Clamp device and tension tester with same

Abstract

The utility model provides a clamp device and a tension testing machine with the same, the clamp device comprises: a clamping structure, the clamping structure comprises a plurality of clamping parts, the plurality of clamping parts can be arranged close to and far away from each other so as to clamp or loosen a target object; the driving structure comprises a driving part, and the driving part is movably arranged in the preset direction; the multi-connecting-rod structure comprises a plurality of connecting rods, one of the connecting rods is in transmission connection with the driving part, the other connecting rod is in transmission connection with any clamping part, and the driving part drives the clamping part to swing under the transmission action of the multi-connecting-rod structure so that the clamping part can be close to or away from other clamping parts. The clamp device solves the technical problem that a clamp device in the prior art is poor in working reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fixture, specifically, relate to a fixture device and have its tensile testing machine. BACKGROUND

[0002] In many fields of operation or test process, need to use the fixture to hold the target object, thereby facilitating subsequent processing or testing operation etc. For example, in the process of testing the battery film, need to use the tensile testing machine to carry out the tensile test, in this process, need to use two fixtures to clamp the film.

[0003] The fixture device in the related art has a variety of structural designs to meet specific clamping force requirements, but the transmission structure of these fixture devices is usually complex and has poor reliability. For example, the transmission structure of some fixture devices has a sliding fit structure, which has poor reliability in actual use.

[0004] For the technical problem of poor working reliability of the fixture device in the related art, no effective solution has been proposed so far. SUMMARY

[0005] The main purpose of the utility model is to provide a fixture device and a tensile testing machine with the same, to solve the technical problem of poor working reliability of the fixture device in the related art.

[0006] To achieve the above purpose, according to one aspect of the utility model, a fixture device is provided, which comprises: a clamping structure, the clamping structure comprising a plurality of clamping parts, the plurality of clamping parts being relatively close and far away from each other to clamp or release the target object; a drive structure, the drive structure comprising a drive part, the drive part being movably arranged along a predetermined direction; a multi-link structure, the multi-link structure comprising a plurality of links, one of the plurality of links being in transmission connection with the drive part, another of the plurality of links being in transmission connection with any one of the clamping parts, the drive part driving the clamping part to swing under the transmission action of the multi-link structure, so as to make the clamping part close to or away from the other clamping parts.

[0007] Further, the multi-link structure is a plurality of multi-link structures, the plurality of multi-link structures being arranged in one-to-one correspondence with the plurality of clamping parts, so as to drive the plurality of clamping parts to approach or move away from each other through the plurality of multi-link structures.

[0008] Further, the multi-link structure comprises: a first link, the first link being in transmission connection with the drive part to drive the first link to swing through the drive part; a second link, the second link being in transmission connection with the clamping part to drive the clamping part to swing through the second link; a third link, the first link and the second link both being in transmission connection with the third link, so as to drive the second link to swing through the third link when the first link swings.

[0009] Further, the clamp device comprises a support structure, the first connecting rod is swingably mounted to the support structure, and the second connecting rod is swingably mounted to the support structure.

[0010] Further, the driving part is provided with a plurality of first protrusions, the plurality of first protrusions are arranged at intervals along a preset direction, one end of the first connecting rod is provided with a matching part, the matching part is provided with a plurality of second protrusions, the plurality of second protrusions are arranged at intervals along an arc trajectory, and the plurality of first protrusions and the plurality of second protrusions are in meshing cooperation.

[0011] Further, the first connecting rod and the support structure are connected through a first pivot shaft, the first connecting rod and the third connecting rod are connected through a second pivot shaft, and the second pivot shaft and the matching part are located on opposite sides of the first pivot shaft.

[0012] Further, the clamping part is fixedly connected to one end of the second connecting rod, the second connecting rod and the support structure are connected through a third pivot shaft, the second connecting rod and the third connecting rod are connected through a fourth pivot shaft, and the fourth pivot shaft and the clamping part are located on opposite sides of the third pivot shaft.

[0013] Further, the clamping part is two, the multi-connecting rod structure is two, the two multi-connecting rod structures and the two clamping parts are arranged in one-to-one correspondence, so as to drive the two clamping parts to approach or move away from each other through the two multi-connecting rod structures, and when the driving part moves to the limit position on one side along the preset direction, the second connecting rods of the two multi-connecting rod structures are coaxially arranged.

[0014] Further, the driving structure comprises a motor and a screw rod, the screw rod is connected with the output shaft of the motor, the screw rod is arranged in extension along a preset direction, and the screw rod and the driving part are connected through thread cooperation.

[0015] According to another aspect of the utility model, a tensile testing machine is provided, the tensile testing machine comprises a plurality of clamp devices, so as to clamp the sample to be tested through the plurality of clamp devices, and the clamp device is the clamp device.

