JP4532593B1 - Peel test device - Google Patents

Abstract

A peel test apparatus capable of performing a 90-degree peel test with high accuracy at a low cost and capable of handling other peel tests including a new test method that has not been conventionally used.
A peeling test apparatus 1 according to the present invention includes an adherend member 30 provided with an adherend surface 38 to which a test piece 2 is adhered and rotatably supported by a support shaft 34, and an adherend. A holding member 50 that holds one end of the test piece 2 attached to the attachment member 30, a moving mechanism 20 that relatively moves the attached member 30 and the holding member 50 apart, and a control device that controls the moving mechanism 20. 70 and a load measuring device 40 that measures a load applied to the gripping member 50.
[Selection] Figure 1

Description

  The present invention relates to a peel test apparatus used for tests such as the adhesive strength of an adhesive tape / adhesive sheet and the peel adhesive strength when two members are bonded.

  Conventionally, a peel test has been performed as a test method for measuring the adhesive strength (sticking force) of an adhesive tape / adhesive sheet and the peel adhesive strength of an adhesive or the like. As a method for performing the peel test, for example, there are a 90 degree peel test, a 180 degree peel test, a T-shaped peel test, a floating roller method, and the like. Among these, as for the test method of the pressure-sensitive adhesive tape / pressure-sensitive adhesive sheet, for example, 90 ° peel test and 180 ° peel test are defined in JIS Z 0237, and for the test method of adhesive, for example, JIS K 6854-1-4. 90 degree peel test, 180 degree peel test, T-shaped peel test, and floating roller method are defined respectively.

  When measuring the adhesive strength of an adhesive tape or the like, the 180 degree peel test is greatly affected by the strength and elastic modulus of the base material, and it is considered desirable to measure by the 90 degree peel test. However, the 90-degree peel test has a problem in that it is difficult to keep a 90-degree peel angle (an angle formed between a test plate to which an adhesive tape is attached and an adhesive tape to be pulled) constant during the test. That is, in the 90-degree peel test, one end of an adhesive tape or the like attached to a test plate is pulled in a direction that makes 90 degrees with the test plate, and the load at the time of peeling (peeling) from the test plate is measured. Since the peeling position moves laterally on the test plate as the film is peeled off, there is a problem that the peeling angle changes.

  For this reason, JIS Z 0237 introduces a technique in which a test plate is slid in the lateral direction by a peeling length such as an adhesive tape by using a dedicated jig (see Non-Patent Document 1). Specifically, as the distance between the upper grip for gripping one end of an adhesive tape or the like and the lower grip for gripping the jig with a slidable test plate increases, the jig is connected with a string. It is configured to be pulled and slid.

  In addition, instead of mechanically interlocking the peeling of the adhesive tape and the slide of the test plate, a method has been proposed in which the test plate with the adhesive tape or the like is slid with a stepping motor and a ball screw (for example, a patent) Reference 1).

JP-A-9-113438

Japanese Industrial Standard JIS Z 0237

  However, in the method described in Non-Patent Document 1, when the base material such as an adhesive tape is made of an easily stretchable material, there is a deviation between the peeling length and the slide distance of the test plate due to the extension of the tensioned adhesive tape. As a result, the peeling angle cannot be kept constant during the test. For this reason, the measurement accuracy is lowered, and the type and the peeling speed of the adhesive tape that can be measured are limited, and it is difficult to establish the 90-degree peeling test as a testing method for the adhesive tape or the like.

  Further, in the method described in Patent Document 1, it is necessary to provide a moving guide and a driving device for both the fixing portion for fixing (gripping) one end of an adhesive tape or the like and a test plate, and the measuring device is complicated and expensive. There was a problem of becoming. Although it is possible to move the test plate in consideration of the elongation of the adhesive tape, etc., it is actually difficult to predict the elongation of the adhesive tape during the test. Even if feedback control is performed by measuring the peeling angle, a complicated measurement method or control method is required, which further increases the complexity and cost of the measurement apparatus.

  In addition, unlike the method described in Non-Patent Document 1, the method described in Patent Document 1 can set a peel angle to an angle other than 90 degrees, and can perform a peel test. There was a problem that the peeling angle of the film was always fixed. That is, since it is not considered that the peeling angle is changed at an arbitrary ratio during the test, there is a need to perform an unprecedented test on the adhesiveness of an adhesive tape and the like and evaluate it from various viewpoints. There was a problem that when it occurred, it could not be handled.

  The present invention has been made in view of such problems, and performs a 90-degree peel test with high accuracy at a low cost, and also supports other peel tests including a new test method that has not existed before. It is an object to provide a possible peel test apparatus.

(1) The present invention, and the object to be sticking member which is rotatably supported on the shaft provided with the bonding surface of the test piece is adhered, the test piece said is adhered to the adhesive member A gripping member that grips one end of the gripping member, a moving mechanism that moves the adhered member and the gripping member relatively close to each other, a control device that controls the moving mechanism, and a load measurement that measures a load applied to the gripping member The gripping member and the load measuring device are fixed, and the moving mechanism moves the adherend member in a direction to approach and separate from the gripping member, with the support shaft as a center. When the adherend member is rotated, the adherend surface intersects a straight line connecting the center of the portion of the test piece gripped by the gripping member and the rotation center of the adherend member. The shape of the adherend surface is set so that the angle to be applied is always constant. The angle is characterized by an acute angle or obtuse, a peeling test device.

