Forming die for special-shaped tail lamp housing
By using a design that links the core-pulling insert with the inclined sliding groove component in the irregular taillight cover mold, the problems of high mold cost and unsmooth demolding during the demolding process are solved, achieving efficient and economical demolding effect, and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520387523.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing irregular taillight cover molds suffer from increased mold costs and unsuccessful demolding due to obstruction of the inclined ejector mechanism or the need for a larger template size in the slider structure during the demolding process.
The core-pulling action is achieved by linking the core-pulling insert with the sliding component with the inclined groove and combining it with the opening and closing movement of the support plate. This avoids interference from the groove structure, reduces the number of mold parts and assembly complexity, and achieves core pulling through the internal movement of the mold.
It improves the success rate of demolding, reduces mold manufacturing costs, enhances production efficiency and product quality, simplifies maintenance, and improves the reliability and service life of molds.
Smart Images
Figure CN223934049U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold production technology, and in particular to a molding die for an irregularly shaped taillight cover. Background Technology
[0002] Automotive taillights are an important component of vehicle lighting and signaling systems. Their housings are typically made of highly transparent plastic materials to ensure good optical performance and structural strength. Irregularly shaped taillight housings, due to their complex design and functional requirements, place higher demands on the precision and craftsmanship of the molds during the molding process. To achieve efficient production of irregularly shaped taillight housings, injection molding is usually employed, using specialized molding dies.
[0003] The molding die for irregularly shaped taillight covers mainly consists of a moving mold, a fixed mold, an ejection mechanism, and a cooling system. To ensure the product's appearance quality and assembly accuracy, the mold must have a high-precision cavity design, and the ejection mechanism must be rationally designed during demolding to avoid product deformation or damage. For the special structure of irregularly shaped taillight covers, such as complex curved surfaces, claw structures, and hole designs, existing molds generally use a slanted ejector mechanism for demolding.
[0004] like Figure 1 As shown in the schematic diagram of the irregular taillight cover, the claw structure has holes. Usually, demolding of such holes requires a slanted ejector mechanism or a slider structure. However, in this case, there is a groove structure around the irregular taillight cover, which obstructs the slanted ejector during the ejection process, making it impossible to demold smoothly. Since the depth of the holes in the product is relatively deep, if a conventional slider structure is used, the mold plate size needs to be increased, which will increase the mold cost.
[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 molding die for irregularly shaped taillight covers, 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 mold for forming an irregularly shaped taillight cover, comprising: a fixed mold assembly, a moving mold assembly, a core-pulling assembly, and an ejection assembly;
[0008] A cavity structure corresponding to the product shape is provided between the fixed mold assembly and the moving mold assembly; the core-pulling assembly is used to pull out the undercut glue position on the product, and the ejection assembly is used to eject the product from the moving mold assembly after the mold is opened;
[0009] The moving mold assembly includes a moving template and a support plate, and the support plate and the moving template move together in the mold opening direction.
[0010] The core-pulling assembly includes a core-pulling insert that passes through the moving template and is opposite to the product claw hole, and a sliding assembly disposed on the outside of the moving template. The sliding assembly is provided with an inclined groove adapted to the core-pulling insert. One end of the sliding assembly is connected to the support plate. The opening and closing of the support plate drives the core-pulling insert to move along the inclined groove, so that the core-pulling insert moves closer to or away from the glue position of the claw.
[0011] Furthermore, the sliding assembly includes a fixed base, a sliding base, and a connector;
[0012] The fixed seat is disposed on the moving template, and the sliding seat is slidably disposed within the fixed seat. One end of the connector is connected to the sliding seat, and the other end is connected to the support plate. The connector drives the sliding seat to slide along the fixed seat.
[0013] Furthermore, a guide groove is provided vertically between the fixed seat and the sliding seat to control the sliding path of the sliding seat.
[0014] Furthermore, the guide groove is one of a T-groove, a dovetail groove, and a circular arc groove.
[0015] Furthermore, a gap is provided between the sliding seat and the moving template.
[0016] Furthermore, the angle of the inclined groove is 5° to 35°.
[0017] Furthermore, the connector has a slider at the top and a second groove corresponding to the slider at the bottom.
[0018] Furthermore, the connector has a second protrusion on the side near the support plate, and the support plate has a second groove. The second protrusion is located in the second groove and is locked with the connector.