[0016] The clamping device applying the technical solution of this utility model includes: a clamping structure comprising multiple clamping parts, which can be arranged relatively close to or far apart to clamp or release a target object; a driving structure comprising a driving part movably arranged along a preset direction; and a multi-link structure comprising multiple links, one of which is drivenly connected to the driving part, and another of which is drivenly connected to any one of the clamping parts. Under the transmission action of the multi-link structure, the driving part drives the clamping part to swing, so that the clamping part moves closer to or further away from the other clamping parts. With this structural design, when the driving part of the driving structure moves along the preset direction, because one of the links in the multi-link structure is drivenly connected to the driving part, the driving part drives that link to swing. Power is transmitted through the multi-link structure to the link drivenly connected to the clamping part, thereby driving the clamping part to swing. In this way, the multiple clamping parts move closer to or further away from each other, achieving the clamping or releasing of the target object. The clamping device with this structural design transmits power through a multi-link structure and ultimately clamps the target object by swinging the clamping part. It has the advantages of simple structure and high reliability. Compared with clamping devices in related technologies, it effectively simplifies the structure of the device. Since there is no sliding fit or other structure, it is not easy to get stuck, and the working reliability is higher. It solves the technical problem of poor working reliability of clamping devices in related technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of an embodiment of the clamping device of this utility model.

[0019] The above figures include the following reference numerals:

[0020] 1. Clamping structure; 11. Clamping part; 2. Drive structure; 21. Drive part; 211. First tooth; 22. Motor; 23. Screw; 3. Multi-link structure; 31. First link; 311. Mating part; 312. Second tooth; 32. Second link; 33. Third link; 4. Support structure. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Please refer to Figure 1The utility model discloses an embodiment provides a fixture device, it includes: clamping structure 1, clamping structure 1 includes multiple clamping parts 11, multiple clamping parts 11 can be relatively close and far away and set to hold or loosen target object, drive structure 2, drive structure 2 includes drive part 21, and drive part 21 is movably arranged along the preset direction, multiple connecting rod structure 3, multiple connecting rod structure 3 includes multiple connecting rods, one of multiple connecting rods is transmission connection with drive part 21, and another of multiple connecting rods is transmission connection with any one clamping part 11, and drive part 21 swings under the transmission action of multiple connecting rod structure 3 and drives clamping part 11 to swing to make this clamping part 11 close or far away other clamping part 11.

[0023] When the drive part 21 of the fixture device with the structure design moves along the preset direction, one of the connecting rods of the multiple connecting rod structure 3 is transmission connection with the drive part 21, so the drive part 21 will swing the connecting rod, and the power is transmitted to the connecting rod transmission connection with the clamping part 11 through the multiple connecting rod structure 3, thereby driving the clamping part 11 to swing, so that the multiple clamping parts 11 will be close to or far away from each other, realizing the holding or loosening of the target object. The fixture device with the structure design realizes the transmission of power through the multiple connecting rod structure 3, and finally realizes the holding of the target object through the swing of the clamping part 11, which has the advantages of simple structure, high reliability, etc. Compared with the fixture device in the related art, the structure of the device is effectively simplified, and since there is no sliding fit structure, it is not easy to be stuck, and the working reliability is higher, which solves the technical problem of poor working reliability of the fixture device in the related art.

[0024] In specific implementation, the multiple connecting rod structure 3 can be one or multiple, when the multiple connecting rod structure 3 is one, it cooperates with one clamping part 11, thereby driving it to move relative to other clamping parts 11, thereby realizing the holding or loosening of the target object.

[0025] In one specific embodiment, the multiple connecting rod structure 3 is multiple, and the multiple multiple connecting rod structures 3 are correspondingly arranged with the multiple clamping parts 11, so as to correspondingly drive the multiple clamping parts 11 to close to or far away from each other through the multiple multiple connecting rod structures 3.

[0026] In the embodiment, the multiple connecting rod structures 3 are multiple, and the multiple multiple connecting rod structures correspond to the multiple clamping parts 11, that is, each multiple connecting rod structure 3 drives one clamping part 11 to move, thereby enabling the multiple clamping parts 11 of the clamping structure 1 to jointly perform the clamping action, improving the flexibility of the clamping action.

[0027] Specifically, the multi-link structure 3 comprises: a first link 31, the first link 31 is in transmission connection with the driving part 21, so as to drive the first link 31 to swing through the driving part 21; a second link 32, the second link 32 is in transmission connection with the clamping part 11, so as to drive the clamping part 11 to swing through the second link 32; and a third link 33, the first link 31 and the second link 32 are both in transmission connection with the third link 33, so as to drive the second link 32 to swing through the third link 33 when the first link 31 swings.

[0028] Specifically, the clamp device comprises a support structure 4, the first link 31 is swingably installed on the support structure 4, and the second link 32 is swingably installed on the support structure 4.

