JP3035539U - Combustion test equipment for surface flash - Google Patents

Abstract

(57) [Abstract] [Problem] A small flame is applied to the fluff protruding from the fabric surface for a very short time so that the fabric body does not ignite. It is an object of the present invention to provide a device capable of accurately measuring the time it takes to spread to fluff. SOLUTION: A test piece mounting frame 2, a pedestal 5 for vertically fixing the test piece mounting frame 2, a flame generator 10, and a test piece 1 are stretched in the horizontal direction on the front surface of the surface under test of the test piece 1 at appropriate intervals. Sensor filament thread 6, sensor filament thread cutting detection means 14 for detecting melt cutting of the sensor filament thread 6, and sensor filament thread cutting detection means 14
A calculation including a time measuring means 21 for individually calculating the time from when the tip of the flame contacts the surface of the test piece 1 to be tested to when each of the sensor filament threads 6 is cut based on the signal from A combustion test apparatus 30 for surface flushing, which comprises a means 20.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a combustion test device for surface flash, and more specifically, it accurately measures the time required for the surface flash of a textile product (the flame ignited on the surface fluff spreads rapidly in a moment). It relates to test equipment for measurement.

[0002]

[Prior art]

 Conventionally, the flammability test of a textile product is specified in JIS (Japanese Industrial Standard) L1091 “Combustion test method for textile products”. According to the test method specified in this standard, a burner is applied to the bottom of a test piece of specified dimensions to ignite it, and the body of the test piece burns with a flame (afterflame time), the body of the test piece. The area of carbonized, melted and carbonized (carbonized area) and its maximum length (carbonized distance) are measured.

All of these tests are test methods relating to the combustion of the fabric body of the textile product, and only the fluff on the surface of the textile product burns rapidly in an instant. The current situation is that it is not specified. The conventional test method described above has a problem that the flammability of the fabric body can be evaluated, but the susceptibility to the surface flash phenomenon, which is a problem on the surface of the textile product, cannot be evaluated.

[0004]

[Problems to be solved by the device]

 The object of the present invention is to improve the above-mentioned problems or drawbacks of the above-mentioned prior art, and to apply a small flame to the fluff protruding from the fabric surface for a very short time so as not to ignite the fabric body. This will provide a device that can accurately measure the time it takes for the flame that ignites on the fluff to spread to the fluff on the ground surface in an instant.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention adopts a basic technical configuration as described below. That is, the test piece mounting frame to which the fabric of the test piece is attached, the pedestal for fixing the test piece mounting frame perpendicularly to the horizontal plane, and the flame that generates the flame so that the tip of the flame reaches the surface of the test piece. A generator, a plurality of sensor filament yarns stretched horizontally from each other on the front surface of the surface under test of the test piece at appropriate intervals, and to detect that the sensor filament yarns have been melted and cut. , The sensor filament yarn breakage detecting means arranged in the vicinity of the respective sensor filament yarns, and based on the signal from the sensor filament yarn breakage detecting means, the tip of the flame is the surface under test of the test piece. A surface means comprising a time measuring means for individually calculating the time from the point of contact with the sensor to the time when each of the sensor filament yarns is cut. A Mesh combustion testing apparatus.

[0006]

[Embodiment of the invention]

 Since the present invention employs the technical configuration as described above, by inserting the test piece into the fixed needle of the frame for mounting the test piece and mounting it, and leaning the test piece mounting frame on the mount, the test piece is mounted. After being set vertically, the test piece is ignited by contacting a small flame to the lower part of the test piece for a very short time by a burner constituting a flame generator. As a result, in a test piece that causes a surface flush, the flame burns to the fluff on the surface of the test piece and momentarily spreads upward. The moment when the flame spreads upward is detected by cutting a plurality of ultra-fine sensor filament yarns, which are attached in front of the test piece in the horizontal direction at equal intervals, by heat fusion. The time from when the small flame ignites on the surface of the test piece to when the ultra-fine sensor filament yarn for flame detection is cut is counted by the attached timer means, and the flame burns on the test piece in a short time. It accurately measures the spreading time.

