Precise hot-pressing device for aluminum-zinc alloy die casting and using method of precise hot-pressing device

Abstract

The invention discloses a precise hot pressing device for aluminum-zinc alloy die casting and a using method of the precise hot pressing device, and relates to the technical field of hot die casting equipment. According to the precise hot pressing device for aluminum-zinc alloy die casting and the using method of the precise hot pressing device, the precise hot pressing device for aluminum-zinc alloy die casting comprises a die casting unit, a movable part movably installed on the die casting unit and used for product die casting and a fixed part fixedly installed on the die casting unit and used for product die casting, and the fixed part is provided with a cooling assembly used for product cooling and a heat exchange assembly used for uniform cooling. The cooling assembly comprises an electric push rod fixed to the fixing part and used for driving the cooling assembly to operate and an extension part fixed to the fixing part and used for switching cooling modes, the situation that the crack risk is increased due to the fact that large thermal stress is generated in the casting due to the too high cooling speed is avoided, meanwhile, the fixing part and the forming block are evenly cooled, and the casting quality is improved. And the situation that the casting deforms or generates internal stress due to the fact that some areas are too cold and other areas are still hot is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hot die casting equipment, and in particular to a precision hot pressing device for aluminum-zinc alloy die casting and a use method thereof. Background Art

[0002] Aluminum-zinc alloy is widely used in the manufacture of parts in various industrial fields due to its good casting performance, high strength-to-weight ratio, excellent corrosion resistance and relatively low cost. In the aluminum-zinc alloy die-casting process, a die-casting machine is usually used to inject the aluminum-zinc alloy melt into the mold under high pressure, and the required parts are formed after cooling. When using hot pressing equipment to die-cast aluminum-zinc alloy products, a cooling water channel is usually set inside the mold to remove heat through circulating cooling water. Sometimes the cooling water is replaced with cooling oil. However, the existing cooling water channel is prone to uneven distribution of the water channel during the cooling process of the product, and the cooling speed in some areas is too fast, resulting in greater thermal stress inside the casting, increasing the risk of cracks in the product;

[0003] For example, a front cover die-casting mold and die-casting process disclosed in announcement number CN114603110A adopts the method of opening cooling water channels and injecting coolant or cooling oil into the cooling water channels to cool and shape the product. However, it is easy to have uneven distribution of water channels and excessive cooling speed in some areas, which results in large thermal stress inside the casting and increases the risk of cracks in the product. A dual clutch valve body production method disclosed in announcement number CN102688998A also adopts the method of opening cooling water channels to cool and shape the product. However, it is easy to have uneven distribution of water channels and excessive cooling speed in some areas, which results in large thermal stress inside the casting and increases the risk of cracks in the product.

[0004] Therefore, a precision hot pressing device for aluminum-zinc alloy die-casting and a method for using the same are proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a precision hot pressing device for aluminum-zinc alloy die-casting and a method for using the same, which solves the problem that in the process of cooling the product through the existing cooling water channels, the water channels are prone to uneven distribution, and the cooling speed in some areas is too fast, resulting in greater thermal stress inside the casting and increasing the risk of cracks in the product.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A precision hot pressing device for aluminum-zinc alloy die-casting, comprising a die-casting unit, a movable part movably mounted on the die-casting unit for die-casting products, a fixed part fixedly mounted on the die-casting unit for die-casting products, a forming block fixed on the fixed part for determining the shape of the product, and a heat dissipation channel opened in the fixed part for conveying coolant, wherein the fixed part is provided with a cooling component for cooling the product and a heat exchange component for uniform cooling, wherein the cooling component comprises:

[0007] An electric push rod is fixed on the fixed part and used to drive the cooling assembly to operate, one end of the electric push rod is fixed with an outer fixing plate, the outer fixing plate is fixed with a sliding rod, and one end of the sliding rod is slidably arranged in the fixed part;

[0008] An extension part, fixed on the fixed part and used for switching the cooling mode, one side of the extension part is in sliding contact with one end of the sliding rod, and the other side of the extension part is deformed and in sliding contact with the middle switching plate;

[0009] A water pump is fixed on the die-casting unit and is used to transport coolant. One end of the water pump is connected to a water storage tank, and the other end of the water pump is connected to one end of the heat dissipation channel through a delivery pipe. The other end of the heat dissipation channel is connected to the water storage tank.

[0010] The heat exchange component comprises a mounting plate fixed in the forming block, a driving sleeve is movably mounted on the mounting plate, and blades are fixed on the driving sleeve.

