How to maintain simple and effective plastic molds


First of all, each plastic furniture product mold shoul […]

First of all, each plastic furniture product mold should be equipped with a resume card to record and count its use, care (lubrication, cleaning, rust prevention) and damage. Based on this, we can find out which parts have been damaged, the degree of wear and tear, provide information for finding and solving problems, as well as the molding process parameters of plastic furniture product molds and the materials used in the products. In order to shorten the trial operation time of the mold and improve production efficiency.

Plastic drawer mould

Secondly, under the normal operation of the injection molding machine and the mold, the processing enterprise should check the performance of the plastic furniture product mold and measure the size of the final molded part. Through this information, you can determine the current state of the plastic furniture product mold, and find out the damage of the cavity, core, cooling system and parting surface. According to the information provided by the mold, the size of the final molded part can be measured. Can determine the damage of the mold and maintenance measures. It is important to track and inspect several important parts of plastic furniture product molds: the ejection and guide parts are used to ensure the opening and closing movement of the mold and the ejection of plastic parts. If any part of the mold is clogged due to damage, it will cause downtime.


Therefore, the lubrication of the mold jack and guide post should be regularly maintained (the most suitable lubricant should be selected), and the jack should be regularly checked. Whether the guide column is deformed and surface damaged, it should be replaced immediately after discovery; after a production cycle, professional anti-rust oil should be coated on the working surface, moving part and guide part of the plastic furniture product mold, especially the elasticity of B Strength protection. Earring parts with gears and racks and spring molds to ensure the start of the production cycle. As the continuous production time is extended, the cooling channel is prone to deposit scale, rust, sediment and algae, which makes the cooling channel cross-section smaller and the cooling channel narrower, which greatly reduces the heat exchange rate between the coolant and the mold and improves production cost. For enterprises, attention should be paid to the cleaning of cooling channels. As far as plastic furniture product molds are concerned, the maintenance of the heating control system helps prevent production failures, so it is particularly important. Therefore, at the end of each production cycle, an ohmmeter should be used to measure the belt heater, rod heater, heating probe and thermocouple on the mold. If there is damage, it should be replaced in time, and compared with the mold resume, and make a record so that the problem can be found in time and corresponding measures can be taken.


Pay attention to the surface maintenance of plastic furniture product molds again, which directly affects the surface quality of products. The key is to prevent rust. Therefore, it is particularly important to choose appropriate, high-quality and professional anti-rust oil. After the molds for plastic furniture products are completed, different injection methods and different methods should be used to carefully remove residual injection parts. Copper rods, metal wires and professional mold cleaners can be used to remove residual injection and other deposits in plastic furniture product molds, and then air-dried. It is strictly forbidden to clean hard objects such as iron wire and steel bar to avoid scratching the surface. If there are rust spots caused by corrosive injection molding and grinding and polishing with a grinder, professional anti-rust oil should be sprayed, and then the plastic furniture product molds should be stored in a dry, cool and dust-free place.