Chapter 7 Design electro-pneumatic circuit môn Pneumatic & Hydraulic Technologyac

Pneumatic & Hydraulic Technology Chapter 7
Design electro-pneumatic circuit
Instructor: Phan Thi Thu Thuy
Instructor: Phan Thi Thu Thuy Email: thuyptt@hcmute.edu.vn Mobile Phone: H 0 ig 90 her 3.130Engi
.454 neering Education Alliance Program
Example : Transfer Station The Problem:
❖ Two cylinders are used to transfer S1 Cylinder B parts from a S2 magazine onto a S3 chute. S4
❖ Confirmation of all Cylinder A extended and retracted positions are required. 2
Example : Transfer Station 3
EXAMPLE: TRANSFER STATION
❖ Displacement-step diagram Step 1 2 3 4 5 = 1 S2 Start Cylinder A S1 S4 Cylinder B S3 I II Pressure supply lines
E1 = S1^Start: Starting signal of Pressure supply line I.
E2 = S4: Starting signal of Pressure supply line II. 4
Example : Transfer Station
The motion cycle can be determined from the
displacement-step diagram and is subdivided into the following steps:
❖ Step 1 Start and S1 actuated Cylinder A advances: A+ = Start ^ S1
❖ Step 2 S2 actuated Cylinder B advances: B+ = S2
❖ Step 3 S4 actuated Cylinder B retracts: B- = S4
❖ Step 4 S3 actuated Cylinder B retracts: A- = S3
❖ Step 5 S1 actuated Initial position 5 Control step signal
Control step signal = L (The number of line includes step)
+ Input signal of step
Note: If control step signal is similar to starting
signal of line, starting signal of line is the priority.
A+ = L1 (Do not combine Start ^ S1: Starting signal of line I) B+ = L1 ^ S2
B- = L2 (Do not combine S4: Starting signal of line II) A- = L2 ^ S3 6 Cascade circuit 2 lines + 24 V Start K1 K1 K1 I E1 1 I e n e i ni L L E2 K1 0 V 7 Exercise 1: Testing
D:\HEEAP\Assignments HEEAP\2 Pneu-Hydraulics - Phan Thi Thu Thuy\0 Course pack - Pneumatic and Hydraulic Technology\3_Slides\Video_Animation\Index Animation 60 Examples\15 Testing - Image 1.bmp C A B 8 Exercise 1: Testing Step 1 2 3 4 5 6 7 = 1 S2 Start Gripper A S1 Rotary unit S4 B S3 Vertical S6 lifting unit C S5 A+ A+ C+ B+ C- A- B- I II 9 Exercise 2: Gluing Adhesive applicator device
D:\HEEAP\Assignments HEEAP\2 Pneu-Hydraulics - Phan Thi Thu Thuy\0 Course pack - Pneumatic and Hydraulic Technology\3_Slides\Video_Animation\Index Animation 60 Examples\9 Glueing - Image 1.bmp E B A D C 10 Excercise 2: Glueing Adhesive applicator device 11 Exercise 3: Unloading
D:\HEEAP\Assignments HEEAP\2 Pneu-Hydraulics - Phan Thi Thu Thuy\0 Course pack - Pneumatic and Hydraulic Technology\3_Slides\Video_Animation\Index Animation 60 Examples\6 Unloading - Image.bmp A B 12 Excercise 3: Unloading Step 1 2 3 4 5 = 1 S2 Start Cylinder A S1 S4 Cylinder B S3 A+ A- B- B+ I II III 13 Cascade circuit 3 lines + 24 V Start K1 K1 K1 E1 E2 K2 K2 K2 E3 ine II ine I ine III L L L K1 0 V K2 14 Exercise 4 Step 1 2 3 4 5 6 7 = 1 S2 Start Cylinder A S1 S4 Cylinder B S3 S6 Cylinder C S5 A+ B+ B- C+ C- A- I II III 15 16 Exercise 5 Step 1 2 3 4 5 6 7 = 1 S2 Start Cylinder A S1 S4 Cylinder B S3 S6 Cylinder C S5 A+ B+ B- A- C+ C- I II III 17 Exercise 5 with Timer Step 1 2 3 4 5 6 7 8 S2 Start Cylinder A S1 S4 15s Cylinder B S3 S6 Cylinder C S5 18 Exercise 6 Step 1 2 3 4 5 6 7 = 1 Cylinder S2 A S1 Cylinder S4 15 B giây S3
Cylinder S6 Start C S5 A+ B+ B- A- I II III C- 19 Exercise 7 Step 1 2 3 4 5 6 7 = 1 Cylinder S2 A S1 Start Cylinder S4 15 B giây S3 Cylinder S6 C S5 A+ I B+ B- A- II III 20