Shell making machine for lost wax casting

Abstract

The invention discloses a shell making machine for lost wax casting, and relates to the technical field of lost wax casting, the shell making machine comprises a circulating conveying line, and a first slurry dipping assembly and a sand spraying mechanism which are sequentially arranged along the conveying direction of the circulating conveying line, and the bottom surface of a moving part of the circulating conveying line is fixedly connected with uniformly distributed suspension assemblies; the suspension assembly comprises a fixing rod synchronously moving along with a moving part of the circulating conveying line, the bottom end of the fixing rod is rotationally connected with a telescopic part which stretches out and draws back vertically, the bottom end of the telescopic part is detachably connected with a lifting tool, the first slurry dipping assembly comprises a slurry dipping barrel and a lifting power device driving the telescopic part to ascend and descend, and the lifting power device drives the telescopic part to ascend and descend. And the slurry dipping barrel is correspondingly arranged below the lifting appliance. According to the shell making machine for lost wax casting adopting the structure, a wax mold can be conveniently taken and placed, shutdown and production halt are not needed when the wax mold is taken and placed, and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of lost wax casting, in particular to a shell making machine for lost wax casting. Background Art

[0002] Precision casting is a general term for the process of obtaining castings with precise dimensions. Compared with the traditional sand casting process, the castings obtained by precision casting are more precise in size and have better surface finish. It includes: investment casting, ceramic casting, metal casting, pressure casting and lost foam casting. Precision casting is also called lost wax casting. Its products are precise, complex, close to the final shape of the parts, and can be used directly without or with little processing. It is an advanced process for near-net-shape forming.

[0003] In the existing precision casting process, the surface of the wax mold is generally finely trimmed and assembled according to the casting requirements, and then the wax mold is artificially coated and sprinkled with sand. Since multiple coatings and sands are required, this production method wastes manpower and has low work efficiency, and is gradually eliminated by society. The Chinese patent with application number 201822240904.8 provides a shell making machine for precision casting, in which the motor drives the drive shaft to rotate through the motor shaft, and the connecting rod arranged on the surface of the drive shaft starts to rotate, and the fixed frame also starts to rotate under the drive of the connecting rod. Because the fixed frame is movably connected with a rotating shaft, the wax mold located below the rotating shaft enters the interior of the coating chamber in turn under the driving action of the motor to perform the coating operation. After the first coating is completed, the sand is sprinkled, and the second coating operation is continued with the continuous rotation of the motor, and then the wax mold is dried and formed. The above structure has the following problems when used: the wax mold needs to be installed in batches on the rotating shaft in the coating chamber, and then the wax mold is taken out in batches. In this process, the wax mold is inconvenient to take and put due to limited space, and the wax mold needs to be stopped for taking and putting, and the work efficiency is low.

[0004] Therefore, we propose a shell making machine for precision casting to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a shell making machine for lost wax casting, which is convenient for taking and placing wax molds, and there is no need to stop work and production when taking and placing the wax molds, so the work efficiency is high.

[0006] To achieve the above-mentioned objectives, the present invention provides a shell making machine for lost wax casting, comprising a circulating conveyor line and a first slurry dipping assembly and a sand sprinkling mechanism sequentially arranged along the conveying direction of the circulating conveyor line, the bottom surface of the moving part of the circulating conveyor line is fixedly connected with a uniformly distributed suspension assembly, the suspension assembly comprises a fixed rod that moves synchronously with the moving part in the circulating conveyor line, the bottom end of the fixed rod is rotatably connected to a vertically telescopic telescopic part, the bottom end of the telescopic part is detachably connected to a hanger, the first slurry dipping assembly comprises a slurry dipping bucket and a lifting power device for driving the telescopic part to lift and lower, the slurry dipping bucket is correspondingly arranged below the hanger.

