JP3315065B2 - Floor panel testing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floor panel test apparatus.

[0002]

2. Description of the Related Art When a load is applied to a floor panel, a squeaking noise or other noise may be generated. As an example, the inside of a metal outer skin in which the upper surface formed of a metal plate such as an iron plate is placed over the upper opening of a lower body in the shape of a flat container formed of a metal plate such as an iron plate and the periphery thereof is fixed. Is known to form floor panels by filling and foaming foamed concrete. The floor panel where such outer skin is made of metal and the inside is filled with foam concrete and foamed,
It has high strength and can support a large load. However, if a load of several hundred kilograms is applied, but rarely, if the adhesion of the foamed concrete to the inner surface of the metal outer skin is weak, contact between the inner surface of the metal outer skin and the foamed concrete may occur. There is a case where the surface is peeled off and a sound is produced, which is not preferable as a product.

Conventionally, a squeak noise generated when a load is applied to the floor panel and a sound generated when the contact surface between the inner surface of the metal outer skin and the foamed concrete peels off are detected. There was no equipment to do. Conventionally, there is no device for detecting the flatness of a floor panel when a load is applied to the floor panel.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and detects sound generated when a load is applied to a floor panel to determine whether or not the sound is non-defective. It is an object of the present invention to provide a floor panel test apparatus which can determine whether a floor panel is defective and which can detect the flatness of the floor panel when a predetermined load is applied to the floor panel. .

[0005]

[0006]

[0007]

[MEANS FOR SOLVING THE PROBLEMS]
The floor panel test apparatus according to the present invention includes a support means 2 for supporting a floor panel, which is a product under test 1, and a load applied to a predetermined portion of the product under test 1 with the product under test 1 supported by the support means 2. , A sound detection unit 4 for detecting a sound emitted from the DUT 1 when a load is applied to the DUT 1 by the load addition unit 3, and an output of the sound detection unit 4 set in advance. And a comparing and judging means 5 for judging by comparing the measured values with the lower surface of the DUT 1 supported by the support means 2 and having a contact surface with the lower surface of the DUT 1 in advance. A plurality of displacement sensors 6 whose flatness has been determined and a predetermined position of the DUT 1 in a state where the DUT 1 is supported by the support means 2 and the plurality of displacement sensors 6 are in contact with the lower surface of the DUT 1. Of a plurality of displacement sensors 6 when a load is applied by Flatness calculating means 7 for calculating the flatness of the DUT 1 from the force and the predetermined flatness of the contact surface of the plurality of displacement sensors 6 with the lower surface of the DUT 1 is provided. It is characterized by the following. With such a configuration, it is possible to detect a sound emitted from the DUT 1 when a load is applied to the DUT 1 and determine the sound by comparing the sound with a preset value. For example, if a sound volume equal to or higher than the set value is detected, it is determined to be defective, and if the sound volume is equal to or lower than the set value, it is possible to select a non-defective product. Flatness can be determined. And
For example, by detecting the relationship between the load and the flatness, it is possible to sort out non-defective products and defective products, or place a desk,
The flatness of the floor panel can be obtained in a normal use state in which a person only rides.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings. FIG. 1 shows a front view of the floor panel test apparatus of the present invention, FIG. 2 shows a side view, and FIG. 3 shows a plan view. A base 9 is provided at a substantially central portion in the vertical direction of the base frame 8, and a plurality of wheel casters 10 are rotatably mounted on an upper surface of the base 9. Also,
Side guides 11 are provided on both sides of the upper surface of the base 9. A jig pallet 12 is movably mounted on the plurality of wheel casters 10.

As shown in FIGS. 1 and 4, the jig pallet 12 is provided with a plurality of support stands 13 projecting from the jig pallet 12. The support stand 13 supports the floor panel as the DUT 1. It is 2. Four support bases 13 are provided in the embodiment, and the four support bases 13 are arranged so as to be located at four corners of a virtual square line (for example, a virtual square line) in plan view. . The four support bases 13 are designed to mount and support the four corners of the floor panel, which is the DUT 1,
In this manner, the four support bases 13 mount and support the four corners of the floor panel as the DUT 1, thereby reproducing the actual support state of the floor panel in the construction state.

