Multifunctional dipping device for foundry sand core coating

Abstract

This invention discloses a multifunctional dip-coating device for casting sand core coating, comprising an open tank, a liquid-separating plate detachably inserted into the open tank, and the liquid-separating plate separating the open tank into a coating pool for dip-coating casting sand cores and a filter pool for flow-coating casting sand cores. A feeding mechanism for conveying coating into the coating pool is provided on one side of the open tank, and a conveying mechanism for pumping the coating in the coating pool to flow onto the casting sand core is provided above the coating pool. This invention separates the open tank into a coating pool and a filter pool by the liquid-separating plate in the open tank, which can perform flow-coating or dip-coating treatment on casting sand cores, is convenient to use, and has high sand core coating efficiency.

Description

Technical Field

[0001] This invention relates to the field of casting sand core production technology, and in particular to a multifunctional dip-coating device for casting sand core coating. Background Technology

[0002] In the casting process, a sand core is a sand mold used to create cavities or internal structures, serving to support and position the molten metal during casting. To improve the performance and refractoriness of sand cores, a special coating is usually applied to their surface, which requires the use of a coating device.

[0003] However, the coating devices used for sand core processing in related technologies can only perform flow coating on the surface of casting sand cores, and cannot simultaneously meet the coating requirements of dip coating, resulting in inconvenience in use. Summary of the Invention

[0004] To address the technical problems mentioned in the background section, this invention provides a multifunctional dip-coating device for casting sand core coating.

[0005] The present invention is achieved by the following technical solution: a multifunctional dip coating device for casting sand core coating, comprising an open tank, wherein a liquid separator is detachably inserted in the open tank, and the liquid separator separates the open tank into a coating pool for dip coating casting sand core and a filter pool for flow coating casting sand core. A feeding mechanism for conveying coating into the coating pool is provided on one side of the open tank, and a conveying mechanism for pumping the coating in the coating pool to flow the coating onto the casting sand core is provided above the coating pool.

[0006] As a further improvement to the above solution, the feeding mechanism includes a premixing cylinder disposed on one side of the outer wall of the open tank, a premixing pump installed on the top of the premixing cylinder, a first stirring paddle inside the premixing cylinder, the top of the first stirring paddle being connected to the output end of the bottom of the premixing pump, and an adjustable discharge valve disposed on one side of the premixing cylinder, the discharge valve being connected to the paint tank through a pipeline.

[0007] As a further improvement to the above solution, the material conveying mechanism includes a stirring frame installed at the top of the open trough, a liquid pump installed on the stirring frame, the input end of the liquid pump being connected to the paint tank, and the output end of the liquid pump being connected to a nozzle located above the filter tank via a pipe.

[0008] As a further improvement to the above solution, a stirring pump is installed on the stirring rack, and a second stirring paddle that extends into the paint tank is installed at the output end of the bottom of the stirring pump.

[0009] As a further improvement to the above solution, a first slot and a second slot are respectively provided in the open groove along its length direction. The first slot and the second slot are both parallel to the width direction of the open groove and can be sealed and inserted into the liquid separator.

[0010] As a further improvement to the above solution, when the liquid separator is inserted into the first slot, a filter screen is laid inside the filter pool.

[0011] As a further improvement to the above solution, a pneumatic diaphragm pump is installed on one side of the open trough. The input end of the pneumatic diaphragm pump is connected to the filter tank through a pipe and is located below the filter screen. The output end of the pneumatic diaphragm pump is connected to the inside of the paint tank through a pipe.

[0012] As a further improvement to the above solution, two pairs of support plates are arranged opposite each other on both sides of the open groove near the first slot. A positioning post is provided on the top of the support plate. The filter screen has a through hole through which the positioning post can pass. A horizontal arm parallel to the length direction of the open groove is detachably provided on the liquid separator plate. A positioning hole is provided on the horizontal arm for the positioning post to pass through and be inserted.

[0013] As a further improvement to the above solution, a limiting groove is provided on the liquid separator plate, a limiting block that can move up and down is provided in the limiting groove, a circular groove is provided on the limiting block, a rotating block is rotatably provided in the circular groove, a docking block is provided on the rotating block, and a docking groove that engages with the docking block is provided on the end of the cross arm.

