Forming die for inner decorative frame of tail lamp

Abstract

The utility model relates to the technical field of injection mold production, in particular to a taillight inner decoration frame forming mold which comprises a fixed mold assembly, a movable mold assembly and an ejection assembly, the ejection assembly comprises a flat top part, a needle supporting part and a positioning part, a protruding part is arranged at the bottom of the flat top part, a first groove and a second groove which are communicated are formed in the end of the needle supporting part, the flat top part is partially arranged in the first groove, the protruding part is arranged in the second groove, and limiting in the height direction and the thickness direction is achieved. The positioning part is arranged between the bottom of the protruding part and the bottom of the second groove and plays a limiting role in the width direction. The flat top part and the needle supporting part are designed in a split manner, and the convex part is matched with the double grooves, so that the positioning precision and stability are improved; the needle supporting part is lengthened as much as possible to reduce the length of the flat top part, reduce the bearing load and avoid deformation or damage; when the flat top part is damaged, only the part needs to be replaced, the needle supporting part can be continuously used, the whole ejection assembly does not need to be replaced, and therefore the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold production technology, and in particular to a molding die for a taillight inner decorative frame. Background Technology

[0002] The taillight inner trim frame is an important component of automotive taillights. Its main function is to secure and protect the internal components of the taillights, while also serving a decorative purpose. Taillight inner trim frames are typically manufactured using injection molding to ensure shape stability, structural robustness, and compliance with appearance quality requirements. For efficient and stable production, mold design is crucial, especially the structure of the molding mold, which directly affects product quality, production efficiency, and mold lifespan.

[0003] Existing taillight inner trim frame molding molds are mainly manufactured using injection molding. During mold design, the demolding mechanism needs to be considered to ensure smooth demolding after molding. However, due to the structural characteristics of the taillight inner trim frame, there cannot be ejector pin marks inside, otherwise it will affect the product's appearance and assembly accuracy.

[0004] Therefore, the arrangement of ejector pins is greatly limited, such as Figure 1 As shown in the schematic diagram of the inner decorative frame of the taillight, it can only be designed on the ribs around the inner decorative frame of the taillight, resulting in a narrower and thinner flat top. In addition, the conventional flat top pin is a standard part with a fixed length of the support pin part. The support pin part and the flat top part are an integral piece, which makes the flat top part relatively long and thin. During long-term use, repeated stress may cause breakage or deformation, affecting the service life of the mold.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] This utility model provides a mold for forming the inner decorative frame of a taillight, thereby effectively solving the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a taillight inner decorative frame forming mold, comprising: a fixed mold assembly, a moving mold assembly, and an ejection assembly;

[0008] The fixed mold assembly and the moving mold assembly are combined to form a receiving space corresponding to the product; the ejection assembly is disposed inside the moving mold assembly and is used to eject the injection-molded product;

[0009] The ejection assembly includes a flat top component, a support pin component, and a positioning component. The flat top component has a protrusion at its bottom, and the support pin component has a first groove and a second groove connected in sequence at its end. The flat top component is partially disposed in the first groove, and the protrusion is disposed in the second groove. The protrusion is used to limit the height and thickness of the flat top component. The positioning component is disposed between the bottom of the protrusion and the bottom of the second groove and is used to limit the width of the flat top component.

[0010] Furthermore, the cross-section of the protrusion is a rectangular structure, and the thickness of the rectangular structure is greater than the thickness of the flat top component, which is used to limit the height and thickness of the flat top component.

[0011] Furthermore, the cross-section of the protrusion is a triangular structure, and the thickness of the triangular structure is greater than the thickness of the flat top component, which is used to restrict the movement of the flat top component in the height and thickness directions.

[0012] Furthermore, the bottom of the protrusion is provided with a third groove, and the bottom of the second groove is provided with a pit corresponding to the third groove. The positioning component is disposed in the third groove. After the flat top component and the pin support component are combined, the positioning component partially falls into the pit under the action of gravity.

[0013] Furthermore, a magnet is provided at the bottom of the recess for drawing part of the positioning component into the recess.

[0014] Furthermore, the bottom of the third groove is provided with a blind hole, and a spring is provided in the blind hole for pushing the positioning component into the recess.

[0015] Furthermore, the pin support component is located at the bottom of the second groove and has a fourth groove parallel to the length direction of the second groove. The bottom of the protrusion is provided with a fifth groove corresponding to the fourth groove. The bottom of the positioning component is provided with a sixth groove corresponding to the fourth groove. The tool is placed in the fourth and sixth grooves and the positioning component is pushed upward to push the positioning component completely into the protrusion, thereby releasing the width direction limitation of the flat top component.

[0016] Furthermore, the flat-top component has guide angles on both sides near the first and second grooves.

