There is a conversation about how to make the product more stable

Introduction of three-side sealing bag machine

In today's increasingly growing food packaging industry, the demand for bags of plastic composite film and other materials has also increased. The three-side sealing bag machine (Fig. 1) is used for the production of various plastic-plastic, paper-plastic composite materials, which are widely used in plastic composite film, aluminum-plastic composite film, paper-plastic composite film and other three-side sealing. The bag is an ideal bag making device for all kinds of middle and sealed bags. At the same time, it is suitable for the manufacture of special-shaped bags such as stand-up bags, bump buckle bags and zipper bags.

This system adopts VEICHI motion controller + servo bag making machine system with 4 1.3KW pull material servo, one 0.75KW rear discharge inverter, one 4KW main frequency inverter, and VEICHI high performance V5 motion controller (Hereinafter referred to as V5) as the control mechanism, the HMI is used for human-computer interaction, and the temperature control module controls the thermocouple heating through the solid state relay to reach the temperature of the customer's heat sealing. Normal operating speed can reach 120-150 bags / min (200mm bag length).

Figure 1: Three-side sealing bag machine

Equipment structure

1. The structure of the three-side sealing bag machine is mainly composed of the following parts:

1） Rear discharge mechanism: the inverter is controlled by the magnetic powder clutch to control the discharge tension;
2） heat sealing mechanism: driven by the frequency conversion device, to do the up and down reciprocating motion, the thermocouple heats the sealing knife to achieve the effect of sealing the bag, consisting of horizontal and vertical seals, transverse sealing on both sides of the bag for heat sealing, vertical sealing Heat sealing the bottom edge of the bag, the so-called three-side seal;
3） Feeding mechanism: The feeding roller is driven by the servo to achieve the purpose of feeding. It is necessary to ensure that the heat sealing mechanism sends the set length of plastic bag to the overheating sealing mechanism before leaving the cutting roller and reaching the cutting roller again. There are two kinds of servo working modes close to the cutter. One is the fixed length mode: the pulse of the set length stops when the pulse is finished, and the other is the calibration mode: the low pulse search for the set pulse number, the color code The photoelectric signal stops. The other three servos are synchronized with each other;
4）Cutting mechanism: cutting the bag with heat sealing;

2. The structure of the three-side sealing bag making machine is shown in the figure below (Figure 2).

Figure 2: Three-side sealing bag machine structure

System solution implementation

1. The VEICHI product and hardware components applied to the system are shown in the following figure (Figure 3).

Figure 3: System hardware components

2. Solution realization:

1） Using VEICHI high-performance V5-MC104 motion controller as the upper control, output pulse to position control of 4 pull servos, V5 has a unique 4-axis high-speed output design, the highest output frequency is 3MHz, the shaft port and SD700 The series servo has a separate dedicated cable, which requires no external wiring and is easy to install.
2） V5 communicates with the inverter RS485 for speed control, no analog output is required, saving analog output module; communicating with HMIRS422 to realize data interaction between HMI and controller;
3） The dual serial port HMI is used, and the other serial port communicates with the temperature control module RS485, which can control the temperature in real time, high efficiency and stability.

System advantage

1. The whole machine adopts our V5 motion controller. The dual CPU hardware architecture has faster processing speed, centralized control of human-machine interface, stable performance, easy operation and maintenance, and the operation interface can be switched between Chinese and English.
2. All parameters are displayed in real time by the man-machine interface, and the bag making speed, bag length, temperature, counting, etc. can be preset.
3. The temperature is adjusted by PID, adjustable from 0 to 300 °C, no contact automatic control, and the man-machine interface is set centrally.
4. Pneumatic multi-function automatic punching, automatic removal of edge material removal, with static elimination device.

Summary

The three-side sealing bag machine system of VEICHI has the advantages of high efficiency, good stability and strong anti-interference ability. It adopts a full set of our products to provide a total solution for the three-side sealing system, with simple operation, few adjustment parameters and easy maintenance. The system can meet customers' requirements for bag making of different materials and different specifications, which can effectively improve production efficiency, increase production capacity and ensure the overall performance of the system is stable, and meet the customers' comprehensive requirements for bag making systems.

VEICHI reminds you warmly:

Tens of thousands of products, reliable first！

The test did not serious, the customer will cry!

R&D Center - Pilot Center

Hi, I am very glad to meet you, listen to my family and say that before I officially meet with you, I need to go through a long process of transformation.

