Coating stirring equipment for coating casting sand core

Abstract

The invention discloses coating stirring equipment for casting sand core coating, which belongs to the field of sand core coating production and comprises a support, a stirring barrel arranged on the support and a stirring device for stirring coating in the stirring barrel. An input pipe for inputting paint and an output pipe for discharging the paint are arranged on the stirring barrel, and a control valve is arranged on the output pipe; the stirring device is composed of a main stirring shaft, an auxiliary stirring shaft and a power assembly, the main stirring shaft and the auxiliary stirring shaft are arranged in a 90-degree staggered mode, propeller blades are fixedly arranged on the main stirring shaft, a plurality of shearing blades are arranged on the auxiliary stirring shaft, and the power assembly drives the propeller blades and the shearing blades in different rotating directions respectively. And a mixed shearing system is formed. The device has the effect of improving the uniformity of the coating so as to improve the quality of the coating.

Description

Technical Field

[0001] The present application relates to the technical field of sand core coating production, and in particular to a coating stirring device for coating casting sand cores. Background Art

[0002] In the foundry industry, the quality of sand cores plays a critical role in the performance and precision of the final casting. Sand core coating is a crucial step in improving core quality. The right coating enhances the core's surface strength, heat resistance, and mold release properties. With the continuous advancement of casting processes, the requirements for the quality and efficiency of sand core coating are also increasing. Coating uniformity directly impacts the coating effect, making coating mixing a crucial step in ensuring coating quality. This not only affects the quality of individual castings but also significantly impacts the efficiency and cost of the entire casting process. Proper coating mixing ensures a uniform coating on the sand cores, reduces defective parts, improves production efficiency, and drives the foundry industry towards higher quality and greater profitability.

[0003] Currently, there are several common methods for stirring coatings used in casting sand core coatings. One is a simple paddle agitator, which typically consists of one or more blades mounted on a rotating shaft. A motor drives the shaft, causing the blades to stir the coating. Another method is a turbine agitator, which utilizes the high-speed rotation of the turbine to create strong suction and pressure, causing the coating to circulate within the container, achieving stirring.

[0004] However, these existing paint stirring methods have obvious defects. Whether it is a simple paddle stirrer or a turbine stirrer, they are all single-axis stirring. During single-axis stirring, the central axis position tends to form a relatively static state, which easily forms local mixing dead corners, affecting the uniformity of the paint and thus affecting the quality of the paint. Summary of the Invention

[0005] In order to improve the uniformity of the coating and thus improve the quality of the coating, the present application provides a coating stirring device for coating casting sand cores.

[0006] The present application provides a coating stirring device for casting sand core coating, which adopts the following technical solution: A paint stirring equipment for coating casting sand cores includes a bracket, a stirring barrel arranged on the bracket, and a stirring device for stirring the paint in the stirring barrel, the stirring barrel is provided with an input pipe for inputting the paint and an output pipe for discharging the paint, and the output pipe is provided with a control valve; the stirring device consists of a main stirring shaft, a secondary stirring shaft and a power assembly, the main stirring shaft and the secondary stirring shaft are arranged at 90°, the main stirring shaft is fixed with a propeller blade, and the secondary stirring shaft is provided with multiple shear blades, and the power assembly drives the propeller blades and shear blades with different rotation directions respectively to form a mixing and shearing system.

[0007] By adopting the above technical solution, after the paint enters the mixing barrel through the input pipe, when the power component starts to drive the main stirring shaft and the auxiliary stirring shaft to rotate, the two shafts are arranged orthogonally to form a "cross" structure, so that the material is subjected to axial and radial composite shear forces at the same time, thereby eliminating stirring dead corners, improving the uniformity of paint stirring, and thus improving the quality of the paint.

[0008] Preferably, when the main stirring shaft rotates clockwise, the secondary stirring shaft rotates counterclockwise, and vice versa.

[0009] By adopting the above technical solution, the double-axis counter-rotation in the mixing barrel produces a vortex counter-action effect, eliminating the dead angle caused by the concentric circle flow pattern of traditional single-axis mixing, avoiding the formation of vortex on the axis, and improving the mixing effect.

