An expendable pattern casting device

Abstract

The application discloses a kind of lost foam casting devices, it is related to lost foam casting technical field, including casting sand box, moving support, vibrating seat and model support, extrusion plate is arranged in casting sand box, extrusion plate is moved along sliding rail by pushing hydraulic cylinder, by model support, multiple foam models can be synchronously clamped, can make foam model keep vertical state when being placed in casting sand box, when filling sand, model inclination will not be caused, compared with artificial model is placed separately, operation efficiency is higher, while also reduce the situation that metal liquid flow path deviates when casting, improve yield, when vibrating compaction to sand by vibrating seat, extrusion plate is extruded to sand, further reduce the gap between sand, improve filling compactness, avoid supporting force uneven model to occur deformation or displacement in pouring process, vibrating seat is internally provided with through hole for sand, can reach the purpose of quick sand discharge by vibration.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of lost foam casting, and particularly relates to a lost foam casting device. BACKGROUND

[0002] Lost foam casting is a high-precision casting method, which is widely applied to the production of castings with complex shapes and high precision requirements, especially in the fields of aviation, automobiles and machinery. The core idea is to use a foam model to replace a traditional metal or sand mold, and the foam model is completely disappeared at high temperature through metal pouring, so that the required castings are obtained. The lost foam casting can cast complex shapes and details that cannot be produced by traditional casting methods, and the castings are smooth and accurate in size, and the subsequent machining work can be reduced.

[0003] The lost foam casting needs to place the foam model in the sand box and fill it with sand. A part of the sand needs to be filled in the sand box first, then the foam model is placed on the sand, and the sand is filled again. Because the surface of the sand is not flat enough, the foam model will be inclined, and the filling of the sand again will exacerbate this phenomenon, resulting in the deviation of the metal liquid flow path, the destruction of the stability of the filling, and the difference in the tightness of different areas of the sand filled by vibration. At present, the means for discharging the sand from the sand box is mostly to overturn the sand box, so that the sand is automatically discharged from the box opening. The sand box is heavy and not easy to overturn, and the sand in the sand box is still in the state of vibration at this time, so the sand is not easy to discharge. Therefore, the lost foam casting device is proposed to solve the above problems. SUMMARY

[0004] To solve the above technical problems, the lost foam casting device is provided, which solves the problems of the inclination of the foam model, the deviation of the metal liquid flow path, the destruction of the stability of the filling, and the difference in the tightness of different areas of the sand filled by vibration.

[0005] To achieve the above purposes, the technical scheme adopted by the application is as follows:

[0006] The lost foam casting device comprises a casting sand box, a moving support, a vibration seat and a model support. The casting sand box is arranged above the moving support. Rollers are rotatably connected to the two ends of the moving support. The moving support is used to drive the casting sand box to move. The vibration seat is arranged below the casting sand box. The vibration seat is used to drive the casting sand box to vibrate. The model support is suspended in the interior of the casting sand box. The model support is used to clamp and fix the foam model.

[0007] The casting sand box comprises a side plate and an extrusion plate. A plurality of sliding rails are fixedly connected to the inner wall of the side plate. The two ends of the extrusion plate are slidably connected with the sliding rails and the inner wall of the side plate.

[0008] The vibration seat comprises a first support plate, a damping assembly, a second support plate, a lifting hydraulic cylinder and a third support plate, a plurality of support blocks are fixedly connected to the upper end of the first support plate, four mounting racks are fixedly connected to the lower end of the first support plate, the four mounting racks are symmetrically arranged, a vibration motor is mounted on one side of each mounting rack, the vibration motor is used to drive the first support plate to vibrate, the second support plate is arranged at the lower end of the first support plate, a plurality of damping assemblies are mounted between the first support plate and the second support plate, the damping assemblies are used to absorb the vibration generated by the first support plate, a plurality of lifting hydraulic cylinders are mounted on the upper end of the third support plate, and the output ends of the lifting hydraulic cylinders are connected with the second support plate through damping pads.

