JP2655679B2 - Property testing machine for agglomerates - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICABILITY In the design and operation of equipment in the industry that handles powder and granules, the powder and granules agglomerate due to their own weight and the like. It is necessary to measure various characteristics in advance and consider them so as to be able to cope with them.

The present invention relates to a property tester for agglomerated powdery granules, which is used to test physical properties of the agglomerates as agglomerates.

2. Description of the Related Art Conventionally, it has been necessary to measure the physical properties of agglomerates of agglomerates such as tensile rupture properties and shear rupture properties.Conventionally, each measurement was performed using a separate property tester. Was.

Problems to be Solved by the Invention In the measurement by such an individual property tester, the equipment for the measurement occupies a large area, and both the measured values are for the same agglomerated powder. To do so, it was necessary to correct or adjust for differences between the test machines.

Means for Solving the Problems The present invention solves this problem by installing the load transducer necessary for both tests on a fixed base so that the load transducer can be shared as a single unit, and tensioning the load transducer. The problem is solved by easily setting each of the test instrument and the shear test instrument on the movable table.

Effects The present invention can selectively use a tensile test instrument or a shear test instrument for a single load transducer, and can easily perform each property test.

Embodiment FIGS. 1 to 3 show an embodiment of the present invention. In the figure, a fixed base 2 and a movable base 3 having a horizontal surface are provided on a machine body 1.

Two fixed frames 4,4 are provided on the fixed base 2, and rails 5,5 made of two linear bars parallel to the horizontal plane of the fixed base 2 are attached to the fixed frames 4,4. These rails 5,5
Is provided with a carriage 7 via a ball bearing slider 6 so as to be linearly movable. A load converter 8 for converting a load change into an electrical change is provided on the carriage 7, and the electrical change is derived as a load signal via a conducting wire 9.
The conducting wire 9 is provided through a long groove 10 so as to be movable in accordance with the movement of the carriage 7.

The carriage 7 is provided with a projecting piece 11 which is spaced from the carriage 7 in the direction of linear movement of the carriage 7.
By actuating limit switches 12 and 13 provided on the fixed base 2 at a first point near and a second point farther from the first position, a role of a stopper is obtained. The linear movement of the carriage 7 is performed by a wire 17 wound by a motor 16 via a pulley 14 and a winding drum 15, and a tension spring 20 engaged with a pin 18 of the carriage 7 and a pin 19 of the fixed base 2. Will be

The movable table 3 can be moved in a direction orthogonal to the direction of linear movement of the load transducer 8 with respect to the fixed table 2. In the illustrated example, the movement is on a straight line as can be seen by comparing FIG. 2 and FIG. However, it may be on an arc for the reason described later.

By moving the movable table 3 as described above, the movable table 3 can set two set positions where the lines are aligned in the linear movement direction of the load transducer 8, and one of the set positions is a tensile test instrument 21.
Is installed, and the shear test device 22 is installed at other setting positions.

In the setting position shown in FIG. 2, the tensile test device 21 is positioned on the mounting table 23 fixed to the movable base 3 by abutting on a flange 24 and positioned and fixed on the mounting table 23. A movable portion 26 that moves and moves parallel to the horizontal plane of the movable base 3, and the movable portion 26 connects between a pin 27 provided on the movable portion 26 and a hook 28 provided on the load converter 8. However, it is connected to the load converter 8 by a connecting member 29 which is a spring. Reference numeral 30 denotes a member necessary for setting the tensile test instrument 21 at a set position, and a detailed description thereof will be described later.

The shearing test device 22 includes a fixed member 31 fixed to the movable base 3 and a movable member 32 which is placed on and moves on the fixed member 31 at the set position shown in FIG. Is connected to the hook 28 of the load converter 8 via a connecting member 33 which is a wire.

The movable table 3 moves from the set position shown in FIG. 2 to the set position shown in FIG. 3 because of the ball bearing sliders 34, 34 provided on the movable table 3 and the linear rails 35,
According to 35, since both setting positions need only be able to set one of the two test instruments 21 and 22 in line with the linear movement direction of the single load transducer 8, one point on this linear movement direction line The movable table 3 may be guided with respect to the fixed table 2 so as to move a rail on an arc around the center, and it is also possible to freely select which test instrument to set at both set positions. However, the present invention is not limited to this.

In addition, the machine body 1 includes a motor 17 in which the wire 17 is wound and the load in the forward direction for applying a load to the load converter 8, and the motor 16 rewinds the wire 17 and the load converter 8 is returned to its original position by a tension spring 29. Motor speed setting units 36, 36 that can individually adjust the speed in the reverse direction, a motor control switch 37 for selecting stop and forward or reverse of the motor 16, a power switch 38 for the test machine and its display lamp 39, a load converter There is provided a display 40 for displaying the value of the load signal from 8 and an output terminal 41 for outputting the load signal to the outside of the machine. The motor control switch 37 cooperates with the first point limit switch 12 and the second point limit switch 13 to prevent malfunction.

