Aluminum alloy cylinder head gravity casting intelligent forming equipment

Abstract

The present application relates to aluminum alloy casting equipment technical field, specifically to a kind of aluminum alloy cylinder head gravity casting intelligent forming equipment, including furnace, mechanical arm and forming mechanism, the upper portion of the forming mechanism is provided with pouring mechanism, purging mechanism and high-pressure air pump;The present application is continuously heated by arranging electric heating wire in pouring ladle body, can avoid residual molten aluminum in pouring ladle to be cooled, clump and be attached to the wall of ladle, ensure that molten aluminum flows smoothly in the process of gravity filling, prevent the problems such as discharging blockage, casting shortage, stable continuous pouring condition, simultaneously with the help of heat-absorbing heat plate at the bottom end of pouring ladle to absorb the heat generated by electric heating wire, cooperate fan to send hot air to blowing nozzle, utilize the self-heat of pouring ladle to heat blowing sand core placed, not combined mold;Both can completely blow off floating sand attached to the surface of sand core, and can preheat sand core simultaneously, avoid local rapid cooling of sand core caused by cold air direct blowing at normal temperature, reduce casting porosity, cold shut defect.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy casting equipment technology, specifically to an intelligent forming equipment for gravity casting of aluminum alloy cylinder heads. Background Technology

[0002] The internal air passages and water passages of aluminum alloy cylinder heads are complex. The industry generally uses gravity casting process for forming. The existing intelligent gravity casting production line mainly consists of a furnace, a transfer robotic arm, and a rotating bearing mold platform. The operation process is as follows: the robotic arm carries a crucible to scoop aluminum liquid from the furnace and transfers it to the casting hopper above the bearing platform. The bearing platform rotates 90° to realize gravity filling of aluminum liquid.

[0003] The inventors have discovered at least the following problems in the prior art: Traditional casting hoppers do not have an integrated continuous heating and insulation structure. After the molten aluminum is poured into the casting hopper, the heat dissipation is rapid. The residual aluminum liquid is very easy to cool and clump together and adhere to the inner wall of the hopper, which narrows the aluminum liquid flow channel and is very likely to cause problems such as material discharge blockage and incomplete casting. It is impossible to achieve stable continuous casting operation. Existing equipment only uses room temperature compressed air to clean sand cores. The low temperature airflow coming into contact with the high temperature sand core will cause local sudden cooling of the sand core, which will easily produce defects such as pores and cold shuts after the aluminum liquid is filled. During the process of the bearing platform rotating from vertical to horizontal and the aluminum liquid filling the mold by gravity, the traditional casting hopper only has a simple slag-blocking structure on the discharge side, which can only intercept a small amount of surface slag and has no mechanism to automatically scrape off the slag accumulated on the hopper wall. The solidified residue of the aluminum liquid continues to adhere to the inner wall of the casting hopper, which will not only block the flow path of the aluminum liquid, but also hinder the heat dissipation of the casting hopper and reduce the stability of the hot air supply. The slag that is not intercepted is very likely to flow into the mold cavity with the aluminum liquid, causing the cylinder head casting to be mixed and scrapped. Moreover, the slag accumulated on the inner wall can only be cleaned manually at high temperature after the machine is stopped, which greatly reduces the efficiency of continuous production. At the same time, manual high temperature operation poses a risk of burns.

[0004] Therefore, this solution provides an intelligent forming equipment for gravity casting of aluminum alloy cylinder heads to solve the above problems. Summary of the Invention

