JPH09318406A - Evaluation testing machine for belt for conveyance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an evaluation testing machine by which a belt for conveyance can be evaluated properly by a method wherein the sandwiching and holding pressure of a drive-side belt and that of a follower-side belt are adjusted and a speed irregularity in the conveyance operation of an object to be conveyed is detected. SOLUTION: A drive-side belt 1a and a follower-side belt 1b as objects to be evaluated are stretched across a drive pulley 10 and an idler pulley 11 as well as across an idler pulley 12 and an idler pulley 12. Lengths of the belts are adjusted by adjusting the distance between shafts, a shaft load Fa is adjusted, and widths of the belts are adjusted by replacing the pulleys and by adjusting the interval between a driving mechanism and a support mechanism. The upper position and the lower position of a support part are adjusted, and a load F is adjusted from the upper part of the belt 1b. Speed irregularity meters 15, 16, 17 detect respective speed irregularities of an object 2 to be conveyed, of the belt 1a and of the belt 1b. Their measured results are frequency-analyzed by an FFT(fast Fourier transform) analyzer, and change data on a speed and that on a speed change rate are found. In addition, the object 2, to be conveyed, which is connected, by a wire, to a load cell on an extension line in its conveyance direction is fed between the belts 1a, 1b, and a pulling-into force which is detected by the load cell is analyzed and detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tester for evaluating a belt used for transporting an object to be transported such as a prepaid card or a bill.

[0002]

2. Description of the Related Art When conveying a conveyed object such as a prepaid card or a banknote, a conveyor belt is placed between the driving side belt and the driven side belt to sandwich the conveyed object, and the conveyed object is conveyed by rotating the belt. The device is being used. In such a transport device, if the transport speed of the transported object is not constant, an error may occur in the reading of magnetic information in the prepaid card and in the determination of the bill. Further, if the force to pull in the transported object is too weak, reliable transportation cannot be performed. Regarding the speed unevenness and the conveying force (conveyed object pulling force) for conveying the conveyed object, various characteristics of the driving side belt and the driven side belt have a great influence. Evaluation is extremely important.

In this evaluation, it is conceivable to set the measuring equipment in the actual machine of the above-mentioned conveying device and measure the speed unevenness and pulling force of the conveyed object to evaluate the belt, but it is used only in the conveying device. If it is not a belt, it will not be a big problem to measure with an actual machine like this, but if you do not know what kind of conveyance device the belt will be used under and under what conditions, On the other hand, it is not possible to carry out a test on an actual machine, and when measured with some kind of actual machine, it can only be evaluated under limited conditions such as the belt size and rotation speed of the actual machine. Evaluation is difficult.

For this reason, conventionally, as shown in FIG. 6, the belt 1 is suspended and rotated on a biaxial tester, and the belt 1 at this time is rotated.
The speed fluctuation rate is measured by the speed non-uniformity meter 5, or the difference between the rotation angles read via the rotary encoders of the two pulleys 10 and 11 with the belt 1 as shown in FIG. 7 is measured by the rotation angle difference meter 7. The measurement was performed, and these measurement results were used as a substitute characteristic for the uneven transport speed of the transported object.

Regarding the characteristic relating to the pulling force,
As shown in FIG. 8, the coefficient of friction between the transported object 2 and the belt 1 is pulled by pulling the weight 80 via the spring scale 8 in a state where the transported object 2 and the belt 1 are overlapped with the weight 80. Was measured, and the value calculated based on this friction coefficient was used as a substitute.

[0006]

In this case, in many cases, it is not possible to correlate the evaluation test result with the evaluation of the belt of the user of the conveyor using the belt. There is a demand for an evaluation test that can reliably obtain a correlation. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an evaluation tester for a conveyor belt that can appropriately evaluate the conveyor belt.

[0007]

SUMMARY OF THE INVENTION The present invention, however, uses a driving mechanism for a driving belt, a supporting mechanism for the driven belt, an adjusting mechanism for the axial load of both belts, a driving belt and a driven belt. A mechanism for adjusting the clamping pressure of an object to be conveyed, a detection means for detecting speed unevenness of the belt when the drive side belt is driven by the drive mechanism, and a speed unevenness when the object to be conveyed conveyed by the both belts is detected. It has a first feature in that it is provided with a detecting means for operating the drive belt, a drive mechanism for the driven belt, a support mechanism for the driven belt, an axial load adjusting mechanism for both belts, and the drive belt. The second characteristic is that the mechanism for adjusting the holding pressure of the conveyed object by the driven belt and the force detection means for detecting the pulling force applied to the conveyed object by the both belts are provided. .

[0008] It is possible to measure and evaluate the speed unevenness of the transported object and the pulling force applied to the transported object while the transported object is actually transported.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of the present invention will be described. FIGS. 3 to 5 show an evaluation tester according to the present invention. A drive mechanism 30 for the drive belt 1a is installed at one end of the bed 3, and a support mechanism 40 for the driven belt 1a is installed at the other end of the bed 3.

The drive mechanism 30 is provided with two mounts 31 and 32, and on the mount 31 a motor 35 to which the drive pulley 10 of the drive pulley 10 for the drive side belt 1a and the idle pulley 11 is connected. Is mounted, and the support portion 33 of the idle pulley 11 is mounted on the frame 32. And both the above-mentioned mounts 31, 32
Are both installed on the linear guide 34 on the bed 3, and the pedestal 32 has an adjusting handle 39 screwed into a screw shaft 38 provided at one end thereof. Rotate 38, mount 3
The distance between 1, 32, that is, the drive pulley 10
The axial distance between the idle pulley 11 and the idle pulley 11 is variable. The drive pulley 10 driven by the motor 35
The rotation speed of is variable. It is preferable that the drive torque applied to the drive pulley 10 can also be adjusted.

