Multi-cavity mold and casting machine

Abstract

The invention relates to the field of casting, in particular to a multi-cavity mold and a casting machine, and aims to solve the problem that the number of cavities in an existing multi-cavity mold is small. In order to achieve the purpose, the multi-cavity mold comprises an upper mold frame assembly, a lower mold frame assembly and a plurality of mold units which are arranged in a circumferential uniform distribution mode; the mold unit comprises an upper mold core and a lower mold core; the lower die core is connected with the lower die frame assembly; the upper mold core is connected with the upper mold frame assembly, the upper mold core is arranged to be capable of moving up and down relative to the lower mold frame assembly along with the upper mold frame assembly in a reciprocating mode, and in the mold closing state, the upper mold core and the lower mold core define two cavities; and the cooling unit is arranged on the upper mold core, the cooling unit comprises point coolers and line coolers, the number of the point coolers on the upper mold core corresponding to different mold cavity positions is consistent, and the line coolers are arranged to be capable of cooling all blank castings in the mold unit. And due to the combined cooling design of point cooling and line cooling, thermal stress deformation is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of casting, and in particular provides a multi-cavity mold and a casting machine. Background Art

[0002] With the increasing demand for lightweight vehicles, aluminum alloys are becoming the preferred material for steering knuckles due to their light weight and high strength. A356 aluminum alloy, due to its excellent casting and mechanical properties, is widely used in low-pressure casting of steering knuckles. Low-pressure casting also allows for better control of mold filling speed and pressure, reducing porosity and shrinkage defects in the casting, while improving the density and mechanical properties of the casting. Furthermore, low-pressure casting significantly improves molten metal utilization and reduces material consumption.

[0003] With advances in mold manufacturing technology, multi-cavity mold design has become an important means of improving production efficiency. This design allows multiple cavities to be arranged in a single mold, thereby producing multiple castings in a single casting process, significantly improving production efficiency. However, existing technology generally provides six cavities in a mold, which is a relatively small number of cavities.

[0004] Accordingly, this field requires a new technical solution to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems and the problem of small number of cavities in existing molds.

[0006] The present invention provides a multi-cavity mold, which includes: an upper mold frame assembly, a lower mold frame assembly, and multiple mold units, which are arranged in a circumferentially uniform manner; the mold unit includes an upper mold core and a lower mold core; the lower mold core is connected to the lower mold frame assembly; the upper mold core is connected to the upper mold frame assembly, and the upper mold core is configured to be able to reciprocate up and down with the upper mold frame assembly relative to the lower mold frame assembly to perform mold closing or mold opening of the multi-cavity mold; in the mold closing state, the upper mold core and the lower mold core are arranged to form two cavities, and the cavities are configured to form blank castings in each of the cavities; and a cooling unit, which is arranged on the upper mold core, and the cooling unit includes spot cooling and line cooling, and the number of the spot cooling on the upper mold core corresponding to different cavity positions is consistent, and the line cooling is configured to be able to cool all the blank castings in the mold unit.

[0007] When adopting the above technical solution, space utilization is maximized by evenly distributing mold units around the circumference. Each mold unit is equipped with dual cavities, which can double the single casting output while ensuring the filling quality. The combined cooling design of spot cooling and line cooling reduces thermal stress deformation, while increasing the cooling speed, thereby improving production efficiency.

[0008] In a specific implementation of the above-mentioned multi-cavity mold, the number of the mold units is four, and the four mold units are evenly distributed around the circumference. The mold units are rectangular parallelepipeds, and the edges of the mold units close to each other are chamfered.

[0009] When adopting the above technical solution, the symmetrical layout of the four rectangular mold units makes the overall force of the multi-cavity mold more balanced, thereby extending the service life of the multi-cavity mold; the chamfer design effectively eliminates the stress concentration phenomenon at the corners, reduces the risk of cracking of the multi-cavity mold, and at the same time can reasonably arrange the position of the rectangular mold units to improve space utilization.

