Vacuum die-casting device and method with anti-blocking function

Abstract

The invention discloses a vacuum die-casting device and method with an anti-clogging function, and relates to the technical field of vacuum die-casting. The vacuum die-casting device with an anti-clogging function comprises a fixed mold, a movable mold and a cavity, the vacuum pump is connected to a negative pressure tank through a vacuum tube, the negative pressure tank is connected to a working tank through a negative pressure tube, a two-way valve is installed at the bottom of the working tank, the two-way valve is connected to the cavity through an air suction pipe, a stop valve is installed on the air suction pipe, a driving motor is installed at the top of the working tank, a transmission shaft is installed on the output shaft of the driving motor, a perforation is provided at the top of the working tank, and a cone filter cartridge is rotatably installed in the working tank, the transmission shaft penetrates the perforation and is connected to the cone filter cartridge, the driving motor is started, so that the driving motor can drive the cone filter cartridge to rotate in the working tank through the transmission shaft, and the rotation of the cone filter cartridge can make impurities be tilted downward and thrown away under the centrifugal force, so that the cone filter cartridge can be prevented from being blocked by impurities.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum die-casting, and in particular to a vacuum die-casting device and method with anti-clogging function. Background Art

[0002] Aluminum alloys have advantages such as high specific strength, good processability, and low cost, and are widely used in the automotive, communications, and electronics industries. Die casting is an important precision forming method that is widely used in the manufacture of aluminum alloy components. During die casting, the die casting machine presses the molten metal into the cavity formed by the metal mold at an extremely high speed. After the molten metal cools down, the mold is opened and the casting is taken out. Due to the extremely high filling speed, the gas in the cavity does not have time to be completely discharged and is drawn into the casting to form pores. Vacuum die casting is based on traditional die casting and adds a powerful vacuum system to partially remove the gas in the cavity before filling, thereby reducing gas-induced defects. Compared with traditional die casting, vacuum die casting has the advantages of high casting integrity, heat treatment and strengthening, and weldability, and is being used more and more widely in high-performance structural parts.

[0003] When the existing vacuum die-casting device is evacuating the cavity, it does not have an anti-clogging function, so impurities will clog the filter element during the flow of gas, thereby affecting the evacuation effect of the cavity, causing the vacuum efficiency in the cavity to decrease, resulting in reduced molding quality of the die-casting. Summary of the invention

[0004] The object of the present invention is to provide a vacuum die-casting device and method with anti-clogging function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: the vacuum die-casting device with anti-clogging function comprises a fixed mold, a movable mold and a cavity, the fixed mold is provided with a pressure chamber, a punch is installed in the pressure chamber, and a feed pipe is provided on the pressure chamber, a vacuum pump, a negative pressure tank and a working tank are installed on the fixed mold, the vacuum pump is connected to the negative pressure tank through a vacuum tube, the negative pressure tank is connected to the working tank through a negative pressure tube, a two-way valve is installed at the bottom of the working tank, the two-way valve is connected to the cavity through an air suction pipe, a stop valve is installed on the air suction pipe, a drive motor is installed on the top of the working tank, a transmission shaft is installed on the output shaft of the drive motor, and the working tank is provided with a drive shaft. A perforation is provided on the top of the working tank, and a cone filter cartridge is rotatably installed in the working tank. The transmission shaft passes through the perforation and is connected to the cone filter cartridge. When the molten metal enters the pressure chamber through the feed pipe, the molten metal is transported to the cavity through the punch, and the vacuum pump is started so that the vacuum tube can form a negative pressure in the working tank through the negative pressure tank and the negative pressure tube, so that the suction pipe can inhale the gas in the cavity. At the same time, the drive motor is started so that the drive motor can drive the cone filter cartridge to rotate in the working tank through the transmission shaft. While the cone filter cartridge filters the airflow, the rotation of the cone filter cartridge can allow impurities to be tilted downward and thrown away under the centrifugal force, thereby preventing the cone filter cartridge from being blocked by impurities.

