JPH0339636A - Non-tackiness evaluating and testing machine - Google Patents

Abstract

PURPOSE:To improve measurement accuracy, reproducibility and workability by providing a sample base provided adjustably in angle with a sample imposing surface and a moving means which is mounted with the peeling end of a material to be measured and is constituted movably in the extending direction of a guide member. CONSTITUTION:A test plate 1 is imposed and fixed onto the sample base 17. One end of a wire 25 is fixed to the peeling end of a tacky material 2 and the other end is fixed to a wire chuck 26. The wire 25 is adjusted to face a perpendicular direction by adjusting a positioning mechanism 9 (an adjust bolt 21 and a slider 24). A key board 66 is operated to input a peeling speed, distance, angle and temp. The moving speed and distance of a load detector 4 in the perpendicular direction and horizontal direction are then calculated. A measurement start key is turned on and pulse motors 27, 37 are controlled to move the detector 44 in the moving direction at the computed moving speed when the temp. detected by a temp. sensor 62 equals to the inputted peeling temp. The load detected by the detector 44 is displayed 68 as tacky adhesive strength. The motors 27, 37 are stopped when the detector 44 arrives at the computed moving distance.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a non-adhesive property evaluation tester, and in particular, it measures the force required to separate a sticky object from a sticky object, that is, the adhesion force. This invention relates to a non-adhesion evaluation tester for evaluating properties.

[Problems to be solved by the prior art and the invention] Evaluating the non-adhesiveness of objects to be adhered to is difficult in the field of surface treatment, adhesion and
This is particularly important in the adhesive field. There are many types of adhesives that can be attached to objects, such as adhesive tapes, foods, plastics, adhesives, rubbers, etc., and their properties and characteristics also vary. The most important point in evaluating non-adhesion is to measure physical quantities related to non-adhesion under conditions close to those in the practical environment. As a physical quantity related to non-adhesion, adhesive force, which is approximately inversely proportional to non-adhesion, is generally used, and non-adhesion is evaluated by measuring this adhesive force. The peeling angle in this adhesive strength measurement test is generally 90 degrees or 180 degrees.

Figure 1 shows a conventional non-adhesion evaluation tester. Pulleys 4.8 are rotatably attached to both ends of the sample stage IO, on which the angle of the sample mounting surface relative to the horizontal plane can be adjusted.

A vertically moving body 6 that is movable vertically is arranged above the sample stage 10 . A load detector 5 is fixed to the vertically moving body 6 . One end of the test plate 1 placed on the sample stage 10 is attached to the vertically movable body 6 by a wire 3 wrapped around a pulley 4. In addition, test plate 1
A weight 7 is connected to the other end via a wire 9 wrapped around a pulley 8.
is connected. According to such a non-adhesive property evaluation tester, the peeled end of the adhesive material 2 stuck to the test plate 1 and the load detector 5 provided on the vertically moving body 6 are connected with a wire,
When the vertically moving body 6 is moved upward, the adhesive material 2 is peeled off from the test plate 1. The force required for peeling at this time, that is, the adhesive force, is detected by the load detector 5. Then, the non-adhesiveness is evaluated based on this adhesive force.

In order to perform a test by changing the peeling angle θ in this non-adhesion evaluation tester, the mounting surface of the sample stage 10 is inclined with respect to the horizontal plane as shown in FIG. 2, and the wire 3 is further moved in the vertical direction. It is necessary to change the attachment position to the body 6 and the length of the wire 3. Furthermore, when testing is performed by frequently replacing the test plate 1, the weight 7 must be attached and detached from the test plate 1 each time. For this reason, the non-adhesion evaluation testing machine shown in FIG. 1 has a problem in that the test workability is poor.

The non-adhesiveness evaluation tester shown in Figure 3 can be used manually to
However, it is difficult to maintain a constant peeling speed and peeling angle, and test reproducibility and individual differences pose problems. In addition, in this testing machine, the load detector 5 is attached to the ↓0 side of the sample stage for manual peeling.