[0010] In a specific embodiment of the above-mentioned multi-cavity mold, the upper mold core is provided with two molding parts, and the lower mold core is provided with two lower mold recesses. The molding parts and the lower mold recesses are arranged correspondingly, and two cavities are formed in the mold closing state; a partition part is provided between the two molding parts on the upper mold core, and the two molding parts are mirror-imaged relative to the partition part.

[0011] When the above technical solution is adopted, the two molding parts are designed to be mirror images relative to the partition part to ensure the dimensional consistency of the dual-cavity casting.

[0012] In the above-mentioned specific embodiment of the multi-cavity mold, the spot cooling corresponding to the two forming parts on the upper mold core is mirror-imaged relative to the partition part.

[0013] When using this technical solution, the symmetrical distribution of the heat field prevents localized overcooling and undercooling defects while simultaneously cooling the corresponding cavities of both molding sections. Multiple spot cooling systems can rapidly reduce the temperature of the upper mold core. Because spot cooling is localized, it allows for more precise control of the upper mold core temperature, ensuring casting quality, increasing cooling speed, and ultimately improving production efficiency.

[0014] In a specific embodiment of the above-mentioned multi-cavity mold, the cooling unit further includes two diverter cones, which are respectively arranged on the upper mold core corresponding to the positions of the two forming parts, and the two diverter cones are mirror-imaged relative to the partition part.

[0015] When the above technical solution is adopted, the symmetrical layout of the diverter cone optimizes the flow path of the molten metal, reduces oxidation inclusions caused by turbulence, and the mirror configuration ensures the synchronization of filling in the two cavities, thereby improving the yield rate.

[0016] In the specific embodiment of the above-mentioned multi-cavity mold, the mold unit also includes two side mold cores. In the mold closing state, the upper mold core, the lower mold core and one side mold core are jointly arranged to form the mold cavity; the upper mold core, the lower mold core and another side mold core are jointly arranged to form another mold cavity; the side mold core is configured to be able to move outward relative to the upper mold core until the lateral core pulling is completed.

[0017] When adopting the above technical solution, the movable side mold core design realizes the one-piece molding of complex castings, breaking through the geometric limitations of traditional molds. At the same time, the two side mold cores form two cavities, and lateral core pulling can be completed at the same time, further improving production efficiency.

[0018] In a specific embodiment of the above-mentioned multi-cavity mold, the multi-cavity mold also includes four core pulling devices arranged on the lower mold frame assembly, and the four core pulling devices are arranged in a one-to-one correspondence with the four mold units, and the core pulling device is configured to be able to move outward relative to the upper mold core until the lateral core pulling is completed; the core pulling device includes a fixed base, a telescopic assembly and a connecting plate; the fixed base is fixedly connected to the lower mold frame assembly, one end of the telescopic assembly is connected to the fixed base, and the other end of the telescopic assembly is connected to the connecting plate, one of the connecting plates is connected to the two side mold cores, and the telescopic assembly is configured to be able to drive the two side mold cores to move.

[0019] When the above technical solution is adopted, four sets of independent core pulling devices can realize precise and synchronous core pulling through telescopic components. The two side mold cores form two cavities, and the side core pulling can be completed at the same time, further improving production efficiency.

[0020] In the specific embodiment of the above-mentioned multi-cavity mold, the upper mold frame assembly includes a mold frame top plate and a plurality of vertically arranged columns, and the two ends of the columns are respectively connected to the mold frame top plate and the upper mold core; the lower mold frame assembly includes a mold frame bottom plate, and the lower mold core of the mold unit can be locked and fixed on the mold frame bottom plate by a shoulder screw.

[0021] In the above-mentioned specific embodiment of the multi-cavity mold, the cooling unit includes an upper water distributor distributed in the peripheral area of the mold frame top plate, the upper water distributor is configured in a one-to-one correspondence with each mold unit, and the upper water distributor is connected to the spot cooling, the line cooling and the diverter cone; and The diameter of the column is 100 mm; and A reinforcing rib is provided on one side of the upper mold core connected to the column.