(2) In the present invention, the control device may change a peeling speed of the test piece for each peeling test by controlling a relative moving speed of the adherend member and the gripping member, or It is a peeling test apparatus as described in said (1) characterized by changing during one peeling test.

(3) The present invention also relates to the object to be sticking member is characterized in that the object to be bonded wear surface is configured to be removable, is a peel test apparatus described in (1) or (2) .

(4) The present invention is also a camera in which the adherend surface is made of a transparent material, and a portion where the test piece peels from the adherend surface is arranged to be observable through the adherend surface. The peeling test apparatus according to any one of (1) to (3) , further comprising:

(5) In the present invention, the pressure-bonding roll for pressure-bonding the test piece bonded to the surface to be bonded to the surface to be bonded and the pressure-bonding roll are moved and pressed against the member to be bonded. And (1) to (1), wherein the control device adjusts the pressing force of the pressure-bonding roll to the adherend member by controlling the pressing mechanism. (4) The peeling test apparatus according to any one of (4) .

(6) The present invention is also the peel test apparatus according to (5) , wherein the load measuring device measures a pressing force of the pressure-bonding roll to the adherend member.

  According to the peel test apparatus of the present invention, it is possible to perform a 90-degree peel test with high accuracy at a low cost, and it is also possible to cope with other peel tests including a new test method that has not existed before. An excellent effect can be achieved.

It is the schematic of the peeling test apparatus which concerns on embodiment of this invention. (A) It is the schematic which showed an example of the to-be-adhered member. (B) And (c) It is the schematic which showed the other example of the to-be-adhered member. (A) And (b) It is the figure which showed a part of procedure of the peeling test by a peeling test apparatus. (A)-(c) It is the figure which showed the peeling angle in a peeling test. (A)-(c) It is the figure which showed the example of the logarithmic spiral curve. (A) And (b) It is the figure which showed the case where a peeling test is performed by reversing the attachment direction of a to-be-adhered member. (A)-(c) It is the figure which showed the example which comprised the to-be-adhered member in the shape of a triangular prism. (A)-(c) It is the figure which showed the example which comprised the to-be-adhered member in the shape of a square pillar. (A)-(c) It is the figure which showed the example of the other to-be-adhered member. It is the figure which showed the example of (a) and (b) other to-be-adhered members. It is sectional drawing which showed the example provided with the camera for observing the behavior of the peeling part of a test piece in a peeling test apparatus. It is the top view which showed the example at the time of arrange | positioning a spindle in an up-down direction.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  First, the peeling test apparatus 1 according to the embodiment of the present invention will be described. FIG. 1 is a schematic diagram of a peel test apparatus 1 according to the present embodiment.

  As shown in the figure, the peeling test apparatus 1 includes a base 10, a moving mechanism 20 disposed on the top of the base 10, a member 30 to be adhered disposed on the moving mechanism 20, and a substrate to be adhered. A load measuring device 40 arranged on the base 10 so as to face the attaching member 30, a gripping member 50 connected to the load measuring device 40, and an arrangement on the moving mechanism 20 adjacent to the adherend member 30. The crimping roll 60 and the control device 70 disposed inside the base 10 are configured.

  The base 10 is a member that supports the moving mechanism 20, the adherend member 30, the load measuring device 40, the gripping member 50, the pressure-bonding roll 60, and the like and accommodates the control device 70 therein. In addition, the shape of the base 10 is not specifically limited, What is necessary is just to be able to arrange | position and support each member suitably.

  The moving mechanism 20 moves the stage 22 linearly and reciprocally in the horizontal direction. Although not shown, the moving mechanism 20 includes a linear guide that guides the movement of the stage 22 and a ball screw transmission mechanism that is driven by a stepping motor. Therefore, the moving mechanism 20 is configured to be controlled by the control device 70 to move the stage 22 at an arbitrary speed and to stop at an arbitrary position.

  On the stage 22, the adherend member 30 and the pressure roll 60 are placed. The moving mechanism 20 is arranged on the base 10 in a direction in which the adherend member 30 is moved closer to and away from the gripping member 50. Note that the moving mechanism 20 may be configured to move the stage 22 by, for example, a linear motor instead of the stepping motor and the ball screw transmission mechanism.

  The adherend member 30 is a member to which the test piece 2 such as an adhesive tape for performing a peel test is attached. The adherend member 30 is rotatably attached to a bracket 32 fixed on the stage 22 via a support shaft 34. That is, the adherend member 30 is supported by the support shaft 34 on the stage 22 and is freely rotatable about the support shaft 34.

  FIG. 2A is a schematic diagram illustrating an example of the adherend member 30. In this example, as shown in the figure, the adherend member 30 includes a cylindrical or columnar main body 30a having a support shaft as a central axis, and a plurality of test plates 36 fixed to the outer periphery of the main body 30a. It is a configured member. The outer peripheral surface of the test plate 36 is an adherend surface 38 to which the test piece 2 is attached.

