Tool for testing shearing force of retaining ring rubber layer

Abstract

The invention provides a retaining ring adhesive layer shearing force testing tool, and relates to the technical field of adhesive layer shearing force testing, the retaining ring adhesive layer shearing force testing tool comprises a base, a mechanical tensile testing machine is installed above the base, and a tensile machine upper beam and a tensile machine lower beam are installed in the mechanical tensile testing machine; the tensile machine upper beam and the tensile machine lower beam are both externally provided with fixing seats, the outer surfaces of the fixing seats are fixedly provided with wedge block connecting blocks, and through cooperation of sample block fixing blocks, retaining ring sample blocks and clamping wedge blocks, the tensile machine upper beam can move upwards at a constant speed after the mechanical tensile testing machine is started. At the moment, tension can be applied to the protective ring sample block, the maximum tension when the adhesive layer of the retaining ring sample block is broken is the bonding stress of the adhesive layer of the retaining ring sample block, then multiple groups of data can be obtained by repeating the operation, the function of accurately measuring the shearing force of the adhesive layer of the retaining ring is realized, and the operation is simple.

Description

Technical Field

[0001] The invention relates to a testing tool, in particular to a testing tool for the shear force of a retaining ring adhesive layer, and belongs to the technical field of adhesive layer shear force testing. Background Art

[0002] A retaining ring is a component made by bonding metal and polymer materials with epoxy resin glue. The shear force of the epoxy resin glue layer is an important parameter of the retaining ring product. If the bonding force is too small, the polymer layer and the metal layer will separate during use, affecting the function of the retaining ring and causing safety accidents. Therefore, the corresponding glue layer shear force needs to be tested during the processing of the protective ring product.

[0003] The commonly used method for testing the shear force of the adhesive layer is to use mechanical equipment to perform a destructive pull-up experiment on the adhesive layer between metal materials. Due to the high strength of metal materials, the metal materials will not break during the measurement process, and their shear force is easy to measure. However, the shear force test of the adhesive layer of the retaining ring requires a destructive pull-up experiment on the adhesive layer between the metal material and the polymer material. During the mechanical pull-up experiment, the polymer material will fail and break, resulting in the inability to test the shear force of the adhesive layer between the metal material and the polymer material, making it difficult to accurately measure the stress shear force of the adhesive layer of the retaining ring, and the operation process is relatively cumbersome. For this reason, we provide a test tool for the shear force of the adhesive layer of the retaining ring to solve the above problems. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a test fixture for maintaining the shear force of the ring adhesive layer to solve the above problems. The specific technical solution is as follows: A test fixture for the shear force of a retaining ring adhesive layer comprises a base, a mechanical tensile testing machine is installed above the base, an upper beam and a lower beam of the tensile testing machine are respectively installed inside the mechanical tensile testing machine, a fixed seat is installed outside the upper beam and the lower beam of the tensile testing machine, a wedge block connecting block is fixedly installed on the outer surface of the fixed seat, a limiting groove is provided inside the wedge block connecting block, a clamping wedge is slidably connected inside the limiting groove, a sample block fixing block is slidably connected inside the clamping wedge, an installation groove is provided inside the sample block fixing block, and a retaining ring sample is slidably connected inside the installation groove.

[0005] Preferably, a tension calculation display is installed on the outside of the mechanical tensile testing machine, and a protective door is installed on the outside of the mechanical tensile testing machine.

[0006] Preferably, a positioning groove is provided inside the clamping wedge block, the interior of the positioning groove is slidably connected to a limit baffle, and the outer surface of the limit baffle is slidably connected to the outer surface of the wedge block connecting block.

[0007] Preferably, the internal thread of the wedge block connecting block is connected with a No. 1 fixing bolt, and the outer surface of the No. 1 fixing bolt is slidably connected to the inside of the limit baffle.

[0008] Preferably, a plurality of groups of limit plates are fixedly installed inside the clamping wedge block, and outer surfaces of the plurality of groups of limit plates are engaged with the interior of the sample block fixing block.

[0009] Preferably, the outer surface of the sample fixing block is slidably connected with a fixed pressure plate, the outer surface of the fixed pressure plate is slidably connected with the outer surface of the retaining ring sample, the interior of the fixed pressure plate is slidably connected with a No. 2 fixing bolt, and the outer surface of the No. 2 fixing bolt is threadedly connected with the internal thread of the sample fixing block.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The test fixture for the shear force of the retaining ring adhesive layer cooperates with the sample fixing block, the retaining ring sample and the clamping wedge block. When in use, the finished retaining ring is processed into a suitable rectangular retaining ring sample. At this time, the combination of the sample fixing fixture and the retaining ring sample is fixed inside the mechanical tensile testing machine. After starting the mechanical tensile testing machine, the upper beam of the tensile testing machine can move up at a constant speed. At this time, tension can be applied to the protective ring sample. The maximum tension when the adhesive layer of the retaining ring sample is broken is the bonding stress of the adhesive layer of the retaining ring sample. Then, by repeating the operation, multiple sets of data can be obtained, thereby realizing the function of accurately measuring the shear force of the retaining ring adhesive layer, and the operation is simple.

