A lost wax casting steam dewaxing system

Abstract

The present invention provides a steam dewaxing system for investment casting, comprising: a basket; a track, which is arranged in a cyclic manner; a loading mechanism for carrying the basket loaded with the modules to be dewaxed; a dewaxing kettle, which is of a through-type structure; a feeding translation mechanism for transferring the basket on the loading mechanism into the dewaxing kettle; a discharging mechanism for carrying the basket after dewaxing is completed; a discharging translation mechanism for transferring the basket from the dewaxing kettle to the discharging mechanism; and an empty basket translation mechanism for transferring the basket on the discharging mechanism to the loading mechanism through a third moving platform. The present invention is mainly applicable to the dewaxing process of investment casting. Different from the inefficient dewaxing production mode of the traditional single-machine dewaxing kettle, the present invention is a through-type cyclic continuous production line with a cyclic basket-returning production mode, which greatly reduces the labor intensity of workers. It can allow multiple baskets to enter and exit the dewaxing kettle simultaneously, and has the advantages of convenient loading and unloading, high degree of operation automation, high dewaxing efficiency and high energy consumption utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of investment casting, and particularly to an investment casting steam dewaxing system. Background Art

[0002] Steam dewaxing is one of the main methods for dewaxing the modules in the investment casting industry. The steam dewaxing kettle is a traditional steam dewaxing device. After the modules are loaded into the basket, the push cart is used to send them into the dewaxing kettle. The operator closes the door of the dewaxing kettle manually, opens the steam inlet valve, and introduces the steam with a set pressure generated by the electric heating of the steam chamber of the device into the dewaxing chamber. After reaching the set dewaxing time, the steam inlet valve is closed, the exhaust valve of the dewaxing chamber is opened. After the steam is exhausted, the operator opens the door of the dewaxing kettle and pulls out the basket, and uses the push cart to pick it up, completing the dewaxing process. This device can only dewax a single basket of modules each time, and has a single door for entry and a single door for exit, and the upper and lower baskets cannot be processed simultaneously, resulting in low operation efficiency. Each time a basket is dewaxed, steam is discharged once, resulting in low energy consumption efficiency; the opening and closing of the kettle door and the entry and exit of the basket all rely on manual operation, resulting in high labor intensity for employees; and the dewaxing capacity is relatively small. Summary of the Invention

[0003] In view of this, the present invention provides an investment casting steam dewaxing system to solve the problems of high manual labor intensity, low operation efficiency and low energy consumption efficiency existing in the traditional single machine dewaxing kettle in the prior art.

[0004] The technical solution of the present invention is realized as follows: The present invention provides an investment casting steam dewaxing system, including:

[0005] A basket for loading modules;

[0006] A track, which is circularly arranged;

[0007] A loading mechanism, slidably arranged on the track, for carrying the basket loaded with the modules to be dewaxed;

[0008] A dewaxing kettle, which is a through-type structure, arranged on the track, for performing dewaxing operations on the modules to be dewaxed;

[0009] A feeding translation mechanism, arranged on the track between the loading mechanism and the dewaxing kettle, including a first moving platform that moves linearly along the track, and a first transfer device is arranged on the first moving platform. The first transfer device is used to transfer the basket on the loading mechanism to the first moving platform multiple times and push it into the dewaxing kettle;

[0010] An unloading mechanism, slidably arranged on the track, for carrying the basket after dewaxing is completed;

[0011] The discharging translation mechanism is arranged on the track between the dewaxing kettle and the blanking mechanism, and includes a second moving platform that moves linearly along the track. The second moving platform is used to carry a plurality of material baskets from the dewaxing kettle. A second transfer device is arranged on the discharging platform, and the second transfer device is used to sequentially transfer the plurality of material baskets on the second moving platform to the blanking mechanism;

[0012] The empty basket translation mechanism is arranged on the track between the blanking mechanism and the feeding mechanism, and includes a third moving platform that moves linearly along the track. A third transfer device is arranged on the third moving platform, and the third transfer device is used to transfer the material basket on the discharging mechanism to the feeding mechanism through the third moving platform.

[0013] On the basis of the above technical solution, preferably, the feeding mechanism and the blanking mechanism have the same structure. Among them, the feeding mechanism includes a first bearing frame for carrying a single material basket. The bottom of the first bearing frame is provided with first walking wheels that roll along the track. A first driving motor for driving the first walking wheels to rotate is arranged on the first bearing frame. A plurality of first roller bearings for the material basket to slide are respectively arranged on both sides of the top of the first bearing frame along the track traveling direction.

[0014] On the basis of the above technical solution, preferably, the first moving platform, the second moving platform and the third moving platform have the same structure. Among them, the first moving platform includes a second bearing frame for carrying at least two material baskets. The bottom of the second bearing frame is provided with second walking wheels that roll along the track. A second driving motor for driving the second walking wheels to rotate is arranged on the second bearing frame. The top surface of the second bearing frame is flush with the top surface of the first bearing frame, and a plurality of second roller bearings for the material basket to slide are respectively arranged on both sides of the top of the second bearing frame along the track traveling direction.

