Testing device for chemical material analysis

Abstract

The invention relates to a testing device for chemical material analysis, which comprises a base, a puncture needle, a pressure sensor, a tension sensor and a clamp, the clamp comprises an upper clamping plate and a lower clamping plate which are identical in shape and size, and the upper clamping plate and the lower clamping plate are provided with puncture holes for the puncture needle to penetrate through. The upper clamping plate and the lower clamping plate respectively comprise two semicircular clamping plates, and the two semicircular clamping plates which correspond to each other up and down are detachably and fixedly connected; a lifting plate is connected to the base in a lifting mode, the puncture needle is vertically arranged on the lifting plate, the pressure sensor is arranged between the lifting plate and the puncture needle, two driving blocks are arranged at the lower ends of the two semicircular clamping plates of the lower clamping plate, and the tension sensor is arranged between the driving blocks and the semicircular clamping plates. According to the invention, the tensile strength test and the puncture strength test can be integrated on the same sample, so that the sample material is saved, the assembling and disassembling steps of the clamp are reduced, and the integration and automation of the whole test are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of material analysis, and in particular to a testing device for chemical material analysis. Background Art

[0002] With the progress of science and technology, new materials are constantly showing a development trend, and their uses are constantly expanding to various fields. New material technology is a technology that creates new materials that can meet various needs according to human will through a series of research processes such as physical research, material design, material processing, and test evaluation. New materials are divided into four categories according to the properties of the materials, including metal materials, inorganic non-metallic materials (such as ceramics, gallium arsenide semiconductors, etc.), organic polymer materials, and advanced composite materials. According to the performance of the materials, there are structural materials and functional materials. Structural materials mainly use the mechanical and physical and chemical properties of materials to meet the performance requirements of high strength, high stiffness, high hardness, high temperature resistance, wear resistance, corrosion resistance, and radiation resistance. Stealth materials can absorb electromagnetic waves or reduce the infrared radiation of weapons and equipment, making it difficult for enemy detection systems to detect them. New material technology is called the "mother of invention" and "industrial food."

[0003] High-performance rubber materials are new chemical materials, such as acrylic rubber, silicone rubber, fluororubber, hydrogenated nitrile rubber, halogenated butyl rubber, butyl rubber, polysulfide rubber, polyurethane elastomer, etc. These materials are widely used in the automotive industry, aerospace, machinery, petroleum industry, electronics industry and other fields, and are often used to manufacture various new oil seals, sealing materials, special pipe and belt products, shock-absorbing materials, etc. Based on the application scenarios of high-performance rubber materials, tensile strength and puncture strength tests are required when analyzing them to evaluate the tensile and puncture resistance of high-performance rubber materials under various conditions. The strength, toughness, durability and other properties of new materials can be determined, providing a reference for the design and production of new materials.

[0004] At present, the tensile strength test is to fix the two ends of the high-performance rubber material on the fixture, test it by lateral stretching, and record the change of the tensile force value through the tension sensor. The puncture strength test also needs to use the fixture to fix the high-performance rubber material, and puncture it with the downward pressing puncture needle. During the puncture process, the pressure value change of the puncture needle is recorded by the pressure sensor, so as to feedback the force at the moment of fracture and the moment of puncture. In the above test method, the tensile strength test and the puncture strength test of the high-performance rubber material need to be carried out separately, which is easy to cause sample waste and is not conducive to the integration and automation of the entire test. Summary of the invention

[0005] The embodiment of the present invention provides a testing device for chemical material analysis, which can solve the problems existing in the prior art.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a test device for chemical material analysis, comprising a base, a puncture needle, a pressure sensor, a tension sensor and a clamp, wherein the clamp comprises an upper splint and a lower splint of two shapes and sizes that are exactly the same, wherein the upper splint and the lower splint are provided with puncture holes for the puncture needle to pass through, wherein the upper splint and the lower splint respectively comprise two semicircular splints, and the two corresponding upper and lower semicircular splints are detachably fixedly connected;

[0007] The base is liftably connected to a lifting plate, the puncture needle is vertically arranged on the lifting plate, the pressure sensor is arranged between the lifting plate and the puncture needle, the lower ends of the two semicircular splints of the lower splint are provided with two driving blocks, the tension sensor is arranged between the driving block and the semicircular splint, during testing, the high-performance rubber material is fixed between the upper splint and the lower splint, the puncture needle is lifted and lowered to puncture the high-performance rubber material, and the two driving blocks drive the horizontally corresponding semicircular splints to move away from each other and stretch the high-performance rubber material.

