Motorcycle headlamp tooth-shaped light guide strip precision injection mold

Abstract

The utility model provides a kind of motorcycle headlamp dentiform light bar precision injection mold, belong to mould technical field.It includes upper die plate and lower die plate, the upper die plate and lower die plate between symmetrically provided with two light bar forming cavity, the upper die plate and lower die plate between there is oblique connecting surface, the light bar forming cavity is set on oblique connecting surface.Mold is set oblique connecting surface between upper die plate and lower die plate, and light bar forming cavity is set on it, cooperate with oblique guiding translation core-pulling mechanism and buffer type glue feeding structure, so that the inclined requirement of forming core strip can be adapted light bar forming cavity, buffer type glue feeding structure realizes double forming cavity synchronous glue supply, this design optimizes lower die plate structure, avoids the special requirement of core-pulling mechanism oblique setting to die plate, reduces lower die plate design cost, while improving light bar forming efficiency and consistency.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a precision injection mold for a toothed light guide strip for a motorcycle headlight. Background Technology

[0002] Motorcycle headlight toothed light guides are usually made using injection molding. To meet the forming requirements of the toothed structure of the light guide, existing molds require a core-pulling mechanism that is inclined and inserted into the forming cavity. The inclined arrangement of this core-pulling mechanism greatly restricts the overall structural design of the lower mold, which not only increases the design complexity of the lower mold, but also significantly increases its processing difficulty and manufacturing cost.

[0003] For example, a Chinese patent discloses a light guide strip injection mold [application number: 201720534865.5], which includes a fixed mold, a moving mold, a fixed plate, and a mold base connected in sequence. The fixed mold is provided with a cavity, and the moving mold is provided with a core on the end face opposite to the fixed mold. The core and the cavity are engaged to form a mold cavity. The core includes a molding block slidably connected to the moving mold and a molding plate abutting against the molding block. The end face opposite to the molding plate is provided with a molding groove for molding a connecting block. The molding block is inclined toward the side away from the center of the moving mold. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a precision injection mold for a toothed light guide strip for a motorcycle headlight.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A precision injection mold for a toothed light guide strip in a motorcycle headlight includes an upper mold plate and a lower mold plate. Two light guide strip forming cavities are symmetrically arranged between the upper and lower mold plates. An inclined connecting surface is provided between the upper and lower mold plates. The light guide strip forming cavities are located on the inclined connecting surface. Two forming core strips are also provided in the light guide strip forming cavities, which are inclinedly inserted from the lower end of the cavities. The lower mold plate is also provided with an inclined guide translation core pulling mechanism connected to the forming core strips in the two light guide strip forming cavities. A buffered glue injection structure is also provided on the inclined connecting surface. The buffered glue injection structure is located between the two light guide strip forming cavities and connected to them.

[0006] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the oblique guide translational core-pulling mechanism includes a core strip mounting seat that is slidably disposed at the bottom of the inclined connecting surface via a first limiting structure. The bottom ends of the molded core strips in the two light guide strip molding cavities are fixedly connected to the core strip mounting seat. A core-pulling slider is also slidably connected to the horizontal surface of the lower template via a second limiting structure. The core-pulling slider is connected to the core strip mounting seat via an oblique guide connecting structure.

[0007] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the oblique guide connection structure includes a T-shaped pull-out slider on the inclined surface at the top of the core-pulling slider and a T-shaped pull-out groove inclined at the bottom of the core strip mounting seat. The T-shaped pull-out slider is inserted into the T-shaped pull-out groove, and the horizontal movement of the core-pulling slider can drive the core strip mounting seat to move obliquely along the axial direction of the formed core strip.

[0008] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the first limiting structure includes two first limiting pressure plates disposed at the bottom of the inclined connecting surface. The two first limiting pressure plates are respectively disposed on both sides of the core strip mounting seat. The core strip mounting seat has protruding first limiting sliders that are inserted between the first limiting pressure plates and the inclined connecting surface.

[0009] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the second limiting structure includes two second limiting pressure plates disposed on the horizontal surface of the lower template. The two second limiting pressure plates are respectively disposed on both sides of the core-pulling slider. The core-pulling slider has protruding second limiting sliders that are inserted between the second limiting pressure plates and the horizontal surface of the lower template.

[0010] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, an anti-retraction block is also fixedly connected to the upper template, and the inner end face of the anti-retraction block can abut against the outer end face of the core-pulling slider.

