Peeling test apparatus

Abstract

To provide a separation testing device that can easily change a separation angle with a simple configuration while ensuring test accuracy.SOLUTION: A separation testing device includes: an adherent 1 which forms an adherent surface 1x to which a test film T is stuck; a base 2 which supports the adherent 1; a test film retainer 3 which holds one end Ta of the test film T on the base 2; a linearly-moving body 5 which is arranged on the base 2 and moves the adherent 1 in a linear fashion with respect to the base 2; a rotating support body 6 which allows the adherent 1 to be rotated with respect to the linearly-moving body 5; a slide movement mechanism 7 which slides the adherent 1 in the face length direction D1 of the adherent surface 1x with respect to the linearly-moving body 5 and the rotating support body 6; and a load measuring instrument 4 which measures the load when the test film T is separated from the adherent surface 1x. The slide movement mechanism 7 includes a direction change member 15 and a bending-deformable transmission member 16 which is wound around the direction change member 15 and slides the adherent 1.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a peel test device used when peeling a test film from an adherent surface.

Background Art

[0002] Conventionally, a peel test has been conducted as a test for measuring the adhesive strength of an adhesive tape or adhesive sheet, or the peel adhesion strength of an adhesive or the like. As the peel test, for example, a 90-degree peel test and a 180-degree peel test are defined in JIS Z 0237.

[0003] Here, Patent Document 1 describes a device for performing a peel test at a peel angle of 90 degrees. In this device, the test accuracy is ensured by peeling the test specimen from the adhesive on the base while always maintaining the peel angle at 90 degrees by pulling up the test specimen and the base via a lifting table.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in actuality, there is a desire to conduct a test at a peel angle other than 90 degrees or 180 degrees, or further, to conduct a test in which the peel angle is changed a plurality of times during the test. However, it is difficult to arbitrarily change the peel angle in the device of Patent Document 1.

[0006] Therefore, the present invention provides a peel test device that can easily change the peel angle with a simple configuration while ensuring test accuracy.

Means for Solving the Problems

[0007] A peel test apparatus according to one aspect of the present invention is a peel test apparatus for peeling a test film from an adherend surface that extends in the direction of the surface length, by pulling one end of the test film that is separated from the adherend surface, the apparatus comprising: an adherend that forms the adherend surface; a base that supports the adherend; a test film holder disposed on the base and holding the one end of the test film; a linear moving body disposed on the base and moving the adherend linearly relative to the base in the vertical direction in which the adherend approaches and separates from the test film holder; and a rotating central axis interposed between the linear moving body and the adherend that allows the adherend to rotate relative to the linear moving body about a rotational central axis that intersects the direction of the surface length and the vertical direction and is the film width direction of the test film attached to the adherend surface. The device comprises a rotating support capable of rotation, a sliding movement mechanism for sliding the adherend in the surface length direction relative to the linear moving body and the rotating support, and a load measuring device for measuring the longitudinal load when the test film peels off from the adherend surface, wherein the sliding movement mechanism includes a direction changing member provided on the rotating support and centered on a direction changing axis extending in the height direction, and a transmission member which is a bendable linear member, belt, or chain that is wound around the direction changing member, with one end supported on the base side or the test film holder side and the other end supported on the adherend side, and transmits tension acting on it to the adherend as the linear moving body moves away from the test film holder, thereby sliding the adherend toward the side in which the test film peels off from the adherend surface.

[0008] Furthermore, in the above-mentioned peeling test apparatus, the distance between the direction change axis and the rotation center axis may be 5 mm or less.

[0009] Furthermore, in the above-described peeling test apparatus, the direction change axis and the rotation center axis may be arranged coaxially.

[0010] Furthermore, in the above peel test apparatus, the direction changing axis may always be located between one end and the other end in the surface length direction of the adherend that is slid by the sliding mechanism, when viewed from the height direction.

[0011] Furthermore, in the above-described peel test apparatus, when defining the sliding movement of the slide mechanism toward the side where the test film peels off in the direction of the surface length as a sliding movement toward the positive side, a biasing member may be further provided to bias the adherend toward the opposite side, which is opposite to the positive side.

[0012] Furthermore, in the above peel test apparatus, the biasing force of the biasing member may be greater than the gravitational force acting on the adherend when the vertical direction coincides with the vertical direction.

