Aluminum workpiece casting equipment and casting process of high-hardness aluminum workpiece

Abstract

The invention discloses aluminum workpiece casting equipment and a casting process of a high-hardness aluminum workpiece, and relates to the field of casting equipment. After casting is completed, the two sets of translation lifting assemblies are driven by the driving assembly to synchronously work, so that the two sets of translation lifting assemblies drive the two plungers to rotate and translate to the positions over a pouring gate and a dead head correspondingly, and then the two sets of translation lifting assemblies continue to drive the two plungers to synchronously move downwards; the two plungers are respectively clamped in the pouring gate and the riser in a sealing and sliding manner and move downwards along the pouring gate and the riser, so that molten aluminum in the pouring gate and the riser is extruded and conveyed into the cavity, the molten aluminum in the pouring gate, the riser and the cavity is continuously pressurized, and the molten aluminum in the cavity can be fed through the molten aluminum in the pouring gate and the riser through pressurization; the problems of incomplete casting, air holes, shrinkage cavities, shrinkage porosity and the like of the cast aluminum workpiece are prevented, meanwhile, the density of molten aluminum in the cavity can be improved, and then the density and hardness of the cast aluminum workpiece are improved.

Description

Technical Field

[0001] The present invention belongs to the field of casting equipment. Specifically, it particularly relates to a casting equipment for aluminum workpieces and a casting process for high-hardness aluminum workpieces. Background Art

[0002] Gravity casting is the most commonly used casting method in the casting field. Currently, the shrinkage compensation of products is carried out by the static pressure of the molten metal in the gating system and risers. The effect of shrinkage compensation depends on the gravity (static pressure) generated by the height of the molten metal poured in the gating system and risers. However, when casting metal workpieces with relatively low density such as aluminum workpieces, due to the relatively low density and weight of the molten metal, the shrinkage compensation pressure in the gating system and risers is relatively small, thus reducing the quality of the cast metal workpieces. Summary of the Invention

[0003] Aiming at the problems in the related art, the present invention provides a casting equipment for aluminum workpieces and a casting process for high-hardness aluminum workpieces to overcome the above-mentioned technical problems existing in the prior related art.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention provides a casting equipment for aluminum workpieces, including a casting mechanism. The casting mechanism includes a lower mold, an upper mold, and an opening and closing control component for driving the opening and closing of the lower mold and the upper mold. A cavity is arranged between the lower mold and the upper mold. The top surface of the upper mold is provided with a gating system and a riser that communicate with the cavity; A pressurizing mechanism capable of simultaneously sealing and pressurizing the gating system and the riser is installed on the top surface of the upper mold. The pressurizing mechanism includes a driving component, two sets of translation and lifting components, and two plungers. The two plungers are respectively installed on one side above the gating system and the riser through the two sets of translation and lifting components. The driving component can drive the two sets of translation and lifting components to work synchronously, so that the two sets of translation and lifting components drive the two plungers to respectively rotate and translate to directly above the gating system and the riser, and then drive the two plungers to move downward synchronously; Two sets of anti-adhesion mechanisms corresponding to the two plungers are further installed on the top surface of the upper mold. The anti-adhesion mechanism includes an anti-adhesive storage tank, a spray head, and a spraying component. The spray head is installed and connected to one side of the top of the anti-adhesive storage tank through the spraying component, and the spray head is located below the translation trajectory of the plunger. The spraying component can suck the anti-adhesive in the anti-adhesive storage tank and spray it onto the bottom surface of the plunger when the plunger translates past above the spray head.

[0005] Furthermore, the opening and closing control component includes a base. The lower mold is fixedly installed on the top surface of the base. An outer ring of the top surface of the base is fixedly installed with columns. The top ends of the columns are fixedly installed with a top seat. The middle of the top seat is fixedly installed with a hydraulic telescopic shaft. The upper mold is fixedly installed on the telescopic end at the bottom of the hydraulic telescopic shaft.

[0006] Furthermore, the translation and lifting assembly includes a support plate fixedly installed on the top surface of the upper die. On one side of the support plate, a mounting seat is fixedly installed, and a positioning sleeve is fixedly installed on the mounting seat. A lead screw is rotatably installed inside the positioning sleeve, and a threaded sleeve is installed on the lead screw in a threaded transmission manner; An outer ring of the positioning sleeve is movably sleeved with a rotating sleeve. A connecting frame is fixedly installed on an outer wall of the rotating sleeve. One end of the connecting frame is fixedly installed with a connecting rod, and the plunger is fixedly installed at a bottom end of the connecting rod.

[0007] Furthermore, a transverse guide groove and a vertical guide groove are formed in an outer wall of the positioning sleeve. One end of the transverse guide groove communicates with a top end of the vertical guide groove. A guiding connection block capable of sliding along the transverse guide groove and the vertical guide groove is fixedly installed between the rotating sleeve and the threaded sleeve.

