Bending test device for connecting sheet

Abstract

The utility model discloses a bending test device for a connecting sheet. The bending test device comprises a workbench; the supporting rod is vertically arranged on the working table; the rotating mechanism is arranged on the supporting rod and can rotate on the supporting rod; the first clamping mechanism is arranged on the rotating mechanism, and a clamping part of the first clamping mechanism can elastically move so as to be suitable for clamping connecting pieces of different sizes and shapes; the top plate is arranged at the top of the supporting rod; the transmission mechanism is arranged in the top plate and can move in the length direction of the top plate; and the second clamping mechanism is connected with the transmission mechanism, a clamping part of the second clamping mechanism can elastically move so that the second clamping mechanism can clamp connecting pieces of different sizes and shapes, and the second clamping mechanism can ascend or descend in the vertical direction so as to be suitable for clamping the other ends of the connecting pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a bending test device for a connecting piece. Background Art

[0002] Battery shrapnel belongs to the category of hardware stamping and electronic hardware materials, also known as battery connector, charger terminal, battery connection contact piece, battery spring piece, hardware battery piece, battery buckle, etc.; battery shrapnel is an important component of the battery, made of copper, iron, stainless steel and other materials. Electroplating is CT, silver, nickel. When the battery shrapnel installed on the conductive film is pressed, the center point of the shrapnel contacts the PCB board to form a loop, and the current passes through. It has the characteristics of strong conductivity and good feel.

[0003] Before the existing battery shrapnel is stamped and formed, it is necessary to test multiple indicators such as bending stress, deformation and fracture stress. During the test process, a comprehensive evaluation is required based on the actual test results to determine whether the sample is qualified. Because the battery shrapnel requires different sizes and shapes for different products, manufacturers need to replace corresponding equipment for testing when testing connecting pieces of different sizes. When testing connecting pieces with different shapes on the surface, the surface of the connecting piece may be deformed due to excessive clamping force, resulting in inaccurate data after the test. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide a bending test device for a connecting piece, comprising:

[0005] Workbench;

[0006] A support rod, the support rod is vertically arranged on the workbench;

[0007] A rotating mechanism, the rotating mechanism is arranged on the supporting rod and can rotate on the supporting rod;

[0008] A first clamping mechanism, wherein the first clamping mechanism is disposed on the rotating mechanism, and a clamping portion of the first clamping mechanism is elastically movable so as to be suitable for clamping connecting pieces of different sizes and shapes;

[0009] A top plate, the top plate being arranged on the top of the support rod;

[0010] A transmission mechanism, the transmission mechanism is arranged in the top plate and is movable along the length direction of the top plate;

[0011] The second clamping mechanism is connected to the transmission mechanism, the clamping portion of the second clamping mechanism can be elastically movable so that the second clamping mechanism can clamp connecting pieces of different sizes and shapes, and the second clamping mechanism can rise or fall in the vertical direction to be suitable for approaching or moving away from the other end of the connecting piece.

[0012] Preferably, a first cavity is provided in the support rod, and the first cavity is arranged along the length direction of the support rod.

[0013] Preferably, the rotating mechanism comprises:

[0014] A first motor, wherein the first motor is disposed in the first cavity, and a transmission shaft of the first motor extends to a side surface of the support rod;

[0015] an annular groove, the annular groove is arranged on the side of the support rod and is arranged around the transmission shaft of the first motor;

[0016] a turntable connected to a transmission shaft of the first motor;

[0017] Two slide bars, one end of the two slide bars is respectively connected to the rotating disk, and the other end is arranged in the annular groove, and the two slide bars are respectively arranged opposite to each other.

[0018] Preferably, the first clamping mechanism comprises:

[0019] First pneumatic gripper;

[0020] A plurality of first grooves, wherein the plurality of first grooves are arranged on one side of the first pneumatic clamping jaw, and the plurality of first grooves are arranged at equal intervals along the length direction of the first pneumatic clamping jaw;

[0021] A plurality of first springs, wherein the plurality of first springs are respectively disposed in the plurality of first grooves;

[0022] A plurality of first buffer pads are respectively connected to the plurality of first springs.

