Automatic oil baking surface treatment device for precision sand casting
By combining clamping and drying mechanisms, the problems of unstable clamping and uneven heating of castings during the drying process are solved, achieving stable clamping and uniform drying of castings, and improving the adhesion of rust-preventive oil and drying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 临沂富中机械有限公司
- Filing Date
- 2025-10-10
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, castings are prone to tilting during the drying process due to unstable clamping, and the air outlet pipe cannot adjust the air jet angle and position, resulting in uneven heating of parts such as the arc-shaped inner wall of the casting pot, which affects the adhesion of the rust-preventive oil and the drying efficiency.
The casting is stably clamped and rotated by a motor-driven lead screw and clamping block. The drying mechanism is driven by a motor to achieve multi-angle and all-round hot airflow coverage, ensuring uniform drying of the casting surface.
It achieves stable clamping and uniform drying of castings, avoids problems such as casting tilting and uneven heating, improves the adhesion of rust-preventive oil and drying efficiency, and meets the requirements of product quality and large-scale production.
Smart Images
Figure CN224486605U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of surface treatment technology for casting metals, and specifically relates to an automated oil-baking surface treatment device for precision sand castings. Background Technology
[0002] Drying is a routine process after spraying rust-preventive oil onto the surface of castings. This process is required for products such as grates and casting pots manufactured by our company. However, existing technologies often use fixed hooks to place the castings in the drying oven, and the air outlet pipes in the drying zone are fixed in place. When heating our products, this not only easily leads to unstable clamping, but also causes the casting pots to be placed at an angle when placed on the fixed hooks. At the same time, the fixed air outlet pipes cannot adjust the air jet angle and position according to the shape of the castings, resulting in uneven heating of parts such as the curved inner wall of the casting pot. This affects the adhesion of the rust-preventive oil and reduces the drying efficiency, making it difficult to meet the requirements of product quality and large-scale production.
[0003] A search revealed a device for applying oil to the surface of metal castings for rust prevention (CN219424757U). The device includes a processing table and a material conveying assembly. Multiple metal castings are arranged below the material conveying assembly. A through hole is opened at the top of the processing table, and an oiling assembly for applying oil to the metal castings is arranged in the through hole. The oiling assembly includes an oiling tank, and a partition is fixedly arranged inside the oiling tank, which divides the oiling tank into an immersion zone and a drying zone.
[0004] Further search revealed that the prior art announcement number CN220804028U describes a device for applying oil to the surface of metal castings for rust prevention. This device includes a mounting plate, support legs mounted at the four corners of the bottom of the mounting plate, a mounting frame mounted at the top of the support legs, an oil storage cavity mounted at the top of the mounting frame, a moving mechanism inside the mounting frame, an electric telescopic rod mounted at the bottom of the moving mechanism, a cavity mounted at the bottom of the electric telescopic rod, a rotating mechanism inside the cavity, and a fixing hook mounted at the bottom of the rotating mechanism.
[0005] The existing technologies described above all use fixed hooks to place metal castings in the drying oven for heating, and the air outlet is fixed in place. When heating our products, this not only easily leads to unstable clamping, but also causes the casting pot to be placed at an angle when placed on the fixed hook. At the same time, the fixed air outlet cannot adjust the air jet angle and position according to the shape of the casting, resulting in uneven heating of parts such as the arc-shaped inner wall of the casting pot. This affects the adhesion of the rust-preventive oil and reduces the drying efficiency. Summary of the Invention
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automated oil-baking surface treatment device for precision sand castings. Through the clamping mechanism, not only is stable clamping of metal castings achieved, but also, through the drying mechanism, uniform drying of the anti-rust oil on the surface of the metal castings is achieved, ensuring product quality and meeting the requirements of large-scale production.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] An automated oil-baking surface treatment device for precision sand castings includes a drying box, a support frame, a collection box, a fixing frame, a slide rail, a drying mechanism, and a clamping mechanism. The drying box is mounted on the support frame, and has an inlet and an outlet at both ends. Sealing doors are provided on the outer sides of both the inlet and outlet at both ends of the drying box. Several sets of fixing frames are installed inside the drying box, and the slide rail is installed inside the drying box via the fixing frames. The clamping mechanism is slidably installed inside the drying box via the slide rail, and the drying mechanism is installed on both sides of the clamping mechanism. A drain outlet is provided at the bottom of the drying box, and a collection box is installed at the bottom of the drain outlet.