[0008] Furthermore, the driving assembly includes a motor, a transmission shaft, and a driven bevel gear. The motor is fixedly installed on one side of the support plate. An output end of the motor is installed with a driving bevel gear in a transmission manner. The transmission shaft is rotatably installed on the top surface of the upper die. A first transmission bevel gear meshing and drivingly connected with the driving bevel gear is fixedly installed in a middle of the transmission shaft. Second transmission bevel gears are fixedly installed at both ends of the transmission shaft. The driven bevel gear is fixedly installed at a bottom end of the lead screw and is meshingly drivingly connected with the second transmission bevel gear.

[0009] Furthermore, the spraying assembly includes a pressure chamber arranged at a top of the anti-sticking agent storage tank. A liquid inlet hole communicating with an inside of the anti-sticking agent storage tank is arranged at a bottom end of the pressure chamber, and a suction pipe extending to a bottom end inside the anti-sticking agent storage tank is connected and installed at a bottom end of the liquid inlet hole. A liquid discharge hole is arranged on one side of the pressure chamber, and the liquid discharge hole and a spray head are communicated through a liquid guide pipe; A one-way liquid inlet valve group is installed above the liquid inlet hole, a one-way liquid discharge valve group is installed on one side of the liquid discharge hole. A limiting frame located above the liquid discharge hole is fixedly installed inside the pressure chamber. A piston is slidably installed at an upper end inside the pressure chamber. A return spring is abutted and installed between the piston and the limiting frame.

[0010] Furthermore, a lifting rod is fixedly installed at a top end of the piston. The lifting rod extends above the pressure chamber at a top end and is fixedly installed with a lifting wedge block; A connecting plate is installed at a bottom end of the connecting frame. A support rod is installed on the connecting plate. A translation wedge block capable of slidingly abutting against the lifting wedge block is fixedly installed at a bottom end of the support rod.

[0011] Furthermore, the one-way liquid inlet valve group includes a liquid inlet sealing valve core and a liquid inlet sealing spring. The liquid inlet sealing valve core abuts against a top end of the liquid inlet hole, and the liquid inlet sealing spring abuts between the liquid inlet sealing valve core and the limiting frame; The one-way liquid discharge valve group includes a liquid discharge sealing valve core and a liquid discharge sealing spring. The liquid discharge sealing valve core abuts against one side of the liquid discharge hole, and the liquid discharge sealing spring abuts between the liquid discharge sealing valve core and the liquid guide pipe.

[0012] Further, a rotating shaft is rotatably installed on the connecting plate. The top end of the support rod is fixedly connected to the rotating shaft. A torsion spring is sleeved at the end of the rotating shaft. One end of the torsion spring is fixedly connected to the support rod, and the other end of the torsion spring is fixedly connected to the inner wall of the connecting plate. A limiting abutting block abutting against the support rod is fixedly installed at the lower end of the connecting plate.

[0013] The present invention also discloses a casting process for high-hardness aluminum workpieces, and the specific steps are as follows: First, the lower mold and the upper mold are driven to close by the opening and closing control component so that the cavity is closed. Then, molten aluminum is conveyed into the cavity through the gate. At the same time, the air in the cavity is discharged from the riser until the cavity is filled with molten aluminum and the molten aluminum rises and spreads into the gate and the riser. Then, the driving component drives the two translation and lifting components to work synchronously so that the two translation and lifting components drive the two plungers to rotate and translate to the positions directly above the gate and the riser respectively. When the plunger translates past the nozzle, the spraying component sucks the anti-sticking agent in the anti-sticking agent storage tank and sprays the anti-sticking agent onto the bottom surface of the plunger through the nozzle. After that, the two translation and lifting components continue to drive the two plungers to move downward synchronously, so that the two plungers are hermetically and slidably clamped into the gate and the riser respectively and move downward along the gate and the riser, thereby squeezing and conveying the molten aluminum in the gate and the riser into the cavity and continuously pressurizing the molten aluminum in the gate, the riser and the cavity. When the molten aluminum in the cavity cools and solidifies to form an aluminum workpiece, the lower mold and the upper mold are driven to open by the opening and closing control component. At the same time, the driving component and the two translation and lifting components continue to drive the two plungers to move downward synchronously so that the plungers push and demold the aluminum workpiece. Finally, the cast aluminum workpiece is subjected to anodic oxidation coating to electroplate an oxide film on the surface of the aluminum workpiece.

[0014] The present invention has the following beneficial effects: 1. In the present invention, a plunger corresponding to the gate and the riser is installed on the top surface of the upper mold, and the plunger is initially staggered with the gate and the riser, so as not to affect the casting of aluminum liquid from the gate into the cavity and the exhaust of the cavity through the riser. When the casting is completed, the driving assembly drives the two sets of translation lifting assemblies to work synchronously, so that the two sets of translation lifting assemblies drive the two plungers to rotate and translate respectively to the top of the gate and the riser, and then the two sets of translation lifting assemblies continue to drive the two plungers to move downward synchronously, so that the two plungers are respectively sealed and slidably clamped into the gate and the riser, and move downward along the gate and the riser. Thereby, the aluminum liquid in the gate and riser is squeezed and transported into the cavity, and the aluminum liquid in the gate, riser and cavity is continuously pressurized. The pressurization can not only compensate the shrinkage of the aluminum liquid in the cavity through the aluminum liquid in the gate and riser, and prevent the cast aluminum workpiece from having problems such as incomplete casting, air holes, shrinkage holes, shrinkage, etc., but also increase the density of the aluminum liquid in the cavity, thereby increasing the density and hardness of the cast aluminum workpiece, thereby improving the quality of the aluminum workpiece; and after the aluminum workpiece is cooled and formed, the aluminum workpiece can be pushed downward to be demolded by the descending plunger, making the demolding process more convenient.