A plurality of displacement sensors 6 such as strain gauges and a plurality of rows are arranged vertically and a plurality of rows horizontally at a portion surrounded by an imaginary square line connecting the four support bases 13 on the upper surface of the jig pallet 12. Are provided. In the embodiment shown in FIG.
A total of nine displacement sensors 6 are provided in three rows. An air cylinder 14 constituting the load applying means 3 is provided above the base frame 8, and a rod 15 of the air cylinder 14 is provided.
As shown in FIG. 1 and FIG.
And a sound detector 17 as the sound detecting means 4, and a cushion member 18 is attached to a lower end surface portion of the load cell 16. An air supply source 19 is provided on the upper part of the base frame 8, and as shown in FIG.
The air is supplied to the air cylinder 14 through the, and the air cylinder 14 is driven to raise and lower the rod 15. Then, as shown in FIG. 6, the vertical movement amount of the rod 15 is detected by the position sensor 22 so as not to move beyond the set range.

A control panel 23 is provided above the base frame 8, and a control section 24 is provided on the control panel 23. FIG.
2 shows a control block diagram according to the present invention. FIG.
As shown in (1), load information output from the load cell 16 is input to the control unit 24. A sound detection signal output from the sound detector 17 is input to the control unit 24, and the sound signal is detected by a comparison determination circuit provided as a comparison determination unit 5 provided in the control unit 24. The output from the unit 17 is compared with a preset value (reference sound data stored in the control unit 24 in advance) to determine whether the value is larger than the preset value. The sound generation means 25 is controlled to display an alarm, and the sound information is controlled to be displayed by a display means 26 such as an oscilloscope.

Signals output from the plurality of displacement sensors 6 are input to the control unit 24, and the flatness calculating means 7 provided in the control unit 24 is provided.
In the flatness calculating circuit, the output from the plurality of displacement sensors 6 and the flatness of the contact surface of the plurality of displacement sensors 6 which are obtained in advance and stored in the control unit 24 with the lower surface of the DUT 1 are obtained. (I.e., the initial values of the plurality of displacement sensors 6) to calculate the flatness of the DUT 1, and display means 2 such as a monitor television.
The flatness calculated in step 7 can be displayed, or the flatness data calculated by the printer 28 can be printed out. Further, when the flatness of the DUT 1 when a predetermined load is applied to the DUT 1 exceeds a certain range, that is, when the DUT 1 is deformed beyond a predetermined range, The sound generation means 25 is controlled to display an alarm.

First, a description will be given of a case where a sound generated when a predetermined load is applied to the floor panel as the DUT 1 is detected and determined in the above-described apparatus. The DUT 1 is placed and supported on a support 13 of a jig pallet 12 placed on a plurality of wheel casters 10 (in this case, four corners of the DUT 1 are provided on the jig pallet 12). (The supporting state is the same as the actual construction state of the floor panel by being mounted and supported on the four support bases 13). Next, a predetermined load is applied to a predetermined position of the DUT 1 by operating the air cylinder 14 serving as the load applying means 3, and a sound is detected by the sound detector 17 in the vicinity of the load, and the sound is detected. A detection signal of the sound detected by the detector 17 is output to the control unit 24, and a comparison determination circuit provided as a comparison determination unit 5 provided in the control unit 24.
The determination is made by comparing the output from the device with a preset value. The sound information is displayed by display means 26 such as an oscilloscope. Also, the sound detector 1
If the output from 7 is a value larger than a preset value, an alarm display is performed by the sound generating means 25, whereby the alarm display is regarded as defective and the alarm display is not performed. Things can be identified as good.

The floor panel as the DUT 1 is, for example, a flat container-shaped lower body formed of a metal plate such as an iron plate, with an upper opening formed of a metal plate such as an iron plate over the upper opening. It is formed by filling and foaming a foamed concrete inside a metal outer skin to which the periphery is fixed, and the air cylinder 14 serving as the load applying means 3 is used to form the foamed concrete.
When a load of 0 kg is applied, the sound detector 17 detects the sound generated from the DUT 1 and makes the determination as described above. The adhesion between the inner surface of the metal outer skin and the foamed concrete is determined. Is weak, when a large load is applied, the inner surface of the metal outer skin and the contact surface with the foam concrete are separated, and at this time, a sound volume exceeding a certain value is output. If is greater than a certain value,
The device under test 1 is determined to be defective, and the sound detector 17
If the sound volume of the sound detected in step (1) is lower than a certain value, it is determined that the contact surface between the inner surface of the metal outer skin and the foamed concrete does not peel off and is a non-defective product. Of course, the floor panel that is the DUT 1 is not limited to the above-described floor panel, and a floor panel having another structure detects a sound (for example, a squeaking sound) generated when a load is applied in the same manner. Tens of K, which is a constant load, for example, a load in a normal use state in which a person gets on or a desk is placed.
By detecting a squeak sound when a load of g is applied to the DUT 1, if a squeak sound of a predetermined volume or more is generated, it is determined to be a defective product. Is what you can do.

