Automatic open mouth bagging machines are a high level of automation. They are designed to fill, weigh and seal various pre-made open mouth bags.
It is commonly used to pack bulk and solid granular materials. Therefore has a wide range of industrial applications such as feed, seeds, minerals, chemicals, etc.
The automatic open bagging system is accurate, fast, stable and safe. In addition, the wide range of adaptability is also its essential advantage. It can be combined with other auxiliary bagging equipment to form fully automated production lines, whether new or existing.
It is a complete and mature bagging solution that can help you improve packaging efficiency and quality, reduce labour cost, and finally make you more profit.
Therefore, purchasing an automatic open-mouth bagging machine is a profitable investment.
Last year, a customer from the United States ordered a fully automated open mouth bagging line for packaging protein powder.
This line has rich functions, including bag loading, filling, weighing, sealing, conveying, shaping, weight detection, metal detection and rejection.
All the actions are done automatically by the machine without human involvement. Then, let me show more details of this bagging line. Then you will know more information about this fully automatic bagging solution.
Table of Contents
- Fully Automatic Open-mouth Bagging Line Configurations
1.1 Net Weigh Open-mouth Feeding System
1.2 Automatic Loading Bags System
1.3 Automatic Bag Sewing System
1.4 Bag Kicker System
1.5 Bag Flattener
1.6 Bag Check Weigher
1.7 Bag Metal Detector Conveyor
1.8 Bag Reject Conveyor
1.9 Bag Curved Conveyor
1.10 Bag Conveyor System
1.11 Materials for Making Machines - Automatic Open Mouth Bagging System Working Process
2.1 Open Mouth Bagger Drawing
2.2 Open Mouth Bagger Technical Parameters
2.3 Open Mouth Bagger Working Video - Customer Inspect Automatic Open-mouth Bagger On-site
- Commissioning of Automatic Open Mouth Bagging Line
- Final Thoughts
▎1. Fully Automatic Open-mouth Bagging Line Configurations
This fully automatic packaging line has a wide range of configurations. We have optionally installed many other bagging equipments according to the customer’s needs, making this line with many functions.
OK, let’s explore these automated machines in the front-to-back order now.
1.1 Net Weigh Open-mouth Feeding System
Located at the beginning is the core part of the whole line: the feeding and weighing system.
We use a net weight feeding system. It is weighed by the hopper, which provides faster feeding and weighing accuracy than traditional gross weight feeding systems.
Because the weighing hopper is weighing simultaneously as the bags are being loaded, this feeding and weighing process can be done continuously without waiting for the bags to be loaded before weighing and feeding.
(You can also check this article, which explains the net weight system and gross weight system.)
Because our client wants to package the protein powder, we use the screw feeding method. The screw can effectively avoid the clogging of the powder material.
In addition, wxtytech’s screw bagging equipment is improved to the double-screw feeding system. It consists of a large screw and a small one. The large one aims to control the feeding speed, and the small one can control the feeding accuracy.
When the feeding starts, the two screws are fed together. When the weight of the material is about to reach the preset weight, the large one stops feeding, and the small one is fed separately.
Therefore, the double screw feeding system has the characteristics of fast and high precision, which is very suitable for packaging powder materials.
All load cells come from METTLER TOLEDO. These high-quality products can ensure accurate and stable weighing. Because wxtytech is good at customizing bagging machines, you can also specify the brand of the load cell. All our efforts are only to meet your needs better.
1.2 Automatic Loading Bags System
Loading bags automatically is the most critical function of the fully automatic bagging line. Your workers only need to put the pre-made open-mouth bags in the designated position. The suction cup on the mechanical arm will automatically suck up the bag and put it on the hopper’s outlet. Then the bag clamping mechanism will tightly clamp the bag open-mouth.
The program controls the whole set of actions without manual involvement, which is very efficient and convenient.
1.3 Automatic Bag Sewing System
After the material is filled, the bag clamping mechanism loosens the bag. The bag falls onto the belt conveyor. Another robotic arm will clamp the bag open-mouth and then send it into the guide rail for sewing the bag. The bag will automatically finish the sewing process with the conveyor belt’s direction.
1.4 Bag Kicker System
After sewing, the bag is in an upright position. We need to let it fall to complete the rest of the bagging process in a horizontal position. Therefore, the bag kicker system has an automatic push mechanism that lets the bag fall in the forward direction.
1.5 Bag Flattener
To facilitate the stacking of packages and enhance the stability of stacked goods, using the bag flattening machine makes the shape of the bags more regular and allows the protein powder in the bags to be distributed more evenly.