[0011] Preferably, a rotating shaft is passed through the middle toggle plate, a fixed frame is movably mounted on the rotating shaft, one end of the fixed frame is fixed in the fixed part, a connecting plate is fixed on the middle toggle plate, a sliding shaft is slidably passed through the connecting plate, a guide block is slidably passed through the sliding shaft, a spring 1 is fixed to one end of the guide block, a support block is fixed to the other end of the spring 1, the guide block is slidably passed through the support block, a baffle is fixed to one side outer wall of the support block, and one side outer wall of the baffle abuts against the fixed part.

[0012] Preferably, a lower sliding plate is fixed on the side wall of the baffle, a lower piston is fixed at one end of the lower sliding plate, a sealing box is abutted against the outside of the lower piston, one end of the lower sliding plate is slidably inserted into the sealing box, and the top of the sealing box is fixed in the forming block.

[0013] Preferably, an upper piston is slidably installed in the sealing box, an upper sliding plate is fixed on the upper piston, one end of the upper sliding plate is slidably inserted into the sealing box, one end of the upper sliding plate is fixed with a right magnet, a left magnet is magnetically connected to the right magnet, and one end of the left magnet is fixed with an inner fixed plate.

[0014] Preferably, a guide column is slidably inserted into the inner fixed plate, one end of the guide column is fixed in the forming block, a connecting rod is fixed to the inner fixed plate, one end of the connecting rod is fixed to a booster plate, an extrusion plate is abutted against the booster plate, an inclined hole is opened on the booster plate, the inclined hole is semicircular, and the extrusion plate is fixed on the forming block.

[0015] Preferably, the heat exchange assembly also includes a sliding ring slidably installed in the heat dissipation channel, an inclined plate is fixed to the bottom of the sliding ring, a lower disturbance plate is arranged above the sliding ring, a mounting shaft is fixedly installed on the lower disturbance plate, one end of the lower disturbance plate abuts against the upper disturbance plate, a fixed shaft is fixed on the upper disturbance plate, and one end of the mounting shaft and the fixed shaft are hinged in the fixing part through a torsion spring.

[0016] Preferably, a guide groove is provided in the driving sleeve, a protrusion is slidably abutted in the guide groove, a driving shaft is fixed to one end of the protrusion, a spring 2 is fixed to one end of the driving shaft, the other end of the spring 2 is fixed in the driving sleeve, and a driving plate is fixed to the other end of the driving shaft.

[0017] Preferably, a fixing rope is fixed on the fixing part, a collecting plate is fixed to one end of the fixing rope, a movable shaft is fixed in the collecting plate, the movable shaft is hinged in the fixing part through a spiral spring, and the bottom of the fixing part is connected to the water tank through a return pipe.

[0018] The present invention also provides a method for using a precision hot pressing device for aluminum-zinc alloy die casting, comprising the following steps:

[0019] S1, start the die-casting unit to combine the fixed part and the movable part, and press the molten metal into the space between the molding block and the movable part;

[0020] S2, starting the cooling component to cool the molding block after the metal solution is pressed into it;

[0021] S3, balancing the cooling effect of the cooling component through the heat exchange component;

[0022] S4. After the product is finalized, the fixed part and the movable part are separated and the product is removed from the forming block;

[0023] Preferably, the flow range of the water pump in the cooling assembly is within 5m 3 / h-25m 3 / h.

[0024] The present invention provides a precision hot pressing device for aluminum-zinc alloy die casting and a method for using the same. Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The precision hot pressing device for aluminum-zinc alloy die-casting and the method of using the same are provided by arranging a die-casting unit, a movable part, a fixed part, a molding block, a heat dissipation channel, an electric push rod, an outer fixed plate, a sliding rod, an extension part, a middle toggle plate, a fixed frame, a rotating shaft, a connecting plate, a sliding shaft, a guide block, a spring 1, a support block, a baffle, a water storage tank, a water pump, a delivery pipe, and a return pipe 2. The fixed part and the movable part are combined by starting the die-casting unit, and the molding block is inserted into a molding groove provided on the movable part. Then, the aluminum-zinc alloy liquid is pressed into an inner cavity 1 between the molding block and the molding groove. At this time, the water pump included in the cooling component is started to cool the aluminum-zinc alloy liquid in the fixed part and the inner cavity 1 to cool it down and form it. When the inner cavity 2 is filled with coolant or cooling oil, The excess coolant or cooling oil will flow back into the water tank through the return pipe 2 and be recycled again after cooling down. At the same time, when the inner cavity 2 is full, the coolant or cooling oil in the inner cavity 2 can enter the inner cavity 3 opened in the forming block to further cool the aluminum-zinc alloy liquid in the inner cavity 1. After the aluminum-zinc alloy liquid is cooled to the set temperature, the finalized product is taken out and the cooling component is controlled to return to the normal mode. The aluminum-zinc alloy liquid in the inner cavity 1 is cooled in a step-by-step manner to avoid the situation where the cooling speed is too fast, resulting in large thermal stress inside the casting and increasing the risk of cracks. At the same time, the fixed part and the forming block are evenly cooled to avoid the situation where some areas are overcooled while other areas are still hot, causing deformation of the casting or internal stress.

