Investment casting casting cooling device

Abstract

The utility model discloses a casting cooling device for investment casting, belongs to the technical field of investment casting, and solves the problems that hot air in a cooling box of an existing device is in contact with external cold air to be liquefied into water to be gathered at the bottom of the cooling box, and the cold air cannot penetrate through the water to cool the bottom of the cooling box; the casting cooling device comprises the cylindrical cooling box with an opening in the top face, drainage holes are evenly formed in the bottom face of the cooling box, annular grooves distributed in a linear array mode are formed in the side wall of the cooling box, and the annular grooves are communicated with the cooling box. Air inlet holes distributed in an annular array are formed in the side wall of the annular groove, a cooling assembly communicated with external air cooling equipment is arranged on the side wall of the cooling box, a water drainage assembly and a supporting assembly are arranged at the bottom of the cooling box, and through arrangement of a water drainage hole, a water receiving hopper, a water drainage pipe and a third electromagnetic valve, the water cooling equipment can be cooled. And the situation that the bottom of the mold shell in the cooling box is immersed in water is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to an investment casting cooling device. Background Art

[0002] Investment casting, also known as lost wax casting, is a manufacturing process that can produce parts with excellent precision and detail. Investment casting is done by pressing wax into a wax mold, which is then manually welded together. After the welding is completed, the mold shell is prepared. After the mold shell is prepared, it is dewaxed and roasted to form the mold cavity of the cast part. Molten metal is then poured into the part cavity and processed into the desired part after it is completely cooled.

[0003] After searching, the application with patent number 202321023104.5 discloses an investment casting cooling device, comprising: a cooling box and an air pipe joint; the cooling box is configured as a cylindrical structure with an opening at the top, and a receiving cavity for placing the investment casting is provided in the cooling box; a plurality of air inlets are evenly spaced along the axis of the cooling box on the arc side wall, and each of the air inlets is provided with the air pipe joint, and the air pipe joint is used to connect to an external cooling air device;

[0004] Although the investment casting cooling device can accelerate the cooling rate of the investment casting, evenly cool the casting, and improve the quality of the casting by placing the investment casting in the accommodating chamber and allowing the cooling gas output by the external cooling gas device to enter the accommodating chamber through the air pipe joint on the air inlet, the hot air inside the cooling box of the investment casting cooling device will liquefy into water when it comes into contact with the external cold air and gather at the bottom of the cooling box. The cold air cannot pass through the water to cool the bottom of the cooling box, which in turn causes the casting inside the cooling box to be unable to be cooled evenly, affecting the quality of the casting.

[0005] Therefore, we propose an investment casting cooling device. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model provides a cooling device for investment castings, which solves the problem that the hot air inside the cooling box of the existing device will liquefy into water when it comes into contact with the external cold air and gather at the bottom of the cooling box. The cold air cannot pass through the water to cool the bottom of the cooling box, which in turn causes the castings inside the cooling box to be unable to be cooled evenly, affecting the quality of the castings.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an investment casting cooling device, comprising a cylindrical cooling box with an open top surface, a cover plate detachably mounted on the top surface of the cooling box by bolts;

[0008] The bottom surface of the cooling box is provided with evenly distributed drainage holes, the side wall of the cooling box is provided with annular grooves distributed in a linear array, the side wall of the annular groove is provided with air inlet holes distributed in an annular array, the side wall of the cooling box is provided with a cooling assembly connected to an external cooling device, and the bottom of the cooling box is provided with a drainage assembly and a support assembly;

[0009] The drainage assembly includes a water receiving hopper, a drainage pipe, a third solenoid valve and a liquid level gauge. The water receiving hopper is fixedly installed on the bottom surface of the cooling box. The drainage hole is located in the inner circle of the top surface of the water receiving hopper. The interior of the water receiving hopper is hollow and has upper and lower openings. The top surface diameter of the water receiving hopper is larger than the bottom surface diameter. The bottom surface of the water receiving hopper is fixedly installed with a drainage pipe, the drainage pipe is fixedly installed with a third solenoid valve, and the side wall of the water receiving hopper is fixedly installed with a liquid level gauge.

[0010] Preferably, the bottom end of the drain pipe is connected to an external water storage tank through a hose, and the water discharged through the drain pipe can be collected by the water storage tank.

[0011] Preferably, the cooling assembly includes an annular air inlet plate, a connecting pipe, a first solenoid valve, a connecting plate, an external pipe and a second solenoid valve. The number of the annular air inlet plates corresponds to the annular groove. The annular air inlet plate is rotatably mounted on the inner wall of the annular groove through an elastic sealing ring. The cross-section of the annular air inlet plate is "U"-shaped, wherein cold air enters the interior of the annular air inlet plate and then passes through the air inlet hole into the interior of the cooling box.

