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High property bender capable of reducing energy diffusion

A bending machine and bending technology, applied in the direction of electrical components, electric solid devices, circuits, etc., can solve the problems of low energy efficiency and achieve the effect of reducing energy consumption

Inactive Publication Date: 2003-04-23
SALVAGNINI ITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In particular, a disadvantage is the low energy efficiency due to the large amount of hydraulic energy dissipated as heat and cooled by suitable coolers

Method used

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  • High property bender capable of reducing energy diffusion
  • High property bender capable of reducing energy diffusion
  • High property bender capable of reducing energy diffusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] figure 1 The press brake shown in includes a fixed base 1 supporting a pair of blades 2 on which the side edges of a sheet metal blank 3 moved by a manipulator controller (not shown) are placed.

[0012] A blank holder 4 cooperates with the counter blade 2 to clamp the edge of the sheet metal. The blank holder is connected to the front end of a movable support 5 whose rear end is hinged at 6 on the rear of the stationary base 1 . The supporting member 5 is driven to move up and down by a plurality of hydraulic cylinders 7 .

[0013] A bending unit 8 comprises a support 9 shared by two bending blades 10 and 11 cooperating with counter blades 2 to bend the clamped edge of the sheet metal. The bending unit is subjected to a combined horizontal and vertical movement caused by a hydraulic actuator consisting of a hydraulic cylinder 12 and a hydraulic cylinder 15, the hydraulic cylinder 12 being placed at the rear of the base 1 and a rod having a fixed hinge 14 and a movabl...

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PUM

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Abstract

A bender includes a bending unit (8) which is driven by a hydraulic actuator (12, 15) controlled by a variable hydraulic pump (16). The variable hydraulic pump (16) is disposed with a control system (25, 29, 35, 37, 39) for controlling flow speed, pressure and power for an electronic closing loop that includes an electric control proportion valve (25). The valve (25) includes a valve groove (26) for controlling the rotation angle of the control pump (16) and a proportion solenoid (27) for moving the valve groove (16) to a position with needed rotation angle corresponding to the pump (16). The control system (25, 29, 35, 37, 39) includes an induction position sensor (35), a pump rotation angle sensor (37), a pump pressure sensor (39) and a program electric control unit (29) which receives the receive position, rotation angle and pressure signals (34, 36, 38) from the sensors (35, 37, 39) and predefined pressure, power and flow speed instruction (30, 31, 32), and transmits a control signal (28) to the proportion solenoid (27).

Description

technical field [0001] The present invention relates to a machine for programming folding plates of the general type known in the art as a folding machine. Background technique [0002] These bending machines are capable of automatically moving a sheet metal blank to a level placed in front of a press brake equipped with a bending unit with one or two bending blades capable of Each side of the blank is subjected to multiple bends that are bendable in size, angle and direction. The press brake also includes a fixed counterblade and a variable size blank holder cooperating with the counterblade to hold the blank adjacent the edge of the blank to be bent. The bending unit and the blank holder are actuated by controlled hydraulic actuators consisting of hydraulic cylinders. An example of this state of the art is given in European patent EP-A-0293964. [0003] The advantages of this machine are constant productivity and flexibility in production and programming. But has some ...

Claims

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Application Information

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IPC IPC(8): H01L27/11B21D5/04H01L21/8244
CPCB21D5/04
Inventor 沃尔夫冈·孔策
Owner SALVAGNINI ITAL