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HANGZHOU ROLL FORMING MACHINERY CO., LTD
Products   -   Roof   -   250 Metal Roofing Machine
This metal roofing roll forming machine is designed for steel sheet cold forming industries. It can continuously form steel sheets according to customer requirements. Our metal roofing roll forming line is characterized by high forming speed, low noise, stable transmission, easy operation, attractive appearance, and so on.

Technical Parameter
Item Parameter Remark
Material Type Colored steel
Thickness (mm) 0.4-0.8
Yield strength (MPa) 230-300
mm) 1250
Forming speed (m/min) 20-25 Cutting time excluded
Forming main motor power (kW) 3 × 4 According to actual design
Decoiler hydraulic power (kW) 3 According to actual design
Hydraulic station power (kW) 2.2 According to actual design
Total power (kW) 17.2 According to actual design
Power AC380V, 50Hz, 3 Phase According to actual design
Dimension (L × W × H, m) 20 × 3 × 2 According to actual design


Components
Item Quantity Technical Description
Decoiler system Arm type decoiler 1 set Arm-type hydraulic expansion decoiler.
Main forming system Guiding device 1 set 1. Roller material: No.45 steel with hard chrome plated surface. 2. Inner support structure of roller: guiding column. 3. The back/forward movement of roller is driven by chain, and its upward/downward movement is driven by gear. 4. Cutting blade material: Cr12, quenching treated.
Roll forming system 1 set
Post-cutting device 1 set
Output system Runout table 2 sets For supporting the finished plate. Each runout table is 2-meter long.
Hydraulic system 1 set Separated hydraulic stations are designed for decoiler and cutting system.
Electric control system 1 set 1. PLC control. 2. Operation: touch screen and buttons. 3. AC frequency for adjusting the speed.


Working Flow
Decoiling → guiding → roll forming → cutting to length → conveying the finished panels to runout table

Component Details
1. Arm type automatic decoiler
a. Structure

Structure Decoiler type Expanding type Press arm Coil car Hydraulic system Electric control system
Arm type Passive Hydraulic No No Separated Shared


b. Parameter
Max. loading capacity (t) 5
Coil ID (mm) Φ508
Max. (mm) 1250


c. Features
1) Machine frame adopts welding structure with shot blasting treatment.
2) It uses hydraulic cylinder to expand or decrease the inner diameter of decoiler, and finally tighten the coil.
3) Put the steel coil on the middle part of the mandrel, then tighten the coil through the hydraulic cylinder. After starting the machine, driven by the hydraulic motor, the steel sheet will be released. Take the sheet to the forming rollers and it will move automatically while the rollers run.

2. Guiding device
1) It adopts guiding bar and sliding block to control the width and position of the steel sheet.
2) The sheet is guided in the correct position and moves to the roll forming equipment.

3. Roll forming system
Roll forming system consists of machine frame, transmission parts, roll forming rollers, etc. 1) Machine frame: welding structure with blasting treatment.
2) The roller is made of high quality No. 45 steel with hard chrome plated surface.
3) Inner support structure of roller: guiding column.
4) Back/forward movement of roller is driven by chain, and part of the upward/downward movement is driven by gear.
5) Manually adjust the screw bar to adjust the distance between upper and lower rollers for sheets with different thicknesses.

3. Post-cutting device
1) Cutting blade material: Cr12, quenching treated.
2) Welded frame for enhanced rigidity.
3) The power of cutting is supplied by the hydraulic station.

4. Runout table
1) For supporting the finished panels.
2) Two runout tables are designed. Each of them is 2-meter long.

5. Electric control system
1) PLC control and frequency speed adjustment help realize automatic production.
2) Human and machine interface facilitates the setting of plate length, quantity, etc.
3) Operation: touch screen and buttons.
4) Encoder is designed to calculate and measure the length of panels.
5) Mitsubishi frequency inverter.

6. Hydraulic system
1) Decoiler and cutting system use separated hydraulic stations.
2) Main valve: Shanghai Lixin.

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