First, the purpose:
The equipment can maintain the best performance state and prolong the service life to ensure the normal production.
two. Scope of application:
Suitable for repair and maintenance of molds.
three. Regular inspection and maintenance:
It is necessary to carry out regular maintenance and inspection by mold repair, upper and lower mold personnel.
1. Daily routine inspection and maintenance:
1.1 Is the running mold in a normal state?
a. Whether there is low voltage mode locking protection;
b. Is the active part such as the guide post, the ejector pin, and the row position worn, and is the lubrication good? It is required to add oil at least 12 hours, and the special structure should increase the number of refueling.
c. Whether the screws and the clamping clip of the fixed template of the mold are loose;
1.2 normal production conditions: check whether the defects of the product are related to the mold;
1.3 When the machine is off, the mold should be thoroughly inspected and rust-proofed: Dry the cavity, core, ejection mechanism and row position and spray the mold rust inhibitor or butter.
1.4 After the machine is placed, the mold should be placed at the designated location and recorded: (1) Mold condition: intact or to be repaired. (2) Anti-rust treatment method when the mold is lowered.
2. Quarterly routine inspections:
Mainly for the cleaning and maintenance of molds that have not been used for more than two months.
2.1 Open the mold and check the internal anti-rust effect. If there is any abnormality, it must be re-rust-proofed. The mold that has not been used for a long time must be buttered.
2.2 Put it back in place and make a note.
four. Maintenance notes:
1. Non-professional maintenance personnel or without the permission of professional maintenance personnel, can not be demolished and repaired by themselves.
2. Small failures occur in the production process, and the adjustment personnel can solve the problem according to the situation. Such as: 2.1 into the glue stick mold: the copper needle is used to knock out at the feed nozzle, and it is not possible to hit the mold with a hard object such as a steel needle. 2.2 The cavity has a slight mold mark, and the polishing material can be selected according to the smoothness of the cavity. The polishing material such as sandpaper can not be used for the grain surface, and it is generally brushed with a copper brush, diamond paste or diamond mortar, which is completed by professional maintenance personnel. 2.3 Product sticking: Generally, the product is covered with hot plastic and the ejector part is to be ejected after cooling. If you use fire, be careful not to damage the mold surface.
3. When the professional repairs the mold, the structure cannot be changed at will, and the structure needs to be changed before the quality engineering department agrees.
4. Ensure the quality of the repair, select the appropriate equipment, materials, tools and methods to solve the problem, the fastest way.
Fives. Quality Records:
1. Injection molding machine and mold maintenance record sheet.
First, the purpose:
1.1 To standardize the use and maintenance of plastic injection molds, reduce mold damage and ensure the quality of production meets customer needs.
Second, the responsibility
2.1 This standard must be implemented and inspected and supervised by trained injection molding technicians 2.2. The supervisor is responsible for regular supervision.
Third, the maintenance content of the injection mold is divided into:
1.0 Maintenance of the mold before production
1.1 The oil on the surface of the mold must be cleaned and the rust cleaned. Check the cooling water hole of the mold for foreign matter. Is there any water?
1.2 It is necessary to check whether the arc in the mold rubber sleeve is damaged, whether there is residual foreign matter, whether the moving parts are abnormal, and whether the movement is smooth.
2.0 maintenance of molds
2.1 Check all guiding guide columns of the mold every day, whether the guide sleeve is damaged, including the mold guide column, row position and other components, regularly refueling and maintenance, and maintenance twice a day.
2.2 Clean the foreign body glue wire, foreign matter, oil, etc. of the mold parting surface and the exhaust groove and check whether the thimble of the mold is abnormal and regularly oil. The mold surface and the flow surface are cleaned twice a day. Guide the tip, bushing, and position to determine the tip of the oil once a day.
