How to treat Welding Mark of Injection Molding
The most influential factor for welding intensity is the temperature during the confluence of melt. In actual engineering practice, commonly-used methods for treating welding mark include: […]
Welding Mark of Injection Molding
The thread mark formed at the front confluence of two or more melt flows in the cavity is called welding mark or welding line. Usually, apart from low mechanical intensity, such defect as depression and aberration may also occur at places where welding mark appears. […]
Injection molding Solutions for insufficient filling
1 Use plastics with low viscosity and sound fluidity or adjust prescription of plastics and reduce viscosity of melt; 2 Improve barrel temperature, increase injection pressure, raise melt temperature to reduce erection degree, and improve plastication quality; 3 Improve mold temperature and uniformity thereof, raise nozzle temperature and properly set cold-slug well ; 4 Increase [...]
Injection molding problem– Cannot Be Sufficiently Filled
The plastic melt condenses and solidifies before it can smoothly fill in the cavity part far away from the gate or that with thin section, the cavity therefore is insufficiently filled and the shape and structure of the molded products are incomplete, which is intrinsically due to the low fluidity and poor filling capacity of [...]
An important design rule for all plates over 50kg mass
As a rule, all plates over 50 kg mass must have lifting holes. If possible, lifting holes should be located so that they are not covered by other components and can be used for lifting even after the plate is partly or completely assembled. […]
Why we place lifting holes on the face of a mold plate
There are basically two reasons for placing lifting holes on the face of a plate: […]
How to design all the lifting locations in a mold
The location of these holes can only be determined at the completion of the mold design, after the location for all necessary heating and cooling channels and mounting holes and the shape of the mold part are finalized. It is usually best to provide the handling holes as close as possible above the center of [...]
Every mold designer should consider mold lifting safe issue when designing
During the design phase, the designer must try to foresee how a mold or mold part will be handled or mishandled. Where the handler, for example, the machinist, assembler, or molding technician, may cause injury to himself or the others. The designer must consider in all case show size, location, and number of tapped holes [...]
Mold lifting safety issue
I think safety must be a primary consideration of the mold designer, how can a mold, or any heavy mold part, handled safely? No person should repeatedly lift parts heavier than 20kg or any part which is awkward to handle, regardless of weight, without some mechanical assistance, such as a hoist. Not only should nobody [...]
How to avoid getting hurt when handling a mold or mold part
There are four situations during which part or all of the molds is handled […]