[0017] Furthermore, the cross-section of the positioning component is either circular or a regular polygon, one of the following.

[0018] Furthermore, the bottom of the needle support component is provided with a hanging platform, which is located in the stepped hole of the ejector plate.

[0019] The beneficial effects of this utility model are as follows: By designing the flat top component and the support pin component separately, and adopting a structure with a protrusion and a double groove, the protrusion is used to position the flat top component in the height and thickness directions, while the positioning component is used to position the flat top component in the width direction, thereby achieving precise positioning and stable splicing between the flat top component and the support pin component; without affecting the ejection, the length of the support pin component is maximized to reduce the length of the flat top component, which can reduce the load on the flat top component, making it more stable and less prone to deformation or damage; when the flat pin is damaged, only the upper flat top component needs to be removed and replaced, and the support pin component can continue to be used without replacing the entire ejection assembly, thus reducing maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the decorative frame inside the taillight in the background art;

[0022] Figure 2 A schematic diagram of the mold for forming the inner decorative frame of the taillight;

[0023] Figure 3 This is a structural diagram illustrating one specific implementation of the protrusion structure.

[0024] Figure 4 This is a structural diagram illustrating another specific implementation of the protrusion structure.

[0025] Figure 5 This is a schematic diagram of the structure of the pin support component;

[0026] Figure 6 This is a schematic diagram of the flat-top component.

[0027] Figure 7 This is a schematic diagram of the explosion of the ejected component;

[0028] Figure 8 A schematic diagram showing the installation of the flat-top component and the support pin component;

[0029] Figure 9 This is a schematic diagram showing the disassembly of the flat top component and the support pin component.

[0030] Reference numerals: 1. Fixed mold assembly; 2. Moving mold assembly; 3. Ejection assembly; 31. Flat top component; 311. Protrusion; 311a. Third groove; 311b. Fifth groove; 312. Spring; 313. Guide angle; 32. Support pin component; 321. First groove; 322. Second groove; 323. Recess; 324. Magnet; 325. Fourth groove; 326. Hanging platform; 33. Positioning component; 331. Sixth groove; 4. Tool;

[0031] 01. Taillight inner decorative frame; 011. Rib position. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figures 2 to 9 As shown: A mold for forming an inner decorative frame of a taillight includes: a fixed mold assembly 1, a moving mold assembly 2, and an ejection assembly 3;

[0036] The fixed mold assembly 1 and the moving mold assembly 2 are combined to form a receiving space corresponding to the product, and the moving mold assembly 2 moves along the mold opening direction; the ejection assembly 3 is disposed inside the moving mold assembly 2 and is used to eject the injection-molded product;

[0037] The ejector assembly 3 includes a flat top component 31, a pin support component 32, and a positioning component 33. The flat top component 31 has a protrusion 311 at its bottom. The pin support component 32 has a first groove 321 and a second groove 322 connected in sequence at its end. The flat top component 31 is partially disposed in the first groove 321, and the protrusion 311 is disposed in the second groove 322. The protrusion 311 is used to limit the height and thickness of the flat top component 31. The positioning component 33 is disposed between the bottom of the protrusion 311 and the bottom of the second groove 322 and is used to limit the width of the flat top component 31.

[0038] During installation, with the protrusion 311 of the flat top component 31 facing upwards, the positioning component 33 is fully inserted into the bottom of the protrusion 311. The end of the flat top component 31 with the protrusion 311 is slid from the first groove 321 and the second groove 322 into the center position. Then, the preliminarily assembled flat top component 31 and the pin support component 32 are rotated 180° so that the flat top component 31 faces upwards. Under the action of gravity, the positioning component 33 partially falls into the second groove 322, completing the assembly of the flat top component 31 and the pin support component 32, thus improving the convenience of assembly.

[0039] Specifically, the pin support component 32 can be obtained by secondary processing using a push rod or a dome pin, which improves cost control and also provides the possibility of adaptability to different products. Without affecting the ejection, the length of the pin support component 32 should be made as long as possible to reduce the length of the flat dome component 31, which can reduce the load on the flat dome component 31, making it more stable and less prone to deformation or damage.

[0040] By designing the flat top component 31 and the pin support component 32 as separate units and employing a protrusion 311 and a double-groove structure, the contact area between the flat top component 31 and the pin support component 32 is effectively increased. The protrusion 311 is used to position the flat top component 31 in the height and thickness directions, while the positioning component 33 is used to position the flat top component 31 in the width direction, thereby achieving precise positioning and stable splicing between the flat top component 31 and the pin support component 32. When the flat pin is damaged, only the upper flat top component 31 needs to be removed and replaced, while the pin support component 32 can continue to be used without replacing the entire ejection assembly 3, thus reducing maintenance costs.

