Aluminum alloy handle insert die-casting mold

Abstract

The utility model provides a kind of aluminium alloy handle insert die casting die, belong to die casting die technical field.It includes upper die and lower die, the upper die and lower die between formed with forming cavity, the lower die is embedded with lower forming insert with the lower forming surface of composition forming cavity on upper surface, the lower die is protrudingly provided with flow guide column, the flow guide column is symmetrically provided with two arc flow guide grooves towards lower forming surface side, two respectively with arc flow guide groove are connected into the pouring runner and are arranged on the lower forming insert.The die is cooperated with pouring runner and oblique side pouring structure by the arc flow guide groove of flow guide column, realizes the ordered flow of molten liquid;Constant-temperature pouring assembly is heated for pouring nozzle, and multiple ejector pad ejection assembly guarantees smooth ejection after forming, which solves the problem of molten liquid temperature loss at pouring nozzle, optimizes the filling path of molten liquid, and improves the quality and production efficiency of insert forming.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology and relates to a die casting mold for aluminum alloy vehicle handlebar inserts. Background Technology

[0002] Aluminum alloy handlebar inserts are typically formed using die casting. During die casting, the sprue, as a crucial channel for the molten metal to enter the molding cavity, directly affects the fluidity and filling effect of the molten metal due to its temperature stability. Current technologies generally suffer from a lack of effective insulation structures in the sprue, leading to temperature loss and reduced fluidity as the molten metal flows through it. This can result in molding defects such as insufficient filling, cold shuts, and porosity, affecting the structural strength and appearance quality of the insert, while also reducing production efficiency.

[0003] For example, a Chinese patent discloses an aluminum die-casting mold for processing inserts [Application No.: 202110961233.8], including a moving mold device and a fixed mold device. The moving mold device and the fixed mold device close together to form a cavity for processing aluminum alloy die-casting parts with inserts. The aluminum die-casting mold also includes a positioning and ejection device installed on the moving mold device and a reverse ejection assembly installed on the fixed mold device. The positioning and ejection device delivers the insert to the cavity and limits the depth to which the insert penetrates the cavity. The reverse ejection assembly includes two or more ejector pins that extend and retract relative to the surface of the cavity. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a die-casting mold for aluminum alloy handlebar inserts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A die-casting mold for an aluminum alloy handlebar insert includes an upper mold and a lower mold, with a forming cavity formed between the upper and lower molds. A lower forming insert with a lower forming surface forming the forming cavity is embedded in the lower mold. A guide post protrudes from the lower mold, and two arc-shaped guide grooves are symmetrically arranged on the guide post facing the lower forming surface. Two inlet channels are provided on the lower forming insert, each connected to one of the arc-shaped guide grooves. Several oblique side-gating structures are provided between the inlet channels and the lower forming surface. A multi-ejector assembly is provided on the lower forming surface away from the inlet channels, and the multi-ejector assembly is connected to a top plate located on the lower side of the lower mold. A constant-temperature inlet assembly is also provided on the upper mold, corresponding to the guide post.

[0006] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the thermostatic gating assembly includes an inner gating nozzle and a thermostatic cover fitted around the outer side of the inner gating nozzle. The bottom of the inner gating nozzle abuts against a guide column, and an outlet is formed between the inner gating nozzle and the guide column at the end of an arc-shaped guide groove. The upper and lower ends of the thermostatic cover are sealed to the outer surface of the inner gating nozzle, and an external heat-insulating flow channel structure is formed between the inner gating nozzle and the thermostatic cover.

[0007] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the external insulation flow channel structure includes two inwardly recessed external insulation flow channels set on the outer surface of the inner inlet nozzle. The two external insulation flow channels are connected by a vertical connecting flow channel. The constant temperature cover is provided with two external inlet and outlet holes respectively connected to the two external insulation flow channels.

[0008] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the guide column is provided with an internal heat-insulating flow channel structure.

[0009] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the internal insulation flow channel structure includes an internal insulation flow channel vertically arranged inside the guide column and two internal inlet and outlet holes connected to the internal insulation flow channel.

