JP2505877Y2 - Universal test equipment - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention relates to a universal testing device,
And more particularly to a universal testing device capable of preventing the leakages scattering and accommodating liquid by breakage of the liquid storage bag as the test body.

[0002]

2. Description of the Related Art Conventionally, a universal testing apparatus has been disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 217239/1990, a pressing means for pressing a test body, a driving means for driving the pressing means, a sensor for detecting a load applied to the test body by displacement by the pressing means, 2. Description of the Related Art There is known a universal test apparatus including a control unit for controlling a pressure unit, and a display unit for displaying the control content of the control unit and a detection result of the sensor. Further, in Japanese Patent Laid-Open No. 5-34215, a computer starts measurement based on a load applied by a manual universal testing machine and collects measurement data from the measuring machine for a predetermined load. A predetermined calculation is performed based on this sampling data, various numerical values and a related chart are displayed on the display device based on the calculation information, and are also stored in the storage device, and are stored in the storage device of the load applied by the testing machine. When the ratio to the maximum load is reduced, the measurement of one test piece is finished, and the series of processes is repeated until a predetermined number of test pieces are finished, and then a table of test results and a relationship diagram are output by a printer. An automatic measuring method using a manual universal testing machine is disclosed.

[0003]

By the way, for example, in order to test the durability of a bag for containing a liquid, a pressure is applied to the bag in the liquid containing state so as to gradually increase its size.
A bag breaking test is performed to detect the pressure at which this breaks. Here, if the bag containing the liquid is torn at once, the contained liquid may scatter and stain the surroundings .

The present invention has been made in view of the above problems, and an object of the present invention is to provide a universal testing device capable of preventing the contained liquid from scattering and leaking due to the breaking of a liquid containing bag as a test body. Is to provide.

[0005]

In order to achieve the above object, the invention of claim 1 is for mounting a mounting table on which a test body containing a liquid is mounted and for pressing the test body on the mounting table. In a universal testing device that is equipped with a pressing member and is capable of pressing a test body by changing the distance between the two ,
The cradle main body of the mounting table to be placed and the cradle main body enter
Hollow for positioning the pedestal body on the upper surface of the base
Part, the groove part where the liquid from the destroyed test piece flows, and
And at the time of destruction of the test piece due to pressing around the groove
The outer edge of a specified height that prevents the liquid from splashing around
The cover member provided, the peripheral side surface of the pedestal body, and the cover.
A seal that seals the gap between the bar member and the inner surface of the hollow part.
And a ruler member . Ma
The invention of claim 2 is the universal testing device of claim 1.
And approaching the cradle body to press the test body
Contacting the outer peripheral surface of the pressing member, the outer peripheral surface and the outer edge
Prevents liquid from splashing upward through the gap between the inner surface of the part
A rib member made of a flexible material is provided on the outer edge portion.
It is characterized by having.

[0006]

EXAMPLE An example applied to a universal testing apparatus suitable for the bag breaking test of the liquid containing bag of the present invention will be described below.
FIG. 1 is a front view of a universal test apparatus according to the present embodiment, and FIG. 2 is a right side view thereof. The universal testing apparatus includes a universal testing machine main body 1 and a controller unit 2 provided on a side of the testing machine main body. First, the universal testing machine body 1 will be described. The universal testing machine main body 1 has a housing portion 5 such as a servomotor 3 and a pressure sensor 4 main body at a lower portion.
A slide plate 9 is mounted on the receiving portion 5 by two ball screws 6, 7 and guide rods 8, 8 extending vertically upward, and the ball screws 6, 7 and the guide are mounted on the upper portion. A cover 10 for positioning the upper ends of the rods 8, 8 is formed. Then, a cradle unit 11 for placing a test body on the upper wall of the accommodation section 5
Has been fixed. A pressing table 9a is fixed to the lower surface of the slide plate 9.

The lower end of one of the ball screws is connected to the servo motor 3 via a reduction gear device. Further, the ball screws are connected at their lower end portions inside the accommodating portion 5 and at their upper end portions inside the cover portion 10 via connecting gears, respectively. The slide plate 9 is screwed to these ball screws. As a result, when the servo motor 3 operates, the slide plate 9 moves up and down while being guided by the guide rod.

