JPH06273316A - Adhesion measuring apparatus - Google Patents

Abstract

PURPOSE:To provide a portable adhesion measuring apparatus capable of measurement of adhesion or exfoliation power of an unvulcanized rubber matter or an adhesive tape, as required, at an appropriate site. CONSTITUTION:The adhesion measuring apparatus 1 comprises a body housing 2 provided integrally with a grip handle 3, a drive source 7 housed in the body housing 2, a plunger member 10 movable reciprocally and linearly in the axial direction and having one end side 10a coupled mechanically with the drive source 7 through a transmission mechanism 8 in the housing 2 and the other end side 10b extending to the outside of the housing 2, and a stress detecting means 11 fixed to the tip 10c of the plunger 10. The apparatus 1 further comprises a standard sample fixing body 12 for fixing a standard sample T to the tip 10c side of the plunger member 10 through the stress detecting means 11, and a mechanism 15 for controlling the linear reciprocal motion of the plunger member 10 between a first advance position and a second retract position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable adhesive force measuring device capable of arbitrarily measuring the adhesive force of a non-vulcanized rubber object or an adhesive tape at an appropriate place. .

[0002]

2. Description of the Related Art As is well known, for example, in manufacturing a viscous rubber product such as non-vulcanized rubber, a manufacturing process of bonding the non-vulcanized rubber members to each other as necessary is carried out. May include. In such a case, since the non-vulcanized rubber itself has adhesiveness as described above, it is possible to bond the non-vulcanized rubber by utilizing the adhesiveness of the non-vulcanized rubber itself without using a special adhesive. it can. The non-vulcanized rubber member thus bonded is then heated and pressed to increase the adhesive strength between the two members. By this treatment, the unvulcanized rubber is vulcanized so that a rubber product having desired strength can be provided.

The state of adhesion between the two members in the non-vulcanized rubber after the above-mentioned vulcanization treatment depends on the quality of the adhesion between both members before the vulcanization treatment. The factor of the quality of this adhesion is
It is said to be due to the adhesive strength of both members. If the adhesive strength of the members is small, the two members will not come into close contact with each other and a gap will be created between the two members. The gap between the two members has a drawback that even after vulcanization, this portion remains as a cavity, or even if it does not remain as a cavity, the adhesive force is significantly reduced and a peeling phenomenon occurs during use as a product, On the other hand, if the non-vulcanized rubber has high adhesiveness, there is a problem that the bonding work of both members becomes difficult.

Therefore, in many cases, in designing the material of the member, the compounding agent and the processing conditions are adjusted so that the adhesive force of the member becomes appropriate. In such cases,
The measurement of the adhesive force of a member is treated as a very important issue. Conventionally, the adhesive force is generally measured by bringing two samples into contact with each other, applying an external force such as a weight and pressing the sample for a predetermined time, and then measuring the force required to separate the two members. It is done by

Conventional adhesive force measuring devices of this type have been proposed as those described in JP-A-51-75580 and JP-A-51-75581. The adhesive force measuring device proposed in these has a structure in which a display cylinder in which a disk-shaped support is fixed to the lower end with a weight sandwiched is temporarily fixed to a frame, and when measuring the adhesive force, , Affix the sample to the peripheral surface of the support, release the fixing of the display tube that is temporarily fixed so that it is separated from the stand and becomes vertical, and let it fall freely on the lower sample fixed on the stand. By bringing the sample and the lower sample into close contact with each other, and then measuring the force required to lift the support upward and separate the two using a spring gauge,
It measures the adhesive strength.

On the other hand, the one disclosed in Japanese Patent Laid-Open No. 57-184951 supports a lower fixing plate with four legs standing on a stand, and is movable up and down by a servomotor mounted on the lower fixing plate. Shaft, a disk-shaped upper sample support fixed to the lower end of the movable shaft, and a lower sample support provided on the load cell fixed to the table, and rotate the servomotor at a constant speed. The movable shaft is lowered, and the lower sample attached to the upper surface of the lower sample support is pressed onto the upper sample attached to the circumferential surface of the upper sample support by the weight of the movable shaft, the upper sample support, and the weight. After that, the adhesive force is measured by raising the movable shaft and measuring the force when the two samples are separated by the load cell.

