JP3093490B2 - Adhesion measuring machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for measuring the bonding strength when paper or cardboard is bonded.

[0002]

2. Description of the Related Art A conventional adhesive force measuring apparatus comprises a fixing table for clamping a first sample piece, one of two sample pieces to be bonded, and a second sample piece, clamping the other sample piece, toward the fixing table. It has a moving table that moves forward and backward, an adhesive application section provided between them, and a pressing section for applying a pressing force to the bonding section. Then, the movable table on which the second sample piece is clamped moves toward the fixed table, and when it comes halfway, the adhesive is applied to the surface of the second sample piece by a brush at the adhesive application section. Subsequently, the movable table moves, and the second sample enters below the first sample, and when the portion on which the adhesive is applied and the first sample come to a position where they overlap with each other, the pressure is applied from the pressing portion. The tightening block comes down and presses the overlapped portion onto the moving table. The pressing block continues to be pressed with a predetermined force for a predetermined time, then retreats upward, and the bonding is completed.

[0003] From the state where the bonding is completed in this manner, the movable table returns to the original position and pulls the bonding portion.
Measure the tensile force until the bonded part peels off.

[0004]

However, in the above-mentioned adhesive force measuring machine, the movable table mounts the second sample piece on the fixed table, clamps the movable sample from above, and attaches the adhesive to the surface to be clamped. Since the thickness of the second sample piece changes, the height of the bonding surface changes. Therefore, every time the thickness of the second sample piece changes, the measuring machine must be stopped and the position of the paste brush must be adjusted, and the efficiency of the measuring operation has not been improved. Further, when the bonding surface changes, the bonding pressure by the pressing block also changes, causing a measurement error.

[0005] The present invention has been made to solve the above-mentioned problem, and it is possible to keep the adhesive surface constant irrespective of the thickness of the specimen, and to apply the paste brush even when the thickness of the specimen changes. It is an object of the present invention to provide an adhesive force measuring device that does not require adjustment of the adhesive force.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a fixed table for clamping a first sample piece and a movable table for clamping a second sample piece and moving back and forth in the direction of the fixed table. And an adhesive application section provided with a paste brush for applying an adhesive to the surface of the second sample piece, which is located between the fixed table and the movable table and moves toward the fixed table, and clamps with the movable table. An adhesive force measuring device, which is provided in the vicinity of where the second sample piece and the first sample piece to be clamped by the fixing table are superimposed, and has a pressing part that presses the superposed part of the first and second sample pieces; A moving table, a lifting table on which the second sample piece is placed, and a second table on the lifting table;
It has a fixed stopper for holding the sample piece, and a drive means for moving the elevating platform toward and away from the fixed stopper, wherein the surface where the second sample piece abuts the fixed stopper is the coated surface of the adhesive. I have.

[0007]

First, one end of the first sample piece is clamped by the fixing table, and the other end is projected. Next, the second sample piece is placed on the lift table, and the lift table is raised toward the fixed stopper.
The second sample piece is clamped between the fixed stopper. When the movable table on which the second sample piece is clamped is moved toward the fixed table in this way, the movable table reaches the adhesive application section on the way, where the adhesive is applied. The adhesive is applied to the surface of the second sample piece, and this surface is the same as the contact surface with the fixed stopper, and is always at a fixed position regardless of the thickness of the second sample piece. Therefore, even if the thickness of the second sample piece changes, the adhesive can be applied without any adjustment. The second sample piece to which the adhesive has been applied in this way further moves toward the fixed table, and eventually overlaps the first sample piece held by the fixed table on the movable table. Then, the pressed portion presses the overlapped portion with a predetermined force for a predetermined time, and the bonding is completed.
Since the bonding surface is unchanged, the bonding pressure can be kept constant.

