A flow divider cone mounting structure for a die casting mold

Abstract

This utility model relates to the field of die casting mold technology and discloses a flow divider cone mounting structure for a die casting mold. It includes a slide block slidably mounted on a moving mold frame, a core-pulling slider detachably mounted on the end of the slide block facing the moving mold core, a flow divider cone clamped between the core-pulling slider and the slide block, and a core-pulling drive mechanism for driving the slide block and the core-pulling slider closer to or further away from the moving mold core. The flow divider cone includes a base and a truncated cone head integrally formed with the base. The truncated cone head has an inwardly recessed flow guide notch, and a locking groove is formed on the end face of the inwardly recessed flow guide notch facing the moving mold core. By setting a locking groove on the flow divider cone, a mechanical limit is formed with the flow divider nozzle during the casting process, effectively limiting the tendency of the flow divider nozzle to move with the fixed mold in the early stage of mold opening. This fundamentally avoids breakage, cracking, or surface damage to the casting caused by pulling, significantly improving the casting yield.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold technology, and in particular to a flow divider cone mounting structure for die casting molds. Background Technology

[0002] In the structural design of die-casting molds, the runner cone, as a key component for controlling the flow of molten metal, is usually used in conjunction with the sprue bushing mounted on the fixed mold to ensure that the molten metal can fill the cavity smoothly and orderly. In traditional designs, the runner cone is mostly fixedly mounted on the moving mold core, and the forming and demolding process of the casting is completed by the opening and closing action of the moving mold and the fixed mold, in conjunction with the core-pulling mechanism.

[0003] However, in some die-casting molds with complex structures or limited space, the traditional installation method is difficult to meet the space requirements due to the compact layout around the moving mold core. To solve this problem, the industry has gradually adopted a solution that designs and installs the runner cone on the core-pulling slider of the moving mold core. By utilizing the movement characteristics of the core-pulling slider, the matching accuracy between the runner cone and the sprue bushing can be ensured while adapting to the space constraints of the mold.

[0004] Ideally, when using this installation scheme, the mold opening process after casting should follow a specific sequence: First, the fixed mold core separates from the casting, and the casting remains on the moving mold core due to the clamping force on the moving mold side; then, the core-pulling slider on the moving mold core drives the flow divider cone to detach from the casting; finally, the casting is removed from the mold core by a robotic arm, completing the entire demolding process.

[0005] However, in actual production, the above process often encounters problems due to the lack of effective limiting of the casting's sprue position. Specifically, during the initial mold opening stage when the fixed mold separates from the moving mold, the sprue portion of the casting is prone to moving along with the fixed mold due to the adhesive force generated by the cooling and shrinkage of the molten metal or factors such as mold clearance. Since the sprue cone is still in contact with the casting through the core-pulling slider at this time, the unexpected movement of the casting's sprue portion will cause a pulling force between it and the sprue cone, resulting in the casting breaking, cracking, or surface damage, seriously affecting product quality and production efficiency.

[0006] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a flow divider cone mounting structure for a die casting mold, which aims to restrict the flow divider part of the casting from moving with the fixed mold when the die casting mold is opened.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A flow divider cone mounting structure for a die-casting mold includes a slide block slidably mounted on a moving mold frame, a core-pulling slider detachably mounted on the end of the slide block facing the moving mold core, a flow divider cone clamped between the core-pulling slider and the slide block, and a core-pulling drive mechanism for driving the slide block and the core-pulling slider closer to or further away from the moving mold core. The flow divider cone includes a base and a truncated cone head integrally formed with the base. The truncated cone head is provided with a concave flow guide notch, and a locking groove is formed on the end face of the concave flow guide notch facing the moving mold core.

[0010] As a further improvement to the above technical solution, the cross-section of the base of the diverter cone is an arc shape, a positioning block is provided on the end face of the slide block facing the core-pulling slider, a positioning groove adapted to the positioning block is provided on the core-pulling slider, and the slide block and the core-pulling slider are connected by screws.

[0011] As a further improvement to the above technical solution, a first groove is formed on the core-pulling slider to fit into the base, and a second groove is formed on the slide block to fit into the base. The first groove and the second groove are combined to form an installation groove with the same shape as the base.

[0012] As a further improvement to the above technical solution, the bottom surface of the base is provided with multiple threaded holes, and the bottom surface of the slide is provided with countersunk holes that are the same number as the threaded holes and correspond one-to-one. The screw passes through the countersunk hole and connects with the corresponding threaded hole.

