A shell preparation device for breathing valve casting

Abstract

The present application relates to the technical field of breathing valve casting, and discloses a mould shell preparation device for breathing valve casting, which comprises a rotating frame, four orientations of the rotating frame correspond to coating orientation, sand laying orientation, drying orientation and cooling orientation, and are used for executing different processes; a clamping unit arranged on the rotating frame, the clamping unit comprises a mechanical arm mechanism, the mechanical arm mechanism comprises a mechanical arm and a chuck, the mechanical arm drives the chuck to rotate when rotating, one end of the mechanical arm is provided with a supporting shaft, the clamping unit further comprises an adjusting mechanism, and the bottom of the rotating frame is provided with a power facility for driving the rotating frame to rotate, so that the clamping unit rotates to different orientations to execute different processes. According to the present application, multiple clamping units are arranged on the rotating frame, so that multiple wax moulds can be clamped at the same time, each orientation of the rotating frame corresponds to different functions, so that the wax moulds are processed in different ways when rotating to different orientations, and the preparation of the mould shell is quickly completed.

Description

Technical Field

[0001] This invention belongs to the field of breather valve casting technology, specifically, it relates to a mold preparation device for breather valve casting. Background Technology

[0002] Breathing valves are critical safety components of storage tanks in the petroleum and chemical industries. Their core castings, such as the shell and valve core, must possess high airtightness, corrosion resistance, and structural integrity to ensure precise control of the inflow and outflow of media under fluctuating pressure. Currently, investment casting is the mainstream process for producing breathing valve castings. The preparation of the mold shell is the core step that determines the dimensional accuracy and surface quality of the casting, directly affecting subsequent pouring, cleaning, and the final product yield.

[0003] Traditional shell preparation relies on a multi-layer coating process using silica sol and mullite, encompassing multiple steps such as mold making, dip coating, sand application, drying, dewaxing, and firing. Each step is highly dependent on manual operation, resulting in labor-intensive and time-consuming processes: the dip coating step requires manual control of the coating thickness, relying on experience to adjust the dipping angle and dwell time, with each operation taking approximately 15-20 minutes, and the amount of repetitive manual labor is significant when applying multiple layers; the sand application step requires manual transfer of the shell to the sand box and manual assistance in sand particle adhesion, which is not only labor-intensive but also prone to uneven sand layer distribution due to differences in manual operation; the steps of transferring the shell to the dewaxing process after drying and then to the firing furnace after dewaxing all require manual handling, which is time-consuming and carries the risk of collision damage.

[0004] At the same time, the current production mode of investment casting shell preparation for breather valves still adopts a discrete production mode, and an integrated intelligent casting island for shell preparation has not yet been formed. There is a lack of unified intelligent control and automatic flow mechanism between processes such as coating, sand laying, and drying. Parameter adjustment and process switching are highly dependent on manual operation. This is not only difficult to adapt to the island layout upgrade of intelligent casting workshops, but also cannot ensure the quality consistency of batch shell preparation through unitized closed-loop control, which has become a key shortcoming affecting the intelligent mass production of breather valve castings.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a mold shell preparation device for casting breather valves. By setting multiple clamping units on the rotating frame, multiple wax molds can be clamped simultaneously. Each position of the rotating frame corresponds to a different function, so that the wax molds are processed differently when rotated to different positions, thereby quickly completing the preparation of the mold shell. By setting a central control system to control the entire device, the use of manpower can be reduced and the degree of automation can be improved during the mold shell preparation process.

[0007] The technical solution adopted by this invention to solve its technical problem is:

[0008] An apparatus for preparing a mold shell for casting a breather valve, comprising:

[0009] The rotating frame has four rotational positions corresponding to the coating position, sand-spreading position, drying position, and cooling position, which are used to perform different processes;

[0010] A clamping unit is provided on the rotating frame. The clamping unit includes a robotic arm mechanism, which includes a robotic arm and a gripper. When the robotic arm rotates, it drives the gripper to rotate. A support shaft is installed at one end of the robotic arm. The clamping unit also includes an adjustment mechanism, which is used to drive the support shaft to rotate.

