TWM543365U - Bending test device - Google Patents

Description

Bending test device

The present invention relates to a bending test device, and more particularly to a bending test device that provides a buffer space by a resilient structure to avoid cracking of the tested sheet body.

With the development of technology and the advancement of the times, flexible wafers that can be placed on various flexible electronic products (for example, flexible screens) have appeared on the market. In general, the flexible wafer must be tested for tolerance to bending prior to the actual placement of the flexible wafer by the specific bending test device. In the conventional bending test device, most of the time, after the flexible wafer is clamped between the two clamps, the flexible wafer is repeatedly bent along the cylindrical limit cylinder. However, since the tension applied by the jig to the flexible wafer will increase with the degree of bending of the flexible wafer, the flexible wafer is likely to be broken by tension during the test.

Therefore, it is an important issue for those skilled in the art how to prevent the flexible wafer from being broken due to the tension pull during the bending test.

In view of this, the present invention provides a bending test device having an elastic structure, which can offset the tension of the clip pulling the sheet body by the elastic force provided by the elastic structure, thereby reducing the probability of the sheet being broken during the bending test.

The present invention provides a bending test device suitable for testing a piece of body. The bending test device comprises a swing arm guiding unit, a second clamping device, a tension device and at least one limiting plate. The swing arm guiding unit comprises a first clamp, an elastic structure and a force arm. The first clamp holds one side of the sheet. The elastic structure is configured to provide an elastic force when the first clamp moves in a first direction, and the elastic force pulls the first clamp in a second direction. The arm is fixed to the elastic structure. The second clamp holds the other side of the sheet. The tension device pulls the second clamp in the first direction to tighten the sheet body, thereby driving the first clamp to move in the first direction to generate a buffer space in the elastic structure. The limiting plate is movably attached to the sheet body. The force arm drives the first clamp and the elastic structure to reciprocate along a curve based on an axis to repeatedly bend the sheet along the limiting plate. The first direction is perpendicular to the line on the curve.

Other embodiments of the aforementioned bending test apparatus are as follows. The wafer is a flexible wafer. The buffer space varies with the degree of bending of the sheet on the limit plate. The buffer space is proportional to the degree of bending. The limiting plate includes a first limiting plate and a second limiting plate. The first limiting plate and the second limiting plate are respectively movably adhered to the two sides of the piece, and the first limiting plate and the first limiting plate The two limit plates are disposed opposite each other. The limiting plate comprises a plane, a curved surface and a sloped surface, the plane is closely attached to the sheet body, the curved surface is connected between the plane and the inclined surface, and the sheet body is partially bent and conformed to the inclined surface along the curved surface.

The aforementioned bending test device may further comprise a lens for automatically capturing the viewing sheet. The first clamp and the second clamp respectively have a first clamp And a second clamping block, the first clamping block being detachably connected to the second clamping block. A non-magnetic soft spacer may be disposed between the first clamping block and the second clamping block. The tension device is a cylinder.

100‧‧‧Bending test device

105‧‧‧Piece

110‧‧‧Swing arm guiding unit

112‧‧‧Servo motor

120‧‧‧First fixture

1201‧‧‧First clamp

1202‧‧‧Second clamp

122‧‧‧Structural structure

124‧‧‧

126‧‧‧Axis

128‧‧‧ Curve

130‧‧‧Second fixture

1301‧‧‧First clamp

1302‧‧‧Second clamp

135‧‧‧Rear device

1401‧‧‧Limited board

1402‧‧‧Limited board

142‧‧‧ rodless cylinder

1441‧‧ ‧ cylinder

1442‧‧ ‧ cylinder

150‧‧‧ buffer space

160‧‧‧ lens

210‧‧‧Clamps

212‧‧‧ mandrel

214‧‧‧Linear bearings

216‧‧ ‧ spring

218‧‧ ‧Flap

220‧‧‧ screws

310‧‧‧ plane

320‧‧‧ Surface

330‧‧‧Bevel

D1‧‧‧ first direction

D2‧‧‧ second direction

D3‧‧‧ third direction

1 is a schematic view of a bending test device according to an embodiment of the present invention.

Fig. 2 is an enlarged view showing the elastic structure according to the embodiment of Fig. 1.

Figure 3 is a side view of the position limiting plate according to the embodiment of Figure 1.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, these practical details should not be used to limit the novel. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, some of the conventional structures and elements are illustrated in the drawings in a simplified schematic manner, and the repeated elements may be represented by the same reference numerals.