[0005] In view of the problems in the existing technology, such as aluminum liquid clumping and blockage in the casting hopper and cold shut pores in the casting caused by room temperature blowing of the sand core, the present invention provides an intelligent forming equipment for gravity casting of aluminum alloy cylinder heads to solve the above problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A gravity casting intelligent forming equipment for aluminum alloy cylinder heads includes a furnace, a robotic arm, and a forming mechanism. Above the forming mechanism are a casting mechanism, a purging mechanism, and a high-pressure air pump. The forming mechanism includes a support base and a support platform rotatably connected above it. Cylinder 1 and Cylinder 2 are mounted above both ends of the support platform. A bottom mold is mounted in the middle of the support platform, and side molds 1 and 2 are arranged on both sides of the bottom mold. The casting mechanism is located above the side molds 2 and includes a casting hopper, a slag baffle, a slag scraper assembly, and... The heating wire, slag baffle, and slag scraping assembly are located on the liquid outlet side and liquid inlet side at the port of the casting hopper, respectively. The heating wire is fixedly connected inside the casting hopper. The slag scraping assembly includes a buoyancy scraper and limiting rods fixedly connected above its two ends. The purging mechanism includes a connecting box and a heat-conducting air duct that are interconnected. A bearing plate is provided on one side of the heat-conducting air duct, and equidistantly distributed supports are provided on one side of the bearing plate. An external toothed ring is fixedly connected below the bearing platform. A drive group is installed inside the bearing base, and the output end of the drive group is connected to the external toothed ring.

[0007] Preferably, the first side mold and the second side mold are respectively installed at the output ends of the first cylinder and the second cylinder, the two ends of the bottom mold are provided with side baffles, the side baffles are fixedly connected to the top of the bearing platform, and a sand core is placed on the top of the bottom mold.

[0008] Preferably, a heat-conducting plate is inserted into the bottom end of the casting hopper, the heat-conducting plate is offset from the heating wire, part of the heat-conducting plate is located inside the connecting box, two fans are installed on the side of the connecting box away from the heat-conducting air pipe, a slot is provided on the liquid outlet side of the upper port of the casting hopper, and a limit block is fixedly connected to the liquid inlet side of the upper port of the casting hopper.

[0009] Preferably, the two ends of the slag baffle are engaged in the slots, the slag baffle is fixedly connected to the drain plate inside the casting hopper, and the slag scraping assembly also includes a receiving cylinder rotatably connected in the limiting block.

[0010] Preferably, the buoyancy scraper has a hollow cavity inside, the limiting rod passes through the receiving cylinder, and the two ends of the receiving cylinder are fixedly connected to the shafts, which pass through the limiting block.

[0011] Preferably, a rack and a limiting rod are fixedly connected to the upper part of both ends of the bearing plate, and both the rack and the limiting rod pass through the support guide block. The bottom of the rack meshes with a gear. The bearing plate has equidistantly distributed rotating grooves. The inner wall of each rotating groove has a spiral groove, and the length of the spiral groove gradually decreases. The spiral groove is a quarter-helix.

[0012] Preferably, the bracket has a purge nozzle installed inside, a rotating shaft is fixedly connected to one side of the bracket, a counterweight is fixedly connected to the bottom of the bracket, the rotating shaft is rotatably connected inside the rotating groove, and two annularly distributed protrusions are fixedly connected to the outer periphery of the rotating shaft, with the protrusions located inside the spiral groove.

[0013] Preferably, a three-way pipe is installed above the heat-conducting air duct at equal intervals, a support guide block is fixedly connected above the heat-conducting air duct, a drive motor is installed on one side of the heat-conducting air duct, a gear is fixedly connected to the output end of the drive motor, and the two sides of the three-way pipe are respectively the air inlet port and the air outlet port. The air inlet port is connected to the output end of the high-pressure air pump through a hose, and the air outlet port is connected to the input end of the blow-off nozzle through a hose.

[0014] Preferably, the bearing plate is divided into four sections and is fixedly connected to each other by bolts.

[0015] Preferably, the output end of the robotic arm is equipped with a crucible, and the high-pressure air pump is installed above the cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves continuous heating and heat preservation by arranging electric heating wires inside the casting hopper. This prevents the residual molten aluminum in the casting hopper from cooling rapidly and agglomerating and adhering to the hopper wall, ensuring smooth flow of molten aluminum during gravity filling and preventing problems such as material blockage and incomplete casting, thus stabilizing continuous casting conditions.

[0017] This invention utilizes a heat-conducting plate at the bottom of the casting hopper to absorb the heat generated by the heating wire, and a fan to deliver hot air to the blowing nozzle. The residual heat of the casting hopper itself is used to perform hot blowing on the sand core that has been placed but not yet closed. This can thoroughly remove the floating sand attached to the surface of the sand core, and also preheat the sand core simultaneously, avoiding the sudden cooling of the sand core caused by direct blowing of cold air at room temperature, thus reducing the porosity and cold shut defects in the casting.

