JP3106835U - Continuous measurement paper roll winding hardness measuring device - Google Patents

Abstract

[PROBLEMS] To measure the winding hardness of a wound paper, it is common to use a Schmitt hammer, which takes time and labor, with a hammering method using a wooden stick that relies on the feeling of the inspector, or by measuring discontinuities. there were.
By means of a hammer 3 that repeatedly strikes the paper roll surface and a function of measuring the deceleration until the hammer hits the surface of the paper roll 9 and stops, the movement direction of the hammer is measured. The hammer is moved while continuously striking it to measure the change in winding hardness in the width direction of the paper roll, and a change graph in the width direction of the paper roll is also drawn.
[Selection] Figure 1

Description

The present invention relates to a measuring instrument for the winding hardness of a wound paper roll.

Problems to be solved by conventional techniques and devices

Conventionally, paper produced as a product in the paper industry is wound up and shipped as a paper roll. However, if the winding is not uniform, a paper breakage accident may occur during rewinding, or a printing failure may occur during the printing process. To do. In order to prevent such accidents and malfunctions, it is necessary to inspect the winding uniformity by measuring the winding hardness of the paper roll before shipment in order to check the uniformity of the winding method of the paper roll. As a hardness measurement method, a hitting method in which a sound is heard by hitting with a wooden stick or a hardness measurement method using a Schmitt hammer is generally used, but the hitting method depends on the feeling of the inspector. The data will also be ambiguous. On the other hand, in the Schmitt hammer method, the inspector presses the tip of the hammer to the measurement position and compresses the spring and uses the force of the spring to measure the repulsive force when the hammer hits the object to be measured. It is discontinuous and takes time to measure.

Furthermore, in the Schmitt hammer method, the data at each measurement point is captured as a numerical value, but the measurement position is determined by the inspector with a sense, and there is a tendency to lack accuracy.

In the present invention, it is possible to continuously measure the winding hardness of the paper roll by moving the detection unit in the width direction of the paper roll, and to display the measurement result data in a graph corresponding to the width direction. The purpose is to.

Means for solving the problem

The present invention for solving the above problems will be described.
A hammer that repeatedly strikes the paper roll surface, and the deceleration until the hammer stops when it hits the paper roll surface, and measures the distance traveled by the hammer, allows the hammer to be repeatedly hit in the width direction of the paper roll. Then, the change in the winding hardness in the width direction of the paper roll is measured, and a change graph in the width direction of the paper roll is drawn together.

An embodiment of the present invention will be described with reference to FIG.

The paper roll 9 to be measured is continuously hit by a small hammer 3 that reciprocates continuously using the electromagnetic coil 1 and the spring 2.

A hammer position detector 4 for measuring the position of the small hammer 3 in reciprocating motion is installed close to the small hammer 3.

The deceleration calculation unit 5 takes in the position information of the small hammer 3 detected by the hammer position detection unit 4 and calculates the deceleration (minus acceleration) until the small hammer 3 hits the paper roll 9 and stops. Send to the data processor.

The distance traveled by the small hammer 3 is measured by the moving distance measuring unit 6 that counts the amount of movement of the small hammer 3 on the surface of the paper roll 9, and the moving distance data is sent to the data processing unit 7.

The data processing unit 7 stores the deceleration corresponding to the moving distance using the deceleration data from the hammer position detecting unit 4 and the moving distance data from the moving distance measuring unit 6.

Effect of device

These small hammer 3, hammer position detector 4, deceleration calculator 5, moving distance measuring unit 6, and a plurality of rollers 10 and a case as measuring head 8 so that they can be easily moved on the surface of paper roll 9. Integrate.

By moving this measuring head from one end to the other in the width direction of the paper roll and continuously measuring the deceleration in the width direction of the paper roll, the moving distance data obtained at the same time is measured. By using this, the data processor 7 can draw a graph of the deceleration change in the width direction.

Since the deceleration has a direct correlation with the hardness, the displayed graph shows the change in the winding hardness of the paper roll, it can be easily determined in a short time whether the winding hardness is uniform, and the measurement results are data processed Since it is stored in the department, it can be reused for inspection reports.

It is an Example of this invention. It is an example of a graph display by the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electromagnetic coil 2 Spring 3 Small hammer 4 Hammer position detection part 5 Deceleration calculation part 6 Movement distance measurement part 7 Data processing part 8 Measurement head 9 Paper roll 10 Roller

Claims (4)

In a device that measures the surface hardness of the wound paper (hereinafter referred to as “paper roll”), a small hammer is struck against the surface of the paper roll, and the position change until the hammer stops is measured. Then, the paper roll winding hardness measuring device is characterized by measuring the winding hardness of the paper roll by obtaining the deceleration. In a paper roll winding hardness measuring device, the paper roll winding is characterized by continuously measuring the hardness by hitting a small hammer against the paper roll while moving the surface of the paper roll with the hardness detector. Hardness measuring device. In the paper roll winding hardness measuring apparatus that continuously measures the hardness detection unit while moving the surface of the paper roll, the paper roll winding hardness measurement has a function of automatically detecting the moving distance of the detection unit. apparatus. In the paper roll take-up hardness measuring device that has the function of continuously measuring the hardness detection unit while moving the surface of the paper roll, and automatically detecting the movement distance of the detection unit, the roll width direction of the paper roll A paper roll winding hardness measuring apparatus that automatically displays a graph of the hardness measured corresponding to each position.

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