[0022] When the above technical solution is adopted, each mold unit is equipped with an independent upper water distributor, which can be differentially regulated according to the cooling requirements of different cavities to ensure that the cooling rate of each cavity is consistent. This precise regulation can effectively avoid problems such as casting deformation, cracks or internal stress concentration caused by uneven cooling, thereby improving the dimensional accuracy and mechanical properties of the casting. The diameter of the column is set to 100 mm. By increasing the diameter to increase the contact area between the column and the upper mold core, the bearing capacity of the connection part is improved. Multiple columns are evenly arranged along the edge of the upper mold core, which effectively suppresses the edge deformation of the upper mold core by dispersing the stress concentration during the mold closing process. Reinforcing ribs are also provided in the connection area between the upper mold core and the column to further enhance the rigidity of the middle area of the upper mold core, making up for the deficiency that the middle column cannot be added due to the space limitation on the back of the cavity.

[0023] The invention also discloses a casting machine comprising the multi-cavity mold.

[0024] When adopting the above technical solution, space utilization is maximized by evenly distributing mold units around the circumference. Each mold unit is equipped with dual cavities, which can double the single casting output while ensuring the filling quality. The combined cooling design of spot cooling and line cooling reduces thermal stress deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which: Figure 1 1 is a schematic diagram of the overall front structure of an embodiment of a multi-cavity mold; Figure 2 1 is a schematic side view of the overall structure of an embodiment of a multi-cavity mold; Figure 3 is a perspective view of an embodiment of a mold unit of a multi-cavity mold; Figure 4 1 is a schematic structural diagram of an embodiment of a top surface of an upper mold core of a multi-cavity mold; Figure 5 It is a multi-cavity mold Figure 4 A cross-sectional view of an embodiment of the upper mold core at the position of the dotted line A; Figure 6 is a cross-sectional view of an embodiment of an upper mold core and a lower mold core of a multi-cavity mold in an assembled state; Figure 7 is a cross-sectional view of an embodiment of a diverter cone for a multi-cavity mold; Figure 8 FIG. 4 is a cross-sectional view of an embodiment of a diverter cone of a multi-cavity mold from another angle.

[0026] List of reference numerals: 1-upper mold frame assembly; 11-mold frame top plate; 12-column; 2-lower mold frame assembly; 21-mold frame bottom plate; 31-upper mold core; 311-reinforcement rib; 312-molding part; 313-partition part; 32-lower mold core; 321-lower mold recess; 33-side mold core; 4-core pulling device; 41-fixed base; 42-telescopic assembly; 43-connecting plate; 5-cooling unit; 51-spot cooling; 52-diverter cone; 521-conical body; 522-water cooling pipe; 523-cooling joint; 524-first ferrule joint; 525-diverter cone return pipe; 526-diverter cone inlet pipe; 527-second ferrule joint; 53-line cooling; 54-cooling pipeline; 6-upper water distributor. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely intended to illustrate the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art may adjust these embodiments as needed to suit specific applications.

[0028] It should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or other connection; it can be directly connected or indirectly connected through an intermediary. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] It should be understood that the terms "upper," "lower," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, "plurality" in this application means at least two.