[0026] (2) The precision hot pressing device for aluminum-zinc alloy die-casting and its use method are provided with a sliding ring, an inclined plate, a lower disturbance plate, a mounting shaft, an upper disturbance plate, a fixed shaft, a sealing box, a lower sliding plate, a lower piston, an upper piston, an upper sliding plate, a right magnet, a left magnet, a guide column, an inner fixed plate, a connecting rod, a booster plate, an inclined hole, an inclined plate, a drive plate, a drive shaft, a bump, a second spring, a drive sleeve, a blade, and a mounting plate. The water flow entering the second inner cavity is staged and multi-directional, so that the coolant or cooling oil with a lower temperature that enters the second inner cavity later can quickly and fully contact with the coolant or cooling oil that has been heated up that entered the second inner cavity earlier, so that the temperature of the area in the second inner cavity is kept consistent. ; The coolant or cooling oil in the inner cavity three can be exchanged with the coolant or cooling oil in the inner cavity two. By evenly arranging four sets of heat exchange components on the upper and lower sides of the U-shaped inner cavity two, the heat exchange efficiency between the coolant or cooling oil in the region is improved, thereby reducing the regional temperature difference between the inner cavity two and the inner cavity three; while the coolant or cooling oil is injected into the inner cavity two and the inner cavity three in stages, the heat exchange efficiency between the coolant or cooling oil in each region of the inner cavity two and the inner cavity three can be improved, and the regional temperature difference between the inner cavity two and the inner cavity three can be reduced, thereby avoiding the situation where some areas are overcooled while other areas are still hot, causing deformation of the casting or generating internal stress.

[0027] (3) The precision hot pressing device for aluminum-zinc alloy die-casting and its use method are provided with a collecting plate, a movable shaft, a fixed rope, and a return pipe. When the movable part moves to the side away from the fixed part, the movable part can no longer apply an extrusion force to the collecting plate, so that the collecting plate is flipped out from the fixed part with the movable shaft as the axis under the action of the spiral spring, and the collecting plate is limited by the fixed rope. After the booster plate extends out of the forming block, the coolant or cooling oil sprayed onto the inner and outer walls of the product and dripping can drip into the collecting plate below after the flipping, and flow back to the water storage tank through the return pipe for recycling, thereby avoiding the splashed coolant from contaminating the die-casting unit, maintaining the cleanliness of the die-casting unit, and being able to reuse this part of the coolant or cooling oil, which is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 Another perspective view of the overall structure of the present invention;

[0030] Figure 3 This is a diagram of the collecting plate of the present invention in an open state;

[0031] Figure 4 It is a cross-sectional structural diagram of the fixing part of the present invention;

[0032] Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle;

[0033] Figure 6 It is a schematic diagram of the position of the sliding ring of the present invention;

[0034] Figure 7 It is a combined state diagram of the toggle plate in the present invention;

[0035] Figure 8 It is a disassembled state diagram of the toggle plate in the present invention;

[0036] Fig. 9 is a cross-sectional view of the sealing box of the present invention;

[0037] Fig.10 It is a structural schematic diagram of the fixing plate of the present invention;

[0038] Fig.11 It is a schematic diagram of the decomposed state of the inclined plate of the present invention;

[0039] Fig.12 It is a schematic diagram of the position of the inclined plate of the present invention;

[0040] Fig.13 It is a schematic diagram of the exploded state of the drive shaft of the present invention;

[0041] Fig.14It is a cross-sectional view of the drive sleeve of the present invention.