[0015] 2. In the present invention, an anti-sticking mechanism including an anti-sticking agent storage tank, a nozzle and a spray assembly is arranged at the top of the upper mold. When the plunger moves horizontally over the nozzle, the spray assembly draws the anti-sticking agent in the anti-sticking agent storage tank and sprays the anti-sticking agent onto the bottom surface of the plunger through the nozzle. By spraying the anti-sticking agent on the bottom of the plunger before each pressurization, the smoothness of the bottom surface of the plunger can be improved, preventing the plunger from sticking to the aluminum liquid in the gate or riser during the pressurization process, thereby ensuring that the pressurization and subsequent demoulding processes proceed normally.

[0016] 3. In the present invention, by anodizing the formed aluminum workpiece, a hard oxide film can be electroplated on the surface of the aluminum workpiece, thereby further improving the hardness of the aluminum workpiece, thereby improving the wear resistance and corrosion resistance of the aluminum workpiece, and extending the service life of the aluminum workpiece.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the casting equipment of the present invention; Figure 2 For the present invention Figure 1 A local enlarged structural schematic diagram; Figure 3 One of the three-dimensional structure diagrams of the mold of the present invention; Figure 4 For the present invention Figure 3 The partial enlarged structure diagram at position B; Figure 5 Another three-dimensional structure diagram of the mold of the present invention; Figure 6 For the present invention Figure 5 The partial enlarged structure diagram at position C; Figure 7 The third three-dimensional structure diagram of the mold of the present invention; Figure 8 For the present invention Figure 7 The partial enlarged structure diagram at position D; Figure 9 For the present invention Figure 7 The partial enlarged structure diagram at position E.

[0020] In the figure: 1. Casting mechanism; 11. Lower mold; 12. Upper mold; 13. Base; 14. Column; 15. Top seat; 16. Hydraulic telescopic shaft; 17. Gate; 18. Riser; 2. Pressing mechanism; 21. Support plate; 22. Mounting seat; 23. Positioning sleeve; 24. Lead screw; 25. Rotating sleeve; 26. Connecting frame; 27. Connecting rod; 28. Plunger; 29. Motor; 210. Driving bevel gear; 211. Transmission bevel gear 1; 212. Transmission shaft; 213. Transmission bevel gear 2; 214. Driven bevel gear; 215. Threaded sleeve; 216. Transverse guide groove; 217. Vertical guide groove; 218. Guide connection block; 3. Anti-adhesion mechanism; 31. Anti-adhesive agent storage tank; 32. Sprayer; 33. Lifting wedge block; 34. Lifting rod; 35. Support rod; 36. Connecting plate; 37. Translating wedge block; 38. Pressure chamber; 39. Liquid guide pipe; 310. Rotating shaft; 311. Torsion spring; 312. Limit abutting block; 313. Piston; 314. Return spring; 315. Limit frame; 316. Liquid inlet hole; 317. Liquid inlet sealing valve core; 318. Liquid inlet sealing spring; 319. Liquid discharge hole; 320. Liquid discharge sealing valve core; 321. Liquid discharge sealing spring. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the invention.