[0030] like Figure 1-8As shown, to address the problem of a limited number of cavities in existing single multi-cavity molds, the present invention provides a multi-cavity mold. The multi-cavity mold comprises an upper mold frame assembly 1, a lower mold frame assembly 2, and multiple mold units evenly distributed around a circumference. Each mold unit includes an upper mold core 31 and a lower mold core 32; the lower mold core 32 is connected to the lower mold frame assembly 2; and the upper mold core 31 is connected to the upper mold frame assembly 1. The upper mold core 31 is configured to reciprocate up and down relative to the lower mold frame assembly 2 with the upper mold frame assembly 1 to close or open the multi-cavity mold. In the closed state, the upper mold core 31 and the lower mold core 32 enclose two cavities, each of which is configured to form a blank casting. A cooling unit 5 is provided on the upper mold core 31. The cooling unit 5 includes spot cooling 51 and linear cooling 53. The number of spot cooling 51 on the upper mold core 31 corresponding to each cavity position is the same, and the linear cooling 53 is configured to cool all blank castings within the mold unit. Space utilization is maximized by evenly distributing mold units around the circumference. Each mold unit is equipped with dual cavities, which multiplies the single casting output while ensuring filling quality. The combined cooling design of spot cooling 51 and line cooling 53 reduces thermal stress deformation, improves cooling efficiency, and at the same time increases production efficiency.

[0031] like Figure 1-8 As shown, in one or more embodiments, a multi-cavity mold includes an upper mold frame assembly 1, a lower mold frame assembly 2, four mold units and a cooling unit 5, the four mold units are connected to the upper mold frame assembly 1 and the lower mold frame assembly 2, and the four mold units are arranged in a circumferentially uniform manner. Alternatively, the number of mold units can also be three, five or more. In this embodiment, there are preferably four mold units, which can fully utilize the space of the upper mold frame assembly 1 and the lower mold frame assembly 2 and increase the production quantity. The cooling unit 5 is used to cool the mold unit. Cooling the casting in the mold unit by the cooling unit 5 can reduce stress deformation.

[0032] like Figure 3 and Figure 4 As shown, in one or more embodiments, the mold unit is in the form of a rectangular parallelepiped, and the edges of the mold units that are close to each other are chamfered. The chamfered design effectively eliminates the stress concentration phenomenon at the edges and corners, reduces the risk of cracking of the multi-cavity mold, and at the same time can reasonably arrange the position of the rectangular mold unit to improve the utilization rate of space. The four mold units are all in the form of rectangular parallelepipeds and are arranged symmetrically, so that the overall force of the multi-cavity mold is more balanced and the service life of the multi-cavity mold is extended. Alternatively, the mold unit can also be in the form of a cube. Alternatively, the edges of the mold units that are close to each other can also be rounded, and of course corresponding grooves and protrusions can also be provided to further utilize the space.

[0033] like Figure 1-2As shown, in one or more embodiments, the mold unit includes an upper mold core 31 and a lower mold core 32. The lower mold core 32 is connected to the lower mold frame assembly 2. The upper mold core 31 is connected to the upper mold frame assembly 1, and the upper mold core 31 can reciprocate up and down with the upper mold frame assembly 1 relative to the lower mold frame assembly 2 to perform mold closing or mold opening of the multi-cavity mold. In the closed mold state, the upper mold core 31 and the lower mold core 32 are arranged to form two mold cavities, and the mold cavities are configured so that a blank casting can be formed in each cavity. The single casting output is multiplied while ensuring the filling quality.

[0034] like Figure 4 and Figure 5 As shown, in one or more embodiments, the upper mold core 31 is provided with two forming portions 312, with a partition 313 disposed between the two forming portions 312 on the upper mold core 31. The shapes and positions of the two forming portions 312 are mirror images of the partition 313. Alternatively, a mirror image arrangement is not required, and the positions of the two forming portions 312 are mirror images of the partition 313, but the shapes may be offset. Furthermore, the relative positional relationship of the two forming portions 312 may also be other possible positions.

[0035] like Figure 3 and Figure 6 As shown, in one or more embodiments, the lower mold core 32 is provided with two lower mold recesses 321 , and the lower mold recesses 321 are provided corresponding to the forming portion 312 to form a cavity for forming the blank casting.