[0042] In the figure: 1. die casting unit; 101. movable part; 102. fixed part; 103. forming block; 104. heat dissipation channel; 2. electric push rod; 21. outer fixed plate; 22. sliding rod; 23. extension part; 24. middle toggle plate; 25. fixed frame; 251. rotating shaft; 26. connecting plate; 27. sliding shaft; 28. guide block; 29. ​​spring 1; 210. support block; 211. baffle; 3. sliding ring; 31. inclined plate; 32. lower disturbance plate; 33. installation shaft; 34. upper disturbance plate; 35. fixed shaft; 4. sealing box; 41 , lower sliding plate; 42, lower piston; 43, upper piston; 44, upper sliding plate; 45, right magnet; 46, left magnet; 47, guide column; 48, inner fixing plate; 49, connecting rod; 410, booster plate; 411, inclined hole; 412, extrusion plate; 5, collecting plate; 51, movable shaft; 52, fixing rope; 53, return pipe one; 6, water storage tank; 61, water pump; 62, delivery pipe; 63, return pipe two; 7, driving plate; 71, driving shaft; 72, bump; 73, spring two; 74, driving sleeve; 75, blade; 76, mounting plate. DETAILED DESCRIPTION

[0043] 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.

[0044] See also Figures 1 to 14 , the present invention provides the following technical solutions:

[0045] Embodiment 1: A precision hot pressing device for aluminum-zinc alloy die-casting, comprising a die-casting unit 1, a movable part 101 movably mounted on the die-casting unit 1 for die-casting products, a fixed part 102 fixedly mounted on the die-casting unit 1 for die-casting products, a forming block 103 fixed on the fixed part 102 for determining the product shape, and a heat dissipation channel 104 provided in the fixed part 102 for conveying coolant, wherein a cooling component for cooling the product is provided on the fixed part 102, and the cooling component comprises:

[0046] One end of the electric push rod 2 is fixedly mounted on the support frame of the fixed part 102 to drive the cooling assembly to operate, and the other end of the electric push rod 2 is fixedly mounted with an outer fixing plate 21, and two sliding rods 22 are fixedly mounted on the outer wall of one side of the outer fixing plate 21, and one end of the two sliding rods 22 are slidably arranged in the fixed part 102;

[0047] The outer walls of the two extension parts 23 are symmetrically fixedly installed on the fixed part 102 for switching the cooling mode. One side of the two extension parts 23 is respectively corresponding to one end of the two sliding rods 22 for sliding contact. The other sides of the two extension parts 23 are respectively corresponding to a middle toggle plate 24 after deformation. A rotating shaft 251 is fixedly penetrated in each of the two middle toggle plates 24. A fixed frame 25 is hingedly installed on each of the two rotating shafts 251 through a torsion spring. One end of the fixed frame 25 is fixedly installed in the fixed part 102. The middle toggle plate 24 is fixed A connecting plate 26 is installed, a sliding shaft 27 is slidably inserted in each of the two connecting plates 26, a guide block 28 is slidably inserted on each of the two sliding shafts 27, a spring 29 is fixedly installed on one end of the two guide blocks 28, a support block 210 is fixedly installed on the other end of the two springs 29, one end of the two guide blocks 28 is slidably inserted in the two support blocks 210 respectively, one side outer wall of the two support blocks 210 is fixed on the same baffle 211, and one side outer wall of the baffle 211 abuts against the inside of the fixing portion 102;

[0048] The outer wall of the water pump 61 is fixedly installed on the top of the die-casting unit 1 through the outer shell for conveying coolant. One end of the water pump 61 is connected to the water tank 6 through the delivery pipe 62, and the other end of the water pump 61 is connected to one end of the heat dissipation channel 104 through the delivery pipe 62. The other end of the heat dissipation channel 104 is connected to the water tank 6 through the return pipe 2 63.

[0049] When in use, the fixed part 102 and the movable part 101 are combined together by starting the die-casting unit 1, so that the molding block 103 is inserted into the molding groove provided on the movable part 101, and then the aluminum-zinc alloy liquid is pressed into the inner cavity 1 between the molding block 103 and the molding groove. At this time, the water pump 61 included in the cooling assembly is started, and the water pump 61 conveys the coolant or cooling oil in the water storage tank 6 to the inner cavity 2 of the fixed part 102 through the conveying pipe 62, so as to cool the fixed part 102 and the aluminum-zinc alloy liquid in the inner cavity 1 to cool and form. When the inner cavity 2 is filled with coolant or cooling oil, the excess coolant or cooling oil will flow back to the water storage tank 6 through the return pipe 2, and will be recycled again after cooling. At the same time, when the inner cavity 2 is filled, the electric push rod 2 is started to move to position A and maintain it;