[0013] Furthermore, in the peel test apparatus described above, the base side is provided with a one-end support portion that supports one end of the transmission member, and the adherend side is provided with a other-end support portion that supports the other end of the transmission member, and the one-end support portion may be movable in the vertical direction relative to the base, and / or the other-end support portion may be movable in the plane length direction relative to the adherend.

[0014] Furthermore, in the above-described peel test apparatus, the peel position on the adhered surface where the test film peels off from the adhered surface may be located near the rotational center axis.

[0015] Furthermore, in the above-described peel test apparatus, the test film holder may be movable in the vertical direction relative to the base.

[0016] Furthermore, in the above-described peel test apparatus, the peel position on the adherend surface where the test film peels off from the adherend surface may be located at a position different from the rotational center axis.

[0017] Furthermore, in the peeling test apparatus described above, when the direction changing member is a pulley, the nominal diameter of the pulley is used as the diameter of the changing member, and when the direction changing member is a timing pulley or a gear, the pitch circle diameter is used as the diameter of the changing member, in which case the diameter of the changing member may be 30 mm or less.

[0018] Furthermore, in the above-described peeling test apparatus, the transmission member may be a metal wire.

[0019] Furthermore, in the above peeling test apparatus, the transmission member may be a timing belt, and the direction changing member may be a timing pulley.

[0020] The peeling test apparatus may further include a peeling phenomenon measuring sensor provided on the rotating support or the linear moving body, which measures a physical quantity generated at the peeling position on the adherend surface when the test film peels off from the adherend surface.

[0021] Another aspect of the present invention relates to a peel test apparatus in which a test film is attached to an adhesion surface extending in the direction of the surface length, and the test film is peeled off the adhesion surface by pulling one end of the test film that is separated from the adhesion surface, the apparatus comprising: an adhesion body forming the adhesion surface; a base supporting the adhesion body; a test film holder disposed on the base and holding the one end of the test film; a linear moving body disposed on the base and moving the adhesion body linearly relative to the base in the vertical direction in which the adhesion body approaches and separates from the test film holder; and the linear moving The device includes a rotating support interposed between the body and the adherend, which allows the adherend to rotate around a pivoting central axis that intersects the surface length direction and the vertical direction and extends in the height direction which is the film width direction of the test film attached to the adherend surface; a sliding movement mechanism that slides the adherend in the surface length direction relative to the surface length direction of; a peeling phenomenon measuring sensor provided on the rotating support or the surface, which measures a physical quantity that occurs at the peeling position on the adherend surface when the test film peels off from the adherend surface.

[0022] Also, in the above peeling test apparatus, the peeling phenomenon measurement sensor may be provided on the rectilinear moving body, and the peeling position on the adherent surface where the test film peels off from the adherent surface may be located near the rotation center axis.

Advantages of the Invention

[0023] According to the above peeling test apparatus, while ensuring the test accuracy, the peeling angle can be easily changed with a simple configuration.

Brief Description of the Drawings

[0024] [Figure 1] It is an overall top view of the peeling test apparatus according to an embodiment of the present invention. [Figure 2] It is an overall top view of the above peeling test apparatus, showing a state in which the peeling of the test film has progressed with respect to the state shown in FIG. 1. [Figure 3] It is an overall top view of the above peeling test apparatus, showing a state in which the peeling angle θ has been changed with respect to the state shown in FIG. 1. [Figure 4] It is an overall side view of the above peeling test apparatus, showing a view as seen from the arrow I in FIG. 1. [Figure 5] It is a schematic diagram showing the movement of the slide movement mechanism when the peeling angle of the above peeling test apparatus is changed. (a) shows the case where the peeling angle is the angle shown in FIG. 1, and (b) shows the case where the peeling angle θ is the angle shown in FIG. 3. [Figure 6] It is an overall top view of the peeling test apparatus according to Modification 1 of the above embodiment. [Figure 7] It is a schematic diagram showing the slide movement mechanism of the peeling test apparatus according to Modification 2 of the above embodiment.