[0022] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention. Embodiment 1

[0023] Please refer to Figures 1-4 As shown, the present invention is an aluminum workpiece casting device, including a casting mechanism 1. The casting mechanism 1 includes a lower mold 11, an upper mold 12, and an opening and closing control component for driving the opening and closing of the lower mold 11 and the upper mold 12. A cavity is provided between the lower mold 11 and the upper mold 12. The top surface of the upper mold 12 is provided with a pouring gate 17 and a riser 18 communicating with the cavity; A pressurizing mechanism 2 capable of simultaneously sealing and pressurizing the pouring gate 17 and the riser 18 is installed on the top surface of the upper mold 12. The pressurizing mechanism 2 includes a driving component, two sets of translation and lifting components, and two plungers 28. The two plungers 28 are respectively installed on one side above the pouring gate 17 and the riser 18 through the two sets of translation and lifting components. The driving component can drive the two sets of translation and lifting components to work synchronously, so that the two sets of translation and lifting components drive the two plungers 28 to respectively rotate and translate to directly above the pouring gate 17 and the riser 18, and then drive the two plungers 28 to move downward synchronously; Two sets of anti-adhesion mechanisms 3 corresponding to the two plungers 28 one by one are also installed on the top surface of the upper mold 12. The anti-adhesion mechanism 3 includes an anti-adhesive agent storage tank 31, a spray head 32, and a spraying component. The spray head 32 is installed and connected to one side of the top of the anti-adhesive agent storage tank 31 through the spraying component, and the spray head 32 is located below the translation trajectory of the plunger 28. The spraying component can suck the anti-adhesive agent in the anti-adhesive agent storage tank 31 and spray it onto the bottom surface of the plunger 28 through the spray head 32 when the plunger 28 translates past above the spray head 32; Specifically, when casting an aluminum workpiece with this aluminum workpiece casting equipment, first, the lower mold 11 and the upper mold 12 are driven by the opening and closing control component to close the mold, so that the cavity is closed. Then, the molten aluminum is transported into the cavity through the gate 17. At the same time, the air in the cavity is discharged from the riser 18 until the cavity is filled with molten aluminum and the molten aluminum rises and spreads into the gate 17 and the riser 18. Then, the driving component drives the two translation and lifting components to work synchronously, so that the two translation and lifting components drive the two plungers 28 to rotate and translate respectively to the positions directly above the gate 17 and the riser 18. When the plunger 28 translates past the upper part of the nozzle 32, the spraying component sucks the anti-sticking agent in the anti-sticking agent storage tank 31 and sprays the anti-sticking agent onto the bottom surface of the plunger 28 through the nozzle 32. Then, the two translation and lifting components continue to drive the two plungers 28 to move downward synchronously, so that the two plungers 28 are respectively hermetically and slidably clamped into the gate 17 and the riser 18 and move downward along the gate 17 and the riser 18, thereby squeezing and transporting the molten aluminum in the gate 17 and the riser 18 into the cavity and continuously pressurizing the molten aluminum in the gate 17, the riser 18 and the cavity. When the molten aluminum in the cavity cools and solidifies to form an aluminum workpiece, the lower mold 11 and the upper mold 12 are driven by the opening and closing control component to open the mold. At the same time, the driving component and the two translation and lifting components continue to drive the two plungers 28 to move downward synchronously, so that the plungers 28 push the aluminum workpiece upward for demolding; The pressurization by the plunger 28 can not only compensate for the shrinkage of the molten aluminum in the cavity through the molten aluminum in the gate 17 and the riser 18, prevent problems such as incomplete casting, air holes, shrinkage cavities, and shrinkage porosity in the cast aluminum workpiece, but also improve the density of the molten aluminum in the cavity, and then improve the density and hardness of the cast aluminum workpiece, thereby improving the quality of the aluminum workpiece. And after the aluminum workpiece cools and solidifies, the downward moving plunger 28 can also push the aluminum workpiece downward for demolding, making the demolding process more convenient. And by spraying the anti-sticking agent on the bottom of the plunger 28 before each pressurization, the smoothness of the bottom surface of the plunger 28 can be improved, preventing the plunger 28 from sticking to the molten aluminum in the gate 17 or the riser 18 during the pressurization process and ensuring the normal progress of the pressurization and subsequent demolding processes. Embodiment 2

[0024] Please refer to Figure 1 、 Figure 2 As shown, the difference between this embodiment and the above embodiment is that the opening and closing control component includes a base 13. The lower mold 11 is fixedly installed on the top surface of the base 13. An outer ring of the top surface of the base 13 is fixedly installed with a column 14. The top end of the column 14 is fixedly installed with a top seat 15. A hydraulic telescopic shaft 16 is fixedly installed in the middle of the top seat 15. The telescopic end at the bottom of the hydraulic telescopic shaft 16 is fixedly installed with the upper mold 12; When casting an aluminum workpiece, the upper mold 12 is driven downward by the extension of the hydraulic telescopic shaft 16, so that the upper mold 12 and the lower mold 11 are closed, thereby closing the cavity. After that, the aluminum liquid can be cast through the gate 17. When the aluminum liquid in the cavity is cooled and formed, the hydraulic telescopic shaft 16 contracts, driving the upper mold 12 to reset upward, so that the upper mold 12 and the lower mold 11 are separated, so as to facilitate the removal of the cast aluminum workpiece. Example 3