[0013] As a further improvement to the above technical solution, the bottom surface of the flow divider cone is provided with a cooling channel connecting its interior. The water inlet end of the cooling channel is provided with a spiral guide plug. The central axis of the spiral guide plug is provided with a through hole and the through hole is connected to the first point cold pipe. The water outlet end of the cooling channel is connected to the second point cold pipe.

[0014] As a further improvement to the above technical solution, the core-pulling drive mechanism includes a U-shaped frame fixed on the side of the moving mold frame and an oil cylinder mounted on the U-shaped frame. The piston rod end of the oil cylinder is connected to the slide block through a joint.

[0015] As a further improvement to the above technical solution, the moving mold frame is provided with guide strips on the left and right sides of the slide to guide the slide's movement.

[0016] As a further improvement to the above technical solution, the slot is a rectangular slot structure with chamfered edges.

[0017] The beneficial effects of this utility model are as follows: Compared with the prior art, the diversion cone installation structure provided by this utility model forms a mechanical limit with the diversion sprue during the casting process by setting a locking groove on the diversion cone. This effectively limits the tendency of the diversion sprue to move with the fixed mold in the early stage of mold opening, fundamentally avoiding the breakage, cracking or surface damage of the casting caused by pulling, and significantly improving the yield of the casting.

[0018] In addition, the flow divider cone is clamped between the core-pulling slider and the slide block. Combined with the driving action of the core-pulling drive mechanism, the relative position of the flow divider cone and the moving mold core can be flexibly adjusted, perfectly adapting to the complex mold structure with a compact surrounding space of the moving mold core. The installation requirements can be met without changing the traditional layout of the moving mold core. Attached Figure Description

[0019] Figure 1 A perspective view of the diverter cone mounting structure provided by this utility model.

[0020] Figure 2 For the three-dimensional distribution cone Figure 1 .

[0021] Figure 3 A three-dimensional view of the slide block and the core-pulling slider clamping the flow divider cone.

[0022] Figure 4 This is an exploded view of the slide block, the core-pulling slider, and the flow divider cone.

[0023] Figure 5 This is a three-dimensional view of the casting.

[0024] Figure 6 For the three-dimensional distribution cone Figure 2 .

[0025] Figure 7 This is a three-dimensional view of the spiral guide plug.

[0026] Figure 8 This is a three-dimensional view of the cooling effect of the first and second point cooling pipes on the flow divider cone.

[0027] Figure 9 This is a schematic diagram of the bottom structure of the slide.

[0028] Explanation of main component symbols: 11-Moving mold frame, 12-Moving mold core, 2-Slide block, 21-Counterhead hole, 22-Positioning block, 3-Core pulling slider, 31-Positioning groove, 4-Diverter cone, 41-Cut cone head, 42-Base, 421-Threaded hole, 43-Concave guide notch, 44-Positioning groove, 45-Cooling channel, 5-Core pulling drive mechanism, 51-U-shaped frame, 52-Oil cylinder, 53-Guide strip, 6-Mounting groove, 61-First groove, 62-Second groove, 71-Spiral guide plug, 711-Through hole, 72-First cooling pipe, 73-Second cooling pipe, 8-Casting, 81-Diverter gating, 82-Protrusion. Detailed Implementation

[0029] This utility model provides a flow divider cone mounting structure for a die-casting mold. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0030] Please see Figures 1 to 5 This utility model provides a flow divider cone mounting structure for a die casting mold, including a slide block 2 slidably mounted on a moving mold frame 11, a core-pulling slider 3 detachably mounted on the end of the slide block 2 facing the moving mold core 12, a flow divider cone 4 clamped between the core-pulling slider 3 and the slide block 2, and a core-pulling drive mechanism 5 for driving the slide block 2 and the core-pulling slider 3 to move closer to or away from the moving mold core 12. The flow divider cone 4 includes a base 42 and a truncated cone head 41 integrally formed with the base 42. The integrally formed base 42 and truncated cone head 41 structure ensures the structural strength of the flow divider cone 4 and can withstand the high temperature and high pressure impact of molten metal for a long time. The truncated cone head 41 is provided with a concave flow guide notch 43, which can accurately guide the flow of molten metal, reduce turbulence and impact of molten metal when filling the cavity, and improve the molding quality of the casting 8. The concave flow guide notch 43 is provided with a locking groove 44 on the end face of the concave flow guide notch facing the moving mold core 12.