[0011] 2. The test fixture for the shear force of the retaining ring adhesive layer is equipped with components such as a fixed pressure plate and a limit baffle. When the clamping wedge is fixed, the clamping wedge is placed inside the limit groove. The limit groove is trapezoidal in shape. At this time, the limit groove can assist in fixing the clamping wedge. Then, the clamping wedge can be stably fixed by the cooperation of the No. 1 fixing bolt and the limit baffle. At this time, the clamping wedge can be stably limited inside the limit groove. The rectangular retaining ring sample can be fixed inside the installation groove by the fixed pressure plate and the No. 2 fixing bolt. The retaining ring sample can be stably limited by the installation groove and the fixed pressure plate, thereby ensuring the stability of the overall work during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the wedge block connecting block component of the present invention; Figure 3 For the present invention Figure 2 A partial enlarged view of the figure; Figure 4 It is a schematic diagram of the clamping wedge component of the present invention; Figure 5 It is a schematic diagram of the sample block fixing block component of the present invention.

[0013] Description of the drawings: 1. Base; 2. Mechanical tensile testing machine; 3. Upper beam of tensile testing machine; 4. Lower beam of tensile testing machine; 5. Fixed seat; 6. Wedge connecting block; 7. Limiting groove; 8. Clamping wedge; 9. Sample fixing block; 10. Mounting groove; 11. Retaining ring sample; 12. Tension calculation display; 13. Protective door; 14. Positioning groove; 15. Limit baffle; 16. No. 1 fixing bolt; 17. Limiting plate; 18. Fixed pressure plate; 19. No. 2 fixing bolt. DETAILED DESCRIPTION

[0014] The present invention will be further described with reference to the accompanying drawings.

[0015] See also Figure 1 - Figure 5 A test fixture for maintaining the shear force of a ring adhesive layer includes a base 1, a mechanical tensile testing machine 2 is installed on the top of the base 1, a tensile calculation display 12 is installed on the outside of the mechanical tensile testing machine 2, and the tensile calculation display 12 can display the corresponding data during the test, which is convenient for staff to view and record. A protective door 13 is installed on the outside of the mechanical tensile testing machine 2. The protective door 13 is composed of high-strengthened glass and can protect the interior of the mechanical tensile testing machine 2, ensuring the safety of external personnel during the test.

[0016] The interior of the mechanical tensile testing machine 2 is respectively installed with a tensile machine upper beam 3 and a tensile machine lower beam 4. The tensile machine lower beam 4 is fixed as a whole inside the mechanical tensile testing machine 2. The exterior of the tensile machine upper beam 3 is connected with a driving test structure that can monitor the corresponding tensile force in real time. The driving structure can control the movement of the tensile machine upper beam 3 and the distance between the tensile machine upper beam 3 and the tensile machine lower beam 4.

[0017] A fixed seat 5 is installed on the outside of the upper beam 3 and the lower beam 4 of the tensile testing machine. A wedge connecting block 6 is fixedly installed on the outer surface of the fixed seat 5. A limiting groove 7 is provided inside the wedge connecting block 6. The limiting groove 7 is trapezoidal in shape. A clamping wedge 8 is slidably connected inside the limiting groove 7. One end of the clamping wedge 8 corresponds to the shape of the limiting groove 7. When the clamping wedge 8 is placed inside the limiting groove 7, the up and down movement of the clamping wedge 8 can be limited.

[0018] A positioning groove 14 is provided inside the clamping wedge block 8, and a limit baffle 15 is slidably connected inside the positioning groove 14. The outer surface of the limit baffle 15 is slidably connected to the outer surface of the wedge block connecting block 6. The internal thread of the wedge block connecting block 6 is connected to a No. 1 fixing bolt 16, and the outer surface of the No. 1 fixing bolt 16 is slidably connected to the inside of the limit baffle 15. The limit baffle 15 can be fixed to the outside of the wedge block connecting block 6 by the No. 1 fixing bolt 16. At this time, the limit baffle 15 can enter the interior of the positioning groove 14, and the rotation of the limit baffle 15 can be limited by the positioning groove 14. When the No. 1 fixing bolt 16 is tightened, the limit baffle 15 can fix the position of the clamping wedge block 8.

[0019] The interior of the clamping wedge 8 is slidably connected to the sample fixing block 9, and multiple sets of limiting plates 17 are fixedly installed inside the clamping wedge 8. The outer surfaces of the multiple sets of limiting plates 17 are meshed with the interior of the sample fixing block 9. The interior of the sample fixing block is provided with multiple sets of gear teeth corresponding to the limiting plates 17. When the two are meshed with each other, the friction force during clamping is increased. After the sample fixing block 9 is installed inside the clamping wedge 8, the position of the sample fixing block can be auxiliary fixed by the limiting plates 17, thereby ensuring the stability of the fixation during use.