  In this example, the test plate 36 has a shape in which a cylindrical member having a circular cross section is divided into four parts. The test plate 36 is detachably fixed to the main body 30a by a screw (not shown) or by engaging a part of the test plate 36 with the main body 30a. The adherend surface 38 is configured as an arcuate curved surface. Therefore, in the state where the test plate 36 is fixed to the main body 30 a, the adherend surface 38 is an arcuate curved surface parallel to the support shaft 34 and centering on the support shaft 34.

  The test plate 36 can be made of various materials such as various metals, resins, or wood depending on the content of the peel test to be performed. Moreover, the to-be-adhered surface 38 of the test board 36 can be made into various surface properties according to the content of the peeling test to perform. In the present embodiment, the test plate 36 is configured to be detachable from the adherend member 30 so that a peel test based on various test conditions can be easily and quickly performed.

  Note that the number of divisions of the test plate 36 is not limited to four, and may be other division numbers. Further, instead of dividing, the test plate 36 may be formed in a cylindrical shape. The shape of the main body 30a is not limited to a cylindrical shape or a columnar shape, and may be any other shape as long as it can be rotated around the support shaft 34 and the test plate 36 can be fixed. 2B and 2C are schematic views illustrating other examples of the adherend member 30. FIG. For example, as shown in FIG. 4B, the main body 30a of the adherend member 30 may be configured to have a shape in which one 1/4 arc-shaped test plate 36 can be fixed. As shown in (c), a half arc-shaped test plate 36 may be fixed to the main body 30a of the adherend member 30 in a shape that can be fixed.

  Returning to FIG. 1, the load measuring device 40 measures the load (tensile force) required to peel the test piece 2 adhered to the test plate 36 from the test plate 36. In the present embodiment, the load measuring device 40 is composed of a load cell. The load measuring device 40 is fixed on the gantry 12 provided on the base 10, and is arranged so that the attachment point 42 is substantially the same height as the support shaft 34 of the adherend member 30. Further, the load measuring device 40 is electrically connected to the control device 70, and the output is transmitted to the control device 70.

  The force detection method of the load detector 40 is not particularly limited, and any of strain gauge type, piezoelectric type, capacitive type, electromagnetic type, tuning fork type, and the like may be used. Moreover, in this embodiment, since the load measuring device 40 is used also for the measurement of the pressing force of the crimping | compression-bonding roll 60, the load measuring device 40 uses what can measure both tensile force and compressive force.

  The gripping member 50 grips one end of the test piece 2 attached to the adherend member 30 that is not attached. The gripping member 50 is connected to the force application point 42 of the load measuring device 40 via the rod 52. In the present embodiment, the gripping member 50 is configured so as to sandwich the end portion of the test piece 2 between the two members. The height of the center (grip center) A of the portion gripped by the grip member 50 of the test piece 2 is substantially the same as the center (rotation center) B of the spindle 34 of the adherend member 30. In addition, a gripping member 50 is disposed. Therefore, the straight line S connecting the gripping center A and the rotation center B is substantially horizontal, and is substantially parallel to the moving direction of the adherend member 30 by the moving mechanism 20.

  Note that the structure of the gripping member 50 is not limited to a structure that sandwiches the end of the test piece 2. For example, the structure of locking the test piece 2 in a hole provided in the end of the test piece 2 or a screw is used. Other structures, such as a structure for fixing

  The crimping roll 60 presses the test piece 2 adhered to the test plate 36 toward the test plate 36 so as to be crimped. In this embodiment, the press roll 60 is composed of a rubber roll. The crimping roll 60 is fixed to a bracket 62 disposed on the stage 22 through a support shaft 64 so that the center C of the support shaft 64 is centered with the center B of the support shaft 34 of the adherend member 30. It arrange | positions so that it may become substantially the same height. Therefore, the center C of the support shaft 64 of the press roll 60 is located on a straight line S connecting the gripping center A and the rotation center B.

  Further, the stage 22 is provided with a pressing mechanism 66 that moves the bracket 62 in the horizontal direction and presses the pressure-bonding roll 60 against the adherend member 30. Although not shown, the pressing mechanism 66 includes a linear guide that guides the movement of the bracket 62 and a ball screw transmission mechanism that is driven by a stepping motor, as with the moving mechanism 20.

  The control device 70 controls the operation of the moving mechanism 20 and the pressing mechanism 66 and converts the output from the load measuring device 40 into a load value for output or storage. The control device 70 includes a CPU and storage means such as a ROM, a RAM, and a hard disk. Although not shown, the control device 70 is provided with an operation panel for operating the peeling test apparatus 1 and a display panel for outputting various information such as test results.

  Note that the control device 70 may be configured separately from the peel test device 1, or a general PC may be used as the control device. Further, the control device 70 may be used only for controlling the moving mechanism 20 and the pressing mechanism 66, and the test result output from the load measuring device 40 may be output to an external processing device such as a PC.

  Next, a procedure of a peel test using the peel test apparatus 1 will be described. FIGS. 3A and 3B are diagrams showing a part of the procedure of the peel test by the peel test apparatus 1.

  In the peel test, first, the test piece 2 is attached to the adherend surface 38 of the test plate 36. At this time, after fixing the test plate 36 to the main body 30 a of the adherend member 30, the test piece 2 may be attached to the test plate 36, or the test plate 36 may be attached to the main body 30 a of the adherend member 30. You may make it affix the test piece 2 to the test board 36 before fixing. Note that one end of the test piece 2 is a portion to be gripped by the gripping member 50 without being attached to the test plate 36.