[0007]

【Example】

 Hereinafter, a specific example of a combustion test apparatus for surface flash according to the present invention will be described in detail with reference to the drawings. That is, FIG. 1 shows an example of a structure of a combustion test apparatus for surface flush according to the present invention. In the figure, a test piece attachment frame 2 to which the cloth of the test piece 1 is attached and the test piece attachment frame 2 are attached. , Which is fixed vertically to the horizontal plane, a flame generator 10 for generating a flame so that the tip of the flame reaches the surface of the test piece 1, and an appropriate front surface of the test surface of the test piece 1. A plurality of sensor filament yarns 6 stretched in the horizontal direction at intervals of, and the sensor filament yarns 6 are arranged near the respective sensor filament yarns 6 in order to detect that the sensor filament yarns 6 have been melted and cut. Based on the signals from the sensor filament yarn breakage detecting means 14 and the sensor filament yarn breakage detecting means 14, from the time when the tip of the flame comes into contact with the surface of the test piece 1 under test, Down operation means 20. surface flash combustion testing apparatus 30 is constructed from, each containing a timekeeping means 21 is individually calculating the time until the cutting Sir filament yarn 6 is shown.

That is, in the combustion test apparatus 30 for surface flash according to the present invention, the flame generated by the flame generator 10 is short-circuited at the lower end portion of the test piece 1 vertically attached to the mount 5. It is configured so as to accurately measure the time during which the flame that has been exposed to the flame for a time and has spread to the fluff on the fabric surface of the textile product that is the test piece 1 instantaneously spreads upward.

An example of the structure of the flame generator 10 used in the present invention is composed of a burner 16 and a burner driving means 11 which is driven and controlled by a computing means 20 described later. May be. It is desirable that the burner 16 in the flame generator 10 has a mechanism in which the position of the tip of the burner 16 is adjustable so that the position of the tip can be arbitrarily changed. It is possible to easily set the positional relationship with the flame front end portion generated at the front end portion of the burner 16 within a predetermined range.

It is desirable that the flame generated from the flame generator 10 is not a very large flame but a relatively small flame. In the present invention, it is desirable that the test piece 1 be ignited by a small flame generated from the burner 16 constituting the flame generator 10. That is, a combustible gas, for example, butane gas, is supplied through a burner 16 horizontally placed at the center of the test piece 1 in the width direction, and ignited therein, for example, a diameter of about 6 mm and a length of about 6 mm. Generates a small flame of about 20 mm, and the tip of the flame is applied to the dough surface of the test piece for a very short time, for example, for about 0.5 seconds, so that the dough body of the test piece 1 is ignited. Instead, the fluff protruding from the surface of the fabric is ignited.

The tip position of the burner 16 can be adjusted by an appropriate adjusting member provided in the burner driving means 11. Further, when a flame is generated from the burner 16, it is configured so that a predetermined amount of combustible gas can be supplied to the burner 16 in response to an output signal of the calculating means 20 described later. The burner 16 may be controlled in time in response to the output signal of the computing means 20.

That is, in the surface flash combustion test apparatus 30 according to the present invention, the flame generator 10 has a distance between the tip portion 18 for generating the flame and the surface under test of the test piece 1. The flame generator 10 has a position adjusting mechanism 17 that can be appropriately adjusted, and the flame generator 10 includes a flame amount adjusting means 19 that can appropriately adjust the size of the flame in response to the output of the calculating means 20. I want to have it.

In the present invention, the test piece mounting frame 2 is fixed to the gantry 5 arranged perpendicularly to the horizontal plane through appropriate mounting means. The method of attaching the frame 2 to the gantry 5 is not particularly limited, and any known attachment and fixing means can be used. However, in the present invention, the gantry 5 has an adjusting mechanism capable of appropriately adjusting the interval between the gantry 8 and the test piece mounting frame 2 when the test piece mounting frame 2 is mounted and fixed. It is desirable to be doing.

For example, behind the gantry 5, screws 15 for adjusting the position of the test piece mounting frame 2 are provided at four positions in the vertical and horizontal directions, and these screws 15 can be rotated. Therefore, the mounting position of the test piece mounting frame 2 can be finely adjusted back and forth. Therefore, in the present invention, according to the length of the fluff of the test piece 1, the test piece mounting frame 2 is so arranged that the relative position between the surface of the test piece and the tip of the flame is always constant. Can be attached to the stand 5.