[0007]

It is generally known that the adhesive strength of non-vulcanized rubber changes with the passage of time. It is also known that the non-vulcanized rubber member changes depending on the manufacturing condition and the storage condition, particularly the condition of the coating that protects the surface from dust and the like. Therefore, in order to increase the reliability of the adhesiveness between the members of the product manufactured by laminating the non-vulcanized rubber member, whether the non-vulcanized rubber member has a predetermined adhesive force in the laminating step, It is necessary to measure and control the adhesive strength.

In the conventional adhesive force measurement, an adhesive force measuring device fixed or placed on a table is used, the weight of the movable part is used as a load to press the two samples, and then the two samples are separated. In order to measure the adhesive force of the member that is flowing through the manufacturing process, cut the sample from the member to be measured and cover the surface so that it is not contaminated with dust etc. I had to bring it to the place where the measuring device was installed. In this case, since the surface of the sample is covered, the surface state changes, and the adhesive force is not necessarily the same as the actual adhesive force in the situation where the manufacturing process is in progress.

On the other hand, for the purpose of measuring the adhesive strength, the member from which the sample is taken will have a damaged portion, so it is discarded, or in the case of a long member, the vicinity taken as the sample is cut, and then again. There are problems that the material is wasted and another work is required in that the splicing must be repaired. Further, in this conventional measurement of the adhesive force, it is extremely difficult to frequently measure a continuously flowing member. Further, the surfaces of these members are often not flat, and sometimes it is impossible to measure. When measuring the adhesive force of a member flowing through the manufacturing process, there are problems as described above. Therefore, conventionally, the adhesive force of the member to be measured has been measured when determining the composition of the material. It was

On the other hand, whether the adhesiveness is good or bad can be judged by the operator's feeling, and therefore the manufacturing conditions were adjusted based on the judgment. However, as the automation progresses, the operator touches the member. Since the number of cases is reduced and the process can flow at high speed, the need for measuring the adhesive force by the adhesive force measuring device is increasing without depending on the operator's sense judgment.

Therefore, an object of the present invention is to make it possible to directly contact a member flowing in the manufacturing process, and to measure the adhesive force of the member by directly contacting the member. To provide a force measuring device.

[0012]

In order to achieve the above-mentioned object, the present invention specifically sets a sticky sheet-like standard sample on the surface of a sticky object to be measured in advance. An adhesive force measuring device adapted to measure the adhesive force of the measured object by measuring the stress generated when the standard sample is pressed for a certain period of time and the standard sample is pulled away from the surface of the measured object. A body housing integrally provided with a grip handle, a drive source arranged in the body housing, and one end side thereof is mechanically connected to the drive source in the body housing via a power transmission mechanism. A plunger portion whose other end extends outside the body housing and is supported with respect to the body housing so as to be linearly reciprocable in the axial direction. And is attached to the other end of the plunger member to detect the stress when the plunger member is pushed into the object to be measured and the stress when the plunger member is pulled back to the object to be measured. A stress detection means for outputting an electric signal, and a standard sample attachment body that is attached to the plunger member via the stress detection means, and has a standard sample attachment portion for attaching the standard sample to the tip, Advance the plunger member to a first advance position, and
Is positioned at the forward position and stopped for a predetermined time, and after the fixed time elapses, the plunger member is retracted to the second retracted position, positioned at the second retracted position, and stopped. And a control mechanism for controlling the adhesion force measuring device.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An adhesive force measuring device according to the present invention will be described in detail below with reference to specific embodiments shown in the drawings. FIG. 1 is a schematic side sectional view showing a specific example of the adhesive force measuring device according to the present invention.
Is a schematic block circuit diagram showing a specific circuit configuration of an adhesive force measuring device according to the present invention,
3A and 3B are schematic side views and schematic front views showing different examples of the measuring unit in the adhesive force measuring device.

