In the process of changing PET from material to bottle, there is a
very critical process, namely bottle blowing. The bottle blowing
machine transforms each preform into various shapes of packaging
bottles. The bottle blowing machine drives the bottle preform by
high-speed rotation to achieve molding. During the molding process,
the quality of the bottle mouth is particularly critical. If there
are defects such as damage, cuts or even deformation, the
subsequent filling and capping will lead to poor sealing of the
bottle, which not only causes a lot of waste, but also causes the
internal liquid to deteriorate, so it is particularly important to
detect the defects of the bottle mouth.
System overview
The system transports the ice tea packaging bottle samples to the
predetermined station in a stable and orderly manner, and then
transmits the captured sample image to the image processing
software through the high-pixel industrial camera, compares with
the standardized sample and distinguishes the defective product and
the good product, and remove defective products through compressed
air. The false detection rate is 0.03.
The software sets the comparison standard for the samples,
operators can control the comparison precision and choose the
precision standard that best suits themselves, thereby controlling
the defect rate.
The detection performance is as follows:
-Detection of the bottom of the outside of the bottle (1 set of
camera): detect whether there are holes, black spots, stains, mark
label missing and other defects.
-Detection of the bottom of the inside of the bottle (1 set of
camera): detect whether there are black spots, stains, foreign
objects and other defects.
-Bottle mouth detection (1 set of camera): detect whether there are
deformation, lack of material, overlap, burrs, black spots, stains,
and other defects, to ensure that the bottle mouth is intact.
-Bottle body detection (8 sets of camera): inspect all appearances
for defects such as black spots, stains, impurities and damage,
holes, and serious uneven thickness. Including whether the bottle
packaging is intact, missing labels, missing labels, curling,
stains.
-Detection speed: 200-220pcs/min
-Detection accuracy: 0.2mm
-Precision: 99%
-Detection range: The entire bottle, including the inner and outer
bottoms, and the bottle mouth.
System composition
1. Mechanical part
The customer should inform the height and size of the on-site
equipment in advance to facilitate the docking of the equipment
conveyor belt inlet and outlet with the customer’s on-site conveyor
line. The transmission part is the core component of the system,
which carries all the transmission devices and electronic hardware
(industrial cameras, light sources, industrial computers, touch
screens, electrical cabinet, etc.) . The transmission part adopts
advanced separation technology and vacuum adsorption technology to
ensure that the electronic system captures images quickly and
accurately. After the detection is over, the equipment adds the
function of counting the detection products. The counting accuracy
is 100%.
2.Software part
The software is the general control platform of the equipment, and
the specific functions are as follows:
-Open and close the system detection function
-Adjustment of detection index parameters and accuracy.
-Template sampling and storage, sample detection information save
and recall.
-Camera image calibration function
-The system displays real-time production information
(qualification rate, total production, speed, etc.), historical
production information browsing, export and save functions.
-Permission management based on the login account (such as general
operation users disable parameter adjustment permissions)
-Operation and adjustment of the mechanical part of the system
(Such as open the transmission device, the adjustment of the air
valve blow time, and the adjustment of the alarm signal)
-Additional functions that Party A needs to add
3. Hardware part
This detection system uses 11 high-pixel industrial cameras and
supporting industrial lenses, with 3 sets of high-brightness
stroboscopic light sources, which can truly achieve 360-degree
detection of the bottle body.
The overall logic control of the system is realized by a
single-chip microcomputer, and the specific functions include:
-Trigger the camera to take pictures
-Trigger light source strobe
-Trigger solenoid ejector blow to eliminate waste
-Control the belt speed
-Emergency handling in the case of material jams in system
-Trigger the warning light signal
| System operating parameters |
| Dimensions | 2.4×1.0×1.8(m) | Power and frequency | 220V 20A 50HZ |
| Total power | 3.5kw | Air pressure | 0.5~0.8MPa Purify and oil-free |
| Working temperature | -20℃ ~ 60℃ | Working humidity | Below 50% relative humidity |
| Sample diameter | 10mm-120mm | Sample height | 20mm-200mm |
Machining process