[0006] As an optimal technical solution, the vacuum pump is electrically connected to the two-way valve and the stop valve, and a discharge pipe is installed on the two-way valve. When the vacuum pump is running, the two-way valve controls the suction pipe to be connected. When the vacuum pump stops, the two-way valve can close the suction pipe and open the discharge pipe, and the impurities accumulated in the working tank can be discharged through the discharge pipe.

[0007] As a preferred technical solution, the fixed mold is provided with a primary vacuum utilization component and a secondary vacuum utilization component, and a vacuum tube is used to provide operating driving force for the primary vacuum utilization component and the secondary vacuum utilization component.

[0008] As a preferred technical solution, the first-stage exhaust utilization component includes a cylinder body, an air branch pipe, a piston, a support spring, a piston rod, a sliding hole, an end plate, a touch switch and an air intake valve;

[0009] A cylinder body is installed on the fixed mold, the top of the cylinder body is connected with the vacuum tube through an air branch pipe, and the air branch pipe is a one-way pipe. A piston is slidably installed in the cylinder body, and the piston is connected to the inner top of the cylinder body through a supporting spring. A piston rod is installed at the bottom of the piston, and a sliding hole is opened at the bottom of the cylinder body. The piston rod passes through the sliding hole and is slidingly matched. An end plate is installed at the bottom of the piston rod, and a touch switch is installed on the end plate. An intake valve is installed on the top of the cylinder body, and the vacuum pump is electrically connected to the intake valve. When the vacuum pump is running, the intake valve is controlled to be closed. When the vacuum tube is running, the vacuum tube can form a negative pressure in the cylinder body through the air branch pipe. The piston in the cylinder body can compress the supporting spring to move upward under the action of the negative pressure. During the upward movement of the piston, the end plate can be driven by the piston rod to move upward synchronously, so that the touch switch on the end plate can be in contact with the cylinder body. When the vacuum pump stops operating, the intake valve is opened, so that the piston in the cylinder body can be moved down and reset under the elastic force of the supporting spring.

[0010] As a preferred technical solution, the first-stage air extraction utilization component also includes a cooling box, a cooling chamber, a first pump, a liquid suction pipe, a liquid infusion pipe, a second pump, a liquid return pipe and a reflux pipe;

[0011] A cooling box is installed on the fixed mold, and a cooling cavity is provided in the fixed mold, a refrigerator is installed in the cooling box, and a first pump and a second pump are installed on the cooling box, the input end of the first pump is connected to the output end of the cooling box through a suction pipe, and the output end of the first pump is connected to the cooling cavity through an infusion pipe, the input end of the second pump is connected to the cooling cavity through a return pipe, and the output end of the second pump is connected to the input end of the cooling box through a reflux pipe. When the touch switch is squeezed, the first pump and the second pump are operated, and the first pump can transport the cooling liquid in the cooling box to the cooling cavity through the suction pipe and the infusion pipe. At the same time, the second pump can transport the cooling liquid carrying heat in the cooling cavity back to the cooling box through the return pipe and the reflux pipe, so as to facilitate the refrigerator in the cooling box to refrigerate the cooling liquid with heat, thereby realizing the circulating refrigeration of the cooling liquid.

[0012] As a preferred technical solution, the touch switch is electrically connected to the first pump and the second pump, the suction tube and the infusion tube form an infusion channel, and the return tube and the reflux tube form a reflux channel.

