Die-casting die for automobile lamp shell

Abstract

The utility model discloses an automobile lamp shell die-casting die, and belongs to the technical field of automobile die-casting. Comprising a base, a die-casting groove is formed in the upper surface of the base, sliding columns are symmetrically and fixedly connected to the positions, located on the two sides of the die-casting groove, of the upper surface of the base, and a top plate is jointly and fixedly connected to the top ends of the sliding columns; according to the automobile lamp shell die-casting die, a unique cooling structure is designed, and the production efficiency is remarkably improved. In the die-casting process, when the die-casting upper cover and the die-casting groove are closed, the air outlet cavity is accurately aligned with the circular cavity. The refrigerator is started, and blown cold air enters the air outlet cavity through the air pipe. When the die-casting upper cover is pressed downwards, the hollow column with the hole is extruded, the square plate is pushed to open the air blocking plate, and cold air can be evenly blown to molten materials in the die-casting groove through the air outlet cavity and the air outlet holes. The process greatly accelerates the cooling and solidification speed of the material, and compared with natural cooling of a traditional mold, the forming period can be greatly shortened, and the yield in unit time is increased.

Description

Technical Field

[0001] This utility model relates to automotive die casting technology, and more particularly to a die casting mold for automotive headlight housings. Background Technology

[0002] In the automotive manufacturing industry, automotive lights are a crucial component of vehicles, and the production quality and efficiency of their housings are paramount. Traditional die-casting molds for automotive light housings have revealed numerous problems in actual production. From a cooling perspective, early molds often employed natural cooling or simple air cooling, resulting in slow cooling rates and long molding cycles. This not only limited production efficiency but also led to uneven cooling, causing defects such as shrinkage deformation and internal stress concentration, severely impacting the dimensional accuracy and appearance quality of the light housings, increasing the defect rate, and raising production costs. Regarding demolding, previous methods either relied heavily on manual labor, resulting in high labor intensity and low efficiency, and were prone to product damage due to human error; or employed complex demolding mechanisms requiring specialized demolding equipment, which not only increased equipment purchase costs but also occupied significant production space, complicating the overall mold structure and increasing maintenance difficulty.

[0003] With the rapid development of the automotive industry, the demand for automotive headlight housings continues to grow, while consumers' requirements for product quality are also increasing. Against this backdrop, it is imperative to develop a new type of die-casting mold for automotive headlight housings that can improve cooling efficiency, optimize the demolding process, thereby enhancing production efficiency and product quality while reducing costs. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a high-efficiency cooling system for the shell, so as to accelerate the die casting process; another purpose of this utility model is to provide a convenient demolding structure to assist production operations.

[0005] Technical solution: A die-casting mold for automotive headlight housing, comprising a base, a die-casting groove on the upper surface of the base, sliding columns symmetrically fixedly connected to both sides of the die-casting groove on the upper surface of the base, a top plate fixedly connected to the top of the sliding columns, perforated sliders slidably connected to the outer walls of the sliding columns, a die-casting top cover fixedly connected to the opposite sides of the perforated sliders, a telescopic cavity fixedly connected to the upper surface of the top plate, a hydraulic pump fixedly connected to the upper surface of the telescopic cavity, and the output end of the hydraulic pump fixedly communicating with the telescopic cavity.

[0006] Furthermore, a sliding plate is slidably connected inside the telescopic cavity, and a vertical block is fixedly connected to the lower surface of the sliding plate. The bottom end of the vertical block penetrates the top plate and is fixedly connected to the upper surface of the die-cast cover.

[0007] Furthermore, the upper surface of the die-casting tank is symmetrically provided with circular cavities, and the inner walls of two adjacent circular cavities are fixedly connected to air outlet cavities, and the inner walls of the air outlet cavities are provided with multiple air outlet holes.