[0036] like Figure 5 and Figure 6 As shown, in one or more embodiments, the upper mold core 31 and the lower mold core 32 are both made of H13 material. Of course, those skilled in the art may choose to use other materials for the upper mold core 31 and the lower mold core 32 based on the specific application scenario. The thickness of the outer wall of the mold cavity formed by the upper mold core 31 and the lower mold core 32 is relatively uniform, ensuring relatively uniform cooling of the casting within the mold cavity. This ensures that the cooling effect on the molten metal is essentially uniform across all parts of the mold cavity, which is conducive to obtaining castings with dense structure and excellent performance.

[0037] like Figure 3 and Figure 6As shown, the mold unit also includes two side mold cores 33. In the mold closing state, a forming portion 312 of the upper mold core 31, a lower mold recess 321 of the lower mold core 32 and a side mold core 33 together form a mold cavity; another forming portion 312 of the upper mold core 31, another lower mold recess 321 of the lower mold core 32 and another side mold core 33 together form another mold cavity; the side mold core 33 is configured to be able to move outward relative to the upper mold core 31 until lateral core pulling is completed. The movable side mold core 33 design realizes the one-piece molding of complex castings, breaking through the geometric limitations of traditional multi-cavity molds. At the same time, the two side mold cores 33 form two mold cavities, and lateral core pulling can be completed simultaneously, further improving production efficiency. Alternatively, the side mold core 33 can also be omitted.

[0038] like Figure 1 and Figure 2 As shown, in one or more embodiments, the upper mold frame assembly 1 includes a plurality of vertically arranged columns 12 on the mold frame top plate 11. The ends of the columns 12 connect the mold frame top plate 11 and the upper mold core 31, respectively. Each upper mold core 31 is connected to the top plate via five columns 12, and the five columns 12 are located at the edges of the upper mold core 31. The diameter of the columns 12 is 100 mm. Increasing the diameter of the columns 12 increases the contact area between the columns 12 and the upper mold core 31, thereby improving the load-bearing capacity of the connection. Five columns 12 are evenly arranged along the edge of the upper mold core 31 to disperse stress concentration during the mold closing process, effectively suppressing edge deformation of the upper mold core 31. Increasing the number of columns 12 can prevent edge deformation of the upper mold core 31. Alternatively, the diameter of the columns 12 can be 90 mm, 95 mm, 111 mm, etc. The specific value of the diameter of the columns 12 can be adjusted according to actual needs. Alternatively, the number of columns 12 can be four, six, etc. In one or more embodiments, a reinforcing rib 311 is provided on one side of the upper mold core 31 where it connects to the pillar 12. This further enhances the rigidity of the central region of the upper mold core 31, compensating for the inability to add a central pillar 12 due to space limitations on the back of the mold cavity. Alternatively, the reinforcing rib 311 may be omitted.

[0039] like Figure 4 As shown, a cooling unit 5 is provided on the upper mold core 31, and the cooling unit 5 includes spot cooling 51 and line cooling 53. The number of spot cooling 51 on the upper mold core 31 corresponding to different cavity positions is consistent, and the line cooling 53 is configured to cool all the blank castings in the mold unit.

[0040] like Figure 2 and Figure 4As shown, in one or more embodiments, the cooling unit includes an upper water separator 6 distributed in the surrounding area of the mold frame top plate 11, and the upper water separator 6 is configured on each mold unit in a one-to-one correspondence for controlling the cooling of each cavity. A plurality of cooling pipes 54 are provided on each upper water separator 6. Each mold unit is equipped with an independent upper water separator 6, which can be differentially regulated according to the cooling requirements of different cavities to ensure that the cooling rate of each cavity is consistent. This precise regulation can effectively avoid problems such as deformation, cracks or internal stress concentration of castings caused by uneven cooling, thereby improving the dimensional accuracy and mechanical properties of the castings. It is conceivable for those skilled in the art to set a lower water separator on the lower mold frame assembly 2. The specific setting method is consistent with the setting method of the above-mentioned upper water separator 6 and will not be repeated here.