[0010] Preferably, the propeller blades include upper blades and lower blades, the upper blades are of the same diameter and are provided with arc-shaped guide grooves, and the lower blades are provided with variable diameter spiral blades, the diameter of which gradually decreases from top to bottom.

[0011] By adopting the above technical solution, the guide groove guides the fluid to flow tangentially along the blades, enhances axial and radial mixing, reduces turbulence intensity and vortex formation, improves mixing uniformity, and realizes the coordinated operation of radial and axial material transportation under the joint action of the upper and lower blades.

[0012] Preferably, the shearing blade is an eccentric three-blade structure, and a wear-resistant ceramic coating is provided on the cutting edge.

[0013] By adopting the above technical solution, the eccentric three-blade structure can increase the amplitude and produce a high-frequency micro-shear effect, thereby improving the uniformity of stirring; the casting coating usually contains high-hardness particles, which will cause wear on the blade edge during high-speed shearing, so it is coated with a wear-resistant ceramic coating to increase the service life.

[0014] Preferably, the power assembly includes a first motor and a second motor. The mixing barrel is detachably connected to a barrel cover, the first motor is fixedly mounted on the barrel cover, the main stirring shaft passes through the barrel cover and is fixedly connected to the first motor; a support plate is slidably connected to the bracket, the second motor is fixedly connected to the support plate, and the auxiliary stirring shaft passes through the side wall of the mixing barrel and is fixedly connected to the second motor.

[0015] By adopting the above technical solution, the staff drives the main stirring shaft and the auxiliary stirring shaft to rotate through the first motor and the second motor.

[0016] Preferably, a first sealing block is fixedly provided in the barrel cover, and a sealing ring is fixedly provided on the peripheral side wall of the first sealing block; a second sealing block is fixedly sleeved on the auxiliary stirring rod, a through hole for inserting the auxiliary stirring rod is opened on the side wall of the mixing barrel, the second sealing block is inserted into and abuts against the inner wall of the through hole, a sealing ring is fixedly sleeved on the second sealing block, and the sealing ring abuts against the inner wall of the through hole.

[0017] By adopting the above technical solution, the arrangement of the first sealing block, the second sealing block and the sealing ring can increase the sealing performance of the mixing barrel and avoid the possibility of paint leakage.

[0018] Preferably, scraping rods are slidably connected to the upper inner wall and the lower inner wall of the mixing barrel, the scraping rods are composed of a support rod and a rubber strip, the rubber strips are composed of a rectangular block and a triangular block, the triangular block is slidably connected to the inner wall of the mixing barrel, and the rectangular block is fixedly connected to the support rod; a rotating component for driving the scraping rod to rotate is provided in the mixing barrel.

[0019] By adopting the above technical solution, the scraper rod slides circumferentially on the inner wall of the mixing barrel, and can scrape off the paint attached to the inner wall of the mixing barrel, which is not only conducive to uniform mixing of the paint, but also reduces the subsequent cleaning work of the mixing barrel.

[0020] Preferably, the upper scraper rod is fixedly connected to a first ring, a placement groove is provided on the top inner wall of the mixing barrel, the first ring is slidably connected to the inner wall of the placement groove, and the lower scraper rod is fixedly connected to a second ring, and the second ring is slidably connected to the bottom inner wall of the mixing barrel.

[0021] By adopting the above technical solution, the first ring and the second ring maintain the axial distance between the upper scraping rod and the lower scraping rod unchanged, thereby avoiding deviation and collision with the stirring shaft during the stirring process.

[0022] Preferably, the rotating assembly includes a first connecting block, a first connecting rod, a second connecting block and a second connecting rod, the first connecting block is fixedly sleeved at the top position of the main stirring shaft, one end of the first connecting rod is connected to the first ring, and the other end is detachably connected to the first connecting block; the second connecting block is fixedly sleeved at the bottom position of the main stirring shaft, one end of the second connecting rod is connected to the second ring, and the other end is detachably connected to the second connecting block.

[0023] By adopting the above technical solution, when the main stirring shaft rotates, the first connecting block and the second connecting block thereon are driven to rotate synchronously, and the first ring and the second ring are driven to rotate under the action of the first connecting rod and the second connecting rod, so that the first scraper and the second scraper follow the main stirring shaft to slide on the inner wall of the mixing barrel.

