Casting process

Abstract

The invention relates to the field of casting, in particular to a casting process which comprises the following steps: step 1, heating and melting metal to be treated into liquid metal; secondly, liquid metal is injected into a die-casting device under the pressure effect; thirdly, the metal rod makes contact with the overflowing liquid metal; fourthly, after the liquid metal is cooled and formed in the cavity, the metal rod and the formed workpiece are fixed into a whole; fifthly, the metal rod rotates to drive the formed workpiece to rotate, and meanwhile surface sand blasting treatment is conducted on the formed workpiece; 6, the sprayed sand is collected and treated; seventhly, sand attached to the surface of the formed workpiece is removed through wind power; 8, the joint of the metal rod and the formed workpiece is cut off, so that the metal rod is separated from the formed workpiece; by means of the sand blasting device, sand blasting treatment can be conducted on a formed workpiece during die-casting demolding.

Description

Technical Field

[0001] This invention relates to the field of casting, and more particularly to a casting process. Background Technology

[0002] Die casting is a metal casting process characterized by applying high pressure to molten metal within a mold cavity. The mold is typically made of a high-strength alloy, and the process is somewhat similar to injection molding. Most die-cast parts are iron-free, such as those made of zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys. Depending on the type of die casting, either a cold chamber die casting machine or a hot chamber die casting machine is required. Generally, after the metal die casting is completed, the formed workpiece needs to be sandblasted to make the surface smoother. However, the workpiece is too hot to move immediately after being taken out of the die casting machine, and it needs to be cooled to room temperature, which wastes time. Summary of the Invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a casting process that enables sandblasting of the formed workpiece during die casting demolding.

[0004] A casting process includes the following steps:

[0005] Step 1: Heat the metal to be processed until it melts into a liquid metal;

[0006] Step 2: Inject the liquid metal into the die-casting device under pressure;

[0007] Step 3: Bring the metal rod into contact with the overflowing liquid metal;

[0008] Step 4: After the liquid metal cools and solidifies in the cavity, fix the metal rod to the formed workpiece as one piece;

[0009] Step 5: Use the rotating metal rod to drive the formed workpiece to rotate, and at the same time, perform surface sandblasting on the formed workpiece;

[0010] Step Six: Collect and process the ejected sand;

[0011] Step 7: Use wind power to remove the sand adhering to the surface of the molded workpiece;

[0012] Step 8: Cut off the connection between the metal rod and the formed workpiece to separate the metal rod from the formed workpiece.

[0013] The metal to be processed is selected from one of aluminum, copper, zinc, aluminum alloy, zinc alloy, and copper alloy.

[0014] The metal rod and the metal to be processed are made of the same metal material.

[0015] In step four, the cooling and molding process involves natural cooling at room temperature.

[0016] The specific operation of the sandblasting process is as follows: using a sandblasting machine to sandblast the surface of the formed workpiece.

[0017] The sandblasting process uses one of the following: corundum, quartz sand, white corundum, and brown corundum.

[0018] The die-casting device includes a processing box, on which two hydraulic cylinders are fixedly connected. The moving ends of the two hydraulic cylinders are fixedly connected to mold bases, which are fastened together to form a complete mold. One mold base is fixedly connected to a liquid inlet pipe, which communicates with the cavity of the mold base. Both mold bases have slots at their upper ends, which are joined together to form a conical hole. One mold base has multiple guide rods fixedly connected to it, and the other mold base has multiple guide holes. A support frame is fixedly connected to the processing box, and a metal rod is rotatably connected to the support frame. A gear is fixedly connected to the upper end of the metal rod. Both mold bases have racks fixedly connected to their upper ends, and both racks mesh with the gears. Sandblasting heads are fixedly connected to both the front and rear ends of the processing box. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1-3 This is a flowchart illustrating a casting process.

[0021] Figure 4 and Figure 5 This is a schematic diagram of the overall structure of the die-casting device;

[0022] Figure 6 This is a schematic diagram of the structure of a cleaver;

[0023] Figure 7 This is a schematic diagram of the shield structure;

[0024] Figure 8 This is a schematic diagram of the gear structure;

[0025] Figure 9 This is a schematic diagram of the mold base structure;

[0026] Figure 10 This is a sectional view of the processing box. Detailed Implementation

[0027] A casting process includes the following steps:

[0028] Step 1: Heat the metal to be processed until it melts into a liquid metal;

[0029] Step 2: Inject the liquid metal into the die-casting device under pressure;

[0030] Step 3: Bring the metal rod into contact with the overflowing liquid metal;

[0031] Step 4: After the liquid metal cools and solidifies in the cavity, fix the metal rod to the formed workpiece as one piece;

[0032] Step 5: Use the rotating metal rod to drive the formed workpiece to rotate, and at the same time, perform surface sandblasting on the formed workpiece;

[0033] Step Six: Collect and process the ejected sand;

[0034] Step 7: Use wind power to remove the sand adhering to the surface of the molded workpiece;

[0035] Step 8: Cut off the connection between the metal rod and the formed workpiece to separate the metal rod from the formed workpiece.

