A low-pressure casting equipment for the production of aluminum alloy automotive parts

Abstract

This invention discloses a low-pressure casting equipment for the production of aluminum alloy automotive parts, relating to the field of aluminum alloy casting technology. The invention comprises a casting forming layer, an aluminum liquid conveying layer, and a furnace body lifting layer on the inner side of the casting frame. A horizontal guide frame connects the aluminum liquid conveying layer and the furnace body lifting layer. The casting forming layer and the aluminum liquid conveying layer are connected by an aluminum liquid inlet. The furnace body lifting layer is equipped with a vertical drainage pipe. A second aluminum liquid inlet, communicating with the forming mold cavity, is located at the bottom of the lower mold plate. A furnace body cover mechanism is slidably mounted on the horizontal guide frame. A riser pipe extending through the top of the furnace body cover is located inside the cover. A lifting and scraping assembly is slidably mounted inside the vertical drainage pipe. The aluminum liquid scraped by the aluminum liquid scraper on the lifting and scraping assembly is collected by the vertical drainage pipe. This invention effectively avoids the problem of reduced casting quality caused by the solidification of the aluminum liquid on the inner wall of the riser pipe through the up-and-down movement of the aluminum liquid scraper.

Description

Technical Field

[0001] This invention belongs to the field of aluminum alloy casting technology, and in particular relates to a low-pressure casting equipment for the production of aluminum alloy automotive parts. Background Technology

[0002] Low-pressure casting refers to a casting method in which the mold is generally placed above a sealed crucible, and compressed air is introduced into the crucible to create low pressure on the surface of the molten metal. This causes the molten metal to rise through the riser tube to fill the mold and control solidification. In traditional low-pressure forging processes, molten aluminum tends to remain on the inner wall of the riser tube. When the molten aluminum on the inner wall of the riser tube solidifies, it can easily carry small particles formed by the molten aluminum into the mold cavity as the subsequent molten aluminum rises, which reduces the quality of the cast car wheel hub.

[0003] In existing technologies, to avoid the impact of small particles generated by the solidification of molten aluminum on the inner wall of the riser tube on casting quality, some low-pressure casting equipment uses the gravity of the molten aluminum falling back to drive the buffer plate down and scrub the inner wall of the riser tube. Molten aluminum on the surface of the mesh plate on the buffer plate is prone to solidification, which can block the mesh of the mesh plate. Once the mesh plate is blocked, it will affect the subsequent rise of molten aluminum through the riser tube into the mold cavity, and the machine must be stopped to clean the mesh plate.

[0004] Some low-pressure casting equipment uses a U-shaped scraper that fits against the inner wall of the riser pipe to scrape and clean the molten aluminum on the inner wall. Although this method of cleaning molten aluminum can solve the problem of downtime cleaning caused by mesh blockage compared to perforated plates, because the scraper is always in contact with the inner wall of the riser pipe, molten aluminum will remain on the scraper surface and at the contact point between the scraper and the riser pipe. After solidification, the small particles formed will inevitably be transported into the casting cavity and affect the casting quality. Summary of the Invention

[0005] The purpose of this invention is to provide a low-pressure casting equipment for the production of aluminum alloy automotive parts. Through the structural design of the casting control mechanism, mold mechanism, furnace body cover mechanism and aluminum liquid removal mechanism, the problems in the background art mentioned above are solved.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is a low-pressure casting equipment for the production of aluminum alloy automotive parts, including a casting control mechanism. The casting control mechanism includes a casting frame, and the inner side of the casting frame is arranged from top to bottom as a casting forming layer, an aluminum liquid conveying layer, and a furnace body lifting layer. A horizontal guide frame is provided between the aluminum liquid conveying layer and the furnace body lifting layer. The casting forming layer and the aluminum liquid conveying layer are connected through an aluminum liquid inlet. A vertical drain pipe is provided in the furnace body lifting layer. A mold mechanism is provided in the casting forming layer, and the mold mechanism includes a lower mold, an upper mold, and two side molds. The system includes: a mold cavity, with a molten aluminum inlet at the bottom of the lower mold plate communicating with the mold cavity; a heat-preserving furnace located on the furnace body lifting layer, coaxially arranged with the mold mechanism; a furnace body cover mechanism located on the molten aluminum conveying layer, slidably mounted on a horizontal guide frame, the furnace body cover mechanism including a furnace body cover, with a liquid riser pipe penetrating its top inside the furnace body cover; and a molten aluminum removal mechanism located inside the casting frame, the molten aluminum removal mechanism including a lifting scraper assembly slidably arranged inside a vertical drain pipe, the lifting scraper assembly including a molten aluminum scraper, the molten aluminum scraped by the scraper being collected by the vertical drain pipe.