[0018] When performing weight casting, i.e. when the support platform rotates to the vertical aluminum pouring station, the mechanical linkage structure of the spiral groove inside the support plate and the counterweight block of the bracket enables each purging nozzle to automatically rotate and switch to face the inside of the casting hopper. Moreover, multiple sets of nozzles are staggered and distributed to spray hot air onto the surface of the aluminum liquid in the casting hopper from all directions. The hot air isolates the aluminum liquid from large-area contact with room temperature air, inhibits the oxidation and peeling of the aluminum liquid surface, and reduces the formation of slag. In addition, a single purging mechanism takes into account both sand core cleaning and aluminum liquid heat preservation processes, simplifying the overall structure of the machine and reducing the space occupied by the equipment.

[0019] In this invention, during the process of the supporting platform rotating from vertical to horizontal and the aluminum liquid flowing out of the mold by gravity, the slag baffle on the liquid outlet side of the casting hopper, together with the sluice plate, intercepts the surface slag of the aluminum liquid, preventing the slag from flowing into the mold cavity with the aluminum liquid and causing casting inclusions. At the same time, the buoyancy scraper with a hollow cavity on the liquid inlet side moves down synchronously with the drop of the aluminum liquid level, automatically scraping off the aluminum slag adhering to the inner wall of the casting hopper. The scraped slag is uniformly collected in the sluice plate for centralized collection, eliminating the need for frequent machine shutdowns for manual high-temperature slag cleaning, improving the continuous production efficiency of the equipment, and the absence of a thick layer of slag accumulation on the hopper wall can stabilize the heat exchange effect of the heat-conducting plate, ensuring a constant sand core hot blowing temperature. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the molding mechanism of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the molding mechanism of the present invention; Figure 4 This is a schematic diagram showing the disassembled structure of the molding mechanism and the purging mechanism of the present invention; Figure 5 This is a schematic diagram of the internal structure of the casting mechanism of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the casting mechanism of the present invention; Figure 7 This is a schematic diagram of the slag-blocking plate of the present invention; Figure 8 This is a schematic diagram of the slag scraping assembly of the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the purging mechanism of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of section A; Figure 11 For the present invention Figure 9 A schematic diagram of the middle section; Figure 12 This is a schematic diagram of the disassembled structure of the carrier plate of the present invention.

