JPS63131047A - Diaphragm testing machine - Google Patents

Abstract

PURPOSE:To obtain data of an endurance test of a diaphragm itself and feed it back to designing of a die to be formed, vulcanizing rubber or the like, by arranging sets of filter plates and diaphragms alternately between upper and lower plates with the surface and back thereof opposite to each other. CONSTITUTION:Filter plates 1-5 are arranged sequentially from top to bottom and diaphragms 101-104 are inserted alternately between the filter plates 1-5 being sandwiched by adjacent ones with the surface and back of the filter plates 1-5 and the diaphragms 101-104 opposite to each other and, then, the work is fixed firmly across the thickness with a bolt 8 running between upper and lower plates 6 and 11. A hanging ring 9 is fixed on the upper plate 6 and the lower plate 11 is fixed on a floor surface 12 through a support 7 to form a testing machine 17. Varying amplitudes are applied to the diaphragms by introducing air into a space between the diaphragms 101-104 and the filter plates 1-5 or a boundary space or connecting air units for exhausting, thereby enabling the performing of any complicated 3-D bending test for the diaphragms.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a test machine for testing diaphragms used in dehydrators, pumps, etc.

[Conventional technology]

JIS has standards for physical testing methods for vulcanized rubber, including test methods such as tensile, hardness, aging, compression, immersion, and ozone deterioration, and there are also various unique methods such as combustion tests and strong acid tests. I'm doing an exam.

Mechanical properties are measured from samples made of the same material as rubber molded products, and tests such as oil resistance, heat resistance, and low-temperature oil resistance are conducted to determine whether the products meet the material and environmental conditions that come into contact with the rubber. Certified as durable.

In the tensile test of physical testing of vulcanized rubber, dumbbell-shaped No. 3 test pieces are often used, No. 1 test piece is for /J1 elongation, and No. 2 test piece is for samples with small tensile strength. use

From these, tensile strength, elongation, and tensile stress are obtained as test values, and in the case of hardness tests, they are expressed as Ha values, and the rate of change in values before and after heating under variable temperature of circulating air in a furnace. There is also an aging test method that looks at the difference in changes.

The compression set test is performed by heat-treating the test piece while it is compressed and calculating the strain rate.

Since the above test method uses samples, it cannot be applied directly to test values for molded products. Complex three-dimensional bending occurs in the product, and due to the shape of the object in contact, slippage and corrosion caused by the material, and their interval groups, these factors act in combination, so the test value for the test piece described above is Although it serves as a reference value for product design, it is caused by a large margin of error.

As a means to solve this problem, a method of directly testing products is often used for rubber tires, gaskets, rubber pipes, general ammunition, etc.

[Problem that the invention seeks to solve]

To test a molded rubber product, it is necessary to obtain test values that clarify the mechanical properties and components of the product, but tests using test pieces are possible by using the several methods described above. be. However, when it comes to rubber molded products, it is necessary to test them under conditions similar to those in which they will actually be used.
There is a problem in that it is impossible to design a product unless data on durability is obtained, and the coefficients to be selected in product design and the materials to be used for design judgment are not available. As a matter of course, there was no satisfactory testing machine for the diaphragm shown in the present invention.

[Means for solving problems]

A flat lower plate is provided with a support and fixed to the floor surface, a filtration plate 5, a diaphragm, and a filtration plate 2 are provided above the lower plate, and the front and back directions of the filtration plate 2 and the diaphragm are alternately reversed above this. A plurality of sets are provided, and an upper plate is provided at the top end, and the lower plate, the filter plate, and the upper plate are firmly connected so that the contact surfaces do not move, and the space or boundary between the diaphragm and the filter plate 2 is A diaphragm testing machine capable of performing a complex three-dimensional bending test on a plurality of diaphragms by communicating an air unit that introduces or exhausts air into a space.

The air unit is equipped with a pressure gauge with contacts and an electromagnetic manifold, which is connected to the control panel to detect the number of times the diaphragm is bent and the introduced air pressure. The air source of the air unit and the electromagnetic manifold communicate with each other so that air can be introduced into or exhausted from the space formed by the diaphragm and the filter plate and the field space.

In this way, data from durability tests of the diaphragm itself, which is the molded product, can be obtained and fed back into the design of the molding mold, vulcanized rubber, etc.

〔Example〕

The present invention will be explained in detail with reference to Figs. 1 to 5.0 tangent surface 16
Arrange filter plates 1, 2.5, and 4.5 in order from the top with filter plate 1.
Insert the diaphragm 101 between the filter plates 3 and 2, and then insert the diaphragm 102 between the filter plates 3 and 4 in the same way.
Each of the diaphragms 101 to 104 is sandwiched between filter plates 1 to 5, and their entire thickness is firmly fixed with bolts 8 between an upper plate 6 and a flat lower plate 11.

