Sand mold casting surface air hole removing device

Abstract

The utility model provides a device for removing air holes in the surface of a sand mold casting part, and relates to the technical field of sand mold casting part machining. A device for removing air holes in the surface of a sand mold casting part comprises a fixing base, a cross-shaped sliding rail and a fixing frame are fixedly connected to the top of the fixing base, a mounting plate is fixedly connected to the cross-shaped sliding rail, two movable plates for clamping the casting part are slidably connected to the mounting plate, a connecting plate is slidably connected to the fixing frame, and the connecting plate is fixedly connected to the cross-shaped sliding rail. And one end of the connecting plate is fixedly connected with a movable circular ring. Molten metal in the feeding tank is heated through an electric heating pipe, the possibility that the molten metal is solidified and caked is reduced, the efficiency of removing air holes in the surface of a casting part is improved, a connecting plate is controlled to slide, cold air is injected into a movable circular ring, and the cold air is sprayed out through air spraying holes to cool the casting part through cold air, so that the casting part is cooled. And the processing efficiency is improved, and the risk of scalding when the casting part is disassembled is reduced.

Description

Technical Field

[0001] The utility model relates to a pore removing device, in particular to a pore removing device on the surface of a sand casting, and belongs to the technical field of sand casting processing. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Since the molding materials used in sand casting are cheap and easy to obtain, the mold is simple to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings, it has long been the basic process in casting production. When removing the surface pores of sand castings, it is necessary to pour liquid metal into the inside of the pores to make the pores airtight, and then the surface pores of sand castings can be removed.

[0003] Chinese patent announcement number CN220679331U discloses a device for removing pores from the surface of a sand casting, the technical solution of which is as follows: it includes a processing platform, a stirring frame is fixedly connected to the first connecting rod, a discharge pipe is fixedly connected to the bottom of the feeding box, a valve is arranged on the side of the discharge pipe, a baffle is fixedly connected to the processing platform, a telescopic mechanism is arranged on the processing platform, and the output end of the telescopic mechanism is transmission-connected to a fixed plate.

[0004] However, the inventor of the above device believes that there are certain defects. The above device adopts a stirring method to prevent the molten metal from solidifying, and the anti-solidification effect is poor. After the pouring is completed, a natural cooling method is adopted to cool the casting, and the cooling efficiency is low. For this reason, the utility model provides a device for removing pores on the surface of sand castings. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide a device for removing pores on the surface of sand castings in order to solve the above-mentioned problems, so as to solve the problems in the prior art that the anti-solidification effect is poor, and the castings are cooled by natural cooling after casting, resulting in low cooling efficiency.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a device for removing air holes on the surface of a sand casting, comprising a fixed seat, a cross slide rail and a fixed frame fixedly connected to the top of the fixed seat, a mounting plate fixedly connected to the cross slide rail, two movable plates for clamping the casting being slidably connected to the mounting plate, a connecting plate slidably connected to the fixed frame, a movable ring fixedly connected to one end of the connecting plate, the movable ring is hollow, a circular array of air jet holes is opened on the inner wall of the movable ring, a feeding tank is installed directly above the mounting plate, a feeding pipe is fixedly connected to the bottom of the feeding tank, an electric valve is fixedly connected to the feeding pipe, an electric heating pipe is inlaid on the inner wall of the feeding tank, and a stirring mechanism for stirring the molten metal is installed inside the feeding tank.

[0009] Preferably, an adjusting screw is rotatably connected to the fixed frame, one end of the connecting plate is threadedly connected to the adjusting screw, and a servo motor for driving the adjusting screw to rotate is fixedly connected to the fixed frame. The adjusting screw is driven to rotate by starting the servo motor, thereby driving the movable ring at one end of the connecting plate to rise and fall.

[0010] Preferably, a sliding groove is provided on the top of the mounting plate, and a sliding block is fixedly connected to the bottom of the movable plate. The sliding block is slidably connected to the inside of the sliding groove, and a bidirectional screw is rotatably connected to the inside of the sliding groove. The sliding block is threadedly connected to the bidirectional screw, and the bidirectional screw is driven to rotate, so that the two sliding blocks are brought close to each other, thereby bringing the two movable plates close to each other to clamp and fix the sand casting.

