JPS63135841A - Marked line tracking of colored sample for tension test and sample - Google Patents

Abstract

PURPOSE:To enables employing marked lines of white even when white color fails to contrast sufficiently against the fundamental color of a test piece, by applying the marked lines of white on a test piece having white-based fundamental color. CONSTITUTION:Marked lines 2 of while are applied on a test piece 1 having white- based fundamental color and markings as black based color bands 3 and 4 are applied on the top and bottom sides of both the marked lines separately. Then, the test piece 1 is grasped between an upper clamp 13 and a lower clamp 16 and a marked line tracking device 8 is set as opposed to each of the marked lines 2. Here, an irradiation light R1 from a light source 9 is reflected on the white marked lines 2 and the reflected light R2 thereof is projected on a light receiving block 10 through a clearance L between shielding plates 5 and 6. As the clamp 16 moves in the direction of the arrow H, the test piece 1 is pulled in the direction of the arrow D, which causes the marked lines 2 to move from the initial position being extended along the length thereof. So, the rate of changes in the marked lines is detected with the block 10, an output signal of which is sent to a motor to always catch an image being extended along the length thereof by opening the shielding plates 5 and 6. This enables measurement of a distance between the upper and lower marked lines.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for tracking colored samples of rubber, synthetic resin, etc. used in tensile tests and the like, and to the samples.

(Prior Art) The present invention relates to an improvement of JP-A-60-33028.

In this prior art, since the basic color of the test piece itself is black or gray, the gauge line was marked in white.

However, if the basic color of the test piece is white, yellow, red, etc., marking the marked line in white has the disadvantage that it is difficult to track the marked line smoothly because the color contrast is insufficient.

(Technical Problem) The present invention was developed in view of the shortcomings of the prior art. Even when the white color of the marking line cannot contrast sufficiently with the basic color of the test piece, the white color can be improved. The technical challenge is to enable the adoption of marked lines.

(Technical means) In order to solve the above technical problem, the present invention marks a test piece with a white basic color with a white gauge line,
It is designed so that only the image of the white marked line is captured at all times by marking black bands on both sides and relative movement of a pair of shield plates separately provided during marking line tracking.

Specifically, as shown in the illustrated embodiment, the configuration is as follows.

1 is a dumbbell-shaped test piece made of rubber, plastic, etc., and has a light white basic color.

Other colors such as yellow or red may also be used.

2 is a white gauge line marked at a certain distance on the upper and lower parts of the test piece I, respectively.

Reference numerals 3 and 4 indicate a pair of black color band portions which are marked on both sides above and below the white marked line 2.

Reference numerals 5 and 6 are shield plates placed in front of the light-receiving block, which will be described later. , the image of the colored obi part (
3A, 4A), so that the image 2A of the reference line 2, which is always white, is projected onto the light receiving block.

7 is a screw screw to which a shield plate (5, 6) is screwed, and the upper threaded part 7A and lower screw part 7B are respectively reverse threaded, and when the screw punch 7 rotates in the direction of arrow A, the shield plate 5 moves in the direction of arrow B, and the shield plate 6 is designed to move in the direction of arrow C.

- Use a wooden screwdriver 7 to remove the upper and lower shielding plates (5, 6).
) are configured to operate respectively.

Reference numeral 8 denotes a marked line tracking device, and two identical devices are employed to track the upper marked line 2 and the lower marked line 2, respectively.

The marked line tracking device 8 is designed to constantly track the white marked line 2 in the direction of the arrow E as the test piece I is pulled in the direction of the arrow.

The above-mentioned marking plates (5, 6) are incorporated into a part of the marking line tracking device 8, and are white markings whose position and vertical width change as the test piece 1 is stretched in the direction of the arrow mark based on the tensile test. In order to capture and expose only the wire 2, the screening plates (5, 6) are moved in the directions of arrows F and G while being moved in the direction of arrow E.

R1 is the irradiation light emitted from the light source 9 of the mark tracking device ff18, and it is a white mark! The reflected light R2 reflected by a2 is made to directly or indirectly enter the light receiving probe 7 10 as a test piece image.

In this embodiment, the reflected light R2 is a condensing lens system v29 reflecting mirror W
The light is made to enter the light receiving block 10 indirectly through the light receiving block 10 .

vI is a condensing lens system on the irradiation light side.

As shown in FIGS. 6 and 7, in this light receiving block 10, longitudinal component photoelectric converters P and Q, which are a combination of a group of optical fibers 11 as a light receiving section and a light receiving element 12, are arranged in the vertical direction. .

As shown in FIG. is projected onto the light-receiving block 10, and the image 2A of the white marked line 2 is the white plate (5, 6).
The vertical component is projected onto the photoelectric converter (P, Q) by means of a gap in between.