  Next, as shown in FIG. 5A, the test piece 2 adhered using the pressure roll 60 is applied to the test plate 36 with a predetermined pressing force, for example, a pressing force of 20 N defined in JIS Z 0237. Crimp. The pressure bonding of the test piece 2 is performed by rotating the adherend member 30 while pressing the pressure roll 60 against the adherend member 30 by the pressing mechanism 66. At this time, rotation of the adherend member 30 may be performed manually, or may be automatically performed by providing a dedicated drive mechanism for rotating the adherend member 30 or the pressure roll 60.

  The pressing force of the pressure-bonding roll 60 can be measured by the load measuring instrument 40 by connecting the bracket 32 of the adherend member 30 and the gripping member 50 with a connecting rod 68 as shown in FIG. it can. The control device 70 controls the pressing mechanism 66 so that the pressing force is constant based on the measurement result by the load measuring device 40.

  Next, the press roll 60 is opened, the adherend member 30 is rotated to bring the test piece 2 closer to the gripping member 50, and one end of the test piece 2 that is not attached is gripped by the gripping member 50. Then, as shown in FIG. 5B, the adherend member 30 is moved away from the gripping member 50 by the moving mechanism 20. At this time, the control device 70 controls the moving mechanism 20 so as to move the adherend member 30 at a speed set in advance based on the test conditions. The moving speed of the adherend member 30 may be constant during the test or may be changed.

  As the adherend member 30 moves, the test piece 2 gradually peels from the test plate 36. Therefore, the load measuring device 40 measures the force required for peeling the test piece 2 from the test plate 36. The measurement result of the load measuring device 40 is stored in the control device 70 as time-series data, and is output to a display panel or the like if necessary. One peel test is completed by the above procedure.

  Next, the peeling angle in the peeling test by the peeling test apparatus 1 will be described. 4A to 4C are diagrams showing the peel angle in the peel test.

  Here, as shown in FIG. 5A, the portion of the test piece 2 attached to the test plate 36 is attached to the attaching portion 2a, and the portion not attached to the test plate 36 is attached to the tensile portion 2b. When the separation portion 2c is between the portion 2a and the tension portion 2b, the tangent line T (tangential line in the direction orthogonal to the support shaft 34) at the separation portion 2c of the adherend surface 38 and the tension portion 2b is defined as the separation angle. Become.

  When the test piece 2 is peeled from the test plate 36, the sticking portion 2a is shortened and the tensile portion 2b is lengthened, so that the position of the peeling portion 2c moves on the test plate 36, and the peel angle θ changes. It will be. For this reason, in this embodiment, when the test piece 2 peels from the test plate 36 by arrange | positioning the to-be-adhered member 30 rotatably as mentioned above, the to-be-adhered member 30 is naturally by balance of force. And the peeling portion 2c is always positioned on a straight line S connecting the gripping center A and the rotation center B. Thereby, in the peeling test apparatus 1, the peeling angle θ during the peeling test can be kept substantially constant without providing a complicated mechanism or the like.

  Therefore, as shown in FIG. 6A, when the adherend surface 38 is formed in an arc shape centered on the rotation center B of the adherend member 30, the peel angle θ during the peel test is 90. Can be kept almost constant. That is, it is possible to perform a 90-degree peel test with high accuracy. Also, as shown in FIGS. 2B and 2C, the peel angle θ during the peel test is substantially constant at an arbitrary angle other than 90 degrees by configuring the adherend surface 38 from an appropriate curved surface. It becomes possible to keep it.

上式において、ａ、ｂは定数であり、ａ＞０、ｂ≧０である。なお、ｂ＝０の場合、対数螺旋曲線は円（円弧）となる。対数螺旋曲線上の各点における接線の傾きは、次の式で表される。

また、対数螺旋曲線上の各点と原点（０，０）を結ぶ直線の傾きは、次の式で表される。

従って、原点（０，０）を支軸３４の中心（回転中心）Ｂと設定した場合の剥離角度θは、次の式から求められる。

すなわち、剥離角度θは曲線上のいずれの点においても一定となっている。また、ｂの値を変更することによって、０度〜１８０度の範囲で任意の剥離角度θを設定することができる。 For example, by configuring the adherend surface 38 so that the cross section in the direction of the support shaft 34 is a logarithmic spiral curve (conformal spiral curve), the peel angle θ during the peel test is approximately at an arbitrary angle other than 90 degrees. Can be kept constant. This logarithmic spiral curve is expressed by the following equation using (x, y) coordinates with t as a parameter.

In the above formula, a and b are constants, and a> 0 and b ≧ 0. When b = 0, the logarithmic spiral curve is a circle (arc). The slope of the tangent line at each point on the logarithmic spiral curve is expressed by the following equation.

The slope of the straight line connecting each point on the logarithmic spiral curve and the origin (0, 0) is expressed by the following equation.

Therefore, the peeling angle θ when the origin (0, 0) is set as the center (rotation center) B of the support shaft 34 can be obtained from the following equation.