At the beginning of the birth, "I" came to the veneer test laboratory. The pilot engineers conducted rigorous tests on various components and circuits in my body, they use a variety of sophisticated electronic equipment for signal simulation, acquisition, debugging, and testing. For example, an oscilloscope with a scan rate of 500 MHz, a function generator, an electronic load meter, and so on. How do you change it? Please follow me to understand.

Firstly, we need a comprehensive medical examination

I should accept the clearance test, pressure test, and according to national standards or even higher than the national standard test to ensure product safety.

Comprehensive medical examinationm

Thanks to the "long" standard, "endurance" is full, or else the first level may not pass, it seems that this baptism is still very challenging.

The next level is to check my internal "neural system", body immunity, whether it is easy to "fever" and so on.

The nervous system –It is necessary to perform single-board hardware circuit test to detect circuit logic accuracy, signal response time, load capacity and other aspects.

Perform single-board hardware circuit test

Immunity – It is necessary to perform temperature rise test

Temperature rise test link 1: software thermal simulation through design

Temperature rise test link 1

Temperature rise test link 2: The actual load test, and through infrared thermal imaging scan, it can help analyze the fever.

Temperature rise test link 2

Temperature rise test link 3: more precise test of glue points

Temperature rise test link 3

This check is really comprehensive enough. Fortunately, my reaction ability is fast and accurate. I am more immune and less likely to have a fever, otherwise I may fail.

The next step will be the top priority of this hardsoft test baptism, and it is also the key to whether the "Pinpin" can pass the hard test baptism.

Can the overvoltage, overcurrent, and lack of equal protection functions effectively protect the user equipment or the machine itself? Can it work reliably under bad conditions? How effective is the work? All of them need to be verified one by one. Some of the test items are as follows:

Short circuit test

Vibration test

Dust test

High and low temperature test, start the machine test at minus 40 ° C, 50 ° C high temperature test.

High and low temperature test

High temperature aging

Salt spray test

Drop test

EMC test (lightning surge immunity, group pulse interference immunity test)

EMC test

EMC test (static immunity test)

After hard-testing the "devil"-like baptism, the "frequently frequent" changes have become more mature and stable, and in the future, in the face of various working conditions, we can be calm and calm.

But this is not enough to meet the requirements of my family. They will further test my "mental quality". What kind of test will it be?

Software test

Whether it is directly from the customer's external terminals, or the performance of the internal advanced functions, they will repeat the experiment one by one, even if it is at the critical limit, it will give me better control.

Software test

The high-speed towed unit simulates the load change, the power analyzer monitors the harmonics in real time, the power loss, and the torque and speed measuring instrument timely collects the current actual motor speed and torque.

Among them, because the performance of the over modulation function is not ideal, they will simulate the application scenario and combine the waveforms to carry out multiple rounds of repeated optimization tests to investigate the root cause of the problem until it is finally solved:

Optimization tests

Accurate signal logic combination control is the best representation of the perfect combination of software and hardware: from signal identification, acquisition, processing, and operation to accurate tracking of speed tracking under low, medium and high frequency coverage.

Accurate signal logic combination control

In addition, for their own “defense system”, pilot engineers are also striving for excellence. They simulate various field application conditions and take into account the possibility of diversifying combinations of environmental factors, load conditions and operation operations. It has built a set of solid armor to deal with external conditions, and has more than 160 protection mechanisms, such as overvoltage, overcurrent, overload, over temperature, short circuit, phase loss protection, anti-interference, etc. Some of these protection functions have a response speed of “us”.

Some of these protection functions have a response speed of “us”

Overcurrent protection response six “us”

Overvoltage suppression effect

In order to adapt to the development of intelligent trend, the communication bus is naturally equipped: RS485 communication, canopen, profibus-DP, M2, EtherCAT bus, etc. Engineers perform logical analysis tests on each frame of data during bus transmission. Multiple communication success rates, extreme transmission distances, and anti-interference tests are all important concerns.

Overvoltage suppression

CAN bus analysis test

Multiple communication test

Through software testing, my competitiveness has been further improved, the function is more complete, the performance is more precise, powerful, and the protection is more comprehensive and reliable. In the end, they created a different me.

"Pinpin" looks forward to meeting you

“The road ahead is long and has no ending; yet high and low I will search with my will unbending.” We firmly believe that it will become a first-class enterprise in the field of electric drive and industrial control.