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load detector

A detector and load technology, used in instruments, force measurement, tension measurement, etc., can solve the problem of inability to realize high-speed processing, and achieve the effects of small hysteresis, improved detection accuracy, and high vibration frequency.

Active Publication Date: 2020-08-07
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 diagram showing the installation structure of the load detector 5 according to the first embodiment of the present invention. figure 2 Is along figure 1 The sagittal cross-sectional view of line II-II, 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] In addition, 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. The same reference numerals are also 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 is figure...

Embodiment approach 2

[0109] Picture 20 It is a front view showing the load detector 5 according to the second embodiment of the present invention, Figure 21 Yes means Picture 20 An enlarged view of the spring portion 12.

[0110] The load detector 5 of the second embodiment is as Picture 20 As shown, there are two L-shaped spring portions 12 symmetrical with respect to a straight line passing through the load center A in the X-axis direction. The spring portion 12 extends from the outer peripheral portion of the load support portion 10 a to the outside in the radial direction, is bent at a 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 inner peripheral surface 13b of the outer ring. Thus, between the outer ring portion 11 and the spring portion 12, there is a region where the distance between the outer ring inner p...

Embodiment approach 3

[0119] Figure 22 It is a front view showing the load detector 5 according to Embodiment 3 of the present invention.

[0120] In the load detector 5 of the third embodiment, the outer ring portion 11 is a member independent of the inner ring portion 10 and the spring portion 12 and has a structure having two L-shaped spring portions 12.

[0121] The spring portion 12 extends in the radial direction from the outer peripheral portion of the load support portion 10 a, and is bent at a point B that is a bending point of the spring portion 12 to form an L-shape and is connected to the outer ring portion 11.

[0122] 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 is reduced, and the spring portion end 12a is fitted into the outer ring recess 11e and fixed by bolts or the like. Keep unit 8.

[0123] In addition, as long as the outer ring portion 11 and the spring por...

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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 that detects the tension of a web such as paper, cloth, film, metal foil, or wire material such as a cable. Background technique [0002] In the winding, printing, and processing steps of ribbons such as paper, cloth, film, and metal foil, in order to prevent problems such as wrinkles, flexure, and printing deviation, it is necessary to control the tension acting on the ribbons. The control of the tension is performed by detecting the tension acting on the ribbon as the load acting on the roller winding the ribbon. [0003] A load detector is used to detect the load acting on the roller. However, if the natural frequency of the load detector is low, there is a problem that the speed of the above-mentioned processing step cannot be increased due to the vibration accompanying the transportation of the belt. Therefore, a load detector with a high natural frequency is desired. For exa...

Claims

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Application Information

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Patent Type & Authority Patents(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