[0011] The bottom of the rotating frame is equipped with a power device for driving the rotating frame to rotate, so that the clamping unit can perform different processes when it rotates to different positions.

[0012] In a preferred embodiment of the present invention, a mounting base is fixedly installed on the rotating frame, the robotic arm includes a support column, the support column is fixedly connected to a support shaft via a connector, the support shaft is rotatably connected to the mounting base, a support member is rotatably installed at one end of the support column, a transmission shaft is rotatably installed at one end of the support member, one end of the transmission shaft is fixedly connected to a clamp, a first transmission assembly is provided between the support member and the support column, and a second transmission assembly is provided on one side of the support member.

[0013] In a preferred embodiment of the present invention, the first transmission component includes two meshing gears, one of which is fixedly connected to a support member. A power source is fixedly mounted on the support column, and the output end of the power source is fixedly connected to the other gear. The second transmission component includes two synchronous pulleys of different sizes, which are connected by a synchronous belt. The larger synchronous pulley is fixedly connected to the support column, and the smaller synchronous pulley is rotatably connected to the support member and connected to the transmission shaft via a universal joint.

[0014] In a preferred embodiment of the present invention, the adjusting mechanism includes a guide member fixedly installed on the mounting base, a stop rod movably connected to the guide member, an insert rod fixedly installed on one side of the stop rod, and rotating sleeves fixedly installed at both ends of the support shaft. The insert rod is movably inserted into the rotating sleeve, and when the stop rod moves along the guide member, it drives the support shaft to rotate through the insert rod and the rotating sleeve.

[0015] In a preferred embodiment of the present invention, the adjusting mechanism further includes a limiting rod fixedly installed on the top of the rotating frame, a movable frame movably connected to the limiting rod, a limiting groove being formed on the stop rod, the stop rod being movably connected to the movable frame through the limiting groove, a fixing plate being fixedly installed on the top of the limiting rod, a lifting assembly being installed on the fixing plate, and the output end of the lifting assembly being fixedly connected to the movable frame.

[0016] In a preferred embodiment of the present invention, a coating module is provided at the coating position, a sand spreading machine is provided at the sand spreading position, a dryer is provided at the drying position, and a fan is provided at the cooling position. The coating module includes a material box, an inner membrane is installed on the inner wall of the material box, one end of the inner membrane is separated from the inner wall of the material box, a partition is installed on the inner wall of the inner membrane, a connecting groove is opened at the bottom of the partition, a drive box is installed at one end of the material box, a lead screw is installed on the drive box, the lead screw passes through the material box and extends into the interior, a push roller is installed at one end of the lead screw, and a liquid level sensor is installed on the top of the material box.

[0017] In a preferred embodiment of the present invention, a processor is further included, wherein the processor is configured with a central control system for controlling a mold shell preparation apparatus for casting a breather valve, the central control system comprising:

[0018] The orientation acquisition module is used to acquire the orientation information of each clamping unit on the rotating frame;

[0019] The action execution module controls the adjustment mechanisms on each clamping unit to be in different states based on the collected orientation information;

[0020] The liquid level compensation module is used to compensate for the decrease in liquid level caused by the reduction of coating material during shell coating.

[0021] In a preferred embodiment of the present invention, the orientation acquisition module includes assigning number information to clamping units at different positions, the central control system controls each clamping unit individually, and the orientation acquisition module also includes setting instruction information for different orientations. The instruction information includes setting a low-position instruction for the coating orientation, a mid-position instruction for the sand-spreading orientation and the cooling orientation, and a high-position instruction for the drying orientation. Based on the different orientations of the clamping units, corresponding instructions are issued to the lifting assembly to make the robotic arm be in different positions.