[0015] On the basis of the above technical solution, preferably, the first transfer device, the second transfer device and the third transfer device have the same structure. Among them, the first transfer device includes a transfer frame. The transfer frame is arranged in the second bearing frame. The bottom of the transfer frame is rotatably provided with third walking wheels. A slide rail that is in rolling connection with the third walking wheels is arranged in the second bearing frame. The running direction of the slide rail is the same as the running direction of the track. A straight rack that is the same as the running direction of the slide rail is also arranged in the second bearing frame. A third driving motor is arranged in the transfer frame. The output shaft of the third driving motor is in meshing transmission with the straight rack through a gear. The first transfer device further includes a traction device. The traction device is arranged on the top of the transfer frame and is used to pull the material basket.

[0016] On the basis of the above technical solution, preferably, the traction device includes an extension frame, a first push-pull assembly and a second push-pull assembly. The extension frame is fixedly arranged on the transfer frame, and the direction of the extension frame is toward the loading mechanism. The first push-pull assembly is fixedly arranged on the top surface of the transfer frame, and the second push-pull assembly is fixedly arranged on the top surface of the end of the extension frame. The first push-pull assembly and the second push-pull assembly have the same structure, wherein the first push-pull assembly includes a fixed seat and a rotating member, and the fixed seat is fixedly installed at the corner of the top surface of the transfer frame. The longitudinal section of the rotating member is trapezoidal, the upper end of the rotating member has a first force-bearing surface, and the lower end of the rotating member has a second force-bearing surface. The rotating member is hinged to the fixed seat, and the distance from the hinge point of the rotating member and the fixed seat to the second force-bearing surface is greater than the distance from the hinge point of the rotating member and the fixed seat to the first force-bearing surface.

[0017] On the basis of the above technical solution, preferably, the outer bottom surface of the material basket is provided with a plurality of stoppers that abut against the first force-bearing surface of the rotating member.

[0018] On the basis of the above technical solution, preferably, the dewaxing kettle includes a kettle body and a heating device connected to the kettle body, the kettle body is a cylindrical structure with openings at both ends, kettle doors are respectively provided at both ends of the kettle body, and a conveying rail connected to the track is provided in the kettle body, the top surface of the conveying rail is flush with the top surface of the second carrier frame, and a plurality of third roller bearings for sliding of the material basket are provided on the top surface of the conveying rail along the direction of travel.

[0019] On the basis of the above technical solution, preferably, the heating device includes a steam inlet pipe and a steam exhaust pipe respectively connected to the kettle body, the steam inlet pipe is connected to a steam inlet regulating valve, and the exhaust pipe is connected to a steam outlet regulating valve. The kettle body is also provided with a temperature sensor for detecting the internal temperature of the kettle body, and a pressure sensor for detecting the internal pressure of the kettle body.

[0020] Furthermore, preferably, a wax-water collecting chamber is provided at the inner bottom of the kettle body, a wax discharge pipe connected to the wax-water collecting chamber is provided on the outer wall of the kettle body, and a solenoid valve is provided on the wax discharge pipe.

[0021] On the basis of the above technical solution, preferably, it also includes an electrical control system, which includes a master station control cabinet and multiple slave station control cabinets. The master station control cabinet is connected to the loading mechanism and the feeding translation mechanism, and each slave station control cabinet is respectively connected to the dewaxing kettle, the unloading mechanism, the discharging translation mechanism and the empty basket translation mechanism. The master station control cabinet and each slave station control cabinet are connected to each other through wireless communication.

[0022] The present invention has the following beneficial effects compared to the prior art:

[0023] The investment casting steam dewaxing system disclosed by the present invention is provided with a loading mechanism, a feeding translation mechanism, a dewaxing kettle, a blanking mechanism, an unloading translation mechanism and an empty basket translation mechanism on a circulating track respectively. The operator assembles the molds into baskets on the loading mechanism, and the feeding translation mechanism transfers a plurality of baskets to the first moving platform in sequence through a first rotating device. After a predetermined number of baskets are loaded on the first moving platform, the first rotating device pushes all the baskets with the predetermined number into the dewaxing kettle for centralized dewaxing. The temperature and pressure of the dewaxing kettle are monitored to achieve precise control of the heating for dewaxing. After the dewaxing of the baskets is completed, they are pushed out of the dewaxing kettle and moved onto the unloading translation mechanism. The second rotating device transfers the baskets with the predetermined number on the second moving platform to the blanking mechanism one by one. The operator unloads the molds through the blanking mechanism. After the blanking is completed, the baskets are transferred to the loading mechanism one by one through the third moving platform on the empty basket translation mechanism under the transfer of the third transfer device for circular operation. The present invention is mainly applicable to the dewaxing process of investment casting. Different from the inefficient dewaxing production method of the traditional single machine dewaxing kettle, the present invention is a through-type circulating continuous production line with a circulating basket-returning production mode, which greatly reduces the labor intensity of workers. It can have multiple baskets enter and exit the dewaxing kettle simultaneously, and has the advantages of convenient loading and unloading, high degree of operation automation, high dewaxing efficiency and high energy consumption utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a partial front view of the investment casting steam dewaxing system disclosed by the present invention;