When a load is applied to the DUT 1 by the air cylinder 14 serving as the load applying means 3, for example, not only is the load applied to the center of the upper surface of the DUT 1 to detect sound, By moving the jig pallet 12 placed on the wheel caster 10, it is possible to detect a sound when a load is applied to any part of the upper surface of the DUT 1.

The information on the load applied to the DUT 1 from the load applying means 3 is detected by the load cell 16 and input to the control unit 24, whereby the load applied to the DUT 1 from the load applying means 3 is determined. Can be set to a value. Next, in the apparatus as described above, the DUT 1
The case where the flatness of the DUT 1 is obtained when a predetermined load is applied to the floor panel will be described.

As described above, a plurality of rows, a plurality of rows, and a strain gauge are provided on the upper surface of the jig pallet 12 at a portion surrounded by a virtual square line connecting the four support bases 13. A plurality of displacement sensors 6 are provided, and when the device under test 1 is
The lower surface of the plurality of displacement sensors 6 abuts on the lower surface of the DUT 1. The flatness of the abutment surfaces of the plurality of displacement sensors 6 with the lower surface of the DUT 1 is determined in advance. Are stored in the control unit 24. Here, the flatness of the contact surface of the plurality of displacement sensors 6 with the lower surface of the DUT 1 is determined as follows.

That is, in the embodiment shown in FIG. 8A, nine displacement sensors 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6h are arranged in three columns vertically and three rows horizontally.
i is provided. In this case, the measurement reference lines connecting the displacement sensors 6 arranged vertically, horizontally, and diagonally are A ₁ -A ₂ , B ₁ -B ₂ , C ₁ -C ₂ , D _1- D _2, E ₁ over E
₂ , F ₁ -F ₂ , G ₁ -G ₂ , H ₁ -H ₂
Displacement sensor 6 along the line A ₁ over A ₂ by parallel gauge
a, 6b, detects the level of each top end of 6c, displacement sensor 6d along line B ₁ over B ₂ by parallel gauge, 6e,
The level at each upper end of 6f is detected, and a line C is detected by a parallel gauge.
Displacement sensor 6g of ₁ over C _2, 6h, it detects the level of the upper end of 6i, detects displacement sensor 6a at line D ₁ over D _2, 6d, the level of each top end of 6g by parallel gauge, also, the line gauge To detect the level of each upper end of the displacement sensors 6b, 6e, 6h on the line E ₁ -E ₂ , and to detect the level of each upper end of the displacement sensors 6c, 6f, 6i on the line F ₁ -F ₂ by a parallel gauge, displacement sensor 6a at line G ₁ over G ₂ by parallel gauge 6
e, detects the level of each top end of 6i, the displacement sensor 6c in the line H ₁ over H ₂ by parallel gauge, 6e, by detecting the level of each top end of 6 g, the flatness of the upper surface of the plurality of displacement sensors 6 That is, the flatness of the contact surface of the plurality of displacement sensors 6 with the lower surface of the DUT 1 is determined, and this data is stored in the control unit 24 in advance.

Thus, a jig pallet 1 in which the floor panel to be tested 1 is placed on a plurality of wheel casters 10
(In this case, the four corners of the DUT 1 provided on the jig pallet 12
3 is placed in the same support state as the actual floor panel construction state), and the lower surface of the DUT 1 is brought into contact with the upper ends of the plurality of displacement sensors 6a. Next, a predetermined load is applied to a predetermined position of the DUT 1 by operating the air cylinder 14 as the load applying means 3. A plurality of displacement sensors 6 detect the displacement of the DUT 1 when the predetermined load is applied, and outputs from the plurality of displacement sensors 6 and the DUT of the plurality of displacement sensors 6 which are determined in advance. The flatness calculating means 7 calculates the flatness when a certain load is applied to the DUT 1 based on the flatness of the contact surface with the lower surface of the test piece 1.

Specifically, when a load is applied,
Measurement reference line A₁ー A_Two, B₁ー B_Two, C₁-C_Two, D₁
-D_Two, E₁ー E_Two, F₁-F_Two, G₁-G_Two, H₁ー
H_TwoEach displacement sensor 6a, 6b, 6c along each of
Determine the values of 6d, 6e, 6f, 6g, 6h, 6i and control
Measurement reference line A stored in the section 24 ₁
ー A_Two, B₁ー B_Two, C₁-C_Two, D₁-D_Two, E₁ー
E_Two, F₁-F_Two, G ₁-G_Two, H₁ー H_TwoAlong each of
Each of the displacement sensors 6a, 6b, 6c, 6d, 6e, 6
f, 6g, 6h, and 6i, and compare the difference between them.
When each load is applied to the DUT 1
In this case, the flatness can be obtained.

