Pimpex Plastic, China
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Pimpex Plastic - Injection Blow Molding IBM Machines

Automatic Injection Blow Molding Plastic Machinery

Automatic Injection Blow Moulding Plastic Machinery
       
www www.plasticimpex.com

Main Specification
Table 1
No.
Model of Machine
Unit
Injection Blow Molding Machine
Injection Blow Molding Machine for PC
WB07-5
WB2-1B
WB2PC-1
WB2PC-2
1
Screw Diameter
mm
40
50
42
52
2
Screw Speed
rpm
0-190
0-180
0-180
0-180
3
Injection Capacity
g
175
300
190
320
4
Clamping Force of Injection Moulds
KN
150
210
240
310
5
Clamping Force of Blow Moulds
KN
30
65
50
65
7
Formability Materials
PE, PP, PS, SAN
PC, PMMA
8
Production Capacity
pcs/h
850-1600
1100-2000
200-600
150-400
9
Motor Power
KW
11
15
15
18.5
10
Heating Power
KW
7
11
11
13
11
Compressed Air
MPa
0.6-1
0.8-1.2
12
Cooling Water
bar
1-3
13
Machine Dimensions
cm
230x125x250
280x140x260
260x135x260
285x150x260
14
Machine Weight
kg
2500
3500
3500
4000
Recommended Hydraulic Oil
Table 2

No.

Item

China code

ISO code

Old China code

Viscosity
(mm/s50 0C)

1

Wear-Resist

YB-N46
YB-N48

HN

30#
40#

27-33
37-43

2

Hydraulic oil

YB-N46
YB-N48

HL

30#
40#

27-33
37-43

3

Mechanical

YB-N30

 

30#
40#

27-33
37-43

Function and Sign of Every Approach Switch
Table 3

Input Port of PLC

Function

Input Port of PLC

Functions

X0

Stopping for the screw mould moving down

X10

Stopping for the unrod air cylinder out

X1

Injecting stopping

X11

The blow mould opening speed turned to slow

X2

Stopping for the screw mould moving up slowly

X12

The blow mould closing speed turned to slow

X3

Stopping for the blow mould closing

X13

The screw mould up quick speed turned to slow

X4

The plastic melting stopping

X14

The screw mould down speed turned to slow speed

X5

The screw back stopping

X15

Stopping for the screw mould up quickly

X6

Stopping for the blow mould opening

X17

The screw mould protection

X7

Stopping for the unrod air cylinder in

X22

Core-in limit

Electrical Elements
Table 4

No

Norms and Model

Item

Power/ Parameter

Numbers

1

FX2n-80M

Mitsubishi PLC

 

1

2

PACR 30PB-30N

Starting motor button

 

1

3

22 2N0

Electing switch

 

2

4

22 2NC

Urgency stop switch

 

1

5

30 DC24

Buzzer

 

1

6

EA63B60A

Automatic air switch

60A

1

7

1p6A

Automatic air switch

6A

1

8

1P25A

Automatic air switch

25A

4

9

100-C09A10

AC contactor

Single phase 9A

4

10

SKG

Temperature controller

 

1

11

H2DA-RPK

Temperature controller

 

4

12

YM10-2M

Thermocouple

 

5

13

P/N 2123XST

Extractor fan , protective casing

-220V/0.14A

1

14

SC-1N

AC contactor

32A

3

15

TR-2N/3(24-26)

Thermal relay

24A-36A

1

16

PR12-40N

Approach switch

 

14

17

PR17-50N

Approach switch

 

3

18

TH670 DC 1A

Current instruments

 

2

19

220V/9V, 24V

Transformer 1 #

S VA-300VA

1

20

220V/35V, 70V

Transformer 2 #

S VA-100VA

1

21

 

Proportional amplifying panel

 

1

22

 

Regulated power supply panel

 

1

23

 

Power amplifying panel for the valves

 

1

24

 

Manual operation panel

 

1

25

 

Automatic operation panel

 

1

26

120 135

heater

1600W

6

27

60 50

heater

350W

1

28

32 20

heater

20W

1

29

50 50

heater

250W

1

30

10 150

Heating rod

300W

4

31

 

Motor

13kW

1

31

KBPC3510

Rectifier

30A

1

Trouble Shooting for Product Quality of Injection Blow Process
Table 5

Trouble

Possible Fault

Remedy

1 Pre-form not formed well.

  • The melt index material higher.
  • High temperature of core mould.
  • The temperature of female mould too higher.
  • Surface polishing of the female mould not good.
  • The melt index the material should below 2.
  • Decrease the oil temperature of the oil temperature controller.
  • Decrease the temperature of the female mould.
  • Increase the quality of surface polishing of the female mould.

2 Too much scrap for the preform

  • Quality of the mould not good.
  • Injection pressure higher.
  • Too more capacity of injection.
  • Longer time of keeping pressure
  • Increase quality of the mould manufacture.
  • Decrease Injection pressure.
  • Reduce capacity of injection.
  • Reduce the time of keeping pressure.

3 Blow molding is not good.

  • The temperature of the bottom of pre-form higher.
  • The material not good for injection and blow process.
  • The heating temperature not right(higher or lower).
  • The temperature of pre-form not adjusted well.
  • The thickness of pre-form not uniform.
  • Decrease the temperature of the bottom of pre-form.
  • Choose the right melt index or change material.
  • Adjust heating temperature.
  • Adjust the pre-form temperature.
  • Repair or adjust the mould.

