JP7044042B2 - Microfloating matter measuring device and its measuring system - Google Patents

Description

The present invention relates to a micro-floating material measuring device that acquires information according to the amount of floating micro-materials suspended in the air, and a measuring system thereof.

When manufacturing, transporting, using, etc., fine objects may be generated due to rubbing or the like. The degree of generation of these minute substances varies depending on the characteristics of the article to be handled and the compatibility with the object to be rubbed, but it is not preferable for the minute substances to float and accumulate in various environments. It is necessary to modify the ingredients and processes. It is difficult to measure the amount of these minute substances generated, and various attempts have been made.

For example, Patent Document 1 describes a paper dust generation inspection method for measuring the amount of paper dust (fine substances) generated when pulling out from a so-called tissue box in order to use thin paper (tissue paper). There is. In this inspection method, the tissue box is placed sideways on the collection mount so that the outlet for the thin paper is located on the side, and the thin paper is pulled out repeatedly under predetermined conditions to generate paper dust. After that, the amount of paper dust accumulated after floating on the collection mount is measured.

Japanese Unexamined Patent Publication No. 2015-139661

However, in the measurement of minute floating matter as described in Patent Document 1, it is necessary to pay close attention not to disturb the space where the fine matter floats, and the floating fine matter is a mount for measurement. You have to wait until you descend to. Therefore, such a measurement method is not suitable for rapidly measuring the floating amount of a minute substance and repeating review and improvement.

Therefore, an object of the present invention is to provide a measuring device for a minute suspended matter capable of measuring information according to the amount of suspended matter in the minute matter without waiting for the accumulation, and a measuring system thereof.

One aspect of the invention of the micro-suspended matter measuring device that solves the above-mentioned problems is a measuring device that is installed in a space where the micro-floating matter is suspended and acquires information about the micro-floating matter, and emits a predetermined amount of measured light. A light emitting unit and a light receiving unit that receives the measured light of the light emitting unit are provided, and the measured light emitted by the light emitting unit is received through the floating space of the minute object according to the amount of received light of the measured light. It is characterized by having an output unit that acquires information from the light receiving unit and outputs the information.

One aspect of the invention of the microfloating matter measuring system that solves the above-mentioned problems is characterized in that the above-mentioned microfloating matter measuring device is installed as the fine matter during the manufacturing process of a paper product in which paper dust is suspended. It is something to do.

As described above, according to one aspect of the present invention, the received light amount of the measurement light transmitted through the floating space changes according to the floating amount of the minute matter floating in the space. Therefore, the received light amount of the measured light can be acquired as information according to the floating amount of the minute object.

Therefore, it is possible to realize and provide the measurement of the fine suspended matter that can measure the information on the suspended amount of the fine matter without waiting for the generated fine matter to be deposited.

FIG. 1 is a conceptual configuration diagram showing a schematic overall configuration of a microfloating matter measuring device according to an embodiment of the present invention and the measuring system thereof. 2A and 2B are views for explaining the projection / light reception and reflection of the measured light, FIG. 2A is a plan view of the emission surface / light receiving surface, and FIG. 2B is a plan view of the reflection surface. FIG. 3 is an elevational view illustrating the arrangement of the main body portion and the reflective portion. FIG. 4 is an elevation view illustrating the arrangement in the manufacturing process. FIG. 5 is a plan view illustrating the arrangement in the manufacturing process. FIG. 6 is a graph comparing the measurement results of the amount of suspended paper dust. FIG. 7 is an elevation view illustrating another example of the arrangement position of the measuring device in the manufacturing process. FIG. 8 is an elevational view illustrating another example of the arrangement of the measuring device in the manufacturing process.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 6 are diagrams illustrating a measuring device for minute suspended matter according to an embodiment of the present invention and a measuring system thereof.

In FIGS. 1 to 3, the measuring system 100 is constructed by a measuring device 10 installed on a pedestal portion 31 so that the main body portion 11 and the reflecting portion 21 have a fixed relative positional relationship. At least one set in which the amplifier unit 51 is connected to the main body 11 of the 10 is arranged and configured in the measurement target space Ar described later.

The main body 11 has a light projecting unit (light emitting unit) 13 that emits and emits parallel light having a predetermined amount of light such as laser light (hereinafter referred to as measurement light ML) and projects the light onto an object, and a light projecting unit 13. A light receiving unit 15 that receives the measurement light ML returning from the measurement target via the measurement target is integrally built in the housing. The main body 11 is manufactured so that the exit surface 13a that emits the measurement light ML of the light projecting unit 13 and the light receiving surface 15a that receives the measurement light ML of the light receiving unit 15 are located on the same surface.