Thereafter, the movable table moves away from the fixed table with the first sample piece clamped on the fixed table and the second sample piece clamped on the movable table. Then, the adhesive force is determined by measuring the tensile force until the adhesive portion breaks.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the entire adhesive strength measuring apparatus of the present invention, with a cover removed so that a main part can be easily seen. In the figure, an operation section B is provided at a lower portion of the front surface of a frame A, where various push buttons B1, an emergency stop button B2, a breaker B3 and the like necessary for operation of a measuring machine are collectively arranged. C is a fixed table for clamping the first test piece α. D is a moving table, which clamps the second test piece β, and slides on the bed E by a driving device (not shown) provided in the bed E or the frame A to move toward and away from the fixed table C. F denotes an adhesive application unit, which is notified by a moving table position detecting means D 'provided on the moving table D that the second sample piece on the moving table D toward the fixed table C has reached a predetermined position. Activate and apply the adhesive to the second specimen. H denotes a pressing portion, which presses the overlapping portion from above when the second sample piece, which is clamped to the moving table D and coated with the adhesive, comes below the first sample piece to be clamped by the fixing table C. It is to adhere. G is a light transmitter, and G 'is a light receiver, which is a safety device for stopping the machine to prevent an accident if light is blocked by a worker's hand or the like during measurement.

Next, a more detailed configuration of the fixed base C will be described with reference to FIG. The base block 1 is fixed to a frame A, and a load cell block 2 is slidably mounted by a dovetail groove.
The multi-stage driving means 4 is mounted on the protruding portion of the base back plate 3. The multi-stage driving means 4 is a two-stage cylinder having a similar rod below this, although only the rod 4a is visible in the figure. Rod 4
a comes into contact with the lower surface of the projecting beam 2a of the load cell block 2, and the load cell block 2 can be raised or lowered in two stages by a two-stage structure.

On the load cell block 2, a cantilever type load cell 5 as a first load measuring device is erected.
The fixed base plate 6 is fixed to the upper end serving as the free end. Slide rods 7 are erected at four corners of the fixed base plate 6, and each slide rod 7 is
At the four corners of the air cylinder 9. The tip of the rod of the air cylinder 9 is connected to the clamp plate 8 although not shown in the drawing.

The operation of the fixing table will be described. When one end of the first test piece is inserted between the fixed base plate 6 and the clamp plate 8, the air cylinder 9 is operated to push the clamp plate 8 downward in the drawing to clamp the first test piece.

The fixed base plate 6 is connected to the load cell block 2 via the cantilever type load cell 5, and the projecting beam 2 a of the load cell block 2 comes into contact with and separates from the upper rod 4 a of the multi-stage driving means 4. The portion above the fixed base plate 6 rises with the rise of the multi-stage driving means 4, and when descending, falls with the lowering of the rod 4a or slightly later than the lowering of the rod. Therefore, the first sample piece can move up and down even in a state where it is clamped on the fixed base.

Next, the configuration of the pressing portion H will be described. The vertical portion of the L-shaped block 10 is fixed to the vertical portion of the frame A. The horizontal portion of the L-shaped block is provided with a compression cylinder 11 and a lift cylinder 12, and the rod of each cylinder penetrates the L-shaped block. And it protrudes below. The L-shaped block 10 is provided with two linear bushes 13, each of which has a guide rod 14 penetrating therethrough. A lower end of the guide rod 14 is coupled to a lift plate 15.
That is, the lift plate 15 is configured to be able to move forward and backward toward the L-shaped block 10.

Lift rod 12a of lift cylinder 12
Is an enlarged portion (not shown) formed at the tip of the rod 12a, penetrating the vicinity of the right end of the lift plate 15 in the figure, and supporting the lift plate 15 from below in the figure.

The upper left side of the lift plate 15 penetrates through the hole 16 a of the suspension plate 16 and engages with the suspension plate 16.
7 is in contact with the upper surface of the suspension plate 16. Hole 16
a and the lift plate 15 are loosely fitted, and a slight gap is formed between them.

Below the suspension plate 16, a pressing block 18 having a heater is connected by two rods on one side, and below the pressing block 18, a heat shielding plate 19 is provided.
Is provided. The heat shield plate 19 is rotatable by a rotary actuator 20 from a position covering the lower part of the illustrated clamping block 18 to a retracted position.

