JP2022098555A - Shear strength measurement device and shear strength measurement system - Google Patents

Abstract

To provide a technology for efficient measurement of accurate shear strength.SOLUTION: A shear strength measurement device includes a movable part, a sample holder, an elastic body, and a detection part. The movable part is configured to be movable in the longitudinal direction along a first axis and has a pressing part having a pressing surface facing the front side and a pressurizing part receiving a force in a second direction. The sample holder has a holding part for projecting and holding a sample on a track through which the pressing surface passes when the movable part moves along the first axis, a pressure reception part receiving a force in a first direction, and a fixing mechanism for fixing the sample to the holding part by the force received by the pressure reception part. The elastic body is elastically deformed by receiving a compressive force between the pressurizing part and the pressure reception part. In the shear strength measurement device, the elastic body is elastically deformed in the course of moving the movable part forward, and then the sample is shear-broken by the pressing surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a technique for measuring shear strength.

The adhesive strength of the adhesive can be evaluated by, for example, the shear strength. As a general method for obtaining the shear strength of an adhesive, for example, a tensile test using a simple laminated adhesive joint sample obtained by adhering two base materials with an adhesive to be evaluated is known. (See, for example, Non-Patent Documents 1 and 2).

Da Silver, Lucas FM, et al. "Effective of affect type and tickness on the lap shear strength." The journal of adhesion 82.11 (2006): 1091-1115. Naito, Kimiyoshi, Mutsumi Onta, and Yasuo Kogo. "The effect of adhesives on tensile and shear strength of polyimide." International Journal of Addhesion and Ads

However, in the above-mentioned tensile test, it is difficult to obtain accurate shear strength of the adhesive because the influences such as bending deformation and misalignment of the base material constituting the sample are likely to be applied. Further, in the above-mentioned tensile test, it is difficult to efficiently evaluate the adhesive because it takes time and effort to prepare and set the sample.

In view of the above circumstances, an object of the present invention is to provide a technique capable of efficiently measuring an accurate shear strength.

In order to achieve the above object, the shear strength measuring device according to one embodiment of the present invention includes a movable part, a sample holder, an elastic body, and a detection part.
The movable portion is configured to be movable in the first direction and the second direction along the first axis, and receives a pressing portion having a pressing surface facing the first direction side and a force in the second direction. It has a pressurizing action part and.
The sample holder has a holding portion that projects and holds the sample on a trajectory through which the pressing surface passes when the movable portion moves along the first axis, and a pressure receiving portion that receives a force in the first direction. It has an acting portion and a fixing mechanism for fixing the sample to the holding portion by a force applied to the pressure receiving acting portion.
The elastic body is elastically deformed by receiving a compressive force between the pressure acting portion and the pressure receiving acting portion.
In the process of moving the movable portion in the first direction, the shear strength measuring device elastically deforms the elastic body and then shear-breaks the sample by the pressing surface.

In this shear strength measuring device, the sample can be sheared and broken while the sample is fixed to the holding portion of the sample holder by only a single operation of moving the movable portion in the first direction. Therefore, in this shear strength measuring device, accurate shear strength can be efficiently measured by a simple device configuration.

The sample may have a first base material, a second base material, and an adhesive portion for adhering the first base material and the second base material. In this case, both the first base material and the second base material may have a columnar shape centered on an axis along the second axis orthogonal to the first axis. Further, the pressing surface may have a groove shape that extends along the second axis and is recessed in the second direction. Further, the pressing surface may be a curved surface having a radius of curvature larger than that of the outer peripheral surface of the second base material. In addition, the shear strength measuring device may further include a support portion that supports the pressing portion so as to be rotatable about an axis along the second axis on the second direction side of the pressing surface. good.
With these configurations, the shear strength of the adhesive constituting the adhesive portion of the sample can be satisfactorily evaluated.

The shear strength measuring device may further include an elevating mechanism for projecting a portion of the sample sheared by the pressing surface remaining in the holding portion onto the orbit.
In this configuration, the portion remaining in the holding portion of the sample holder in the sample after shearing can be removed by an operation similar to the operation of shearing and breaking the sample by projecting the portion remaining in the holding portion of the sample holder by an elevating mechanism. This makes it possible to continuously and efficiently measure the shear strength of a plurality of samples.