[0013] As a preferred technical solution, the secondary air extraction utilization assembly includes a fixed rod, a fixed plate, a rotating shaft, an air turntable, an air suction head, a rotating joint, a connecting pipe, a transmission tooth, a rotating column, a driven tooth, a transmission chain and a stirring plate;

[0014] A fixing rod is installed on the cylinder body, a fixing plate is installed on the fixing rod, a rotating shaft is rotatably installed on the fixing plate, an air turntable is installed on one end of the rotating shaft close to the cylinder body, a plurality of suction heads are directionally installed on the circumferential side wall of the air turntable, and a rotating joint is installed on the end input end of the air turntable, the rotating joint is connected to the infusion pipe and the return pipe through a connecting pipe, a transmission tooth is installed on the other end of the rotating shaft, a rotating column is rotatably installed on the cooling box, a driven tooth is installed on the end of the rotating column, a transmission chain is sleeved on the driven tooth and the transmission tooth, and the rotating column A plurality of stirring plates are installed on it. When the coolant is transported quickly in the infusion pipe and the return pipe, an air suction effect can be formed in the air turntable through the connecting pipe, so that the air turntable can inhale external airflow through the air suction head. The air turntable can be driven to rotate under the driving force of the airflow. During the rotation of the air turntable, the transmission gear can be driven to rotate through the rotating shaft. Under the transmission of the transmission gear, the driven gear and the sprocket teeth of the transmission chain, the driven gear can drive the stirring plate to rotate in the cooling box through the rotating column, which is beneficial to increase the contact area between the refrigerator and the coolant and improve the cooling effect of the refrigerator on the coolant.

[0015] As a preferred technical solution, the connecting pipe is a one-way pipe, and the multiple suction heads are arranged in a circle.

[0016] The present invention provides a die-casting method for a vacuum die-casting device with an anti-clogging function, the steps of which are:

[0017] S10, closing the movable mold and the fixed mold;

[0018] S20, conveying the molten metal into the pressing chamber through the feed pipe;

[0019] S30, start the punch to transport the molten metal in the pressure chamber into the mold cavity, and at the same time, start the vacuum pump;

[0020] S40, allowing the working tank to inhale the gas in the cavity through the suction pipe;

[0021] S50, start the driving motor so that the transmission shaft can drive the cone filter cartridge to rotate in the working tank;

[0022] S60. The rotating energy of the cone filter is used to make the impurities roll down obliquely.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] When the molten metal enters the pressure chamber through the feed pipe, the molten metal is transported to the cavity through the punch, and the vacuum pump is started so that the vacuum tube can form negative pressure in the working tank through the negative pressure tank and the negative pressure tube, so that the suction pipe can inhale the gas in the cavity. At the same time, the drive motor is started so that the drive motor can drive the cone filter to rotate in the working tank through the transmission shaft. While the cone filter is filtering the airflow, the rotation of the cone filter can allow impurities to be tilted downward and thrown away under the centrifugal force, thereby preventing the cone filter from being blocked by impurities.

[0025] The present application utilizes the pressure difference to form a negative pressure in the cylinder body, so that the touch switch on the end plate can contact the cylinder body, and the first pump and the second pump can be operated. The circulation of the coolant can be realized through the infusion channel and the reflux channel, which facilitates the refrigeration of the coolant by the refrigerator and ensures the recycling of the coolant.

[0026] The present application can drive the air turntable to rotate under the action of airflow, and then drive the stirring plate to rotate in the cooling box through the transmission teeth, driven teeth and sprocket teeth of the transmission chain, which is beneficial to increase the contact area between the refrigerator and the coolant and improve the cooling effect of the refrigerator on the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0028] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0029] Figure 3 It is a schematic diagram of the cutaway structure of the present invention;

[0030] Figure 4 for Figure 2 A is an enlarged structural diagram;

[0031] Figure 5 for Figure 3 The enlarged structural diagram at B in FIG.

[0032] Figure 6 yes Figure 2 The enlarged structural diagram at C in FIG.

[0033] Figure 7 yes Figure 3 The enlarged structural diagram at D in the figure.

