Empty Cans Inspection Machine
1.With an image inspection system developed independently,
2.the maximum speed can reach 1000 cans / min.
3.Reliable detection and stable operation for long time Easy to install and easy to operate
I. Equipment Parameters and Site Description
1. Project Overview
1.1 Project Name: Empty Can Inspection System
1.2 Description: This system adopts advanced machine vision technology to perform fully automated, non-contact, online inspection of empty cans. It detects mouth deformation, dents, foreign particles on the can body, foreign matter inside the can, and under-pressurized cans.
1.3 Rated Capacity: 1000 cans/minute
1.4 Container Type: Two-piece cans
1.5 Product Volume Range: 100 mL – 600 mL
2. Environmental Conditions
Operating Altitude: 5–3000 m above sea level
Temperature Range: 5°C–40°C
Relative Humidity: 50%–65% RH
Factory Requirements: Floor flatness and load-bearing capacity must meet national standards to ensure proper machine operation.
Storage Requirements: Upon delivery, all parts and equipment must be stored according to national standards. Adequate lubrication and maintenance are required during storage to prevent surface damage or deformation that could affect installation, commissioning, and performance.
3. Operating Conditions
Noise Level: ≤85 dB (actual levels may vary depending on container type, machine load, and acoustic environment).
Power Supply:
Voltage: 220V, 50Hz, single-phase (customer provided; special voltages must be specified in advance as they may affect specifications, lead time, and pricing).
Total Power Consumption: ~1.0 kW
Control Voltage: 24 VDC
4. Equipment Description
4.1 System Overview
Equipment Name: Empty Can Detector
Model: MT-YLG-KG-C1-01
Quantity: 1 set
Inspection Capacity: 1000 cans/minute
Applicable Container: Two-piece cans
Production Line Compatibility: Up to 1000 cans/minute capacity
Installation Position: On the single-lane conveyor before the filling machine
Function: Inspects empty cans for defects such as mouth deformation, tearing, V-notch edges, flaps, dents, body contamination, and internal foreign matter, and automatically rejects defective cans online.
4.2 System Principle, Process, and Installation
Working Process:
A positioning sensor detects the incoming can, records its ID, and logs the encoder value through the control unit.
The camera is triggered to capture the can image, which is then analyzed by the image processor. Results are sent to the HMI for live display and to the control unit for rejection decisions.
The PLC receives the rejection command and signals the rejector to remove the defective can corresponding to the recorded ID.
Installation Requirements:
Customer must provide a 2 m straight conveyor section.
Cans must not be squeezed together; spacing of ~2 cm between cans is essential.
This condition is critical to ensure reliable inspection accuracy.
4.3 Empty Can Detection Module
Inspection Scope and Accuracy:
(Details to be specified according to defect detection capability and system performance).
Figure 5: Defective empty cans
Detection position
| Defect type
| Accuracy
| Illustration
| Rejection rate
| False rejection rate
|
Can mouth
|
Can mouth curling notch
|
1 mm X 1 mm |
≥99.9% |
≤0.05% | |
Deformation of the can mouth flange
| Upward or downward protrusion height ≥ 2mm or horizontal length ≥ 4mm
|
≥99.9% | |||
Depression at the mouth of the tank
| 5% overall
| ≥99.9% | |||
Can mouth ovality
| ≥1cm | ≥99.9% | |||
Dirt on the can edge
| 2 mm x 2 mm, thickness ≥ 1 cm
| ≥99.9% | |||
Tank inner wall
| Dirt in the middle of the inner wall
| 3 mm x 3 mm, thickness ≥ 1 mm
| ≥99.9% | ||
bottom of jar
| Foreign matter in the middle of the tank bottom
| 3 mm x 3 mm, thickness ≥ 1 mm
| ≥99.9% | ||
Foreign matter (opaque) inside the tank bottom ring
|
3 mm x 3 mm, thickness ≥ 1 mm
|
≥99.9% | |||
Hole in the middle of the tank bottom
| 3 mm X 3 mm | ≥99.9% | |||
Can body
| Can body deformation
| Deformation: 4mm Deformation: ±1mm
| ≥99.9% | ||
Description (Please read carefully)
| This solution adopts a single-station single-lens inspection method, the main purpose of which is to control the can mouth (strict precision), large flat cans and large foreign objects. Since the subsequent processes include hot water washing and filling with nitrogen, small foreign objects can be washed away by hot water. Therefore, the detection accuracy of small foreign objects and small deformation of the can wall will be lower.
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