Rubber tensile testing device

Abstract

The utility model provides a rubber tensile testing device which comprises a base, a fixed plate, a sliding plate, a plurality of fixed end clamping plates, a plurality of tensile end clamping plates and an adjusting mechanism, the fixed plate is fixedly installed on a fixed end installation plane of the base, the sliding plate is installed on a tensile end installation plane of the base in a sliding mode, and the fixed end clamping plates are arranged on the upper surface of the fixed plate in a stacked mode. Any two adjacent fixed end clamping plates are detachably connected, the fixed end clamping plate on the lowermost layer is detachably connected with the fixed plate, the multiple stretching end clamping plates are arranged on the upper surface of the sliding plate in a stacked mode, any two adjacent stretching end clamping plates are detachably connected, and the stretching end clamping plate on the lowermost layer is detachably connected with the sliding plate. The adjusting mechanism is used for driving the sliding plate to stretch the sample. A plurality of samples can be clamped at the same time by adopting a multi-layer structure, so that batch testing is realized; by adopting a detachable connecting structure, the test sample can be taken down layer by layer according to a test period for detection, and the performance indexes of different tensile time can be obtained in one test.

Description

Technical Field

[0001] This invention belongs to the field of rubber tensile testing technology, and more specifically, relates to a rubber tensile testing device. Background Technology

[0002] Rubber tensile testing is typically performed according to GB / T 528-2009. A dumbbell-shaped or ring-shaped standard specimen is stretched on a tensile testing machine with a moving clamp or pulley system that moves at a constant speed. The force and elongation required during continuous stretching and at break are recorded as required.

[0003] Existing testing equipment can only test one specimen at a time when performing rubber tensile tests, making it unsuitable for large-scale tensile testing. Furthermore, multiple tests are required to assess the performance indicators of rubber at different tensile times. Summary of the Invention

[0004] The purpose of this invention is to provide a rubber tensile testing device that solves the problem that existing testing devices cannot perform batch testing, and the problem that multiple tests are required when testing performance indicators for different tensile times.

[0005] To achieve the above objectives, the present invention provides a rubber tensile testing device, comprising:

[0006] The base has a fixed end mounting plane and a tension end mounting plane formed on its upper surface;

[0007] A fixed plate, the lower surface of which is fixedly mounted on the fixed end mounting plane of the base;

[0008] A sliding plate, the lower surface of which is slidably mounted on the tensile end mounting plane of the base, and the sliding plate is capable of sliding along the tensile direction of the sample;

[0009] Multiple fixed-end clamps are stacked on the upper surface of the fixed plate. Any two adjacent fixed-end clamps and the bottommost fixed-end clamp can be detachably connected and used to clamp the fixed end of the sample.

[0010] Multiple tensile end clamps are provided, and the multiple tensile end clamps are arranged in pairs with the multiple fixed end clamps. The multiple tensile end clamps are stacked on the upper surface of the slide plate. Any two adjacent tensile end clamps and the bottommost tensile end clamp and the slide plate can be detachably connected and used to clamp the tensile end of the sample.

[0011] An adjustment mechanism, connected to the slide plate, is used to drive the slide plate to slide and stretch the specimen.

[0012] Optionally, a boss is provided between the fixed end mounting plane and the tension end mounting plane. One side of the boss is used to limit the fixed plate in the tension direction, and the other side of the boss is used to limit the sliding plate in the opposite tension direction.

[0013] Optionally,

[0014] The base has a pair of guide surfaces at both ends that are parallel to the stretching direction;

[0015] The fixed plate is provided with a pair of downwardly extending first positioning blocks at both ends. The pair of first positioning blocks cooperate with the pair of guide surfaces to position the fixed plate in the direction perpendicular to the stretching direction.

[0016] The two ends of the slide plate are provided with a pair of downwardly extending second positioning blocks, which cooperate with the pair of guide surfaces to guide the sliding of the slide plate.

[0017] Optionally, the mounting plane of the fixed end is provided with a first fixing hole, and the fixed plate is provided with a second fixing hole that matches the first fixing hole. The fixing bolt passes through the second fixing hole and the first fixing hole to fix the fixed plate to the mounting plane of the fixed end.