That is, the peeling angle θ is constant at any point on the curve. Further, by changing the value of b, an arbitrary peeling angle θ can be set in the range of 0 to 180 degrees.

  FIGS. 5A to 5C are diagrams showing examples of logarithmic spiral curves. FIG. 4A is a logarithmic spiral curve when a = 1 and b = 0.5, and the peel angle θ is 63.43 degrees. FIG. 4B is a logarithmic spiral curve when a = 1 and b = 1, and the peel angle θ is 45 degrees. FIG. 4C is a logarithmic spiral curve when a = 1 and b = 1.5, and the peel angle θ is 33.69 degrees.

従って、剥離試験中の剥離速度を一定に保った状態で剥離試験を行う場合には、上記数式に基づいて、制御装置７０が被貼着部材３０の移動速度を適宜に制御するようにすればよい。なお、剥離角度θを９０度で一定に保つようにした場合（被貼着面３８を円弧状に構成した場合）には、被貼着部材３０の移動距離Ｌ_ｍと試験片の剥離長さＬ_ｐは等しくなる。 Further, in this way, when the adherend surface 38 is configured so that the peel angle θ during the peel test is kept substantially constant at an arbitrary angle other than 90 degrees, the center of rotation is accompanied by the rotation of the adherend member 30. Since the distance from B to the peeling part 2c changes, the peeling length of the test piece 2 from the adherend member 30 with respect to the movement distance of the adherend member 30 by the moving mechanism 20 changes. In this case, the relationship between the peel length L _p of the test piece and the moving distance L _m of the sticking member 30 is expressed by the following equation.

Therefore, when the peeling test is performed in a state where the peeling speed during the peeling test is kept constant, the control device 70 appropriately controls the moving speed of the adherend member 30 based on the above formula. Good. Note that when the peel angle θ to keep constant at 90 degrees (if the target bonding surface 38 is configured in an arc shape), peel length of the travel distance L _m and the test piece of the sticking member 30 L _p is equal.

6A and 6B are diagrams showing a case where a peel test is performed with the attachment direction of the adherend member 30 reversed. In this case, the peeling angle in the same figure (b) which reversed the attachment direction of the to-be-adhered member 30 with respect to peeling angle (theta) in the figure (a) is set to (theta) _i = 180 degrees-(theta). Thus, when the adherend surface 38 is configured so that the peel angle θ during the peel test is kept substantially constant at an arbitrary angle other than 90 degrees, the attachment direction of the adherend member 30 is reversed, that is, By reversing the sticking direction of the test piece 2 with respect to the sticking member 30, it is possible to perform peel tests at two kinds of peel angles.

  In addition, you may make it comprise the to-be-adhered member 30 in polygonal column shape. FIGS. 7A to 7C are diagrams showing examples in which the adherend member 30 is configured in a triangular prism shape, and FIGS. 8A to 8C are configurations in which the adherend member 30 is formed in a quadrangular prism shape. It is the figure which showed the example.

  In these examples, the main body 30a of the adherend member 30 is formed in a polygonal column shape, and the test plate 36 is fixed to each outer peripheral surface of the main body 30a. And each test board 36 is comprised by the flat form, respectively, and the to-be-adhered surface 38 is a plane.

そして、この場合、剥離長さＬ_ｐはγの関数となり、回転中心Ｂから正三角形の各頂点までの距離をｄとすると次の式によって表される。

さらに、この場合、被貼着部材３０の回転に伴って回転中心Ｂから剥離部２ｃまでの距離が変化するため、移動機構２０による被貼着部材３０の移動距離Ｌ_ｍはγの関数となり、次の式によって表される。

図８（ａ）〜（ｃ）では、被貼着部材３０の断面形状を正方形状とした例を示している。従って、剥離試験開始時の剥離角度θは、同図（ａ）に示されるように、４５度となる。そして、この状態から試験片２が剥離していくにつれて、同図（ｂ）および（ｃ）に示されるように、剥離角度θが漸次増大していく。具体的には、被貼着部材３０の断面形状を正方形状とした場合の剥離角度θは、被貼着部材３０の回転角度をγとすると、次の式によって表される。

そして、この場合、剥離長さＬ_ｐは、回転中心Ｂから正方形の各頂点までの距離をｄとすると次の式によって表される。

さらに、この場合、移動機構２０による被貼着部材３０の移動距離Ｌ_ｍは、次の式によって表される。

このように、被貼着部材３０を多角柱状に構成した場合、剥離試験中に剥離角度θを漸次変化させることが可能となるため、様々な剥離角度θにおける試験片２の剥離に要する力の測定を、１回の剥離試験において行うことができる。また、ロータリーエンコーダまたはポテンショメータ等を設置して被貼着部材３０の回転角度γを測定し、この回転角度γの測定結果および上記各数式に基づいて、制御装置７０が被貼着部材３０の移動速度を適宜に制御することにより、例えば、剥離角度θの変化率を一定に保った剥離試験や、試験片２の試験板からの剥離速度を一定に保った剥離試験等を行うことができる。 7A to 7C show examples in which the cross-sectional shape of the adherend member 30 is an equilateral triangle. Accordingly, the peel angle θ at the start of the peel test is 30 degrees as shown in FIG. As the test piece 2 is peeled away from the gripping member 50 by separating the adherend member 30 from this state, the peel angle θ gradually increases as shown in FIGS. It has come to go. Specifically, the peeling angle θ when the cross-sectional shape of the adherend member 30 is an equilateral triangle is represented by the following expression, where the rotation angle of the adherend member 30 is γ.