The shear strength measuring system according to one embodiment of the present invention includes the shear strength measuring device, a supply unit, a transport unit, and a control unit.
The supply unit supplies the sample.
The transport unit transports the sample from the supply unit to the holding unit.
The control unit controls the movable unit and the transport unit.

It is possible to provide a technique capable of efficiently measuring accurate shear strength.

It is a schematic block diagram of the shear strength measuring apparatus which concerns on one Embodiment of this invention. It is a top view of the sample holder of the said shear strength measuring apparatus. It is a vertical sectional view of the said sample holder. It is a figure which shows the sample corresponding to the said shear strength measuring apparatus. It is a top view which shows the state which the sample is inserted in the said sample holder. It is a vertical sectional view which shows the state which the sample is inserted into the said sample holder. It is a top view which shows the pressing part and the support part of the said shear strength measuring apparatus. It is a schematic block diagram which shows the operation of the said shear strength measuring apparatus. It is a top view which shows the state which the sample is fixed to the said sample holder. It is a vertical sectional view which shows the state which the sample is fixed to the said sample holder. It is a figure which shows the operation of the said shear strength measuring apparatus. It is a figure which shows the elevating mechanism of the said shear strength measuring apparatus. It is a vertical sectional view which shows the said elevating mechanism. It is a schematic block diagram which shows the operation of the said shear strength measuring apparatus. It is a schematic block diagram which shows the other form of the said shear strength measuring apparatus. It is a schematic block diagram of the shear strength measurement system which concerns on one Embodiment of this invention. It is a top view which shows the operation of the transport part of the said shear strength measurement system. It is a perspective view which shows the manufacturing process of the sample of the said shear strength measuring apparatus. It is a top view which shows the manufacturing process of the sample of the said shear strength measuring apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each drawing appropriately shows X-axis, Y-axis, and Z-axis which are orthogonal to each other and define a spatial coordinate system. The X-axis and Y-axis extend horizontally, and the Z-axis extends vertically. Further, in each drawing, front X1 and rear X2 are also shown as appropriate directions along the X axis.

[Shear strength measuring device 1]
FIG. 1 is a schematic configuration diagram of a shear strength measuring device 1 according to an embodiment of the present invention. The shear strength measuring device 1 includes a sample holder 10 capable of holding a sample S to be measured for shear strength, a movable portion 20 located behind the sample holder 10 X2, and a frame for holding the sample holder 10 and the movable portion 20. It has a part F and.

FIG. 2 is a plan view of the sample holder 10 viewed from above in the Z-axis direction, and FIG. 3 is a vertical cross-sectional view of the sample holder 10 along the XX plane. The sample holder 10 has a stage surface 11 which is an upward plane extending along an XY plane, and a holding portion 12 which is recessed downward in the central portion of the stage surface 11.

FIG. 4 is a diagram showing a sample S to be measured for shear strength in the present embodiment. The sample S is a columnar shape centered on an axis along the Z axis, and has a lower first base material S1, an upper second base material S2, a first base material S1 and a second base material S2. It is composed of an adhesive portion Sa for adhering the above. The adhesive portion Sa is formed by the adhesive to be evaluated.

Since the shear strength measuring device 1 can handle a small sample S having a diameter of, for example, about 8 mm, it is possible to evaluate the shear strength with a small amount of adhesive. In the sample S, for example, the thickness of the first base material S1 and the thickness of the second base material S2 can be set to 3 mm, and the thickness of the bonded portion Sa can be set to 0.2 mm.

The first base material S1 and the second base material S2 in the sample S are formed of a highly rigid material that is not easily deformed. The material constituting the first base material S1 and the second base material S2 is appropriately selected from a resin material, a metal material, a ceramic material, and the like, depending on the material to be bonded using the adhesive constituting the adhesive portion Sa. It is possible.

