the difference between Hot Runner and Cold Runner

Molds with hot runner or valve gate systems will simplify end-of-arm-tooling (EOAT) design and reduce cost by eliminating runner grippers or vacuum cups and allow for faster part removal. If a mold must have a cold runner,

try to sub-gate the parts from the runner and have round pads for vacuum removal, this will eliminate the need for a post mold degating device and save cycle time for other operations. Vacuum runner removal is faster, lighter and less expensive when compared to pneumatic grippers.

  When the mold cannot have sub-gated parts a degating station will be needed. A degating station can be as simple as a pneumatic nipper mounted on the robot traverse beam to a sophisticated floor-mounted station with guillotine style shears to cut long fan gates. A simple degating station with two to four nippers can cost as little as $5,000 to $7,000.
Try to keep the gates accessible when designing for scissor-like cutters. Do not have curls in the runner or have runner branches close to the part obstructing the nipper blades.          



About First-rate Mold Solution Co., Ltd.
First-rate Mold Solution Co., Ltd. in China, provide industry design,mold design,mold manufacturing,molding analysis,project management service.

our website has a lot of professional knowledges in mold industry in blog and news, also we are interested in CAD/CAM/CAE, such as AUTOCAD,UGNX, PRO/E,CATIA, CIMATRON, SOLIDWORKS, MOLDFLOW and so on,we welcome professional engineer,mold maker and someone who are interested in injection molding,plastic product,injection mold and mold industry to our section of blog and news,we would like to share with them