Double-color injection mold with one-color parting surface protection device
By using a zero-degree positioning mechanism in the two-color injection mold, the precise connection between the moving mold and the fixed mold is ensured, and the problem of abrasion of the parting surface of the existing injection mold is solved, and the quality and appearance of the product injection molding are improved.
Patent Information
- Application Number
- CN202422152766.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-03
AI Technical Summary
When existing injection molds are formed in one color, there is a gap in the positioning and coordination between the molds, resulting in abrasion of the parting surface and defects in the product appearance.
A two-color injection mold with a one-color parting surface protection device is designed, and a zero-degree positioning mechanism is used. Through the coordination of the positioning pin and the positioning ring, the precise butt of the moving and fixed molds is ensured during the mold closing, and the contact between the parting surface is avoided.
It effectively avoids scratches on the parting surface during the injection molding process of the same color, ensuring the injection molding quality and appearance of the product.
Smart Images
Figure CN223000991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and in particular to a two-color injection mold with a protection device for a single-color parting surface. Background Art
[0002] In the production process of some car headlight parts, some components need to be successively injected into a two-color injection mold with two plastic materials, demolded after two molding processes, so as to form a product in which two different materials are combined into one. At present, in the existing injection molds, during single-color molding, due to certain gaps in the positioning and fitting between the molds, the parting surface will be scratched during single-color molding, resulting in defects in the appearance of the product after molding.
[0003] Therefore, it is necessary to design a two-color injection mold with a protection device for a single-color parting surface to solve the above problems. Summary of the Utility Model
[0004] The purpose of the utility model is to address the problem that the parting surface is scratched during single-color injection molding of the existing molds, and to propose a two-color injection mold with a protection device for a single-color parting surface.
[0005] The technical solution of the utility model is: a two-color injection mold with a protection device for a single-color parting surface, including a moving mold and a fixed mold; a single-color injection molding parting surface is formed after the moving mold and the fixed mold are clamped; a two-color injection molding parting surface is formed after the moving mold rotates 180° and is clamped with the fixed mold; a zero-degree positioning mechanism is provided between the fixed mold and the moving mold; when the moving mold and the fixed mold are clamped, the zero-degree positioning mechanism between the fixed mold and the moving mold contacts first, playing a guiding role for the moving mold and the fixed mold.
[0006] The zero-degree positioning mechanism includes positioning pins symmetrically embedded on both sides of the fixed mold and two positioning rings correspondingly embedded on the moving mold at positions corresponding to the two positioning pins; the positioning pins are arranged along the clamping direction of the fixed mold and the moving mold; when the fixed mold and the moving mold are clamped, the positioning pins cooperate with the positioning rings first, playing a guiding role for the moving mold and the fixed mold.
[0007] Both the fixed mold and the moving mold include a mold frame and a mold core embedded in the mold frame; the mold frames of the fixed mold and the moving mold are positioned through the tiger mouth positioning protrusions and tiger mouth positioning grooves at their four corners.
[0008] The positioning pins and the positioning rings are respectively arranged on the mold cores of the fixed mold and the moving mold.
[0009] With the above technical solution, the utility model has the following beneficial effects: The utility model is provided with a zero-degree positioning mechanism. When the moving mold and the fixed mold are clamped, the zero-degree positioning mechanism between the fixed mold and the moving mold contacts first, playing a guiding role for the moving mold and the fixed mold. Since the mold cores of the fixed mold and the moving mold have an angle with the insert parting surface, the mold cores will only contact the insert parting surface when the mold is clamped in place. During the process of single-color injection molding, it can effectively avoid abrasion of the parting surface and ensure the injection molding quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to make the content of the utility model easier to be clearly understood, the following further detailed description of the utility model is made according to specific embodiments in conjunction with the drawings.
[0011] Figure 1 It is a schematic structural diagram of the moving mold of the utility model.
[0012] Figure 2 It is a state diagram of the utility model during single-color injection molding.
[0013] Figure 3 It is a state diagram of the utility model during two-color injection molding.