[0011] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the inner end face of the anti-retraction block and the outer end face of the core-pulling slider are both inclined.

[0012] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the buffered injection structure includes a main injection channel recessed inward on the inclined connecting surface. The main injection channel is connected to two light guide strip molding cavities through two outlet channels, and the injection port of the main injection channel is located below the outlet channels.

[0013] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the light guide strip forming cavity is composed of a light guide part forming part, a light guide strip mounting plate forming part, and two light guide strip clip plate forming parts.

[0014] In the aforementioned precision injection mold for the toothed light guide strip of a motorcycle headlight, the light guide strip mounting plate forming part is located inside the light guide part forming part, and the light guide strip buckle plate forming part is located outside the light guide part forming part.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. The mold is designed with an inclined connecting surface between the upper and lower mold plates, and the light guide strip forming cavity is placed on it. With the inclined guide translation core pulling mechanism and the buffered glue injection structure, the forming core strip can be adapted to the inclined requirements of the light guide strip forming cavity. The buffered glue injection structure realizes the synchronous glue supply of the two forming cavities. This design optimizes the structure of the lower mold plate, avoids the special requirements of the mold plate for the inclined setting of the core pulling mechanism, reduces the design cost of the lower mold plate, and improves the forming efficiency and consistency of the light guide strip.

[0016] 2. The inclined guide translational core-pulling mechanism adopts a separate design for the core strip mounting seat and the core-pulling slider. Through the linkage of the inclined guide connection structure, the core strip mounting seat slides along the inclined connection surface, while the core-pulling slider slides along the horizontal surface of the lower mold plate, converting the horizontal core-pulling action into the inclined movement of the core strip mounting seat. This structure avoids the complex modifications to the lower mold plate required by traditional inclined core-pulling mechanisms, simplifies the mold structure, reduces processing difficulty, and simultaneously ensures the stability and accuracy of the core strip pulling action.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a structural diagram of the lower template; Figure 3 This is a partial structural diagram of the lower template; Figure 4 This is a schematic diagram of the oblique guide translational core-pulling mechanism. Detailed Implementation

[0019] like Figures 1-4 As shown, a precision injection mold for a toothed light guide strip for a motorcycle headlight includes an upper mold plate 1 and a lower mold plate 2. Two light guide strip forming cavities 3 are symmetrically arranged between the upper mold plate 1 and the lower mold plate 2. An inclined connecting surface 4 is provided between the upper mold plate 1 and the lower mold plate 2. The light guide strip forming cavities 3 are disposed on the inclined connecting surface 4. Two forming core strips 5 are also provided in the light guide strip forming cavities 3, which are inclinedly inserted from the lower end of the light guide strip forming cavities 3. The lower mold plate 2 is also provided with an inclined guide translation core pulling mechanism 6 connected to the forming core strips 5 in the two light guide strip forming cavities 3. A buffered glue injection structure 7 is also provided on the inclined connecting surface 4. The buffered glue injection structure 7 is disposed between the two light guide strip forming cavities 3 and connected to the two light guide strip forming cavities 3.

[0020] In this invention, the mold has an inclined connecting surface between the upper and lower mold plates, on which the light guide strip forming cavity is located. Combined with the inclined guide translation core pulling mechanism and the buffered glue injection structure, the forming core strip can be adapted to the inclined requirements of the light guide strip forming cavity. The buffered glue injection structure enables simultaneous glue supply to the two forming cavities. This design optimizes the structure of the lower mold plate, avoids the special requirements of the mold plate for the inclined setting of the core pulling mechanism, reduces the design cost of the lower mold plate, and improves the forming efficiency and consistency of the light guide strip.

[0021] Specifically, the oblique guide translational core-pulling mechanism 6 includes a core strip mounting seat 8 slidably disposed at the bottom of the inclined connecting surface 4 via a first limiting structure. The bottom ends of the formed core strips 5 in the two light guide strip forming cavities 3 are fixedly connected to the core strip mounting seat 8. A core-pulling slider 9 is also slidably connected to the horizontal surface of the lower template 2 via a second limiting structure. The core-pulling slider 9 is connected to the core strip mounting seat 8 via an oblique guide connecting structure. The oblique guide translational core-pulling mechanism adopts a separate design of the core strip mounting seat and the core-pulling slider. Through the linkage of the oblique guide connecting structure, the core strip mounting seat slides along the inclined connecting surface, and the core-pulling slider slides along the horizontal surface of the lower template, converting the horizontal core-pulling action into the oblique movement of the core strip mounting seat. This structure avoids the complex modification of the lower template required by traditional oblique core-pulling mechanisms, simplifies the mold structure, reduces processing difficulty, and ensures the stability and accuracy of the core strip pulling action.