FIG. 3 is a partial sectional perspective view of the cradle unit 11. The cradle unit 11 includes a hollow cylindrical cradle main body 12 having a circular upper wall portion serving as a specimen mounting portion and placed on the upper wall of the accommodation portion 5, and a cradle main body 1.
2 and a cover member 13 for preventing the stored liquid from scattering around when the liquid storage bag is broken.
It has and. In the hollow inside of the cradle body 12,
A pressure receiving shaft 14 of the pressure sensor 4, which is, for example, a load cell, housed in the housing part 5 extends through a hole formed in the upper wall of the housing part 5, and its tip end is the back surface of the upper surface of the cradle body 12. Is in contact with Thus, the load applied to the test body placed on the upper wall of the cradle main body 12 can be detected by the movement of the pressure receiving shaft 14 due to the deflection of the upper wall of the cradle main body 12. The cover member 13
Is an inner cylinder portion 15 having a positioning hollow portion into which the cradle main body 12 enters, a hollow cylindrical outer cylinder portion 16 surrounding the inner cylinder portion 15, and an inner surface of the outer cylinder portion 16 and It has an annular connecting portion 17 that connects the outer surface of the tubular portion 15. The outer surface of the inner cylindrical portion 15, the upper surface of the annular connecting portion 17, and the outer cylindrical portion 1
6 The liquid containing bag, which is a test sample, breaks into the annular groove formed by the outer surface, and the contained liquid that has leaked out flows into the annular groove. A drain hole is formed, and a drain port 18 is formed on the outer wall of the outer cylinder 16 corresponding to the hole.
Further, in the illustrated example, the liquid in the above-described groove is filled with the drain port 18.
The upper surface of the annular connecting portion 17 is formed so as to become lower toward the drain opening 18 so as to be smoothly discharged from the container (see FIG. 2). In addition, the drain port 1 is usually used.
8 is used by connecting a drain pipe (not shown).
A link-shaped seal member 19 is attached to an inner surface portion of the inner tubular portion 15 that faces the peripheral surface of the cradle main body 12. An annular lip 20 having a free end extending above the connecting portion is attached to the upper edge of the outer tubular portion 16. The lip 20 is formed of a flexible material, preferably an elastic material (for example, rubber material).

FIG. 4 is an explanatory view showing a state in which pressurization is started on the liquid storage bag A as a test body. As can be seen from this figure, the pressing table 9a on the lower surface of the slide plate 9 has a circular concave portion formed on the lower surface, and the lower surface of the concave portion and the upper surface of the upper wall of the cradle main body 12 are in contact with each other. The test body is pressurized between them. The inner diameter L ₁ of the flange portion around the circular recess is set to be slightly larger than the outer diameter of the inner cylindrical portion 15 of the cover member 13, and the outer diameter L ₂ is set to the outer cylindrical portion 16 of the cover member 13. The lip 20 is set so that a large gap does not occur between the lip 20 and the lip 20, and preferably, the lip 20 can be hermetically sealed. As a result, at the time when the pressing of the test piece is started by approaching the receiving table body 12 of the pressing table 9a, the lip 20 of the cover member 13 is almost in close contact with the outer periphery of the flange portion of the pressing table 9a. A substantially closed space is formed by the base 9a, the lip 20, the inner and outer cylindrical portions 16 and the connecting portion of the cover member 13,
Even if the liquid storage bag A as a test body breaks momentarily, the stored liquid does not scatter outside this space. The height of the flange portion is set so that the lip 20 of the cover member 13 can be brought into close contact with the outer periphery of the flange portion of the pressurizing table 9a at the time when the pressurization of the specimen is started in this way. It is desirable to set the thickness more than the original thickness.

Next, the controller unit 2 will be described. The controller unit 2 of this embodiment is shown in FIG.
As shown in the figure, a button 21 for inputting numerical values for setting test conditions, test selection buttons 22, 23, 24 for selecting any one of a bag breaking test, a repetition test and a constant pressure test,
The universal tester main body 1 includes a speed control shooting 25 for adjusting the elevation speed of the slide plate 9, an emergency stop shooting 26, a test start button 27, a liquid crystal display 28, and a printer 29. In addition to receiving these buttons, taking images, and the like, signals from the pressure sensor 4 of the universal testing machine main body 1 and the like are received inside the printer 29, the liquid crystal display 28, and the universal testing machine main body 1 as well. A control unit for controlling the servo motor 3 and the like is housed. Figure 5
It is a block diagram of this control part. The control unit includes a servo motor drive circuit 30, an operation controller 31 to which the above-mentioned buttons and shooting, and further, a liquid crystal display 28 are connected, a servo motor drive circuit 30 and an operation controller 31, and a pressure sensor 4. And a main controller 32 connected to the printer 29. The main controller 32 includes a CPU with a RAM (random access memory) and a ROM (read only memory) attached thereto, and outputs a control signal to each unit by executing a control program stored in the ROM. Or capture detection signals. In addition, three keys (F1, F1) provided in addition to the numerical value input keys in FIG.
2, F3) are keys which are used when, for example, the test conditions set by using the numerical input buttons are read out and executed, and the test conditions stored in the RAM or the like are read out. Reference numeral 40 in FIG. 5 is an interface for connecting the main controller 32 to a personal computer (not shown).