[0011] Preferably, the stirring mechanism includes a stirring rod rotating inside the feeding tank, and a stirring blade is fixedly connected to the stirring rod. The stirring rod is driven to rotate, and the molten metal inside the feeding tank is stirred by the stirring blade to reduce the possibility of solidification of the molten metal.

[0012] Preferably, a feeding pipe is fixedly connected to the feeding tank, and a stirring motor for driving the stirring rod to rotate is fixedly connected to the top of the feeding tank. The feeding pipe is used to facilitate filling the interior of the upper feeding tank, and the stirring motor is used to facilitate driving the stirring rod to rotate.

[0013] Preferably, a connecting frame is fixedly connected to the stirring rod, and a scraper for scraping the inner wall of the feeding tank is fixedly connected to the other end of the connecting frame. Through the rotation of the stirring rod, the scraper can scrape the molten metal adhering to the inner wall of the feeding tank.

[0014] Preferably, a hydraulic rod is fixedly connected to the top of the fixing frame, and the telescopic end of the hydraulic rod is fixedly connected to the top of the feeding tank. The hydraulic rod is started to control the lifting and lowering of the feeding tank as a whole, thereby adjusting the installation height value of the feeding tank.

[0015] Preferably, the inner diameter of the movable ring is greater than the maximum width of the mounting plate, and a connecting hose is fixedly connected to the movable ring, which is connected to external cold air equipment through the connecting hose, and the cold air is transported to the interior of the movable ring through the connecting hose.

[0016] The utility model provides a device for removing pores on the surface of a sand casting, which has the following beneficial effects:

[0017] 1. The device clamps and fixes the sand casting by bringing two movable plates close to each other, and introduces the molten metal in the feeding tank into the pores on the surface of the casting by opening the electric valve on the discharge pipe, stirs the molten metal in the feeding tank by the stirring mechanism inside the feeding tank, and heats the molten metal in the feeding tank by the electric heating tube, thereby reducing the possibility of solidification and agglomeration of the molten metal, improving the efficiency of removing pores on the surface of the casting, and controlling the sliding of the connecting plate, injecting cold air into the inside of the movable ring, and spraying the cold air through the air jet hole to cool the casting, thereby improving the processing efficiency and reducing the risk of scalding when disassembling the casting.

[0018] 2. The device can drive the fixed sand casting to move in the XY axis direction through the cross slide rail, and drive the bidirectional screw to rotate. Under the action of two sliding blocks, the movable plates are controlled to approach each other to clamp and fix the casting. The hydraulic rod is started to drive the feeding tank to rise and fall, so as to adjust the height of the discharge pipe from the casting. The stirring rod is driven to rotate to stir the molten metal with the stirring blade. When the stirring rod rotates, the scraper is used to scrape off the molten metal adhering to the inner wall of the feeding tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall stereogram of the utility model;

[0020] Figure 2 This is a top perspective view of the mounting plate of the utility model;

[0021] Figure 3 This is a three-dimensional diagram of the bottom of the mounting plate of the utility model;

[0022] Figure 4 This is a cross-sectional view of the feeding tank of the utility model;

[0023] Figure 5 For the utility model Figure 2 A is an enlarged schematic diagram.

[0024]

Main component symbol description

[0025] 1. Fixed seat; 2. Cross slide rail; 3. Mounting plate; 31. Sliding groove; 32. Bidirectional screw; 4. Movable plate; 41. Sliding block; 5. Fixed frame; 6. Movable ring; 61. Jet hole; 62. Connecting hose; 7. Loading tank; 71. Discharge pipe; 72. Feeding pipe; 73. Stirring rod; 74. Stirring blade; 75. Scraper; 76. Stirring motor; 77. Hydraulic rod; 8. Electric heating tube; 9. Adjusting screw; 91. Connecting plate; 92. Servo motor. DETAILED DESCRIPTION

[0026] The utility model embodiment provides a device for removing pores on the surface of a sand casting.