[0025] See also Figures 1-8 As shown, the difference between this embodiment and the above embodiment is that the translation lifting assembly includes a support plate 21, the support plate 21 is fixedly mounted on the top surface of the upper mold 12, a mounting seat 22 is fixedly mounted on one side of the support plate 21, a positioning sleeve 23 is fixedly mounted on the mounting seat 22, a screw rod 24 is rotatably mounted inside the positioning sleeve 23, and a threaded sleeve 215 is threadedly mounted on the screw rod 24; a rotating sleeve 25 is movably sleeved on the outer ring of the positioning sleeve 23, a connecting frame 26 is fixedly mounted on the outer wall of the rotating sleeve 25, a connecting rod 27 is fixedly mounted on one end of the connecting frame 26, and a plunger 28 is fixedly mounted on the bottom end of the connecting rod 27; A transverse guide groove 216 and a vertical guide groove 217 are provided on the outer wall of the positioning sleeve 23, one end of the transverse guide groove 216 is communicated with the top end of the vertical guide groove 217, and a guide connection block 218 that can slide along the transverse guide groove 216 and the vertical guide groove 217 is fixedly installed between the rotating sleeve 25 and the threaded sleeve 215; the driving assembly includes a motor 29, a transmission shaft 212 and a driven bevel gear 214, the motor 29 is fixedly installed on one side of the support plate 21, and the output end of the motor 29 is transmission-installed with a driving bevel gear 210, the transmission shaft 212 is rotationally installed on the top surface of the upper mold 12, and a transmission bevel gear 1 211 meshingly connected to the driving bevel gear 210 is fixedly installed in the middle of the transmission shaft 212, and a transmission bevel gear 2 213 is fixedly installed at both ends of the transmission shaft 212, and the driven bevel gear 214 is fixedly installed at the bottom end of the screw rod 24 and meshingly connected to the transmission bevel gear 2 213; When the gate 17 and the riser 18 are pressurized, the active bevel gear 210 is driven to rotate by the motor 29, and the active bevel gear 210 meshes with the driving bevel gear 1 211 to rotate, so that the driving bevel gear 1 211 drives the transmission shaft 212 and the driving bevel gear 2 213 at both ends to rotate synchronously, and when the driving bevel gear 213 rotates, it meshes with the driven bevel gear 214 to rotate, thereby driving the screw rod 24 to rotate. When the screw rod 24 rotates, it first drives the threaded sleeve 215 to rotate synchronously, so that the threaded sleeve 215 drives the guide connecting block 218 to move along the horizontal guide groove 216 toward the vertical guide groove 217. At the same time, the guide connecting block 218 drives the rotating sleeve 25 to rotate synchronously on the surface of the positioning sleeve 23, so that the rotating sleeve 25 drives the connecting frame 26, the connecting rod 27 and the plunger 28 to rotate and make a circular motion, so that the plunger 28 moves toward the corresponding gate 17 or riser 18. When the guide connecting block 218 translates and abuts against the horizontal guide groove 216, the rotating sleeve 25 drives the connecting frame 26, the connecting rod 27 and the plunger 28 to rotate and make a circular motion. When the guide groove 216 is on the inner side wall of the junction of the vertical guide groove 217, the guide connecting block 218 is abutted and limited, and no longer rotates and translates. At this time, the plunger 28 moves to the top of the corresponding gate 17 and riser 18. Then, as the screw rod 24 continues to rotate, the screw rod 24 drives the threaded sleeve 215 to move downward. At this time, the threaded sleeve 215 drives the guide connecting block 218 to move downward along the vertical guide groove 217. At the same time, the guide connecting block 218 drives the rotating sleeve 25, the connecting frame 26, the connecting rod 27 and the plunger 28 to move downward synchronously, so that the two plungers 28 are respectively sealed and slidably inserted into the gate 17 and the riser 18, and move downward along the gate 17 and the riser 18, thereby extruding and pressurizing the gate 17, the riser 18 and the aluminum liquid in the cavity; through the cooperation of the driving component and the two sets of translation lifting components, the two plungers 28 can be driven at the same time to pressurize the gate 17 and the riser 18 respectively, making the pressurization process more convenient; When the aluminum workpiece in the cavity is cooled, shaped and demolded, the active bevel gear 210 is driven by the motor 29 to rotate in the opposite direction, so that the transmission energy of the transmission bevel gear 1 211, the transmission shaft 212, the transmission bevel gear 213 and the driven bevel gear 214 can drive the screw rod 24 to rotate in the opposite direction. At this time, the screw rod 24 drives the threaded sleeve 215 to move upward and reset, and at the same time, the threaded sleeve 215 drives the guide connecting block 218 to move upward and reset along the vertical guide groove 217, so that the guide connecting block 218 drives the rotating sleeve 25, the connecting frame 26, the connecting rod 27 and the plunger 28 to move upward synchronously. When the guide connecting block 218 moves and abuts against the top wall of the vertical guide groove 217, the plunger 28 is separated from the gate 17 and the riser 18. Then, as the screw rod 24 continues to rotate in the opposite direction, the screw rod 24 drives the threaded sleeve 215 to rotate synchronously, so that the threaded sleeve 215 drives the guide connecting block 218 to move and reset along the transverse guide groove 216. At this time, the guide connecting block 218 drives the rotating sleeve 25, the connecting frame 26, the connecting rod 27 and the plunger 28 to move and reset synchronously, so that the plunger 28 is staggered with the gate 17 and the riser 18, so as to facilitate the next round of casting process. Example 4