1.6 Bag Check Weigher
To ensure the bagging quality, using the weight check session is essential. The bag weight checker can check if the weight of each bag reaches a preset value.
When it detects a bad bag, it will signal the reject system. When the bad bag reaches the conveyor of the reject machine, the reject machine will push it out of the line.
1.7 Bag Metal Detector Conveyor
Food safety is paramount during the packaging process. Therefore, located behind the bag checkweigher is the bag metal detector. It can detect the presence of metal substances in the bags.
When a faulty bag is found, it will signal the reject system to push the failed bags out of the production line.
1.8 Bag Reject Conveyor
The bag rejector is essential to ensure that the bags at the end of the line are compliant.
It receives electrical signals from all testing equipment. It pushes all bags that do not meet the requirements out of the line, ensuring that those that pass through the line are qualified.
1.9 Bag Curved Conveyor
Usually, the bags are constantly moving in one direction. To minimize the footprint of the equipment, we use the bag turning conveyor to make it happen.
It enables the bags to move in the opposite direction, which can shorten the distance by half and significantly improve space usage efficiency.
1.10 Bag Conveyor System
The conveyor makes the bags move forward. And they connect all the automated machinery to form a completed packaging line, allowing the bags to move smoothly and steadily from machine to machine.
And our US customer did not order a bag palletizing system or a pallet wrapping machine. So, the whole packaging process is finished here. And the above equipment makes up this fully automated open mouth bagging line.
1.11 Materials for Making Machines
In addition to that, we need to ensure food safety while keeping production costs as low as possible. It has been wxtytech’s constant goal to provide cost-effective products to our customers.
Therefore, we use 2 kinds of metal materials to build the machine. For all parts that have contact with the material, we use 304 stainless steel; for the rest, we use carbon steel.
This solution has found a balance between quality and price and has been approved by our client.
In addition to those mentioned above, you can also click here to see more specifics about this fully automatic powder packaging line.
▎2. Automatic Open Mouth Bagging System Working Process
Next, let me introduce you to the working process of this protein powder automatic open-mouth bagging machine :
- Put the pre-made bag in the designated position.
- Suction cup on the bag suction mechanism sucks up the bag and sets the bag on the discharge outlet, and the bag clamping mechanism fixes the bag opening.
- The material in the weighing hopper flows into the bags.
- The bag sewing mechanical arm clamps the bag and sends it into the sewing guide.
- The bags are pushed down, and then the process of shaping, testing, and rejecting is completed in sequence.
- The bags go to the palletizing stage.
2.1 Open Mouth Bagger Drawing
2.2 Open Mouth Bagger Technical Parameters
| Model | LCS-TYQZD-25 |
|---|---|
| Packaging Capacity | 600 bags/h |
| Package Weight | 25 kg |
| Bag Size | 580*420*75 mm |
| Silo Volume | 80 L |
| Power | 4.6 kw |
| Precision | ±0.2% |
| Air Source Pressure | ≥0.5 Mpa |
| Total Weight | 460 kg |
| Overall Dimension | 1220*650*2360 mm |
2.3 Open Mouth Bagger Working Video
▎3. Customer Inspect Automatic Open-mouth Bagger On-site
Of course, during the whole production process, our customer also came to our factory to see the production status and operation of the entire equipment on site.
They expressed their approval of our products and production capacity.
Wxtytech would love to welcome you to visit our factory. Although the COVID-19 is currently raging and many of our friends cannot come to our factory, it is okay.
If you have friends or employees in China, you can ask them to come and see our factory on your behalf. Of course, we can also use live videos to show you the real-time situation inside our factory.
▎4. Commissioning of Automatic Open Mouth
Bagging Line
Towards the end of the production phase, our workers start to debug the whole production line to ensure that all mechanical parts can work well together and run stably.
All machines will be tested repeatedly before delivery to ensure that all equipment will operate well when they reach our customers.
Wxtytech requires all employees to bring a rigorous attitude to each product. We always adhere to our goal: to provide our clients with quality products that meet their requirements.
▎5. Final Thoughts
First of all, wxtytech is very grateful to this US customer for his trust. He gave us this opportunity to cooperate. We cherished this cooperation and manufactured the automatic open-mouth bagging machine to the customer’s satisfaction.
We are also looking forward to future cooperation and hope to let our superior technology help our customers complete more and more packaging projects.
Secondly, wxtytech is also very grateful to every employee. Because of your hard work and conscientiousness, we were able to complete this project so well. You are always wxtytech’s most valuable asset.
We hope more and more customers will use bagging machines from wxtytech in the future and let them help you get more profit. I look forward to hearing from you.




