JPH0631409Y2 - Device for measuring the properties of sheet materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention is an apparatus for irradiating a traveling sheet-like substance such as paper with radiation or electromagnetic waves (for example, infrared rays) to measure characteristics of the sheet-like substance. Regarding

<Prior Art> For example, for a sheet-like substance such as paper in a papermaking process or a coating process of a paper manufacturing factory, it is necessary to measure characteristics such as moisture content of the substance in order to control the quality of the sheet-like substance. It has become extremely important.

Further, as a conventional example of an apparatus for measuring the characteristics of the sheet-shaped substance as described above, for example, an apparatus disclosed in Japanese Patent Publication No. 60-620 is known.

This apparatus comprises at least two optical systems having different degrees of association with a sheet-like substance, paper, detects a measurement optical signal and a reference optical signal for each optical system, and uses the signals to detect the paper. It is characterized by obtaining a signal corresponding to the water content of.

On the other hand, FIG. 3 is a diagram showing a general configuration of the apparatus as described above. In this figure, the vertical frames 1 and 2 and the horizontal frames 3 and 4 form an O-shaped frame 5. The horizontal frame 3 holds the first head 6, and the horizontal frame 4 holds the second head 7. While keeping these heads 6 and 7 facing each other,
Each of the first and second heads 6 and 7 is moved horizontally along the horizontal frames 3 and 4 on the paper surface of FIG.
And reciprocates between 6'and 7 '.

Also, the first and second heads 6, 7 (or 6 ',
The sheet-like substance 8 runs in a direction perpendicular to the paper surface of FIG. 3 in the gap formed by 7 ') facing each other.

Further, FIG. 4 is a view showing the detector surface forming the facing surfaces of the first and second heads 6 and 7.

In the figure, 10a and 10b are provided on the detector surface 9 along both edges parallel to the traveling direction of the sheet-like substance 8 (indicated by the arrow a), and the sheet-like substance is provided at the central portion of the detector surface 9. 8 is a convex portion forming a groove-shaped concave portion 101 parallel to the traveling direction (indicated by arrow a).

Reference numeral 11 is a window for irradiating or entering radiation or electromagnetic waves, the opening being disposed near the center of the recess.

12 is provided on one end side of the recess so that the longitudinal direction thereof is orthogonal to the traveling direction of the sheet-like substance 8 (indicated by the arrow a), and in cooperation with the recess 101, stains on the window 11 (paper dust or dust). A substantially rectangular air-purging cover that forms a spouting outlet for purging air for preventing the accumulation of dirt and the like) and purging dirt along the concave portion in the traveling direction of the sheet-like substance 8 (indicated by arrow a). is there.

Reference numeral 131 is a thermocouple that is provided on the other end side of the recess and detects the temperature of the purge air. (Because it is covered with a thermocouple cover described below, it is not shown.) The longitudinal direction of 13 is perpendicular to the traveling direction of the sheet-like substance 8 (indicated by arrow a) on the other end side of the recess. Provided, thermocouple 1
In order to protect 31, the thermocouple 131 is provided with a substantially rectangular cover for the thermocouple.

The direction of reciprocation of the first and second heads 6 and 7 is indicated by the arrow b.
Indicate.

FIG. 5 is an enlarged view showing a peripheral portion of the thermocouple cover 13 taken along the line AA ′ in FIG.

<Problems to be solved by the invention> However, in such a device, in FIG. 5, 14 is a side end portion of the sheet-like substance 8, and the sheet-like substance 8 is perpendicular to the paper surface of FIG. Direction (corresponding to the sheet material 8 traveling vertically on the paper surface of FIG. 3 in FIG. 3), the detector surface 9 and the like
It reciprocates in the left-right direction on the paper surface of FIG. 5 (indicated by arrow b) (in FIG. 3, it reciprocates between the first and second heads 6, 7 and 6 ', 7'). Equivalent to.).

In such an operating state, the sheet-like substance 8 is tensioned in the vertical direction on the paper surface of FIG. 5 in order to run, but the side end portion 14 of the sheet-like substance 8 is on the paper surface of FIG. In many cases, it will inevitably bend upwards or downwards.

There is a problem that the bent side end portion 14 of the sheet-shaped substance 8 is caught in the gap 15 formed by the thermocouple cover 13 and the convex portion 10 and is cut. The sheet-shaped substance 8 has, for example, a traveling speed of 600 m to 1
Since it runs at a high speed of 000 m / min, it can be easily cut even if it is slightly caught.

The same problem also occurs in the air purge cover 12.

The cover 12 for air purging cooperates with the recess to form the window 11
Since it is an air purging cover that prevents the accumulation of dirt on the surface of the sheet-like substance 8 and purges dirt along the concave portion in the traveling direction of the sheet-like material 8, the concave portion 1
It is necessary to project from the 01 plane.