[0026] Figure 2 It is a schematic plan view of the investment casting steam dewaxing system disclosed by the present invention;

[0027] Figure 3 It is a schematic plan view of the loading mechanism disclosed by the present invention;

[0028] Figure 4 It is a schematic plan view of the assembly of the first moving platform and the first transfer device disclosed by the present invention;

[0029] Figure 5 It is a schematic side view of the assembly of the first moving platform and the first transfer device disclosed by the present invention;

[0030] Figure 6 It is a front view of the first transfer device disclosed by the present invention;

[0031] Figure 7 Top view of the first transfer device disclosed by the present invention;

[0032] Figure 8 Side schematic view of the first transfer device disclosed by the present invention;

[0033] Figure 9 Front view of the dewaxing kettle disclosed by the present invention;

[0034] Figure 10 Side view of the dewaxing kettle disclosed by the present invention. Specific embodiments

[0035] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] As Figure 1 shown, in combination with Figure 2 , an embodiment of the present invention discloses an investment casting steam dewaxing system, which is suitable for the dewaxing production process in the investment casting industry. The system includes a basket 100, a track 1, a loading mechanism 2, a dewaxing kettle 3, a feeding translation mechanism 4, a discharging mechanism 5, a discharging translation mechanism 6, and an empty basket translation mechanism 7.

[0037] Among them, the basket 100 is used to load the mold assembly 200. Preferably, the basket 100 has a square trough-like structure.

[0038] The track 1 is arranged in a circular manner and laid on the production line to form a closed loop.

[0039] The loading mechanism 2 is arranged on the track 1 and can move along the track 1. The loading mechanism 2 is used to place the basket 100 and at the same time facilitate the operator to load the mold assembly 200 to be dewaxed into the basket 100.

[0040] The dewaxing kettle 3 has a through structure and is fixedly connected in series on the track 1. The dewaxing kettle 3 and the track 1 form a closed loop, that is, the basket 100 can enter through one end of the dewaxing kettle 3 on the track 1 and exit from the other end of the dewaxing kettle 3, so that the mold assembly 200 in the basket 100 performs dewaxing operations in the dewaxing kettle 3.

[0041] The feeding translation mechanism 4 is arranged on the track 1 where the feeding mechanism 2 and the dewaxing kettle 3 are located, and includes a first moving platform 41 that moves linearly along the track 1. A first transfer device 42 is arranged on the first moving platform 41. The first transfer device 42 is used to transfer the material basket 100 on the feeding mechanism 2 to the first moving platform 41 multiple times and push it into the dewaxing kettle 3.

[0042] The discharging mechanism 5 is arranged on the track 1 at the outlet end of the dewaxing kettle 3 and can move along the track 1. The discharging mechanism 5 is used to carry the material basket 100 that has completed the dewaxing operation in the dewaxing kettle 3, and at the same time facilitate the operator to unload the dewaxed module 200 from the material basket 100 on the discharging mechanism 5.

[0043] The discharging translation mechanism 6 is arranged on the track 1 between the dewaxing kettle 3 and the discharging mechanism 5, and includes a second moving platform 61 that moves linearly along the track 1. The second moving platform 61 is used to carry multiple material baskets 100 from the dewaxing kettle 3. A second transfer device 62 is arranged on the discharging platform. The second transfer device 62 is used to transfer the multiple material baskets 100 on the second moving platform 61 to the discharging mechanism 5 in sequence.

[0044] The empty basket translation mechanism 7 is arranged on the track 1 between the discharging mechanism 5 and the feeding mechanism 2, and includes a third moving platform 71 that moves linearly along the track 1. A third transfer device 72 is arranged on the third moving platform 71. The third transfer device 72 is used to transfer the material basket 100 on the discharging mechanism to the feeding mechanism 2 through the third moving platform 71.

[0045] With the above technical solution, the operator loads the module 200 into the basket on the loading mechanism 2. The feeding translation mechanism 4 transfers multiple baskets 100 to the first moving platform 41 in sequence through the first rotating device. After a predetermined number of baskets 100 are loaded on the first moving platform 41, the first transfer device 42 pushes all the predetermined number of baskets 100 into the dewaxing kettle 3 for centralized dewaxing. The temperature and pressure of the dewaxing kettle 3 are monitored to achieve precise control of the heating during dewaxing. After the dewaxing of the basket 100 is completed, it is pushed out of the dewaxing kettle 3 and moved onto the discharging translation mechanism 6. The second transfer device 62 transfers the predetermined number of baskets 100 on the second moving platform 61 to the unloading mechanism 5 one by one. The operator unloads the module 200 through the unloading mechanism 5. The unloaded basket 100 is transferred to the loading mechanism 2 one by one through the third moving platform 71 on the empty basket translation mechanism 7 under the transfer of the third transfer device 72 for cyclic operation. The present invention is mainly applicable to the dewaxing process of investment casting. Different from the inefficient dewaxing production method of traditional single-machine dewaxing kettles, the present invention is a through-type cyclic continuous production line with a cyclic basket-returning production mode, which greatly reduces the labor intensity of workers. Multiple baskets can enter and exit the dewaxing kettle 3 simultaneously, and it has the advantages of convenient loading and unloading, high degree of operation automation, high dewaxing efficiency, and high energy consumption utilization rate.

