Apparatus and method for inspecting preform

Abstract

The present invention provides an apparatus and a method for inspecting a preform. The apparatus comprises the following components: an inner guide rail, an inner star wheel part, a turret assembly, a gate cutting part, a preform rotating part, a first inspecting module, an outer star wheel part, a second inspecting part and an outer guide rail. The apparatus can perform preform inspection quickly and accurately, and analyzes defects of the preform in relationship with the preform inspection result. The apparatus further comprises a supporting ring inspection part which inspects foreign object at a first area of the preform, which corresponds with the upper surface of the supporting ring, and a second area of the upper surface of the supporting ring, which is jointed with the preform neck. The apparatus further comprises the following components: a supporting frame which is vertically arranged at a mounting platform of the apparatus frame; a frame joint which is arranged at the end of the supporting frame in a manner for adjusting a photographing angle; a supporting ring inspection part which is arranged on a substrate board of a frame joint in a manner of facing the supporting ring of the preform; and a light source part which is arranged on a placement platform of the mounting platform at inside part of the preform and irradiates light to the preform side.

Description

technical field [0001] The invention relates to a preform inspection device and inspection method. Background technique [0002] Generally, a preform made of PET (polyethylene terephthalate) is supplied to a blow molding device or a stretch-blow molding device in order to manufacture items such as bottles or flasks Hollow containers like that. [0003] One end of the length direction of the preform is closed, and a neck (neck) is provided at the end on the opposite side of the opening. In fact, the lower part of the neck includes an integrally formed tubular body (body). The blank can have the final container shape after the injection molding operation. [0004] the prior art as background to the invention, figure 1 The preform inspection device 10 shown in Patent Document 1 includes: a preform supply unit 1 that supplies the preform P to a first preform transfer unit 3; and a drive unit 2 that supplies the preform. Check the power required for the operation of the devic...

AI Technical Summary

Problems solved by technology

[0034] That is, the inspection section 8 of Patent Document 1 can only inspect the inner surface of the neck. In the case of foreign matter, there is a disadvantage that the visibility is reduced and it is difficult to check the inside of the billet neck

[0035] on the other hand, figure 1 The gate dividing part 11 in the center is located on the revolution path of the first preform transfer part 3, and cuts off the gate (protrusion) of the lower part of the preform P. At this time, only the preform P When the upper part is lifted by the first suction port 3b of the push rod 3a and moves, the gate on the upper part of the preform P comes into contact with the gate division part 11 and at the same time swings with a slight deviation in angle, so there is a gap that cannot be formed horizontally. Disadvantages of cutting

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