Rotary multi-station aluminum alloy part low-pressure casting equipment

Abstract

The invention discloses rotary multi-station aluminum alloy part low-pressure casting equipment, and relates to the technical field of metal casting, the rotary multi-station aluminum alloy part low-pressure casting equipment comprises a melting low-pressure unit comprising a base and a low-pressure melting furnace arranged on the base, and a casting unit comprising an upper die assembly arranged at the top of the base and a lower die assembly arranged at the other end of the upper die assembly, and the lower die assembly is connected with the low-pressure melting furnace. Through cooperation of the upper die assembly and the lower die assembly with the low-pressure melting furnace, full-automatic operation of die closing, material heating, conveying and cooling forming is achieved, the production efficiency is greatly improved, the labor intensity is reduced, the consistency and quality of threaded pipes are ensured through accurately-controlled die closing and material conveying, and the production efficiency is improved. And defects and crack risks in production are reduced, the product and the mold are protected in the demolding process, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, and in particular to a rotary multi-station low-pressure casting device for aluminum alloy parts. Background Art

[0002] Metal casting is a process of melting metal into a hot melt liquid that meets certain requirements and then injecting it into a mold to obtain a casting that meets the required performance, size and shape. Low-pressure casting is one of the metal casting methods. At the same time, the manufacture of threaded pipes usually adopts low-pressure casting or injection molding methods. The threaded pipes manufactured by low-pressure casting are widely recognized by users because of their high product density and longer service life.

[0003] At present, the threaded tubes produced by low-pressure casting in the market are generally pushed out manually or using a mold core rod during demoulding. During the demoulding process, the threaded tube is firmly fixed on the mold due to the thread shape of the threaded tube itself. During the demoulding process, the threaded tube and the mold are easily damaged due to friction, which affects the quality of the product and causes cracks in the produced threaded tube, resulting in the problem that the tube cannot be used. Summary of the invention

[0004] In view of the above-mentioned problems existing in the existing rotary multi-station aluminum alloy low-pressure casting equipment, the present invention is proposed.

[0005] Therefore, the present invention provides a rotating multi-station low-pressure casting equipment for aluminum alloy parts, the purpose of which is to solve the problem that the threaded pipe and the mold are easily damaged due to friction during the demoulding process, affecting the quality of the product, thereby causing cracks in the produced threaded pipe and making it unusable.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a low-pressure melting unit, comprising a base, and a low-pressure melting furnace arranged on the base; The casting unit comprises an upper mold assembly arranged on the top of the base, and a lower mold assembly arranged on the other end of the upper mold assembly, and the lower mold assembly is connected to the low-pressure melting furnace.

[0007] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the upper mold assembly includes a top plate arranged on the top of the base, an extrusion driving member arranged on one side of the top plate, a moving member arranged on the other side of the top plate, a moving plate arranged on the other side of the moving member, a buffer member arranged on the other side of the moving plate, a pressure plate arranged on one side of the buffer member, and a reverse mold member slidably arranged inside the moving member, and the reverse mold member passes through the moving member and the moving plate and is slidably connected to the pressure plate.

[0008] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the extrusion driving component includes a hydraulic cylinder arranged on one side of the top plate, a moving rod arranged at the output end of the hydraulic cylinder, a sliding component 1 slidably arranged inside the moving rod, and a gear 1 arranged on the sliding component 1, and the gear 1 slides inside the moving component.

[0009] As a preferred solution of the rotary multi-station aluminum alloy low-pressure casting equipment of the present invention, a thread groove is arranged inside the top plate, and the thread groove is threadedly connected to the reverse mold part.

[0010] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the reverse mold part includes a threaded tube mold body arranged inside the moving part, a threaded part 1 arranged on one side of the threaded tube mold body, a threaded part 2 arranged at the other end of the threaded part 1, and a gear 2 arranged on the outer diameter of the threaded tube mold body, and the gear 2 is threadedly connected to the gear 1.

[0011] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the buffer part includes a buffer rod arranged on one side of the movable plate, a return spring arranged at the other end of the buffer rod, and a buffer block arranged at the other end of the return spring, and the buffer block is connected to the pressure plate.