[0027] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a device for removing pores on the surface of a sand casting, comprises a fixed seat 1, a cross slide 2 and a fixed frame 5 are fixedly connected to the top of the fixed seat 1, a mounting plate 3 is fixedly connected to the cross slide 2, and two movable plates 4 for clamping the casting are slidably connected to the mounting plate 3. The cross slide 2 refers to a combined slide formed by two groups of linear slides in the X-axis direction and the Y-axis direction, which is also commonly called a coordinate axis slide or an XY-axis slide. The sand casting placed on the mounting plate 3 is clamped and fixed by bringing the two movable plates 4 close to each other. A sliding groove 31 is provided on the top of the mounting plate 3, and a sliding block 41 is fixedly connected to the bottom of the movable plate 4. The sliding block 41 is slidably connected to the inside of the sliding groove 31, and a bidirectional screw 32 is rotatably connected to the inside of the sliding groove 31. The sliding block 41 is threadedly connected to the bidirectional screw 32. The bidirectional screw 32 is a screw with two sections of external threads, and the directions of the two sections of external threads are opposite. The two sliding blocks 41 in the sliding groove 31 are moved closer to or away from each other by driving the bidirectional screw 32.

[0028] Please press View again Figure 1 , Figure 2 and Figure 3, a connecting plate 91 is slidably connected to the fixed frame 5, one end of the connecting plate 91 is fixedly connected to a movable ring 6, the movable ring 6 is hollow, and a circumferential array of jet holes 61 are provided on the inner wall of the movable ring 6, the inner diameter of the movable ring 6 is greater than the maximum width of the mounting plate 3, and a connecting hose 62 is fixedly connected to the movable ring 6. By connecting one end of the connecting hose 62 to the cold air device, cold air is transported to the inside of the movable ring 6 through the connecting hose 62, and then sprayed out through the jet holes 61 to cool the casting by cold air. An adjusting screw 9 is rotatably connected to the fixed frame 5, one end of the connecting plate 91 is threadedly connected to the adjusting screw 9, and a servo motor 92 for driving the adjusting screw 9 to rotate is fixedly connected to the fixed frame 5. The adjusting screw 9 is driven to rotate by starting the servo motor 92, and the movable ring 6 is driven to rise and fall under the connection of the connecting plate 91, so as to comprehensively cool the casting, and a through groove for the rotation of the adjusting screw 9 and the sliding of the connecting plate 91 is provided on the fixed frame 5.

[0029] Please refer again Figure 1 and Figure 4 A feeding tank 7 is installed just above the mounting plate 3, and a feeding pipe 71 is fixedly connected to the bottom of the feeding tank 7, and an electric valve is fixedly connected to the feeding pipe 71. By opening the electric valve on the feeding pipe 71, the molten metal is introduced into the pores on the surface of the casting. An electric heating tube 8 is inlaid on the inner wall of the feeding tank 7, and the molten metal inside the feeding tank 7 is heated by starting the electric heating tube 8. A hydraulic rod 77 is fixedly connected to the top of the fixing frame 5, and the telescopic end of the hydraulic rod 77 is fixedly connected to the top of the feeding tank 7. By starting the hydraulic rod 77, the feeding tank 7 is driven to rise and fall, thereby adjusting the height value of the feeding pipe 71 from the casting.

[0030] Please refer again Figure 1 and Figure 4 A stirring mechanism for stirring the molten metal is installed inside the feeding tank 7, and the stirring mechanism includes a stirring rod 73 rotating inside the feeding tank 7, and a stirring blade 74 is fixedly connected to the stirring rod 73. A feeding pipe 72 is fixedly connected to the feeding tank 7, and a stirring motor 76 for driving the stirring rod 73 to rotate is fixedly connected to the top of the feeding tank 7. The molten metal is injected into the interior of the upper feeding tank 7 through the feeding pipe 72, and the stirring motor 76 is started to drive the stirring rod 73 to rotate inside the feeding tank 7, and the molten metal is stirred by the stirring blade 74. A connecting frame is fixedly connected to the stirring rod 73, and a scraper 75 for scraping the inner wall of the feeding tank 7 is fixedly connected to the other end of the connecting frame. The stirring rod 73 scrapes the inner wall of the feeding tank 7 through the scraper 75 during the rotation process.