FIGS. 5 and 6 show a state in which the sample S is inserted into the holding portion 12 of the sample holder 10. As shown in FIG. 6, in the sample S inserted in the holding portion 12, the first base material S1 is located in the holding portion 12, the second base material S2 projects upward from the stage surface 11, and the adhesive portion Sa. Overlaps the stage surface 11 in the horizontal direction.

In the state shown in FIGS. 5 and 6, a gap is formed around the first base material S1 of the sample S, and the sample S is not fixed to the holding portion 12. The sample holder 10 has a fixing mechanism for fixing the sample S to the holding portion 12. In the sample holder 10 according to the present embodiment, the fixing mechanism is configured to include the slit portion 13.

The slit portion 13 is provided at a position overlapping the central portion of the holding portion 12 in the X-axis direction in the Y-axis direction. The slit portion 13 is provided with a plurality of slits L that penetrate the sample holder 10 along the Z axis and extend along the Y axis. Each slit L does not penetrate the sample holder 10 in the Y-axis direction, that is, does not divide the sample holder 10 in the X-axis direction.

The sample holder 10 has a pressure receiving action unit 14. The pressure receiving action unit 14 is located on the back surface of the sample holder 10 facing the rear X2. Further, as shown in FIG. 1, the sample holder 10 is supported by the frame portion F from the front X1 side, and movement to the front X1 is restricted. Therefore, in the sample holder 10, the force applied to the pressure receiving action unit 14 acts as a compressive force along the X axis.

When a compressive force along the X axis is applied to the sample holder 10, the gaps constituting each slit L are narrowed, so that the slit portion 13 is elastically deformed along the X axis. Along with this, the dimension of the holding portion 12 in the X-axis direction is reduced, so that the first base material S1 of the sample S is sandwiched by the holding portion 12 from the front X1 and the rear X2 and fixed in the X-axis direction.

As described above, the sample holder 10 is configured so that the first base material S1 of the sample S is fixed to the holding portion 12 by the force applied to the pressure receiving acting portion 14. In the sample S in which the first base material S1 is fixed in the X-axis direction, the pressing force applied to the second base material S2 in the X-axis direction acts as a shearing force on the bonded portion Sa.

The movable portion 20 shown in FIG. 1 is configured to be movable along the X axis with respect to the sample holder 10 on the frame portion F. The shear strength measuring device 1 has a horizontal actuator 30 which is a first driving unit for moving the movable portion 20. The horizontal actuator 30 has a shaft portion 31 that can be expanded and contracted along the X axis, and is configured to be able to transmit a driving force such as a motor from the rear X2 to the movable portion 20 via the shaft portion 31.

The movable portion 20 has a main main body portion 21 and a sub main body portion 22. The main main body portion 21 is configured to be movable along the X axis on the frame portion F, and holds other configurations of the movable portion 20. The main main body portion 21 has a flat plate-shaped loading portion 21a extending along an XY plane and a wall portion 21b extending upward from the rear portion of the loading portion 21a.

The front end portion of the shaft portion 31 of the horizontal actuator 30 is connected to the back surface of the wall portion 21b of the main body portion 21. As a result, in the shear strength measuring device 1, the movable portion 20 can be moved to the front X1 and the rear X2 by the expansion and contraction of the shaft portion 31 along the X axis by the horizontal actuator 30.

The sub-main body portion 22 is loaded on the loading portion 21a of the main main body portion 21. The shear strength measuring device 1 has a detection unit 40 located between the wall portion 21b of the main main body portion 21 and the sub main body portion 22. The detection unit 40 is configured as a load cell that detects a load applied between the wall portion 21b of the main main body portion 21 and the sub main body portion 22.

The movable portion 20 is configured such that the sub-main body portion 22 is not constrained in the X-axis direction on the loading portion 21a by a configuration other than the detection portion 40. Therefore, in the shear strength measuring device 1, the load applied to the rear X2 with respect to the sub-main body portion 22 can be detected by the detecting unit 40 as it is.

Further, the movable portion 20 has a pressing portion 23 and a supporting portion 24. The pressing portion 23 is supported by a support portion 24 provided on the front surface of the sub main body portion 22, and extends from the support portion 24 to the front X1. That is, the rear end portion of the pressing portion 23 is held on the front surface of the sub main body portion 22 via the support portion 24.