[0018] Optionally, the tension end mounting plane is provided with a pair of guide elongated holes, the length direction of the guide elongated holes being arranged in the same direction as the tension direction, the slide plate is provided with a pair of guide bolt holes, the pair of guide elongated holes and the pair of guide bolt holes are matched, the pair of guide bolt holes are provided with a pair of guide bolts, the guide bolts pass through the guide elongated holes, and the guide bolts cooperate with the guide elongated holes to guide the sliding of the slide plate.

[0019] Optionally, the upper surface of the fixed plate, the upper surface of the sliding plate, the upper surface of the fixed end clamping plate, and the upper surface of the stretching end clamping plate are all provided with sample placement grooves, and the depth of the sample placement grooves is less than the thickness of the sample.

[0020] Optionally, the fixed plate, the sliding plate, the fixed end clamping plate, and the stretching end clamping plate are all provided with multiple threaded holes for interconnection, and connecting bolts are provided in the threaded holes.

[0021] Optionally, the adjustment mechanism includes:

[0022] The fixing part is fixedly connected to the base, and the fixing part is provided with adjustment bolt mounting holes;

[0023] A sliding part is fixedly connected to the sliding plate, and the sliding part is provided with an adjusting bolt threaded hole;

[0024] An adjusting bolt is provided along the tension direction. The end of the adjusting bolt is located in the adjusting bolt mounting hole. The adjusting bolt can rotate within the adjusting bolt mounting hole but cannot slide. The threaded portion of the adjusting bolt is threadedly connected to the threaded hole of the adjusting bolt. Rotating the adjusting bolt can cause the slide plate to slide.

[0025] Optionally, the rubber tensile testing device further includes:

[0026] Multiple feet are fixedly connected to the base for contact with the ground.

[0027] Optionally, the rubber tensile testing device further includes:

[0028] Multiple lifting plates are provided, which are fixedly connected to the base, and each lifting plate is provided with lifting holes.

[0029] The beneficial effects of this invention are as follows: It provides a rubber tensile testing device, including a detachably connected multi-layer fixed end clamp and a detachably connected multi-layer tensile end clamp. The multi-layer structure allows for simultaneous clamping of multiple samples, enabling batch testing; the detachable connection structure allows for the removal of samples layer by layer for testing according to the testing cycle, achieving the ability to obtain performance indicators with different tensile times in a single test.

[0030] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0031] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0032] Figure 1 One of the schematic structural diagrams of a rubber tensile testing apparatus according to an embodiment of the present invention is shown.

[0033] Figure 2 A second schematic structural diagram of a rubber tensile testing apparatus according to an embodiment of the present invention is shown.

[0034] Figure 3 The third schematic structural diagram of a rubber tensile testing apparatus according to an embodiment of the present invention is shown.

[0035] Figure 4 The fourth schematic structural diagram of a rubber tensile testing apparatus according to an embodiment of the present invention is shown.

[0036] Figure 5One of the schematic structural diagrams of a base according to an embodiment of the present invention is shown.

[0037] Figure 6 A second schematic structural diagram of a base according to an embodiment of the present invention is shown.

[0038] Figure 7 One of the schematic structural diagrams of a plate according to an embodiment of the present invention is shown.

[0039] Figure 8 A second schematic structural diagram of a plate according to an embodiment of the present invention is shown.

[0040] Figure 9 One of the schematic structural diagrams of a skateboard according to an embodiment of the present invention is shown.

[0041] Figure 10 A second schematic structural diagram of a skateboard according to an embodiment of the present invention is shown.

[0042] Figure 11 A schematic structural diagram of a fixed-end clamping plate according to an embodiment of the present invention is shown.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Base; 11. Fixed end mounting plane; 12. Tensioning end mounting plane; 13. Boss; 14. Guide surface; 15. First fixing hole; 16. Fixing bolt; 17. Guide elongated hole; 18. Guide bolt;

[0045] 2. Fixed plate; 21. First positioning block; 22. Second fixing hole; 23. Sample placement groove;

[0046] 3. Slide plate; 31. Second positioning block; 32. Guide bolt hole;

[0047] 4. Fixed end clamp; 41. Connecting threaded hole; 42. Connecting bolt;

[0048] 5. Tensioning end clamp;

[0049] 6. Adjustment mechanism; 61. Fixing part; 62. Adjustment bolt mounting hole; 63. Sliding part; 64. Adjustment bolt threaded hole; 65. Adjustment bolt;

[0050] 7. Foot;

[0051] 8. Lifting plate; 81. Lifting hole;

[0052] 9. Sample. Detailed Implementation

[0053] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0054] This embodiment provides a rubber tensile testing device, including:

[0055] The base 1 has a fixed end mounting plane 11 and a tension end mounting plane 12 formed on its upper surface.