4 to 6 show the details of the tensile test instrument 21. FIG. The tension test device 21 is a movable part 26 which is a moving part.
And a fixing portion 25 for fixing to a movable base (not shown). Both portions 25 and 26 form a vertical concave bottomed cylindrical portion 44 having a projection 43 on a bottom surface 42, and this concave portion 44 is It is divided by a division surface 45 passing through the axis, and the division surface 45 is installed at a set position so as to be orthogonal to the linear movement direction of the load transducer 8 at the set position, as shown in FIG. The projections 43 are for ensuring breakage along the division surface 45 during the tensile test.

In order to form the agglomerated powdery material to be tested in the tensile test device 21, the two portions 25, 26 are integrated by using bolts 46, 46, and the vertical bottomed cylindrical concave portion 44 is strengthened. An annular member 49 is fitted to the furan # 47, 47 provided at the upper end of the concave portion 44 as shown in FIG. 6 to form the concave portion 44 as an extended concave portion. Then, a predetermined weight is placed thereon to form agglomerates. Thereafter, the annular member 49 is removed and excess powder is scraped off to form agglomerate powder to be tested.

In order to install the tensile test device 21 formed with the agglomerate powder to be tested at a set position as shown in FIG. 2, a mounting hole 48 in the fixing portion 25 is used. First, the fixture 25 for tensile test is brought into contact with the flange 24 of the installation base 23 fixed to the movable base 3 and is positioned using the mounting hole 48 to fix the fixing part.
The tensile test instrument 21 including 25 is attached to the installation stand 23. Next, the bolts 46, 46 connecting the fixed part 25 and the movable part 26 are formed.
However, the tensile test cannot be performed if the agglomerates of the agglomerate to be tested are broken at the dividing surface 45 during the drawing operation.
To prevent this, move the movable part 2 while removing the bolts 46, 46.
6 needs to be pressed against the fixing part 25 and placed. For that purpose, the member 30 described above is used. Members not shown
A press using spring force is interposed between 30 and the movable part 26. After the extraction operation is completed, the pressing device is removed, and the connecting member 29 is loosely connected between the pin 27 of the movable portion 26 and the hook 28 of the load converter 8. This completes the test preparation.

In the tensile test, the motor 16 is driven in the forward direction of the load transducer 8 after adjusting the speed in the forward and backward directions by the motor speed setting units 36, 36, and the load applied to the movable unit 26 is gradually increased. Load transducer 8
The position of the second point limit switch 13 is set so that the aggregated powder breaks along the division surface 45 before reaching the second point limit switch 13 from the position of the first point limit switch 12. . The change in load during that time is converted into an electrical change by the load converter 8 and displayed as a load signal, and the change in load over time can be recorded as an output signal from the output terminal 41 as necessary.

In general, the tensile test result is obtained at the inflection point where a sudden load drop due to rupture occurs in the time-dependent load change, so it is better to make the time-dependent load change up to that point a gentle rise to detect the inflection point Often, a spring is used as the connector 29 for that purpose.

7 to 10 show the details of the shear test device 22. FIG. Shear test device 22 is a movable member that is a moving part
It comprises a fixed member 32 fixed to a movable base (not shown).

The fixing member 31 has a projection 51 on a horizontal surface 50, and is provided with two mounting holes 52, 52, and these mounting holes 52, 52 are provided.
Are provided in the direction orthogonal to the line connecting.

The movable member 32 has a projection 55 on a horizontal surface 54, two mounting rings 56, 56 are provided on one side end, and a connecting member 33, which is a wire, is attached to the mounting ring. As shown in FIG. 3, it is for connecting to the hook 28 of the load converter 8. An arrow 57 is provided at the center of the surface of the movable member 32 opposite to the horizontal plane 54. When the arrow 57 is made to cooperate with the two mounting holes 52, 52 and the two marks 53, 53 of the fixed member 31, the movable member 32 projects from the fixed member 31 with respect to each other.
When placed so that the horizontal surface 54 having the 55 and the horizontal surface 50 having the projections 51 face each other, the mark serves as a mark when the centers of both members 31 and 32 are aligned.

