); a plurality of groups of second impact blocks (72) are fixedly connected to the outer wall of the second impact plate (62), and the second impact blocks (72) are arranged in a circular array; the second impact blocks (72) and the first impact blocks (7) are arranged correspondingly.

6. The lost foam casting equipment according to claim 5, characterized in that: The second impact plate (62) is rotatably connected to the box body (15), and a plurality of fixing holes (8) are provided on the outer wall of the second impact plate (62); the fixing holes (8) and the second impact block (72) are arranged correspondingly; the fixing holes (8) on the second impact plate (62) and the box body (15) are fixedly connected by bolts.

7. The lost foam casting equipment according to claim 6, characterized in that: The guide plate (110) has a plurality of convex plates (9) fixedly connected in a staggered array on its surface; both sides of the convex plates (9) are arranged obliquely; the top of the convex plates (9) is an arc-shaped transition, and the end is arranged sharp.

8. The lost foam casting equipment according to claim 7, characterized in that: The crushing mechanism comprises a pair of squeezing rollers (1000); the squeezing rollers (1000) are rotatably connected to the inner wall of the box body (15); the ends of the squeezing rollers (1000) are fixedly connected to a third gear (1001), and the third gear (1001) is rotatably connected to the outer wall of the box body (15); the pair of third gears (1001) are in a meshing relationship; the outer wall of the box body (15) is fixedly connected to a second motor (1002), and the output end of the second motor (1002) is in a fixed relationship with one of the squeezing rollers (1000); a scraper (1004) is provided at the bottom of the squeezing roller (1000); fixed seats (1003) are provided at both ends of the scraper (1004), and the fixed seat (1003) is in a fixed relationship with the slope (111).

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