[0012] Preferably, a connecting pipe is fixedly installed on the side wall of the annular air inlet plate, and an internal hollow connecting plate is fixedly installed on the end of the connecting pipe away from the annular air inlet plate, and an external pipe connected to an external cooling device is fixedly installed on the side of the connecting plate away from the connecting pipe. The external pipe, connecting plate, connecting pipe and annular air inlet plate are interconnected, wherein the external cooling air enters the interior of the connecting plate through the external pipe, and then the cooling air inside the connecting plate enters the interior of each annular air inlet plate through the connecting pipe, and finally enters the interior of the cooling box to cool the casting.

[0013] Preferably, a first solenoid valve and a second solenoid valve are fixedly installed on the connecting pipe and the external pipe respectively, wherein the flow of cold air in the connecting pipe at each position can be controlled by the first solenoid valve, and the total flow of cold air can be controlled by the second solenoid valve.

[0014] Preferably, the support assembly includes support legs and support rings, the support legs are fixedly mounted on the bottom surface of the cooling box and distributed in a circular array, and the support rings are fixedly mounted on the bottom surface of the support legs, wherein the cooling box can be supported by the support legs and the support rings.

[0015] Preferably, a pouring port is provided in the middle of the top surface of the cooling box, a pouring pipe connected to the pouring port is fixedly installed in the middle of the top surface of the cooling box, a sealing cover is threadedly connected to the top surface of the pouring pipe, and exhaust pipes distributed in a ring array and connected to the interior of the cooling box are fixedly installed on one side of the top surface of the cover plate, the exhaust pipe is "L"-shaped and a piston is movably fitted inside it, wherein the pouring pipe is used to pour the smelted metal liquid into the mold shell placed inside the cooling box, and the exhaust pipe is used to discharge the gas inside the cooling box.

[0016] The utility model provides a cooling device for investment castings. It has the following beneficial effects:

[0017] 1. The investment casting cooling device, through the arrangement of the drainage hole, the water receiving hopper, the drainage pipe and the third solenoid valve, when the hot air inside the cooling box contacts the external cold air and liquefies into water, the water can enter the interior of the water receiving hopper through the drainage hole, thereby preventing the bottom of the mold shell inside the cooling box from being immersed in water, which makes it difficult for the external cold air to cool the bottom of the mold shell. This is conducive to ensuring that the mold shell and the metal liquid inside the mold shell are fully and evenly contacted with the cold air, thereby achieving the purpose of increasing the cooling rate of the casting and uniformly cooling all parts of the casting, which is conducive to improving the quality of the casting. It solves the problem of the existing device that the hot air inside the cooling box contacts the external cold air and liquefies into water and gathers at the bottom of the cooling box, and the cold air cannot pass through the water to cool the bottom of the cooling box, which then causes the casting inside the cooling box to be unevenly cooled, thereby affecting the quality of the casting.

[0018] 2. The investment casting cooling device transmits cold air to the external pipe by turning on the external cooling equipment, and then the cold air enters the interior of the connecting pipe through the connecting plate, and then the cold air in the connecting pipe enters the interior of the annular air inlet plate and enters the interior of the cooling box through the air inlet hole to cool the molten metal in the mold shell. The annular air inlet plate is rotated and sleeved on the inside of the annular groove through the elastic sealing ring, so that the cooling component can be rotated along the outer surface of the cooling box to facilitate the adjustment of the direction of the external pipe so that the external pipe can be quickly connected to the outlet pipe of the external cooling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a side structural diagram of the present utility model;

[0021] Figure 3 This is a schematic diagram of the cooling box structure of the present utility model;

[0022] Figure 4 This is a schematic diagram of the cooling assembly structure of the present utility model.

[0023] In the figure: 1. Cooling box; 11. Drain hole; 12. Annular groove; 13. Air inlet; 2. Cover plate; 21. Casting pipe; 22. Exhaust pipe; 3. Cooling assembly; 31. Annular air inlet plate; 32. Connecting pipe; 33. First solenoid valve; 34. Connecting plate; 35. External pipe; 36. Second solenoid valve; 4. Drain assembly; 41. Water receiving hopper; 42. Drain pipe; 43. Third solenoid valve; 44. Liquid level gauge; 5. Support assembly; 51. Support leg; 52. Support ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1:

[0026] like Figure 1-4 As shown: it includes a cooling box 1 with an open top and a cylindrical shape, a cover plate 2 is detachably installed on the top surface of the cooling box 1 by bolts, the bottom surface of the cooling box 1 is provided with evenly distributed drainage holes 11, the side wall of the cooling box 1 is provided with annular grooves 12 distributed in a linear array, the side wall of the annular groove 12 is provided with air inlet holes 13 distributed in an annular array, the side wall of the cooling box 1 is provided with a cooling component 3 connected to the external cooling equipment, the bottom of the cooling box 1 is provided with a drainage component 4 and a support component 5, the drainage component 4 includes a water receiving bucket 41, a drainage pipe 42, a third solenoid valve 43 and a liquid level gauge 44, the water receiving bucket 41 is fixedly installed on the bottom surface of the cooling box 1, the drainage hole 11 is located in the inner circle of the top surface of the water receiving bucket 41, the water receiving bucket 41 is hollow inside and opened up and down, and the top surface diameter of the water receiving bucket 41 is larger than the bottom surface diameter A drain pipe 42 is fixedly installed on the bottom surface of the water receiving bucket 41, and a third solenoid valve 43 is fixedly installed on the drain pipe 42. A liquid level gauge 44 is fixedly installed on the side wall of the water receiving bucket 41. The bottom end of the drain pipe 42 is connected to the external water tank through a hose. Through the arrangement of the drain hole 11, the water receiving bucket 41, the drain pipe 42 and the third solenoid valve 43, when the hot air inside the cooling box 1 contacts with the external cold air and liquefies into water, the water can enter the interior of the water receiving bucket 41 through the drain hole 11, avoiding the bottom of the mold shell inside the cooling box 1 being immersed in water, which makes it difficult for the external cold air to cool the bottom of the mold shell, and is conducive to making the mold shell and the metal liquid inside it fully and evenly contact with the cold air, thereby achieving the purpose of increasing the cooling rate of the casting and evenly cooling all parts of the casting, which is conducive to improving the quality of the casting;

[0027] Example 2:

[0028] like Figure 1 、 2 As shown in Figure 4: the cooling assembly 3 includes an annular air inlet plate 31, a connecting pipe 32, a first solenoid valve 33, a connecting plate 34, an external pipe 35 and a second solenoid valve 36. The number of the annular air inlet plates 31 corresponds to the annular groove 12. The annular air inlet plate 31 is rotatably mounted on the inner wall of the annular groove 12 through an elastic sealing ring. The cross-section of the annular air inlet plate 31 is "U"-shaped. The side wall of the annular air inlet plate 31 is fixedly mounted with a connecting pipe 32. The end of the connecting pipe 32 away from the annular air inlet plate 31 is fixedly mounted with an internal hollow connecting plate 34. The side of the connecting plate 34 away from the connecting pipe 32 is fixedly mounted with an external pipe 35 connected to the external cooling equipment. The external pipe 35, the connecting plate 34, the connecting pipe 32 and the annular air inlet The air plates 31 are interconnected, and a first solenoid valve 33 and a second solenoid valve 36 are fixedly installed on the connecting pipe 32 and the external pipe 35, respectively. By opening the external cooling device, cold air is delivered to the external pipe 35, and then the cold air enters the interior of the connecting pipe 32 through the connecting plate 34. Then, the cold air in the connecting pipe 32 enters the interior of the annular air inlet plate 31 and enters the interior of the cooling box 1 through the air inlet hole 13 to cool the molten metal in the shell. The annular air inlet plate 31 is rotatably sleeved inside the annular groove 12 through an elastic sealing ring, so that the cooling assembly 3 can be rotated along the outer surface of the cooling box 1 to facilitate adjustment of the direction of the external pipe 35 so that the external pipe 35 can be quickly connected to the outlet pipe of the external cooling device;

[0029] Example 3:

[0030] like Figure 1-2 As shown: the first solenoid valve 33 and the second solenoid valve 36 are fixedly installed on the connecting pipe 32 and the external pipe 35 respectively, the support assembly 5 includes a support leg 51 and a support ring 52, the support leg 51 is fixedly installed on the bottom surface of the cooling box 1 and is distributed in an annular array, the bottom surface of the support leg 51 is fixedly installed with a support ring 52, a pouring port is opened in the middle of the top surface of the cooling box 1, a pouring pipe 21 connected to the pouring port is fixedly installed in the middle of the top surface of the cooling box 1, a sealing cover is threadedly connected to the top surface of the pouring pipe 21, and an exhaust pipe 22 distributed in an annular array and connected to the interior of the cooling box 1 is fixedly installed on one side of the top surface of the cover plate 2. The exhaust pipe 22 is "L"-shaped and has a piston movably sleeved inside. The cooling box 1 can be supported by the support legs 51 and the support ring 52, and the smelted metal liquid is poured into the mold shell placed inside the cooling box 1 through the pouring pipe 21, and the gas inside the cooling box 1 is discharged through the exhaust pipe 22.

