Multi-station film electronic tensile testing machine

Abstract

The utility model belongs to the technical field of film electronic tension testing, provide a kind of multi-station film electronic tension testing machine, upper and lower running mechanism is arranged between top plate and support plate, at least two stretching mechanisms are arranged along the circumferential direction of upper and lower running mechanism, guiding mechanism is arranged around upper and lower running mechanism, and upper and lower running mechanism and guiding mechanism are equipped with shell in periphery;Stretching mechanism includes holder and force value sensor, holder includes upper clamp and lower clamp for clamping sample;The utility model reduces space occupation, avoids operating risk, can conveniently, quickly operate and test, can complete the one-time presentation of data result.

Description

Technical Field

[0001] This utility model relates to the field of thin film electronic tensile testing technology, and in particular to a multi-station thin film electronic tensile testing machine. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Thin film electronic tensile testing machines are primarily used to test the tensile, peel, deformation, tear, heat-sealing, adhesion, puncture force, and opening force of plastic film materials. Currently, most thin film electronic tensile testing machines on the market are single-station machines, meaning they can only perform one test at a time, obtaining only one result. In reality, test samples need to undergo multiple tests before data analysis can be performed. Single-station electronic tensile testing machines require reloading and repositioning the sample after each test, resulting in relatively low efficiency.

[0004] Multi-station tensile testing machines have emerged in the market, but most of them are double-column structures with a relatively large overall structure. They are arranged in a straight line, and the more stations there are, the more space they need to occupy. When clamping the sample, the tester needs to move the sample, which is inconvenient. The upper and lower moving parts are exposed, and since there are no protective measures, improper operation can easily injure the operator, posing a significant safety hazard. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a multi-station thin-film electronic tensile testing machine. By arranging multiple tensile mechanisms along the circumferential direction of the upper and lower running mechanisms, the space occupied is reduced, enabling convenient and rapid operation and testing, and allowing for the one-time presentation of data results, facilitating statistical analysis or comparative testing. Furthermore, by arranging a shell around the upper and lower running mechanisms and the guiding mechanism, operational risks are avoided, and safety hazards are reduced.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A multi-station thin film electronic tensile testing machine includes: an upper and lower running mechanism, a guiding mechanism, a tensile mechanism, a top plate, and a support plate; The upper and lower running mechanism is arranged between the top plate and the support plate. At least two tensioning mechanisms are arranged along the circumference of the upper and lower running mechanism. The guide mechanism is arranged around the upper and lower running mechanism and is surrounded by a shell. The tensile mechanism includes a clamp and a force sensor for detecting tensile force. The clamp includes an upper clamp and a lower clamp for holding the specimen.

[0007] In one embodiment of this utility model, at least two elongated grooves corresponding to the number of stretching mechanisms are distributed in the middle of the shell, and the stretching mechanisms can move up and down in the elongated grooves.

[0008] As a further limitation of this utility model, the force sensor is connected to the upper clamp, the force sensor is connected to the sensor connector, the sensor connector passes through the long slot on the housing and is connected to the upper and lower running mechanisms, the lower clamp is fixed on the support plate, and the tensioning mechanism can rotate under the drive of the support plate to realize the circumferential position change.

[0009] As a further limitation of this utility model, the force sensor is connected to the upper clamp, the upper and lower running mechanism includes multiple branch beams passing through the long groove on the housing, the force sensor is connected to the branch beams, the lower clamp is fixed on the support plate, and the tensioning mechanism can rotate under the drive of the support plate to realize the circumferential position change.

[0010] As a further limitation of this utility model, the force sensor is connected to the lower clamp and fixed on the support plate. The upper clamp is connected to the clamp connector. The clamp connector passes through the long slot on the housing and is connected to the upper and lower running mechanisms. The tensioning mechanism can rotate under the drive of the support plate to realize the circumferential position change.

[0011] As a further limitation of this utility model, the force sensor is connected to the lower clamp and fixed on the support plate. The up-and-down running mechanism includes multiple branch beams passing through the long groove on the housing. The upper clamp is connected to the branch beams. The tensioning mechanism can rotate under the drive of the support plate to realize the circumferential position change.

[0012] In one embodiment of this utility model, the bottom of the support plate is connected to the rotating mechanism, and the rotating mechanism is fixed on the base plate.

[0013] As a further limitation of this utility model, the rotating mechanism is connected to the center of the support plate, and the base plate is a circular plate.

[0014] As a further limitation of this utility model, a clamping mechanism is arranged on the base plate. The output end of the clamping mechanism is used to press against the rotating mechanism or the support plate when it is extended, so that the support plate does not rotate during the test.

[0015] As a further limitation of this utility model, the clamping mechanism is a pneumatic cylinder, hydraulic cylinder, electric cylinder, gear and rack mechanism or ball screw mechanism.

[0016] As a further limitation of this utility model, the support plate is a circular plate; or, a handle is connected to the support plate.

[0017] In one implementation of this utility model, the up-and-down operating mechanism includes a movable crossbeam and a first up-and-down driving mechanism. The movable crossbeam is connected to the first up-and-down driving mechanism and can move up and down under the drive of the first up-and-down driving mechanism. The outer end face of the movable crossbeam is provided with multiple positioning grooves; or, the outer end face of the movable crossbeam is provided with multiple branch beams.