[0023] Preferably, the first clamping mechanism further comprises:

[0024] A plurality of second grooves, wherein the plurality of second grooves are arranged on the other side of the first pneumatic clamping jaw and are arranged opposite to the plurality of first grooves, and the plurality of second grooves are arranged at equal intervals along the length direction of the first pneumatic clamping jaw;

[0025] A plurality of second springs, wherein the plurality of second springs are respectively disposed in the plurality of second grooves;

[0026] A plurality of second buffer pads are respectively connected to the plurality of second springs.

[0027] Preferably, a second cavity is provided in the top plate, and the second cavity is arranged along the length direction of the top plate.

[0028] Preferably, a slide groove is provided at the bottom of the top plate, the slide groove is arranged along the length direction of the top plate, and the slide groove passes through the second cavity.

[0029] Preferably, the transmission mechanism comprises:

[0030] a second motor, the second motor being disposed at one end of the second cavity;

[0031] A bearing seat, the bearing seat is arranged at the other end of the second cavity and is arranged opposite to the second motor;

[0032] A screw rod, one end of which is connected to the transmission shaft of the second motor, and the other end of which is rotatably disposed in the bearing seat;

[0033] Two slide rails, the two slide rails are arranged in the second cavity, and are respectively arranged at two sides of the second motor at intervals, and are arranged along the length direction of the second cavity;

[0034] The slider is sleeved on the screw rod and rotatably connected with the slider, and the two ends of the slider are respectively slidably connected with two slide rails.

[0035] Preferably, the second clamping mechanism comprises:

[0036] A cylinder, one end of which is connected to the slider, the cylinder is arranged in a vertical direction, and the cylinder is slidably arranged in the slide groove;

[0037] a second pneumatic gripper connected to the other end of the cylinder;

[0038] A plurality of third grooves, wherein the plurality of third grooves are arranged on one side of the second pneumatic clamping jaw, and the plurality of third grooves are arranged at equal intervals along the length direction of the second pneumatic clamping jaw;

[0039] A plurality of third springs, wherein the plurality of third springs are respectively disposed in the plurality of third grooves;

[0040] A plurality of third buffer pads are respectively connected to the plurality of third springs.

[0041] Preferably, the second clamping mechanism further comprises:

[0042] A plurality of fourth grooves, wherein the plurality of fourth grooves are arranged on the other side of the second pneumatic clamping jaw and are arranged opposite to the plurality of third grooves, and the plurality of fourth grooves are arranged at equal intervals along the length direction of the second pneumatic clamping jaw;

[0043] a plurality of fourth springs, wherein the plurality of fourth springs are respectively disposed in the plurality of fourth grooves;

[0044] A plurality of fourth buffer pads are respectively connected to the plurality of fourth springs.

[0045] The above solution of the utility model includes at least the following beneficial effects:

[0046] The connecting piece to be tested is placed between the first clamping mechanism manually or with external equipment, and then the first clamping mechanism clamps one end of the connecting piece, and then the transmission mechanism drives the second clamping mechanism to move to the upper end of the connecting piece, and then the second clamping mechanism descends in the vertical direction and clamps the other end of the connecting piece, and finally the first clamping mechanism starts to rotate to perform a bending test on the connecting piece;

[0047] The transmission mechanism drives the second clamping mechanism to move so that the second clamping mechanism can adapt to connecting pieces of different sizes, so as to facilitate bending tests on connecting pieces of different sizes;

[0048] The clamping parts of the first clamping mechanism and the second clamping mechanism are both elastically movable so as to better fit the connecting pieces of different shapes, so that the first clamping mechanism and the second clamping mechanism can better clamp the connecting piece.

[0049] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0051] Figure 1 It is a structural schematic diagram of a bending test device for a connecting piece provided in an embodiment of the utility model;

[0052] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0053] Figure 3 It is a structural schematic diagram of a support rod provided in an embodiment of the utility model;

[0054] Figure 4 yes Figure 3A schematic diagram of the cross-sectional structure of BB;

[0055] Figure 5 It is a schematic diagram of the structure of the top plate provided in the embodiment of the utility model;

[0056] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of CC;

[0057] Figure 7 yes Figure 6 Enlarged view of part D.