[0007] Preferably, the telescopic part includes a connecting part and a telescopic part arranged in the upper and lower parts, the connecting part includes an upper turntable, the middle part of the upper turntable is provided with a center hole compatible with the fixed rod structure, and the upper turntable is overlapped on the tray at the bottom end of the fixed rod, the bottom surface of the upper turntable is fixedly connected with a connecting tube located at the periphery of the tray, the telescopic part includes a lower turntable, a spring is fixedly connected between the lower turntable and the upper turntable, the top surface of the lower turntable is fixedly connected with an insertion rod arranged in a one-to-one correspondence with the connecting tube, and the curved surface of the lower turntable is provided with a convex ring arranged along its circumferential direction.

[0008] Preferably, the lifting power device includes a power box, a screw rod is arranged along its height direction, a vertical through groove is arranged corresponding to the screw rod on the side wall of the power box, the top end of the screw rod is connected to the rotating motor, the nut seat on the screw rod is fixedly connected to the lifting seat located in the vertical through groove, a horizontally arranged first cylinder is provided on the lifting seat, and a pressure block arranged corresponding to the convex ring is fixedly connected to the output end of the first cylinder.

[0009] Preferably, the sling includes an integrally connected horizontal plug block and a threaded rod, the horizontal plug block is adapted to a plug hole structure horizontally arranged on the bottom surface of the lower turntable, and a rubber layer is provided on the outer wall of the horizontal plug block, a wax mold cover plate is fixedly connected to the threaded rod, and two symmetrically arranged plug holes are provided on the curved surface of the wax mold cover plate.

[0010] Preferably, the sand-sprinkling mechanism comprises a lifting drive assembly and a sand-sprinkling assembly, the lifting drive assembly has the same structure as the lifting power device, the sand-sprinkling assembly comprises a sand-sprinkling bucket, the top surface of the sand-sprinkling bucket is provided with a first semicircular top plate and a second semicircular top plate which are arranged in a mirror-symmetrical manner, the curved side walls of the first semicircular top plate and the second semicircular top plate are both provided with uniformly distributed teeth, the end surfaces of the first semicircular top plate and the second semicircular top plate which are close to each other are both provided with semicircular through grooves, the two semicircular through grooves are matched with the wax mold cover plate structure after being spliced, and the semicircular through grooves are provided with plug posts which are matched with the socket structure, the first The top surfaces of the semicircular top plate and the second semicircular top plate are both provided with semi-annular grooves, the two semi-annular grooves are connected end to end, and a slider adapted to the structure thereof is provided in each of the two semi-annular grooves, and the two sliders are respectively connected to a push-pull power device, and the push-pull directions of the two push-pull power devices are located on the same straight line, and a mounting seat is provided on the side wall of the sand-drenching bucket, and a vertically arranged lifting cylinder is fixedly connected to the mounting seat, and the output end of the lifting cylinder is fixedly connected to the lifting plate, and a rotary drive motor is fixedly connected to the lifting plate, and the output shaft of the rotary drive motor is connected to a drive gear, and the drive gear is adapted to the tooth structure;

[0011] The sand shower bucket comprises a sand shower part and a sand receiving part which are detachably connected up and down. At least two rows of sandblasting heads are arranged on the curved inner wall of the sand shower part. Each row of sandblasting heads is evenly distributed along the height direction of the sand shower part. A movable wheel is arranged on the bottom plate of the sand receiving part. The mounting seat is fixedly connected to the curved outer wall of the sand shower part.

[0012] Preferably, the inclination angles of the sandblasting heads in each row are different, wherein the two rows of sandblasting heads are arranged to be inclined downward and inclined upward respectively, and each of the sandblasting heads is connected to the sand storage bin (3217) through a conveying pipe.

[0013] Preferably, the push-pull power device comprises a support seat, the support seat is fixedly connected to the sand shower part, a push-pull cylinder is provided on the top surface of the support seat, and a telescopic rod of the push-pull cylinder is fixedly connected to the slider via a bent rod.

[0014] Preferably, a roller is provided at the bottom of the dipping barrel, a perspective window is provided on the side wall of the dipping barrel along its height direction, and scale lines are provided on the perspective window along its height direction.

