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Industrial press safety system

A technology for safety systems, stamping machines, applied in the field of safety systems, which can solve problems such as extended delays, interruptions and errors, single beams or safety light curtains not working

Inactive Publication Date: 2002-08-07
LAZER SAFE PTY LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore in these cases individual light beams or safety light curtains do not work
[0009] Moreover, if a laser beam is used in the device, shocks can seriously distort the path of this laser beam, causing interruptions and errors during the operation of these devices
While the effects of vibrations can be reduced using software "filtering" or compensation, such as shown in International Application PCT / AU97 / 00005, this results in a delay between the interruption of the beam and the subsequent activation of the safety system and stopping the stamping lengthen

Method used

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Embodiment Construction

[0037] According to Fig. 1 at first, this industrial stamping machine safety system according to the present invention comprises: a laser emitting device 1, and this device has a laser emitter 2, such as a laser diode; The laser beam 3 emitted in 2 is transformed into a continuous planar laser beam 9 .

[0038] Figure 2 is a cross-sectional view of a continuous planar laser beam emitted by the security system according to the invention, before correction, along the line A-A in Figure 1 . This laser beam 9 has a substantially constant transverse width W along its length. Furthermore, the continuous planar laser beam 9 has a substantially constant thickness T. According to a possible configuration of the invention, the laser beam 9 has an average transverse width of about 50 mm and an average thickness of about 3 mm. The divergence angle of the laser beam 9 is preferably equal to or less than 0.1%. It will be appreciated that other configurations are possible, depending on th...

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Abstract

A safety system for an industrial press having a moveable section (30), the safety means including: a laser emitting means (1) for emitting a continuous planar laser beam (9) having a generally constant lateral width; a light receiving means (22) for receiving the laser beam and for detecting when an object intersects the laser beam; and a control means for stopping or preventing movement of the moveable section of the press when the receiving means detects that the laser beam has intersected an object.

Description

technical field [0001] The present invention relates generally to safety systems for use in industrial settings, and in particular to safety systems for industrial punching machines such as plate benders or paper cutters. Background technique [0002] The hazards associated with the operation of industrial presses necessitated the development of various safety devices to protect workers using these presses. Safety light curtain systems are commonly used to provide multiple parallel infrared (IR) beams that act as "obstacles" for the press. Interruption of either of the infrared beams by the press operator will cause the press to stop. However, these safety light curtains must be located at a considerable distance in front of the press in order to work effectively. This is because the divergence angle of the infrared beam over a distance limits the accuracy and speed of this light curtain. [0003] In British Patent No. 1307078 a light curtain guard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00B21D5/02B21D55/00B30B15/00F16P3/00F16P3/14G02B3/06H01L31/12
CPCB21D55/00B21D5/02F16P3/14F16P3/144
Inventor 罗伯特·M·阿普利亚德
Owner LAZER SAFE PTY LTD
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