CN214622252U

CN214622252U - Clamp for composite material adhesive bonding and stripping test

Info

Publication number: CN214622252U
Application number: CN202120536592.4U
Authority: CN
Inventors: 冯霞; 杜量; 杨丽; 丁丽; 郑双; 王�锋; 杨康; 周国庆; 崔庆康
Original assignee: Liaoning Ruixiang General Aviation Co ltd; LIAONING GENERAL AVIATION ACADEMY
Current assignee: Liaoning Ruixiang General Aviation Co ltd; LIAONING GENERAL AVIATION ACADEMY
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-11-05
Anticipated expiration: 2031-03-15

Abstract

The utility model discloses a combined material splices and peels off anchor clamps for experiment, include: main body frame, angle regulation structure, decide the gyro wheel and move the gyro wheel, wherein, main body frame include the right angle frame and with the convex frame that the right angle frame is connected, angle regulation structure install in main body frame's one side, one end rotate through first pivot connect in on the right angle frame, the other end can wind convex frame rotates and can be rather than fixed, first pivot with the centre of a circle position coincidence that convex frame corresponds, decide the gyro wheel fixed set up in main body frame's opposite side and with the coaxial setting of first pivot, move the gyro wheel rotate set up in with angle regulation structure fixed connection's second is in the pivot. The composite material splicing and stripping test fixture is reasonable in structure and convenient to adjust, and can assist a testing machine in simulating a stripping test of a spliced part at different angles.

Description

Clamp for composite material adhesive bonding and stripping test

Technical Field

The utility model relates to a combined material splices the performance and detects and research field, provides a combined material splices peeling off anchor clamps for the experiment very much, installs and uses on the testing machine.

Background

The composite material has the characteristics of high strength/density, high elastic modulus/density, good damping and shock absorption, good designability, good environmental and weather resistance, good fatigue resistance, high material structure consistency, low thermal expansion coefficient, high breakage safety and the like, and obtains continuous and wide attention and use in the fields of military industry, national defense, aerospace and the like. The use of composite materials is continuously increasing year by year, especially during the design, production and manufacture of military and civil aircraft over the last few years.

The adhesive bonding is one of the main connecting modes of the composite material parts, more than two composite material parts are bonded into an integral part through the adhesive film material, and the performance of the whole part is directly influenced by the quality of the adhesive bonding.

The peeling test is a common detection mode for the gluing quality, and detection modes such as floating roller peeling, 180-degree peeling, 90-degree peeling and the like are often adopted to detect the gluing performance, however, because the glued composite material part can be subjected to loads in different directions in different working environments, the traditional peeling test method cannot reflect the gluing performance of the glued part in the actual working environment.

Therefore, a novel composite material bonding and peeling test fixture is provided, which can be matched with a testing machine to simulate bonding and peeling tests at different angles, and the problem to be solved is urgently solved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a combined material splices and peels off anchor clamps for experiment to solve current splicing and peel off that the anchor clamps for experiment can't reflect the performance of splicing of parts in actual work environment, promptly: the problem of the adhesive bonding stripping test at different angles cannot be simulated in an auxiliary manner.

The utility model provides a technical scheme is: the experimental anchor clamps of using of combined material glued joint peeling off includes: the angle adjusting mechanism comprises a main body frame, an angle adjusting structure, a fixed roller and a movable roller, wherein the main body frame comprises a right-angle frame and an arc-shaped frame connected with the right-angle frame, the whole main body frame is in a quarter-circle shape, the middle part of the main body frame is a hollow area, the arc-shaped frame is provided with angle scales, the angle adjusting structure is installed on one side of the main body frame, one end of the angle adjusting structure is rotatably connected onto the right-angle frame through a first rotating shaft, the other end of the angle adjusting structure can rotate around the arc-shaped frame and can be fixed with the arc-shaped frame, the first rotating shaft is coincided with the circle center position corresponding to the arc-shaped frame, the fixed roller is fixedly arranged on the other side of the main body frame and is coaxial with the first rotating shaft, the movable roller is rotatably arranged on a second rotating shaft, and the second rotating shaft penetrates through the hollow area of the main body frame and is fixedly connected with the angle adjusting structure, the movable roller and the fixed roller are used for supporting a sample to be tested and placed above the movable roller and the fixed roller.

Preferably, the angle adjusting structure includes strip shaped plate and mounting plate, wherein, the mounting plate connect in the one end of strip shaped plate, inboard with the periphery cooperation of convex frame is provided with the screw thread through-hole on it, through with the fixed of angle adjusting structure can be realized to screw thread through-hole complex bolt.

Preferably, the strip-shaped plate is provided with a strip-shaped hole, the strip-shaped hole and the first rotating shaft are located on the same straight line, and the second rotating shaft is locked through a bolt penetrating through the strip-shaped hole.

