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Shenzhen WT Hardware and Plastics Limited

contact:Henry yang

Mobile: +86-8923768676

Tel: +86-755-27673590, 23143539
Fax: +86-755-23143536
Add: 5B2, Jiangshi Building, Fuyong, Shenzhen, China
Our main products: Injection Mold, Molding Parts, Die Casting Mold, CNC machining of high quality


The maintenance steps of injection mold in plastic mold are introduced in detail.
Apr 27, 2018

The maintenance steps of injection mold in plastic mold are introduced in detail.

First of all, we should understand the basic conditions of plastic moulds. For example, first of all, each die should be equipped with a resume card, detailed records and statistics of its use, nursing (lubrication, cleaning, rust proof) and damage. According to this, which parts, components have been damaged and the extent of wear and tear to provide information for the occurrence and solution of the problem, and the molding of the mold. Process parameters and materials used to shorten the trial run time and improve production efficiency.

In the condition of normal operation of the injection molding machine and mould, the processing enterprise should test the various properties of the mold and measure the size of the final molded parts. Through these information, the existing state of the mold can be determined and the damage of the mold cavity, core, cooling system and the type surface can be found. The mould can be judged according to the information provided by the plastic parts. Damage state and maintenance measures.

The key parts of the mold must be tracked and tested. The function of the ejecting and guiding parts is to ensure that the mold opens and the plastic parts are ejecting. If any part of the mold is stuck because of the damage, it will cause the stop production. Therefore, it is necessary to keep the lubrication of the mold top needle and guide column (to choose the most suitable lubricant) and to check the thimble and guide regularly. When the deformation and surface damage occur, change in time. After a production cycle is completed, the professional antirust oil should be coated on the working surface, motion and guiding parts of the mold. The protection of the elastic strength of the gear, the bearing parts of the rack and the spring die should be emphasized so as to ensure that it is always in the best work. With the continuous production time, the cooling channel is easy to deposit with water scale, rust, silt and algae, which makes the cooling channel section smaller and the cooling channel narrowed, greatly reducing the heat exchange rate between the cooling fluid and the mold, and increasing the production cost of the enterprise. Therefore, the cleaning of the flow passage should be paid attention to, heating and controlling for the hot runner mold. The maintenance of the system is conducive to preventing production failures, so it is particularly important. Therefore, each period of production should be measured by the ohm table with the belt heater, rod heater, heating probe and thermocouple on the mold. If there is damage, it should be replaced in time, and compare with the mold resume and make a good record, so as to find the questions in time and take measures to deal with it.

Then the last link is to do the mold surface maintenance, the so-called surface is to prevent corrosion, therefore, the selection of a suitable, high-quality, professional antirust oil is particularly important. When the mold completes the production task, the residual injection molding should be carefully removed according to different injection molding. Copper rods, copper wire and professional mold cleaning agent can be used to remove the residual injection and other sediments in the mold and then dry. Disable iron wire, steel bar and other hard objects to clean up, so as not to scratch the surface. In the case of rust spots caused by corrosive injection, the grinding machine should be grinded and polished with a professional antirust oil, and then the mold is stored in a dry, cool, and dust-free place.

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