[0056] Fixed plate 2, the lower surface of fixed plate 2 is fixedly installed on the fixed end mounting plane 11 of base 1;

[0057] The slide plate 3 has its lower surface slidably mounted on the tension end mounting plane 12 of the base 1, and the slide plate 3 can slide along the tension direction of the sample 9.

[0058] Multiple fixed end clamps 4 are stacked on the upper surface of the fixed plate 2. Any two adjacent fixed end clamps 4 and the bottom fixed end clamp 4 can be detachably connected and used to clamp the fixed end of the sample 9.

[0059] Multiple tensile end clamps 5 are arranged in pairs with multiple fixed end clamps 4. The multiple tensile end clamps 5 are stacked on the upper surface of the slide plate 3. Any two adjacent tensile end clamps 5 and the bottommost tensile end clamp 5 and the slide plate 3 can be detachably connected and used to clamp the tensile end of the sample 9.

[0060] Adjustment mechanism 6, connected to slide plate 3, is used to drive slide plate 3 to stretch specimen 9.

[0061] In this embodiment, the fixed end clamp 4 and the tension end clamp 5 adopt a symmetrical structure.

[0062] Specifically, the device consists of two parts: a fixed end and a tensile end, both mounted on a base 1. The bottom of the fixed end is a fixed plate 2, which is fixed to the base 1. The bottom of the tensile end is a sliding plate 3, which is slidably connected to the base 1. An adjustment mechanism 6 drives the sliding plate 3 to slide linearly on the base 1. Fixed end clamping plates 4 and tensile end clamping plates 5 are stacked on top of the fixed plate 2 and sliding plate 3. Rubber samples 9 are placed and clamped between adjacent layers of fixed end clamping plates 4 and between adjacent layers of tensile end clamping plates 5. The multi-layer structure allows for the simultaneous clamping of multiple samples 9, enabling batch testing. The detachable connection structure allows for the removal of samples 9 layer by layer for testing according to the testing cycle, enabling performance testing at different tensile times in a single test. During testing, the rubber samples 9 are first uniformly stretched to a certain length, and then the entire device is subjected to accelerated testing in specific environments such as a hot air box or reaction vessel. Finally, according to the testing plan, samples 9 are removed layer by layer from top to bottom for testing, allowing for the detection of performance indicators such as permanent deformation, hardness, modulus, and crosslinking density of samples 9 at different times.

[0063] Optionally, a boss 13 is provided between the fixed end mounting plane 11 and the tension end mounting plane 12. One side of the boss 13 is used to limit the fixed plate 2 in the tension direction, and the other side of the boss 13 is used to limit the sliding plate 3 in the opposite tension direction.

[0064] Specifically, the boss 13 can improve the installation accuracy of the fixed plate 2 and the movement accuracy of the sliding plate 3.

[0065] Optionally, a pair of guide surfaces 14 parallel to the stretching direction are formed at both ends of the base 1;

[0066] The fixed plate 2 has a pair of downwardly extending first positioning blocks 21 at both ends. The pair of first positioning blocks 21 cooperate with a pair of guide surfaces 14 to position the fixed plate 2 in the direction perpendicular to the stretching direction.

[0067] The two ends of the slide plate 3 are provided with a pair of downwardly extending second positioning blocks 31. The pair of second positioning blocks 31 cooperate with a pair of guide surfaces 14 to guide the sliding of the slide plate 3.

[0068] Specifically, the guide surface 14 and the first positioning block 21 work together to improve the installation accuracy of the fixed plate 2, and the guide surface 14 and the second positioning block 31 work together to improve the movement accuracy of the slide plate 3.

[0069] Optionally, the fixed end mounting plane 11 is provided with a first fixing hole 15, and the fixed plate 2 is provided with a second fixing hole 22 that matches the first fixing hole 15. The fixing bolt 16 passes through the second fixing hole 22 and the first fixing hole 15 to fix the fixed plate 2 to the fixed end mounting plane 11.