[0024] Preferably, a connecting groove is provided on the second connecting block, and the end of the second connecting rod close to the second connecting block rotates in the connecting groove, and an extension groove is provided on the end of the second connecting rod close to the second connecting block, and a spring is provided in the extension groove, and both ends of the spring are fixedly connected to the telescopic rod, and the telescopic rod slides in the extension groove, and a socket for the telescopic rod to be plugged into is provided on the inner wall relative to the connecting groove, and an inclined surface is provided on the telescopic rod, and the inclined surface abuts against the inner wall of the connecting groove, and a pull rod is fixedly connected to the telescopic rod, and the pull rod slides on the second connecting rod.

[0025] By adopting the above technical solution, when the staff connects the second connecting rod to the second connecting block, the staff inserts the end of the second connecting rod into the connecting groove, and the side wall of the second connecting block moves into the extension groove through the compression spring of the inclined push rod telescopic rod. When the end of the second connecting rod is inserted into the connecting groove, the telescopic rod is aligned with the socket, and the telescopic rod is inserted into the socket under the push of the spring, thereby completing the connection between the second connecting rod and the second connecting block; when the scraper rod needs to be replaced, the staff drives the two pull rods to drive the two telescopic rods to move relative to the compression spring, so that the telescopic rod is disengaged from the socket, and then separates the second connecting block and the second connecting rod, and replaces the new scraper rod.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. After the paint enters the mixing barrel through the inlet pipe, the power assembly starts to drive the main stirring shaft and the auxiliary stirring shaft to rotate. The two shafts are arranged orthogonally to form a "cross" structure, so that the material is subjected to axial and radial composite shear forces at the same time, thereby eliminating the mixing dead angle, improving the uniformity of the paint mixing, and thus improving the quality of the paint; 2. The dual-shaft counter-rotation in the mixing barrel creates a vortex counteraction effect, eliminating the dead angles created by the concentric circle flow pattern of traditional single-shaft mixing, preventing vortex formation along the axis, and improving the mixing effect. 3. The guide groove guides the fluid to flow tangentially along the blades, thereby enhancing axial and radial mixing, reducing turbulence intensity and vortex formation, and improving mixing uniformity. The upper and lower blades work together to achieve coordinated radial and axial material transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the front structure of the mixing barrel in this embodiment.

[0028] Figure 2 Schematic diagram of the cross-sectional structure of the mixing barrel in this embodiment.

[0029] Figure 3 Schematic diagram of the structure of the protruding screw rod in this embodiment.

[0030] Figure 4 2 is a schematic structural diagram of the protruding scraper rod in this embodiment.

[0031] Figure 5 2 is a schematic structural diagram of the protruding telescopic rod in this embodiment.

[0032] Description of reference numerals: 1. Bracket; 2. Mixing drum; 3. Mixing device; 4. Output pipe; 5. Input pipe; 6. Control valve; 7. Main mixing shaft; 8. Secondary mixing shaft; 9. Power assembly; 10. Propeller blades; 11. Upper blades; 12. Lower blades; 13. Diversion trough; 14. Shear blades; 15. First motor; 16. Second motor; 17. Drum cover; 18. Support plate; 19. First sealing block; 20. Second sealing block; 21. Sealing ring; 22. Through hole; 23. Scraper rod; 24 , rectangular block; 25, triangular block; 26, rotating assembly; 27, first ring; 28, placement groove; 29, second ring; 30, first connecting block; 31, first connecting rod; 32, second connecting block; 33, second connecting rod; 34, connecting groove; 35, spring; 36, telescopic rod; 37, telescopic groove; 38, jack; 39, inclined plane; 40, pull rod; 41, third motor; 42, screw rod; 43, guide rod; 44, slide groove; 45, guide groove; 46, fixed block. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The present application embodiment discloses a coating stirring device for coating casting sand cores, such as Figure 1As shown, it includes a bracket 1, a mixing barrel 2 mounted on the bracket 1, and a stirring device 3 for stirring the paint in the mixing barrel 2. The bottom of the mixing barrel 2 is conical, and the lowest end is connected to an output pipe 4. The highest point of the cone at the bottom of the mixing barrel 2 abuts the placement hole, and a control valve 6 is provided on the output pipe 4. The top of the mixing barrel 2 is detachably connected to a barrel cover 17, and the barrel cover 17 is provided with an input pipe 5. The input pipe 5 is bucket-shaped to facilitate the entry of materials.