[0058] Description of Figure Numbers:

[0059] 1. workbench, 2. support rod, 3. rotating mechanism, 4. first clamping mechanism, 5. top plate, 6. transmission mechanism, 7. second clamping mechanism;

[0060] 201, first cavity;

[0061] 301, first motor, 302, annular groove, 303, rotating disk, 304, sliding rod;

[0062] 401, a first pneumatic clamp, 402, a first groove, 403, a first spring, 404, a first buffer pad, 405, a second groove, 406, a second spring, 407, a second buffer pad;

[0063] 501, second cavity, 502, chute;

[0064] 601, second motor, 602, bearing seat, 603, lead screw, 604, slide rail, 605, slider;

[0065] 701, cylinder, 702, second pneumatic clamp, 703, third groove, 704, third spring, 705, third buffer pad, 706, fourth groove, 707, fourth spring, 708, fourth buffer pad.

[0066] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0067] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0072] The bending test device of the connecting piece according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0073] See also Figures 1 to 7In this embodiment, it includes: a workbench 1; a support rod 2, which is vertically arranged on the workbench 1; a rotating mechanism 3, which is arranged on the support rod 2 and can rotate on the support rod 2; a first clamping mechanism 4, which is arranged on the rotating mechanism 3, and the clamping part of the first clamping mechanism 4 can be elastically movable to be suitable for clamping connecting pieces of different sizes and shapes; a top plate 5, which is arranged on the top of the support rod 2; a transmission mechanism 6, which is arranged in the top plate 5 and can be moved along the length direction of the top plate 5; a second clamping mechanism 7, which is connected to the transmission mechanism 6, and the clamping part of the second clamping mechanism 7 can be elastically movable so that the second clamping mechanism 7 can clamp connecting pieces of different sizes and shapes, and the second clamping mechanism 7 can rise or fall in the vertical direction to be suitable for approaching or moving away from the other end of the connecting piece; the connecting piece to be tested is placed between the first clamping mechanism 4 manually or with external equipment, and then the first clamping mechanism 4 clamps one end of the connecting piece, and then the transmission mechanism 6 drives the second clamping mechanism 7 to move to the upper end of the connecting piece, and then the second clamping mechanism 7 descends in the vertical direction and clamps the other end of the connecting piece, and finally the first clamping mechanism 4 starts to rotate to perform a bending test on the connecting piece; the transmission mechanism 6 drives the second clamping mechanism 7 to be movable, so that the second clamping mechanism 7 can adapt to connecting pieces of different sizes, so as to facilitate bending tests on connecting pieces of different sizes; the clamping parts of the first clamping mechanism 4 and the second clamping mechanism 7 are both elastically movable, so as to better fit connecting pieces of different shapes, so that the first clamping mechanism 4 and the second clamping mechanism 7 can better clamp the connecting piece.

[0074] See also Figures 2 to 4 In this embodiment, a first cavity 201 is provided in the support rod 2, and the first cavity 201 is arranged along the length direction of the support rod 2; a rotating mechanism 3 can be arranged in the first cavity 201 to save installation space.

[0075] In this embodiment, the rotating mechanism 3 includes: a first motor 301, the first motor 301 is arranged in the first cavity 201, and the transmission shaft of the first motor 301 extends to the side of the support rod 2; an annular groove 302, the annular groove 302 is arranged on the side of the support rod 2 and is arranged around the transmission shaft of the first motor 301; a turntable 303, the turntable 303 is connected to the transmission shaft of the first motor 301; two sliding rods 304, one end of the two sliding rods 304 is respectively connected to the turntable 303, and the other end is arranged in the annular groove 302, and the two sliding rods 304 are respectively arranged opposite to each other; the first motor 301 drives the turntable 303 to rotate, and when the turntable 303 rotates, the two sliding rods 304 move in the annular groove 302, and the two sliding rods 304 are suitable for assisting the turntable 303 to remain stable during rotation, so as to prevent the turntable 303 from shifting during rotation.

