Plastics hollow molding device template aided operation mechanism

Abstract

The invention relates to a template movement-assisting operating mechanism for a plastic hollow forming machine, which comprises a machine frame, and a plastic bottle pipe heating system and a blowing and stretching system which are arranged on the machine frame. The heating system comprises two chain wheels arranged on the plane, the chains matched with chain wheels, power driving the chains to operate, a heating bracket and a heating piece. A bottle pipe supporting seat is arranged on the chains, and the blowing and stretching system comprises a front template, a middle template, a rear template, a mould opening and closing mechanism for driving the templates and a blowing and stretching mechanism. The mechanism is characterized in that the power driving the chains to operate is from a slide rail arranged on the outer wall of the front template and a fixing plate arranged on one side; a thrusting cylinder is arranged on the fixing plate; the slide rail is provided with matched slideblocks; the slide blocks are connected with a shift fork; the slide blocks and the shift fork are driven by a piston rod of the thrusting cylinder; and the head of the shift fork contacts pins of thechains. The operating mechanism drives the shift fork by opening and closing the mould so as to save a cylinder and reduce the cost. The shift fork is directly controlled by the movement of the mouldwithout time difference, and the assembly, debugging and maintenance are convenient.

Description

technical field [0001] The invention relates to a stretch-blow molding machine for plastic hollow containers, in particular to a template-assisted operating mechanism of a plastic hollow molding machine, which is mainly used for processing various hollow plastic containers such as mineral water bottles and oil bottles, and belongs to the field of plastic machinery. Background technique [0002] When processing various hollow plastic containers such as mineral water bottles and oil bottles, the bottle tube heating system can be combined with the stretch blowing system. There is an operating mechanism for conveying plastic bottle tubes. When the plastic bottle tubes are heated, they can be automatically fed into the pull The molded bottle is produced in the blowing system. Since the stretch blowing system needs to complete the two stages of mold opening and closing and stretch blowing, the advancement of the running mechanism is intermittent. The existing power to drive the run...

AI Technical Summary

Problems solved by technology

[0002] When processing various hollow plastic containers such as mineral water bottles and oil bottles, the bottle tube heating system can be combined with the stretch blowing system. There is an operating mechanism for conveying plastic bottle tubes. When the plastic bottle tubes are heated, they can be automatically fed into the pull The molded bottle is produced in the blowing system. Since the stretch blowing system needs to complete the two stages of mold opening and closing and stretch blowing, the advancement of the running mechanism is intermittent. The existing power to drive the running mechanism is driven by a stepping motor or driven by a cylinder. Type, the main structure driven by the stepping motor is a chain installed on two sprockets, one of which is driven by the stepping motor, and the bottle tube supporting seat is hung on the chain to transport the plastic bottle tube. The disadvantage of this technical solution On the one hand, there is an error in the stroke driven by the stepping motor. Once the position of the plastic bottle tube entering the stretch blow mold deviates, the product will be scrapped; on the other hand, the stepping motor and supporting controls are easily damaged, and maintenance and debugging are troublesome, affecting production.

Therefore, the disadvantages of the existing cylinder propulsion technology are as follows: the one is that the structure is complicated, requiring 2 or 3 cylinders, the cost is high, and installation, debugging and maintenance are troublesome; , it is difficult to cooperate with the moving stretch blow mold, and the control system requires high requirements; the third is to install a manipulator with multiple cylinders on the side of the frame, which increases the volume of the whole machine, and the appearance is not neat, which affects the appearance

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