[0014] The reference numerals in the drawings are:
[0015] Moving mold 1, fixed mold 2, zero-degree positioning mechanism 3, positioning insert post 3-1, positioning ring 3-2. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] (Embodiment 1)
[0017] See Figures 1 to 3 , A two-color injection mold with a single-color parting surface protection device in this embodiment includes a moving mold 1 and a fixed mold 2; a single-color injection molding parting surface is formed after the moving mold 1 and the fixed mold 2 are clamped; a two-color injection molding parting surface is formed after the moving mold 1 rotates 180° and is clamped with the fixed mold 2; a zero-degree positioning mechanism 3 is provided between the fixed mold 2 and the moving mold 1; when the moving mold 1 and the fixed mold 2 are clamped, the zero-degree positioning mechanism 3 between the fixed mold 2 and the moving mold 1 contacts first, playing a guiding role for the moving mold 1 and the fixed mold 2.
[0018] Further, the zero-degree positioning mechanism 3 includes positioning insert posts 3-1 symmetrically embedded on both sides of the fixed mold 2 and two positioning rings 3-2 correspondingly embedded on the moving mold 1 corresponding to the positions of the two positioning insert posts 3-1; the positioning insert posts 3-1 are arranged along the clamping direction of the fixed mold 2 and the moving mold 1; when the fixed mold 2 and the moving mold 1 are clamped, the positioning insert posts 3-1 cooperate with the positioning rings 3-2 first, playing a guiding role for the moving mold 1 and the fixed mold 2.
[0019] Furthermore, both the fixed mold 2 and the movable mold 1 include a mold frame and a mold core embedded in the mold frame; the mold frames of the fixed mold 2 and the movable mold 1 are positioned through the dovetail positioning protrusions and dovetail positioning grooves at their four corners.
[0020] Furthermore, in order to ensure the positioning accuracy of the positioning pin 3-1 and the positioning ring 3-2, the positioning pin 3-1 and the positioning ring 3-2 are respectively arranged on the mold cores of the fixed mold 2 and the movable mold 1.
[0021] In this embodiment, a zero-degree positioning mechanism 3 is provided. When the movable mold 1 and the fixed mold 2 are closed, the zero-degree positioning mechanism 3 between the fixed mold 2 and the movable mold 1 contacts first, playing a guiding role for the movable mold 1 and the fixed mold 2. Since the mold cores of the fixed mold 2 and the movable mold 1 have an angle with the insert parting surface, the insert parting surface will only be contacted when the mold cores are in place during mold closing, thus avoiding abrasion of the parting surface and ensuring the injection molding quality of the product.
[0022] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
Claims
1. A two-color injection mold with a one-color parting surface protection device, characterized in that: The invention comprises a movable mold (1) and a fixed mold (2); the movable mold (1) and the fixed mold (2) are molded together to form a one-color injection parting surface; the movable mold (1) is rotated 180 degrees and molded together with the fixed mold (2) to form a two-color injection parting surface; a zero-degree positioning mechanism (3) is provided between the fixed mold (2) and the movable mold (1); when the movable mold (1) and the fixed mold (2) are molded together, the zero-degree positioning mechanism (3) between the fixed mold (2) and the movable mold (1) contacts first, thereby guiding the movable mold (1) and the fixed mold (2).
2. A two-color injection mold with a one-color parting surface protection device according to claim 1, characterized in that: The zero-degree positioning mechanism (3) comprises positioning pins (3-1) symmetrically embedded on both sides of the fixed mold (2) and two positioning rings (3-2) embedded on the movable mold (1) in a position corresponding to the two positioning pins (3-1); the positioning pins (3-1) are arranged along the mold closing direction of the fixed mold (2) and the movable mold (1); when the fixed mold (2) and the movable mold (1) are closed, the positioning pins (3-1) first cooperate with the positioning rings (3-2) to guide the movable mold (1) and the fixed mold (2).
3. A two-color injection mold with a one-color parting surface protection device according to claim 2, characterized in that: The fixed mold (2) and the movable mold (1) both comprise a mold frame and a mold core embedded in the mold frame; the mold frames of the fixed mold (2) and the movable mold (1) are positioned by means of thumb-and-mouth positioning protrusions and thumb-and-mouth positioning grooves at their four corners.
4. A two-color injection mold with a one-color parting surface protection device according to claim 3, characterized in that: The positioning pin (3-1) and the positioning ring (3-2) are respectively arranged on the mold cores of the fixed mold (2) and the movable mold (1).