Electric vehicle signal lamp thick-wall light guide injection mold based on layered pouring

Abstract

The utility model belongs to the technical field of molds, and particularly relates to an electric vehicle signal lamp thick-wall light guide injection mold based on layered pouring. The thick-wall light guide forming die comprises a thick-wall light guide forming lower die and a thick-wall light guide forming upper die. In the injection molding process, the thick-wall light guide molding lower mold and the thick-wall light guide molding upper mold are close to each other, so that the lower molding embedding seat and the upper molding embedding seat are propped against each other to form four symmetrically arranged cavities, and a molten material is injected into the layered synchronous pouring assembly through the injection molding main plate; molten materials are firstly gathered through the layered synchronous pouring assembly and then are synchronously shunted into the four cavities, a layered pouring molding mode is adopted, the uniformity of injection molding of the multiple cavities is ensured, the surface quality of plastic parts is improved, large differences of the plastic parts in the same batch are avoided, and the side auxiliary molding parts are used for assisting in molding the outer side structures of the plastic parts; the sliding type sealing forming part is used for assisting in forming a top structure of a plastic part, and the demolding smoothness after forming is improved by adopting cooperation of multiple modules.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a thick-walled light guide injection mold for an electric vehicle signal lamp based on layered pouring. Background Art

[0002] In the field of vehicle lighting, taking the signal lights on vehicles as an example, with the development of technology, more and more signal lights are beginning to adopt thick-walled light guide structures. Existing thick-walled light guides for electric vehicle signal lights are generally injection molded using injection molds. When molding multiple thick-walled light guide plastic parts for electric vehicle signal lights at one time, it is difficult to ensure uniformity of plastic parts in the same batch, and the surface quality varies greatly, with low yield. Therefore, it is urgent to design an injection mold for thick-walled light guides for electric vehicle signal lights based on layered pouring that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a thick-walled light guide mold for a headlight [application number: 201720776172.7], which includes an upper mold and a lower mold. An upper composite plate is provided on the top of the upper mold, a runner plate is provided between the upper composite plate and the upper mold, a runner is provided on the runner plate, a pouring hole is provided on the upper mold, a liquid inlet interface is provided on one side of the runner plate, a plurality of liquid inlet micropores are provided on the liquid inlet interface, and the liquid inlet micropores are connected with the pouring hole through the runner. A movable mold is provided on both sides of the lower mold, and a mold cavity is formed between the upper mold, the lower mold and the movable mold. A slide is provided on the lower mold, a slide seat adapted to the slide is provided on the movable mold, an inclined slide hole is provided on the movable mold, a slide rod connected to the upper mold and used for mold separation is provided in the inclined slide hole, the slide rod is slidably connected to the inclined slide hole, and blocks corresponding to the movable mold are also provided on both sides of the lower mold. Summary of the invention

[0004] The utility model aims to solve the above problems and provides a thick-walled light guide injection mold for an electric vehicle signal lamp based on layered pouring.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A thick-walled light guide injection mold for an electric vehicle signal light based on layered pouring, comprising a thick-walled light guide molding lower mold and a thick-walled light guide molding upper mold, an injection molding mainboard is arranged above the thick-walled light guide molding upper mold, a lower molding insert is arranged in the thick-walled light guide molding lower mold, an upper molding insert is arranged in the thick-walled light guide molding upper mold, the lower molding insert and the upper molding insert are abutted against each other to form four symmetrically arranged cavities, a layered synchronous pouring assembly is arranged in the lower molding insert, side auxiliary molding parts that can move along one side close to or away from the cavity are arranged on both sides of the thick-walled light guide molding lower mold, a sliding sealing molding part arranged opposite to the cavity is arranged in the upper molding insert, and the sliding sealing molding part abuts against the side auxiliary molding parts.

[0007] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, the layered synchronous pouring assembly includes a main injection runner and four layered injection runners arranged in the lower molding insert, the main injection runner and the four layered injection runners are interconnected, the layered injection runner is connected to the cavity at one end away from the main injection runner, and a buffer storage tank is also provided between the main injection runner and the layered injection runner.