[0031] During the die casting process, the flow divider cone mounting structure achieves precise flow guidance of molten metal and stable demolding of casting 8 through the coordinated operation of its components. Specifically, the core-pulling drive mechanism 5 drives the slide block 2 to slide along the moving mold frame 11, causing the core-pulling slider 3 to approach the moving mold core 12. At this time, the truncated cone head 41 of the flow divider cone 4 precisely aligns with the sprue sleeve on the fixed mold. The concave flow guide notch 43 on the truncated cone head 41 guides the molten metal to fill the cavity according to a preset path, ensuring smooth flow of the molten metal. When the molten metal cools and solidifies, the flow divider sprue 81 of casting 8 will be embedded in the locking groove 44 on the end face of the truncated cone head 41 to form a mechanically limiting protrusion 82.

[0032] During the mold opening stage, in the initial separation of the fixed mold and the moving mold, the protrusion 82 on the sprue 81 of the casting 8 effectively engages with the sprue cone 4 through the locking groove 44, thus limiting the casting 8 to the moving mold side and preventing it from moving with the fixed mold. After the fixed mold core is completely separated from the casting 8, the core-pulling drive mechanism 5 reverses the drive of the slide block 2, causing the core-pulling slider 3 and the sprue cone 4 to move away from the moving mold core 12. The locking groove 44 disengages from the protrusion 82 on the sprue 81, and finally, the casting 8 remaining on the moving mold core 12 can be easily removed by the robotic arm.

[0033] Compared with the prior art, the diversion cone installation structure provided by this utility model sets a locking groove 44 on the diversion cone 4, which forms a mechanical limit with the diversion sprue 81 during the casting process of the casting 8. This effectively restricts the tendency of the diversion sprue 81 to move with the fixed mold in the early stage of mold opening, fundamentally avoiding the casting 8 from being pulled apart, cracked or damaged on the surface, and significantly improving the yield of the casting 8.

[0034] In addition, the flow divider cone 4 is clamped between the core-pulling slider 3 and the slide block 2. Combined with the driving action of the core-pulling drive mechanism 5, the relative position of the flow divider cone 4 and the moving mold core 12 can be flexibly adjusted, perfectly adapting to the complex mold structure with a compact surrounding space of the moving mold core 12. The installation requirements can be met without changing the traditional layout of the moving mold core 12.

[0035] In this embodiment, the locking groove 44 is a rectangular groove structure with chamfered edges. From the perspective of limiting stability, the rectangular groove structure can form a rectangular protrusion 82 in the sprue 81 part of the casting 8, which can provide more comprehensive circumferential limiting, further enhance the locking effect on the sprue 81, reduce the shaking of the sprue 81 relative to the locking groove 44 when the mold is opened, make the limiting more reliable, and reduce the risk of damage to the casting 8 due to uneven local stress.

[0036] The chamfered edge design serves two purposes. First, during the molten metal filling process, it guides the molten metal to flow more smoothly into the slot 44, avoiding stagnation or eddies caused by the right-angled edges, thus ensuring the molding quality of the sprue 81. Second, during mold opening, the chamfer reduces friction and scraping between the slot 44 and the sprue 81 as the core-pulling slider 3 pulls the sprue cone 4 away from the casting 8, lowering demolding resistance and protecting the integrity of the sprue cone 81 of the casting 8. It also reduces wear on the edge of the slot 44 of the sprue cone 4, extending the service life of the sprue cone 4.

[0037] In a preferred embodiment, the base 42 of the flow divider cone 4 has a superior arc-shaped cross-section. Besides increasing the contact area, another key function is to limit its circumferential rotation through an asymmetrical shape. Since the superior arc shape is not a circular or equally symmetrical structure, when clamped between the core-pulling slider 3 and the slide block 2, its arc-shaped edge forms a circumferential limit with the mating surfaces of the core-pulling slider 3 and the slide block 2, effectively preventing the flow divider cone 4 from circumferentially deflecting under the impact of molten metal and the lateral force of the core-pulling action.

