SJR Machinery Co., Ltd.
The 4 roll plate bending machine is the easiest one, thanks to a frame designed to satisfy every kind of needs. Advantages are various :
★ Pre-bending is highly reduced because the material gets pinched by in between the two central rolls.
★ Working can be made in one only pass, following the steps here below:
- Squaring
- Pre-bending
- Bending
- Closing pre-bending
★ The plate is fed into the machine horizontally thanks to the support of the lower roll (B) with the side roll (D).
★ The plate is squared thanks to the position that the side roll (C) takes.
★ The space to the limit of the machine reduces to one side only, thanks to the possibility of squaring and bending in one only step.
We advise a 4 roll plate bending machine :
★ For a high and massive production
★ For the possibility to control by NC
★ For the possibility to make conical bendings
|
Material Yield Limit |
σs≤245MPa |
|
Max. bending thickness |
16mm |
|
Max. pre-bending thickness |
12mm |
|
Max. bending width |
2000mm |
|
Min. reel diameter with Max. size |
500mm |
|
Top roller diameter |
300mm |
|
Bottom roller diameter |
280mm |
|
Side roller diameter |
240mm |
|
Bending speed |
4mm/min |
|
Lifting mode of bottom roller |
Hydraulic |
|
Control mode |
PLC |
|
Display of position and displacement |
LCD |
|
Lifting synchronous precise |
±0.2mm |
|
Hydraulic system working pressure |
19.5Mpa (MAX) |
|
Speed of lifting bottom roll |
About 80mm/min |
|
Stroke of bottom roll |
30mm |
|
Speed of lifting side roll |
About 80mm/min |
|
Max load of top roll sustainable |
110tons |
|
Max load of bottom roll sustainable |
90tons |
|
Max load of side roll sustainable |
60tons |
- Main Hydraulic Parts By YUKEN (Japan Brand)
- Main Electric Parts By SIEMENS (Germany Brand)
- Bearing By WAFANDIAN (China Brand)
- Forged Rolls By NANGANG STEEL (China Brand)
- PLC By OMRON (Japan Brand)
- Seals By VALQUA (Japan Brand)
- Hydraulic station motor By SIMENS (Germany Brand)
- Rollers By Nanjing Steel (China Brand)
Parts Used:
Main Hydraulic Parts By YUKEN (Japan Brand)
Main Electric Parts By SIEMENS (Germany Brand)
Bearing By WAFANDIAN (China Brand)
Forged Rolls By NANGANG STEEL (China Brand)
PLC By SIEMENS
Seals By VALQUA (Japan Brand)
Hydraulic station motor By SIMENS (Germany Brand)
Rollers By Nanjing Steel (China Brand) 42CrMo forgings
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