[0041] In addition, the positioning component 33 is located inside the flat top component 31 and the support pin component 32. Compared with the traditional transverse insertion pin method, this design can reduce the vibration of the mold during operation, reduce the risk of pin falling off, make the overall structure more stable, and improve the service life and reliability of the mold.

[0042] By using a gravity-locking positioning mechanism in conjunction with a three-dimensional limiting structure, a self-locking effect is achieved while ensuring assembly accuracy. This design enables the flat top component 31 to maintain a stable position during long-term, high-frequency operation, avoiding product ejection defects or mold damage caused by component displacement due to vibration in traditional structures.

[0043] like Figure 3 As shown, a specific implementation of the protrusion 311 structure is as follows: the cross-section of the protrusion 311 is a rectangular structure, and the thickness of the rectangular structure is greater than the thickness of the flat top component 31. It is used to limit the height and thickness of the flat top component 31. Through the protrusion 311 with a rectangular cross-section and a thickness greater than that of the flat top component 31, the flat top component 31 is effectively restricted in the height and thickness directions to prevent it from displaced or loosened during operation, thereby improving the overall stability of the mold. The thicker rectangular protrusion 311 provides stronger structural support, enabling it to better resist the influence of vibration during high-frequency ejection, avoiding the loosening or misalignment of the flat top component 31 caused by mold vibration, and improving production stability.

[0044] like Figure 4 As shown, another specific implementation of the protrusion 311 structure is as follows: the cross-section of the protrusion 311 is a triangular structure, and the thickness of the triangular structure is greater than the thickness of the flat top component 31. This is used to restrict the movement of the flat top component 31 in the height and thickness directions. Specifically, since the thickness of the protrusion 311 is greater than the thickness of the flat top component 31, and the triangular structure provides a more stable support surface, it can accurately limit the flat top component 31 in the height and thickness directions, preventing it from loosening or shifting during demolding, and improving demolding accuracy and consistency.

[0045] As a preferred embodiment of the above, refer to Figure 6 The bottom of the protrusion 311 is provided with a third groove 311a, and the bottom of the second groove 322 is provided with a pit 323 corresponding to the third groove 311a. The positioning component 33 is disposed in the third groove 311a. After the flat top component 31 and the pin support component 32 are combined, under the action of gravity, the positioning component 33 partially falls into the pit 323. Specifically, as shown in the figure... Figure 8 As shown, during installation, first place the third groove 311a of the protrusion 311 upward, install the positioning part 33 in the third groove 311a, then insert the protrusion 311 into the second groove 322 from the side, and then place the pre-assembled flat top part 31 upward. Under the action of gravity, the positioning part partially falls into the pit 323, thereby positioning the flat top part 31 in the width direction, avoiding displacement during the ejection process, and improving the stability of the mold.

[0046] Traditional transverse pin positioning methods are easily affected by mold vibration during long-term use, leading to decreased positioning accuracy and even detachment. The groove + gravity positioning method effectively reduces the impact of vibration on the positioning component 33, making the structure more stable and improving demolding accuracy and product quality.

[0047] To ensure that the positioning component 33 falls smoothly into the recess 323, the following improvements are made:

[0048] In this embodiment, a magnet 324 is provided at the bottom of the recess 323 to partially draw the positioning component 33 into the recess 323. Specifically, the attraction of the magnet 324 enables the positioning component 33 to fall more accurately into the predetermined position, making assembly easier and faster, reducing the possibility of human error. Especially when operating in a confined space, the magnetic attraction can assist in positioning, enhancing the stability of positioning and the convenience of operation.

[0049] Among them, such as Figure 7 As shown, a blind hole is provided at the bottom of the third groove 311a, and a spring 312 is provided in the blind hole to push the positioning component 33 into the recess 323. Specifically, by providing a blind hole at the bottom of the third groove 311a and installing a spring 312 in the blind hole, a continuous pushing force can be provided to the positioning component 33, so that it can be stably held in the recess 323, thereby enhancing the reliability of positioning, preventing displacement or loosening caused by mold vibration or repeated ejection, and further improving the overall reliability of the mold.

[0050] As a preferred embodiment of the above, such as Figure 5 , 6 As shown, the pin support component 32 is located at the bottom of the second groove 322 and has a fourth groove 325 parallel to the length direction of the second groove 322. The bottom of the protrusion 311 has a fifth groove 311b corresponding to the fourth groove 325. The bottom of the positioning component 33 has a sixth groove 331 corresponding to the fourth groove 325. Insert the tool 4 into the fourth groove 325 and the sixth groove 331, and push the positioning component 33 upward to push the positioning component 33 completely into the protrusion 311, releasing the width direction limitation of the flat top component 31. Specifically, when it is necessary to remove the pin component, use a sheet tool or a needle tool, refer to Figure 7 , Figure 9 The demonstration shows a common ejector pin used in mold assembly as a disassembly needle-shaped tool 4. The needle-shaped tool 4 is inserted into the fourth groove 325 and the sixth groove 331. The plate-shaped tool 4 is then moved towards the fifth groove 311b, and the positioning part is completely pushed into the third groove 311a of the protrusion 311. At this time, the positioning part 33 is contacted and limited. Then, the flat top part 31 is moved out from the side of the second groove 322, completing the disassembly of the flat top part 31.