[0018] As a further limitation of this utility model, the body of the movable crossbeam is a circular plate.

[0019] As a further limitation of this utility model, the first up-and-down driving mechanism is fixed on the support plate.

[0020] As a further limitation of this utility model, the first up-and-down driving mechanism includes a lead screw, a lead screw nut, a motor, a reducer, a driving wheel, and a driven wheel. The driven wheel is connected to the lower end of the lead screw, the motor is connected to the reducer, the driving wheel is fixed to the end of the reducer shaft, the driving wheel is connected to the driven wheel through a belt, and the lead screw nut is fixed at the center position of the moving crossbeam. When the motor drives the lead screw to rotate, the lead screw nut drives the moving crossbeam to move up and down.

[0021] As a further limitation of this utility model, the guiding mechanism includes at least three guide shafts, each guide shaft being evenly arranged in a circumferential direction with the center of the moving crossbeam as the center.

[0022] As a further limitation of this utility model, the guide shaft passes through the moving crossbeam via a bushing.

[0023] As a further limitation of this utility model, it also includes a displacement sensor, one end of which is fixed to the support plate and the other end of which is fixed to the movable crossbeam.

[0024] As a further limitation of this utility model, the cross-section of the shell is circular.

[0025] In one embodiment of this utility model, a second up-and-down driving mechanism is installed on the upper part of the top plate, and the output end of the second up-and-down driving mechanism is connected to the protective cover.

[0026] In one embodiment of this utility model, the top surface of the upper clamp is provided with a groove for positioning and connecting with a force sensor; the bottom surface of the lower clamp is provided with a boss for positioning and connecting with a support plate.

[0027] In one embodiment of this utility model, a first anti-collision mechanism is arranged below the top plate, and a second anti-collision mechanism is arranged above the support plate.

[0028] In one implementation of this utility model, the upper clamp and / or the lower clamp include: Mounting base, drive mechanism, support component, first clamping block, second clamping block, and movable clamping mechanism; The drive mechanism and the support are fixed on the mounting base respectively. The second clamping block is fixed on the support. The first clamping block is connected to the output end of the drive mechanism. The first clamping block is used to cooperate with the second clamping block to clamp the film sample under the drive of the drive mechanism. The movable clamping mechanism includes: a first fixed member, a movable member, and an elastic member. The first fixed member is fixed on the support member or the mounting base, or the first fixed member is integrally formed with the support member or the mounting base. The movable part is connected to the first fixed part by an elastic element. The relative position between the movable part and the first fixed part is adjusted by a guide mechanism. The movable part includes a protrusion for cooperating with the support to clamp excess film sample.

[0029] As a further limitation of this utility model, at least one of the clamping surfaces of the first clamping block and the second clamping block is an anti-slip surface.

[0030] As a further limitation of this utility model, the output end of the drive mechanism passes through the mounting base and the support member and is connected to the first clamping block.

[0031] As a further limitation of this utility model, the guiding mechanism includes a guide rod, and the movable part has a through groove for inserting the guide rod.

[0032] As a further limitation of this utility model, the guide mechanism includes a slide rail, and a slider is connected to the movable part, with the slider being movably connected to the slide rail.

[0033] As a further limitation of this utility model, the guide mechanism includes a slide rail, and a pulley is connected to the movable part, with the pulley being movably connected to the slide rail.

[0034] As a further limitation of this utility model, the support member is a U-shaped member, the second clamping block is fixed on one side wall of the U-shaped member, and the first clamping block cooperates with the second clamping block in the internal space of the U-shaped member to clamp the film sample.

[0035] As a further limitation of this utility model, the driving mechanism is a cylinder, electric cylinder, hydraulic cylinder or gear and rack driving mechanism.

[0036] As a further limitation of this utility model, a handle block is connected to the movable part.

[0037] As a further limitation of this utility model, a handle block is integrally formed on the movable part.

[0038] As a further limitation of this utility model, the elastic element is a tension spring, a rubber elastic element, or a plastic elastic element.

[0039] In one embodiment of this utility model, the upper clamp and / or the lower clamp include: a mounting base, a driving mechanism, a support member, a first clamping block, a second clamping block, and a movable clamping mechanism; The drive mechanism and the support are fixed on the mounting base respectively. The second clamping block is fixed on the support. The first clamping block is connected to the output end of the drive mechanism. The first clamping block is used to cooperate with the second clamping block to clamp the film sample under the drive of the drive mechanism. The movable clamping mechanism includes: a second fixed member, a rotating member, and a torsion spring. The second fixed member is fixed on the support member or the mounting base, or the second fixed member is integrally formed with the support member or the mounting base. The rotating component and the second fixed component are connected by a pin. A torsion spring is sleeved on the pin. One end of the torsion spring is connected to the rotating component, and the other end of the torsion spring is connected to the second fixed component. The rotating component includes a protrusion for cooperating with the support to clamp excess film sample.

[0040] As a further limitation of this utility model, the output end of the drive mechanism passes through the mounting base and the support member and is connected to the first clamping block.

[0041] As a further limitation of this utility model, at least one of the clamping surfaces of the first clamping block and the second clamping block is an anti-slip surface.

