一种一出多腔的塑料环浇筑模具结构

By designing a multi-cavity plastic ring casting mold structure and adopting a curved main runner, buffer zone, and symmetrical point casting nozzle, the problems of injection accuracy and yield caused by insufficient distribution of the runner were solved, achieving high-precision injection molding and efficient production.

CN224510272UActive Publication Date: 2026-07-17GUIZHOU YAGUANG ELECTRONICS TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUIZHOU YAGUANG ELECTRONICS TECH
Filing Date
2025-07-30
Publication Date
2026-07-17

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Abstract

本实用新型公开了一种一出多腔的塑料环浇筑模具结构，包括底模，上模设置于下模上侧端面，两者接触端面形成多组浇筑区，主喷嘴，主流道，一级分流道，二级分流道，多个模具成型区，点浇筑嘴，冷却管道；采用底模，下模以及上模组成整个模具结构，并且下模以及上模两者的接触端面之间形成由二级分流道和模具成型区组成的浇筑区，通过在主喷嘴提供注料在主分流道和一级分流道的导流进入二级分流道，并在二级分流道上两侧设置相互对称设置点浇筑嘴的导流进入模具成型区，实现一个点浇筑嘴可对应一个模具成型区，并可保证注料的充足性，外接冷却管道冷却，有效解决因分流道分配注料分配不足，会影响产品注塑精度，导致产品成品率降低的问题。
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Claims

1. A multi-cavity plastic ring casting mold structure, comprising a bottom mold (1), a lower mold (2) and an upper mold (3) disposed on one end face of the bottom mold (1), the upper mold (3) being disposed on the upper end face of the lower mold (2), the contact end faces of the two forming multiple casting zones, characterized in that: The bottom mold (1) is provided with a main nozzle (10) on one end face that is in contact with the lower mold (2) and the upper mold (3). The main nozzle (10) is connected to multiple main channels (11) provided on the bottom mold (1). The end of the main channel (11) is provided with a primary branch channel (13), and the primary branch channel (13) formed therein corresponds to the contact seam between the lower mold (2) and the upper mold (3). The casting area includes a secondary distribution channel (20) and multiple mold forming areas (21). The secondary distribution channel (20) is interconnected with the primary distribution channel (13), and a point pouring nozzle (22) is provided between it and the mold forming area (21). The point pouring nozzle (22) is symmetrically arranged on both sides of the secondary distribution channel (20) and distributed in a tree shape. Cooling pipes are provided on one side of the casting area, including a lower mold cooling pipe provided on the lower mold (2) and an upper mold cooling pipe (30) provided on the upper mold (3).

2. A one-out-multiple-cavity plastic ring casting mold structure according to claim 1, wherein The main channel (11) is curved and a buffer zone (102) is provided at the connection with the primary branch channel (13).

3. A one-out-multiple-cavity plastic ring casting mold structure according to claim 1 or 2, characterized in that, A heating groove (14) is formed at the outer edge of the primary diversion channel (13), and a heating element (15) is embedded in the inner side of the heating groove (14).

4. A one-out-multiple-cavity plastic ring casting mold structure according to claim 2, wherein The point casting nozzle (22) includes: A pouring buffer zone (202) is connected to the secondary distribution channel (20) at one end, and the connection forms a pouring angle α. The cross-sectional area of ​​the buffer zone (202) gradually decreases on the side away from the secondary distribution channel (20). The pouring port has one end connected to the pouring buffer zone (202) and the other end connected to the mold forming area (21). The port is located away from the pouring buffer zone (202) and its cross-sectional area gradually decreases.

5. A one-out-multiple-cavity plastic ring casting mold structure according to claim 4, wherein The casting angle α is less than 90°.