[0012] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the lower mold assembly includes a bottom plate arranged on the base, a fixed plate arranged on one side of the bottom plate, an L-shaped support plate 1 arranged at the other end of the fixed plate, an L-shaped support plate 2 arranged at the other end of the L-shaped support plate 1, a demolding piece arranged on one side of the L-shaped support plate 2, a unloading piece arranged on the demolding piece, and a loading piece arranged inside the bottom plate, and the loading piece is connected to the low-pressure melting furnace.

[0013] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the ejection mold part includes a lower mold part arranged on the second L-shaped support plate, a casting groove arranged inside the lower mold part, and a positioning part arranged on the lower mold part, and the positioning part passes through the discharge part and is slidably connected to the pressure plate.

[0014] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the loading part includes a protective shell arranged inside the bottom plate, a material guide pipe arranged inside the protective shell, a conveying pipe arranged on the material guide pipe, and an injection part arranged on the conveying pipe, and the injection part passes through the second L-shaped support plate and cooperates with the casting groove.

[0015] As a preferred solution of the rotating multi-station aluminum alloy low-pressure casting equipment described in the present invention, the blanking part includes a connecting block arranged on the lower mold part, a sliding rod arranged on the connecting block, a sliding part 2 slidably arranged inside the sliding rod, and a blanking plate arranged at the other end of the sliding part 2, and the blanking plate cooperates with the pressure plate.

[0016] The beneficial effects of the present invention are as follows: through the cooperation of the upper mold assembly and the lower mold assembly with the low-pressure melting furnace, fully automated operations of mold closing, material heating, conveying and cooling molding are achieved, which greatly improves production efficiency and reduces labor intensity; precisely controlled mold closing and material conveying ensure the consistency and quality of the threaded pipe, reduces the risk of defects and cracks in production, and protects the product and mold during demolding, extending the service life of the mold; the heating and cooling process precisely controlled by inert gas not only reduces environmental pollution, but also avoids damage to the threaded pipe and mold due to friction during demolding, thereby enhancing the casting process of cast aluminum alloy threaded pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the rotary multi-station aluminum alloy low-pressure casting equipment of the present invention.

[0019] Figure 2 It is a side structural schematic diagram of the rotary multi-station aluminum alloy low-pressure casting equipment of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the rotary multi-station aluminum alloy low-pressure casting equipment of the present invention.

[0021] Figure 4 The invention provides a rotary multi-station aluminum alloy low-pressure casting device. Figure 3 An enlarged schematic diagram of point A.

[0022] Figure 5 It is a schematic diagram of the top cross-sectional structure of the rotary multi-station aluminum alloy low-pressure casting equipment of the present invention.

[0023] Figure 6 The invention provides a rotary multi-station aluminum alloy low-pressure casting device. Figure 5 An enlarged schematic diagram of point B.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the upper mold of the rotary multi-station aluminum alloy part low-pressure casting equipment of the present invention.

[0025] Figure 8 The invention provides a rotary multi-station aluminum alloy low-pressure casting device. Figure 7 Enlarged schematic diagram of point C.

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the lower mold of the rotary multi-station aluminum alloy part low-pressure casting equipment of the present invention.

[0027] Fig.10 It is a schematic diagram of the overall cross-sectional structure of the rotary multi-station aluminum alloy low-pressure casting equipment of the present invention.

[0028] Description of reference numerals: 1. low-pressure melting unit; 11. base; 12. low-pressure melting furnace; 2. casting unit; 21. upper mold assembly; 211. extrusion drive member; 2111. hydraulic cylinder; 2112. moving rod; 2113. sliding member 1; 2114. gear 1; 212. top plate; 2121. threaded groove; 213. moving member; 214. moving plate; 215. reverse mold member; 2151. threaded pipe mold body; 2152. gear 2; 2153. threaded member 1; 2154. threaded member 2; 216. buffer member; 2161. buffer rod; 21 62. reset spring; 2163. buffer block; 217. pressure plate; 22. lower mold assembly; 221. bottom plate; 222. fixing plate; 223. L-shaped support plate one; 224. L-shaped support plate two; 225. ejector; 2251. lower mold; 2252. casting trough; 2253. positioning piece; 226. unloading piece; 2261. connecting block; 2262. sliding rod; 2263. sliding piece two; 2264. unloading plate; 227. loading piece; 2271. protective shell; 2272. guide pipe; 2273. conveying pipe; 2274. injection piece. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1 - Figure 3 , which is the first embodiment of the present invention, provides a rotating multi-station low-pressure casting equipment for aluminum alloy parts, and the device includes: a melting low-pressure unit 1, and a casting unit 2.

