JPH0620130Y2 - Power transmission mechanism of adhesive force measuring device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention applies an adhesive to an adherend such as paper at a very high speed, and accurately applies it to the application position of the adherend, and then adheres the adhesive. The present invention relates to a power transmission mechanism of an adhesive force measuring device that measures force.

[Conventional technology and problems]

In the case of adhering paper or the like with an adhesive in an extremely short time, such as a high-speed packaging machine or a high-speed cigarette hoisting machine in recent years, the adhering conditions, that is, the adhesive applying speed, the adhesive applying amount, the adhesive applying Application time, adhesion time, adhesion temperature, adhesion pressure, and time left after adhesion are important factors that influence the adhesive strength. Adhesive strength is measured under the same conditions as in actual cases. There must be.

However, when the coating speed is high, for example, 1.5 m / sec or more, the stop position of the second sample mounting member has a large variation in the stop position in the conventional machine.
An error of 1-2 degrees or more may occur in the angle.

For this reason, there is a problem that the bonding position is displaced and causes an error in measuring the adhesive force.

In the power transmission mechanism of the conventional adhesive force measuring device, the rotational drive of the second sample piece mounting member transmits the rotational force of the main motor through the clutch, and when stopping, disengage the clutch immediately before the stop position, A mechanism for applying a brake to stop at a predetermined position at almost the same time was adopted, but the following causes were considered to be the cause of the large stop error at the bonding position of the second sample piece mounting member.

(a) Since the mass of the drive system including the second sample piece mounting member and glue member is large, the moment of inertia of the drive system including the second sample piece mounting member is particularly high when the adhesive application speed is high. Becomes large and the braking force becomes insufficient. (B) The adhesive application speed changes depending on the adhesive conditions, so the moment of inertia also changes.

Therefore, the stop position changes when a constant braking force is applied.

Therefore, for (a), equip a brake with sufficient braking force, and for (b), change the timing to apply the braking force according to the application speed (at this time, the braking force is constant), etc. By taking the above procedure, the variation of the stop position was reduced when the coating speed was high, but the angle still varied by about 1 to 2 degrees as described above.

It is considered that this is because the braking force depends on the mechanical frictional force, which is affected by wear of the frictional surface, temperature and humidity, and causes a variation in a certain range.

The present invention has been made to solve this problem.

[Means for solving problems]

The present invention is constituted by two means for solving the problems, and the first means is a second sample piece mounting member of an adhesive force measuring device, an adhesive stirring roll, and a crimping member for crimping the first sample piece and the second sample piece. By providing separate power transmission mechanism to each,
The inertial mass of the power transmission mechanism of the second sample piece mounting member is reduced to facilitate the positioning stop of the second sample piece mounting member.

The second means is the power transmission mechanism of the second sample piece mounting member,
We have two clutches that are in the opposite direction and the operation is reversed.
A main motor with high positioning accuracy was connected to one clutch, and a high torque measurement motor was connected to the other clutch.

The configuration of the present invention is such that the second sample piece is attached to the second sample piece attachment member rotatably provided close to the first sample piece attached to the tensile force detector. The second sample piece glued by the adhesive transfer segment of the gluing member that rotates in synchronization with the rotation of the member is adhered to the first sample piece after stopping at a position close to the first sample piece, and the second sample piece An adhesive force measuring device in which the viscosity strength of an adhesive portion is measured by rotation of a sample piece mounting member, comprising: a rotating shaft (6) fixedly provided with the second sample piece mounting member (5).
The shaft (26) is connected to the shaft via the clutch (28), and the gear (27) fixedly mounted on the shaft (26) is connected to the main motor (2).
The rotary shaft (6) is provided with a clutch (32) which meshes with a gear (25) fixed to the output shaft of 4) and which is disengaged or engaged when the clutch (28) is engaged or disengaged. , A gear (31) meshing with a pinion (30) fixed to the output shaft of the measuring motor (29) is fixed to the clutch (32), and a shaft (fixed to the adhesive transfer segment (17) ( 1
6) is connected to the shaft (34) via a timing belt,
The pinion (35) fixed to the shaft (34) is fixed to the rotating shaft (6), and the clutches (28) and (3) are fixed.
The gear (33) located between 2) is meshed, and the output shaft of the motor (39) driven synchronously with the main motor (24) is attached to the shaft (19) fixed with the adhesive stirring roll (20). It is characterized by being connected.

[Action]

Since the inertial mass of the second sample piece mounting member and its drive system, which affects the stopping accuracy of the second sample piece, is minimized, the stop positioning of the second sample piece mounting member is facilitated.

Further, the stepping motor can be used as the main motor used for positioning the second sample piece mounting member, and the positioning accuracy of the second sample piece mounting member is improved.