[0019] Furthermore, the fixed base has a first protrusion on the side near the moving template, and the moving template has a first groove. The first protrusion is disposed in the first groove and locked with a locking member.
[0020] Furthermore, the contact surfaces of the sliding seat and the fixed seat are provided with oil grooves, and the oil grooves contain solid grease.
[0021] The beneficial effects of this utility model are as follows:
[0022] This utility model links the core-pulling insert with an external sliding component with an inclined groove. The opening and closing motion of the support plate simultaneously drives the core-pulling action. During the ejection process, the core-pulling insert moves smoothly backward along the inclined groove, ensuring effective removal of the glue position of the claw in the deep hole, avoiding product deformation or tearing, and improving the demolding success rate.
[0023] This invention combines the core-pulling action with the support plate movement, realizing a multi-functional integrated design of the mechanism, reducing the number of mold parts and assembly complexity, lowering maintenance difficulty, and enhancing action coordination to improve production efficiency. Attached Figure Description
[0024] 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.
[0025] Figure 1 This is a schematic diagram of the structure of the irregularly shaped taillight cover in the background art;
[0026] Figure 2 A schematic diagram of the mold for forming irregularly shaped taillight covers;
[0027] Figure 3 This is a schematic diagram of the sliding component.
[0028] Figure 4 This is an exploded view of the sliding component;
[0029] Figure 5 This is a magnified view of a portion of the moving template located in the first groove;
[0030] Figure 6 This is a magnified view of the bearing plate located at the second groove.
[0031] Figure 7 This is a schematic diagram of the sliding assembly in the combined state of the support plate and the moving template;
[0032] Figure 8 This is a schematic diagram of the sliding assembly in the open state of the support plate and the moving template.
[0033] Reference numerals: 1. Fixed mold assembly; 2. Moving mold assembly; 21. Moving mold plate; 211. First groove; 22. Support plate; 221. Second groove; 3. Core-pulling assembly; 31. Core-pulling insert; 32. Sliding assembly; 321. Fixed base; 321a. Guide groove; 321b. First protrusion; 322. Sliding base; 322a. Inclined slide groove; 322b. Second slide groove; 322c. Oil groove; 323. Connector; 323a. Slider; 323b. Second protrusion; 4. Ejection assembly;
[0034] 01. Irregularly shaped taillight cover; 011. Claw structure; 011a. Hole position; 012. Groove structure. Detailed Implementation
[0035] 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.
[0036] 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.
[0037] 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.
[0038] like Figures 2 to 8 As shown: A mold for forming an irregularly shaped taillight cover includes: a fixed mold assembly 1, a moving mold assembly 2, a core-pulling assembly 3, and an ejection assembly 4;
[0039] A cavity structure corresponding to the product shape is provided between the fixed mold assembly 1 and the moving mold assembly 2; the core pulling assembly 3 is used to pull out the undercut glue position on the product, and the ejection assembly 4 is used to eject the product from the moving mold assembly 2 after the mold is opened.
[0040] The moving mold assembly 2 includes a moving mold plate 21 and a support plate 22, and the support plate 22 and the moving mold plate 21 move together and open and close along the mold opening direction;
[0041] The core-pulling assembly 3 includes a core-pulling insert 31 that passes through the moving template 21 and is opposite to the product claw hole 011a, and a sliding assembly 32 disposed on the outside of the moving template 21. The sliding assembly 32 is provided with an inclined slide groove 322a adapted to the core-pulling insert 31. One end of the sliding assembly 32 is connected to the support plate 22. The opening and closing of the support plate 22 drives the core-pulling insert 31 to move along the inclined slide groove 322a, so that the core-pulling insert 31 moves closer to or away from the glue position of the claw.
[0042] By linking the core-pulling insert 31 with the sliding component 32 featuring the inclined groove 322a, the opening and closing motion of the bearing plate 22 simultaneously drives the core-pulling action, thus solving the interference problem of the groove structure 012 on the inclined ejector mechanism. By placing the sliding component 32 on the outside of the moving template 21, compared to the conventional slider 323a structure, it eliminates the need for a larger template size, thereby reducing mold manufacturing costs and improving economic efficiency. Furthermore, it eliminates the need for additional template dimensions (as traditional slider structures require larger templates when placed inside the template), directly achieving core pulling through internal mold movement, significantly reducing mold manufacturing costs. The structure is simple and easy to install.
