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Continuous punching device for sheet metal strip

A technology for punching devices and metal strips, which is applied in metal processing equipment, piercing tools, manufacturing tools, etc., and can solve problems such as large inertia, inability to meet the punching requirements of metal strips, and complex mechanical structures

Inactive Publication Date: 2011-08-24
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of the punching mechanical device using the crank slider mechanism is that the mechanical structure is complex and the inertia is large during high-speed movement; Due to the limitation of frequency, it cannot meet the high-frequency (>60 times / min) punching requirements of metal strips

Method used

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  • Continuous punching device for sheet metal strip
  • Continuous punching device for sheet metal strip
  • Continuous punching device for sheet metal strip

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] (1) According to figure 1 As shown in the schematic diagram, the device of the present invention is installed on the production line to complete equipment debugging.

[0024] (2) According to the hole group length L 1 (mm), Hole spacing L 2 (mm) and metal strip forward speed V 0 (mm / s) Determine punching frequency f

[0025] f=V 0 / (L 1 +L 2 )

[0026] (3) According to pinch roller radius R(mm) and hole group length L 1 (mm) and hole group spacing L 2 (mm) Calculate the transmission ratio i of the speed ratio conversion hanging wheel

[0027] i=2πR / (L 1 +L 2 )

[0028] According to the transmission ratio i, replace the corresponding speed ratio conversion hanger.

[0029] (4) When the pressure oil source is connected, the device of the present invention works to punch holes automatically and continuously.

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Abstract

The present invention provides a continuous punching device for a sheet metal strip, and belongs to the technology field of sheet metal strip cold working. A velocity measurement encoder arranged on a pinch roll is used for detecting the forward velocity of the sheet metal strip, and a PLC controller is used for processing received signals and sending regulatory signals to a proportional flow control valve so as to regulate the flow rate of pressure oil that enters a horizontal oil cylinder, making the forward velocity of a slide carriage being synchronous with the forward velocity of the sheet metal strip. In the forward moving process of the slide carriage, a vertical oil cylinder above the slide carriage drives a punching cutting tool to make a reciprocating movement under the control of a reversing valve so as to realize punching of the sheet metal strip. A speed ratio transforming device connected with the pinch roll drives two coaxially-arranged cams to rotate so as to make the reversing frequencies of two reversing valves being automatically adaptable to the motion velocity variation of the sheet metal strip, thus equal interval punching is guaranteed. The device is mainly used for a self-adapting high frequency continuous punching of solid strips such as the sheet metal strip, a plastic strip, etc.

Description

Technical field: [0001] The invention belongs to the technical field of cold processing of metal strips, and in particular relates to a continuous punching device for metal strips. Background technique: [0002] The key technical requirements for punching a moving metal strip are (1) when the punching tool contacts and leaves the material to be punched, the overall movement speed of the punching tool device should be the same as the moving speed of the metal strip unanimous. (2) The punching frequency is required to automatically adapt to the change of the moving speed of the metal strip to ensure that the hole spacing on the strip is consistent. At present, the technical methods for punching metal strips in motion mainly include a device using a mechanical crank slider mechanism, and a device using two electromagnetic reversing valves to control the coordinated action of two oil cylinders (or cylinders). The main disadvantage of the punching mechanical device using the cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D28/34B21D28/26
Inventor 汪世益丁涛时礼平石宝玉
Owner ANHUI UNIVERSITY OF TECHNOLOGY