Forming die for decorative frame of automobile tail lamp

Abstract

The utility model discloses a forming die for an automobile tail lamp decorative frame, relates to the technical field of forming of the automobile tail lamp decorative frame, and aims to solve the problem that the forming efficiency of the whole automobile tail lamp decorative frame is influenced by uniform-speed die stripping. Double placing plates are installed in the lower mold, the placing plates are pressed through the side jacking columns of the upper mold, then mold closing and injection molding are completed, and meanwhile under pushing of the hydraulic cylinder, the whole first jacking column and the second jacking column push an automobile tail lamp decoration frame formed in the groove to be demolded; after lifting teeth on a first placing plate make contact with limiting toothed plates, a whole second abutting column is pushed in an accelerated mode through a rising collision column, the automobile tail lamp decoration frame is pushed out in an accelerated mode, high-speed discharging of the automobile tail lamp decoration frame after the whole automobile tail lamp decoration frame is formed is facilitated, the forming period is shortened, and the production efficiency of the automobile tail lamp decoration frame is improved; and the time of the whole acceleration push-up step is regulated and controlled.

Description

Technical Field

[0001] This utility model relates to the field of automotive taillight decorative frame molding technology, specifically to a molding die for an automotive taillight decorative frame. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, molds are tools used to create shaped objects. These tools are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of the object by changing the physical state of the material being molded.

[0003] A mold has a specific contour or internal cavity shape. The contour shape with cutting edges allows the blank to be separated along the contour line (punching); the internal cavity shape allows the blank to obtain a corresponding three-dimensional shape. A mold generally consists of two parts: a moving mold and a fixed mold, which can be separated and joined. When separated, the workpiece is removed; when joined, the blank is injected into the mold cavity for shaping. Molds are precision tools with complex shapes, bearing the expansion force of the blank. They have high requirements for structural strength, rigidity, surface hardness, surface roughness, and machining accuracy. The development level of mold manufacturing is an important indicator of the level of mechanical manufacturing. One of the hallmarks; as for the molding of automotive headlight decorative frames, BPT, a high-polymer material, is used. This material has good heat resistance and fluidity, is easy to mold in molds, and has strong adhesion to surface coatings. It is usually used as a decorative frame in lamps. Due to its strong structural design, the overall stability of the mold is poor. In the original mold opening and material removal process, the molded headlight decorative frame is pushed out by the ejector structure in the mold. However, considering whether the structure of the molded headlight decorative frame is completely stable, it is pushed out at a uniform speed, which reduces the overall rate of material removal of the molded headlight decorative frame from the mold surface.

[0004] Therefore, we propose a molding die for automotive taillight decorative frames. Utility Model Content

[0005] The purpose of this utility model is to provide a molding die for a car taillight decorative frame to solve the problem.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a molding die for a car taillight decorative frame, comprising an upper mold platform, a lower mold platform, and limiting posts. The upper mold platform is symmetrically fixed to the top of the limiting posts, and the lower mold platform is slidably connected to the limiting posts. The top of the upper mold platform is fixed to the lower mold by bolts, and the top of the lower mold has a groove.

[0007] A first placement plate is slidably connected inside the lower mold. A second placement plate is installed on the top of the first placement plate. Lifting teeth are symmetrically and movably connected on both sides of the top of the first placement plate. A striking post is symmetrically and slidably connected on both sides of the lifting teeth and on the first placement plate. The side tooth surface of the striking post is engaged with the lifting teeth. A limiting tooth plate is movably connected to the opposite surface of the lower mold. One side of the limiting tooth plate penetrates the lower mold and is fitted with a locking sleeve. One side of the limiting tooth plate is engaged with the lifting teeth.

[0008] Furthermore, a hydraulic cylinder is fixed to the bottom of the lower mold by bolts, and one end of the hydraulic cylinder passes through the lower mold and is fixedly connected to the bottom of the placement plate.

[0009] Furthermore, a support post is installed on the top of the placement plate one, and one end of the support post one passes through the placement plate two and the lower mold and extends to one side of the groove.

[0010] Furthermore, the top of the placement plate one is uniformly fixed with abutment two, one end of the abutment two penetrating the lower mold and extending to the inner wall of the groove.