[0042] As a further limitation of this utility model, the support member is a U-shaped member, the second clamping block is fixed on one side wall of the U-shaped member, and the first clamping block cooperates with the second clamping block in the internal space of the U-shaped member to clamp the film sample.

[0043] As a further limitation of this utility model, the driving mechanism is a cylinder, electric cylinder, hydraulic cylinder or gear and rack driving mechanism.

[0044] As a further limitation of this utility model, a handle block is connected to the rotating part.

[0045] As a further limitation of this utility model, a handle block is integrally formed on the rotating part.

[0046] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model innovatively develops a multi-station thin film electronic tensile testing machine. The overall layout adopts a column structure design, with the workstations evenly arranged along the circumference, occupying little experimental space and being easy to operate. It can be placed on a laboratory table, allowing the tester to perform sample clamping and testing operations while seated. The support plate can be rotated for sample loading, eliminating the need for the tester to move the working position.

[0047] 2. This utility model innovatively develops a multi-station thin film electronic tensile testing machine with reliable structure and high stability of operation. The whole machine adopts a metal shell and has multiple guide shafts evenly distributed, which can prevent the equipment from deviating and make the vertical operation of the equipment more stable. The tensile test of each station is relatively independent, and the test stops and returns to its position only after all the samples have been tested.

[0048] 3. This utility model innovatively develops a multi-station thin film electronic tensile testing machine. The base plate is equipped with a clamping structure. The output end of the clamping mechanism is directly opposite the rotating mechanism or the support plate to press the rotating mechanism or the support plate. During the test, it can ensure that the support plate does not rotate and does not affect the stability of the test and the test data.

[0049] 4. This utility model innovatively develops a multi-station thin film electronic tensile testing machine, which is equipped with a protective cover that can completely cover the top of the support plate. When loading the sample, the second up and down driving mechanism pushes it upward to expose the tensile mechanism, making it convenient to load the sample. When the test starts, it retracts downward, and the protective cover completely covers the top of the support plate, thus providing protection.

[0050] 5. This utility model innovatively develops a multi-station thin film electronic tensile testing machine and proposes a new type of clamping structure. It adds a movable clamping mechanism unique to soft materials, which is especially suitable for thin film samples with particularly smooth surfaces. After normal clamping operation, the excess sample that has stretched out is bent and then clamped again, which further ensures that the thin film sample does not slip during the testing process.

[0051] 6. This utility model innovatively develops a multi-station thin-film electronic tensile testing machine and proposes a novel clamping structure. At least one of the clamping surfaces of the first and second clamping blocks is an anti-slip surface, increasing the sliding friction resistance of the sample at the clamping location to ensure that the sample does not slip. Additional advantages of this utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0052] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0053] Figure 1 A schematic diagram of the multi-station thin film electronic tensile testing machine provided as an exemplary embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of a multi-station thin film electronic tensile testing machine provided as an exemplary embodiment of the present invention; Figure 3A schematic diagram showing the connection between the force sensor and the lower clamp in an exemplary embodiment of the present invention; Figure 4 A schematic diagram of an upper and lower operating mechanism provided for an exemplary embodiment of the present invention; Figure 5 A schematic diagram of a base provided for an exemplary embodiment of the present invention; Figure 6 A schematic diagram of a protective cover provided for an exemplary embodiment of the present invention; Figure 7 A schematic diagram showing the protective cover being raised, provided as an exemplary embodiment of the present invention; Figure 8 A schematic diagram of a film clamp provided for an exemplary embodiment of the present invention; Figure 9 An exploded view of an active clamping mechanism provided as an exemplary embodiment of the present invention; Figure 10 A schematic diagram of another movable clamping mechanism provided as an exemplary embodiment of the present invention; Figure 11 A schematic diagram illustrating the use of another movable clamping mechanism provided as an exemplary embodiment of the present invention; The components include: 1. Handle; 2. Displacement sensor; 3. Positioning groove; 4. Moving crossbeam; 5. Bushing; 6. Guide shaft; 7. Lower limit rod; 8. Ball screw pair; 8.1 Screw; 8.2 Nut; 9. Motor; 10. Reducer; 11. Drive wheel; 12. Belt; 13. Driven wheel; 14. Connecting plate; 15. Upper clamp; 16. Lower clamp; 17. Force sensor; 18. Sensor connector; 19. Top plate; 20. Upper limit rod; 21. Housing; 22. Thrust cylinder; 23. Protective cover; 24. Bottom. 25. Plate; 26. Outer shell; 27. Rotating mechanism; 28. Clamping cylinder; 29. ​​Long slot; 30. Support plate; 31. Drive mechanism; 32. Mounting base; 33. Toggle switch; 34. Support component; 35. First clamping block; 36. Second clamping block; 37. Movable clamping mechanism; 38. Movable component; 39. Tension spring; 40. Handle block; 41. Guide rod; 42. Connecting component; 43. Pin; 44. Torsion spring; 45. Second fixing component; 46. Rotating component; 47. First fixing component; 48. Through slot; 49. Thin film sample. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0055] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0056] In this implementation, a multi-station thin-film electronic tensile testing machine is proposed, such as... Figure 1 and Figure 2 As shown, it includes: a vertical running mechanism, a guiding mechanism, a tensioning mechanism, a top plate 19, and a support plate 29. The vertical running mechanism of this utility model is arranged between the top plate 19 and the support plate 29. At least two tensioning mechanisms are arranged along the circumference of the vertical running mechanism. The guiding mechanism is arranged around the vertical running mechanism. The vertical running mechanism and the guiding mechanism are surrounded by a housing 21. The tensioning mechanism includes a clamp and a force sensor 17 (which displays the change of force value in real time during the test). The clamp includes an upper clamp 15 and a lower clamp 16.