[0022] In a preferred embodiment of the present invention, the action execution module includes an adjustment strategy. The adjustment strategy controls the lifting component to work based on the acquired instruction information. When a low-level instruction is acquired, the lifting component is controlled to drive the clamping unit in a vertically downward state. When a mid-level instruction is acquired, the lifting component is controlled to drive the clamping unit in a horizontal state. When a high-level instruction is acquired, the lifting component is controlled to drive the clamping unit in a vertically upward state.

[0023] In a preferred embodiment of the present invention, the liquid level compensation module is used to set a first liquid level position and a second liquid level position, and to obtain the real-time liquid level position of the coating in the tank through a liquid level sensor. The first liquid level position represents the liquid level position when the coating in the tank is full, and the second liquid level position represents the liquid level position when the coating depth in the tank needs to be increased. When the real-time liquid level position is lower than the second liquid level position, the liquid level compensation module controls the drive box to push the push roller to move and make the inner film tilt up until the real-time liquid level position reaches the first liquid level position.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] This invention provides a rotating frame with multiple clamping units to clamp multiple wax models simultaneously. Each position of the rotating frame corresponds to a different function, so that the wax model is processed differently when rotated to different positions, thereby quickly completing the preparation of the mold shell.

[0026] This invention controls the entire device through a central control system, thereby reducing manpower and increasing automation in the shell preparation process.

[0027] Meanwhile, this invention constructs a smart casting island for mold preparation specifically for breather valve castings, breaking the limitations of the traditional discrete process layout. Through an island-integrated architecture and intelligent control system, it realizes closed-loop automated production of mold preparation. This unit can independently complete the entire mold preparation process, or it can be networked with other smart casting islands for processes such as melting and casting, providing core process support for the construction of a full-process intelligent casting production line for breather valves, which is in line with the development direction of intelligent upgrading in the casting industry. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a mold shell preparation device for casting a breather valve according to the present invention;

[0029] Figure 2 This is a schematic diagram of the rotating frame structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the support component of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure at the fixing plate of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the guide component of the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the material box of the present invention.

[0034] Figure label:

[0035] 100. Rotating frame; 101. Mounting base; 102. Support shaft; 103. Support column; 104. Support component; 105. Clamp; 106. Power source; 107. First transmission assembly; 108. Second transmission assembly; 109. Transmission shaft;

[0036] 200. Rotating sleeve; 201. Insert rod; 202. Stop bar; 203. Guide component; 204. Limiting groove; 205. Moving frame; 206. Limiting rod; 207. Fixing plate; 208. Lifting assembly;

[0037] 300. Feed hopper; 301. Inner membrane; 302. Baffle plate; 303. Connecting channel; 304. Liquid level sensor; 305. Push roller; 306. Drive box; 307. Lead screw;

[0038] 400, sand spreading machine; 500, dryer; 600, fan. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0040] Example 1:

[0041] like Figures 1-6 The device shown is a mold preparation device for breather valve casting. The device is an intelligent casting island for breather valve casting mold preparation. It uses a rotary four-station rotating frame as the core carrier and integrates four core processes, namely coating, sand laying, drying and cooling, into a single island unit. It is equipped with a central control system that integrates orientation acquisition, action execution and liquid level compensation functions. It has intelligent decision-making and execution capabilities such as automatic station identification, adaptive adjustment of wax mold posture and autonomous compensation of coating liquid level. It can be used as an independent production unit to realize the unmanned operation of the entire mold preparation process.

[0042] Specifically, a mold shell preparation apparatus for casting breather valves includes:

[0043] The rotating frame 100 has four rotation directions corresponding to the coating direction, sand-laying direction, drying direction, and cooling direction, which are used to perform different processes.

[0044] A clamping unit is provided on the rotating frame 100. The clamping unit includes a robotic arm mechanism, which includes a robotic arm and a chuck 105. When the robotic arm rotates, it drives the chuck 105 to rotate. A support shaft 102 is installed at one end of the robotic arm. The clamping unit also includes an adjustment mechanism, which is used to drive the support shaft 102 to rotate.