[0038] Preferably, a positioning block 22 is provided on the end face of the slide block 2 facing the core-pulling slider 3, and a positioning groove 31 adapted to the positioning block 22 is provided on the core-pulling slider 3. The slide block 2 and the core-pulling slider 3 are connected by screws. The positioning block 22 on the slide block 2 and the positioning groove 31 on the core-pulling slider 3 are adapted to each other, which can quickly achieve positioning during the assembly of the two, ensuring the accurate relative position of the core-pulling slider 3 and the slide block 2, avoiding the impact of assembly deviation on the fitting accuracy of the flow divider cone 4, the moving mold core 12, and the sprue bushing. At the same time, it also provides a pre-fixing effect for subsequent screw connection, which is convenient for assembly operation. The connection between the slide block 2 and the core-pulling slider 3 by screws is not only reliable and can withstand the driving force and impact force during the core-pulling process, but also facilitates disassembly and maintenance. When the core-pulling slider 3 or the slide block 2 is worn, it can be easily replaced, reducing the maintenance cost of the mold.

[0039] In fact, see Figure 4 As shown, the core-pulling slider 3 has a first slot 61 that fits into the base 42, and the slide block 2 has a second slot 62 that fits into the base 42. The first slot 61 and the second slot 62 are combined to form a mounting groove 6 with the same shape as the base 42. On the one hand, since the mounting groove 6 is perfectly matched with the arc-shaped structure of the base 42, it can form a full-range wrapping fit on the base 42 of the diversion cone 4, further strengthening the circumferential limiting effect on the diversion cone 4. This tightly fitted structure avoids gaps between the base 42 and the mounting groove 6, effectively resisting the circumferential torque caused by the impact of molten metal and the lateral force of core pulling, completely preventing the diversion cone 4 from rotating circumferentially during operation, ensuring that the preset orientation of the concave guide notch 43 and the positioning groove 44 is always accurate, ensuring the stability of molten metal flow and the reliable limiting of the diversion nozzle 81 by the positioning groove 44.

[0040] Further details can be found here. Figure 9 As shown, the bottom surface of the base 42 is provided with multiple threaded holes 421, and the bottom surface of the slide 2 is provided with countersunk holes 21 of the same number and corresponding to the threaded holes 421. Screws pass through the countersunk holes 21 and connect to the corresponding threaded holes 421. From the perspective of connection strength, the multiple evenly distributed threaded holes 421 and countersunk holes 21 connected by screws can firmly lock the base 42 of the flow divider cone 4 onto the slide 2. Combined with the fitting structure of the mounting groove 6 formed by the first groove 61 and the second groove 62, a double fixing mode is formed. This double fixing can significantly improve the flow divider cone 4's ability to resist high-pressure impact from molten metal and lateral forces during core pulling, preventing loosening or displacement of the flow divider cone 4 during long-term, high-frequency operation, and ensuring long-term stable fitting accuracy between it and the sprue bushing.

[0041] The countersunk hole 21 is designed so that the screw head can be fully embedded in the bottom surface of the slide block 2, avoiding the screw head from protruding from the surface of the slide block 2 and affecting the smooth sliding of the slide block 2 on the moving mold frame 11. At the same time, it prevents the screw from interfering with other parts of the mold, ensuring the flexibility and stability of the core pulling drive mechanism 5 when it drives the slide block 2, and reducing movement jamming or component wear caused by structural interference.

[0042] See Figures 5 to 8 As shown, in order to control the temperature of the flow divider cone 4, a cooling channel 45 is formed on the bottom surface of the flow divider cone 4, connecting to its interior. A spiral guide plug 71 is provided at the water inlet end of the cooling channel 45. A through hole 711 is formed on the central axis of the spiral guide plug 71, and the through hole 711 is connected to the first cooling pipe 72. The water outlet end of the cooling channel 45 is connected to the second cooling pipe 73. Coolant is introduced into the cooling channel 45 through the first cooling pipe 72, guided by the spiral guide plug 71, flows within the channel, and is finally discharged through the second cooling pipe 73, forming a complete cooling cycle. The through hole 711 in the central shaft of the spiral guide plug 71 not only provides an entry channel for the coolant, but its spiral structure can also change the flow state of the coolant, so that the coolant forms a spiral turbulent flow in the cooling channel 45, increasing the contact area and contact time with the inner wall of the diverter cone 4, significantly improving the heat exchange efficiency, and quickly removing the high temperature of the molten metal absorbed by the diverter cone 4 during the die casting process. This prevents the diverter cone 4 from thermal deformation or surface cracking due to long-term exposure to high temperature environment, and effectively extends its service life.

