High-transparency thick-walled motorcycle light guide strip injection molding mold

Abstract

This utility model provides a high-transparency, thick-walled injection molding mold for motorcycle light guide strips, including an upper mold body, a lower mold body, an upper mold top plate, a mold support base plate, a lower mold pad plate, two support seats, and four light guide strip forming parts. It also includes an opening template, multiple core insert rods, and four embedded shaping members. The opening template is mounted on the top of the mold support base plate via the pad plate and is located between the two support seats. Multiple core insert rods are fixedly set at the top of the opening template, and each core insert rod has an insertion part at its top. The four embedded shaping members respectively wrap and shape multiple insertion parts and are embedded in the bottom of the corresponding light guide strip forming cavity. This utility model can better eject the injection-molded light guide strip forming parts. The multiple insertion parts corresponding to a light guide strip forming part are respectively wrapped and shaped by the embedded shaping members, and their positions are relatively fixed. During mold opening and demolding, the stability of movement is guaranteed, facilitating better mold opening.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a high-transparency, thick-walled motorcycle light guide strip injection molding mold. Background Technology

[0002] The headlight light guide is a transparent plastic component with high transparency, used to refract light and create parallel beams of light passing through it. Because the light guide is made of transparent plastic and has a relatively thick wall and long overall dimensions, it is typically produced using injection molding.

[0003] The existing technology, such as the light guide strip injection mold disclosed in patent publication number CN206765275U, has the following key technical points: it 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 block and the molding plate is provided with a molding groove for molding a connecting block. The molding block is tilted away from the center of the moving mold, which makes it easier to remove the injection-molded light guide strip. During the removal of the light guide strip, the connecting block is not easily damaged, thus ensuring the molding rate of the injection mold.

[0004] The disadvantage of the above-disclosed molding die is that during the injection molding stage, since the light guide strip has an undercut part, it is necessary to use a slanted ejector to demold, and an additional demolding mechanism is needed to achieve quick and damage-free demolding, which makes the mold opening inconvenient. To address this, we have designed a high-transparency, thick-walled injection molding die for motorcycle light guide strips. Summary of the Invention

[0005] The purpose of this invention is to provide a high-transparency, thick-walled injection molding die for motorcycle light guide strips, in order to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: a high-transparency, thick-walled motorcycle light guide strip injection molding mold, comprising an upper mold body, a lower mold body, an upper mold top plate, a mold support bottom plate, a lower mold pad, two support seats, and four light guide strip forming parts. A light guide strip forming protrusion is fixedly arranged in the middle of the bottom end of the upper mold body, and four light guide strip forming cavities are formed at the bottom end of the light guide strip forming protrusion. A light guide strip cavity that mates with the light guide strip forming protrusion is formed at the top end of the lower mold body, and four light guide strips are formed in the inner cavity of the light guide strip cavity. Forming cavity two, four light guide strip forming components are located in the mold cavity formed by four light guide strip forming cavities one and four light guide strip forming cavities two; it also includes an opening template, multiple core embedding rods and four embedded bundle members. The opening template is installed on the top of the mold support base plate through a pad and is located between two support seats. Multiple core embedding rods are fixedly set on the top of the opening template. Each core embedding rod has an insertion part at its top. The four embedded bundle members respectively wrap and bundle multiple insertion parts and are embedded in the bottom of the corresponding light guide strip forming cavity two.

[0007] In the aforementioned high-transparency, thick-walled motorcycle light guide injection mold, each of the two ends of the light guide molding cavity 2 has an insert groove, and each of the two ends of the light guide molding cavity 1 has a protrusion corresponding to each insert groove. The purpose of this design is to create an undercut structure between the protrusion and the corresponding insert groove, thus preventing structural interference between the undercut and the cavity during mold opening. This also eliminates the need for an additional inclined ejector mechanism to assist in mold opening, reducing damage to the undercut during the process.

[0008] In the aforementioned high-transparency, thick-walled motorcycle light guide strip injection mold, the upper mold body and the lower mold body are connected by a closed mold. The upper mold top plate is bolted to the top of the upper mold body, and a sprue plate is provided in the middle of the top of the upper mold top plate. The lower mold pad is bolted to the bottom of the lower mold body, and two support seats are fixedly installed on the top of the mold support base plate, and the mold support base plate is bolted to the bottom of the lower mold pad through the two support seats. The purpose of this arrangement is to ensure that the molding mold has good casting effect and firmness.

[0009] In the aforementioned high-transparency, thick-walled motorcycle light guide strip injection mold, a branched flow channel is provided at the center of the light guide strip cavity. The branched flow channel and the four branched ends are respectively connected to the four light guide strip molding cavities through transition grooves. The branched flow channel and the sprue plate are connected through the sprue. The purpose of this design is to facilitate the simultaneous casting of four light guide strip molded parts, greatly improving the efficiency of casting.

[0010] In the aforementioned high-transparency, thick-walled motorcycle light guide strip injection mold, guide pillars are installed on both sides of the top of the mold opening plate. This design ensures that the mold opening plate has good motion and positional accuracy during the mold opening process.

