A drying device for sand mould coating

Abstract

The present application belongs to the technical field of casting sand mold drying, and particularly relates to a sand mold coating drying device, which comprises a circulating cold and hot convection dryer and a mold cavity coating suction device, and is characterized in that the mold cavity coating suction device comprises a top plug plate and a suction device, and the circulating cold and hot convection dryer comprises a sand mold placing table, a drying cabin, a hot air pump and a condenser. The technical scheme adopted by the present application is that the coating suction device is located at the top of the sand mold cavity by using height adjustment and coating suction device cooperation, the spacer plate is removed, the thickness of the coating between the coating suction device and the mold cavity is left, and the original mold is used to press the coating suction device, so that the lower end of the coating suction device is the same as the surface shape of the sand mold cavity, and the excess coating is sucked out.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of drying sand mold, and particularly relates to a sand mold coating drying device. BACKGROUND

[0002] In the preparation process of a casting sand mold, a layer of casting coating needs to be coated on the inner cavity of the sand mold and the surface of the sand core. The casting coating of the sand mold is divided into water-based coating and alcohol-based coating. The water-based coating needs to be dried through a drying furnace, and the alcohol-based coating can be directly ignited for drying or naturally air-dried. The dip coating method is a commonly used method for coating the water-based coating on the sand mold. However, the dip coating method cannot control the amount of the attached coating. If the amount of the coating is too small, the surface of the mold cavity after drying can be uneven, thereby greatly reducing the precision of the casting and causing the sand to adhere to the surface of the casting and be difficult to clean. If the amount of the coating is too large, the drying time is greatly prolonged, and the coating can easily foam and partially separate from the surface of the mold cavity during the drying process.

[0003] The main problem to be solved by the application is how to adapt the thickness of the coating to different sand molds, how to remove the excess coating in the mold cavity, and how to make the thickness of the liquid coating in the mold cavity before drying substantially uniform. SUMMARY

[0004] In view of the above problems, the application provides a sand mold coating drying device to overcome the defects of the prior art. In order to solve the problem that the thickness of the coating in the mold cavity cannot be controlled during dip coating and the problem that too much or too little coating is easily caused, the application uses a height adjustment and coating suction device to make the coating suction device located at the top of the sand mold cavity, removes the backing plate, leaves the thickness of the coating between the coating suction device and the mold cavity, and then uses the original mold to press the coating suction device, so that the lower end of the coating suction device is the same as the shape of the surface of the sand mold cavity, and the excess coating is sucked out.

[0005] The application provides a sand mold coating drying device, which comprises a circulating cold and hot convection dryer and a mold cavity coating suction device. The mold cavity coating suction device comprises a top plug plate and a suction device. The circulating cold and hot convection dryer comprises a sand mold placing table, a drying cabin, a hot air pump and a condenser. The top plug plate is arranged above the drying cabin, the suction device is arranged on the top plug plate, the sand mold placing table is arranged in the drying cabin, the hot air pump is arranged below the drying cabin, and the condenser is arranged on one side of the drying cabin.

[0006] Further, the top plug plate comprises a connecting top plate and a suction pipe plug plate. The two sides of the connecting top plate are provided with fixed wing plates. The suction pipe plug plate is arranged above the connecting top plate, and a plurality of plug holes are arranged on the suction pipe plug plate.

[0007] Further, the suction device is inserted into the socket, and the suction device comprises a tube and a piston rod, one end of the tube is provided with a liquid suction port, the other end of the tube is provided with a piston socket, and the piston rod is arranged in the tube through the piston socket.

[0008] Further, the sand mold placing table comprises a sliding placing plate and a lifting control device, the lifting control device is arranged above the sliding placing plate, a sliding block is arranged below the sliding placing plate, a sealing plate connecting rod is arranged on one side of the sliding placing plate, a sealing plate is arranged at one end of the sealing plate connecting rod, a handle is arranged on the side of the sealing plate away from the sealing plate connecting rod, the lifting control device comprises a mounting bottom plate, two linear sliding tables are arranged on the mounting bottom plate, a lifting sliding block is arranged on the linear sliding table, a lifting rotating rod is arranged on the lifting sliding block, a placing table is arranged above the mounting bottom plate, two rotating rod connecting seats are arranged below the placing table, and a pad plate is arranged on the placing table.

