Thin film tensile test device
By designing a film tensile testing device using clamping components and moving components, the problems of uneven films and needing cutting in existing devices are solved, and the flatness state and test time of the film during the tensile process are shortened.
Patent Information
- Application Number
- CN202421770054.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The existing film tensile testing device cannot ensure the flat state of the film after clamping the film, resulting in the film being subjected to a force in the vertical tensile direction during the tensile process, which affects the accuracy of the test. The film needs to be cut to adapt to the distance of the fixture, which extends the test time.
A film tensile testing device is designed, adopting a clamping assembly and a moving assembly. The clamping assembly clamps the film through a rotatable threaded member and a fixed block. The moving assembly moves the clamping member relatively through the drive member and the rotating member to achieve stretching of the film without cutting.
The device can clamp both ends of the film without cutting it, ensuring that the film remains flat during the stretching process, improving the accuracy and efficiency of the test.
Smart Images
Figure CN222979280U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film tensile test, in particular to a film stretching test device. Background Art
[0002] As a common material in daily life, films are applied in various fields. In order to detect the quality of films, film stretching tests are carried out on the films.
[0003] The film stretching test is a basic method for testing the mechanical properties of films and is used to determine the characteristics of films under tensile loads. The film stretching test is a test in which a tensile load is applied to the film under specified test temperature, humidity and stretching speed. When the tensile force is greater than the intermolecular force in the film, the molecular chains will break or slip relative to each other, and the macroscopic manifestation is the fracture or deformation of the film.
[0004] Furthermore, a film stretching test device is required for the film stretching test. Its basic principle is to fix the two end parts of the film respectively, set a tensile force sensor at one end of the film and pull one end of the film so that the two end parts of the film move relatively away from each other. Under the monitoring of the tensile force sensor, the characteristics of the film under tensile load are obtained through a controller.
[0005] For the existing film stretching test device, clamps are needed to clamp and fix the two ends of the film. When the length of the film is greater than the distance between the clamps, the film needs to be cut to a length that can be clamped by the clamps and stretched first, and then the two end parts of the film are clamped by the clamps. However, the operation of cutting the film will prolong the time required for the film stretching test.
[0006] Furthermore, for the existing film stretching test device, after the two end parts of the film are clamped by the clamps, it is impossible to determine that the film located between the clamps needs to be in a relatively flat state, resulting in the film being distorted after being clamped, so that during the process of stretching the film, the film is subjected to a force perpendicular to the stretching direction, affecting the accuracy of the test. Summary of the Utility Model
[0007] To solve the above technical problems and achieve at least one advantage of the present utility model, the present utility model provides a film stretching test device, wherein the film stretching test device includes:
[0008] A device main body;
[0009] Clamping assembly, the clamping assembly includes at least one connecting member, a first fixing member, a first clamping member corresponding to the first fixing member, a second fixing member and a second clamping member corresponding to the second fixing member. The connecting member includes a fixed connecting piece and a rotating connecting piece. The first fixing member includes a first mounting portion, a first connecting portion and a first clamping portion. The first clamping member includes a first threaded piece and a first fixing block. The first clamping portion is connected to the first mounting portion through the first connecting portion. The fixed connecting piece of one of the connecting members is arranged on the device body, the other of the connecting members is arranged on the first mounting portion, and one of the fixed connecting pieces is rotatably arranged on one of the rotating connecting pieces. A first extending groove and a first extending opening communicating with the first extending groove are formed between the first mounting portion, the first connecting portion and the first clamping portion. The first clamping portion has a first clamping space and a first connecting through hole. The first clamping space communicates with the first extending groove. The first threaded piece is movably arranged in the first connecting through hole of the first clamping portion. The first fixing block is connected to the end of the first threaded piece and is located in the first clamping space to clamp one end of the piece to be pulled in the first clamping space through the first fixing block. The second fixing member is arranged opposite to the first fixing member, and the second clamping member is arranged on the second fixing member. The second clamping member is used to clamp the other end of the piece to be pulled on the second fixing member;
[0010] Moving assembly, the moving assembly is arranged on the device body. The moving assembly is used to pull the second fixing member away from the first fixing member to stretch the piece to be pulled; and
[0011] Detection assembly, the detection assembly includes a monitoring member. The monitoring member is arranged on the clamping assembly. The monitoring member is used to monitor the magnitude of the tensile force received by the piece to be pulled during the stretching process.