[0021] In the picture: 1. Furnace; 2. Robotic arm; 21. Crucible; 3. Molding mechanism; 31. Support base; 32. Support platform; 321. Cylinder 1; 322. Cylinder 2; 33. Drive assembly; 34. External gear ring; 35. Bottom mold; 36. Side baffle; 37. Side mold 1; 38. Side mold 2; 39. Sand core; 391. Molded part; 4. Casting mechanism; 41. Casting hopper body; 411. Slot; 412. Limiting block; 42. Slag baffle; 421. Sluice plate; 43. Slag scraper assembly; 431. Buoyancy scraper; 432. Limiting rod; 433. Receiving cylinder; 434. Shaft; 435. Hollow cavity; 44. Heating wire; 45. Heat-conducting plate; 5. Blowing mechanism; 51. Connecting box; 52. Fan; 53. Heat-conducting air duct; 531. Support guide block; 54. T-pipe; 541. Air inlet port; 542. Air outlet port; 55. Drive motor; 551. Gear; 56. Bearing plate; 561. Rotating groove; 562. Spiral groove; 57. Bracket; 571. Rotating shaft; 572. Counterweight; 573. Protrusion; 58. Blowing nozzle; 59. Rack and pinion; 591. Limiting rod; 6. High-pressure air pump. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Example: Please refer to Figures 1-12 The above describes an intelligent forming equipment for gravity casting of aluminum alloy cylinder heads, which includes a furnace 1, a robotic arm 2 and a forming mechanism 3. Above the forming mechanism 3 are a casting mechanism 4, a purging mechanism 5 and a high-pressure air pump 6. The molding mechanism 3 includes a support base 31 and a support platform 32 rotatably connected above it. Cylinder 1 321 and Cylinder 2 322 are installed above both ends of the support platform 32. A bottom mold 35 is installed in the middle of the support platform 32. Side mold 1 37 and Side mold 2 38 are provided on both sides of the bottom mold 35. The casting mechanism 4 is located above the side mold 38. The casting mechanism 4 includes a casting hopper 41, a slag baffle 42, a slag scraping assembly 43, and a heating wire 44. The slag baffle 42 and the slag scraping assembly 43 are located on the liquid outlet side and the liquid inlet side at the port of the casting hopper 41, respectively. The heating wire 44 is fixedly connected inside the casting hopper 41. The slag scraper assembly 43 includes a buoyancy scraper 431 and limiting rods 432 fixedly connected above its two ends; The purging mechanism 5 includes a connecting box 51 and a heat-conducting air duct 53 that are interconnected. A support plate 56 is provided on one side of the heat-conducting air duct 53, and a bracket 57 that is evenly distributed on one side of the support plate 56. An external gear ring 34 is fixedly connected to the lower part of the bearing platform 32, and a drive group 33 is installed inside the bearing base 31. The output end of the drive group 33 is connected to the external gear ring 34. Among them, furnace 1, robotic arm 2 and forming mechanism 3 constitute the equipment of the existing intelligent gravity casting forming process. Furnace 1 is a hot melt furnace that can melt and stir aluminum blocks. Robotic arm 2 is an intelligent robot used to quantitatively transfer molten aluminum. In addition, furnace 1 and forming mechanism 3 are installed in the groove in the ground, while robotic arm 2 is installed on the ground. The output end of the external gear ring 34 is equipped with a gear, which allows the bearing platform 32 to switch between horizontal and vertical states. In the vertical state, it is used to facilitate the entry of molten aluminum. The process of changing from the vertical state to the horizontal state is gravity casting. The bottom mold 35, side baffle 36, side mold one 37 and side mold two 38 together constitute the cylinder head mold, and the gap between the sand core 39 and the mold allows the molten aluminum to enter, thereby forming the molded part 391.

[0024] In this embodiment, side mold 1 37 and side mold 2 38 are respectively installed at the output ends of cylinder 1 321 and cylinder 2 322. Side baffles 36 are provided at both ends of bottom mold 35. The side baffles 36 are fixedly connected to the top of the bearing platform 32. A sand core 39 is placed on the top of bottom mold 35. Among them, cylinder 321 and cylinder 322 are used to drive side mold 37 to move closer to both sides of bottom mold 35, thereby clamping and positioning sand core 39 and sealing it to form a mold.

[0025] In this embodiment, a heat-conducting plate 45 is inserted into the bottom end of the casting hopper 41. The heat-conducting plate 45 is offset from the heating wire 44. Part of the heat-conducting plate 45 is located inside the connecting box 51. Two fans 52 are installed on the side of the connecting box 51 away from the heat-conducting air pipe 53. A slot 411 is provided on the liquid outlet side of the upper port of the casting hopper 41. A limit block 412 is fixedly connected to the liquid inlet side of the upper port of the casting hopper 41. Here, the bottom of the casting hopper 41 is in a vertical position, as can be seen from the following: Figure 5 , Figure 6 ; The heating wire 44 is an existing electric heating component, which, when energized, can heat and maintain the temperature of the casting hopper 41; the material of the casting hopper 41 is the same as that of existing crucibles; (Reference) Figure 5 The left side is the liquid outlet side, and the right side is the liquid inlet side.

[0026] In this embodiment, the two ends of the slag baffle 42 are engaged in the slot 411, the slag baffle 42 is located inside the casting hopper 41 and is fixedly connected to the drain plate 421, and the slag scraping assembly 43 also includes a receiving cylinder 433 rotatably connected in the limiting block 412. The slag filter 421 is used to catch the slag on the surface of the molten aluminum. After use, the slag baffle 42 can be pulled out to clean the slag filter 421.

[0027] In this embodiment, the buoyancy scraper 431 has a hollow cavity 435 inside, the limiting rod 432 passes through the receiving cylinder 433, and the two ends of the receiving cylinder 433 are fixedly connected to the shaft 434, which passes through the limiting block 412. The buoyancy scraper 431 has a dense silicon carbide ceramic sheet inside, and its hollow state allows it to float above the aluminum liquid and move as the aluminum liquid moves downward when it is poured. At the same time, the shaft 434 is rotatably connected to the limiting block 412 so that the buoyancy scraper 431 is always in contact with the right side of the aluminum liquid surface, and thus scrapes the inner wall of the casting bucket 41 as the aluminum liquid is poured.

