Mould construction for Light RTM

Mould construction
for Light RTM
Advantages
regularity in production
 no physical contact with the resin
 styrene-free workshop environment
 lower tooling cost versus RTM and SMC/BMC
 quick and easy mold and counter mold production
 various choice in resin
 interesting for large parts
 easy production of sandwich parts

1 Closing of the mold
2 Resin injection
TYPE RT 121
Presentation of the process
middle of the mold
3 Vacuum control in the
DANFOSS
0.6
0.8
0.6
0.4
0.2
1.0
0.8
0.4
0.2
1.0
3
4
0
6
1
5
3
4
0
6
1
5
Solvant
Résine
The mold
Critical place of the system
Pot to recuperate resin overflow
counter mould
Mould
Trolly
Détail of the technical flange
Counter mould
Mould
Rovicore
The closing action of the mold
Mould closure vacuum
Injection point
2. Tightness closure
Hermetic sealing
3. Injection of the resin
Production of the mold
150
Skin 1
Skin 2
Dimensions in mm
Sandwich core
Dimensions of the technical flange
20 5 20
55
10 10
25
Dimensions in mm
All radii of 5 mm minimum
10
5
8
10
Use of a profile
Cutting the profile
Laminate profiles with
3 coat of mat 450 gr
Mould
Cross section
Mould border
Use of a profile
1. Positining of the calibrated wax
2. Positioning of the profile
3. Laminating of counter-mold with the profile
Fabrication of the technical flange
Fabrication of the technical flange
Fabrication of the technical flange
Calibrated wax according
to fickness required
First layer of the calibrated wax
5mm calibrated wax required
Fabrication of the technical flange
Silicone seal 10x5mm
Positioning of the silicone seal
Fabrication of the technical flange
Foam cut to size covered
With to layers of PVC tape
Fabrication of the technical flange
1mm calibrated wax
3 layers of cork or
calibrated wax 3 mm
Rounding out with plasticine
Positioning of the accessories
Exemple of the resin flow with 1 injection point
Injection Point
Location of the vacuum Point
Resin flow
Rovicore
Exemple of the resin flow with 2 injection point
Injection Point
Location of the vacuum Point
Resin flow
Rovicore
The injector
PE or PA 10 x 8 mm tube
PTFE part
Metal part
View from below
Silicone between Injector & laminat
The vacuum pot
Female vacuum coupling
Quick coupling
Cover with seal
Overflow pot (metal)
Metal insert
"o" ring
The vacuum pump
Vacuum pump
vaccuostat
Electrical regulator
Electrical panel
Air filter
0.6
0.8
0.6
0.4
0.2
1.0
0.8
0.4
0.2
1.0
Vacuum gauge
Active carbon filter
Adjustable vacuum valve
Max vacuum valve
Casters