[0009] Preferably, the casting sand box further comprises a bottom plate, the upper end of the bottom plate is fixedly connected with the steel mesh plate, the top of the steel mesh plate is slidably connected with the bottom of the extrusion plate, sealing pads are mounted at the connection positions of the extrusion plate with the side plates and the steel mesh plate, the outer side of the extrusion plate is fixedly connected with a connecting plate, a connecting frame is arranged on one side of the connecting plate, a plurality of damping springs are mounted between the connecting plate and the connecting frame, a fixing frame is arranged on the side of the connecting frame away from the extrusion plate, the ends of the fixing frame are fixedly connected with the side plates and the bottom plate respectively, and a pushing hydraulic cylinder is mounted at the middle part of the fixing frame, the output end of the pushing hydraulic cylinder penetrates through the fixing frame and is fixedly connected with the connecting frame through a connecting seat.

[0010] Preferably, a plurality of connecting bosses are fixedly connected to the sides of the side plates away from each other, through holes are formed in the middle parts of the bottom plate and the steel mesh plate, a sand discharge port is fixedly connected to the lower end of the bottom plate at the through hole, a sealing plate is inserted into the sand discharge port, a pushing air cylinder is arranged on one side of the sealing plate, the pushing air cylinder is mounted at the bottom of the bottom plate, the output end of the pushing air cylinder is fixedly connected with the sealing plate through a connecting seat, and a negative pressure connecting pipe is arranged on one side of the sand discharge port, the negative pressure connecting pipe is in communication with the inside of the casting sand box.

[0011] Preferably, a plurality of fixing blocks are fixedly connected to the two ends of the third support plate, the fixing blocks are arranged correspondingly to the connecting bosses, spring damping assemblies are mounted on the upper ends of the fixing blocks, fixing supports are arranged on the two sides of the spring damping assemblies, the lower ends of the fixing supports are fixedly connected with the fixing blocks, connecting rods are slidably connected to the upper ends of the spring damping assemblies, the top of the connecting rod is rotatably connected with a locking block through a fixing pin, the middle part of the locking block is rotatably connected with the fixing supports on its two sides through a fixing pin, the locking block is located above the connecting boss and a non-slip pad is mounted on the lower end of the locking block.

[0012] Preferably, through holes are formed in the middle parts of the first support plate, the second support plate and the third support plate for the passage of molding sand.

[0013] Preferably, the model support comprises a fixed frame, sliding rails and fixed hooks, the fixed frame is arranged in a rectangular frame, sliding rails are arranged at the upper ends of two sides of the fixed frame, a plurality of fixed hooks are arranged at one end of the other two sides of the fixed frame, and the upper ends of the fixed hooks are fixed to the fixed frame by clamping the top of the side plate.

[0014] Preferably, a plurality of moving rods are arranged above the sliding rails, sliding blocks are fixedly connected to the lower ends of the two sides of the moving rods, the inner walls of the sliding blocks are slidably connected to the sliding rails, a connecting block is fixedly connected to one end of one side of the sliding block, the middle part of the connecting block is threadedly connected to the bidirectional screw rod, one end of the bidirectional screw rod is rotatably connected to the fixed frame, and the other end of the bidirectional screw rod is rotatably connected to the mounting block arranged in the middle part of the fixed frame.

[0015] Preferably, a driving assembly is arranged in the middle part of the bidirectional screw rod, the surface of the moving rod is clamped with a plurality of clamping blocks, the clamping blocks arranged on adjacent moving rods are correspondingly arranged, a clamping block is fixedly connected to one side of the clamping block, the inner side of the clamping block is arranged in an arc shape and connected with a rubber pad, the other side of the clamping block is threadedly connected with a plurality of quick release bolts, and one end of the quick release bolt extending into the clamping block is in abutment with the clamping groove opened on the surface of the moving rod.

[0016] Preferably, the driving assembly comprises a gear box, a rotating rod, a rotating handle, a first helical gear and a second helical gear, one side of the gear box is fixedly connected to the fixed frame, the top of the gear box is rotatably connected to the rotating rod, the upper end of the rotating rod is rotatably connected with the rotating handle, the lower end of the rotating rod is provided with the first helical gear, the first helical gear is engaged with the second helical gear on one side, and the second helical gear is fixedly arranged on the surface of the bidirectional screw rod.