In this case, the peel length L _p is a function of γ, and is expressed by the following equation, where d is the distance from the rotation center B to each vertex of the regular triangle.

Furthermore, in this case, to change the distance from the rotation center B with the rotation of the sticking member 30 to the peeling section 2c, moving distance L _m of the sticking member 30 by the moving mechanism 20 is a function of gamma, It is expressed by the following formula.

8A to 8C show an example in which the cross-sectional shape of the adherend member 30 is a square shape. Accordingly, the peel angle θ at the start of the peel test is 45 degrees as shown in FIG. As the test piece 2 peels from this state, the peel angle θ gradually increases as shown in FIGS. Specifically, the peel angle θ when the cross-sectional shape of the adherend member 30 is a square shape is expressed by the following equation, where the rotation angle of the adherend member 30 is γ.

In this case, the peel length L _p is expressed by the following equation, where d is the distance from the rotation center B to each vertex of the square.

Furthermore, in this case, moving distance L _m of the sticking member 30 by the moving mechanism 20 is expressed by the following equation.

In this way, when the adherend member 30 is configured in a polygonal column shape, the peel angle θ can be gradually changed during the peel test, so that the force required to peel the test piece 2 at various peel angles θ is reduced. Measurements can be made in a single peel test. Further, a rotary encoder or a potentiometer is installed to measure the rotation angle γ of the adherend member 30, and the control device 70 moves the adherend member 30 based on the measurement result of the rotation angle γ and each of the above formulas. By appropriately controlling the speed, for example, a peel test in which the rate of change of the peel angle θ is kept constant, a peel test in which the peel speed of the test piece 2 from the test plate is kept constant, and the like can be performed.

  FIGS. 9A to 9C and FIGS. 10A and 10B are diagrams showing examples of other members to be bonded 30. FIG. For example, as shown in FIG. 9A, the adherend member 30 may be configured so that one flat test plate 36 can be fixed instead of configuring the main body 30 a in a polygonal column shape. Good. Further, as shown in FIG. 9B, the main body 30a may have a columnar shape or a cylindrical shape with a part cut away, and the test plate 36 may be fixed to the cutout portion.

そして、図９（ｃ）に示されるように、回転中心Ｂから剥離試験開始時の剥離部２ｃまでの距離をｄとすると、剥離長さＬ_ｐは次の式によって表される。

また、移動機構２０による被貼着部材３０の移動距離Ｌ_ｍは、次の式によって表される。

なお、これらの式においてθｓの値を３０度または４５度とすると、上述の三角柱状または四角柱状の被貼着部材３０の場合と同一の式となる。すなわち、これらの式は、被貼着面３８を平面状に構成した場合の剥離角度θ、剥離長さＬ_ｐおよび移動距離Ｌ_ｍの式を一般化したものとなっている。 Even when the adherend member 30 is configured in this manner, the peeling angle θ gradually increases with the rotation of the adherend member 30 as in the above-described polygonal column-like adherend member 30. Specifically, as shown in FIG. 9C, when the initial peel angle at the start of the peel test is θs and the rotation angle of the adherend member 30 is γ, the peel angle θ is expressed by the following equation. The

As shown in FIG. 9C, when the distance from the rotation center B to the peeling portion 2c at the start of the peeling test is d, the peeling length _Lp is expressed by the following equation.

The moving distance L _m of the sticking member 30 by the moving mechanism 20 is expressed by the following equation.

In addition, when the value of θs is 30 degrees or 45 degrees in these formulas, the formula is the same as that in the case of the above-described triangular prism-shaped or quadrangular prism-shaped member 30. That is, these expressions are generalized expressions of the peeling angle θ, the peeling length L _p, and the moving distance L _m when the adherend surface 38 is formed in a flat shape.

  Furthermore, as shown in FIG. 10A or FIG. 10B, the adherend member 30 has a peel angle θ with the shape of the adherend surface 38 of the test plate 36 accompanying the rotation of the adherend member 30. You may comprise from the curved surface set so that a change may become arbitrary change rates.

  Thus, in the peeling test apparatus 1 according to the present embodiment, the shape of the adherend surface 38 of the test plate 36 is appropriately set, and the movement of the adherend member 30 is appropriately controlled by the control device 70. It is possible to perform various peel tests that are not conventional.

  FIG. 11 is a cross-sectional view showing an example in which the peel test apparatus 1 is equipped with a camera for observing the behavior of the peel portion 2 c of the test piece 2. In this example, as shown in the figure, the camera 80 opposed to the peeling portion 2c inside the adherend member 30 is fixed to the support shaft 34, and the test plate 36 is made of transparent glass, resin, or the like. is doing.

  By doing in this way, it becomes possible to observe the behavior of the peeling part 2c when peeling the test piece 2 from the test plate 36 in detail through the test plate 36, and the analysis and research of the physical behavior in the peeling phenomenon can be performed. It can be carried out. In addition, the adhesiveness of the test piece 2 can be evaluated from more various viewpoints.

