At present, in addition to manual edge trimming, there are several automatic edge trimming methods in the industry for molded rubber products:
One of the biggest problems is the lack of versatility in punching and cutting burrs. Each set of mold products requires a pair of punching knives, which are high in cost and long in delivery time, making them suitable for long-term production and large order products.
The second is the freezing method, which is based on the principle that rubber becomes hard and brittle at low temperatures, and the degree of brittleness varies depending on the thickness. That is to say, under the same low-temperature conditions, the thin part becomes brittle before the thick part. So, using the brittle gradient caused by the thickness difference between the overflow edge and the body to complete the trimming, that is, grasping the time difference between the overflow edge being brittle and the body not being brittle, and applying external forces such as friction, impact, and vibration to the repaired product to remove the overflow edge.
The third is the centrifugal edge trimming machine, which cleverly utilizes the principles of aerodynamics to achieve automatic edge removal. Due to the fact that the finished vulcanizate has not undergone the vitrification process of freezing, the process of tearing and separating burrs is similar to manual operations, starting from weak gaps and gradually expanding the cracks, thus achieving the goal of separating burrs.
The introduction of small internal mixers in rubber machinery can be found on this website to identify key points.
Dongguan Zhenggong Electromechanical Equipment Technology Co., Ltd. was founded in 1988 in Dongguan, Guangdong. Its main products Small open mill, Small internal mixer, Small tablet press, small vulcanization machine, Small extruder, and various customized laboratory mixer rubber and plastic mechanical equipment. Established the Taiwan Joint Venture Business License in 2009, after more than 30 years of research and development and creation. It has been located in Houjie Town, Dongguan City, Chinese Mainland Province, mainland China.