Further, when the sample piece is pulled, the second sample piece mounting member is rotated by the high-torque measuring motor, so that the measurement of the tensile test becomes easy and accurate.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

For the measuring unit of the measuring device, see Japanese Examined Patent Publication No. 57-42184.
It basically has the same structure as.

That is, as shown in FIG. 2, a tensile force detector 2, for example, a stress-resistance conversion type detector is provided on the machine frame 1, and the first sample piece 3 is attached so as to hang down at the detection end of the tensile force detector 2. A mounting tool 4 is provided.

Then, in proximity to the first sample piece 3, the second sample piece attachment member 5
Is fixed to a rotary shaft 6 pivotally attached to the machine frame 1.

A mounting tool 9 for mounting the second sample piece 8 is provided at the tip of the outer peripheral surface 7 of the second sample piece mounting member 5 in the rotational direction, and the outer peripheral surface 7 on which the second sample piece 8 is mounted is centered on the rotation shaft 6. It rotates on the circumferential surface 10.

Although the structure of the fixture 9 shows a type in which the second sample piece 8 is sandwiched by the claws biased by the spring 11, the second sample piece 8 may be vacuum-adsorbed on the outer peripheral surface 7.

A crimping member 12 is mounted on the machine frame 1 on the left side of the circumferential surface 10, the lever 14 is swung by the reciprocating rotation of the shaft 13, and the pressing portion 15 is coated with the first sample piece 3 and the adhesive. Then, the second sample piece 8 is pressed.

Further, a gluing member shown below is provided on the upper right side of the circumferential surface 10.

That is, the adhesive transfer segment 17 that rotates together with the shaft 16 pivotally attached to the machine frame 1 is provided, and the rotation locus 18 of the tip of the segment 17 is in a positional relationship of being in contact with the circumferential surface 10.

The rotation locus 18 is the adhesive stirring roll 2 that rotates with the shaft 19.
The adhesive stirring roll 20 contacts the adhesive in the adhesive container 21.

The adhesive container 21 can be tilted about a support shaft 22 as a fulcrum, and the adjusting screw 23 can adjust the distance between the adhesive container 21 and the adhesive stirring roll 20.

The measuring section of the adhesive force measuring device configured as described above is operated by the power transmission mechanism shown in FIG.

In the figure, the machine frame 1 has a front wall 1A and a rear wall 1B,
The motor 24 disposed behind the rear wall 1B is a stepping motor or the like that rotates according to the commanded number of pulses. A gear 25 is fixed to the output shaft end of the main motor 24. Gear 27 fixed to 26
Mesh with.

The shaft 26 is connected to the rotary shaft 6 via a clutch 28.

On the other hand, as the measurement motor 29 fixed to the rear wall 1B, an accurate high torque motor having a constant rotation speed and no pulsation in rotation is used.

A pinion 30 is fixed to the output shaft end of the measuring motor 29, and a gear 31 meshing with the pinion 30 is fixed to a clutch 32 provided on the rotary shaft 6.

Therefore, the power of the measurement motor 29 is transmitted to the rotary shaft 6 when the clutch 32 is operated on the input side, but the power of the measurement motor 29 is not transmitted to the rotary shaft 6 when the clutch 32 is operated on the disengaged side.

Further, a gear 33 is fixed to the rotary shaft 6, the gear 33 meshes with a pinion 35 fixed to a shaft 34 rotatably supported by the rear wall 1B, and a timing pulley 36 fixed to the shaft 34. The timing belt 38 is wound around the timing pulley 37 fixed to the shaft 16.

Therefore, the second sample piece attaching member 5 and the adhesive transfer segment 17 always rotate in synchronization with each other, and the glued position of the second sample piece 8 is not displaced with respect to the adhesive transfer segment 17.

A motor 39 for rotationally driving the shaft 19 rotatably supported by the front wall 1A and the rear wall 1B with the adhesive stirring roll 20 fixed to the tip thereof rotates in synchronization with the main motor 24. When 5 is rotated by the main motor 24, the adhesive stirring roll 20 also rotates in synchronization with this, but when it is rotated by the measuring motor 29, the adhesive stirring roll 20 stops.

The crimping motor 4 arranged on the left side in FIG.
0 swings the lever 14, and the swing range of the lever 14 is limited by a limit switch operated by a cam (not shown).

The operation of the measuring unit by the power transmission mechanism configured as described above will be described.

As shown in FIG. 2, the first sample piece 3 is set on the fixture 4, the second sample piece 8 is set on the fixture 9, and the second sample piece attachment member 5 is at the base position.

The clutch 32 is disengaged and the clutch 28 is engaged.