[0031] The working principle and use process of the utility model: When using the investment casting cooling device, first place the preheated shell in the cooling box 1, then install the cover plate 2 on the top surface of the cooling box 1 by bolts, then open the sealing cover of the pouring pipe 21, and then pour the smelted metal liquid into the preheated shell through the pouring pipe 21. After pouring, immediately cover the sealing cover, and at the same time turn on the external cooling device to transport cold air to the external pipe 35, and then the cold air enters the interior of the connecting pipe 32 through the connecting plate 34, and then the cold air in the connecting pipe 32 enters the interior of the annular air inlet plate 31 and enters the interior of the cooling box 1 through the air inlet hole 13 The molten metal in the mold shell is cooled, and at the same time, the piston in the exhaust pipe 22 is removed to discharge the gas inside the gas cooling box 1 through the exhaust pipe 22. During this process, the water formed by the liquefaction of the hot air inside the cooling box 1 and the external cold air will pass through the drain hole 11 and be discharged into the inside of the water receiving bucket 41. The liquid level inside the water receiving bucket 41 is observed by the liquid level meter 44. When the liquid level inside the water receiving bucket 41 is high, the third solenoid valve 43 is opened to discharge the liquid inside the water receiving bucket 41 through the drain pipe 42 to the external water storage tank. After the casting is cooled and formed, the cooling box 1 and the cover plate 2 are disassembled, and then the casting inside the cooling box 1 can be taken out.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An investment casting cooling device, comprising a cylindrical cooling box (1) with an open top surface, a cover plate (2) being detachably mounted on the top surface of the cooling box (1) by bolts; Its characteristics are: The bottom surface of the cooling box (1) is provided with evenly distributed drainage holes (11), the side wall of the cooling box (1) is provided with annular grooves (12) distributed in a linear array, the side wall of the annular groove (12) is provided with air inlet holes (13) distributed in an annular array, the side wall of the cooling box (1) is provided with a cooling assembly (3) connected to an external cooling device, and the bottom of the cooling box (1) is provided with a drainage assembly (4) and a support assembly (5); The drainage assembly (4) includes a water receiving hopper (41), a drainage pipe (42), a third solenoid valve (43) and a liquid level gauge (44); the water receiving hopper (41) is fixedly mounted on the bottom surface of the cooling box (1); the drainage hole (11) is located in the inner circle of the top surface of the water receiving hopper (41); the interior of the water receiving hopper (41) is hollow and has upper and lower openings; the top surface diameter of the water receiving hopper (41) is larger than the bottom surface diameter; the bottom surface of the water receiving hopper (41) is fixedly mounted with a drainage pipe (42); the drainage pipe (42) is fixedly mounted with a third solenoid valve (43); and the side wall of the water receiving hopper (41) is fixedly mounted with a liquid level gauge (44).

2. The investment casting cooling device according to claim 1, characterized in that: The bottom end of the drainage pipe (42) is connected to an external water storage tank through a hose.

3. The investment casting cooling device according to claim 1, characterized in that: The cooling assembly (3) comprises an annular air inlet plate (31), a connecting pipe (32), a first solenoid valve (33), a connecting plate (34), an external pipe (35) and a second solenoid valve (36). The number of the annular air inlet plates (31) corresponds to the annular groove (12). The annular air inlet plate (31) is rotatably mounted on the inner wall of the annular groove (12) via an elastic sealing ring. The cross section of the annular air inlet plate (31) is U-shaped.

4. The investment casting cooling device according to claim 3, characterized in that: A connecting pipe (32) is fixedly mounted on the side wall of the annular air inlet plate (31); an internally hollow connecting plate (34) is fixedly mounted on one end of the connecting pipe (32) away from the annular air inlet plate (31); an external connecting pipe (35) connected to an external cooling device is fixedly mounted on one side of the connecting plate (34) away from the connecting pipe (32); the external connecting pipe (35), the connecting plate (34), the connecting pipe (32) and the annular air inlet plate (31) are in communication with each other.

5. The investment casting cooling device according to claim 4, characterized in that: A first solenoid valve (33) and a second solenoid valve (36) are fixedly mounted on the connecting pipe (32) and the external pipe (35), respectively.

6. The investment casting cooling device according to claim 1, characterized in that: The support assembly (5) comprises support legs (51) and support rings (52); the support legs (51) are fixedly mounted on the bottom surface of the cooling box (1) and distributed in a circular array; the support rings (52) are fixedly mounted on the bottom surface of the support legs (51).

7. The investment casting cooling device according to claim 1, characterized in that: A pouring port is provided in the middle of the top surface of the cooling box (1), a pouring pipe (21) connected to the pouring port is fixedly installed in the middle of the top surface of the cooling box (1), a sealing cover is threadedly connected to the top surface of the pouring pipe (21), and an exhaust pipe (22) distributed in a ring array and connected to the interior of the cooling box (1) is fixedly installed on one side of the top surface of the cover plate (2), the exhaust pipe (22) is "L"-shaped and a piston is movably sleeved inside.

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