[0036] The metal to be processed is selected from one of aluminum, copper, zinc, aluminum alloy, zinc alloy, and copper alloy.

[0037] The metal rod and the metal to be processed are made of the same metal material.

[0038] In step four, the cooling and molding process involves natural cooling at room temperature.

[0039] The specific operation of the sandblasting process is as follows: using a sandblasting machine to sandblast the surface of the formed workpiece.

[0040] The sandblasting process uses one of the following: corundum, quartz sand, white corundum, and brown corundum.

[0041] See Figure 4-9 The diagram shows a schematic representation of an embodiment of the present invention that enables sandblasting of the molded workpiece during die casting demolding. Further,

[0042] The die-casting apparatus includes a processing box 101, on which two hydraulic cylinders 203 are bolted. The moving ends of both hydraulic cylinders 203 are bolted to mold bases 201. The two mold bases 201 are fastened together to form a complete mold. A liquid inlet pipe 204 is welded and fixedly connected to one of the mold bases, communicating with the cavity of the mold base 201. Both mold bases 201 have slots 202 at their upper ends, which are joined to form a conical hole. One of the mold bases 201 is bolted to... Multiple guide rods 205 are fixedly connected to the treatment box 101. Multiple guide holes 206 are opened on the other mold base 201. A support frame 301 is fixedly connected to the treatment box 101 by bolts. A metal rod 302 is rotatably connected to the support frame 301 by bearings. A gear 303 is fixedly connected to the upper end of the metal rod 302 by a key. A rack 304 is fixedly connected to the upper end of both mold bases 201 by bolts. Both racks 304 mesh with the gear 303. Sandblasting heads 102 are fixedly connected to both the front and rear ends of the treatment box 101 by bolts.

[0043] When using the die-casting device, the moving ends of two hydraulic cylinders 203 are first extended to drive the two mold bases 201 to move towards the middle. With the cooperation of multiple guide rods 205 and multiple guide holes 206, the two mold bases 201 are snapped together to form a complete mold. Then, the molten liquid metal is injected into the cavity between the two mold bases 201 under pressure through the liquid inlet pipe 204. When the two mold bases 201 are snapped together, the slots 202 at the upper ends of the two mold bases 201 are joined to form a conical hole. When the liquid metal is injected into the cavity, the excess air in the cavity is discharged through the conical hole. After the liquid metal is injected, some liquid metal overflows through the conical hole. The overflowing liquid metal comes into contact with the metal rod 302. The metal rod 302 and the liquid metal are made of the same metal material.

[0044] After the liquid metal in the cavity cools and solidifies, the metal rod 302 is fixed to the formed workpiece by the overflowing liquid metal. At this time, the moving ends of the two hydraulic cylinders 203 are controlled to retract, which drives the two mold bases 201 to separate, so that the formed workpiece is separated from the two mold bases 201. When the formed workpiece is completely separated from the two mold bases 201, the racks 304 on the upper end of the two mold bases 201 mesh with the gears 303. While the two mold bases 201 move, the metal rod 302 is driven to rotate through the gears 303. The metal rod 302 drives the formed workpiece to rotate. At this time, the sandblasting machine is connected to the two sandblasting heads 102. The two sandblasting heads 102 are used to sandblast the formed workpiece, so that the surface of the workpiece changes from rough to smooth. With the rotation of the metal rod 302, the surface of the formed workpiece can be sandblasted.

[0045] After the sandblasting process is completed, the formed workpiece can be removed by cutting it off from the metal rod 302.

[0046] See Figure 10 A schematic diagram of an embodiment capable of storing ejected sand according to the present invention is shown, further,

[0047] The lower end of the treatment box 101 is provided with a sand storage chamber 104. Multiple slots 103 are provided on the bottom surface of the treatment box 101. An air extraction pipe 106 is fixedly connected to the upper part of the treatment box 101 by bolts. An air pump is installed on the air extraction pipe 106. The air inlet pipe of the air pump is connected to the air extraction pipe 106. The air outlet pipe of the air pump is connected to the external connection. The air extraction pipe 106 is connected to the sand storage chamber 104. A filter bag 105 is fixedly connected to the sand storage chamber 104 by bolts. The filter bag 105 covers the air extraction pipe 106.

[0048] When the molded workpiece is sandblasted, the sand that is sprayed falls to the bottom of the treatment box 101 and is discharged into the sand storage chamber 104 through multiple troughs 103. The sand storage chamber 104 serves to store the sand and facilitates its recycling.

[0049] Air is drawn from the sand storage chamber 104 by an air pump, so that the sprayed sand quickly enters the treatment box 101 to reduce dust. The filter bag 105 filters the sand and allows it to enter the air pump.

[0050] See Figure 10 The diagram shows an embodiment of the present invention in which the metal rod 302 can be detached from the formed workpiece. Further,

[0051] The support frame 301 is rotatably connected to two grooved rods 401 via bearings. The lower ends of the two grooved rods 401 are fixedly connected to a chopping blade 402 by bolts. The upper end of the support frame 301 is fixedly connected to a double-headed cylinder 405 by bolts. The two moving ends of the double-headed cylinder 405 are slidably connected in the grooves of the two grooved rods 401 respectively.