In the example shown in FIG. 1, the adhesive force measuring apparatus 1 according to the present invention is basically a sheet-like standard sample T having an adhesive property on the surface Ha of an object H having an adhesive property.
Is pressed for a certain period of time with a preset pressing pressure,
The adhesive force of the measured object H is measured by measuring the stress generated when the standard sample T is separated from the surface Ha of the measured object H.

In the above basic structure, the adhesive force measuring device 1 according to the present invention comprises a body housing 2. The body housing 2 is designed to be lightweight and compact so that it can be conveniently carried, and is integrally provided with a grip handle 3. On one side portion 3a of the grip handle 3, a grip lever 4 for turning on and off the main switch MS of the adhesive force measuring device 1 is provided. The grip lever 4 is supported by a pivot 5, and when the operator grips the grip handle 3 through the grip lever 4, the switch contact of the main switch MS can be operated. Further, the grip handle 3
At the end 3b, a power cord, a connecting cord outlet 6 for connecting to a digital display, etc. is provided.

On the other hand, in the body housing 2,
A drive source 7 for the device is incorporated. The driving source 7 is a DC that obtains a mechanical rotation output in response to an electric signal.
Composed of a motor. The output of the driving source 7 is
It is adapted to be converted into a mechanical linear motion output for linearly reciprocating a plunger member described later through an appropriate power transmission mechanism 8.

A plunger member pivot bearing 9 is provided on the side wall 2a of the body housing 2 to support the plunger member 10 so as to be slidable in the axial direction. is there. The one end side 10a of the plunger member 10 has the body housing 2
Inside, it is mechanically connected to the drive source 7 via a power transmission mechanism 8. The other end 10b of the plunger member 10 extends outside the body housing, and a stress detecting means 11 is attached to the tip 10c thereof. The stress detecting means 11 detects a stress when the plunger member 10 is pushed into the object to be measured H and a stress when the plunger member 10 is pulled back to the object to be measured H and outputs an electric signal. Is.

Further, a standard sample mounting body 12 for mounting the standard sample T on the end portion 11a of the plunger member 10 via the stress detecting means 11.
Is attached. The standard sample mounting body 12 is provided with a standard sample mounting portion 13 on one end side 12a thereof, and a sheet-shaped standard sample T having an adhesive property can be mounted thereto. In the present invention, a temperature detector 14 composed of a thermocouple or the like is attached to the standard sample attachment body 12.

On the other hand, the adhesive force measuring device 1 according to the present invention
Is provided with a control mechanism 15 for controlling the plunger member 10 via the drive source 7. In the specific embodiment shown in FIG. 1, the control mechanism 15 includes a pair of limit switches 16a and 16b. The pair of limit switches 16a and 16b
Is such that the switch contact is turned on and off by a large diameter portion 17 provided on one end side 10a of the plunger member 10. One switch is in contact with the large diameter portion 17 and the switch contact is Is ON, for example, the other switch is out of the large-diameter portion 17, and the switch contact is set to be OFF, for example. In the control mechanism 15, the limit switch 16a
Constitutes a reverse switch, and the limit switch 16b constitutes a stop switch.

In the embodiment shown in FIG. 1, the adhesive force measuring device 1 according to the present invention comprises an object restraining member 18. The object restraining member 18 is attachable to and detachable from a pole 19 which extends outwardly from the side wall 2a of the body housing 2 and is substantially parallel to the plunger member 10. A leg 21 connected by a fixing screw 20 and a restraining plate 22 having a window 23 that allows the standard sample mounting body 12 at the tip of the plunger member 10 to pass therethrough.