[0070] In this embodiment, the first fixing hole 15 is a U-shaped hole, which facilitates the adjustment of the position of the fixing plate 2.

[0071] Optionally, the tension end mounting plane 12 is provided with a pair of guide elongated holes 17, the length direction of the guide elongated holes 17 is set in the same direction as the tension direction, the slide plate 3 is provided with a pair of guide bolt holes 32, the pair of guide elongated holes 17 are matched with the pair of guide bolt holes 32, the pair of guide bolt holes 32 are provided with a pair of guide bolts 18, the guide bolts 18 pass through the guide elongated holes 17, and the guide bolts 18 cooperate with the guide elongated holes 17 to guide the sliding of the slide plate 3.

[0072] Specifically, the cooperation between the guide bolt 18 and the guide elongated hole 17 can improve the motion accuracy of the slide plate 3.

[0073] Optionally, the upper surface of the fixed plate 2, the upper surface of the sliding plate 3, the upper surface of the fixed end clamping plate 4, and the upper surface of the stretching end clamping plate 5 are all provided with sample placement grooves 23, the depth of which is less than the thickness of the sample 9.

[0074] Specifically, the sample placement groove 23 can position the sample 9 and can also prevent the sample 9 from being damaged by excessive compression by setting a reasonable depth.

[0075] Optionally, the fixed plate 2, the sliding plate 3, the fixed end clamping plate 4, and the stretching end clamping plate 5 are all provided with multiple connecting threaded holes 41 for interconnection, and connecting bolts 42 are provided in the connecting threaded holes 41.

[0076] Specifically, the connecting threaded holes 41 and the connecting bolts 42 enable detachable connections between the layers, and allow for adjustment of the clamping force by tightening the connecting bolts 42. In this embodiment, the connecting threaded holes 41 of the upper and lower layers are staggered and have countersunk holes to prevent interference between the connecting bolts 42 and the fixed end clamping plate 4 and the tensioning end clamping plate 5.

[0077] Optionally, the adjusting mechanism 6 includes:

[0078] The fixing part 61 is fixedly connected to the base 1, and the fixing part 61 is provided with an adjustment bolt mounting hole 62;

[0079] The sliding part 63 is fixedly connected to the slide plate 3, and the sliding part 63 is provided with an adjusting bolt threaded hole 64;

[0080] Adjusting bolt 65 is set along the tension direction. The end of adjusting bolt 65 is set in adjusting bolt mounting hole 62. Adjusting bolt 65 can rotate in adjusting bolt mounting hole 62 and cannot slide. The threaded part of adjusting bolt 65 is threadedly connected to adjusting bolt threaded hole 64. Rotating adjusting bolt 65 can drive slide plate 3 to slide.

[0081] Optionally, the rubber tensile testing apparatus also includes:

[0082] Multiple feet 7 are fixedly connected to the base 1 for contact with the ground.

[0083] Specifically, when the device is placed on the ground, the feet 7 provide support. In this embodiment, there are four feet 7.

[0084] Optionally, the rubber tensile testing apparatus also includes:

[0085] Multiple lifting plates 8 are fixedly connected to the base 1, and the lifting plates 8 are provided with lifting holes 81.

[0086] Specifically, the lifting holes 81 are used to thread steel wire ropes or lifting slings to lift the device. In this embodiment, there are four lifting plates 8.

[0087] It should be noted that in general testing environments, carbon steel can be used as the material for the apparatus. In corrosive media, the entire apparatus must be made of stainless steel. The length, width, and number of layers of the apparatus can be selected according to the size and quantity of the sample 9; this invention does not impose specific limitations.

