A two-piece silicone mold for a car lamp

Abstract

The present invention discloses a one-mold two-piece silicone mold for a headlight, comprising an upper mold, a lower mold and a mold core, the mold core is nested in a mold cavity between the upper mold and the lower mold, the mold core is integrally divided into an upper part and a lower part by a positioning ring edge, the upper and lower outer surfaces of the mold core respectively constitute the inner surface of the headlight shade and the inner surface structure of the headlight bowl, the positioning ring edge comprises a fixing ring and a positioning ring, the fixing ring surrounds and fixes the mold core, the positioning ring cooperates with the intersection of the upper mold and the lower mold for positioning and engagement, a positioning hole is provided at the lower part of the mold core, and the positioning is achieved by cooperating with the positioning column shaft hole provided in the lower mold, after the injection molding materials are respectively poured in through the pouring port, cooled and formed, the materials are demoulded and taken out, and the one-mold two-piece material is completed. The one-mold two-piece silicone mold for a headlight can realize one-mold injection molding of two products, greatly improving the production efficiency of headlight products, the mold core adopts special mold silicone, the complex structure of the lampshade can be fully fitted, and the surface of the injection molded product structure is more delicate and smooth.

Description

Technical Field

[0001] The invention relates to the technical field of lamp equipment manufacturing, and in particular to a mold for preparing front and rear lamps of an automobile used in a foggy environment, and more particularly to a silicone mold capable of preparing a lamp product in two pieces with one mold. Background Art

[0002] In rainy or foggy conditions, when there are many vehicles on the road, traffic accidents are very likely to occur, and vehicle collisions often occur. In foggy conditions, due to the limited lighting conditions of cars, the driving speed is slow, and the front lighting effect is also affected by the visibility in foggy days. If a headlight can be designed that can still maintain good lighting conditions in foggy road conditions, it can significantly improve the current situation of road congestion and avoid accidents.

[0003] In the modern automobile manufacturing industry, the design improvements of car lights have enabled cars to illuminate farther in foggy road conditions, making driving more convenient and safer. The mold manufacturers that manufacture these car lights also need technological innovation in mold design to speed up production efficiency. Summary of the invention

[0004] The purpose of the present invention is: in order to achieve the goal of speeding up the production of car lights in the background technology, a car light and a one-mold two-piece silicone mold for producing the car light are designed and proposed, which can mold the lamp bowl and lampshade of the car light into one mold, thereby speeding up the production efficiency of the car light.

[0005] The technical solution adopted to solve the above problems is: a car lamp, including a light source, a lamp bowl and a lampshade, the light source is arranged at the center of the lamp bowl, the inner wall of the lamp bowl is in the shape of a smooth parabola, the light-emitting point of the light source is located at the physical focus of the parabola on the inner wall of the lamp bowl, which can effectively gather the light emitted by the light source and concentrate the illumination range of the light, the lampshade is placed at the front end of the lamp bowl, and a plurality of light beams are integrally arranged on the inner side, the light beams are in the shape of a ring and are arranged in a collinear manner along the illumination direction of the car lamp, the two outer side walls of the light beams are provided with a mirror coating, the mirror coating reflects the light from the light source after it enters the light beams for multiple times, and then emits it along the direction of the light beams, the plurality of light beams re-reflect as much light as possible that is not projected onto the lamp bowl by the light source in a calibrated direction, and emit it along the direction of the car lamp, thereby increasing the illumination brightness and illumination distance directly in front.

[0006] Furthermore, the two side walls of the light beam are arranged in parallel.

[0007] According to the design structure of the above-mentioned headlight, a one-mold two-piece silicone mold for the headlight is designed and proposed, including an upper mold, a lower mold and a mold core, the upper mold and the lower mold are respectively fixed by an upper pressing plate and a lower pressing plate, and are controlled to move up and down and press together by guide pillars, the guide pillars are fixedly connected with the upper mold plate and the lower mold plate up and down, the upper mold core is provided in the middle of the upper mold, the cavity in the upper mold core is set to the outer surface structure of the headlight shade, the lower mold core is provided in the middle of the lower mold, the cavity in the lower mold core is set to the outer surface structure of the headlight bowl, the mold core is nested in the cavity between the upper mold and the lower mold, The mold core is divided into an upper part and a lower part by a positioning ring edge. The upper and lower outer surfaces of the mold core constitute the inner surface of the lampshade and the inner surface structure of the lamp bowl of the lamp respectively. The cross-section of the positioning ring edge is T-shaped, including a fixing ring and a positioning ring. The fixing ring surrounds and fixes the mold core. The positioning ring cooperates with the junction of the upper mold and the lower mold for positioning. A positioning hole is provided in the lower part of the mold core, which cooperates with the positioning column shaft hole provided in the lower mold to achieve positioning. After the injection molding material is poured in through the pouring port, it is cooled and formed, and then the material is demolded to complete the discharge of two pieces from one mold.