[0034] In the figure: 1, fixed mold; 2, movable mold; 3, cavity; 4, pressure chamber; 5, punch; 6, feed pipe; 7, vacuum pump; 8, negative pressure tank; 9, working tank; 10, vacuum tube; 11, negative pressure tube; 12, two-way valve; 13, suction pipe; 14, stop valve; 15, discharge pipe; 16, drive motor; 17, transmission shaft; 18, perforation; 19, cone filter cartridge;

[0035] 20. First-stage exhaust assembly; 2001. Cylinder; 2002. Air branch pipe; 2003. Piston; 2004. Support spring; 2005. Piston rod; 2006. Sliding hole; 2007. End plate; 2008. Touch switch; 2009. Inlet valve; 2010. Cooling box; 2011. Cooling chamber; 2012. First pump; 2013. Suction pipe; 2014. Infusion pipe; 2015. Second pump; 2016. Liquid return pipe; 2017. Reflux pipe;

[0036] 21. Secondary air extraction utilization assembly; 2101. Fixed rod; 2102. Fixed plate; 2103. Rotating shaft; 2104. Air turntable; 2105. Suction head; 2106. Rotating joint; 2107. Connecting pipe; 2108. Transmission gear; 2109. Rotating column; 2110. Driven gear; 2111. Transmission chain; 2112. Stirring plate. DETAILED DESCRIPTION

[0037] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0038] Example: Figure 1-Figure 5As shown, the present invention provides a vacuum die-casting device with an anti-clogging function, characterized in that: the vacuum die-casting device with an anti-clogging function comprises a fixed mold 1, a movable mold 2 and a cavity 3, the fixed mold 1 is provided with a pressure chamber 4, a punch 5 is installed in the pressure chamber 4, and a feed pipe 6 is provided on the pressure chamber 4, a vacuum pump 7, a negative pressure tank 8 and a working tank 9 are installed on the fixed mold 1, the vacuum pump 7 is connected to the negative pressure tank 8 through a vacuum tube 10, the negative pressure tank 8 is connected to the working tank 9 through a negative pressure tube 11, a two-way valve 12 is installed at the bottom of the working tank 9, the two-way valve 12 is connected to the cavity 3 through an air suction pipe 13, a stop valve 14 is installed on the air suction pipe 13, a drive motor 16 is installed on the top of the working tank 9, and a transmission shaft 1 is installed on the output shaft of the drive motor 16 7. A through hole 18 is provided on the top of the working tank 9, and a cone filter cartridge 19 is rotatably installed in the working tank 9. The transmission shaft 17 passes through the through hole 18 and is connected to the cone filter cartridge 19. When the molten metal enters the pressure chamber 4 through the feed pipe 6, the molten metal is transported to the cavity 3 through the punch 5, and the vacuum pump 7 is started, so that the vacuum tube 10 can form a negative pressure in the working tank 9 through the negative pressure tank 8 and the negative pressure tube 11, so that the suction pipe 13 can inhale the gas in the cavity 3. At the same time, the drive motor 16 is started, so that the drive motor 16 can drive the cone filter cartridge 19 to rotate in the working tank 9 through the transmission shaft 17. While filtering the airflow, the rotation of the cone filter cartridge 19 can allow impurities to be tilted downward and thrown away under the centrifugal force, so that the cone filter cartridge 19 can be prevented from being blocked by impurities.

[0039] The vacuum pump 7 is electrically connected to the two-way valve 12 and the stop valve 14. A discharge pipe 15 is installed on the two-way valve 12. When the vacuum pump 7 is running, the two-way valve 12 controls the suction pipe 13 to be connected. When the vacuum pump 7 stops running, the two-way valve 12 can close the suction pipe 13 and open the discharge pipe 15. Impurities accumulated in the working tank 9 can be discharged through the discharge pipe 15.

[0040] The fixed mold 1 is provided with a primary vacuum utilization component 20 and a secondary vacuum utilization component 21 , and a vacuum tube 10 is used to provide operating driving force for the primary vacuum utilization component 20 and the secondary vacuum utilization component 21 .

