KR101286350B1 - Distort test apparatus of flat surface shaped body - Google Patents

Abstract

<Problem> It is to provide the warpage test apparatus of the planar body which can test the test subject which is a wide planar body by the tensionless force repeatedly.
<Solution> Place the test object having a planar body upright, clamp the left and right ends at the four points of each part with a rocking clamp and a fixed clamp to free the space between them, and swing the center of the rocking clamp back and forth to twist the test object. A device for testing a warp of a planar body which is fixed to a base so that it can move to a swing clamp side, and two rollers are placed back and forth on a face plate connected to the swing clamp, and the tension bearing string is removed from the face plate. Extends down between the two rollers to connect to the base, while also extending the tension-bearing strap from the base, suspending the weight at its end, and shortening the left and right directions between the two clamp points based on the rocking of the rocking clamp. The tensile and compressive forces that are applied to the test object in response to elongation are determined by the fluctuation and weight of the faceplate. Absorbing a tensile load to the tension strap twisting and synchronized on both sides of, and maintaining the EUT in a tension-free warping.

Description

Distortion test apparatus of planar body {DISTORT TEST APPARATUS OF FLAT SURFACE SHAPED BODY}

The present invention relates to a warp testing apparatus for a thin planar body having a predetermined width and length. As such a planar body, there exist a liquid crystal display panel, an organic electroluminescent panel, a solar cell panel, etc., and the width may exceed 1 m. These planar bodies are warped during manufacture, transportation, storage, and construction, but when they are warped, they are generally in an armed state that receives neither tensile nor compressive forces. Therefore, it is necessary to examine the durability by carrying out a torsion test with no tension. In addition, the arming force here means the state which does not receive a tensile force nor a compressive force.

The present applicant first proposes a test apparatus that can simultaneously test bending and twisting of a linear body such as a cable, a seat belt, and a cord by armless force in Patent Document 1 below. By the way, since a planar body has a quite wide width as mentioned above, in this way, a test of distortion and bending cannot be performed, and at the same time, it cannot do it at the same time.

The test object of the planar body is erected, and the upper and lower points are clamped (free between them) by fixing clamps and rocking clamps at both ends in the width direction (left and right directions), and the clamps remain unchanged. When the test subject is swung to be inclined at an angle θ with respect to the fixed clamp, the test subject is straight wherever the cross section is held, but the whole test subject is spirally wound on the roller, i.e., twisted. Although FIG. 5 is the top view, the length L of an upper end and a lower end becomes R / cos (the length of a center), it extends by almost L-R, and is receiving the tension force by that much.

For this reason, if the object under test is twisted by oscillating in a vertical plane in which the oscillation clamp is fixed, the object under test becomes longer and receives a tensile load in which the upper side or the lower side becomes the maximum. To absorb this, one or both of the swing clamp and the fixed clamp may be moved by the changed length to shorten the gap, but in this case, the clamp of the moving side is led by the distortion of the test object. Give a tensile load to On the other hand, once the twist is turned back while the clamp on the moving side is moved, the compressive load is applied on the contrary. Therefore, by shortening or elongating these clamp point intervals with other forces, it is possible to make the object under test not to be subjected to tensile or compressive load, i.

Japanese Patent Application No. 2011-8649

According to the present invention, the shortening and elongation of the clamp point interval can be carried out by the fixed clamp (which may be a rocking clamp), and the force is applied to the test object by applying the force with the driving force to swing the test object or the tension-bearing string operated by the weight. It does not apply tension, that is, it can be twisted by an armed force.

To this end, in the present invention, as described in claim 1, the test object having a planar body is placed upright, and both left and right ends are clamped at four points of each part with a rocking clamp and a clamping clamp to free the space therebetween. A warp test apparatus for a planar body which swings the center of the test piece forward and backward to warp the test object. Two rollers in the front and rear arrangement to be axially extended so that the tension-bearing strap extends down from between the faceplates between the two rollers to connect to the base, while the tension-bearing strap extends from the base as well. Hangs and responds to the shortening and elongation between both clamp points based on the rocking of the rocking clamp. Wherein the tensile force and the compressive force applied to the test subject are absorbed by the tension to both sides in synchronization with the twisting of the tension-bearing strap due to the fluctuation and weight of the face plate, and maintain the test subject under arming force during the twist. Provide a warping test device.
In addition, in the present invention, as described in claim 2, the rocking clamp and the rocking clamp each include a U-shaped rocking channel and a rocking channel that are open on the opposite side, and the rocking clamp has an opening inward. The test piece is inserted into the swinging channel facing the test piece, and the fixing clamp provides a test device for a planar body warp, wherein the test piece is inserted into the fixing channel with the opening facing inward.
In addition, as described in claim 3, the present invention provides a warp test apparatus for a planar body in which a cup for pressing a test object is pressed into the rocking clamp and the fixed clamp, and the cup is rotatable with respect to a clamp tool. to provide.

