Precautions Before Trial Of Plastic Injection Molding

Jul 20, 2022

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1. Understand the relevant information of the mold:

It is best to obtain the design drawing of the mold, analyze it in detail, and invite a mold technician to participate in the mold trial work.

 

2. Check the mechanical coordination on the workbench first:

Pay attention to whether there are scratches, missing parts and looseness, whether the sliding movement of the mold is correct, whether there is leakage of the water channel and air pipe joints, and if the opening of the mold is limited, it should also be marked on the mold.

 

3. When it is determined that each part of the mold moves properly, it is necessary to select a suitable trial mold injection machine, and attention should be paid to the selection.

(a) Injection capacity

(b) Width of guide rod

(c) Maximum departure

(d) Accessories

Is it complete and so on. After everything is confirmed that there is no problem, the next step is to hang the mold. When hanging, you should pay attention to locking all the clamping templates and not removing them before opening the mold, so as to prevent the clamping template from loosening or breaking and causing the mold to fall.

 

4. Increase the mold temperature:

According to the performance of the raw materials used in the finished product and the size of the mold, select an appropriate mold temperature controller to increase the temperature of the mold to the temperature required for production.

 

5. If the experiment plan rule is not implemented in the factory, we suggest that only one condition can be adjusted at a time when adjusting the test conditions, so as to distinguish the influence of a single condition change on the finished product.

 

6. According to the different raw materials, moderately bake the original loaf used.

 

7. Try to use the same raw materials as possible for future mass production.

 

8. Do not test the mold completely with inferior materials. If there is a color requirement, you can arrange a color test together.

 

9. Problems such as internal stress often affect the secondary processing. After the mold is tested and the finished product is stable, the secondary processing should be added. After the mold is closed at a slow speed, the mold closing pressure should be adjusted, and the action should be performed several times to check whether there is a fit. Unequal mold pressure to avoid burrs and mold deformation in the finished product.

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