[0076] In this embodiment, the first clamping mechanism 4 includes: a first pneumatic clamping jaw 401; a plurality of first grooves 402, the plurality of first grooves 402 are arranged on one side of the first pneumatic clamping jaw 401, and the plurality of first grooves 402 are arranged at equal intervals along the length direction of the first pneumatic clamping jaw 401; a plurality of first springs 403, the plurality of first springs 403 are respectively arranged in the plurality of first grooves 402; a plurality of first buffer pads 404, the plurality of first buffer pads 404 are respectively connected to the plurality of first springs 403; the first clamping mechanism 4 also includes: a plurality of second grooves 405, the plurality of second grooves 405 are arranged on the other side of the first pneumatic clamping jaw 401, and are arranged opposite to the plurality of first grooves 402, and the plurality of second grooves 405 The first pneumatic clamp 401 is arranged at equal intervals along the length direction; a plurality of second springs 406 are respectively arranged in a plurality of second grooves 405; a plurality of second buffer pads 407 are respectively connected to the plurality of second springs 406; when the first pneumatic clamp 401 clamps a section of the connecting piece, the plurality of first buffer pads 404 and the plurality of second buffer pads 407 will fit the connecting piece, and the connecting piece has an uneven shape after molding. The plurality of first buffer pads 404 and the plurality of second buffer pads 407 will be compressed or extended according to the shape of the connecting piece so as to better fit the connecting piece, so that the connecting piece will not cause errors in the test results due to unstable clamping during testing.

[0077] See also Figures 5 to 7 In this embodiment, a second cavity 501 is provided in the top plate 5, and the second cavity 501 is arranged along the length direction of the top plate 5; a slide groove 502 is provided at the bottom of the top plate 5, and the slide groove 502 is arranged along the length direction of the top plate 5, and the slide groove 502 passes through the second cavity 501; the transmission mechanism 6 is arranged in the second cavity 501 and can move in the second cavity 501, and the second clamping mechanism 7 is arranged in the slide groove 502, so that the second clamping mechanism 7 can slide.

[0078] In this embodiment, the transmission mechanism 6 includes: a second motor 601, which is disposed at one end of the second cavity 501; a bearing seat 602, which is disposed at the other end of the second cavity 501 and is arranged opposite to the second motor 601; a screw rod 603, which has one end connected to the transmission shaft of the second motor 601 and the other end rotatably disposed in the bearing seat 602; two slide rails 604, which are disposed in the second cavity 501 and are spaced apart from the second motor 601. On both sides of the second cavity 501, and arranged along the length direction of the second cavity 501; the slider 605, the slider 605 is sleeved on the screw rod 603 and is rotatably connected with the slider 605, and the two ends of the slider 605 are respectively slidably connected with the two slide rails 604; the second motor 601 drives the screw rod 603 to rotate in the bearing seat 602, and the screw rod 603 drives the slider 605 to move linearly on the two slide rails 604 when rotating, so that the second slider 605 can drive the second clamping mechanism 7 to move in the slide groove 502.

[0079] In this embodiment, the second clamping mechanism 7 includes: a cylinder 701, one end of the cylinder 701 is connected to the slider 605, the cylinder 701 is arranged in the vertical direction, and the cylinder 701 is slidably arranged in the slide groove 502; a second pneumatic clamp 702, the second pneumatic clamp 702 is connected to the other end of the cylinder 701; a plurality of third grooves 703, the plurality of third grooves 703 are arranged on one side of the second pneumatic clamp 702, and the plurality of third grooves 703 are arranged at equal intervals along the length direction of the second pneumatic clamp 702; a plurality of third springs 704, the plurality of third springs 704 are respectively arranged in the plurality of third grooves 703; a plurality of third buffer pads 705, the plurality of third buffer pads 705 are respectively connected to the plurality of third springs 704; the second clamping mechanism 7 also includes: a plurality of fourth grooves 706, the plurality of fourth grooves 706 are arranged On the other side of the second pneumatic clamp 702, it is arranged opposite to the multiple third grooves 703, and the multiple fourth grooves 706 are arranged at equal intervals along the length direction of the second pneumatic clamp 702; multiple fourth springs 707, multiple fourth springs 707 are respectively arranged in the multiple fourth grooves 706; multiple fourth buffer pads 708, multiple fourth buffer pads 708 are respectively connected to the multiple fourth springs 707; the second pneumatic clamp 702 is at the other end of the clamping connecting piece, the multiple third buffer pads 705 and the multiple third buffer pads 705 will fit the connecting piece, and under the clamping and contraction of the second pneumatic clamp 702, the multiple third buffer pads 705 and the multiple third buffer pads 705 are fitted according to the shape of the connecting piece, so that the connecting piece will not slip or be clamped and deformed due to the uneven surface during the test.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A bending test device for a connecting piece, characterized in that: include: Workbench; A support rod, the support rod is vertically arranged on the workbench; A rotating mechanism, the rotating mechanism is arranged on the supporting rod and can rotate on the supporting rod; A first clamping mechanism, wherein the first clamping mechanism is disposed on the rotating mechanism, and a clamping portion of the first clamping mechanism is elastically movable so as to be suitable for clamping connecting pieces of different sizes and shapes; A top plate, the top plate being arranged on the top of the support rod; A transmission mechanism, the transmission mechanism is arranged in the top plate and is movable along the length direction of the top plate; The second clamping mechanism is connected to the transmission mechanism, the clamping portion of the second clamping mechanism can be elastically movable so that the second clamping mechanism can clamp connecting pieces of different sizes and shapes, and the second clamping mechanism can rise or fall in the vertical direction to be suitable for approaching or moving away from the other end of the connecting piece.