In order to form the agglomerated granules to be tested in the shear test device 22, the granules 58 are stacked while being leveled on the horizontal surface 50 having the projections 51 of the fixing member 31, and movable on the granules 58 The horizontal surface 54 having the protrusion 55 of the member 32 is placed with its center aligned while viewing the arrow 57. At that time, the projections 51, 55 of both members 31, 32
Are directed to hold the powder 58 in the test. After the placement, the insufficient weight is placed on the position of the arrow 47 of the movable member 32 in consideration of the own weight of the movable member 32, and the weight between the movable member 32 and the corresponding fixed member 31 is determined by their weight. 58 is the agglomerate, but the agglomerate after removal of the weight is to be tested.

Since the above is performed at the set position of the shear test device 22, the connecting member 33 of the movable member 32 is loosely connected to the hook 28 of the load transducer 8 as shown in FIG. This completes the test preparation.

Since the shear test is the same as the tensile test in the manner, description thereof is omitted.

In general, the shear test results are determined by the inflection point at which the load changes gradually with time, and the load on the granules moves slowly even after shearing, so the load change with time until reaching this point is as sharp as possible. It is better to raise the angle to detect the inflection point, and therefore, a wire is used as the connector 33.

In addition, the tension spring 20 engaged with the pin 18 of the carriage 7 and the pin 19 of the fixed table 2 not only serves for the backward movement of the load transducer 8 but also causes the tensile breakage and shearing of the aggregated powder. Although the reaction of the load transducer 8 at the time of breakage is mitigated, the change in the tension must be considered in the measurement of the load change.

Effects of the Invention Since the present invention is configured as described above, the following effects can be obtained.

According to the characteristic tester of claim (1), it is possible to easily measure the tensile rupture characteristics and the shear rupture characteristics that need to be known for the agglomerate powder using a single load converter. The occupied area can be reduced in the same way, and the same result can be used for the same agglomeration of the agglomerate of the granules without modifying or specially adjusting the difference between the test machines.

In the characteristic tester of claim (2), the tensile test device 21 is a device in which the same agglomerated powder is easily formed in agglomerating the granular material, and the above effect is further promoted. is there.

In the characteristic testing machine according to claim (3), the shear test device 22 is a device in which the same agglomerated powder granules are easily formed in agglomerating the granules, which further promotes the above effects. It is.

[Brief description of the drawings]

FIG. 1 is a front view of a property tester for agglomerated powder granules of the present invention,
2 is a plan view thereof, FIG. 3 is a partial plan view when the movable table is moved to another setting position in FIG. 2, and FIG. 4 is an enlarged front view of a tensile test instrument used in the present invention. , FIG. 5 is a plan view thereof, FIG. 6 is a partially longitudinal front view in which an annular member for filling powder and granular material is fitted into the II section of FIG. The figure is an enlarged front view of the shear test device used in the present invention, FIG. 8 is a plan view thereof, FIG. 9 is an enlarged plan view corresponding to the shear test device of FIG. 3, and FIG. B
FIG. In the figure, 2 ... fixed table, 3 ... movable table 8 ... load converter, 21 ... tensile test equipment 22 ... shear test equipment, 29,33 ... connecting tool

Claims (3)

(57) [Claims] A fixed stage (2) and a movable stage (3) having a horizontal surface, a load converter (8) installed on the fixed stage (2) and linearly moving between two points parallel to the horizontal surface; When the movable table (3) is moved relative to the fixed table (2) in a direction orthogonal to the linear movement direction of the load transducer (8), the movable table (3) is aligned with the linear movement direction. ), A tensile test instrument (21) having a portion which is set at one of the set positions on the movable table (3) and moves in parallel with the horizontal plane, and the movable table (3). 3) A shear test instrument (22) having a portion installed at the other set position above and moving parallel to the horizontal plane, and each of the test instruments (21, 22) moves at each set position. A connecting member (29, 33) for connecting the portion to the load transducer (8) in the direction of its linear movement. Characteristics tester boomer granular material to symptoms. 2. The tension test device (21) comprises a movable part (26) serving as the moving part and a fixed part (25) fixed to the movable base (3) at the set position. Both parts (25, 26) form a vertical bottomed cylindrical recess (44) with a projection (43) on the bottom surface (42), and are divided by a dividing surface (45) passing through the cylindrical axis of the recess (44). The dividing plane (45)
2. The characteristic testing machine for agglomerated powdery granules according to claim 1, wherein is perpendicular to a direction of linear movement of the load converter. 3. A movable member (32) having a projection (55) on a horizontal surface (54) serving as said moving part and said movable table (3) when said shear test device (22) is in said set position. Fixing member (3) which is fixed and has a projection (51)
1) wherein said movable member (32) is said fixed member (31)
The characteristic tester for agglomerated powder granules according to claim 1, wherein the horizontal surfaces (50, 54) having the projections (51, 55) face each other.