Blow molding device for a rotary bottle blowing machine

摘要

A blow molding device for a rotary bottle blowing machine includes just needs one drive source to rotate a coaxial drive device, then first, second and third control members will move the movable mold portion, the bottom mold portion and the locking block, to carry out the operation of mold opening and closing, lifting of the bottom mold portion, and locking and unlocking of the locking block. Therefore, the structure of the blow molding device is simplified, and operation efficiency is improved, and cost is reduced.

主权项

1. A blow molding device for a rotary bottle blowing machine comprising:
a support platform with a hole; a coaxial drive device disposed adjacent to the support platform and including a drive shaft extending along a first direction, and a first control member, a second control member which are sleeved on the drive shaft, the first control member including a first control portion, the second control member including a second control portion, the first control portion is a cam slot whose depth extends along the first direction, and the second control portion is a guide slot which consists of at least two slanting sections, and the two slanting sections being symmetrically arranged at an angle with respect to the first direction; a stationary mold portion being nonrotatably fixed on the support platform; a movable mold portion being rotatably disposed on the support platform by a movable-mold shaft, the movable-mold shaft being rotated by the first control portion to open and close the movable mold portion with respect to the stationary mold portion; and a bottom mold portion being mechanically supported to the support platform and capable of sliding with respect to the hole along the first direction, the bottom mold portion being driven to move along the first direction by the second control portion.