Quality inspection system of PET bottle embryo

2022-06-23
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Quality inspection system for PET bottle embryo (Part 2)

typical side wall and bottle bottom defects that can be detected

¨ foreign particles → focal lines

¨ dirt → water lines

¨ bubbles → crystallization

¨ insoluble matter → color change

¨ stripes → long injection points

color change control

except for bottle bottom defect detection, preformer? An advanced visual analysis method is used to detect color defects (color changes) of bottle embryo. The brightness of each bottle embryo is compared with the reference signal of the standard bottle embryo during system calibration. Those bottle embryos with color changes will be removed

seal integrity control

preformer? A vacuum test module is integrated to verify the integrity of the sealing surface and identify the leakage caused by various causes. The vacuum test assembly has a rotating wheel with 10 spherical probes, which are driven vertically by a mechanical cam. Each probe is connected to a vacuum pump supported by a special pressure device. During the test, each bottle embryo entering the test is subject to the vacuum pressure of the set level. Bottle embryos that fail to maintain vacuum pressure through all rotating wheels will be removed. With this method, bottle embryos with sealing surface defects, small pinholes and out of round bottle mouth can be easily detected

typical defects related to the sealing surface that can be detected

¨ there are fragments or gaps on the sealing surface → pinholes

¨ the bottle mouth is elliptical → the bottle mouth injection is insufficient

the taxi adopts the "ultra-fine drainage hull condition (udh)" ¨ leakage → other various sealing defects

user-friendly control/easy operation

preformer? The user interface of the operating software is friendly and easy to understand. Only a little computer knowledge is required to operate and set up. The simple intuitive design of the operation screen enables operators to operate effectively with little training

various bottle embryo clamping treatments

due to the flexibility and special design of the clamp mechanism, preformer? It can be easily clamped from 0 0 liter bottle embryo of various sizes

comprehensive bottle embryo quality testing system

preformer? The quality test system is designed by preformer? The detection module is combined with some related facilities. They are combined to provide complete bottle embryo processing and detection functions

a typical system consists of the following parts:

preformer? Detection module

bottle embryo feeding system

bottle embryo loading box

bottle embryo loading equipment

optional bottle embryo processing equipment

bottle embryo loading box

bottle embryo loading box is composed of stainless steel frame and plastic lining whose price is usually 2~3 times that of electronic mechanics experimental machine. It is combined with a horizontal conveyor belt to continuously feed the hoist without interruption and blockage

bottle embryo feeding system

the system is composed of a hoist, a bottle embryo finisher and a gravity embryo feeder to feed the preformer? The detection module provides bottle embryo. All components are of stainless steel construction. And they are adjustable to adapt to different kinds of bottle embryos. They can be set to -90 °/0/+90 ° position to achieve the best positioning. When there is no bottle embryo, the sensor on the gravity embryo feeder will give the preformer? The detection module sends a signal

bottle embryo loading equipment

bottle embryo loading equipment can orderly transfer the bottle embryo from the mass carrier box to the bottle embryo loading box without damage. This device is compatible with many standard bulk carrier operations

product specification and performance

bottle embryo compatibility

bottle embryo model: length from 50 to 200 mm (inches)

bottle capacity from 0.25 to 3 liters

mouth range: from 28 to 43 mm *

color: transparent, brown, green and blue

(Note: there are some restrictions on some blue bottle embryos)

performance specification:

detection speed: 22000 bottle embryos/h maximum

repeatability: 98% (average)

false rejection: 0.5%

minimum detectable visual defect size: 0.35 mm within 150 mm

variety replacement: no more than minutes when necessary components are available

component standard: CE, Tuv

physical size

application

power supply: 3-phase 400V - 50 Hz or 440V - 60 Hz

compressed gas: 7 bar/100 psi

operating environment

temperature: 10 - 40 ℃ (50 – 104 ℉)

humidity: 10 – 85% non condensing

* note - parts need to be replaced for different mouth sizes in recent two months

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