Since the thermocouple cover 13 is provided so as to cover the thermocouple 131 in order to protect the thermocouple 131 that detects the temperature of the purging air from the air purging cover 12, it is protruding from the surface of the recess 101. There is a need.

Therefore, the occurrence of the above problems cannot be avoided.

The present invention solves this problem.

An object of the present invention is to prevent the sheet-like substance from being cut by being caught in the gap formed by the side edge of the sheet-like substance between the convex portion of the detector surface and the cover for the thermocouple or the cover for air purging. It is to provide a characteristic measuring device.

<Means for Solving the Problems> In order to achieve this object, the present invention moves the sheet-shaped substance in a direction wider than the width of the sheet-shaped substance in a direction orthogonal to the traveling direction of the sheet-shaped substance, Radiation or electromagnetic waves are radiated to the sheet-like substance through the window of the first head arranged facing the substance, and the reflected radiation or electromagnetic waves are incident through the window, or the sheet-like substance. In a characteristic measuring device for a sheet-shaped substance, the irradiated radiation or electromagnetic wave is incident through a window provided in a second head arranged to face each other so as to sandwich the sheet-shaped substance. At least one of the detector surfaces, which are the facing surfaces of the first and second heads, is provided along both edges parallel to the traveling direction of the sheet-like substance, and the sheath is provided at the central portion of the detector surface. Portion forming a groove-shaped concave portion parallel to the traveling direction of the particulate matter, a window for irradiation or incidence of radiation or electromagnetic waves having an opening near the central portion of the concave portion, and one end side of the concave portion Both ends of the longitudinal direction are provided so that the longitudinal direction is orthogonal to the traveling direction of the sheet-like substance and one surface thereof forms substantially the same plane as the surface of the convex portion so as not to hinder the traveling of the sheet-like substance. A portion which is embedded in the convex portion and which cooperates with the concave portion to prevent dirt from accumulating on the window and to purge the dirt in the traveling direction of the sheet-like substance along the concave portion. A substantially rectangular air purging cover to be formed, a thermocouple provided at the other end of the recess for detecting the temperature of the purging air, and a longitudinal direction of the sheet-like substance at the other end of the recess. Before being installed orthogonal to the running direction In order to protect the thermocouple, both ends in the longitudinal direction are embedded in the convex portion so that one surface constitutes substantially the same plane as the surface of the convex portion so as not to hinder the traveling of the sheet-like substance. A sheet-shaped substance characteristic measuring device comprising: a substantially rectangular thermocouple cover provided so as to cover the thermocouple.

<Operation> In the above configuration, the sheet-like substance continuously travels in one direction, and the head reciprocates in a direction orthogonal to the traveling direction of the sheet-like substance in a range wider than the width of the sheet-like substance.

Therefore, the side end portion of the sheet-like substance runs on the cover for the thermocouple or the cover surface for the air purge.

Hereinafter, detailed description will be given based on examples.

<Embodiment> FIG. 1 is an explanatory view of a main part configuration of an embodiment of the present invention.

In the figure, the same symbols as those in FIG. 4 represent the same functions.

Only parts different from FIG. 4 will be described below.

12 ′ is provided on one end side of the recess 101 so that the longitudinal direction thereof is orthogonal to the traveling direction of the sheet-shaped substance 8.
Of the convex portions 10a, 10 so as not to hinder the running of the vehicle.
Both end portions in the longitudinal direction are embedded in the convex portions 10a and 10b so as to form substantially the same plane as the surface of b, and in cooperation with the concave portion 101, accumulation of dirt on the window 11 is prevented and dirt is prevented. This is a substantially rectangular air purging cover that forms a jet port of purging air for purging in the traveling direction of the sheet-like substance 8 along the concave portion 101.

13 'is provided on the other end side of the recess 101 so that the longitudinal direction thereof is orthogonal to the traveling direction of the sheet-shaped substance 8.
Of the convex portions 10a, 10 so as not to hinder the running of the vehicle.
Both ends in the longitudinal direction are embedded in the protrusions 10a and 10b so as to form a plane substantially flush with the surface of the thermocouple 101.
Is a substantially rectangular cover for the thermocouple, which is provided to cover the thermocouple 101 in order to protect the thermocouple.

Further, FIG. 2 is an enlarged explanatory view showing a peripheral portion of the thermocouple cover 13 'in the AA cross section of FIG.

In the above configuration, the sheet-like substance 8 continuously runs in one direction in the vertical direction on the paper surface of FIG. 2 (indicated by an arrow a) (in FIG. 3, the sheet-like substance 8 is shown in FIG. 3). Of the detector surface 9 and the like reciprocally in the left-right direction on the paper surface of FIG. 2 (indicated by an arrow b) (in FIG. This corresponds to the reciprocal movement between the second heads 6, 7 and 6 ', 7'.).