[0088] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A rubber tensile testing device, characterized in that, include: The base (1) has a fixed end mounting plane (11) and a tension end mounting plane (12) formed on its upper surface; Fixed plate (2), the lower surface of which is fixedly installed on the fixed end mounting plane (11) of the base (1); The slide plate (3) has its lower surface slidably mounted on the tension end mounting plane (12) of the base (1), and the slide plate (3) can slide along the tension direction of the sample (9); Multiple fixed end clamps (4) are stacked on the upper surface of the fixed plate (2). Any two adjacent fixed end clamps (4) and the bottommost fixed end clamp (4) and the fixed plate (2) can be detachably connected and used to clamp the fixed end of the sample (9). Multiple stretching end clamps (5) are arranged in pairs with multiple fixed end clamps (4). The multiple stretching end clamps (5) are stacked on the upper surface of the slide plate (3). Any two adjacent stretching end clamps (5) and the bottommost stretching end clamp (5) and the slide plate (3) can be detachably connected and used to clamp the stretching end of the sample (9). The adjustment mechanism (6) is connected to the slide plate (3) and is used to drive the slide plate (3) to slide to stretch the sample (9).

2. The rubber tensile testing device according to claim 1, characterized in that, A boss (13) is provided between the fixed end mounting plane (11) and the tension end mounting plane (12). One side of the boss (13) is used to limit the fixed plate (2) in the tension direction, and the other side of the boss (13) is used to limit the sliding plate (3) in the opposite tension direction.

3. The rubber tensile testing device according to claim 2, characterized in that, The base (1) has a pair of guide surfaces (14) at both ends that are parallel to the stretching direction; The fixed plate (2) is provided with a pair of downwardly extending first positioning blocks (21) at both ends. The pair of first positioning blocks (21) cooperate with the pair of guide surfaces (14) to position the fixed plate (2) in the vertical direction of the stretching direction. The two ends of the slide plate (3) are provided with a pair of downwardly extending second positioning blocks (31), and the pair of second positioning blocks (31) cooperate with the pair of guide surfaces (14) to guide the sliding of the slide plate (3).

4. The rubber tensile testing device according to claim 1, characterized in that, The fixed end mounting plane (11) is provided with a first fixing hole (15), and the fixed plate (2) is provided with a second fixing hole (22) that matches the first fixing hole (15). The fixing bolt (16) passes through the second fixing hole (22) and the first fixing hole (15) to fix the fixed plate (2) to the fixed end mounting plane (11).

5. The rubber tensile testing device according to claim 1, characterized in that, The tension end mounting plane (12) is provided with a pair of guide elongated holes (17), the length direction of the guide elongated holes (17) is set in the same direction as the tension direction, the slide plate (3) is provided with a pair of guide bolt holes (32), the pair of guide elongated holes (17) matches the pair of guide bolt holes (32), the pair of guide bolt holes (32) is provided with a pair of guide bolts (18), the guide bolts (18) pass through the guide elongated holes (17), the guide bolts (18) cooperate with the guide elongated holes (17) to guide the sliding of the slide plate (3).

6. The rubber tensile testing device according to claim 1, characterized in that, The upper surface of the fixed plate (2), the upper surface of the sliding plate (3), the upper surface of the fixed end clamping plate (4) and the upper surface of the stretching end clamping plate (5) are all provided with sample placement grooves (23), and the depth of the sample placement grooves (23) is less than the thickness of the sample (9).

7. The rubber tensile testing device according to claim 1, characterized in that, The fixed plate (2), the sliding plate (3), the fixed end clamping plate (4) and the stretching end clamping plate (5) are all provided with multiple connecting threaded holes (41) for interconnection, and connecting bolts (42) are provided in the connecting threaded holes (41).

8. The rubber tensile testing device according to claim 1, characterized in that, The adjustment mechanism (6) includes: The fixing part (61) is fixedly connected to the base (1), and the fixing part (61) is provided with an adjusting bolt mounting hole (62); A sliding part (63) is fixedly connected to the sliding plate (3), and the sliding part (63) is provided with an adjusting bolt thread hole (64); An adjusting bolt (65) is provided along the stretching direction. The end of the adjusting bolt (65) is located in the adjusting bolt mounting hole (62). The adjusting bolt (65) can rotate within the adjusting bolt mounting hole (62) and cannot slide. The threaded portion of the adjusting bolt (65) is threadedly connected to the adjusting bolt threaded hole (64). Rotating the adjusting bolt (65) can drive the sliding plate (3) to slide.

9. The rubber tensile testing device according to claim 1, characterized in that, Also includes: Multiple feet (7) are fixedly connected to the base (1).

10. The rubber tensile testing device according to claim 1, characterized in that, Also includes: Multiple lifting plates (8) are fixedly connected to the base (1), and the lifting plates (8) are provided with lifting holes (81).

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