[0050] During the process, the electric push rod 2 drives the outer fixing plate 21 to move toward the side where the fixing part 102 is located, and the outer fixing plate 21 drives the sliding rod 22 to move, so that the sliding rod 22 squeezes the extension part 23 to make the extension part 23 deform toward the side where the movable part 101 is located, and the extension part 23 squeezes the middle toggle plate 24 away from the end of the connecting plate 26, so that the middle toggle plate 24 turns over with the rotating shaft 251 as the axis. When turning over, the middle toggle plate 24 drives the connecting plate 26 to turn over synchronously, and the connecting plate 26 drives the sliding shaft 27 to turn over and move synchronously, and the guide block 28 and the sliding shaft 27 are slidably matched and guide and limit the sliding shaft 27, and the sliding The movable shaft 27 drives the guide block 28 to move, and the guide block 28 and the support block 210 are slidably matched, so that the guide block 28 can move linearly along the support block 210 while driving the support block 210 to move toward the side where the electric push rod 2 is located, so that the support block 210 drives the baffle 211 to move toward the side where the electric push rod 2 is located, so that the coolant or cooling oil in the inner cavity 2 can enter the inner cavity 3 opened in the forming block 103, and further cool the aluminum-zinc alloy liquid in the inner cavity 1. After the aluminum-zinc alloy liquid is cooled to the set temperature, the finalized product is taken out and the cooling component is controlled to return to the normal mode.

[0051] Embodiment 2: The technical solution of this embodiment, which is different from that of Embodiment 1, includes:

[0052] A lower sliding plate 41 is fixedly mounted on the side wall of the baffle 211, a lower piston 42 is fixedly mounted on one end of the lower sliding plate 41, the outer side of the lower piston 42 abuts against a sealing box 4, one end of the lower sliding plate 41 is slidably penetrated in the sealing box 4, the top of the sealing box 4 is fixedly mounted in the forming block 103, an upper piston 43 is slidably mounted in the sealing box 4, an upper sliding plate 44 is fixedly mounted on the upper piston 43, one end of the upper sliding plate 44 is slidably penetrated in the sealing box 4, a right magnet 45 is fixedly mounted on one end of the upper sliding plate 44, the upper piston 43 and the lower piston 42 are both sealed and connected to the sealing box 4, and the right magnet 45 is magnetically attracted A left magnet 46 is connected, one end of the left magnet 46 is fixedly installed with an inner fixing plate 48, a guide column 47 is slidably inserted in the inner fixing plate 48, one end of the guide column 47 is fixedly installed in the forming block 103, four connecting rods 49 are fixedly installed on the inner fixing plate 48, one end of the four connecting rods 49 is fixedly installed on the same boosting plate 410, the boosting plate 410 is abutted against an extrusion plate 412, a group of inclined holes 411 are provided on the boosting plate 410, the inclined holes 411 are semicircular, and the end of the inclined hole 411 away from the baffle 211 is inclined toward the center, and the extrusion plate 412 is fixedly installed on the forming block 103;

[0053] The fixed part 102 is also provided with a heat exchange component for uniform cooling, and the heat exchange component includes a sliding ring 3 slidably installed in the heat dissipation channel 104, three inclined plates 31 are fixedly installed at the bottom of the sliding ring 3, two lower disturbance plates 32 are arranged above the sliding ring 3, and the two lower disturbance plates 32 are symmetrically distributed on both sides of the sliding ring 3, and a mounting shaft 33 is fixedly installed on each of the two lower disturbance plates 32, one end of each of the two lower disturbance plates 32 abuts against an upper disturbance plate 34, and a fixed shaft 35 is fixedly installed on each of the two upper disturbance plates 34, and one end of each of the two mounting shafts 33 and the two fixed shafts 35 is hinged in the fixed part 102 through a torsion spring;

[0054] The heat exchange component also includes four mounting plates 76 fixedly installed in the forming block 103, and the four mounting plates 76 are evenly distributed in the forming block 103. A driving sleeve 74 is movably installed on the four mounting plates 76 through shaft teeth, and a group of blades 75 are fixedly installed on the four driving sleeves 74. A guide groove is provided in the four driving sleeves 74, and a group of protrusions 72 are slidably abutted in the four guide grooves. A driving shaft 71 is fixedly installed at one end of the four protrusions 72, and a spring 2 73 is fixedly installed at one end of the four driving shafts 71. The other ends of the four springs 2 73 are fixed in the corresponding driving sleeves 74, and a group of driving plates 7 are fixedly installed on the other ends of the four driving shafts 71.