[0031] The low-pressure melting unit 1 includes a base 11 and a low-pressure melting furnace 12 disposed on the base 11. Before casting the threaded pipe, aluminum alloy material is added to the low-pressure melting furnace 12, and then the low-pressure melting furnace 12 starts to heat and melt the aluminum alloy material inside. The inert gas of the melted aluminum alloy material is squeezed from the inside of the low-pressure melting furnace 12 into the lower mold assembly 22, and is transported to the inside of the mold by the lower mold assembly 22 to start casting the aluminum alloy threaded pipe. The casting unit 2 includes an upper mold assembly 21 disposed on the top of the base 11, and a lower mold assembly 22 disposed at the other end of the upper mold assembly 21, and the lower mold assembly 22 is connected to the low-pressure melting furnace 12. When casting the aluminum alloy threaded pipe, the upper mold assembly 21 starts to move to the right to close the lower mold assembly 22, and during the movement of the upper mold assembly 21, the reverse mold member 215 inside the upper mold assembly 21 is inserted into the inside of the output mold member 225 to complete the closing operation of the threaded pipe mold, and at the same time, the buffer member 216 is used to close the upper mold assembly 21 and the lower mold assembly 22 in the closing operation. During the process, auxiliary buffering is performed, and after the upper mold assembly 21 and the lower mold assembly 22 are molded, the aluminum alloy material inside the low-pressure melting furnace 12 is also melted, and then the low-pressure melting furnace 12 is connected to an inert gas, so that the inert gas is squeezed into the interior of the low-pressure melting furnace 12, and all the aluminum alloy materials melted inside the low-pressure melting furnace 12 are squeezed to one side, so that the material is squeezed into the interior of the feeder 227, and is transported to the interior of the ejection mold 225 through the feeder 227, and the ejection mold 225 and the reverse mold 215 cooperate to start the ejection mold. The aluminum alloy material inside the mold 225 is formed, and after the forming is completed, it is cooled. After the cooling and forming are completed, the upper mold assembly 21 moves in the original direction and starts to demould. During the movement of the upper mold assembly 21, the extrusion of the buffer 216 is released, so that the buffer 216 is released, and the pressing plate 217 pushes the threaded pipe body formed on the outer diameter of the reverse mold 215, so that the formed threaded pipe is initially limited, and during the movement of the upper mold assembly 21, the extrusion drive member 211 starts to rotate in the opposite direction with the reverse mold 215 , so that the threaded tube on the outer diameter of the reverse mold part 215 is rotated to remove the material, and the blanking part 226 also moves during the movement of the upper mold assembly 21. After the blanking part 226 extends to the specified position, the blanking plate 2264 on the blanking part 226 begins to hang out the threaded tube formed on the outer diameter of the reverse mold part 215, and with the cooperation of the extrusion drive part 211, the threaded tube on the outer diameter of the reverse mold part 215 is hung out while rotating, ensuring that the threaded tube is automatically unloaded when the upper mold assembly 21 returns to its original position, and ensuring that the threaded tube will not be damaged during the unloading process.

[0032] During use, when casting the aluminum alloy threaded pipe, the upper mold assembly 21 starts to move to the right to close the lower mold assembly 22, and during the movement of the upper mold assembly 21, the reverse mold part 215 inside the upper mold assembly 21 is inserted into the inside of the mold part 225 to complete the closing operation of the threaded pipe mold, and the buffer part 216 assists in buffering the upper mold assembly 21 and the lower mold assembly 22 during the closing process, and after the upper mold assembly 21 and the lower mold assembly 22 are closed, the aluminum alloy material inside the low-pressure melting furnace 12 is The material is also melted, and then the low-pressure melting furnace 12 is connected to an inert gas, so that the inert gas can be squeezed into the interior of the low-pressure melting furnace 12, and all the melted aluminum alloy material in the low-pressure melting furnace 12 is squeezed to one side, so that the material is squeezed into the interior of the loading part 227, and is transported to the interior of the ejection mold 225 through the loading part 227. Through the cooperation of the ejection mold 225 and the reverse mold 215, the aluminum alloy material entering the ejection mold 225 is started to be molded, and after the molding is completed, it is cooled.

