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Safety device and preliminary action determination method

A technology of preparatory actions and safety devices, which is applied in the direction of engineering safety devices, safety equipment, maintenance and safety accessories, etc., can solve the problems of the possibility of wrong sliding parts stopping, the increase of height, the decrease of operating efficiency, etc., and achieve the goal of high-precision detection Effect

Inactive Publication Date: 2013-04-17
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, there is a problem that the possibility of stopping the slider by mistake becomes high, so that the operation efficiency is lowered.

Method used

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  • Safety device and preliminary action determination method
  • Safety device and preliminary action determination method
  • Safety device and preliminary action determination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0088] The safety device 10 according to the first embodiment determines that the operator is performing a preparatory movement before a dangerous movement in which a part of the upper body enters a dangerous area. However, in this embodiment, the case where the machine which has a work part is a machine tool (press machine) is demonstrated as an example.

[0089] Figure 4 It is a block diagram of the security device 10 in Embodiment 1. Such as Figure 4 As shown, the security device 10 includes a posture acquisition unit 201 , a preparatory action definition storage unit 202 , a preparatory action determination unit 203 , an infrared sensor 204 , an entry detection unit 206 , and a safe operation control unit 208 . Figure 4 Also shown is the working part 209 of the machine tool.

[0090] The posture acquisition unit 201 acquires posture data representing the posture of at least a part of the operator's lower body. In the present embodiment, the posture data includes the...

Embodiment approach 2

[0165] The safety device 10 in Embodiment 2 also determines whether a preparatory movement is being performed using the distance between the work area and the operator, the direction of the operator's body, and the size of the operator's body. Accordingly, the safety device 10 can accurately determine whether or not to perform a preparatory operation even in a machine tool that handles a large machining target. Hereinafter, the security device 10 in this embodiment will be described with reference to the drawings.

[0166] Figure 12 A scene in which the operator 100 sets the object W to be processed at the press position is shown. Such as Figure 12 As shown, in this embodiment, compared with Embodiment 1, the area of ​​the pressure sensing chip 311 is larger. That is, the pressure sensor sheet 311 can measure a wide range of pressure.

[0167] Figure 13 It is a block diagram of the safety device 10 of the machine tool in Embodiment 2. Among them, in Figure 13 In the...

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Abstract

A safety device (10) is a safety device (10) for a machine having an operating part (209) that processes or moves an article being operated on. The safety device is provided with a posture acquisition unit (201) that acquires posture data showing at least part of the posture of the lower half of an operator's body and a preliminary action determination unit (203) that determines that a preliminary action that leads to a dangerous action where at least part of the upper half of the operator's body approaches an operating area is occurring when a change in the posture shown by the posture data shows movement of the center of gravity of the operator's body toward separation from the operating area of the operating part (209) without moving the position of either foot.

Description

technical field [0001] The present invention relates to a safety device and a preparatory action determination method for preventing accidents such as an operator's body getting involved in a working part during operation of a machine having a working part. Background technique [0002] The stamping machine that stamps the processing object requires safe operation. For example, a technique is required for stopping the press machine when it is detected that a part of the operator's body enters an area (dangerous area) where a working portion of the press machine works. [0003] Figure 1A as well as Figure 1B An example of the working part of the electric press machine of patent document 1 is shown. Figure 1A It is the front view of the working part of the electric press machine. in addition, Figure 1B It is the left side view of the working part of the electric press machine. [0004] An upper mold 7 is attached to the upper slider 3 , and a lower mold 9 is attached t...

Claims

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Application Information

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IPC IPC(8): B21D5/02B23Q11/00B30B15/00F16P3/12
CPCB21D5/02B21D55/00B30B15/285F16P3/12
Inventor 加藤弓子小泽顺
Owner PANASONIC CORP
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