[0012] According to an embodiment of the present invention, the moving assembly includes a driving member, a rotating member, at least one limiting member and a moving member. The driving member and the limiting member are both installed on the device body. The rotating member is rotatably and coaxially connected to the output end of the driving member. The extending direction of the rotating member is the direction that can pull the second fixing member away from the first fixing member. The surface of the rotating member has a thread along the extending direction. The moving member has a through hole matching the thread on the surface of the rotating member. The rotating member movably penetrates through the moving member. The moving member has a sliding through hole matching the limiting member. The moving member is movably arranged on the limiting member through the sliding through hole.
[0013] According to an embodiment of the present utility model, the second fixing member includes a second mounting portion, a second connecting portion, and a second clamping portion. The second clamping member includes a second threaded member and a second fixing block. The second clamping portion is connected to the second mounting portion through the second connecting portion. The second mounting portion is disposed on the moving member. The second clamping portion has a second clamping space and a second connecting through hole. The second threaded member is movably disposed in the second connecting through hole of the second clamping portion. The second fixing block is connected to the end of the second threaded member and is located in the second clamping space. A stretching space for stretching the workpiece to be stretched is formed between the second clamping portion and the first clamping portion.
[0014] According to an embodiment of the present utility model, the second fixing member includes a second mounting portion, a second connecting portion, and a second clamping portion. The second clamping member includes a second threaded member and a second fixing block. The second clamping portion is connected to the second mounting portion through the second connecting portion. The fixed connecting member of another connecting member is disposed on the moving member. The rotating connecting member of another connecting member is disposed on the second mounting portion. Another fixed connecting member is rotatably disposed on another rotating connecting member. The second clamping portion has a second clamping space and a second connecting through hole. The second threaded member is movably disposed in the second connecting through hole of the second clamping portion. The second fixing block is connected to the end of the second threaded member and is located in the second clamping space. A stretching space for stretching the workpiece to be stretched is formed between the second clamping portion and the first clamping portion.
[0015] According to an embodiment of the present utility model, a second protruding groove and a second protruding opening communicating with the second protruding groove are formed between the second mounting portion, the second connecting portion, and the second clamping portion. The second clamping space communicates with the second protruding groove.
[0016] According to an embodiment of the present utility model, the detection assembly further includes a display control member. The monitoring member is electrically connected to the display control member. The display control member is disposed on the device main body. The display control member is used to display the data monitored by the monitoring member in real time.
[0017] According to an embodiment of the present utility model, the detection assembly further includes a distance measuring member. The distance measuring member is mounted on the clamping assembly. The distance measuring member is used to measure the distance by which the workpiece to be stretched is stretched.
[0018] According to an embodiment of the present utility model, the limiting member has a displacement display member. The displacement display member is used to intuitively display the distance by which the moving member moves along the extending direction of the limiting member.
[0019] According to an embodiment of the present utility model, the film stretching test device further includes a stop member for cutting off the power supply to the driving member.
[0020] According to an embodiment of the present utility model, the monitoring member is implemented to include a tensile and compressive force sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A perspective view schematic diagram showing an embodiment of a preferred embodiment of the present utility model.
[0022] Figure 2 Shows Figure 1 An enlarged view schematic diagram of part A in
[0023] Figure 3 Shows Figure 1 An enlarged view schematic diagram of part B in
[0024] Figure 4 A perspective view schematic diagram of the moving component is shown.
[0025] Figure 5 A perspective view schematic diagram showing another embodiment of a preferred embodiment of the present utility model.
[0026] Figure 6 Shows Figure 5 An enlarged view schematic diagram of part C in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present utility model can be applied to other implementation schemes, variation schemes, improvement schemes, equivalent schemes, and other technical schemes without departing from the spirit and scope of the present utility model.