[0008] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, the side auxiliary molding parts include a plurality of side auxiliary molding slides arranged on both sides of the thick-walled light guide molding lower mold, the side auxiliary molding slides are slidably matched with the lower molding inserts, and the inner side of the side auxiliary molding slides is arranged opposite to the cavity.

[0009] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, the sliding seal molding part includes four seal molding inserts arranged in the upper molding insert seat, and the seal molding inserts are against the side auxiliary molding slide seat.

[0010] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, the bottom of the sealing molding insert has a slope, and the top of the side auxiliary molding slide has a slope, and the slope of the sealing molding insert matches the slope of the side auxiliary molding slide.

[0011] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, a surrounding water cooling pipe group is provided in the thick-walled light guide molding lower mold, and the surrounding water cooling pipe group extends into the lower molding insert.

[0012] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, a parallel light guide ejector is provided in the thick-walled light guide molding lower mold, and the parallel light guide ejector is located directly below the mold cavity, and the parallel light guide ejector is staggered with the side auxiliary molding slide.

[0013] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, the parallel light guide ejector parts include a plurality of parallel light guide ejector rods arranged in the thick-walled light guide molding lower mold, and the plurality of parallel light guide ejector rods are arranged parallel to each other and extend into the lower molding insert.

[0014] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, a plurality of waste ejection straight rods are also provided in the lower molding insert, and the waste ejection straight rods are staggered with the parallel light guide ejection rods.

[0015] In the above-mentioned thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring, an ejector slide is provided below the thick-walled light guide molding lower mold, and the waste ejector straight rod and the parallel light guide ejector rod are respectively connected to the ejector slide.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. In the injection molding process, the utility model brings the thick-walled light guide molding lower mold and the thick-walled light guide molding upper mold close to each other, so that the lower molding seat and the upper molding seat are abutted to form four symmetrically arranged cavities, and the molten material is injected into the layered synchronous pouring component through the injection molding main board, and the molten material is first gathered and then synchronously diverted to the four cavities through the layered synchronous pouring component. The layered pouring molding method is adopted to ensure the uniformity of injection molding of multiple cavities, improve the surface quality of plastic parts, and avoid large differences in plastic parts of the same batch. The side auxiliary molding parts are used to assist in molding the outer structure of the plastic parts, and the sliding sealing molding parts are used to assist in molding the top structure of the plastic parts. The use of multiple modules to cooperate improves the smoothness of demolding after molding.

[0018] 2. After the mold is opened, the utility model ejects the residual cooling material remaining in the lower molding insert through the waste ejection straight rod to avoid affecting the next injection molding.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a partial structural schematic diagram of the utility model.

[0022] Figure 3 It is a partial structural schematic diagram of the utility model in another direction.

[0023] Figure 4 It is a partial structural schematic diagram of the utility model in another direction.

[0024] In the figure: thick-walled optical waveguide molding lower mold 1, thick-walled optical waveguide molding upper mold 2, injection molding main board 3, lower molding insert 4, upper molding insert 5, layered synchronous pouring assembly 6, side auxiliary molding part 7, sliding sealing molding part 8, main injection molding runner 9, layered injection molding runner 10, buffer storage tank 11, side auxiliary molding slide 12, sealing molding insert 13, surrounding water-cooling pipe group 14, parallel optical waveguide ejector 15, parallel optical waveguide ejector rod 16, waste ejector straight rod 17, ejector slide plate 18. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-4 As shown, a thick-walled light guide injection mold for an electric vehicle signal light based on layered pouring comprises a thick-walled light guide molding lower mold 1 and a thick-walled light guide molding upper mold 2, an injection mainboard 3 is arranged above the thick-walled light guide molding upper mold 2, a lower molding insert 4 is arranged in the thick-walled light guide molding lower mold 1, an upper molding insert 5 is arranged in the thick-walled light guide molding upper mold 2, the lower molding insert 4 and the upper molding insert 5 are abutted against each other to form four symmetrically arranged cavities, a layered synchronous pouring assembly 6 is arranged in the lower molding insert 4, side auxiliary molding parts 7 which can move along one side close to or away from the cavity are arranged on both sides of the thick-walled light guide molding lower mold 1, a sliding sealing molding part 8 which is arranged opposite to the cavity is arranged in the upper molding insert 5, and the sliding sealing molding part 8 abuts against the side auxiliary molding part 7.