[0045] The bottom of the rotating frame 100 is equipped with a power facility for driving the rotating frame 100 to rotate, so that the clamping unit can perform different processes when it rotates to different positions.

[0046] like Figure 3 As shown, in a specific embodiment, a mounting base 101 is fixedly installed on the rotating frame 100. The robotic arm includes a support column 103, which is fixedly connected to a support shaft 102 via a connector. The support shaft 102 is rotatably connected to the mounting base 101. A support member 104 is rotatably mounted on one end of the support column 103, and a transmission shaft 109 is rotatably mounted on one end of the support member 104. One end of the transmission shaft 109 is fixedly connected to a clamp 105. A first transmission assembly 107 is provided between the support member 104 and the support column 103, and a second transmission assembly 108 is provided on one side of the support member 104. In this configuration, the first transmission assembly 107 is used to drive the support member 104 to rotate around the support column 103, and the second transmission assembly 108 is used to drive the clamp 105 to rotate. The clamp 105 is electrically driven to clamp the wax model.

[0047] like Figure 3 As shown, the first transmission assembly 107 further includes two meshing gears, one of which is fixedly connected to the support member 104. A power source 106 is fixedly mounted on the support column 103, and the output end of the power source 106 is fixedly connected to the other gear. The second transmission assembly 108 includes two synchronous pulleys of different sizes, connected by a synchronous belt. The larger synchronous pulley is fixedly connected to the support column 103, and the smaller synchronous pulley is rotatably connected to the support member 104 and connected to the drive shaft 109 via a universal joint. In this configuration, the two gears in the first transmission assembly 107 are of different sizes, with the smaller gear mounted on the output end of the power source 106 and the larger gear mounted on the support member 104, so that the first transmission assembly 107 has the function of deceleration and torque increase. The two synchronous pulleys of the second transmission assembly 108 are of different sizes so that when the support member 104 rotates around the support column 103, it drives the chuck 105 to rotate at a faster speed.

[0048] like Figures 4 to 5 As shown, the adjustment mechanism further includes a guide member 203 fixedly mounted on the mounting base 101. A stop rod 202 is movably connected to the guide member 203. An insert rod 201 is fixedly mounted on one side of the stop rod 202. Rotating sleeves 200 are fixedly mounted on both ends of the support shaft 102. The insert rod 201 is movably inserted into the rotating sleeve 200. When the stop rod 202 moves along the guide member 203, it drives the support shaft 102 to rotate through the insert rod 201 and the rotating sleeve 200. In this configuration, the distance between the various positions of the guide member 203 and the center position of the support shaft 102 is different. When the stop rod 202 moves along the guide member 203, it drives the insert rod 201 to slide within the rotating sleeve 200.

[0049] like Figures 4 to 5 As shown, the adjustment mechanism further includes a limiting rod 206 fixedly installed on the top of the rotating frame 100. A movable frame 205 is movably connected to the limiting rod 206. A limiting groove 204 is provided on the stop rod 202, and the stop rod 202 is movably connected to the movable frame 205 through the limiting groove 204. A fixing plate 207 is fixedly installed on the top of the limiting rod 206, and a lifting assembly 208 is installed on the fixing plate 207. The output end of the lifting assembly 208 is fixedly connected to the movable frame 205. In this configuration, the lifting assembly 208 consists of a gear and a rack driven by a power motor. The rack is fixedly connected to the movable frame 205. When the rack in the lifting assembly 208 moves up and down, it drives the movable frame 205 to move, thereby pushing the stop rod 202 up and down.

