Metal Plate Bending Machine

Economical and practical fully hydraulic 3-roll bending machine with pre-bending.

Rolls length up to 6.000mm, plate thickness up to 150 mm, we can design and manufacture special rolling machine according to customer request.

Widely used in petroleum, chemical, boiler, shipbuilding, hydropower, metal structure and machinery manufacturing industries.

Features:

1. This machine is particularly suitable for medium plate and stainless plate for the production of cylinders and varying radiuses parts.

2. Top roll is driven by oil cylinder, move up and down, and horizontal. 

3. Two bottom Rolls are powered by motor, reducer, gear.  

4. Hydraulic drop-end for ease of finished cylinder removal 

5. Easy operation with working table

6. Pre-bending function

7. Digital read-outs

8. Steel welded heavy frame construction, strong and solidity

9. High tensile hardened rolls, heat treated

10. Hydraulic balancing device

Composed Of Equipment:  

(1) Top roller structure including two main cylinders, bearing block, heavy duty self-aligning spherical roller bearings, top roller 42CrMo, heat treated. 

(2) Bottom roller structure, including bearing block, bottom roller, gear etc

and horizontal movement for pre-bending, including motor, speed reducer, worm gears etc

(3) Support roller structure for supporting the bottom rollers, including rollers, bearing block, connection etc. 

(4) Main drive structure including main motor, brake, main speed reducer etc 

(5) Tip device for removal the finished product, including slide and cylinder 

(6) Hydraulic system 

Including gear pump, hydraulic valve, connection and other hydraulic parts etc 

Japan Yuken hydraulic valve, easy and convenient for maintenance and adjustment 

Famous Changyuan gear pump, high performance, low noise. 

(7) Electrical system 

Including electrical cabinet, moveable operation table, remote controller. 

Working voltage is 380V 50Hz 

PLC programmer is Delta from Taiwan, less relay, reliable motion, long life 

Main parts are from Siemens or Schneider, high quality and reliable.  

Components Of Equipment: 

Hydraulic elements: YUKEN/Japan 

Emergency system: Emergency push button on control panel 

Electric equipment: Siemens / Schneider 

PLC: Delta / Taiwan 

Motor: Shandong Kaiyuan Group 

User's manual in English

Rolling Process: 

Cone Bending Device Optioal 

Technical Data: 

How To Lubricate Metal Plate Bending Machine?

When the rolling machine is in use, if there is a problem of wear and gear, we should think about whether it is lack of maintenance. At this time, we need to add some lubricating oil to it, so that it can better achieve the lifting effect in operation. This is also an effective method, so how do we need to add it in the process of use?

1. Each lubrication point is sufficiently lubricated before the rolling machine is started;

2. The gearbox should be replaced with new oil after 300 hours of use, and once every 3 to 6 months;

3. When the machine is working continuously, the manual lubrication point is once every 8 hours;

4. The lubricating oil is clean, meets the standard, and must not allow impurities to be mixed;

5. All sliding mating surfaces should be kept clean, and the oxide scale dust generated in the production process should be removed in time to prevent early wear of parts;

6. Manually lubricate the machine with 3# calcium-based grease or lithium-based grease.

When adding lubricating oil to machine, in order to achieve better lubricating effect and achieve the purpose of improving its efficiency, we must operate in strict accordance with the specified requirements. 

Q1 WHAT IS THE DIFFERENCE BETWEEN TUBE AND PIPE?

Often today, you may not have actual part prints available to confirm material size and dimensions. A measuring device such as vernier calipers can be used to gauge the material's

outside diameter (O.D.) and inside diameter (I.D.), which will enable you to confirm necessary dimensions and make simple drawings.

Knowing the material’s true dimensions is key to selecting the proper machine and tooling for your application. Pipe sizes are measured by I.D., with wall thickness referred to in

terms of schedule. Tube sizes are based on O.D., and wall thickness is referred to in gauge sizes.

Q2 WHY IS MATERIAL SO IMPORTANT?

When purchasing tube for your job, remember that the cheapest isn’t always the best. Bending tube or pipe of poor quality material often leads to poor-quality bends, higher rates

of scrap, and possible breakage. Even the best machinery and tooling won’t overcome poor-quality tube material.

Material grade affects the tooling selection and composition; make sure the tooling is supplied to your material specifications so it doesn’t conflict with the material to be bent.

As an example, stainless tube can conflict with a steel counter bend die.

When making a decision about material for your application, consider application strength requirements, appearance and quality, and centerline radius specifications. Ask your

steel supplier for the material specification to ensure the material is appropriate for bending.

Q3 WHAT IS THE MAXIMUM DEGREE OF BEND?

This may sound simple; however, it is not if you are not given prints and are asked to reproduce parts from sample pieces.

Rotary draw bending tooling usually is designed to accept a maximum bend angle of 180 degrees. When selecting bending machinery for your application, be sure the machine

program or system allows for slight overbending to compensate for springback during the bend cycle. Selecting a bending machine with a programmable bend angle setting can

provide high bend accuracy and ease of use.

Degree of bend also affects bend quality. When working with a new material, try making two test bends—one at 45 degrees and one at 180 degrees. You may see slightly different

results in the workpiece, because greater bend angles produce more wall thinning and deformation in the material.

Q4 WHICH BENDER IS RIGHT FOR MY SHOP?

Tough question, and maybe most important. No one bender is right for everyone. When selecting a bending machine, consider all of the points in this article before purchasing one.

Also be sure to consider what capacity you might require in the future. Purchasing an inexpensive machine today could prove more costly in the future as other applications arise.

Other considerations include machine versatility, features, tooling, availability of parts, and qualified local and regional support.

Decoding Bend Terms

CLR – centerline radius. Distance from the center of the forming die to centerline of the material

DOB – degree of bend. Number of degrees required in a bend

Sch. – Schedule, or wall thickness of pipe

Ga. – Gauge, or wall thickness of tube

O.D. – outside diameter. Tube is measured here

I.D. – inside diameter. Pipe is measured here

Q5 HOW TO CHOOSE THE PIPE/TUBE BENDING MACHINE?

You have to inform us following details:

- Max. outside diameter

- Wall thickness range

- Bending radius (CLR)

- The pipe material

- The drawings if possible