In the present invention, when the test piece 1 is attached to the test piece mounting frame 2, the test piece 1 is provided with a test piece fixing needle 3 provided around the test piece mounting frame 2. At the same time when the test piece fixing needle 3 is pierced with, the tip of the test piece support pin 4 provided near the test piece fixing needle 3 is abutted and fixed. Therefore, in the present invention, the test piece can be uniformly attached to the fixed height from the lower end of the test piece attachment frame 2 without slack.

After that, the test piece attachment frame 2 is attached to the gantry 5 arranged vertically, in parallel with the plane of the gantry. Next, in the combustion test apparatus 30 for surface flush according to the present invention, the fluff existing on the surface of the test piece 1 is moved upward from the lower end of the test piece 1 in any state of the surface flash phenomenon due to the flame. A plurality of sensor filament yarns 6 stretched in the horizontal direction at appropriate intervals on the front surface of the surface of the test piece 1 to be tested are used in order to detect whether or not the test piece 1 spreads.

As shown in FIG. 2 and FIG. 3, a plurality of such sensor filament yarns 6 are arranged above the tip end portion 18 of the flame generating portion 16 of the flame generator 10 at regular intervals. It is stretched in parallel and horizontally. The interval can be set to, for example, 10 cm, but in the present invention, it is not limited to the related interval, but can be set appropriately according to the characteristics of the test piece 1.

The sensor filament yarn 6 is preferably an ultrafine synthetic fiber filament having a heat-melting property, and for example, a nylon filament having a diameter of 0.08 mm can be used. As a concrete example of the present invention, as shown in FIG. 2 or 3, an example of using three sensor filament yarns 6 is shown, but the present invention uses three sensor filament yarns. It is not limited to doing.

In the present invention, the sensor filament yarn 6 is stretched at a suitable distance from the front surface of the test piece 1, and the distance is not particularly specified, and the test is not limited. It can be appropriately set according to the characteristics of the piece 1. In the surface flash combustion test apparatus 30 according to the present invention, a plurality of sensor filament threads 6 stretched on the front surface of the test piece 1 are melted by the heat of the flame and cut at appropriate times. By detecting with the sensor filament yarn breakage detecting means 14, the speed of flame spread can be obtained for each of the lower part, the central part and the upper part of the test piece 1.

The sensor filament yarn cutting detection means 14 used in the surface flushing combustion test apparatus 30 according to the present invention has a structure capable of accurately detecting that the sensor filament yarn 6 has been melt-cut. Any detector may be used, but it is also possible to use, for example, a phototube sensor. Further, in the present invention, as a method for tensioning the sensor filament yarn 6, for example, as shown in FIGS. 2 and 3, a reel 7 on which the sensor filament yarn 6 is wound in advance is used. The sensor filament yarns 6 are respectively arranged at predetermined positions, for example, at predetermined positions on the gantry 5, and the respective sensor filament yarns 6 drawn out from the reel 7 are fed out from the upper surface of the guide 8 and the front surface of the sensor filament yarn cutting detecting means 14. The sensor filament yarn 6 is stretched through the upper surface of the receiving side guide 9, and a suitable load 9 is applied to the tip of the sensor filament yarn 6 to stretch the sensor filament yarn 6 uniformly and linearly.

The load 9 is set so that a tension of, for example, 1 gf is applied to the sensor filament yarn 6, so that the sensor filament yarn 6 can be stretched horizontally without slack. By adopting such a configuration, in the present invention, the sensor filament yarns 6 can be tensioned easily and quickly, even if all the sensor filament yarns 6 are tensioned under a constant tension condition. It will be possible.

On the other hand, in the present invention, in order to avoid a measurement error or a variation in measurement, it is necessary to prevent the flame from hitting the surface of the test piece 1 between the flame generator 10 and the test piece 1. It is desirable to provide a flame shield 12 that can be temporarily prevented. In other words, when testing the spread of the surface flash phenomenon according to the present invention, the timing of applying a flame to the test piece 1 or the interval between the test piece 1 and the flame is important, and the operator's hand is required for each test. When a flame is ignited on the fluff of the test piece 1 due to work or intuition, the position or timing of the fluff becomes different, so that it is difficult to obtain a lot of reliable test data.

