JPH0121893B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for measuring the adhesion of rubber or rubber-like elastic sheets or paint-like substances such as adhesive tapes and inks.

BACKGROUND OF THE INVENTION This type of adhesive force measuring device is carried out by pressing samples together under a light load and measuring the force required to peel them off.

As such a pressure-peel type adhesive force measurement device,
This is a so-called pick-up type method in which the adhesive strength is measured by bringing a metal disk wrapped around the upper sample into contact with the lower sample of the sheet material under a predetermined load, moving the metal disk, and measuring the force that separates both samples. A device is known (Japanese Patent Publication No. 31-4890).

Problems to be Solved by the Invention However, in the device, the stopper for attaching the metal disk to the support cannot be easily inserted and removed, and the metal disk rotates the head of the stopper. It is not something that can be rotated. As a result, in the case of the above-mentioned apparatus, it is difficult and time-consuming to attach and detach the metal disk to the support in order to exchange the upper sample with another one, resulting in poor measurement efficiency and poor measurement accuracy. It is also a cause of Furthermore, in order to rotate one upper sample and measure at multiple locations, it is necessary to rotate the metal disk itself by hand, so the hand may touch the upper sample and affect the measurement results.

Therefore, it is an object of the present invention to provide an adhesive force measuring device that can attach and detach a metal disk to a support with a single touch, rotate the metal disk without touching the upper sample, and significantly improve measurement efficiency and accuracy. purpose.

Means for Solving the Problems In order to solve the above-mentioned problems, the metal disk according to the present invention is provided with a stop pin that can be freely inserted and removed while being held on both sides by the support body via a pair of receiving pieces. Therefore, the stop pin is attached to the support, and the stop pin has a head provided at the base end and a circular shape extending from the head and rotatably passing through one end wall of the support and one receiving piece. It consists of a shaft part and a flat part provided at the tip of the circular shaft part and fitted into a hole formed in the center of the metal disc.

Function In the technical means described above, the stop pin is
It functions so that the metal disk can be attached to and removed from the support body with a single touch, and also functions to reliably rotate the metal disk through the flat part only by rotating the head.

Embodiments Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In FIG. 1, reference numeral 1 denotes a cubical outer frame, on the lower end of which a sample holder 2 for a lower sample S is fixed, and inside accommodates the main body of the measuring device shown in FIG. The lower sample S is placed on the stand 3. The front side of the outer frame 1 is an operation surface, and this operation surface includes a push button switch 4 with an indicator light that lights up while the power is on, an indicator light 5 that lights up when crimping, and a peeling button. a push button switch 7 for starting the test, a push button switch 8 for stopping the test, a speed adjustment knob 9 for setting the rotation speed of the servo motor 18 (to be described later), and an indicator 1 for adhesive strength.
0. A timer display 11 for setting the crimping time and the like are provided.

The displays 10 and 11 may be analog displays such as meters using scale plates, but it is preferable to use digital displays such as numeric displays because they can be easily read.

As shown in FIG.
5, and is fixed at a predetermined distance in the vertical direction, and is entirely supported by four legs 16 attached to a lower fixing plate 13. The rotating shaft 17 is a threaded rod with a square thread formed over almost its entire length, and its lower end is directly connected to the rotating shaft of a servo motor 18 fixed to the upper surface of the lower fixed plate 13, and its upper end is connected to the upper fixed plate 12. Rotatably connected.

A rotating shaft 17 is provided between the fixed plates 12 and 13.
A movable body 20 through which fixed shafts 14 and 15 pass is provided. The hole in the movable body 20 through which the rotary shaft 17 passes is a female screw threaded into the rotary shaft 17, and when the rotary shaft 17 is rotated by the servo motor 18, the movable body 20 moves in the vertical direction.

A tension-compression type spring gauge 21 is fixed to the lower surface of the movable body 20, and the upper part of a load shaft 22 is fixed to the spring tension 21. Metal disc 2 to which
A support body 24 is fixed to the support member 3 supported through a stop pin 25. As the movable body 20 moves up and down, the load shaft 22 and the support body 2 are connected via the spring gauge 21.
4. The disk 23 is moved up and down, and the spring gauge 21 receives a tensile load when the movable body 20 moves up, and receives a compressive load when the movable body 20 moves down.