[0009] The drying mechanism includes a motor I, a lead screw I, a telescopic tube, a 90° elbow, a sliding plate, a cover plate, a fixed plate, a connecting pipe, an air outlet pipe, a nozzle, and a mounting shell. Two sets of fixed plates are installed on both sides of the bottom of the drying chamber. The lead screw I is rotatably connected to the fixed frame and the fixed plate. The top of the lead screw I passes through the top of the drying chamber. The motor I is installed on the top of the drying chamber, and the output shaft of the motor I is fixedly connected to the lead screw I. Sliding rods are provided on both sides of the lead screw I, and these sliding rods are fixedly connected to the fixed frame and the fixed plate. A sliding plate is provided between the fixed frame and the fixed plate. The sliding plate is threadedly connected to the lead screw I and slidably connected to the sliding rods. Bellows-style protective covers are provided at both the upper and lower ends of the sliding plate, and these bellows-style protective covers are fitted onto the lead screw I.
[0010] The sliding plate is provided with two sets of mounting ports. The 90° elbow is installed in the mounting port. The top of the mounting port is provided with a cover plate. The telescopic pipe is installed at the top of the drying box. The top of the telescopic pipe is the air inlet I. The telescopic end of the telescopic pipe is connected to the top of the 90° elbow. The connecting pipe is connected to the 90° elbow. The air outlet pipe is rotatably connected to the connecting pipe. The air inlet II is provided at the connection between the air outlet pipe and the connecting pipe. Several sets of nozzles are provided on the air outlet pipe.
[0011] Two sets of mounting shells are installed on the sliding plate. The air outlet pipe is rotatably connected to the mounting shell. A gear is provided on the air outlet pipe. An electric push rod is provided on the sliding plate. A rack is provided at the telescopic end of the electric push rod. The rack meshes with the gear. The electric push rod, gear, and rack are all located inside the mounting shell. One end of the rack passes through the mounting shell.
[0012] The clamping mechanism includes pulleys, a sliding frame I, a mounting frame, a telescopic rod I, a motor II, a sliding frame II, a lead screw II, a rotating plate, a motor III, and a spring. The sliding frame I is slidably mounted on the slide rail via pulleys. A mounting frame is installed at the bottom of the sliding frame I. Several sets of sliding grooves are provided on the outer side of the mounting frame. A lead screw II is rotatably mounted on the inner side of the mounting frame. The top end of the lead screw II passes through the mounting frame and the sliding frame I. The motor II is mounted on the sliding frame I. The output shaft of the motor II is fixedly connected to the lead screw II. A protective shell is provided on the outer side of the motor II. The motor II is a forward and reverse reversible motor. The sliding frame II is threadedly connected to the lead screw II. The sliding frame II is slidably connected to the mounting frame via sliding grooves. Bellows-style protective covers are provided at both the top and bottom of the sliding frame II. The bellows-style protective covers are fitted onto the lead screw II.
[0013] The mounting frame and sliding frame II are both equipped with fixed shells. The fixed shells are equipped with mounting grooves on the outside. The rotating plate is rotatably connected to the fixed shells through the mounting grooves. Several sets of telescopic rods I are provided between the two sets of rotating plates. The rotating plate located on the mounting frame is equipped with an internal gear ring on the inside. The motor III is mounted on the top of the fixed shell on the mounting frame. The motor III is equipped with a protective shell on the outside. The output shaft of the motor III is equipped with a gear that meshes with the internal gear ring.
[0014] Both sets of rotating plates are equipped with clamping blocks, and the two sets of clamping blocks are arranged correspondingly. Two sets of telescopic rods II are arranged oppositely in the middle of the clamping blocks. Springs are sleeved on the telescopic rods II, and clamping plates are provided at the telescopic ends of the telescopic rods II.
[0015] The top of the clamping plate is chamfered to serve as a guide, and the tops of both the clamping plate and the clamping block are rounded to better adapt to specific castings.