[0033] After the cooling and molding is completed, the upper mold assembly 21 moves in the original direction and starts demoulding. During the movement of the upper mold assembly 21, the extrusion of the buffer 216 is released, so that the buffer 216 releases the extrusion and pushes the pressing plate 217 to push the threaded tube body formed on the outer diameter of the reverse mold 215, so that the formed threaded tube is initially limited, and during the movement of the upper mold assembly 21, the extrusion drive member 211 starts to rotate in the reverse direction with the reverse mold 215, so that the threaded tube on the outer diameter of the reverse mold 215 is rotated and demolded, and the material is unloaded during the movement of the upper mold assembly 21 Part 226 also moves. After the blanking part 226 extends to the specified position, the blanking plate 2264 on the blanking part 226 begins to push the threaded tube formed on the outer diameter of the reverse mold part 215, and with the cooperation of the extrusion drive part 211, the threaded tube on the outer diameter of the reverse mold part 215 is rotated and pushed, ensuring that the threaded tube is automatically blanked when the upper mold assembly 21 returns to its original position, and ensuring that the threaded tube will not be damaged during the blanking process, reducing the risk of defects and cracks in production, protecting the product and the mold during demolding, and extending the service life of the mold.

[0034] Example 2, reference Figure 1 - Figure 8, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that the upper mold assembly 21 includes a top plate 212 arranged on the top of the base 11, an extrusion driving member 211 arranged on one side of the top plate 212, a moving member 213 arranged on the other side of the top plate 212, a moving plate 214 arranged on the other side of the moving member 213, a buffer member 216 arranged on the other side of the moving plate 214, a pressing plate 217 arranged on one side of the buffer member 216, and a reverse mold member 215 slidably arranged inside the moving member 213, and the reverse mold The member 215 penetrates the moving member 213 and the moving plate 214 and is slidably connected with the pressing plate 217, and the extrusion driving member 211 includes a hydraulic cylinder 2111 arranged on one side of the top plate 212, a moving rod 2112 arranged at the output end of the hydraulic cylinder 2111, a sliding member 2113 slidably arranged inside the moving rod 2112, and a gear 2114 arranged on the sliding member 2113, and the gear 2114 slides inside the moving member 213. Before the threaded pipe is cast, the extrusion driving member 211 starts to work, so that The moving member 213 starts to move with the moving plate 214 toward the lower mold assembly 22 to close the mold. During the movement of the moving plate 214, the buffer member 216 and the pressing plate 217 also move together. At the same time, the hydraulic cylinder 2111 at the output end of the extrusion drive member 211 also moves. During the movement of the hydraulic cylinder 2111, the moving rod 2112 also causes the internal sliding member 1 2113 to rotate with the gear 1 2114. During the rotation of the gear 1 2114, the gear 2 2152 also starts to rotate to close the threaded tube mold. The tool body 2151 and the threaded part 2153 also rotate together and when the pressure plate 217 fits the lower mold assembly 22, the threaded part 2153 is also inserted into the inside of the casting groove 2252 to complete the mold closing. In the process of the pressure plate 217 fitting the ejection mold part 225, the buffer part 216 buffers the pressure plate 217, and also squeezes the lower material part 226 to move to the inside of the ejection mold part 225, seals the mold closing of the pressure plate 217 and the ejection mold part 225, and starts to complete the pre-treatment of the injection casting to ensure the subsequent casting process.