[0008] Preferably, a disc is provided above the base, and a guide groove is radially opened on the upper surface of the disc. A bidirectional screw is rotatably connected inside the guide groove, and two screw nuts are transmission-connected to the bidirectional screw. The two screw nuts are respectively mounted on two driving blocks slidably connected to the guide groove, and a second driving part whose output end is fixedly connected to the bidirectional screw is provided at the end of the guide groove.

[0009] Preferably, a first driving unit is provided inside the base, a turntable is provided at the output end of the first driving unit, an eccentric pin is eccentrically provided on the turntable, a connecting rod is rotatably connected to the eccentric pin, and the upper end of the connecting rod is hinged to the lifting plate.

[0010] Preferably, a guide rod is vertically arranged on the base, and a guide hole matched with the guide rod is opened on the lifting plate.

[0011] Preferably, the annular array of puncture holes is provided in plurality.

[0012] Preferably, a driving bevel gear is provided at the output end of the first driving part, a driven bevel gear meshing with the driving bevel gear is rotatably connected inside the base, a driving wheel is coaxially provided on the driven bevel gear, a driving pin is eccentrically provided on the driving wheel, the disc is rotatably connected to the base, a driven wheel is coaxially provided on the disc, a driven groove matching the driving pin is arranged at the edge of the driven wheel, and the number of the driven grooves is the same as the number of puncture holes.

[0013] Preferably, a locking arc opposite to the driving pin is provided on the driving wheel, and a locking groove matched with the locking arc is arranged at the edge of the driven wheel, and the number of the locking grooves is the same as the number of the driven grooves.

[0014] Preferably, the clamp further comprises an ear plate arranged on the edge of the semicircular clamping plate, the ear plate is provided with an internal threaded hole, and further comprises a bolt matched with the internal threaded hole.

[0015] Preferably, a slot is provided on the inner side of the semicircular clamping plate, and an insertion rod adapted to the slot is provided on the semicircular clamping plate corresponding horizontally.

[0016] Compared with the prior art, the present invention adopts the coordinated arrangement of an upper splint, a lower splint, a puncture needle, a puncture hole, a semicircular splint, a base, a lifting plate, a pressure sensor, a drive block and a tension sensor. The upper splint and the lower splint are used to fix the high-performance rubber material to be tested. The lifting plate drives the puncture needle to descend through the puncture hole to perform a puncture test on the high-performance rubber material. During the puncture process, the pressure value change of the puncture needle is recorded by the pressure sensor, thereby feeding back the force at the moment of puncture. After the puncture needle is reset, the two drive blocks drive the horizontally corresponding semicircular splints to move away from each other to perform a tensile test on the high-performance rubber material. During the stretching process, the tension value change is recorded by the tension sensor, thereby feeding back the force at the moment of fracture. By adopting this testing method, the tensile strength test and the puncture strength test can be concentrated on the same sample, saving sample materials, reducing the steps of assembling and disassembling the fixture, and the two tests do not affect each other, which is conducive to the integration and automation of the entire test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the top view of the disc structure of the present invention;

[0020] Figure 4 It is a schematic diagram of a top view and cross-sectional structure of the clamp of the present invention;

[0021] Figure 5 This is a schematic diagram of the transmission structure of the driving wheel and the driven wheel of the present invention;

[0022] Figure 6 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0023] In the figure: 1. upper splint; 2. lower splint; 3. semicircular splint; 4. puncture needle; 5. puncture hole; 6. base; 7. first driving part; 8. turntable; 9. eccentric pin; 10. connecting rod; 11. lifting plate; 12. disc; 13. guide groove; 14. second driving part; 15. bidirectional screw; 16. driving block; 17. ear plate; 18. bolt; 19. guide rod; 20. guide hole; 21. active bevel gear; 22. driven bevel gear; 23. driving wheel; 24. driving pin; 25. driven wheel; 26. driven groove; 27. locking arc; 28. locking groove; 29. ​​slot; 30. plug rod. DETAILED DESCRIPTION

