A-surface structure of double-shot molded part
By setting up a rubber reducing area and buffer structure in the two-color molded injection molding parts, the problems of injection molding and electroplating caused by excessive sub-wall thickness are solved, and the quality and appearance of injection molding parts are improved.
Patent Information
- Application Number
- CN202421972875.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In the prior art, when the sub-wall thickness reaches or exceeds 2/3 of the main wall thickness, the A-side of the two-color injection molding parts is prone to problems of poor injection molding and electroplating.
During the two-color injection molding process, by setting a rubber reduction area on the main frame I and setting a buffer between the rubber reduction area and the main frame, ensuring that the secondary wall thickness is ≥ 1/2 of the main wall thickness, avoiding large flow barriers during the injection molding process.
It effectively solves the problems of poor injection molding and electroplating on the A-side surface, and improves the quality and appearance effect of injection molded parts.
Smart Images
Figure CN223076723U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to two-color injection molding technology, and particularly relates to a structure of the A surface of a two-color injection molded part. Background Art
[0002] For an injection molded part, the main wall thickness refers to the wall thickness of the main framework of the plastic part, and the secondary wall thickness is the wall thickness of features constructed on the basis of the main framework, such as rib positions, Boss columns, etc. Generally speaking, the secondary wall thickness is 1 / 2 of the main wall thickness and shall not exceed 2 / 3. If the secondary wall thickness reaches 2 / 3 of the main wall thickness, or reaches or exceeds the main wall thickness, poor injection molding and electroplating will occur on the A surface appearance. Content of the Utility Model
[0003] The utility model provides a structure of the A surface of a two-color injection molded part, which solves the problems of poor injection molding and electroplating on the A surface.
[0004] The technical solution of the utility model is as follows:
[0005] A structure of the A surface of a two-color injection molded part, which includes a main framework I part and features formed by the first shot of two-color injection molding, and a main framework II part formed by the first shot of two-color injection molding. The main framework I part and the main framework II part are adhered to form the main framework; a glue-reducing area partially formed by reducing glue during the first shot of two-color injection molding is provided on the main framework I part, and the glue-reducing area is opposite to the features.
[0006] The features are rib positions and / or Boss columns.
[0007] The wall thickness of the main framework is the main wall thickness, the wall thickness of the features is the secondary wall thickness, and the secondary wall thickness ≥ 1 / 2 of the main wall thickness.
[0008] A buffer is provided between the glue-reducing area and the main framework I part to avoid large flow resistance during the injection molding process. Description of the Drawings
[0009] Figure 1 It is a schematic diagram (1) of the A surface structure of a two-color injection molded part.
[0010] Figure 2 It is a schematic diagram (2) of the A surface structure of a two-color injection molded part.
[0011] In the figure, there are main framework 1, main framework I part 1-1, main framework II part 1-2, glue-reducing area 1-3, buffer 1-4, and Boss column 2. Detailed Embodiment
[0012] Such as Figure 1-2As shown in the figure, a double-color injection molded part A-side structure includes a main frame I part 1-1 and a Boss post 2 formed by the first shot of double-color injection molding, and a main frame II part 1-2 formed by the first shot of double-color injection molding. The main frame I part 1-1 and the main frame II part 1-2 are adhered to form the main frame 1. There is a reduced glue area 1-3 on the main frame I part 1-1 that is partially reduced in glue during the first shot of double-color injection molding. The reduced glue area 1-3 is opposite to the Boss post 2.
[0013] The wall thickness of the main frame 1 is the main wall thickness, and the wall thickness of the Boss post 2 is the secondary wall thickness. The secondary wall thickness ≥ 1 / 2 of the main wall thickness.
[0014] A buffer 1-4 is provided between the reduced glue area 1-3 and the main frame I part 1-1.
[0015] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A surface A structure of a two-color injection molded part, which includes a main frame I part and features formed by the first shot of two-color injection molding, and a main frame II part formed by the first shot of two-color injection molding. The main frame I part and the main frame II part are adhered to form the main frame; it is characterized in that, On the first part of the main frame, there is a material-reducing area formed by partial material reduction during the injection process of two-color die-casting, and the material-reducing area is opposite to the feature.
2. The A-side structure of a two-color injection molded part according to claim 1, characterized in that, The feature is a rib and / or a boss post.
3. The A-side structure of a two-color injection molded part according to claim 1, characterized in that, The wall thickness of the main frame is the main wall thickness, and the wall thickness of the feature is the secondary wall thickness, and the secondary wall thickness ≥ 1 / 2 of the main wall thickness.
4. The A-side structure of a two-color injection molded part according to claim 1, characterized in that, A buffer is provided between the material-reducing area and the first part of the main frame.