Next, when the main motor 24 is rotated counterclockwise at the adhesive application speed, the adhesive transfer segment 17 is rotated clockwise.
The adhesive stirring rolls 20 rotate counterclockwise in synchronization with each other, and the adhesive in the adhesive container 21 moves to the adhesive stirring rolls 20.
A predetermined glue is applied at a predetermined speed to the adhesive application position of the second sample piece 8 through the adhesive transfer segment 17.

Then, the second sample piece mounting member 5 stops once at the point P,
After the adhesive application leaving time set arbitrarily beforehand, the second sample piece attachment member 5 again rotates at the same set speed and stops at the adhesion position Q.

If the coating speed is high, under certain conditions such as 1.5 m / sec or more, the stop positioning accuracy of the second sample piece mounting member 5 may vary greatly, and an angle error of 1 to 2 degrees or more may occur. It was

For this reason, the adhesive length changes, which causes an error in measuring the adhesive force.

Therefore, the present invention has a structure that reduces the moment of inertia of the drive system.

That is, the power system of the measurement motor 29 is isolated by the clutch 32, and the drive system of the adhesive stirring roll 20 is a separate system.

After the positioning is stopped at the bonding position Q, the pressure bonding motor 40 presses the pressure bonding member 12 against the first sample piece 3 and the second sample piece 8 under each condition of the bonding time, bonding temperature, and bonding pressure that are set in advance. Then bond them.

After completion of the adhesion, the clutch 28 is disengaged and the clutch 32 is engaged after rotating for a preset time arbitrarily set, the measurement motor 29 is rotated at the measurement speed, and the adhesion force at that time is measured by the tension detector 2. .

At this time, since the segment 17 must be in a position synchronized with the second sample piece mounting member 5, the segment 17 rotates as the second sample piece mounting member 5 rotates.

Thus, one cycle of automatic measurement by the adhesive force measuring device is completed.

〔effect〕

The power transmission mechanism of the adhesive force measuring device of the present invention comprises a separate power source for the second sample piece mounting member of the adhesive force measuring device, the adhesive stirring roll, and the crimping member for crimping the first sample piece and the second sample piece. By providing the transmission mechanism, the inertial mass of the power transmission mechanism of the second sample piece mounting member is reduced, and the positioning stop of the second sample piece mounting member is facilitated.

In addition, the power transmission mechanism of the second sample piece mounting member is provided with two clutches that are mutually intermeshed and reverse in operation, one main clutch is connected to the main motor with high positioning accuracy, and the other clutch has high torque. Since the measurement motor was connected, the positioning accuracy of the second sample piece mounting member was increased and the accuracy of the tensile test of the sample piece was improved.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a front view of a measuring device, and FIG. 2 is a power transmission system diagram of a power transmission mechanism. DESCRIPTION OF SYMBOLS 1 ... Machine frame, 2 ... Tensile tester, 3 ... 1st sample piece, 5 ... 2nd sample piece attachment member, 6 ... Rotating shaft, 8 ... 2nd sample piece, 12 ...
Crimping member, 16 ... Shaft, 17 ... Adhesive transfer segment, 2
0 ... Adhesive stirring roll, 24 ... Main motor, 28 ... Clutch, 29 ... Measuring motor, 32 ... Clutch, 39 ... Motor, 40 ... Crimping motor.

Claims (1)

[Scope of utility model registration request] 1. A second sample piece mounting member rotatably provided in proximity to a first sample piece mounted on a tensile force detector, wherein the second sample piece mounting member is rotated. The second sample piece glued by the adhesive transfer segment of the gluing member that rotates in synchronization with the first sample piece is stopped at a position close to the first sample piece and then adhered to the first sample piece, and the second sample piece is attached. An adhesive force measuring device in which the adhesive strength of an adhesive portion is measured by rotating a member, wherein a rotary shaft (6) fixedly provided with the second sample piece mounting member (5).
The shaft (26) is connected to the shaft via the clutch (28), and the gear (27) fixedly mounted on the shaft (26) is connected to the main motor (2).
The rotary shaft (6) is provided with a clutch (32) which meshes with a gear (25) fixed to the output shaft of 4) and which is disengaged or engaged when the clutch (28) is engaged or disengaged. , A gear (31) meshing with a pinion (30) fixed to the output shaft of the measurement motor (29) is fixed to the clutch (32), and the shaft (on which the adhesive transfer segment (17) is fixed ( 1
6) is connected to the shaft (34) via a timing belt,
The pinion (35) fixed to the shaft (34) is fixed to the rotating shaft (6), and the clutches (28) and (3) are fixed.
The gear (33) located between 2) is meshed, and the output shaft of the motor (39) driven synchronously with the main motor (24) is attached to the shaft (19) fixed with the adhesive stirring roll (20). A power transmission mechanism of an adhesive force measuring device characterized by being connected.