  Data captured by the camera 80 is stored in the control device 70 or predetermined storage means, and is output to predetermined display means if necessary. The control of the camera 80 may be performed by the control device 70, or another device may be provided.

  As described above, the peel test apparatus 1 according to this embodiment includes the adherend member 30 that is provided with the adherend surface 38 to which the test piece 2 is attached and is rotatably supported by the support shaft 34. The gripping member 50 that grips one end of the test piece 2 attached to the adherend member 30, the moving mechanism 20 that moves the adherend member 30 and the gripping member 50 relatively close to each other, and the movement mechanism 20 are controlled. And a load measuring device 40 that measures a load applied to the gripping member 50.

  Therefore, the peeling angle θ of the test piece 2 during the peeling test can be kept constant without providing a complicated structure and control device, and various peeling tests including a 90 degree peeling test are performed with high accuracy. be able to. In addition, it is possible not only to keep the peel angle θ during the peel test constant at an arbitrary angle, but also to change the peel angle θ and the peel speed during the peel test at any rate of change. The peel test can be performed in various ways that are not possible in the past.

  In addition, the gripping member 50 and the load measuring device 40 are fixed, and the moving mechanism 20 moves the adherend member 30 in a direction in which the sticking member 30 approaches and separates from the gripping member 50. By doing in this way, in a peeling test, the influence of the change of a load direction, noise, etc. resulting from moving a load measuring device can be excluded, and a peeling test can be performed with high precision.

  Further, the peeling test apparatus 1 rotates the center A of the portion gripped by the gripping member 50 of the test piece 2 and the center of rotation of the sticking member 30 when the sticking member 30 is rotated around the support shaft 34. The shape of the adherend surface 38 is set so that the angle at which the adherend surface 38 intersects the straight line S connecting B (the angle formed by the straight line S and the tangent line T) is always constant.

  For this reason, the peeling test about various peeling angles (theta) can be performed with high precision. As an angle formed by the straight line S and the tangent line T, either an acute angle or an obtuse angle can be adopted. Further, if the adherend surface 38 is formed of an arcuate curved surface with the support shaft 34 as the center, the angle formed by the straight line S and the tangent line T is 90 degrees, so that the 90 degree peel test can be performed with high accuracy. it can.

  Moreover, the control apparatus 70 changes the peeling speed of the test piece 2 for every peeling test by controlling the relative moving speed of the to-be-adhered member 30 and the holding member 50, or during one peeling test To change. For this reason, it becomes possible to perform a peeling test in a mode in which the peeling speed is variously changed, and it is possible to perform a multifaceted evaluation of the test piece 2 which has not been conventionally performed.

  Further, the peeling test apparatus 1 rotates the center A of the portion gripped by the gripping member 50 of the test piece 2 and the center of rotation of the sticking member 30 when the sticking member 30 is rotated around the support shaft 34. The adherend surface is such that the angle at which the adherend surface 38 intersects the straight line S connecting B (the angle formed by the straight line S and the tangent T) gradually changes as the adherend member 30 rotates. 38 shapes may be set.

  In this way, it becomes possible to gradually change the peeling angle θ at an arbitrary change rate during the peeling test, and the force required for peeling the test piece 2 at various peeling angles θ can be measured once. Can be done in the test. Further, if the adherend surface 38 is configured from a flat surface, the change in the peeling angle θ can be made proportional to the rotation angle γ of the adherend member 30.

  Moreover, the control apparatus 70 keeps the peeling speed of the test piece 2 constant during one peeling test by controlling the relative moving speed of the adherend member 30 and the gripping member 50. For this reason, even if it is a case where peeling angle (theta) is changed during a peeling test, it becomes possible to keep a peeling speed constant. As a result, when the force required for peeling the test piece 2 at various peeling angles θ is measured in a single peeling test, it is possible to eliminate the influence of the change in the peeling speed, so that the peeling is performed with high accuracy. A test can be performed.

  Moreover, the to-be-adhered member 30 is comprised so that the test plate 36 provided with the to-be-adhered surface 38 can be attached or detached. For this reason, by exchanging the test plate 36, it is possible to quickly and efficiently perform a peeling test on various combinations of the test piece 2 and the test plate 36.

  Further, in the peel test apparatus 1, the test plate 36 including the adherend surface 38 is made of a transparent material, and a portion where the test piece 2 peels from the adherend surface 38 can be observed through the adherend surface 38. The camera 80 may be further provided. By doing in this way, it becomes possible to analyze and study the physical behavior in the peeling phenomenon.

  Moreover, the peeling test apparatus 1 moves the pressure-bonding roll 60 for pressure-bonding the test piece 2 bonded to the bonded surface 38 to the bonded surface 38 and the pressure-bonding roll 60 to the bonded member 30. The controller 70 further includes a pressing mechanism 66 that presses, and the controller 70 controls the pressing mechanism 66 to adjust the pressing force of the pressure-bonding roll 60 on the adherend member 30. For this reason, the test piece 2 can be pressure-bonded to the adherend surface 38 efficiently and with high accuracy.

  Moreover, the load measuring device 40 measures the pressing force to the to-be-adhered member of the said crimping | compression-bonding roll. For this reason, it is not necessary to provide the load measuring device for pressure measurement, and the cost of the peeling test apparatus 1 can be reduced.