[0028] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.
[0029] It will be understood that the term "a" should be construed as "at least one" or "one or more". That is, in one embodiment, the number of an element may be one, while in other embodiments, the number of the element may be plural. The term "a" should not be construed as a limitation on the number.
[0030] Reference Figures 1 to 6 , the film stretching test device according to a preferred embodiment of the present utility model will be described in detail below, wherein the film stretching test device includes a device main body 10, a clamping assembly 20 and a moving assembly 30.
[0031] The clamping assembly 20 includes at least one connecting member 21, a first fixing member 22 and a first clamping member 23 corresponding to the first fixing member 22. The connecting member 21 includes a fixed connecting piece 211 and a rotating connecting piece 212. The first fixing member 22 includes a first mounting portion 221, a first connecting portion 222 and a first clamping portion 223. The first clamping member 23 includes a first threaded member 231 and a first fixing block 232. The first clamping portion 223 is connected to the first mounting portion 221 through the first connecting portion 222. The fixed connecting piece 211 of one of the connecting members 21 is disposed on the device main body 10, the one of the connecting members 21 is disposed on the first mounting portion 221, and one of the fixed connecting pieces 211 is rotatably disposed on one of the rotating connecting pieces 212. A first protruding groove 2201 and a first protruding opening 2202 communicating with the first protruding groove 2201 are formed between the first mounting portion 221, the first connecting portion 222 and the first clamping portion 223. The first clamping portion 223 has a first clamping space 22301 and a first connecting through hole. The first clamping space 22301 communicates with the first protruding groove 2201. The first threaded member 231 is movably disposed in the first connecting through hole of the first clamping portion 223. The first fixing block 232 is connected to the end of the first threaded member 231 and is located in the first clamping space 22301.
[0032] It is worth mentioning that by rotating the first threaded member 231 in the first connecting through hole of the first clamping portion 223, the first fixing block 232 will press one end of a workpiece to be stretched 91 against the first clamping portion 223 to fix one end of the workpiece to be stretched 91.
[0033] The clamping assembly 20 further includes a second fixing member 24 and a second clamping member 25 corresponding to the second fixing member 24. The second fixing member 24 and the first fixing member 22 are arranged oppositely. The moving assembly 30 is configured to pull the second fixing member 24 and the second clamping member 25 away from the first fixing member 22.
[0034] Specifically, the moving assembly 30 includes a driving member 31, a rotating member 32, at least one limiting member 33, and a moving member 34. The driving member 31 and the limiting member 33 are both mounted on the device body 10. The rotating member 32 is rotatably and coaxially connected to the output end of the driving member 31. The extending direction of the rotating member 32 is the direction in which the second fixing member 24 can be pulled away from the first fixing member 22. The surface of the rotating member 32 has a thread along the extending direction, and the moving member 34 has a through hole matching the thread on the surface of the rotating member 32, so that the rotating member 32 can pass through the moving member 34 movably. The moving member 34 has a sliding through hole matching the limiting member 33, so that the moving member 34 is movably arranged on the limiting member 33 through the sliding through hole.
[0035] In this embodiment, the second fixing member 24 includes a second mounting portion 241, a second connecting portion 242, and a second clamping portion 243. The second clamping member 25 includes a second threaded member 251 and a second fixing block 252. The second clamping portion 243 is connected to the second mounting portion 241 through the second connecting portion 242. The second mounting portion 241 is arranged on the moving member 34 to move along with the moving member 34. The second clamping portion 243 has a second clamping space 24301 and a second connecting through hole. The second threaded member 251 is movably arranged in the second connecting through hole of the second clamping portion 243. The second fixing block 252 is connected to the end of the second threaded member 251 and is located in the second clamping space 24301. A stretching space 201 for stretching the workpiece 91 to be pulled is formed between the second clamping portion 243 and the first clamping portion 223.
