Automobile lamp shell forming die

By introducing a water pump and coolant system into the molding die for automotive headlight housings, the problem of low production efficiency caused by natural cooling of the die was solved, achieving rapid cooling and high-efficiency production.

CN224266107UActive Publication Date: 2026-05-22CHANGZHOU HENGYU VEHICLE PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU HENGYU VEHICLE PARTS CO LTD
Filing Date
2025-06-24
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Existing automotive headlight housing molding dies require natural cooling after use, resulting in low production efficiency.

Method used

The system employs a water pump and coolant system, and achieves rapid cooling through structures such as water channels, nozzles, and cooling fans, ensuring the circulation and uniform distribution of coolant during mold opening and closing.

Benefits of technology

It improves the production efficiency of automotive headlight housing molding, ensures that the flow of coolant is not affected during mold opening and closing, avoids coolant overheating, and improves cooling effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automobile lamp shell forming die which comprises a lower die body and an upper die body, a liquid injection opening is formed in the upper portion of the upper die body, a fixing plate is fixedly connected to the side face of the lower die body, a liquid storage tank is placed on the surface of the fixing plate, a water pump is installed above the fixing plate, and a water outlet is formed in the upper portion of the water pump. The water inlet end of the water pump communicates with the interior of the liquid storage tank through a water pumping pipe, and the water outlet end of the water pump communicates with one end of the first telescopic pipe through a first connecting pipe. Cooling liquid in the liquid storage tank can be injected into the upper mold body through the first connecting pipe and the water inlet pipe by the water pumping pipe through the water pump, cooling and mold taking are facilitated after materials in the lower mold body and the upper mold body are formed, the production efficiency is improved, meanwhile, water after heat conversion can be conveniently circulated through the water outlet pipe and the second connecting pipe, and the production efficiency is improved. And the cooling liquid can be uniformly sprayed to the surface of the slow flow mechanism for cooling through the flow dividing pipe, so that the cooling effect is prevented from being influenced by overheating of the cooling liquid.
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Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a molding mold for automotive headlight housings. Background Technology

[0002] Automotive headlight housing molding molds are specialized tools used to manufacture automotive headlight housings. Their main function is to inject molten plastic into the mold cavity, and after cooling and solidification, the headlight housing and lens components are obtained. Automotive headlight molds are usually made of high-quality alloy steel, which has high strength, high hardness and good wear resistance, and can meet the needs of long-term use of headlights.

[0003] Existing molding dies produce materials at high temperatures after molding, requiring them to cool naturally before being removed from the mold. This increases processing time and reduces production efficiency. To address these issues, we propose an automotive headlight housing molding die. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a molding die for automotive headlight housings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A molding die for an automotive headlight housing includes a lower die and an upper die. The upper die has a liquid injection port on its top. A fixing plate is fixedly connected to the side of the lower die, and a liquid storage tank is placed on the surface of the fixing plate. A water pump is installed above the fixing plate. The water pump's inlet is connected to the liquid storage tank via a pumping pipe. The water pump's outlet is connected to one end of a first telescopic pipe via a first connecting pipe, and the other end of the first telescopic pipe is connected to a water inlet inside the upper die via an inlet pipe. The water outlet inside the upper die is connected to one end of an outlet pipe, and the other end of the outlet pipe is connected to one end of a second connecting pipe via a second telescopic pipe. A flow-slowing mechanism is fixed inside the liquid storage tank, and a heat dissipation mechanism is installed above the liquid storage tank.

[0007] Preferably, the upper mold body has multiple water channels arranged in an interlaced manner, and the inlet and outlet of the multiple water channels are all located on one side of the upper mold body.

[0008] Preferably, the other end of the second connecting pipe is connected to the inside of the diversion pipe, and multiple sets of nozzles are equally spaced on the surface of the diversion pipe.

[0009] Preferably, the flow control mechanism includes a guide plate, which is fixedly connected to the upper side of one side of the inner wall of the liquid storage tank, and multiple sets of water-blocking strips are fixed at equal intervals on the surface of the guide plate.

[0010] Preferably, a replenishment pipe is installed on the surface of the liquid storage tank, and a sealing cap is fitted over the replenishment pipe.

[0011] Preferably, the heat dissipation mechanism includes mounting bolts, an mounting plate is mounted on the top of the liquid storage tank by the mounting bolts, and the mounting plate is fixedly connected to the side of the partition frame, and a cooling fan is installed inside the partition frame.

[0012] Preferably, the liquid storage tank has a through hole adapted to the partition frame at the top, a through hole adapted to the cooling fan at the bottom of the partition frame, and multiple through slots at the top of the partition frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This device uses a water pump to pump coolant from the storage tank into the upper mold body through the first connecting pipe and the inlet pipe. This facilitates cooling of the material inside the lower and upper mold bodies after molding, making it easier to remove the mold and improving production efficiency. At the same time, the water after heat conversion can be easily circulated through the outlet pipe and the second connecting pipe, and can be evenly sprayed onto the surface of the slow-flow mechanism through the distribution pipe for cooling, preventing the coolant from overheating and affecting the cooling effect.

