CN216348395U - Device for measuring thickness of thin material - Google Patents

Abstract

The utility model relates to the technical field of sheet production, in particular to a device for measuring the thickness of a sheet. A device for measuring the thickness of a sheet material, comprising: the reference piece is used for winding the thin material to be measured on the peripheral surface; the distance measuring structure is arranged at a preset distance from the reference piece and used for respectively measuring a first distance from any point on the peripheral surface of the reference piece to the distance measuring structure and a second distance from the point to the distance measuring structure after the sheet to be measured is wound on the reference piece; and the processor is in signal connection with the ranging structure and is used for receiving the first distance and the second distance sent by the ranging structure so as to obtain the thickness of the thin material to be measured. The utility model solves the problem of low measurement precision caused by the tolerance of a reference part in manufacturing, and provides a device for measuring the thickness of a thin material.

Description

Device for measuring thickness of thin material

Technical Field

The utility model relates to the technical field of sheet production, in particular to a device for measuring the thickness of a sheet.

Background

In order to meet the market demand, manufacturers produce a large number of products with the length far greater than the thickness, but the thickness of the products is very small, and the precision requirement is difficult to achieve by using a conventional measuring method, so that the thickness measurement of thin materials becomes a difficult problem in enterprise production.

At present, in the thickness measurement field, an upper laser thickness gauge and a lower laser thickness gauge are arranged at the same position of a thin material, and the thickness of the thin material to be measured is obtained through comparison and conversion with a calibration block or a calibration membrane. The measuring device needs the thin material to be suspended, and tension changes exist, so that the thin material fluctuates up and down, and the measuring precision is influenced. In addition, a device for measuring the thickness of the product at a position right above the radial highest point of the roller by using a laser range finder is also provided, the thickness of the product to be measured is obtained by converting a laser signal into a thickness signal, and the circumferential surface of the roller is not a completely smooth arc surface due to the error of the roller during processing, so that the thicknesses of the same product at different positions are different.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is that the measurement precision of the sheet material in the prior art is not high, thereby providing a measurement device for the thickness of the sheet material.

In order to solve the above problems, the present invention provides a device for measuring a thickness of a sheet, comprising:

the reference piece is used for winding the thin material to be measured on the peripheral surface;

the distance measuring structure is arranged at a preset distance from the reference piece and used for respectively measuring a first distance from any point on the peripheral surface of the reference piece to the distance measuring structure and a second distance from the point to the distance measuring structure after the sheet to be measured is wound on the reference piece;

and the processor is in signal connection with the ranging structure and is used for receiving the first distance and the second distance sent by the ranging structure so as to obtain the thickness of the thin material to be measured.

Optionally, the range finder further comprises a mounting frame, and the range finder structure is arranged on the mounting frame.

Optionally, the ranging structure is slidably connected to the mounting frame.

Optionally, the distance measuring structure is provided in plurality at intervals along the axial direction of the reference member.

Optionally, a plurality of said ranging structures are mounted on said mounting frame at equal intervals.

Optionally, the reference member runs at the same linear speed as the sheet to be measured.

Optionally, the processor is any one of an encoder, a photosensor, a proximity sensor, or a light sensor.

Optionally, the reference member is a roller to which a drive structure is attached.

Optionally, the processor is mounted at one end of the central shaft of the roller.

Optionally, the drive structure is a servo motor.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a device for measuring the thickness of a thin material, which comprises a reference piece, a distance measuring structure and a processor, wherein the reference piece is used for winding the thin material to be measured on the peripheral surface, the distance measuring structure is arranged at a preset distance from the reference piece, and the processor is in signal connection with the distance measuring structure. The distance measuring structure is used for respectively measuring a first distance from any point on the peripheral surface of the reference piece to the distance measuring structure and a second distance from the point to the distance measuring structure after the thin material to be measured is wound on the reference piece, the distance between the distance measuring structure and the reference piece is set so as to accurately measure the first distance and the second distance, and the difference value of the first distance and the second distance is the thickness of the thin material to be measured. The device overcomes the defect that the thickness of the thin material is not accurate due to the tolerance of the reference piece in manufacturing because the first distance and the second distance of the same point of the peripheral surface of the reference piece are measured.

2. According to the device for measuring the thickness of the thin material, the mounting frame is provided with the slidable distance measuring structure, so that the distance measuring structure can measure the first distance and the second distance at different positions.

3. According to the device for measuring the thickness of the thin material, the plurality of distance measuring structures which are arranged at equal intervals along the axial direction of the reference piece can be used for simultaneously measuring the first distance and the second distance of a plurality of positions of the reference piece in the axial direction, measuring the thickness of a plurality of points of the thin material product at equal intervals in the same axial direction, and improving the accuracy of thickness measurement.

4. According to the device for measuring the thickness of the thin material, the reference part is the roller connected with the driving structure, the driving structure is the servo motor, the servo motor drives the roller and the reference part to rotate at a constant speed at the same preset speed, the continuous and equidistant first distance and second distance are obtained by the distance measuring structure, and errors in measurement are reduced.