Modes for Carrying Out the Invention

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (Overall Configuration) As shown in Figures 1 and 2, the peel test apparatus 100 is a device that, with the test film T attached to the adherend surface 1x, pulls one end Ta of the test film T that is separated from the adherend surface 1x to peel the test film T from the adherend surface 1x. The peel test apparatus 100 comprises an adherend 1 that forms the adherend surface 1x to which the test film T is attached, a base 2 that supports the adherend 1, a test film holder 3 that holds the test film T on the base 2, a load measuring device 4 that measures the load when the test film T peels off from the adherend 1, a linear moving body 5 and a rotating support 6 interposed between the adherend 1 and the base 2, a sliding movement mechanism 7 that slides the adherend 1 relative to the linear moving body 5 and the rotating support 6, and a peel phenomenon measuring sensor 8 provided on the rotating support 6. The test film T is, for example, an adhesive tape, and the side facing one side in the tape thickness direction is the adhesive surface B.

[0026] (adherent) The adherend 1 is rod-shaped or plate-shaped and forms a planar adherend surface 1x extending in its longitudinal direction. The adhesive surface B of the test film T can be adhered to the adherend surface 1x. Hereinafter, the longitudinal direction of the adherend 1 is defined as the surface length direction D1 of the adherend surface 1x. The test film T is attached to the adherend surface 1x along this surface length direction D1.

[0027] (Base) The base 2 is positioned on one side of the object to be attached 1 in the height direction D2, which intersects the surface length direction D1 and is aligned with the surface to be attached 1x. The base 2 supports the object to be attached 1 so that it can move and rotate via a linear moving body 5 and a rotating support 6, which will be described in detail later.

[0028] In this embodiment, the height direction D2 may be, for example, aligned vertically or horizontally, and the orientation of the peel test apparatus 100 is not particularly limited. However, in the following description, we will assume that the height direction D2 is aligned vertically, that is, that the base 2 is located at the lowest point of the peel test apparatus 100.

[0029] (Test film holder) The test film holder 3 is positioned on one side of the vertical direction D3, which intersects the plane length direction D1 and the height direction D2, that is, on the side facing the adhesion surface 1x of the adherend 1 (the upper side when viewed from the plane of the paper in Figure 1). The test film holder 3 is also positioned on the base 2, on the other side (upper side) of the height direction D2 relative to the base 2, and is connected to the load measuring device 4, which will be described in detail later. The test film holder 3 has a planar holding surface 3a that faces one side of the plane length direction D1 (the right side when viewed from the plane of the paper in Figure 1). When the adhesive surface B of one end Ta of the test film T is attached to this holding surface 3a and then chucked into the test film holder 3, the test film holder 3 holds one end Ta of the test film T (the end that is not attached to the adherend 1).

[0030] Furthermore, the test film holder 3 is movable on both sides in the vertical direction D3 relative to the base 2, allowing it to adjust its position on the base 2.

[0031] The configuration of the test film holder 3 is not particularly limited, and it may hold one end Ta of the test film T by clamping it or by attaching it without using a chuck or clamp.

[0032] (Load measuring device) The load measuring device 4 is positioned on the base 2 on one side of the vertical direction D3 relative to the test film holder 3 (the upper side in the plane of Figure 1) and is supported by the base 2. The load measuring device 4 measures the load applied to the test film holder 3, that is, the load (tensile force) in the vertical direction D3 required to peel the test film T from the adherend 1. The load measuring device 4 in this embodiment has a load cell (not shown). The load measuring device 4 is electrically connected to a control device 200 provided in the base 2, and the output signal from the load measuring device 4 is transmitted to the control device 200, where the output from the load measuring device 4 is converted into a value of the load required for peeling. The control device 200 converts the output from the load measuring device 4 into the load required for peeling the test film T, taking into consideration the biasing force of the biasing member 20 (force when sliding the adherend 1), which will be described in detail later.

[0033] Although a detailed illustration of the control device 200 is omitted, the control device 200 includes, for example, a CPU and storage means such as ROM, RAM, and a hard disk. The configuration of the load measuring device 4 is not particularly limited, and the load may be measured by methods such as strain gauge type, piezoelectric type, capacitive type, electromagnetic type, or tuning fork type.

[0034] The control device 200 may also automatically adjust the position of the test film holder 3 and the position of the one-end support portion 18 that supports the transmission member 16, which will be described in more detail later.