[0035] Compared with Example 1, further, a thread groove 2121 is provided inside the top plate 212, and the thread groove 2121 is threadedly connected to the reverse mold part 215, and the reverse mold part 215 includes a threaded tube mold body 2151 arranged inside the moving part 213, a threaded part 1 2153 arranged on one side of the threaded tube mold body 2151, a threaded part 2154 arranged at the other end of the threaded part 1 2153, and a gear 2152 arranged on the outer diameter of the threaded tube mold body 2151, and the gear 2152 is threadedly connected to the gear 1 2114, and the buffer part 216 includes a buffer rod 2161 arranged on one side of the moving plate 214, a return spring 2162 arranged at the other end of the buffer rod 2161, and a buffer block 2163 arranged at the other end of the return spring 2162, and the buffer block 2163 is connected to the pressing plate 217, and the pressing plate 217 is attached to the outlet. The surface of the mold 225, after the reverse mold 215 is inserted into the interior of the mold 225, the mold closing process is completed, and the aluminum alloy material inside the low-pressure melting furnace 12 is also melted. The melted aluminum alloy material squeezes the material inside the low-pressure melting furnace 12 into the loading piece 227 inside the bottom plate 221 through the connected inert gas, and is transported to the inside of the conveying pipe 2273 through the guide pipe 2272, and is transported to the inside of the injection piece 2274 through the conveying pipe 2273, and the material is squeezed into the inside of the casting groove 2252 through the injection piece 2274. Under the cooperation of the threaded part 2153 inside the casting groove 2252, the aluminum alloy material entering is formed, and the aluminum alloy material inside the casting groove 2252 is cooled after being formed to complete the casting, so that the threaded pipe manufactured by low-pressure casting has a higher service life due to its high product density.

[0036] During use, before casting the threaded tube, the extrusion drive 211 starts to work, so that the moving part 213 starts to move with the moving plate 214 to the direction of the lower mold assembly 22 for mold closing. During the movement of the moving plate 214, the buffer 216 and the pressing plate 217 also move together. At the same time, the hydraulic cylinder 2111 at the output end of the extrusion drive 211 also moves. During the movement of the hydraulic cylinder 2111, the moving rod 2112 also causes the internal sliding part 1 2113 to rotate with the gear 1 2114. During the rotation of the gear 1 2114, the gear 2152 also starts to rotate, so that the threaded tube mold body 2151 and the threaded part 1 2153 also rotate together. When the pressing plate 217 fits the lower mold assembly 22, the threaded part 1 2153 is also inserted into the casting groove 2252 to complete the mold closing. In the process of the pressing plate 217 fitting the mold part 225, the buffer 216 buffers the pressing plate 217, and also causes the blanking part 226 to be squeezed and moved to The inside of the mold 225 is sealed to seal the mold of the pressure plate 217 and the mold 225, and the pre-treatment of the injection casting is completed to ensure that in the subsequent casting process, after the pressure plate 217 is attached to the surface of the mold 225 and the reverse mold 215 is inserted into the inside of the mold 225, the mold closing process is completed, and at the same time, the aluminum alloy material inside the low-pressure melting furnace 12 is also melted, and the melted aluminum alloy material squeezes the material inside the low-pressure melting furnace 12 to the upper surface of the bottom plate 221 through the connected inert gas. The material is in the material part 227, and is transported to the inside of the delivery pipe 2273 along the guide pipe 2272, and is transported to the inside of the injection part 2274 through the delivery pipe 2273, and all the material is squeezed into the inside of the casting groove 2252 through the injection part 2274, and the aluminum alloy material entering is formed with the cooperation of the threaded part 2153 inside the casting groove 2252, and the aluminum alloy material inside the casting groove 2252 is cooled after being formed to ensure the forming casting of the aluminum alloy threaded pipe.

[0037] The remaining structures are the same as those of Example 1.

[0038] Example 3, reference Figure 1 - Fig.10, which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the lower mold assembly 22 includes a bottom plate 221 arranged on 11, a fixed plate 222 arranged on one side of the bottom plate 221, an L-shaped support plate 1 223 arranged at the other end of the fixed plate 222, an L-shaped support plate 224 arranged at the other end of the L-shaped support plate 1 223, a demolding member 225 arranged on one side of the L-shaped support plate 224, a lowering member 226 arranged on the demolding member 225, and a loading member 227 arranged inside the bottom plate 221, and the loading member 227 is connected to the low-pressure melting furnace 12, the demolding member 225 includes a lower mold 2251 arranged on the L-shaped support plate 224, a casting groove 2252 arranged inside the lower mold 2251, and a positioning member 2253 arranged on the lower mold 2251, and The positioning member 2253 passes through the blanking member 226 and is slidably connected with the pressure plate 217. After the casting of the inverted mold 215 and the ejection mold 225 is completed, the hydraulic cylinder 2111 starts to drive the moving rod 2112 to carry the pressure plate 217 and the inverted mold 215 away from the surface of the ejection mold 225 and move to the original position. In the process of the moving rod 2112 carrying the pressure plate 217 away from the ejection mold 225, the formed threaded tube is also moved out from the inside of the casting groove 2252 along with the movement of the threaded member 2153, and fits on the outer diameter of the inverted mold 215. As the pressure plate 217 is separated from the surface of the inverted mold 215, the squeezed buffer member 216 is also released from the squeeze and moves in the opposite direction, initially pushing the threaded tube on the outer diameter of the inverted mold 215, and performing preliminary processing on the subsequent automatic blanking of the threaded tube to ensure the smoothness of the threaded tube blanking.

