CN104406911A - Clamp device for 90-degree peeling tests of thin rubber film - Google Patents

Abstract

The invention discloses a fixture device for a 90-degree peeling test of film rubber, which includes a connecting frame, supporting feet and rollers. One end of the connecting frame is provided with a loading pin hole of a testing machine, and the end opposite to the pin hole is the bottom edge of the connecting frame. Both ends of the side are fixedly connected with supporting feet, and there is a plane parallel to the bottom edge of the connecting frame on the supporting feet, and a square groove is opened on the plane, and a roller is arranged in the square groove, and the roller is limited in the horizontal direction; the structure of the present invention is simple and It can always ensure that the peeling angle is vertical.

Description

Thin film rubber 90 degree peel test fixture device

technical field

The invention belongs to the technical field of adhesive interface mechanics research, in particular to a fixture device for a 90-degree peeling test of thin film rubber.

Background technique

With the continuous development of modern technology, bonding structures are more and more used in aerospace, vehicles, ships and other related equipment structures. Compared with traditional connection methods such as welding, threaded connection, and riveting, the use of adhesive structures can well avoid problems such as stress concentration and damage to adhered materials. The strength of the adhesive interface also directly determines the reliability of the overall structure. There are a large number of rubber films bonded to hard boards in engineering, so it is particularly important to study their interface bonding properties. The 90-degree peel test, as an important method to study the interface bonding performance, is widely used in the above research.

At present, the corresponding 90-degree peeling test standards have been formulated at home and abroad, and the standards point out that the rubber and the hard board should be kept vertical at 90 degrees during the test process. However, when the 90-degree peel test is carried out using a common tensile testing machine, after the hard plate and the rubber tensile clamping end are fixed, it is difficult to ensure that the two are always perpendicular as the peeling surface continues to develop. The foreign patent "DEVICE FOR PEEL TEST" provides a fixture design for a 90-degree peeling test piece, but the structure is relatively complicated, and certain structural improvements are required for the testing machine, which is not suitable for wide application.

Contents of the invention

The purpose of the present invention is to provide a thin film rubber 90-degree peeling test jig device which has a simple structure and can always ensure that the peeling angle is vertical.

The technical solution that realizes the object of the present invention is:

A film rubber 90-degree peeling test fixture device, including a connecting frame, supporting feet and rollers, one end of the connecting frame has a loading pin hole for the testing machine, and the end opposite to the pin hole is the bottom edge of the connecting frame, and the two ends of the bottom edge are fixed Connected with supporting feet, there is a plane parallel to the bottom edge of the connecting frame on the supporting feet, a square groove is arranged on the plane, and rollers are arranged in the square grooves, and the rollers are limited in the horizontal direction.

Compared with the prior art, the present invention has significant advantages:

(1) The present invention enables it to be applied to a tensile testing machine through an ingenious design of the fixture structure, and satisfies the vertical angle requirement in the 90-degree peeling test process.

(2) The design of the present invention takes into account issues such as the assembly of the fixture and the testing machine, the rigidity and stability of the fixture, and the limit of the clamped test piece, ensuring the reliability and practicability of the whole set of devices.

(3) The present invention is convenient to manufacture and assemble, has low cost, and is suitable for production and application.

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural view of the film rubber 90-degree peel test fixture device of the present invention.

Fig. 2 is a schematic view of the use of the film rubber 90-degree peel test fixture device of the present invention.

Fig. 3 is an exploded view of the film rubber 90-degree peel test fixture device of the present invention.

Detailed ways

Combined with Figure 1 to Figure 3:

The present invention is a film rubber 90-degree peeling test fixture device, comprising a connecting frame 1, a supporting leg 2 and a roller 3, one end of the connecting frame 1 has a loading pin hole of the testing machine, and the end opposite to the pin hole is the bottom of the connecting frame 1 The two ends of the side and the bottom are fixedly connected with supporting legs 2, and there is a plane parallel to the bottom of the connecting frame 1 on the supporting legs 2, and a square groove is opened on the plane, and a roller 3 is arranged in the square groove, and the roller 3 is horizontally positioned. limit.

The connecting frame 1 is a triangle, one corner of the triangle has a testing machine loading pin hole, and the two ends of the side opposite to the pin hole are fixedly connected with supporting legs 2 .

The supporting legs 2 are fixed on the two ends of the bottom edge of the connecting frame 1 by bolts.

There is a long groove on the plane on the supporting foot 2, and a square groove is arranged in the long groove, and a roller 3 is arranged in the square groove.

Example 1:

A 90-degree peeling test fixture device for film rubber, including a connecting frame 1, supporting feet 2 and rollers 3, the connecting frame 1 is a square, and a testing machine loading pin hole is opened at the midpoint of one side of the square, and a pin shaft hole is opened Both ends of the opposite side are fixedly connected with supporting feet 2, and there is a plane parallel to the bottom edge of the connecting frame 1 on the supporting feet 2, and a long groove is opened on the plane, and a square groove is opened in the long groove, and a roller 3 is arranged in the square groove .

Example 2:

A fixture device for 90-degree peeling test of film rubber, including a connecting frame 1, supporting feet 2 and rollers 3, the connecting frame 1 is a triangle, one corner of the triangle is opened with a testing machine loading pin hole, and the two ends of the side opposite to the pin hole are fixed Connected with supporting legs 2, there is a plane parallel to the bottom edge of the connecting frame 1 on the supporting legs 2, a square groove is arranged on the plane, and a roller 3 is arranged in the square groove, and the roller 3 is limited in the horizontal direction.

Its working principle is: before the test, the fixture is connected to the testing machine through the pin hole on the connecting frame 1, and the flat part of the hard plate of the test piece 4 is peeled off at 90 degrees and placed flat on the roller, and the film tensile loading direction is vertical, and Through the center of the pin hole of the connecting frame 1. After the peeling test starts, when the interface strength reaches the peeling strength, the peeling surface begins to expand, and the stretching direction of the film deviates from the initial vertical direction. At this time, the horizontal component of the stretching tension of the film acts on the flat part of the hard board. The flat part of the plate will roll on the roller 3, adjust the position until it is free from horizontal component force. Based on the above principles, the position of the 90-degree peeling test piece 4 will be adjusted at any time during the whole test process to ensure that the peeling angle is always vertical.

Claims (5)

1. a hull rubber 90 degree of stripping test clamp devices, it is characterized in that: comprise link (1), support leg (2) and roller (3), one end of link (1) has testing machine and loads pin-and-hole, one end relative with pin-and-hole is the base of link (1), two ends, base are fixedly connected with and support leg (2), support on leg (2) and have the plane parallel with link (1) base, plane has square groove, be provided with roller (3) in square groove, roller (3) is limited in the horizontal direction.

2. hull rubber according to claim 1 90 degree of stripping test clamp devices, it is characterized in that: described link (1) is triangle, leg-of-mutton one jiao has testing machine loading pin-and-hole, and the two ends on the limit relative with pin-and-hole are fixedly connected with and support leg (2).

3. hull rubber according to claim 1 and 2 90 degree of stripping test clamp devices, is characterized in that: described support leg (2) is bolted on the two ends on link (1) base.

4. hull rubber according to claim 1 and 2 90 degree of stripping test clamp devices, is characterized in that: the plane on described support leg (2) has elongated slot, has square groove in elongated slot, be provided with roller (3) in square groove.

5. hull rubber according to claim 3 90 degree of stripping test clamp devices, is characterized in that: the plane on described support leg (2) has elongated slot, has square groove in elongated slot, be provided with roller (3) in square groove.