[0035] (Straight-line moving object) The linear moving body 5 is positioned on the other side (upper side) of the base 2 in the height direction D2, and moves the object to be attached 1 linearly relative to the base 2 in the vertical direction D3. More specifically, a guide member 10 extending in the vertical direction D3 is provided on the base 2, and the linear moving body 5 engages with the guide member 10. This allows the linear moving body 5 to move closer to and further away from the test film holder 3 in the vertical direction D3. The linear moving body 5 is moved by a drive mechanism (motor, actuator, etc.) not shown, provided on the base 2. In this case, the drive mechanism is controlled by a control device 200, so that the linear moving body 5 can move at any speed and stop at any position.

[0036] As shown in Figure 3, the rotating support 6 is interposed between the linearly moving body 5 and the object to be attached 1, and supports the object to be attached 1 so that it can rotate around a rotational central axis O1 that extends in the device height direction D2 relative to the linearly moving body 5 (and base 2). In this embodiment, the rotational central axis O1 is positioned on the attachment surface 1x of the object to be attached 1 when viewed from the device height direction D2.

[0037] The rotating support 6 can be fixed in a rotated position at any angle by means of, for example, a stopper (not shown). In this embodiment, by rotating the rotating support 6, the peel angle θ of the test film T relative to the adherend 1 can be set to any angle within the range of 0° < θ ≤ 180°. The "peeling angle θ" here refers to the angle between a portion of the test film T attached to the adherend surface 1x and the remaining portion of the test film T that is separated from the adherend surface 1x and held by the test film holder 3.

[0038] Here, the peeling position P on the adherend 1x where the test film T peels off from the adherend 1x is located near the rotational axis O1 (in a plan view from the direction of the rotational axis O1, within 10 mm of the rotational axis O1), preferably on the rotational axis O1. The operation of the rotating support 6 may be controlled by the control device 200, and the rotating support 6 may be operated automatically to achieve, for example, a peeling angle θ set (input) by the user.

[0039] (Sliding mechanism) The sliding mechanism 7 slides the object to be attached 1 in the direction of the surface length D1 relative to the linearly moving body 5. More specifically, the sliding mechanism 7 includes a direction changing member 15 provided on the rotating support 6, a transmission member 16 wound around the direction changing member 15, and a slider 17 provided on the rotating support 6 to hold the object to be attached 1 in the manner described above.

[0040] In this embodiment, the direction changing member 15 is a pulley (flat pulley) and is positioned around a direction changing axis O2 that extends in the height direction D2. In this embodiment, the direction changing axis O2 is positioned coaxially with the rotation center axis O1, that is, it is positioned on the attachment surface 1x of the attachment body 1 when viewed from the height direction D2. Furthermore, when the direction changing member 15 is viewed from the height direction D2, the direction changing axis O2 is always located between one end 1a and the other end 1b of the attachment body 1 in the surface length direction D1, that is, the direction changing member 15 is provided in a position such that the direction changing axis O2 does not normally protrude from the attachment body 1 in the surface length direction D1.

[0041] Here, as shown in Figures 4 and 5, the pulley diameter d, which is the nominal diameter of the direction changing member 15 (the diameter of the surface that the transmission member 16 contacts: the changing member diameter), should preferably be 30 mm or less.

[0042] The transmission member 16 is a linear member that is bendable. In this embodiment, the transmission member 16 is a single metal wire, and one end 16a of the transmission member 16 is supported on the base 2. More specifically, one end 16a of the transmission member 16 is supported by an end-side support portion 18 provided on the base 2. This end-side support portion 18 is movable on both sides in the vertical direction D3 relative to the base 2, meaning that one end 16a of the transmission member 16 is movable in the vertical direction D3, and the tension of the transmission member 16 can be adjusted.

[0043] Furthermore, the other end 16b of the transmission member 16 is supported on the side of the object to be adhered 1. More specifically, the other end 16b of the transmission member 16 is supported by a support portion 11 on the other end provided on the object to be adhered 1. The support portion 11 on the object to be adhered 1 is located closer to one end 1a in the plane length direction D1, that is, closer to the other end Tb of the test film T attached to the adhered surface 1x.

[0044] Although detailed illustrations are omitted, the slider 17 has, for example, a rail extending in the direction of the surface length D1, and the object to be attached 1 engages with this rail, causing the object to slide relative to the rotating support 6.

