Automobile lamp manufacturing die

Abstract

The utility model relates to the technical field of automobile lamp molds, and discloses an automobile lamp manufacturing mold which comprises a mold base, a bearing bowl is connected in the mold base in a sliding mode, downward pressing columns are fixedly connected to the bearing bowl at equal intervals, sliding pieces are fixedly connected to the bottom ends of the downward pressing columns, and a sleeve is fixedly connected to an inner cavity of the mold base. The product quality can be improved for the whole work, and the dimensional accuracy is ensured; by monitoring the weight of the injection plastic melt in real time, the amount of plastic injected into the mold each time can be accurately controlled, so that the process requirements are strictly met. Taking an automobile lampshade as an example, the assembly precision of the automobile lampshade and a lamp holder is poor due to injection amount deviation in the past; after the monitoring design is adopted, the injection amount deviation can be controlled within an extremely small range, the length size deviation of the lampshade can be stably controlled, the assembling integrating degree of the lampshade and the lamp holder is greatly improved, the problems of shaking and abnormal sound in the running process of a vehicle due to too loose assembling are solved, and the overall installation stability and reliability of the lamp are improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive lamp mold technology, specifically to an automotive lamp manufacturing mold. Background Technology

[0002] In the automotive lighting manufacturing industry, with the booming development of the global automotive industry and the continuous growth of automobile production, the demand for lighting fixtures is also increasing. At the same time, consumers are constantly raising their requirements for the quality and performance of automotive lighting fixtures, expecting not only good lighting effects but also higher standards in terms of appearance design, reliability, and energy efficiency. Injection molding, as one of the core processes in automotive lighting manufacturing, occupies a crucial position in the entire production process. Its production efficiency and product quality directly affect the market competitiveness and economic benefits of lighting fixture manufacturers.

[0003] Currently, to improve production efficiency and product consistency, most automotive lighting manufacturers have introduced automated injection molding equipment. Automated injection molding equipment can produce according to preset programs and parameters, reducing the impact of human factors on product quality. However, despite the continuous improvement in automation, precise control of the injection volume remains a critical challenge in the injection molding process. Ideally, for the same lighting fixture, the amount of molten plastic injected into the mold each time should be exactly the same. This ensures that the finished lighting fixtures strictly meet design standards in terms of dimensional accuracy, appearance quality, and optical performance.

[0004] However, in actual production, the complex interplay of factors such as equipment precision issues, variations in plastic properties, and fluctuations in process parameters inevitably leads to deviations in injection volume during automated injection molding. These deviations accumulate over large-scale, long-term production, gradually evolving into significant quality problems. This not only results in substantial waste of raw materials and increased production costs but also damages the company's market reputation due to product quality issues, leading to decreased customer satisfaction and ultimately negatively impacting the company's long-term development. Therefore, effectively addressing injection volume deviation in the injection molding process has become one of the critical technical challenges urgently needing to be solved in the automotive lighting manufacturing industry, and numerous companies and research institutions are actively exploring relevant solutions.

[0005] Therefore, we have proposed a manufacturing mold for automotive headlights to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings of the prior art, this utility model provides an automotive headlight manufacturing mold to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an automotive headlight manufacturing mold, including a mold base, wherein a support bowl is slidably connected inside the mold base.

[0010] Preferably, the support bowl is fixedly connected with pressure columns at equal intervals, the bottom end of the pressure columns is fixedly connected with sliding pieces, and the inner cavity of the mold seat is fixedly connected with a sleeve.

[0011] Preferably, a spring is fixedly connected to the inner cavity of the sleeve, and a flow port is provided through the sleeve.

[0012] Preferably, a barrier ring is fixedly connected to the support bowl.

[0013] Preferably, an upper mold is attached to the mold base, and a shaping part is fixedly connected inside the upper mold.

[0014] Preferably, the supporting bowl and the molding part together form a molding groove.

[0015] Preferably, a connecting pipe is provided through the mold base, a feedback tube is fixedly connected to the connecting pipe, and scale lines are provided on the connecting pipe.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a mold for manufacturing automotive lights, which has the following advantages:

[0018] 1. Through its design, this utility model can bring the following benefits to the overall operation:

[0019] Improving product quality and ensuring dimensional accuracy: By monitoring the weight of the injected plastic melt in real time, the amount of plastic injected into the mold each time can be precisely controlled, ensuring it strictly meets process requirements. Taking automotive lamp covers as an example, previously, deviations in injection volume caused assembly inaccuracies between the lamp cover and the lamp holder. With this monitoring design, injection volume deviations can be controlled to a very small range, and the length deviation of the lamp cover can be stably controlled. This significantly improves the fit between the lamp cover and the lamp holder, avoiding problems such as shaking and abnormal noises during vehicle operation due to loose assembly, and enhancing the overall installation stability and reliability of the lamp.