[0041] like Figure 4 As shown, in one or more embodiments, the number of spot cooling elements 51 on an upper mold core 31 is fourteen, and the number of spot cooling elements 51 on a single molding section 312 is seven. The locations of the spot cooling elements 51 on the two molding sections 312 are mirror images of the partition 313. Seven spot cooling elements 51 are configured for each recess, symmetrically distributing the thermal field to avoid localized overcooling or undercooling defects while simultaneously ensuring sufficient cooling for the corresponding mold cavities of the two molding sections 312. The multiple spot cooling elements 51 can rapidly reduce the temperature of the upper mold core 31. Because the spot cooling elements 51 provide localized cooling, they can more accurately control the temperature of the upper mold core 31, thereby ensuring the quality of the casting. Alternatively, those skilled in the art may adjust the location and number of spot cooling elements 51 as needed, as long as the cooling requirements for the mold cavity are met. Specifically, the number of spot cooling elements 51 may be four, five, six, eight, or so on. The spot cooling elements 51 are connected to the upper manifold 6 via a cooling line 54. Specifically, a single spot cooling element 51 may be directly connected to the upper manifold 6 via a cooling line 54. Alternatively, two or three spot coolers 51 may be connected in series through a cooling pipeline 54 and then communicated with the upper water separator 6 .

[0042] like Figure 4 and Figure 5 As shown, in one or more embodiments, the number of the line cooler 53 is one, and the line cooler 53 is a cooling pipe embedded in the upper mold core 31. The two ends of the line cooler 53 are located on the outer surface of the upper mold core 31, and the two ends of the line cooler 53 are connected to the upper water distributor 6 through the cooling pipe 54.

[0043] like Figure 4 and Figure 5As shown, in one or more embodiments, the cooling unit 5 also includes two diverter cones 52, and the two diverter cones 52 are respectively arranged on the upper mold core 31 corresponding to the positions of the two forming parts 312, and the two diverter cones 52 are mirror-imaged relative to the partition part 313. The symmetrical layout of the diverter cones 52 optimizes the flow path of the molten metal, reduces the oxidation inclusions caused by turbulence, and the mirror-image configuration ensures the synchronization of filling in the two cavities, thereby improving the yield rate. The two diverter cones 52 are directly connected to the upper water distributor 6 after being connected in series with the same cooling pipeline 54. This makes it easier to control the temperature of the diverter cone 52. Alternatively, the diverter cone 52 can also select a specific setting position based on the specific application scenario, and the two diverter cones 52 are directly connected to the upper water distributor 6 through different cooling pipelines 54. Of course, the diverter cone 52 can be omitted.

[0044] like Figure 7 As shown, in one or more embodiments, the diverter cone 52 includes a conical body 521, a water cooling pipe 522, a cooling joint 523, a first ferrule joint 524, a diverter cone return pipe 525, and a diverter cone inlet pipe 526. The conical body 521 is disposed on the upper mold core 31 corresponding to the position of the forming portion 312. When the blank casting is die-cast, one end of the conical body 521 ( Figure 6 The lower end shown in FIG) contacts the blank casting to facilitate cooling the blank casting, and the other end of the conical body 521 is opened ( Figure 6 ). A cooling cavity is provided in the conical body 521. A water-cooling pipe 522 is located in the cooling cavity, and a spiral cooling thread is provided on the outer side of the lower end of the water-cooling pipe 522 (one end for cooling the blank casting). The outer diameter of the upper end of the water-cooling pipe 522 is reduced. The lower end of the cooling joint 523 is threadedly connected to the upper end of the conical body 521. Alternatively, the lower end of the cooling joint 523 is snap-fitted to the upper end of the conical body 521. A through hole is provided on the upper end surface of the cooling joint 523, and an abutment groove is provided on the outer side of the lower end of the through hole on the upper end surface of the cooling joint 523. The abutment groove can abut against the upper end of the water-cooling pipe 522, so that the water-cooling pipe 522 is fixed in the conical body 521. A thread is provided on the inner side wall of the upper end of the through hole. The first ferrule joint 524 is connected to the through hole by a thread. One end of the diverter cone return pipe 525 is inserted into and sealed with the first ferrule connector 524. The other end of the diverter cone return pipe 525 communicates with the upper water distributor 6 via the corresponding cooling line 54. It should be noted that the specific structure of the first ferrule connector 524 is conventional and will not be described in detail here.

