Charging gun shell die-casting die capable of being rapidly cooled

Abstract

The utility model belongs to the technical field of die-casting dies, and discloses a charging gun shell die-casting die capable of being cooled quickly, which comprises a base, a lower die holder is fixedly mounted at the upper end of the base, a guide sleeve is mounted at the upper end of the lower die holder in an embedded manner, an upper die holder is arranged above the lower die holder, and a guide column is fixedly mounted on the lower surface of the upper die holder. According to the charging gun shell die-casting die capable of being rapidly cooled, in the cooling aspect, a liquid inlet and a liquid outlet which are reasonably formed in the upper die base are matched with a flow guide cavity in the upper die base and a backflow groove designed in a spiral shape, cooling liquid can be efficiently circulated, the cooling speed is greatly increased through the structure, the forming period is effectively shortened, and the production efficiency is improved. And the production efficiency is improved, and the cooling uniformity is ensured, so that the quality defects of deformation, sink marks and the like caused by non-uniform cooling in the forming process of the charging gun shell are effectively avoided, and the product quality is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, specifically to a fast-cooling die-casting mold for a charging gun housing. Background Technology

[0002] With the booming development of the electric vehicle industry, the demand for charging guns, as key charging equipment, is increasing. The quality and production efficiency of the charging gun shell have a significant impact on the performance and market supply of the entire charging gun. Currently, the charging gun shell is usually produced using die casting technology.

[0003] Traditional die-casting molds present numerous problems in the production of charging gun housings. In terms of cooling, the slow cooling rate leads to long molding cycles and low production efficiency. Due to an unreasonable internal cooling structure design, the coolant cannot circulate efficiently to remove heat, causing the casting to require a long time to cool to a demolding temperature. Furthermore, uneven cooling can easily cause defects such as deformation and shrinkage marks during the molding process, severely affecting product quality. Simultaneously, traditional molds lack a well-designed demolding mechanism, resulting in an unsmooth demolding process that increases the risk of product damage, further reducing production efficiency and yield. These problems limit the efficient and high-quality production of charging gun housings, making it difficult to meet the growing market demand for charging guns. Therefore, developing a die-casting mold for charging gun housings that allows for rapid cooling, smooth demolding, and easy maintenance is of significant practical importance. Utility Model Content

[0004] The purpose of this invention is to provide a fast-cooling die-casting mold for a charging gun housing, in order to solve the problems of slow cooling speed and imperfect demolding mechanism mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fast-cooling die-casting mold for a charging gun housing, comprising a base, a lower mold base fixedly mounted on the upper end of the base, and a guide sleeve embedded in the upper end of the lower mold base, an upper mold base disposed above the lower mold base, and a guide post fixedly mounted on the lower surface of the upper mold base, a lower mold core embedded inside the lower mold base, and a lower mold cavity formed on the upper surface of the lower mold core, an upper mold core embedded inside the upper mold base, and an upper mold cavity formed on the lower surface of the upper mold core, and a pouring hole formed at the upper end of the upper mold base and the upper mold core;

[0006] An electric push rod for unloading is fixedly installed inside the lower surface of the base, and the upper end of the electric push rod for unloading penetrates the upper surface of the base. A top plate is fixedly connected to the upper end of the electric push rod for unloading, and a top rod is fixedly installed on the upper surface of the top plate.

[0007] The upper surface of the upper mold base is fixedly equipped with an inlet and an outlet, and a flow guide cavity is formed inside the upper surface of the upper mold base. A return groove is formed inside the upper mold base between the flow guide cavity and the outlet.

[0008] Preferably, the lower mold core and the upper mold core are both designed as separate parts, and the lower mold core is fixedly connected to the lower mold base through a side pin hole, and the upper mold core is fixedly connected to the upper mold base through a side pin hole.

[0009] By adopting the above technical solution, the mold core is prone to damage due to wear and corrosion during long-term use of the mold. The split design, combined with the side pin hole connection method, allows the mold core to be easily removed and replaced without disassembling the entire mold when it is necessary to repair or replace it. This greatly reduces the difficulty and cost of maintenance, reduces mold maintenance time, and improves production efficiency. In addition, this connection method can also ensure the stability of the mold core during operation, ensuring the dimensional accuracy and quality of the die-cast charging gun shell.

[0010] Preferably, the upper end of the ejector rod penetrates the inner surface of the lower mold cavity, and the ejector rod and the lower mold core are connected by sliding friction.

[0011] Using the above technical solution, after the product is formed, the ejector electric push rod is activated, pushing the ejector plate upward. Since the ejector rod is fixedly connected to the ejector plate and slides against the lower mold core, the ejector rod can move smoothly upward along the lower mold core, pushing the formed charging gun shell out of the lower mold cavity smoothly.

[0012] Preferably, the lower end of the liquid inlet is connected to the guide cavity, and the inner surface of the guide cavity is penetrated by one end of the return groove.

[0013] With the above technical solution, after the coolant enters from the inlet, it can flow smoothly into the guide cavity and return tank. The coolant can flow smoothly into the return tank, which provides a basis for subsequent circulating cooling and ensures that the coolant can flow in an orderly manner in the mold and efficiently remove heat.