[0016] The advantages of this utility model compared with the prior art are as follows:
[0017] 1) Motor II drives lead screw II to rotate, causing sliding frame II to move up and down along the sliding groove of the mounting frame. While adjusting the height to accommodate castings of different sizes, the clamping block stably clamps the casting pot and other castings. The arc design of the clamping block fits the outer wall of the casting pot, which can apply balanced pressure from both sides to prevent the casting pot from shifting due to uneven force. Moreover, by clamping the casting pot and other castings with the clamping block, the traditional fixed hook suspension method is replaced, so that the casting pot and other castings can maintain a stable posture of horizontal or close to its shape, and no longer placed at an angle. This not only prevents the castings from being bumped and damaged during the drying process due to shaking, but also avoids the local accumulation of rust-preventive oil caused by tilting, ensuring uniform heating during subsequent drying and improving the curing effect of rust-preventive oil.
[0018] 2) When motor III starts, it drives the internal gear ring to rotate via the rotating gear. Driven by telescopic rod II, the two sets of rotating plates rotate synchronously, thereby driving the casting to rotate inside the drying chamber. At the same time, the nozzles of the drying mechanism continuously spray hot air, which, in conjunction with the rotation of the casting, allows the hot air to fully cover all surfaces of the casting, especially complex areas such as the arc-shaped inner wall of the casting pot and the grid structure of the grate. The electric push rod drives the air outlet pipe to swing, further expanding the coverage of the hot air and ensuring that the rust-preventive oil can be dried and cured evenly. The sliding plate moves up and down under the drive of screw I, so that the height of the nozzle can be adjusted according to the shape of the casting, achieving all-round and multi-angle drying treatment. Attached Figure Description
[0019] Appendix Figure 1 This is a schematic diagram of the structure of an automated oil-baking surface treatment device for precision sand castings according to this utility model;
[0020] Appendix Figure 2 This is a schematic diagram of the internal structure of an automated oil-baking surface treatment device for precision sand castings according to this utility model.
[0021] Appendix Figure 3 It is attached Figure 1 Schematic diagram of the drying mechanism Figure 1 ;
[0022] Appendix Figure 4 It is attached Figure 1 Schematic diagram of the drying mechanism Figure 2 ;
[0023] Appendix Figure 5 It is attached Figure 1 Schematic diagram of the clamping mechanism Figure 1 ;
[0024] Appendix Figure 6 It is attached Figure 5 Schematic diagram of the position of the lead screw II;
[0025] Appendix Figure 7 It is attached Figure 1 Schematic diagram of the clamping mechanism Figure 2 ;
[0026] Appendix Figure 8 This is a schematic diagram of the appearance of an automated oil-baking surface treatment device for precision sand castings according to this utility model;
[0027] In the diagram: 1. Drying oven; 101. Support frame; 102. Sealing door; 103. Collection box; 104. Fixing frame; 105. Slide rail; 2. Drying mechanism; 21. Motor I; 22. Lead screw I; 23. Sliding rod; 24. Telescopic tube; 2401. Air inlet I; 25. 90° elbow; 26. Sliding plate; 2601. Mounting port; 2602. Cover plate; 27. Fixing plate; 28. Connecting pipe; 29. Air outlet pipe; 290 1. Air inlet II; 210. Nozzle; 211. Electric push rod; 212. Mounting housing; 3. Clamping mechanism; 31. Pulley; 32. Sliding frame I; 33. Mounting frame; 3301. Sliding groove; 34. Telescopic rod I; 35. Motor II; 36. Sliding frame II; 37. Lead screw II; 38. Fixed housing; 39. Rotating plate; 310. Motor III; 311. Clamping block; 312. Clamping plate; 313. Spring; 314. Telescopic rod II. Detailed Implementation
[0028] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-8 The technical solution of this utility model will be further described in detail below.
[0029] An automated oil-baking surface treatment device for precision sand castings includes a drying chamber 1, a support frame 101, a collection box 103, a fixing frame 104, a slide rail 105, a drying mechanism 2, and a clamping mechanism 3. The drying chamber 1 is mounted on the support frame 101. The drying chamber 1 has an inlet and an outlet at both ends, and sealing doors 102 are provided on the outer sides of both the inlet and outlet. Several sets of fixing frames 104 are installed inside the drying chamber 1. The slide rail 105 is installed inside the drying chamber 1 via the fixing frames 104. The clamping mechanism 3 is slidably installed inside the drying chamber 1 via the slide rail 105. The drying mechanism 2 is installed on both sides of the clamping mechanism 3. A drain outlet is provided at the bottom of the drying chamber 1, and a collection box 103 is installed at the bottom of the drain outlet.
