Gate structure
A gate and core-pulling mechanism technology, which is applied to household appliances, other household appliances, household components, etc., can solve the problem of easy injection of gates, increase the cost of mold manufacturing, and affect the lighting effect.
Active Publication Date: 2021-07-20
华域视觉科技(长沙)有限公司
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Problems solved by technology
The main reason for the ripples is that the gate design is unreasonable, which causes the silica gel to reflow after being heated and expanded during injection.
[0003] At present, most of the silicone concentrators on the market choose point gates, and the gate positions are generally as follows: Figure 4 As shown in the gate 200 in the figure, this kind of point gate has several disadvantages: 1. There are residues in the gate on the optical surface, which affects the lighting effect; 2. Jetting problems are prone to occur at the gate; 3. A product Requires a cold runner needle valve, increasing mold manufacturing cost
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Embodiment Construction
[0017] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.
[0018]
[0019] figure 1 is an embodiment of the present invention.
[0020] Such as figure 1 As shown, in this embodiment, the gate structure 10 is applied in the injection mold for injection molding the silicone concentrator 20. In order to avoid gate injection, the gate 11 is specially designed so that the fluid flow is pressure-driven The jetting problem is solved. Specifically:
[0021] First, when arranging the injection mold, the light-emitting surface of the silicone concentrator is set on the ground side of the injection mold, and the light-incoming surface is set on the sky side.
[0022] Secondly, the gate structure 10 of this embodiment is a side gate, including a gate 11 . The gate 11 is set on the side of the injection mold and close to the ground side. The material injected into the gate 11 is from bott...
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Abstract
The invention provides a gate structure for preventing the turbulent flow of an optical silica gel concentrator in vehicle light optics. The gate structure is used in an injection mold for injection molding a silicone concentrator. The light-emitting surface of the silicone concentrator is set on the ground side of the injection mold and its light-incident surface is set on the sky side. The gate structure is characterized in that: It includes a gate provided on the side of the injection mold and at a position close to the ground side. In this way, during injection, the gate is from bottom to top to avoid shower, and because the viscosity of silicone is very low, its flow is affected by gravity during injection molding, and filling from bottom to top is more stable.
Description
technical field [0001] The invention belongs to the technical field of automobile lamp manufacturing, and in particular relates to a gate structure for preventing turbulent flow of optical silica gel concentrators in the optics of automobile lamps. Background technique [0002] Due to its good heat resistance and high optical transmittance, silica gel is more and more widely used in optics. Common silica gel concentrator structures are as follows: Figure 4 As shown, the silica gel concentrator has many concentrating heads and needle-like void structures. As an optical component, the appearance of the silicone concentrator is not allowed to have any defects such as bubbles, flashes, and ripples. The main reason for the ripples is that the gate design is unreasonable, which causes the silica gel to reflow after being heated and expanded during injection. [0003] At present, most of the silicone concentrators on the market choose point gates, and the gate positions are gener...
Claims
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IPC IPC(8): B29C45/27B29L31/30
CPCB29C45/2708B29L2031/30B29L2031/747
Inventor 赵彩霞郎雄朱叶琪
Owner 华域视觉科技(长沙)有限公司