The pressurizing cylinder 11 is filled with a fluid maintained at a constant pressure with high precision, and is constantly urged downward. Then, the lift cylinder 12 prevents the compression cylinder 11 from descending. Lift cylinder 12
Is activated by an input signal, the clamping cylinder 11 immediately descends and clamps the overlapped portion of the first and second sample pieces on the moving table. Since the compression cylinder controlled with high precision is used, it is possible to perform the compression in which the timing and the clamping force are accurately adjusted.

Next, the operation of the pressing portion H will be described. When the first sample piece and the portion of the second sample piece to which the adhesive is applied overlap under the pressing portion H, the rotary actuator 20 operates to retract the heat shield plate 19, and subsequently, the lift cylinder 12 releases the lowering suppression of the compression cylinder 11. The compression cylinder 11 descends and the suspension plate 1
6, the pressing block 18 is pushed down, the sample piece is pressed, and the adhesive is heated by the heat of the pressing block 18.

The adhesive applied to the second sample piece on the moving table D starts to dry immediately after being applied, and overlaps with the first sample piece to maintain a constant time until being pressed. Is desirable. From such a viewpoint, the pressing portion H of the present invention is pressed by the pressing cylinder 11 as described above, and the timing is taken by the lift cylinder 12.

Referring to FIG. 3, the structure of the moving table D will be described.
The bed E has a groove E1, and the lower ends of the L-shaped bases 21 on both sides of the moving table D are inserted into the groove E1, for example, a ball screw portion of a driving device provided in the groove. To enable the rectilinear movement toward the fixed base. The moving table D is provided with the moving table position detecting means D 'described above. Alternatively, when a predetermined time has elapsed since the moving table started moving, the adhesive application section F operates. It may be configured to start.

At the upper end of the L-shaped base 21, there is a two-layer board 22 on which four columns 23 are erected.
Slide bush 24 of plate 24 arranged on
a. Between the substrate 22 and the plate 24, there is a known compression-type load cell 29 as a second load measuring device for detecting a vertical clamping force. A driving means 25 composed of an air spring is placed at the center of the four columns 23 on the plate 24, and a lift 26 is placed on the driving means 25. At four corners of the lift 26, there are slide bushes 26a, through which the columns 23 pass. A fixed stopper 27 is attached to the top of the column 23.

The fixed stopper 27 is composed of two plates 27a which are divided into left and right sides in the moving direction of the moving table D, and a horizontal plate 27b connecting them, and the horizontal plate 27b is provided with a leaf spring as a gripping means 28. Have been.

Next, the operation of the moving table will be described. First, the second
The sample piece is placed on the sample placing surface 26b of the lift 26. Compressed air maintained at a constant pressure with high precision is supplied to the air spring of the driving means 25, and the air spring expands to raise the elevator 26. The left and right plates 27a have their inner ends bent downward at right angles, and the second sample piece is clamped between its lower end surface 27c and the sample mounting surface 26b of the lift 26. Second
The adhesive is applied to the upper surface of the sample piece, and this adhesive surface is flush with the lower end surface 27c of the plate 27 and is at a fixed position regardless of the thickness of the sample piece.

When the driving means 25 clamps the second sample piece, the reaction force is applied to the compression type load cell 29. This compression type load cell 29 is for measuring the pressing force, and it is necessary to correct the force applied by the clamp by zero point adjustment and measure only the pressing force.
In this case, if the driving means 25 operates with compressed air maintained at a constant pressure with high precision, the clamping force can be made constant, and the above-mentioned zero point adjustment can be performed accurately and easily.

The holding means 28 clamps one end of the long second sample piece between the lower end surface 27c and the sample mounting surface 26b, and presses the tip end when the protruding other end is bent into a U-shape. It is for. This will be described in more detail in the peel test.