4 Insufficient preform

  • Injection capacity not enough.
  • Injection pressure lower.
  • Melted material comes out from nozzle not uniform.
  • Temperature of the material lower.
  • Air exhausting from the female mould not well.
  • Adding material is not enough when keeping pressure.
  • Increase injection capacity.
  • Increase injection pressure.
  • Repair the nozzle of channel for the melting material out.
  • Increase the temperature of the material.
  • Make air exhausting channels on the female mould.
  • Increase the time of keeping pressure.

5 After blow molding, it explodes when the blow moulds open.

  • The air exhausting valve not operating(opens).
  • The air exhausting part blocked by materials.
  • The air exhausting piston not action.
  • The sealing of exhausting piston defected.
  • The time of air exhausting not enough.
  • Check the electrical circuit.
  • Clean away the left materials and polish the sealing surface.
  • Check the air exhausting piston.
  • Change the sealing.
  • Protract the time of air exhausting.
Trouble Shooting for Machinery
Table 6

Trouble

Possible Fault

Remedy

1 No pressure after starting the oil pump

  • The adjust handle of the overflow valve loosed .
  • The oil pipe is blocked.
  • Pressure proportioned valve not well adjusted.
  • Wrong running direction of the motor.
  • Adjust the handle.
  • Clean away all the dirty matters.
  • Check the electrical control circuit.
  • Change running direction of the motor.

2 Noise of oil pump too higher.

  • Oil level in the tank is lower.
  • Air get into the hydraulic system.
  • Oil filter blocked.
  • Problem of the pump.
  • Charge in some oil.
  • Check the oil suction hole.
  • Clean the oil filter.
  • Check the oil pump.

3 Hydraulic motor not running.

  • The pressure too lower.
  • The temperature of the barrel lower.
  • Foreign matters get into the barrel.
  • Hydraulic motor has something problem.
  • Increase the pressure.
  • Increase the temperature of the barrel.
  • Check the barrel.
  • Repair hydraulic motor.

4 Injection and screw back not starting.

  • The pressure at pressure reducer is too lower,
  • The keys of transfer spindle damage.
  • Direction valve blocked.
  • Electrical signal off.
  • The temperature of material too lower.
  • Adjust the pressure of pressure reducer.
  • Change the key sleeve of spindle.
  • Clean the direction valve.
  • Check the electrical circuit.
  • Increase the temperature of material.
Definition table of the I/O of PLC
Table 7

Input Port

Definition

Output Port

Define

X0

Screw mould moving down stopping

Y0

Address

X1

Injection stopping

Y1

Address

X2

First stopping for screw mould moving up

Y2

Address

X3

Blow mould closing stopping

Y3

Address

X4

Plastic melting stopping

Y4

 

X5

Screw back stopping

Y5

 

X6

Blow mould opening stopping

Y6

 

X7

Unrod air cylinder in stopping

Y7

Manual operating

X10

Unrod air cylinder out stopping

Y10

Semiautomatic operating

X11

Blow mould opening speed turned to slow

Y11

Unrod air cylinder selection

X12

Blow mould closing speed turned to slow

Y12

Preset operating

X13

Screw mould up quick speed turned to slow

Y13

Address

X14

Screw mould down speed turned to slow

Y14

Address

X15

screw mould up stopping

Y15

Address

X16

Motor overload

Y16

Automatic operating

X17

Screw mould protection

Y17

 

X20

Hearting

Y20

Data

X21

Motor running

Y21

Data

X22

Core-in stopping

Y22

Data

X23

 

Y23

Data

X24

 

Y24

Data

X25

 

Y25

Data

X26

 

Y26

Data

X27

 

Y27

Data

X30

Core-out

Y30

Data

X31

Core-in

Y31

Data

X32

Air blowing

Y32

Data

X33

Air exhausting

Y33

Data

X34

Unrod air cylinder in

Y34

Data

X35

The products sideslip

Y35

Data

X36

Screw mould down

Y36

Data

X37

Standby

Y37

Data

X40

Screw mould up slowly

Y40

Pressure D0

X41

Screw mould up quickly

Y41

Flow D0

X42

Plastic melting

Y42

Flow D1

X43

Screw back

Y43

Flow D2

X44

Standby

Y44

Flow D3

X45

Injection

Y45

Flow D4

X46

Blow mould closing

Y46

Flow D5

X47

Blow mould opening

Y47

Flow D6

X50

Manual operation

Y50

Unrod air cylinder turning

X51

Semiautomatic operation

Y51

Buzzing

X52

Automatic operation

Y52

Pressure D6

X53

Unrod air cylinder selection

Y53

Pressure D5

X54

Automatic operation cycle time

Y54

Pressure D4

X55

Indicating for output

Y55

Pressure D3

X56

Pre-set (Adjusting)

Y56

Pressure D2

X57

Pressure adjust

Y57

Pressure D1

X60

Flow adjust

Y60

Blow mould opening S1

X61

Moving backward

Y61

Blow mould closing S2

X62

Cyclic moving forward

Y62

Screw mould down S3

X63

Current value +1

Y63

Screw mould up S4

X64

Current value C1

Y64

Core-out S5

X65

Data memory

Y65

Injecting S6

X66

 

Y66

Screw back S7

X67

 

Y67

Plastic melting S8

X70

 

Y70

Blow mould opening keep S9

X71

 

Y71

Core-in S9

X72

 

Y72

Wyes starting for motor

Y73

Pressurize S12

Y76

Air exhausting S15

Y74

Pressure keep S13

Y77

Unrod air cylinder in or out S16

Y75

Air blowing S14

 

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