[0045] With the configuration of the sliding mechanism 7 described above, the tension acting on the transmission member 16 as the adherend 1 moves away from the test film holder 3 by the linear moving body 5 is transmitted to the adherend 1, causing the adherend 1 to be pulled in the plane length direction D1, and the adherend 1 to slide toward the other side of the plane length direction D1 (the left side in the plane of Figure 1) where the test film T peels off from the adherend surface 1x. In other words, the adherend 1 slides toward the state shown in Figure 2. Hereinafter, the sliding movement of the test film T by the sliding mechanism 7 toward the side from which it peels off will be defined as the sliding movement toward the positive side.

[0046] During the sliding motion, the peeling position P of the test film T remains fixed in the longitudinal direction D1 relative to the base 2, and moves only in the longitudinal direction D3 relative to the base 2. When the adherend 1 slides, the test film T is always maintained in an extended state in the longitudinal direction D3 in the region between the test film holder 3 and the direction changing member 15.

[0047] Incidentally, as shown in Figures 5(a) and 5(b), the transmission member 16 has a holding-side region 160, which is the region between one end 16a (see Figure 3) and the position where it contacts the direction changing member 15 on the side of the one end 16a; a sliding-side region 161, which is the region between the other end 16b (see Figure 3) and the position where it contacts the direction changing member 15 on the side of the other end 16b; and a conversion member opposing region 162, which is the region between the holding-side region 160 and the sliding-side region 161 that is wrapped around the direction changing member 15. When the adherend 1 is rotated by the rotating support 6 to reduce the peeling angle θ from θ1 degrees to θ2 degrees, which is less than θ1 degrees, the length of the conversion member opposing region 162 increases by L1. This change amount L1 is L1 = πd × (θ1 - θ2) / 360. For this reason, the one-end support portion 18 can adjust at least L1 to the other side in the vertical direction D3 (downward in the plane of the paper in Figure 1). Conversely, when the separation angle θ is increased by the rotating support 6, the length of the conversion member opposing region 162 of the transmission member 16 decreases, so the position of the one-end support portion 18 is adjusted to one side in the vertical direction D3 (upwards in the plane of the paper in Figure 1).

[0048] (Biasing member) Returning to Figures 1 and 2, a biasing member 20 is provided between the rotating support 6 and the adherend 1 to bias the adherend 1 against the sliding movement of the adherend 1 toward the side where the test film T peels off (the positive side). That is, the biasing member 20 biases the adherend 1 toward the opposite side from the positive side. In this embodiment, the biasing member 20 is, for example, a coil spring extending in the plane length direction D1, with one end 20a of the biasing member 20 supported by a one-end biasing support portion 12 provided on the adherend 1 at a position closer to the other end 1b, and the other end 20b of the biasing member 20 supported in the plane length direction D1 by a other-end biasing support portion 6x provided on the rotating support 6 at a position between one end 1a and the other end 1b of the adherend 1 in the plane length direction D1. In this embodiment, the biasing member 20 is a "tension spring" that generates a biasing force when stretched, but it is not limited to this, and may be a "compression spring" that generates a biasing force when pressed against it, for example. If the biasing member 20 is a compression spring, one end 20a of the biasing member 20 will be supported by the attached object 1 on the side closer to one end 1a of the attached object 1 relative to the biasing support portion 6x on the other end of the rotating support body 6.

[0049] Furthermore, if the vertical direction D3 is aligned with the vertical direction, that is, if the linearly moving body 5 is moved in the vertical direction, the biasing force of the biasing member 20 becomes greater than the gravitational force acting on the object to be attached 1.

[0050] (Sensor for measuring peeling phenomenon) The delamination phenomenon measurement sensor 8 is a sensor that non-contactively measures the physical quantities generated at the delamination position P on the adherend surface 1x when the test film T is delaminated from the adherend surface 1x. Specifically, the delamination phenomenon measurement sensor 8 is, for example, an electrostatic sensor that measures the static electricity generated during delamination, an optical sensor (image sensor, etc.) that measures the light emission during delamination, or a temperature sensor that measures the heat generated during delamination. The delamination phenomenon measurement sensor 8 is fixed to a rotating support 6 and positioned opposite the delamination position P. The distance (straight-line distance) dp from the delamination phenomenon measurement sensor 8 to the delamination position P is kept constant regardless of the position of the adherend 1.