[0020] Improving appearance quality and monitoring the weight of the injected plastic melt can effectively prevent defects such as shrinkage marks and dents on the lamp surface caused by insufficient injection volume. In the flat parts of the lamp, precise control of the injection volume can effectively ensure that the plastic is fully replenished when it cools and shrinks in the mold, which can basically eliminate shrinkage marks and greatly improve the flatness of the lamp surface, meeting the strict appearance quality requirements of high-end automotive lamps;

[0021] Reducing raw material waste and improving production efficiency: In large-scale production, previous injection volume deviations resulted in a large number of defective products due to size, appearance, or optical performance issues, leading to raw material waste. This monitoring design reduces the defect rate, significantly decreasing raw material waste and lowering procurement costs. Furthermore, improved product quality stability reduces production interruptions and adjustment time caused by defects. The production line can maintain continuous and stable operation, significantly improving production efficiency; effectively increasing the actual production time of the equipment and increasing product output per unit time.

[0022] 2. Through its design, this utility model can bring the following benefits to the overall operation:

[0023] Product quality improvement and ensuring uniform mold cooling: Since the coolant is used to monitor melt weight and aid in mold cooling and demolding, the cooling system needs to be optimized to ensure uniform distribution of coolant within the mold base, achieving efficient and uniform cooling. Precise control and monitoring of coolant flow rate and temperature parameters can effectively prevent localized overheating or overcooling of the mold, ensuring uniform cooling across all parts of the mold. This reduces defects such as deformation and internal stress caused by uneven cooling, improving product dimensional accuracy and quality stability.

[0024] Improving demolding performance: Appropriate coolant temperature and flow rate not only facilitate monitoring melt weight but also provide favorable conditions for mold cooling and demolding. By optimizing the cooling system, the mold can be rapidly cooled at a suitable temperature, reducing adhesion between the product and the mold and making demolding smoother. For example, in the injection molding of automotive headlight covers, good cooling and demolding performance can prevent problems such as tearing and deformation of the headlight cover during demolding, thus improving product yield. Attached Figure Description

[0025] Figure 1 This is a view of the appearance of the present utility model;

[0026] Figure 2 This is a diagram illustrating the mold assembly process of this utility model.

[0027] Figure 3 This is a cross-sectional view of the mold base and the upper mold of this utility model;

[0028] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0029] Figure 5 This is a three-dimensional view of the mold base of this utility model after sectional cutting.

[0030] In the picture:

[0031] 1. Mold base; 2. Support bowl; 3. Lower pressure column; 4. Sliding plate; 5. Sleeve; 6. Spring; 7. Flow port; 8. Barrier ring; 9. Upper mold; 10. Molded part; 11. Molding groove; 12. Connecting pipe; 13. Feedback tube; 14. Scale line. Detailed Implementation

[0032] 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.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0034] Example

[0035] Please refer to Figures 1 to 5 As shown:

[0036] A mold for manufacturing automotive headlights includes a mold base 1, a support bowl 2 slidably connected inside the mold base 1, a lower pressure column 3 fixedly connected at equal intervals on the support bowl 2, a sliding piece 4 fixedly connected to the bottom end of the lower pressure column 3, a sleeve 5 fixedly connected to the inner cavity of the mold base 1, a spring 6 fixedly connected to the inner cavity of the sleeve 5, a flow port 7 through the sleeve 5, a blocking ring 8 fixedly connected to the support bowl 2, an upper mold 9 attached to the mold base 1, a plastic part 10 fixedly connected inside the upper mold 9, the support bowl 2 and the plastic part 10 together forming a molding groove 11, a connecting pipe 12 through the mold base 1, a feedback tube 13 fixedly connected to the connecting pipe 12, and a scale line 14 provided on the connecting pipe 12.

[0037] in:

[0038] Coolant is provided inside the cavity of mold base 1.

[0039] The sliding plate 4 is adapted to slide within the inner cavity of the sleeve 5.

[0040] The upper mold 9 has a solution filling port.

[0041] The support bowl 2, the barrier ring 8, and the molding part 10 can be combined to form a closed space, which can be injection molded into lamp parts.

[0042] Working principle:

[0043] In the initial state: the bottom surface of the support bowl 2 and the inner cavity of the mold base 1 are provided with coolant, the sleeve 5 is also provided with coolant, and the spring 6 is not compressed.

[0044] In use, the mold base 1 is first fastened to the upper mold 9. At this time, the support bowl 2, the barrier ring 8, and the molding part 10 can form a closed space. With the help of the pouring port on the upper mold 9, the plastic melt can be poured into the molding groove 11. As the pouring proceeds, the support bowl 2 will gradually move downward as the poured melt increases. At this time, the support bowl 2 will slide in the sleeve 5 with the lower pressure column 3 and the sliding plate 4 on it. During the sliding, the spring 6 will be compressed. At this time, the coolant on the bottom surface of the support bowl 2 and located in the inner cavity of the mold base 1 will gradually transfer to the feedback tube 13 through the connecting pipe 12 as the support bowl 2 moves downward. At this time, the operator can judge whether the plastic melt has been poured to the standard amount that meets the process requirements by the amount of coolant transferred to the feedback tube 13.