[0028] In this embodiment, a rack rod 59 and a limiting rod 591 are fixedly connected to the upper ends of the bearing plate 56, respectively. Both the rack rod 59 and the limiting rod 591 pass through the support guide block 531. The bottom of the rack rod 59 meshes with a gear 551. The bearing plate 56 is provided with equidistantly distributed rotating grooves 561. The inner wall of each rotating groove 561 is provided with a spiral groove 562, and the length of the spiral groove 562 gradually decreases. The spiral groove 562 is a quarter spiral. The limiting rod 591 is used to limit the sliding direction of the support plate 56; the drive motor 55 can drive the support plate 56 to slide after it is operated. The pitch of the three spiral grooves 562 in the three rotating grooves 561 gradually decreases. Thus, after the bearing platform 32 is in a vertical state, the bracket 57 is also in a vertical state through the counterweight 572, and the length of the bracket extending from top to bottom gradually decreases, thereby avoiding the hot flow blown out from the blow nozzle 58.

[0029] In this embodiment, a purge nozzle 58 is installed inside the bracket 57, a rotating shaft 571 is fixedly connected to one side of the bracket 57, a counterweight 572 is fixedly connected to the bottom of the bracket 57, the rotating shaft 571 is rotatably connected inside the rotating groove 561, and two annularly distributed protrusions 573 are fixedly connected to the periphery of the rotating shaft 571, the protrusions 573 being located inside the spiral groove 562. Among them, the purge nozzle 58 is used to guide the hot air in the heat-conducting air pipe 53 to the purge nozzle 58 and spray it out after cooperating with the operation of the high-pressure air pump 6. The rotating shaft 571, in conjunction with the protrusion 573 and the counterweight 572, can automatically change according to the state of the bearing platform 32.

[0030] In this embodiment, a three-way pipe 54 with equal spacing is installed above the heat-conducting air duct 53, and a support guide block 531 is fixedly connected above the heat-conducting air duct 53. A drive motor 55 is installed on one side of the heat-conducting air duct 53, and a gear 551 is fixedly connected to the output end of the drive motor 55. The two sides of the three-way pipe 54 are respectively the air inlet port 541 and the air outlet port 542. The air inlet port 541 is connected to the output end of the high-pressure air pump 6 through a hose, and the air outlet port 542 is connected to the input end of the blow nozzle 58 through a hose. The high-pressure air pump 6 is used to drive the heat flow in the heat-conducting air duct 53 into the blowing nozzle 58; the fan 52 can introduce external air into the connector box 51, so that it is heated by the heat-conducting plate 45 and enters the heat-conducting air duct 53.

[0031] In this embodiment, the support plate 56 is divided into four sections and is fixedly connected to each other by bolts; The bearing plates 56 can be disassembled and reassembled, which facilitates the installation of the rotating shaft 571 so that the protrusion 573 is located inside the spiral groove 562.

[0032] In this embodiment, a crucible 21 is installed at the output end of the robotic arm 2, and a high-pressure air pump 6 is installed above the cylinder 321. The crucible 21 is used to facilitate the robotic arm 2 in scooping molten aluminum from inside the furnace 1 and transferring it to the inside of the casting hopper 41 during operation.