[0036] In another variant embodiment, the second fixing member 24 includes the second mounting portion 241, the second connecting portion 242, and the second clamping portion 243. The second clamping member 25 includes the second threaded member 251 and the second fixing block 252. The second clamping portion 243 is connected to the second mounting portion 241 through the second connecting portion 242. The fixing connection member 211 of another connecting member 21 is disposed on the moving member 34, the rotating connection member 212 of another connecting member 21 is disposed on the second mounting portion 241, and another fixing connection member 211 is rotatably disposed on another rotating connection member 212. The second clamping portion 243 has the second clamping space 24301 and the second connecting through hole. The second threaded member 251 is movably disposed in the second connecting through hole of the second clamping portion 243. The second fixing block 252 is connected to the end of the second threaded member 251 and is located in the second clamping space 24301. A stretching space 201 for stretching the member to be stretched 91 is formed between the second clamping portion 243 and the first clamping portion 223.
[0037] Preferably, a second protruding groove 2401 and a second protruding opening 2402 communicating with the second protruding groove 2401 are formed between the second mounting portion 241, the second connecting portion 242, and the second clamping portion 243. The second clamping space 24301 communicates with the second protruding groove 2401.
[0038] It is worth mentioning that by rotating the second threaded member 251 in the second connecting through hole of the second clamping portion 243, the second fixing block 252 will press the other end of the member to be stretched 91 against the second clamping portion 243 to fix the other end of the member to be stretched 91.
[0039] Those skilled in the art can understand that when the length of the stretching space 201 between the second clamping portion 243 and the first clamping portion 223 is greater than the length of the member to be stretched 91, and one end of the member to be stretched 91 is clamped in the first clamping space 22301, the end of the member to be stretched 91 that is longer than the length of the stretching space 201 can extend into the first protruding groove 2201 and protrude from the first protruding opening 2202 through the first protruding groove 2201. When the other end of the member to be stretched 91 is clamped in the second clamping space 24301, the end of the member to be stretched 91 that is longer than the length of the stretching space 201 can extend into the second protruding groove 2401 and protrude from the second protruding opening 2402 through the second protruding groove 2401. Finally, the purpose of clamping both ends of the member to be stretched 91 without cutting the member to be stretched 91 is achieved.
[0040] It should be noted that when both ends of the workpiece 91 to be stretched are respectively clamped in the first clamping space 22301 and the second clamping space 24301 and stretched, the workpiece 91 in the stretching space 201 needs to maintain a tight planar state. When both ends of the workpiece 91 are respectively clamped in the first clamping space 22301 and the second clamping space 24301 and are skewed, during the process of stretching the workpiece 91, the workpiece 91 in the stretching space 201 will not be able to maintain a tight planar state, and the workpiece 91 in the stretching space 201 will be subjected to a force perpendicular to the stretching direction of the workpiece 91, causing the workpiece 91 to be stretched too fast or too slowly and broken, ultimately affecting the stretching test of the workpiece 91.
[0041] It is worth mentioning that since the rotating connector 212 of one of the connecting members 21 rotatably connects the first mounting portion 221 to the fixed connector 211 located on the moving member 34, and the rotating connector 212 of the other connecting member 21 rotatably connects the second mounting portion 241 to the fixed connector 211 located on the device main body 10, during the process of stretching the workpiece 91, relative rotation will occur between the first fixing member 22 and the second fixing member 24, so that the plane of the workpiece 91 in the stretching space 201 remains in a tight state, ensuring the success of the stretching test of the workpiece 91.
[0042] The film stretching test device further includes a detection component 40, and the detection component 40 includes a monitoring member 41 and a display control member 42. The monitoring member 41 is disposed on the clamping component 20, and the monitoring member 41 is used to monitor the magnitude of the tensile force received by the workpiece 91 during the stretching process. The monitoring member 41 is electrically connected to the display control member 42. The display control member 42 is disposed on the device main body 10 to display the data monitored by the monitoring member 41 in real time.
[0043] Preferably, the monitoring member 41 is implemented to include a tensile and compressive force sensor.