[0057] In this implementation, preferably, the force sensor 17 is connected to the upper clamp 15, and the force sensor 17 is connected to the upper and lower running mechanism after passing through the long slot 28 on the housing via the sensor connector 18; the lower clamp 16 is fixed on the support plate 29, and the entire stretching mechanism can rotate under the drive of the support plate 29 to realize the circumferential position change (the support plate 29 can rotate 360°, which is convenient for multi-position installation of film samples).

[0058] Optionally, in some other implementations, the force sensor is connected to the upper clamp, and the up-and-down running mechanism includes multiple branch beams passing through elongated slots on the housing, with the force sensor connected to the branch beams.

[0059] Optionally, in some other implementations, the force sensor 17 is connected to the lower clamp 16, and the force sensor 17 is fixed to the support plate 29, such as... Figure 3 As shown. The upper clamp is connected to the clamp connector, which passes through the long slot on the housing and connects to the upper and lower running mechanisms.

[0060] Optionally, in some other implementations, the force sensor is connected to the lower clamp and fixed to the support plate, and the up-and-down running mechanism includes multiple branch beams passing through elongated slots on the housing, with the upper clamp connected to the branch beams.

[0061] In this implementation, the preferred method is as follows: Figure 4As shown, the up-and-down operating mechanism includes: a support plate 29, a handle 1, a displacement sensor 2, a moving crossbeam 4, a bushing 5, a guide shaft 6, a lower limit rod 7, a ball screw pair 8, a motor 9, a reducer 10, a drive wheel 11, a belt 12, a driven wheel 13, and a connecting plate 14; wherein, the ball screw pair 8, the motor 9, the reducer 10, the drive wheel 11, the belt 12, and the driven wheel 13 constitute the first up-and-down driving mechanism.

[0062] In this implementation, the support plate 29 preferably adopts a circular structure, with at least one handle 1 on it and a connecting plate 14 at the bottom that is connected to the rotating mechanism 26 (e.g., a rotary support). By holding the handle 1 and rotating it, the support plate 29 can be rotated 360°. The displacement sensor 2 is fixed on the upper part of the support plate 29, and the upper end of the displacement sensor 2 is connected to the moving crossbeam 4, which is located above the support plate 29.

[0063] The outer side of the moving crossbeam 4 is vertically machined with positioning grooves 3 along the circumference. The number of positioning grooves 3 is evenly distributed for each workstation (used to cooperate with the fixture connector of the upper fixture 15 or the protrusion of the sensor connector 18 for positioning and connection). At the same time, three bushings 5 ​​are installed (selected according to the number of guide shafts 6, and three are preferred in this implementation). They are evenly distributed around the center line of the moving crossbeam 4 along the circumference. The three guide shafts 6 pass through the three bushings 5 ​​respectively (forming a triangular positioning). The lower ends of the three guide shafts 6 are fixed on the support plate 29, and the upper ends of the three guide shafts 6 are connected to the top plate 19, forming a stable frame structure.

[0064] Understandably, in some other implementations, multiple branch beams are set on the outer side of the moving crossbeam 4, and the number of branch beams is evenly distributed for each workstation. The branch beams can replace the function of the clamp connector or sensor connector 18 of the upper clamp 15, and realize direct connection with the upper clamp 15 or force sensor 17.

[0065] In this implementation, the main body of the movable crossbeam 4 preferably adopts a circular structure. Here, the main body of the movable crossbeam 4 refers to the main body of the movable crossbeam 4 with the positioning groove 3, or the main body of the movable crossbeam 4 after removing the branch beams.

[0066] In this implementation, the upper limit rod 20 (hard limit, i.e. the first anti-collision mechanism) is set below the top plate 19. When the equipment control system fails, it holds the moving crossbeam 4 to prevent the moving crossbeam 4 from continuing to move upward and causing damage to the equipment. The lower limit rod 7 (i.e. the second anti-collision mechanism) is fixed on the support plate 29 to prevent the moving crossbeam 4 from continuing to descend and damaging the force sensor 17 after the control system fails.

[0067] In this implementation, the ball screw assembly 8 (including the screw 8.1 and the nut 8.2) is installed at the center of the support plate 29. The lower end of the screw 8.1 is connected to the driven wheel 13, and the nut 8.2 is fixed at the center of the moving beam 4. When the screw 8.1 rotates, the nut 8.2 drives the moving beam 4 to move up and down. The motor 9 is connected to the reducer 10, and the drive wheel 11 is fixed to the shaft end of the reducer 10 and connected to the driven wheel 13 through the belt 12. When the motor 9 rotates, it drives the driven wheel 13 to rotate, and the driven wheel 13 is connected to the screw 8.1. Thus, controlling the rotation of the motor 9 can realize the up and down movement of the moving beam 4.