The non-adhesive property evaluation tester shown in FIG. This is what I used. According to this testing machine, it is possible to perform peeling at a constant peeling speed by adjusting the peeling speed with the variable speed motor 11, but in order to keep the peeling angle constant, the tension device 12 must be synchronized with the peeling speed. Therefore, it is difficult to maintain a constant peeling angle.

In order to keep this peeling angle constant, as shown in FIG.
, a belt 50 is passed between the pulley 51 and a pulley fixed to the shaft of the variable speed motor 13, and the tension device 12 is moved by the belt 50. In this way, it is possible to conduct a test by setting the peeling angle to an arbitrary value between 0 and 180 degrees. However, it is necessary to set the angle of the sample stage 10, and then set the moving guide 14 so that it is parallel to the inclination angle of the sample stage 10, and furthermore, the variable speed motor 11 and The speed of the variable speed motor 13 must also be set. For this reason, there is a problem that the number of setting points is increased compared to the non-adhesion evaluation tester shown in FIG. 1, and the workability of the test is deteriorated.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a non-adhesion evaluation tester with improved measurement accuracy, reproducibility, workability, etc.

[Means to solve the problem]

In order to achieve the above object, the non-adhesion evaluation tester of the present invention includes a sample stage in which the angle of the sample mounting surface is adjustable with respect to the horizontal plane, and a first guide extending in a predetermined direction. a second guide member that extends in a direction intersecting the extending direction of the first guide member and is movable along the first guide member; and a peeled end of the object to be measured. a moving member having a mounting portion for attaching the second guide member and movable in the extending direction of the second guide member; and a moving member movable in a direction corresponding to the peeling angle at a speed corresponding to the peeling angle of the object to be measured. This device includes a driving means for moving the object, and a measuring device for measuring a physical quantity related to the non-adhesion of the object to be measured.

[Effect]

The first guide member of the present invention extends in a predetermined direction, and the second guide member extends in a direction crossing the extending direction of the first guide member and along the first guide member. It is movable.

Further, the movable member including the attachment portion for attaching the peeled end of the object to be measured is movable in the extending direction of the second guide member. Therefore, by controlling the movement of the second guide member and the movement of the moving member, the mounting portion can be moved to any position within the vertical plane. The driving means moves the moving member in a direction corresponding to the peeling angle at a speed corresponding to the peeling angle.

This allows the test to be carried out while keeping the peeling angle and peeling speed constant, thereby making it possible to accurately measure physical quantities related to non-adhesiveness. Physical quantities related to non-adhesion include adhesive force and quantities that are approximately inversely proportional to adhesive force.

〔Effect of the invention〕

As explained above, according to the present invention, the attachment part for attaching the peeled end of the object to be measured is moved to an arbitrary position in the vertical plane at a speed and direction that corresponds to the peeling angle. The effect is that it is possible to conduct a test with good measurement accuracy, reproducibility, and workability by keeping the peeling angle constant.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings. In this example, adhesive strength is measured as a physical quantity related to non-adhesion.

A sample stand 17 is rotatably attached to the upper end of the sample stand support column 18. A test plate holder (not shown) for fixing the test plate 1 is provided on the mounting surface of the sample stage 17. Further, a heater 60 for heating the test plate 1 and a temperature sensor 62 for detecting the temperature of the test plate 1 are embedded in the sample stage 17 . An angle scale plate 16 is fixed to the upper end of the sample stage support column 18.
A pointer 19 is fixed to the sample stage 17 so as to be located on the surface side. A handle 20 is fixed to the rotating shaft of the sample stage 17, and by rotating the handle 20, the angle of inclination with respect to the horizontal plane can be adjusted.

An adjustment bolt 21 is provided at the lower end of the sample stage support column 18. The adjustment bolt 21 is attached to the slide base 22 by a bolt stay 23.
By screwing in the adjustment bolt 21, the slider 24 can be moved and the sample stage 17 can be moved in the horizontal direction. These act as a positioning mechanism for eliminating positional displacement that occurs when the wire 25 connected to the adhesive material 2 is connected to the wire chuck 26.