[0011] Furthermore, a pressing mechanism is fixed to the top of the lower mold platform by bolts, and an upper mold is fixed to the bottom of the lower mold platform by bolts. Top pillars are symmetrically fixed on both sides of the bottom of the upper mold, and one end of the top pillar penetrates the lower mold and abuts against the top of the second placement plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, double placement plates are installed in the lower mold, and the placement plates are pressed by the side top pillars of the upper mold. Then, the mold is closed and injection molding is completed. At the same time, under the push of the hydraulic cylinder, the entire abutment one and abutment two push the molded car taillight decorative frame in the groove to demold. After the lifting teeth on the placement plate one contact the limiting tooth plate, the rising impact pillar accelerates and pushes the entire abutment two, accelerating the ejection of the car taillight decorative frame. This facilitates high-speed unloading of the entire molded car taillight decorative frame, saves the molding cycle, and improves the production efficiency of the car taillight decorative frame. At the same time, by changing the position of the limiting tooth plates on both sides of the lower mold, the time of the entire acceleration and pushing step can be controlled to avoid the deformation of the car taillight decorative frame caused by premature acceleration and pushing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the molding die for the automotive taillight decorative frame of this utility model;

[0015] Figure 2 This is a schematic diagram of the molding die for the automotive taillight decorative frame of this utility model, without the lower mold platform.

[0016] Figure 3This is a schematic diagram of the side section structure of the lower mold of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the upper limit tooth plate of the first placement plate and the bottom of the second placement plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the installation structure of the lifting tooth upper impact column of this utility model.

[0019] In the diagram: 1. Upper mold platform; 2. Lower mold platform; 3. Pressing mechanism; 4. Limiting post; 5. Lower mold; 6. Groove; 7. Hydraulic cylinder; 8. Placement plate one; 9. Lifting tooth; 10. Impact post; 11. Limiting tooth plate; 12. Locking sleeve; 13. Abutment post one; 14. Placement plate two; 15. Abutment post two; 16. Upper mold; 17. Top post. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 This utility model provides a technical solution:

[0022] Accelerated ejection typically refers to the process of ejecting the product from the mold more quickly during the mold opening process by setting appropriate ejection pressure and a slightly faster ejection speed. This can save molding cycles and improve production efficiency. Specific methods include ejection after mold opening or ejection during mold opening. However, whether the product's structure remains stable after cooling and whether accelerated ejection causes product deformation require further research. Figure 1 As shown, the molding die for the entire automotive taillight decorative frame is divided into an upper mold platform 1 and a lower mold platform 2. The upper mold platform 1 is used to fix the lower mold 5 for installation, as shown in the figure. Figure 3 As shown, the upper mold 16 fixed at the bottom of the lower mold platform 2 is a moving mold, responsible for the closure of the entire mold and the construction of the entire injection space for the automotive taillight decorative frame.

[0023] To facilitate demolding of the car taillight decorative frame after injection molding, a second abutment 15 is slidably connected in the groove 6 of the injection space at the top of the lower mold 5. The second abutment 15 is distributed at the turning corner of the car taillight decorative frame, which facilitates the stable ejection of the car taillight decorative frame from the mold and avoids the car taillight decorative frame from breaking during the pushing process due to uneven force.

[0024] like Figure 4 As shown, the second abutment 15 is fixed to the top of the second placement plate 14, and the bottom of the second placement plate 14 is also slidably connected to the first placement plate 8. The two are combined and driven by the hydraulic cylinder 7 installed at the bottom of the lower mold 5. Usually, during the closing process of the upper mold table 1, the second abutment 15 is continuously pushed into the lower mold 5, and finally the complete molding space of the car taillight decorative frame is achieved. The second abutment 15 is located at the position of the groove 6 and will form a dead edge during the injection molding process, but the dead edge is located inside the car taillight decorative frame.