[0055] When in use, a sliding ring 3 is slidably installed at the contact point between the heat dissipation channel 104 and the inner cavity 2, so that when the coolant or cooling oil enters the inner cavity 2 through the heat dissipation channel 104, it will impact on the inclined plate 31, so that the inclined plate 31 drives the sliding ring 3 to rotate, so that the water flow entering the inner cavity 2 is staged and multi-directional, so that the water flow can intermittently impact the lower disturbance plate 32, so that the lower disturbance plate 32 is intermittently turned around the installation axis 33 as the axis, and the lower disturbance plate 32 intermittently squeezes the upper disturbance plate 34, so that the upper disturbance plate 34 is intermittently turned around the fixed axis 35 as the axis, and resets to the initial position under the action of the torsion spring when the water flow impact is reduced, and the cooling oil or coolant in the U-shaped inner cavity 2 is disturbed back and forth by the lower disturbance plate 32 and the upper disturbance plate 34, so that the coolant or cooling oil with a lower temperature that enters the inner cavity 2 later can quickly and fully contact with the coolant or cooling oil that has been heated up that entered the inner cavity 2 earlier, so that the temperature of each area in the inner cavity 2 is kept consistent;

[0056] When the cooling oil or coolant begins to flow from the inner cavity two into the inner cavity three, the baffle 211 no longer applies an extrusion force to the drive shaft 71, so that the drive shaft 71 moves along the drive sleeve 74 to the side where the baffle 211 is located under the action of the spring two 73, so that the drive shaft 71 drives the drive plate 7 to extend from the inner cavity three into the inner cavity two. When the inner cavity two and the inner cavity three are completely filled with coolant or cooling oil, the water flow entering the inner cavity two through the heat dissipation channel 104 and the water flow entering the top heat dissipation channel 104 from the inner cavity two can impact the drive plate 7 to drive the drive shaft 71 to rotate, and the drive shaft 71 drives the bump 7 2 moves, the protrusion 72 and the driving sleeve 74 slide together, so that the protrusion 72 can limit and guide the driving shaft 71 while driving the driving sleeve 74 to rotate synchronously, the mounting plate 76 provides support force for the driving sleeve 74, and the driving sleeve 74 drives the blade 75 to rotate, so that the blade 75 generates thrust, so that the coolant or cooling oil in the inner cavity three can be exchanged with the coolant or cooling oil in the inner cavity two, and four groups of heat exchange components are evenly arranged on the upper and lower sides of the square-shaped inner cavity two, so as to improve the heat exchange efficiency between the coolant or cooling oil in the region, thereby reducing the regional temperature difference between the inner cavity two and the inner cavity three;

[0057] When the aluminum-zinc alloy liquid is cooled and formed and the product attached to the forming block 103 needs to be taken out, the electric push rod 2 is controlled to continue to move from position A to the side where the movable part 101 is located to position B and remain there until the product is taken off from the forming block 103, and then the electric push rod 2 is reset to the initial position;

[0058] In the process of moving to position B, the baffle 211 will move toward the side where the electric push rod 2 is located, so that the gap between the inner chamber 2 and the inner chamber 3 becomes larger, and at the same time, the baffle 211 will drive the lower sliding plate 41 to move synchronously, and the lower sliding plate 41 drives the lower piston 42 to move, and the lower piston 42 moves in the sealing box 4, so that the gas in the sealing box 4 flows from the lower piston 42 to the upper piston 43, so that the upper piston 43 drives the upper sliding plate 44 to move toward the side where the forming block 103 is located, and the upper sliding plate 44 drives the right magnet 45 to move, so that the right magnet 45 is close to the left magnet 4 6 and finally magnetically attracted together, so that the left magnet 46 can synchronously drive the inner fixing plate 48 to move, and the inner fixing plate 48 drives the boosting plate 410 to move through the connecting rod 49, so that the boosting plate 410 extends a short distance from the forming block 103, pushing the product away from the forming block 103, and at the same time, an inclined hole 411 is opened on the inclined surface where the boosting plate 410 contacts the extrusion plate 412, so that after the boosting plate 410 extends from the forming block 103, the coolant in the inner cavity three can be sprayed out from the inclined hole 411, and the product after the auxiliary molding is smoothly demoulded from the forming block 103;

[0059] During the process of the electric push rod 2 returning to the initial position, the baffle 211 gradually fits with the inner wall of the fixing part 102, thereby separating the inner cavity two from the inner cavity three, and the left magnet 46 is separated from the right magnet 45. The magnetic attraction of the right magnet 45 to the left magnet 46 makes the booster plate 410 fit with the extrusion plate 412 again, so that the coolant in the inner cavity three cannot be sprayed out from the inclined hole 411, and the middle push plate 24 that loses the extrusion force of the extension part 23 is also reset to the initial state under the action of the spring 1 29 and the torsion spring.