Further preferably, the fastening plate is provided with pointer marks matched with the angle scales on the circular arc-shaped frame.

Preferably, the first rotating shaft penetrates through the right-angle frame, an internal thread is arranged at the free end of the first rotating shaft, and the fixed roller is sleeved on the first rotating shaft in a matched mode and is fastened through a bolt matched with the internal thread of the first rotating shaft.

Further preferably, the clamp for the composite material glue joint stripping test further comprises a limiting structure, wherein the limiting structure is used for limiting a sample to be tested and preventing the sample from moving along the axial direction of the first rotating shaft or the second rotating shaft and falling off in the testing process.

Preferably, the free end of the second rotating shaft is provided with an internal thread, the limiting structure comprises a first connecting rod and a second connecting rod which are vertically connected, the first connecting rod is screwed on the free end of the second rotating shaft through a bolt, and the second connecting rod is sleeved with a roller and is pressed on the upper surface of the sample to be tested.

Further preferably, the top of the main body frame is further provided with a connecting beam for connecting with an upper chuck of the testing machine.

Further preferably, the anchor clamps for the combined material splice stripping test still include the last chuck that can be connected with the crossbeam of testing machine and the lower chuck that can be connected with the pedestal of testing machine, go up the chuck with the tie-beam passes through the detachable connection of locating pin, the chuck interval set up in main body frame's lower part and with go up the coaxial setting of chuck, down the chuck include the base and with the base passes through the split type clamp splice that the locating pin is connected.

Further preferably, the positioning pin comprises a first square rod, and a second square rod and a third square rod hinged to two ends of the first square rod.

The utility model provides a combined material splices peeling test and uses anchor clamps, rational in infrastructure, it is convenient to adjust, but the auxiliary testing machine simulation splices the peeling test of part under different angles.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and embodiments:

FIG. 1 is a schematic structural view of a composite material splicing and stripping test fixture provided by the present invention;

FIG. 2 is an exploded view of the composite material splicing and peeling test fixture provided by the present invention;

FIG. 3 is a 90-degree peel test chart of the composite material bonding and peeling test fixture provided by the present invention;

FIG. 4 is another perspective view of the jig for the composite material adhesion and peeling test of FIG. 3;

FIG. 5 is a 120-degree peeling test chart of the composite material bonding and peeling test fixture provided by the present invention;

FIG. 6 is an exploded view of the upper cartridge;

FIG. 7 is an exploded view of the lower chuck;

fig. 8 is a schematic structural view of a positioning pin.

Detailed Description

The invention will be further explained below with reference to specific embodiments, without limiting the invention.

As shown in fig. 1 to 5, the utility model provides a composite material splices and peels off anchor clamps for experiment, include: the angle adjusting device comprises a main body frame 1, an angle adjusting structure 2, a fixed roller 3 and a movable roller 4, wherein the main body frame 1 comprises a right-angle frame 11 and a circular arc-shaped frame 12 connected with the right-angle frame 11, the main body frame 1 is integrally in a quarter-circle shape, the middle part of the main body frame is a hollow area, angle scales are arranged on the circular arc-shaped frame 12, the angle adjusting structure 2 is installed on one side of the main body frame 1, one end of the angle adjusting structure is rotatably connected to the right-angle frame 11 through a first rotating shaft 31, the other end of the angle adjusting structure can rotate around the circular arc-shaped frame 12 and can be fixed with the circular arc-shaped frame, the first rotating shaft 31 coincides with the circle center position corresponding to the circular arc-shaped frame 12, the fixed roller 3 is fixedly arranged on the other side of the main body frame 1 and is coaxial with the first rotating shaft 31, the movable roller 4 is rotatably arranged on a second rotating shaft 41, and the second rotating shaft 41 penetrates through the hollow area of the main body frame 1 and is fixedly connected with the angle adjusting structure 2, the movable roller 4 and the fixed roller 3 are used for supporting a test sample 10 to be tested which is placed above the movable roller and the fixed roller.

The use method of the clamp for the composite material adhesive bonding stripping test comprises the following steps: when a peeling test is to be carried out, firstly, the angle adjusting structure is adjusted, the angle adjusting structure is fixed after the angle adjusting structure reaches a specified angle, then, the clamp is fixed on an upper chuck of a testing machine, a sample to be tested is arranged above the fixed roller and the movable roller in a spanning mode, the end part, which is not glued to the flexible adherend, of the sample is clamped into a lower chuck of the testing machine, then, the upper chuck and the lower chuck are separated through the testing machine according to the different load directions of the glued part in different working environments, and the peeling test under different angles is simulated.