[0010] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the inclined side gating structure includes an inclined gating ramp, the outer end of which is connected to the gating channel and the inner end of which is connected to the bottom of the outer side wall of the lower forming surface.

[0011] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the diameter of the inlet ramp gradually increases from the side closer to the inlet channel to the side closer to the lower forming surface.

[0012] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the multi-ejector assembly includes several straight ejector blocks evenly distributed along the outer side of the lower forming surface, wherein the straight ejector blocks are embedded in the ejector block mounting groove on the lower forming insert.

[0013] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the bottom of the straight push block is connected to the top plate via a straight push rod.

[0014] In the aforementioned die-casting mold for aluminum alloy handlebar inserts, the lower mold is further provided with core rods on both sides, the inner ends of which are inserted into the molding cavity, and the outer ends of the core rods are connected to the core-pulling slider that is slidably disposed on the lower mold.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. The mold uses the arc-shaped guide groove of the guide column to cooperate with the inlet channel and the inclined side inlet structure to achieve orderly flow of molten liquid; the constant temperature inlet assembly insulates the inlet nozzle, and the multi-ejector assembly ensures smooth ejection after molding. This design solves the problem of molten liquid temperature loss at the inlet nozzle, while optimizing the molten liquid filling path and improving the molding quality and production efficiency of inserts.

[0016] 2. The constant temperature pouring assembly adopts an inner pouring nozzle and a constant temperature cover design, which form an outer heat-insulating flow channel structure. The constant temperature cover and the inner pouring nozzle are sealed together. This structure effectively insulates the pouring nozzle, prevents the molten liquid from losing temperature during the pouring process, and ensures that the molten liquid maintains appropriate fluidity. At the same time, the sealing design prevents the leakage of the heat-insulating medium and ensures stable heat-insulating effect.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a structural diagram of the lower template; Figure 4 This is a structural diagram of the front of the constant temperature inlet assembly; Figure 5 This is a schematic diagram of the structure on the back of the constant temperature inlet assembly; Figure 6 This is a schematic diagram of the internal inlet nozzle and the guide column; Figure 7 It is a cross-sectional view of the internal inlet nozzle and the guide column. Detailed Implementation

[0019] like Figures 1-7 As shown, an aluminum alloy handlebar insert die-casting mold includes an upper mold 1 and a lower mold 2. A forming cavity 3 is formed between the upper mold 1 and the lower mold 2. A lower forming insert 5 with a lower forming surface 4 forming the forming cavity 3 is embedded on the lower mold 2. A guide column 6 is protruding from the lower mold 2. Two arc-shaped guide grooves 7 are symmetrically arranged on the side of the guide column 6 facing the lower forming surface 4. Two inlet channels 8 are provided on the lower forming insert 5, which are respectively connected to the arc-shaped guide grooves 7. Several oblique side-inlet structures 9 are provided between the inlet channels 8 and the lower forming surface 4. A multi-ejector assembly is provided on the side of the lower forming surface 4 away from the inlet channels 8. The multi-ejector assembly is connected to a top plate 10 provided on the lower side of the lower mold 2. A constant temperature inlet assembly 11 is also provided on the upper mold 1, which is corresponding to the guide column 6.

[0020] In this invention, the mold uses the arc-shaped guide groove of the guide column to cooperate with the inlet channel and the oblique side inlet structure to achieve orderly flow of molten liquid; the constant temperature inlet assembly insulates the inlet nozzle, and the multi-ejector assembly ensures smooth ejection after molding. This design solves the problem of molten liquid temperature loss at the inlet nozzle, while optimizing the molten liquid filling path and improving the molding quality and production efficiency of inserts.

[0021] Specifically, the constant-temperature gating assembly 11 includes an inner gating nozzle 12 and a constant-temperature cover 13 fitted around the inner gating nozzle 12. The bottom of the inner gating nozzle 12 abuts against the guide column 6, and an outlet 14 is formed between the inner gating nozzle 12 and the guide column 6 at the end of the arc-shaped guide groove 7. The upper and lower ends of the constant-temperature cover 13 are sealed to the outer surface of the inner gating nozzle 12, and an external heat-insulating flow channel structure is formed between the inner gating nozzle 12 and the constant-temperature cover 13. The constant-temperature gating assembly adopts a design where the inner gating nozzle and the constant-temperature cover are fitted together, forming an external heat-insulating flow channel structure. The constant-temperature cover is sealed to the inner gating nozzle. This structure effectively insulates the gating nozzle, preventing the molten liquid from losing temperature during the gating process, ensuring that the molten liquid maintains suitable fluidity, and at the same time, the sealing design prevents leakage of the heat-insulating medium, ensuring stable heat-insulating effect.