Therefore, in the present invention, the flame shield plate 12 is provided in advance between the flame generator 10 and the test piece 1 to temporarily prevent the flame from hitting the surface of the test piece 1. While preventing, fix the position of the flame part generation part of the flame generator 10 and adjust the flame size to a predetermined size, and then withdraw the flame shield plate 12. By actually igniting the flame on the fluff of the test piece 1, stable and highly reliable data can be obtained.

That is, in the present invention, first, the flame shield plate 12 is interposed between the test piece 1 and the flame generator 10 and placed horizontally toward the test piece 1. After igniting the flame generator 10 including the burner 16 and the like, the burner driving means 11 moves the burner 16 in front of the test piece 1 to a predetermined distance. During this period, since the flame shield plate 12 is present, the flame generated from the flame generator 10 does not reach the test piece 1 and the flame is temporarily shielded from hitting the surface of the test piece 1. Will be

After that, by dropping the flame shield plate 12, the flame hits the surface of the test piece 1 and the fluff on the surface of the test piece 1 ignites, causing a surface flash phenomenon. In the case of a test piece that causes a surface flash, the flame vigorously spreads upward on the surface of the test piece. The retreat movement of the flame shield plate 12 in the present invention is not limited to falling, but may be movement in the left and right directions.

In the present invention, the fall of the flame shield plate 12 is detected by an appropriate detection means, for example, a micro switch 13, and the output thereof is transmitted to the arithmetic control means 20 to activate the clock means 21. . As the clock means 21, for example, a timer may be used. As a result, a calculation process for measuring the elapsed time after the flame is ignited on the surface of the test piece 1 is started.

In the present invention, after the flame hits the surface of the test piece 1 for an extremely short time (for example, 0.5 seconds), the combustible gas supplied to the flame generator 10 is automatically supplied. This processing operation is performed by the CPU 26 based on an appropriate program stored in the ROM 27 or the like, which is an appropriate memory provided in the arithmetic control means 20, for example. May be executed by outputting.

When the flame is extinguished, the burner 16 is returned to the original position by being separated from the vicinity of the test piece 1 by the burner driving means 11. On the other hand, when the surface flash occurs due to the ignition of the test piece 1, the flame vigorously spreads upward. At this time, the tip of the flame comes into contact with the sensor filament yarn 6 composed of fine filaments stretched horizontally, and at the same time, the sensor filament yarn 6 is melted and cut by the heat of the flame.

The time when the sensor filament yarn 6 is cut is detected by a photoelectric tube type sensor, which is the sensor filament yarn cutting detection means 14, and the elapsed time from ignition to the cutting of each sensor filament yarn 6 is individually detected. And the speed at which the flame propagates on the surface of the test piece 1 is evaluated. FIG. 4 shows an example of a control circuit block diagram of the surface flash combustion test apparatus 30 according to the present invention.

As shown in FIG. 4, when the main switch 22 is turned on, power is supplied to each circuit section centering on the arithmetic control means 20, and first, the flame amount adjusting means 19 of the flame generator 10 is brought into contact. In order to set a predetermined flame size, an adjustment signal is supplied so that a predetermined adjusted combustible gas is supplied to the burner 16, a flame is generated in the burner 16, and then the burner 16 is generated. A predetermined signal is supplied to the position adjusting means 17 to move the burner 16 forward to a predetermined position.

After that, when the flame shield plate 12 drive means 26 is driven to lower the flame shield plate 12, a measurement start signal is input from the microswitch 13 to the arithmetic and control means 20 and at the same time the timekeeping means. The time information from 21 is taken into the arithmetic and control means 20, and the elapsed time from the time when the measurement start signal is input by the CPU is counted.

The flame generation time of the burner 16 in the flame generator 10 is set to 0.5 seconds after the flame shield plate 12 drops as described above. After that, when the first sensor filament yarn 6 (1) (the sensor filament yarn closest to the flame) is cut, the sensor filament yarn cutting detection means for monitoring the sensor filament yarn 6 (1) When the disconnection detection signal is generated from 14-1 and the detection signal is input to the arithmetic control means 20, the measurement start signal from the micro switch 13 is input to the arithmetic control means 20 and then the sensor filament The elapsed time until the yarn 6 (1) is cut is calculated and stored in an appropriate memory, for example, the RAM 23.

