1. Measurement and conveying system with closed-loop control

The equipment system digitally monitors the glue pressure of the feeding pump and the remaining glue in the A and B raw material buckets, and introduces the function of the control system. The control process is as follows: every about 0.01 seconds (i.e. one PLC scanning cycle), the flow rate of A and B glue is compared, and the error between the two is calculated. The difference is then used for PID calculation, and the calculation results are used to adjust the various parameters of the feeding system, thereby achieving closed-loop control of the output ratio. This dynamic adjustment process ensures more accurate proportioning, and this control mode enables the proportioning accuracy of the feeding system to reach within ± 1%, providing favorable conditions for product quality assurance.

According to our testing over the past two years, the best record for A and B glue balance is an error rate of only0.07%I believe these data are exciting good news for users pursuing high-quality LSR injection molding.

Due to the design and experimentation of A and B adhesive materials being carried out in accordance with the 1:1 specification, the material properties that can be achieved are also given under the condition of a 1:1 ratio of two component materials. However, in actual use, traditional feeding systems do not truly guarantee this, resulting in the material properties of the product after molding not fully meeting the design requirements. For situations with high requirements, such as bonding, high transparency, and human implantation, quality issues may arise or the service life may be greatly shortened.

2. Fully pneumatic secondary metering system

In terms of measurement, we have developed and designed a fully pneumatic secondary metering pump based on the measurement characteristics of the civil industry feeding system, breaking the traditional way of using hydraulic systems in China. It is generally believed that the pressure of the pneumatic system is lower than that of the hydraulic system, but this needs to be calculated according to different cylinder diameters. In fact, at a pressure of 0.5MPa, the output of our designed metering system is greater than that of other domestic brands of hydraulic systems. This system has the advantages of no maintenance, cleanliness, and low energy consumption, and has been well received in the industry.

Compared with traditional feeding systems, D521 has outstanding advantages in energy saving.

This is because D521 adopts a fully pneumatic system, without the 2.2kw motor consumption of the hydraulic station, only the electrical energy consumption of the controller.

3. Digitization of equipment parameters

Many parameters of traditional feeders are not displayed. D521 digitally monitors the condition of raw materials and digitizes the changes in raw material, output pressure, and output speed.

The above important parameters can be monitored and adjusted through the touch screen. The digitization of equipment parameters makes many operations simple and easy, enabling your production process to be digitized and adjusted more accurately and conveniently.

The above are the differences between D521 and other Kawasaki feeding systems. Due to the closed-loop and digital control system used in D521, the control accuracy of this system is much higher than other models. At the same time, D521, like other Kawasaki feeders, also has the following features:

4. No glue leakage

Kawasaki has put in years of effort to deal with adhesive leakage in the feeding pump body and pipelines. Kawasaki promises to replace the entire pump body free of charge if customers discover glue leakage in Kawasaki's feeding pump.

5. High adhesive efficiency

Kawasaki's feeding pump has high dispensing efficiency. This has significant advantages for high-speed injection molding. At Hualida Company, for the fully automatic molds of high-speed automatic machines, if the feeding system is not stable enough or the glue extraction cannot keep up with the molding machine, it will cause the glue extraction to not keep up with the molding machine.
6. A and B glue balance

We have designed a suitable proportional adjustment method for our feed pump structure. D521 adopts an automatic adjustment method, with AB glue automatically balanced. It can ensure that two buckets change the glue at the same time.

This is a crucial element in reducing waste of rubber materials and ensuring product quality. The technology we have gained from the experience of developing high demand feeding systems in the power industry has been applied to the civilian industry and achieved significant results. This is also a major reason why many customers choose us.

For this issue, we can guarantee that if the A and B adhesives cannot be loaded and replaced simultaneously as promised, ensuring a balanced ratio of A and B during the feeding process, customers can choose to return the product.

7. Less waste

According to customer feedback, we always need to release a portion of the adhesive before emptying the pressure plate. This always results in waste of adhesive material, as the adhesive flowing onto the pressure plate is difficult to recycle and reuse.

Therefore, Kawasaki adopted another way of exhaust, without the need to discharge the glue, let alone onto the pressure plate. This greatly reduces the waste of adhesive material and makes the operation cleaner.


8. Improved shut-off valve

Kawasaki's feeding cut-off valve has adopted an updated and improved design.

We have adopted a more reliable shut-off valve design, which can reliably cut off even with high injection pressure during screw injection, preventing inaccurate injection and feeding.

9. Improved pneumatic nozzle

Kawasaki's pneumatic nozzle has undergone significant improvements based on years of practical experience. Not only is it small in size, but it also has a compact structure, high reliability, and minimal maintenance.

In this design, the water transport part covers the entire nozzle section, with silicone, cooling water, and compressed air all integrated into a sophisticated structure. It has the advantages of good cooling effect, reliable sealing, and strong force.

Practical application has shown that this new pneumatic nozzle can greatly improve the injection precision of injection molding machines.

Attachment: Characteristics of Kawasaki's color paste system

There are several designs for Kawasaki's color paste addition, and here we will describe the color paste addition methods used in the baby products and medical industries. This color paste addition method has been recognized by companies such as Hefeng, Lover, Kewater, Meitu, BYD, Jierui, and Ke'an for accurate addition and uniform color mixing. Kawasaki has been rated as a high-quality supplier by BYD Company due to its advantage in adding colorants.

This addition method consists of two parts. One part is pressurized by a suction pump to a constant pressure flow, which ensures that the color paste is added and measured under the same adhesive pressure under constant pressure control. This provides stable injection pressure and prevents the measurement accuracy from being affected by pressure changes during volume measurement.

In the secondary measurement of the color paste, we adopt a volumetric measurement method and can adjust the amount of color paste added freely. Through secondary metering, the repeatability accuracy of color paste addition can be well controlled, and combined with a static mixer, it can meet the needs of color paste addition under normal circumstances.

In October 2012, Jierui Company raised higher requirements for the addition of colorants, requiring light colored transparent products to run for a long time under practical conditions in the factory, without any color difference changes detected by instruments. After more than half a year of joint efforts by technical personnel from both sides, the 24-hour acceptance test was successfully conducted on June 25, 2013, presided over by senior executives of both companies.

In the experiment:Under the conditions of changes in factory air pressure, voltage, and temperature during the day and night, samples are taken every hour within 24 hours. After inspection with instruments, it is confirmed that there is no color difference change.

We promise:Kawasaki can achieve the addition precision that foreign brands can achieve. If it cannot be achieved, Kawasaki can provide a return guarantee.

At the same time, we also considered the convenience of adjustment in the design of the measuring mechanism, which includes digital indicators. This way, when customers want to achieve the original color paste addition effect, they can remember the previous value and easily restore the original addition amount, greatly reducing the debugging work.