[0014] As a further improvement to the above scheme, the maximum rotation angle of the rotating block is ninety degrees.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The multifunctional dip-coating device for casting sand core coating of the present invention isolates the open tank into a coating pool and a filter pool by a liquid-separating plate set in the open tank, which can perform flow coating or dip coating treatment on casting sand cores. It is convenient to use and has high sand core coating efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the overall structure of the middle section;

[0019] Figure 3 for Figure 1 A side view of the overall structure.

[0020] Figure 4 for Figure 1 A top view of the overall structure.

[0021] Figure 5 for Figure 1 A partial side view sectional diagram of the liquid separator and filter screen in an assembled state in an open tank;

[0022] Figure 6 for Figure 5 Enlarged structural diagram at point A;

[0023] Figure 7 for Figure 5 A partial top-view cross-sectional view of the middle cross arm in its assembled state on the limiting block of the liquid separator.

[0024] Figure 8 for Figure 7 Enlarged structural diagram at point B;

[0025] Figure 9 for Figure 5 A cross-sectional view of the first slot on the open slot in an unassembled state;

[0026] Figure 10 for Figure 5 A schematic diagram of the liquid separator plate in its unassembled state;

[0027] Figure 11 for Figure 5 A schematic diagram of the structure when the middle filter screen is pre-positioned on the support plate inside the open slot;

[0028] Figure 12 for Figure 5 A schematic diagram of the middle cross arm in its unassembled state;

[0029] Figure 13 for Figure 5 A partial cross-sectional view of the middle cross arm in its assembled state.

[0030] Explanation of key symbols:

[0031] 1. Open tank; 101. First slot; 102. Second slot; 103. Paint tank; 104. Filter tank; 2. Filter screen; 3. Premixing cylinder; 4. Stirring rack; 5. Liquid separator; 6. Pneumatic diaphragm pump; 7. Premixing pump; 8. Stirring pump; 9. Liquid pump; 10. Support plate; 11. Positioning post; 12. Cross arm; 13. Positioning hole; 14. Limiting groove; 15. Limiting block; 16. Circular groove ; 17. Rotating block; 18. Connecting block; 19. Connecting groove; 20. Bearing rod; 21. Slope; 22. Transmission rod; 23. First inclined groove; 24. First locking block; 25. Second inclined groove; 26. First locking slot; 27. Second locking block; 28. Second locking slot; 29. ​​Rotating handle; 30. Connecting rod; 31. First bevel tooth; 32. Second bevel tooth; 33. Cylinder; 34. Locking rod; 35. Locking hole. Detailed Implementation

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] Example 1

[0034] Please combine Figures 1 to 4 A multi-functional dip coating device for casting sand core coating includes an open tank 1. A liquid separator 5 is detachably inserted into the open tank 1, and the liquid separator 5 separates the open tank 1 into a coating pool 103 for dip coating of casting sand core and a filter pool 104 for flow coating of casting sand core. A feeding mechanism is provided on one side of the open tank 1 to deliver coating into the coating pool 103. A conveying mechanism is provided above the coating pool 103 to pump the coating in the pool and make the coating flow to the top of the casting sand core.

[0035] Therefore, the multifunctional dip-coating device of this embodiment can not only perform dip-coating treatment on casting sand cores, but also perform flow coating treatment on casting sand cores, which is convenient and efficient.

[0036] The feeding mechanism includes a premixing cylinder 3 located on one side of the outer wall of the open tank 1. A premixing pump 7 is installed on the top of the premixing cylinder 3. The premixing cylinder 3 has a first stirring paddle (not shown in the figure). The top of the first stirring paddle is connected to the output end of the bottom of the premixing pump 7. An adjustable discharge valve (not shown) is provided on one side of the premixing cylinder 3. The discharge valve is connected to the paint tank 103 through a pipeline.

[0037] The paint in the paint tank 103 can be replenished through the premixing cylinder 3 via the external valve, meaning that paint liquid can be added to the paint tank 103 at any time when the paint liquid level is below the standard line. The premixing pump 7 drives the first stirring paddle to premix the paint liquid in the premixing cylinder 3.