[0015] Preferably, the moving component is an annular toothed belt, and the circulating conveyor line includes a suspended annular track, the annular toothed belt and a driving gear, the annular toothed belt is located in the annular track and is adapted to the annular track structure, a clearance hole is provided on the top surface of the annular track, the driving gear is provided in the clearance hole, the driving gear is meshed and connected with the annular toothed belt, and the driving gear is connected to the output end of the conveying motor, and an annular through groove is provided on the bottom surface of the annular track for the fixing rod to pass through.

[0016] Preferably, a second slurry dipping assembly is further provided on the circulating conveying line, and the second slurry dipping assembly is located on a side of the sand sprinkling mechanism away from the first slurry dipping assembly, and the second slurry dipping assembly has the same structure as the first slurry dipping assembly.

[0017] Therefore, the present invention adopts a lost wax casting shell making machine with the above structure, which has the following beneficial effects:

[0018] 1. The hanger in the suspension assembly is detachable. After the hanger is connected to the wax model, the hanger can be used to conveniently and quickly realize the disassembly and installation between the wax model and the telescopic parts in the suspension assembly, thereby realizing the rapid placement and take-up of the wax model on the circulating conveyor line. The wax model can be placed intermittently during the slurry dipping and sand sprinkling processes without stopping work and production, which has high work efficiency.

[0019] 2. The telescopic parts in the suspension assembly are extended and retracted by utilizing the lifting power device. After the telescopic parts are extended, the wax mold descends into the slurry dipping barrel. After the telescopic parts are retracted and reset, the wax mold is taken out of the slurry dipping barrel to complete the slurry dipping process. No manual slurry dipping is required, which reduces the labor intensity in the shell making process and improves production efficiency.

[0020] 3. The slurry depth of the wax model is easy to control. On the one hand, the slurry depth can be adjusted by changing the lifting height of the wax model driven by the lifting power device. On the other hand, the scale line in the perspective window on the slurry bucket can be used to facilitate the staff to understand the real-time height of the slurry, and then add material when there is a shortage of material to ensure the slurry depth.

[0021] 4. Use a rotary drive motor to drive the driving gear to rotate, the driving gear drives the first semicircular top plate and the second semicircular top plate to rotate, the first semicircular top plate and the second semicircular top plate drive the wax mold cover plate and the telescopic part to rotate, and the wax mold cover plate drives the wax mold to rotate, so that the wax mold can be evenly sprinkled with sand in the sand bucket to avoid dead corners of sand sprinkler.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a shell making machine for lost wax casting of the present invention;

[0024] Figure 2 It is a structural schematic diagram of an embodiment of a suspension assembly in a shell making machine for lost wax casting of the present invention;

[0025] Figure 3 It is a structural schematic diagram of an embodiment of a lifting power device in a shell making machine for lost wax casting of the present invention;

[0026] Figure 4 The present invention is a schematic structural diagram of an embodiment of a sand sprinkling assembly in a shell making machine for lost wax casting.

[0027] Reference numerals

[0028] 1. Circular conveyor line; 101. Circular track; 102. Driving gear; 103. Conveying motor; 2. First slurry dipping assembly; 21. Slurry dipping bucket; 22. Lifting power device; 221. Power box; 222. Vertical through slot; 223. Rotating motor; 224. Lifting seat; 225. First cylinder; 226. Press block; 3. Sand spraying mechanism; 31. Lifting drive assembly; 32. Sand spraying assembly; 321. Sand spraying bucket; 32101. Sand spraying part; 32102. Sand receiving part; 322. First semicircular top plate; 323. Second semicircular top plate; 324. Tooth; 325. Semicircular through slot; 326. Insert column; 327. Semicircular slot; 3 28. Slider; 329. Support seat; 3210. Push-pull cylinder; 3211. Bending rod; 3212. Mounting seat; 3213. Lifting cylinder; 3214. Lifting plate; 3215. Rotating drive motor; 3216. Driving gear; 3217. Sand storage bin; 4. Suspension assembly; 401. Fixed rod; 402. Tray; 403. Telescopic member; 4031. Upper turntable; 4032. Connecting tube; 4033. Lower turntable; 4034. Spring; 4035. Convex ring; 4036. Insert rod; 404. Lifting device; 4041. Horizontal insert block; 4042. Threaded rod; 4043. Wax mold cover plate; 4044. Socket; 5. Perspective window. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0030] Example