[0046] The present invention is further realized through the following specific technical solutions.

[0047] Refer to the attached Figure 3 As shown in the figure, the loading mechanism 2 and the unloading mechanism 5 in the embodiment of the present invention have the same structure. Here, only the loading mechanism 2 is specifically described. The unloading mechanism 5 refers to the loading mechanism 2 and will not be specifically described here. The loading mechanism 2 includes a first carrier 21 for carrying a single basket 100, which facilitates the first transfer device 42 to transfer the basket 100 on the first carrier 21 to the first moving platform 41 in multiple cycles during the docking process between the feeding translation mechanism 4 and the loading mechanism 2. If there are multiple workstations for placing the baskets 100 on the loading mechanism 2, it will cause the first transfer device 42 to be unable to transfer the subsequent baskets 100 on the first carrier 21. Therefore, in the embodiment of the present invention, a single-station design is adopted for the loading mechanism 2. The unloading mechanism 5 is also designed as a single station to facilitate receiving the baskets 100 from the discharging translation mechanism 6 one by one. After the module 200 is unloaded, the basket 100 can be quickly transmitted to the empty basket translation mechanism 7, and the empty basket translation mechanism 7 transmits the basket 100 to the loading mechanism 2 in sequence for cyclic operation, which can greatly improve the loading and unloading efficiency and the cyclic utilization rate of the basket 100.

[0048] A first carrier 21 is provided with first traveling wheels 22 that roll along a track 1 at the bottom. A first driving motor 23 for driving the first traveling wheels 22 to rotate is provided on the first carrier 21. A plurality of first roller bearings 24 for the sliding of a basket 100 are respectively provided on both sides of the top of the first carrier 21 along the traveling direction of the track 1. In a specific implementation process, the first traveling wheels 22 are connected by a rotating shaft, and a rotating gear disk is fixedly connected to the rotating shaft. The first driving motor 23 drives the rotating gear disk to rotate, thereby driving the first traveling wheels 22 to rotate. The driving of the first traveling wheels 22 by the first driving motor 23 belongs to the prior art. By respectively providing a plurality of first roller bearings 24 on both sides of the top of the first carrier 21, it is convenient for the basket 100 to roll along the first roller bearings 24 during the transfer process.

[0049] Refer to the attached Figure 4 As shown, the first moving platform 41, the second moving platform 61, and the third moving platform 71 in the embodiments of the present invention have the same structure. Here, only the first moving platform 41 will be specifically described. The second moving platform 61 and the third moving platform 71 refer to the first moving platform 41 and will not be specifically elaborated here.

[0050] The first moving platform 41 includes a second carrier 411. The length of the second carrier 411 is greater than the length of the first carrier 21, and the second carrier 411 is a rigid structure and can only move linearly along the track 1. In order to enable multiple baskets 100 to enter the dewaxing kettle 3 at one time and improve the dewaxing efficiency, the second carrier 411 can carry at least two baskets 100. Preferably, in this embodiment, the second carrier 411 can carry four baskets 100. The second carrier 411 is provided with second traveling wheels 412 that roll along the track 1 at the bottom. A second driving motor 413 for driving the second traveling wheels 412 to rotate is provided on the second carrier 411. The driving of the second traveling wheels 412 by the second driving motor 413 also belongs to the prior art. The top surface of the second carrier 411 is flush with the top surface of the first carrier 21, and a plurality of second roller bearings 414 for the sliding of the basket 100 are respectively provided on both sides of the top of the second carrier 411 along the traveling direction of the track 1. Thus, when the second carrier 411 is docked with the first carrier 21, the basket 100 slides from the first carrier 21 onto the second carrier 411 through the first roller bearings 24 and can slide easily on the second carrier 411 by means of the second roller bearings 414.

[0051] The first transfer device 42, the second transfer device 62, and the third transfer device 72 in the embodiments of the present invention have the same structure. Here, only the first transfer device 42 will be specifically described. The second transfer device 62 and the third transfer device 72 refer to the first transfer device 42 and will not be specifically elaborated here.

[0052] Refer to the attachedFigures 5 - 8 As shown in the figure, the first transfer device 42 includes a transfer frame 421. The transfer frame 421 is arranged inside the second carrier frame 411. A third traveling wheel 422 is rotatably arranged at the bottom of the transfer frame 421. Two slide rails 423 that are in rolling connection with the third traveling wheel 422 are arranged inside the second carrier frame 411. There are two slide rails 423 and four third traveling wheels 422, which can ensure the stable operation of the transfer frame 421 inside the second carrier frame 411. The four third traveling wheels 422 are in rolling connection with the two slide rails 423, and the running direction of the slide rails 423 is the same as the running direction of the track 1. A straight rack 424 in the same running direction as the slide rails 423 is also arranged inside the second carrier frame 411. The straight rack 424 is fixed inside the second carrier frame 411. A third driving motor 425 is arranged inside the transfer frame 421. The output shaft of the third driving motor 425 is in meshing transmission with the straight rack 424 through a gear 426. With such a structural arrangement, the third driving motor 425 drives the gear 426 to rotate along the straight rack 424, thereby driving the third traveling wheel 422 to move along the slide rail 423. The first transfer device 42 further includes a traction device 43. The traction device 43 is arranged on the top of the transfer frame 421 and is used to pull the material basket 100.