[0020] The sample fixing block 9 is provided with an installation groove 10, and a retaining ring sample block 11 is slidably connected inside the installation groove 10. The retaining ring sample block 11 needs to be processed into a rectangular parallelepiped during production. During processing, it is necessary to ensure that the glue layer is in the center of the sample block. The outer surface of the sample fixing block 9 is slidably connected with a fixed pressure plate 18. The outer surface of the fixed pressure plate 18 is slidably connected to the outer surface of the retaining ring sample block 11. The inner surface of the fixed pressure plate 18 is slidably connected with a No. 2 fixing bolt 19. The outer surface of the No. 2 fixing bolt 19 is threadedly connected to the inner surface of the sample fixing block 9 to hold the rectangular parallelepiped. After the ring sample 11 is placed inside the mounting groove 10, one end of the retaining ring sample 11 is fixed by the No. 2 fixing bolt 19 and the fixing pressure plate 18. At this time, the assembled combination of the sample fixing tooling and the protective ring sample is fixed, and fixed on the mechanical tensile testing machine 2 by clamping through the clamping wedge block 8. The mechanical tensile testing machine 2 is started, and the upper beam 3 of the tensile machine moves up at a constant speed to apply tension to the retaining ring sample 11. The retaining ring sample 11 stops moving after the glue layer is broken. The maximum tension value of this process is the bonding stress of the glue layer of the retaining ring sample 11.

[0021] The electrical equipment in this application is a common electrical equipment in the prior art. This application will not go into too much detail about its model or internal structure, and it can also be replaced by other power sources.

[0022] When the present invention is in use: during testing, the finished retaining ring is processed into a suitable rectangular retaining ring sample 11, and the glue layer must be ensured to be in the center of the sample. The retaining ring sample 11 is installed on the corresponding sample fixing block 9 through the No. 2 fixing bolt 19 and the fixed pressure plate 18, and the combination of the assembled sample fixing tooling and the retaining ring sample 11 is fixed on the mechanical tensile testing machine 2 in a clamping manner through the clamping wedge block 8. The mechanical tensile testing machine 2 is started, and the upper beam 3 of the tensile machine moves up at a constant speed, and a tensile force is applied to the retaining ring sample 11. The retaining ring sample 11 stops moving after the glue layer is broken. The maximum tensile force value of the process is the bonding stress of the glue layer of the retaining ring sample 11, and the test results are obtained. Then, the stretched retaining ring sample 11 is removed and the test is repeated.

[0023] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. A test fixture for the shear force of a retaining ring adhesive layer, comprising a base (1), characterized in that: A mechanical tensile testing machine (2) is installed above the base (1), and a tensile machine upper beam (3) and a tensile machine lower beam (4) are installed inside the mechanical tensile testing machine (2), respectively. A fixing seat (5) is installed outside the tensile machine upper beam (3) and the tensile machine lower beam (4), and a wedge block connecting block (6) is fixedly installed on the outer surface of the fixing seat (5). A limiting groove (7) is provided inside the wedge block connecting block (6), and a clamping wedge block (8) is slidably connected inside the limiting groove (7). A sample block fixing block (9) is slidably connected inside the clamping wedge block (8), and an installation groove (10) is provided inside the sample block fixing block (9), and a retaining ring sample block (11) is slidably connected inside the installation groove (10).

2. A test tool for the shear force of the retaining ring adhesive layer according to claim 1, characterized in that: A tension calculation display (12) is installed outside the mechanical tensile testing machine (2), and a protective door (13) is installed outside the mechanical tensile testing machine (2).

3. A test tool for the shear force of the retaining ring adhesive layer according to claim 1, characterized in that: A positioning groove (14) is provided inside the clamping wedge block (8), the interior of the positioning groove (14) is slidably connected to a limit baffle plate (15), and the outer surface of the limit baffle plate (15) is slidably connected to the outer surface of the wedge block connecting block (6).

4. A test tool for the shear force of the retaining ring adhesive layer according to claim 3, characterized in that: The wedge block connecting block (6) is internally threadedly connected to a No. 1 fixing bolt (16), and the outer surface of the No. 1 fixing bolt (16) is slidably connected to the interior of the limit baffle (15).

5. The test tool for shear force of the retaining ring adhesive layer according to claim 1, characterized in that: A plurality of groups of limit plates (17) are fixedly mounted inside the clamping wedge block (8), and the outer surfaces of the plurality of groups of limit plates (17) are meshed with the interior of the sample block fixing block (9).

6. A test tool for shear force of a retaining ring adhesive layer according to claim 1, characterized in that: The outer surface of the sample block fixing block (9) is slidably connected to a fixed pressure plate (18), and the outer surface of the fixed pressure plate (18) is slidably connected to the outer surface of the retaining ring sample block (11). The interior of the fixed pressure plate (18) is slidably connected to a second fixing bolt (19), and the outer surface of the second fixing bolt (19) is threadedly connected to the interior of the sample block fixing block (9).

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