[0007] In this embodiment of the invention, two vertical limiting seats are fixed inside the furnace body lifting layer, the heat preservation furnace is installed on the heat insulation base, a hydraulic cylinder connected to the heat insulation base is installed at the bottom of the casting frame, the heat insulation base is slidably disposed between the two vertical limiting seats, roller grooves are provided on both inner sidewalls of the horizontal guide frame, and a power screw is connected to the output end of a motor installed on one side of the horizontal guide frame.

[0008] In this embodiment of the invention, a first mounting bracket is fixed to the bottom of the casting frame, a second mounting bracket is fixed to the inner side of the casting forming layer, the vertical guide pipe on the inner side of the furnace body lifting layer is fixedly connected to the first mounting bracket, a second motor is installed on the top of the second mounting bracket, two limiting slide grooves are symmetrically opened on the inner side of the casting forming layer, a vertical guide port connecting the aluminum liquid conveying layer is provided below the second mounting bracket, and an axial slide is opened on the circumferential side of the vertical guide pipe.

[0009] In this embodiment of the invention, the furnace cover mechanism further includes a movable frame slidably mounted on a horizontal guide frame. The furnace cover is fixedly mounted on the top of the movable frame and its bottom is an open structure. The movable frame is sleeved on a power screw and the two are threaded together. The movable frame is equipped with drag-reducing rollers that cooperate with roller grooves on both opposite sides. A horizontal slot is opened on one side of the movable frame, and a furnace top sealing plate that slidably cooperates with the roller groove is fixed on the other side of the movable frame. A gas supply pipe is installed on the periphery of the furnace cover close to the top, and an aluminum liquid filling pipe is installed on the top of the furnace top sealing plate.

[0010] In this embodiment of the invention, the lifting and scraping assembly further includes an aluminum liquid collection pipe disposed in a vertical drainage pipe, the aluminum liquid scraping component is connected to the top of the aluminum liquid collection pipe, and a linkage component that cooperates with an axial slide is fixed on the peripheral side of the aluminum liquid collection pipe, and a channel adapter ball is fixedly installed on the linkage component.

[0011] In this embodiment of the invention, the aluminum liquid removal mechanism further includes a scraping control component; wherein, the scraping control component includes a transmission column disposed inside the furnace body lifting layer and rotatably connected to the first mounting frame, a first transmission wheel fixedly installed at the bottom of the transmission column, the first transmission wheels being connected to each other by a transmission belt, a closed guide groove being opened on the peripheral side of the transmission column, and the linkage being slidably sleeved on the transmission column with the groove adapter ball slidingly engaging with the closed guide groove.

[0012] In this embodiment of the invention, a linkage rod extending to the inner side of the second mounting bracket is fixed at the top of the transmission column, and a second transmission wheel is fixedly installed on the periphery of the linkage rod. The output end of the motor is connected to the corresponding linkage rod. A support part is rotatably provided at the bottom of the second mounting bracket. Several curved scraper blades are arranged in a circumferential array at the bottom of the support part. The third transmission wheel fixed on the periphery of the support part is connected to the corresponding second transmission wheel through a transmission belt.

[0013] In this embodiment of the invention, two support frames are symmetrically fixed on the inner side of the horizontal guide frame, and an aluminum liquid collection box that fits against the outer wall of the heat preservation furnace is fixed at the end of the support frame. A scraping tool opening coaxial with the vertical drainage pipe is opened at the top of the support frame, and a drainage oblique opening extending to the periphery of the scraping tool opening is opened at the top of the aluminum liquid collection box.

[0014] In this embodiment of the invention, the mold mechanism further includes two symmetrically arranged support seats. The cylinder output end on the support seat is connected to a U-shaped frame that is slidably connected to the limiting slide groove. The motor output end at the top of the U-shaped frame is connected to a rotating shaft. An offset gear is fixed on the circumferential side of the rotating shaft. An arc-shaped guide seat and an offset gear ring are respectively fixed on the outer wall of the side template. The offset gear meshes with the offset gear ring. A linkage frame that is slidably connected to the guide seat is fixed on the inner wall of the U-shaped frame. A plug-in piece that matches the embedding opening on the lower template is fixed at the bottom of the offset gear ring. The lower template is rotatably arranged inside the casting forming layer. The hydraulic cylinder two installed on the top of the casting frame is connected to the upper template.

[0015] The present invention has the following beneficial effects: 1. After the aluminum liquid is transported in the forming mold cavity and the aluminum liquid inlet 2 is misaligned with the aluminum liquid inlet 1, the furnace body cover mechanism is controlled to move to the left along the horizontal guide frame to the set position, so that the top opening of the heat preservation furnace is blocked by the furnace top sealing plate to avoid significant temperature loss. Then, the rotation of the corresponding transmission column is controlled by the motor 2. Under the action of the first transmission wheel and the corresponding transmission belt, the synchronous rotation of each transmission column is realized. Under the cooperation between the closed guide groove and the groove adapter ball, each lifting and scraping component is driven to complete one lifting and lowering. During this process, the aluminum liquid scraper that slides along the inner wall of the riser pipe scrapes the aluminum liquid attached to the inner wall of the riser pipe into the aluminum liquid collection pipe. In this way, the aluminum liquid attached to the inner wall of the riser pipe can be removed, effectively avoiding the problem of reduced casting quality caused by the solidification of aluminum liquid on the inner wall of the riser pipe.