[0050] like Figure 1 , Figure 6 As shown, a coating module is further provided in the coating position, a sand spreading machine 400 is provided in the sand spreading position, a dryer 500 is provided in the drying position, and a fan 600 is provided in the cooling position. The coating module includes a material box 300, an inner membrane 301 is installed on the inner wall of the material box 300, one end of the inner membrane 301 is separated from the inner wall of the material box 300, a partition 302 is installed on the inner wall of the inner membrane 301, a connecting groove 303 is opened at the bottom of the partition 302, a drive box 306 is installed at one end of the material box 300, a lead screw 307 is installed on the drive box 306, the lead screw 307 passes through the material box 300 and extends into the interior, a push roller 305 is installed at one end of the lead screw 307, and a liquid level sensor 304 is installed on the top of the material box 300. In this setup, a nut seat is installed on the drive box 306, which works in conjunction with the lead screw 307 to drive the lead screw 307 to move. During the movement, the push roller 305 is driven to move, thereby changing the size of the space below the inner membrane 301, thus adjusting the volume of the inner membrane 301 and changing the liquid level.

[0051] The implementation principle of the mold shell preparation device for casting a breather valve in this embodiment is as follows: The wax model is fixed by the clamp 105, the power source 106 is started, and the power source 106 drives the support member 104 to rotate through the first transmission component 107, so that the clamp 105 and the wax model rotate around the support column 103. At the same time, the second transmission component 108 is driven to revolve around the support column 103, so that the synchronous belt of the second transmission component 108 rotates and drives the transmission shaft 109 to rotate. The transmission shaft 109 drives the clamp 105 to rotate, so that the wax model follows the rotation, thereby realizing multi-angle transformation.

[0052] When adjusting the orientation of the robotic arm, the lifting assembly 208 is controlled to move the moving frame 205 up and down. When the moving frame 205 moves, the limit groove 204 drives the stop bar 202 to move, so that the stop bar 202 moves along the guide member 203. During the movement, the insertion rod 201 and the rotating sleeve 200 drive the support shaft 102 to rotate, so that the support column 103 drives the support member 104 and the clamp 105 to different positions.

[0053] Example 2:

[0054] A mold shell preparation apparatus for casting a breather valve further includes a processor, the processor being equipped with a central control system for controlling the mold shell preparation apparatus for casting a breather valve, the central control system including:

[0055] The orientation acquisition module is used to acquire the orientation information of each clamping unit on the rotating frame 100;

[0056] The action execution module controls the adjustment mechanisms on each clamping unit to be in different states based on the collected orientation information;

[0057] The liquid level compensation module is used to compensate for the decrease in liquid level caused by the reduction of coating material during shell coating.

[0058] The orientation acquisition module includes assigning number information to the clamping units at different positions. The central control system controls each clamping unit individually. The orientation acquisition module also includes setting instruction information for different orientations. The instruction information includes setting a low-level instruction for the coating orientation, a mid-level instruction for the sand-spreading orientation and the cooling orientation, and a high-level instruction for the drying orientation. Based on the different orientations of the clamping units, the lifting assembly 208 issues corresponding instructions to make the robotic arm position at different positions.

[0059] The action execution module includes an adjustment strategy. The adjustment strategy controls the lifting component 208 to work based on the acquired instruction information. When a low-level instruction is acquired, the lifting component 208 is controlled to drive the clamping unit to a vertically downward state. When a mid-level instruction is acquired, the lifting component 208 is controlled to drive the clamping unit to a horizontal state. When a high-level instruction is acquired, the lifting component 208 is controlled to drive the clamping unit to a vertically upward state.

[0060] The action execution module also includes a sand-laying control strategy, which is used to control the sand-laying time. The sand-laying control strategy includes obtaining the sand density above the wax model and the sand density below the wax model, and configuring an end threshold. By comparing the sand density below with the sand density above, the uncovered rate of quartz sand is obtained. When the uncovered rate reaches the end threshold, it indicates that the surface of the wax model can no longer be covered with more quartz sand, the sand-laying test ends, and the sand-laying time is obtained.

[0061] The action execution module also includes configuring the stop time of the rotating frame 100, and acquiring and comparing the sand spreading time and the drying time of the dryer 500, wherein the stop time of the rotating frame 100 is the larger value between the sand spreading time and the drying time.