[0031] Working principle: connect the device to the municipal power supply, connect the hydraulic rod 77 to the hydraulic control system, connect the other end of the connecting hose 62 to the cold air device, place the casting on the top of the mounting plate 3, drive the bidirectional screw 32 to rotate, and under the action of the two sliding blocks 41, the two movable plates 4 are brought close to each other to clamp and fix the casting, and then pour the molten metal into the feeding tank 7 through the feeding pipe 72, heat the molten metal in the feeding tank 7 by starting the electric heating pipe 8, and drive the stirring rod 73 to rotate by starting the stirring motor 76, so that the stirring blade 74 is used to The molten metal inside the material tank 7 is stirred to reduce the possibility of solidification of the molten metal. The electric valve on the discharge pipe 71 is opened to allow the molten metal to be introduced into the pores on the surface of the casting. The cross slide rail 2 is provided to drive the fixed sand casting to move in the XY axis direction. The cold air is transported to the inside of the movable ring 6 through the connecting hose 62, and then sprayed out through the air jet hole 61 to cool the casting. The servo motor 92 is started to drive the adjusting screw 9 to rotate, and the movable ring 6 is driven to rise and fall under the connection of the connecting plate 91, thereby comprehensively cooling the casting with cold air.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for removing pores from the surface of a sand casting, comprising a fixing seat (1), characterized in that: The top of the fixed seat (1) is fixedly connected with a cross slide rail (2) and a fixed frame (5); the cross slide rail (2) is fixedly connected with a mounting plate (3); the mounting plate (3) is slidably connected with two movable plates (4) for clamping the casting; the fixed frame (5) is slidably connected with a connecting plate (91); one end of the connecting plate (91) is fixedly connected with a movable ring (6); the movable ring (6) is hollow; the inner wall of the movable ring (6) is provided with a circumferential array of jet holes (61); a feeding tank (7) is installed directly above the mounting plate (3); a feeding pipe (71) is fixedly connected to the bottom of the feeding tank (7); an electric valve is fixedly connected to the feeding pipe (71); an electric heating pipe (8) is inlaid on the inner wall of the feeding tank (7); and a stirring mechanism for stirring the molten metal is installed inside the feeding tank (7).

2. The device for removing pores from the surface of a sand casting according to claim 1, characterized in that: An adjusting screw (9) is rotatably connected to the fixing frame (5), one end of the connecting plate (91) is threadedly connected to the adjusting screw (9), and a servo motor (92) for driving the adjusting screw (9) to rotate is fixedly connected to the fixing frame (5).

3. The device for removing pores from the surface of a sand casting according to claim 1, characterized in that: A sliding groove (31) is provided on the top of the mounting plate (3), a sliding block (41) is fixedly connected to the bottom of the movable plate (4), the sliding block (41) is slidably connected to the inside of the sliding groove (31), a bidirectional screw (32) is rotatably connected to the inside of the sliding groove (31), and the sliding block (41) is threadedly connected to the bidirectional screw (32).

4. The device for removing pores from the surface of a sand casting according to claim 1, characterized in that: The stirring mechanism comprises a stirring rod (73) rotating inside the feeding tank (7), and a stirring blade (74) is fixedly connected to the stirring rod (73).

5. The device for removing pores from the surface of a sand casting according to claim 4, characterized in that: A feeding pipe (72) is fixedly connected to the feeding tank (7), and a stirring motor (76) for driving a stirring rod (73) to rotate is fixedly connected to the top of the feeding tank (7).

6. The device for removing pores from the surface of a sand casting according to claim 5, characterized in that: A connecting frame is fixedly connected to the stirring rod (73), and a scraper (75) for scraping the inner wall of the feeding tank (7) is fixedly connected to the other end of the connecting frame.

7. The device for removing pores from the surface of a sand casting according to claim 1, characterized in that: A hydraulic rod (77) is fixedly connected to the top of the fixed frame (5), and a telescopic end of the hydraulic rod (77) is fixedly connected to the top of the loading tank (7).

8. The device for removing pores from the surface of a sand casting according to claim 1, characterized in that: The inner diameter of the movable circular ring (6) is greater than the maximum width of the mounting plate (3), and a connecting hose (62) is fixedly connected to the movable circular ring (6).

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