FIG. 4 is a perspective view of the adhesive application section F. The adhesive application section F includes a glue supply section F1 and a glue brush section F2. The glue supply section F1 will be described first. The base 30 is fixed to the frame A, and a slidable pole 31 is attached to the base 30.
Fixed to 2. By loosening the clamp lever 33 and moving the block 32 up and down with the ball clip 32a, the block 32 is adjusted to a desired height, and the clamp lever 33
Is tightened, the block 32 is fixed in that position.

A glue roller 35 fixed to the frame is provided at the lower left of the base 30 so as to be rotatable in the direction of the arrow, and a scraper 34 is slidably provided by a screw 34a. Adjust the thickness of the. 36 is a glue box, 37 is a glue box clamp, 38 is a spring hinge, and 39 is a glue box guide.

Next, the configuration of the paste brush portion F2 will be described. The base of the paste brush 40 penetrates the pressure medium sealing bush 41, and the pressure medium sealing bush 41 is fitted to the holder 43. The direction of the paste brush 40 is determined by a detent pin 42. The holder 43 is supported by a shaft 44 in the vicinity of the lower end, and the shaft 44 is rotatably supported by a bearing 45 fixed to a frame, and is rotated in a direction indicated by an arrow by driving means (not shown).

The glue box 36 is detachable from the glue supply unit F1, and after being removed, a molten liquid adhesive is put therein. To accommodate the glue box 36 in the glue supply unit F1,
First, the clamp lever 33 is loosened, and the block 32 is lowered to a position where the glue roller 35 does not hinder the insertion of the glue box 36. The glue box 36 is inserted into the lower part of the glue roller 35 along the guide 39. After being inserted into the predetermined position, the glue box clamp 37 is returned to the original position so that the glue box does not pop out. Block 32
Is raised, and the lower surface of the roller 35 is adjusted so as to reach the glue in the glue box 36 and fixed with the clamp lever 33.

When the movable table position detecting means D 'described with reference to FIG. 1 detects that the second sample piece clamped on the movable table has reached a predetermined position, the shaft 45 starts rotating in the direction of the arrow. . The paste brush 40 is connected to the paste roller 35 of the paste supply unit F1.
When the adhesive is further rotated and reaches the lower side of the figure, the glue is applied to the second sample piece that has reached this position. Axis 4
Reference numeral 5 further rotates and stops when it returns to the initial position shown in the figure, and prepares for the next coating. The application pressure of the glue is load cell 2
9 can be detected.

FIGS. 5 and 6 are diagrams showing a mechanism for changing the radius of rotation of the paste brush 40 and adjusting the contact with the paste roller 35. FIG. First, in FIG. 5, the paste brush 40 penetrates through the hollow portion of the pressure medium sealing bush 41, and the pressure medium sealing bush 41 is fitted into a space in the holder 43.

FIGS. 6 (a) and 6 (b) show the pressure medium sealed bush 4
FIG. 2 is a diagram showing details of a first example. In FIG.
The pressure medium sealed in b is pressurized by tightening the pressure screw 41a, and moves into the sleeve 41c. Then, the pressure in the sleeve 41c increases,
The shaft-side sleeve 41d contracts, and the hub-side sleeve 41e expands.

Therefore, the paste brush 40 is applied to the paste roller 3
In order to come to the surface of No. 5, the pressure screw 41a is first loosened, the glue brush 40 is made movable, and the tip of the glue brush 40 is brought to a position where it comes into contact with the glue roller 35 in a desired state. . Then, the pressure screw 41a is tightened, and the pressure of the sleeve 41c is increased to fix the paste brush 40 to the holder 43.

FIG. 7 shows another embodiment of the moving table. Most of the structure is the same as that of the embodiment shown in FIG. 3, and therefore, different points will be mainly described. In this embodiment, the columns 23 are vertically divided at the plate 24. That is, the lower support 23b as the first support is fixed at the upper end to the plate 24, and is slidably connected to the substrate 22 by inserting the lower end into the ball bush 22a. The upper support 23a as a second support is fixed at the lower end to the plate 24, and the upper end is inserted through the slide bush 26a of the lift 26. The compression type load cell 29 is provided between the plate 24 and the substrate 22 as in the embodiment of FIG.