[0035] like Figure 2 As shown, the stirring device 3 is composed of a main stirring shaft 7, a secondary stirring shaft 8 and a power assembly 9. The main stirring shaft 7 rotates vertically in the stirring barrel 2, and the secondary stirring shaft 8 rotates horizontally in the stirring barrel 2. The main stirring shaft 7 and the secondary stirring shaft 8 are staggered at 90 degrees and do not touch each other. The secondary stirring shaft 8 deviates from the center position for stirring. A propeller blade 10 is fixedly welded to the main stirring shaft 7. The propeller blade 10 includes an upper blade 11 and a lower blade 12. The upper blade 11 is a spiral blade with the same diameter, and the lower blade 12 is set as a variable diameter spiral blade. The diameter of the upper blade 11 is larger than the diameter of the lower blade 12. The large diameter setting of the upper blade 11 can push the material downward during the stirring process, forming a strong axial conveying flow. The diameter of the lower blades 12 gradually decreases from vertical to downward. The pitch of the spiral blades at the smaller diameter end is smaller, resulting in a higher linear velocity during rotation. This creates a strong radial shear force and local turbulence at the blade tip. The high linear velocity area at the smaller diameter end forms a speed difference with the lower velocity area at the adjacent larger diameter end, resulting in a sudden shear rate change and enhancing the mixing effect. Multiple shear blades 14 are provided on the secondary stirring shaft 8. The shear blades 14 have an eccentric three-blade structure. This eccentric three-blade structure can increase the amplitude and produce a high-frequency micro-shear effect, thereby improving the mixing uniformity. The wear-resistant ceramic coating on the blade edge can extend the service life of the blade.

[0036] like Figure 2 As shown, a guide groove 13 is provided on the upper blade 11. The cross-section of the guide groove 13 is semicircular. The guide groove 13 is divided into multiple sections. The groove opening is at an angle of 15° to the direction of rotation. The guide groove 13 guides the fluid to flow tangentially along the blade, enhances axial and radial mixing, reduces turbulence intensity and vortex formation, and improves stirring uniformity.

[0037] like Figure 2 and Figure 3As shown, the power assembly 9 includes a first motor 15 and a second motor 16. The first motor 15 is fixedly mounted on the upper end surface of the barrel cover 17. The main stirring shaft 7 is arranged in a vertical direction, and the top of the main stirring shaft 7 passes through the barrel cover 17 and is fixedly welded to the first motor 15. A fixed block 46 is fixedly welded to the bracket 1, and a support plate 18 is slidably connected to the fixed block 46 in the horizontal direction. The second motor 16 is fixedly mounted on the support plate 18. The auxiliary stirring shaft 8 passes horizontally through the mixing barrel 2 and is fixedly connected to the second motor 16. A slide 44 and a guide groove 45 are opened in the horizontal direction on the fixed block 46. A screw rod 42 is rotatably connected in the slide 44, and a guide rod 43 is fixedly connected in the guide groove 45. A third motor 41 that drives the screw rod 42 to rotate is fixedly mounted on the fixed side wall. The support plate 18 is threadedly connected to the screw rod 42, and the support plate 18 slides on the guide rod 43. During the stirring operation, the first motor 15 and the second motor 16 respectively drive the main stirring shaft 7 and the auxiliary stirring shaft 8 to rotate in different directions. When the main stirring shaft 7 rotates clockwise, the auxiliary stirring shaft 8 rotates counterclockwise, and vice versa. The reverse rotation of the main stirring shaft 7 and the auxiliary stirring shaft 8 can produce a vortex counter-action effect, forming a mixing shear system, eliminating the dead angle caused by the concentric circle flow mode of traditional single-axis stirring, avoiding the formation of vortexes on the axis, and improving the stirring effect.