[0017] Preferably, a sliding groove is arranged in the top of the gear box, a locking sliding block is slidably connected in the sliding groove, a wedge-shaped block is fixedly connected to the lower end of the locking sliding block, a resilient ratchet is arranged on one side of the wedge-shaped block, one end of the resilient ratchet is fixedly connected to the inner wall of the gear box, the locking sliding block is moved to press and bend the resilient ratchet downward to lock the second helical gear, an unlocking button is arranged on one side of the locking sliding block for locking the locking sliding block, and a clamping block corresponding to the unlocking button is arranged on one side of the locking sliding block and the lower end of the unlocking button.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1、The present application is provided with extrusion plate, can move along the sliding rail, extrusion plate is pushed by push hydraulic cylinder and moves, when the sand in the casting sand box is vibrated and compacted, the push hydraulic cylinder is extended to push the extrusion plate to move and extrude the sand in the casting sand box, which can further reduce the gap between the sand, improve the filling tightness, avoid the gap between the sand and the model surface, cause the support force of the sand to the foam model to be uneven, cause the model to deform or displace in the pouring process, produce casting defects.

[0020] 2、The present application is provided with vibration seat, vibration seat is internally provided with through hole for sand, when sand is discharged, push cylinder is pushed to open sand discharge port, at the same time, hydraulic cylinder is retracted to drive two extrusion plates to move away, vibration motor is started to drive casting sand box to vibrate, can vibrate the caked sand in the casting sand box, make the sand pass through the sand discharge port quickly, without turning the casting sand box, can quickly discharge sand, the sand discharge process is convenient and fast.

[0021] 3、The present application is provided with model support, through model support, multiple foam models can be clamped synchronously, the foam model can be kept in vertical state when placed in the casting sand box, and the model will not be inclined when filling sand, compared with artificial placing model alone, the operation efficiency is higher, at the same time, the metal liquid flow path deviation during casting is reduced, and the yield is improved. DRAWINGS

[0022] Figure 1 It is the structural diagram of the present application;

[0023] Figure 2 It is the structural diagram of the casting sand box in the present application;

[0024] Figure 3 It is the bottom structure diagram of the casting sand box in the present application;

[0025] Figure 4 It is the structural diagram of the vibration seat in the present application;

[0026] Figure 5 It is the side view structure diagram of the vibration seat in the present application;

[0027] Figure 6 It is the structural diagram of the model support in the present application;

[0028] Figure 7 It is Figure 6 The local enlarged diagram of A in the present application;

[0029] Figure 8 It is the structural diagram of the driving assembly in the present application;

[0030] Figure 9 It is the side view structure diagram of the driving assembly in the present application;

[0031] Figure 10 For Figure 9 The cross-sectional structure schematic view at A-A.

[0032] Reference numerals in the drawings are:

[0033] 1, casting sand box; 11, side plate; 111, sliding rail; 112, connecting boss; 12, extrusion plate; 121, connecting plate; 122, damping spring; 123, connecting frame; 124, fixing frame; 125, pushing hydraulic cylinder; 126, sealing gasket; 13, bottom plate; 131, steel mesh plate; 14, sand discharge port; 141, sealing plate; 15, pushing air cylinder; 16, negative pressure connecting pipe;

[0034] 2, moving support; 21, roller;

[0035] 3, vibrating seat; 31, first support plate; 311, support block; 312, mounting frame; 313, vibrating motor; 32, damping assembly; 33, second support plate; 331, damping pad; 34, lifting hydraulic cylinder; 35, third support plate; 36, fixing block; 361, fixing support; 37, spring damping assembly; 38, connecting rod; 39, locking block; 391, anti-skid pad;

[0036] 4, model support; 41, fixing frame; 42, sliding rail; 421, sliding block; 422, moving rod; 4221, clamping groove; 423, connecting block; 424, bidirectional screw rod; 43, clamping block; 431, clamping block; 432, rubber pad; 433, quick release bolt; 44, driving assembly; 441, gear box; 442, rotating rod; 443, rotating handle; 444, first helical gear; 445, second helical gear; 446, sliding groove; 447, locking sliding block; 4471, wedge-shaped block; 448, elastic ratchet; 449, unlocking button; 45, mounting block; 46, fixing hook. DETAILED DESCRIPTION

[0037] Certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers can refer to a component by different names. This document does not intend to distinguish between components that differ in name but not in function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to Also, the term "couple" or its derivatives refer to either an indirect or direct connection. The specific

[0038] As Figures 1-5As shown, a kind of lost foam casting device, including: casting sand box 1, moving support 2, vibration seat 3 and model support 4, casting sand box 1 is set to the upper of moving support 2, both ends of moving support 2 are rotatably connected with the roller 21, moving support 2 is used to drive casting sand box 1 moves along track, it is convenient to fill sand and place foam model in casting sand box 1, vibration seat 3 is set to the lower of casting sand box 1, vibration seat 3 is used to drive casting sand box 1 vibration, model support 4 is hung in the inside of casting sand box 1, model support 4 is used to clamping and fixed foam model, make foam model even arrangement and can when filling sand make model keep position unchanged.