[0024] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1 to Figure 6 As shown, a test device for chemical material analysis includes a base 6, a puncture needle 4, a pressure sensor, a tension sensor and a clamp, the clamp includes an upper splint 1 and a lower splint 2 of exactly the same shape and size, the upper splint 1 and the lower splint 2 are provided with a puncture hole 5 for the puncture needle 4 to pass through, the upper splint 1 and the lower splint 2 respectively include two semicircular splints 3, and the two corresponding upper and lower semicircular splints 3 are detachably fixedly connected;

[0026] A lifting plate 11 is connected to the base 6 in a liftable manner, the puncture needle 4 is vertically arranged on the lifting plate 11, the pressure sensor is arranged between the lifting plate 11 and the puncture needle 4, two driving blocks 16 are arranged at the lower ends of the two semicircular splints 3 of the lower splint 2, and the tension sensor is arranged between the driving block 16 and the semicircular splint 3. During testing, the high-performance rubber material is fixed between the upper splint 1 and the lower splint 2, the puncture needle 4 is lifted and lowered to puncture the high-performance rubber material, and the two driving blocks 16 drive the horizontally corresponding semicircular splints 3 to move away from each other to stretch the high-performance rubber material.

[0027] During specific use, the high-performance rubber material to be tested is fixed by the upper splint 1 and the lower splint 2, and the lifting plate 11 drives the puncture needle 4 to descend and pass through the puncture hole 5 to perform a puncture test on the high-performance rubber material. During the puncture process, the pressure value change of the puncture needle is recorded by the pressure sensor, thereby feeding back the force at the moment of puncture. After the puncture needle 4 is reset, the two driving blocks 16 drive the horizontally corresponding semicircular splints 3 to move away from each other to perform a tensile test on the high-performance rubber material. During the stretching process, the tension value change is recorded by the tension sensor, thereby feeding back the force at the moment of fracture.

[0028] In order to achieve the purpose of tensile testing of high-performance rubber materials, preferably, a disc 12 is arranged above the base 6, and a guide groove 13 is radially opened on the upper surface of the disc 12. A bidirectional screw rod 15 is rotatably connected inside the guide groove 13. Two screw nuts are transmission-connected to the bidirectional screw rod 15. The two screw nuts are respectively mounted on two driving blocks 16 slidably connected to the guide groove 13. A second driving part 14 with an output end fixedly connected to the bidirectional screw rod 15 is provided at the end of the guide groove 13.

[0029] Specifically, the second drive unit 14 is a motor. When performing the puncture test, the second drive unit 14 drives the bidirectional screw 15 to rotate forward. Under the guiding action of the guide groove 13, the two screw nuts drive the corresponding horizontal semicircular splints 3 to approach each other through the two drive blocks 16 to form a circular clamp, and the high-performance rubber material is fixed by the clamp. When performing the tensile test after the puncture test, the second drive unit 14 drives the bidirectional screw 15 to rotate in the opposite direction. Under the guiding action of the guide groove 13, the two screw nuts drive the corresponding horizontal semicircular splints 3 to move away from each other through the two drive blocks 16, and lateral tension is applied to the high-performance rubber material. The change in tension value is recorded by the tension sensor, thereby feeding back the force at the moment of fracture.

[0030] In order to achieve the purpose of puncture testing of high-performance rubber materials, preferably, a first driving unit 7 is provided inside the base 6, a turntable 8 is provided at the output end of the first driving unit 7, an eccentric pin 9 is eccentrically provided on the turntable 8, a connecting rod 10 is rotatably connected to the eccentric pin 9, the upper end of the connecting rod 10 is hinged to the lifting plate 11, a guide rod 19 is vertically provided on the base 6, and a guide hole 20 matched with the guide rod 19 is opened on the lifting plate 11.