[0011] In the aforementioned high-transparency, thick-walled motorcycle light guide strip injection mold, an inlet valve is installed at the flow channel on the front side of the upper mold body. The purpose of this design is to facilitate the connection of a fluid (such as water or gas) through the inlet valve, enabling heat dissipation from the upper mold and facilitating rapid heat exchange between the upper mold body and the fluid.

[0012] Compared with the prior art, the advantages of this utility model of high-transparency thick-walled motorcycle light guide strip injection molding mold are as follows: By fixing multiple core insert rods at the top of the mold opening plate, each core insert rod has an insertion part at its top. Four embedded bundle members respectively wrap and bundle multiple insertion parts and embed them at the bottom of the corresponding light guide strip molding cavity two. This can better eject the injection-molded light guide strip. The multiple insertion parts corresponding to a light guide strip are wrapped and bundled by the embedded bundle members respectively, and their positions are relatively fixed. During the mold opening and demolding process, the stability of movement is guaranteed, which facilitates better mold opening. At the same time, an insertion groove is opened at both ends of each light guide strip molding cavity two, and a protrusion corresponding to each insertion groove is set at both ends of each light guide strip molding cavity one. The protrusion and the corresponding insertion groove form an undercut structure of the light guide strip molding part. In this way, during the mold opening process, the undercut does not cause structural interference between the cavity and the mold, and there is no need to add an additional inclined ejector mechanism to assist in mold opening, reducing the damage of the undercut during the mold opening process. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the injection molding mold for the high-transparency thick-walled motorcycle light guide strip of this utility model.

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the upper mold of the injection molding die for the high-transparency thick-walled motorcycle light guide strip of this utility model.

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower mold of the injection molding die for the high-transparency thick-walled motorcycle light guide strip of this utility model.

[0016] Figure 4 This is a schematic diagram of the core embedding rod and the template opening of the injection molding mold for the high-transparency thick-walled motorcycle light guide strip of this utility model.

[0017] Figure 5 This is a schematic diagram of the lower mold of the injection molding die for the high-transparency thick-walled motorcycle light guide strip of this utility model.

[0018] Figure 6 This is a schematic diagram of the planar structure of the upper mold of the injection molding die for the high-transparency thick-walled motorcycle light guide strip of this utility model.

[0019] In the diagram, 1. Upper mold body; 2. Lower mold body; 3. Upper mold top plate; 4. Mold support base plate; 5. Lower mold pad; 6. Support seat; 7. Sprue plate; 8. Inlet valve; 9. Light guide strip forming protrusion; 10. Light guide strip forming cavity one; 11. Light guide strip cavity; 12. Light guide strip forming cavity two; 13. Branched flow channel; 14. Embedded groove; 15. Transition groove; 16. Protrusion; 17. Opening mold plate; 18. Core embedding rod; 19. Insertion part; 20. Light guide strip forming part; 21. Embedded bundle part; 22. Guide column. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this utility model relates to an injection molding mold for a high-transparency, thick-walled motorcycle light guide strip.

[0022] The main body of the injection molding mold includes an upper mold body 1, a lower mold body 2, an upper mold top plate 3, a mold support base plate 4, a lower mold pad 5, two support seats 6, and four light guide strip forming parts 20. A light guide strip forming protrusion 9 is fixedly installed in the middle of the bottom end of the upper mold body 1. Four light guide strip forming cavities 10 are opened at the bottom end of the light guide strip forming protrusion 9. A light guide strip cavity 11 that cooperates with the light guide strip forming protrusion 9 is opened at the top end of the lower mold body 2. Four light guide strip forming cavities 12 are opened in the inner cavity of the light guide strip cavity 11. The four light guide strip forming parts 20 are located in the mold cavity formed by the four light guide strip forming cavities 10 and the four light guide strip forming cavities 12.

[0023] The upper mold body 1 and the lower mold body 2 are connected by mold closing. The upper mold top plate 3 is installed on the top of the upper mold body 1 by bolts. A sprue plate 7 is provided in the middle of the top of the upper mold top plate 3. The lower mold pad 5 is installed on the bottom of the lower mold body 2 by bolts. Two support seats 6 are fixedly installed on the top of the mold support base plate 4, and the mold support base plate 4 is connected to the bottom of the lower mold pad 5 by bolts through the two support seats 6.

[0024] A bifurcated flow channel 13 is provided at the center of the inner cavity of the light guide strip cavity 11. The bifurcated flow channel 13 and the four bifurcated ends are respectively connected to the four light guide strip forming cavities 12 through the transition groove 15. The bifurcated flow channel 13 and the sprue plate 7 are connected through the sprue.

[0025] Example 1: It also includes an opening template 17, multiple core embedding rods 18 and four embedded shaping components 21. The opening template 17 is installed on the top of the mold support base plate 4 through a pad and is located between two support seats 6. The multiple core embedding rods 18 are fixedly set on the top of the opening template 17. Each core embedding rod 18 has an insertion part 19 at its top. The four embedded shaping components 21 respectively wrap and shape the multiple insertion parts 19 and are embedded in the bottom of the corresponding light guide strip forming cavity 2 12.