[0039] Compared with the second embodiment, the feeding member 227 further comprises a protective shell 2271 disposed inside the bottom plate 221, a guide tube 2272 disposed inside the protective shell 2271, a delivery tube 2273 disposed on the guide tube 2272, and an injection member 2274 disposed on the delivery tube 2273, and the injection member 2274 penetrates the L-shaped support plate 224 and cooperates with the casting groove 2252, and the feeding member 226 comprises a connecting block 2261 disposed on the lower mold 2251, a The sliding rod 2262 is placed on the connecting block 2261, the sliding part 2263 is slidably arranged inside the sliding rod 2262, and the blanking plate 2264 is arranged at the other end of the sliding part 2263, and the blanking plate 2264 cooperates with the pressing plate 217. When the reverse mold 215 moves with the moving rod 2112, the sliding part 1 2113 inside the gear 1 2114 rotates along the thread groove of the outer diameter of the moving rod 2112. When the gear 1 2114 rotates, the gears 2 on both sides rotate. 2152 also causes the mold part 215 to rotate as a whole, thereby causing the threaded tube on the outer diameter of the threaded part 1 2153 to rotate in the opposite direction, so that the threaded tube moves while rotating. During the movement of the pressure plate 217, the blanking part 226 also moves, and the blanking plate 2264 slides inside the sliding rod 2262. After the blanking plate 2264 is moved to the limit by the pressure plate 217, the pressure plate 217 continues to move, and the blanking plate 2264 stops moving and assists in squeezing the threaded tube on the outer diameter of the gear 2152, so that the threaded tube on the outer diameter of the gear 2152 can be squeezed while rotating, so that the threaded tube on the outer diameter of the gear 2152 can be automatically detached, thereby completing automatic unloading, and the reverse rotating threaded part 1 2153 can make the threaded tube on the outer diameter fall off from the inside, and with the cooperation of the blanking plate 2264, the formed threaded tube is squeezed, so that the threaded tube can be completely detached to the greatest extent and avoid damage when the threaded tube is unloaded.

[0040] During use, after the reverse mold 215 and the ejection mold 225 are cast, the hydraulic cylinder 2111 starts to drive the moving rod 2112 to bring the pressure plate 217 and the reverse mold 215 away from the surface of the ejection mold 225 and move to the original position. In the process of the moving rod 2112 bringing the pressure plate 217 away from the ejection mold 225, the formed threaded pipe is also moved out from the inside of the casting groove 2252 along with the movement of the threaded member 2153, and fits on the outer diameter of the reverse mold 215. As the pressure plate 217 is separated from the surface of the reverse mold 215, the squeezed buffer 216 is also released from the squeeze and moves in the opposite direction, preliminarily pushing the threaded pipe on the outer diameter of the reverse mold 215, and preliminarily processing the subsequent automatic unloading of the threaded pipe. , ensuring the smoothness of threaded tube unloading, and after the unloading plate 2264 is moved to the limit by the pressure plate 217, the pressure plate 217 continues to move, and the unloading plate 2264 stops moving and assists in extruding the threaded tube on the outer diameter of the gear 2152, so that the threaded tube on the outer diameter of the gear 2152 can be extruded while rotating, so that the threaded tube on the outer diameter of the gear 2152 can be automatically detached, thereby completing automatic unloading, and the threaded tube on the outer diameter can be made to fall off from the inside through the reverse rotating threaded part 1 2153, and the formed threaded tube is extruded with the cooperation of the unloading plate 2264, so that the threaded tube can be detached to the greatest extent and avoid damage when the threaded tube is unloaded.