[0022] Specifically, the oblique guide connection structure includes a T-shaped pull-out slider 10 disposed on the inclined surface at the top of the core-pulling slider 9 and a T-shaped pull-out groove 11 disposed at the bottom of the core strip mounting seat 8. The T-shaped pull-out slider 10 is inserted into the T-shaped pull-out groove 11. The horizontal movement of the core-pulling slider 9 can drive the core strip mounting seat 8 to move obliquely along the axial direction of the formed core strip 5. The oblique guide connection structure adopts the cooperation of the T-shaped pull-out slider and the T-shaped pull-out groove, so that the horizontal movement of the core-pulling slider can stably drive the core strip mounting seat to move obliquely along the axial direction of the formed core strip. The guiding and limiting function of the T-shaped structure ensures the synchronization and reliability of the two linkages, avoids jamming or deviation during the core-pulling process, improves the accuracy of core-pulling and core-insertion of the formed core strip, and ensures the forming quality of the light guide strip.

[0023] Specifically, the first limiting structure includes two first limiting pressure plates 12 disposed at the bottom of the inclined connecting surface 4. The two first limiting pressure plates 12 are respectively disposed on both sides of the core strip mounting base 8. The core strip mounting base 8 has first limiting sliders 13 protruding from both sides and inserted between the first limiting pressure plates 12 and the inclined connecting surface 4. The first limiting structure forms lateral limiting of the core strip mounting base through the two first limiting pressure plates. The first limiting sliders of the core strip mounting base are embedded between the pressure plates and the inclined connecting surface. This design provides precise guidance for the inclined movement of the core strip mounting base, limits its lateral offset, ensures that the core strip mounting base moves stably along the set trajectory, and further improves the fitting accuracy between the molded core strip and the molding cavity.

[0024] Specifically, the second limiting structure includes two second limiting pressure plates 14 disposed on the horizontal surface of the lower template 2. The two second limiting pressure plates 14 are respectively disposed on both sides of the core-pulling slider 9. Second limiting sliders 15 protrude from both sides of the core-pulling slider 9 and are inserted between the second limiting pressure plates 14 and the horizontal surface of the lower template 2. The second limiting structure uses two second limiting pressure plates to limit the core-pulling slider on both sides. The second limiting sliders of the core-pulling slider are embedded between the pressure plates and the horizontal surface of the lower template. This structure ensures the straightness and stability of the horizontal movement of the core-pulling slider, preventing it from wobbling or deviating during movement. This provides a foundation for reliable linkage of the oblique guide connection structure, ensuring smooth and precise core-pulling action.

[0025] Preferably, an anti-retraction block 16 is also fixedly connected to the upper template 1. The inner end face of the anti-retraction block 16 can abut against the outer end face of the core-pulling slider 9. Both the inner end face of the anti-retraction block 16 and the outer end face of the core-pulling slider 9 are inclined. The anti-retraction block fixed to the upper template can abut against the outer end face of the core-pulling slider. During the mold closing and injection molding process, it can effectively limit the retraction movement of the core-pulling slider, avoid the displacement of the core-pulling slider due to injection pressure, and prevent it from affecting the positional accuracy of the molded core strip. This ensures the stability of the light guide strip molding dimensions and improves the reliability of the mold operation.

[0026] Specifically, the buffered glue-feeding structure 7 includes a main glue-feeding channel 17 recessed inward on the inclined connecting surface 4. The main glue-feeding channel 17 is connected to two light guide strip forming cavities 3 via two glue-outing channels 18, respectively. The glue inlet 19 of the main glue-feeding channel 17 is located below the glue-outing channels 18. The buffered glue-feeding structure, through the cooperation of the main glue-feeding channel and the two glue-outing channels, achieves synchronous glue supply to the dual light guide strip forming cavities. The design of the glue inlet located below the glue-outing channels forms a glue-feeding buffer. This structure solves the problem of uneven glue supply that may occur with traditional glue-feeding, allowing the molten glue to fill the two forming cavities evenly, improving the consistency of light guide strip forming, and reducing pressure loss during the molten glue flow process, thus ensuring forming quality.

