Mold Factory’s maintenance guidelines for injection mold

 Mold Factory’s maintenance guidelines for injection mold

The situation in the injection molding medical product equipment and medical mold processing industry is not optimistic after 2022

Dongye Precision Mold Factory’s maintenance guidelines for injection mold processing, plastic molds, etc



Plastic molds, primary protection for plastic molds:

The first level protection of plastic molds during injection molding refers to the usual protection of molds by operators during production, with the primary focus on cleaning, smoothing, and inspection.

A. Plastic molds, protection during mold installation:

1. Injection mold processing: Before installing the plastic mold, the upper and lower surfaces of the mold should be cleaned to ensure that the mold equipment surface and the press operation table are not compressed or damaged, and the parallelism of the upper and lower equipment surfaces of the mold during production;

2. Plastic molds. After the plastic molds are installed, open the molds and clean all parts of the molds, especially the guiding structure. Regarding the outer surface of the molds, their surfaces should be cleaned to ensure the quality of the parts;

3. Smooth and apply smooth grease to the sliding parts of plastic molds and plastic molds;

4. Plastic molds, inspection of various parts of plastic molds, especially safety parts. For example: safety side pins, safety screws, side guard plates, punching waste channels, etc.

B. Injection mold processing, plastic molds, and protection during plastic mold production:

1. During production, timely apply oil to the corresponding parts of the mold. For example, the pressing ring and rounded corners of the drawing die; The cutting edge of the trimming die; The flipping blade block is a bit too small;

2. Timely clean up the small hole waste channel of the trimming and punching die.

C. Injection mold processing, plastic molds, protection of plastic molds after production:

1. After the production is completed, all molds should be inspected;

2. Clean the mold thoroughly to ensure its cleanliness;

3. Clean up the waste materials inside the mold to ensure that there is no waste in the waste box;

4. truthfully reflect the usage and post usage status of the mold on the Mold Usage Operation Voucher.

Injection mold processing, plastic molds, secondary protection of plastic molds:

The secondary protection of molds refers to the timely protection system designed based on the technical condition and degree of disorder of the molds. This protection task is completed by the mold repair personnel and recorded according to the protection status. The following describes the requirements and methods for secondary warranty for different parts:

1. Drawing die convex and concave molds:

The main problem with the convex and concave molds of the drawing die is the burrs and dents on the mold surface. When protecting, the first step is to polish the rounded burrs on the mold. Assuming that the mold needs to be repaired by welding and then smoothed out due to the presence of pressure pits;

2. Guiding components (guide pillars, guide sleeves, and guide plates, etc.):

The mold will show signs such as pulling marks during operation. The primary reasons for this are smooth oil stains and uneven guide surfaces. When there are pulling marks on the guiding parts, the method of using an oilstone to push them forward and then polishing them is used to eliminate them;

injection mold
3. Edge trimming blade:

During the use of the mold, the blade edge is prone to chipping and depression, so it is necessary to repair and weld the damaged parts of the mold;

4. Elastic parts such as tension springs:

In the process of application, the tension spring is one of the parts that are easily damaged in injection molding, and generally shows signs of cracking and deformation. The method of selection is to replace, but during the replacement process, attention must be paid to the standard and type of the tension spring. The standard type of the tension spring is determined by three factors: color, outer diameter, and length. Only when these three factors are the same can it be replaced;

5. Punch and sleeve:

Plastic molds, some of the punches and sleeves used on plastic molds use standard parts. During the use of molds, the punches are prone to breakage, bending, and gnawing, and the sleeves are generally gnawed. The damage to the punch and punch sleeve is usually replaced with parts of the same standard. The parameters of the punch mainly include standards for operation, equipment, length, etc;

6. Tightening parts:

Check if the fastening parts are loose or damaged. The method of selection is to replace parts with the same standard;

7. Pressing and unloading parts:

Pressure parts such as pressure plates, Uni glue, etc., and unloading parts such as discharge plates, pneumatic top feeding equipment, etc. When protecting, check if each device is damaged and make modifications to the damaged ones. Check for any signs of air leakage in the pneumatic top material and select detailed methods for the condition. If the trachea is damaged, replace it.

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