[0043] From the perspective of casting 8's quality, a stable cooling effect can control the temperature of the flow divider cone 4, preventing premature or uneven cooling of the molten metal during the flow process due to overheating of the flow divider cone 4. This ensures that the molten metal maintains good fluidity, thereby guaranteeing sufficient cavity filling and stable molding of casting 8. Simultaneously, the stable temperature of the flow divider cone 4 also reduces the impact of its own thermal expansion and contraction on the fit accuracy with the gating sleeve, further ensuring the consistency of the molten metal flow path and reducing the probability of defects such as porosity, shrinkage cavities, and cold shuts in casting 8.

[0044] For details, see Figure 1 As shown, the core-pulling drive mechanism 5 includes a U-shaped frame 51 fixed on the side of the moving mold frame 11 and a hydraulic cylinder 52 mounted on the U-shaped frame 51. The piston rod end of the hydraulic cylinder 52 is connected to the slide block 2 via a connector. As a power source, the hydraulic cylinder 52 provides a continuous and controllable driving force. Through the extension and retraction of the piston rod, it precisely drives the slide block 2 to slide along the moving mold frame 11, ensuring that the moving speed and stroke of the core-pulling slider 3 and the flow divider cone 4 are stable and controllable. This avoids the core-pulling action from jamming or excessive impact due to fluctuations in driving force, thereby ensuring the fitting accuracy of the flow divider cone 4 with the moving mold core 12 and the sprue sleeve, as well as the smoothness of the core-pulling process when the mold is opened, reducing potential damage to the casting 8.

[0045] Furthermore, the moving mold frame 11 is provided with guide strips 53 on the left and right sides of the slide block 2 to guide the slide block 2 to slide. The guide strips 53 form a double-sided limit on the slide block 2, which can effectively limit the slide block 2 from shifting left and right or wobbling during the sliding process. When the core pulling drive mechanism 5 drives the slide block 2 to move, the guide strips 53 can guide the slide block 2 to slide smoothly along the preset trajectory, avoiding deviations in the fit between the core pulling slider 3 and the flow divider cone 4 and the moving mold core 12 and the sprue sleeve due to the offset of the slide block 2. This ensures that the flow divider cone 4 accurately connects with the sprue sleeve during die casting, and ensures the smoothness of the core pulling action when the mold is opened, reducing accidental collisions or scratches to the casting 8.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A runner cone mounting structure of a die-casting mold characterized by comprising: The core-pulling mechanism comprises a slide base arranged on a movable die frame, a core-pulling slider detachably arranged on an end of the slide base facing a movable die core, a flow-dividing cone clamped between the core-pulling slider and the slide base, and a core-pulling driving mechanism for driving the slide base and the core-pulling slider to move towards or away from the movable die core.

2. The runner cone mounting structure of the die casting mold according to claim 1, characterized by, The cross section of the base of the flow-dividing cone is an arcuate bow shape, the end surface of the slide base facing the core-pulling slider is provided with a positioning block, the core-pulling slider is provided with a positioning groove matching the positioning block, and the slide base and the core-pulling slider are connected by screws.

3. The runner cone mounting structure of the die casting mold according to claim 2, characterized by, The core-pulling slider is formed with a first slot matching the base, the slide base is formed with a second slot matching the base, and the first slot and the second slot jointly form an installation slot with the same shape as the base.

4. The runner cone mounting structure of the die casting mold according to claim 1, characterized by, The bottom surface of the base is provided with a plurality of threaded holes, the bottom surface of the slide base is provided with a plurality of countersunk holes corresponding to the threaded holes, and the threaded holes are connected with the corresponding threaded holes through the countersunk holes.

5. The runner cone mounting structure of the die casting mold according to claim 1, characterized by, The bottom surface of the flow-dividing cone is provided with a cooling flow channel connected with the inside of the flow-dividing cone, the water inlet end of the cooling flow channel is provided with a spiral flow guide plug, the central axis of the spiral flow guide plug is provided with a through hole connected with a first cold pipe, and the water outlet end of the cooling flow channel is connected with a second cold pipe.

6. The runner cone mounting structure of the die casting mold according to claim 1, characterized by, The core-pulling driving mechanism comprises a U-shaped frame fixed on the side surface of the movable die frame and an oil cylinder arranged on the U-shaped frame, and the piston rod end of the oil cylinder is connected with the slide base through a joint.

7. The runner cone mounting structure of the die casting mold according to claim 1, characterized by, The movable die frame is provided with guide strips on the left and right sides of the slide base for guiding the sliding of the slide base.

8. The runner cone mounting structure of a die casting mold according to any one of claims 1 to 7, characterized in that, The clamping groove is a rectangular groove structure with a chamfered edge transition.

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