[0033] The working principle of this invention is as follows: When it is necessary to produce aluminum alloy cylinder heads, the sand core 39 can be placed above the bottom mold 35. Then, the cylinder 1 321 and cylinder 2 322 are operated by the external control device, which causes the side mold 1 37 and side mold 2 38 to clamp and seal the two sides of the sand core 39. Then, the drive group 33 is operated by the external control device, which causes the bearing platform 32 and the object above it to rotate 90 degrees. Then, the robotic arm 2 scoops out the aluminum liquid from the inside of the furnace 1 through the crucible 21 and pours it into the inside of the casting hopper 41. Finally, the drive group 33 is operated again, which causes the bearing platform 32 to return to the horizontal state. During this process, the aluminum liquid in the casting hopper 41 will flow into the mold by gravity and be formed into an aluminum alloy cylinder head. Before the side mold 1 37 and side mold 2 38 move closer to and clamp the sand core 39 in the above process, the external control equipment simultaneously operates the heating wire 44, fan 52, drive motor 55 and high-pressure air pump 6. When the heating wire 44 operates, it generates heat to heat the casting hopper 41 and the heat-conducting plate 45, thereby keeping the aluminum liquid entering it warm and reducing the cooling rate of the aluminum liquid, so that it can be poured into the mold more easily and reduce residue. In addition, the operation of the fan 52 allows external airflow to enter the interior of the connecting box 51. Since the heat-conducting plate 45 is heated by the heating wire 44 and part of the heat-conducting plate 45 is located inside the connecting box 51, the air entering the connecting box 51 can be heated and transported to the interior of the heat-conducting air duct 53. Once the sand core 39 is placed, the drive motor 55 and the high-pressure air pump 6 can operate. The drive motor 55 will cause the gear 551 at its output end to drive the rack 59, the support plate 56 and the bracket 57 to move upwards of the sand core 39. The operation of the high-pressure air pump 6 can spray external airflow through the air inlet port 541 and the air outlet port 542 from the purge nozzle 58. Since the bottom of the three-way pipe 54 is connected to the inside of the heat-conducting air pipe 53, the heat flow in the heat-conducting air pipe 53 driven by the external airflow can be sprayed out from the purge nozzle 58. Combined with the operation of the drive motor 55, the surface of the sand core 39 can be automatically purged after the sand core 39 is placed. This can remove the floating sand on the surface of the sand core 39 and preheat the surface of the sand core 39. When the support platform 32 is rotated from a vertical state to a horizontal state, the molten aluminum in the casting hopper 41 will flow out from the gap between the liquid outlet side and the slag baffle 42. At this time, the slag above the aluminum will be blocked by the slag baffle 421, thus preventing the slag from entering the mold. Furthermore, when the molten aluminum enters the interior of the casting hopper 41, the buoyancy scraper 431 will float up. Since the buoyancy scraper 431 is rotatably connected to the limiting block 412 through the limiting rod 432 and the receiving cylinder 433 and is located on the liquid inlet side of the casting hopper 41, as the state of the bearing platform 32 changes, the buoyancy scraper 431 will rotate around the shaft 434 and extend into the casting hopper 41 through the limiting rod 432, so that the bottom of the buoyancy scraper 431 is always in contact with the right side of the molten aluminum surface. Thus, the slag remaining on the inner wall of the casting hopper 41 can be scraped off to the drain plate 421 during the pouring of molten aluminum. When the slag baffle 42 changes from horizontal to vertical, the weight of the counterweight 572 causes the support 57, along with the purging nozzle 58, to rotate 90 degrees around the rotating shaft 571. This causes the purging nozzle 58 to align with the inside of the casting hopper 41. During the rotation, the protrusion 573 is located inside the spiral groove 562, causing the rotating shaft 571, along with the support 57 and the purging nozzle 58, to extend to one side a certain distance. Since the length of the spiral groove 562 in the three rotating grooves 561 gradually decreases, the slag baffle 42 in the vertical state and the three supports 57 will extend a certain distance and be staggered to align with the inside of the casting hopper 41. Subsequently, the operation of the drive motor 55 heats the surface of the molten aluminum poured into the casting hopper 41, thereby further reducing the formation of slag on the surface of the molten aluminum.

[0034] The furnace 1, robotic arm 2, and forming mechanism 3 used in this invention are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the furnace 1, robotic arm 2, and forming mechanism 3 will not be described in detail here.

