Injection mold for automobile back lamp cover

Abstract

The utility model discloses an automobile reversing lamp face shield injection mold, including base, the centre fixed mounting of lower mould seat is established in the centre of base top, the four sides of base top all are fixedly connected with support rod, and the sliding connection of the position of top position between four support rods has the lifting plate, the centre fixed mounting of upper mould seat is established in the lifting plate bottom, and the lower mould cavity is established in the centre of lower mould seat top. This automobile reversing lamp face shield injection mold, through setting up heat conduction plate no.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for an automotive reversing light cover. Background Technology

[0002] In the automotive manufacturing industry, the injection molding of reversing light covers is a crucial step. As the core equipment in this process, the performance of the injection mold directly affects product quality and production efficiency.

[0003] During injection molding, a large amount of heat is generated inside the mold due to the melting and solidification of the plastic. Traditional injection mold designs often lack efficient heat dissipation systems, causing heat to accumulate inside the mold, especially in the contact area between the lower and upper mold bases. This heat accumulation not only causes mold deformation, affecting the precision and dimensional stability of the product, but also accelerates the thermal fatigue of the mold material, shortening the mold's service life. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold for automotive reversing light covers, addressing the issue mentioned in the background art where a large amount of heat is generated inside the mold during the injection molding process due to the melting and solidification of plastic. Traditional injection mold designs often lack efficient heat dissipation systems, leading to heat accumulation inside the mold, especially in the contact area between the lower and upper mold bases. This heat accumulation not only causes mold deformation, affecting product precision and dimensional stability, but also accelerates thermal fatigue of the mold material, shortening the mold's service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for an automotive reversing light cover, comprising a base, a lower mold base fixedly installed at the center of the top of the base, support rods fixedly connected to the four sides of the top of the base, a lifting plate slidably connected between the four support rods near the top, an upper mold base fixedly installed at the center of the bottom of the lifting plate, a lower mold cavity opened at the center of the top of the lower mold base, a groove opened near the bottom of the upper mold base, a heat dissipation plate arranged inside the groove, a heat-conducting plate one fixedly connected to the bottom of the lower mold cavity, heat-conducting plates two fixedly connected to both sides of the top of the heat dissipation plate, and a plurality of heat dissipation strips fixedly connected to one side of the heat-conducting plate two extending to the outside of the lower mold base.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This automotive reversing light cover injection mold utilizes a heat-conducting plate (plate 1) on the top of the lower mold base, connected to a heat sink via a heat-conducting rod, forming an efficient heat conduction path. Heat is rapidly transferred from the lower mold cavity to the heat sink, and then diffused to the outside of the mold via heat-conducting plate 2 and heat sink strips. This effectively reduces the internal temperature of the mold. The heat sink strip design increases the heat dissipation area and improves heat dissipation efficiency, ensuring the mold maintains a low operating temperature during injection molding, thereby reducing the risk of mold deformation and thermal fatigue. An induced draft fan is introduced as an active cooling device, drawing heat from inside the mold through heat absorption pipes and air inlet pipes, and dissipating it through exhaust fans. The forced air cooling method, where heat is discharged outside the mold, greatly accelerates the heat dissipation speed and further reduces the mold temperature. The filter design inside the heat absorption pipe not only prevents dust and other impurities from entering the mold but also increases the heat exchange area between the air and the mold, improving the heat dissipation effect. The ingenious design of the heat sink and heat conduction rod ensures the uniform distribution and rapid conduction of heat inside the mold. At the same time, the addition of the insulating rod ensures the stable installation of the heat sink and avoids the influence of current on the heat dissipation effect. The ventilation net provides good ventilation for the mold, further improving the uniformity and efficiency of heat dissipation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This utility model Figure 1 A magnified view of part A in the diagram;

[0010] Figure 3 This utility model Figure 1 A magnified view of part B in the diagram;

[0011] Figure 4 This is a three-dimensional structural view of the lower mold base of this utility model;

[0012] Figure 5 This is the main view of the structure of this utility model.

