Stretching and sealing linkage mechanism

Abstract

The invention relates to a stretching and sealing linkage mechanism. The stretching and sealing linkage mechanism comprises a support, a fixed seat, a cylinder body, a piston rod, a sealing sleeve anda stretching assembly. The fixed seat is fixed to the lower end of the front side of the support. The cylinder body is fixed to the front side of the fixed seat. The piston rod is vertically insertedin the cylinder body in a penetrating manner and can move up and down. The sealing sleeve is fixed to the lower end of the piston rod and arranged on the lower side of the cylinder body. The stretching assembly is arranged on the support and connected with the piston rod. According to the stretching and sealing linkage mechanism, rapid and precise linkage of a stretching rod and the piston rod can be achieved without a stretching air cylinder and a sealing air cylinder, cost is reduced, and motion deviation between the stretching rod and the piston rod is eliminated so as to guarantee that the bottle blowing process is normally carried out.

Description

technical field [0001] The invention relates to a stretching and sealing linkage mechanism. Background technique [0002] During the blowing process of the bottle blowing machine, high-pressure air is blown into the preform through the blowing piston rod in the sealing cylinder, and the preform is blown into shape. This process requires the stretching and sealing linkage mechanism to make the blowing piston rod and The preforms are well sealed to avoid air leakage. At the same time, the stretching rod in the stretching and sealing linkage mechanism needs to move down to stretch the preform wall. After the bottle is blown, the stretching rod and blowing piston The rods all move upward to reset so that the manipulator can take out the bottle. [0003] The up and down movement of the stretching rod in the existing stretching and sealing linkage mechanism is performed by the stretching cylinder, and the up and down movement of the piston rod of the sealing cylinder is performed...

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Problems solved by technology

[0003] The up and down movement of the stretching rod in the existing stretching and sealing linkage mechanism is performed by the stretching cylinder, and the up and down movement of the piston rod of the sealing cylinder is performed by the sealing cylinder, but the response and moving speed of the stretching cylinder cannot be compared with that of the stretching cylinder. The speeds of response and movement match each other, resulting in poor linkage between the stretching rod and the piston rod of the sealing cylinder, resulting in deviations in the movement timing of the stretching rod and the piston rod of the sealing cylinder, which cannot guarantee the normal progress of the blowing process. Improve

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