[0052] After sandblasting the shaped workpiece, the two moving ends of the double-headed cylinder 405 are extended to drive the two grooved rods 401 to rotate outwards respectively. The two grooved rods 401 drive the two cutting blades 402 to move closer to the center. The two cutting blades 402 work together to cut off the connection between the metal rod 302 and the shaped workpiece, so that the metal rod 302 is separated from the shaped workpiece and the shaped workpiece falls to the bottom of the processing box 101.

[0053] See Figure 6-7 The diagram shows an embodiment of the present invention capable of multi-angle cleaning of a molded workpiece. Further,

[0054] Both blades 402 have baffles 403 welded and fixed to their bottom surfaces. Both baffles 403 are bolted to nozzles 404. Both nozzles 404 are connected to the exhaust pipe of the air pump via hoses.

[0055] When the two blades 402 approach each other, the two nozzles 404 discharge the air from the air pump to blow air onto the surface of the molded workpiece, removing the sand adhering to the surface of the molded workpiece and achieving the cleaning function. By connecting the two nozzles 404 to the exhaust pipe of the air pump, the function of wind power recycling is realized, saving energy.

[0056] The baffle 403 serves to concentrate the airflow, allowing the gas ejected from the nozzle 404 to flow along the bottom surface of the cutter 402. This facilitates the airflow towards the workpiece, reducing airflow loss. Furthermore, as the cutter 402 moves, the nozzle 404 can clean the workpiece from multiple angles.

Claims

1. A casting process, characterized in that, Includes the following steps: Step 1: Heat the metal to be processed until it melts into a liquid metal; Step 2: Inject the liquid metal into the die-casting device under pressure; Step 3: Bring the metal rod into contact with the overflowing liquid metal; Step 4: After the liquid metal cools and solidifies in the cavity, fix the metal rod to the formed workpiece as one piece; Step 5: Use the rotating metal rod to drive the formed workpiece to rotate, and at the same time, perform surface sandblasting on the formed workpiece; Step Six: Collect and process the ejected sand; Step 7: Use wind power to remove the sand adhering to the surface of the molded workpiece; Step 8: Cut off the connection between the metal rod and the formed workpiece to separate the metal rod from the formed workpiece.

2. The casting process according to claim 1, characterized in that: The metal to be processed is selected from one of aluminum, copper, zinc, aluminum alloy, zinc alloy, and copper alloy.

3. The casting process according to claim 1, characterized in that: The metal rod and the metal to be processed are made of the same metal material.

4. The casting process according to claim 1, characterized in that: In step four, the cooling and molding process involves natural cooling at room temperature.

5. The casting process according to claim 1, characterized in that: The specific operation of the sandblasting process is as follows: using a sandblasting machine to sandblast the surface of the formed workpiece.

6. The casting process according to claim 1, characterized in that: The sandblasting process uses one of the following: corundum, quartz sand, white corundum, and brown corundum.

7. The casting process according to claim 1, characterized in that: The die-casting device includes a processing box (101), on which two hydraulic cylinders (203) are fixedly connected. Each of the moving ends of the two hydraulic cylinders (203) is fixedly connected to a mold base (201). The two mold bases (201) are fastened together to form a complete mold. One of the molds is fixedly connected to an inlet pipe (204), which communicates with the cavity of the mold base (201). Both mold bases (201) have slots (202) at their upper ends, which are joined to form a conical hole. One of the mold bases (201) has... Multiple guide rods (205) are fixedly connected, and multiple guide holes (206) are opened on another mold base (201). A support frame (301) is fixedly connected to the processing box (101). A metal rod (302) is rotatably connected to the support frame (301). A gear (303) is fixedly connected to the upper end of the metal rod (302). A rack (304) is fixedly connected to the upper end of both mold bases (201). Both racks (304) mesh with the gears (303). Sandblasting heads (102) are fixedly connected to both the front and rear ends of the processing box (101).

8. A casting process according to claim 7, characterized in that: The processing box (101) has a sand storage chamber (104) at its lower end and multiple drainage grooves (103) on its bottom surface. An air extraction pipe (106) is fixedly connected to the processing box (101). An air pump is installed on the air extraction pipe (106). The air pump's inlet pipe is connected to the air extraction pipe (106), and the air pump's exhaust pipe is connected to an external connection. The air extraction pipe (106) is connected to the sand storage chamber (104). A filter bag (105) is fixedly connected inside the sand storage chamber (104), and the filter bag (105) covers the air extraction pipe (106).

9. A casting process according to claim 7, characterized in that: Two grooved rods (401) are rotatably connected to the support frame (301). A chopping knife (402) is fixedly connected to the lower end of each grooved rod (401). A double-headed cylinder (405) is fixedly connected to the upper end of the support frame (301). The two moving ends of the double-headed cylinder (405) are slidably connected in the grooves of the two grooved rods (401).

10. The casting process according to claim 9, characterized in that: Both of the blades (402) have a baffle (403) fixedly connected to their bottom surfaces. Both baffles (403) have a nozzle (404) fixedly connected to them. Both nozzles (404) are connected to the exhaust pipe of the air pump through a hose.

Images