[0013] In the diagram: 1. Base; 2. Lower mold base; 3. Support rod; 4. Top plate; 5. Lifting plate; 6. Cylinder; 7. Upper mold base; 8. Lower mold cavity; 9. Groove; 10. Heat-conducting plate one; 11. Heat dissipation plate; 12. Insulating rod; 13. Heat-conducting rod; 14. Heat-conducting plate two; 15. Heat dissipation strip; 16. Insulating plate; 17. Air inlet pipe; 18. Exhaust fan; 19. Heat absorption pipe; 20. Filter screen; 21. Air outlet pipe; 22. Ventilation net. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-5 This utility model provides a technical solution: an injection mold for a car reversing light cover, including a base 1, a lower mold base 2 fixedly installed at the center of the top of the base 1, support rods 3 fixedly connected to the four sides of the top of the base 1, a lifting plate 5 slidably connected between the four support rods 3 at the top position, an upper mold base 7 fixedly installed at the center of the bottom of the lifting plate 5, a lower mold cavity 8 opened at the center of the top of the lower mold base 2, a groove 9 opened at the bottom position inside the upper mold base 7, a heat dissipation plate 11 arranged inside the groove 9, a heat conduction plate 10 fixedly connected to the bottom inside the lower mold cavity 8, a heat conduction plate 14 fixedly connected to both sides of the top of the heat dissipation plate 11, one side of the heat conduction plate 14 extends through to the outside of the lower mold base 2 and is fixedly connected to several heat dissipation strips 15.

[0016] Several heat-conducting rods 13 are fixedly connected to the bottom of the heat-conducting plate 10. The bottom of the heat-conducting rods 13 penetrates into the interior of the groove 9 and is fixedly connected to the top of the heat sink 11.

[0017] An insulating rod 12 is fixedly connected to the bottom of the heat sink 11, and the bottom of the insulating rod 12 is fixedly connected to the bottom of the groove 9.

[0018] A ventilation mesh 22 is fixedly installed on the front surface of the lower mold base 2, corresponding to the front side of the groove 9.

[0019] Insulating plates 16 are fixedly connected to the bottom positions on both sides of the lower mold base 2. A blower 18 is fixedly installed on the side of the insulating plate 16 away from the lower mold base 2. An air outlet pipe 21 is connected to one side of the blower 18.

[0020] Both sides of the groove 9 are connected to the air inlet pipe 17, and the other side of the blower 18 is connected to the heat absorption pipe 19. One side of the heat absorption pipe 19 is connected to the air inlet pipe 17, and a filter screen 20 is fixedly installed in the center of the heat absorption pipe 19.

[0021] A top plate 4 is fixedly connected to the top of the four support rods 3. A cylinder 6 is fixedly installed at the center of the top of the top plate 4. The output end of the cylinder 6 extends through to the bottom of the top plate 4 and is fixedly connected to the top of the lifting plate 5.

[0022] Working principle: Before injection molding, cylinder 6 is in a retracted state. Its bottom output end drives the lifting plate 5 and the upper mold base 7 fixed below it to rise, so that the upper mold base 7 separates from the lower mold base 2, providing space for the injection of the injection material. After injection molding is completed, cylinder 6 extends, pushing the lifting plate 5 and the upper mold base 7 to fall, so that the upper mold base 7 and the lower mold base 2 fit tightly together, completing the mold closing action, providing pressure for the cooling and solidification of the product. After the mold is closed, the injection molding machine injects the molten plastic material into the lower mold cavity 8. The plastic material cools and solidifies in the lower mold cavity 8, forming the preliminary shape of the reversing light cover. As the injection molding process proceeds, a large amount of heat will be generated inside the mold. At this time, the heat dissipation system starts to work. The heat is first transferred to the heat conduction rod 13 through the heat conduction plate 10, and then the heat conduction rod 13 transfers the heat to the heat dissipation plate 11. The heat sink 11, as the main heat dissipation component, effectively absorbs and disperses the heat inside the mold. The heat conduction plate 14 on the heat sink 11 further transfers the heat to the heat dissipation strip 15. The heat dissipation strip 15 accelerates the heat dissipation by increasing the heat dissipation area. At the same time, the blower 18 starts, drawing in hot air from inside the mold through the heat absorption pipe 19 and the air inlet pipe 17. After being filtered by the filter screen 20, the hot air is discharged outside the mold through the air outlet pipe 21. This forced air cooling process greatly accelerates the heat dissipation speed. In order to further improve the heat dissipation efficiency, a ventilation net 22 is provided on the front side of the lower mold base 2. The ventilation net 22 allows the outside air to circulate freely, providing more heat dissipation channels for the mold and helping to accelerate the heat dissipation. After a period of cooling, the injection molded product is completely solidified in the lower mold cavity 8. At this time, the cylinder 6 retracts again, driving the lifting plate 5 and the upper mold base 7 to rise, separating the mold and making it easier to remove the injection molded product.