[0016] This invention designs the diameter of the curved surface of each scraper blade to match the outer diameter of the aluminum molten metal scraper. By controlling the synchronous rotation of the two transmission columns, the synchronous rotation of the two linkage rods is achieved. Under the action of the second transmission wheel, the third transmission wheel, and the corresponding transmission belt, the synchronous rotation of each support part is realized. This allows the aluminum molten metal scraper, rising into the area of ​​the curved scraper blade, to scrape away any aluminum molten metal that may be adhering to its circumference as the curved scraper blade scrapes against it. This prevents some aluminum molten metal from re-adhering to the inner wall of the riser pipe and solidifying during the descent of the scraper, thus ensuring the casting quality of the automotive wheel hub.

[0017] In this invention, as the furnace body cover mechanism moves to the left along the horizontal guide frame, the molten aluminum in the riser pipe, having just left the molten aluminum inside the holding furnace, drips onto the inner wall of the riser pipe and into the molten aluminum collection box on the corresponding trajectory. By setting the inclined guide port, it can be ensured that the molten aluminum dripping onto the inclined guide port flows into the molten aluminum collection box for collection. In this way, efficient collection of molten aluminum dripping from each riser pipe during the horizontal movement can be achieved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the low-pressure casting equipment for producing aluminum alloy automotive parts according to the present invention.

[0020] Figure 2 for Figure 1 The front view of the structure.

[0021] Figure 3 This is a cross-sectional view of one state of the low-pressure casting equipment in this invention.

[0022] Figure 4 This is another cross-sectional view of the low-pressure casting equipment in this invention.

[0023] Figure 5 This is a schematic diagram of the casting control mechanism in this invention.

[0024] Figure 6 for Figure 5 A structural sectional view.

[0025] Figure 7 for Figure 6 Enlarged view of the local structure at point A in the middle.

[0026] Figure 8 for Figure 6 Enlarged view of the local structure at point B.

[0027] Figure 9 This is a schematic diagram of the mold mechanism in this invention.

[0028] Figure 10 for Figure 9 A structural sectional view.

[0029] Figure 11 for Figure 10 Enlarged view of the local structure at point C.

[0030] Figure 12 This is a schematic diagram of the furnace body cover mechanism in this invention.

[0031] Figure 13 This is a schematic diagram of the aluminum liquid removal mechanism in this invention.

[0032] Figure 14 This is a schematic diagram of the lifting and scraping assembly in this invention.

[0033] Figure 15 This is a schematic diagram of the scraping control component in this invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1-Casting control mechanism, 101-Casting frame, 102-Casting forming layer, 103-Aluminum liquid conveying layer, 104-Furnace body lifting layer, 105-Horizontal guide frame, 106-Aluminum liquid inlet 1, 107-Vertical guide pipe, 108-Vertical limit seat, 109-Heat insulation base, 110-Hydraulic cylinder 1, 111-Roller channel, 112-Motor 1, 113-Power screw, 114-First mounting bracket, 115-Second mounting bracket Mounting bracket, 116-Motor II, 117-Limiting slide, 118-Vertical guide opening, 119-Axial slide, 120-Support part, 121-Curved scraper, 122-Third transmission wheel, 123-Support frame, 124-Aluminum liquid collection box, 125-Scraping part opening, 126-Drainage angled opening, 2-Mold mechanism, 201-Lower template, 202-Upper template, 203-Side template, 204-Forming cavity, 205-Aluminum Liquid inlet 2, 206-Support base, 207-Cylinder, 208-U-shaped frame, 209-Motor 3, 210-Offset gear, 211-Guide seat, 212-Offset gear ring, 213-Linkage frame, 214-Embedded port, 215-Plug-in component, 216-Hydraulic cylinder 2, 3-Insulation furnace, 4-Furnace body cover mechanism, 401-Furnace body cover, 402-Lifting pipe, 403-Moving frame, 404-Drag-reducing roller, 405-Horizontal 406-Furnace top sealing plate, 407-Gas supply pipe, 408-Aluminum liquid inlet pipe, 5-Aluminum liquid removal mechanism, 6-Lifting scraping assembly, 601-Aluminum liquid scraping component, 602-Aluminum liquid collection pipe, 603-Linkage component, 604-Channel adapter ball, 7-Scraping control assembly, 701-Transmission column, 702-First transmission wheel, 703-Transmission belt, 704-Closed guide groove, 705-Linkage rod, 706-Second transmission wheel. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] For a specific implementation example, please refer to Implementation Example 1. Figure 1-15This invention relates to a low-pressure casting equipment for the production of aluminum alloy automotive parts, comprising a casting control mechanism 1, a mold mechanism 2, a holding furnace 3, a furnace body cover mechanism 4, and an aluminum liquid removal mechanism 5. The casting control mechanism 1 includes a casting frame 101, on the inner side of which, from top to bottom, are arranged a casting forming layer 102, an aluminum liquid conveying layer 103, and a furnace body lifting layer 104. A horizontal guide frame 105 is provided between the aluminum liquid conveying layer 103 and the furnace body lifting layer 104. The 103 are connected by an aluminum liquid inlet 106. The furnace body lifting layer 104 is provided with a vertical drain pipe 107. The mold mechanism 2 is located on the casting forming layer 102 and includes a forming mold cavity 204 composed of a lower mold 201, an upper mold 202 and two side molds 203. The bottom of the lower mold 201 is provided with an aluminum liquid inlet 205 that communicates with the forming mold cavity 204. Under the combined action of the aluminum liquid inlet 106 and the aluminum liquid inlet 205, the aluminum liquid in the holding furnace 3 can be pumped into the forming mold cavity 204.