[0041] The remaining structure is the same as that of Example 2.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A rotary multi-station low-pressure casting equipment for aluminum alloy parts, characterized in that: include: A low-pressure melting unit (1) comprising a base (11) and a low-pressure melting furnace (12) arranged on the base (11); The casting unit (2) comprises an upper mold assembly (21) arranged on the top of the base (11), and a lower mold assembly (22) arranged at the other end of the upper mold assembly (21), and the lower mold assembly (22) is connected to the low-pressure melting furnace (12).

2. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 1 is characterized in that: The upper mold assembly (21) comprises a top plate (212) arranged on the top of the base (11), an extrusion driving member (211) arranged on one side of the top plate (212), a moving member (213) arranged on the other side of the top plate (212), a moving plate (214) arranged on the other side of the moving member (213), a buffer member (216) arranged on the other side of the moving plate (214), a pressing plate (217) arranged on one side of the buffer member (216), and a reverse mold member (215) slidably arranged inside the moving member (213), wherein the reverse mold member (215) penetrates the moving member (213) and the moving plate (214) and is slidably connected to the pressing plate (217).

3. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 2 is characterized in that: The extrusion drive member (211) comprises a hydraulic cylinder (2111) arranged on one side of the top plate (212), a moving rod (2112) arranged at the output end of the hydraulic cylinder (2111), a sliding member (2113) slidably arranged inside the moving rod (2112), and a gear (2114) arranged on the sliding member (2113), and the gear (2114) slides inside the moving member (213).

4. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 3 is characterized in that: A thread groove (2121) is provided inside the top plate (212), and the thread groove (2121) is threadably connected to the reverse mold part (215).

5. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 4 is characterized in that: The reverse mold part (215) comprises a threaded tube mold body (2151) arranged inside the movable part (213), a threaded part 1 (2153) arranged on one side of the threaded tube mold body (2151), a threaded part 2 (2154) arranged on the other end of the threaded part 1 (2153), and a gear 2 (2152) arranged on the outer diameter of the threaded tube mold body (2151), wherein the gear 2 (2152) is threadedly connected to the gear 1 (2114).

6. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 5, characterized in that: The buffer member (216) comprises a buffer rod (2161) arranged on one side of the movable plate (214), a return spring (2162) arranged at the other end of the buffer rod (2161), and a buffer block (2163) arranged at the other end of the return spring (2162), and the buffer block (2163) is connected to the pressure plate (217).

7. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 6 is characterized in that: The lower mold assembly (22) comprises a bottom plate (221) arranged on the base (11), a fixed plate (222) arranged on one side of the bottom plate (221), an L-shaped support plate 1 (223) arranged at the other end of the fixed plate (222), an L-shaped support plate 2 (224) arranged at the other end of the L-shaped support plate 1 (223), an ejection piece (225) arranged on one side of the L-shaped support plate 2 (224), a material discharge piece (226) arranged on the ejection piece (225), and a material loading piece (227) arranged inside the bottom plate (221), wherein the material loading piece (227) is connected to the low-pressure melting furnace (12).

8. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 7 is characterized in that: The ejection mold part (225) comprises a lower mold part (2251) arranged on the second L-shaped support plate (224), a casting groove (2252) arranged inside the lower mold part (2251), and a positioning part (2253) arranged on the lower mold part (2251), and the positioning part (2253) passes through the discharge part (226) and is slidably connected to the pressing plate (217).

9. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 8, characterized in that: The loading member (227) comprises a protective shell (2271) arranged inside the bottom plate (221), a material guide tube (2272) arranged inside the protective shell (2271), a delivery tube (2273) arranged on the material guide tube (2272), and an injection member (2274) arranged on the delivery tube (2273), and the injection member (2274) passes through the second L-shaped support plate (224) and cooperates with the casting groove (2252).

10. The rotary multi-station aluminum alloy low-pressure casting equipment according to claim 9, characterized in that: The blanking member (226) includes a connecting block (2261) arranged on the lower mold member (2251), a sliding rod (2262) arranged on the connecting block (2261), a sliding member 2 (2263) slidably arranged inside the sliding rod (2262), and a blanking plate (2264) arranged at the other end of the sliding member 2 (2263), and the blanking plate (2264) cooperates with the pressing plate (217).

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