The invention discloses an all-plastic trundle, and belongs to the field of injection molding parts. The all-plastic trundle comprises a bearing, a spoke plate and a soft rubber outer ring, the spokeplate sleeves the outer wall of the bearing, a limit groove matched with the bearing is arranged in the middle of the spoke plate, and clamping protrusions are integrally formed at two ends of the limit groove of the spoke plate; and the soft rubber outer ring sleeves the outer wall of the spoke plate, an inverted buckle protrusion is integrally formed in the middle of the inner wall of the soft rubber outer ring, and a dovetail-shaped groove matched with the inverted buckle protrusion is integrally formed in the outer wall of the spoke plate. The invention also provides an injection molding process for producing the all-plastic trundle. The injection molding process comprises the following steps of performing injection molding on the soft rubber outer ring to ensure the formation of the inverted buckle structure, performing injection molding on hard plastic in the middle to form the spoke plate, and wrapping the soft rubber outer ring and the bearing to form a structure of wrapping the soft part by the hard part, so that the spoke plate and the soft rubber outer ring are connected more tightly, the trundle is more silent and wear-resistant in use, and the service life is longer.
一种全塑脚轮,属于注塑件领域,包括轴承、轮辐板和软胶外圈,轮辐板套设在轴承外壁,轮辐板中部开设有与轴承相匹配的限位凹槽,轮辐板的限位凹槽两端一体成型有卡位凸起,软胶外圈套设在轮辐板外壁,软胶外圈内壁中部一体成型有倒扣凸起,轮辐板外壁一体成型有与倒扣凸起相匹配的燕尾状凹槽。并提供了一种生产上述全塑脚轮的注塑工艺,先注塑软胶外圈,保证倒扣结构的形成,再注塑中间的硬塑料,形成轮辐板,把软胶外圈和轴承包住,形成硬包软的结构,使轮辐板和软胶外圈的连接更紧密,脚轮使用起来更加静音、耐磨,使用寿命更长。
All-plastic trundle and injection molding process thereof
一种全塑脚轮及其注塑工艺
2020-10-13
Patent
Elektronische Ressource
Chinesisch
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