[0039] Wherein, casting sand box 1 includes side plate 11, extrusion plate 12 and bottom plate 13, the inner wall of side plate 11 is fixedly connected with multiple sliding rails 111, both ends of extrusion plate 12 are slidably connected with sliding rail 111 and the inner wall of side plate 11, the upper end of bottom plate 13 is fixedly connected with steel mesh plate 131, the middle part of steel mesh plate 131 is provided with several small through holes, the diameter of through hole is less than the grain size of sand, the top of steel mesh plate 131 is slidably connected with the bottom of extrusion plate 12, sealing gasket 126 is installed at the connection of extrusion plate 12 and side plate 11 and steel mesh plate 131, sealing gasket 126 can seal the sliding connection when carrying out negative pressure suction, the outer side of extrusion plate 12 is fixedly connected with connecting plate 121, one side of connecting plate 121 is provided with connecting frame 123, multiple damping springs 122 are installed between connecting plate 121 and connecting frame 123, the side, away from extrusion plate 12 of connecting frame 123 is provided with fixed frame 124, the end of fixed frame 124 is fixedly connected with side plate 11 and bottom plate 13 respectively, push hydraulic cylinder 125 is installed in the middle part of fixed frame 124, the output end of push hydraulic cylinder 125 penetrates fixed frame 124 and is fixedly connected with connecting frame 123 by connecting seat, two push hydraulic cylinders 125 are simultaneously extended to push connecting frame 123 and extrusion plate 12 move, while casting sand box 1 is vibrated by vibration seat 3, it is extruded by two extrusion plates 12 simultaneously, form dynamic extrusion to sand, reduce the gap between sand, improve filling compactness, avoid the gap between sand and model to cause burr and other defects after casting.

[0040] As Figure 2 And Figure 3As shown, the side plates 11 are fixedly connected with a plurality of connecting bosses 112 on the side away from each other, the middle part of the bottom plate 13 and the steel mesh plate 131 is provided with a through hole, the lower end of the bottom plate 13 is fixedly connected with a sand outlet 14 at the through hole, the inside of the sand outlet 14 is inserted with a sealing plate 141, one side of the sealing plate 141 is provided with a push cylinder 15, the push cylinder 15 is installed at the bottom of the bottom plate 13, the output end of the push cylinder 15 is fixedly connected with the sealing plate 141 through a connecting seat, the sealing plate 141 can be pulled to control the opening or closing of the sand outlet 14 through the push cylinder 15, one side of the sand outlet 14 is provided with a negative pressure connecting pipe 16, the negative pressure connecting pipe 16 communicates with the inside of the casting sand box 1, the negative pressure connecting pipe 16 is connected with an external negative pressure pipeline, after the film is covered on the sand, the inside of the casting sand box 1 is negatively pressure pumped through the negative pressure connecting pipe 16, so that the inside of the sand is more compact.