Similarly, when the second sensor filament yarn 6 (2) and the third sensor filament yarn 6 (3) are cut, the sensor filament yarns 6 (2) and 6 (3) are cut. The sensor filament yarn breakage detecting means 14-2 and 14-3 which are respectively monitored generate cutting detection signals individually, and the detection signals are input to the arithmetic control means 20 to start measurement from the microswitch 13. The elapsed time from the input of the signal to the arithmetic control means 20 to the disconnection of the sensor filament yarns 6 (2) and 6 (3) is arithmetically processed and stored in the memory.

After that, when the test end signal is output, the burner 16 of the flame generator 10 retracts to the original position, returns the flame shield plate 12 to the original shield position, and performs the one-step test procedure. The order ends. After that, the measurement data stored in the memory 23 can be displayed and notified via an appropriate display means 24.

That is, the operation control means 20 in the combustion test apparatus for surface flash according to the present invention measures the time when the flame shield plate 12 is displaced and the flame comes into contact with the surface of the test piece 1. By operating the means 21, the time until the cutting time of each sensor filament yarn 6 is detected is calculated for each sensor filament yarn 6.

Further, the calculation control means 20 stores the calculated time until the cutting time of each of the sensor filament yarns 6 is detected in an appropriate storage means 23, and the display means 24 displays the time. It has a display function. Whether the textile product tested by the combustion test apparatus 30 for surface flush in the present invention is suitable for use as a clothing product, depending on whether the spread state of the surface flush is early or slow. I can judge.

The three sensor filament yarns 6 made of Nylon Tegus (“Ayu Shorin Protype” fishing line) having a diameter of 0.09 mm and having the structure shown in FIG. 3 according to the present invention are described below. An example of measuring the state of occurrence of surface flash using a combustion test device for surface flash, which is horizontally stretched on the front surface of a test piece at intervals of 10 cm with a load of 1 g, will be described.

All the samples used for this measurement were left in a thermostatic dryer at 50 ± 2 ° C for 24 hours according to the sample preparation method specified in JIS L-1091, and then placed in a desiccator containing silica gel. The test was conducted after standing for 2 hours or more. Immediately before mounting the sample on the tester, the sample was brushed to fluff the surface so that the surface flash easily occurred, and the test was conducted.

For brushing, an apparatus suitable for the conditions specified in CS191-53 was prototyped. As a test piece, a cloth composed of the following four kinds of fibers was used. That is, test piece A: cotton test piece B: cotton / acrylic fiber mixed spinning test piece C: acrylic fiber test piece D: rayon Each test piece described above [20 cm (horizontal) × 40 cm (vertical)] was brushed and applied. When the test piece was held vertically and the flame was brought into contact with the test piece 5 cm from the lower end, the time required for the flame to spread upward by 30 cm was measured at 10 cm intervals.

Liquefied petroleum gas No. 4 (mainly composed of butane and butylene) defined in JIS L-1091 C method was used as a fire source. The test results were as shown in Table 1. From this result, it was found that the sample A (cotton) and the sample D completely generated the surface flash, and the sample C did not generate the surface flash at all.

On the other hand, in sample B, a surface flash occurred for a moment, and the flame spread up to a height of 20 cm, but self-extinguished immediately and did not spread up to a height of 30 cm. Therefore, it can be presumed that Sample A and Sample D are products in which surface flash easily occurs.

From the above results, by using the combustion test device for surface flash according to the present invention, the user side of each device previously set a predetermined reference for the flame spread time. , It is possible to determine the degree of surface flash of the test product, and it is possible to determine whether the test product is suitable or not suitable for a given application.

[0043]

[Table 1]

Note) --- was not extinguished because the flame did not spread on the fluff on the surface of the test piece at this height and extinguished spontaneously.

[0045]

[Effect of the invention]

 Since the present invention has the configuration as described above, it has the following effects. (1) Depending on the thickness of the test piece and the length of the fluff protruding from the surface of the test piece, the distance between the flame tip and the fluff surface can be maintained at a predetermined constant value.