[0009] Further, a plurality of air inlet holes are arranged on one side wall of the drying cabin, a plurality of air outlet holes are arranged on the other side wall of the drying cabin, a first connecting plate is arranged outside the air inlet hole, a second connecting plate is arranged outside the air outlet hole, an opening is arranged above the drying cabin, a feeding port is arranged on the drying cabin, a sliding rail is arranged on the inner side of the bottom of the drying cabin, and the sliding block is arranged in the sliding rail in a sliding mode.

[0010] Further, the hot air pump machine comprises a heat pump, a cold air inlet pipe and a hot air outlet pipe, the cold air inlet pipe is arranged between the heat pump and the condenser, and the hot air outlet pipe is arranged between the heat pump and the drying cabin.

[0011] Further, a circulating air pump is arranged on the cold air inlet pipe, a cold air inlet is arranged at the end of the cold air inlet pipe away from the heat pump, a wind guide cover is arranged at the end of the hot air outlet pipe away from the heat pump, and the wind guide cover is connected with the first connecting plate.

[0012] Further, the condenser comprises an external cover plate, a condenser body and a cold air outlet pipe, the condenser body is arranged in the external cover plate, and the cold air outlet pipe is arranged on one side of the external cover plate.

[0013] Further, a cooling water inlet and a cooling water outlet are arranged on the external cover plate, a wet air inlet is arranged on the external cover plate, a fixed frame is arranged on the wet air inlet, the fixed frame is connected with the second connecting plate, a cold air outlet is arranged at the end of the cold air outlet pipe away from the external cover plate, and the cold air outlet is connected with the cold air inlet.

[0014] Further, the outer side of the drying cabin is provided with an intermediate shell, the outer side of the condenser is provided with a condenser component protection shell, the condenser component protection shell is provided with through holes for the inlet and outlet of cooling water, the outer side of the hot air outlet pipe is provided with a hot air pipe protection shell, and the outer side of the heat pump is provided with a bottom protection shell.

[0015] The sand mold coating drying device has the following beneficial effects:

[0016] (1) The excess coating is sucked out before drying, which greatly reduces the drying time, reduces the possibility of uneven coating in the mold cavity, and reduces the possibility of coating foaming during the drying process;

[0017] (2) The original mold is placed on the top plugboard, and the surface shape of the original mold in the mold cavity can be obtained by the cooperation of the top plugboard, the suction device and the lifting control device, and the suction device is quickly positioned;

[0018] (3) The thickness of the coating is replaced by the height of the gasket on the sand mold placing table, and the amount of coating sucked is determined by placing the gasket in the measuring stage and removing the gasket in the suction stage. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 An isometric view of the sand mold coating drying device is provided;

[0020] Figure 2 A front view of the sand mold coating drying device is provided;

[0021] Figure 3 An exploded isometric view of the sand mold coating drying device is provided;

[0022] Figure 4 An internal structure schematic diagram of the sand mold coating drying device is provided;

[0023] Figure 5 A top plugboard structure schematic diagram is provided;

[0024] Figure 6 A suction device structure schematic diagram is provided;

[0025] Figure 7 A sand mold placing table structure schematic diagram is provided;

[0026] Figure 8 A lifting control device diagram is provided;

[0027] Figure 9 A placing table structure schematic diagram is provided;

[0028] Figure 10 A drying cabin structure schematic diagram is provided;

[0029] Figure 11 It is a hot air pump structure schematic diagram;

[0030] Figure 12 It is a condenser structure schematic diagram.

[0031] Wherein, 1, top plugboard; 2, suction device; 3, sand mold placing table; 4, drying cabin body; 5, hot air pump; 6, condenser; 7, connecting top plate; 8, suction pipe plugboard; 9, fixed wing plate; 10, plug hole; 11, pipe body; 12, piston rod; 13, liquid suction port; 14, piston socket; 15, sliding placing plate; 16, lifting control device; 17, sliding block; 18, sealing plate connecting rod; 19, sealing plate; 20, handle; 21, air inlet hole; 22, air outlet; 23, first connecting plate; 24, second connecting plate; 25, opening; 26, feeding port; 27, sliding rail; 28, heat pump; 29, cold air inlet pipe; 30, hot air outlet pipe; 31, circulating air pump; 32, cold air inlet; 33, air deflector cover; 34, external cover plate; 35, condenser body; 36, cold air outlet pipe; 37, cooling water inlet; 38, cooling water outlet; 39, wet air inlet; 40, fixed frame; 41, cold air outlet; 42, intermediate shell; 43, condenser component protection shell; 44, hot air pipe protection shell; 45, bottom protection shell; 46, mounting bottom plate; 47, linear sliding table; 48, lifting sliding block; 49, lifting rotating rod; 50, placing table; 51, rotating rod connecting seat; 52, pad plate.