FIG. 7 is a plan view of the pressing portion 23 and the supporting portion 24 of the movable portion 20 as viewed from above. The pressing portion 23 has a flat plate shape extending along the XY plane. The movable portion 20 is configured such that the pressing portion 23 passes through a position on the sample holder 10 close to the stage surface 11 when moving along the X axis.

A pressing surface 23a facing the front X1 is provided at the front end of the pressing portion 23. The pressing surface 23a has a groove shape that extends along the Z axis and is recessed toward the rear X2. The pressing surface 23a is a curved surface having a radius of curvature larger than that of the outer peripheral surface of the sample S. The pressing surface 23a can be formed, for example, so that the horizontal cross section has a semicircular shape.

The support portion 24 has a shaft portion 24a extending along the Z axis, and the pressing portion 23 is rotatably supported by the shaft portion 24a. With such a configuration, in the movable portion 20, the displacement of the pressing surface 23a in the Y-axis direction due to the rotation of the pressing portion 23 is allowed, that is, the position of the pressing surface 23a can be provided with play in the Y-axis direction. ..

The movable portion 20 is configured such that the pressing surface 23a of the pressing portion 23 passes over the holding portion 12 of the sample holder 10 when moving along the X axis. That is, the second base material S2 protruding from the stage surface 11 in the sample S held by the holding portion 12 of the sample holder 10 is located on the orbit through which the pressing surface 23a passes.

Further, the movable portion 20 has a pressurizing action portion 25. The pressurizing action section 25 is located in front of the loading section 21a of the main body section 21 and faces the pressure receiving action section 14 of the sample holder 10 in the X-axis direction. The distance of the pressure acting portion 25 to the pressure receiving acting portion 14 of the sample holder 10 changes due to the movement of the movable portion 20 along the X axis.

The shear strength measuring device 1 has an elastic body 50 located between the pressure acting portion 25 of the movable portion 20 and the pressure receiving acting portion 14 of the sample holder 10. The elastic body 50 is composed of a coil spring, the rear end thereof is fixed to the pressure acting portion 25, and the elastic body 50 is elastically deformed along the X axis by receiving a compressive force between the pressure acting portion 25 and the pressure receiving acting portion 14. do.

The shear strength measuring device 1 moves the movable portion 20 to the front X2 from the state shown in FIG. 1, so that the sample S held by the holding portion 12 of the sample holder 10 is sheared and broken by the pressing surface 23a of the pressing portion 23. do. FIG. 8 shows a state in which the pressing surface 23a of the pressing portion 23 does not reach the holding portion 12 of the sample holder 10 in the process.

In the state shown in FIG. 8, the front end portion of the elastic body 50 is in contact with the pressure receiving action portion 14 of the sample holder 10, and the elastic body 50 receives a compressive force by the pressure receiving acting portion 14 and the pressurizing acting portion 25 to be elastic. It is deformed. As a result, a force acting on the front X1 is exerted on the pressure receiving action portion 14 of the sample holder 10 by the elastic force of the elastic body 50.

Therefore, in the sample holder 10, as shown in FIGS. 9 and 10, the slit portion 13 is elastically deformed along the X axis, so that the first base material S1 of the sample S is fixed in the X axis direction by the holding portion 12. To. That is, in the shear strength measuring device 1, the sample S is fixed to the holding portion 12 of the sample holder 10 at a stage before the sample S is sheared and broken.

Then, as shown in FIG. 11, by further moving the movable portion 20 to the front X2, the sample S fixed to the holding portion 12 is sheared and broken by the pressing surface 23a of the pressing portion 23. At this time, in the sample S, since the first base material S1 is fixed, a shearing force in the X-axis direction is accurately applied to the bonded portion Sa by the force applied to the second base material S2 toward the front X1. The second base material S2 of the sample S that has been shear-broken is discharged to the front X1 as it is.

In the shear strength measuring apparatus 1, the detection unit 40 detects a load applied from the sample S to the pressing surface 23a of the pressing unit 23 when the sample S is sheared and broken. Therefore, the shear strength measuring device 1 can obtain an accurate shear strength of the adhesive portion Sa of the sample S by the load detected by the detection unit 40.