[0026] Please refer to Figures 1-4 、 Figures 7-9 As shown, the difference between this embodiment and the above embodiment is that the spraying assembly includes a pressure chamber 38 provided at the top of the anti-adhesive agent storage tank 31. The bottom end of the pressure chamber 38 is provided with a liquid inlet hole 316 communicating with the inside of the anti-adhesive agent storage tank 31, and a suction pipe extending to the bottom end inside the anti-adhesive agent storage tank 31 is connected and installed at the bottom end of the liquid inlet hole 316. A liquid discharge hole 319 is provided on one side of the pressure chamber 38, and the liquid discharge hole 319 and the spray head 32 are communicated through a liquid guide pipe 39; A one-way liquid inlet valve group is installed above the liquid inlet hole 316, a one-way liquid discharge valve group is installed on one side of the liquid discharge hole 319, a limit frame 315 located above the liquid discharge hole 319 is fixedly installed inside the pressure chamber 38, and a piston 313 is slidably installed at the upper end inside the pressure chamber 38. A return spring 314 is abutted and installed between the piston 313 and the limit frame 315; The top end of the piston 313 is fixedly installed with a lifting rod 34, and the top end of the lifting rod 34 extends above the pressure chamber 38 and is fixedly installed with a lifting wedge block 33; A connecting plate 36 is installed at the bottom end of the connecting frame 26, a support rod 35 is installed on the connecting plate 36, and a translation wedge block 37 that can slidably abut against the lifting wedge block 33 is fixedly installed at the bottom end of the support rod 35; When the connecting frame 26 drives the plunger 28 to rotate and translate in the direction of the gate 17 or the riser 18, the connecting frame 26 drives the connecting plate 36, the support rod 35 and the translation wedge block 37 to move synchronously. When the translation wedge block 37 moves past the position of the lifting wedge block 33, the translation wedge block 37 presses the lifting wedge block 33 downward, and at the same time the lifting wedge block 33 drives the piston 313 to move downward in the pressure chamber 38 through the lifting rod 34, so that the pressure in the pressure chamber 38 gradually increases. At this time, the one-way liquid discharge valve group on one side of the liquid discharge hole 319 is squeezed and opened by the positive pressure, so as to squeeze and discharge the anti-adhesive agent pre-absorbed in the pressure chamber 38 from the liquid discharge hole 319, and the discharged anti-adhesive agent is transported to the spray head 32 through the liquid guide pipe 39, and finally sprayed by the spray head 32 onto the bottom surface of the plunger 28 moving above the spray head 32 to improve the smoothness of the bottom surface of the plunger 28; When the translation wedge block 37 moves past the lifting wedge block 33, the piston 313 moves upward and resets in the pressure chamber 38 under the reset elastic force of the return spring 314, generating a negative pressure in the pressure chamber 38. At this time, the one-way liquid discharge valve group seals the liquid discharge hole 319, and the one-way liquid inlet valve group opens under the negative pressure, so as to suck the anti-adhesive agent in the anti-adhesive agent storage tank 31 into the pressure chamber 38 through the suction pipe and the liquid inlet hole 316 for the next use; The cooperation of the wedge block, the piston 313 and the one-way valve group can automatically spray the anti-adhesive agent onto the plunger 28 when the plunger 28 passes by, making the spraying of the anti-adhesive agent more convenient.

[0027] Further, the one-way liquid inlet valve group includes a liquid inlet sealing valve core 317 and a liquid inlet sealing spring 318. The liquid inlet sealing valve core 317 abuts against the top end of the liquid inlet hole 316, and the liquid inlet sealing spring 318 abuts between the liquid inlet sealing valve core 317 and the limit frame 315; the one-way liquid discharge valve group includes a liquid discharge sealing valve core 320 and a liquid discharge sealing spring 321. The liquid discharge sealing valve core 320 abuts against one side of the liquid discharge hole 319, and the liquid discharge sealing spring 321 abuts between the liquid discharge sealing valve core 320 and the liquid guide pipe 39; when positive pressure is generated in the pressure chamber 38, the liquid inlet sealing valve core 317 seals the liquid inlet hole 316 under the action of the liquid inlet sealing spring 318 and the positive pressure, while the liquid discharge sealing valve core 320 moves leftward under the action of the positive pressure to overcome the liquid discharge sealing spring 321, so that the liquid discharge hole 319 is opened, and the anti-adhesive agent in the pressure chamber 38 can be discharged through the liquid discharge hole 319; and when negative pressure is generated in the pressure chamber 38, the liquid discharge sealing valve core 320 seals the liquid discharge hole 319 under the action of the negative pressure suction force and the elastic force of the liquid discharge sealing spring 321. At the same time, the liquid inlet sealing valve core 317 moves upward under the action of the negative pressure suction force to overcome the elastic force of the liquid inlet sealing spring 318, so that the liquid inlet hole 316 is opened, and the anti-adhesive agent in the anti-adhesive agent storage tank 31 is sucked into the pressure chamber 38.