[0022] Specifically, the external insulation flow channel structure includes two inwardly recessed external insulation flow channels 15 disposed on the outer surface of the inner inlet nozzle 12. The two external insulation flow channels 15 are connected by a vertical connecting flow channel 16. The constant temperature cover 13 is provided with two external inlet / outlet holes 17 respectively connected to the two external insulation flow channels 15. The external insulation flow channel structure is connected to the vertical connecting flow channel through the two inwardly recessed external insulation flow channels. In conjunction with the external inlet / outlet holes on the constant temperature cover, the insulation medium can circulate within the flow channel. This design increases the contact area between the insulation medium and the inner inlet nozzle, improves the insulation uniformity, solves the problem of poor insulation effect of a single insulation structure, and further ensures the temperature stability at the inlet nozzle.

[0023] Preferably, the guide column 6 is provided with an internal heat-insulating flow channel structure. The internal heat-insulating flow channel structure inside the guide column, together with the external heat-insulating flow channel structure of the constant temperature inlet assembly, forms a double heat insulation. This design insulates the flow path of the molten liquid from inside the guide column, avoids heat loss of the molten liquid during the guiding process, enhances the overall heat insulation effect, and prevents the fluidity of the molten liquid from deteriorating due to temperature drop.

[0024] Specifically, the internal insulation flow channel structure includes an internal insulation flow channel 18 vertically arranged within the guide column 6 and two internal inlet / outlet holes 19 connected to the internal insulation flow channel 18. The internal insulation flow channel structure, with its vertical internal insulation flow channel and two internal inlet / outlet holes, facilitates the circulation of the insulation medium. This design ensures uniform distribution of the insulation medium within the guide column, guaranteeing consistent temperature across all parts of the guide column, preventing localized low temperatures from affecting the flow of the molten liquid, and ensuring that the molten liquid enters the molding cavity in a stable state.

[0025] Specifically, the inclined side-gating structure 9 includes an inclined gating ramp 20, the outer end of which is connected to the gating channel 8 and the inner end of which is connected to the bottom of the outer wall of the lower molding surface 4. The inclined side-gating structure connects the gating channel and the lower molding surface through the inclined gating ramp, allowing the molten liquid to enter the molding cavity in an inclined direction. This design optimizes the filling angle of the molten liquid, avoids molding defects caused by the molten liquid directly impacting the molding cavity wall, and promotes the discharge of gas from the molding cavity, thereby increasing the insert molding density.

[0026] Specifically, the diameter of the inlet ramp 20 gradually increases from the side closer to the inlet runner 8 towards the side closer to the lower molding surface 4. This gradual increase in the inlet ramp diameter ensures a gradual stabilization of the molten liquid flow rate during filling. This design avoids eddies or bubbles caused by sudden changes in molten liquid flow rate, ensuring that the molten liquid evenly fills every corner of the molding cavity and further improving the stability of the insert molding quality.

[0027] Specifically, the multi-ejector assembly includes several straight ejector blocks evenly distributed along the outer side of the lower forming surface 4. These straight ejector blocks are embedded in the ejector block mounting groove 21 on the lower forming insert 5. This design ensures that the ejection force is evenly distributed across the insert, preventing deformation or damage to the insert due to uneven force during ejection. Simultaneously, the ejector block mounting groove positions the straight ejector blocks, ensuring accurate and reliable ejection.

[0028] Specifically, the bottom of the ejector block is connected to the top plate 10 via an ejector rod. The connection between the bottom of the ejector block and the top plate allows the driving force of the top plate to be synchronously transmitted to each ejector block. This structure enables synchronous ejection of multiple ejector blocks, ensuring the insert remains balanced during ejection, preventing insert jamming or damage due to asynchronous ejection, and improving demolding efficiency and yield.