[0053] Specifically, the first transfer device 42 moves linearly inside the first moving platform 41, and its purpose is to drive the traction device 43 to move linearly. After the second carrier frame 411 is docked with the first carrier frame 21, the second transfer device 62 moves linearly inside the second carrier frame 411, thereby driving the traction device 43 to pull the material basket 100 on the first carrier frame 21 onto the second carrier frame 411, thus completing the transfer work.

[0054] The traction device 43 includes an extension frame 431, a first push-pull assembly 432, and a second push-pull assembly 433. The extension frame 431 is fixedly arranged on the transfer frame 421, and the direction of the extension frame 431 faces the feeding mechanism 2. The first push-pull assembly 432 is fixedly arranged on the top surface of the transfer frame 421, and the second push-pull assembly 433 is fixedly arranged on the top surface of the end of the extension frame 431. The structures of the first push-pull assembly 432 and the second push-pull assembly 433 are the same. Only the first push-pull assembly 432 will be described here, and the second push-pull assembly 433 can be referred to the first push-pull assembly 432 and will not be elaborated here.

[0055] The first push-pull assembly 432 includes a fixed seat 4321 and a rotating member 4320. The fixed seat 4321 is fixedly installed at the corner of the top surface of the transfer rack 421. The longitudinal section of the rotating member 4320 is trapezoidal. The upper end of the rotating member 4320 has a first stress surface 4322, and the lower end of the rotating member 4320 has a second stress surface 4323. Specifically, the rotating member 4320 is hinged to the fixed seat 4321, and the distance from the hinge point between the rotating member 4320 and the fixed seat 4321 to the second stress surface 4323 is greater than the distance from the hinge point between the rotating member 4320 and the fixed seat 4321 to the first stress surface 4322. Thus, in the initial state, due to its own gravity, the upper end of the rotating member 4320 tilts up, the lower end of the rotating member 4320 lands on the fixed seat 4321, and the second stress surface 4323 adheres to the fixed seat 4321. When it is necessary to transfer the basket 100 on the first carrier 21 to the second carrier 411, first, the second carrier 411 moves linearly and docks with the first carrier 21. The transfer rack 421 moves in the second carrier 411 towards the first carrier 21, and the extension rack 431 on the transfer rack 421 extends into the first carrier 21. During the process of the extension rack 431 extending into the first carrier 21, the rotating member 4320 on the second push-pull assembly 433 is blocked by the blocking object at the bottom of the basket 100 on the first carrier 21, and the rotating member 4320 will rotate counterclockwise around the hinge point on the fixed seat 4321. When the rotating member 4320 completely passes over the blocking object at the bottom of the basket 100, due to its own weight, the rotating member 4320 resets. The transfer rack 421 moves on the second carrier 411 in a direction away from the first carrier 21. At this time, the first stress surface 4322 on the rotating member 4320 abuts against the blocking object at the bottom of the basket 100, and the second stress surface 4323 abuts against the fixed seat 4321 at this time. Thus, the transfer rack 421 drives the basket 100 to move during the movement process, so as to move the basket 100 to the second carrier 411. When the first transfer device 42 is transferring the second basket 100, the first push-pull assembly 432 is just below the previous basket 100. At this time, the previous basket 100 can be moved in a direction away from the first carrier 21 on the second carrier 411 through the first push-pull assembly 432, so as to complete the transfer of multiple baskets 100 from the feeding mechanism 2 to the feeding translation mechanism 4 in a cycle.

[0056] To facilitate the rotating member 4320 to pull the basket 100, in the embodiment of the present invention, a plurality of stoppers 101 that abut against the first stress surface 4322 of the rotating member 4320 are provided on the bottom surface of the basket 100, and the position distribution of these stoppers 101 corresponds to the first push-pull assembly 432 and the second push-pull assembly 433.

[0057] Refer to the attached Figure 9 and 10As shown, in this embodiment, the dewaxing kettle 3 includes a kettle body 31 and a heating device 32 connected to the kettle body 31. The kettle body 31 is a cylindrical structure with two ends open. The two ends of the kettle body 31 are respectively provided with kettle doors 33. Preferably, the kettle doors 33 are driven by hydraulic cylinders to open and close with the kettle body 31. A conveying rail 34 connected to the track 1 is provided in the kettle body 31. The top surface of the conveying rail 34 is flush with the top surface of the second carrier 411, and a plurality of third roller bearings 35 for the sliding of the material basket 100 are provided on the top surface of the conveying rail 34 along the travel direction. With this structural arrangement, when the first movable platform 41 of the feed translation mechanism 4 is fully loaded with a predetermined number of baskets 100, the second carrier 411 of the first movable platform 41 moves to the feed inlet of the dewaxing kettle 3. The second carrier 411 docks with the conveyor rail 34, and the first transfer device 42 of the feed translation mechanism 4 pushes the baskets 100 at a time, pushing them along the third roller bearing 35 onto the conveyor rail 34. After the predetermined number of baskets 100 enter the dewaxing kettle 3, the kettle doors 33 at both ends of the kettle body 31 close, and the heating device 32 allows the dewaxing operation of the modules 200 within the kettle body 31 to proceed. During the operation of the dewaxing kettle 3, the feeding translation mechanism 4 performs a secondary transfer of the material basket 100 from the loading mechanism 2 to complete the second round of transfer of the material basket 100. After the module 200 in the dewaxing kettle 3 completes the dewaxing operation, the kettle door 33 is opened, and the discharging translation mechanism 6 moves to the discharging end of the kettle body 31. The feeding translation mechanism 4 pushes the second round of material baskets 100 to be dewaxed into the dewaxing kettle 3, and then the multiple material baskets 100 in the dewaxing kettle 3 in the first round are all pushed to the discharging translation mechanism 6, and the cycle is carried out in sequence.