[0014] Preferably, one end of the reflux groove is connected to the liquid outlet, and the reflux groove inside the upper mold base on both sides of the upper mold core is designed in a spiral shape.

[0015] By adopting the above technical solution, the spiral reflux groove greatly increases the flow path and contact area of ​​the coolant in the mold. When the coolant flows in the spiral reflux groove, it can more fully absorb the heat of the mold and improve the cooling efficiency. The coolant flows from the guide cavity into the spiral reflux groove, and then flows from the other end of the reflux groove into the outlet to be discharged from the mold, forming an efficient cooling cycle. This design not only speeds up the cooling speed of the charging gun shell and shortens the molding cycle, but also ensures the uniformity of cooling and effectively avoids quality problems such as deformation and shrinkage marks caused by uneven cooling.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the fast-cooling die-casting mold for the charging gun housing:

[0017] 1. In terms of cooling, the reasonable placement of the liquid inlet and outlet on the upper mold base, together with the internal guide cavity and the spiral-shaped return groove, promotes efficient circulation of the coolant. This structure greatly accelerates the cooling speed, which not only effectively shortens the molding cycle and improves production efficiency, but also ensures the uniformity of cooling. This effectively avoids quality defects such as deformation and shrinkage marks caused by uneven cooling during the molding process of the charging gun shell, and significantly improves product quality.

[0018] 2. In the demolding process, the electric ejector rod installed inside the lower surface of the base works in conjunction with the top plate connected to the upper end and the ejector rod fixed on the upper surface of the top plate. After the product is formed, the formed product can be smoothly pushed out. The perfect demolding mechanism greatly reduces the risk of product damage during the demolding process and further improves production efficiency and yield.

[0019] 3. Both the lower mold core and the upper mold core adopt a split design. The lower mold core is fixedly connected to the lower mold base through a side pin hole, and the upper mold core is fixedly connected to the upper mold base through a side pin hole. When the mold core is worn or damaged, this design allows for easy disassembly and replacement, greatly reducing maintenance difficulty and cost. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the connection between the lower mold base and the lower mold core of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the connection between the upper mold base and the guide column of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the overall mold-opening state of this utility model.

[0024] Figure 5This is a three-dimensional structural diagram of the cross-sectional view of the electric push rod for unloading, the top plate, and the top rod connection of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the upper mold base and the return channel of this utility model.

[0026] In the diagram: 1. Base; 2. Lower mold base; 3. Guide sleeve; 4. Upper mold base; 5. Guide post; 6. Lower mold core; 7. Lower mold cavity; 8. Upper mold core; 9. Upper mold cavity; 10. Sprue hole; 11. Electric ejector rod; 12. Ejector plate; 13. Ejector rod; 14. Liquid inlet; 15. Liquid outlet; 16. Flow guide cavity; 17. Return channel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-6 This utility model provides a technical solution: a die-casting mold for a charging gun housing that can be cooled quickly.

[0029] Example 1

[0030] This embodiment discloses: a base 1, a lower mold base 2 fixedly installed on the upper end of the base 1, and a guide sleeve 3 embedded in the upper end of the lower mold base 2, an upper mold base 4 provided above the lower mold base 2, and a guide post 5 fixedly installed on the lower surface of the upper mold base 4, a lower mold core 6 embedded in the lower mold base 2, and a lower mold cavity 7 opened on the upper surface of the lower mold core 6, an upper mold core 8 embedded in the upper mold base 4, and an upper mold cavity 9 opened on the lower surface of the upper mold core 8, and a casting hole 10 opened at the upper end of the upper mold base 4 and the upper mold core 8;

[0031] Both the lower mold core 6 and the upper mold core 8 are separate designs. The lower mold core 6 is fixedly connected to the lower mold base 2 through a side pin hole, and the upper mold core 8 is fixedly connected to the upper mold base 4 through a side pin hole.

[0032] At the start of die casting, the upper mold base 4 moves downward with the guide column 5 driven by the hydraulic mechanism. The guide column 5 inserts into the guide sleeve 3 on the lower mold base 2 at the upper end of the base 1, precisely guiding the upper mold base 4 and the lower mold base 2 to close, ensuring that the upper mold cavity 9 and the lower mold cavity 7 are precisely aligned. Then, liquid metal is injected into the mold through the sprue hole 10. The split design of the lower mold core 6 and the upper mold core 8 is firmly connected to the lower mold base 2 and the upper mold base 4 respectively by means of the side pin holes. This not only facilitates the replacement of the mold core when it is worn or damaged, but also ensures the stability of the mold core during the die casting process, allowing the liquid metal to be formed smoothly in the mold cavity, laying the foundation for subsequent cooling and demolding.

[0033] Example 2

[0034] This embodiment discloses, based on embodiment one: a material removal electric push rod 11 is fixedly installed inside the lower surface of the base 1, and the upper end of the material removal electric push rod 11 penetrates the upper surface of the base 1, and a top plate 12 is fixedly connected to the upper end of the material removal electric push rod 11, and a top rod 13 is fixedly provided on the upper surface of the top plate 12.