[0008] Furthermore: a cooling chamber is provided inside the die-cast top cover, and a refrigeration unit is fixedly connected to the upper surface of the cooling chamber. Multiple air outlet chambers are symmetrically provided on the lower surface of the die-cast top cover. The refrigeration unit and the air outlet chambers are fixedly connected through air pipes. A square plate is slidably connected inside the air outlet chamber. A baffle plate is symmetrically fixedly connected inside the square plate. A vertical plate is fixedly connected to the upper surface of the square plate. A spring groove is provided inside the upper surface of the air outlet chamber. A spring plate is slidably connected inside the spring groove. A spring is fixedly connected between the upper surface of the spring plate and the upper surface of the spring groove. The top of the vertical plate extends into the interior of the spring groove and is fixedly connected to the lower surface of the spring plate.

[0009] Furthermore, a sliding cavity is provided below the air outlet cavity, and a hollow column with holes is slidably connected inside the sliding cavity. A limiting plate is fixedly connected to the outer wall of the hollow column with holes inside the sliding cavity, and the limiting plate is slidably connected to the inside of the sliding cavity.

[0010] Furthermore, a transverse groove is provided on the right side of the die-casting tank, and a transverse long plate is slidably connected inside the transverse groove. An extrusion chamber is provided on the inner upper surface of the transverse long plate. An ejection groove is fixedly connected to the inner upper surface of the die-casting tank. The extrusion chamber is fixedly connected to the ejection groove. Telescopic long rods are symmetrically fixedly connected to the upper surface of the transverse long plate. The top ends of the opposite sides of the telescopic long rods are fixedly connected to the outer wall of the die-casting tank. An extrusion block is fixedly connected to the upper surface of the transverse long plate. The top end of the extrusion block penetrates into the interior of the extrusion chamber and is fixedly connected to an extrusion arc plate.

[0011] Furthermore, a soft top is fixedly connected to the inner wall of the ejector groove.

[0012] Beneficial Effects: This automotive headlight housing die-casting mold features a unique cooling structure that significantly improves production efficiency. During the die-casting process, when the die-casting cover closes with the die-casting tank, the venting chamber and the circular cavity are precisely aligned. The refrigeration unit starts, and the cold air blown out enters the venting chamber through the air pipe. As the die-casting cover is pressed down, the perforated hollow column is squeezed, pushing the square plate to open the baffle plate. Cold air can then be evenly blown into the molten material in the die-casting tank through the venting chamber and vent holes. This process greatly accelerates the cooling and solidification speed of the material. Compared with the natural cooling of traditional molds, it can significantly shorten the molding cycle and increase the output per unit time. Moreover, the continuous supply of cold air ensures that the material is cooled evenly in all parts, avoiding product defects caused by uneven cooling and improving the stability of product quality. After the material is formed, as the die-casting cover rises, the relevant components reset, and the baffle plate closes. The entire cooling system is rationally designed, easy to operate, and effectively meets the needs of high-efficiency production of high-quality automotive headlight housings.

[0013] The mold's demolding structure is ingeniously designed, greatly facilitating the production process. After the material cools and solidifies, the die-casting cover rises to open the mold. Demolding is easily achieved simply by pushing the horizontal platen through the horizontal groove. During the upward movement of the horizontal platen, the extrusion block drives the extrusion arc plate to extrude air upwards within the extrusion chamber. Since the extrusion chamber is connected to the ejection groove, the pressurized air acts on the soft top through the ejection groove. Under air pressure, the soft top is ejected upwards, precisely lifting the formed automotive headlight housing from the die-casting groove, making the demolding process easy and simple. The telescopic rod plays a stabilizing and limiting role during the movement of the horizontal platen, ensuring smooth movement and preventing jamming or deviation, thus guaranteeing the stability and reliability of demolding. This demolding structure eliminates the need for complex manual operations or additional demolding equipment, reducing labor costs and equipment investment while improving demolding efficiency. It allows workers to quickly remove the finished product, saving time for subsequent production processes and significantly promoting the high efficiency of the entire production process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural schematic diagram of the die-casting tank of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the die-cast top cover of this utility model;

[0017] Figure 4 This is a utility model Figure 4 A magnified structural diagram at point A;

[0018] Figure 5 This is a cross-sectional structural schematic diagram of the telescopic cavity of this utility model.