[0038] The heat preservation furnace 3 is located on the furnace body lifting layer 104 and is coaxially arranged with the mold mechanism 2; the furnace body cover mechanism 4 is located on the aluminum liquid conveying layer 103 and is slidably installed on the horizontal guide frame 105. The furnace body cover mechanism 4 includes a furnace body cover 401. A liquid riser pipe 402 is provided inside the furnace body cover 401, and the lower end of the liquid riser pipe 402 is close to the bottom of the furnace body cover 401; the aluminum liquid removal mechanism 5 is located inside the casting frame 101 and includes a lifting and scraping assembly 6 slidably arranged inside the vertical drain pipe 107. The lifting and scraping assembly 6 includes an aluminum liquid scraper 601. The aluminum liquid scraped by the aluminum liquid scraper 601 is drained and collected by the vertical drain pipe 107.

[0039] In this embodiment of the invention, such as Figure 3 and Figure 5 As shown, two vertical limiting seats 108 are fixed inside the furnace body lifting layer 104. The heat preservation furnace 3 is installed on the heat insulation base 109. A hydraulic cylinder 110 connected to the heat insulation base 109 is installed at the bottom of the casting frame 101. The heat insulation base 109 is slidably set between the two vertical limiting seats 108. Since the heat insulation base 109 is set between the vertical limiting seats 108 on both sides, the stability of the entire heat preservation furnace 3 can be ensured during the lifting and lowering process controlled by the hydraulic cylinder 110. Roller grooves 111 are provided on both inner side walls of the horizontal guide frame 105. The output end of the motor 112 installed on one side of the horizontal guide frame 105 is connected to the power screw 113. The horizontal reciprocating motion of the furnace body cover mechanism 4 on the horizontal guide frame 105 can be realized through the cooperation between the motor 112 and the power screw 113.

[0040] In this embodiment of the invention, such as Figure 2 and Figure 5As shown, a first mounting bracket 114 is fixed to the bottom of the casting frame 101, a second mounting bracket 115 is fixed to the inside of the casting forming layer 102, the vertical guide pipe 107 inside the furnace body lifting layer 104 is fixedly connected to the first mounting bracket 114, a motor 116 is installed on the top of the second mounting bracket 115, two limiting slide grooves 117 are symmetrically opened on the inside of the casting forming layer 102, a vertical guide port 118 connecting the aluminum liquid conveying layer 103 is provided below the second mounting bracket 115, and an axial slide rail 119 is opened on the circumferential side of the vertical guide pipe 107.

[0041] In this embodiment of the invention, such as Figure 12 As shown, the furnace body cover mechanism 4 also includes a movable frame 403 slidably mounted on the horizontal guide frame 105. The furnace body cover 401 is fixedly mounted on the top of the movable frame 403, and its bottom is an open structure (a guide groove is provided at the top inside the aluminum liquid conveying layer 103, and the top of the furnace body cover 401 fits into the guide groove). The movable frame 403 is sleeved on the power screw 113, and the two are threaded together. On opposite sides of the movable frame 403, there are roller grooves 111 that mate with the roller grooves 111. The drag-reducing roller 404 and the movable frame 403 have a horizontal slot 405 on one side. The movable frame 403 has a furnace top sealing plate 406 (removable) that slides with the roller slot 111 on the other side. The furnace body cover 401 has a gas supply pipe 407 installed close to the top on its periphery. The furnace top sealing plate 406 has an aluminum liquid filling pipe 408 installed on its top. A gas supply device can be installed on the furnace top sealing plate 406 through a heat insulation frame. The gas supply device is connected to the gas supply pipe 407 through the gas supply pipe.