(2) By using the flame shield plate, there is an advantage that the flame does not ignite on the test piece even if the flame is brought close to the test piece in advance, and further, the flame shield plate is dropped. Since the test piece is exposed to the flame after it has been fired, the starting point of the ignition time can be controlled extremely accurately. (3) Since the fine ultrafine heat-fusible filament thread is used as the sensor filament thread, it is easily melted and cut even if a small small flame strikes, so the cutting time should be measured. This makes it possible to accurately measure the flame spread time due to the surface flash.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of the configuration of a combustion test apparatus for surface flush according to the present invention.

FIG. 2 is a front view of a measuring portion in the combustion test apparatus for surface flush according to the present invention shown in FIG.

FIG. 3 is a perspective view showing a configuration example of a combustion test apparatus for surface flush according to the present invention.

FIG. 4 is a block diagram showing a configuration example of a control means in the combustion test apparatus for surface flush according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Test piece 2 ... Test piece attachment frame 3 ... Test piece fixing needle 4 ... Test piece support pin 5 ... Stand 6 ... Sensor filament thread 7 ... Reel 8 ... Guide 9 ... Load 10 ... Flame generator 11 ... Burner drive means 12 ... Flame shield plate 13 ... Micro switch 14 ... Sensor filament yarn cutting detection means 15 ... Extension screw 16 ... Burner 17 ... Burner position adjusting mechanism 18 ... Burner tip portion 19 ... Flame amount adjusting means 20 ... Calculation control means 21 ... Timing means 22 ... Main switch 23 ... RAM 24 ... Display means 26 ... Flame shield plate driving means 27 ... ROM 30 ... Surface flash combustion test device

Claims (11)

[Utility model registration claims] 1. A test piece mounting frame for mounting the fabric of the test piece, a pedestal for fixing the test piece mounting frame perpendicularly to a horizontal plane, and a flame is generated so that the tip of the flame reaches the surface of the test piece. A flame generator, a plurality of sensor filament yarns stretched in the horizontal direction at appropriate intervals on the front surface of the surface of the test piece of the test piece to be detected, and the fact that the sensor filament yarns are melt-cut Therefore, based on the signal from the sensor filament thread cutting detection means arranged near each of the sensor filament thread, the signal from the sensor filament thread cutting detection means, the tip of the flame is on the test surface portion of the test piece. It is characterized in that it is composed of a computing means including a timing means for individually computing the time from the point of contact to the cutting of each of the sensor filament threads. Combustion test equipment for surface flushing. 2. The gantry has an adjusting mechanism capable of appropriately adjusting a distance between the gantry and the test piece mounting frame when the test piece mounting frame is mounted and fixed. Item 1. A surface flash combustion test apparatus according to Item 1. 3. The combustion for surface flash according to claim 1, wherein the flame generator is for generating a flame in a direction perpendicular to a surface portion of the test piece to be tested. Test equipment. 4. The flame generator has a position adjusting mechanism capable of appropriately adjusting a distance between a tip part for generating the flame and a surface part under test of the test piece. The combustion test apparatus for surface flash according to claim 1. 5. The combustion test apparatus for surface flash according to claim 1, wherein the flame generator has a flame amount adjusting means capable of appropriately adjusting the size of the flame. 6. Between the flame generator and the test piece,
The combustion test apparatus for surface flash according to claim 1, further comprising a flame shielding plate that can temporarily prevent the flame from hitting the surface of the test piece. 7. The combustion test device for surface flush according to claim 1, wherein the sensor filament yarn is a heat-melting filament yarn. 8. The combustion test apparatus for surface flush according to claim 7, wherein the sensor filament yarn is an ultrafine filament yarn. 9. The sensor filament yarn breakage detecting means is a photoelectric tube type sensor.
Combustion test apparatus for surface flush as described. 10. The computing means activates the timing means when the flame shield plate is displaced and the flame comes into contact with the surface of the test piece, and the time when the sensor filament yarn is cut is detected. 2. The combustion test apparatus for surface flush according to claim 1, wherein the time until is calculated for each of the sensor filament yarns. 11. The calculating means has a function of storing the calculated time until the cutting time point of each of the sensor filament yarns is detected in an appropriate storage means and displaying it on the display means. The combustion test apparatus for surface flash according to claim 10.