[0045] Furthermore, when the pressure column 3 moves with the sliding plate 4 in the sleeve 5, since there is coolant in the inner cavity of the sleeve 5, the coolant will flow during the process of the pressure column 3 moving with the sliding plate 4 in the inner cavity of the sleeve 5. This action can provide a certain auxiliary effect during the filling process.

[0046] Furthermore, through design, overall product quality can be improved and dimensional accuracy ensured: by monitoring the weight of the injected plastic melt in real time, the amount of plastic injected into the mold each time can be precisely controlled, ensuring it strictly meets process requirements. Taking automotive lamp covers as an example, previously, deviations in injection volume caused assembly accuracy issues with the lamp holder. With this monitoring design, injection volume deviations can be controlled within a very small range, and the length deviation of the lamp cover can be stably controlled, greatly improving the fit between the lamp cover and the lamp holder. This avoids problems such as shaking and abnormal noise during vehicle operation due to loose assembly, and enhances the overall installation stability and reliability of the lamp.

[0047] Improving appearance quality and monitoring the weight of the injected plastic melt can effectively prevent defects such as shrinkage marks and dents on the lamp surface caused by insufficient injection volume. In the flat parts of the lamp, precise control of the injection volume can effectively ensure that the plastic is fully replenished when it cools and shrinks in the mold, which can basically eliminate shrinkage marks and greatly improve the flatness of the lamp surface, meeting the strict appearance quality requirements of high-end automotive lamps;

[0048] Reducing raw material waste and improving production efficiency: In large-scale production, previous injection volume deviations resulted in a large number of defective products due to size, appearance, or optical performance issues, leading to raw material waste. This monitoring design reduces the defect rate, significantly decreasing raw material waste and lowering procurement costs. Furthermore, improved product quality stability reduces production interruptions and adjustment time caused by defects. The production line can maintain continuous and stable operation, significantly improving production efficiency; effectively increasing the actual production time of the equipment and increasing product output per unit time.

[0049] Furthermore, through design, overall product quality can be improved by ensuring uniform mold cooling: since the coolant is used both to monitor melt weight and to aid in mold cooling and demolding, the cooling system needs to be optimized to ensure uniform distribution of the coolant within the mold base 1, achieving efficient and uniform cooling. Precise control and monitoring of coolant flow rate and temperature parameters can effectively prevent localized overheating or overcooling of the mold, ensuring uniform cooling across all parts of the mold. This reduces defects such as deformation and internal stress caused by uneven cooling, improving product dimensional accuracy and quality stability.

[0050] Improving demolding performance: Appropriate coolant temperature and flow rate not only facilitate monitoring melt weight but also provide favorable conditions for mold cooling and demolding. By optimizing the cooling system, the mold can be rapidly cooled at a suitable temperature, reducing adhesion between the product and the mold and making demolding smoother. For example, in the injection molding of automotive headlight covers, good cooling and demolding performance can prevent problems such as tearing and deformation of the headlight cover during demolding, thus improving product yield.

[0051] Please refer to the above work process. Figures 1 to 5 .

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0053] 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 mold for manufacturing automotive headlights, comprising a mold base (1), characterized in that: A support bowl (2) is slidably connected inside the mold base (1), and a coolant is provided on the bottom surface of the support bowl (2) and inside the mold base (1); The support bowl (2) is fixedly connected with a lower pressure column (3) at equal intervals. The bottom end of the lower pressure column (3) is fixedly connected with a sliding piece (4). The inner cavity of the mold seat (1) is fixedly connected with a sleeve (5). A spring (6) is fixedly connected to the inner cavity of the sleeve (5). A flow port (7) is provided through the sleeve (5). There are two flow ports (7), which are located on the left and right sides of the sleeve (5) and are interconnected.

2. The automotive headlight manufacturing mold according to claim 1, characterized in that: A barrier ring (8) is fixedly connected to the support bowl (2).

3. The automotive headlight manufacturing mold according to claim 2, characterized in that: The mold base (1) is attached to an upper mold (9), and a plastic part (10) is fixedly connected inside the upper mold (9). The dimensions of the barrier ring (8), the upper mold (9) and the plastic part (10) are compatible with each other, and a sealed space can be formed after they are fastened together.

4. The automotive headlight manufacturing mold according to claim 3, characterized in that: The supporting bowl (2) and the plastic part (10) together form a molding groove (11), and the upper mold (9) is provided with a pouring port, which is connected to the molding groove (11).

5. The automotive headlight manufacturing mold according to claim 1, characterized in that: A connecting pipe (12) is connected through the mold base (1), and a feedback tube (13) is fixedly connected to the connecting pipe (12). A scale line (14) is provided on the connecting pipe (12). The connecting pipe (12) is configured as an internal hollow structure and extends through and out of the mold base (1), and is interconnected with the feedback tube (13).

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