[0038] The material conveying mechanism includes a mixing frame 4 installed on the top of the opening of the open trough 1. The mixing frame 4 is movably installed on the open trough 1 via a slide rail so that the mixing frame 4 can move in the length direction of the open trough 1.

[0039] A liquid pump 9 is installed on the mixing rack 4. The input end of the liquid pump 9 is connected to the paint tank 103, and the output end of the liquid pump 9 is connected to a nozzle (not shown) located above the filter tank 104 through a pipe, so that the paint can be sent out from above the casting sand core and flowed evenly and controllably onto the suspended casting sand core.

[0040] A stirring pump 8 is installed on the stirring rack 4. A second stirring paddle (not shown) is installed at the bottom output end of the stirring pump 8, which extends into the paint tank 103. This can prevent the paint liquid from settling and affecting the paint's effect, and ensure that the paint liquid in the paint tank 103 is uniform through thorough stirring.

[0041] The open groove 1 has a first slot 101 and a second slot 102 respectively opened in its length direction. The first slot 101 and the second slot 102 are both parallel to the width direction of the open groove 1 and can be sealed and inserted into the liquid separator 5.

[0042] In this embodiment, the edge of the liquid separator 5 is fitted with a rubber seal. When flow coating is required, the liquid separator 5 is placed in the first slot 101. At this time, the paint tank 103 is small and only serves to provide paint liquid. When dip coating is required, the liquid separator 5 is placed in the second slot 102. At this time, the filter tank 104 is small and the paint tank 103 is large. The paint liquid is filled, and the sand core can be suspended in the paint tank 103 for dip coating treatment.

[0043] Furthermore, when the liquid separator 5 is inserted into the first slot 101, the filter tank 104 is lined with a filter screen 2, which can filter the remaining paint liquid that falls into the filter tank 104 after the coating is applied, remove impurities, and make it recyclable.

[0044] A pneumatic diaphragm pump 6 is installed on one side of the open tank 1. The input end of the pneumatic diaphragm pump 6 is connected to the filter tank 104 through a pipe and is located below the filter screen 2. The output end of the pneumatic diaphragm pump 6 is connected to the inside of the paint tank 103 through a pipe. The paint liquid in the filter tank 104 can be pumped into the paint tank 103 by gas pressure to achieve a complete cycle.

[0045] The working principle of this embodiment:

[0046] The raw materials for the coating are added to the premixing cylinder 3, water is added, and the switch is turned on. The premixing pump 7 stirs the coating liquid at regular intervals. An adjustable external discharge valve is provided at the bottom of the premixing cylinder 3. After the coating liquid is premixed, the external discharge valve is opened, and the coating liquid flows into the coating tank 103. A movable stirring rack 4 is placed above the coating tank 103. A liquid pump 9 is installed on the side of the stirring rack 4. The casting sand core is suspended above the filter tank 104. After the liquid pump 9 extracts the coating liquid, it is evenly sprayed onto the casting sand core. A replaceable filter screen 2 is placed at the bottom of the filter tank 104. After the sprayed coating liquid is filtered by the filter screen 2, it is pumped back into the coating tank 103 by the pneumatic diaphragm pump 6 to achieve a complete cycle.

[0047] Specifically, the paint tank 103 and the filter tank 104 are separated by a removable baffle plate 5. A first slot 101 and a second slot 102 are provided at the bottom of the open tank 1, and the baffle plate 5 is fitted with a rubber seal at its edge. When flow coating is required, the baffle plate 5 is positioned in the first slot 101, at which point the paint tank 103 is smaller and only serves to provide the paint solution. When dip coating is required, the baffle plate 5 is positioned in the second slot 102, at which point the filter tank 104 is smaller, the paint tank 103 is larger, and the paint solution is filled to the baffle plate, allowing the sand core to be suspended and placed within the paint tank 103 for dip coating.