[0041] like Figure 1-Figure 4 and Figure 6-Figure 7 As shown, the first-stage air extraction component 20 includes a cylinder 2001, an air branch pipe 2002, a piston 2003, a support spring 2004, a piston rod 2005, a sliding hole 2006, an end plate 2007, a touch switch 2008 and an air intake valve 2009;

[0042] The fixed mold 1 is provided with a cylinder body 2001, the top of the cylinder body 2001 is connected to the vacuum tube 10 through an air branch pipe 2002, the air branch pipe 2002 is a one-way pipe, a piston 2003 is slidably installed in the cylinder body 2001, the piston 2003 is connected to the inner top of the cylinder body 2001 through a supporting spring 2004, a piston rod 2005 is installed at the bottom of the piston 2003, a sliding hole 2006 is provided at the bottom of the cylinder body 2001, the piston rod 2005 passes through the sliding hole 2006 and is a sliding fit, an end plate 2007 is installed at the bottom of the piston rod 2005, a touch switch 2008 is installed on the end plate 2007, and an air intake valve 200 is installed at the top of the cylinder body 2001. 9. The vacuum pump 7 is electrically connected to the air inlet valve 2009. When the vacuum pump 7 is in operation, the air inlet valve 2009 is controlled to be closed. When the vacuum tube 10 is in operation, the vacuum tube 10 can form a negative pressure in the cylinder body 2001 through the gas branch pipe 2002. The piston 2003 in the cylinder body 2001 can compress the support spring 2004 to move upward under the action of the negative pressure. During the upward movement, the piston 2003 can drive the end plate 2007 to move upward synchronously through the piston rod 2005, so that the touch switch 2008 on the end plate 2007 can contact the cylinder body 2001. When the vacuum pump 7 stops operating, the air inlet valve 2009 is opened, so that the piston 2003 in the cylinder body 2001 can move downward and reset under the elastic force of the support spring 2004.

[0043] The primary air extraction component 20 further includes a cooling box 2010, a cooling chamber 2011, a first pump 2012, a liquid suction pipe 2013, a liquid infusion pipe 2014, a second pump 2015, a liquid return pipe 2016 and a reflux pipe 2017;

[0044] A cooling box 2010 is installed on the fixed mold 1, and a cooling cavity 2011 is provided in the fixed mold 1. A refrigerator is installed in the cooling box 2010. A first pump 2012 and a second pump 2015 are installed on the cooling box 2010. The input end of the first pump 2012 is connected to the output end of the cooling box 2010 through a suction pipe 2013, and the output end of the first pump 2012 is connected to the cooling cavity 2011 through a liquid infusion pipe 2014. The input end of the second pump 2015 is connected to the cooling cavity 2011 through a liquid return pipe 2016, and the output end of the second pump 2015 is connected to the cooling box 2010. The input end is connected through the reflux pipe 2017. When the touch switch 2008 is squeezed, the first pump 2012 and the second pump 2015 are in operation. The first pump 2012 can transport the coolant in the cooling box 2010 to the cooling chamber 2011 through the suction pipe 2013 and the infusion pipe 2014. At the same time, the second pump 2015 can transport the coolant carrying heat in the cooling chamber 2011 back to the cooling box 2010 through the return pipe 2016 and the reflux pipe 2017, so as to facilitate the refrigerator in the cooling box 2010 to refrigerate the coolant carrying heat, thereby realizing the circulation refrigeration of the coolant.

[0045] The touch switch 2008 is electrically connected to the first pump 2012 and the second pump 2015 . The suction tube 2013 and the infusion tube 2014 form an infusion channel. The return tube 2016 and the reflux tube 2017 form a reflux channel.