[0015] 2. The device, through the first and second telescopic pipes, allows for easy opening and closing of the lower and upper mold bodies without affecting the flow of coolant. The coolant in the storage tank can be easily replenished through the replenishment pipe. At the same time, the cooling fan installed above the storage tank can cool the coolant flowing on the surface of the guide plate and water baffle. Furthermore, the partition frame can prevent foreign objects and debris from entering the cooling fan and causing damage. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the automotive headlight housing molding die proposed in this utility model;

[0017] Figure 2 for Figure 1 A three-dimensional schematic diagram of the upper mold body and the liquid storage tank structure;

[0018] Figure 3 for Figure 1 A three-dimensional cross-sectional view of the liquid storage tank structure in the diagram;

[0019] Figure 4 for Figure 1 A three-dimensional cross-sectional diagram of the separator frame structure.

[0020] In the diagram: 1. Lower mold body; 2. Upper mold body; 3. Fixing plate; 4. Liquid storage tank; 5. Water pump pipe; 6. Water pump; 7. First connecting pipe; 8. First telescopic pipe; 9. Water inlet pipe; 10. Liquid injection port; 11. Water outlet pipe; 12. Second telescopic pipe; 13. Second connecting pipe; 14. Diverter pipe;

[0021] 15. Flow control mechanism; 151. Flow guide plate; 152. Water baffle strip;

[0022] 16. Heat dissipation mechanism; 161. Mounting bolts; 162. Mounting plate; 163. Divider frame; 164. Cooling fan;

[0023] 17. Infusion tube. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-4 The automotive headlight housing molding die includes a lower mold body 1 and an upper mold body 2. A liquid injection port 10 is provided on the upper part of the upper mold body 2. A fixing plate 3 is fixedly connected to the side of the lower mold body 1, and a liquid storage tank 4 is placed on the surface of the fixing plate 3. A water pump 6 is installed on the upper part of the fixing plate 3. The water inlet of the water pump 6 is connected to the inside of the liquid storage tank 4 through a water suction pipe 5. The water outlet of the water pump 6 is connected to one end of a first telescopic pipe 8 through a first connecting pipe 7. The other end of the first telescopic pipe 8 is connected to the water inlet inside the upper mold body 2 through a water inlet pipe 9. The water outlet inside the upper mold body 2 is connected to one end of a water outlet pipe 11. The other end of the water outlet pipe 11 is connected to one end of a second connecting pipe 13 through a second telescopic pipe 12. Through the first telescopic pipe 8 and the second telescopic pipe 12, the circulation of coolant can be facilitated during the opening and closing of the lower mold body 1 and the upper mold body 2 without affecting the circulation of coolant. A flow-slowing mechanism 15 is fixed inside the liquid storage tank 4, and a heat dissipation mechanism 16 is installed on the upper part of the liquid storage tank 4.

[0026] Furthermore, refer to Figure 1 and Figure 2 It can be seen that multiple water channels are interwoven inside the upper mold body 2, and the inlet and outlet of the multiple water channels are all located on one side of the upper mold body 2. Through the multiple water channels interwoven inside the upper mold body 2, the coolant can circulate conveniently inside the upper mold body 2 to cool the material inside the upper mold body 2.

[0027] Furthermore, refer to Figure 2 and Figure 3It can be seen that the other end of the second connecting pipe 13 is connected to the inside of the diversion pipe 14, and multiple sets of nozzles are opened at equal intervals on the surface of the diversion pipe 14. Through the multiple sets of nozzles opened on the surface of the diversion pipe 14, the coolant can be evenly sprayed onto the surface of the slow flow mechanism 15, which facilitates the heat dissipation of the coolant.

[0028] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the flow-slowing mechanism 15 includes a guide plate 151. The guide plate 151 is fixedly connected to the upper side of one side of the inner wall of the liquid storage tank 4. The guide plate 151 is set in an inclined shape, which can facilitate the guiding of the coolant. In addition, multiple sets of water-blocking strips 152 are fixed at equal intervals on the surface of the guide plate 151. The multiple sets of water-blocking strips 152 fixed at equal intervals on the surface of the guide plate 151 can facilitate the flow-slowing effect and facilitate the heat dissipation of the coolant.

[0029] Furthermore, refer to Figure 1 and Figure 3 It can be seen that a replenishment pipe 17 is installed on the surface of the liquid storage tank 4, and a sealing cap is fitted on the top of the replenishment pipe 17. The replenishment pipe 17 can be used to easily add coolant to the liquid storage tank 4, and the sealing cap on the top of the replenishment pipe 17 can be used to seal the replenishment pipe 17.