[0030] As described above, after the precision sand casting is coated with oil, it is fixed by the clamping mechanism 3. After the sealing door 102 is closed, the clamping mechanism 3 moves along the slide rail 105 in the drying chamber 1. At the same time, the drying mechanism 2 is started to perform uniform oil baking treatment on the casting. After the treatment is completed, the sealing door 102 is opened, and the clamping mechanism 3 moves the casting out of the drying chamber 1. During the process, excess anti-rust oil on the surface of the casting drips into the bottom of the drying chamber 1. Excess anti-rust oil flows into the collection box 103 through the drain port at the bottom of the drying chamber 1 periodically.
[0031] The drying mechanism 2 includes a motor I21, a lead screw I22, a telescopic tube 24, a 90° elbow 25, a sliding plate 26, a cover plate 2602, a fixing plate 27, a connecting pipe 28, an air outlet pipe 29, a nozzle 210, and a mounting shell 212. Two sets of fixing plates 27 are installed on both sides of the bottom of the drying chamber 1. The lead screw I22 is rotatably connected to the fixing frame 104 and the fixing plate 27. The top end of the lead screw I22 passes through the top of the drying chamber 1. The motor I21 is installed on the top of the drying chamber 1, and the output shaft of the motor I21 is fixedly connected to the lead screw I22. Sliding rods 23 are provided on both sides of the lead screw I22. The sliding rods 23 are fixedly connected to the fixing frame 104 and the fixing plate 27. A sliding plate 26 is provided between the fixing frame 104 and the fixing plate 27. The sliding plate 26 is threadedly connected to the lead screw I22 and slidably connected to the sliding rods 23. Bellows-style protective covers are provided at both the upper and lower ends of the sliding plate 26, and these bellows-style protective covers are fitted onto the lead screw I22.
[0032] The sliding plate 26 is provided with two sets of mounting ports 2601. The 90° elbow 25 is installed in the mounting port 2601. The top of the mounting port 2601 is provided with a cover plate 2602. The telescopic pipe 24 is installed at the top of the drying box 1. The top of the telescopic pipe 24 is an air inlet I 2401. The telescopic end of the telescopic pipe 24 is connected to the top of the 90° elbow 25. The connecting pipe 28 is connected to the 90° elbow 25. The air outlet pipe 29 is rotatably connected to the connecting pipe 28. An air inlet II 2901 is provided at the connection between the air outlet pipe 29 and the connecting pipe 28. Several sets of nozzles 210 are provided on the air outlet pipe 29.
[0033] Two sets of mounting shells 212 are installed on the sliding plate 26. The air outlet pipe 29 is rotatably connected to the mounting shell 212. The air outlet pipe 29 is equipped with a gear. The sliding plate 26 is equipped with an electric push rod 211. The telescopic end of the electric push rod 211 is equipped with a rack. The rack meshes with the gear. The electric push rod 211, the gear, and the rack are all located inside the mounting shell 212. One end of the rack passes through the mounting shell 212.
[0034] As described above: Motor I21 drives lead screw I22 to rotate, causing sliding plate 26 to move up and down along sliding rod 23. Bellows-style protective cover follows to protect lead screw I22. High-temperature gas enters telescopic pipe 24 from air inlet I2401, passes through 90° bend 25 and connecting pipe 28, and flows into air outlet pipe 29 from air inlet II2901. Finally, it is sprayed onto the surface of the casting by nozzle 210. At the same time, electric push rod 211 pushes rack to make nozzle 210 swing at an angle, drying the top and bottom of the casting surface and expanding the drying range. The lifting and lowering of sliding plate 26 and the angle adjustment of nozzle 210 work together to ensure that the surface of the casting is heated evenly and complete the oil baking treatment.