[0029] Specifically, the lower mold 2 is further provided with core rods 22 on both sides, the inner ends of which are inserted into the molding cavity 3. The outer ends of the core rods 22 are connected to the core-pulling sliders 23 slidably disposed on the lower mold 2. The core rods on both sides of the lower mold cooperate with the core-pulling sliders, and the inner ends of the core rods are inserted into the molding cavity. This design facilitates the removal of the core rods by the core-pulling sliders after the insert is formed, solving the problem of demolding difficulties caused by the complex structure of the molding cavity. At the same time, the setting of the core rods can meet the molding requirements of specific shapes of inserts, expanding the applicability of the mold.

[0030] The working principle of this utility model is as follows: the mold cooperates with the arc-shaped guide groove of the guide column, the inlet channel, and the inclined side inlet structure to realize the orderly flow of molten liquid; the constant temperature inlet assembly insulates the inlet nozzle, and the multi-ejector assembly ensures smooth ejection after molding. This design solves the problem of molten liquid temperature loss at the inlet nozzle, while optimizing the molten liquid filling path and improving the molding quality and production efficiency of inserts. The constant temperature inlet assembly adopts an inner inlet nozzle and a constant temperature cover design, forming an outer insulation flow channel structure. The constant temperature cover and the inner inlet nozzle are sealed together. This structure effectively insulates the inlet nozzle, preventing the molten liquid from losing temperature during the inlet process and ensuring that the molten liquid maintains appropriate fluidity. At the same time, the sealing design prevents leakage of the insulation medium and ensures stable insulation effect. The outer insulation flow channel structure is connected to the vertical connecting flow channel through two concave outer insulation flow channels. Together with the outer inlet and outlet holes on the constant temperature cover, the insulation medium can circulate in the flow channel. This design increases the contact area between the insulation medium and the inner inlet nozzle, improves the insulation uniformity, solves the problem of poor insulation effect of a single insulation structure, and further ensures the temperature stability at the inlet nozzle. The guide column is equipped with an internal heat-insulating flow channel structure, which forms a double heat insulation with the external heat-insulating flow channel structure of the constant temperature inlet component. This design insulates the flow path of the molten liquid from inside the guide column, preventing heat loss of the molten liquid during the flow process, enhancing the overall heat insulation effect, and preventing the molten liquid from becoming less fluid due to temperature drop. The internal heat-insulating flow channel structure adopts a vertical internal heat-insulating flow channel and two internal inlet and outlet holes to facilitate the circulation of the heat-insulating medium. This design ensures that the heat-insulating medium is evenly distributed in the guide column, ensuring that the temperature of all parts of the guide column is consistent, avoiding local temperature drops that affect the flow of the molten liquid, and ensuring that the molten liquid enters the molding cavity in a stable state. The inclined side-gating structure connects the gating channel and the lower forming surface through an inclined gating ramp, allowing the molten liquid to enter the forming cavity in an inclined direction. This design optimizes the filling angle of the molten liquid, avoids forming defects caused by the molten liquid directly impacting the forming cavity wall, and promotes the discharge of gas in the forming cavity, thereby increasing the molding density of the insert. The diameter of the gating ramp gradually increases from the side closer to the gating channel to the side closer to the lower forming surface, so that the flow rate of the molten liquid gradually stabilizes during the filling process. This design avoids eddies or bubbles caused by sudden changes in the flow rate of the molten liquid, ensuring that the molten liquid fills all corners of the forming cavity evenly, and further improving the stability of the insert molding quality. The multi-ejector assembly employs several straight ejector blocks evenly distributed along the outer side of the lower molding surface, with each block embedded in an ejector mounting slot. This design ensures even distribution of ejection force across the insert, preventing deformation or damage due to uneven force during ejection. Simultaneously, the ejector mounting slots position the straight ejector blocks, guaranteeing precise and reliable ejection. The bottom of each straight ejector block is connected to the top plate via a straight ejector rod, allowing the driving force of the top plate to be synchronously transmitted to each straight ejector block. This structure enables synchronous ejection of multiple straight ejector blocks, ensuring the insert remains balanced during ejection and preventing jamming or damage caused by asynchronous ejection, thus improving demolding efficiency and yield.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A die-casting mold for an aluminum alloy handlebar insert, comprising an upper mold (1) and a lower mold (2), characterized in that, A molding cavity (3) is formed between the upper mold (1) and the lower mold (2). The lower mold (2) is fitted with a lower molding insert (5) whose upper surface has a lower molding surface (4) that forms the molding cavity (3). A guide column (6) is protruding from the lower mold (2). Two arc-shaped guide grooves (7) are symmetrically arranged on the side of the guide column (6) facing the lower molding surface (4). Two inlet channels (8) are provided on the lower molding insert (5) and are respectively connected to the arc-shaped guide grooves (7). Several oblique side inlet structures (9) are provided between the inlet channels (8) and the lower molding surface (4). A multi-ejector assembly is provided on the side of the lower molding surface (4) away from the inlet channels (8). The multi-ejector assembly is connected to the top plate (10) provided on the lower side of the lower mold (2). The upper mold (1) is also provided with a constant temperature inlet assembly (11) corresponding to the guide column (6).