FIG. 3 shows an adhesive force measuring device 1 according to the present invention.
3 shows a different example of the standard sample attaching mechanism, which works effectively when the surface of the object to be measured has unevenness. In the embodiment shown in FIG. 3, the standard sample attaching mechanism 12A has a sample attaching member 24 attached to the tip of the plunger member 10, and a Tyco type annular sample is attached to a pivot 25 provided in the sample attaching member 24. The mounting body 26 is connected. The Tyco type annular sample mounting body 26,
A plurality of holes 27 are provided on the same circumference, and a pin 28 which can be inserted through the sample mounting member 24 is inserted and fixed therein, and the contact point P for the object to be measured can be newly changed. It is configured as follows.

FIG. 2 shows an adhesive force measuring device 1 according to the present invention.
3 is a block circuit diagram showing a circuit configuration in FIG. The driving source 7 in the adhesive force measuring device 1 is an electric amplifier 30,
The speed setting circuit 31 and the timer circuit 32 use the limiter circuit 33 to control the plunger member 10 in the adhesive force measuring device 1 at a constant speed. In the forward movement control state of the plunger member 10 by the drive source 7,
When the standard sample T attached to the tip of the plunger member 10 comes into contact with the surface Ha of the object to be measured H and the predetermined contact load is detected, the drive source 7 stops and the timer circuit 32 Thus, the crimping state of the standard sample T to the object to be measured H is maintained for a predetermined time. Next, after a preset time has elapsed, the drive source 7 causes the plunger member 10 to start retracting, and when the plunger member 10 retracts to the maximum retracted position, this is detected by the limit switch 16b, and the limiter circuit 33 functions to retract the plunger member 10. Stop working.

In the adhesive force measuring device 1 according to the present invention, since the stress detector 11 for detecting the adhesive force and the peeling force is always a double-sided type of compression and tension, the maximum value of the adhesive force and the peeling force is measured by the stress. It is measured by the peak hold circuit 36 via the amplifier 34 and the stress control circuit 35, and is numerically displayed on the digital display 37. In the adhesive strength measuring device 1, the temperature detector 14 attached to the standard sample attachment body 12 detects the temperature change at the time of peeling and displays it on the temperature indicator 39 via the temperature converter 38. It has become.

Next, the adhesive force measuring device 1 according to the present invention
The operation mode of will be described in detail with reference to FIGS. 1 and 2. First, the adhesive force measuring device 1 prepared in the mode as shown in FIG. 1 has the outer surface 18a of the object restraining member 18 thereof.
Is pressed from above the surface Ha of the object H to be perpendicular to the surface Ha. In this state, the measurement operator grips the grip lever 4 provided on the grip handle 3 and operates the main switch MS. Main switch MS
ON operation of the drive source 7, the plunger member 10 in the second retracted position is moved forward, and the standard sample T attached to the tip of the plunger member 10 is transferred to the object to be measured. The stress is measured by the stress detecting means 11 while passing through the window 23 of the pressing plate 22 in the pressing member 18 and contacting the surface Ha of the object H to be measured, and the stress is calculated by an electric circuit to set a preset stress. At that point, the conduction to the drive source 7 is cut off, and the advance of the plunger member 10 is stopped. Next, the grip handle 3
When the grip lever 4 provided on the plunger member 10 is opened and the main switch MS is turned off to interrupt the forward circuit of the plunger member 10, the large diameter portion 17 of the plunger member 10 is cut off.
Then, the reverse limit switch 16a is pushed down, and the electric circuit of the drive source 7 is in a closed circuit state.
Plunger member 10 begins to retract. When the large-diameter portion 17 of the plunger member 10 contacts the stop limit switch 16b, the retreat stops. While the plunger member 10 is retracting, the standard sample T is peeled from the surface Ha of the measured object H. The electric signal generated by the stress detecting means 11 having a function of transmitting an electric signal proportional to the stress generated when the two are separated is input to the arithmetic circuit to be converted into the magnitude of the stress and displayed on the digital display. This is measured as adhesive force or peeling force.