[0044] In this embodiment, the detection component 40 further includes a distance measuring member 43. The distance measuring member 43 is installed on the clamping component 20. The distance measuring member 43 is used to measure the stretching distance of the workpiece 91 to judge the stretching characteristics of the workpiece 91.
[0045] In another variant embodiment, the distance measuring member 43 is installed on the moving member 34.
[0046] In still another variant embodiment, the distance measuring member 43 is installed on the device main body 10.
[0047] The distance measuring member 43 is implemented to include a distance sensor.
[0048] Preferably, the limiting member 33 has a displacement display member 331. The displacement display member 331 is used to visually display the distance that the moving member 34 moves along the extending direction of the limiting member 33.
[0049] The displacement display member 331 is implemented to include a scale bar.
[0050] Those skilled in the art can understand that the displacement display member 331 can prevent errors in the data measured by the distance measuring member 43, so as to visually observe the distance that the moving member 34 drives the second fixing member 24 to move through the displacement display member.
[0051] It should be noted that when the 91 is stretched to a predetermined length and broken, the driving member 31 will immediately stop driving the rotating member 32 to rotate, so that the moving member 34 immediately stops moving.
[0052] Preferably, the film stretching test device further includes a stop member 50. The stop member 50 is used to manually cut off the power supply of the driving member 31 when the driving member 31 cannot be controlled to stop driving by the display control member 42.
[0053] It is worth mentioning that in an embodiment of the present invention, after both ends of the member to be stretched 91 are respectively clamped in the first clamping space 22301 and the second clamping space 24301, the driving member 31 drives the rotating member 32 to rotate, and under the restriction of the limiting member 33, the moving member 34 moves along a predetermined direction, so that the second clamping portion 243 moves away from the first clamping portion 223, stretches and breaks the member to be stretched 91. Under the monitoring of the monitoring member 41 and the distance measurement of the distance measuring member 43, the tensile force and the stretched length received by the member to be stretched 91 are recorded in real time, and the data obtained by the monitoring member 41 and the distance measuring member 43 are displayed in real time through the display control member 42, so as to achieve the purpose of detecting the characteristics of the member to be stretched 91.
[0054] Further, in another embodiment of the present utility model, the member to be pulled 91 is adhered to an adhering member 92 by an adhesive. The end of the member to be pulled 91 that is not adhered to the adhering member 92 is clamped in the first clamping space 22301, and the end of the adhering member 92 that is not adhered to the member to be pulled 91 is clamped in the second clamping space 24301. Then, the driving member 31 drives the rotating member 32 to rotate, and under the restriction of the limiting member 33, the moving member 34 moves along a predetermined direction, so that the second clamping portion 243 moves away from the first clamping portion 223, pulling the member to be pulled 91 away from the adhering member 92. Under the monitoring of the monitoring member 41, the tensile force received by the member to be pulled 91 is recorded in real time, and the data monitored by the monitoring member 41 is displayed in real time through the display control member 42, so as to obtain the adhesion property of the member to be pulled 91 after applying the adhesive.
[0055] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The advantages of the present utility model have been fully and effectively realized. The functions and structural principles of the present utility model have been shown and described in the embodiments. Without departing from the above principles, the embodiments of the present utility model can have any deformation or modification.
