Servo motor driven fully-automatic plastic bottle blowing machine

Abstract

The invention discloses a servo motor driven fully-automatic plastic bottle blowing machine, which comprises a heating device and a stretching-blowing mechanism, wherein a blank sorting mechanism and a blank loading mechanical hand are arranged at an inlet of the heating device; a conveyor chain is arranged in the heating device; bottle blank supporting seats are arranged on the conveyor chain; a blank taking and bottle feeding mechanical hand is arranged in the stretching-blowing mechanism; a variable pitch mechanical hand is arranged between an outlet of the heating device and the blank taking and bottle feeding mechanical hand. The scheme has the main characteristics that servo motors are adopted for providing rotating power for the variable pitch mechanical hand and providing die opening, closing and locking power for stretching-blowing dies of the stretching-blowing mechanism, and compared with the adoption of a cylinder for providing power in the prior art, the scheme has the advantages that the servo motors can accurately act, and have small errors, and bottle blanks can be accurately conveyed in place; the two servo motors are high in action synchronism, so that the two stretching-blowing dies can be simultaneously closed in place with a small gap and without expansion, and the product is high in stretching-blowing quality and production efficiency.

Description

technical field [0001] The invention relates to a servo motor-driven full-automatic plastic bottle blowing machine, which belongs to the field of plastic machinery. Background technique [0002] Plastic raw materials are used to produce hollow plastic containers, such as mineral water bottles, oil bottles, etc. Firstly, the plastic raw materials are injected into preforms by injection molding machine. Blow molding. The existing equipment combines the heating device and the stretch blowing mechanism, and the embryo is heated by the same embryo transfer track, which is called a fully automatic plastic blow molding machine. There are preform support seats on the track, and the distance between each support seat It is determined by the size of the container after stretch blowing. Therefore, the distance between the supporting seats is large and the utilization rate of the heating device is low. Especially when producing large-capacity bottles, the heat utilization rate of the h...

AI Technical Summary

Problems solved by technology

However, in actual use, it was found that the rotating mechanism of the manipulator is driven by a rotating cylinder. Due to the poor movement accuracy of the cylinder, after a long period of use, the position error after the manipulator rotates becomes larger, and the heated preforms cannot be sent accurately. In the stretch-blow mechanism, the stretch-blow mechanism is blown empty, which affects the production efficiency

On the other hand, the existing stretch blowing mechanism adopts a two-way synchronous opening and closing mold clamping. The main structure includes two fixed templates (boosters) slidingly arranged at both ends of the frame, and the inner sides of the two fixed templates are respectively opened and closed. The mold locking mechanism is connected with the moving platen, and the inner sides of the two moving platens are equipped with half-pan molds, and the two half-pan molds correspond to each other. The opening and closing mold locking mechanisms described in the prior art are driven by the opening and closing mold locking cylinders, and the synchronization of the cylinder movements Poor performance, the two movable templates cannot be put in place at the same time, causing the two molds to collide, the preform in the mold will fall, causing the container to be scrapped, and it is easy to damage the mold, increasing the maintenance cost

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