A forming mechanism and forming method of a tubular parison plastic box

Abstract

The invention relates to a molding mechanism and molding method of a cylindrical parison plastic box. The center of the cylindrical parison die head is provided with an air blowing device, and a Y guide rail is provided on the ground below the cylindrical parison die head. There is a shuttle car, and the X guide rail is installed on the shuttle car. The left and right mold bases that can move synchronously or oppositely are installed on the X guide rail. The upper parts of the left and right mold bases are respectively equipped with a mold installation back plate. The left and right half molds are respectively installed on the opposite end faces of the cylinder. The clamping positions of the left and right half molds are located on the axis of the cylindrical parison die head. Stretching mechanism at the lower port and clamping mechanism that can close the lower port of the cylindrical parison. In the present invention, when the shuttle car is located outside the die head and the previous plastic box is removed, the stretching, clamping and pre-blowing actions are completed in advance. When the shuttle car returns to the bottom of the die head, the parison has been pre-blown and can be directly entered The mold closing step shortens the production cycle and greatly improves production efficiency.

Description

technical field [0001] The invention relates to a molding mechanism for a cylindrical parison plastic box, and also relates to a molding method for a cylindrical parison plastic box, which belongs to the technical field of plastic box manufacturing. Background technique [0002] The molding mechanism of existing tubular parison plastic box comprises tubular parison die head, and the center of tubular parison die head is provided with blowing device, and the ground below tubular parison die head is provided with Y guide rail, Y guide rail There is a shuttle car that can move along the Y guide rail, the X guide rail is installed on the shuttle car, and the left and right mold bases that can move synchronously and oppositely along the X guide rail are installed on the X guide rail, and the upper parts of the left and right mold bases are respectively installed There are left and right mold installation back plates, and left and right half molds are respectively installed on the...

AI Technical Summary

Problems solved by technology

[0004] Since the existing stretching mechanism and clamping mechanism are located on the shuttle car, when the shuttle car leaves the bottom of the tubular parison die, the stretching, clamping and pre-blowing of the next tubular parison cannot be carried out in advance. After the previous plastic box is cooled and shaped, the left and right half molds are separated, the previous plastic box is removed, and the shuttle car returns to the bottom of the cylindrical parison die head before the next parison can be stretched and clamped. And the pre-blowing action, the waiting time is at least 4 seconds, which prolongs the production cycle and affects the production efficiency

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