[0032] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] As Figure 1、 Figure 2 、 Figure 3 、 Figure 4 The present application provides a sand mold coating drying device, as shown in the drawings, comprising a circulating cold and hot convection dryer and a mold cavity coating suction device, characterized in that: the mold cavity coating suction device comprises a top plug plate 1 and a suction device 2, the circulating cold and hot convection dryer comprises a sand mold placing table 3, a drying cabin 4, a hot air pump 5 and a condenser 6, the top plug plate 1 is arranged above the drying cabin 4, the suction device 2 is arranged on the top plug plate 1, the sand mold placing table 3 is arranged inside the drying cabin 4, the hot air pump 5 is arranged below the drying cabin 4, and the condenser 6 is arranged on one side of the drying cabin 4.

[0036] As shown in the drawings, Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 The top plug plate 1 comprises a connecting top plate 7 and a suction pipe plug plate 8, both sides of the connecting top plate 7 are provided with fixed wing plates 9, the suction pipe plug plate 8 is arranged above the connecting top plate 7, a plurality of plug holes 10 are arranged on the suction pipe plug plate 8, the suction device 2 is inserted into the plug hole 10, the suction device 2 comprises a pipe body 11 and a piston rod 12, one end of the pipe body 11 is provided with a liquid suction port 13, the other end of the pipe body 11 is provided with a piston insertion port 14, the piston rod 12 is arranged in the pipe body 11 through the piston insertion port 14, the sand mold placing table 3 comprises a sliding placing plate 15 and a lifting control device 16, the lifting control device 16 is arranged above the sliding placing plate 15, a sliding block 17 is arranged below the sliding placing plate 15, a sealing plate connecting rod 18 is arranged on one side of the sliding placing plate 15, one end of the sealing plate connecting rod 18 is provided with a sealing plate 19, a handle 20 is arranged on the side of the sealing plate 19 away from the sealing plate connecting rod 18, the lifting control device 16 comprises a mounting bottom plate 46, two linear sliding tables 47 are arranged on the mounting bottom plate 46, a lifting sliding block 48 is arranged on the linear sliding table 47, a lifting rotating rod 49 is arranged on the lifting sliding block 48, a placing table 50 is arranged above the mounting bottom plate 46, two rotating rod connecting seats 51 are arranged below the placing table 50, and a cushion plate 52 is arranged on the placing table 50. When the sand mold is made, half of the prototype is located in the mold cavity, so that the height difference between the lowest point and the highest point in the mold cavity is half of the height of the prototype. The handle of the linear sliding table 47 can lift the lifting rotating rod 49, so that the sand mold as a whole is lifted, and lines can be drawn on the cushion plate 52, the placing table 50 and the suction pipe plug plate 8 respectively, so that the sand mold and the prototype can be conveniently aligned.

[0037] As shown in the drawings, Figure 7 、 Figure 8 、 Figure 10As shown, the drying cabin 4 is provided with a plurality of air inlet holes 21 on one side wall, and a plurality of air outlet holes 22 on the other side wall. The outer side of the air inlet holes 21 is provided with a first connecting plate 23, and the outer side of the air outlet holes 22 is provided with a second connecting plate 24. The upper part of the drying cabin 4 is provided with an opening 25, and the drying cabin 4 is provided with a feeding port 26. The inner side bottom of the drying cabin 4 is provided with a sliding rail 27, and the sliding block 17 is slidingly arranged inside the sliding rail 27. After the sealing plate 19 is pushed to the bottom, the placement table 50 will be located directly below the suction pipe insertion plate 8, and the centers of the two are on the same vertical line.

[0038] As shown in Figure 4 , Figure 11 , the hot air pump 5 includes a heat pump 28, a cold air inlet pipe 29, and a hot air outlet pipe 30. The cold air inlet pipe 29 is arranged between the heat pump 28 and the condenser 6, and the hot air outlet pipe 30 is arranged between the heat pump 28 and the drying cabin 4.

[0039] As shown in Figure 11 , the cold air inlet pipe 29 is provided with a circulating air pump 31. The end of the cold air inlet pipe 29 away from the heat pump 28 is provided with a cold air inlet 32. The end of the hot air outlet pipe 30 away from the heat pump 28 is provided with a wind guide cover 33, which is connected between the first connecting plate 23.

