Injection molding structure for avoiding eccentricity of blind hole tube

CN224689482UActive Publication Date: 2026-08-28NANTONG DIEFU MOLD CO LTD
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Patent Information

Application Number
CN202521399844.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-04
Publication Date
2026-08-28
Estimated Expiration
2035-07-04

AI Technical Summary

Technical Problem

现有的盲管注塑件在生产时经常出现偏心的现象，偏心的盲管注塑件存在尺寸不准确的问题，导致其与其他部件配合时会出现问题，因此无法进行量产；偏心的盲管注塑件在力学性能上也会受到影响，会降低强度和韧性，在使用过程中，偏心的盲管注塑件会因为受力不均而导致破裂或变形，从而影响正常使用，缩短使用寿命

Benefits of technology

设置的型腔开设有通孔，靠近型腔板的通孔内壁卡合有定位件，定位件设有定位齿部，型腔板连通有热流道，注塑胶液首先从热流道流入型腔板与定位件形成的内腔，随后注塑胶液流经相邻定位齿部之间的空隙、进入模芯与型腔之间的间隙，最后到达型腔左端的盲孔段，定位件在注塑成型后与盲孔管包成一个整体，从而避免了偏心及尺寸不准确的问题，能够进行量产，盲管注塑件的力学性能得到保障，延长了使用寿命，便捷可靠。

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Abstract

The utility model discloses an injection molding structure of avoiding eccentricity of blind hole pipe, be provided with the cavity (11) between A board (3) and push plate (4), the left side of push plate (4) is connected with B board (5), is provided with the mould core between the cavity (11), push plate (4), B board (5), and the clearance fit between the through -hole of mould core and the cavity (11) is seted up, the left end of cavity (11) is provided with blind hole section, the right end of cavity (11) is provided with cavity plate (18), and the through -hole inner wall close to cavity plate (18) is clamped with positioning piece (16), and positioning piece (16) is equipped with the location tooth portion (17), and the hot runner is communicated with the cavity plate (18), and the hot runner is assembled in the runner plate (2), the positioning piece of the utility model setting is formed with blind hole pipe after injection molding one whole, thereby avoided eccentricity and the problem of inaccurate size, and the mechanical properties of blind pipe injection molding piece are guaranteed, and the service life is prolonged.
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Claims

1. An injection-molded structure for avoiding eccentricity of blind-hole tubes, characterized in that: Includes plate A (3) and push plate (4), with cavity (11) provided between plate A (3) and push plate (4), and plate B (5) connected to the left side of push plate (4). A mold core is provided between cavity (11), push plate (4) and plate B (5), and the mold core and the through hole opened in cavity (11) are in clearance fit. A blind hole section is provided at the left end of cavity (11), and cavity plate (18) is provided at the right end of cavity (11). A positioning element (16) is engaged with the inner wall of the through hole near cavity plate (18), and the positioning element (16) is provided with positioning teeth (17). A hot runner is connected to cavity plate (18), and the hot runner is assembled on runner plate (2).

2. The injection molding structure for avoiding eccentricity of blind hole tubes according to claim 1, characterized in that: The mold cores include mold core one (7), mold core two (8), mold core three (9), and mold core four (10).

3. The injection molding structure for avoiding eccentricity of blind hole tubes according to claim 1, characterized in that: The hot runner includes hot runner one (15), hot runner two (14), hot runner three (13), and hot runner four (12).

4. The injection molding structure for avoiding eccentricity of blind hole tubes according to claim 1, characterized in that: The flow channel plate (2) is connected to a panel (1) on its right side.

5. The injection molding structure for avoiding eccentricity of blind hole tubes according to claim 1, characterized in that: A base plate (6) is provided at the left end of the B plate (5).

6. The injection molding structure for avoiding eccentricity of blind hole tubes according to any one of claims 1-5, characterized in that: The number of teeth in the positioning tooth section (17) is 10.