The support mechanism 40 is mounted on the base 41 which is arranged on the bed 3 via the slide mechanism 45.
Two pedestals 42 and 43 are arranged through 6 and each pedestal 4
2, 43 holds the support portions 44, 44 of the two idle pulleys 12, 12 for the driven belt 1b, and the support mechanism 40 is driven by the slide mechanism 45 including the linear guide 45a and the screw shaft 45b. The distance from the mechanism 30 is variable, and the linear guide 46a
And the screw shaft 46b, the distance between the mounts 42 and 43, that is, the idle pulley 1
The distance between the axes 2 and 12 is variable. Also each pedestal 4
Supporting portions 44, 44 are attached to the reference numerals 2, 43 respectively so as to be adjustable in vertical position, and the vertical position of the driven portion 1b can be adjusted by adjusting the vertical position of the supporting portion 44.

In the tester, the belts to be evaluated are set as the driving side belt 1a and the driven side belt 1b and are bridged between the drive pulley 10 and the idle pulley 11 and between the idle pulleys 12 and 12. The belt size can be adjusted by adjusting the distance between the shafts, and the shaft load Fa can also be adjusted. Regarding the widths of the belts 1a and 1b, the pulleys are replaced and the drive mechanism 30 by the slide mechanism 45 is used.
By adjusting the distance between the support mechanism 40 and the support mechanism 40, the widthwise centers of the belts 1a and 1b facing each other in the vertical direction can be aligned. Further, by adjusting the vertical position of the support portion 44 with respect to the mounts 42 and 43, the load F applied from above to the driven belt 1b arranged above the driving belt 1a can be adjusted. In the figure, 14 is a load cell for measuring the axial load Fa, and although not shown, this evaluation tester also has a load cell for measuring the load F.

Regarding the speed unevenness when the transferred object 2 is transferred by the belts 1a and 1b, as shown in FIG. 1, a speed unevenness meter for directly detecting the speed unevenness of the transferred object (card in the illustrated example) 2 is used. In addition to 15, the speed unevenness meter 16 for detecting the speed unevenness of the driving side belt 1a and the speed unevenness meter 17 for detecting the speed unevenness of the driven side belt 1b are used as the measuring means, and the above-mentioned object being conveyed is conveyed. Each of the speed irregularities is measured, and the measurement result is subjected to frequency analysis through, for example, an FFT (Fast Fourier Transform) analyzer to accumulate the speed and the temporal change of the speed change rate as data. Axial load Fa
It is possible to easily deal with the measurement under the condition that the load F is changed and the measurement under the condition that the belt size is changed.

When measuring the pull-in force, as shown in FIG. 2, the load 2 is connected between the belts 1a and 1b by a wire or the like and is fed to the load cell 18 installed on the extension of the belt 1a and 1b between the belts 1a and 1b. The analysis is performed by analyzing the force detected by the load cell 18 at this time. The pulling force is greatly affected by the clamping pressure of the conveyed object 2 by the two belts 1a and 1b, which can be evaluated under various conditions by adjusting the load F. Although the load cell 18 is used as the force detecting means, it goes without saying that another force detecting means may be used.

3 to 5 show a state in which the load cell 18 and the transported object 2 are connected to each other for measuring the pull-in force, and the transported object 2 is separated from the load cell 18 when the speed unevenness is measured. Measurement in the closed state.

[0016]

As described above, according to the present invention, it is possible to measure and evaluate the speed unevenness of the transported object and the pulling force applied to the transported object when the transported object is actually transported. Therefore, the evaluation test data having a strong correlation with the evaluation on the user side can be obtained. In addition, since it has a mechanism for adjusting the axial load of both belts and a mechanism for adjusting the clamping pressure of the conveyed object by the driving side belt and the driven side belt, it is possible to perform belt evaluation tests under various conditions, Appropriate and reliable evaluations of belts can be made.

[Brief description of drawings]

FIG. 1 is an explanatory diagram when measuring velocity unevenness in an example of an embodiment of the present invention.

FIG. 2 is an explanatory diagram when measuring the pull-in force of the above.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view of the above.

FIG. 5 is a right side view of the above.

FIG. 6 is an explanatory diagram of a conventional speed unevenness measurement.

FIG. 7 is an explanatory diagram when another velocity unevenness is measured.

FIG. 8 is an explanatory diagram at the time of measuring a friction coefficient that substitutes for the conventional pulling force.

[Explanation of symbols]

 1a Drive side belt 1b Driven side belt 2 Transported object

Claims (2)

[Claims] 1. A driving mechanism for a driving belt, a supporting mechanism for a driven belt, an adjusting mechanism for an axial load of both belts, and an adjusting mechanism for a holding pressure of a conveyed object by the driving belt and the driven belt. A detection means for detecting speed unevenness of the belt when the drive side belt is driven by the drive mechanism, and a detection means for detecting speed unevenness of the conveyed object conveyed by the both belts. Characteristic conveyor belt evaluation tester. 2. A driving mechanism for the driving belt, a supporting mechanism for the driven belt, a mechanism for adjusting the axial load of both belts, and a mechanism for adjusting the clamping pressure of the conveyed object by the driving belt and the driven belt. And a force detecting means for detecting a pulling force applied to the object to be conveyed by the both belts.