[0046] like Figure 1-Figure 3 and Figure 6-Figure 7 As shown, the secondary air extraction utilization assembly 21 includes a fixed rod 2101, a fixed plate 2102, a rotating shaft 2103, an air turntable 2104, an air suction head 2105, a rotating joint 2106, a connecting pipe 2107, a transmission gear 2108, a rotating column 2109, a driven gear 2110, a transmission chain 2111 and a stirring plate 2112;

[0047] A fixing rod 2101 is installed on the cylinder body 2001, a fixing plate 2102 is installed on the fixing rod 2101, a rotating shaft 2103 is rotatably installed on the fixing plate 2102, an air turntable 2104 is installed on one end of the rotating shaft 2103 close to the cylinder body 2001, a plurality of suction heads 2105 are directionally installed on the circumferential side wall of the air turntable 2104, and a rotating joint 2106 is installed on the end input end of the air turntable 2105, the rotating joint 2106 is connected to the infusion tube 2014 and the return tube 2016 through a connecting tube 2107, a transmission tooth 2108 is installed on the other end of the rotating shaft 2103, a rotating column 2109 is rotatably installed on the cooling box 2010, a driven tooth 2110 is installed on the end of the rotating column 2109, and the driven tooth 2110 is sleeved on the transmission tooth 2108 A transmission chain 2111 is provided, and a plurality of stirring plates 2112 are installed on the rotating column 2109. When the coolant is quickly transported in the infusion tube 2014 and the return tube 2016, an air suction effect can be formed in the gas turntable 2104 through the connecting tube 2107, so that the gas turntable 2104 can inhale external airflow through the suction head 2105, and the gas turntable 2104 can be driven to rotate under the driving force of the airflow. During the rotation of the gas turntable 2104, the transmission gear 2108 can be driven to rotate through the rotating shaft 2103. Under the transmission of the transmission gear 2108, the driven gear 2110 and the sprocket teeth of the transmission chain 2111, the driven gear 2110 can drive the stirring plate 2112 to rotate in the cooling box 2010 through the rotating column 2109, which is beneficial to increase the contact area between the refrigerator and the coolant and improve the cooling effect of the refrigerator on the coolant.

[0048] The connecting pipe 2107 is a one-way pipe, and the multiple suction heads 2105 are arranged in a circle.

[0049] The present invention provides a die-casting method for a vacuum die-casting device with an anti-clogging function, the steps of which are:

[0050] S10, closing the movable mold 2 and the fixed mold 1;

[0051] S20, transporting the molten metal into the pressure chamber 4 through the feed pipe 6;

[0052] S30, start the punch 5 to transport the molten metal in the pressure chamber 4 to the cavity 3, and at the same time, start the vacuum pump 7;

[0053] S40, allowing the working tank 9 to inhale the gas in the cavity 3 through the suction pipe 13;

[0054] S50, start the driving motor 16, so that the transmission shaft 17 can drive the cone filter cartridge 19 to rotate in the working tank 9;

[0055] S60, utilizing the rotation energy of the cone filter cartridge 19 to make the impurities roll down obliquely.

[0056] Working principle of the present invention:

[0057] When the molten metal enters the pressure chamber 4 through the feed pipe 6, the molten metal is transported to the cavity 3 through the punch 5, and the vacuum pump 7 is started, so that the vacuum tube 10 can form a negative pressure in the working tank 9 through the negative pressure tank 8 and the negative pressure tube 11, so that the suction pipe 13 can inhale the gas in the cavity 3. At the same time, the drive motor 16 is started, so that the drive motor 16 can drive the cone filter cartridge 19 to rotate in the working tank 9 through the transmission shaft 17. While filtering the airflow, the rotation of the cone filter cartridge 19 can allow impurities to be tilted downward and thrown away under the centrifugal force, thereby preventing the cone filter cartridge 19 from being blocked by impurities.

[0058] When the vacuum tube 10 is in operation, the vacuum tube 10 can form a negative pressure in the cylinder body 2001 through the gas branch tube 2002. The piston 2003 in the cylinder body 2001 can compress the support spring 2004 and move upward under the action of the negative pressure. During the upward movement, the piston 2003 can drive the end plate 2007 to move upward synchronously through the piston rod 2005, so that the touch switch 2008 on the end plate 2007 can contact the cylinder body 2001.