The operation of the universal test apparatus configured as described above will be described. First, the test condition is input using the test selection key and the numerical value input key. 6A is an explanatory diagram showing an example of a time change of a load applied to a test body in a bag breaking test, FIG. 6B is a repeated test, and FIG. 6C is a constant pressure test.

In the bag breaking test, as shown in FIG. 6 (a), for example, the slide plate 9 of the universal testing machine is lowered at a constant speed adjusted by the speed control photographing 25 of the controller unit 2, and the specimen is tested. Is detected using the detection output of the pressure sensor 4 (for example, it is determined that the bag has broken due to the change in the detection load from an increase to a decrease), and the pressure is increased. This is a test for measuring the peak value of the immediately preceding load, or for measuring whether or not a bag break occurs by pressing the test body until the peak load reaches a preset value.

In the former type of bag breaking test, there are no specific test conditions other than the descending speed of the slide plate 9. Therefore, for example, after pressing the test selecting key 22 for the bag breaking test, the enter key 33 is pressed. By pressing, the program is presumed to be regarded as the former type of bag-breaking test using the speed corresponding to the adjustment position of the speed control photograph 25 when the enter key 33 is pressed. In the latter bag-breaking test, following the pressing of the test selection key 22 for the bag-breaking test, the above-mentioned peak load is input from the numerical value input key,
When the enter key 33 is pressed, the program is programmed to be regarded as the latter type of bag breaking test using the speed corresponding to the adjustment position of the speed control shooting 25 when the enter key 33 is pressed. Here, the input test conditions are stored in the RAM of the CPU together with the type of test.

The repetition test is, for example, a test in which a pressurizing pattern is repeated between times t _{0 and} t ₁ as shown in FIG. For example, in the illustrated example, pressurization starts (t
₀ ) to a first load value P ₁ , and the load value P ₁
Load value P ₃ upon detection by the pressure sensor 4 that reaches the
Lowering the pressure until, that has reached the該荷load value P ₃ from detection by the pressure sensor 4 T ₁ hour just to maintain the load, increasing the pressure to load value at the time T ₁ elapses is P ₂ ,
該荷only load value ₂ hours T from detection by the pressure sensor 4 that reaches P ₂ is maintained the load, lowering the pressure to load value at the time of the T ₂ elapses becomes 0, the該荷heavy value 0 Then, one pattern ends here, and the second pressurization is continued with the same pattern. In the case of this example, following the pressing of the test selection key 23 for the repetitive test, using the numerical value input key, the load value P ₁ , the duration time 0, the load value P ₃ , the duration time T ₁ , the load value P ₂ , the continuation By pressing the enter key 33 alternately while pressing the enter key 33, such as time 0, load value P ₃ , and duration T ₂ , and entering the number of repetitions as necessary, the enter key is entered. The program is programmed so as to be regarded as a repetitive test using the speed corresponding to the adjustment position of the speed control shooting 25 when the button 33 is pressed. Here, the input test conditions are stored in the RAM of the CPU together with the type of the test.

In the constant pressure test, for example, as shown in FIG. 6C, a predetermined load P is continuously applied for a predetermined duration T or until a bag break occurs, and the presence or absence of a bag break during that period is measured. It is a test. In this test, following the pressing of the test selection key 24 for the constant pressure test, the overload value P and, if necessary, the duration T are input using the enter key 33, respectively. It is programmed so as to be regarded as a constant pressure test using a speed corresponding to the adjustment position of the control shooting 25. Here, the entered test conditions are also determined by the RA of the CPU together with the type of test.
Stored in M.