[0045] like Figure 8As shown, in one or more embodiments, the diverter cone 52 further includes a second ferrule connector 527. A through hole is provided on the left side of the cooling connector 523. One end of the second ferrule connector 527 is threadedly connected to the through hole, and the other end of the second ferrule connector 527 is connected to the diverter cone water inlet pipe 526. The diverter cone water inlet pipe 526 is connected to the upper water manifold 6 via a corresponding cooling line 54. It should be noted that the specific structure of the second ferrule connector 527 is conventional and will not be further described here.

[0046] It should be further explained that the shape of the diverter cone 52 can be selected as needed. Figure 6 and Figure 7 The diverter cone 52 is schematic and can be used as long as it can meet the cooling requirements of the blank casting.

[0047] like Figure 3 As shown, in one or more embodiments, the lower mold frame assembly 2 includes a mold frame base plate 21. The thickness of the mold frame base plate 21 is 100 mm. By increasing the thickness of the mold frame base plate 21, the mold frame base plate 21 can withstand greater downward pressure. Alternatively, the thickness of the mold frame base plate 21 can be 98 mm, 105 mm, etc. The lower mold frame assembly 2 also includes shoulder screws for securing the lower mold core 32.

[0048] like Figure 3 As shown, in one or more embodiments, the multi-cavity mold further includes four core-pulling devices 4 mounted on the mold base plate 21. Each of the four core-pulling devices 4 corresponds to one of the four mold units. The core-pulling devices 4 are configured to move outward relative to the upper mold core 31 until lateral core pulling is completed. The core-pulling devices 4 comprise a fixed base 41, a telescopic assembly 42, and a connecting plate 43. The fixed base 41 is fixedly connected to the mold base plate 21. One end of the telescopic assembly 42 is connected to the fixed base 41, while the other end is connected to the connecting plate 43. One connecting plate 43 is connected to the two side mold cores 33, and the telescopic assembly 42 is configured to drive the movement of the two side mold cores 33. In this way, the four independent core-pulling devices 4 achieve precise and synchronized core pulling through the telescopic assembly 42. The two side mold cores 33 form two cavities, and lateral core pulling can be completed simultaneously, further improving production efficiency. The telescopic assembly 42 can be a hydraulic cylinder, a pneumatic cylinder, or an electric device with one end extending relative to the other, as long as it can move the side mold cores 33.

[0049] The present invention also discloses a casting machine comprising the aforementioned multi-cavity mold. By evenly distributing mold units around the circumference, space utilization is maximized. Each mold unit is equipped with dual cavities, which exponentially increases single-shot casting output while ensuring mold filling quality. The combined cooling design of spot cooling 51 and linear cooling 53 reduces thermal stress and deformation.

[0050] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims of this application, any of the claimed embodiments may be used in any combination.

[0051] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A multi-cavity mold, characterized in that: The multi-cavity mold comprises: Upper mold frame assembly (1), Lower mold frame assembly (2), A plurality of mold units are arranged in a circumferentially uniform manner; The mold unit comprises an upper mold core (31) and a lower mold core (32); the lower mold core (32) is connected to the lower mold frame assembly (2); the upper mold core (31) is connected to the upper mold frame assembly (1), and the upper mold core (31) is configured to be able to move up and down relative to the lower mold frame assembly (2) with the upper mold frame assembly (1) to perform mold closing or mold opening of the multi-cavity mold; in the mold closing state, the upper mold core (31) and the lower mold core (32) are arranged to form two mold cavities, and the mold cavities are configured so that each of the mold cavities can form a blank casting; and a cooling unit (5) disposed on the upper mold core (31), wherein the cooling unit (5) includes spot cooling (51) and line cooling (53), wherein the number of the spot cooling (51) on the upper mold core (31) corresponding to different cavity positions is the same, and the line cooling (53) is configured to cool all the blank castings in the mold unit.