[0068] Preferably, the upper clamp 15 and the lower clamp 16 are pneumatically clamped. Existing and publicly available clamp designs can be used, which will not be elaborated here. During use, as the moving crossbeam 4 moves, the lower clamp 16 is fixed on the support plate 29, thereby enabling the tensile performance testing of the thin film sample.

[0069] In this implementation, the top plate 19 is fixed on the housing 21 and connected to the three guide shafts 6 and the lead screw 8.1 of the ball screw pair 8. The housing 21 is fixed on the support plate 29, and the center of the housing 21 is consistent with the center of the support plate 29. In this way, the support plate 29, the guide shafts 6, the top plate 19 and the housing 21 form a stable structure, which effectively ensures the stability of the up and down movement.

[0070] In this implementation, the housing 21 is a metal shell, preferably with a circular structure, and is provided with elongated grooves 28, which correspond one-to-one with the vertical positioning grooves on the outer side of the moving crossbeam 4. The grooves can be slightly wider to facilitate connecting the sensor connector 18 or the protrusion of the upper clamp 15 to the moving crossbeam 4. In this implementation, preferably, the sensor connector 18 passes through the elongated groove 28 on the housing 21 and connects to the vertical groove of the moving crossbeam 4. The upper end of the force sensor 17 is fixed to the sensor connector 18, and the lower end of the force sensor 17 is connected to the upper clamp 15.

[0071] In this implementation, the thrust cylinder 22 (i.e., the second up-and-down drive mechanism, which can also be a hydraulic cylinder, electric cylinder, gear and rack mechanism, or ball screw mechanism) is fixed to the upper end of the top plate 19, while the protective cover 23 is fixed to the extension shaft of the thrust cylinder 22. Figure 6 As shown, the protective cover 23 can be made of transparent material, such as acrylic, and the whole structure is cylindrical.

[0072] The diameter of the protective cover 23 is the same as that of the support plate 29 (the protective cover 23 can land on the support plate when it falls). When loading the sample, the shaft end of the thrust cylinder 22 extends, driving the protective cover 23 to move upward and expose the tensioning mechanism for easy sample loading. During the test, the shaft end of the thrust cylinder 22 retracts, driving the protective cover 23 to move downward and land on the support plate 29, covering the entire top of the support plate 29 for protection.

[0073] like Figure 5 As shown, the base plate 24 and the outer shell 25 are preferably circular structures. The lower end of the rotating mechanism 26 is fixed at the center of the base plate 24, and the upper end of the rotating mechanism 26 is connected to the connecting plate 14. The clamping cylinder 27 (i.e., the clamping mechanism) is installed on the base plate 24 and can clamp the upper end of the rotating mechanism 26 after the test starts to ensure that the rotating mechanism 26 does not rotate. Alternatively, in some other implementations, the clamping mechanism can also be a hydraulic cylinder, an electric cylinder, a gear and rack mechanism or a ball screw mechanism, which will not be described in detail here.

[0074] The specific working principle of the above-mentioned multi-station thin film electronic tensile testing machine is as follows: First, open the control software on the computer (or controller) and set the gauge lengths of the upper clamp 15 and the lower clamp 16. The initial state of the equipment is that the protective cover 23 is open, the output shaft of the thrust cylinder 22 extends, and the protective cover 23 is raised. Figure 7 As shown, the tensioning mechanism is exposed in this way. The operating control software controls the motor 9 to rotate, which drives the reducer 10 and the drive wheel 11 to rotate. The driven wheel 13 is driven to rotate through the belt 12. The driven wheel 13 is connected to the lead screw, thereby driving the lead screw 8.1 to rotate. The lead screw nut 8.2 is connected to the moving crossbeam 4, thereby converting the rotational motion into the up and down movement of the moving crossbeam 4. The moving crossbeam 4 is connected to several force sensors 17 at several workstations through the sensor connector 18. Each force sensor 17 has an upper clamp 15 installed at its lower end, so the distance between the upper clamp 15 and the lower clamp 16 can be controlled. Next, install the test samples. The tensioning mechanism is evenly arranged around the circumference of the workstation. After installing a film sample on the support plate 29, the handle 1 can be operated to rotate the support plate 29. At least one handle 1 can be set here to facilitate rotating the support plate 29 and installing the film sample until all film samples are clamped. Next, the test conditions are set. When the test begins, the thrust cylinder 22 retracts, causing the protective cover 23 to fall onto the support plate, covering the tensioning mechanism and providing protection. The protective cover 23 also adopts a cylindrical structure with an outer diameter consistent with the support plate. At the same time, the output shaft of the clamping cylinder 27 extends and presses against the rotating mechanism 26 (e.g., a rotary support) or the support plate 29. This ensures that the support plate 29 does not rotate during the test, so as not to affect the test results.