  In the present embodiment, the adherend member 30, the gripping member 40, and the load measuring device 50 are arranged in the horizontal direction and the adherend member 30 is moved in the horizontal direction. However, the present invention is limited to this. Instead of this, the adherend member 30, the gripping member 40, and the load measuring device 50 may be arranged in a vertical direction or an oblique direction, and the adherend member 30 may be moved in parallel thereto.

  Further, the moving mechanism 20 is not limited to one that moves only the adherend member 30 among the adherend member 30, the gripping member 50, and the weight measuring device 40, and the gripping member 50 and the weight measurement together with the adherend member 30. The device 40 may be moved, or only the gripping member 50 and the weight measuring device 40 may be moved.

  Moreover, you may make it arrange | position the crimping | compression-bonding roll 60 to the holding member 50 side. In this case, by connecting the gripping member 50 and the bracket 62 of the crimping roll 60 with the connecting rod 68, the pressing force of the crimping roll 60 can be measured as a tensile force by the load measuring device 40.

  Further, instead of including the pressing mechanism 66 for moving the pressure-bonding roll 60, the pressure-bonding roll 60 is fixed to the base 10, and the moving member 20 is used to press the adherend member 300 against the pressure-bonding roll 60. Also good.

  Moreover, in this embodiment, although the spindle 34 which supports the to-be-adhered member 30 is arrange | positioned in the horizontal direction, it is not limited to this, You may make it arrange | position the spindle 34 to an up-down direction. Good. FIG. 12 is a plan view showing an example in which the support shaft 34 is arranged in the vertical direction.

  In this example, as shown in the figure, the shapes of the bracket 32 of the adherend member 30 and the bracket 62 of the press roll 64 are changed, and the support shaft 34 of the adherend member 30 and the support of the press roll 64 are changed. The shaft 64 is arranged in the vertical direction. In addition, the orientation of the gripping member 50 is changed accordingly. Other configurations are the same as those described in FIG. In this way, when the adherend member 30 has a shape other than a cylindrical shape or a columnar shape, it is possible to eliminate the influence of the rotation of the adherend member 30 due to imbalance in weight on the peel test. It becomes.

  In the present embodiment, an example in which the test piece 2 is an adhesive tape has been described. However, the peel test apparatus 1 according to the present embodiment has two peel-off tests such as two members bonded and welded, paint, and plating. Needless to say, this is applicable.

  Furthermore, according to the peeling test apparatus 1 of the present embodiment, for example, the adhesive tape wound in a roll shape around a paper tube or the like is rotatably attached to the bracket 32, so that the unwinding force of the adhesive tape wound in a roll shape is achieved. It is also possible to perform measurements.

  Although the embodiments of the present invention have been described above, the peeling test apparatus of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Of course.

  The peel test apparatus of the present invention can be widely used in various peel test fields such as various members that are bonded, paint, plating, and the like.

DESCRIPTION OF SYMBOLS 1 Peeling test apparatus 2 Test piece 20 Moving mechanism 30 Adhering member 34 Supporting shaft of the adhering member 36 Test plate 38 Adhering surface 40 Weight measuring instrument 50 Grasping member 60 Pressing roll 66 Pressing mechanism 70 Control apparatus 80 Camera A Center of the part of the test piece gripped by the gripping member (grip center)
B Center of the axis of the adherend (center of rotation)
S A straight line connecting the center of gripping and the center of rotation T Tangential line at the peeling part of the adherend surface

Claims (6)

A to-be-attached member having a to-be-attached surface to which a test piece is attached and rotatably supported by a support shaft;
A gripping member for gripping one end of the test piece attached to the adherend member;
A moving mechanism for relatively approaching and separating the adherend member and the gripping member;
A control device for controlling the moving mechanism;
A load measuring device for measuring a load applied to the gripping member ,
The gripping member and the load measuring device are fixed,
The movement mechanism moves the adherend member in a direction in which it is moved closer to and away from the gripping member,
When the adherend member is rotated about the support shaft, the straight line connecting the center of the portion gripped by the gripping member of the test piece and the rotation center of the adherend member, The shape of the adherend surface is set so that the angle at which the adherend surfaces intersect is always constant,
The angle is an acute angle or an obtuse angle ,
Peel test device. The control device controls the relative moving speed of the adherend member and the gripping member to change the peeling speed of the test piece for each peeling test or change during one peeling test. Characterized by
The peel test apparatus according to claim 1 . The adherend member is configured such that the adherend surface is detachable,
The peel test apparatus according to claim 1 or 2 . The adherend surface is made of a transparent material, and further includes a camera arranged so that a portion where the test piece peels from the adherend surface can be observed through the adherend surface. ,
The peeling test apparatus according to any one of claims 1 to 3 . A crimping roll for crimping the test piece adhered to the adherend surface to the adherend surface;
A pressing mechanism that moves the pressure-bonding roll and presses the adherend member; and
The control device adjusts the pressing force of the pressure-bonding roll to the adherend member by controlling the pressing mechanism,
The peeling test apparatus according to any one of claims 1 to 4 . The load measuring device measures a pressing force of the pressure-bonding roll to the adherend member,
The peel test apparatus according to claim 5 .

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