[0028] Further, a rotating shaft 310 is rotatably installed on the connecting plate 36. The top end of the support rod 35 is fixedly connected to the rotating shaft 310. A torsion spring 311 is sleeved on the end of the rotating shaft 310. One end of the torsion spring 311 is fixedly connected to the support rod 35, and the other end of the torsion spring 311 is fixedly connected to the inner wall of the connecting plate 36. A limit abutting block 312 abutting against the support rod 35 is fixedly installed at the lower end of the connecting plate 36; when the plunger 28 moves towards the gate 17 or the riser 18 and drives the translation wedge block 37 to move past the lifting wedge block 33, the limit abutting block 312 abuts against and limits the back of the support rod 35 to ensure the stability of the support rod 35 and the translation wedge block 37, so that the translation wedge block 37 can abut against and move the lifting wedge block 33 downward. When the plunger 28 moves back to its original position and drives the translation wedge block 37 to move in the reverse direction past the lifting wedge block 33, the translation wedge block 37 can gradually rotate and tilt under the abutting action of the lifting wedge block 33, drive the support rod 35 to rotate and tilt, and at the same time the translation wedge block 37 gradually rises, so that the translation wedge block 37 can move past the top surface of the lifting wedge block 33 without abutting and locking with the lifting wedge block 33. And when the translation wedge block 37 moves past the lifting wedge block 33, the support rod 35 rotates back to its original position under the elastic force of the torsion spring 311, so that the support rod 35 and the translation wedge block 37 return to the vertical state again. Embodiment 5

[0029] This embodiment discloses a casting process for high-hardness aluminum workpieces, and the specific steps are as follows: First, drive the lower die 11 and the upper die 12 to close the mold through the opening and closing control component, so that the cavity is closed. Then, convey the molten aluminum into the cavity through the gate 17. At the same time, the air in the cavity is discharged from the riser 18 until the cavity is filled with molten aluminum and the molten aluminum rises and spreads into the gate 17 and the riser 18. Then, drive the two sets of translation and lifting components to work synchronously through the drive component, so that the two sets of translation and lifting components drive the two plungers 28 to rotate and translate to the positions directly above the gate 17 and the riser 18 respectively. When the plunger 28 translates past the nozzle 32, the spraying component sucks the anti-sticking agent in the anti-sticking agent storage tank 31 and sprays the anti-sticking agent onto the bottom surface of the plunger 28 through the nozzle 32. After that, the two sets of translation and lifting components continue to drive the two plungers 28 to move downward synchronously, so that the two plungers 28 are respectively hermetically and slidably clamped into the gate 17 and the riser 18 and descend along the gate 17 and the riser 18, thereby squeezing and conveying the molten aluminum in the gate 17 and the riser 18 into the cavity and continuously pressurizing the molten aluminum in the gate 17, the riser 18 and the cavity. When the molten aluminum in the cavity cools and solidifies to form an aluminum workpiece, drive the lower die 11 and the upper die 12 to open the mold through the opening and closing control component. At the same time, continue to drive the two plungers 28 to move downward synchronously through the drive component and the two sets of translation and lifting components, so that the plungers 28 push and demold the aluminum workpiece. Finally, perform anodic oxidation coating on the cast aluminum workpiece to electroplate an oxide film on the surface of the aluminum workpiece.

[0030] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the invention, so that those skilled in the art can understand and utilize the invention well.

Claims

1. An aluminum workpiece casting device, comprising a casting mechanism, characterized in that: The casting mechanism comprises a lower die, an upper die and an opening and closing control assembly for driving the lower die and the upper die to open and close, a cavity is arranged between the lower die and the upper die, and a gate and a riser communicating with the cavity are arranged on the top surface of the upper die; The top surface of the upper mold is equipped with a pressurizing mechanism capable of simultaneously pressurizing the gate and the riser seals, the pressurizing mechanism comprising a driving assembly, two sets of translational lifting assemblies and two plungers, the two plungers being respectively installed on one side above the gate and the riser through the two sets of translational lifting assemblies, the driving assembly being capable of driving the two sets of translational lifting assemblies to work synchronously, so that the two sets of translational lifting assemblies drive the two plungers to rotate and translate respectively to the top of the gate and the riser, and then drive the two plungers to move downward synchronously; The top surface of the upper mold is also equipped with two groups of anti-sticking mechanisms corresponding to the two plungers one by one. The anti-sticking mechanism includes an anti-sticking agent storage tank, a nozzle and an injection assembly. The nozzle is installed and connected to one side of the top of the anti-sticking agent storage tank through the injection assembly, and the nozzle is located below the translation trajectory of the plunger. When the plunger translates over the nozzle, the injection assembly can suck the anti-sticking agent in the anti-sticking agent storage tank and spray it onto the bottom surface of the plunger through the nozzle.

2. The aluminum workpiece casting equipment according to claim 1, characterized in that: The opening and closing control component includes a base, the lower mold is fixedly installed on the top surface of the base, a column is fixedly installed on the outer ring of the top surface of the base, a top seat is fixedly installed on the top of the column, a hydraulic telescopic shaft is fixedly installed in the middle of the top seat, and the upper mold is fixedly installed on the telescopic end of the bottom of the hydraulic telescopic shaft.

3. The aluminum workpiece casting equipment according to claim 1, characterized in that: The translation lifting assembly comprises a support plate, the support plate is fixedly mounted on the top surface of the upper mold, a mounting seat is fixedly mounted on one side of the support plate, a positioning sleeve is fixedly mounted on the mounting seat, a screw rod is rotatably mounted inside the positioning sleeve, and a threaded sleeve is threadedly mounted on the screw rod; The outer ring of the positioning sleeve is movably sleeved with a rotating sleeve, a connecting frame is fixedly installed on the outer wall of the rotating sleeve, a connecting rod is fixedly installed at one end of the connecting frame, and the plunger is fixedly installed at the bottom end of the connecting rod.