[0075] Optionally, in some other implementations, the structures of the upper clamp 15 and the lower clamp 16 are also improved, specifically, such as Figure 8 and Figure 9 As shown, it includes: mounting base 31, drive mechanism 30, support member 33, first clamping block 34, second clamping block 35 and movable clamping mechanism 36; The drive mechanism 30 and the support member 33 are respectively fixed on the mounting base 31. The second clamping block 35 is fixed on the support member 33. The first clamping block 34 is connected to the output end of the drive mechanism 30. The first clamping block 34 is used to cooperate with the second clamping block 35 to clamp the film sample 48 under the drive of the drive mechanism 30. The movable clamping mechanism 36 includes: a first fixed member 46, a movable member 37, and an elastic member. The first fixed member 46 is fixed on the support member 33 or the mounting base 31. Of course, it is understandable that in some other implementations, the first fixed member 46 can also be integrally formed with the support member 33 or the mounting base 31. The movable part 37 is connected to the first fixed part 46 by an elastic element. The relative position of the movable part 37 and the first fixed part 46 is adjusted by a guide mechanism. The movable part 37 includes a protrusion for cooperating with the support 33 to clamp excess film sample 48.

[0076] Preferably, the output end of the drive mechanism 30 passes through the mounting base 31 and the support member 33 and is connected to the first clamping block 34. The drive mechanism 30 is preferably a cylinder, which is controlled by a toggle switch 32, which is arranged on the mounting base 31. In other implementations, other linear drive mechanisms such as electric cylinders, hydraulic cylinders, or rack and pinion drive mechanisms 30 can also be used.

[0077] Preferably, the clamping surface of the second clamping block 35 is a textured surface, and the clamping surface of the first clamping block 34 is a rubber surface (for example, industrial rubber is pasted on the clamping surface of the first clamping block 34); or, the clamping surface of the second clamping block 35 is a textured surface, and the first clamping block 34 is a rubber block; or, the clamping surface of the second clamping block 35 is a rubber surface, and the clamping surface of the first clamping block 34 is a textured surface; it is understood that the first clamping block 34 and the second clamping block 35 can also adopt other anti-slip arrangements, as long as anti-slip clamping blocks are used; it is also possible that one clamping block is an anti-slip design, while the other clamping block adopts a conventional design, which will not be elaborated here.

[0078] The elastic element is a tension spring 38 (two tension springs 38 distributed vertically). Connecting elements 41 (for connecting the tension springs 38) are arranged on both the movable element 37 and the first fixed element 46. It is understood that in some other implementations, the elastic element can also be a rubber elastic element or a plastic elastic element, as long as it has a certain elasticity, so that the entire movable element 37 can be pulled away from the first fixed element 46 and can retract under the action of elasticity. This will not be elaborated here.

[0079] The guiding mechanism includes a guide rod 40 (the guide rod 40 is connected to the first fixing member 46, or is integrally formed with the first fixing member 46), and the movable member 37 has a through slot 47 for the guide rod 40 to be inserted. In this implementation, a cuboid pull block is preferably used as the guide rod 40. It is understood that in some other implementations, the guide rod 40 can also be a round rod or a rod of other shapes, as long as it can cooperate with the through slot 47 to achieve the guiding function.

[0080] Optionally, the guide mechanism includes a slide rail, and a slider is connected to the movable part 37, with the slider being movably connected to the slide rail; or, the guide mechanism includes a slide rail, and a pulley is connected to the movable part 37, with the pulley being movably connected to the slide rail; those skilled in the art can select the guide mechanism according to the specific working conditions, as long as it can ensure that the relative position between the movable part 37 and the first fixed part 46 is adjusted by the guide mechanism, which will not be elaborated here.

[0081] The handle block 39 is installed on the movable part 37. The handle block 39 is designed with an arc surface. Pulling the handle block 39 by hand will cause the movable part 37 to extend and retract along the guide rod 40.

[0082] Preferably, the support member 33 is a U-shaped member, and the second clamping block 35 is fixed on one side wall of the U-shaped member (for example, a notch is made on one inner side wall of the U-shaped member, and the second clamping block 35 is fixed on the notch). The first clamping block 34 cooperates with the second clamping block 35 in the internal space of the U-shaped member to clamp the film sample 48. It should be noted that the U-shaped member here means that the horizontal cross-section is U-shaped and the U-shaped member is arranged horizontally.

[0083] The working principle of the above-mentioned fixture is as follows: Two sets of the above-mentioned film clamps are used as the upper clamp and the lower clamp, respectively. (Note that when used as the upper clamp, the second clamping block 35 is fixed to the upper end of one side wall of the U-shaped part; when used as the lower clamp, the second clamping block 35 is fixed to the lower end of one side wall of the U-shaped part.) The distance between the upper clamp and the lower clamp is set, and a sample of a certain length is cut. Hold the upper end of the sample with one hand and the lower end of the sample with the other hand, and place it between the first clamping block 34 and the second clamping block 35. Operate the toggle switch 32 to extend the output shaft of the cylinder (i.e., the drive mechanism 30), which drives the first clamping block 34 to clamp the film sample 48. The upper and lower ends of the sample are clamped by the upper clamp and the lower clamp, respectively. The second clamping block 35 is a textured block, and the front end of the first clamping block 34 (i.e., the end opposite to the textured block) is attached with industrial rubber. In this way, the sample is actually clamped by the rubber and the textured block, thereby increasing the coefficient of friction with the sample and preventing the sample from slipping during the test.

[0084] After the sample is properly clamped, operate the handle block 39 to pull the movable part 37 out along the guide rod 40. This will create a certain gap between the protrusion of the movable part 37 and the support 33. At this time, bend the excess length of the sample and place it into the gap. Then, under the action of the tension spring 38, the movable part 37 retracts and clamps the excess part of the sample again through the protrusion. This increases the bending force of the sample, thereby realizing secondary clamping of the sample and making the anti-slip more reliable.