[0043] The mechanical linkage mechanism between the inclined slide 322a and the support plate 22 makes the movement trajectory of the core-pulling insert 31 precise and controllable. During the ejection process, the core-pulling insert 31 moves smoothly backward along the inclined slide 322a, which can avoid the obstruction of the surrounding grooves and ensure the effective removal of the glue position of the claw at the deep hole position 011a, avoiding product deformation or tearing, and greatly improving the demolding success rate.
[0044] It should be noted that this product contains a moving mold insert that needs to be pulled out first, so a support plate 22 is required. The power of the sliding component 32 is placed on the support plate 22, so that the moving mold core pulling and the slider core pulling insert 31 share a support plate. The core pulling action is combined with the movement of the support plate 22, realizing a multi-functional integrated design of one mechanism, reducing the number of mold parts and assembly complexity, reducing maintenance difficulty, and enhancing action coordination to improve production efficiency.
[0045] This solution optimizes the demolding method, ensuring that the core-pulling insert 31 can smoothly move away from the product when the mold is opened, avoiding product damage caused by forced demolding; the sliding component 32 is driven by the support plate 22, making the core-pulling process more stable, which helps to improve production efficiency and product quality.
[0046] As a preferred embodiment of the above, the sliding component 32 includes a fixed base 321, a sliding base 322, and a connector 323;
[0047] The fixed seat 321 is set on the moving template 21, and the sliding seat 322 is slidably set inside the fixed seat 321. One end of the connecting piece 323 is connected to the sliding seat 322, and the other end is connected to the support plate 22. The connecting piece 323 drives the sliding seat 322 to slide along the fixed seat 321. Specifically, through the combination structure of the fixed seat 321 and the sliding seat 322, it is ensured that the sliding seat 322 can slide smoothly along the fixed seat 321, avoiding the impact on the demolding effect due to uneven force or deviation of the movement trajectory; making the movement of the sliding component 32 more precise, ensuring that the core-pulling insert 31 moves along the predetermined trajectory during the mold opening and closing process, improving the reliability of the mold. The structure is simple and easy to install. Since the fixed seat 321 and the sliding seat 322 are modularly designed, when the sliding component 32 is worn or damaged, the sliding seat 322 or the connecting piece 323 can be replaced separately without replacing the entire core-pulling mechanism, thereby reducing maintenance costs and improving the maintainability of the mold.
[0048] In this embodiment, a guide groove 321a is provided vertically between the fixed seat 321 and the sliding seat 322 to control the sliding path of the sliding seat 322.
[0049] Among them, the guide groove 321a is a T-shaped groove, a dovetail groove, and an arc groove. In this embodiment, the guide groove 321a is a T-shaped groove. By restricting the guide groove 321a, it is ensured that the sliding seat 322 can move along a predetermined trajectory, avoiding problems such as shaking, tilting, or trajectory deviation, thereby ensuring a smooth demolding process.
[0050] As a preferred embodiment of the above, a gap is provided between the sliding seat 322 and the moving template 21. An appropriate gap design can reduce the direct contact area between the sliding seat 322 and the moving template 21, reduce the coefficient of friction, make the sliding seat 322 smoother during demolding, and avoid sliding difficulties or jamming due to excessive friction.
[0051] In this embodiment, the angle of the inclined slide 322a is 5° to 35°. The angle design of the inclined slide 322a directly affects the movement trajectory of the core-pulling insert 31. A reasonable angle range can ensure that the sliding component 32 can be demolded smoothly without increasing the movement resistance due to an excessively large angle or causing incomplete demolding due to an excessively small angle. The appropriate range is suitable for various depths and shapes of chuck holes 011a, improving the applicability of the mold.
[0052] The connector 323 has a slider 323a at its top and a second groove 322b corresponding to the slider 323a at its bottom. Similarly, the second groove 322b can be a T-shaped groove as shown in the figure or a second groove 322b of other shapes, all of which are within the protection scope of this application. During installation, the slider 323a is installed into the second groove 322b to complete the connection between the connector 323 and the sliding seat 322, which is simple and quick and greatly shortens the installation time. When the connector 323 or the sliding seat 322 is damaged, it can be disassembled and replaced separately without replacing the entire sliding assembly 32, thus reducing maintenance costs.