[0035] The clamping mechanism 3 includes a pulley 31, a sliding frame I 32, a mounting frame 33, a telescopic rod I 34, a motor II 35, a sliding frame II 36, a lead screw II 37, a rotating plate 39, a motor III 310, and a spring 313. The sliding frame I 32 is slidably mounted to the slide rail 105 via the pulley 31. The mounting frame 33 is mounted at the bottom of the sliding frame I 32. Several sets of sliding grooves 3301 are provided on the outer side of the mounting frame 33. The lead screw II 37 is rotatably mounted on the inner side of the mounting frame 33. The end passes through the mounting bracket 33 and the sliding bracket I 32. The motor II 35 is mounted on the sliding bracket I 32. The output shaft of the motor II 35 is fixedly connected to the lead screw II 37. The motor II 35 is provided with a protective shell on the outside. The motor II 35 is a forward and reverse motor. The sliding bracket II 36 is threadedly connected to the lead screw II 37. The sliding bracket II 36 is slidably connected to the mounting bracket 33 through the sliding groove 3301. The top and bottom ends of the sliding bracket II 36 are provided with bellows-type protective covers, which are fitted onto the lead screw II 37.
[0036] Both the mounting frame 33 and the sliding frame II 36 are provided with fixed shells 38. The outer side of the fixed shells 38 is provided with mounting grooves. The rotating plate 39 is rotatably connected to the fixed shells 38 through the mounting grooves. Several sets of telescopic rods I 34 are provided between the two sets of rotating plates 39. The inner side of the rotating plate 39 located on the mounting frame 33 is provided with an internal gear ring. The motor III 310 is installed on the top of the fixed shell 38 on the mounting frame 33. The outer side of the motor III 310 is provided with a protective shell. The output shaft of the motor III 310 is provided with a gear, which meshes with the internal gear ring.
[0037] Both sets of rotating plates 39 are provided with clamping blocks 311, and the two sets of clamping blocks 311 are arranged correspondingly. Two sets of telescopic rods II 314 are provided in the middle of the clamping blocks 311. Springs 313 are sleeved on the telescopic rods II 314, and clamping plates 312 are provided at the telescopic ends of the telescopic rods II 314.
[0038] The top of the clamping plate 312 is chamfered to serve as a guide. The tops of both the clamping plate 312 and the clamping block 311 are arc-shaped, which can better adapt to specific castings such as casting pots and grates.
[0039] As described above: the sliding frame I 32 slides on the slide rail 105 via pulley 31, and the motor II 35 drives the lead screw II 37 to rotate, causing the sliding frame II 36 to move up and down along the sliding groove 3301 of the mounting frame 33. While adjusting the height to accommodate castings of different sizes, the clamping block 311 stably clamps the casting pot and other castings. When clamping the grate and other castings, the grate is first inserted between the two sets of clamping plates 312 on the rotating plate 39 of the sliding frame II 36. The spring 313 is compressed, and the telescopic rod II 314 retracts, so that the two sets of clamping plates 312 on the rotating plate 39 of the sliding frame II 36 pre-clamp the grate, making it convenient for workers to place other castings. The motor III 310 starts and drives the internal gear ring to rotate through the rotating gear. Under the drive of the telescopic rod II 314, the two sets of rotating plates 39 rotate synchronously, thereby driving the castings to rotate in the drying oven 1.
[0040] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] In the description of this invention, the connection methods are divided into fixed connection and movable connection. Fixed connection methods include, but are not limited to, welding and bolting; movable connection methods include, but are not limited to, sliding connection, rotating connection and threaded connection. The connection method to achieve the desired effect should be selected according to the application of the solution.
[0042] In summary, the power systems, including but not limited to motors, electric actuators, and their respective transmission systems, are equipped with protective covers according to their actual installation locations to prevent wear or damage to the power and transmission systems caused by the external environment, thereby ensuring the normal operation of the power and transmission systems.
[0043] In summary, the electronic or electrical components, including but not limited to motors and electric actuators, are existing components that were custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this utility model.