[0059] When the touch switch 2008 is squeezed, the first pump 2012 and the second pump 2015 start running. The first pump 2012 can transport the coolant in the cooling box 2010 to the cooling chamber 2011 through the suction tube 2013 and the infusion tube 2014. At the same time, the second pump 2015 can transport the coolant carrying heat in the cooling chamber 2011 back to the cooling box 2010 through the return pipe 2016 and the reflux pipe 2017, so that the refrigerator in the cooling box 2010 can cool the coolant carrying heat, thereby realizing the circulation refrigeration of the coolant.

[0060] When the coolant is transported quickly in the infusion tube 2014 and the return tube 2016, an air suction effect can be formed in the gas turntable 2104 through the connecting tube 2107, so that the gas turntable 2104 can inhale external airflow through the suction head 2105, and the gas turntable 2104 can be driven to rotate under the driving force of the airflow. During the rotation of the gas turntable 2104, the transmission gear 2108 can be driven to rotate through the rotating shaft 2103. Under the sprocket drive of the transmission gear 2108, the driven gear 2110 and the transmission chain 2111, the driven gear 2110 can drive the stirring plate 2112 to rotate in the cooling box 2010 through the rotating column 2109, which is beneficial to increase the contact area between the refrigerator and the coolant and improve the cooling effect of the refrigerator on the coolant.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vacuum die-casting device with anti-clogging function, characterized in that: The vacuum die-casting device with anti-clogging function comprises a fixed die (1), a movable die (2) and a cavity (3); the fixed die (1) is provided with a pressure chamber (4), a punch (5) is installed in the pressure chamber (4), and a feed pipe (6) is provided on the pressure chamber (4); a vacuum pump (7), a negative pressure tank (8) and a working tank (9) are installed on the fixed die (1); the vacuum pump (7) and the negative pressure tank (8) are connected via a vacuum tube (10); the negative pressure tank (8) and the working tank (9) are connected via a negative pressure tube (11); and the working tank (9) is provided with a vacuum pump (7), a negative pressure tank (8) and a working tank (9) via a vacuum tube (11). A two-way valve (12) is installed at the bottom, the two-way valve (12) is connected to the mold cavity (3) via an air suction pipe (13), a stop valve (14) is installed on the air suction pipe (13), a drive motor (16) is installed on the top of the working tank (9), a transmission shaft (17) is installed on the output shaft of the drive motor (16), a through hole (18) is opened on the top of the working tank (9), and a cone filter cartridge (19) is rotatably installed in the working tank (9), and the transmission shaft (17) passes through the through hole (18) and is connected to the cone filter cartridge (19); The fixed mold (1) is provided with a primary exhaust utilization component (20) and a secondary exhaust utilization component (21), and a vacuum tube (10) is used to provide operating driving force for the primary exhaust utilization component (20) and the secondary exhaust utilization component (21); The first-stage air extraction utilization component (20) comprises a cylinder body (2001), an air branch pipe (2002), a piston (2003), a support spring (2004), a piston rod (2005), a sliding hole (2006), an end plate (2007), a touch switch (2008) and an air intake valve (2009); The fixed mold (1) is provided with a cylinder body (2001), the top of the cylinder body (2001) is connected to the vacuum tube (10) via an air branch pipe (2002), the air branch pipe (2002) is a one-way pipe, a piston (2003) is slidably installed in the cylinder body (2001), the piston (2003) is connected to the inner top of the cylinder body (2001) via a supporting spring (2004), a piston rod (2005) is installed at the bottom of the piston (2003), and the cylinder body (2001) is provided with a piston rod (2005). 