[0019] In the diagram: 1. Base; 2. Die-casting groove; 3. Sliding column; 6. Top plate; 4. Perforated slider; 5. Die-casting top cover; 7. Telescopic cavity; 8. Hydraulic pump; 9. Sliding plate; 10. Vertical block; 11. Circular cavity; 12. Air outlet cavity; 13. Air outlet hole; 14. Cooling cavity; 15. Refrigeration unit; 16. Air outlet cavity; 17. Square plate; 18. Air baffle plate; 19. Vertical plate; 20. Spring groove; 21. Spring plate; 22. Spring; 23. Sliding cavity; 24. Hollow column with perforation; 25. Limiting plate; 26. Horizontal groove; 27. Extrusion cavity; 28. Top outlet groove; 29. ​​Telescopic rod; 30. Soft top; 31. Horizontal long plate; 32. Extrusion block; 33. Extrusion arc plate. Detailed Implementation

[0020] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example

[0022] like Figures 1-5 As shown, a die-casting mold for an automotive headlight housing is provided, including a base 1. A die-casting groove 2 is provided on the upper surface of the base 1. Sliding columns 3 are symmetrically fixedly connected to both sides of the die-casting groove 2 on the upper surface of the base 1. A top plate 6 is fixedly connected to the top of the sliding columns 3. A perforated slider 4 is slidably connected to the outer side of each sliding column 3. A die-casting top cover 5 is fixedly connected to the opposite side of the perforated slider 4. A telescopic cavity 7 is fixedly connected to the upper surface of the top plate 6. A hydraulic pump 8 is fixedly connected to the upper surface of the telescopic cavity 7. The output end of the hydraulic pump 8 is fixedly connected to the telescopic cavity 7. A sliding plate 9 is slidably connected inside the telescopic cavity 7. A vertical block 10 is fixedly connected to the lower surface of the sliding plate 9. The bottom end of the vertical block 10 penetrates the top plate 6 and is fixedly connected to the upper surface of the die-casting top cover 5.

[0023] When starting the die-casting mold for the automotive headlight housing, molten die-casting material is injected into the die-casting tank 2, and the hydraulic pump 8 is turned on. The hydraulic pump 8 operates, injecting hydraulic oil into the telescopic cavity 7, increasing the pressure within the cavity. Under this pressure, the sliding plate 9 slides downwards within the telescopic cavity 7, causing the connected vertical block 10 to move downwards. The bottom end of the vertical block 10 is fixed to the die-casting cover 5, thus pushing the cover 5 downwards along the sliding column 3. At this time, the cover 5 gradually approaches the die-casting tank 2 on the base 1 until they are completely closed, completing the mold closing action. The hydraulic pump 8 continues to operate, maintaining the pressure within the telescopic cavity 7, ensuring that the cover 5 maintains a certain pressure on the material in the die-casting tank 2, ensuring that the material fills the various fine structures of the tank under pressure, while simultaneously cooling and solidifying. After the material cools and solidifies, the hydraulic pump 8 reverses to extract the hydraulic oil from the telescopic cavity 7, reducing the pressure. The sliding plate 9 then moves the vertical block 10 upward, causing the die-casting cover 5 to rise along the sliding column 3. The mold is then opened, and the workers can remove the formed car headlight housing.