[0027] In this embodiment, during the injection molding process, the thick-walled optical waveguide molding lower mold 1 and the thick-walled optical waveguide molding upper mold 2 are brought close to each other, so that the lower molding seat 4 and the upper molding seat 5 are abutted to form four symmetrically arranged cavities, and the molten material is injected into the layered synchronous pouring component 6 through the injection molding main board 3, and the molten material is first gathered and then synchronously diverted to the four cavities through the layered synchronous pouring component 6. The layered pouring molding method is adopted to ensure the uniformity of injection molding of multiple cavities, improve the surface quality of plastic parts, and avoid large differences in plastic parts of the same batch. The side auxiliary molding part 7 is used to assist in molding the outer structure of the plastic part, and the sliding sealing molding part 8 is used to assist in molding the top structure of the plastic part. The use of multiple modules to cooperate with each other improves the smoothness of demolding after molding.

[0028] Combination Figure 1-4 As shown, the layered synchronous pouring assembly 6 includes a main injection runner 9 and four layered injection runners 10 arranged in the lower molding insert 4, the main injection runner 9 and the four layered injection runners 10 are interconnected, the layered injection runner 10 is connected to the mold cavity at one end away from the main injection runner 9, and a buffer storage tank 11 is also provided between the main injection runner 9 and the layered injection runner 10.

[0029] Specifically, during the injection molding process, the molten material is injected into the main injection channel 9 through the injection main board 3, and then converged in the main injection channel 9 and then synchronously diverted to the four cavities through the layered injection channel 10. The buffer storage tank 11 plays the role of buffering the material to ensure that when flowing to the layered injection channel 10, there is no fault, thereby reducing the surface bubbles of the plastic parts and improving the quality of the plastic parts. The layered injection molding method is adopted to ensure the uniformity of injection molding of multiple cavities, improve the surface quality of plastic parts, and avoid large differences in plastic parts from the same batch.

[0030] Combination Figure 3 , Figure 4 As shown, the side auxiliary molding component 7 includes a plurality of side auxiliary molding slides 12 arranged on both sides of the thick-walled optical waveguide molding lower mold 1, the side auxiliary molding slides 12 are slidably matched with the lower molding insert 4, and the inner side of the side auxiliary molding slide 12 is arranged opposite to the mold cavity; the sliding sealing molding component 8 includes four sealing molding inserts 13 arranged in the upper molding insert 5, and the sealing molding inserts 13 are against the side auxiliary molding slides 12.

[0031] In this embodiment, the side auxiliary molding slide 12 is used to assist in molding the outer side structure of the plastic part, and the sealing molding insert 13 is used to assist in molding the top structure of the plastic part. The use of multiple modules in coordination improves the smoothness of demoulding after molding.

[0032] Combination Figure 4 As shown, the sealing molding insert 13 has an inclined surface at the bottom, and the side auxiliary molding slide 12 has an inclined surface at the top, and the inclined surface of the sealing molding insert 13 is matched with the inclined surface of the side auxiliary molding slide 12.

[0033] In this embodiment, the inclined surface of the sealing molding insert 13 matches the inclined surface of the side auxiliary molding slide 12 to form the top inclined surface structure of the thick-walled light guide of the electric vehicle signal lamp.

[0034] A surrounding water cooling pipe group 14 is provided in the thick-walled light guide molding lower mold 1 , and the surrounding water cooling pipe group 14 extends into the lower molding insert 4 .

[0035] In this embodiment, after the injection molding is completed, cooling water is injected into the surrounding water cooling pipe group 14, and the molded plastic parts are cooled by the surrounding water cooling pipe group 14, and the cooling area is large.