1 is a schematic view of a bending test apparatus 100 according to an embodiment of the present invention. In the present embodiment, the present bend test apparatus 100 is adapted to test a sheet 105 (eg, a flexible wafer or other bendable sheet-like object). The bending test device 100 includes a swing arm type guiding unit 110, a second clamp 130, a tensioning device 135, a limiting plate 1401, and a limiting plate 1402. Swing arm The guiding unit 110 includes a first clamp 120, an elastic structure 122 and a force arm 124. The first jig 120 holds one side of the sheet body 105. The force arm 124 is fixed to the elastic structure 122. The second jig 130 holds the other side of the sheet body 105. The limiting plate 1401 and the limiting plate 1402 are movably adhered to the sheet body 105, and the limiting plate 1401 and the limiting plate 1402 are disposed opposite to each other.

The first clamp 120 may have a first clamp 1201 and a second clamp 1202, and the first clamp 1201 is detachably coupled to the second clamp 1202. In addition, a soft spacer may be disposed between the first clamping block 1201 and the second clamping block 1202 to prevent the wafer 105 from being broken by the clamping of the first clamping block 1201 and the second clamping block 1202. Similarly, the second clamp 130 may have a first clamping block 1301 and a second clamping block 1302, and the first clamping block 1301 is detachably coupled to the second clamping block 1302. In addition, a soft spacer may be disposed between the first clamping block 1301 and the second clamping block 1302 to prevent the wafer 105 from being broken by the clamping of the first clamping block 1301 and the second clamping block 1302.

The elastic structure 122 is configured to provide an elastic force when the first clamp 120 moves in the first direction D1, and the elastic force pulls the first clamp 120 in the second direction D2. Please refer to FIG. 2 , which is an enlarged view of the elastic structure 122 according to the embodiment of FIG. 1 . In the present embodiment, the elastic structure 122 includes a clamping block 210, a spindle 212, a linear bearing 214, a spring 216, and a blocking piece 218. The linear bearing 214 can be fixed to the force arm 124. The clamping block 210 can be connected to the second clamping block 1202 via a screw 220. One end of the mandrel 212 may be provided with a blocking piece 218, and the other end of the mandrel 212 may be fixed to the clamping block 210 after passing through the spring 216 and the linear bearing 214 in sequence. In the aspect of FIG. 2, when the first jig 120 is pulled in the first direction D1, since the clip 210 will simultaneously move to the first direction D1 The spring 216 can be compressed by the flap 218 in the first direction D1. In this case, the buffer space 150 can be correspondingly created in the resilient structure 122. At the same time, the spring 216 can provide an elastic force that pulls the first clamp 120 in the second direction D2.

It should be noted that since the elastic structure 122 of the present invention can generate the buffer space 150 as described above, the sheet body 105 can be effectively prevented from being broken by the pulling of the first jig 120 and the second jig 130 during the repeated bending process. . Please refer to the following pages for specific instructions.

Please refer to Figure 1 again. When the bending test device 100 is used to test the sheet 105, the following steps can be performed: (1) clamping the two sides of the sheet 105 with the first jig 120 and the second jig 130; (2) pulling the device 135 (eg, a cylinder) pulls the second clamp 130 in the first direction D1 to tension the sheet 105, thereby driving the first clamp 120 to move in the first direction D1 to generate a buffer space 150 in the elastic structure 122 (its width is for example (3) The limiting plate 1401 and the limiting plate 1402 can slide on the rodless cylinder 142 toward the third direction D3 to both sides of the sheet body 105; (4) the limiting plate 1401 and the limiting plate 1402 can be Driven by the cylinders 1441 and the cylinders 1442 respectively, they are in close contact with the two sides of the sheet body 105; (5) the force arm 124 can be driven by the servo motor 112 to drive the first clamp 120 and the elastic structure 122 along the curve based on the shaft center 126. The reciprocating movement of the sheet body 105 is such that the sheet body 105 is repeatedly bent along the limiting plate 1401 and the limiting plate 1402 which are in close contact with the two sides of the sheet body 105. In one embodiment, the curvature of curve 128 may be 140 degrees or other value set by the designer as desired, and the first direction D1 is perpendicular to the line on curve 128.

