JPH02249943A - Rigidity testing machine - Google Patents

Abstract

PURPOSE:To measure the bending characteristic with regard to an article such as shoes in a state that they remain as they are by providing a holding base for a measuring object and a turntable so as to be bent centering around an axis of the end of the holding base, and measuring the force at the time of turning the turntable. CONSTITUTION:In a state that the turntable 4 is set horizontally so that the surface of a movable base 5 coincides with the upper face of a holding base 2, a measuring object K is fixed to the holding base 2 by a holding belt 3, and by rewinding a wire 13, a truck 11 is moved to the left end side of a running rail 8. Subsequently, the hook of a tension meter T is hooked to a string H, and the fitting angle to the truck 11 of an arm 12 is adjusted so that the tension meter T becomes vertical to the turntable 4. Next, by driving a motor 16 and taking up the wire 13 to a winding drum 15 at constant speed, the truck 11 is moved at the constant speed on the running rail 8 until it abuts on a stopper 18. In this state, the tension at the time of its abutting is measured by the tension meter T, a measured value is read by the display surface TD of the tension meter T, and a turning angle is measured by an angle indicator 17.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a stiffness tester for measuring the resistance force (stiffness) of an arbitrary article.

(Prior Art) Conventionally, stiffness and stiffness of thin sheet-like materials such as paper, film, and woven fabric have been evaluated.
ss) and flexibility, etc., there are Clark stiffness testers, Gurley stiffness testers, etc. as testing machines that analyze the relationship between bending load and deflection, but both are for thin sheet materials and are used for small samples of specified dimensions. This method is used to evaluate the bending properties of long, ductile materials such as metals, using a universal testing machine to measure the curved part after bending a sample of a certain size at a certain angle. Although bending test methods have been established to measure rigidity by visually inspecting for cracks, or by measuring the maximum load and deflection before breakage, The bending characteristics of objects that have become products, such as thick and flexible materials cut into special dimensions and shapes, semi-finished or finished shoes, and shoes, in their original form. No actual measurement device has been proposed for shoes or sandals, whose bending properties depend not only on the properties of the material but also on the structure.
Since bending properties are an important factor not only in determining the quality of footwear, but also in terms of foot hygiene, there has been a desire for a device that can measure the bending properties of such articles themselves.

(Problems to be Solved by the Invention) The present invention provides products such as shoe soles, thick and flexible materials cut into special dimensions and shapes, semi-finished or finished shoes, and products such as shoes. The object of the present invention is to provide an apparatus for actually measuring the bending properties of an object in its original form.

(Means for solving the problem) In a rigidity testing machine, there is a fixed holding table on which the object to be measured is placed, and a rotating shaft that can be rotated at the end of the fixed holding table by an axis parallel to the surface on which the object to be measured is placed. A moving table, a measurement object fixing means provided on a fixed holding table or a rotating table, an arc-shaped traveling rail centered on the same axis in a plane orthogonal to the axis, and a movement that moves along the traveling rail. (Operation) The present invention provides a holding table and a connecting means having a fixed length for connecting the rotating end face of the rotating means and the moving means, and a means for measuring the tension generated in the connecting means. The rotating table can be bent around the axis at the end of the holding table. Therefore, if you place the object to be measured across the holding table and the rotating table, fix the object to either the holding table or the rotating table, and rotate the rotating table, the measurement will be performed around the axis. The object will be bent. When the moving means that moves on a running rail centered on the axis and the rotating table are connected by a connecting means of a certain length and the moving means is moved, an angle formed by the pulling direction of the rotating table and the connecting means is formed. is always kept constant.

Therefore, if the tension acting on the connecting means is detected, it represents the force required to always pull the rotating table in a constant direction relative to the rotating table, and it is proportional to the resistance force when bending the object to be measured. Therefore, the stiffness of the object to be measured can be expressed by this tension.