[0029] In the embodiment, the support structure 4, the first link 31, the second link 32 and the third link 33 form a four-link structure, which can efficiently transmit power and help the clamping part 11 to clamp the target object.

[0030] The driving part 21 drives the first link 31 to swing, which can be realized through various structures as long as the movement of the driving part 21 can be converted into the swing of the first link 31, for example, through a crank slider mechanism. In the embodiment, a plurality of first protrusions 211 are arranged on the crankshaft driving part 21, and the plurality of first protrusions 211 are arranged at intervals along a preset direction; one end of the first link 31 is provided with a matching part 311, the matching part 311 is provided with a plurality of second protrusions 312, and the plurality of second protrusions 312 are arranged at intervals along an arc trajectory, and the plurality of first protrusions 211 and the plurality of second protrusions 312 are in meshing cooperation.

[0031] When the driving part 21 moves along the preset direction, the rack structure composed of the plurality of first protrusions 211 will move along the preset direction, and the plurality of second protrusions 312 will rotate in the process of meshing with them, thereby driving the first link 31 to swing.

[0032] Specifically, the first link 31 and the support structure 4 are connected through a first pivot shaft, the first link 31 and the third link 33 are connected through a second pivot shaft, and the second pivot shaft and the matching part 311 are located on opposite sides of the first pivot shaft.

[0033] The clamping part 11 is fixedly connected to one end of the second link 32, the second link 32 and the support structure 4 are connected through a third pivot shaft, and the second link 32 and the third link 33 are connected through a fourth pivot shaft, and the fourth pivot shaft and the clamping part 11 are located on opposite sides of the third pivot shaft.

[0034] In one specific embodiment, the clamping portions 11 are two, the multi-link structures 3 are two, and the two multi-link structures 3 are arranged in one-to-one correspondence with the two clamping portions 11, so as to drive the two clamping portions 11 to move towards or away from each other through the two multi-link structures 3, wherein the second links 32 of the two multi-link structures 3 are coaxially arranged when the driving portion 21 moves to the limit position on one side along the preset direction.

[0035] In the embodiment, the clamping portions 11 are two, and the second links 32 of the two multi-link structures 3 are coaxially arranged when the driving portion 21 moves to the limit position on one side along the preset direction, so that the entire clamp device is in a position similar to a dead point, thereby not needing to continuously provide a large driving force to achieve a reliable clamping effect.

[0036] Specifically, the driving structure 2 includes a motor 22 and a screw rod 23, the screw rod 23 is connected with the output shaft of the motor 22, the screw rod 23 is arranged to extend along the preset direction, and the screw rod 23 is threadedly connected with the driving portion 21.

[0037] By adopting the motor 22 to drive the screw rod 23 to rotate, the driving portion 21 can be driven to move along the preset direction under the thread cooperation, and this structure can only drive the driving portion 21 to move through the motor 22, and the driving portion 21 will not move when the motor 22 loses power, so that the situation that the clamping device loses power and fails to clamp can be avoided, and the reliability of the clamping device in clamping is further improved.

[0038] In one specific embodiment, the clamp device further includes a guide structure, the guide structure is matched with the driving portion 21, so as to guide the movement of the driving portion 21 along the preset direction through the guide structure. In actual implementation, the specific structure of the guide structure can be various. For example, the guide structure includes a sliding rail, the sliding rail is arranged to extend along the preset direction on the support structure 4, the guide structure further includes a sliding block, the sliding block is installed on the driving portion 21, and the sliding block is slidably matched with the sliding rail. For another example, the guide structure can also be an optical axis and a shaft sleeve structure, a sliding groove and a sliding block structure, and the like.

[0039] In addition, the embodiment of the utility model further provides a tensile testing machine, the tensile testing machine includes a plurality of clamp devices, so as to clamp the sample to be tested through the plurality of clamp devices, wherein the clamp device is the clamp device.

[0040] From the above description, it can be seen that the embodiment of the utility model realizes the following technical effects:

[0041] The clamp device of the embodiment of the utility model includes: clamping structure 1, clamping structure 1 includes multiple clamping parts 11, multiple clamping parts 11 can be relatively close and far away to be set to the target object is clamped or loosened;Driving structure 2, driving structure 2 includes driving part 21, and driving part 21 is movably arranged along the preset direction;Multi-connecting rod structure 3, multi-connecting rod structure 3 includes multiple connecting rods, one of multiple connecting rods is in transmission with driving part 21, and another of multiple connecting rods is in transmission with any one clamping part 11, and driving part 21 swings clamping part 11 under the transmission of multi-connecting rod structure 3 to make the clamping part 11 close or far away from other clamping parts 11.Adopting the clamp device of this structural design, when the driving part 21 of driving structure 2 moves along the preset direction, since one of multi-connecting rod structure 3 is in transmission with driving part 21, therefore driving part 21 will swing the connecting rod, and power is transmitted to the connecting rod in transmission with clamping part 11 through multi-connecting rod structure 3, to swing clamping part 11, so multiple clamping parts 11 will be close to each other or far away from each other, and the target object is clamped or loosened.Adopting the clamp device of this structural design, power transmission is realized through multi-connecting rod structure 3, and finally the target object is clamped through the swing of clamping part 11, which has the advantages of simple structure, high reliability and the like, compared with the clamp device in the related art, the structure of the device is effectively simplified, since there is no sliding fit structure and the like, it is not easy to be stuck and the like, and the working reliability is higher, and the technical problem of poor working reliability of the clamp device in the related art is solved.

[0042] For ease of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial relationship between one device or feature and another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0043] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0044] It is to be understood that the terms "first", "second", and the like, used herein do not necessarily connote any order, quantity, composition, or importance, but are used to distinguish one element from another, and do not necessarily indicate a requirement or order. It is to be understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0045] The preferred embodiments of the present application have been described above with the aid of drawing provided only by way of example and therefore changes in form and detail can be made without departing from the spirit and scope of the application. What is claimed is:

Claims

1. A clamping device, characterized in that, include: The clamping structure (1) includes a plurality of clamping parts (11), which can be arranged relatively close to each other and far apart to clamp or release the target object. A drive structure (2) includes a drive unit (21) which is movably disposed along a preset direction; A multi-link structure (3) includes multiple links, one of which is connected to the drive unit (21) and another of which is connected to any one of the clamping parts (11). The drive unit (21) drives the clamping part (11) to swing under the transmission action of the multi-link structure (3) so that the clamping part (11) moves closer to or away from other clamping parts (11).

2. The clamping device according to claim 1, characterized in that, There are multiple multi-link structures (3), and each multi-link structure (3) is arranged in a one-to-one correspondence with a multiple clamping part (11) so that the multiple multi-link structures (3) can drive the multiple clamping parts (11) to move closer or further away from each other.

3. The clamping device according to claim 1 or 2, characterized in that, The multi-link structure (3) includes: The first link (31) is connected to the drive unit (21) for driving the first link (31) to swing through the drive unit (21); The second link (32) is connected to the clamping part (11) in a transmission manner, so as to drive the clamping part (11) to swing through the second link (32); The third link (33) is connected to both the first link (31) and the second link (32) so that when the first link (31) swings, the second link (32) is driven to swing through the third link (33).

4. The clamping device according to claim 3, characterized in that, The clamping device includes a support structure (4), the first link (31) is swayably mounted on the support structure (4), and the second link (32) is swayably mounted on the support structure (4).

5. The clamping device according to claim 4, characterized in that, The drive unit (21) is provided with a plurality of first protruding teeth (211), which are spaced apart along the preset direction; one end of the first connecting rod (31) is provided with a mating part (311), which is provided with a plurality of second protruding teeth (312), which are spaced apart along an arc-shaped trajectory, and the plurality of first protruding teeth (211) mesh with the plurality of second protruding teeth (312).

6. The clamping device according to claim 5, characterized in that, The first link (31) is connected to the bracket structure (4) via a first pivot shaft, and the first link (31) is connected to the third link (33) via a second pivot shaft, wherein the second pivot shaft and the mating part (311) are located on opposite sides of the first pivot shaft.

7. The clamping device according to any one of claims 4 to 6, characterized in that, The clamping part (11) is fixedly connected to one end of the second connecting rod (32), the second connecting rod (32) is connected to the bracket structure (4) through a third pivot shaft, and the second connecting rod (32) is connected to the third connecting rod (33) through a fourth pivot shaft, wherein the fourth pivot shaft and the clamping part (11) are located on opposite sides of the third pivot shaft.

8. The clamping device according to any one of claims 3 to 6, characterized in that, There are two clamping parts (11) and two multi-link structures (3). The two multi-link structures (3) are arranged in a one-to-one correspondence with the two clamping parts (11) so that the two clamping parts (11) are driven to move closer or further away from each other by the two multi-link structures (3). When the driving part (21) moves to the limit position on one side along the preset direction, the second link (32) of the two multi-link structures (3) is coaxially arranged.

9. The clamping device according to any one of claims 1, 2, or 4 to 6, characterized in that, The drive structure (2) includes a motor (22) and a screw (23). The screw (23) is connected to the output shaft of the motor (22). The screw (23) extends along the preset direction. The screw (23) and the drive unit (21) are connected by a thread.

10. A tensile testing machine, characterized in that, The tensile testing machine includes multiple clamping devices for clamping the sample to be tested, wherein the clamping devices are the clamping devices according to any one of claims 1 to 9.

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