2. The multi-cavity mold according to claim 1, characterized in that: The number of the mold units is four, and the four mold units are evenly distributed around the circumference. The mold units are rectangular parallelepipeds, and the edges of the mold units are chamfered when close to each other.

3. The multi-cavity mold according to claim 1, characterized in that: The upper mold core (31) is provided with two molding parts (312), and the lower mold core (32) is provided with two lower mold recesses (321). The molding parts (312) and the lower mold recesses (321) are arranged correspondingly, and in the mold closing state, they are surrounded to form two mold cavities; a partition part (313) is provided between the two molding parts (312) on the upper mold core (31), and the two molding parts (312) are arranged in a mirror image relative to the partition part (313).

4. The multi-cavity mold according to claim 3, characterized in that: The spot cooling (51) corresponding to the positions of the two forming parts (312) on the upper mold core (31) are mirror-imaged relative to the partition part (313).

5. The multi-cavity mold according to claim 4, characterized in that: The cooling unit (5) further comprises two diverter cones (52), the two diverter cones (52) being respectively arranged on the two forming portions (312), and the two diverter cones (52) being mirror-imaged relative to the partition portion (313).

6. The multi-cavity mold according to claim 2, characterized in that: The mold unit further comprises two side mold cores (33). In the mold closing state, the upper mold core (31), the lower mold core (32) and one side mold core (33) are jointly arranged to form the mold cavity; the upper mold core (31), the lower mold core (32) and another side mold core (33) are jointly arranged to form another mold cavity; the side mold core (33) is configured to be able to move outward relative to the upper mold core (31) until lateral core pulling is completed.

7. The multi-cavity mold according to claim 6, characterized in that: The multi-cavity mold further comprises four core pulling devices (4) arranged on the lower mold frame assembly (2), the four core pulling devices (4) being arranged in one-to-one correspondence with the four mold units, and the core pulling devices (4) being arranged to be able to move outward relative to the upper mold core (31) until lateral core pulling is completed; the core pulling device (4) comprises a fixed base (41), a telescopic assembly (42) and a connecting plate (43); the fixed base (41) is fixedly connected to the lower mold frame assembly (2), one end of the telescopic assembly (42) is connected to the fixed base (41), and the other end of the telescopic assembly (42) is connected to the connecting plate (43), one connecting plate (43) is connected to the two side mold cores (33), and the telescopic assembly (42) is arranged to be able to drive the two side mold cores (33) to move.

8. The multi-cavity mold according to claim 5, characterized in that: The upper mold frame assembly (1) comprises a mold frame top plate (11) and a plurality of vertically arranged columns (12), wherein two ends of the columns (12) are respectively connected to the mold frame top plate (11) and the upper mold core (31); the lower mold frame assembly (2) comprises a mold frame bottom plate (21), and the lower mold core (32) of the mold unit is locked and fixed on the mold frame bottom plate (21) by means of shoulder screws.

9. The multi-cavity mold according to claim 8, characterized in that: The cooling unit includes an upper water distributor (6) distributed in the peripheral area of the mold frame top plate (11), the upper water distributor (6) is configured in a one-to-one correspondence with each mold unit, and the spot cooling (51), the line cooling (53) and the diverter cone (52) of the upper water distributor (6) are connected; and The diameter of the column (12) is 100 mm; and A reinforcing rib is provided on one side of the upper mold core (31) connected to the upright column (12).

10. A casting machine, characterized in that: include: The multi-cavity mold according to any one of claims 1 to 9.

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