2. The die-casting mold for aluminum alloy handlebar inserts according to claim 1, characterized in that, The constant temperature inlet assembly (11) includes an inner inlet nozzle (12) and a constant temperature cover (13) sleeved on the outside of the inner inlet nozzle (12). The bottom of the inner inlet nozzle (12) abuts against the guide column (6), and an outlet (14) is formed between the inner inlet nozzle (12) and the guide column (6) at the end of the arc-shaped guide groove (7). The upper and lower ends of the constant temperature cover (13) are sealed to the outer surface of the inner inlet nozzle (12), and an external heat-insulating flow channel structure is formed between the inner inlet nozzle (12) and the constant temperature cover (13).

3. The die-casting mold for aluminum alloy handlebar inserts according to claim 2, characterized in that, The external insulation flow channel structure includes two inwardly recessed external insulation flow channels (15) set on the outer surface of the inner inlet nozzle (12). The two external insulation flow channels (15) are connected by a vertical connecting flow channel (16). The constant temperature cover (13) is provided with two external inlet and outlet holes (17) respectively connected to the two external insulation flow channels (15).

4. The die-casting mold for aluminum alloy handlebar inserts according to claim 3, characterized in that, The guide column (6) is provided with an internal heat-insulating flow channel structure.

5. The die-casting mold for aluminum alloy handlebar inserts according to claim 4, characterized in that, The internal insulation flow channel structure includes an internal insulation flow channel (18) vertically arranged in the guide column (6) and two internal inlet and outlet holes (19) connected to the internal insulation flow channel (18).

6. The die-casting mold for aluminum alloy handlebar inserts according to claim 1, characterized in that, The inclined side pouring structure (9) includes an inclined pouring slope (20), the outer end of which is connected to the pouring channel (8) and the inner end of which is connected to the bottom of the outer wall of the lower forming surface (4).

7. The die-casting mold for aluminum alloy handlebar inserts according to claim 6, characterized in that, The diameter of the inlet ramp (20) gradually increases from the side closer to the inlet channel (8) to the side closer to the lower forming surface (4).

8. The die-casting mold for aluminum alloy handlebar inserts according to claim 1, characterized in that, The multi-top-block ejection assembly includes several straight top blocks evenly distributed along the outer side of the lower molding surface (4), and the straight top blocks are embedded in the top block mounting groove (21) on the lower molding insert (5).

9. The die-casting mold for aluminum alloy handlebar inserts according to claim 8, characterized in that, The bottom of the straight block is connected to the top plate (10) via a straight rod.

10. The die-casting mold for the aluminum alloy handlebar insert according to claim 1, characterized in that, The lower mold (2) is also provided with core rods (22) on both sides, the inner end of which is inserted into the molding cavity (3). The outer end of the core rod (22) is connected to the core-pulling slider (23) that is slidably arranged on the lower mold (2).

Images