[0062] The action execution module also includes monitoring the motion state of the rotating frame 100. When the rotating frame 100 changes from a moving state to a stationary state, it controls the sand spreading machine 400, the dryer 500 and the fan 600 to start working. When the rotating frame 100 changes from a stationary state to a moving state, it controls the sand spreading machine 400, the dryer 500 and the fan 600 to stop working.

[0063] The liquid level compensation module is used to set the first liquid level position and the second liquid level position, and to obtain the real-time liquid level position of the coating in the material tank 300 through the liquid level sensor 304. The first liquid level position represents the liquid level position when the coating in the material tank 300 is full, and the second liquid level position represents the liquid level position when the coating depth in the material tank 300 needs to be increased. When the real-time liquid level position is lower than the second liquid level position, the liquid level compensation module controls the drive box 306 to push the push roller 305 to move and make the inner membrane 301 tilt up until the real-time liquid level position reaches the first liquid level position.

[0064] The liquid level compensation module also includes a liquid level detection strategy, which includes obtaining the height difference between the peak and trough of the liquid level fluctuation and configuring a stability threshold. When the height difference between the peak and trough is less than the stability threshold, it indicates that the liquid level tends to be stable. The average value of the peak and trough heights is obtained as the actual position of the liquid level and compared with the first liquid level position and the second liquid level position.

[0065] The above-mentioned scheme constructs a smart casting island for mold preparation of breather valve castings, breaking the limitations of the traditional discrete layout of processes. Through the island-integrated architecture and intelligent control system, it realizes closed-loop automated production of mold preparation. This unit can independently complete the entire process of mold preparation, or it can be networked with other smart casting islands such as smelting and casting, providing core process support for the construction of a full-process intelligent casting production line for breather valves, which is in line with the development direction of intelligent upgrading in the casting industry.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A mold shell preparation apparatus for casting breather valves, characterized in that, include: The rotating frame (100) has four rotation directions corresponding to the coating direction, sand-spreading direction, drying direction and cooling direction, which are used to perform different processes; A clamping unit is provided on the rotating frame (100). The clamping unit includes a robotic arm mechanism, which includes a robotic arm and a chuck (105). When the robotic arm rotates, it drives the chuck (105) to rotate. A support shaft (102) is installed at one end of the robotic arm. The clamping unit also includes an adjustment mechanism, which is used to drive the support shaft (102) to rotate. The bottom of the rotating frame (100) is provided with a power facility for driving the rotating frame (100) to rotate, so that the clamping unit can perform different processes when it rotates to different positions.

2. The mold shell preparation apparatus for casting a breather valve according to claim 1, characterized in that, A mounting base (101) is fixedly installed on the rotating frame (100). The robotic arm includes a support column (103). The support column (103) is fixedly connected to the support shaft (102) through a connector. The support shaft (102) is rotatably connected to the mounting base (101). A support member (104) is rotatably installed at one end of the support column (103). A transmission shaft (109) is rotatably installed at one end of the support member (104). One end of the transmission shaft (109) is fixedly connected to the chuck (105). A first transmission assembly (107) is provided between the support member (104) and the support column (103). A second transmission assembly (108) is provided on one side of the support member (104).

3. The mold shell preparation apparatus for casting a breather valve according to claim 2, characterized in that, The first transmission assembly (107) includes two meshing gears, one of which is fixedly connected to the support member (104). A power source (106) is fixedly installed on the support column (103), and the output end of the power source (106) is fixedly connected to the other gear. The second transmission assembly (108) includes two synchronous pulleys of different sizes, which are connected by a synchronous belt. The larger synchronous pulley is fixedly connected to the support column (103), and the smaller synchronous pulley is rotatably connected to the support member (104) and connected to the transmission shaft (109) through a universal joint.

