Injection mold maintenance and management

2.1 This standard must be trained and qualified technical personnel and injection mold management implementation.

2.2 Injection foreman responsible for the implementation and inspection and supervision, in charge of regular monitoring.

Third, the injection mold maintenance is divided into: pre-production mold maintenance; production in the mold maintenance; stop mold maintenance; quarterly routine inspections; mold storage.

3.1 Pre-production mold maintenance

3.1.1 must mold the surface of the oil, clean the rust, mold cooling water check hole if a foreign body, water is smooth.

3.1.2 mold plastic muzzle must be checked in the arc is damage, whether there is residual foreign body.

3.1.3 fixed mold clamping screws and template folders are tight and so on.

3.1.4 installed on the injection mold machine, to conduct air-mode operation. Observe the various parts of the running movement is flexible, if not normal, active parts such as guide pin, ejector, the line bit of wear, lubrication is good, the top stroke, open itinerary is in place, the mold surface is consistent hours rigor.

3.2 Maintenance of the production mold

3.2.1 mold used to maintain normal temperature, not hot and cold. In normal temperatures, extended tool life.

3.2.2 Check the mold for all day-oriented guide post, guide sleeve, back to the pin, putting, slider, and whether the core damage, to be observed at any time, regular inspection, timely cleaning and maintenance to periodically refuel, maintenance twice a day to work to ensure that these pieces of exercise slide flexible to prevent tight astringent bite.

3.2.3 Each clamping before, should note that the cavity is clean, absolutely not allowed to leave residual products, or any other foreign body, clean-up are forbidden to use hard tools to prevent bumps cavity surface.

3.2.4 There are special requirements cavity mold surface, the surface roughness is very small molds, be sure to pay attention to not cleaning up mold scratch. In particular, face the mirror mold, cleaning mold repair personnel must clean up.

3.2.5 Clean the mold parting surface and exhaust ducts of the foreign body, plastic wire, oil and material. Injection mold in the molding process tends to break down the corrosion of low molecular weight compounds, mold cavity, making light of the cavity surface gradually lost its luster and reduce product quality, so the need for regular scrub, scrub formulations using alcohols or ketones, promptly after the dry scrub.

3.2.6 regularly check whether the flow of water molds, and all fastening screws for fastening.

3.2.7 Check whether the abnormal limit switch mold, oblique pins. Slant is abnormal.

3.2.8 When the mold is in the open state, prohibit the use of radio static mode on the top seat, so as not to fall off the static mode.

3.3 mold maintenance downtime

3.3.1 Operation is subject to the temporary shutdown should be on the mold is closed, to prevent cavity and core exposed, to prevent accidental damage, downtime is expected to exceed 24 hours in the cavity, sprayed on the core surface, anti-rust oil or release agent, especially in humid areas and during the rainy season, a short time and then have to do anti-rust treatment. Water vapor in the air will reduce the quality of the cavity surface, the product surface quality. Die again, should the oil to remove the mold, clean it before use, there are mirror and then asked to use compressed air with hot air drying, or leaving in molding products leaking defects.

3.3.2 temporary shutdown after the boot, open the mold after the limit should check whether the slider is moved, is not unusual to mold. In short, the pre-boot must be careful, not careless.

3.3.3 To extend the life of the cooling water in the mold out, you should immediately use compressed air to the cooling water within the water clear, with a small amount of oil into the mouth of the mouth, then blow compressed air, so that all have a cooling pipe layer of rust oil.

3.3.4 work carefully check the working status of the control unit to prevent abnormal auxiliary systems, heating control system maintenance is especially important for hot runner molds. At the end of each production cycle, hot runner should all be measured to ensure that its features intact. Pulling with the hydraulic cylinder in the oil drain as much as possible, nozzle seal to avoid leakage of hydraulic oil during storage and transportation or pollution of the surrounding environment.

3.3.5 hear the mold issue in the production of different sound or other abnormal conditions, should immediately stop checking. Mold maintenance workshop personnel to conduct normal operation of the mold inspection tours, found to have anomalies, timely treatment.

3.3.6 operator in the shift, in addition to the transfer of production, process critical for records, usage of the mold must have a detailed explanation.

3.3.7 When the mold is completed the number of products produced, under the machine to replace the other mold, the mold cavity should be coated with rust, mold will die its annex to the maintenance staff, along with the last one as the production of qualified products with the sample sent to maintenance staff. In addition, the list should be sent to the use of a mold, fill the mold in any machine, from a certain period of a day, how many total number of products produced, and now mold is good. If the mold problem, to use a single fill out the mold problem exists, to amend and improve the specific requirements, and pay an untreated sample to the custodian, mold repair work left to die when the reference.

3.3.8 should be checked after the shutdown of the surface of any remaining mold plastic wire, foreign bodies, etc. to clean up even after the spray rust inhibitor, complete and accurate records.

3.4 quarterly routine checks:

Mainly on the placement of more than two months to clean up the mold without the use of maintenance.

3.4.1 Open the mold and check for rust, there are unusual circumstances, be re-rust treatment. Long-term use of molds to be butter.

3.4.2 put back and make records.

3.5 mold storage

Should set up a tool library, set up by professionals, and the establishment of die file, and if possible to mold the implementation of computer management. Moisture mold library should choose a small ventilated place, the temperature should be maintained at 70%, if the humidity is over 70%, the mold is easy to rust, mold should be added to our store, pay attention to corrosion, dust and so on.