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Separating couples the handling functions of quantity changing and checking.
Organization
Name of Project: Field-Pro-System
Submitted to: Mech-Consulting
Project Manager: Project Start Date: 21/1/2013
Project End Date: 18/02/2013
Introduction
The Field-Pro-System is automatic packing lines with two cylinders with PLC control based on fieldbus for production line control system.
The aim of the project is to install and test of profibus – sequence controlled electro-pneumatic packing line control system. All the control tasks are done by Siemens PLC Master (S7-313C-2DP) and profibus slave station is Festo’s profibus valve terminal.
Team member: Ge Lining
Huang Xiaoxiao
Igor Kuzmenko
David Meliksetyan
Estimated Cost
The total cost of the project is 3500 ˆ which includes insurance and the labour cost of two of us (team members)
Stakeholder
TIMO ELORANTA
Mech-Consulting Ltd.
Pohjolankatu 23, 53100, Lappeenranta, Finland
Timetable of Project
| S.n. | Task | Person | Start | End | Workload |
| Writing Project Proposal | Huang Xiaoxiao | week 37 | week 38 | 2 weeks | |
| Submitting Proposal | Huang Xiaoxiao | week 39 | week 39 | 1 week | |
| Finding working solution | Ge Lining | week 40 | week 41 | 2 weeks | |
| Making circuit diagram | Ge Lining | week 42 | week 42 | 1 week | |
| Simulating & correcting circuit | Igor Kuzmenko | week 43 | week 43 | 1 week | |
| 6. | Installation of circuit, sensors and others | Igor Kuzmenko | week 44 | week 45 | 2 weeks |
| 7. | Downloading circuit on PLC and testing | David Meliksetyan | week 46 | week 47 | 2 weeks |
Cost Calculation
We have calculated the cost on the following topics.
| S.No | Topic | Price ˆ |
| PLC master | ||
| Profibus | ||
| Cables, bolts, and misc | ||
| Inductive proximity sensors | ||
| 2 cylinders | ||
| Insurance | ||
| Labour cost | 1500 (75 ˆ/week/person) | |
| Total |
Outcome of Project
With the present packing system, we can only pack at the rate of 20 per minutes. But with the installation of the new PLC based system, we can pack 50 per minutes. Thus with this new system, the company can cope with its demand of the product in the market easily and satisfy customer with product on demand.
Risks
System limitation
- Problem in finding right solution to sequence diagram
- Connection mistake
- Lack of operating knowledge
Schedule Risks
- Unexpected incident at works or to workers
- Sickness of workers
- Delay in delivery of goods like sensors, PLC, and others
Goal of the project
— The goal of this project is increase the productivity of assembly cell production by at least 30 %
Our stations
Seperating
Process
Pick and Place Module
The Pick & place station is an automated insertion device.
The Pick & place station inserts a workpiece insert into a housing. The workpiece inserts available are a clock, a thermometer and a hygrometer.
The role of the Pick & place station is to
· Transport workpieces (housing)
· Stop workpieces (housing)
· Insert workpiece inserts
· Separate complete workpieces (housing and insert)
The Pick & place station is equipped with a two-axis Pick & place module. Workpiece housings placed on the conveyor belt are detected by a diffusion sensor. The workpiece is conveyed to an electrical separator and there detected by a second diffuse sensor.
The Pick & place module picks up a workpiece insert from the slide and places it on the workpiece housing. The complete workpiece (housing and insert) is released by the separator and transported to the end of the conveyor. A light barrier detects the workpiece at the end of the conveyor belt.
The station allows the following other functions to be implemented:
· Segregation of workpieces (housings or bodies) on the slide
· Alternative feed of workpieces (housings or bodies) from the slide
Separating Module
Separating couples the handling functions of quantity changing and checking.
According to VDI 2860, that means allocating and separating a quantity of different parts through information acquisition (ACTUAL) and the comparison of specified characteristics (DESIRED), requiring defined characteristic categories. The Separating station separates the material flow of the workpieces body (cylinder) and housing (clock, thermometer, hygrometer).
For separating the material flow the conveyor section is equipped with two conveyor belts. A sorting branch is switched dependent on the workpieces. Controlled workpieces can be transported to the pick-up point at the end of conveyor belt 1 or a subsequent station (0° staggered) or be sorted out onto conveyor belt 2 or be transported to a further subsequent station (90° staggered).
Date: 2015-12-17; view: 844