2.3 Regularly check that the water path of the mold is unblocked and tighten all the fastening screws.
2.4 Check if the limit switch of the mold is abnormal, and the oblique pin. The inclined top is abnormal.
3. Maintenance of the stop mold
3.1 Before shutting down, the cooling water circuit must be closed, the residual water in the water path in the mold should be blown off, and the residual rubber wire on the surface of the mold should be inspected. The foreign matter should be cleaned and evenly sprayed with anti-rust agent to accurately fill in the relevant records.
4. Maintenance and management points of plastic molds
The focus of mold maintenance management, the main maintenance items are:
1. The surface of the mold PL, the cavity, the core surface, etc.
2. Lubrication of the moving parts of the mold, loosening of the bolts,
3. Anti-rust of the cooling water hole, disconnection check of the electric device, etc.
In-production maintenance should be carried out on a regular basis in continuous production, and intermittent products must be shut down and maintained in an optimal maintenance state after a batch production.
Mold maintenance should be carried out in daily maintenance and regular maintenance. All are in accordance with the "Mold Maintenance and Maintenance" and confirmed by the "Mold Maintenance Checklist", and then each mold production is recorded on the record sheet. This record is The history of the mold is of great help in future inspections. The main point of maintenance is to carefully perform maintenance and management of the mold at a fixed frequency and time. "It is not necessary to repair immediately after an accident, but to prevent accidents."
Injection mold management
The test mode refers to the test stamping or embryo molding performed after the initial installation of the mold to evaluate the performance of the mold and the quality of the blank. How to control and manage different test application, develop a corresponding test plan, and arrange a test plan by injection molding.
Trial mode notification: Trial mode notification is to remind each participating model department and personnel to do the corresponding preparation work so as to be able to arrange the trial mode work reasonably, including notification to participate in the test mode department, mold number, plastic part number, test date, Test mold materials, test pattern number, test mold type, test mold cost, test mold status, mold data and other information.
Molding/modification management: The system provides management of machining tasks such as mold making and mold change. According to the processing tasks to be scheduled, the mold shop can optimize the production schedule and plan the cost and working hours of the processing. , personnel and equipment to ensure that the processing tasks can be completed smoothly.
Test mode report: After the test mode is completed, the quality inspection department is required to issue a test mode report, which reflects various situations that occur during the test mode, including mold injection and plastic parts defects, and indicates the test die number, mold number, Detailed information such as the name of the plastic part, the reason for the test, the number of test times, the date of the test, the batch number of the plastic part, and the test machine.
Die mold pass rate: The test die pass rate reflects the number of die test and the success rate of die test, which is an important technical indicator for measuring mold master and design department.
Mold acceptance management: After the mold is successfully tested, the customer needs to confirm the test result and sign the mold acceptance form. The mold acceptance report signed by the customer shall be evaluated from the following aspects: the quality of the plastic parts, the performance of the mold, the technical documents (model), and the delivery date. Mold basic file: identify the name of the mold, the number of cavities, the total assembly drawing, the product drawing and related requirements and technical descriptions (test or original sample, material and shrinkage, assembly requirements, volume); mold status (normal, under repair) , fault, damage, scrapped).
Mold test record: The mold test record mainly records the mold test date, test model personnel, test mold location, test equipment, test mold materials, test mode status description, test sample, quality inspection report.
Mold acceptance record: The mold acceptance record mainly records the conditions during the acceptance process of the mold, including the acceptance personnel, the acceptance date, the acceptance location, the acceptance sample, the test model report, the mold status and the quality of the acceptance technology.
Mold into the factory (inbound) record: the mold inbound record records the mold into the factory (inbound), mainly including the date of entry, supplier name, address, zip code, contact number and responsible person.
Mold matching machine: The matching machine of the mold records the matching model of the machine, including its specification, name, performance, ejection mode, installation area, maximum molding pressure, clamping force, injection volume and so on.
Mold maintenance record: The mold maintenance record mainly records the number, name, date, personnel status, test mode record and precautions of the maintenance mold.