[0042] In this embodiment of the invention, such as Figure 14 As shown, the lifting scraping assembly 6 also includes an aluminum liquid collection pipe 602 disposed in the vertical drainage pipe 107. An aluminum liquid scraper 601 is connected to the top of the aluminum liquid collection pipe 602 (it should be noted that the inner wall of the aluminum liquid scraper 601 is a sloping structure to ensure that the scraped aluminum liquid flows into the aluminum liquid collection pipe 602). A linkage 603 that cooperates with the axial slide 119 is fixed on the circumferential side of the aluminum liquid collection pipe 602. The axial slide 119 makes the linkage 603 move only up and down and not rotate. A channel adapter ball 604 is fixedly installed on the linkage 603.

[0043] In this embodiment of the invention, such as Figure 13 and Figure 15As shown, the aluminum liquid cleaning mechanism 5 also includes a scraping control assembly 7; wherein, the scraping control assembly 7 includes a transmission column 701 disposed inside the furnace body lifting layer 104 and rotatably connected to the first mounting frame 114, a first transmission wheel 702 fixedly mounted at the bottom of the transmission column 701, the first transmission wheels 702 being connected to each other by a transmission belt 703 (i.e., both the first transmission wheel 702 and the transmission belt 703 are disposed below the first mounting frame 114), a closed guide groove 704 is provided on the peripheral side of the transmission column 701, and a linkage 603 is slidably sleeved on the transmission column 701. The movable column 701 and the channel adapter ball 604 slide in conjunction with the closed guide groove 704. Specifically, the closed guide groove 704 is a closed channel structure composed of a lower arc groove, an upper inclined groove, an upper arc groove, and a lower inclined groove. Initially, the channel adapter ball 604 is fitted inside the lower arc groove. During the control of the transmission column 701, the channel adapter ball 604 can be driven to slide along the closed guide groove 704 by the constraint and guidance effect of the closed guide groove 704, thereby driving the entire lifting and scraping assembly 6 to move up and down.

[0044] In the initial state, the top opening of the heat preservation furnace 3 is close to the bottom of the moving frame 403 (i.e., the top opening of the heat preservation furnace 3 is in contact with the bottom of the moving frame 403). At this time, under the action of hydraulic cylinder 110, the bottom of the heat insulation base 109 is against the bottom of the furnace body lifting layer 104. Through the combined action of motor 112 and power screw 113, the furnace body cover mechanism 4 is driven to move to the left along the horizontal guide frame 105 to the set position (e.g., Figure 2 As shown), at this time, the furnace cover 401 is exactly coaxial with the vertical guide opening 118, the liquid riser pipe 402 is coaxial with the vertical drain pipe 107, and the furnace top sealing plate 406 slides to the top of the holding furnace 3 to seal its top opening. At this time, the aluminum liquid filling pipe 408 is located above the holding furnace 3. After opening the sealing cover on the aluminum liquid filling pipe 408, a certain amount of aluminum liquid is transported along the aluminum liquid filling pipe 408 into the holding furnace 3. After closing the sealing cover on the aluminum liquid filling pipe 408, the furnace cover mechanism 4 is driven again by the combined action of the motor 112 and the power screw 113 to move to the right along the horizontal guide frame 105 back to the initial position (as shown). Figure 2 As shown), at this time, the furnace cover 401 is aligned concentrically with the heat preservation furnace 3 again. The heat preservation furnace 3 on the heat insulation base 109 is raised to the inside of the furnace cover 401 by the hydraulic cylinder 110, so that the top of the heat insulation base 109 is in close contact with the bottom of the moving frame 403.