A hanging ring 9 is fixedly provided on the upper plate 6, and the lower plate 11 is attached to the floor surface 1.
The entire test machine 17 is constructed on the top of the test machine 2 via the support 7. The contact surface 16 sandwiching the diaphragm 101 or the filter plate 2,
The contact surface 10 of No. 3 is a flat surface and is in direct contact.

Diaphragm 101 and other 102, 103, 104
are of the same shape and do not change in shape, but the diaphragm 101 is fixed to the filter plate 2 by means of protrusions 15 so as not to shift.

Taking the diaphragm 101 as an example, air is introduced into the field space 14 to narrow the space 13, and this narrowed space 15
Switch on the valve that controls the air introduced into AK. That is, the diaphragm 101 is forced to have an uneven amplitude using air pressure.

In Fig. 1, the filtration plates 1 to 5 and diaphragms 101 to 104 are tightened vertically with bolts 8, but the upper plates may be pressed by the thrust of a cylinder, or a lever mechanism may be used. , the filter plates 1 to 5 are assembled and disassembled using the suspension ring 9, but the screw/pinion gear type/
A cylinder type or other lever mechanism can be used.

These are selected appropriately depending on the frequency of patches to be tested and the equipment environment of the testing location. The illustrated example in FIG. 1 is for a case where there is cargo handling equipment, and if there is no cargo handling equipment around the test machine 17, the test machine 17 itself is equipped with paulownia wood that can self-operate. Therefore, the 0th order diaphragm 1
The control means for the unevenness amplitudes of 01 to 104 will be explained in detail. Whether to provide the air unit 18 or the air source 21 is determined on a case-by-case basis.

The test material 17 is shown in the schematic diagram shown in FIG. 3. The structure is such that the concave space 13 of the diaphragm 101 can be filled with granules 22 obtained by granulating a cake of sludge that has been primarily dehydrated. Actually, this grain 22 is dehydrated, but this test machine 17
Do not fill. This is because only the repeated durability test of the diaphragms 101 to 104 is performed. This diaphragm 10 is installed at the top stage where the diaphragm 101 is provided.
1 has a field space 14 on the back side and a space 16 on the surface side.0 An introduction pipe 19 is connected to this field space 14, and an introduction pipe 2 is connected to the space 13.
0 are provided consecutively. As a result, the diaphragm 101 can be made to vibrate unevenly using the air pressure and its amount, and the number of these amplitudes is counted and the time, number of times, dimensions of the reciprocating motion, etc. to be oscillated are used as basic numbers.

The air from the air source port 21 to the air unit 18 is purified by the air filter 24, passes through the pressure reducing valve 25, and then the air pressure is detected by the pressure gauge 26 with the gauge cock 31, and the air enters the supply pipe 34. Fill up.

In order to supply or exhaust air to the boundary space 14 or the space 13 of the diaphragm 101, a supply pipe 64 and an inlet pipe 1 are provided.
9.20 are provided in communication with each other via an electromagnetic manifold 23.29 and a speed controller 27.30.

A pressure gauge 28 with a contact point is provided in the introduction pipe 19, and the pressure in the field space 14 is detected as a detection signal and transmitted to a control panel (not shown).

Air supply or exhaust to the inlet pipe 19.20 is selected by an electromagnetic manifold 23.29, and the amount of air supplied is controlled by a speed controller 27.30. Although the diaphragm 101 has been described above, the other diaphragms 102, 103, and 104 have the same structure and function, and are provided with multi-stage and multi-row introduction pipes.

The exhaust ports 52, 55 are also communicated with the inlet pipe 19, 20 by switching the electromagnetic manifolds 23, 29, and the supply and exhaust of air can be switched freely depending on the operation signal from the control panel and the ON contact.

The factors to be tested are cycle time, stroke, air pressure, and fluids such as air, such as water, oil, gas, and powder particles. The cycle time is based on seconds and may be on the order of tens of days, and for diaphragm durability, deterioration, and deformation, JIS physical test methods are used for each case, or original test piece data is obtained. 0 [Effects of the Invention] As described above, the test machine was provided with an air circuit for holding the diaphragms 101 to 104 and supplying or exhausting air, and the unevenness amplitude of the diaphragm was forcibly made.
It is now possible to obtain durability test data for molded diaphragms based on air pressure, volume, switching frequency, etc.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the present invention, and FIG. 2 is a view from arrow A in FIG. 1.
-A, Figure 3 shows the air circuit of the air unit.

Claims (1)

[Claims] A flat lower plate is provided with a support and fixed to the floor surface, a filtration plate 5, a diaphragm, and a filtration plate 2 are provided above the lower plate, and the front and back directions of the filtration plate 2 and the diaphragm are alternately reversed above this. A plurality of sets are provided, and an upper plate is provided at the top end, and the lower plate, the filter plate, and the upper plate are firmly connected so that the contact surfaces do not move, and the space or boundary between the diaphragm and the filter plate 2 is A diaphragm testing machine capable of performing a complex three-dimensional bending test on a plurality of diaphragms by communicating an air unit that introduces or exhausts air into a space.