As an improvement of the technical solution, as shown in fig. 2, the angle adjusting structure 2 includes a strip-shaped plate 21 and a fastening plate 22, wherein the fastening plate 22 is connected to one end of the strip-shaped plate 21, the inner side of the fastening plate is matched with the outer periphery of the circular arc-shaped frame 12, a threaded through hole is formed in the fastening plate, and the angle adjusting structure 2 can be fixed by a bolt matched with the threaded through hole.

As an improvement of the technical solution, as shown in fig. 2, a strip-shaped hole 211 is formed in the strip-shaped plate 21, the strip-shaped hole 211 and the first rotating shaft 31 are located on the same straight line, and the second rotating shaft 41 is locked by a bolt passing through the strip-shaped hole 211. Through adjusting the position of second pivot on bar hole length direction, can adjust the distance of fixed gyro wheel and movable roller, and then can prevent that the sample is whole takes place bending deformation in peeling off the test, in addition, when sample length is shorter, can guarantee experimental smooth going on through the distance of reducing fixed gyro wheel and movable roller.

As an improvement of the technical solution, as shown in fig. 1 to 3 and 5, a pointer mark matched with the angle scale on the arc-shaped frame 12 is provided on the fastening plate 22, and the peeling angle can be accurately adjusted by the pointer mark, preferably, the angle scale range provided on the arc-shaped frame is 90 degrees to 180 degrees, wherein, as shown in fig. 1 and 3, when the pointer mark indicates 90 degrees, the separation direction of the sample to be tested arranged above the fixed roller and the movable roller and the upper and lower chucks of the testing machine is vertically arranged, further preferably, the connecting line of the centers of the first rotating shaft and the second rotating shaft and the pointer mark are on a straight line, and the sample is always parallel to the straight line in the testing process.

As a modification of the technical solution, as shown in fig. 2, the first rotating shaft 31 passes through the right-angle frame 11, and a free end is provided with an internal thread, and the fixed roller 3 is fittingly sleeved on the first rotating shaft 31 and fastened by a bolt fitted with the internal thread of the first rotating shaft 31.

As an improvement of the technical solution, as shown in fig. 1 to 5, the fixture for the composite material adhesive bonding and peeling test further includes a limiting structure 5 for limiting the sample to be tested and preventing the sample to be tested from moving along the axial direction of the first rotating shaft 31 or the second rotating shaft 41 and falling off during the test process.

As an improvement of the technical solution, as shown in fig. 2, the free end of the second rotating shaft 41 is provided with an internal thread, the limiting structure 5 includes a first connecting rod 51 and a second connecting rod (not shown in the figure) which are vertically connected, the first connecting rod 51 is screwed on the free end of the second rotating shaft 41 through a bolt, the second connecting rod is sleeved with a roller 52 and is pressed on the upper surface of the sample 10 to be tested, and preferably, a gasket 9 is provided between the first connecting rod and the second rotating shaft 41.

As a technical improvement, as shown in fig. 1, a connecting beam 13 is further provided at the top of the main body frame 1 for connecting with an upper chuck of the testing machine.

As an improvement of the technical solution, as shown in fig. 3 to 5, the composite material adhesive bonding and stripping test fixture further includes an upper chuck 6 connectable to a cross beam of the testing machine and a lower chuck 7 connectable to a base of the testing machine, the upper chuck 6 is detachably connected to the connection beam 13 through a positioning pin 8, the lower chucks 7 are disposed at intervals on the lower portion of the main body frame 1 and are coaxially disposed with the upper chuck 6, and the lower chucks 7 include a base 71 and a split type clamping block 72 connected to the base 71 through the positioning pin 8.

Specifically, as shown in fig. 6, the upper chuck 6 includes a top mounting seat 61, a first upper chuck main body 62 and a second upper chuck main body 63, the lower portion of the top mounting seat 61 is fixedly connected with a slot 611, the first upper chuck main body 62 and the second upper chuck main body 63 have the same structure, the upper portion is correspondingly provided with a semicircular connecting column matched with the slot 611, the lower portion is correspondingly provided with a clamping block connected with the semicircular connecting column, the inner side of the clamping block is correspondingly provided with a square groove matched with the connecting beam 13, after the first upper chuck main body 62 and the second upper chuck main body 63 are butted, the upper portion is connected with the top mounting seat 61 through a positioning pin 8, and the lower portion is connected with the connecting beam 13 through a positioning pin 8; as shown in fig. 7, a socket is provided on the base 71 of the lower chuck, the split clamping blocks have the same structure, and after abutting and clamping the non-glued end of the flexible adherend, the split clamping blocks can be inserted into the socket in a matching manner and locked by the positioning pin 8.