[0030] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the heat dissipation mechanism 16 includes mounting bolts 161. A mounting plate 162 is mounted on the top of the liquid storage tank 4 via mounting bolts 161. The mounting bolts 161 and mounting plate 162 facilitate the installation of the partition frame 163, and the mounting plate 162 is fixedly connected to the side of the partition frame 163. A cooling fan 164 is installed inside the partition frame 163, which can quickly cool the coolant on the surface of the guide plate 151 and the baffle 152.

[0031] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the liquid storage tank 4 has a through hole on the top that matches the partition frame 163, and the partition frame 163 has a through hole on the bottom that matches the cooling fan 164. The through holes on the top of the liquid storage tank 4 and the through holes on the bottom of the partition frame 163 facilitate heat dissipation. The partition frame 163 has multiple through slots on the top, which facilitate venting and blocking foreign objects and debris.

[0032] Working principle: When this utility model is in use, when the current mold 1 is in use, according to the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4By closing the mold with the lower mold 1 and the upper mold 2, the raw slurry can be injected into the lower mold 1 and the upper mold 2 through the injection port 10 for forming. At this time, the water pump 6 can pump the coolant in the storage tank 4 to the first connecting pipe 7 through the water pumping pipe 5, and guide it into the upper mold 2 through the first telescopic pipe 8 and the water inlet pipe 9 to cool down the material in the lower mold 1 and the upper mold 2. The coolant after heat exchange is guided into the second connecting pipe 13 and the diversion pipe 14 through the water outlet pipe 11 and the second telescopic pipe 12. Through the multiple sets of nozzles opened on the surface of the diversion pipe 14, the coolant can be evenly distributed to the surface of the guide plate 151. The water baffle 152 can play a slowing role and play a cooling circulation role. At the same time, the cooling fan 164 can cool down the slow-flowing coolant on the surface of the guide plate 151 and the water baffle 152.

[0033] The above is the complete working principle of this utility model.

[0034] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0035] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0036] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, 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 series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A molding die for an automotive headlight housing, comprising a lower mold body (1) and an upper mold body (2), characterized in that, The upper mold body (2) has an injection port (10) on its upper part. The lower mold body (1) is fixedly connected to a fixing plate (3) on its side. A storage tank (4) is placed on the surface of the fixing plate (3). A water pump (6) is installed on the upper part of the fixing plate (3). The water inlet of the water pump (6) is connected to the storage tank (4) through a water pumping pipe (5). The water outlet of the water pump (6) is connected to one end of the first telescopic pipe (8) through a first connecting pipe (7). The other end of the first telescopic pipe (8) is connected to the water inlet of the upper mold body (2) through a water inlet pipe (9). The water outlet of the upper mold body (2) is connected to one end of the water outlet pipe (11). The other end of the water outlet pipe (11) is connected to one end of the second connecting pipe (13) through a second telescopic pipe (12). A slow flow mechanism (15) is fixed inside the storage tank (4). A heat dissipation mechanism (16) is installed on the upper part of the storage tank (4).

2. The automotive headlight housing molding die according to claim 1, characterized in that, Multiple water channels are interwoven inside the upper mold body (2), and the inlet and outlet of each water channel are located on one side of the upper mold body (2).

3. The automotive headlight housing molding die according to claim 1, characterized in that, The other end of the second connecting pipe (13) is connected to the inside of the diversion pipe (14), and multiple sets of nozzles are opened at equal intervals on the surface of the diversion pipe (14).

4. The automotive headlight housing molding die according to claim 1, characterized in that, The slow-flow mechanism (15) includes a guide plate (151). The guide plate (151) is fixedly connected to the upper side of one side of the inner wall of the liquid storage tank (4), and multiple sets of water-blocking strips (152) are fixed at equal intervals on the surface of the guide plate (151).

5. The automotive headlight housing molding die according to claim 1, characterized in that, The surface of the liquid storage tank (4) is equipped with a replenishment pipe (17), and a sealing cap is fitted over the replenishment pipe (17).

6. The automotive headlight housing molding die according to claim 1, characterized in that, The heat dissipation mechanism (16) includes mounting bolts (161). A mounting plate (162) is mounted on the top of the liquid storage tank (4) by mounting bolts (161), and the mounting plate (162) is fixedly connected to the side of the partition frame (163). A heat dissipation fan (164) is installed inside the partition frame (163).

7. The automotive headlight housing molding die according to claim 6, characterized in that, The liquid storage tank (4) has a through hole adapted to the partition frame (163) at the top, and a through hole adapted to the cooling fan (164) at the bottom of the partition frame (163). Multiple through slots are provided above the partition frame (163).