In the configuration shown in FIG. 3 or FIG.
When 5 clamps the second sample piece, the reaction force is applied to load cell 29 as described above. Therefore, when the first and second sample pieces are overlapped and clamped, the zero point of the load cell is moved to the deformed position due to the clamping force (the zero point is adjusted), and then the clamping force is measured. Become. At this time, the expansion and contraction of the drive means 25 may not be completely vertical but extend as if twisted as a whole, and the twist may be transmitted to the support 23 in FIG. In such a case, the zero point adjustment of the load cell 29 becomes unstable.

However, even in such a case, if the strut 23 is vertically divided like 23a and 23b as shown in FIG. 7, the torsion is absorbed by the upper strut 23a, and the torsion is applied to the load cell 29. Since only the load from which the influence is eliminated is added, the above-mentioned zero-point adjustment can be performed stably, and accurate measurement of the pressing force can be performed.

Next, using FIGS. 8 to 21, the sample pieces α,
The operation of the adhesive force measuring device of the present invention when thick paper is used for β will be described. In these figures, a line 1 indicated by a dashed line indicates the position of the adhesive application surface. FIG.
This is a state where the first sample piece α is placed on the fixed base plate 6.
The air cylinder 9 has not been operated yet, and the multi-stage driving means 4 is in a position where the lower surface of the first sample piece α coincides with 1 in a state where only the lower rod 4b is operated.

FIG. 9 shows a state in which the air cylinder 9 and the upper rod 4a of the multi-step driving means 4 are operated to clamp the left end of the first sample α. The first sample piece α is raised above the application surface l.

FIG. 10 shows the shielding plate 1 as the moving table approaches.
Reference numeral 9 denotes a state in which evacuation is started. FIG. 11 shows a state in which the elevating table 26 on which the second sample β is placed comes, and the tip end thereof comes under the first sample α to overlap. An adhesive is applied to the top end of the second sample piece β. Shield plate 1
9 has completed the evacuation.

FIG. 12 shows a state in which the lift cylinder 12 stops stopping the compression cylinder 11 from descending, the compression cylinder 11 starts descending, and the compression block 18 approaches the first sample α.

Here, if the clamping block 18 comes down while the first sample piece is clamped in the state shown in FIG. 11, the first sample piece α becomes as shown by the two-dot chain line in FIG. Then, it becomes oblique and adheres to the second sample β, and it is impossible to obtain a sufficient adhesive force, and the measurement of the adhesive force becomes inaccurate.

Therefore, as shown in FIG. 12, before the pressing block 18 comes into contact with the first sample α, the rod 4a above the multi-step driving means 4 descends, and then, as shown in FIG. The air cylinder 9 is lifted to release the clamp of the first sample piece α.

FIG. 14 shows a state in which the clamping block 18 has come down and has come into contact with the overlapping portion of the first and second sample pieces α and β after the clamp of the first sample piece α is released. The upper rod 4a of the multi-step driving means 4 descends, and the lower rod 4b also descends and descends to the lowest position. Further, the fixed base plate 6 also moves away from the first sample piece α and descends to a position where it comes into contact with the upper rod 4 a of the multi-stage driving means 4.

FIG. 15 is a continuation of FIG. As a result, the first and second sample pieces are sufficiently bonded,
The adhesive is heated by the pressing block 18. The pressing force is detected by the load cell 29 provided between the substrate 22 and the plate 24 described with reference to FIG. 3, and a desired pressing force can be applied. The pressing time can also be set to a desired time by a known timer.
As described above, since the second sample piece is clamped with a constant force, the zero-point adjustment of the load cell 29 can be performed accurately, and the clamping force can be detected with high accuracy.

FIG. 16 shows a state in which the multi-stage drive means 4 starts to rise before the clamping is completed and the clamping cylinder 11 rises. At the same time, the air cylinder rod 9
a also starts to fall.