[0038] like Figure 2 and Figure 3 As shown, the lower end of the drum lid 17 contains a first sealing block 19, with a sealing ring 21 fixedly mounted on the sidewall of the first sealing block 19. A second sealing block 20 is fixedly mounted near the secondary stirring rod near the second motor 16. The second sealing block 20 is cylindrical and horizontally arranged. A through hole 22 is provided in the sidewall of the mixing drum 2 for the secondary stirring rod to be inserted. The second sealing block 20 is inserted into and abuts the inner wall of the through hole 22. A sealing ring 21 is fixedly mounted on the second sealing block 20 and abuts the inner wall of the through hole 22. The arrangement of the sealing block and sealing ring 21 enhances the sealing of the mixing drum 2 and prevents paint leakage. When the mixing drum 2 needs to be cleaned, the staff can open the drum lid 17 and remove the main stirring shaft 7. Then, the staff can drive the third motor 41, via the screw 42, to drive the support plate 18, which drives the second motor 16 away from the mixing drum 2, thereby removing the secondary stirring shaft 8. At this point, the staff can remove the mixing drum from the bracket 1 for cleaning. The staff can clean the mixing barrel 2 by injecting water through the input pipe 5 without removing the mixing device 3 , and the staff can make the choice freely.

[0039] like Figure 2 and Figure 4As shown, scrapers 23 are slidably connected to the upper inner wall and the lower inner wall of the mixing barrel 2, and the upper and lower layers of the mixing barrel 2 are separated by the position of the auxiliary stirring shaft 8. The scraper 23 is composed of a support rod and a rubber strip. The rubber strip is composed of a rectangular block 24 and a triangular block 25. The triangular block 25 is slidably connected to the inner wall of the mixing barrel 2, and the rectangular block 24 is fixedly connected to the support rod. The triangular design of the rubber strip not only increases the effect of stirring and scraping, but also avoids damage to the inner wall of the mixing shaft. The upper scraper is in the shape of a rectangular parallelepiped, with a first circular ring 27 fixedly welded to its top. The lower scraper is bent, and a second circular ring 29 is fixedly welded to its bend. A placement groove 28 is provided on the top of the mixing barrel 2 in the vertical direction. The lower end face of the first circular ring 27 abuts against the bottom inner wall of the placement groove 28. The first sealing cover on the barrel cover 17 is inserted into the placement groove 28 and does not contact the first circular ring 27. A cone-shaped structure for conveying paint is provided at the bottom of the mixing barrel 2. The lower scraper 23 includes a scraper bar 1 vertically arranged to slide on the side wall of the mixing barrel 2 and a scraper bar 2 inclined to slide and connect to the bottom conical surface. The side wall of the second ring 29 abuts against the top inner wall of the inner cylindrical wall at the bottom of the mixing barrel 2. Scraper bar 1 is fixedly welded to the upper end face of the second ring 29, and scraper bar 2 is fixedly welded to the lower end face of the second ring 29. The first ring 27 and the second ring 29 respectively limit the axial positions of the two scrapers 23 to prevent the scrapers 23 from touching the main stirring shaft 7.

[0040] like Figure 2 and Figure 5 As shown, a rotating assembly 26 for driving the scraper 23 to rotate is provided in the mixing barrel 2. The rotating assembly 26 includes a first connecting block 30, a first connecting rod 31, a second connecting block 32, and a second connecting rod 33. The first connecting block 30 is fixedly mounted on the top peripheral side wall of the main mixing shaft 7. One end of the first connecting rod 31 is connected to the side wall of the upper scraper 23, and the other end is detachably connected to the first connecting block 30. The second connecting block 32 is fixedly mounted on the bottom position of the main mixing shaft 7. One end of the second connecting rod 33 is connected to the second ring 29, and the other end is detachably connected to the second connecting block 32. The first connecting rod 31 and the second connecting rod 33 have the same structure and the same connection method. Taking the connection between the second connecting rod 33 and the second connecting block 32 as an example, the second connecting block 32 is provided with a connecting slot 34. Telescopic rods 36 are provided on both sides of the end of the second connecting rod 33 near the second connecting block 32. A telescopic slot 37 is provided on the sidewall of the end of the second connecting rod 33 along its width. A spring 35 is provided in the telescopic slot 37. The ends of the spring 35 are respectively fixedly welded to the two telescopic rods 36, and the telescopic rods 36 slide within the telescopic slot 37. A sloped surface 39 is provided on the side of the telescopic rod 36 near the second connecting block 32, which abuts the second connecting block 32. A socket 38 for the telescopic rod 36 to plug into is provided on the inner wall opposite the connecting slot 34. A pull rod 40 is fixedly welded to the telescopic rod 36, and the pull rod 40 slides on the second connecting rod 33.