[0027] Specifically, the light guide strip forming cavity 3 consists of a light guide portion forming part 20, a light guide strip mounting plate forming part 21, and two light guide strip snap-fit ​​plate forming parts 22. This integrated forming of the light guide strip body with the mounting and snap-fit ​​structure eliminates subsequent assembly processes, simplifies the production process, improves the overall integrity and assembly precision of the light guide strip structure, and reduces production costs.

[0028] Specifically, the light guide strip mounting plate forming part 21 is located inside the light guide section forming part 20, and the light guide strip snap-on plate forming part 22 is located outside the light guide section forming part 20. This layout, with the light guide strip mounting plate forming part inside the light guide section forming part and the light guide strip snap-on plate forming part outside, conforms to the actual assembly requirements and stress characteristics of the light guide strip. This design ensures that the structural positions of the formed light guide strip are reasonable, and that the stress is evenly distributed during installation. This improves the assembly compatibility and stability of the light guide strip with the motorcycle headlight, ensuring the structural reliability of the light guide strip during use.

[0029] The working principle of this utility model is as follows: the mold sets an inclined connecting surface between the upper and lower mold plates, and places the light guide strip forming cavity on it. With the cooperation of the inclined guide translation core pulling mechanism and the buffered glue injection structure, the forming core strip can be adapted to the inclined requirements of the light guide strip forming cavity. The buffered glue injection structure realizes the synchronous glue supply of the two forming cavities. This design optimizes the structure of the lower mold plate, avoids the special requirements of the mold plate for the inclined setting of the core pulling mechanism, reduces the design cost of the lower mold plate, and improves the forming efficiency and consistency of the light guide strip. The inclined guide translational core pulling mechanism adopts a separate design of core strip mounting seat and core pulling slider. Through the linkage of the inclined guide connection structure, the core strip mounting seat slides along the inclined connection surface, and the core pulling slider slides along the horizontal surface of the lower template, converting the horizontal core pulling action into the inclined movement of the core strip mounting seat. This structure avoids the complex modifications to the lower mold plate required by traditional oblique core-pulling mechanisms, simplifies the mold structure, reduces processing difficulty, and ensures the stability and accuracy of the core-pulling action. The oblique guide connection structure adopts a T-shaped pull-out slider and a T-shaped pull-out groove, allowing the horizontal movement of the core-pulling slider to stably drive the core-strip mounting seat to tilt along the axial direction of the formed core-strip. The guiding and limiting function of the T-shaped structure ensures the synchronization and reliability of the two linkages, avoiding jamming or offset during the core-pulling process, improving the accuracy of core-pulling and core insertion, and ensuring the forming quality of the light guide strip. The first limiting structure forms lateral limiting on the core-strip mounting seat through two first limiting pressure plates. The first limiting slider of the core-strip mounting seat is embedded between the pressure plate and the oblique connecting surface. This design provides precise guidance for the tilting movement of the core-strip mounting seat and limits the movement of the core-strip mounting seat. Its lateral offset ensures that the core strip mounting seat moves stably along the set trajectory, further improving the fitting accuracy between the molded core strip and the molding cavity. The second limiting structure uses two second limiting pressure plates to limit the core-pulling slider on both sides. The second limiting slider of the core-pulling slider is embedded between the pressure plate and the horizontal plane of the lower template. This structure ensures the straightness and stability of the horizontal movement of the core-pulling slider, avoiding swaying or deviation during movement. It provides a basis for the reliable linkage of the oblique guide connection structure, ensuring the smoothness and accuracy of the core-pulling action. The anti-retraction block fixed to the upper template can abut against the outer end face of the core-pulling slider. During the mold closing and injection process, it can effectively limit the retraction movement of the core-pulling slider, avoid the displacement of the core-pulling slider due to injection pressure, and avoid affecting the positional accuracy of the molded core strip. It ensures the stability of the light guide strip molding size and improves the reliability of the mold operation. The buffered glue inlet structure, through the cooperation of the main glue inlet channel and two glue outlet channels, achieves synchronous glue supply to the dual light guide strip molding cavities. The design of the glue inlet being located below the glue outlet creates a glue inlet buffer. This structure solves the problem of uneven glue supply that may occur with traditional glue inlets, ensuring that the molten glue evenly fills the two molding cavities, improving the consistency of light guide strip molding, and reducing pressure loss during the molten glue flow process to guarantee molding quality. The light guide strip molding cavity consists of a light guide section molding section, a light guide strip mounting plate molding section, and two light guide strip snap-fit ​​plate molding sections, realizing the integration of the light guide strip body with the mounting plate. The integrated molding of the snap-fit ​​structure eliminates subsequent assembly processes, simplifies the production process, improves the overall integrity and assembly precision of the light guide strip, and reduces production costs. The layout of the light guide strip mounting plate forming part located inside the light guide forming part and the light guide strip snap-fit ​​plate forming part located outside the light guide strip conforms to the actual assembly requirements and stress characteristics of the light guide strip. This design ensures that the structural positions of the formed light guide strip are reasonable, and the stress is evenly distributed during installation, improving the assembly compatibility and stability of the light guide strip with the motorcycle headlight, and ensuring the structural reliability of the light guide strip during use.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A precision injection mold for a toothed light guide strip of a motorcycle headlight, comprising an upper mold plate (1) and a lower mold plate (2), wherein two light guide strip forming cavities (3) are symmetrically arranged between the upper mold plate (1) and the lower mold plate (2), characterized in that, The upper template (1) and the lower template (2) have an inclined connecting surface (4). The light guide strip forming cavity (3) is set on the inclined connecting surface (4). The light guide strip forming cavity (3) is also provided with two forming core strips (5) that are inclinedly inserted from the lower end of the light guide strip forming cavity (3). The lower template (2) is also provided with an inclined guide translation core pulling mechanism (6) that is connected to the forming core strips (5) in the two light guide strip forming cavities (3). The inclined connecting surface (4) is also provided with a buffer glue injection structure (7). The buffer glue injection structure (7) is set between the two light guide strip forming cavities (3) and connected to the two light guide strip forming cavities (3).

2. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 1, characterized in that, The oblique guide translation core pulling mechanism (6) includes a core strip mounting seat (8) that is slidably set at the bottom of the inclined connecting surface (4) through a first limiting structure. The bottom ends of the formed core strips (5) in the two light guide strip forming cavities (3) are fixedly connected to the core strip mounting seat (8). The lower template (2) is also slidably connected to a core pulling slider (9) through a second limiting structure. The core pulling slider (9) is connected to the core strip mounting seat (8) through an oblique guide connecting structure.

3. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 2, characterized in that, The oblique guide connection structure includes a T-shaped pull slider (10) set on the inclined surface at the top of the core-pulling slider (9) and a T-shaped pull groove (11) set at the bottom of the core strip mounting seat (8). The T-shaped pull slider (10) is inserted into the T-shaped pull groove (11). The horizontal movement of the core-pulling slider (9) can drive the core strip mounting seat (8) to move obliquely along the axial direction of the formed core strip (5).

4. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 3, characterized in that, The first limiting structure includes two first limiting pressure plates (12) set at the bottom of the inclined connecting surface (4). The two first limiting pressure plates (12) are respectively set on both sides of the core strip mounting base (8). The core strip mounting base (8) has protruding first limiting sliders (13) that are inserted between the first limiting pressure plates (12) and the inclined connecting surface (4).

5. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 3, characterized in that, The second limiting structure includes two second limiting pressure plates (14) set on the horizontal surface of the lower template (2). The two second limiting pressure plates (14) are respectively set on both sides of the core-pulling slider (9). The core-pulling slider (9) has protruding second limiting sliders (15) that are inserted between the second limiting pressure plates (14) and the horizontal surface of the lower template (2).

6. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 3, characterized in that, An anti-retraction block (16) is also fixedly connected to the upper template (1), and the inner end face of the anti-retraction block (16) can abut against the outer end face of the core-pulling slider (9).

7. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 6, characterized in that, The inner end face of the anti-retraction block (16) and the outer end face of the core-pulling slider (9) are both inclined.

8. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 1, characterized in that, The buffered glue inlet structure (7) includes a main glue inlet channel (17) recessed inward on the inclined connecting surface (4). The main glue inlet channel (17) is connected to two light guide strip forming cavities (3) through two glue outlet channels (18). The glue inlet (19) of the main glue inlet channel (17) is located below the glue outlet channel (18).

9. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 1, characterized in that, The light guide strip forming cavity (3) consists of a light guide part forming part (20), a light guide strip mounting plate forming part (21), and two light guide strip buckle plate forming parts (22).

10. The precision injection mold for the toothed light guide strip of a motorcycle headlight according to claim 9, characterized in that, The light guide strip mounting plate forming part (21) is located inside the light guide part forming part (20), and the light guide strip buckle plate forming part (22) is located outside the light guide part forming part (20).

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