[0008] Furthermore, an upper pouring port is communicated with the upper mold core, and a lower pouring port is communicated with the lower mold core, and injection molding materials are poured according to the material requirements of the lampshade and lamp bowl products.

[0009] Furthermore, an elastic sealing member is provided at the junction of the upper mold and the lower mold, which is tightly fitted with a positioning ring provided on the mold core.

[0010] Furthermore, cooling pipes are provided on the upper mold and the lower mold close to the mold cavity to accelerate the cooling and molding speed of the injection molding material in the mold cavity.

[0011] Furthermore, a sealing ring is provided at the joint between the positioning post and the lower mold core, which is tightly sleeved with the positioning post.

[0012] Furthermore, the mold core material is mold silicone.

[0013] The beneficial effects of implementing the present invention are:

[0014] 1. The two-piece silicone mold for the headlight can realize two products of one mold injection molding, greatly improving the production efficiency of the headlight products;

[0015] 2. The mold core uses special mold silicone, which can fully fit the complex structure of the lampshade, and the surface of the injection molded product structure is more delicate and smooth;

[0016] 3. The mold core is fixed by the positioning ring edge when the mold is closed, and a positioning column is also provided at the lower end to ensure that the mold core is firmly fixed to the upper mold and the lower mold. Due to the different materials of the lampshade and the lamp bowl, the upper pouring port and the lower pouring port set separately can freely select the injection molding material, which is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following drawings are provided to briefly introduce the embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a two-piece silicone mold for a headlight in this embodiment;

[0019] Figure 2 This is a schematic diagram of the illumination of the vehicle lamp of this embodiment;

[0020] Figure 3 This is a schematic diagram of the installation of the vehicle lamp of this embodiment;

[0021] Figure 4 This is a schematic diagram of the structure of the positioning ring edge described in this embodiment;

[0022] Among them, 11-light source, 12-lamp bowl, 13-light beam, 14-lamp cover, 21-upper part of mold core, 22-lower part of mold core, 23-positioning ring edge, 231-fixing ring, 232-positioning ring, 24-elastic sealing, 25-positioning hole, 31-upper mold, 32-lower mold, 33-sealing collar, 34-positioning column, 35-upper pouring gate, 36-lower pouring gate, 37-upper template, 38-guide column, 39-lower template, A-light emitting point (physical focus of parabola), O-origin of parabola, L-physical directrix of parabola, X-illumination range of traditional car lights, Y-illumination range of the car lights of this embodiment. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings provided by the present invention.

[0024] Example:

[0025] Figure 2 A vehicle lamp is shown, comprising a light source 11, a lamp bowl 12 and a lampshade 14. The light source 11 is arranged at the center of the lamp bowl 12. The inner wall of the lamp bowl 12 is in the shape of a smooth parabola. The light source 11 is located at the physical focus of the parabola on the inner wall of the lamp bowl 12, which can effectively gather the light emitted by the light source 11 and concentrate the irradiation range of the light. The lampshade 14 is placed at the front end of the lamp bowl 12, and a plurality of light beams 13 are integrally arranged on the inner side. The light beams 13 are ring-shaped and are arranged in a colinear manner along the irradiation direction of the vehicle lamp. The two side walls of the light beams 13 are arranged in parallel.

[0026] Specifically, the two outer side walls of the light beam 13 are provided with a mirror coating, which reflects the light emitted by the lamp source 11 into the light beam 13 for multiple times, and then emits it along the direction of the light beam 13. Several light beams 13 re-reflect as much light as possible that is not projected onto the lamp bowl 12 by the lamp source 11 in a calibrated direction, and emit it along the square of the car light, thereby increasing the illumination brightness and lighting distance directly in front.

[0027] See also Figure 1 The present embodiment proposes a one-mold two-piece silicone mold for a headlight, including an upper mold 31, a lower mold 32 and a mold core, the mold core is made of mold silicone, the upper mold 31 and the lower mold 32 are respectively fixed by an upper pressing plate and a lower pressing plate, and are controlled to move up and down and press together by a guide column 38, and the guide column 38 is fixedly connected to an upper mold plate 37 and a lower mold plate 39 above and below.