Then, as shown in FIG. 17, the first sample α is clamped again by the rods 9a and 4a, the pressing cylinder 11 is raised by the lift cylinder 12, and
The pressing block 18 is separated from the first sample α.

In FIG. 18, the compression cylinder 11 and the lift cylinder 12 have finished returning to the initial state, and the heat shield plate 19 has returned. Then, in the state of FIG. 19, the elapse of a predetermined time is waited, and the adhesive effect of the adhesive is developed.

After the lapse of a predetermined time, as shown in FIG. 20, with the first sample α being clamped, the lift 26 moves in the direction of the arrow to apply a tensile force to the bonded portion, and a tensile shear test is performed. Done. The tensile force applied to the bonded portion until the bonded portion is peeled off is measured by the cantilever load cell 5 shown in FIG.

After the completion of the tensile shear test, as shown in FIG. 21, the rod 9a is lifted by the air cylinder 9 to release the clamp of the first sample piece, and the lift table on which the peeled two sample pieces β are placed. 26 returns to the initial position. After the test, the first and second sample pieces α and β are removed, and the measuring instrument waits for the next test.

The test methods shown in FIGS. 8 to 21 are for the case where a thick sheet is used as a sample piece, and the case of a thin sheet material is slightly different from the above. That is,
The first sample piece α is clamped by lowering the pressing cylinder 9 from the state shown in FIG. 8, and there is no need to increase the height of the first sample piece. A tensile test can be performed.

The tensile shear test is performed as described above. Next, the peel test will be described. FIG. 22 shows a state where the moving table clamps the second sample β for the peeling test. In the case of the peeling test, a long second sample piece β is used. One end is clamped between the lifting table 26 and the fixed stopper 27 in the same manner as in the above-described tensile shear test, and the other end is folded back and moved. It is superimposed on the table (on the elevating table 26 or on the fixed stopper 27), and the tip is pressed by the gripping means 28. Then, an adhesive is applied like γ as in the case of the tensile shear test, and the adhesive is bonded in the same manner as described above.

FIG. 23A shows a state in which the first sample α is superimposed on and adhered to the second sample β on which the adhesive is applied in the state of FIG. 22, and is a view corresponding to FIG. 15 described above. is there. FIG.
FIG. 3 (b) shows a state in which a peeling test of the bonded portion is being performed. When the moving table D returns to the original position, the tip of the second sample piece β comes off the holding means 28, and a peeling test is performed as shown in the figure. Although not shown, the first sample piece α is
The left end is in a clamped state.

[0054]

As described above, according to the adhesive force measuring device of the present invention, the adhesive applied surface of the sample piece is pressed against the fixed stopper by the driving means and clamped at a fixed position. It is not necessary to adjust the height of the elevating table regardless of the change in the thickness of the sample piece, and it is possible to measure the adhesive force accurately while keeping the adhesive pressure constant.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entirety of an adhesive force measuring device of the present invention.

FIG. 2 is a perspective view showing a configuration of a fixing stand and a pressing portion of the adhesive force measuring device in the adhesive force measuring device.

FIG. 3 is a perspective view showing a configuration of a moving table of the adhesive force measuring device.

FIG. 4 is a perspective view showing a configuration of an adhesive application section of the adhesive force measuring device.

FIG. 5 is a longitudinal sectional view showing a detailed structure of a glue brush portion of the adhesive application portion.

FIGS. 6A and 6B are diagrams showing a configuration of a pressure medium sealing bush used for a paste brush portion, wherein FIG. 6A is a top view and FIG. 6B is a front view.

FIGS. 7A and 7B are diagrams showing another embodiment of the moving table, wherein FIG. 7A is a perspective view of the entire moving table, and FIG. 7B is an exploded perspective view of a main part.

FIG. 8 is a view for explaining the operation of the adhesive force measuring device of the present invention,
This is a state where the first sample piece α is placed on the fixed base plate 6.

