DEVICE FOR DETECTING THICKNESS AND THICKNESS VARIATION OF A SHEETLIKE OBJECT

Abstract

A device for detecting thickness and thickness variation of a sheetlike object, includes at least a first guiding component and a plurality of second guiding components, deviation between the first guiding component and the second guiding components occurs while the sheetlike object passed through among the first guiding component and those second guiding components; a elastic member, having a first elastic displacement end, a second elastic displacement end and a elastic member fixed surface, both of the first elastic displacement end and the second elastic displacement have a plane disposed thereto and served to connect with each side of a movable elastic member, while the elastic member fixed surface is to fix the elastic member; and a displacement sensor is configured to detect a displacement of a side face on the first elastic displacement end. The present invention has the ability to raise the accuracy of the thickness and thickness variation detection.

Claims

1. A device for detecting thickness and thickness variation of a sheetlike object, includes: at least a first guiding component and a plurality of second guiding components, wherein the second guiding components are opposite of first guiding component, and the second guiding components are arranged in line, a deviation between the first guiding component and the second guiding components occurs while the sheetlike object passed through the first guiding component and those second guiding components, due to the thickness variation of the sheetlike object; a elastic member, having a first elastic displacement end, a second elastic displacement end and a elastic member fixed surface, both of the first elastic displacement end and the second elastic displacement have a plane disposed thereto and served to connect with each side of a movable elastic member, while the elastic member fixed surface is to fix the elastic member; and a displacement sensor is configured to detect a displacement of a side face on the first elastic displacement end, and the displacement sensor is located in a fixed place, wherein the first elastic displacement end and the second elastic displacement end go upside and downside deviation relative to the second guiding components; wherein the movable elastic member is used for fixing the first elastic displacement end, so as to keep the shape of the side face without bending or inclined deformation, the side face is having a parallel displacement relative to the first elastic displacement end, and the side face is having a parallel displacement relative to the displacement sensor without any angular displacement.

2. The device of claim 1, wherein the first guiding component and the second guiding components are rollers, the rollers of the second guiding components and the rollers of the first guiding component and are parallel arranged.

3. The device of claim 1, wherein the elastic member is an electric conductor, and the side face is an electric conductor face.

4. The device of claim 1, wherein the first elastic displacement end and the second elastic displacement end of the elastic member are directly or indirectly rigidly connected with the second guiding component respectively, and the displacement of the second guiding component induce the displacement of the first elastic displacement end and the second elastic displacement end synchronously.

5. The device of claim 1, wherein the first guiding components are arranged side by side, and the first guiding components and the second guiding components compose component pairs respectively.

6. The device of claim 1, wherein the displacement sensor includes a plurality of flat coils, and the second guiding components are having another flat coils respectively, and an component is set up for inspiring the flat coils to generate alternating magnetic field.

7. The device of claim 1, which further comprises an arithmetic unit used for calculating the effect of the side face of first elastic displacement end on the alternating magnetic field of flat coils.

8. The device of claim 6, wherein the flat coils are air-cored coils.

9. The device of claim 8, wherein the side face in alternating magnetic field of flat coils existing area is not having any other magnetic material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 shows the schematic diagram of the device for detecting thickness and thickness variation of prior art.

[0016] FIG. 2 shows another schematic diagram of the device for detecting thickness and thickness variation of prior art.

[0017] FIG. 3 shows the schematic diagram of the device for detecting thickness and thickness variation of the first example.

[0018] FIG. 4 shows another schematic diagram of the device for detecting thickness and thickness variation of the first example.

[0019] FIG. 5 shows the schematic diagram of the device for detecting thickness and thickness variation of the second example.

[0020] FIG. 6 shows another schematic diagram of the device for detecting thickness and thickness variation of the second example.

DETAILED DESCRIPTION OF THE INVENTION

[0021] The following descriptive embodiments and the corresponding figures and symbols in the embodiments are illustrative description for the examiners of USPTO and the persons skilled in the art to understand the spirit of the present invention completely.