(Example) FIG. 1 shows an example of the present invention. In Figure 1, K
is the shoe to be measured. 1 is the base on which the device is mounted,
Reference numeral 2 denotes a holding stand mounted on the base 1, which fixes and holds the front half of the object to be measured with a holding belt 3. Reference numeral 4 denotes a rotating table which is held on the holding table 2 so as to be rotatable around an axis P parallel to the holding surface at the edge of the holding table 6, and a tension point 0 on the opposite side of the axis P is connected to the It is pulled through H with a tension meter T. Reference numeral 5 denotes a movable table which is attached to the rotary table 4 so as to be slidable in the horizontal direction as shown in the figure, and on which the second half of the object to be measured is mounted flush with the holding surface of the holding table 2. Reference numeral 6 denotes a support stand which is rotatably held on the holding stand 2 around an axis Q parallel to the axis P. When the bottom surface of the object to be measured is a curved surface with the tip of the toe upward, the holding stand 2
Rotate the screw 7 screwed into the screw hole provided in the object to be measured until it touches the bottom of the object to be measured.
This is a movable part of the support base that supports the object to be measured along the shape of the lower surface of the object to be measured so that it does not move. 8 is an arc-shaped traveling rail centered on the axis P, and legs 9.10 with both ends erected on the base 1.
is held in Reference numeral 11 denotes a trolley that runs on the running rail 8 by holding the running rail 8 between three rolls R1 to R3, and has an arm 12 for fixing the tension meter T. The leftmost position of rail 8! The arm 12 is attached to the carriage 11 so that its angle can be adjusted within a small angle range so that the tension meter T is perpendicular to the rotating table 4. Reference numeral 13 denotes a wire for pulling the trolley 11, which is pulled along the running rail 8, passes through a guide pulley 14 attached to the side of the leg 10, and is wound up by a winding drum 15 attached to a motor 16. Reference numeral 17 denotes an angle indicator attached to the lower surface of the rotary table 4, and the indicator needle 17A is rotatably attached so that the tip thereof constantly points downward due to its own weight. 18 is a stopper that stops the cart 11 at a certain position.

Explaining the measurement operation.With the rotating table 4 set horizontally so that the surface of the movable table 5 matches the top surface of the holding table 2, the object K to be measured is fixed to the holding table 2 with the holding belt 3. Then, rewind the wire 13, move the trolley 11 to the left end side of the running rail 8, hook the hook of the tension meter T onto the string H, and make the tension meter T perpendicular to the rotating base 4. arm 1
2 to the trolley 11 by adjusting the angle, driving the motor 16, winding the wire 13 onto the winding drum 15 at a constant speed, and moving the trolley 11 on the traveling rail 8 at a constant speed until it abuts the stopper 18. The amount of movement (angle) of the carriage 11 is measured by measuring the tension at the time of contact with the tension meter T, reading the measured value on the display surface TD of the tension meter T, and measuring the rotation angle with the angle indicator 17. The horizontal axis is the output of the tension meter T, and the output of the tension meter T is the vertical axis, and changes in the bending force when bending the object to be measured may be recorded. It is convenient to install the same indicator as the indicator 12.

In principle, it is not necessary to fix the arm 12 to the trolley 11, but when it reaches a nearly horizontal position as shown by the chain line in Figure 1, it will sag due to the tension meter T's own weight, and the angle at which the rotating table 4 is pulled will be less than a right angle. It is fixed in place to prevent it from shifting and causing an error in the bending force. When you bend a finished product or a thick item, the outside side of the bend that touches the movable table 5 stretches, causing it to slip against the table.The friction at that time cannot be ignored depending on the material, so the The table 5 is made easily slidable by the rollers.

In the above embodiment, the tension meter T is attached to the arm 12 integrally with the trolley 11 so that the weight of the tension meter T is not applied to the rotating table 4. However, as shown in FIG. Trolley 11
The string H is mounted on the
Even if the rotary table 4 is pulled by , the same effect as in the above embodiment can be obtained.

(Effects of the Invention) According to the present invention, objects that have become products such as shoe soles, thick and flexible materials cut into special dimensions and shapes, semi-finished or finished shoes, and several shoes, etc. By making it possible to actually measure the bending properties of objects, it has become easier to improve the semi-finished products and products mentioned above, improving product development capabilities.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is a partial side view of the second embodiment. K...Measurement object, P, Q...Rotation axis, ○...Tension point, R1, R2, R3...Dolly roll, H...String, T...Tension meter, 1 ...Base, 2...Holding stand,
3... Holding belt, 4... Rotating base, 5... Movable base, 6... Support base, 7... Screw, 8... Running rail, 9, 10... Legs, 11... Trolley, 12... Arm,
13... Wire, 14... Guide pulley, 15
... Winding drum, 16... Motor, 17...
Angle indicator.

Claims (1)

[Claims] A fixed holding table on which the object to be measured is placed, a rotary table that can be rotated at the end of the fixed holding table by an axis parallel to the measuring object mounting surface of the fixed holding table, and a rotating table provided on the fixed holding table or the rotating table. a means for fixing the object to be measured, an arcuate traveling rail centered on the same axis in a plane perpendicular to the axis, a moving means for moving along the traveling rail, a rotating end surface of the rotating means, and the moving end surface of the rotating means; A rigidity testing machine characterized by being provided with a connecting means of a certain length for connecting the means, and a means for measuring the tension generated in the connecting means.