[0045] Subsequently, compressed gas is supplied to the furnace body shroud 401 through the gas supply pipe 407 to pressurize the molten aluminum. The pressurized molten aluminum flows into the forming mold cavity 204 through each riser pipe 402, molten aluminum inlet 106, and molten aluminum inlet 205. After the molten aluminum inlet 204 is supplied and the molten aluminum inlet 205 is misaligned with molten aluminum inlet 106, the heat-insulating furnace 3 on the heat-insulating base 109 is lowered back to its initial position by the hydraulic cylinder 110. Then, the furnace body is driven by the combined action of the motor 112 and the power screw 113. The protective cover mechanism 4 moves to the left along the horizontal guide frame 105 to the set position, so that the top opening of the heat preservation furnace 3 is sealed by the furnace top sealing plate 406 to prevent significant temperature loss. Then, the rotation of the corresponding transmission column 701 is controlled by the motor 116. Under the action of the first transmission wheel 702 and the corresponding transmission belt 703, the synchronous rotation of each transmission column 701 is achieved. Under the cooperation between the closed guide groove 704 and the groove adapter ball 604, each lifting and scraping component 6 is driven to complete one lifting and lowering. During this process, it slides along the inner wall of the lifting pipe 402. The aluminum molten scraper 601 scrapes the aluminum molten material adhering to the inner wall of the riser pipe 402 into the aluminum molten material collection pipe 602, and then guides it through the vertical guide pipe 107 to the collection box below it to complete the aluminum molten material collection (the collection box is placed below the vertical guide pipe 107). In this way, the aluminum molten material adhering to the inner wall of the riser pipe 402 is removed. Then, the furnace body cover mechanism 4 is driven by the combined action of the motor 112 and the power screw 113 to move to the right along the horizontal guide frame 105 back to the initial position, that is, the furnace body cover 401 is once again concentrically aligned with the holding furnace 3. Then, the heat-insulating furnace 3 on the heat-insulating base 109 is raised to the inside of the furnace body cover 401 by the hydraulic cylinder 110, so that the top of the heat-insulating base 109 is in close contact with the bottom of the moving frame 403. During the above process, the aluminum liquid in the forming mold cavity 204 can be cooled to achieve forming (the cooling of aluminum liquid in the process of manufacturing automobile wheel hubs is existing technology and will not be described in detail here). After the cast automobile wheel hub is taken out from the mold mechanism 2 and the mold is closed again, the casting production of automobile wheel hubs can be carried out again according to the same control method.

[0046] Specific embodiment two, based on specific embodiment one, such as Figure 6 , Figure 8 and Figure 15As shown, a linkage rod 705 extending to the inner side of the second mounting bracket 115 is fixed to the top of the transmission column 701 (when the control furnace cover mechanism 4 moves to the left along the horizontal guide frame 105 to the set position, the linkage rod 705 is engaged in the corresponding horizontal slot 405, that is, the setting of the horizontal slot 405 ensures that the horizontal movement of the moving frame 403 is not blocked by the linkage rod 705). A second transmission wheel 706 is fixedly installed on the circumferential side of the linkage rod 705. The output end of the motor 116 is connected to the corresponding linkage rod 705. A support part 120 is rotatably arranged at the bottom of the second mounting bracket 115. Several curved scraper blades 121 are arranged in a circumferential array at the bottom of the support part 120. A third transmission wheel 122 fixed on the circumferential side of the support part 120 is connected to the corresponding second transmission wheel 706 by a transmission belt 703. Next, in this embodiment, the diameter of the scraping surface of each curved scraper blade 121 is designed to be consistent with the outer diameter of the aluminum liquid scraper 601. During the synchronous rotation of the two transmission columns 701, the synchronous rotation of the two linkage rods 705 can be driven. Under the action of the second transmission wheel 706, the third transmission wheel 122 and the corresponding transmission belt 703, the synchronous rotation of each support part 120 is realized. In this way, the aluminum liquid scraper 601 that rises into the area of ​​the curved scraper blade 121 can scrape and clean the aluminum liquid that may be attached to the side of the aluminum liquid scraper 601 during the scraping process of the curved scraper blade 121 against the side of the aluminum liquid scraper 601. This can prevent some aluminum liquid from re-attaching to the inner wall of the riser pipe 402 and solidifying again during the descent of the aluminum liquid scraper 601, thereby ensuring the casting quality of the automobile wheel hub.

[0047] In this embodiment of the invention, such as Figure 6 and Figure 7 As shown, two support frames 123 are symmetrically fixed inside the horizontal guide frame 105. An aluminum liquid collection box 124, which is attached to the outer wall of the holding furnace 3, is fixed to the end of each support frame 123. A scraper opening 125, coaxial with the vertical drain pipe 107, is provided at the top of the support frame 123 (initially, the top opening of the aluminum liquid scraper 601 is located inside the vertical drain pipe 107 and close to the scraper opening 125). A diverting oblique opening 126 extending to the periphery of the scraper opening 125 is provided at the top of the aluminum liquid collection box 124. Under control... As the furnace body cover mechanism 4 moves to the left along the horizontal guide frame 105, the molten aluminum in the riser pipe 402, having just left the molten aluminum in the holding furnace 3, drips onto the inner wall of the riser pipe 402 into the molten aluminum collection box 124 on the corresponding trajectory. The inclined guide 126 ensures that the molten aluminum dripping onto the inclined guide 126 flows into the molten aluminum collection box 124 for collection. This achieves efficient collection of molten aluminum dripping from each riser pipe 402 during the horizontal movement.