In the present invention, as described in claim 5, the test object which is a planar body is placed upright, and both left and right ends are clamped at two points on the upper and lower sides with the rocking clamp and the clamping clamp, and the clamping clamp is rocked left and right as it is. A device for testing a warp of a planar body for testing warpage of a device, wherein the rocking clamp and the fixed clamp are formed in a link-shaped clamp that is capable of bending a plurality of links to be bent and bendable on the side of the test object. It is an object of the present invention to provide an apparatus for testing a warp of a planar body.

According to the invention of claim 1, by swinging the rocking clamp, the tensile force and the compressive force based on the shortening or elongation of the clamp point interval due to twisting or returning (returning) of the test object are forcibly applied by the tension or weight due to the rocking force of the rocking clamp. It can be pulled by moving the clamp in tension by tensioning, and as a result, it is possible to distort the subject under tension.

1 is a side view of a first example of a warping test apparatus.
2 is a sectional view taken along the line AA in Fig.
3 is a cross-sectional view showing the state of the clamp.
4 is a side view of a second example of a warping test apparatus.
5 is a plan view showing a state when the planar body is twisted.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to drawings. Fig. 1 is a side view of a warping test apparatus showing a first example of the present invention, and Fig. 2 is a cross-sectional view taken along the line AA of Fig. 1, but the test apparatus includes a bed 1 on which the apparatus is based and a bed. (1) a base (2) capable of sliding an image, a fixed clamp (4) mounted on a support (3) to be erected on the base (2), and a fixed clamp (4) In order to oscillate the oscillation clamp 5 which is installed opposite to the oscillation shaft, the oscillation shaft 6 is provided at the center thereof and is forcibly oscillated.

In addition, between the face plate 7a connected to the swing shaft 6, a separate face plate 7b provided at a predetermined interval apart from each other, and the two face plates 7a and 7b, The upper end is connected to the two rollers 8 held by the rotation of the shaft center 8a arranged by the front-rear distribution, and the pins 9 mounted on the face plate 7a, and sags past between the rollers 8. Thinning, the horizontal direction of the pulley (10) is connected to the base (2), and extends from the base (2), and likewise to the downward direction to the pulley (10) to hang the weight (11) at the bottom Tension-bearing straps 12 and the like. In this case, the roller 8 has a predetermined space | interval, and the pin is provided just above the oscillation shaft 6 in a neutral state without return.

FIG. 3 is a cross-sectional view showing an example of the state of the clamp point of the test object 13 by the fixed clamp 4 and the rocking clamp 5, but the casings 4a and 5a of the U-shaped body which are open to the mating sides, respectively. (Hereinafter, referred to as a fixed channel 4a and a rocking channel 5a), the test object 13 is inserted into the channels 4a and 5a, and bolts and the like are formed from both sides of the channels 4a and 5a. It is conceivable to tighten the clamp with the clamp tool 14 of the clamp.

In this case, the cup 15 which presses the test object 13 at the front-end | tip of the clamp tool 14 is provided, and the cup 15 and the clamp tool 14 are made to rotate freely. Even when the subject 13 is twisted (shortened between both clamps in the horizontal direction), the length of the upper and lower center portions of the subject 13 does not change, so this portion must be relatively extended. Therefore, if the test object 13 can rotate freely with respect to the clamp tool 14, this elongation will not be inhibited. In this sense the depths of the channels 4a and 5a need to be to allow this.

Next, the twisting test of the test object 13 will be described by way of example. The fixing clamp 4 and the rocking clamp 5 will be provided with four points on each side of the left and right ends of the test object 13. By clamping with the clamp tool 14, the rocking shaft 6 is rocked and rotated by a known rocking mechanism at a constant angle and speed. In this case, the rocking clamp 5 oscillates in the vertical plane about the centerline in the left and right direction, and accordingly, the test object 13 is twisted so that the top and the bottom end are inclined to the maximum in the left and right direction as described above. .

Even if it is possible to move the clamp clamp 4 as it is, the tension of the test object 13 is applied to the test object 13 as described above. Therefore, this movement is performed by the tension burden string (hereinafter, referred to as a string) 12. That is, the string 12 is tensioned by the swing of either of the face plates 7a and 7b and the fixed clamp 4 is pulled in (of course, the weight 11 is also included). 13) no tension is applied. During the warp in this manner, the test object 13 is maintained without tension. That is, the distortion of the test subject 13 is performed by the arming force.

To make this possible, the amount of elongation of the test object 13 and the amount of tension of the string 12 need to be the same. When the rocking clamp 5, i.e., the face plates 7a and 7b, swings, the roller 8 passing through the string 12 is also inclined. At this time, the string 12 is wound around the roller 8 and the pin 9 and The pulley 10 is lengthened and pulled upwards to attract the clamping clamp 4 (you may be able to move the swinging clamp 5 side or both). It is possible to adjust the diameter of the roller 8 appropriately or to adjust the set of rollers 8 up and down with respect to the face plates 7a and 7b to match the elongation amount of the test object 13 with the tension amount of the string 12. (However, since the swing is the same as before and after, the movement of the midpoint of the shaft center 8a of the roller 8 moves on the vertical line passing through this point).

At this time, although the tensile load to be loaded on the test object 13 may not be the same as the change of the swing angle, it still causes the test object 13 to be distorted, and the roller 8 is also shaken to loosen the string 12. Tighten up. Therefore, it can be said that the stretching by the twist and the tension of the string 12 are synchronously operated, and the tensile load is not applied to the test object 13 during the twist.