[0048] Example 2

[0049] Please combine Figures 5 to 13 This embodiment is an improvement on embodiment 1. Two pairs of support plates 10 are arranged opposite each other on both sides of the open groove 1 near the first slot 101. A positioning post 11 is provided on the top of the support plate 10. The filter screen 2 has a through hole through which the positioning post 11 can pass. A horizontal arm 12 parallel to the length direction of the open groove 1 is detachably provided on the liquid separator 5. A positioning hole 13 is provided on the horizontal arm 12 for the positioning post 11 to be inserted through.

[0050] A limiting groove 14 is provided on the liquid separator 5. A limiting block 15 that can move up and down is provided in the limiting groove 14. A circular groove 16 is provided on the limiting block 15. A rotating block 17 is rotatably provided in the circular groove 16. A docking block 18 is provided on the rotating block 17. A docking groove 19 that engages with the docking block 18 is provided at the end of the cross arm 12.

[0051] The maximum rotation angle of rotating block 17 is ninety degrees.

[0052] Before the casting sand core is required, the filter screen 2 is placed on the support plate 10 through the positioning post 11 and the perforation to complete the pre-positioning of the filter screen 2 in the open groove 1. Then, the horizontal arm 12 is inserted into the docking block 18 on the rotating block 17 through the docking groove 19 to complete the fixation of the horizontal arm 12 on the liquid-separating plate 5. Then, the horizontal arm 12 and the rotating block 17 are rotated 90 degrees relative to the circular groove 16, so that the axial direction of the positioning hole 13 is rotated from horizontal to vertical. Then, the limiting block 15 is moved down in the limiting groove 14 so that the top of the positioning post 11 passes through the positioning hole 13 on the horizontal arm 12, so that the filter screen 2, the liquid-separating plate 5 and the open groove 1 form a whole, and the filter screen 2 is effectively fixed in the open groove 1 and the liquid-separating plate 5 is effectively fixed in the first slot 101 of the open groove 1.

[0053] Furthermore, a pressure rod 20 is radially inserted into the outer side of the rotating block 17. A slope 21 is provided in the circular groove 16 to slide and press against the centrifugal end of the pressure rod 20. A transmission rod 22 is axially inserted into the rotating block 17. A first inclined groove 23 is provided on the transmission rod 22, allowing the pressure rod 20 to slide and press through after contact with its centripetal end. A first locking block 24 is radially inserted into the docking block 18. A second inclined groove 25 is provided on the first locking block 24, allowing the transmission rod 22 to slide and press through after contact. A first locking groove 26 is provided in the docking groove 19 to engage with the first locking block 24. A gasket is provided in the docking block 18, and a first spring (not shown) is provided between the gasket and the first locking block 24.

[0054] After the cross arm 12 is fixed on the rotating block 17 via the docking groove 19 and the docking block 18, when the rotating block 17 is rotated 90 degrees, the centrifugal end of the pressure rod 20 will contact the slope 21, and the slope 21 will slide and squeeze, forcing the centripetal end of the pressure rod 20 to touch the first inclined groove 23, causing the transmission rod 22 to touch the second inclined groove 25, and causing the first locking block 24 to be locked into the first locking groove 26 (the first spring is stretched and deformed), thus completing the locking and fixing of the cross arm 12 on the rotating block 17, which is stable and reliable.

[0055] Furthermore, a connecting rod 30 is rotatably inserted into the cross arm 12. One end of the connecting rod 30 is provided with a handle 29, and the other end of the connecting rod 30 extends into the cross arm 12 and is fixed with a first bevel tooth 31. A second bevel tooth 32 is provided inside the cross arm 12, and the second bevel tooth 32 meshes with the first bevel tooth 31. A cylinder 33 is coaxially fixed on the second bevel tooth 32, and a locking rod 34 is threaded into the cylinder 33. A sliding groove (not shown) is opened inside the cross arm 12, and a slider (not shown) is slidably engaged in the sliding groove. The slider is sleeved and fixed on the outer wall of the locking rod 34. A locking hole 35 is opened on the outer wall of the positioning post 11 to engage with the locking rod 34.