The reflecting unit 21 includes a reflecting surface (reflecting plate) 21a that reflects the measurement light ML input from a predetermined direction, and the measurement light ML emitted from the emission surface 13a of the light projecting unit 13 is transmitted to the reflection surface 21a. It is installed so as to have a positional relationship in which light is received and reflected on the light receiving surface 15a of the light receiving unit 15.

The pedestal portion 31 includes a first installation base 33 in which the main body portion 11 is installed at the tip, a second installation base 35 in which the reflection portion 21 is installed at the tip, and these first and second installation bases 33 and 35. Is provided with a base 37 installed in an environment where a measurement target exists while maintaining and fixing the tip in an upright posture so that the tips are separated from each other at predetermined intervals and face each other. The pedestal portion 31 has a relative positional relationship in which the emission surface 13a and the light receiving surface 15a are separated from the reflection surface 21a at predetermined intervals of the length of the base 37 at the tips of the first and second installation tables 33 and 35 and are substantially orthogonal to each other. The main body portion 11 and the reflection portion 21 are fixed so as to be.

The amplifier unit 51 includes a power supply unit 53 that converts a commercial alternating current power source (AC) into a direct current power source (DC), and functions as a power source for the connected main body unit 11, thereby causing the light projecting unit 13 and the light receiving unit. Along with the light emission and emission of the measurement light ML by 15, the light input / reception of the measurement light ML that has passed (transmitted) through the measurement target space Ar is realized.

The amplifier unit 51 includes a liquid crystal display (display unit) 55, and the liquid crystal display 55 receives a light receiving signal corresponding to the amount of light of the measurement light ML that is received and output by the light receiving unit 15 of the main body 11. The information on the amount of received light after amplification is displayed and output.

As a result, the measurement system 100 is turned on to the amplifier unit 51, and the measurement light ML emitted from the light projecting unit 13 of the main body 11 is reflected by the reflection unit 21 and received by the light receiving unit 15, so that the measurement target is received. It is possible to acquire the change in the amount of light of the measurement light ML that reciprocates the space Ar, and to grasp the characteristics of the measurement target space Ar that causes the change in the amount of light in the measurement light ML.

For example, in this measurement system 100, a measuring device 10 is installed in a space Ar where minute objects are suspended in the air, and when the power is turned on to the amplifier unit 51, the measurement emitted by the light projecting unit 13 of the main body 11 is performed. The acquired information when the light ML is reflected by the reflecting unit 21 and received by the light receiving unit 15 can be displayed and output on the liquid crystal display 55, and the data corresponding to the amount of floating minute objects in the measurement target space Ar can be displayed and output. Can be collected.

Here, the measuring device 10 of the present embodiment is, for example, a sensor manufactured by KEYENCE CORPORATION, which includes a retroreflective sensor head (LV-S62) in a parallel light area provided with a reflector (R-6L) and an amplifier unit. It can be constructed using (NPN LV-N11N). In this embodiment, a case where the main body portion 11 (light emitting portion 13 and light receiving portion 15) is installed at a position where the measurement target space Ar is sandwiched between the reflecting portion 21 will be described as an example, but the present invention is limited to this. is not it. For example, the measurement target space Ar is laid out so as to sandwich the measurement target space Ar between the separate light emitting unit and the light receiving unit without using the reflection unit, and the measurement light projected by the projection unit passes through the measurement target space Ar. It may be fixed so that the light is received by the light receiving portion. Further, by laying out the reflection unit so that the measurement target space Ar is interposed between the separate light projecting unit and the light receiving unit, the measurement light projected by the projection unit is measured in the measurement target space Ar. After being reflected by the reflecting unit through the optical path inside, the light may be fixed so as to be received by the light receiving unit via another optical path in the measurement target space Ar.

In this measurement system 100, paper dust (fine matter) is generated in the manufacturing process of thin paper (paper product) and easily floats in the work environment. Therefore, for example, as shown in FIG. 4, tissue paper (thin paper) T The measuring device 10 is installed in the working environment for executing the manufacturing process of the above, and is constructed so as to measure the amount of suspended paper dust. In the manufacturing process of this tissue paper, one thin paper p wound in a roll shape is pulled out from each of the two primary raw fabric rolls r on the upstream side and laminated in two layers by a laminating roller L, so-called. After processing to form a 2-ply form, the double tissue paper T is wound into a roll on the downstream side to form a secondary raw fabric roll R.