[0044] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. An automated oil-baking surface treatment device for precision sand castings, comprising a drying box, a support frame, a collection box, a fixing frame, a slide rail, a drying mechanism, and a clamping mechanism; the drying box is mounted on the support frame, and has an inlet and an outlet at both ends of the drying box, with sealing doors on the outside of both the inlet and outlet; several sets of fixing frames are installed inside the drying box, and the slide rail is installed inside the drying box via the fixing frames; the clamping mechanism is slidably mounted inside the drying box via the slide rail, and the drying mechanism is installed on both sides of the clamping mechanism; a drain outlet is provided at the bottom of the drying box, and a collection box is installed at the bottom of the drain outlet; Its features The drying mechanism includes a motor I, a lead screw I, a telescopic tube, a 90° elbow, a sliding plate, a cover plate, a fixed plate, a connecting pipe, an air outlet pipe, a nozzle, and a mounting shell. Two sets of fixed plates are installed on both sides of the bottom of the drying chamber. The lead screw I is rotatably connected to the fixed frame and the fixed plate, with its top end passing through the top of the drying chamber. The motor I is installed on the top of the drying chamber, and its output shaft is fixedly connected to the lead screw I. Sliding rods are provided on both sides of the lead screw I, and these sliding rods are fixedly connected to the fixed frame and the fixed plate. A sliding plate is provided between the fixed frame and the fixed plate, and the sliding plate... The lead screw I is threaded and slidably connected to the sliding rod. Both ends of the sliding plate are equipped with accordion-style protective covers, which are fitted onto the lead screw I. The sliding plate has two sets of mounting ports. The 90° elbow is installed in the mounting port. The top of the mounting port is equipped with a cover plate. The telescopic pipe is installed at the top of the drying box. The top of the telescopic pipe is the air inlet I. The telescopic end of the telescopic pipe is connected to the top of the 90° elbow. The connecting pipe is connected to the 90° elbow. The air outlet pipe is rotatably connected to the connecting pipe. The connection between the air outlet pipe and the connecting pipe is equipped with an air inlet II. The air outlet pipe is equipped with several sets of nozzles. The clamping mechanism includes pulleys, a sliding frame I, a mounting frame, a telescopic rod I, a motor II, a sliding frame II, a lead screw II, a rotating plate, a motor III, and a spring. The sliding frame I is slidably mounted on the slide rail via pulleys. A mounting frame is installed at the bottom of the sliding frame I. Several sets of sliding grooves are provided on the outer side of the mounting frame. A lead screw II is rotatably mounted on the inner side of the mounting frame. The top end of the lead screw II passes through the mounting frame and the sliding frame I. The motor II is mounted on the sliding frame I. The output shaft of the motor II is fixedly connected to the lead screw II. A protective shell is provided on the outer side of the motor II. The motor II is a forward and reverse reversible motor. The sliding frame II is threadedly connected to the lead screw II. The sliding frame II is slidably connected to the mounting frame via sliding grooves. Bellows-style protective covers are provided at both the top and bottom of the sliding frame II. The bellows-style protective covers are fitted onto the lead screw II.
2. The automated oil-baking surface treatment device for precision sand castings according to claim 1, characterized in that... Two sets of mounting shells are installed on the sliding plate. The air outlet pipe is rotatably connected to the mounting shell. A gear is provided on the air outlet pipe. An electric push rod is provided on the sliding plate. A rack is provided at the telescopic end of the electric push rod. The rack meshes with the gear. The electric push rod, gear, and rack are all located inside the mounting shell. One end of the rack passes through the mounting shell.
3. The automated oil-baking surface treatment device for precision sand castings according to claim 1, characterized in that... Both the mounting frame and the sliding frame II are equipped with fixed shells. The outer side of the fixed shell is provided with a mounting groove. The rotating plate is rotatably connected to the fixed shell through the mounting groove. Several sets of telescopic rods I are provided between the two sets of rotating plates. An internal gear ring is provided on the inner side of the rotating plate located on the mounting frame. The motor III is installed on the top of the fixed shell on the mounting frame. A protective shell is provided on the outer side of the motor III. The output shaft of the motor III is provided with a gear, which meshes with the internal gear ring.
4. The automated oil-baking surface treatment device for precision sand castings according to claim 1, characterized in that... Both sets of rotating plates are equipped with clamping blocks, and the two sets of clamping blocks are set accordingly. Two sets of telescopic rods II are set in the middle of the clamping blocks. Springs are sleeved on the telescopic rods II, and clamping plates are provided at the telescopic ends of the telescopic rods II.
5. The automated oil-baking surface treatment device for precision sand castings according to claim 4, characterized in that... The top of the clamping plate is chamfered, and the tops of both the clamping plate and the clamping block are rounded.