[0051] (Effects and Benefits) According to the peel test apparatus 100 described above, by configuring the slide movement mechanism 7 with a linear member, which is a transmission member 16, and a pulley, which is a direction changing member 15, the test film T can be peeled off from the adherend surface 1x by sliding the adherend 1 toward the positive side with a very simple configuration. Furthermore, by employing such a slide movement mechanism 7, the peel angle θ when peeling the test film T with the rotating support 6 can be arbitrarily and easily changed, and it is possible to slide the adherend 1 toward the positive side while keeping the set peel angle θ constant, thereby ensuring test accuracy.

[0052] Furthermore, since the rotational axis O1 of the rotating support 6 and the direction changing axis O2 of the direction changing member 15 are arranged coaxially, the displacement of the transmission member 16 when the peeling angle θ of the test film T is changed can be minimized, and the amount of adjustment required for the tension of the transmission member 16 when the peeling angle θ is changed can be minimized, making it possible to easily perform peeling tests while changing the peeling angle θ.

[0053] Furthermore, since the direction changing axis O2 of the direction changing member 15 is always located between one end 1a and the other end 1b of the adherend 1 in the surface length direction D1, the amount of movement (movement width) of the adherend 1 when the adherend 1 is slid to the positive side can be reduced compared to the case where the direction changing axis O2 is located on the other side of the surface length direction D1 (to the left side in the plane of the paper in Figure 1) of the adherend 1. This allows the size of the surface length direction D1 in the entire peel test apparatus 100 to be kept small, leading to space saving for the peel test apparatus 100.

[0054] Since a biasing member 20 is provided between the rotating support 6 and the adherend 1 to bias the adherend 1, when the adherend 1 slides toward the positive side, the sliding mechanism 7 can apply a uniform tensile force to the adherend 1, allowing for a stable peel test.

[0055] Furthermore, in this embodiment, the biasing force of the biasing member 20 is greater than the gravitational force acting on the adherend 1, assuming that the vertical direction D3 coincides with the vertical direction. Therefore, it is possible to prevent the adherend 1 from sliding due to free fall caused by gravity. Thus, it is also possible to use the peeling test apparatus 100 of this embodiment in a vertical tensile testing machine.

[0056] Furthermore, since the one-end support portion 18 that supports one end 16a of the linear transmission member 16 is movable in the vertical direction D3 relative to the base 2, when the rotating support 6 is rotated to change the peeling angle θ, the misalignment (bending or excessive tension) of the transmission member 16 can be easily adjusted.

[0057] Furthermore, since the peeling position P on the adherend 1x where the test film T peels off from the adherend 1x is located near the rotational axis O1, preferably on the rotational axis O1, the displacement of the test film T (bending or excessive tension) when the peeling angle θ is changed while the test film T is attached to the adherend 1x can be kept to a minimum.

[0058] Furthermore, in this embodiment, since the test film holder 3 is movable in the vertical direction D3 relative to the base 2, even if a positional shift (deflection or excessive tension) occurs in the test film T when the peeling angle θ is changed, the positional shift of the test film T can be easily adjusted.

[0059] Furthermore, if the pulley diameter d of the direction changing member 15 is 30 mm or less, the displacement (deflection or excessive tension) of the transmission member 16 when the peeling angle θ is changed can be minimized, the peeling angle θ can be easily changed, and peeling tests can be easily performed at various peeling angles θ.

[0060] Furthermore, since the transmission member 16 in the sliding mechanism 7 is a metal wire, the sliding mechanism 7 can be made with a simple configuration while ensuring sufficient durability even when the object to be attached 1 is repeatedly slid through it.

[0061] Furthermore, by mounting the peeling phenomenon measurement sensor 8 on the rotating support 6, the distance dp from the peeling phenomenon measurement sensor 8 to the peeling position P is always kept constant, thereby improving the measurement accuracy when measuring physical quantities such as static electricity generated during peeling. In particular, by being able to accurately measure the static electricity generated during peeling, it becomes possible to avoid problems such as peeling charge when, for example, the test film T is used as an adhesive tape to attach to an electronic device.