[0026] Furthermore, an embedding groove 14 is provided at both ends of each light guide forming cavity 12, and a protrusion 16 corresponding to each embedding groove 14 is provided at both ends of each light guide forming cavity 10.

[0027] The advantages of this scheme are as follows: multiple insertion parts 19 corresponding to a light guide strip forming part 20 are respectively wrapped and bundled by the embedded binding part 21, which means that the positions of a group of multiple insertion parts 19 are relatively fixed. During the mold opening and demolding process, the stability of movement is guaranteed, which facilitates better mold opening. At the same time, since each light guide strip forming cavity 12 has an embedding groove 14 at both ends, and each light guide strip forming cavity 10 has a protrusion 16 corresponding to each embedding groove at both ends, the protrusion 16 and the corresponding embedding groove 14 form an undercut structure of the light guide strip forming part 20. In this way, during the mold opening process, the undercut does not cause structural interference between the cavity and the mold, and there is no need to add an additional inclined ejector demolding mechanism to assist in mold opening, reducing the damage to the undercut during the mold opening process.

[0028] Among them, the embedded bundle member 21 plays the role of wrapping and bundling multiple insertion parts 19, and can be embedded in the lower mold body 2 and correspond to the light guide strip forming cavity 12, and connected to the formed light guide strip forming member 20.

[0029] Based on Embodiment 1, guide columns 22 are installed on both sides of the top of the mold opening template 17, so that the mold opening template 17 has good motion accuracy during the mold opening movement. The mold opening movement is driven by a crane or cylinder, and the two ends of the mold opening template 17 are connected by a connector.

[0030] Example 2: The above-described repetitive structure will not be repeated. An inlet valve 8 is installed at the flow channel on the front side of the upper mold body 1. The inlet valve 8 facilitates the connection of fluid (which can be water or gas) to achieve heat dissipation of the upper mold body 1, and facilitates rapid heat exchange between the upper mold body 1 and the fluid.

[0031] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention 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 invention or exceeding the scope defined by the appended claims.

Claims

1. A high-transparency, thick-walled motorcycle light guide strip injection molding mold, comprising an upper mold body (1), a lower mold body (2), an upper mold top plate (3), a mold support base plate (4), a lower mold pad plate (5), two support seats (6), and four light guide strip forming parts (20), wherein a light guide strip forming protrusion (9) is fixedly provided at the middle of the bottom end of the upper mold body (1), and four light guide strip forming cavities (10) are opened at the bottom end of the light guide strip forming protrusion (9); a light guide strip cavity (11) that cooperates with the light guide strip forming protrusion (9) is opened at the top end of the lower mold body (2), and four light guide strip forming cavities (12) are opened in the inner cavity of the light guide strip cavity (11); the four light guide strip forming parts (20) are located in the mold cavity formed by the four light guide strip forming cavities (10) and the four light guide strip forming cavities (12), characterized in that: It also includes an opening template (17), multiple core insert rods (18) and four embedded bundle members (21). The opening template (17) is installed on the top of the mold support base plate (4) through a pad and is located between two support seats (6). Multiple core insert rods (18) are fixedly set on the top of the opening template (17). Each core insert rod (18) has an insertion part (19) at its top. The four embedded bundle members (21) respectively wrap and bundle multiple insertion parts (19) and are embedded in the bottom of the corresponding light guide strip forming cavity two (12).

2. The injection molding mold for high-transparency thick-walled motorcycle light guide strips according to claim 1, characterized in that, Each of the two ends of the second light guide cavity (12) is provided with an embedding groove (14), and each of the two ends of the first light guide cavity (10) is provided with a protrusion (16) corresponding to each embedding groove (14).

3. The injection molding mold for high-transparency thick-walled motorcycle light guide strips according to claim 1, characterized in that, The upper mold body (1) and the lower mold body (2) are connected by mold closing. The upper mold top plate (3) is installed on the top of the upper mold body (1) by bolts. A sprue plate (7) is provided in the middle of the top of the upper mold top plate (3). The lower mold pad (5) is installed on the bottom of the lower mold body (2) by bolts. Two support seats (6) are fixedly installed on the top of the mold support base plate (4) and the mold support base plate (4) is bolted to the bottom of the lower mold pad (5) through the two support seats (6).

4. The injection molding mold for high-transparency thick-walled motorcycle light guide strips according to claim 3, characterized in that, A bifurcated flow channel (13) is provided at the center of the inner cavity of the light guide strip cavity (11). The bifurcated flow channel (13) and the four bifurcated ends are respectively connected to the four light guide strip forming cavities (12) through transition grooves (15). The bifurcated flow channel (13) and the sprue plate (7) are connected through the sprue.

5. The injection molding mold for high-transparency thick-walled motorcycle light guide strips according to claim 1, characterized in that, Guide columns (22) are installed on both sides of the top of the template (17).

6. The injection molding mold for high-transparency thick-walled motorcycle light guide strips according to claim 1, characterized in that, An inlet valve (8) is installed at the flow channel on the front of the upper mold body (1).

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