After selecting the type of test and inputting the test conditions according to the procedure corresponding to the program as described above, the test specimen is placed on the cradle main body 12 of the universal testing machine, and the test starts. The instruction to start the test is given by, for example, pressing the start button after pressing the test selection key. As a result, the servo motor 3 is controlled while reading the detection output of the pressure sensor 4 based on the test conditions stored together with the type of test, and the test body is pressed to perform the test. Further, the history of the load on the test object is graphically displayed in real time based on the output of the pressure sensor 4 during the test. That is, the graphs themselves shown in FIGS. 6A to 6C are displayed. Then, for example, as described in accordance with the upper right area of FIG.
The peak value P of the load immediately before the breakage of the bag, the time t ₁ from the start of pressurization to the occurrence of the breakage,
Is displayed on the liquid crystal display 28.
It is preferable that the actual screen of the liquid crystal display 28 also displays these calculated values together with the graph of the load history as shown in FIG.

In any of the tests, when it is found from the detection output of the pressure sensor 4 that the test piece is broken during the test, the load peak value immediately before the bag is broken is displayed at that time. Then the test ends.

After the test is completed, the graph and the like displayed on the liquid crystal display 28 are automatically printed by the printer 29, and the servo motor 3 is controlled to slide to a height that does not hinder the mounting of the next test object. The plate 9 is raised. It should be noted that the rise of the slide plate 9 after the end of this test and the fall of the slide plate 9 after the start of the test until the pressurizing table 9a of the slide plate 9 comes into contact with the test body to start pressurization can reduce the test time. For speed control shooting 2
It is performed at a relatively high speed different from the speed setting by 5.

As described above, according to this embodiment, in the cradle unit 11, since the cover member 13 is provided around the cradle main body as the mounting table on which the liquid containing bag A as the test body is mounted, the liquid is stored. It is possible to prevent the liquid that is scattered when the storage bag A is broken, from scattering to the outside of the cover member 13.

[0020]

[0021]

According to the invention of claim 1 or 2,
Since a cover member was provided around the table,
The scattering of the stored liquid caused by the breakage of the liquid storage bag
If it can be restricted to the outer edge of the material to prevent scattering outside the device
In both cases, the scattered liquid is collected in the groove provided in the outer edge.
Thus, it is possible to discharge to the outside through a predetermined route. Ma
In addition, by the sealing member,
Seal the gap between the inner surface of the hollow part of the cover member and
This allows liquid from the ruptured bag to pass through the gap.
This prevents leakage up to the top surface of the substrate and spreads inside the device.
Wear. Particularly, according to the invention of claim 2, the test body is pressed.
Therefore, the outside of the pressing member should be close to the cradle body.
The peripheral surface is made of a flexible material provided on the outer edge of the cover member.
The outer peripheral surface and the inner surface of the outer edge portion by contact of the rib member
To prevent upward liquid splash through the gap between
Thus, the entire cover member can be made relatively small.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a universal test apparatus according to an embodiment.

FIG. 2 is a right side view of the test apparatus.

FIG. 3 is a partially sectional perspective view of a part of the test apparatus.

FIG. 4 is an explanatory diagram of the operation of the test apparatus.

FIG. 5 is a block diagram of a control unit of the test apparatus.

FIG. 6A is an explanatory view of a bag breaking test using the test apparatus. (B) is an explanatory view of a repeated test using the same test apparatus. (C) is an explanatory view of a constant pressure test using the same test apparatus.

[Explanation of symbols]

 Universal testing machine 2 Controller unit 9 Slide plate 9a Pressurizing stand 11 Receiving stand unit 12 Receiving stand main body 13 Cover member 15 Inner cylinder part 16 Outer cylinder part 17 Annular connection part 18 Drain port part 20 Lip

Claims (2)

(57) [Scope of utility model registration request] 1. A mounting table on which a test body containing a liquid is mounted, and a pressing member for pressing the test body on the mounting table, and the test body can be pressed by changing the distance between them. In a universal testing apparatus, a cradle main body of the mounting table placed on the upper surface of the base, and the cradle main body on the upper surface of the base into which the cradle main body enters
Positioning hollow part, liquid from destroyed test piece flows
The groove part to be pushed in and the test around the groove part by pressing.
Predetermined to prevent liquid from splashing around when the specimen is destroyed
A cover member having an outer edge of height, a peripheral side surface of the cradle body, and the hollow portion of the cover member.
A universal testing device comprising: a seal member for sealing a gap between the inner surface and the inner surface . 2. The universal test apparatus according to claim 1, Before approaching the cradle body to press the test body
In contact with the outer peripheral surface of the pressing member, and in the outer peripheral surface and the outer edge portion
Prevents upward liquid splash through the gap between the surfaces
A rib member made of a flexible material is provided on the outer edge.
Universal testing device characterized by