[0041] As Figure 4As shown, the vibrating seat 3 comprises a first support plate 31, a damping assembly 32, a second support plate 33, a lifting hydraulic cylinder 34 and a third support plate 35, a plurality of support blocks 311 are fixedly connected to the upper end of the first support plate 31, four mounting frames 312 are fixedly connected to the lower end of the first support plate 31, the four mounting frames 312 are symmetrically arranged respectively, a vibrating motor 313 is installed on one side of each mounting frame 312, the vibrating motor 313 is used to drive the first support plate 31 to vibrate, two vibrating motors 313 are installed horizontally and the other two vibrating motors 313 are installed vertically, the horizontal and vertical vibrations drive the casting sand box 1 to vibrate, the vibration of the sand box 1 makes the sand particles rearrange and fill the gaps between the sand particles and the mold, generates vibration in multiple directions to enhance the multi-dimensional vibration effect, and improves the compactness of the sand, the second support plate 33 is arranged at the lower end of the first support plate 31, a plurality of damping assemblies 32 are installed between the first support plate 31 and the second support plate 33, the damping assemblies 32 are used to absorb the vibration generated by the first support plate 31 to avoid the vibration being transmitted downward, a plurality of lifting hydraulic cylinders 34 are installed at the upper end of the third support plate 35, the output ends of the lifting hydraulic cylinders 34 are connected with the second support plate 33 through damping pads 331, a plurality of fixing blocks 36 are fixedly connected to the two ends of the third support plate 35, the fixing blocks 36 are arranged correspondingly with the connecting bosses 112, a spring damping assembly 37 is installed at the upper end of each fixing block 36, fixed supports 361 are arranged on the two sides of the spring damping assembly 37, the lower ends of the fixed supports 361 are fixedly connected with the fixing blocks 36, a connecting rod 38 is slidably connected with the upper end of the spring damping assembly 37, the top of the connecting rod 38 is rotatably connected with a locking block 39 through a fixed pin, the middle part of the locking block 39 is rotatably connected with the fixed supports 361 on its two sides through a fixed pin, the locking block 39 is located above the connecting boss 112 and a non-slip pad 391 is installed at the lower end of the locking block 39, when it is needed to vibrate and compact the sand in the casting sand box 1, the plurality of lifting hydraulic cylinders 34 extend to push the second support plate 33 and the first support plate 31 to rise, the support blocks 311 abut against the bottom of the casting sand box 1 and drive the casting sand box 1 to rise, after the casting sand box 1 continuously rises, the lower end of the non-slip pad 391 abuts against the connecting boss 112, the damping spring 122 pushes one end of the locking block 39 to move upward, at the same time, the other end of the locking block 39 pushes the connecting rod 38 to move downward, the spring damping assembly 37 is internally provided with a spring to provide support for the connecting rod 38, when the locking block 39 is pressed against the connecting boss 112, the lifting hydraulic cylinder 34 stops extending, the vibrating motor 313 is started to drive the first support plate 31 and the casting sand box 1 to vibrate, the spring damping assembly 37 internally consumes the energy generated by external force through liquid flow and pressure change to absorb vibration and avoid the vibration being transmitted downward, the middle parts of the first support plate 31, the second support plate 33 and the third support plate 35 are all provided with through holes for the sand to pass through, when the sand is discharged, the discharge port 14 is opened by pushing the air cylinder 15, at the same time, the hydraulic cylinder 125 is retracted to drive the two pressing plates 12 to move away,The vibration motor 313 is started again to drive the casting sand box 1 to vibrate, the agglomerated molding sand in the casting sand box 1 can be scattered, the molding sand can be conveniently discharged through the sand discharge port 14, and the casting sand box 1 does not need to be turned over to quickly discharge sand.

[0042] Please refer to Figure 6 and 7 The model support 4 comprises a fixed frame 41, sliding rails 42 and fixing hooks 46. The fixed frame 41 is in the form of a rectangular frame, the upper ends of two sides of the fixed frame 41 are provided with the sliding rails 42, and one end of the other two sides of the fixed frame 41 is provided with a plurality of fixing hooks 46. The upper ends of the fixing hooks 46 are fixed to the fixed frame 41 by clamping the top of the side plate 11. The model support 4 is placed in the casting sand box 1 through the fixing hooks 46. The upper part of the sliding rail 42 is provided with a plurality of moving rods 422. The lower ends of the two sides of the moving rod 422 are fixedly connected with sliding blocks 421. The inner walls of the sliding blocks 421 are slidably connected with the sliding rails 42. One end of the sliding block 421 is fixedly connected with a connecting block 423. The middle part of the connecting block 423 is threadedly connected with a bidirectional screw rod 424. One end of the bidirectional screw rod 424 is rotatably connected with the fixed frame 41. The other end of the bidirectional screw rod 424 is rotatably connected with a mounting block 45 mounted in the middle part of the fixed frame 41.

[0043] The middle part of the bidirectional screw rod 424 is provided with a driving assembly 44. The driving assembly 44 is mounted on one side of the fixed frame 41. The surface of the moving rod 422 is clamped with a plurality of clamping blocks 43. The clamping blocks 43 arranged on adjacent moving rods 422 are correspondingly arranged. One side of the clamping block 43 is fixedly connected with a clamping block 431. The inner side of the clamping block 431 is arc-shaped and connected with a rubber pad 432. The other side of the clamping block 43 is threadedly connected with a plurality of quick-release screws 433. One end of the quick-release screw 433 extending into the clamping block 43 is in abutment with a clamping groove 4221 opened on the surface of the moving rod 422. The bidirectional screw rod 424 is driven to rotate by the driving assembly 44, so that the moving rods 422 on the two sides move relative to each other and approach each other. The moving rods 422 drive the clamping blocks 431 to approach each other. The rubber pads 432 on the clamping blocks 431 are in contact with the foam model, so as to avoid damaging the model. The two clamping blocks 431 clamp and fix the foam model. The clamping blocks 431 can be disassembled and replaced through the quick-release screws 433. The clamping blocks 431 matched with the model size can be replaced, and the position of the clamping blocks 431 can be conveniently adjusted. If the foam model is small, the number of clamping blocks 431 can be increased.