On the other hand, almost all but a part of the images (3A, 4A) of the color band parts (3, 4) are shielded by the shielding plates (5, 6).

The output signal of this light receiving block 10 is outputted to the motor M that drives the screw punch 7 through the longitudinal component photoelectric converter (P, Q) and the amplifier R, and is always used to capture the image 2A. This allows the plates (5, 6) to move relatively.

Therefore, the longitudinal component photoelectric converters (P, Q
) has linear photoelectric characteristics, constantly captures the image 2A of the marked line 2, detects the amount of change in elongation of this image 2A that changes as the test piece l is pulled, and detects the amount of change in the elongation of this image 2A in response to this. An output signal is sent from the block 10 to the motor M to relatively open the shield plates (5, 6) to constantly track and capture the image 2A.

Furthermore, it goes without saying that the entire standard tracking device 8 moves in the direction of the arrow E in response to the change in the position of the marked line 2 as the test piece 1 is pulled.

The length of the upper half of the image 2A of the marked line 2 is sensed by the vertical component photoelectric converter P, and the length of the lower half is sensed by the vertical component photoelectric converter Q. The output signal from block 10 drives motor M, which rotates screw 7 and operates to capture image 2A at all times. Reference numeral 13 indicates an upper clamp, and 14 indicates a load cell, which is attached to the uncut portion 15.

Reference numeral 16 denotes a lower clamp which is moved in the direction of the arrow H by the rotation of the screw punch 17 via the gear head 18 to pull the test piece 1.

(for production) The above technical means works as follows.

A white gauge line 2 is marked on a test piece l having a white base color, and black color bands (3, 4) are respectively marked on both sides of the top and bottom.

After that, the test piece 1 is placed in the upper clamp 13 as shown in FIG.
and the lower clamp 16.

Next, the marked line tracking device 8 is set to face the marked line 2. At that time, the irradiated light R1 from the light source 9 is reflected by the white marker line 2, and the reflected light R2 is reflected by the shield plate (5, 6).
The image is projected onto the light receiving block 10 as an image 2A through the interstitial space.

Next, the tensile test is started and the lower clamp 16 is moved to the arrow H
When moving in the direction, the specimen l is pulled in the direction of the arrow.

Therefore, since the marked line 2 moves from its initial position while its vertical width is expanded, the standard tracking device 8 also moves in the direction of the arrow E in response to the movement.

Additionally, as the vertical width of the marker m2 increases, the vertical width of the image 2A also changes, so the vertical component photoelectric converters (P, Q) of the light receiving block 10 detect this rate of change, and in order to cope with this change, the vertical width of the image 2A changes. The output signal from the light receiving block 10 (P, Q) is sent to the motor M, and the shield plates (5, 6) are relatively opened to constantly capture the image 2A whose vertical width is expanded.

In this manner, a tensile test is performed, and the distance between the upper and lower gauge lines 2 is measured.

(Effects) The present invention has the following unique effects.

(a) Even if the test piece has a light color such as white, yellow, red, etc., the basic color can be marked with a black color band to use a white gauge line and track the gauge line. .

(b) Expose and capture the image 2A by opening the relative distance between the pair of skewer plates (5, 6) in response to the change in the length of the image 2A based on the elongation of the vertical width of the gauge line 2. This made it possible to perform highly accurate measurements.

[Brief explanation of the drawing]

Fig. 1 is a front view of a test piece according to the present invention, Fig. 2 is a front view showing the relationship between a pair of shield plates and a test piece image projected onto a light receiving block, and Fig. 3 is a front view of a test piece according to the present invention. FIG. 4 is a plan view showing the positional relationship with the light receiving block, and FIG. 4 is a schematic side view showing the relationship between the test piece and the marked line tracking device. FIG. 5 is a schematic plan view of the marked line tracking device, FIG. 6 is a front view of the light receiving block, and FIG. 7 is a side view of the light receiving block. l...Test piece, 2...Marked line, 2AφΦ・image 3.
4... Color obi part, 5, 6... Shiihei board IO...
・Light receiving block, 8... Mark line tracking device P, C1...
・Longitudinal component photoelectric converter patent applicant: Toyo Seiki Seisakusho Co., Ltd.・－－、、－：
”2J

Claims (2)

[Claims] (1) Mark a white gauge line 2 on a light-colored test piece 1 such as white, yellow, or red, and mark black color bands (3, 4) on both sides above and below it. with the marked line 2
A method of tracking a marked line of a colored sample in a tensile test, etc., in which an image 2A of is captured by relative movement of a pair of shielding plates (5, 6) and projected onto a light receiving block 10. (2) A white gauge line 2 was marked on a test piece 1 of a light color such as white, yellow, red, etc., and black colored bands (3, 4) were marked on both sides of the above and below. Colored samples for tensile tests, etc.