[0058] The heating device 32 includes a steam inlet pipe 321 and a steam exhaust pipe 322, each connected to the kettle body 31. The steam inlet pipe 321 is connected to a steam inlet regulating valve 323, and the steam exhaust pipe 322 is connected to a steam outlet regulating valve 324. The kettle body 31 is also provided with a temperature sensor 325 for detecting the internal temperature of the kettle body 31, and a pressure sensor 326 for detecting the internal pressure of the kettle body 31. A wax-water collection chamber 311 is also provided at the bottom of the kettle body 31. A wax exhaust pipe 312 is provided on the outer wall of the kettle body 31, connected to the wax-water collection chamber 311. A solenoid valve 313 is installed on the wax exhaust pipe 312.

[0059] The dewaxing process of the kettle body 31 is divided into four stages by the heating device 32 .

[0060] The first stage: rapid heating to the preset T1;

[0061] First, adjust the opening degree K1 of the steam inlet control valve 323 and set K1 to 100%. High-temperature steam enters the interior of the kettle body 31 through the steam inlet pipe 321. At this time, adjust the opening degree K2 of the steam outlet control valve 324 and set K2 to a%. The cold air inside the kettle body 31 is discharged through the exhaust pipe 322. When the temperature sensor 325 detects that the temperature inside the kettle body 31 reaches the preset temperature T1, adjust the opening degree K2 of the steam outlet control valve 324 and set K2 to 0%.

[0062] This stage ensures rapid temperature rise, avoids wax liquid expansion during the heating process, and the module 200 does not crack.

[0063] Second stage: Boost the pressure to P1 and maintain the pressure, raise the temperature to T2 and keep it warm;

[0064] Keep the opening degree K1 of the steam inlet control valve 323 at 100% and the opening degree K2 of the steam outlet control valve 324 at 0%. Until the pressure sensor 326 detects that the pressure inside the kettle body 31 reaches the preset pressure P1, set the opening degree K1 of the steam inlet control valve 323 to b% to maintain the pressure P1 in the heating chamber. When the temperature sensor 325 detects that the temperature inside the kettle body 31 reaches the preset temperature T2, start the pressure-holding timing for the preset t1 until t1 arrives;

[0065] This stage ensures continuous melting of the wax liquid and thorough dewaxing.

[0066] Third stage: Natural cooling;

[0067] When the timing time t1 arrives, set the opening degree K1 of the steam inlet control valve 323 to 0% and the opening degree K2 of the steam outlet control valve 324 to 0%; Enter the preset natural cooling timing t2 until t2 arrives;

[0068] This stage makes full use of the peak steam heat during the natural temperature and pressure reduction process to continuously dewax.

[0069] Fourth stage: Exhaust steam and drain wax;

[0070] When the timing time t2 arrives, set the opening degree K1 of the steam inlet control valve 323 to 0% and the opening degree K2 of the steam outlet control valve 324 to 100%; Start exhausting steam to quickly reduce the pressure and temperature; Until the pressure sensor 326 detects that the pressure inside the kettle body 31 is lower than the door-opening safety pressure P2, the wax water collection chamber 311 at the bottom of the kettle body 31 is used to collect wax water. The preset wax draining time is t3. When the t3 timing arrives, the solenoid valve 313 is opened, and the wax water is discharged from the wax water collection chamber 311 through the wax draining pipe 312 to complete the wax draining operation;

[0071] The dewaxing process is completed by the above four steps, and the wax water is recovered and recycled.

[0072] The temperature, pressure, time, steam inlet regulating valve 323, steam outlet regulating valve 324, solenoid valve 313, etc. inside the kettle body 31 are controlled by a PLC analog module and touch screen parameter settings for automatic PID control to achieve the stability of the dewaxing heating process.