[0041] like Figure 2 and Figure 5 As shown, when the main stirring shaft 7 rotates, the first connecting block 30 and the second connecting block 32 thereon are driven to rotate synchronously, and the first connecting rod 31 and the second connecting rod 33 drive the first circular ring 27 and the second circular ring 29 to rotate, so that the first scraper and the second scraper follow the main stirring shaft 7 to slide on the inner wall of the stirring barrel 2. The scraper 23 slides circumferentially on the inner wall of the stirring barrel 2, and can scrape off the paint attached to the inner wall of the stirring barrel 2, which is not only conducive to the uniform mixing of the paint, but also reduces the subsequent cleaning of the stirring barrel 2. When the staff opens the barrel cover 17 to remove the main stirring shaft 7, the scraper 23, the first circular ring 27, the second circular ring 29, the second connecting rod 33 and the first connection are all removed along with the main stirring shaft 7. At this time, the staff can remove the second connection and the second connecting block 32 for cleaning or replacement. When the staff member disconnects the second connecting rod 33 from the second connecting block 32, the staff member drives the two pull rods 40 to move relative to each other, causing the two telescopic rods 36 to move relative to the compression spring 35. When the telescopic rods 36 are released from the sockets 38, the first connecting rod 31 is removed from the connecting slot 34. When the staff member connects the second connecting rod 33 to the second connecting block 32, the inclined surface 39 on the telescopic rod 36 abuts against the second connecting block 32, pushing the two telescopic rods 36 to move relative to each other, compressing the spring 35. As a result, the telescopic rods 36 are pushed into the telescopic slot 37, and the second connecting rod 33 is inserted into the connecting slot 34. At this time, the telescopic rod 36 is aligned with the socket 38 and, pushed by the spring 35, is inserted into the socket 38, completing the connection.

[0042] The implementation principle of the embodiment of the present application is: after the paint enters the mixing barrel 2 through the input pipe 5, when the power component 9 starts to drive the main stirring shaft 7 and the auxiliary stirring shaft 8 to rotate in opposite directions, the two shafts are arranged orthogonally to form a "cross" structure, so that the material is subjected to a composite shear force in the axial and radial directions at the same time, thereby eliminating the mixing dead angle, improving the uniformity of the paint mixing, and thus improving the quality of the paint.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A coating stirring device for coating casting sand cores, characterized by: The invention comprises a support (1), a stirring barrel (2) arranged on the support (1), and a stirring device (3) for stirring the paint in the stirring barrel (2); the stirring barrel (2) is provided with an input pipe (5) for inputting the paint and an output pipe (4) for discharging the paint; the output pipe (4) is provided with a control valve (6); the stirring device (3) is composed of a main stirring shaft (7), a secondary stirring shaft (8), and a power assembly (9); the main stirring shaft (7) and the secondary stirring shaft (8) are arranged at 90 degrees in a staggered manner; a propeller blade (10) is fixedly provided on the main stirring shaft (7); a plurality of shear blades (14) are provided on the secondary stirring shaft (8); the power assembly (9) drives the propeller blades (10) and the shear blades (14) of different rotation directions respectively, so as to form a mixing and shearing system.

2. The coating stirring device for casting sand core coating according to claim 1, characterized in that: When the main stirring shaft (7) rotates clockwise, the auxiliary stirring shaft (8) rotates counterclockwise, and vice versa.

