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Load detector

A technology for detectors and loads, which is applied in the directions of instruments, force measurement, and tension measurement, etc. It can solve problems such as the inability to realize high-speed processing procedures, and achieve the effects of small hysteresis, high vibration frequency, and improved detection accuracy

Active Publication Date: 2018-08-31
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A load detector is used to detect the load acting on the roller, but if the natural vibration frequency of the load detector is low, there is a problem that the speed-up of the above-mentioned processing process cannot be achieved due to the vibration accompanying the transfer of the strip.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0043] figure 1 It is a figure which shows the installation structure of the load detector 5 concerning Embodiment 1 of this invention, figure 2 is along figure 1 The sagittal sectional view of the II-II line, image 3 yes means figure 1 Front view of the load detector 5, Figure 4 yes means figure 1 Oblique view of the holding unit 8.

[0044] also, figure 1 The X-axis direction is set as the width direction of the load detector 5, the Y-axis direction is set as the height direction of the load detector 5, and the Z-axis direction is set as the depth direction of the load detector 5, and the same symbols are used in the following figures . The load detected by the load detector 5 acts in the -Y direction.

[0045] The load detector 5 of this embodiment is fixed to the mounting member 7 , and detects the load F acting in the Y-axis direction of the load detector 5 via the roller core 3 .

[0046] The load F acting on the load detector 5 such as figure 2 , is the...

Embodiment approach 2

[0110] Figure 20 It is a front view showing the load detector 5 according to Embodiment 2 of the present invention, Figure 21 yes means Figure 20 An enlarged view of the spring portion 12 of .

[0111] The load detector 5 of this embodiment 2 is as Figure 20 As shown, there are two L-shaped spring portions 12 symmetrical to a straight line passing through the load center A in the X-axis direction. The spring portion 12 extends radially outward from the outer peripheral portion of the load supporting portion 10a, is bent at point B which is a bending point of the spring portion 12, forms an L-shape, and is connected to the outer ring portion 11. A gap is formed in the radial direction of the outer ring portion 11 between the spring portion 12 and the outer ring inner peripheral surface 13b. Thereby, between the outer ring portion 11 and the spring portion 12, there is a region where the distance between the outer ring inner peripheral surface 13b of the outer ring porti...

Embodiment approach 3

[0120] Figure 22 It is a front view showing the load detector 5 according to Embodiment 3 of the present invention.

[0121] In the load detector 5 according to Embodiment 3, the outer ring portion 11 is a member independent from the inner ring portion 10 and the spring portion 12 , and has a structure having two L-shaped spring portions 12 .

[0122] The spring portion 12 extends radially from the outer peripheral portion of the load supporting portion 10a, is bent at point B which is a bending point of the spring portion 12, forms an L-shape, and is connected to the outer ring portion 11.

[0123] The spring portion end 12a is provided at a position where the distance b between the flat portion 12b of the spring portion 12 and the load center A in the X-axis direction becomes smaller, and the spring portion end 12a is fitted into the outer ring recessed portion 11e and fixed with a bolt or the like. Hold unit 8.

[0124] In addition, as long as the outer ring portion 11 a...

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Abstract

This load detector is provided with: a holding unit which comprises an inner ring part holding a shaft that supports a load, an outer ring part that is provided so as to surround the inner ring part and that is fastened to a mounting member by a fastening member through a plurality of mounting holes formed at intervals in a circumferential direction, and a spring part that is connected to the outer ring part at a spring part end radially extending from the inner ring; and a displacement detection unit which detects displacement of the inner ring part caused by a load. A mounting fixation portion which is a joint surface, of the fastening member, relative to the outer ring part is disposed at the circumferential edge of each of the mounting holes. In the outer ring part, a low-rigidity portion is formed between the mounting hole and the spring part end, and the low-rigidity portion has bending rigidity, in the circumferential direction, lower than that of other portions of the outer ring part.

Description

technical field [0001] The present invention relates to a load detector applied to a tension detector or the like for detecting tension of a web such as paper, cloth, film, or metal foil, or a wire such as a cable. Background technique [0002] In winding, printing, and processing of strips of paper, cloth, film, and metal foil, it is necessary to control the tension applied to the strips in order to prevent problems such as wrinkling, warping, and printing deviation. The control of the tension is performed by detecting the tension acting on the web as a load acting on a roller that winds the web. [0003] A load detector is used to detect the load acting on the roller. However, if the natural vibration frequency of the load detector is low, there is a problem that the speed-up of the above processing process cannot be achieved due to the vibration accompanying the transfer of the web. Therefore, a load detector with a high natural frequency is desired. For example, a load ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/10G01L1/14G01L1/26
CPCG01L1/14G01L1/26G01L5/10
Inventor 濑良雅也角谷治彦石本大辅熊本修一武原健治
Owner MITSUBISHI ELECTRIC CORP