5. The device for measuring the thickness of the thin material, provided by the utility model, is arranged on the processor at one end of the central shaft of the roller, and is conveniently connected with a distance measuring structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a device for measuring the thickness of a thin material according to an embodiment of the present invention;

description of reference numerals: 1-a processor; 2-a mounting rack; 3-a ranging structure; 4-a reference member.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

One embodiment of the apparatus for measuring the thickness of a sheet material as shown in fig. 1 comprises a reference member 4 having a circumferential surface for winding the sheet material to be measured, a distance measuring structure 3 disposed at a predetermined distance from the reference member 4, and a processor 1 in signal connection with the distance measuring structure 3.

The reference member 4 is a roller, and the sheet to be measured is wound along the axial direction of the roller, and the sheet products are conveyed at different speeds. The roller is connected with drive structure, and is specific, drive structure is servo motor, provides the power of uniform velocity rotation for the roller.

One side of roller is equipped with mounting bracket 2, and mounting bracket 2 has range finding structure 3 towards one side sliding connection of roller, and range finding structure 3 can carry out equidistant slip on mounting bracket 2 along the axial of roller. In particular, the distance measuring structure 3 is a non-contact distance measuring member, such as a laser distance meter. The laser distance measuring instrument can be connected with the stepping motor, when the roller rotates for a certain angle, the laser distance measuring instrument moves for a unit distance along the axial direction of the roller, and the laser distance measuring instrument measures the distance between the roller and the point.

The processor 1 is mounted at one end of the central shaft of the roll. In particular, the processor 1 is a position sensor, for example a photoelectric sensor. The photoelectric sensor is in signal connection with the laser range finder and is used for receiving and storing a first distance sent by the laser range finder before the roller winds the sheet to be detected; and after the roller winds the sheet to be measured, the roller is used for receiving and storing a second distance sent by the laser range finder, the first distance and the second distance correspond to the same point of the peripheral surface of the roller, and the difference value of the first distance and the second distance is calculated to obtain the thickness of the sheet to be measured.

Fixing the laser range finder above the roller, setting an initial position, after the roller rotates a preset value at a preset speed under the drive of the servo motor, enabling the laser range finder to move on the mounting rack 2 at equal intervals along the axial direction of the roller, measuring a first distance from a point to the laser range finder after the laser range finder moves one interval in the axial direction, and sending the first distance to the photoelectric sensor, wherein the photoelectric sensor records the first distance. And repeating the steps until the roller rotates once, and recording and storing a preset value of each rotation of the roller and a first distance of each point after the roller moves for a preset distance in the axial direction by the photoelectric sensor.

The method comprises the steps that a thin material is wound on the circumferential surface of a roller, the initial position when the thin material to be measured is not wound is taken as a starting point, the roller rotates at the same preset speed for the same time, a laser range finder moves on an installation frame 2 at the same equal interval along the axial direction of the roller, the laser range finder measures the second distance from a point to the laser range finder after moving one interval in the axial direction, the second distance is sent to a photoelectric sensor, the photoelectric sensor calculates the difference value between the corresponding second distance and the first distance, and the average value is calculated to obtain the thickness of the thin material to be measured.

Alternatively, the number of the distance measuring structures can be two or more, and the distance measuring structures are arranged on the mounting frame at equal intervals and used for simultaneously measuring the distance between two or more grids on the same axial surface of the reference member and the distance between the two or more grids.

As an alternative embodiment, the distance measuring structure may also be a microwave distance meter for measuring the first and second distances.

As an alternative embodiment, the processor may also be any of an encoder, a proximity sensor or a light sensor.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims (10)

1. A device for measuring the thickness of a sheet, comprising:

the reference piece (4) is used for winding the sheet to be measured on the peripheral surface;

the distance measuring structure (3) is arranged at a preset distance from the reference piece (4) and used for respectively measuring a first distance from any point on the peripheral surface of the reference piece (4) to the distance measuring structure (3) and a second distance from the point to the distance measuring structure (3) after the sheet to be measured is wound on the reference piece (4);

and the processor (1) is in signal connection with the ranging structure (3) and is used for receiving the first distance and the second distance sent by the ranging structure (3) so as to obtain the thickness of the thin material to be measured.

2. A device for measuring the thickness of a sheet as claimed in claim 1, further comprising a mounting frame (2), said distance measuring structure (3) being arranged on said mounting frame (2).

3. Device according to claim 2, characterized in that said distance measuring structure (3) is slidingly associated with said mounting frame (2).

4. A device for measuring the thickness of a sheet as claimed in claim 2, wherein said distance-measuring structures (3) are arranged in plurality at intervals along the axial direction of said reference member (4).

5. A device for measuring the thickness of thin sheets as claimed in claim 3, characterized in that a plurality of said distance measuring structures (3) are mounted on said mounting frame (2) at equal intervals.

6. A device for measuring the thickness of a sheet as claimed in claim 1, wherein said reference member (4) operates at the same linear speed as the sheet to be measured.

7. A device for measuring the thickness of a sheet as claimed in any one of claims 1 to 6, wherein the processor (1) is any one of an encoder, a photoelectric sensor, a proximity sensor or a light sensor.

8. A device for measuring the thickness of a sheet as claimed in any one of claims 1 to 6, wherein the reference member (4) is a roller to which a drive mechanism is connected.

9. A device for measuring the thickness of a sheet as claimed in claim 8, wherein the processor (1) is mounted at one end of the central axis of the roll.

10. A device for measuring the thickness of a sheet material as claimed in claim 8, wherein the drive structure is a servo motor.

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