[0044] The driving assembly 44 comprises a gear box 441, a rotating rod 442, a rotating handle 443, a first helical gear 444 and a second helical gear 445. One side of the gear box 441 is fixedly connected with the fixed frame 41, the top of the gear box 441 is rotationally connected with the rotating rod 442, the upper end of the rotating rod 442 is rotationally connected with the rotating handle 443, the lower end of the rotating rod 442 is provided with the first helical gear 444, one side of the first helical gear 444 is engaged with the second helical gear 445, the second helical gear 445 is fixedly installed on the surface of the bidirectional screw rod 424, and rotating the rotating rod 442 can drive the second helical gear 445 to rotate through the first helical gear 444, thereby driving the bidirectional screw rod 424 to rotate. The top of the gear box 441 is provided with a sliding groove 446, the inside of the sliding groove 446 is slidably connected with a locking sliding block 447, the lower end of the locking sliding block 447 is fixedly connected with a wedge block 4471, one side of the wedge block 4471 is provided with an elastic ratchet 448, one end of the elastic ratchet 448 is fixedly connected with the inner wall of the gear box 441, the locking sliding block 447 moves to extrude the elastic ratchet 448 to bend downward to lock the second helical gear 445, the lower end of the elastic ratchet 448 is clamped in the teeth of the second helical gear 445 to lock the second helical gear 445, one side of the locking sliding block 447 is provided with an unlocking button 449 for locking, and one side of the locking sliding block 447 and the lower end of the unlocking button 449 are provided with corresponding clamping blocks. When the locking sliding block 447 approaches the unlocking button 449, the clamping block on one side of the locking sliding block 447 is clamped with the clamping block at the lower end of the unlocking button 449, and the unlocking button 449 is pushed by the elastic force of the bottom spring at the same time, pressing the unlocking button 449 makes the clamping block at the lower end of the unlocking button 449 separate from the clamping block on one side of the locking sliding block 447, releases the locking sliding block 447 and makes the elastic ratchet 448 away from the second helical gear 445, the second helical gear 445 can rotate at this time, thereby driving the two moving rods 422 to move away, and releasing the foam model.

[0045] The principle of the present application is that the foamed model after coating is placed between the two clamping blocks 431, the rotating rod 442 is rotated, the moving rods 422 on both sides are moved and close to each other, the foamed model is clamped and fixed through the clamping blocks 431, a plurality of foamed models can be clamped at one time, the locking block 447 is pushed to lock the second bevel gear 445 after clamping, so as to avoid loosening caused by the movement of the sliding block 421, the model support 4 clamped with the model is placed in the casting sand box 1, the casting sand box 1 is moved to the vibration seat 3 above through the moving support 2 for sand filling, and the filling amount is stopped after reaching the standard, then the unlocking button 449 is pressed to release the foamed model, and the model support 4 is taken off, the plurality of lifting hydraulic cylinders 34 are extended to push the second support plate 33 and the first support plate 31 to rise, the supporting block 311 abuts against the bottom of the casting sand box 1 and drives the casting sand box 1 to rise, the lower end of the anti-skid pad 391 abuts against the connecting boss 112 after the casting sand box 1 continues to rise, the vibration motor 313 is started to drive the first support plate 31 and the casting sand box 1 to vibrate, and the two pushing hydraulic cylinders 125 are simultaneously extended to push the connecting frame 123 and the extrusion plate 12 to move, the two extrusion plates 12 are extruded with each other while the casting sand box 1 is vibrating, dynamic extrusion of the sand is formed, the gap between the sands is reduced, and the filling compactness is improved, then the film is covered, and the casting sand box 1 is negatively pumped through the negative pressure connecting pipe 16 to further improve the compactness of the sand, after casting and cooling, the sand outlet 14 is opened through the pushing cylinder 15, the two extrusion plates 12 are driven away by the retraction of the pushing hydraulic cylinder 125, and the casting sand box 1 is vibrated again by the vibration motor 313, so that the agglomerated sand in the casting sand box 1 is scattered, the sand can quickly pass through the sand outlet 14 and be discharged, and the casting sand box 1 does not need to be turned over to quickly discharge the sand, which is more convenient.

[0046] Finally, it should be noted that, in the description of the positions of various components and the cooperation relationship therebetween, etc., one pair of components is usually taken as an example, but those skilled in the art should understand that such positions and cooperation relationship are also applicable to other components or other pairs of components.

[0047] The above merely describes exemplary embodiments of the present application, but is not used to limit the protection scope of the present application, and the protection scope of the present application is defined by the appended claims.

Claims

1. An expendable pattern casting apparatus characterized by comprising: 1) a mold forming unit which forms a mold by using a mold material, Include: The casting sand box (1), the moving support (2), the vibrating seat (3) and the model support (4), the casting sand box (1) is set on the moving support (2), the both ends of the moving support (2) are rotatably connected with the roller (21), the moving support (2) is used to drive the casting sand box (1) to move, the vibrating seat (3) is set below the casting sand box (1), the vibrating seat (3) is used to drive the casting sand box (1) to vibrate, the model support (4) is suspended in the inside of the casting sand box (1), and the model support (4) is used to clamp and fix the foam model; The casting sand box (1) includes a side plate (11) and an extrusion plate (12), the inner wall of the side plate (11) is fixedly connected with a plurality of sliding rails (111), and the both ends of the extrusion plate (12) are slidably connected with the sliding rails (111) and the inner wall of the side plate (11); The vibrating seat (3) includes a first support plate (31), a damping assembly (32), a second support plate (33), a lifting hydraulic cylinder (34) and a third support plate (35), the upper end of the first support plate (31) is fixedly connected with a plurality of support blocks (311), the lower end of the first support plate (31) is fixedly connected with four mounting frames (312), the four mounting frames (312) are symmetrically arranged, the vibrating motor (313) is installed on one side of the mounting frame (312), the vibrating motor (313) is used to drive the first support plate (31) to vibrate, the second support plate (33) is arranged at the lower end of the first support plate (31), a plurality of damping assemblies (32) are installed between the first support plate (31) and the second support plate (33), the damping assembly (32) is used to absorb the vibration generated by the first support plate (31), a plurality of lifting hydraulic cylinders (34) are installed on the upper end of the third support plate (35), and the output end of the lifting hydraulic cylinder (34) is connected with the second support plate (33) through a damping pad (331); The model support (4) includes a fixed frame (41), a sliding rail (42) and a fixed hook (46), a plurality of moving rods (422) are arranged above the sliding rail (42), a plurality of sliding blocks (421) are fixedly connected to the both sides of the lower end of the moving rod (422), the inner wall of the sliding block (421) is slidably connected with the sliding rail (42), one end of the sliding block (421) is fixedly connected with a connecting block (423), the middle part of the connecting block (423) is threadedly connected with a bidirectional screw rod (424), one end of the bidirectional screw rod (424) is rotatably connected with the fixed frame (41), the other end of the bidirectional screw rod (424) is rotatably connected with the mounting block (45) mounted in the middle part of the fixed frame (41), and the middle part of the bidirectional screw rod (424) is provided with a driving assembly (44). The driving assembly (44) comprises a gear box (441), a rotating rod (442), a rotating handle (443), a first helical gear (444) and a second helical gear (445), one side of the gear box (441) is fixedly connected with the fixed frame (41), the top of the gear box (441) is rotationally connected with the rotating rod (442), the upper end of the rotating rod (442) is rotationally connected with the rotating handle (443), the lower end of the rotating rod (442) is provided with the first helical gear (444), one side of the first helical gear (444) is engaged with the second helical gear (445), and the second helical gear (445) is fixedly installed on the surface of the bidirectional screw rod (424).