[0056] When the positioning pin 11 passes through the positioning hole 13 of the cross arm 12, the connecting rod 30, the first bevel tooth 31, the second bevel tooth 32, and the cylinder 33 are rotated synchronously by the rotating handle 29, so that the cylinder 33 and the locking rod 34 are engaged with each other by threads. Under the limiting action of the slider and the sliding groove, the locking rod 34 extends axially out of the cylinder 33 and is locked into the locking hole 35, thereby locking the positioning pin 11 in the positioning hole 13. This completes the effective and stable fixation of the filter screen 2 and the liquid separator 5 in the open groove 1, while also making disassembly and assembly convenient.

[0057] In addition, a second locking block 27 is radially elastically inserted into the rotating block 17. The second locking block 27 is located on the side of the rotating block 17 away from the pressure rod 20. The second locking block 27 and the rotating block 17 are connected by a second spring. A second locking groove 28 is opened on the circular groove 16 to engage with the second locking block 27.

[0058] When the rotating block 17 rotates, the second locking block 27 will also engage in the second locking slot 28, which can keep the rotating block 17 stable after rotation. The second locking slot 28 has an inclined surface, which makes it easier for the second locking block 27 to disengage from the second locking slot 28 when the rotating block 17 rotates in the opposite direction.

[0059] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A multifunctional dip-coating device for casting sand core coating, characterized in that, The system includes an open trough, in which a liquid-separating plate is detachably inserted. The liquid-separating plate separates the contents of the open trough into a paint pool for impregnating casting sand cores and a filter pool for flow coating casting sand cores. A feeding mechanism for conveying paint into the paint pool is provided on one side of the open trough, and a conveying mechanism for pumping the paint in the paint pool to flow onto the casting sand cores is provided above the paint pool. The open groove has a first slot and a second slot respectively opened in its length direction. The first slot and the second slot are both parallel to the width direction of the open groove and can be sealed and inserted into the liquid-separating plate. When the liquid separator is inserted into the first slot, a filter screen is laid inside the filter tank; Two pairs of support plates are arranged opposite each other on both sides of the open slot near the first slot. A positioning post is provided on the top of the support plate. The filter screen has a through hole through which the positioning post can pass. A horizontal arm parallel to the length direction of the open slot is detachably provided on the liquid separator. A positioning hole is provided on the horizontal arm for the positioning post to be inserted through. The liquid separator plate has a limiting groove, and a limiting block that can move up and down is provided in the limiting groove. A circular groove is provided on the limiting block, and a rotating block is rotatably provided in the circular groove. A docking block is provided on the rotating block, and a docking groove that engages with the docking block is provided on the end of the cross arm.

2. The multifunctional dip-coating device for casting sand core coating as described in claim 1, characterized in that, The feeding mechanism includes a premixing cylinder disposed on one side of the outer wall of the open tank. A premixing pump is installed on the top of the premixing cylinder. The premixing cylinder has a first stirring paddle inside. The top of the first stirring paddle is connected to the output end of the bottom of the premixing pump. An adjustable discharge valve is disposed on one side of the premixing cylinder. The discharge valve is connected to the paint tank through a pipeline.

3. The multifunctional dip-coating device for casting sand core coating as described in claim 1, characterized in that, The material conveying mechanism includes a stirring frame installed at the top of the open trough, a liquid pump installed on the stirring frame, the input end of the liquid pump being connected to the paint tank, and the output end of the liquid pump being connected to a nozzle located above the filter tank via a pipe.

4. The multifunctional dip-coating device for casting sand core coating as described in claim 3, characterized in that, The mixing rack is equipped with a mixing pump, and a second mixing blade that extends into the paint tank is installed at the output end of the mixing pump.

5. The multifunctional dip-coating device for casting sand core coating as described in claim 1, characterized in that, A pneumatic diaphragm pump is installed on one side of the open trough. The input end of the pneumatic diaphragm pump is connected to the filter tank through a pipe and is located below the filter screen. The output end of the pneumatic diaphragm pump is connected to the inside of the paint tank through a pipe.

6. The multifunctional dip-coating device for casting sand core coating as described in claim 1, characterized in that, The maximum rotation angle of the rotating block is ninety degrees.

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