[0031] like Figure 1-4As shown, a shell making machine for lost wax casting includes a circulating conveyor line 1 and a first slurry dipping assembly 2 and a sand sprinkling mechanism 3 sequentially arranged along the conveying direction of the circulating conveyor line 1. The bottom surface of the moving part of the circulating conveyor line 1 is fixedly connected with a uniformly distributed suspension assembly 4. In this embodiment, the moving part is an annular toothed belt. The circulating conveyor line 1 includes an annular track 101, an annular toothed belt and a driving gear 102 suspended therefrom. The annular toothed belt is located in the annular track 101 and is adapted to the structure of the annular track 101. A clearance hole is provided on the top surface of the annular track 101. A driving gear 102 is provided in the clearance hole. The driving gear 102 is meshed and connected with the annular toothed belt, and the driving gear 102 is connected to the output end of the conveying motor 103. The bottom surface of the annular track 101 is provided with an annular through groove for the fixing rod 401 on the suspension assembly 4 to pass through. After the conveying motor 103 drives the driving gear 102 to rotate, the driving gear 102 drives the annular toothed belt to rotate in the annular track 101, thereby realizing the movement of the suspension assembly 4, and the fixing rod 401 of the suspension assembly 4 can move cyclically with the annular toothed belt.

[0032] The suspension assembly 4 includes a fixed rod 401 that moves synchronously with the moving parts in the circulating conveyor line 1, and the bottom end of the fixed rod 401 is rotatably connected to a telescopic member 403 that telescopes vertically. The telescopic member 403 includes a connecting portion and a telescopic portion that are arranged up and down, and the connecting portion includes an upper turntable 4031. The middle part of the upper turntable 4031 is provided with a center hole that is compatible with the structure of the fixed rod 401, and the upper turntable 4031 is overlapped on the tray 402 at the bottom end of the fixed rod 401, and the bottom surface of the upper turntable 4031 is fixedly connected with a connecting tube 4032 located on the periphery of the tray 402. The telescopic portion includes a lower turntable 4033, and a spring 4034 is fixedly connected between the lower turntable 4033 and the upper turntable 4031, and the spring 4034 can realize a soft connection between the upper turntable 4031 and the lower turntable 4033. The curved surface of the lower turntable 4033 is provided with a convex ring 4035 arranged along its circumferential direction. The top surface of the lower turntable 4033 is fixedly connected with an insertion rod 4036 which is arranged in a one-to-one correspondence with the connecting tube 4032. The insertion rod 4036 can move in the connecting tube 4032. The coordinated use of the insertion rod 4036 and the connecting tube 4032 can guide the lifting and lowering of the lower turntable 4033.

[0033] The bottom end of the telescopic member 403 is detachably connected to the sling 404, and the sling 404 includes an integrally connected horizontal plug block 4041 and a threaded rod 4042. The horizontal plug block 4041 is adapted to the plug hole structure horizontally arranged on the bottom surface of the lower turntable 4033, and a rubber layer is arranged on the outer wall of the horizontal plug block 4041, which can increase the stability of the connection between the horizontal plug block 4041 and the plug hole, thereby ensuring the stability of the connection between the sling 404 and the telescopic member 403, so that the plug hole 4044 on the sling 404 can be aligned with the plug column 326. After the sling 404 and the telescopic member 403 are installed, the threaded rod 4042 is coaxially arranged with the lower turntable 4033, thereby ensuring the stability of the position of the sling 404 when the telescopic member 403 rotates. The threaded rod 4042 is fixedly connected with a wax mold cover plate 4043, which is used to block the molten iron pouring port, and the bottom end of the threaded rod 4042 is used to be threadedly connected with the embedded parts in the wax mold to achieve a fixed connection between the hanger 404 and the wax mold. Two symmetrically arranged plug holes 4044 are provided on the curved surface of the wax mold cover plate 4043, which are used to cooperate with the plug column 326 to achieve its connection with the first semicircular top plate 322 and the second semicircular top plate 323.