When a load is applied by the load applying means 3,
For example, by detecting the flatness of the floor panel, which is the DUT 1 when a load of several hundred kg is applied, those within the predetermined flatness range are regarded as non-defective products and the predetermined flatness is determined. Items that fall outside the range of the degree can be used for sorting such that a large amount of distortion when a predetermined load is applied is regarded as a defective product. In this case, the flatness may be measured simultaneously with the detection of the sound.

Further, by measuring the flatness when a load of several tens of kilograms, which is a load in a normal use state where a person gets on or a desk is placed, is applied to the DUT 1, the person can get on. It is possible to obtain distortion in a normal use state, such as when the user places a desk on a desk. of course,
Air cylinder 14 as load applying means 3
When a load is applied, for example, not only is a load applied to the center of the upper surface of the DUT 1 to obtain the flatness of the DUT 1, but also the jig pallet 12 placed on the wheel caster 10 is moved. By doing so, it is possible to detect the flatness of the DUT 1 when a load is applied to any arbitrary portion of the upper surface of the DUT 1.

[0023]

[0024]

[0025]

According to the first aspect of the present invention , as described above, the support means for supporting the floor panel, which is the product to be tested, and the test object supported by the support means are supported by the support means. A load applying means for applying a load to a predetermined portion of the test article, a sound detecting means for detecting a sound emitted from the test article when a load is applied to the test article by the load applying means, and an output of the sound detecting means. A comparing and judging means for judging by comparing with a set value; and a flatness of an abutting surface which is arranged so as to be in contact with the lower surface side of the DUT supported by the support means and which is in contact with the lower surface of the DUT in advance. And a plurality of displacement sensors for which the load is determined and a load applied by a load applying means to a predetermined portion of the device under test in a state where the device under test is supported by the support means and the plurality of displacement sensors are in contact with the lower surface side of the device under test. And the output of multiple displacement sensors when adding And the flatness calculating means for calculating the flatness of the device under test from the flatness of the contact surface of the plurality of displacement sensors with the lower surface of the device under test. It is possible to detect the sound emitted from the DUT when a load is applied and determine the sound by comparing the sound with a predetermined value. If the volume is lower than the set value, it can be classified as a good product.
Also, in the floor panel manufacturing process, by performing this inspection, it is possible to easily select and inspect non-defective and non-defective products, and determine the flatness of the DUT when a load is applied. As a result, for example, in the floor panel manufacturing process, by detecting the relationship between the load and the flatness, it is possible to sort non-defective products, defective products, or put a desk, The flatness of the floor panel can be obtained in a normal use state such as riding. In addition, the sound generated from the floor panel, which is the DUT when the load is applied, is detected and compared with a predetermined value, and the floor which is the DUT when the load is applied is determined. The flatness of the panel can be obtained simultaneously by applying a load by a common load applying means.

[Brief description of the drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory view showing a state in which a load is applied to the DUT by the load applying means.

FIG. 5 is an explanatory diagram of a portion for detecting a sound generated from the DUT when a load is applied by the load applying means.

FIG. 6 is an explanatory diagram of a state in which a position sensor detects a lowered position by the air cylinder.

FIG. 7 is a control block diagram of the above.

FIG. 8 shows an arrangement diagram of a plurality of displacement sensors according to the first embodiment;
(A) is a schematic plan view, (b) is a schematic front view.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 device under test 2 support means 3 load applying means 4 sound detection means 5 comparison and judgment means 6 displacement sensor 7 flatness calculation means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masataka Hattori 2-22-5 Shodai Otani, Hirakata City, Osaka Prefecture Inside Horita Iron Works Co., Ltd. (56) References JP-A-6-341942 (JP, A) JP-A Heihei 2-236142 (JP, A) JP-A-8-43362 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01N 19/08 G01H 3/00 G01M 7/08 G01N 29 / 14 JICST file (JOIS)

Claims (1)

(57) [Claims] 1. A support for supporting a floor panel to be tested.
Means and the DUT with the DUT supported by the support means
Load applying means for applying a load to a predetermined portion of
Out of the DUT when a load is applied to the
Sound detection means for detecting the sound
Comparison determination means for determining by comparing with a preset value
Abuts on the lower surface of the DUT supported by the support means.
So that it contacts with the lower surface of the DUT in advance.
Multiple displacement sensors whose plane flatness was determined and the
Product is supported by supporting means and multiple displacement sensors are tested
Load the product on the specified location of the
Multiple displacement sensors when a load is applied by weight addition means
Output and multiple required displacement sensors
The flatness of the contact surface with the lower surface of the DUT
Having flatness calculating means for calculating flatness
A floor panel testing device characterized by the following: