Visual Packaging Inspection Equipment for Ice Cream Paper Cups

Product label is an important "status symbol" of a product, and traditional label uses direct screen printing, heat shrinkable labels, and self-adhesive labels to mark products. However, in the frozen product industry, traditional labels are easy edge curling, blistering, and shedding caused by freezing and dampness will affect the next product sales. The birth of in-film stickers is the beginning of a good change to this phenomenon. This is a new label packaging form that is different from the traditional,both strong and beautiful, and It is also widely used in other industries in the packaging field. The existence of in-mold stickers not only makes the overall cost of the product significantly lower than traditional labels and direct silk screen printing, but also, the entire body of the in-mold trademark is made of polyolefin materials, which can be crushed and reused with the container without being peeled off, and no secondary pollution occurred.

However, in the production process, after the film is blow molded, it cannot be detected separately. Therefore, in the production process, through the detection of the product appearance, possible problems in the production line can be analyzed, and Keye Tech will design a overall detection plan for the cup body, systemically detect the packaging details of the product.

1. Detecting products

PP in-mold cup products, used for food packaging, see actual samples for details.

2. Detection principle

Through the docking conveying device (the product needs to be output in a straight line with the mouth facing upwards, and the product spacing must be kept above the radius of the cup mouth), the products are transferred to a specific station in a stable and orderly manner,and then the high-pixel sample image taken by the industrial camera is transferred to the image processing software, and the standard sample is compared and analyzed to determine the good product and the defective product, and control the corresponding pneumatic to remove the defective products and finally collect the qualified products.

The software will open the sample comparison standard, and the production personnel on the customer site can control the comparison accuracy and choose the accuracy standard most suitable for their own production conditions, thereby controlling the product defect rate.

3, Detecting details

Our design plan adopts 14 sets of high-pixel industrial cameras and high-performance stroboscopic light sources to carry out a full range of visual detection for the appearance defects of the bottle body. The detection speed is 120 pieces per minute. The equipment can realize 7*24 hours of operation, and the unqualified products can be automatically rejected online.

The whole set of detecting equipment includes mechanical parts, visual electronic hardware and detecting system software. The entrance and exit of the detecting machine can be integrated with the on-site conveyor line (see the design drawings for details), and can be connected to the upstream and downstream production equipment according to the specific production needs of the customer.

The detecting equipment is shown in the figure below (reference):

The detection equipment needs to be maintained and cleaned regularly during use (such as conveyor belt cleaning, camera cleaning, etc.), and the counting function can be realized after the finished product is detected.

4.System composition

(1) Mechanical part:

The mechanical part is the core component of the system, which carries all the transmission devices and electronic hardware (industrial cameras,

Light source, industrial computer, touch screen, electrical box, etc.).

The conveyor belt adopts a vacuum adsorption belt to adsorb and fix the sample on the surface of the belt without sliding, so that the picture can be accurately taken.

(2) Hardware part:

The hardware part includes camera, lens, light source, high-speed air valve, computer, touch screen and other electrical equipment.

(3) Detection software:

The software is the master control platform of the equipment, and the specific functions are as follows:

1. Enable and close the system detection function
2. Adjustment of detection index parameters and accuracy.
3. Template sampling and storage, sample detection information storage and recall.
4. Camera screen calibration function
5. System real-time production information (qualified rate, total output, speed, etc.) display, historical production information browsing, export and storage functions.
6. Permission management based on the login account (such as general operation users disable parameter adjustment permissions)
7. Operation and adjustment of the mechanical part of the system (such as the opening of the transmission device, the control of the cylinder, the adjustment of the alarm signal)
8. Other functions

 Images collected by real machine (see actual samples for details):