As described above, in the shear strength measuring device 1, the operation of fixing the sample S and the operation of shearing and breaking the sample S are continuously performed in this order only by a single operation of moving the movable portion 20 to the front X1. Can be done. As a result, the shear strength measuring device 1 can efficiently measure the shear strength of the sample S.

Further, in the shear strength measuring device 1, a driving force for performing two operations, an operation of fixing the sample S and an operation of shearing and breaking the sample S, can be generated only by a single horizontal actuator 30. .. As a result, the shear strength measuring device 1 can measure the shear strength of the sample S with a simple device configuration.

Further, in the shear strength measuring device 1, as described above, since the pressing surface 23a that shear-breaks the sample S has play in the Y-axis direction, the pressing surface 23a is displaced even with respect to the sample S having an error in position or shape. By doing so, the pressing force on the front X1 is accurately applied without one-sided contact. As a result, in the shear strength measuring device 1, the measurement error of the shear strength is less likely to occur.

Then, by moving the movable portion 20 to the rear X2 from the state shown in FIG. 11, the movable portion 20 is returned to the position shown in FIG. At this time, the first base material S1 of the sample S remains in the holding portion 12 of the sample holder 10. The shear strength measuring device 1 has a vertical actuator 60 which is a second driving unit for removing the first base material S1 of the sample S from the holding unit 12.

In the shear strength measuring device 1, as shown in FIG. 12, a vertical actuator 60 is provided in the lower region of the holding portion 12 in the sample holder 10. In the sample holder 10, a through hole 15 penetrating along the Z axis is provided, and the region where the vertical actuator 60 is provided and the holding portion 12 communicate with each other by the through hole 15.

The vertical actuator 60 has a pin portion 61 extending upward and inserted from below into the through hole 15 of the sample holder 10. The vertical actuator 60 is configured as an elevating mechanism capable of expanding and contracting the pin portion 61 up and down by using, for example, air pressure as a driving force. In the state shown in FIG. 12, the upper end portion of the pin portion 61 of the vertical actuator 60 does not enter the holding portion 12.

FIG. 13 shows a state in which the vertical actuator 60 extends the pin portion 61 upward. In this state, the first base material S1 of the sample S in the holding portion 12 is pushed up by the pin portion 61. As a result, the vertical actuator 60 can project the first base material S1 of the sample S onto the stage surface 11.

As shown in FIG. 14, the movable portion 20 is moved to the front X1 in a state where the first base material S1 of the sample S is projected onto the stage surface 11, so that the first base material S1 is formed by the pressing surface 23a of the pressing portion 23. The material S1 is discharged to the front X1. Then, by returning the movable portion 20 and the pin portion 61 of the vertical actuator 60 to their original positions, the state shown in FIG. 1 is restored.

As described above, in the shear strength measuring device 1, the operation for one sample S is completed by repeating the operation of moving the movable portion 20 to the front X1 twice, and the operation for the next sample S can be started. Therefore, the shear strength measuring device 1 can continuously and efficiently measure the shear strength of a plurality of samples S.

The configuration of the shear strength measuring device 1 is not limited to the above. For example, the configuration of the sample holder 10 may be different from the above. As an example, the shape of the holding portion 12 can be appropriately changed depending on the shape of the sample S and the like. Further, the stage surface 11 may be a starting point of protrusion of the sample S, and may not be a flat surface as described above.

Further, the fixing mechanism of the sample holder 10 is not limited to the configuration using the slit portion 13 as long as the sample S can be fixed to the holding portion 12 by the force applied to the pressure receiving acting portion 14. Specifically, the fixing mechanism of the sample holder 10 can be configured such that, for example, the front portion and the rear portion provided separately in the front-rear direction are connected by an elastic member.

Further, the configuration of the movable portion 20 may be different from the above. As an example, the main main body 21 and the sub main body 22 of the movable portion 20 are not limited to the configuration shown in the drawings. In addition, the movable portion 20 is not limited to the configuration using the main main body portion 21 and the sub main body portion 22, and other known configurations may be used to realize the same functions as described above.