Specifically, as shown in FIGS. 4 and 5, in the measuring device 10, two sets of pedestal portions 31 are arranged so as to be located on both sides of the laminated roller L in the axial direction, and the first and first pedestals 31 thereof are arranged. 2 The base 37 is fixed so as to separate the installation bases 33 and 35 in the transfer direction of the thin paper p. In this case, in the measuring device 10, the main body portion 11 and the reflecting portion 21 are located on the upstream side and the downstream side of the laminated roller L, and the working spaces on both sides of the laminated roller L in the axial direction are set as the measurement target space Ar. It is arranged like this.

In this measuring device 10, a predetermined measurement light ML is projected from the light projecting unit 13 of the main body 11 toward the reflecting unit 21, and the measured light ML reflected by the reflecting unit 21 is received by the light receiving unit of the main body 11. It is installed so as to receive light at 15. Therefore, when the power is turned on, the amplifier unit 51 reciprocates the measured light ML between the light emitting unit 13 and the light receiving unit 15 of the main body 11 and the reflecting unit 21 sandwiching the measurement target space Ar. It is possible to project, reflect, and receive light), and information corresponding to the amount of received light of the measurement light ML passing through the measurement target space Ar can be displayed and output to the liquid crystal display 55. For this reason, in the measurement system 100, in the manufacturing process shown in FIG. 4, for example, a product evaluation test or an environmental improvement test in which the manufacturing conditions and laminating conditions of thin paper p with a small amount of paper dust generated (floating amount) are changed. It can contribute to the efficient execution of such things.

Therefore, in the measurement system 100, for example, when performing an improvement test of a 2-ply tissue paper (paper product) T, first, the primary raw fabric roll r and the secondary raw fabric roll R are not set (without rotation). By turning on the power to the amplifier unit 51 in the blank state (which may not be a transfer operation), environmental data corresponding to the amount of paper dust floating displayed and output on the liquid crystal display 55 is acquired. Based on this, for the purpose of improving the characteristics of the thin paper p, it is possible to acquire test data according to the amount of paper powder suspended in the test products 1 to 5 when predetermined conditions such as increasing or decreasing the contained components are applied.

As a result, in the blank state, the paper dust is not suspended, and the measurement light ML emitted / projected from the light projecting unit 13 of the main body 11 of the measuring device 10 is not blocked by the floating paper dust and is not blocked by the floating paper dust at the reflecting unit 21. It is reflected and enters and receives light from the light receiving unit 15. Therefore, for example, as shown in FIG. 6, the display data of the liquid crystal display 55 in the blank state is the largest, and the acquisition data of the maximum value of received light, in other words, the minimum value of the floating amount of paper dust is obtained. .. On the other hand, in the test products 1 to 5 in which the predetermined conditions are changed, the test product 3 has a performance close to that of the blank state, and the amount of paper dust floating is the smallest (at the maximum light receiving amount). Can be minimized. From this, it is preferable to adopt the parameter conditions of the test product 3 in order to reduce the amount of paper dust generated, and it can be expected that the working environment in the manufacturing process will be improved.

As described above, in the measuring system 100 (measuring device 10) for the amount of floating paper dust (small amount of suspended matter) of the present embodiment, the paper dust floats during operation without quietly waiting for the paper dust to accumulate in the manufacturing process. Information on the amount of suspended paper dust (fine substances) can be measured and obtained.

Therefore, it is possible to obtain the degree of generation of paper dust that actually floats in the manufacturing process with high reliability, and it is possible to timely grasp the results of various product tests and work improvements and take measures such as reviewing. A measuring system 100 (measuring device 10) can be provided.

Here, in the present embodiment, as an example, a case where the measuring devices 10 are installed in the measurement target spaces Ar located at the adjacent lower portions on both sides of the laminated roller L in the axial direction and the falling paper dust floating amount is measured is taken as an example. I will explain, but it is not limited to this. As shown in FIG. 7, the measuring device 10 may be installed in the measurement target space Ar2 above the measuring device 10 to measure the rising amount of paper dust floating. Further, it may be installed in the measurement target spaces Ar3 and Ar4 located above and below between the laminated roller L and the secondary raw fabric roll R to measure the amount of paper dust floating, or the secondary raw fabric may be measured. It may be installed in the measurement target space Ar5 further downstream in the transfer direction than the roll R to measure the amount of paper dust floating out from the process. Furthermore, it is installed in the measurement target space Ar6 between the two primary raw fabric rolls r, and the amount of paper dust suspended is measured by paying attention to the generation of paper dust mainly in the form of thin paper p in the primary original fabric roll r. You may try to do it.