Then, the heads 6 and 7 reciprocate in a range wider than the width of the sheet-like substance 8 in the direction orthogonal to the traveling direction of the sheet-like substance 8 (indicated by arrow b).

Therefore, the side end portion 14 of the sheet-like material 8 runs on the surface of the thermocouple cover 13 'or the air purge cover 12'.

However, the convex portions 10a, 10a, so that the longitudinal end portions of the air purging cover 12 'and the longitudinal end portions of the thermocouple cover 13' do not interfere with the traveling of the sheet-shaped material 8. It is buried in 10b.

As a result, the side end portion 14 of the sheet-like substance 8 is covered by the air purge cover 12 'or the thermocouple cover 13'.
There is no possibility of being caught in the gap formed by the convex portion 10, and the side end portion 14 of the sheet-shaped substance 8 is not caught in the gap and cut as in the conventional example.

In addition, the treatment of the detector surface as shown in FIG.
Although it is applied to both the head 6 and the second head 7, it may be applied to only one of the first head 6 and the second head 7.

<Effects of the Invention> As described above, according to the present invention, the sheet-like substance travels, and even when the side end portion of the sheet-like substance travels on the thermocouple cover or the air purge cover surface. The longitudinal end portions of the air purge cover and the longitudinal end portions of the thermocouple cover are embedded in the convex portions so as not to hinder the traveling of the sheet-shaped substance.

As a result, the side end portion of the sheet-like substance is not caught in the air purge cover or the gap formed by the convex portion with the cover for the thermocouple, and the side end portion of the sheet-like substance is caught in the gap. It will not be cut off.

Therefore, according to the present invention, the side edge of the sheet-like substance is not cut by being caught in the gap formed by the convex portion of the detector surface and the cover for the thermocouple or the cover for the air purge. It is possible to realize a device for measuring the characteristics of substances.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of the essential parts of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA ′ of FIG. 1, and FIG. FIG. 4 is a diagram illustrating a general configuration of the conventional example, FIG. 4 is a configuration explanatory view of a conventional example that is generally used in the past, and FIG.
It is an AA 'sectional view of a figure. 1, 2 ... Vertical frame, 3, 4 ... Horizontal frame, 5
... O-type frame, 6, 6 '... first head, 7,
7 '... second head, 8 ... sheet material, 10a,
10b ... Convex part, 11 ... Window, 12 '... Cover for air purge, 13' ... Cover for thermocouple, 14 ... Side end of sheet material.

Claims (1)

[Scope of utility model registration request] 1. A sheet-shaped substance is moved in a direction wider than a width of the sheet-shaped substance in a direction orthogonal to a traveling direction of the sheet-shaped substance, and a window of a first head disposed facing the sheet-shaped substance is used. The sheet-shaped material is irradiated with radiation or electromagnetic waves, and the reflected radiation or electromagnetic waves is incident through the window, or provided on a second head that is arranged to face the sheet-shaped material so as to sandwich the sheet-shaped material. In the characteristic measuring device for a sheet-shaped substance, which receives the irradiated radiation or electromagnetic wave through a window and measures the characteristic of the sheet-shaped substance, a detector surface, which is a facing surface of the first and second heads, A convex portion that is provided on at least one of the sheet-shaped substances along both edges parallel to the traveling direction, and that forms a groove-shaped concave portion parallel to the traveling direction of the sheet-shaped substance at the central portion of the detector surface, A window for irradiation or incidence of radiation or electromagnetic waves having an opening arranged near the center of the concave portion, and the sheet-like member provided with a longitudinal direction orthogonal to the traveling direction of the sheet-like substance on one end side of the concave portion. Both end portions in the longitudinal direction are embedded in the convex portion so that one surface constitutes substantially the same plane as the surface of the convex portion so as not to hinder the traveling of the substance, and to the window in cooperation with the concave portion. A substantially rectangular air-purging cover that forms an outlet for purging air that prevents the accumulation of dirt and purges dirt along the recess in the traveling direction of the sheet-like substance; and the other end side of the recess. A thermocouple for detecting the temperature of the purging air, and a longitudinal direction provided at the other end side of the concave portion orthogonal to the traveling direction of the sheet-like substance, which does not hinder the traveling of the sheet-like substance. One side is convex as above For a substantially rectangular thermocouple provided at both ends in the longitudinal direction so as to be substantially flush with the surface of the part and embedded in the convex portion to cover the thermocouple in order to protect the thermocouple. A sheet-like substance characteristic measuring device comprising: a cover.