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On the other hand, the return of the fixed clamp 4 to the original position due to the reduction of the swing angle is also the same. In this case, the string 12 is tensioned by the weight 11. When the swing angle becomes small and the tension of the string 12 becomes loose, the weight 11 tensions the fixing clamp 4 and returns it to its original state. Moreover, the return of the fixed clamp 4 can also be made to respond | correspond strictly to the elongation of the to-be-tested object 13. Specifically, the fixed clamp 4 is returned by using a driving source in addition to the weight 11 itself or the weight 11, and synchronizing the speed and the amount with the tensile load applied to the test object 13 is described above. Same as

4 is a side view of the second example, but in this example, the support 3 is mounted floating on the bed 1, and the fixing clamp 4 is mounted directly thereto. Moreover, the rocking clamp 5 is directly attached to the rocking shaft 6, and clamps both the left and right ends of the to-be-tested object 13 with these clamping clamps 4 and the rocking clamp 5, respectively.

In this example, the fixed clamp 4 and the rocking clamp 5 are made into a bent link-shaped clamp 18 such as a chain connecting the link 16 to the pin 17, thereby linking the clamp 18. When it pulls inward, it becomes bendable. However, it is preferable to allow the curvature to be made only on the side of the test object 13, and to prevent the curvature from going out of the upright and on the opposite side of the test body 13. This is to prevent the tensile load from being applied to the test object 13 by the reaction when returning to the original state. Although not shown, a stopper piece or the like may be attached to the back of the link 16. In this way, the clamp tool 14 may clamp over the whole height of the test object 13.

The rocking shaft 6 is rocked in the above state, and the test object 13 is twisted. Also in this case, although the extension | stretching of the left-right direction which maximizes the upper and lower ends of the to-be-tested object 13 generate | occur | produces, the link-shaped clamp 18 curves and absorbs this. In addition, since the link-shaped clamp 18 bends when a tensile force acts on the test object 13, some tensile force acts up to that time, but it can be made to be almost negligible by bending it (arming force may be sufficient). ). In addition, the link-shaped clamp 18 may be only one of the fixed clamp 4 side and the rocking clamp 5 side.

On the contrary, when the swing clamp 5 is close to neutral, extension is necessary, but at this time, the centrifugal force of the link-shaped clamp 18 decreases and becomes straight from the curve (with the stopper mechanism, the curve is not further curved). Prevents load from occurring In this sense, it is suitable to provide a spring (not shown) for returning the curved one between the strut 3 and the link-shaped clamp 18. This example has the advantage that the structure is very simple and the manufacturing cost can be greatly reduced.

As mentioned above, although the fixed clamp is not rocked, it may be rocked. Specifically, the fixed clamp is forcibly rocked by the rocking shaft. In this case, it is preferable that the swinging direction is swinged on the opposite side to the swinging side of the swinging clamp 5 and synchronized. According to this, the rocking angle of one rocking clamp may be half.

1 bed 2 bases
3 Shoring 4 Fixed Clamp
4a fixed channel
5 rocking clamp 5a rocking channel
6 rocking shaft
7 Faceplate 8 Roller
9 pin 10 pulley
11 weight 12 tension string
13 Test Subject 14 Clamp Tool
15 cups 16 links
17 pin 18 link geometry clamp

Claims (6)

The test piece is placed upright, and the left and right ends are clamped at each of the four points with a rocking clamp and a fixed clamp to be free between them, and the center of the rocking clamp swings back and forth to twist the test object. As a warping test device,
The fixed clamp is placed on the base so as to be moved to the swing clamp side, and the two rollers are placed in front and rear positions on the face plate connected to the swing clamp, and the tension bearing strap is connected between the two rollers from the face plate. Extends downwardly to connect to the base, while also extending the tension-bearing strap from the base and suspending the weight at its end, corresponding to the shortening and elongation between both clamp points based on the rocking of the rocking clamp. Tension and compressive forces loaded on the test object are absorbed by the tension to both sides in synchronization with the twisting of the tension-bearing strap due to the fluctuation and weight of the face plate, and the warp of the planar body is maintained during arming by the tension. tester. The method of claim 1,
The oscillation clamp and the stationary clamp each include a U-shaped oscillation channel and a stationary channel that are opened on the opposite side,
A warp test of the planar body in which the rocking clamp inserts the test object into the rocking channel with the opening facing inward, and the lock clamp inserts the test object with the rocking channel with the opening facing inward. Device. The method according to claim 1 or 2,
And a cup for pressing the object under test into the rocking clamp and the fixed clamp, wherein the cup is twisted with respect to the clamp tool. delete It is a torsional warp test device for testing the warp of the test object by standing up the test subject, which is a planar body, and clamping the left and right ends at the two top and bottom points with the rocking clamp and the clamping clamp, and the rocking clamp is rocked from side to side as it is.
And said oscillating clamp and said fixed clamp are formed in a link-shaped clamp in which a plurality of links are pulled and bent to be bent to the side of the test object.
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