As an improvement of the technical solution, as shown in fig. 8, the positioning pin 8 includes a first square rod 81, and a second square rod 82 and a third square rod 83 hinged to two ends of the first square rod 81, when the positioning pin is used for locking, one of the first square rod and the second square rod or the third square rod is firstly made to be in a straight line, and after the first square rod and the second square rod or the third square rod are inserted into the positioning hole in a matching manner and are installed in place, the second square rod and the third square rod are rotated to be perpendicular to the first square rod to prevent the positioning pin from falling off in the test process, preferably, two ends of the positioning pin are round heads so as to be inserted into the positioning hole.

The embodiments of the present invention are written in a progressive manner, emphasizing the differences of the various embodiments, and similar parts can be referred to each other.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The experimental anchor clamps of using of combined material glued joint peeling off, its characterized in that includes: the angle adjusting mechanism comprises a main body frame (1), an angle adjusting structure (2), a fixed roller (3) and a movable roller (4), wherein the main body frame (1) comprises a right-angle frame (11) and a circular arc frame (12) connected with the right-angle frame (11), the main body frame (1) is integrally in a quarter circular shape, the middle part of the main body frame is a hollow area, angle scales are arranged on the circular arc frame (12), the angle adjusting structure (2) is installed on one side of the main body frame (1), one end of the angle adjusting structure is rotatably connected onto the right-angle frame (11) through a first rotating shaft (31), the other end of the angle adjusting structure can rotate around the circular arc frame (12) and can be fixed with the circular arc frame, the first rotating shaft (31) coincides with the circle center position corresponding to the circular arc frame (12), the fixed roller (3) is fixedly arranged on the other side of the main body frame (1) and is coaxial with the first rotating shaft (31), the movable roller (4) is rotatably arranged on a second rotating shaft (41), the second rotating shaft (41) penetrates through the hollow area of the main body frame (1) and is fixedly connected with the angle adjusting structure (2), and the movable roller (4) and the fixed roller (3) are used for supporting a test sample (10) to be tested and placed above the movable roller and the fixed roller.

2. The jig for the composite material adhesive bonding peeling test according to claim 1, wherein: the angle adjusting structure (2) comprises a strip-shaped plate (21) and a fastening plate (22), wherein the fastening plate (22) is connected to one end of the strip-shaped plate (21), the inner side of the fastening plate is matched with the periphery of the circular arc-shaped frame (12), a threaded through hole is formed in the fastening plate, and the angle adjusting structure (2) can be fixed through a bolt matched with the threaded through hole.

3. The jig for the composite material adhesive bonding peeling test according to claim 2, wherein: be provided with strip hole (211) on strip shaped plate (21), strip hole (211) with first pivot (31) are located a straight line, second pivot (41) are through passing the bolt locking in strip hole (211).

4. The jig for the composite material adhesive bonding peeling test according to claim 2, wherein: and pointer marks matched with the angle scales on the circular arc-shaped frame (12) are arranged on the fastening plate (22).

5. The jig for the composite material adhesive bonding peeling test according to claim 1, wherein: the first rotating shaft (31) penetrates through the right-angle frame (11), an internal thread is arranged at the free end of the first rotating shaft, and the fixed roller (3) is sleeved on the first rotating shaft (31) in a matched mode and is fastened through a bolt matched with the internal thread of the first rotating shaft (31).

6. The jig for the composite material adhesive bonding peeling test according to claim 1, wherein: the test device also comprises a limiting structure (5) for limiting the test sample to be tested and preventing the test sample from moving along the axial direction of the first rotating shaft (31) or the second rotating shaft (41) and falling off in the test process.

7. The jig for the composite material adhesive bonding peeling test according to claim 6, wherein: the free end of second pivot (41) is provided with the internal thread, limit structure (5) are including first connecting rod (51) and the second connecting rod of perpendicular connection, first connecting rod (51) through the bolt tighten in the free end of second pivot (41), overlap on the second connecting rod and establish a gyro wheel (52), compress tightly in the upper surface of the sample (10) of awaiting measuring.

8. The jig for the composite material adhesive bonding peeling test according to claim 1, wherein: the top of the main body frame (1) is also provided with a connecting beam (13) for connecting with an upper chuck of the testing machine.

9. The jig for composite material adhesive bonding and peeling test as set forth in claim 8, wherein: still include last chuck (6) that can be connected with the crossbeam of testing machine and lower chuck (7) that can be connected with the pedestal of testing machine, go up chuck (6) with tie-beam (13) are through locating pin (8) detachable connection, lower chuck (7) interval set up in the lower part of main body frame (1) and with go up chuck (6) coaxial arrangement, lower chuck (7) include base (71) and with split type clamp splice (72) that base (71) are connected through locating pin (8).

10. The jig for composite material adhesive bonding and peeling test as set forth in claim 9, wherein: the positioning pin (8) comprises a first square rod (81), and a second square rod (82) and a third square rod (83) which are hinged to two ends of the first square rod (81).