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Booster and press working device

A technology of processing device and supercharger, applied in fluid pressure actuating devices, presses, fluid pressure converters, etc., can solve problems such as increasing energy consumption

Inactive Publication Date: 2002-08-28
INST OF TECH PRECISION ELECTRICAL DISCHARGE WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this approach it would be necessary to provide an additional hydraulic component including a hydraulic pump, and would increase undesirably energy consumption

Method used

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  • Booster and press working device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0083] The first embodiment of the present invention has the following effects:

[0084] 1) The stroke of the movable die required for press processing parts can be relatively large. This allows the moveable mold to be moved at relatively high speed through the range of motion with a small actuation force, thereby applying a large actuation force between relatively short strokes in the final stage.

[0085] 2) The operating device requires a very small amount of hydraulic oil, and since it is not necessary to supply high-pressure hydraulic oil to hydraulic components, etc., it requires very little energy consumption.

[0086] The first embodiment described above has a structure in which the cavity 36 and the protrusion 34 are located on the actuating piston 33 . The actuating piston 33 can descend at the same descending speed as the plunger 27 until the protruding member 34 passes the bottom end of the sliding member 35 extending continuously toward the upper part of the cyli...

no. 2 example

[0111] The second embodiment of the present invention has the following effects:

[0112] A) The second piston 124 descends at the same descending speed as the first piston 123 until the upper end of the protruding part 125 that is positioned on the top of the second piston 124 and is integrally formed with it passes through the downwardly moving, communicating first cylinder 121 and the first cylinder 121. Part of the second cylinder block 122 . That is, since the pressure in the cavity of the second cylinder above the second piston 124 is low during this period, hydraulic oil is supplied thereto from the oil tank 138 by means of the check valve 141 . In addition, hydraulic oil is discharged from the cavity of the second cylinder below the second piston 124 into the oil tank 133 by means of the switching valve 134 and the one-way valve 141 during this period. Therefore, the second piston 124 descends at the same speed as the first piston 123 .

[0113] B) When the upper end...

no. 3 example

[0139] The third embodiment of the present invention can obtain following effects:

[0140] 1) The stroke of the movable mold required by press processing parts is relatively large, which allows the parts to move at relatively high speeds, especially when only small driving forces are required, and allows the parts to produce large dies in a relatively short stroke in the final stage. driving force.

[0141] 2) Since the actuation piston 226 and rod 227 are loaded from below due to the presence of the workpiece, a predetermined large actuation force is generated at any position between the beginning and the end of the movable part.

[0142] 3) Because the operating device requires a very small amount of hydraulic oil, the energy consumption is extremely small, and there is no need to supply high-pressure hydraulic oil to the hydraulic components.

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PUM

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Abstract

The pressure processing device of the present invention is adopted so that the device can move at a high moving speed in the first stroke stage before pressing the workpiece, and generate a large pressing force in the second stroke stage immediately before pressing the workpiece. The press working device has a first cylinder with a small diameter and a second cylinder with a large diameter; during the first stroke phase, the moving speed of the first piston in the first cylinder is substantially equal to that of the second piston in the second cylinder. The moving speed and the pressing force applied to the workpiece are increased by the movement of the second piston according to Pascal's law.

Description

field of invention [0001] The present invention relates to a pressure booster and a pressure working device having the pressure booster for use in pressure working such as metal plate processing and metal plate punching, and more particularly to such a pressure booster and a pressure working device that It is capable of applying a large actuation force to the press-worked part when a relatively large stroke is generated by using a reciprocating drive unit in combination with a hydraulic cylinder. Background technique [0002] Heretofore, a hydraulic cylinder, especially an oil hydraulic cylinder, has been widely used as a device for driving a movable punch of a press working member having a movable die and a fixed die in a press working apparatus. When a large actuation force is applied to a press working member in a press working apparatus operated by a hydraulic cylinder, a pressure booster based on Pascal's principle has been widely used. [0003] Figure 14 is a view to...

Claims

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Application Information

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IPC IPC(8): B30B1/32B30B15/16F15B11/032
CPCB30B1/323B30B15/161F15B11/0325F15B2211/214F15B2211/30505F15B2211/40515F15B2211/41527F15B2211/455F15B2211/46F15B2211/50581F15B2211/5159F15B2211/7053F15B2211/775B30B15/00
Inventor 二村昭二金子广光
Owner INST OF TECH PRECISION ELECTRICAL DISCHARGE WORKS
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