Claims
1. Film tensile testing device, characterized in that: The film tensile testing device comprises: Device body; A clamping assembly, the clamping assembly comprising at least one connecting member, a first fixing member, a first clamping member corresponding to the first fixing member, a second fixing member and a second clamping member corresponding to the second fixing member, the connecting member comprising a fixed connecting piece and a rotating connecting piece, the first fixing member comprising a first mounting portion, a first connecting portion and a first clamping portion, the first clamping member comprising a first threaded member and a first fixing block, the first clamping portion being connected to the first mounting portion via the first connecting portion, the fixed connecting piece of one of the connecting members being arranged on the device body, the first connecting piece of one of the connecting members being arranged on the first mounting portion, the fixed connecting piece of one of the rotating connecting pieces being rotatably arranged on one of the rotating connecting pieces, and the first A first extension groove and a first extension port communicated with the first extension groove are formed between a mounting portion, the first connecting portion and the first clamping portion, the first clamping portion has a first clamping space and a first connecting through hole, the first clamping space is communicated with the first extension groove, the first threaded member is movably arranged in the first connecting through hole of the first clamping portion, the first fixing block is connected to the end of the first threaded member and is located in the first clamping space, so that one end of the to-be-pulled member is clamped in the first clamping space through the first fixing block, the second fixing member is arranged opposite to the first fixing member, the second clamping member is arranged in the second fixing member, and the second clamping member is used to clamp the other end of the to-be-pulled member in the second fixing member; a moving component, the moving component being disposed on the device body, and the moving component being used to pull the second fixing member away from the first fixing member to stretch the member to be pulled; and The detection component includes a monitoring component, which is arranged on the clamping component and is used to monitor the magnitude of the pulling force applied to the member to be pulled during the stretching process.
2. The film tensile testing device according to claim 1, characterized in that: The moving component includes a driving member, a rotating member, at least one limiting member and a moving member, the driving member and the limiting member are both installed on the device body, the rotating member is rotatably coaxially connected to the output end of the driving member, the extending direction of the rotating member is the direction in which the second fixed member can be pulled away from the first fixed member, the surface of the rotating member has a thread along the extending direction, the moving member has a through hole matching the thread on the surface of the rotating member, the rotating member movably passes through the moving member, the moving member has a sliding through hole matching the limiting member, and the moving member is movably set on the limiting member through the sliding through hole.
3. The film tensile testing device according to claim 2, characterized in that: The second fixing member includes a second mounting portion, a second connecting portion and a second clamping portion, the second clamping member includes a second threaded member and a second fixing block, the second clamping portion is connected to the second mounting portion via the second connecting portion, the second mounting portion is arranged on the movable member, the second clamping portion has a second clamping space and a second connecting through hole, the second threaded member is movably arranged in the second connecting through hole of the second clamping portion, the second fixing block is connected to the end of the second threaded member and is located in the second clamping space, and a stretching space for stretching the member to be pulled is formed between the second clamping portion and the first clamping portion.
4. The film tensile testing device according to claim 2, characterized in that: The second fixing member includes a second mounting portion, a second connecting portion and a second clamping portion, the second clamping member includes a second threaded member and a second fixing block, the second clamping portion is connected to the second mounting portion via the second connecting portion, the fixed connecting member of another connecting member is arranged on the movable member, the rotating connecting member of another connecting member is arranged on the second mounting portion, the other fixed connecting member is rotatably arranged on the other rotating connecting member, the second clamping portion has a second clamping space and a second connecting through hole, the second threaded member is movably arranged in the second connecting through hole of the second clamping portion, the second fixing block is connected to the end of the second threaded member and is located in the second clamping space, and a stretching space for stretching the member to be pulled is formed between the second clamping portion and the first clamping portion.
5. The film tensile testing device according to claim 4, characterized in that: A second extension groove and a second extension opening communicated with the second extension groove are formed between the second mounting portion, the second connecting portion and the second clamping portion, and the second clamping space is communicated with the second extension groove.
6. The film tensile testing device according to claim 5, characterized in that: The detection component also includes a display control component, the monitoring component is electrically connected to the display control component, the display control component is arranged on the device body, and the display control component is used to display the data monitored by the monitoring component in real time.
7. The film tensile testing device according to claim 6, characterized in that: The detection assembly further comprises a distance measuring member, which is mounted on the clamping assembly and is used to measure the distance that the to-be-pulled member is stretched.
8. The film tensile testing device according to claim 6 or 7, characterized in that: The limiting member has a displacement display member, and the displacement display member is used to visually display the distance moved by the moving member along the extension direction of the limiting member.
9. The film tensile testing device according to claim 8, characterized in that: The film tensile testing device further comprises a stopper, which is used to cut off the power supply to the driving member.
10. The film tensile testing device according to claim 9, characterized in that: The monitoring component is implemented to include a tension and pressure sensor.