Crank, manufacturing method of crank and mold for crank injection molding

The invention relates to a crank, a manufacturing method of the crank and a mold for crank injection molding, the crank comprises a curved bar, mounting cylinders are fixedly mounted at the two ends of the curved bar, the mounting cylinders are provided with mounting holes, and the outer wall of the...

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Bibliographische Detailangaben
Hauptverfasser:	ZHONG YUANCHEN, ZHU JIANWU, JIANG FUXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CYCLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a crank, a manufacturing method of the crank and a mold for crank injection molding, the crank comprises a curved bar, mounting cylinders are fixedly mounted at the two ends of the curved bar, the mounting cylinders are provided with mounting holes, and the outer wall of the curved bar and the outer walls of the mounting cylinders are fixedly wrapped with protective sleeves. The crank has the effect that the situation that after the crank is scratched, the cranked lever and the mounting cylinder are exposed in air and are oxidized and damaged is reduced. 本申请涉及一种曲柄、曲柄的制造方法及曲柄注塑用模具，其包括曲杆，所述曲杆的两端均固定安装有安装筒，所述安装筒具有安装孔，所述曲杆的外壁和安装筒的外壁均固定包裹有保护套。本申请具有降低曲柄剐蹭后，曲杆和安装筒暴露在空气中氧化损坏的情况出现的效果。