[0024] In this embodiment, the upper surface of the die-casting tank 2 is symmetrically provided with circular cavities 11. The inner sidewalls of two adjacent circular cavities 11 are fixedly connected to air outlet cavities 12. The inner sidewalls of the air outlet cavities 12 are provided with multiple air outlet holes 13. The interior of the die-casting cover 5 is provided with a cooling cavity 14. The upper surface of the cooling cavity 14 is fixedly connected to a refrigeration unit 15. The lower surface of the die-casting cover 5 is symmetrically provided with multiple air outlet cavities 16. The refrigeration unit 15 and the air outlet cavities 16 are fixedly connected through air pipes. The interior of the air outlet cavities 16 is slidably connected with a square plate 17. The interior of the square plate 17 is symmetrically fixedly connected with baffle plates 18. The upper surface of the square plate 17 is... A vertical plate 19 is fixedly connected to the surface of the air outlet chamber 16. A spring groove 20 is opened on the upper surface of the air outlet chamber 16. A spring plate 21 is slidably connected inside the spring groove 20. A spring 22 is fixedly connected between the upper surface of the spring plate 21 and the upper surface of the spring groove 20. The top of the vertical plate 19 extends into the interior of the spring groove 20 and is fixedly connected to the lower surface of the spring plate 21. A sliding cavity 23 is opened below the air outlet chamber 16. A hollow column 24 with holes is slidably connected inside the sliding cavity 23. A limiting plate 25 is fixedly connected to the outer wall of the hollow column 24 inside the sliding cavity 23. The limiting plate 25 is slidably connected to the interior of the sliding cavity 23.

[0025] Hydraulic pump 8 operates, injecting hydraulic oil into telescopic chamber 7, pushing sliding plate 9 and vertical block 10, causing die-casting cover 5 to descend along sliding column 3 and close with die-casting groove 2 on base 1. At this time, the air outlet 16 on the lower surface of die-casting cover 5 aligns with the circular cavity 11 on die-casting groove 2. Refrigeration unit 15 starts, supplying cold air to air outlet 16. As die-casting cover 5 is pressed down, the perforated hollow column 24 is squeezed upward, pushing square plate 17 and opening air baffle 18, allowing cold air to blow into die-casting groove 2 through air outlet 12 and air outlet 13. Simultaneously, refrigeration unit 15 continues cooling, and the blown cold air accelerates material cooling and solidification. After the material cools and solidifies, hydraulic pump 8 reverses, and die-casting cover 5 rises. At this time, perforated hollow column 24 resets under the action of limit plate 25, square plate 17 falls back under the action of spring 22, air baffle 18 closes, and workers can then remove the formed automotive headlight housing.

[0026] In this embodiment, a transverse groove 26 is provided on the right side of the die-casting tank 2. A transverse long plate 31 is slidably connected inside the transverse groove 26. An extrusion chamber 27 is provided on the upper surface of the transverse long plate 31. An ejection groove 28 is fixedly connected to the upper surface of the die-casting tank 2. The extrusion chamber 27 and the ejection groove 28 are fixedly connected. Telescopic long rods 29 are symmetrically fixedly connected to the upper surface of the transverse long plate 31. The top ends of the telescopic long rods 29 on opposite sides are fixedly connected to the outer wall of the die-casting tank 2. An extrusion block 32 is fixedly connected to the upper surface of the transverse long plate 31. The top end of the extrusion block 32 penetrates into the interior of the extrusion chamber 27 and is fixedly connected to an extrusion arc plate 33. A soft top 30 is fixedly connected to the inner wall of the ejection groove 28.

[0027] After the material cools and solidifies, the hydraulic pump 8 reverses, and the die-casting cover 5 rises to open the mold. At this time, the horizontal plate 31 is pushed to slide within the horizontal groove 26. During the upward movement of the horizontal plate 31, the extrusion block 32 drives the air extrusion arc plate 33 to extrude air upward within the air extrusion chamber 27. Since the air extrusion chamber 27 is connected to the ejection groove 28, the compressed air acts on the soft top 30 through the ejection groove 28. The soft top 30 is ejected upward under air pressure, lifting the formed car headlight housing from the die-casting groove 2. The telescopic rod 29 plays a stabilizing and limiting role during the movement of the horizontal plate 31, ensuring smooth movement of the horizontal plate 31 and ultimately assisting in demolding, making it convenient for workers to remove the finished product.