4. The mold shell preparation apparatus for casting a breather valve according to claim 3, characterized in that, The adjustment mechanism includes a guide (203) fixedly installed on the mounting base (101), a stop (202) movably connected to the guide (203), an insert (201) fixedly installed on one side of the stop (202), and rotating sleeves (200) fixedly installed at both ends of the support shaft (102). The insert (201) is movably inserted into the rotating sleeve (200). When the stop (202) moves along the guide (203), it drives the support shaft (102) to rotate through the insert (201) and the rotating sleeve (200).

5. The mold shell preparation apparatus for casting a breather valve according to claim 4, characterized in that, The adjustment mechanism also includes a limiting rod (206) fixedly installed on the top of the rotating frame (100). A movable frame (205) is movably connected to the limiting rod (206). A limiting groove (204) is opened on the stop rod (202). The stop rod (202) is movably connected to the movable frame (205) through the limiting groove (204). A fixing plate (207) is fixedly installed on the top of the limiting rod (206). A lifting assembly (208) is installed on the fixing plate (207). The output end of the lifting assembly (208) is fixedly connected to the movable frame (205).

6. The mold shell preparation apparatus for casting a breather valve according to claim 5, characterized in that, A coating module is provided at the coating position, a sand spreading machine (400) is provided at the sand spreading position, a dryer (500) is provided at the drying position, and a fan (600) is provided at the cooling position. The coating module includes a material box (300). An inner membrane (301) is installed on the inner wall of the material box (300). One end of the inner membrane (301) is separated from the inner wall of the material box (300). A partition (302) is installed on the inner wall of the inner membrane (301). A connecting groove (303) is opened at the bottom of the partition (302). A drive box (306) is installed at one end of the material box (300). A lead screw (307) is installed on the drive box (306). The lead screw (307) passes through the material box (300) and extends into the interior. A push roller (305) is installed at one end of the lead screw (307). A liquid level sensor (304) is installed on the top of the material box (300).

7. The mold shell preparation apparatus for casting a breather valve according to claim 6, characterized in that, It also includes a processor configured with a central control system for controlling a shell preparation apparatus for casting a breather valve, the central control system comprising: The orientation acquisition module is used to acquire the orientation information of each clamping unit on the rotating frame (100); The action execution module controls the adjustment mechanisms on each clamping unit to be in different states based on the collected orientation information; The liquid level compensation module is used to compensate for the decrease in liquid level caused by the reduction of coating material during shell coating.

8. The mold shell preparation apparatus for casting a breather valve according to claim 7, characterized in that, The orientation acquisition module includes assigning number information to clamping units at different positions. The central control system controls each clamping unit individually. The orientation acquisition module also includes setting instruction information for different orientations. The instruction information includes setting a low-position instruction for the coating orientation, a mid-position instruction for the sand-spreading orientation and the cooling orientation, and a high-position instruction for the drying orientation. Based on the clamping unit's orientation, the module issues corresponding instructions to the lifting assembly (208) to place the robotic arm in different positions.

9. The mold shell preparation apparatus for casting a breather valve according to claim 8, characterized in that, The action execution module includes an adjustment strategy, which controls the lifting component (208) to work based on the acquired instruction information. When a low-level instruction is acquired, the lifting component (208) is controlled to be in a vertically downward state in the direction of driving the clamping unit. When a mid-level instruction is acquired, the lifting component (208) is controlled to be in a horizontal state in the direction of driving the clamping unit. When a high-level instruction is acquired, the lifting component (208) is controlled to be in a vertically upward state in the direction of driving the clamping unit.

10. The mold shell preparation apparatus for casting a breather valve according to claim 9, characterized in that, The liquid level compensation module is used to set the first liquid level position and the second liquid level position, and to obtain the real-time liquid level position of the coating in the hopper (300) through the liquid level sensor (304). The first liquid level position represents the liquid level position when the coating in the hopper (300) is full, and the second liquid level position represents the liquid level position when the coating depth in the hopper (300) needs to be increased. When the real-time liquid level position is lower than the second liquid level position, the liquid level compensation module controls the drive box (306) to push the push roller (305) to move and make the inner membrane (301) tilt up until the real-time liquid level position reaches the first liquid level position.

Images