[0028] Specifically, an upper mold core is provided in the middle of the upper mold 31, and the cavity in the upper mold core is set as the outer surface structure of the lampshade 14 of the vehicle lamp. A lower mold core is provided in the middle of the lower mold 32, and the cavity in the lower mold core is set as the outer surface structure of the lamp bowl 12 of the vehicle lamp.

[0029] More specifically, the mold core is nested in the cavity between the upper mold 31 and the lower mold 32, and the mold core is integrally divided into an upper part 21 and a lower part 22 by a positioning ring edge 23. The outer surfaces of the upper part 21 and the lower part 22 of the mold core respectively constitute the inner surface structure of the lampshade 14 and the inner surface structure of the lamp bowl 12.

[0030] Figure 4 The specific structure of the positioning ring edge 23 is shown in the figure. The cross-section of the positioning ring edge 23 is T-shaped, including a fixing ring 232 and a positioning ring 231. The fixing ring 232 surrounds and fixes the mold core. The positioning ring 231 cooperates with the intersection of the upper mold 31 and the lower mold 32 for positioning. The lower part 22 of the mold core is provided with a positioning hole 25, which cooperates with the axial hole of the positioning column 34 provided in the lower mold 32 to achieve positioning. An upper pouring port 35 is connected to the mold core of the upper mold 31, and a lower pouring port 36 is connected to the mold core of the lower mold 32. The injection material is poured according to the material requirements of the lampshade 14 and the lamp bowl 12 products. After the injection material is poured in through the pouring port, it is cooled and formed, and then the material is demoulded to complete the one-mold two-piece discharge.

[0031] A further implementation scheme is that an elastic seal 24 is provided at the junction of the upper mold 31 and the lower mold 32, and is tightly fitted with a positioning ring 231 provided on the mold core.

[0032] A further embodiment is that the upper mold 31 and the lower mold 32 are provided with cooling pipes ( Figure 1-4 (not shown) to speed up the cooling and molding speed of the injected plastic in the mold cavity.

[0033] A further implementation scheme is that, in order to ensure that the mold core is stable and secure after mold closing, a sealing ring 33 is provided at the joint between the positioning column 25 and the mold core of the lower mold 32, and is tightly sleeved with the positioning column 25.

Claims

1. A two-piece silicone mold for a car lamp, comprising an upper mold, a lower mold and a mold core, characterized in that: The upper mold and the lower mold are respectively fixed by the upper pressing plate and the lower pressing plate, and are controlled to move up and down and press together by the guide column. The upper mold and the lower mold are fixedly connected to the upper and lower molds above and below the guide column. The middle part of the upper mold is provided with an upper mold core, and the cavity in the upper mold core is set as the outer surface structure of the lampshade of the vehicle lamp. The middle part of the lower mold is provided with a lower mold core, and the cavity in the lower mold core is set as the outer surface structure of the lamp bowl of the vehicle lamp. The mold core is nested in the cavity between the upper mold and the lower mold. The mold core is made of mold silicone. The mold core is divided into an upper part and a lower part by a positioning ring edge. The upper and lower outer surfaces of the mold core respectively constitute The inner surface of the lampshade and the inner surface of the lamp bowl of the vehicle lamp, the side cross section of the positioning ring is T-shaped, including a fixing ring and a positioning ring, the fixing ring surrounds and fixes the mold core, the positioning ring cooperates with the intersection of the upper mold and the lower mold for positioning and clamping, the lower part of the mold core is provided with a positioning hole, and the positioning is achieved by cooperating with the positioning column shaft hole provided in the lower mold. After the injection molding material is poured in through the pouring port, it is cooled and formed, and the material is demoulded to complete the two-piece discharge of one mold; the intersection of the upper mold and the lower mold is provided with an elastic sealing member, which is tightly fitted with the positioning ring provided on the mold core; An upper pouring port is communicated with the upper mold core, and a lower pouring port is communicated with the lower mold core, and injection molding materials are poured according to the material requirements of the lampshade and the lamp bowl products.

2. The one-mold two-piece silicone mold for a car lamp according to claim 1, characterized in that: The upper die and the lower die are provided with cooling pipes close to the cavity to accelerate the cooling and molding speed of the injection molding material in the cavity.

3. The one-mold two-piece silicone mold for a car lamp according to claim 1, characterized in that: A sealing ring is provided at the joint between the positioning post and the lower mold core, which is tightly sleeved with the positioning post.

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