2. An apparatus for lost foam casting according to claim 1, wherein: The casting sand box (1) further comprises a bottom plate (13), the upper end of the bottom plate (13) is fixedly connected with a steel mesh plate (131), the top of the steel mesh plate (131) is slidably connected with the bottom of the extrusion plate (12), the connection part of the extrusion plate (12) and the side plate (11) and the steel mesh plate (131) is provided with a sealing gasket (126), the outer side of the extrusion plate (12) is fixedly connected with a connecting plate (121), one side of the connecting plate (121) is provided with a connecting frame (123), a plurality of damping springs (122) are installed between the connecting plate (121) and the connecting frame (123), the side, away from the extrusion plate (12), of the connecting frame (123) is provided with a fixing frame (124), and the ends of the fixing frame (124) are fixedly connected with the side plate (11) and the bottom plate (13); a pushing hydraulic cylinder (125) is installed in the middle of the fixing frame (124), and the output end of the pushing hydraulic cylinder (125) penetrates through the fixing frame (124) and is fixedly connected with the connecting frame (123) through a connecting seat.

3. An apparatus for lost foam casting according to claim 2, wherein: The side plates (11) are fixedly connected with a plurality of connecting bosses (112) away from each other, the middle parts of the bottom plate (13) and the steel mesh plate (131) are provided with through holes, the lower end of the bottom plate (13) is fixedly connected with a sand discharge port (14) at the through hole, the inside of the sand discharge port (14) is inserted with a sealing plate (141), one side of the sealing plate (141) is provided with a pushing air cylinder (15), the pushing air cylinder (15) is installed at the bottom of the bottom plate (13), the output end of the pushing air cylinder (15) is fixedly connected with the sealing plate (141) through a connecting seat, one side of the sand discharge port (14) is provided with a negative pressure connecting pipe (16), and the negative pressure connecting pipe (16) is in communication with the inside of the casting sand box (1).

4. The lost foam casting apparatus of claim 1, wherein: Both ends of the third supporting plate (35) are fixedly connected with a plurality of fixed blocks (36), the fixed blocks (36) are correspondingly arranged with the connecting bosses (112), the upper end of the fixed block (36) is provided with a spring damping assembly (37), both sides of the spring damping assembly (37) are provided with fixed supports (361), the lower end of the fixed support (361) is fixedly connected with the fixed block (36), the upper end of the spring damping assembly (37) is slidably connected with a connecting rod (38), the top of the connecting rod (38) is rotatably connected with a locking block (39) through a fixed pin, the middle of the locking block (39) is rotatably connected with the fixed supports (361) on both sides thereof through a fixed pin, the locking block (39) is located above the connecting boss (112) and a non-slip pad (391) is mounted at the lower end of the locking block (39).

5. The lost foam casting apparatus of claim 1, wherein: The middle part of the first supporting plate (31), the second supporting plate (33) and the third supporting plate (35) is provided with a through hole for the sand to pass through.

6. The lost foam casting apparatus of claim 1, wherein: The fixed frame (41) is arranged in a rectangular frame, the upper end of two sides of the fixed frame (41) is provided with a sliding rail (42), one end of the other two sides of the fixed frame (41) is provided with a plurality of fixed hooks (46), the upper end of the fixed hook (46) is fixed to the fixed frame (41) by clamping the top of the side plate (11).

7. The lost foam casting apparatus of claim 1, wherein: The driving assembly (44) is installed on one side of the fixed frame (41), the surface of the moving rod (422) is clamped with a plurality of clamping blocks (43), the clamping blocks (43) arranged on adjacent moving rods (422) are correspondingly arranged, one side of the clamping block (43) is fixedly connected with a clamping block (431), the inner side of the clamping block (431) is arranged in an arc shape and connected with a rubber pad (432), the other side of the clamping block (43) is threadedly connected with a plurality of quick release bolts (433), one end of the quick release bolt (433) extending into the clamping block (43) is abutted with the clamping groove (4221) formed on the surface of the moving rod (422).

8. The lost foam casting apparatus of claim 1, wherein: The top of the gear box (441) is provided with a sliding groove (446), the sliding groove (446) is slidably connected with a locking slide block (447), the lower end of the locking slide block (447) is fixedly connected with a wedge block (4471), one side of the wedge block (4471) is provided with an elastic ratchet (448), one end of the elastic ratchet (448) is fixedly connected to the inner wall of the gear box (441), the locking slide block (447) is moved to press the elastic ratchet (448) to bend downward to lock the second bevel gear (445), one side of the locking slide block (447) is provided with an unlocking button (449) for locking, one side of the locking slide block (447) and the lower end of the unlocking button (449) are provided with corresponding clamping blocks.

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