[0028] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An automotive lamp housing die-casting mould comprising a base (1), characterised in that: The upper surface of the base (1) is provided with a die-casting groove (2). On the upper surface of the base (1), sliding columns (3) are symmetrically fixedly connected on both sides of the die-casting groove (2). The top of the sliding columns (3) is fixedly connected to a top plate (6). The outer walls of the sliding columns (3) are slidably connected to perforated sliders (4). The opposite sides of the perforated sliders (4) are fixedly connected to a die-casting top cover (5). The upper surface of the top plate (6) is fixedly connected to a telescopic cavity (7). The upper surface of the telescopic cavity (7) is fixedly connected to a hydraulic pump (8). The output end of the hydraulic pump (8) is fixedly connected to the telescopic cavity (7).

2. An automotive lamp housing die-casting mold according to claim 1, characterized in that: The telescopic cavity (7) is slidably connected to a sliding plate (9), and a vertical block (10) is fixedly connected to the lower surface of the sliding plate (9). The bottom end of the vertical block (10) penetrates the top plate (6) and is fixedly connected to the upper surface of the die-cast cover (5).

3. The die casting mold for an automobile lamp housing according to claim 1, wherein: The upper surface of the die-casting tank (2) is symmetrically provided with circular cavities (11), and the inner walls of two adjacent circular cavities (11) are fixedly connected to air outlet cavities (12), and the inner walls of the air outlet cavities (12) are provided with multiple air outlet holes (13).

4. The die casting mold for an automobile lamp housing according to claim 1, wherein: The die-cast cover (5) has a cooling chamber (14) inside. A refrigeration unit (15) is fixedly connected to the upper surface of the cooling chamber (14). Multiple air outlet chambers (16) are symmetrically opened on the lower surface of the die-cast cover (5). The refrigeration unit (15) and the air outlet chambers (16) are fixedly connected through air pipes. A square plate (17) is slidably connected inside the air outlet chamber (16). A baffle plate (18) is symmetrically fixedly connected inside the square plate (17). A vertical plate (19) is fixedly connected to the upper surface of the square plate (17). A spring groove (20) is opened on the upper surface of the air outlet chamber (16). A spring plate (21) is slidably connected inside the spring groove (20). A spring (22) is fixedly connected between the upper surface of the spring plate (21) and the upper surface of the spring groove (20). The top of the vertical plate (19) extends into the interior of the spring groove (20) and is fixedly connected to the lower surface of the spring plate (21).

5. An automotive lamp housing die-casting mold according to claim 4, characterized in that: A sliding cavity (23) is provided below the air outlet cavity (16). A hollow column (24) with holes is slidably connected inside the sliding cavity (23). A limiting plate (25) is fixedly connected to the outer wall of the hollow column (24) inside the sliding cavity (23). The limiting plate (25) is slidably connected to the inside of the sliding cavity (23).

6. An automotive lamp housing die-casting mold according to claim 1, characterized in that: A transverse groove (26) is provided on the right side of the die-casting tank (2). A transverse long plate (31) is slidably connected inside the transverse groove (26). An extrusion chamber (27) is provided on the upper surface of the transverse long plate (31). An ejection groove (28) is fixedly connected to the upper surface of the die-casting tank (2). The extrusion chamber (27) is fixedly connected to the ejection groove (28). A telescopic long rod (29) is symmetrically fixedly connected to the upper surface of the transverse long plate (31). The top ends of the telescopic long rod (29) on opposite sides are fixedly connected to the outer wall of the die-casting tank (2). An extrusion block (32) is fixedly connected to the upper surface of the transverse long plate (31). The top end of the extrusion block (32) penetrates into the interior of the extrusion chamber (27) and is fixedly connected to an extrusion arc plate (33).

7. An automotive lamp housing die-casting mold according to claim 6, characterized in that: The inner wall of the top outlet groove (28) is fixedly connected to a soft top (30).

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