[0034] The first slurry dipping assembly 2 includes a slurry dipping bucket 21 and a lifting power device 22 for driving the telescopic part to rise and fall. The slurry dipping bucket 21 is correspondingly arranged below the hanger 404, and rollers are arranged at the bottom of the slurry dipping bucket 21, which facilitates the movement and replacement of the slurry dipping bucket 21. The side wall of the slurry dipping bucket 21 is provided with a perspective window 5 arranged along its height direction, and the perspective window 5 is provided with scale lines arranged along its height direction, and the scale lines facilitate the staff to determine the liquid level of the slurry.

[0035] The lifting power device 22 includes a power box 221, in which a screw rod is arranged along its height direction, and a vertical through slot 222 corresponding to the screw rod is arranged on the side wall of the power box 221, and the top of the screw rod is connected to the rotating motor 223. The nut seat on the screw rod is fixedly connected to the lifting seat 224 located in the vertical through slot 222, and the lifting seat 224 is provided with a horizontally arranged first cylinder 225, and the output end of the first cylinder 225 is fixedly connected to a pressing block 226 corresponding to the convex ring 4035. The rotation of the rotating motor 223 can drive the lifting seat 224 to move up and down, and the first cylinder 225 can drive the pressing block 226 to move in the horizontal direction. The coordinated use of the rotating motor 223 and the first cylinder 225 in the lifting power device 22 can make the pressing block 226 contact with the convex ring 4035 on the telescopic member 403 and drive the telescopic part and the wax mold on the telescopic member 403 to move up and down to a certain height, thereby completing the slurry dipping process.

[0036] The sand-sprinkling mechanism 3 includes a lifting drive assembly 31 and a sand-sprinkling assembly 32. The lifting drive assembly 31 has the same structure as the lifting power device 22. The coordinated use of the rotating motor 223 and the first cylinder 225 in the lifting drive assembly 31 can make the pressing block 226 contact with the convex ring 4035 on the telescopic member 403 and drive the telescopic part and the wax mold on the telescopic member 403 to lift and lower to a certain height, thereby enabling the socket 4044 on the sling 404 to move to the same horizontal height as the plug column 326.

[0037] The sand pouring assembly 32 includes a sand pouring bucket 321. The top surface of the sand pouring bucket 321 is provided with a first semicircular top plate 322 and a second semicircular top plate 323 arranged in mirror symmetry. The curved side walls of the first semicircular top plate 322 and the second semicircular top plate 323 are provided with uniformly distributed teeth 324. The end surfaces of the first semicircular top plate 322 and the second semicircular top plate 323 close to each other are provided with semicircular through grooves 325. After the two semicircular through grooves 325 are assembled, they are adapted to the structure of the wax mold cover plate 4043, and the semicircular through grooves 325 are provided with plug posts 326 adapted to the structure of the socket 4044. The top surfaces of the first semicircular top plate 322 and the second semicircular top plate 323 are provided with semi-annular grooves 327, and the two semi-annular grooves 327 are connected end to end. A slider 328 adapted to its structure is provided in each of the two semi-annular grooves 327, and the two sliders 328 are respectively connected to a push-pull power device. The push-pull directions of the two push-pull power devices are located on the same straight line, and the push-pull power device includes a support seat 329. The support seat 329 is fixedly connected to the sand-sprinkling part 32101, and a push-pull cylinder 3210 is provided on the top surface of the support seat 329, and the telescopic rod of the push-pull cylinder 3210 is fixedly connected to the slider 328 through a bent rod 3211. When in use, the lifting drive assembly 31 brings the telescopic part and the sling 404 on the telescopic member 403 down, so that the socket 4044 on the sling 404 is just opposite to the plug column 326 on the first semicircular top plate 322 and the second semicircular top plate 323, and the two push-pull cylinders 3210 can drive the first semicircular top plate 322 and the second semicircular top plate 323 to contact and separate. After the first semicircular top plate 322 and the second semicircular top plate 323 are in contact, the plug column 326 is inserted into the socket 4044. After the first semicircular top plate 322 and the second semicircular top plate 323 are separated, the plug column 326 is removed from the socket 4044.