[0031] Specifically, the first driving unit 7 is a motor. When performing a puncture test, the first driving unit 7 drives the eccentric pin 9 on the turntable 8 to rotate. Since the guide rod 19 plays a lifting and guiding role on the lifting plate 11 through the guide hole 20, the eccentric pin 9 will drive the puncture needle 4 on the lifting plate 11 to perform reciprocating lifting and lowering motion through the connecting rod 10, so that the puncture needle 4 passes through the high-performance rubber material from the puncture hole 5, and the pressure value change of the puncture needle is recorded by the pressure sensor, thereby feeding back the force at the moment of puncture.

[0032] In order to improve the accuracy of the puncture test, preferably, a plurality of puncture holes 5 are provided in a circular array, and multiple puncture tests can be performed on the same sample to take an average value, thereby improving the accuracy and reliability of the test results.

[0033] In order to achieve the purpose of improving the accuracy of the puncture test, preferably, a driving bevel gear 21 is provided at the output end of the first driving part 7, a driven bevel gear 22 meshing with the driving bevel gear 21 is rotatably connected inside the base 6, a driving wheel 23 is coaxially provided with the driven bevel gear 22, a driving pin 24 is eccentrically provided on the driving wheel 23, the disc 12 is rotatably connected to the base 6, a driven wheel 25 is coaxially provided with the disc 12, and a driven groove 26 adapted to the driving pin 24 is arranged at the edge of the driven wheel 25, and the number of the driven grooves 26 is the same as the number of the puncture holes 5.

[0034] The driving wheel 23 is provided with a locking arc 27 opposite to the driving pin 24 , and the edge of the driven wheel 25 is provided with a locking groove 28 matched with the locking arc 27 , and the number of the locking grooves 28 is the same as the number of the driven grooves 26 .

[0035] Specifically, when performing the puncture test, the first driving unit 7 drives the turntable 8 to rotate while synchronously driving the active bevel gear 21 to rotate. The active bevel gear 21 drives the driving pin 24 on the driving wheel 23 to rotate through the driven bevel gear 22. When the driving pin 24 is embedded in the driven groove 26, it drives the driven wheel 25 to rotate intermittently, and performs a station conversion. The puncture needle 4 reciprocates and rises and falls once, and each time the station conversion is performed, the locking arc 27 is embedded in the locking groove 28 once to prevent the driven wheel 25 from rotating by inertia, so that the puncture needle 4 can accurately pass through the puncture hole 5 to perform a puncture test on the high-performance rubber material.

[0036] In order to facilitate the installation and disassembly of high-performance rubber materials, preferably, the clamp also includes an ear plate 17 arranged on the edge of the semicircular clamp plate 3, and the ear plate 17 is provided with an internal threaded hole, and also includes a bolt 18 adapted to the internal threaded hole. The upper clamp plate 1 and the lower clamp plate 2 are installed and disassembled by the bolt 18, and materials of different specifications and sizes can be clamped. It has a wide range of applications and strong practicality.

[0037] Preferably, a slot 29 is provided on the inner side of the semicircular clamp 3, and an insertion rod 30 adapted to the slot 29 is provided on the horizontally corresponding semicircular clamp 3. The arrangement of the slot 29 and the insertion rod 30 is helpful to improve the accuracy of the fixture installation and provide convenience for the assembly and disassembly of the material.