[0085] like Figure 10 and Figure 11 As shown, the movable clamping mechanism 36 includes: a second fixing member 44, a rotating member 45 and a torsion spring 43. The second fixing member 44 is fixed on the support member 33 or the mounting base 31. It can be understood that in some other implementations, the second fixing member 44 can also be integrally formed with the support member 33 or the mounting base 31. The rotating member 45 and the second fixed member 44 are connected by a pin 42. A torsion spring 43 is sleeved on the pin 42. One end of the torsion spring 43 is connected to the rotating member 45, and the other end is connected to the second fixed member 44. The rotating member 45 includes a protrusion for cooperating with the support member 33 to clamp excess film sample 48. In use, both ends of the torsion spring 43 contact the rotating member 45 and the second fixed member 44, generating torque, causing the rotating member 45 to press against the outside of the support member 33, thereby pressing the bent film sample 48. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-station thin film electronic tensile testing machine, characterized in that, include: Upward and downward running mechanism, guiding mechanism, tensioning mechanism, top plate and support plate; The vertical running mechanism is arranged between the top plate and the support plate. At least two tensioning mechanisms are arranged along the circumferential direction of the vertical running mechanism. The guiding mechanism is arranged around the vertical running mechanism. The guiding mechanism is surrounded by a housing. The tensile mechanism includes a clamp and a force sensor for detecting tensile force. The clamp includes an upper clamp and a lower clamp for clamping the sample.

2. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, At least two elongated slots corresponding to the number of stretching mechanisms are distributed in the middle of the housing, and the stretching mechanisms can move up and down within the elongated slots.

3. The multi-station thin film electronic tensile testing machine as described in claim 2, characterized in that, The force sensor is connected to the upper clamp and the force sensor is connected to the sensor connector. The sensor connector passes through the elongated groove on the housing and is connected to the upper and lower running mechanism. The lower clamp is fixed on the support plate. The tensioning mechanism can rotate under the drive of the support plate to realize the circumferential position change.

4. The multi-station thin film electronic tensile testing machine as described in claim 2, characterized in that, The force sensor is connected to the upper clamp, the up-and-down running mechanism includes multiple branch beams passing through the elongated groove on the housing, the force sensor is connected to the branch beams, the lower clamp is fixed on the support plate, and the tensioning mechanism can rotate under the drive of the support plate to achieve circumferential position changes.

5. The multi-station thin film electronic tensile testing machine as described in claim 2, characterized in that, The force sensor is connected to the lower clamp and fixed on the support plate. The upper clamp is connected to the clamp connector. The clamp connector passes through the long slot on the housing and is connected to the upper and lower running mechanism. The tensioning mechanism can rotate under the drive of the support plate to realize the circumferential position change.

6. The multi-station thin film electronic tensile testing machine as described in claim 2, characterized in that, The force sensor is connected to the lower clamp and fixed to the support plate. The up-and-down running mechanism includes multiple branch beams passing through the long groove on the housing. The upper clamp is connected to the branch beams. The tensioning mechanism can rotate under the drive of the support plate to achieve circumferential position changes.

7. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, The bottom of the support plate is connected to the rotating mechanism, which is fixed to the base plate.

8. The multi-station thin film electronic tensile testing machine as described in claim 7, characterized in that, The rotating mechanism is connected to the center of the support plate, and the base plate is a circular plate.

9. The multi-station thin film electronic tensile testing machine as described in claim 7, characterized in that, The support plate is a circular plate.

10. The multi-station thin film electronic tensile testing machine as described in claim 7, characterized in that, A handle is attached to the support plate.

11. The multi-station thin film electronic tensile testing machine as described in claim 7, characterized in that, A clamping mechanism is arranged on the base plate. The output end of the clamping mechanism is used to press against the rotating mechanism or the support plate when it is extended, so that the support plate does not rotate during the test.

12. The multi-station thin film electronic tensile testing machine as described in claim 11, characterized in that, The clamping mechanism is a pneumatic cylinder, hydraulic cylinder, electric cylinder, gear and rack mechanism, or ball screw mechanism.

13. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, The up-and-down operating mechanism includes a movable crossbeam and a first up-and-down driving mechanism. The movable crossbeam is connected to the first up-and-down driving mechanism and can move up and down under the drive of the first up-and-down driving mechanism. The outer end face of the movable crossbeam is provided with multiple positioning grooves; or, the outer end face of the movable crossbeam is provided with multiple branch beams.

14. The multi-station thin film electronic tensile testing machine as described in claim 13, characterized in that, The main body of the movable crossbeam is a circular plate.

15. The multi-station thin film electronic tensile testing machine as described in claim 13, characterized in that, The first up-and-down driving mechanism is fixed on the support plate.

16. The multi-station thin film electronic tensile testing machine as described in claim 13, characterized in that, The first up-and-down driving mechanism includes a lead screw, a lead screw nut, a motor, a reducer, a driving wheel, and a driven wheel. The driven wheel is connected to the lower end of the lead screw. The motor is connected to the reducer. The driving wheel is fixed to the end of the reducer shaft. The driving wheel is connected to the driven wheel via a belt. The lead screw nut is fixed at the center of the moving crossbeam. When the motor drives the lead screw to rotate, the lead screw nut drives the moving crossbeam to move up and down.