When measuring the amount of floating paper dust in these measurement target spaces Ar to Ar6, not only the main body 11 and the reflective portion 21 are arranged parallel to the transfer direction of the thin paper p, but also the thin paper p and the like are positioned above and below the thin paper p. The amount of paper dust suspended may be measured by setting the range to be measured as the measurement target space Ar to Ar6. In this case, for example, as shown in FIG. 8A, the main body portion 11 and the reflective portion 21 are arranged at separated positions in the direction orthogonal to the transfer direction of the thin paper paper p, and the side edge pe of the thin paper paper p is arranged. The measuring device 10-2 may be inserted from both sides to the inside, and as shown in FIG. 8 (b), another set of the main body portion 11 and the reflecting portion 21 are located in the center thereof. The measuring device 10-3 may be arranged in such a manner. Also in this case, the floating amount of paper dust in the measurement target spaces Ar to Ar6 can be measured, and the floating amount of paper dust can be measured in a range surrounded by thin paper p or the like and tending to stay.

In the above embodiment, tissue paper will be used as an example of thin paper, but the present invention is not limited to this, and can be applied to other paper products such as toilet paper and kitchen towels, and is further limited to paper dust. Needless to say, it can be applied to the measurement of the floating amount of fine objects such as floating dust.

Further, in the above-described embodiment, the case where the measurement data is displayed and output as it is on the liquid crystal display 55 will be described as an example, but the present invention is not limited to this, and for example, the light receiving amount data of the main body portion 11 (light receiving unit 15) is used. It may be possible to output to an external device such as a personal computer so that analysis or the like can be performed according to the passage of time.

The scope of the present invention is not limited to the exemplary embodiments illustrated and described, but also includes all embodiments that provide an equivalent effect to that of the present invention. Further, the scope of the present invention is not limited to the combination of the features of the invention defined by each claim, but may be defined by any desired combination of the specific features of all the disclosed features. ..

10 …… Measuring device 11 …… Main body part 13 …… Light emitting part 13a …… Emitting surface 15 …… Light receiving part 15a …… Light receiving surface 21 …… Reflecting part 21a …… Reflecting surface 31 …… Pedestal part 33 …… No. 1 installation table 35 …… 2nd installation table 37 …… base 51 …… amplifier unit 53 …… power supply unit 55 …… liquid crystal display 100 …… measurement system Ar, Ar2 to Ar6 …… measurement target space L …… stacking Roller ML …… Measurement light p …… Tissue paper pe …… Side edge T …… Tissue paper r …… Primary original roll R …… Secondary original roll

Claims (6)

It is a measuring device that is installed in the floating space of minute objects generated from the transferred paper products and acquires information about the minute suspended objects.
It is provided with a light emitting unit that emits a predetermined amount of measurement light and a light receiving unit that receives the measurement light of the light emitting unit.
The light emitting portion and the light receiving portion are arranged so that the measurement light is parallel to the transfer direction of the paper product.
A device for measuring minute suspended matter, characterized in that the light receiving portion receives the measured light emitted by the light emitting unit through the floating space of the minute object and outputs information according to the amount of received light of the measured light. .. The measuring device for minute suspended matter according to claim 1, wherein the light emitting portion and the light receiving portion are arranged at a separated position sandwiching the floating space of the minute object. A reflector is provided at a position separated from the light emitting portion and the light receiving portion so as to sandwich the floating space of the minute object.
The measurement of minute suspended matter according to claim 1, wherein the light emitting unit emits the measurement light toward the reflector, and the light receiving unit receives the measurement light reflected by the reflector. Device. The device for measuring minute suspended matter according to any one of claims 1 to 3, further comprising a display unit that acquires and outputs information according to the amount of received light output by the light receiving unit. Claim 1 is characterized in that it has a pedestal portion that enables installation of the light emitting portion and the light receiving portion in a floating space of the minute object and fixes a relative positional relationship between emission and light reception of the measured light. The device for measuring minute suspended matter according to any one of claims 4. The measuring device for microfloating matter according to any one of claims 1 to 5 above is installed in the manufacturing process of a paper product in which paper powder floats as the fine matter .
The manufacturing process of the paper product is a step of processing the thin paper in the process of unwinding the semi-finished thin paper from the upstream roll and winding it on the downstream roll.
Measurement of the minute suspended matter on one or both sides of any one or more of the upstream roll, the downstream roll and the processing position in the transfer direction of the thin paper sent from the upstream roll to the downstream roll. A measurement system for microfloating matter, characterized by the installation of a device.

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