FIG. 9 is a diagram showing a state where the left end of the first sample piece α is clamped.

FIG. 10 does not show a state in which the shielding plate 19 starts retreating as the moving table approaches.

FIG. 11 is a view showing a state in which the lifting platform 26 comes to the second sample piece β by clamping it, and the tip comes to the lower part of the first sample piece α and overlaps.

FIG. 12 is a diagram showing a state in which the first sample piece α is released from being clamped.
FIG. 4 is a diagram showing a state in which a rod above a multi-step driving unit 4 is lowered.

FIG. 13 shows a diagram for releasing the clamp of the first sample piece α.
FIG. 3 is a view showing a state where an air cylinder 9 is raised.

FIG. 14 is a view showing a state in which after the clamp of the first sample piece α is released, the pressing block 18 slowly moves down and comes into contact with the overlapping portion of the first and second sample pieces α and β.

FIG. 15 is a view showing a state in which pressure clamping is being performed subsequently to FIG. 13;

FIG. 16 is a view showing a state in which the multi-step driving means 4 starts to lift before the pressing cylinder 11 is lifted after the pressing is completed.

FIG. 17 is a view showing a state where the first sample piece α is again clamped by the rods 9a and 4a.

FIG. 18 is a view showing a state in which the compression cylinder 11 and the lift cylinder 12 have finished returning to the initial state, and the heat shielding plate 19 has returned.

FIG. 19 is a diagram waiting for a predetermined time to elapse.

FIG. 20 is a diagram showing a state in which a tensile force is applied to the bonded portion to perform a tensile shear test.

FIG. 21 is a diagram showing a state in which measurement is completed and the state returns to the initial state.

FIG. 22 is a perspective view showing a clamped state of a second sample piece when a peel test is performed.

23A is a diagram showing a state where the first and second sample pieces are bonded from the state shown in FIG. 21, and FIG. 23B is a diagram showing a state of a peeling test.

[Explanation of symbols]

 α First sample piece β Second sample piece C Fixed table 5 First load measuring device 6 Fixed table plate 8 Clamp plate 9 Air cylinder H Clamping section 11 Compression cylinder 12 Lift cylinder 18 Compression block D Moving table D ' Moving table position detecting means 23a Second support 23b First support 25 Driving means 26 Elevating table 27 Fixed stopper 29 Second load measuring device F Adhesive application unit F1 Glue supply unit 35 Glue brush

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-195230 (JP, A) JP-A-4-27842 (JP, A) JP-A-2-195231 (JP, A) JP-A-2-19523 195229 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01N 19/00-19/10 G01N 3/00-3/62

Claims (4)

(57) [Claims] 1. A fixed table for clamping a first sample piece, a movable table for clamping a second sample piece and moving back and forth in the direction of the fixed table, and fixed between the fixed table and the movable table. An adhesive application section that applies an adhesive to the surface of the second sample piece moving toward the table, and is provided near a side where the second sample piece clamped by the movable table and the first sample piece clamped by the fixed table overlap. An adhesive force measuring device having a pressing portion for pressing the overlapped portion of the first and second sample pieces, wherein the moving table includes a lifting table on which the second sample piece is mounted, and a second table on the lifting table. A fixed stopper for holding the sample piece, and a driving means for moving the elevating platform toward and away from the fixed stopper;
An adhesive force measuring device, wherein a surface of the sample piece that contacts the fixed stopper is a surface to which the adhesive is applied. 2. The adhesive force measuring device according to claim 1, wherein a gripping means for holding the second sample piece is provided at an end of the moving table. 3. The adhesive application section has a paste brush, and the paste brush is rotatable from a position for receiving the adhesive from the paste supply section to a position for applying the adhesive to the second sample piece. The adhesive force measuring device according to claim 1, wherein the adhesive force measuring device is supported and has a variable radius of rotation. 4. The adhesive force measuring device according to claim 1, wherein the adhesive application unit includes a unit that detects a position of the moving table.