It should be understood that the tension of the first clamp 120 and the second clamp 130 pulling the sheet 105 will follow the sheet 105 on the limiting plate 1401 and the limiting plate. The degree of bending of the upper portion of the 1402 is increased and increased. However, since the elastic structure 122 of the bending test apparatus 100 is provided with the spring 216, the above tension will be reflected in the degree of compression of the spring 216. That is to say, the greater the degree of bending of the sheet 105, the greater the above tension and the greater the degree of compression of the spring 216. As the degree of compression of the spring 216 becomes larger, the buffer space 150 also becomes larger. In short, the buffer space 150 is proportional to the degree of bending of the sheet 105. In this case, the spring force provided by the spring 216 can be used to counteract the above tension, thereby effectively reducing the probability that the tension will tear the sheet 105.

Please refer to FIG. 3 , which is a side view of the limiting plate 1401 according to the embodiment of FIG. 1 . In the embodiment, the limiting plate 1401 includes a plane 310, a curved surface 320, and a slope 330. The plane 310 is for abutting against the sheet 105, and the curved surface 320 is connected between the plane 310 and the slope 330. When the bending test of the sheet body 105 is performed, the sheet body 105 may be bent along the curved surface 320 and partially applied to the slope 330. In this case, the limit plate 1401 of the present invention can provide a higher bending test strength of the sheet 105 than the conventional limit cylinder. In various embodiments, the radius of the curved surface 320 is, for example, 1, 3, 5 mm, or other value set by the designer as desired.

In addition, the bending test apparatus 100 of the present invention may further include a lens 160 for photographing the sheet body 105 after the bending test of the sheet body 105 is completed, so as to be used by the relevant personnel to determine whether the sheet body 105 is damaged due to bending. .

In summary, in the case where the elastic structure is provided, the bending test device of the present invention can offset the tension of the clamp body by the elastic force provided by the elastic structure, thereby reducing the breakage of the body during the bending test. The chance. In addition, the present invention also proposes a limit plate having a special shape, thereby enabling It is enough to increase the strength of the bending test.

100‧‧‧Bending test device

105‧‧‧Piece

110‧‧‧Swing arm guiding unit

112‧‧‧Servo motor

120‧‧‧First fixture

1302‧‧‧Second clamp

135‧‧‧Rear device

1401‧‧‧Limited board

1402‧‧‧Limited board

142‧‧‧ rodless cylinder

1201‧‧‧First clamp

1202‧‧‧Second clamp

122‧‧‧Structural structure

124‧‧‧

126‧‧‧Axis

128‧‧‧ Curve

130‧‧‧Second fixture

1301‧‧‧First clamp

1441‧‧ ‧ cylinder

1442‧‧ ‧ cylinder

150‧‧‧ buffer space

160‧‧‧ lens

D1‧‧‧ first direction

D2‧‧‧ second direction

D3‧‧‧ third direction

Claims (10)

A bending test device, which is suitable for testing a piece of body, comprising: a swing arm type guiding unit, comprising: a first jig holding one side of the piece; and an elastic structure for moving on the first jig Providing an elastic force when moving in a first direction, the elastic force pulling the first clamp to a second direction; and a force arm fixed to the elastic structure; and a second clamp clamping the other side of the sheet a tensioning device, pulling the second clamp to the first direction to tighten the sheet, thereby driving the first clamp to move in the first direction to generate a buffer space in the elastic structure; and at least one a limiting plate movably abutting against the sheet body, wherein the force arm reciprocates the first clamp and the elastic structure along a curve based on an axis to repeat the sheet along the limiting plate Bending, wherein the first direction is perpendicular to the line of the curve. The bending test device of claim 1, wherein the sheet is a flexible wafer. The bending test device of claim 1, wherein the buffer space varies with a degree of bending of the sheet bent on the limiting plate. The bending test apparatus of claim 3, wherein the buffer space is proportional to the degree of bending. The bending test device of claim 1, wherein the limiting plate comprises a first limiting plate and a second limiting plate, wherein the first limiting plate and the second limiting plate are respectively movable and tightly Attached to the two sides of the sheet, and the first limiting plate and the second limiting plate are disposed opposite to each other. The bending test device of claim 1, wherein the limiting plate comprises a plane, a curved surface and a slope, the plane is in close contact with the sheet, the curved surface is connected between the plane and the inclined surface, the sheet body After being bent along the curved surface, it is partially applied to the inclined surface. The bending test device of claim 1, further comprising a lens for photographing the sheet. The bending test device of claim 1, wherein the first clamp and the second clamp respectively have a first clamp and a second clamp, and the first clamp is detachably connected to the second clamp Piece. The bending test device of claim 8, wherein a soft spacer is further disposed between the first clamping block and the second clamping block. The bending test device of claim 1, wherein the tension device is a cylinder.