[0062] Herein, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0063] For example, as shown in Figure 6, the peeling position P at which the test film T peels off from the adherend surface 1x may be located at a different position (a distant position) from the rotational axis O1. In this case, if the peeling angle θ is reduced from θ1 to θ2, the test film T will shorten by L2 and become deflected. However, by configuring the test film holder 3 to be movable by L2 in at least the vertical direction D3, the deflection of the test film T can be easily corrected. Similarly, if the peeling angle θ is increased, the test film T will become too taut, but the position of the test film T can be adjusted by moving the test film holder 3.

[0064] Furthermore, the rotational axis O1 of the rotating support 6 and the direction-changing axis O2 of the direction-changing member 15 do not necessarily have to be arranged coaxially, but it is preferable that the distance between the rotational axis O1 and the direction-changing axis O2 be 5 mm or less. In this case, the displacement (bending or over-tensioning) of the transmission member 16 when the peeling angle θ is changed can be minimized, and the position of the one-end support portion 18 that supports one end 16a of the transmission member 16 can be easily adjusted.

[0065] Alternatively, instead of adjusting the position of the one-end support portion 18 that supports one end 16a of the transmission member 16, or in conjunction with adjusting the position of the one-end support portion 18, the position of the other-end support portion 11 that supports the other end 16b of the transmission member 16 may be adjusted in the plane length direction D1.

[0066] The transmission member 16 may be made of a metal wire, or a linear material such as a fiber thread or resin thread (fishing line). The direction changing member 15 may be made of a flat pulley, or other types of pulleys such as a V-pulley.

[0067] Furthermore, as shown in Figure 7, the transmission member 16A may be a timing belt, and the direction changing member 15A may be a timing pulley. In this case, it becomes possible to control the position of the object to be attached 1 with high precision. Similarly, the transmission member 16A may be a chain, and the direction changing member 15A may be a gear. And, similar to the direction changing member 15 which is a pulley, it is preferable that the pitch circle diameter (conversion member diameter) of the direction changing member 15A which is a timing pulley or a gear is 30 mm or less.

[0068] The delamination phenomenon measurement sensor 8 may also be provided on the linearly moving body 5. In this case, in order to keep the distance dp between the delamination phenomenon measurement sensor 8 and the delamination position P completely constant regardless of the position of the adherend 1, it is preferable that the delamination position P be located near the rotational center axis O1, preferably on the rotational center axis O1. Furthermore, the delamination phenomenon measurement sensor 8 can also be applied to delamination test apparatus having a sliding mechanism with a configuration other than that described above. In addition, the load at which the test film T delaminates from the adherend surface 1x may be calculated from the physical quantity measured by the delamination phenomenon measurement sensor 8 without using the load measuring instrument 4. [Industrial applicability]

[0069] According to the peeling test apparatus of the present invention, the peeling angle can be easily changed with a simple configuration while ensuring test accuracy. [Explanation of symbols]

[0070] 1…Adherend 1x...Surface to be adhered to 2…Base 3…Test film holder 3a…Holding surface 4…Load measuring device 5…Straight-moving object 6…Rotating support 7...Sliding mechanism 8... Delamination phenomenon measurement sensor 11...Other end side support part 15, 15A... Directional changing member 16, 16A...Transmission members 18...One end support part 20… Biasing member 100... Peeling test device 200... Control device D1...Direction of surface length D2...Height direction D3...Vertical direction O1... Rotational axis O2... Direction change axis P…Peeling position T...Test film

Claims

1. A peel test apparatus for peeling a test film from an adherend surface that extends in the direction of its surface length, wherein the test film is attached to the adherend surface along the direction of its surface length, and one end of the test film that is separated from the adherend surface is pulled to peel the test film from the adherend surface, The adherend that forms the adherend surface, A base for supporting the object to be attached, A test film holder is positioned on the base and holds one end of the test film, A linear moving body is positioned on the base and moves the adherend linearly relative to the base in a vertical direction such that the adherend approaches and separates from the test film holder, A rotating support is interposed between the linearly moving body and the adherend, allowing the adherend to rotate relative to the linearly moving body about a pivot center axis that intersects the surface length direction and the vertical direction and extends in the height direction which is the film width direction of the test film attached to the adherend surface, A sliding mechanism that slides the object to be attached in the direction of the surface length relative to the linear moving body and the rotating support, A load measuring device for measuring the longitudinal load when the test film peels off from the adhered surface, Equipped with, The aforementioned sliding mechanism is A direction changing member is provided on the aforementioned rotating support, and is centered on the direction changing axis extending in the height direction, A transmission member which is a bendable linear member, belt, or chain that is wound around the direction changing member and has one end supported on the base side or the test film holder side and the other end supported on the adherend side, and transmits tension acting on it to the adherend as the linear moving member moves away from the test film holder, thereby sliding the adherend toward the side in which the test film peels away from the adherend surface, A peeling test apparatus having a peeling test device.