[0023] In summary, this automotive reversing light cover injection mold, by setting a heat-conducting plate 10 on the top of the lower mold base 2 and connecting it to the heat sink 11 via a heat-conducting rod 13, forms an efficient heat conduction path. Heat is rapidly transferred from the lower mold cavity 8 to the heat sink 11, and then diffused to the outside of the mold by the heat-conducting plate 14 and the heat sink 15, effectively reducing the temperature inside the mold. The design of the heat sink 15 increases the heat dissipation area and improves the heat dissipation efficiency, ensuring that the mold maintains a low operating temperature during the injection molding process, thereby reducing the risk of mold deformation and thermal fatigue. An induced draft fan 18 is introduced as an active cooling device, drawing heat from inside the mold through the heat absorption pipe 19 and the air inlet pipe 17. The heat is discharged outside the mold through the air outlet duct 21. This forced air cooling method greatly accelerates the heat dissipation speed and further reduces the mold temperature. The filter screen 20 inside the heat absorption pipe 19 can not only prevent dust and other impurities from entering the mold, but also increase the heat exchange area between the air and the inside of the mold, thus improving the heat dissipation effect. The ingenious design of the heat dissipation plate 11 and the heat conduction rod 13 ensures that the heat is evenly distributed and quickly conducted inside the mold. At the same time, the addition of the insulating rod 12 not only ensures the stable installation of the heat dissipation plate 11, but also avoids the influence of current on the heat dissipation effect. The setting of the ventilation net 22 provides good ventilation conditions for the mold, further improving the uniformity and efficiency of heat dissipation.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0026] 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. An injection mold for a car reversing light cover, comprising a base (1), characterized in that: The base (1) has a lower mold base (2) fixedly installed at the center of its top. Support rods (3) are fixedly connected to the four sides of the top of the base (1). A lifting plate (5) is slidably connected between the four support rods (3) at the top position. An upper mold base (7) is fixedly installed at the center of the bottom of the lifting plate (5). A lower mold cavity (8) is opened at the center of the top of the lower mold base (2). A groove (9) is opened at the bottom position inside the upper mold base (7). A heat dissipation plate (11) is installed inside the groove (9). A heat conduction plate (10) is fixedly connected to the bottom of the lower mold cavity (8). A heat conduction plate (2) (14) is fixedly connected to both sides of the top of the heat dissipation plate (11). One side of the heat conduction plate (2) (14) extends through to the outside of the lower mold base (2) and is fixedly connected to several heat dissipation strips (15).

2. The injection mold for an automotive reversing light cover according to claim 1, characterized in that: The bottom of the heat-conducting plate (10) is fixedly connected with several heat-conducting rods (13), the bottom of which penetrates into the interior of the groove (9) and is fixedly connected to the top of the heat sink (11).

3. The injection mold for an automotive reversing light cover according to claim 1, characterized in that: An insulating rod (12) is fixedly connected to the bottom of the heat sink (11), and the bottom of the insulating rod (12) is fixedly connected to the bottom of the groove (9).

4. The injection mold for an automotive reversing light cover according to claim 1, characterized in that: A ventilation mesh (22) is fixedly installed on the front side of the groove (9) corresponding to the front surface of the lower mold base (2).

5. The injection mold for an automotive reversing light cover according to claim 1, characterized in that: Insulating plates (16) are fixedly connected to the bottom positions on both sides of the lower mold base (2). An induced draft fan (18) is fixedly installed on the side of the insulating plate (16) away from the lower mold base (2). An air outlet pipe (21) is connected to one side of the induced draft fan (18). An air inlet pipe (17) is connected to both sides of the groove (9).

6. The injection mold for an automotive reversing light cover according to claim 5, characterized in that: The other side of the induced draft fan (18) is connected to a heat absorption pipe (19), one side of which is connected to the air inlet pipe (17), and a filter screen (20) is fixedly installed in the heat absorption pipe (19) near the center.

7. The injection mold for an automotive reversing light cover according to claim 1, characterized in that: A top plate (4) is fixedly connected to the top of the four support rods (3). A cylinder (6) is fixedly installed at the center of the top of the top plate (4). The output end of the cylinder (6) extends through to the bottom of the top plate (4) and is fixedly connected to the top of the lifting plate (5).

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