New energy battery plastic mold

New energy battery plastic moldPlastic molds and injection molds are both molds, and there are similarities and differences. Plastic mold is an abbreviation of combined plastic mold used for compres

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  • 型号: New energy battery plastic mold

New energy battery plastic mold


New energy battery plastic mold


Plastic molds and injection molds are both molds, and there are similarities and differences.




   Plastic mold is an abbreviation of combined plastic mold used for compression molding, extrusion molding, injection, blow molding and low foam molding. It mainly includes a concave mold with a variable cavity composed of a female mold combined substrate, a female mold component and a female mold combined card board, and a convex mold combined substrate, a convex mold component, a male mold combined card board, a cavity cutoff component and A punch with a variable core composed of side-cut composite plates. Coordinated changes of mold convex, concave mold and auxiliary molding system. Series of plastic parts of different shapes and sizes can be processed.




Plastic mold




   Injection molds are one of the types of plastic molds. Plastic molds include: injection molds, extrusion molds, and blister molds. Like the injection mold produced, the method of injecting plastic material is used, the mold is opened and the product is formed. An injection mold can also be understood as a mold with an empty center and a fixed hole on the body. Plastic material is injected into the hole through the hole, and the mold is heated, formed, and opened at a high temperature to obtain the product.




   There are five major systems for plastic molds: pouring system, temperature control system, molding parts system, exhaust system, guide system and ejection system. Among them, the pouring system and molded parts are the parts that are in direct contact with the plastic and change with the plastic and the product. They are the most complex and the most variable parts in the plastic mold, requiring the highest processing finish and precision.








Mold technology: Silicone rubber mold making method and matters needing attention




Rubber mold is one of the simplest methods in rapid molds. Generally, the RP prototype is re-molded with silica gel, but the lifespan is very short, only about 10-30 pieces! It has good elasticity and replication performance. The use of silicone rubber to replicate the mold does not need to consider the draft angle, does not affect the dimensional accuracy, and has good partitionability. It can be directly poured as a whole without dividing the upper and lower molds. Then cut along the predetermined parting line to take out the master mold!


 


Room temperature vulcanized silicone rubber is divided into two types: addition type and condensation type:


 


The raw materials and formula use special mold silicone rubber. This product is sold in double packaging. The A component is a rubber compound and the B component is a catalyst. The room temperature, the strength and the hardness of the mold should be considered during the preparation to determine the weight preparation ratio of the AB component.


 


When the room temperature is 20-25 degrees, A:B=100:1.5. When the room is low (but not below 10 degrees), add 0.1-0.3 parts of B component appropriately. If the room temperature is too high, 0.1-0.3 parts of group B will be reduced. The specific method is to determine the total dosage according to the volume of the mold, and then weigh the A and B components accurately in proportion, place them in a vessel and stir evenly, and serve.


 


Mold making: pour the prepared materials onto the clean objects to be imitated. In order to save material and make a thinner mold, it can also be painted in stages. In order to increase the tensile force of the mold, gauze or the like can be pasted. It can be cured into an elastomer in 2 hours at room temperature of 20 degrees, and it can be used in one day.


 


Precautions for making silicone rubber molds:


 


1. Component B is a catalyst, which is easy to be hydrolyzed by moisture, so the lid should be tightly closed after use.


 


2. Once the A and B groups are mixed, the chemical reaction starts immediately, and the viscosity gradually rises and cannot be stopped. To avoid waste, it should be prepared according to the dosage and used immediately after preparation, without delay.


 


3. The mixing ratio of group A and group B is related to the speed of chemical reaction and the performance of the mold. The more component B, the faster the reaction, and the higher the strength and hardness of the product, but the toughness decreases. Therefore, the weighing requires precision.


 


4. Before preparation, stir the A component material up and down evenly, and then weigh it.


 


5. The pouring method is suitable for embossing, and the brushing method is suitable for the production of three-dimensional molds. Molds for pouring reliefs should first be made of a frame whose length and width are 4-6CM larger than the original length and width. The border should be flat and the inner surface should be smooth. When pouring, place the frame on a clean glass plate, and then put the original in the frame, leaving a gap of 2-3CM on each side


 


There are bubble solutions during the production process:


 


Improve flash slot and exhaust system design


Increase the pressure of the press


Reduce the amount of release agent and spray evenly


Material control moisture


You can try adding some defoamer


Use cold runner


Use a vacuum machine to vacuum, and an exhaust groove can be added to the mold.


新能源电池塑胶模具


新能源电池塑胶模具