[0048] Specific embodiment three, based on specific embodiment one, such as Figures 9 to 11As shown, the mold mechanism 2 also includes two symmetrically arranged support seats 206. The output end of the cylinder 207 on the support seat 206 is connected to a U-shaped frame 208 that is slidably connected to the limiting slide groove 117. The output end of the motor 209 on the top of the U-shaped frame 208 is connected to a rotating shaft. A misalignment gear 210 is fixed on the circumferential side of the rotating shaft. An arc-shaped guide seat 211 and a misalignment gear ring 212 are respectively fixed on the outer wall of the side template 203. The misalignment gear 210 meshes with the misalignment gear ring 212. After the aluminum liquid is transported in the forming mold cavity 204, the misalignment gear 210 is driven to rotate by the motor 209 at a certain angle. Under the meshing action of the misalignment gear 210 and the misalignment gear ring 212, the side templates 203 on both sides and the lower... The template 201 rotates synchronously at a certain angle, thereby achieving misalignment between the aluminum liquid inlet 205 and the aluminum liquid inlet 106. Then, the aluminum liquid in the forming cavity 204 can be cooled. The inner wall of the U-shaped frame 208 is fixed with a linkage frame 213 that is slidably connected to the guide seat 211. Through the cooperation between the linkage frame 213 and the guide seat 211, it is ensured that the U-shaped frame 208 can drive the linkage frame 213 and the guide seat 211 to move together. The bottom of the offset toothed ring 212 is fixed with a plug-in part 215 that matches the embedding port 214 on the lower template 201. The lower template 201 is rotatably set inside the casting forming layer 102. The hydraulic cylinder 216 installed on the top of the casting frame 101 is connected to the upper template 202.

[0049] After the casting of the car wheel hub is completed, the upper mold plate 202 is first moved upward and reset by hydraulic cylinder 216. Then, the offset gear 210 is driven to rotate in the opposite direction by motors 209 on both sides to complete the reset, so that the side mold plates 203 on both sides rotate in the opposite direction to return to the initial position. Then, the side mold plates 203 are moved away from each other and returned to the initial position by cylinders 207 on both sides. At this time, the cast car wheel hub can be removed from the lower mold plate 201 (i.e. demolding). After demolding, the side mold plates 203 are moved closer together by cylinders 207 on both sides to complete the initial mold closing. Then, the upper mold plate 202 is moved downward to the set position by hydraulic cylinder 216 to complete the final mold closing. At this time, aluminum liquid inlet 205 and aluminum liquid inlet 106 are concentrically connected. After the mold closing is completed, the casting of the car wheel hub can be carried out again.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-pressure casting equipment for the production of aluminum alloy automotive parts, characterized in that, include: The casting control mechanism (1) includes a casting frame (101). The casting frame (101) is provided with a casting forming layer (102), an aluminum liquid conveying layer (103), and a furnace body lifting layer (104) arranged from top to bottom on the inner side of the casting frame (101). A horizontal guide frame (105) is provided between the aluminum liquid conveying layer (103) and the furnace body lifting layer (104). The casting forming layer (102) and the aluminum liquid conveying layer (103) are connected through an aluminum liquid inlet (106). The furnace body lifting layer (104) is provided with a vertical drain pipe (107). The mold mechanism (2) is provided on the casting forming layer (102). The mold mechanism (2) includes a forming cavity (204) composed of a lower template (201), an upper template (202) and two side templates (203). The bottom of the lower template (201) is provided with an aluminum liquid inlet (205) that communicates with the forming cavity (204). The heat preservation furnace (3) is set on the furnace body lifting layer (104), and the heat preservation furnace (3) is coaxially arranged with the mold mechanism (2); A furnace body cover mechanism (4) is provided on the aluminum liquid conveying layer (103). The furnace body cover mechanism (4) is slidably installed on the horizontal guide frame (105). The furnace body cover mechanism (4) includes a furnace body cover (401). A liquid riser pipe (402) penetrating the top of the furnace body cover (401) is provided inside the furnace body cover (401). An aluminum liquid removal mechanism (5) is provided inside the casting frame (101). The aluminum liquid removal mechanism (5) includes a lifting scraping assembly (6) that is slidably provided inside the vertical drain pipe (107). The lifting scraping assembly (6) includes an aluminum liquid scraper (601). The aluminum liquid scraped by the aluminum liquid scraper (601) is drained and collected by the vertical drain pipe (107). The casting frame (101) is fixed with a first mounting bracket (114) at the bottom, and a second mounting bracket (115) is fixed on the inner side of the casting forming layer (102). The vertical drain pipe (107) on the inner side of the furnace body lifting layer (104) is fixedly connected to the first mounting bracket (114). The second mounting bracket (115) is equipped with a motor (116) at the top. The casting forming layer (102) is symmetrically provided with two limiting grooves (117). The second mounting bracket (115) is provided with a vertical guide port (118) connecting the aluminum liquid conveying layer (103) below it. The vertical drain pipe (107) is provided with an axial slide (119) on its circumferential side. The lifting scraping assembly (6) also includes an aluminum liquid collection pipe (602) disposed in a vertical drainage pipe (107), the aluminum liquid scraping component (601) is connected to the top of the aluminum liquid collection pipe (602), and a linkage component (603) that cooperates with the axial slide (119) is fixed on the peripheral side of the aluminum liquid collection pipe (602), and a channel adapter ball (604) is fixedly installed on the linkage component (603). The aluminum liquid removal mechanism (5) further includes a scraping control component (7); wherein the scraping control component (7) includes a transmission column (701) disposed inside the furnace body lifting layer (104) and rotatably connected to the first mounting bracket (114), a first transmission wheel (702) is fixedly installed at the bottom of the transmission column (701), the first transmission wheels (702) are connected to each other by a transmission belt (703), a closed guide groove (704) is opened on the periphery of the transmission column (701), the linkage (603) is slidably sleeved on the transmission column (701) and the groove adapter ball (604) slides in cooperation with the closed guide groove (704).