[0025] After the taillight decorative frame is injection molded and cooled, the upper mold 16 is pushed upward by the pressing mechanism 3. The mold opening process is accompanied by the operation of the hydraulic cylinder 7. The hydraulic cylinder 7 pushes the entire placement plate 1 8 upward, which in turn drives the entire placement plate 2 14 to move. The abutments 1 13 and 15 on the placement plates 1 8 and 2 14 begin to push the taillight decorative frame formed in the groove 6 to detach from the lower mold 5. The length of the abutment 2 15 is designed according to the bending angle of the taillight decorative frame. The two abutments on both sides of the placement plate 1 8 are also movable. The moving connection has a lifting tooth 9, which begins to contact the limiting tooth plate 11 fixedly set on both sides of the inner wall of the lower mold 5 during the rising process of the placement plate 18. As the placement plate 18 rises, the entire lifting tooth 9 contacts the limiting tooth plate 11 and rotates. Meanwhile, the impact post 10, which slides on the other side of the placement plate 18, pushes the entire placement plate 2 14 to rise faster under the rotation of the lifting tooth 9. The impact post 2 15 on the placement plate 2 14 accelerates the push of the car taillight decorative frame into the entire groove 6, thereby improving the production efficiency of the entire car taillight decorative frame.

[0026] Considering the differences in cooling and stabilization time of different car taillight decorative frames, the entire accelerated unloading time is controlled by adjusting the position of the limiting tooth plate 11. A locking sleeve 12 is installed on the outside of the lower mold 5, which fixes the position of the limiting tooth plate 11 on the inner wall, thus limiting the entire accelerated unloading time. It can be adjusted later.

[0027] As for the drive of the entire lower mold platform 2, a pressing mechanism 3 is installed on its top. At the same time, the upper mold platform 1 and the lower mold platform 2 are slidably connected by a limit post 4. Meanwhile, the lower mold platform 2 is fixedly installed with an upper mold 16, and top posts 17 are symmetrically fixed on both sides of the upper mold 16. One end of the top post 17 passes through the lower mold 5 and abuts against the top of the second placement plate 14, pushing the entire second placement plate 14 and the first placement plate 8 to move down. Finally, the mold closing process of the upper mold 16 and the lower mold 5 is completed. As the trigger point is the disengagement of the top post 17 from the second placement plate 14, the entire hydraulic cylinder 7 is activated to push the first placement plate 8 to rise.

[0028] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A forming die for automobile taillight decorative frame, comprising an upper die table (1), a lower die table (2) and a limiting column (4), the top of the upper die table (1) is symmetrically fixed with a limiting column (4), and the lower die table (2) is slidably connected to the limiting column (4), characterized in that: The upper mold platform (1) is fixed to the top of the lower mold (5) by bolts, and the top of the lower mold (5) is provided with a molding groove (6); The lower mold (5) is slidably connected to a placement plate one (8), and a placement plate two (14) is installed on the top of the placement plate one (8). Lifting teeth (9) are symmetrically and movably connected on both sides of the top of the placement plate one (8). A striking post (10) is symmetrically and slidably connected on both sides of the lifting tooth (9) and on the placement plate one (8). The side tooth surface of the striking post (10) is engaged with the lifting tooth (9). A limiting tooth plate (11) is movably connected to the opposite surface of the lower mold (5). One side of the limiting tooth plate (11) penetrates the lower mold (5) and is fitted with a locking sleeve (12). One side of the limiting tooth plate (11) is engaged with the lifting tooth (9).

2. The forming mold for an automobile taillight trim frame according to claim 1, characterized by: The bottom of the lower mold (5) is fixed with a hydraulic cylinder (7) by bolts. One end of the hydraulic cylinder (7) passes through the lower mold (5) and is fixedly connected to the bottom of the placement plate (8).

3. The forming mold for an automobile taillight trim frame according to claim 2, characterized by: A support post (13) is installed on the top of the placement plate (8). One end of the support post (13) passes through the placement plate (14) and the lower mold (5) and extends to one side of the groove (6).

4. The molding die for the automotive taillight decorative frame according to claim 3, characterized in that: The top of the placement plate (8) is uniformly fixed with abutment two (15), one end of the abutment two (15) penetrates the lower mold (5) and extends to the inner wall of the groove (6).

5. The molding die for the automotive taillight decorative frame according to claim 4, characterized in that: The top of the lower mold platform (2) is fixed with a pressing mechanism (3) by bolts, and the bottom of the lower mold platform (2) is fixed with an upper mold (16) by bolts. The bottom sides of the upper mold (16) are symmetrically fixed with top columns (17). One end of the top column (17) passes through the lower mold (5) and abuts against the top of the placement plate (14).

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