[0038] Compared with the prior art, the present invention adopts the coordinated arrangement of an upper splint 1, a lower splint 2, a puncture needle 4, a puncture hole 5, a semicircular splint 3, a base 6, a lifting plate 11, a pressure sensor, a drive block 16 and a tension sensor. The upper splint 1 and the lower splint 2 are used to fix the high-performance rubber material to be tested, and the lifting plate 11 drives the puncture needle 4 to descend and pass through the puncture hole 5 to perform a puncture test on the high-performance rubber material. During the puncture process, the pressure value change of the puncture needle is recorded by the pressure sensor, thereby feeding back the force at the moment of puncture. After the puncture needle 4 is reset, the two drive blocks 16 drive the semicircular splints 3 corresponding to the horizontal level to move away from each other to perform a tensile test on the high-performance rubber material. During the stretching process, the tension value change is recorded by the tension sensor, thereby feeding back the force at the moment of fracture. By adopting this testing method, the tensile strength test and the puncture strength test can be concentrated on the same sample, saving sample materials, reducing the assembly and disassembly steps of the fixture, and the two tests do not affect each other, which is conducive to the integration and automation of the entire test.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A testing device for chemical material analysis, comprising a base (6), a puncture needle (4), a pressure sensor, a tension sensor and a clamp, characterized in that: The clamp comprises an upper splint (1) and a lower splint (2) of exactly the same shape and size, wherein the upper splint (1) and the lower splint (2) are provided with a puncture hole (5) for the puncture needle (4) to pass through, and the upper splint (1) and the lower splint (2) respectively comprise two semicircular splints (3), and the two corresponding upper and lower semicircular splints (3) are detachably fixedly connected; The base (6) is connected to a lifting plate (11) in a liftable manner, the puncture needle (4) is vertically arranged on the lifting plate (11), the pressure sensor is arranged between the lifting plate (11) and the puncture needle (4), the lower ends of the two semicircular splints (3) of the lower splint (2) are provided with two driving blocks (16), the tension sensor is arranged between the driving block (16) and the semicircular splint (3), during testing, the high-performance rubber material is fixed between the upper splint (1) and the lower splint (2), the puncture needle (4) is lifted and lowered to puncture the high-performance rubber material, and the two driving blocks (16) drive the semicircular splints (3) corresponding to the horizontal level to move away from each other to stretch the high-performance rubber material.

2. The testing device for chemical material analysis according to claim 1, characterized in that: A disc (12) is arranged above the base (6), a guide groove (13) is radially opened on the upper surface of the disc (12), a bidirectional screw rod (15) is rotatably connected inside the guide groove (13), two screw rod nuts are transmission-connected to the bidirectional screw rod (15), the two screw rod nuts are respectively mounted on two driving blocks (16) slidably connected to the guide groove (13), and a second driving part (14) whose output end is fixedly connected to the bidirectional screw rod (15) is arranged at the end of the guide groove (13).

3. The testing device for chemical material analysis according to claim 1 or 2, characterized in that: A first driving part (7) is arranged inside the base (6); a turntable (8) is arranged at the output end of the first driving part (7); an eccentric pin (9) is eccentrically arranged on the turntable (8); a connecting rod (10) is rotatably connected to the eccentric pin (9); and the upper end of the connecting rod (10) is hinged to the lifting plate (11).

4. The testing device for chemical material analysis according to claim 3, characterized in that: A guide rod (19) is vertically arranged on the base (6), and a guide hole (20) adapted to the guide rod (19) is opened on the lifting plate (11).

5. The testing device for chemical material analysis according to claim 3, characterized in that: A plurality of puncture holes (5) are arranged in a circular array.

6. The testing device for chemical material analysis according to claim 5, characterized in that: The output end of the first driving part (7) is provided with a driving bevel gear (21), the interior of the base (6) is rotatably connected with a driven bevel gear (22) meshing with the driving bevel gear (21), the driven bevel gear (22) is coaxially provided with a driving wheel (23), and a driving pin (24) is eccentrically provided on the driving wheel (23), the disc (12) is rotatably connected to the base (6), the disc (12) is coaxially provided with a driven wheel (25), and the edge of the driven wheel (25) is provided with a driven groove (26) adapted to the driving pin (24), and the number of the driven grooves (26) is the same as the number of the puncture holes (5).

7. The testing device for chemical material analysis according to claim 6, characterized in that: The driving wheel (23) is provided with a locking arc (27) opposite to the driving pin (24), and the edge of the driven wheel (25) is provided with a locking groove (28) adapted to the locking arc (27), and the number of the locking grooves (28) is the same as the number of the driven grooves (26).

8. The testing device for chemical material analysis according to claim 1, characterized in that: The clamp further comprises an ear plate (17) arranged on the edge of the semicircular clamping plate (3), the ear plate (17) being provided with an internal threaded hole and a bolt (18) adapted to the internal threaded hole.

9. The testing device for chemical material analysis according to claim 1, characterized in that: A slot (29) is provided on the inner side of the semicircular clamping plate (3), and an insertion rod (30) adapted to the slot (29) is provided on the semicircular clamping plate (3) corresponding to the horizontal position.

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