Correct use of injection mold

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How to use the injection mold correctly?

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1.Opening and closing mold speed and low voltage protection adjustment

When the injection mold is opened or closed, the speed change law is “slow-fast-slow” 3 speed levels. In the process of closing the mold, in order to ensure that the template can move without crawling, the system pressure before the template advances will be minimized.

2.Adjustment of clamping force

Innormal production, according to the actual injection situation, gradually adjust from low to high, and use the low clamping force as much as possible while ensuring that the plastic products meet the quality requirements.

3.Implement institutional adjustments

The launch mechanism of plastic products has seriously affected the quality of plastic products, and it is necessary to carefully and carefully adjust the following aspects.

(1.) Push-out schedule: It is necessary to ensure that the plastic product is completely demolded; (2.) The number of start-ups: Generally, simple, low-depth plastic products can be launched once, but complex and deep-reachable plastic products Set two or even three times to push out; (3.) Push out speed: The speed of putting out is related to the plastic raw materials, the structure of plastic products and the mold temperature. If the speed is too high, it should be adjusted from low to high so as not to damage the plastic. The principle of the product. 

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4. Temperature control of the injection mold

 The temperature of the injection mold is closely related to the molding material and should be strictly controlled. On the other hand, it is necessary to observe whether the working condition of the instrument is normal from time to time, and observe whether the cooling pipe is unblocked and in good condition to ensure the temperature control accuracy. On the one hand, it is necessary to frequently calibrate the temperature.

5. Take out plastic parts

According to the size of the plastic product, there are three methods for taking out the molded parts: automatic bonding, manual taking out and mechanical hand taking out. But no matter which working method and picking method are used, the parts and the materials of the pouring system should be completely clean in each working cycle. Especially when the injection machine is fully automated, it is necessary to set the “reclaimer” to control the injection machine to enter the next working cycle. In addition, once there are parts in the injection mold, the injection molding machine performs the next mold clamping action. In most cases, the mold will be damaged, or the mold will be severely deformed and scrapped. It must be paid attention to.

6. injection mold cleaning

During the manufacturing process, plastic product flashes, fragments, and material carbides are generally retained in the injection mold cavity, and the injection mold cavity needs to be cleaned.

7. Observation of the working status of the injection mold. Observe the operating conditions of the mold: always observe whether the sequence of the injection mold is correct, whether the core, starting and stopping, positioning, clamping, etc. are accurate, reliable, whether there is serious wear, whether the ejector rod, the return stroke, whether it is stuck, broken, or not moving smoothly, etc. Phenomenon, it should be shut down immediately.

 8. Anti-rust Some materials decomposed by overheating will generate corrosive gas, which will cause the injection mold to rust, which usually occurs under molding pressure. Therefore, after stopping the mold, wipe the injection mold with a clean soft cloth and close the mold to prevent corrosion caused by gas generated by other syringes. When the mold is stopped for a long time, wipe the cavity, spray anti-rust agent, close the injection mold, apply butter, and plug the gate.

 9. Unloading and warehousing After the product is produced, the injection mold is thoroughly cleaned, and the cavity surface, important size parts, moving parts and positioning are checked accurately and meticulously. It is found that it is intact and coated with rust inhibitor. Remove the injection mold according to the reverse steps of installing the mold, and lock it with the locking plate. After finishing all kinds of accessories matched with the injection mold, put them into the injection mold and fill the injection mold.

The above is the correct use of injection molds. I wonder if you know the correct use of injection molds? If you want to find an injection mold manufacturer, you can contact us! 


Post time: Aug-10-2021