[0073] The embodiment of the present invention further includes an electrical control system. The electrical control system includes a master station control cabinet and multiple slave station control cabinets. The master station control cabinet is connected to the feeding mechanism and the feeding translation mechanism. Each slave station control cabinet is respectively connected to the dewaxing kettle, the discharging mechanism, the discharging translation mechanism, and the empty basket translation mechanism. The master station control cabinet and each slave station control cabinet are connected by wireless communication. Since the area of the dewaxing production line is relatively large, if a single master station control cabinet is used to control the electrical components of each mechanism, it will cause the cable wires to be broken when the above mechanisms move on the track. Therefore, multiple slave station control cabinets are used to connect the mechanisms with a large moving stroke, such as the discharging mechanism, the discharging translation mechanism, and the empty basket translation mechanism. When designing, a wireless communication module is used to replace the 485 communication cable, and a sliding contact line and a current collector are designed on the track for three-phase 380V power transmission; the stability of the automatic operation process is improved, and the failure rate is reduced. In the embodiment of the present invention, the sliding contact line power supply method adopted by the electrical control system uses the existing technology.

[0074] The operation of this system is described as follows:

[0075] (1) Set the states of the operation buttons of the master station control cabinet and the 4 slave station control cabinets to the "automatic" mode, and press the "automatic operation" button. The automatic status indicator light will be on.

[0076] (2) The feeding mechanism 2 retracts to the in-place position, receives the empty material basket 100 on the empty basket translation mechanism 7, the feeding mechanism 2 automatically advances to the in-place position. After the worker loads the module onto the empty basket, press the "material confirmation" button on the slave station control cabinet. The first transfer device 42 in the feeding translation mechanism 4 automatically transfers the material basket 100 to the first moving platform 41. The feeding mechanism 2 automatically retracts to the in-place position, and repeat the above process until the feeding and transfer of 4 baskets of modules are completed on the feeding translation mechanism 4;

[0077] (3) When 4 material baskets 100 are full on the feeding translation mechanism 4 and there is no material basket 100 on the discharging translation mechanism, and both translation machines are far away from the kettle door 33 of the dewaxing kettle 3. After the products in the kettle body 31 are dewaxed (the yellow alarm light is always on), the out-of-furnace operation can be carried out. Press the "out-of-furnace start" button, and the kettle door will open automatically.

[0078] After the kettle door 33 of the dewaxing kettle 3 is fully opened, the feeding translation mechanism 4 automatically advances to the in-place position. After the discharging translation mechanism 6 has no material, it automatically retreats to the in-place position. The first transfer device sends 4 baskets into the kettle. After the feeding translation mechanism 4 has no material, it automatically retreats to the in-place position (waiting for the feeding mechanism 2 to confirm the availability of materials); the modules that have completed dewaxing in the kettle body 31 are pushed to the discharging translation mechanism 6. After the discharging translation mechanism 6 has 4 baskets with materials in place, it automatically advances to the in-place position.

[0079] (5) The worker checks whether there is any foreign object remaining in the kettle door area at the front and rear kettle doors 33. After the inspection is completed, the worker can press the "Start" button on the slave control cabinet at the dewaxing kettle 3, and the kettle door 33 automatically closes and starts to execute the heating program (ensure that the time of this process ≤ 30 seconds).

[0080] (6) The discharging translation mechanism 6 advances to the in-place position, automatically transfers the material basket 100 to the blanking mechanism 5. The worker unloads the modules in the material basket 100 on the blanking mechanism 5 to the next process, presses the "No Material Confirmation" on the slave operation cabinet, and the material basket 100 is automatically transferred to the empty basket translation mechanism 7 until the modules in 4 baskets are unloaded. At the same time, the empty material basket 100 is transferred to the empty basket translation mechanism 7. After the empty basket translation mechanism 7 is full of 4 material baskets, it automatically sends the 4 empty material baskets to the feeding mechanism 2, and the feeding mechanism 2 receives the empty material baskets and repeats the above process.