[0038] A mounting seat 3212 is provided on the side wall of the sand-sprinkling bucket 321, and a vertically arranged lifting cylinder 3213 is fixedly connected to the mounting seat 3212. The output end of the lifting cylinder 3213 is fixedly connected to the lifting plate 3214, and a rotary drive motor 3215 is fixedly connected to the lifting plate 3214. The output shaft of the rotary drive motor 3215 is connected to a driving gear 3216, and the driving gear 3216 is adapted to the structure of the teeth 324. After the lifting cylinder 3213 drives the lifting plate 3214 and the rotary drive motor 3215 to rise, the driving gear 3216 is meshed and connected with the teeth 324. After the rotary drive motor 3215 is started to drive the driving gear 3216 to rotate, the driving gear 3216 causes the first semicircular top plate 322 and the second semicircular top plate 323 to rotate, thereby driving the sling 404 and the telescopic member 403 to rotate.

[0039] The sand shower bucket 321 includes a sand shower part 32101 and a sand receiving part 32102 which are detachably connected to each other, and a mounting seat 3212 is fixedly connected to the curved outer wall of the sand shower part 32101. At least two rows of sandblasting heads are arranged on the curved inner wall of the sand shower part 32101, and each row of sandblasting heads is evenly distributed along the height direction of the sand shower part 32101. A movable wheel is arranged on the bottom plate of the sand receiving part 32102, and the sand receiving part 32102 is used to collect the excess zirconium sand ejected, and the movable wheel facilitates the movement of the sand receiving part 32102, thereby facilitating the transfer of the excess zirconium sand.

[0040] The inclination angle of each row of the sandblasting heads is different, and the two rows of sandblasting heads are respectively arranged to be inclined downward and inclined upward, and each of the sandblasting heads is connected to the sand storage bin 3217 through a conveying pipe. When the wax mold on the hanger 404 rotates under the drive of the driving gear 3216, the sandblasting head can evenly spray zirconium sand with smaller particle size on the surface of the wax mold to avoid dead corners of sand spraying.

[0041] The circulation conveying line 1 is also provided with a second slurry dipping assembly, which is located on the side of the sand shower mechanism 3 away from the first slurry dipping assembly 2, and has the same structure as the first slurry dipping assembly 2. The second slurry dipping assembly is used to perform secondary slurry dipping on the wax model that has completed the sand showering procedure, so that the wax model can be covered with a layer of zircon sand with larger particle size as needed.

[0042] When in use, the threaded rod 4042 on the hanger 404 is threadedly connected to the embedded part on the wax model, and then the hanger 404 is fixed to the bottom of the telescopic part 403 using the horizontal plug block 4041, so that the wax model can be transported by the circulating conveyor line 1. The circulating conveyor line 1 pauses for a certain period of time at each interval between each workstation. During this time, the staff can take and place the wax model, the first slurry dipping component 2 and the second slurry dipping component can perform the slurry dipping process, and the sand sprinkling mechanism 3 can perform the sand sprinkling process. When the wax model is transferred to the top of the slurry bucket 21, the lifting power device 22 makes the wax model descend and immerse it in the slurry in the slurry bucket 21, and then rises and resets. When the wax model is transferred to the top of the sand pouring bucket 321, the lifting drive assembly 31 makes the wax model descend and enter the sand pouring bucket 321, and the socket 4044 on the hanger 404 descends to a position opposite to the plug column 326, and then the push-pull cylinder 3210 is started to make the first semicircular top plate 322 and the second semicircular top plate 323 contact. At this time, the plug column 326 is inserted into the socket 4044, driving After the movable gear 3216 rises and meshes with the tooth 324 under the drive of the lifting cylinder 3213, the rotary drive motor 3215 drives the drive gear 3216 to rotate, thereby causing the wax model to rotate. When the wax model starts to rotate, the sandblasting head sprays out zirconium sand with smaller particles to achieve uniform sand spraying of the wax model. After rotating a number of integer circles as needed, the rotary drive motor 3215 is turned off, and the lifting cylinder 3213 and the push-pull cylinder 3210 are reset in turn, and then the pressure block 226 in the lifting drive assembly 31 is also reset, causing the wax model to reset and rise.