Further, the pressing portion 23 of the movable portion 20 is not limited to the above configuration as long as a shearing force is appropriately applied to the sample S. For example, the shape of the pressing surface 23a can be changed according to the shape of the sample S and the like. Further, the support portion 24 of the movable portion 20 may be limited to the above configuration as long as it can appropriately support the pressing portion 23.

Further, the structure of the elastic body 50 may be different from the above. As an example, the elastic body 50 may be fixed to the pressure receiving action portion 14 of the sample holder 10 as shown in FIG. In addition, the elastic body 50 may be held by another member between the pressure receiving action portion 14 of the sample holder 10 and the pressurizing action portion 25 of the movable portion 20.

Further, the shear strength measuring device 1 may be provided with a plurality of elastic bodies 50. In this case, depending on the number of elastic bodies 50, the sample holder 10 may be provided with a plurality of pressure receiving action portions 14, and the movable portion 20 may be provided with a plurality of pressure acting portions 25. In addition, as the elastic body 50, an elastic body other than the coil spring may be used, and for example, a leaf spring or the like can be used.

Further, the sample S that can be measured by the shear strength measuring device 1 is not limited to the above. As an example, the shape of the sample S can be changed to another shape such as a prismatic shape, if necessary. In this case, the configuration of the holding portion 12 of the sample holder 10 and the pressing portion 23 of the movable portion 20 can be changed according to the shape of the sample S.

Further, the shear strength measuring device 1 can be used not only for evaluating the shear strength of the adhesive but also for evaluating the shear strength of various materials. In this case, the sample S integrally formed by the material to be evaluated can be used. In this case as well, the shear strength of the sample S can be measured in the same manner as described above.

Further, the shear strength measuring device 1 may have a configuration other than the above, if necessary. For example, the shear strength measuring device 1 may have a temperature adjusting mechanism capable of raising the temperature of the sample S to, for example, about 200 ° C. Further, the temperature adjusting mechanism may have a function of lowering the temperature of the sample S.

[Shear strength measurement system 100]
FIG. 16 is a schematic configuration diagram of a shear strength measuring system 100 using the shear strength measuring apparatus 1 according to the above embodiment. The shear strength measuring system 100 includes a supply unit 110, a transport unit 120, a control unit 130, and a data processing unit 140, in addition to the shear strength measuring device 1 according to the above embodiment.

The supply unit 110 supplies a plurality of samples S to be measured. The transport unit 120 transports the sample S supplied by the supply unit 110 to the holding unit 12 of the sample holder 10 of the shear strength measuring device 1. FIG. 17 is a plan view showing an example of the supply unit 110 and the transport unit 120 of the shear strength measurement system 100.

The supply unit 110 has a supply tray 111 in which a plurality of storage units 111a for accommodating the plurality of samples S one by one are arranged. The transport unit 120 is configured as a robot arm and has a stretchable arm 121 provided with a suction unit 121a at the tip end portion and a shaft portion 122 that rotatably supports the rear end portion of the arm 121.

The transport unit 120 sucks the samples S in the storage portion 111a of the supply tray 111 one by one to the suction portion 121a of the arm 121, and transports them to the holding portion 12 of the sample holder 10. As a result, the shear strength measuring system 100 can continuously and automatically insert a plurality of samples S into the holding portion 12 of the sample holder 10.

The control unit 130 includes a transport unit controller 131 and a movable unit controller 132. The transport unit controller 131 has a function of controlling the transport operation of the sample S by the transport unit 120. The movable portion controller 132 has a function of controlling the moving motion of the movable portion 20 along the X axis by the horizontal actuator 30.

Further, the control unit 130 may have another configuration such as an elevating controller for controlling the operation of the vertical actuator 60. The control unit 130 may be composed of, for example, at least one computer, or may be composed of a plurality of computers arranged at different positions.

The data processing unit 140 has, for example, a function of acquiring a load detection signal from the detection unit 40 and calculating the shear strength from the acquired load detection signal. The data processing unit 140 can be configured by, for example, at least one computer, and may be configured by using a computer common to the control unit 130.