[0051] The coordinated design of the fourth groove 325, the fifth groove 311b and the sixth groove 331 allows the positioning component 33 to be easily released using a sheet-like or needle-like tool 4, eliminating the need for complex disassembly and assembly operations. This significantly improves the efficiency of disassembling and replacing the ejector pin component, reduces operational difficulty, and enhances the convenience of mold maintenance.

[0052] In this embodiment, reference Figure 6 The flat top component 31 is provided with guide angles 313 on both sides near the first groove 321 and the second groove 322. Specifically, by providing guide angles 313 on both sides of the flat top component 31 near the first groove 321 and the second groove 322, the guide angles 313 help guide the flat top component 31 to slide smoothly into the first groove 321 and the second groove 322 during the assembly process, reducing manual adjustment and alignment operations, improving assembly efficiency, and shortening production preparation time.

[0053] The positioning component 33 has a cross-section that is circular or a regular polygon. In this embodiment, the positioning component 33 has a square cross-section. Other positioning components 33 with cross-sections such as triangles or circles can also be used. As long as they play a positioning role, they are all within the protection scope of this application.

[0054] As a preferred embodiment, the bottom of the needle support component 32 is provided with a mounting platform 326, which is located in the stepped hole of the ejector plate, so that the needle support component 32 can be installed on the ejector plate. The movement of the ejector plate drives the needle support component 32 to perform an ejection movement, thereby realizing the ejection of the product.

[0055] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mold for forming the inner decorative frame of a taillight, characterized in that, include: Fixed mold assembly, moving mold assembly, and ejection assembly; The fixed mold assembly and the moving mold assembly are combined to form a receiving space corresponding to the product; the ejection assembly is disposed inside the moving mold assembly and is used to eject the injection-molded product; The ejection assembly includes a flat top component, a support pin component, and a positioning component. The flat top component has a protrusion at its bottom, and the support pin component has a first groove and a second groove connected in sequence at its end. The flat top component is partially disposed in the first groove, and the protrusion is disposed in the second groove. The protrusion is used to limit the height and thickness of the flat top component. The positioning component is disposed between the bottom of the protrusion and the bottom of the second groove and is used to limit the width of the flat top component.

2. The taillight inner decorative frame forming mold according to claim 1, characterized in that, The protrusion has a rectangular cross-section, and the thickness of the rectangular structure is greater than the thickness of the flat top component, which is used to limit the height and thickness of the flat top component.

3. The taillight inner decorative frame forming mold according to claim 1, characterized in that, The protrusion has a triangular cross-section, and the thickness of the triangular structure is greater than the thickness of the flat top component, which is used to restrict the movement of the flat top component in the height and thickness directions.

4. The taillight inner decorative frame forming mold according to claim 1, characterized in that, The bottom of the protrusion is provided with a third groove, and the bottom of the second groove is provided with a pit corresponding to the third groove. The positioning component is located in the third groove. After the flat top component and the pin support component are combined, the positioning component partially falls into the pit under the action of gravity.

5. The taillight inner decorative frame forming mold according to claim 4, characterized in that, A magnet is provided at the bottom of the recess to draw part of the positioning component into the recess.

6. The taillight inner decorative frame forming mold according to claim 4, characterized in that, The bottom of the third groove is provided with a blind hole, and a spring is provided in the blind hole for pushing the positioning component into the recess.

7. The taillight inner decorative frame forming mold according to claim 4, characterized in that, The pin support component is located at the bottom of the second groove and has a fourth groove parallel to the length direction of the second groove. The bottom of the protrusion has a fifth groove corresponding to the fourth groove. The bottom of the positioning component has a sixth groove corresponding to the fourth groove. The tool is placed in the fourth and sixth grooves and the positioning component is pushed upward to push the positioning component into the protrusion, thereby releasing the width direction limitation of the flat top component.

8. The taillight inner decorative frame forming mold according to claim 1, characterized in that, The flat-top component has guide angles on both sides near the first and second grooves.

9. The taillight inner decorative frame forming mold according to claim 1, characterized in that, The cross-section of the positioning component is either circular or a regular polygon, one of the following.

10. The taillight inner decorative frame forming mold according to claim 1, characterized in that, The bottom of the needle support component is provided with a hanging platform, which is located in the stepped hole of the ejector plate.

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