[0040] As shown in Figure 4 , Figure 12 , the condenser 6 includes an external cover plate 34, a condenser body 35, and a cold air outlet pipe 36. The condenser body 35 is arranged inside the external cover plate 34, and the cold air outlet pipe 36 is arranged on one side of the external cover plate 34.

[0041] As shown in Figure 11 , Figure 12 , the external cover plate 34 is provided with a cooling water inlet 37 and a cooling water outlet 38. The external cover plate 34 is provided with a wet air inlet 39, which is provided with a fixed frame 40. The fixed frame 40 is connected between the second connecting plate 24. The end of the cold air outlet pipe 36 away from the external cover plate 34 is provided with a cold air outlet 41, which is connected between the cold air inlet 32. The cooling water inlet 37 and the cooling water outlet 38 need to be externally connected to cooling water to maintain the low temperature of the condenser body 35, so as to continuously condense the high-temperature wet air.

[0042] As shown in Figure 1 , Figure 2 , Figure 3As shown, the outer side of the drying cabin 4 is provided with an intermediate shell 42, the outer side of the condenser 6 is provided with a condenser component protection shell 43, the condenser component protection shell 43 is provided with through holes for the cooling water inlet 37 and the cooling water outlet 38 to pass through, the outer side of the hot air outlet pipe 30 is provided with a hot air pipe protection shell 44, and the outer side of the heat pump 28 is provided with a bottom protection shell 45.

[0043] In specific use, after drying the sand mold, a hard thin plate is placed on the upper surface of the sand mold, and the suction device 2 is pressed down, then the sand mold with the hard thin plate is placed on the pad 52, the lifting control device 16 is adjusted so that the hard thin plate lifts the suction device 2, after the height of the suction device 2 is measured to be equal to half of the height of the original mold, the height difference between the pad 52 and the installation bottom plate 46 is recorded, the pad 52 is lowered, the sand mold is taken out, the sand mold is immersed in paint, after completion, the pad 52 is removed, the sand mold is placed again, and the original mold is also placed in alignment on the suction pipe plug plate 8, so that the suction device 2 is lowered, at this time, the curved surface formed by the lowering of the suction device 2 is consistent with the inside of the mold cavity of the sand mold, and the height difference is one thickness of the pad 52, the excess paint in the mold cavity is sucked out by using the suction device 2, the hot air pump 5 is started, the hot air outlet pipe 30 provides dry hot air into the drying cabin 4, the humidity increases and flows to the condenser 6, the condenser 6 cools the hot air and condenses the water vapor, the humidity decreases, and then circulates into the hot air pump 5 through the cold air outlet pipe 36, thereby drying the paint.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is also possible in the present application that units can be combined or sub-divided to provide further embodiments. It is intended that the specification and examples be considered as exemplary only, with the true scope of the application being indicated by the following claims.

[0045] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application in its broadest form. The scope of the application should therefore be limited only by the scope of the claims and equivalents thereof.

[0046] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution should belong to the protection scope of the application.