2. The low-pressure casting equipment for producing aluminum alloy automotive parts according to claim 1, characterized in that, Two vertical limiting seats (108) are fixed inside the furnace body lifting layer (104). The heat preservation furnace (3) is installed on the heat insulation base (109). A hydraulic cylinder (110) connected to the heat insulation base (109) is installed at the bottom of the casting frame (101). The heat insulation base (109) is slidably arranged between the two vertical limiting seats (108). Roller grooves (111) are provided on both inner side walls of the horizontal guide frame (105). A motor (112) installed on one side of the horizontal guide frame (105) is connected to a power screw (113) at its output end.

3. The low-pressure casting equipment for producing aluminum alloy automotive parts according to claim 2, characterized in that, The furnace body cover mechanism (4) also includes a movable frame (403) that is slidably mounted on a horizontal guide frame (105). The furnace body cover (401) is fixedly mounted on the top of the movable frame (403) and its bottom is an open structure. The movable frame (403) is sleeved on a power screw (113) and the two are threaded together. The movable frame (403) is equipped with drag-reducing rollers (404) that cooperate with roller grooves (111) on both sides. A horizontal slot (405) is opened on one side of the movable frame (403). A furnace top sealing plate (406) that is slidably cooperates with roller grooves (111) is fixed on the other side of the movable frame (403). A gas supply pipe (407) is installed on the periphery of the furnace body cover (401) close to the top. An aluminum liquid filling pipe (408) is installed on the top of the furnace top sealing plate (406).

4. The low-pressure casting equipment for producing aluminum alloy automotive parts according to claim 3, characterized in that, The top of the transmission column (701) is fixed with a linkage rod (705) extending to the inner side of the second mounting bracket (115). A second transmission wheel (706) is fixedly installed on the periphery of the linkage rod (705). The output end of the second motor (116) is connected to the corresponding linkage rod (705). A support part (120) is rotatably provided at the bottom of the second mounting bracket (115). Several curved scraper blades (121) are arranged in a circumferential array at the bottom of the support part (120). The third transmission wheel (122) fixed on the periphery of the support part (120) is connected to the corresponding second transmission wheel (706) through a transmission belt (703).

5. The low-pressure casting equipment for producing aluminum alloy automotive parts according to claim 4, characterized in that, Two support frames (123) are symmetrically fixed on the inner side of the horizontal guide frame (105). An aluminum liquid collection box (124) that fits against the outer wall of the heat preservation furnace (3) is fixed at the end of the support frame (123). A scraping part opening (125) coaxial with the vertical drain pipe (107) is opened at the top of the support frame (123). A diversion oblique opening (126) extending to the periphery of the scraping part opening (125) is opened at the top of the aluminum liquid collection box (124).

6. A low-pressure casting equipment for producing aluminum alloy automotive parts according to claim 5, characterized in that, The mold mechanism (2) also includes two symmetrically arranged support seats (206). The output end of the cylinder (207) on the support seat (206) is connected to a U-shaped frame (208) that is slidably connected to the limiting slide groove (117). The output end of the motor three (209) at the top of the U-shaped frame (208) is connected to a rotating shaft. An offset gear (210) is fixed on the circumferential side of the rotating shaft. An arc-shaped guide seat (211) and an offset gear ring (212) are respectively fixed on the outer wall of the side template (203). The offset gear ring (210) is... The gear (210) meshes with the offset gear ring (212). The inner wall of the U-shaped frame (208) is fixed with a linkage frame (213) that is slidably connected to the guide seat (211). The bottom of the offset gear ring (212) is fixed with a plug-in (215) that is compatible with the embedding port (214) on the lower template (201). The lower template (201) is rotatably set inside the casting forming layer (102). The hydraulic cylinder two (216) installed on the top of the casting frame (101) is connected to the upper template (202).

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