The shear strength measuring system 100 does not have to include the data processing unit 140, and in this case, the function of the data processing unit 140 may be realized by an external device. Further, the shear strength measuring system 100 may be modified from the above configuration as needed, and may further include a configuration other than the above.

[Manufacturing method of sample S]
A method of manufacturing the sample S having the configuration shown in FIG. 4 that can be used for evaluating the shear strength of the adhesive by the shear strength measuring device 1 according to the above embodiment will be described. In the method for producing the sample S according to the present embodiment, as shown in FIG. 18, a first sheet S1L corresponding to the first base material S1 and a second sheet S2L corresponding to the second base material S2 are used.

More specifically, as shown in FIG. 18, by applying an adhesive to be evaluated on the first sheet S1L or the second sheet S2L, an adhesive layer SaL corresponding to the adhesive portion Sa is formed, and the first sheet S1L is formed. And the second sheet S2L are adhered to each other via the adhesive layer SaL. As a result, a sample sheet SL having a laminated structure similar to that of the sample S can be obtained.

Then, as shown in FIG. 19, by punching the sample sheet SL with a circular punch, a large number of small samples S can be obtained from one large-sized sample sheet SL. As described above, in the present embodiment, since the adhesive portion Sa can be collectively formed for a plurality of sample S for each type of adhesive to be evaluated, the sample S can be rapidly manufactured at low cost. be.

1 ... Shear strength measuring device 10 ... Sample holder 11 ... Stage surface 12 ... Holding part 13 ... Slit part 14 ... Pressure receiving action part 20 ... Movable part 21 ... Main main body part 22 ... Sub main body part 23 ... Pressing part 23a ... Pressing surface 24 ... Support unit 25 ... Pressurizing unit 30 ... Horizontal actuator 40 ... Detection unit 50 ... Elastic body 60 ... Vertical actuator 100 ... Shear strength measurement system 110 ... Supply unit 120 ... Transport unit 130 ... Control unit S ... Sample S1 ... First Base material S2 ... Second base material Sa ... Adhesive part

Claims (8)

A pressing portion that is configured to be movable in the first direction and the second direction along the first axis and has a pressing surface facing the first direction side, and a pressurizing portion that receives a force in the second direction. With a moving part,
A holding portion that projects and holds the sample on the trajectory through which the pressing surface passes when the movable portion moves along the first axis, a pressure receiving portion that receives a force in the first direction, and the above. A sample holder having a fixing mechanism for fixing the sample to the holding portion by a force applied to the pressure receiving portion.
An elastic body that elastically deforms when a compressive force is applied between the pressure acting portion and the pressure receiving acting portion.
A detection unit that detects the load applied to the pressing surface in the second direction, and
Equipped with
A shear strength measuring device that elastically deforms the elastic body in the process of moving the movable portion in the first direction, and then shear-breaks the sample by the pressing surface. The shear strength measuring device according to claim 1.
The sample has a first base material, a second base material, and an adhesive portion for adhering the first base material and the second base material.
The holding portion is a shear strength measuring device that holds the first base material by projecting the second base material onto the orbit. The shear strength measuring device according to claim 2.
A shear strength measuring device in which both the first base material and the second base material have a columnar shape centered on an axis along a second axis orthogonal to the first axis. The shear strength measuring device according to claim 3.
A shear strength measuring device in which the pressing surface extends along the second axis and is recessed in the second direction. The shear strength measuring apparatus according to claim 4.
The pressing surface is a curved surface having a radius of curvature larger than that of the outer peripheral surface of the second base material. The shear strength measuring apparatus according to claim 5.
A shear strength measuring device further provided with a support portion for supporting the pressing portion so as to be rotatable about an axis along the second axis on the second direction side of the pressing surface. The shear strength measuring apparatus according to any one of claims 1 to 6.
A shear strength measuring device further comprising an elevating mechanism for projecting a portion of the sample sheared by the pressing surface remaining in the holding portion onto the track. The shear strength measuring device according to any one of claims 1 to 7.
The supply unit that supplies the sample and
A transport unit that transports the sample from the supply unit to the holding unit,
A control unit that controls the movable unit and the transport unit,
A shear strength measuring system equipped with.

Images