The temperature control is completed by the CTSC-200 series 8-channel thermocouple module CTSC 231-7TF32. The integrated controller with intelligent PID algorithm can set the parameters of the 231-7TF32 module to heat the controlled temperature zone. Cool down and feed back real-time temperature to the CPU. Hollow Blow Molding Machine First, the process introduction and control principle 1. Its process: 1) Extrusion of plastic The plastic is heated and melted and then masticated into a homogeneous mixed fluid and squeezed into the machine head at a certain pressure and flow rate. 2) Formation of parison The fluid in the handpiece is extruded through the die die under the action of gravity and extrusion pressure to form the desired parison. 3) Inflation of the parison The parison having the required length is placed in a blow mold, the parison is cut by the cutting edge on the mold, and a gas-blowing parison of a certain pressure is input through the air inlet on the mold to make the inner surface of the product and the mold Close contact. 4) Cooling of the product Maintain the air pressure in the mold cavity and wait for the product to cool and set. 5) Product release In the blow molding process, the formation and inflation of the parison is the core of the blow molding process, and controlling the wall thickness of the preform is very important for improving product quality and reducing cost. 2, the principle of blow molding The disadvantage of extrusion blow molding is that the uniformity of wall thickness of the extrusion blow molded product is not easy to control, especially for large-sized and complex products, due to the influence of the self-weight of the parison, the thinning and necking phenomenon occurs on the parison. In addition, when blowing a bottle with uneven appearance, to ensure the quality of the bottle, the parison should be made with the thickest thickness required. Therefore, in the hollow blow molding process, the control of the wall thickness of the parison is one of the key technologies related to the quality of the product. By controlling the variation law of the thickness of the preform, the wall thickness of the hollow product is uniform and the material is saved. Second, PLC control program (1) The controller adopts CTSC-200 PLC for motion control and 50-point parison wall thickness control. (2) The temperature is measured using an industrial armored thermocouple. The temperature control is completed by the CTSC-200 series 8-channel thermocouple module CTSC 231-7TF32. The integrated controller with intelligent PID algorithm can set the parameters of the 231-7TF32 module to heat the controlled temperature zone or Cool down and feed back real-time temperature to the CPU. (3) Wall thickness control The 231-7HC32 high-speed input module collects the electronic scale feedback signal of the parison length and the core gap, and then realizes the actuator servo drive valve through the 4-channel analog output module 232-0HF32. (4) The operation panel adopts the touch screen to complete the setting, modification and screen display of various process parameters such as parison temperature, extrusion pressure, parison wall thickness and cooling time of the whole machine. It is controlled by menu program and is easy and reliable to operate. . Temperature control consists of thermocouples, electric heating and electric fans. The PID operation is completed by the module, with analog and digital outputs, single bidirectional control mode selection, and the control accuracy reaches ±1 °C. The wall thickness control consists of an electro-hydraulic servo valve, an actuator, and an electronic scale for position feedback. The wall thickness parison is set in a digital manner, and the 50-point parison wall thickness control is set by the operation panel. The ordinate of the parison wall thickness curve shows the wall thickness, and the abscissa shows the number of points. Third, the main interface ã€System Features】 1, 16-bit precision, high-speed analog acquisition module CTS7 231-7HC32, fully capable of electronic scale signal acquisition 2, higher cost performance, the use of small machine investment to achieve the control effect of the medium machine, greatly reducing the system cost 3, the temperature acquisition module uses isolation technology, anti-interference ability is stronger 4. The temperature module integrates intelligent temperature control algorithm to make programming easier and temperature control accuracy higher. Fourth, summary At present, large-scale blow molding machine users generally use competitive bidding to purchase equipment, so equipment suppliers are faced with high performance and low price requirements. The most important aspect of "high performance" is the wall thickness control, but increasing the wall thickness controller will greatly increase the cost. The CO-TRUST PLC can realize the complete machine control (including the wall thickness control function) of the blow molding machine. Its stable and reliable performance, low price and well-developed and perfect solutions are trusted by customers. Stator and rotor laminations are an important part of motors and generators. The stator and rotor laminations are made of electrical steel by cutting and stamping. Usually the laminations are circular, and for those large motors or generators, the laminations are fan-shaped. Usually the thickness of the stator and rotor laminations is 0.2mm, 0.35mm, 0.5mm, 0.65mm, but depending on the application, there are thinner or thicker laminations. We are able to produce motors of various sizes from 100mm to 1250mm outer diameter. For larger motors or generators, we can also produce stator segment laminations. Customizable Stator laminations,Customizable Rotor laminations,Segmented Stator laminations,Premanent Magent Rotor Lamination Henan Yongrong Power Technology Co., Ltd , https://www.hnyongrongglobal.com