[0035] The upper end of the ejector rod 13 penetrates the inner surface of the lower mold cavity 7, and the ejector rod 13 and the lower mold core 6 are connected by sliding friction.

[0036] After the charging gun housing is formed in the mold and the lower mold base 2 separates from the upper mold base 4, the ejector electric push rod 11 is activated. It pushes the ejector plate 12 upward. Since the ejector rod 13 is fixed on the ejector plate 12 and its upper end penetrates the inner surface of the lower mold cavity 7 and is slidably frictionally connected with the lower mold core 6, the ejector rod 13 rises synchronously as the ejector plate 12 rises, smoothly pushing the formed charging gun housing out of the lower mold cavity 7 and completing the demolding action. This demolding method relies on the stable power of the electric push rod, combined with the coordinated operation of the ejector plate 12 and the ejector rod 13, which greatly reduces the risk of damage to the product due to uneven force during the demolding process, and improves production efficiency and product yield.

[0037] Example 3

[0038] This embodiment discloses, based on Embodiment 1 and Embodiment 2, that: an inlet 14 and an outlet 15 are fixedly installed on the upper surface of the upper mold base 4, and a flow guide cavity 16 is provided inside the upper surface of the upper mold base 4, and a return groove 17 is provided inside the upper mold base 4 between the flow guide cavity 16 and the outlet 15.

[0039] The lower end of the liquid inlet 14 is connected to the guide cavity 16, and the inner surface of the guide cavity 16 is penetrated by one end of the return groove 17.

[0040] One end of the reflux groove 17 is connected to the liquid outlet 15, and the reflux groove 17 inside the upper mold base 4 on both sides of the upper mold core 8 is designed in a spiral shape.

[0041] Coolant is injected through inlet 14 and flows into guide cavity 16. Since the inner surface of guide cavity 16 is penetrated by one end of spiral return groove 17 and the other end of return groove 17 is connected to outlet 15, coolant will circulate in guide cavity 16 and spiral return groove 17. The spiral return groove 17 design increases the contact area and contact time between coolant and mold, enabling coolant to absorb heat in mold more efficiently and accelerate cooling. Coolant carries heat and flows out from outlet 15, achieving efficient cooling. This cooling process not only shortens the molding cycle of charging gun shell and improves production efficiency, but also ensures uniform cooling of all parts of mold, effectively avoiding quality defects such as deformation and shrinkage marks caused by uneven cooling during the molding process of charging gun shell.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast-cooling die-casting mold for a charging gun housing, comprising a base (1), wherein a lower mold base (2) is fixedly mounted on the upper end of the base (1), and a guide sleeve (3) is embedded in the upper end of the lower mold base (2); an upper mold base (4) is disposed above the lower mold base (2), and a guide post (5) is fixedly mounted on the lower surface of the upper mold base (4), characterized in that: The lower mold base (2) has a lower mold core (6) embedded inside, and the upper surface of the lower mold core (6) has a lower mold cavity (7). The upper mold base (4) has an upper mold core (8) embedded inside, and the lower surface of the upper mold core (8) has an upper mold cavity (9). The upper ends of the upper mold base (4) and the upper mold core (8) have sprue holes (10).

2. A rapid-cooling charging gun shell die-casting mold according to claim 1, characterized in that: A material ejector electric push rod (11) is fixedly installed inside the lower surface of the base (1), and the upper end of the material ejector electric push rod (11) penetrates the upper surface of the base (1). A top plate (12) is fixedly connected to the upper end of the material ejector electric push rod (11), and a top rod (13) is fixedly installed on the upper surface of the top plate (12).

3. A rapid-cooling charging gun shell die-casting mold according to claim 1, characterized in that: The upper surface of the upper mold base (4) is fixedly equipped with an inlet (14) and an outlet (15), and a flow guide cavity (16) is opened inside the upper surface of the upper mold base (4), and a return groove (17) is opened inside the upper mold base (4) between the flow guide cavity (16) and the outlet (15).

4. A rapid-cooling charging gun shell die-casting mold according to claim 1, characterized in that: The lower mold core (6) and the upper mold core (8) are both designed as separate parts. The lower mold core (6) is fixedly connected to the lower mold base (2) through a side pin hole, and the upper mold core (8) is fixedly connected to the upper mold base (4) through a side pin hole.

5. A rapid-cooling charging gun housing die-casting mold according to claim 2, characterized in that: The upper end of the ejector rod (13) penetrates the inner surface of the lower mold cavity (7), and the ejector rod (13) and the lower mold core (6) are connected by sliding friction.

6. A rapid-cooling charging gun shell die-casting mold according to claim 3, characterized in that: The lower end of the inlet (14) is connected to the guide cavity (16), and the inner surface of the guide cavity (16) is penetrated by one end of the return groove (17).

7. A rapid-cooling charging gun shell die-casting mold according to claim 3, characterized in that: One end of the reflux groove (17) is connected to the liquid outlet (15), and the reflux groove (17) inside the upper mold base (4) on both sides of the upper mold core (8) is designed in a spiral shape.

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