The design of the injection mold of multiple points, plates and molded surfaces is simplified by using lock catch facility, joined tie-bar structure and decreasing the guide-pin amount.
应用锁扣装置、组合拉杆结构，减少导柱数量，简化了多点多板多分型面注塑模具的设计。
When the pin switch is pushed on, the handle and the tool bar form into an integral structure, which can be used as a common screwdriver.
回拧时，将销子开关推上，刀柄和刀杆形成整体，作为普通螺丝刀使用。
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