Injection mold for optical injection molding parts
By designing optical injection molds, the problems of gate structure affecting optical light distribution and visibility of optical injection molded parts have been solved, achieving high-precision molding and efficient production, extending mold life, and improving product quality.
Patent Information
- Application Number
- CN202422818394.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing conventional gating methods cannot meet the special structural requirements of optical injection molded parts, affecting optical light distribution, visible gating structure, and optical consistency.
Design an optical injection mold comprising a fixed mold, a moving mold, a sprue slider, and angled guide pillars. The sprue slider and guide pillar holes are designed with angled guide pillars in cooperation. The injection runner outlet is shaped like an inverted "V". A cold slug well and a stop are provided to ensure that the molten plastic flows into the cavity evenly.
It improves the molding accuracy and quality of optical injection molded parts, reduces mold wear, extends mold life, and enhances injection molding efficiency and product optical performance.
Smart Images
Figure CN223589948U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mould technical field especially optical injection part's injection mould. BACKGROUND
[0002] In the fierce competition environment of the existing vehicle lamp industry, in order to achieve the most perfect visual effect, the modeling, optical scheme of vehicle lamp are constantly updated iteration, in order to stand out in the cruel competition system of today, the optical scheme, modeling of lamp are strange, and each lamp is different, so the optical part of some special structure needs mold to design some special mechanism to realize the demand of product. Due to the limitation of product modeling, appearance, performance requirement, the existing ordinary gate mode can not satisfy the product requirement at all. The ordinary side gate, point gate need to evaluate whether the optical part product has a place to place, need to ensure whether the structure of gate affects optical distribution, whether the gate structure is exposed and visible, whether the gate pruning affects the consistency of optics and other problems.
[0003] Therefore, it is necessary to design an optical injection part injection mold to solve the above problems. INVENTION CONTENTS
[0004] The utility model aims at the deficiency of prior art and provides an optical injection part injection mold.
[0005] The utility model discloses a kind of optical injection part injection molds, including fixed mould and movable mould;Fixed mould and movable mould are respectively embedded with fixed mould kernel and movable mould kernel;The gate sliding block is slidably connected on movable mould;Fixed mould kernel, movable mould kernel and gate sliding block form product injection cavity;The inclined guide pillar of sliding cooperation with gate sliding block is equipped on fixed mould;The hot runner that is communicated to the place of gate sliding block is equipped on fixed mould kernel;Gate sliding block is equipped with injection runner extending to injection cavity;The entrance end of injection runner is equipped with the cold material well that is communicated with injection runner;The top of gate sliding block is equipped with the block that extends towards cold material well.
[0006] The inclined guide pillar of cooperation with guide pillar hole is equipped on gate sliding block;Gap is left between guide pillar hole and inclined guide pillar.
[0007] The gap is 1mm.
[0008] The outlet end of injection runner is connected to injection cavity along vertical direction, and the cross section of the outlet end of injection runner is arranged as inverted "eight" shape.
[0009] The length of the outlet end of injection runner is greater than 20mm.
[0010] The utility model discloses the following beneficial effects are obtained: the utility model discloses through design contains the injection mold structure of fixed die, movable die and gate sliding block, and the accurate product injection cavity formed between them, ensure the high-precision forming of optical injection part, especially the cooperation of gate sliding block and inclined guide pillar makes the mold opening and closing action more smooth, effectively reduces the mold wear in the injection molding process, improves the service life and injection efficiency of the mold, at the same time, the ingenious design of hot runner and injection runner ensures that the molten plastic can flow into the injection cavity uniformly and efficiently, reduces the influence of cold material on product quality, improves the optical performance and overall quality of the part, in addition, the top of gate sliding block is equipped with the fender extending towards the cold material well, can avoid the situation that the gate sticks to fixed die, guarantees the stable production. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail below according to specific embodiments and in conjunction with the drawings.
[0012] Figure 1 It is the structural schematic diagram of the utility model.
