Single mold opening mechanism of bottle blowing machine

Abstract

The invention discloses a single mold opening mechanism of a bottle blowing machine. The single mold opening mechanism comprises a formwork bracket, a fixed-edge mold, a mold opening and closing rotating shaft capable of being rotatably arranged on the formwork bracket around the first shaft axis, a mold opening and closing rotor arm, a movable-edge mold, a bottom mold bracket capable of being rotatably arranged on the formwork bracket around the second shaft axis, a bottom mold guide rail, a bottom mold, a bottom mold connecting rod, a bottom mold swing arm, a bottom mold swing rod, a space connecting rod, a bottom mold crank and a bottom mold pull rod; the first shaft axis and the second shaft axis are correspondingly located on the two sides of a mold assembly center line; when the bottle blowing machine opens the mold, the mold opening and closing rotating shaft is used for driving the movable-edge mold to rotate away from the fixed-edge mold and driving the bottom mold bracket tomove towards the mold opening; and the bottom mold bracket is used for driving the bottom mold to descend. According to the single mold opening mechanism of the bottle blowing machine, the movement rule of the movable-edge mold and the bottom mold can be accurately controlled, the structure is simple, the dynamic load is small, vibration and impact of the mechanism can be effectively reduced, partabrasion is reduced, the movement stability and reliability of the bottle blowing machine are enhanced, and the high-speed performance of the whole machine is improved.

Description

technical field [0001] The invention relates to the technical field of bottle blowing, in particular to a single mold opening mechanism of a bottle blowing machine. Background technique [0002] The bottle blowing machine is the key equipment for producing various plastic bottles for liquid packaging. The blow molding machine has strict requirements for each process and high requirements for mutual cooperation, especially for the synchronous control of the opening and closing movement of the single mold side mold and the swinging movement of the bottom mold. strict. [0003] In the existing bottle blowing machine, the planar four-bar linkage mechanism realizes the opening and closing of the side molds, the composite mechanism formed by the cylindrical space cam and the space linkage mechanism realizes the swing and lifting of the bottom mold, and the space linkage mechanism realizes the swing of the bottom mold. Bottom mold realizes lifting simultaneously under the drive of...

AI Technical Summary

Problems solved by technology

Disadvantages: 1) The design and machining accuracy of the cam flange or groove profile of the cylindrical space cam is high, the installation and positioning of the cam is difficult, and the rotor is easy to get stuck; 2) The contact surface between the rotor and the cam profile is easy to form point contact, and the pressure The stress is large, the rotor is easily damaged or the cam surface is easy to wear; 3) Due to the limitation of the space size, the pressure angle of the cam is usually too large. Similarly, the rotor is easily damaged or the cam surface is easy to wear

Images