3. The coating stirring device for coating casting sand cores according to claim 1, characterized in that: The propeller blades (10) include upper blades (11) and lower blades (12). The upper blades (11) are of the same diameter and are provided with arc-shaped guide grooves (13). The lower blades (12) are provided with variable diameter spiral blades, the diameter of which gradually decreases from top to bottom.

4. The coating stirring device for casting sand core coating according to claim 1, characterized in that: The shearing blade (14) is an eccentric three-edged structure, and a wear-resistant ceramic coating is provided on the cutting edge.

5. The coating stirring device for coating casting sand cores according to claim 1, characterized in that: The power assembly (9) comprises a first motor (15) and a second motor (16); a barrel cover (17) is detachably connected to the mixing barrel (2); the first motor (15) is fixedly mounted on the barrel cover (17); the main mixing shaft (7) passes through the barrel cover (17) and is fixedly connected to the first motor (15); a support plate (18) is slidably connected to the bracket (1); the second motor (16) is fixedly connected to the support plate (18); the auxiliary mixing shaft (8) passes through the side wall of the mixing barrel (2) and is fixedly connected to the second motor (16).

6. The coating stirring device for coating casting sand cores according to claim 5, characterized in that: A first sealing block (19) is fixedly provided in the barrel cover (17), and a sealing ring (21) is fixedly provided on the peripheral side wall of the first sealing block (19); a second sealing block (20) is fixedly sleeved on the auxiliary stirring rod, a through hole (22) for inserting the auxiliary stirring rod is opened on the side wall of the mixing barrel (2), the second sealing block (20) is inserted into and abuts against the inner wall of the through hole (22), and a sealing ring (21) is fixedly sleeved on the second sealing block (20), and the sealing ring (21) abuts against the inner wall of the through hole (22).

7. The coating stirring device for casting sand core coating according to claim 1, characterized in that: The upper inner wall and the lower inner wall of the mixing barrel (2) are both slidably connected to a scraper rod (23), the scraper rod (23) is composed of a support rod and a rubber strip, the rubber strip is composed of a rectangular block (24) and a triangular block (25), the triangular block (25) is slidably connected to the inner wall of the mixing barrel (2), and the rectangular block (24) is fixedly connected to the support rod; a rotating assembly (26) for driving the scraper rod (23) to rotate is provided in the mixing barrel (2).

8. The coating stirring device for coating casting sand cores according to claim 7, characterized in that: The upper scraper (23) is fixedly connected to a first circular ring (27), the top inner wall of the mixing barrel (2) is provided with a placement groove (28), the first circular ring (27) is slidably connected to the inner wall of the placement groove (28), and the lower scraper (23) is fixedly connected to a second circular ring (29), and the second circular ring (29) is slidably connected to the inner wall of the mixing barrel (2).

9. The coating stirring device for casting sand core coating according to claim 8, characterized in that: The rotating assembly (26) includes a first connecting block (30), a first connecting rod (31), a second connecting block (32) and a second connecting rod (33), wherein the first connecting block (30) is fixedly sleeved on the top position of the main stirring shaft (7), one end of the first connecting rod (31) is connected to the side wall of the upper scraper rod (23), and the other end is detachably connected to the first connecting block (30); the second connecting block (32) is fixedly sleeved on the bottom position of the main stirring shaft (7), one end of the second connecting rod (33) is connected to the second ring (29), and the other end is detachably connected to the second connecting block (32).

10. The coating stirring device for coating casting sand cores according to claim 9, characterized in that: The second connecting block (32) is provided with a connecting groove (34), and one end of the second connecting rod (33) close to the second connecting block (32) rotates in the connecting groove (34). The second connecting rod (33) is provided with an extension groove at one end close to the second connecting block (32), and a spring (35) is provided in the extension groove. The two ends of the spring (35) are respectively fixedly connected with a telescopic rod (36), and the telescopic rod (36) slides in the extension groove. The inner wall relative to the connecting groove (34) is provided with a socket (38) for the telescopic rod (36) to be plugged in. The telescopic rod (36) is provided with an inclined surface (39), and the inclined surface (39) abuts against the inner wall of the connecting groove (34). A pull rod (40) is fixedly connected to the telescopic rod (36), and the pull rod (40) slides on the second connecting rod (33).

Images