Claims

1. A method of using a sand mold coating drying apparatus comprising a circulating hot and cold convection dryer and a mold cavity coating suction device, characterized by: The cavity coating suction device comprises a top insertion plate (1) and a suction device (2), the circulating cold and hot convection dryer comprises a sand mold placing table (3), a drying cabin (4), a hot air pump (5) and a condenser (6), the top insertion plate (1) is arranged above the drying cabin (4), the suction device (2) is arranged on the top insertion plate (1), the sand mold placing table (3) is arranged in the drying cabin (4), the hot air pump (5) is arranged below the drying cabin (4), and the condenser (6) is arranged on one side of the drying cabin (4); The top insertion plate (1) comprises a connecting top plate (7) and a suction pipe insertion plate (8), both sides of the connecting top plate (7) are provided with fixed wing plates (9), the suction pipe insertion plate (8) is arranged above the connecting top plate (7), and a plurality of insertion holes (10) are arranged on the suction pipe insertion plate (8); The suction device (2) is inserted into the insertion hole (10), the suction device (2) comprises a pipe body (11) and a piston rod (12), one end of the pipe body (11) is provided with a liquid suction port (13), the other end of the pipe body (11) is provided with a piston insertion port (14), and the piston rod (12) is arranged in the pipe body (11) through the piston insertion port (14); The sand mold placing table (3) comprises a sliding placing plate (15) and a lifting control device (16), the lifting control device (16) is arranged above the sliding placing plate (15), a sliding block (17) is arranged below the sliding placing plate (15), a sealing plate connecting rod (18) is arranged on one side of the sliding placing plate (15), one end of the sealing plate connecting rod (18) is provided with a sealing plate (19), a handle (20) is arranged on a side of the sealing plate (19) away from the sealing plate connecting rod (18), and the lifting control device (16) comprises a mounting bottom plate (46), two linear sliding tables (47) are arranged on the mounting bottom plate (46), a lifting sliding block (48) is arranged on the linear sliding table (47), a lifting rotating rod (49) is arranged on the lifting sliding block (48), a placing table (50) is arranged above the mounting bottom plate (46), two rotating rod connecting seats (51) are arranged below the placing table (50), and a cushion plate (52) is arranged on the placing table (50). Specific use, in the upper surface of the sand mold placed a hard sheet, and down to take the suction device (2), and then with the hard sheet sand mold placed on the base plate (52), adjust the lifting control device (16), so that the hard sheet will suction device (2) top up, measured suction device (2) up to the height of the original prototype half after the height difference between the base plate (52) and the installation base plate (46) is recorded, down the base plate (52), take out the sand mold, the sand mold is immersed in paint, after completion of the base plate (52) is taken down, again to the alignment of the sand mold, the prototype is placed on the suction tube plugboard (8) alignment, so that the suction device (2) down, at this time the suction device (2) down the curved surface formed by the sand mold cavity inside consistent, and the height difference of a base plate (52) thickness, using the suction device (2) will be excess paint suction cavity, start the hot air pump (5), hot air outlet pipe (30) to the drying cabin (4) inside provides dry hot air, humidity increases and flows to the condenser (6), the condenser (6) on the hot air cooling, and the water vapor condenses, humidity decreases, again through the cold air outlet pipe (36) into the hot air pump (5), thus the paint drying.

2. A method of using a sand mould coating drying apparatus according to claim 1, characterised in that: The side wall of the drying cabin (4) is provided with a plurality of air inlet holes (21), the other side wall of the drying cabin (4) is provided with a plurality of air outlet (22), the outer side of the air inlet hole (21) is provided with a first connecting plate (23), the outer side of the air outlet (22) is provided with a second connecting plate (24), the upper side of the drying cabin (4) is provided with an opening (25), the drying cabin (4) is provided with a feeding port (26), the inner side of the drying cabin (4) is provided with a slide rail (27), the sliding block (17) is slidably arranged in the slide rail (27).

3. A method of using a sand mould coating drying apparatus according to claim 2, characterised in that: The hot air pump (5) comprises a heat pump (28), a cold air inlet pipe (29) and a hot air outlet pipe (30), the cold air inlet pipe (29) is arranged between the heat pump (28) and the condenser (6), and the hot air outlet pipe (30) is arranged between the heat pump (28) and the drying cabin (4).

4. A method of using a sand mould coating drying apparatus according to claim 3, wherein: The circulating air pump (31) is arranged on the cold air inlet pipe (29), one end of the cold air inlet pipe (29) away from the heat pump (28) is provided with a cold air inlet (32), one end of the hot air outlet pipe (30) away from the heat pump (28) is provided with a wind guide cover (33), and the wind guide cover (33) is connected between the first connecting plate (23).

5. A method of using a drying apparatus for sand moulding coating according to claim 4, characterized in that: The condenser (6) comprises an outer cover plate (34), a condenser body (35) and a cold air outlet pipe (36), the condenser body (35) is arranged in the outer cover plate (34), and the cold air outlet pipe (36) is arranged on one side of the outer cover plate (34).

6. A method of using a drying apparatus for sand moulding coating according to claim 5, characterized in that: The outer cover plate (34) is provided with a cooling water inlet (37) and a cooling water outlet (38), the outer cover plate (34) is provided with a wet air inlet (39), the wet air inlet (39) is provided with a fixed frame (40), the fixed frame (40) is connected between the second connecting plate (24), and one end of the cold air outlet pipe (36) away from the outer cover plate (34) is provided with a cold air outlet (41), the cold air outlet (41) is connected between the cold air inlet (32).

7. A method of using a drying apparatus for sand moulding coating according to claim 6, characterized in that: The outer side of the drying cabin body (4) is provided with an intermediate shell (42), the outer side of the condenser (6) is provided with a condenser component protection shell (43), the condenser component protection shell (43) is provided with a through hole for the cooling water inlet (37) and the cooling water outlet (38) to penetrate, the outer side of the hot air outlet pipe (30) is provided with a hot air pipe protection shell (44), and the outer side of the heat pump (28) is provided with a bottom protection shell (45).

Images