[0036] The thick-walled light guide molding lower mold 1 is provided with a parallel light guide ejector 15 , and the parallel light guide ejector 15 is located directly below the mold cavity. The parallel light guide ejector 15 is staggered with the side auxiliary molding slide 12 .

[0037] In this embodiment, after the injection molding is completed, the mold is opened, and the molded thick-walled light guide plastic part of the electric vehicle signal light can be ejected from bottom to top through the parallel light guide ejector 15, with a large ejection area and a good ejection effect.

[0038] Combination Figure 4 As shown, the parallel light guide ejector 15 includes a plurality of parallel light guide ejector rods 16 disposed in the thick-wall light guide molding lower mold 1 , and the plurality of parallel light guide ejector rods 16 are disposed parallel to each other and extend into the lower molding insert 4 .

[0039] In this embodiment, after the injection molding is completed, the mold is opened, and the molded thick-walled light-conducting plastic part of the electric vehicle signal light can be ejected from bottom to top through a plurality of parallel light-conducting ejection rods 16, with a large ejection area and a good ejection effect.

[0040] Combination Figure 1 , Figure 4 As shown, a plurality of waste ejection straight rods 17 are further provided in the lower molding insert 4 , and the waste ejection straight rods 17 and the parallel light guide ejection rods 16 are arranged alternately.

[0041] In this embodiment, after the mold is opened, the residual cooled material remaining in the lower molding insert 4 is ejected by the waste ejection straight rod 17 to avoid affecting the next injection molding.

[0042] Combination Figure 4 As shown, an ejection slide plate 18 is provided below the thick-walled light guide molding lower mold 1, and the waste ejection straight rod 17 and the parallel light guide ejection rod 16 are respectively connected to the ejection slide plate 18.

[0043] In this embodiment, the ejection slide plate 18 is used to connect and fix the waste ejection straight rod 17 and the parallel light guide ejection rod 16 .

[0044] The working principle of the utility model is:

[0045] During the injection molding process, the thick-walled optical waveguide molding lower mold 1 and the thick-walled optical waveguide molding upper mold 2 are brought close to each other, so that the lower molding insert 4 and the upper molding insert 5 are abutted to form four symmetrically arranged cavities, and the molten material is injected into the main injection molding flow channel 9 through the injection molding main board 3, and then converged in the main injection molding flow channel 9 and then synchronously diverted to the four cavities through the layered injection molding flow channel 10. The buffer storage tank 11 plays the role of buffering the material, ensuring that when flowing to the layered injection molding flow channel 10, there is a fault, reducing the surface bubbles of the plastic parts, and improving the quality of the plastic parts. The layered injection molding method is adopted to ensure the uniformity of the injection molding of multiple cavities, improve the surface quality of the plastic parts, and avoid large differences in the same batch of plastic parts.

[0046] The side auxiliary molding slide 12 is used to assist in molding the outer side structure of the plastic part, and the sealing molding insert 13 is used to assist in molding the top structure of the plastic part. The multi-module combination improves the smoothness of demoulding after molding.

[0047] The inclined surface of the sealing molding insert 13 matches the inclined surface of the side auxiliary molding slide 12 to form the top inclined surface structure of the thick-walled light guide of the electric vehicle signal lamp.

[0048] After the injection molding is completed, the cooling water is injected into the surrounding water cooling pipe group 14, and the formed plastic parts are cooled by the surrounding water cooling pipe group 14. The cooling area is large.

[0049] After the injection molding is completed, the mold is opened, and the thick-walled light-conducting plastic parts of the electric vehicle signal lights formed can be ejected from bottom to top through a plurality of parallel light-conducting ejector rods 16, with a large ejection area and a good ejection effect.

[0050] After the mold is opened, the residual cooled material remaining in the lower molding insert 4 is ejected through the waste ejection straight rod 17 to avoid affecting the next injection molding. The ejection slide plate 18 is used to connect and fix the waste ejection straight rod 17 and the parallel light guide ejection rod 16.