[0043] Therefore, the present invention adopts a shell making machine for lost wax casting with the above structure, which is convenient for taking and placing the wax mold, and there is no need to stop work and production when taking and placing the wax mold, so the work efficiency is high.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A shell making machine for lost wax casting, characterized in that: The invention comprises a circulating conveying line (1) and a first slurry dipping assembly (2) and a sand sprinkling mechanism (3) which are sequentially arranged along the conveying direction of the circulating conveying line (1); the bottom surface of the moving part of the circulating conveying line (1) is fixedly connected with a uniformly distributed suspension assembly (4); the suspension assembly (4) comprises a fixed rod (401) which moves synchronously with the moving part in the circulating conveying line (1); the bottom end of the fixed rod (401) is rotatably connected to a vertically telescopic telescopic part (403); the bottom end of the telescopic part (403) is detachably connected to a hanger (404); the first slurry dipping assembly (2) comprises a slurry dipping bucket (21) and a lifting power device (22) for driving the telescopic part to rise and fall; the slurry dipping bucket (21) is correspondingly arranged below the hanger (404).

2. A shell making machine for lost wax casting according to claim 1, characterized in that: The telescopic member (403) includes a connecting portion and a telescopic portion arranged in an upper and lower manner, the connecting portion includes an upper turntable (4031), a central hole adapted to the structure of the fixed rod (401) is provided in the middle of the upper turntable (4031), and the upper turntable (4031) is overlapped on the tray (402) at the bottom end of the fixed rod (401), the bottom surface of the upper turntable (4031) is fixedly connected with a connecting tube (4032) located at the periphery of the tray (402), the telescopic portion includes a lower turntable (4033), a spring (4034) is fixedly connected between the lower turntable (4033) and the upper turntable (4031), the top surface of the lower turntable (4033) is fixedly connected with an insertion rod (4036) arranged in a one-to-one correspondence with the connecting tube (4032), and a convex ring (4035) arranged along its circumferential direction is provided on the curved surface of the lower turntable (4033).

3. A shell making machine for lost wax casting according to claim 2, characterized in that: The lifting power device (22) comprises a power box (221), wherein a screw rod is arranged along its height direction in the power box (221), and a vertical through slot (222) corresponding to the screw rod is arranged on the side wall of the power box (221), the top end of the screw rod is connected to a rotating motor (223), and the nut seat on the screw rod is fixedly connected to a lifting seat (224) located in the vertical through slot (222), and a first cylinder (225) arranged horizontally is arranged on the lifting seat (224), and a pressure block (226) corresponding to the convex ring (4035) is fixedly connected to the output end of the first cylinder (225).

4. A shell making machine for lost wax casting according to claim 3, characterized in that: The sling (404) includes an integrally connected horizontal plug block (4041) and a threaded rod (4042), wherein the horizontal plug block (4041) is adapted to a plug hole structure horizontally arranged on the bottom surface of the lower turntable (4033), and a rubber layer is provided on the outer wall of the horizontal plug block (4041), and a wax mold cover plate (4043) is fixedly connected to the threaded rod (4042), and two symmetrically arranged plug holes (4044) are provided on the curved surface of the wax mold cover plate (4043).