[0053] As a preferred embodiment of the above embodiment, the connector 323 is provided with a second protrusion 323b on the side near the support plate 22, and the support plate 22 is provided with a second groove 221. The second protrusion 323b is disposed in the second groove 221 and locked with the connector 323. Specifically, since the second protrusion 323b cooperates with the second groove 221, when the support plate 22 drives the connector 323 to move, the force transmission is more uniform, avoiding displacement or structural deformation caused by single-point force; so that the sliding component 32 can still maintain precise demolding movement after long-term use, and improve the service life of the mold.
[0054] In this embodiment, the fixed base 321 is provided with a first protrusion 321b on the side near the moving template 21, and the moving template 21 is provided with a first groove 211. The first protrusion 321b is disposed in the first groove 211 and locked with a locking member. Specifically, through the protrusion-groove cooperation, the fixed base 321 can be accurately positioned on the moving template 21, thereby avoiding displacement or loosening caused by vibration or uneven force during long-term use. The first protrusion 321b is embedded in the first groove 211 to form a mechanical limit, which provides stronger shear and tensile resistance compared to simply relying on screw fixation, and improves the durability of the mold.
[0055] As a preferred embodiment, the contact surfaces of the sliding seat 322 and the fixed seat 321 are provided with oil grooves 322c, and the oil grooves 322c contain solid grease. Specifically, the oil grooves 322c can continuously store lubricating grease to ensure that the sliding seat 322 and the fixed seat 321 always maintain a good lubrication state, thereby reducing frictional resistance, improving the smoothness of the operation of the sliding assembly 32, continuously providing lubrication protection, reducing wear, improving the durability of the mold, and extending its service life.
[0056] 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 molding die for an irregularly shaped taillight cover, characterized in that, include: Fixed mold assembly, moving mold assembly, core-pulling assembly, and ejection assembly; A cavity structure corresponding to the product shape is provided between the fixed mold assembly and the moving mold assembly; the core-pulling assembly is used to pull out the undercut glue position on the product, and the ejection assembly is used to eject the product from the moving mold assembly after the mold is opened; The moving mold assembly includes a moving template and a support plate, and the support plate and the moving template move together in the mold opening direction. The core-pulling assembly includes a core-pulling insert that passes through the moving template and is opposite to the product claw hole, and a sliding assembly disposed on the outside of the moving template. The sliding assembly is provided with an inclined groove adapted to the core-pulling insert. One end of the sliding assembly is connected to the support plate. The opening and closing of the support plate drives the core-pulling insert to move along the inclined groove, so that the core-pulling insert moves closer to or away from the glue position of the claw.
2. The irregular taillight cover molding die according to claim 1, characterized in that, The sliding assembly includes a fixed base, a sliding base, and a connector; The fixed seat is disposed on the moving template, and the sliding seat is slidably disposed within the fixed seat. One end of the connector is connected to the sliding seat, and the other end is connected to the support plate. The connector drives the sliding seat to slide along the fixed seat.
3. The irregular taillight cover molding die according to claim 2, characterized in that, A guide groove is provided vertically between the fixed seat and the sliding seat to control the sliding path of the sliding seat.
4. The irregular taillight cover molding die according to claim 3, characterized in that, The guide groove is one of a T-groove, a dovetail groove, or a circular arc groove.
5. The irregular taillight cover molding die according to claim 2, characterized in that, A gap is provided between the sliding seat and the moving template.
6. The irregular taillight cover molding die according to claim 1, characterized in that, The angle of the inclined slide is 5° to 35°.
7. The irregular taillight cover molding die according to claim 2, characterized in that, The connector has a slider at the top and a second groove corresponding to the slider at the bottom.
8. The irregular taillight cover molding die according to claim 2, characterized in that, The connector has a second protrusion on the side near the support plate, and the support plate has a second groove. The second protrusion is located in the second groove and is locked in place by the connector.
9. The irregular taillight cover molding die according to claim 2, characterized in that, The fixed base has a first protrusion on the side near the moving template, and the moving template has a first groove. The first protrusion is disposed in the first groove and is locked with a locking member.
10. The irregular taillight cover molding die according to claim 2, characterized in that, The sliding seat and the contact surface with the fixed seat are provided with oil grooves, and the oil grooves are filled with solid grease.