[0051] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0052] Although this article uses more terms such as thick-walled light guide molding lower mold 1, thick-walled light guide molding upper mold 2, injection molding main board 3, lower molding insert 4, upper molding insert 5, layered synchronous pouring assembly 6, side auxiliary molding part 7, sliding sealing molding part 8, main injection molding runner 9, layered injection molding runner 10, buffer storage tank 11, side auxiliary molding slide 12, sealing molding insert 13, surrounding water cooling pipe group 14, parallel light guide ejector 15, parallel light guide ejector rod 16, waste ejector straight rod 17, ejector slide plate 18, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A thick-walled light guide injection mold for an electric vehicle signal light based on layered pouring, comprising a thick-walled light guide molding lower mold (1) and a thick-walled light guide molding upper mold (2), wherein an injection molding main board (3) is provided above the thick-walled light guide molding upper mold (2), characterized in that: The thick-walled optical waveguide molding lower mold (1) is provided with a lower molding insert (4), and the thick-walled optical waveguide molding upper mold (2) is provided with an upper molding insert (5). The lower molding insert (4) and the upper molding insert (5) are abutted to form four symmetrically arranged cavities. The lower molding insert (4) is provided with a layered synchronous pouring assembly (6). The thick-walled optical waveguide molding lower mold (1) is provided with side auxiliary molding parts (7) on both sides thereof that can move toward or away from one side of the cavity. The upper molding insert (5) is provided with a sliding sealing molding part (8) arranged opposite to the cavity, and the sliding sealing molding part (8) is abutted against the side auxiliary molding part (7).

2. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 1, characterized in that: The layered synchronous pouring assembly (6) comprises a main injection molding flow channel (9) and four layered injection molding flow channels (10) arranged in the lower molding insert (4); the main injection molding flow channel (9) and the four layered injection molding flow channels (10) are interconnected; one end of the layered injection molding flow channel (10) away from the main injection molding flow channel (9) is connected to the mold cavity; and a buffer storage tank (11) is provided between the main injection molding flow channel (9) and the layered injection molding flow channel (10).

3. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 2, characterized in that: The side auxiliary molding part (7) comprises a plurality of side auxiliary molding slides (12) arranged on both sides of the thick-walled light guide molding lower mold (1), the side auxiliary molding slides (12) are slidably matched with the lower molding insert (4), and the inner side of the side auxiliary molding slides (12) is arranged opposite to the mold cavity.

4. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 3 is characterized in that: The sliding sealing molding (8) comprises four sealing molding inserts (13) arranged in the upper molding insert seat (5), and the sealing molding inserts (13) are against the side auxiliary molding sliding seat (12).

5. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 4, characterized in that: The sealing molding insert (13) has an inclined surface at the bottom, and the side auxiliary molding slide seat (12) has an inclined surface at the top, and the inclined surface of the sealing molding insert (13) is matched with the inclined surface of the side auxiliary molding slide seat (12).

6. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 5, characterized in that: The thick-walled light guide molding lower mold (1) is provided with a surrounding water cooling pipe group (14), and the surrounding water cooling pipe group (14) extends into the lower molding insert (4).

7. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 6, characterized in that: The thick-walled light guide molding lower mold (1) is provided with a parallel light guide ejector (15), the parallel light guide ejector (15) is located directly below the mold cavity, and the parallel light guide ejector (15) is staggered with the side auxiliary molding slide seat (12).

8. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 7, characterized in that: The parallel light guide ejector (15) comprises a plurality of parallel light guide ejector rods (16) arranged in a thick-wall light guide molding lower mold (1), wherein the plurality of parallel light guide ejector rods (16) are arranged parallel to each other and extend into a lower molding insert (4).

9. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 8, characterized in that: A plurality of waste ejection straight rods (17) are also arranged in the lower molding insert (4), and the waste ejection straight rods (17) and the parallel light guide ejection rods (16) are arranged alternately.

10. The thick-walled light guide injection mold for electric vehicle signal lights based on layered pouring according to claim 9, characterized in that: An ejection slide plate (18) is provided below the thick-walled light guide molding lower die (1), and the waste ejection straight rod (17) and the parallel light guide ejection rod (16) are respectively connected to the ejection slide plate (18).

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