4. The aluminum workpiece casting equipment according to claim 3, characterized in that: A transverse guide groove and a vertical guide groove are provided on the outer wall of the positioning sleeve, one end of the transverse guide groove is connected to the top of the vertical guide groove, and a guide connecting block that can slide along the transverse guide groove and the vertical guide groove is fixedly installed between the rotating sleeve and the threaded sleeve.

5. The aluminum workpiece casting equipment according to claim 3, characterized in that: The driving assembly includes a motor, a transmission shaft and a driven bevel gear. The motor is fixedly installed on one side of the support plate, and the output end of the motor is transmission-installed with a driving bevel gear. The transmission shaft is rotatably installed on the top surface of the upper mold. A transmission bevel gear 1 meshing and transmission-connected with the driving bevel gear is fixedly installed in the middle of the transmission shaft, and transmission bevel gear 2 is fixedly installed at both ends of the transmission shaft. The driven bevel gear is fixedly installed at the bottom end of the screw rod and meshing and transmission-connected with the transmission bevel gear 2.

6. The aluminum workpiece casting equipment according to claim 3, characterized in that: The spray assembly includes a pressure chamber arranged at the top of the anti-adhesive agent storage tank, a liquid inlet hole communicating with the inside of the anti-adhesive agent storage tank is arranged at the bottom of the pressure chamber, and a straw extending to the bottom of the inside of the anti-adhesive agent storage tank is connected and installed at the bottom of the liquid inlet hole, a liquid discharge hole is arranged on one side of the pressure chamber, and the liquid discharge hole and the spray head are communicated through a liquid guide tube; A one-way liquid inlet valve group is installed above the liquid inlet hole, a one-way liquid discharge valve group is installed on one side of the liquid discharge hole, a limit frame located above the liquid discharge hole is fixedly installed inside the pressure chamber, a piston is slidably installed at the upper end of the pressure chamber, and a return spring is installed in contact with the piston and the limit frame.

7. The aluminum workpiece casting equipment according to claim 6, characterized in that: A lifting rod is fixedly installed on the top of the piston, and the top of the lifting rod extends to the top of the pressure chamber and is fixedly installed with a lifting wedge block; A connecting plate is installed at the bottom end of the connecting frame, a supporting rod is installed on the connecting plate, and a translation wedge block capable of slidingly abutting against a lifting wedge block is fixedly installed on the bottom end of the supporting rod.

8. The aluminum workpiece casting equipment according to claim 6, characterized in that: The one-way liquid inlet valve group includes a liquid inlet sealing valve core and a liquid inlet sealing spring, wherein the liquid inlet sealing valve core abuts against the top end of the liquid inlet hole, and the liquid inlet sealing spring abuts between the liquid inlet sealing valve core and the limit frame; The one-way liquid discharge valve group comprises a liquid discharge sealing valve core and a liquid discharge sealing spring. The liquid discharge sealing valve core abuts against one side of the liquid discharge hole, and the liquid discharge sealing spring abuts between the liquid discharge sealing valve core and the liquid guide tube.

9. The aluminum workpiece casting equipment according to claim 7, characterized in that: A rotating shaft is rotatably installed on the connecting plate, the top end of the support rod is fixedly connected to the rotating shaft, the end of the rotating shaft is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the support rod, and the other end of the torsion spring is fixedly connected to the inner wall of the connecting plate, and a limiting abutment block abutting against the support rod is fixedly installed at the lower end of the connecting plate.

10. A casting process for a high-hardness aluminum workpiece, using an aluminum workpiece casting device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: First, the lower mold and the upper mold are driven to close the mold through the opening and closing control component to close the cavity. Then, the aluminum liquid is transported into the cavity through the gate. At the same time, the air in the cavity is discharged from the riser until the cavity is filled with aluminum liquid and the aluminum liquid rises and spreads to the gate and riser. Then, the driving assembly drives the two sets of translation and lifting assemblies to work synchronously, so that the two sets of translation and lifting assemblies drive the two plungers to rotate and translate respectively to the top of the gate and the riser. When the plunger translates over the nozzle, the spray assembly sucks the anti-sticking agent in the anti-sticking agent storage tank and sprays the anti-sticking agent onto the bottom surface of the plunger through the nozzle. After that, the two sets of translation lifting components continue to drive the two plungers to move downward synchronously, so that the two plungers are respectively sealed and slidably clamped into the gate and riser, and move downward along the gate and riser, thereby squeezing and transporting the aluminum liquid in the gate and riser into the cavity, and continuously pressurizing the aluminum liquid in the gate, riser and cavity; When the aluminum liquid in the cavity cools and shapes to form an aluminum workpiece, the lower and upper molds are driven to open through the opening and closing control component, and at the same time, the two plungers are driven to move downward synchronously through the driving component and two sets of translation and lifting components, so that the plungers push the aluminum workpiece to demould; Finally, the cast aluminum workpiece is anodized and a layer of oxide film is electroplated on the surface of the aluminum workpiece.

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