17. The multi-station thin film electronic tensile testing machine as described in claim 13, characterized in that, The guiding mechanism includes at least three guide shafts, each of which is evenly arranged circumferentially with the center of the moving crossbeam as the center.

18. The multi-station thin film electronic tensile testing machine as described in claim 17, characterized in that, The guide shaft passes through the movable crossbeam via a bushing.

19. The multi-station thin film electronic tensile testing machine as described in claim 13, characterized in that, It also includes a displacement sensor, one end of which is fixed to the support plate and the other end of which is fixed to the movable crossbeam.

20. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, The shell has a circular cross-section.

21. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, A second up-and-down driving mechanism is installed on the upper part of the top plate. The output end of the second up-and-down driving mechanism is connected to the protective cover, which is used to be arranged around the periphery of the housing.

22. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, The top surface of the upper clamp is provided with a groove for positioning and connecting with a force sensor; the bottom surface of the lower clamp is provided with a boss for positioning and connecting with a support plate.

23. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, A first anti-collision mechanism is arranged below the top plate, and a second anti-collision mechanism is arranged above the support plate.

24. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, The upper clamp and / or the lower clamp include: Mounting base, drive mechanism, support component, first clamping block, second clamping block, and movable clamping mechanism; The drive mechanism and the support are fixed on the mounting base respectively. The second clamping block is fixed on the support. The first clamping block is connected to the output end of the drive mechanism. The first clamping block is used to cooperate with the second clamping block to clamp the film sample under the drive of the drive mechanism. The movable clamping mechanism includes: a first fixed member, a movable member, and an elastic member. The first fixed member is fixed on the support member or the mounting base, or the first fixed member is integrally formed with the support member or the mounting base. The movable part is connected to the first fixed part by an elastic element. The relative position between the movable part and the first fixed part is adjusted by a guide mechanism. The movable part includes a protrusion for cooperating with the support to clamp excess film sample.

25. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, At least one of the clamping surfaces of the first clamping block and the second clamping block is an anti-slip surface.

26. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The output end of the drive mechanism passes through the mounting base and support and is connected to the first clamping block.

27. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The guiding mechanism includes a guide rod, and the movable part has a through slot for inserting the guide rod.

28. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The guiding mechanism includes a slide rail, and a slider is connected to the moving part. The slider is movably connected to the slide rail.

29. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The guiding mechanism includes a slide rail, and a pulley is connected to the movable part, with the pulley being movably connected to the slide rail.

30. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The support is a U-shaped component. The second clamping block is fixed on one side wall of the U-shaped component, and the first clamping block cooperates with the second clamping block in the internal space of the U-shaped component to clamp the film sample.

31. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The driving mechanism is a pneumatic cylinder, electric cylinder, hydraulic cylinder, or rack and pinion drive mechanism.

32. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The movable part is connected to a handle block.

33. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The movable part has a handle block integrally molded on it.

34. The multi-station thin film electronic tensile testing machine as described in claim 24, characterized in that, The elastic element is a tension spring, a rubber elastic element, or a plastic elastic element.

35. The multi-station thin film electronic tensile testing machine as described in claim 1, characterized in that, The upper clamp and / or the lower clamp include: a mounting base, a drive mechanism, a support member, a first clamping block, a second clamping block, and a movable clamping mechanism; The drive mechanism and the support are fixed on the mounting base respectively. The second clamping block is fixed on the support. The first clamping block is connected to the output end of the drive mechanism. The first clamping block is used to cooperate with the second clamping block to clamp the film sample under the drive of the drive mechanism. The movable clamping mechanism includes: a second fixed member, a rotating member, and a torsion spring. The second fixed member is fixed on the support member or the mounting base, or the second fixed member is integrally formed with the support member or the mounting base. The rotating component and the second fixed component are connected by a pin. A torsion spring is sleeved on the pin. One end of the torsion spring is connected to the rotating component, and the other end of the torsion spring is connected to the second fixed component. The rotating component includes a protrusion for cooperating with the support to clamp excess film sample.

36. The multi-station thin film electronic tensile testing machine as described in claim 35, characterized in that, The output end of the drive mechanism passes through the mounting base and support and is connected to the first clamping block.

37. The multi-station thin film electronic tensile testing machine as described in claim 35, characterized in that, At least one of the clamping surfaces of the first clamping block and the second clamping block is an anti-slip surface.

38. The multi-station thin film electronic tensile testing machine as described in claim 35, characterized in that, The support is a U-shaped component. The second clamping block is fixed on one side wall of the U-shaped component, and the first clamping block cooperates with the second clamping block in the internal space of the U-shaped component to clamp the film sample.

39. The multi-station thin film electronic tensile testing machine as described in claim 35, characterized in that, The driving mechanism is a pneumatic cylinder, electric cylinder, hydraulic cylinder, or rack and pinion drive mechanism.

40. The multi-station thin film electronic tensile testing machine as described in claim 35, characterized in that, A handle block is connected to the rotating part.

41. The multi-station thin film electronic tensile testing machine as described in claim 35, characterized in that, A handle block is integrally formed on the rotating part.

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