[0013] Figure 2 It is the structural schematic diagram of the injection runner of the utility model.
[0014] The reference numerals in the drawings are:
[0015] Fixed die 1, movable die 2, gate sliding block 3, inclined guide pillar 4, hot runner 5, injection runner 6, cold material well 7. PREFERRED EMBODIMENT
[0016] (Example 1)
[0017] See Figure 1 And Figure 2 The injection mold of the optical injection part of the embodiment includes fixed die 1 and movable die 2; the fixed die 1 and the movable die 2 are respectively embedded with fixed die and movable die; the movable die 2 is slidably connected with gate sliding block 3; the fixed die, the movable die and the gate sliding block 3 form a product injection cavity; the fixed die 1 is provided with inclined guide pillar 4 in sliding cooperation with the gate sliding block 3; the fixed die is provided with hot runner 5 communicated to the gate sliding block 3; the gate sliding block 3 is provided with injection runner 6 extending to the injection cavity; the inlet end of the injection runner 6 is provided with cold material well 7 communicated with the injection runner 6; the top of the gate sliding block 3 is provided with fender extending towards the cold material well 7.
[0018] Further, the sprue slider 3 is provided with a guide pin hole matched with the inclined guide pin 4; the guide pin hole and the inclined guide pin 4 are left with a gap. The gap is 1mm. The movable mold 2 is not moved at the moment of mold opening, the inclined guide pin 4 is moved to a certain distance to pull the slider to move to the side, so that the product is separated from the slider.
[0019] Further, the outlet end of the injection flow channel 6 is communicated to the injection cavity along the vertical direction, and the cross section of the outlet end of the injection flow channel 6 is provided in the shape of inverted "8". In this way, the sprue and flow channel can be fixed on the movable mold 2 at the moment of mold opening, and finally the sprue is completely formed on the slider without affecting the final demolding of the product.
[0020] Further, the length of the outlet end of the injection flow channel 6 is greater than 20mm, which can effectively avoid the influence of sprue defects on the optical effect of the injection molded product.
[0021] The embodiment of the present application has a series of innovative designs, which significantly improves the injection molding efficiency, product quality and mold service life of optical injection molded parts, reduces the production cost, and provides strong technical support for large-scale production of optical injection molded parts.
[0022] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above is only a specific embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An injection mold for an optical class injection molded part, characterized by: The injection molding machine comprises a fixed mold (1) and a movable mold (2); the fixed mold (1) and the movable mold (2) are respectively embedded with a fixed mold core and a movable mold core; the movable mold (2) is slidably connected with a gate sliding block (3); the fixed mold core, the movable mold core and the gate sliding block (3) form a product injection molding cavity; the fixed mold (1) is provided with an inclined guide pillar (4) which is in sliding cooperation with the gate sliding block (3); the fixed mold core is provided with a hot runner (5) which is communicated to the gate sliding block (3); the gate sliding block (3) is provided with an injection runner (6) which extends to the injection molding cavity; the inlet end of the injection runner (6) is provided with a cold well (7) which is communicated with the injection runner (6); the top of the gate sliding block (3) is provided with a stop block which extends towards the cold well (7).
2. An injection mold for optical class injection molded parts according to claim 1, characterized in that: The gate sliding block (3) is provided with a guide pillar hole which is in cooperation with the inclined guide pillar (4); a gap is left between the guide pillar hole and the inclined guide pillar (4).
3. An injection mold for optical class injection molded parts according to claim 2, characterized in that: The gap is 1mm.
4. An injection mold for optical class injection molded parts according to claim 1, characterized in that: The outlet end of the injection runner (6) is vertically communicated to the injection molding cavity, and the cross section of the outlet end of the injection runner (6) is arranged in an inverted "eight" shape.
5. An injection mold for optical class injection molded parts according to claim 4, characterized in that: The length of the outlet end of the injection runner (6) is greater than 20mm.