2. The peeling test apparatus according to claim 1, wherein the distance between the direction change axis and the rotation center axis is 5 mm or less.

3. The peeling test apparatus according to claim 2, wherein the direction change axis and the rotation center axis are arranged coaxially.

4. The peeling test apparatus according to any one of claims 1 to 3, wherein the direction changing axis is always located between one end and the other end in the surface length direction of the adherend that is slid by the sliding mechanism, as viewed from the height direction.

5. When the sliding movement by the sliding mechanism toward the side on which the test film peels off in the plane length direction is defined as a sliding movement toward the positive side, the peeling test apparatus according to any one of claims 1 to 3 further comprises a biasing member that biases the adherend toward the opposite side, which is opposite to the positive side.

6. The peel test apparatus according to claim 5, wherein the biasing force in the biasing member is greater than the gravitational force acting on the adherend when the vertical direction coincides with the vertical direction.

7. The base side is provided with a one-end support portion that supports one end of the transmission member, and the attached object side is provided with a other-end support portion that supports the other end of the transmission member. The peel test apparatus according to any one of claims 1 to 3, wherein the one-end support portion is movable in the vertical direction relative to the base, and / or the other-end support portion is movable in the plane length direction relative to the object to be adhered.

8. The peeling test apparatus according to any one of claims 1 to 3, wherein the peeling position on the adhered surface where the test film peels off from the adhered surface is located near the rotational center axis.

9. The peel test apparatus according to any one of claims 1 to 3, wherein the test film holder is movable in the vertical direction relative to the base.

10. The peeling test apparatus according to claim 9, wherein the peeling position on the adhered surface where the test film peels off from the adhered surface is located at a position different from the rotational center axis.

11. When the direction changing member is a pulley, the nominal diameter of the pulley is defined as the diameter of the changing member; when the direction changing member is a timing pulley or a gear, the pitch circle diameter is defined as the diameter of the changing member. The peeling test apparatus according to any one of claims 1 to 3, wherein the diameter of the conversion member is 30 mm or less.

12. The peeling test apparatus according to any one of claims 1 to 3, wherein the transmission member is a metal wire.

13. The transmission member is a timing belt. The peeling test apparatus according to any one of claims 1 to 3, wherein the direction changing member is a timing pulley.

14. The peeling test apparatus according to claim 1, further comprising a peeling phenomenon measuring sensor provided on the rotating support or the linear moving body, which measures a physical quantity generated at the peeling position on the adherend surface when the test film peels off from the adherend surface.

15. A peel test apparatus for peeling a test film from an adherend surface that extends in the direction of its surface length, wherein the test film is attached to the adherend surface along the direction of its surface length, and one end of the test film that is separated from the adherend surface is pulled to peel the test film from the adherend surface, The adherend that forms the adherend surface, A base for supporting the object to be attached, A test film holder is positioned on the base and holds one end of the test film, A linear moving body is positioned on the base and moves the adherend linearly relative to the base in a vertical direction such that the adherend approaches and separates from the test film holder, A rotating support is interposed between the linearly moving body and the adherend, allowing the adherend to rotate relative to the linearly moving body about a pivot center axis that intersects the surface length direction and the vertical direction and extends in the height direction which is the film width direction of the test film attached to the adherend surface, A sliding mechanism that slides the object to be attached in the direction of the surface length relative to the linear moving body and the rotating support, A peeling phenomenon measuring sensor provided on the rotating support or the linear moving body, which measures a physical quantity generated at the peeling position on the adherend surface when the test film peels off from the adherend surface, A peel test apparatus equipped with the following features.

16. The peeling phenomenon measuring sensor is provided on the linearly moving body. The peeling test apparatus according to claim 14 or 15, wherein the peeling position on the adhered surface where the test film peels off from the adhered surface is located near the rotational center axis.

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