According to the adhesive force measuring device of the present invention having the above-described structure, in the basic structure, a body housing integrally provided with a grip handle made of, for example, plastic molding, and a drive arranged in the body housing. And a plunger member that is combined with the body housing and that can be linearly reciprocated in the axial direction are included in the components. The structure is relatively simple, the assembly is easy, and the compact design is possible. In this respect, it can be said that it works extremely effectively. Furthermore, the adhesive force measuring device of the present invention is a hand-type measuring device, is suitable for carrying, and can be directly brought into contact with any scene in the field, particularly, a member to be measured which is flowing through the manufacturing process. It is suitable for use such as being able to directly contact and measure the adhesive force of the member to be measured, and has excellent handleability, and it can be said that it also acts extremely effectively in these respects.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view showing a specific example of an adhesive force measuring device according to the present invention.

FIG. 2 is a block circuit diagram showing a circuit configuration in the adhesive force measuring device according to the present invention.

FIG. 3A is a schematic view showing an example of a standard sample attachment mechanism which works effectively in the case where the surface of an object to be measured has unevenness in the adhesive force measuring device according to the present invention. FIG. 3B is a side view, and FIG. 3B is a schematic side view thereof.

[Explanation of symbols]

 1 Adhesive force measuring device 2 Body housing 3 Grip handle 4 Grip lever 7 Drive source 8 Power transmission mechanism 9 Plunger member pivot support bearing part 10 Plunger member 11 Stress detection means 12 Standard sample attachment part 13 Standard sample attachment part 14 Temperature detection 15 Control mechanism 16a, 16b A pair of limit switches 17 Large diameter part of plunger member 18 Object restraining member 30 Electric amplifier 31 Speed setting circuit 32 Timer circuit 33 Mitter circuit 34 Stress measurement amplifier 35 Stress control circuit 36 Peak hold circuit 37 Digital Display 38 Temperature Converter 39 Temperature Display MS Main Switch H DUT T Standard Sample

1. A sticky sheet-shaped standard sample is pressed against a surface of an object to be measured having an adhesive property for a certain period of time at a preset pressing pressure, and the standard sample is separated from the surface of the object to be measured. An adhesive force measuring device adapted to measure the stress generated at the time to measure the adhesive force of the object to be measured, comprising a body housing integrally provided with a grip handle, and a drive arranged in the body housing. Source and one end side are mechanically connected to the drive source in the body housing via a power transmission mechanism, and the other end side extends outside the body housing, and the standard sample is attached to the tip thereof. A plunger member having a standard sample mounting portion for mounting and supported so as to be capable of linearly reciprocating in the axial direction; and mounting on the plunger member. A stress detecting means for detecting a stress when the plunger member is pushed into the object to be measured and a stress when the plunger member is pulled back to the object to be measured, and outputting an electric signal; and the plunger. The member is advanced to the first advance position, positioned at the first advance position, stopped for a predetermined fixed time, and after the fixed time elapses, the plunger member is retracted to the second retracted position. And a control mechanism for positioning and stopping at the second retracted position.

Claims (1)

[Claims] 1. A sticky sheet-shaped standard sample is pressed against a surface of an object to be measured having an adhesive property for a certain period of time at a preset pressing pressure, and the standard sample is separated from the surface of the object to be measured. An adhesive force measuring device adapted to measure the stress generated at the time to measure the adhesive force of the object to be measured, comprising a body housing integrally provided with a grip handle, and a drive arranged in the body housing. Source and one end side are mechanically connected to the drive source in the body housing through a power transmission mechanism, and the other end side extends outside the body housing, and is linearly reciprocable in the axial direction. As described above, the plunger member supported with respect to the body housing is attached to the tip of the other end of the plunger member, and A stress detecting means for detecting a stress when the plunger member is pushed into the workpiece and a stress when the plunger member is pulled back with respect to the object to be measured, and outputting an electrical signal; and the plunger member via the stress detecting means. And a standard sample mounting body having a standard sample mounting portion for mounting the standard sample at a tip thereof, and the plunger member is advanced to a first advance position, and at the first advance position, A control for positioning and stopping for a predetermined fixed time, retracting the plunger member to a second retracted position after positioning for a fixed time, and positioning and stopping at the second retracted position An adhesive force measuring device comprising a mechanism.