As shown in FIG. 3, the stop pin 25 includes a head 25c provided at the base end, a circular shaft 25b extending from the head 25c, and a circular shaft 25b provided at the tip of the circular shaft 25b. The flat portion 25a has a shape obtained by cutting off the top and bottom of the shaft portion 25b. Receiving pieces 28, 28' are fixed to both side walls 27, 27' of the support body 24. Receiving holes 29, 29' having approximately the same diameter as the circular shaft portion 25b are formed in both receiving pieces 28, 28'. A hole 30 having the same shape as the flat part 25a is formed in the center of the metal disc 23.
Therefore, the metal disc 23 is placed between the receiving pieces 28, 28'.
The stop pin 25 is inserted from the left side in FIG. The metal disk 23 is attached to the support body 24 by fitting the portion 25a into the hole 30. Also, if you pull out the stop pin 25, the metal disc 2
3 falls. In this way, the metal disk 23 has 1
It is attached to the support body 24 by a removable pin 25 with both sides being fixed to the support body 24 via a pair of receiving pieces 28, 28', and by simply inserting and removing the retaining pin 25. metal disc 2
3 can be attached and detached, so replacing the upper sample is extremely easy and can be done in a short time.

The metal disk 23 around which the upper sample (S') is wound is slightly rotated for each adhesive force measurement, and measurements are performed 4 to 5 times in one rotation. This rotation operation can be performed by holding the head 25c of the stop pin 25 and manually rotating the stop pin 25. Rotation of the metal disk 23 during measurement is prevented by the frictional force between the stop pin 25 and the receiving holes 29, 29'. To prevent rotation more reliably, radial grooves are cut in the side surface of the metal disk 23, and a plurality of dot-shaped protrusions are formed on the inner surfaces of the receiving pieces 28, 28'. It is also possible to make a concave and convex engagement. In this case, if the side walls 27, 27' of the support body 24 are made to have elasticity, when the head 25c is held and manually rotated, the side walls 27, 27',
27' is opened slightly laterally, the engagement of the concave and convex portions is released, and the metal disc 23 is allowed to rotate.

Effects of the Invention As described above, in the device according to the present invention, since the metal disk is attached to the support body by the stop pin that can be freely inserted and removed, the metal disk can be supported with one touch only by operating the stop pin. Since it can be attached to and removed from the body, replacing the upper sample is easy and can be done in a short time.
Further, since the stop pin can rotate the metal disk via the flat part only by rotating the head, the stop pin does not touch the upper sample and affect the measurement results. As a result, the present invention significantly improves measurement efficiency and measurement accuracy.

[Brief explanation of drawings]

Figure 1 is a front view of the entire adhesive force measuring device, Figure 2 is a perspective view of the internal mechanism of the same as above, Figure 3 A and B are side and front views of the stop pin, and Figure 4 is the main part of the present invention. FIG. 5 is a partially cutaway side view of the same. 23: metal disk, 24: support body, 25: stop pin, 25a: flat part, 25b: circular shaft part, 25
c: head, 27: side wall, 28: receiving piece, 30:
Hole, S: lower sample, S′: upper sample.

Claims (1)

[Claims] 1. After pressing the upper sample S' wound around the metal disk 23 attached to the support 24 to the lower sample S, the upper sample S' is pulled up and both samples S, S' In a pick-up type adhesive force measuring device for measuring the pressure bonding and peeling force between
It is attached to the support body 24 by a stop pin 25 that can be freely inserted and removed, with both sides being held by the support body 24 via the pins 8', and the stop pin 25 has a head provided at the base end. Part 25c
a circular shaft portion 25b extending from the head 25c and rotatably penetrating one side wall 27 and one receiving piece 28 of the support body 24; and the metal disc provided at the tip of the circular shaft portion 25b. An adhesive force measuring device comprising a flat portion 25a that fits into a hole 30 formed at the center of the adhesive force measuring device 23.