[0022] The first example of the present invention was shown in FIG. 3 and FIG. 4, which showed a device 100 for detecting thickness and thickness variation of a sheetlike object 200, includes: at least a first guiding component 1 and a plurality of second guiding components 2, wherein the second guiding components 2 are opposite of first guiding component 1, and the second guiding components 2 are arranged in line, a deviation between the first guiding component 1 and the second guiding components occurs while the sheetlike object 200 passed through the first guiding component 1 and those second guiding components 2, due to the thickness variation of the sheetlike object 200; a elastic member 3, having a first elastic displacement end 31, a second elastic displacement end 32 and a elastic member fixed surface 33, both of the first elastic displacement end 31 and the second elastic displacement 32 have a plane disposed thereto and served to connect with each side of a movable elastic member 34, while the elastic member fixed surface 33 is to fix the elastic member 3; and a displacement sensor 4 is configured to detect a displacement of a side face 35 on the first elastic displacement end 31, and the displacement sensor 4 is located in a fixed place, wherein the first elastic displacement end 31 and the second elastic displacement end 32 go upside and downside deviation relative to the second guiding components 2; wherein the movable elastic member 34 is used for fixing the first elastic displacement end 31, so as to keep the shape of the side face 35 without bending or inclined deformation, the side face 35 is having a parallel displacement relative to the first elastic displacement end 31, and the side face 35 is having a parallel displacement relative to the displacement sensor 4 without any angular displacement. (As shown in FIG. 4)

[0023] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the first guiding component 1 and the second guiding components 2 are rollers, the rollers of the second guiding components 2 and the rollers of the first guiding component 1 and are parallel arranged.

[0024] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the elastic member 3 is an electric conductor, and the side face 35 is an electric conductor face.

[0025] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the first elastic displacement end 31 and the second elastic displacement end 32 of the elastic member are directly or indirectly rigidly connected with the second guiding component 2 respectively, and the displacement of the second guiding component 2 induce the displacement of the first elastic displacement end 31 and the second elastic displacement 32 end synchronously. (As shown in FIG. 4)

[0026] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the first guiding components 1 are arranged side by side, and the first guiding components 1 and the second guiding components 2 compose component pairs respectively.

[0027] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the displacement sensor 4 includes a plurality of flat coil 41, and the second guiding components 2 are having another flat coil 41 respectively, and a component is set up for inspiring the flat coils 41 to generate alternating magnetic field.

[0028] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, further comprises an arithmetic unit 42 used for calculating the effect of the side face 35 of first elastic displacement end 31 on the alternating magnetic field of flat coils 41.

[0029] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the flat coils 41 are air-cored coils.

[0030] Preferably, in the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, the side face 35 in alternating magnetic field of flat coils 41 existing area is not having any other magnetic material.

[0031] In the first example of the present invention, device 100 for detecting thickness and thickness variation of a sheetlike object 200, wherein the elastic membrane 3 is having two surfaces on the first elastic displacement end 31 and the second elastic displacement end 32 connected with both sides of movable elastic member 34 (please refer to FIG. 3 and FIG. 4), wherein the elastic member 3 is forming a U shape and having two curve generally, and the first elastic displacement end 31 and the second elastic displacement end 32 is fixed on the side of movable elastic member 34 respectively.

[0032] The second example of the present invention is shown as FIG. 5 and FIG. 6, which is a device 100 for detecting thickness and thickness variation of a sheetlike object 200. The difference between example 1 and example 2 is the shape of elastic membrane 3. In the elastic member 3 of example 2, the U shape of elastic membrane 3 is having a extension segment on one end and forming three curves. The first elastic displacement end 31 and the second elastic displacement end 32 connected with both vertical sides of movable elastic member 34, which could keep the shape of the side face 35 without bending or inclined deformation, the side face 35 is having a parallel displacement relative to the first elastic displacement end 31, and the side face 35 is having a parallel displacement relative to the displacement sensor 4 without any angular displacement. (As shown in FIG. 5 and FIG. 6)

[0033] Although the present invention has been described in terms of specific exemplary embodiments and examples, it will be appreciated that the embodiments disclosed herein are for illustrative purposes only and various modifications and alterations might be made by those skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.