[0060] Embodiment 3, this embodiment is different from embodiment 2 in that the technical solution includes: two fixed ropes 52 are fixedly installed on the fixed part 102, one end of the two fixed ropes 52 is fixedly installed on the same collecting plate 5, a movable shaft 51 is fixedly installed in the collecting plate 5, both ends of the movable shaft 51 are hingedly installed in the fixed part 102 through a spiral spring, and the bottom of the fixed part 102 is connected to the water tank 6 through a return pipe 53.

[0061] During use, when the movable part 101 moves to the side away from the fixed part 102, the movable part 101 can no longer apply an extrusion force to the collecting plate 5, so that the collecting plate 5 is flipped out of the fixed part 102 with the movable shaft 51 as the axis under the action of the spiral spring, and the collecting plate 5 is limited by the fixed rope 52, so that after the booster plate 410 extends out of the forming block 103, the coolant or cooling oil sprayed onto the inner and outer walls of the product and dripping can drip into the flipped collecting plate 5 below, and flow back to the water storage tank 6 through the return pipe 53 for recycling. When the fixed part 102 and the movable part 101 are molded together for the next time, the collecting plate 5 will be flipped back into the fixed part 102 with the movable shaft 51 as the axis under the extrusion of the movable part 101, waiting for the next use.

[0062] The embodiment of the present invention also provides a method for using a precision hot pressing device for aluminum-zinc alloy die casting, comprising the following steps:

[0063] S1, start the die-casting unit 1 to combine the fixed part 102 and the movable part 101, and press the molten metal into the space between the forming block 103 and the movable part 101;

[0064] S2, start the cooling assembly to cool the forming block 103 after the metal solution is pressed in, and the flow range of the water pump 61 in the cooling assembly is within 5m 3 / h-25m 3 / h, the moving speed of the electric push rod 2 in the cooling assembly is between 0.05m / s-0.1m / s;

[0065] S3, balancing the cooling effect of the cooling component through the heat exchange component;

[0066] S4. After the product is formed, the fixed part 102 is controlled to separate from the movable part 101, and the product is removed from the forming block 103.

[0067] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision hot pressing device for aluminum-zinc alloy die casting, comprising a die casting unit (1), a movable part (101) movably mounted on the die casting unit (1) for die casting products, a fixed part (102) fixedly mounted on the die casting unit (1) for die casting products, a forming block (103) fixed on the fixed part (102) for determining the shape of the product, and a heat dissipation channel (104) provided in the fixed part (102) for conveying a cooling liquid, characterized in that: The fixing portion (102) is provided with a cooling component for cooling the product and a heat exchange component for uniform cooling, wherein the cooling component comprises: An electric push rod (2) is fixed on the fixing part (102) and is used to drive the cooling component to operate. An outer fixing plate (21) is fixed to one end of the electric push rod (2), a sliding rod (22) is fixed to the outer fixing plate (21), and one end of the sliding rod (22) is slidably inserted into the fixing part (102); The extension part (23) is fixed on the fixed part (102) and is used to switch the cooling mode. One side of the extension part (23) is in sliding contact with one end of the sliding rod (22). The other side of the extension part (23) is deformed and then slidably contacts with the middle switching plate (24). The heat exchange component includes a mounting plate (76) fixed in the forming block (103). A driving sleeve (74) is movably mounted on the mounting plate (76), and a blade (75) is fixed on the driving sleeve (74).

2. A precision hot pressing device for aluminum-zinc alloy die casting according to claim 1, characterized in that: The cooling assembly also includes a water pump (61) fixed on the die-casting unit (1) for conveying coolant, one end of the water pump (61) is connected to a water storage tank (6), the other end of the water pump (61) is connected to one end of a heat dissipation channel (104) through a conveying pipe (62), and the other end of the heat dissipation channel (104) is connected to the water storage tank (6).

