Manipulator for injection molding machine based on Omron PLC control

1 Introduction

In the plastic PLC control Manipulator injection Omron products PLC control Manipulator injection Omron to products processing methods to different classification, main can be divided into four categories. One for injection molding products; Secondly, blow molding products. Three for extrusion molding products; Four for rolling forming products. Application which means the most extensive, most varieties, the highest precision, when the number of injection finished product class, small to ladle pot bowl of daily necessities, children's toys, big to precision industrial equipment components, along with the growing emergence of various new macromolecule material, many metal parts also have been gradually replace the trend of these new materials. Automation production requirements for plastic injection molding products, to ensure that products of high quality, high efficiency, must try to reduce the artificial intervention, based on the above thoughts, a lot of injection molding machine manufacturers auxiliary injection molding machine dedicated manipulator device on the customer to choose a range.

For the original injection machine, however, the vast majority of this device, therefore, to develop suitable for injection molding machine use dedicated auxiliary manipulator, become the promotion of the competitiveness of the manufacturers an important means and a necessary choice.

2         industry conditions

All kinds of manipulator is indispensable in the production of automation equipment. Especially in the dangerous situation, in a serious threat to people's safety and health environment, using robots instead of human, has the very vital significance.

Plastic industry is very developed in pearl river delta region, in the domestic leading position, known as the pearl river delta has the factory of the world in the world. At present, the industry use injection machine dedicated manipulator in the majority with Taiwan's production, such as the strength of strong card manipulator, Taiwan must look international co., LTD. Production of "wei" W255 series injection machine dedicated manipulator, and so on.

Analyze the structure of the manipulator, its electric control system adopts microcomputer minimum general system or single chip microcomputer system, mechanical drive part adopts pneumatic drive, frequency control of motor speed drive and servo drive. In the aspect of mechanical structure adopts sliding guide rail structure with timing belt drive, in or use the ball gear rack structure with sliding guide. Overall design ideas, is to use mature control technology and mechanical parts and collocation of institutions.

3         manipulator for injection molding machine based on PLC control

The injection molding machine dedicated manipulator, in terms of manipulator manufacturers, because it is a special auxiliary equipment and therefore price is higher, especially for equipment modification of the existing injection molding machine, economically seems to "pay". So-called high performance than the injection molding machine dedicated manipulator is all injection molding products manufacturers use original important option for the injection molding machine equipment improve product quality and maximum demand.

3.1   based on the PLC control system

PLC is a microprocessor as the core, and a combination of computer technology, automatic control technology and communication technology and developed a kind of new industrial automatic control device. It is the biggest characteristic of small volume, strong function, fast response speed, high reliability. Control process are through in the form of ladder diagram programming. At any time can depend on the different requirements of production process and random change, but also has extensibility. Now because of the PLC are controlled by the world famous electric equipment manufacturers specialized research, development and batch production, so the cheaper due to lower production costs. With the speeding up of global economic integration, the market competition in its price have cut space, further for various industries, widely used in this control system provides a favorable conditions

Man-machine interface technology and process also USES have been very familiar with 5.7 "monochrome screen, using a handheld structure, through dialogue type operation interface, full Chinese mode, easy to learn. The built-in program can follow one's inclinations collocation is used, can automatic monitoring the fault and record. Can be modified at any time three axes of movement parameters and parameters of transverse axis frequency conversion governor, in order to meet the product technical requirements. PLC by reading the process of injection molding machine signals and thimble, through the program is run to ensure the safety of the manipulator and the injection molding machine work coordination.

3.2   Mechatronics mechanical transmission mode

In today's era of technology updates faster, who keep up with technology development, who are likely to get the market. Popular at present, the market of injection molding machine dedicated manipulator, notting have is not use these ideas to design. In this paper, the above ideas stretch into a design pattern: modular structure. The relatively independent components in the system, on the premise of meet the requirements of system technology, the highest cost performance of institution to configuration. According to the structure of this system, the transverse shaft driven by inverter motor with retarding mechanism; Up and down the shaft and driven shaft using cylinder. In the transverse, led, walking up and down on the use of imported high just type linear slide rail. Has shaft and guide shaft assembly pull support the use of commercially available high just type aluminum alloy profiles, transverse axis adopt bevel gear rack transmission. Above all, cost-effective mechanical configuration of higher cost performance control system, which has given rise to great market competitiveness of injection molding machine dedicated manipulator.

4         concluding remarks

Practice proves that the use of very mature PLC and frequency converter speed control technology, and is very mature and advanced mechanical transmission components, adopts the modular architecture, application engineer can quickly design for the enterprise to create production in urgent need of electromechanical integration equipment. Be in equipment modification, upgrade and improve the quality of products, participate in market competition.