5. A shell making machine for lost wax casting according to claim 4, characterized in that: The sand shower mechanism (3) comprises a lifting drive assembly (31) and a sand shower assembly (32), wherein the lifting drive assembly (31) has the same structure as the lifting power device (22), and the sand shower assembly (32) comprises a sand shower bucket (321), wherein the top surface of the sand shower bucket (321) is provided with a first semicircular top plate (322) and a second semicircular top plate (323) which are arranged in a mirror-symmetrical manner, wherein the first semicircular top plate (322) and the second semicircular top plate (323) are ) are provided with uniformly distributed teeth (324) on the curved side walls, and semicircular through grooves (325) are provided on the end surfaces of the first semicircular top plate (322) and the second semicircular top plate (323) close to each other. The two semicircular through grooves (325) are matched with the structure of the wax mold cover plate (4043) after being spliced ​​together, and the semicircular through grooves (325) are provided with plug posts (326) matched with the plug hole (4044) structure. The top surfaces of the plate (322) and the second semicircular top plate (323) are both provided with a semi-annular groove (327), the two semi-annular grooves (327) are connected end to end, and a slider (328) adapted to the structure thereof is provided in each of the two semi-annular grooves (327), and the two sliders (328) are respectively connected to a push-pull power device, and the push-pull directions of the two push-pull power devices are located on the same straight line, and a mounting seat (3212) is provided on the side wall of the sand-drenching bucket (321), and a vertically arranged lifting cylinder (3213) is fixedly connected to the mounting seat (3212), and the output end of the lifting cylinder (3213) is fixedly connected to the lifting plate (3214), and a rotary drive motor (3215) is fixedly connected to the lifting plate (3214), and the output shaft of the rotary drive motor (3215) is connected to a drive gear (3216), and the drive gear (3216) is adapted to the tooth (324) structure; The sand shower bucket (321) comprises a sand shower portion (32101) and a sand receiving portion (32102) which are detachably connected to each other. At least two rows of sandblasting heads are arranged on the curved inner wall of the sand shower portion (32101), and each row of sandblasting heads is evenly distributed along the height direction of the sand shower portion (32101). A movable wheel is arranged on the bottom plate of the sand receiving portion (32102), and the mounting seat (3212) is fixedly connected to the curved outer wall of the sand shower portion (32101).

6. A shell making machine for lost wax casting according to claim 5, characterized in that: The inclination angles of the sandblasting heads in each row are different, wherein the sandblasting heads in two rows are arranged to be inclined downward and inclined upward respectively, and each of the sandblasting heads is connected to the sand storage bin (3217) through a conveying pipe.

7. A shell making machine for lost wax casting according to claim 6, characterized in that: The push-pull power device comprises a support seat (329), the support seat (329) is fixedly connected to the sand shower portion (32101), a push-pull cylinder (3210) is provided on the top surface of the support seat (329), and a telescopic rod of the push-pull cylinder (3210) is fixedly connected to the slider (328) via a bent rod (3211).

8. A shell making machine for lost wax casting according to claim 1, characterized in that: A roller is provided at the bottom of the dipping barrel (21), a perspective window (5) is provided on the side wall of the dipping barrel (21) along its height direction, and a scale line is provided on the perspective window (5) along its height direction.

9. A shell making machine for lost wax casting according to claim 1, characterized in that: The moving part is an annular toothed belt. The circulating conveyor line (1) comprises an annular track (101) which is suspended, the annular toothed belt and a driving gear (102). The annular toothed belt is located in the annular track (101) and is compatible with the structure of the annular track (101). A clearance hole is provided on the top surface of the annular track (101). The driving gear (102) is provided in the clearance hole. The driving gear (102) is meshedly connected with the annular toothed belt. The driving gear (102) is connected to the output end of a conveying motor (103). The bottom surface of the annular track (101) is provided with an annular through groove for the fixing rod (401) to pass through.

10. A shell making machine for lost wax casting according to claim 1, characterized in that: The circulating conveying line (1) is also provided with a second slurry dipping assembly, which is located on a side of the sand sprinkling mechanism (3) away from the first slurry dipping assembly (2), and the second slurry dipping assembly has the same structure as the first slurry dipping assembly (2).

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