3. The precision hot pressing device for aluminum-zinc alloy die casting according to claim 1, characterized in that: A rotating shaft (251) is inserted into the middle toggle plate (24), a fixed frame (25) is movably mounted on the rotating shaft (251), one end of the fixed frame (25) is fixed in the fixed portion (102), a connecting plate (26) is fixed on the middle toggle plate (24), a sliding shaft (27) is slidably inserted into the connecting plate (26), a guide block (28) is slidably inserted into the sliding shaft (27), a spring (29) is fixed at one end of the guide block (28), a support block (210) is fixed at the other end of the spring (29), and the guide block (28) is fixed to the guide block (28). The block (28) is slidably inserted into the support block (210); a baffle (211) is fixed to one side outer wall of the support block (210); one side outer wall of the baffle (211) abuts against the fixed portion (102); a lower sliding plate (41) is fixed to the side wall of the baffle (211); a lower piston (42) is fixed to one end of the lower sliding plate (41); the outer side of the lower piston (42) abuts against a sealing box (4); one end of the lower sliding plate (41) is slidably inserted into the sealing box (4); and the top of the sealing box (4) is fixed to the forming block (103).

4. The precision hot pressing device for aluminum-zinc alloy die casting according to claim 3 is characterized in that: An upper piston (43) is slidably mounted in the sealing box (4), an upper sliding plate (44) is fixed on the upper piston (43), one end of the upper sliding plate (44) is slidably inserted into the sealing box (4), a right magnet (45) is fixed on one end of the upper sliding plate (44), a left magnet (46) is magnetically connected to the right magnet (45), and an inner fixed plate (48) is fixed on one end of the left magnet (46).

5. The precision hot pressing device for aluminum-zinc alloy die casting according to claim 4, characterized in that: A guide column (47) is slidably inserted into the inner fixing plate (48), one end of the guide column (47) is fixed in the forming block (103), a connecting rod (49) is fixed on the inner fixing plate (48), one end of the connecting rod (49) is fixed with a boosting plate (410), the boosting plate (410) is abutted against an extrusion plate (412), an inclined hole (411) is provided on the boosting plate (410), the inclined hole (411) is semicircular, and the extrusion plate (412) is fixed on the forming block (103).

6. The precision hot pressing device for aluminum-zinc alloy die casting according to claim 1, characterized in that: The heat exchange assembly also includes a sliding ring (3) slidably mounted in the heat dissipation channel (104); an inclined plate (31) is fixed at the bottom of the sliding ring (3); a lower disturbance plate (32) is arranged above the sliding ring (3); a mounting shaft (33) is fixedly mounted on the lower disturbance plate (32); one end of the lower disturbance plate (32) abuts against an upper disturbance plate (34); a fixed shaft (35) is fixed on the upper disturbance plate (34); one end of the mounting shaft (33) and the fixed shaft (35) are both hinged in the fixed portion (102) via a torsion spring.

7. The precision hot pressing device for aluminum-zinc alloy die casting according to claim 1, characterized in that: A guide groove is provided in the driving sleeve (74), a convex block (72) is slidably abutted in the guiding groove, a driving shaft (71) is fixed to one end of the convex block (72), a spring 2 (73) is fixed to one end of the driving shaft (71), the other end of the spring 2 (73) is fixed in the driving sleeve (74), and a driving plate (7) is fixed to the other end of the driving shaft (71).

8. The precision hot pressing device for aluminum-zinc alloy die casting according to claim 1, characterized in that: A fixing rope (52) is fixed on the fixing part (102), a collecting plate (5) is fixed to one end of the fixing rope (52), a movable shaft (51) is fixed inside the collecting plate (5), the movable shaft (51) is hinged inside the fixing part (102) via a spiral spring, and the bottom of the fixing part (102) is connected to a water storage tank (6) via a return pipe (53).

9. A method for using a precision hot pressing device for aluminum-zinc alloy die casting according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, starting the die-casting machine unit (1) to combine the fixed part (102) and the movable part (101), and pressing the molten metal into between the molding block (103) and the movable part (101); S2, starting the cooling component to cool the forming block (103) after the metal solution is pressed into it; S3, balancing the cooling effect of the cooling component through the heat exchange component; S4. After the product is formed, the fixed part (102) and the movable part (101) are controlled to separate, and the product can be removed from the forming block (103).

10. The method for using the precision hot pressing device for aluminum-zinc alloy die casting according to claim 9, characterized in that: The flow range of the water pump (61) in the cooling assembly is 5m 3 / h-25m 3 / h.

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