[0035] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent forming equipment for gravity casting of aluminum alloy cylinder heads, comprising a furnace (1), a robotic arm (2), and a forming mechanism (3), characterized in that: The molding mechanism (3) is equipped with a casting mechanism (4), a blowing mechanism (5) and a high-pressure air pump (6) above it. The forming mechanism (3) includes a support base (31) and a support platform (32) rotatably connected above it. A cylinder one (321) and a cylinder two (322) are installed above both ends of the support platform (32). A bottom mold (35) is installed in the middle of the support platform (32). A side mold one (37) and a side mold two (38) are provided on both sides of the bottom mold (35). The casting mechanism (4) is located above the second side mold (38). The casting mechanism (4) includes a casting hopper (41), a slag baffle (42), a slag scraping assembly (43), and a heating wire (44). The slag baffle (42) and the slag scraping assembly (43) are located on the liquid outlet side and the liquid inlet side at the port of the casting hopper (41), respectively. The heating wire (44) is fixedly connected inside the casting hopper (41). The slag scraper assembly (43) includes a buoyancy scraper (431) and limiting rods (432) fixedly connected above its two ends; The purging mechanism (5) includes a connecting box (51) and a heat-conducting air duct (53) that are connected to each other. A support plate (56) is provided on one side of the heat-conducting air duct (53), and a support bracket (57) is provided on one side of the support plate (56). An external gear ring (34) is fixedly connected to the lower part of the bearing platform (32), and a drive group (33) is installed inside the bearing base (31). The output end of the drive group (33) is connected to the external gear ring (34).

2. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The first side mold (37) and the second side mold (38) are respectively installed at the output ends of the first cylinder (321) and the second cylinder (322). The bottom mold (35) is provided with side baffles (36) at both ends. The side baffles (36) are fixedly connected to the top of the bearing platform (32). A sand core (39) is placed on the top of the bottom mold (35).

3. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: A heat-conducting plate (45) is inserted into the bottom end of the casting hopper (41). The heat-conducting plate (45) is offset from the heating wire (44). Part of the heat-conducting plate (45) is located inside the connecting box (51). Two fans (52) are installed on the side of the connecting box (51) away from the heat-conducting air pipe (53). A slot (411) is opened on the liquid outlet side of the upper port of the casting hopper (41). A limit block (412) is fixedly connected to the liquid inlet side of the upper port of the casting hopper (41).

4. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The two ends of the slag baffle (42) are engaged in the slot (411). The slag baffle (42) is located inside the casting bucket (41) and is fixedly connected to the drain plate (421). The slag scraping assembly (43) also includes a receiving cylinder (433) rotatably connected in the limiting block (412).

5. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The buoyancy scraper (431) has a hollow cavity (435) inside, the limiting rod (432) passes through the receiving cylinder (433), and the two ends of the receiving cylinder (433) are fixedly connected to the shaft (434), and the shaft (434) passes through the limiting block (412).

6. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: A rack rod (59) and a limiting rod (591) are fixedly connected to the upper ends of the bearing plate (56), respectively. Both the rack rod (59) and the limiting rod (591) pass through the support guide block (531). The bottom of the rack rod (59) meshes with a gear (551). The bearing plate (56) is provided with equidistant rotating grooves (561). The inner wall of the rotating grooves (561) is provided with spiral grooves (562), and the length of the spiral grooves (562) gradually decreases. The spiral grooves (562) are quarter-helical.

7. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The bracket (57) is equipped with a purge nozzle (58). A rotating shaft (571) is fixedly connected to one side of the bracket (57). A counterweight (572) is fixedly connected to the bottom of the bracket (57). The rotating shaft (571) is rotatably connected to the inside of the rotating groove (561). Two annularly distributed protrusions (573) are fixedly connected to the periphery of the rotating shaft (571). The protrusions (573) are located inside the spiral groove (562).

8. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The heat-conducting air duct (53) is equipped with equidistantly distributed three-way pipes (54), and a support guide block (531) is fixedly connected above the heat-conducting air duct (53). A drive motor (55) is installed on one side of the heat-conducting air duct (53), and a gear (551) is fixedly connected to the output end of the drive motor (55). The two sides of the three-way pipe (54) are respectively the air inlet port (541) and the air outlet port (542). The air inlet port (541) is connected to the output end of the high-pressure air pump (6) through a hose, and the air outlet port (542) is connected to the input end of the blow-off nozzle (58) through a hose.

9. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The bearing plate (56) is divided into four sections and is fixed to each other by bolts.

10. The intelligent forming equipment for gravity casting of aluminum alloy cylinder heads according to claim 1, characterized in that: The output end of the robotic arm (2) is equipped with a crucible (21), and the high-pressure air pump (6) is installed above the cylinder (321).

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