Cómo funciona una plegadora?

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¿Qué es una plegadora?

Prensa plegable is a machine used for metal bending and forming. Press brakes drive the punches and die through different driven sources.

Thus, the dies can bend the sheet metal repeatedly many times to form profiles. Materials of different thicknesses and lengths require different bending forces.

Bending force is the tonnage exerted by the press brake. Press brakes produce tonnage in different ways.

The hydraulic press brake is suitable for bending with large tonnage. Driven sources are generally divided into mechanical, hydraulic, electric, and pneumatic types.

The name of the press brake is named after the driving method. The pneumatic bending machine drives the ram through air pressure.

The servo-electric press brake drives the ram to move through the servo motor. Servo electric press brake has very high precision and speed.

¿Cómo funciona una plegadora?

Las prensas modernas pueden dividirse principalmente en prensas mecánicas e hidráulicas.

En la actualidad, la prensa plegadora se ha convertido en la avanzada prensa plegadora hidráulica CNC.

Puede realizar todo tipo de tareas de conformación de piezas complejas y masivas.

La prensa mecánica drives the flywheel through the motor. The staff operates the clutch drive fly control flywheel.

Thus, the crank drives the movement of other parts. The operation of the mechanical press brake is relatively simple.

La plegadora mecánica puede manejar un gran tonelaje de plegado.

La prensa hidráulica es impulsado por el movimiento sincrónico del cilindro hidráulico.

There is a hydraulic cylinder on each side of the uprights. The hydraulic cylinder is connected with the ram through the piston rod.

The movement of the hydraulic cylinder drives the ram up and down. The movement modes of the hydraulic press brake are divided into up-moving and down-moving.

The back gauges accurately position the workpiece through the movement of different axes. The hydraulic press brake has the advantages of high speed and high precision.

La desventaja es que el tonelaje de flexión es limitado.

El CNC prensa plegable es una plegadora hidráulica equipada con un sistema de control CNC.

The CNC control system controls the movement of each part. CNC control system has modular programming functions and high precision.

The operator can set parameters through the control system. For example, bending angle, plate thickness, flange length, cycle time, stress, etc.

The CNC press brake is also equipped with an automatic feeding system. The movement of the ram and the back gauge accurately controls the position of the workpiece.

Synchronous movement of the motor drive axes of the back gauge and the ball screws. The back gauge can accurately measure the length of the flange being formed.

Adjust the bending angle by adjusting the ram movement through the control system. There are basically three métodos de flexión: curvado por aire, curvado de fondo y curvado en relieve.

La elección del método de doblado tiene una gran relación con el espesor de la placa.

Air bending is the most common bending method. During air bending, the workpiece is not in full contact with the bottom die.

El curvado por aire puede realizarse con un tonelaje relativamente pequeño.

The method of bottom bending and coining can also be used as needed. During bending, the hydraulic cylinders drive the movement of the ram.

The ram drives the upper die to exert pressure on the lower die on the workbench. The sheet metal in the middle forms a specific angle through the extrusion of the die.

Tras repetir el doblado muchas veces, se obtiene el perfil final.

La forma de los punzones y las matrices y el movimiento del cilindro determinan el ángulo y la forma de la placa metálica.

La prensa plegadora CNC tiene un control numérico flexible y funciones de programación, que es muy amigable para los operadores.

¿Cómo se monta una prensa plegadora?

First of all, understand the drawing of the bending workpiece, which is a very critical step. Determine the material, length, and thickness of the workpiece.

Ángulo de curvatura, radio de curvatura, dimensión de la brida y tolerancia de la pieza.

En segundo lugar, elegir el método de doblado y la matriz adecuados.

Según la relación entre el radio de curvatura y el espesor del metal, seleccione el método de curvatura adecuado.

For example, air bending, bottom bending, and coining. Select the punches and dies that match the material of the bending workpiece.

En tercer lugar, determine el tonelaje de acuerdo con la tabla de tonelaje.

You can consult the corresponding tonnage estimation of the manufacturer. If it is air bending, you can refer to the tonnage chart to determine the tonnage.

The tonnage of bottom bending is four to six times that of air bending. The tonnage of coining is eight to ten times that of air bending tonnage.

Cuarto, install and adjust the toolings. Check whether the thickness of the toolings and the proportion of the upper and lower dies are normal.

Adjust the stroke of the ram, otherwise, the toolings cannot be used normally. Adjust the upper limit point of the toolings to reserve the stay position of the ram.

Measure the distance between the upper and lower dies and set an appropriate gap. The tightness of the die can be adjusted according to the bending angle.

Al doblar, ajústelo con un manómetro para evitar daños en las herramientas.

En quinto lugar, realice la program procedure of the press brake. This requires the operator to be familiar with the functions of the CNC controller.

Hay muchas funciones de programación, que pueden mejorar la eficiencia del trabajo después de la familiarización.

It can also be programmed offline and used directly by technicians after programming. At this stage, the workpiece cannot be bent directly.

If a bending test is required, scrap plates can be used. The production can be carried out after the bending test has no problems.

If there is a problem with the bent workpiece, you can check the program. After checking and correcting the program, you can operate the press brake.

Estos pasos pueden ahorrar costes y mejorar la eficiencia.

Conclusión

There are many kinds of press brakes, such as mechanical press brakes, CNC press brakes, hydraulic press brakes, etc.

No matter how advanced the technology of the press brake is, its basic working principle is similar.

The modern CNC press brake is more advanced than the previous press brake technology, and the bending accuracy and efficiency have been greatly improved.

ADH produces various CNC press brakes, NC press brakes and large press brakes. You can consult our product experts to learn more about our press brake or other machines.

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