1) is provided with a sliding hole (2006) at the bottom, the piston rod (2005) passes through the sliding hole (2006) and is slidably fitted, an end plate (2007) is installed at the bottom of the piston rod (2005), a touch switch (2008) is installed on the end plate (2007), an air intake valve (2009) is installed at the top of the cylinder body (2001), the vacuum pump (7) is electrically connected to the air intake valve (2009), and the air intake valve (2009) is controlled to be closed when the vacuum pump (7) is in operation; The primary air extraction utilization component (20) further comprises a cooling box (2010), a cooling chamber (2011), a first pump (2012), a liquid suction tube (2013), a liquid infusion tube (2014), a second pump (2015), a liquid return tube (2016) and a reflux tube (2017); A cooling box (2010) is installed on the fixed mold (1), and a cooling chamber (2011) is provided in the fixed mold (1), a refrigerator is installed in the cooling box (2010), and a first pump (2012) and a second pump (2015) are installed on the cooling box (2010), the input end of the first pump (2012) is connected to the output end of the cooling box (2010) via a liquid suction pipe (2013), and the output end of the first pump (2012) is connected to the cooling chamber (2011) via a liquid infusion pipe (2014), the input end of the second pump (2015) is connected to the cooling chamber (2011) via a liquid return pipe (2016), and the output end of the second pump (2015) is connected to the input end of the cooling box (2010) via a return pipe (2017); The touch switch (2008) is electrically connected to the first pump (2012) and the second pump (2015); the liquid suction tube (2013) and the liquid infusion tube (2014) form a liquid infusion channel; and the liquid return tube (2016) and the reflux tube (2017) form a reflux channel; The air extraction secondary utilization component (21) comprises a fixed rod (2101), a fixed plate (2102), a rotating shaft (2103), an air turntable (2104), an air suction head (2105), a rotating joint (2106), a connecting pipe (2107), a transmission tooth (2108), a rotating column (2109), a driven tooth (2110), a transmission chain (2111) and a stirring plate (2112); The cylinder body (2001) is mounted with a fixing rod (2101), the fixing rod (2101) is mounted with a fixing plate (2102), a rotating shaft (2103) is rotatably mounted on the fixing plate (2102), an air turntable (2104) is mounted on one end of the rotating shaft (2103) close to the cylinder body (2001), a plurality of suction heads (2105) are directionally mounted on the circumferential side wall of the air turntable (2104), and a rotating joint (2106) is mounted on the end input end of the air turntable (2104), the rotating joint (2106) is connected to the infusion tube (214) and the return tube (216) via a connecting tube (2107); a transmission tooth (2108) is installed at the other end of the rotating shaft (2103); a rotating column (2109) is rotatably installed on the cooling box (210); a driven tooth (2110) is installed at the end of the rotating column (2109); a transmission chain (2111) is sleeved on the driven tooth (2110) and the transmission tooth (2108); and a plurality of stirring plates (2112) are installed on the rotating column (2109); The connecting pipe (2107) is a one-way pipe, and the plurality of suction heads (2105) are arranged in a circle.

2. The vacuum die-casting device with anti-clogging function according to claim 1, characterized in that: The vacuum pump (7) is electrically connected to a two-way valve (12), and a discharge pipe (15) is installed on the two-way valve (12). When the vacuum pump (7) is running, the two-way valve (12) controls the suction pipe (13) to be connected.

3. A die-casting method for a vacuum die-casting device with an anti-clogging function according to any one of claims 1 to 2, wherein the steps are: S10, closing the movable mold (2) and the fixed mold (1); S20, conveying the molten metal into the pressure chamber (4) through the feed pipe (6); S30, starting the punch (5) to transfer the molten metal in the pressure chamber (4) into the mold cavity (3), and at the same time, starting the vacuum pump (7); S40, allowing the working tank (9) to absorb the gas in the cavity (3) through the suction pipe (13); S50, starting the driving motor (16) so that the transmission shaft (17) can drive the cone filter cartridge (19) to rotate in the working tank (9); S60. The rotation energy of the cone filter cartridge (19) is utilized to cause the impurities to roll down obliquely.

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