A pair of vertical guides 54 extending in the vertical direction are provided upright. Both ends of the vertical guide 54 are connected by connecting members 56, respectively. A linear motion bearing 34 and a linear motion bearing 35 are provided to be slidable along each of the vertical guides 54, and the linear motion bearing 34 and the linear motion bearing 35 are fixed to a vertically movable base 36 arranged horizontally. has been done. The connecting member 56 includes a bearing 30 and a bearing 31.
A shaft 32 is provided with a screw, and both ends of the shaft 32 are supported by bearings 31 and 30. One end of the shaft 32 protrudes through the bearing 30, and a pulley 29 is fixed to this protrusion. This pulley 29
is connected by a pulley fixed to the shaft of a pulse motor 27 and a timing belt 28. A single flange nut 33 screwed onto the shaft 32 is fixed to the vertically movable base 36. Therefore, by rotating the pulse motor 27, the shaft 32 is rotated, and thereby the single flange nut 33 screwed with the shaft 32 is moved in the vertical direction, whereby the vertically movable base 3
6 can be moved up and down.

One end of a pair of horizontal guides 43 extending in the horizontal direction is fixed to the vertically movable base 36. A bearing 39 and a bearing 40 are provided at both ends of the horizontal guide 43, respectively, and a shaft 41 having a screw threaded thereon is supported by the bearing 39 and the bearing 40. One end of the shaft 41 protrudes through the bearing 39, and a pulley 38 is fixed to this protrusion. This pulley 38 is connected to a pulley fixed to a pulse motor 37 by a timing belt. A back-and-forth moving base 45 is attached to the horizontal guide 43 so as to be slidable along the horizontal guide 43, and a single flange nut 42 screwed onto the shaft 41 is fixed to this back-and-forth moving base 45. In addition, the back and forth moving base 45 has a pulley 46 at its tip.
A guide stay 47 with a wire chuck 2 at the tip
6 is fixed. Therefore, by rotating the pulse motor 37, the back and forth moving base 45, and therefore the load detector 44, are moved to the horizontal guide 43.
can be moved along.

Pulse motor 27.37, load detector 44, heater 60
, the temperature sensor 62 is connected to a microcomputer 64. Further, a keyboard 66, a CRT 68, and a printer 70 are connected to the microcomputer 64.

The operation of this embodiment will be explained below. The test plate 1 to which the adhesive material 2 is attached is placed on the sample stand 17 and fixed by a sample plate holder. One end of the wire 25 is fixed to the peeled end of the adhesive material 2, and the other end of the wire 25 is fixed to the wire chuck 26. In this state, adjust the positioning mechanism described above to position the wire 25.
Adjust so that it points vertically.

Next, operate the keyboard 66 to enter the peeling speed, peeling distance,
Enter the peel angle and peel temperature. When the start key is turned on, the routine shown in Figure 7 is executed, and step 1 is executed.
At step 00, it is determined whether the input peeling speed is within a specified range. This peeling speed is, for example, 40 mm/
20 mm/min from min to 300 mm/min
It is determined for each. If the peeling speed is not within the specified range, a re-input instruction is displayed on the CRT 68 in step 108. In the next step 102, it is determined whether the input peeling distance is within a specified range. This peeling distance is set to a value of 1 to 60 mm, for example. Next step 1
In step 04, it is determined whether the manually applied peeling angle is within a specified range. This peeling angle can be determined, for example, from 10 degrees to 80 degrees at intervals of 10 degrees. Next step 10
In step 6, it is determined whether the input peeling temperature is within a specified range. If the judgments in steps 102, 104, and 106 are negative, manual instructions are given again in step 108, and if the judgment is affirmative, in step 110, the load detector 44 is moved in the vertical direction (Z-axis) and horizontal direction (Y-axis). Calculate the speed according to the following formula.

However, S is the peeling speed, θ is the peeling angle, S2 is the moving speed of the load detector 44 in the Z-axis direction, and S is the moving speed of the load detector 44 in the Y-axis direction.

