unilateralpreBending machineillustrate

one,equipmentPre-bending range 

Material:Q355，Steel plate length:6000mm-12000mm, steel plate thickness:5-50mm，

two,The purpose, working principle, characteristics and application scope of machine tools

This machine is one of the main machines in the large-diameter straight seam submerged arc welded pipe production line. It is a special unit used for edge pre-bending of steel plates. Pre-bending machines are mainly composed ofC-type frame, cylinder unit,superiorLower beam, mold and moving device,Mold changing device,Front and rear conveyor rollers,centering device,electricsystem, hydraulic system composition.

It is mainly used for pre-bending the edge of steel plates before pipe forming, that is, milling the steel plates for pipe making.sideThen it is fed into the machine section by section between the upper and lower molds, and the material flows and bends under the pressure of the upper and lower molds.。replace、By adjusting the relative position of the mold, a bend with a plate edge curvature radius that is very close to the radius of the finished steel pipe can be obtained.likeWhen two machines are placed opposite each other, the steel plate can be bent on both sides at the same time.

    Product Features: This machine is unilateral pre-bending.For milled steel platesonePerform pressure bending on the side, and press out an arc with a curvature radius close to the radius of the finished steel pipe.Board edge。

This machine is a modified product introduced from German technology. Compared with similar products, it has a reasonable structure, small bending pressure, a large range of bending curvature radius and strong operability.Features。

three,This machine is a special equipment for pipe making, suitable for straight seam steel pipes for oil and gas pipelines, and pre-bending steel plate edges before forming straight seam steel pipes for steel structures.

Four,Structural and performance characteristics of machine tools

The machine consists of a main engine and an auxiliary engine.

The outlet and inlet sides of the machine are equipped with a set of roller conveyors that transport steel plates.Forward and reverse conveyingfunction, and coordinates actions with the machine to work normally.

The host includes: frame, cylinder unit,superiorLower mold beam, mold and mold moving device、Mold changing device,Hydraulic system、Electrical system and other components。

Auxiliary machinery includes: conveyor roller15 meters、RollerSelectProcessed from Ø168 thick-walled seamless pipe,length3 meters, roller distance 900, driven by frequency converter, reducer + chain.centering device4 groups, manually adjust the centering distance according to the width of the workpiece plate (the side close to the pre-bending machine is manually adjusted in a small range, and the other side is motorized). Among them, four groups of motorized adjustments require synchronous adjustment and individual separate adjustment working modes.

1. Frame: The frame is composed of a C-shaped frame. The C-shaped frame is used to install the oil cylinder unit, upper mold beam, lower mold beam, mold and mold moving device.wait，To facilitate maintenance,Hydraulic station installationNext to ground machine tools。

2. Oil cylinder unit: installed in the C-frame of the frame1Group cylinder unit. Cylinder unit packageContains twoOil cylinder（main cylinder+Quick cylinder）:in

（1）The main cylinder is a bent plate cylinder, which is a plunger.ModeOil cylinder，The lower mold beam and lower mold are placed on the end face of the plunger; the two hook head pressure plates pass throughdishspring connected to piston rod。

（2）quickspeedOil cylinderFor piston typeOil cylinder，Offers quick drive-in and quick return.

3. Lower mold beam: The lower mold beam is installed above the oil cylinder unit.andFlexible connection with the plunger rod of the main cylinder,Two symmetrical guide rail plates are also fixed at both ends of the lower mold beam, and the guide rail groove formed at the rear slides along the guide rails on the frame.，A lower mold supporter and a lower mold are installed above the lower mold beam.

4. Mold and mold moving device: this machineBring one randomlyA pair of upper molds and a pair of lower molds.

The upper mold is installed on the upper mold beam of the frame part。

The lower mold is fixed on the lower mold supporter, and the lower mold supporter can move forward and backward on the lower mold beam. According to the pre-bending requirements, the lower mold is moved to have an accurate relative position with the upper mold.

5.hydraulic station: The hydraulic station is installed ingroundsuperior,machine toolThere is a vertical escalator at the back for operators to go up and down.。

6． Conveying roller:

The steel plate is driven by the feed roller of the pre-bending machine into the pre-bending station., moved out by the discharging roller. Has step function.

7.Alignment device:

The steel plate on the feeding roller table consists ofmiddleThe device is aligned, and the centering device also plays a guiding role, from the entrance to the exit.Composed of 2 groups.Centering range900-3800。

8. Mold changing device:

moldThe tool changing device is installed at the outlet and inlet ends of the rack. The upper mold mounting bracket installed at the outlet end of the frame can be placed flat or lifted. Putting the mold on the mounting bracket or taking the mold from the mounting bracket is completed by the overhead crane. The replacement of the lower mold also needs to be realized by using the mold mounting frame. The method is to hang the two ends of the lower mold and the lower mold base on the two ends of the upper mold with tooling, and use the overhead crane to pull the upper mold and the lower mold together. out.