[0081] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lost foam casting steam dewaxing system, characterized in that, Comprising: A material basket (100) for loading modules (200); A track (1) arranged in a loop; A loading mechanism (2) slidably arranged on the track (1) for carrying the material basket (100) loaded with the modules (200) to be dewaxed; A dewaxing kettle (3) having a through structure, arranged on the track (1) for performing dewaxing operations on the modules (200) to be dewaxed; A feeding translation mechanism (4) arranged on the track (1) between the loading mechanism (2) and the dewaxing kettle (3), including a first moving platform (41) moving linearly along the track (1), and a first transfer device (42) arranged on the first moving platform (41), the first transfer device (42) being used to transfer the material basket (100) on the loading mechanism (2) to the first moving platform (41) multiple times and push it into the dewaxing kettle (3); A discharging mechanism (5) slidably arranged on the track (1) for carrying the material basket (100) after dewaxing is completed; A discharging translation mechanism (6) arranged on the track (1) between the dewaxing kettle (3) and the discharging mechanism (5), including a second moving platform (61) moving linearly along the track (1), the second moving platform (61) being used to carry multiple material baskets (100) from the dewaxing kettle (3), and a second transfer device (62) arranged on the discharging platform, the second transfer device (62) being used to transfer the multiple material baskets (100) on the second moving platform (61) to the discharging mechanism (5) in sequence; An empty basket translation mechanism (7) arranged on the track (1) between the discharging mechanism (5) and the loading mechanism (2), including a third moving platform (71) moving linearly along the track (1), and a third transfer device (72) arranged on the third moving platform (71), the third transfer device (72) being used to transfer the material basket (100) on the discharging mechanism to the loading mechanism (2) through the third moving platform (71), the loading mechanism (2) and the discharging mechanism (5) having the same structure. Among them, the loading mechanism (2) includes a first bearing frame (21) for carrying a single material basket (100), a first walking wheel (22) rolling along the track (1) is arranged at the bottom of the first bearing frame (21), a first driving motor (23) for driving the first walking wheel (22) to rotate is arranged on the first bearing frame (21), and a plurality of first roller bearings (24) for the material basket (100) to slide are respectively arranged on both sides of the top of the first bearing frame (21) along the traveling direction of the track (1); The first mobile platform (41), the second mobile platform (61) and the third mobile platform (71) have the same structure. Among them, the first mobile platform (41) includes a second carrier (411) for carrying at least two baskets (100). A second traveling wheel (412) for rolling along the track (1) is provided at the bottom of the second carrier (411). A second driving motor (413) for driving the second traveling wheel (412) to rotate is provided on the second carrier (411). The top surface of the second carrier (411) is flush with the top surface of the first carrier (21). A plurality of second roller bearings (414) for the basket (100) to slide are respectively provided on both sides of the top of the second carrier (411) along the traveling direction of the track (1). The first transfer device (42), the second transfer device (62) and the third transfer device (72) have the same structure. Among them, the first transfer device (42) includes a transfer frame (421). The transfer frame (421) is arranged in the second carrier (411). A third traveling wheel (422) is rotatably provided at the bottom of the transfer frame (421). A slide rail (423) connected to the third traveling wheel (422) in a rolling manner is provided in the second carrier (411). The running direction of the slide rail (423) is the same as the running direction of the track (1). A straight rack (424) in the same running direction as the slide rail (423) is further provided in the second carrier (411). A third driving motor (425) is provided in the transfer frame (421). The output shaft of the third driving motor (425) is meshed and driven with the straight rack (424) through a gear. The first transfer device (42) further includes a traction device (43). The traction device (43) is provided on the top of the transfer frame (421) for pulling the basket (100). The traction device (43) includes an extension frame (431), a first push-pull assembly (432) and a second push-pull assembly (433). The extension frame (431) is fixedly arranged on the transfer frame (421), and the direction of the extension frame (431) faces the feeding mechanism (2). The first push-pull assembly (432) is fixedly arranged on the top surface of the transfer frame (421). The second push-pull assembly (433) is fixedly arranged on the top surface of the end of the extension frame (431). The first push-pull assembly (432) and the second push-pull assembly (433) have the same structure. Among them, the first push-pull assembly (432) includes a fixed seat (4321) and a rotating member (4320). The fixed seat (4321) is fixedly installed at the corner of the top surface of the transfer frame (421). The longitudinal section of the rotating member (4320) is trapezoidal. The upper end of the rotating member (4320) has a first stress surface (4322), and the lower end of the rotating member (4320) has a second stress surface (4323). The rotating member (4320) is hinged to the fixed seat (4321). The distance from the hinge point between the rotating member (4320) and the fixed seat (4321) to the second stress surface (4323) is greater than the distance from the hinge point between the rotating member (4320) and the fixed seat (4321) to the first stress surface (4322). The outer bottom surface of the material basket (100) is provided with a plurality of stoppers (101) that abut against the first force-bearing surface (4322) of the rotating member (4320); The dewaxing kettle (3) includes a kettle body (31) and a heating device (32) connected to the kettle body (31). The kettle body (31) is a cylindrical structure with openings at both ends. Kettle doors (33) are respectively provided at both ends of the kettle body (31). A conveying rail (34) connected to the track (1) is provided in the kettle body (31). The top surface of the conveying rail (34) is flush with the top surface of the second carrier frame (411), and a plurality of third roller bearings (35) for sliding the material basket (100) are provided on the top surface of the conveying rail (34) along the travel direction.

2. The investment casting steam dewaxing system according to claim 1, wherein: The heating device (32) includes a steam inlet pipe (321) and a steam exhaust pipe (322) respectively connected to the kettle body (31); the steam inlet pipe (321) is connected to a steam inlet regulating valve (323); the steam exhaust pipe (322) is connected to a steam outlet regulating valve (324); the kettle body (31) is also provided with a temperature sensor (325) for detecting the internal temperature of the kettle body (31), and a pressure sensor (326) for detecting the internal pressure of the kettle body (31).

3. The investment casting steam dewaxing system according to claim 2, wherein: A wax-water collecting chamber (311) is further provided at the inner bottom of the kettle body (31), and a wax discharge pipe (312) connected to the wax-water collecting chamber is provided on the outer wall of the kettle body (31), and a solenoid valve (313) is provided on the wax discharge pipe.

4. A lost foam casting steam dewaxing system according to claim 1, characterized in that: The invention also includes an electrical control system, which includes a master station control cabinet and a plurality of slave station control cabinets. The master station control cabinet is connected to the loading mechanism (2) and the feeding translation mechanism (4), and each slave station control cabinet is connected to the dewaxing kettle (3), the unloading mechanism (5), the discharging translation mechanism (6) and the empty basket translation mechanism (7). The master station control cabinet and each slave station control cabinet are connected to each other by wireless communication.

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