In the next step 112, the moving distance of the load detector 44 in the Z-axis direction and the Y-axis direction is calculated based on the input peeling distance. In the next step 114, the peeling temperature is controlled by turning on and off the heater 60. Heater 6
The temperature controlled by 0 is detected by the temperature sensor 62, and in step 116 it is determined whether the peeling temperature detected by the temperature sensor 62 is equal to the input peeling temperature (set temperature). When the peeling temperature becomes equal to the set temperature, it is determined in step 118 whether or not the measurement start key is turned on, and when the measurement start key is turned on, the pulse motor 27 and the Hihalus motor 37 are controlled in step 120. The load detector 44 is moved at the moving speed calculated in step 110. At this time, when the sign of the moving speed S2 is positive, the moving direction of the load detector 44 is upward in FIG. 6, and when the sign of the moving speed S is positive, the moving direction of the load detector 44 is on the left side of FIG. That's the way to go. Further, the load detected by the load detector 44 is displayed on the CRT 68 as adhesive force. Further, it can be printed using the printer 70 if necessary. FIG. 8 is a diagram showing an example of the measurement results of adhesive force.

In the next step 122, it is determined whether the moving distance calculated in step 112 has been reached, and when it is determined that the moving distance has been reached, the pulse motor 27 and the pulse motor 37 are stopped and the measurement is completed.

Then, the non-adhesiveness is evaluated from the adhesive force measured in this way.

As explained above, according to this embodiment, the load detector 44 is moved vertically and horizontally at a speed corresponding to the peeling angle, and the adhesive force is measured by controlling the peeling temperature. Adhesive strength tests can be performed with high precision under conditions close to those in a practical environment, thereby providing the effect that non-adhesiveness can be evaluated with high precision.

In addition, although the example in which the back-and-forth direction movable base is moved along the horizontal guide has been described above, the load detector 44 can be moved horizontally by fixing the back-and-forth direction movable base to the horizontal guide and moving the horizontal guide itself in the horizontal direction. It may be moved in the direction. In addition, although an example in which the load detector 44 is fixed to the front-back moving base has been described, the third
It may be fixed to the sample stage side as shown in FIGS. Furthermore, although an example has been described above in which temperature is adjusted and then measured using one microcomputer, a temperature control device may be provided separately from the computer that controls the peeling rate and the like.

In this way, the temperature can be controlled at all times, so measurements can be made quickly when measuring multiple times.

In addition, although the example of evaluating non-adhesiveness by measuring adhesive force was explained above, it is also possible to convert the adhesive force into an amount approximately inversely proportional to the adhesive force and directly evaluate non-adhesiveness from this amount. good.

Examples of objects that can be evaluated for non-adhesiveness in the present invention include fluororesin coatings, fluororubber, silicone rubber, etc. Examples of adhesives include cellophane tape, vinyl tape, gummed tape, stickers, cooked rice, rice cakes, bread dough, etc. toner for copiers,
There are molding materials, paints, adhesives, rubber, etc.

[Brief explanation of drawings]

1 to 5 are schematic diagrams showing a conventional non-adhesive evaluation tester, FIG. 6 is a schematic diagram showing a non-adhesive evaluation tester according to an embodiment of the present invention, and FIG. FIG. 8 is a flowchart showing the control routine by the microcomputer, and FIG. 8 is a diagram showing a portion of the adhesive force measurement results. 17...Sample stage, 27.37...Pulse motor, 60...Heater, 62...Temperature sensor, 64...Microcomputer.

Claims (1)

[Claims] (1) A sample stage in which the angle of the sample mounting surface with respect to the horizontal plane can be adjusted; a first guide member extending in a predetermined direction; and a direction intersecting the extending direction of the first guide member. a second guide member extending in the direction and movable along the first guide member;
a guide member, a movable member that includes a mounting portion for attaching the peeled end of the object to be measured and is movable in the extending direction of the second guide member, at a speed corresponding to the peeling angle of the object to be measured. A non-adhesion evaluation tester, comprising: a drive means for moving the movable member in a direction according to the peeling angle; and a measuring device for measuring a physical quantity related to the non-adhesion of an object to be measured.