2. The bending test device for the connecting piece according to claim 1, characterized in that: A first cavity is provided in the support rod, and the first cavity is arranged along the length direction of the support rod.

3. The bending test device of the connecting piece according to claim 2, characterized in that: The rotating mechanism comprises: A first motor, wherein the first motor is disposed in the first cavity, and a transmission shaft of the first motor extends to a side surface of the support rod; an annular groove, the annular groove is arranged on the side of the support rod and is arranged around the transmission shaft of the first motor; a turntable connected to a transmission shaft of the first motor; Two slide bars, one end of the two slide bars is respectively connected to the rotating disk, and the other end is arranged in the annular groove, and the two slide bars are respectively arranged opposite to each other.

4. The bending test device for the connecting piece according to claim 3, characterized in that: The first clamping mechanism comprises: First pneumatic gripper; A plurality of first grooves, wherein the plurality of first grooves are arranged on one side of the first pneumatic clamping jaw, and the plurality of first grooves are arranged at equal intervals along the length direction of the first pneumatic clamping jaw; A plurality of first springs, wherein the plurality of first springs are respectively disposed in the plurality of first grooves; A plurality of first buffer pads are respectively connected to the plurality of first springs.

5. The bending test device for the connecting piece according to claim 4, characterized in that: The first clamping mechanism also includes: A plurality of second grooves, wherein the plurality of second grooves are arranged on the other side of the first pneumatic clamping jaw and are arranged opposite to the plurality of first grooves, and the plurality of second grooves are arranged at equal intervals along the length direction of the first pneumatic clamping jaw; A plurality of second springs, wherein the plurality of second springs are respectively disposed in the plurality of second grooves; A plurality of second buffer pads are respectively connected to the plurality of second springs.

6. The bending test device for a connecting piece according to claim 1, characterized in that: A second cavity is provided in the top plate, and the second cavity is arranged along the length direction of the top plate.

7. The bending test device for the connecting piece according to claim 6, characterized in that: A slide groove is provided at the bottom of the top plate, the slide groove is arranged along the length direction of the top plate, and the slide groove passes through the second cavity.

8. The bending test device for the connecting piece according to claim 7, characterized in that: The transmission mechanism comprises: a second motor, the second motor being disposed at one end of the second cavity; A bearing seat, the bearing seat is arranged at the other end of the second cavity and is arranged opposite to the second motor; A screw rod, one end of which is connected to the transmission shaft of the second motor, and the other end of which is rotatably disposed in the bearing seat; Two slide rails, the two slide rails are arranged in the second cavity, and are respectively arranged at two sides of the second motor at intervals, and are arranged along the length direction of the second cavity; The slider is sleeved on the screw rod and rotatably connected with the slider, and the two ends of the slider are respectively slidably connected with two slide rails.

9. The bending test device for the connecting piece according to claim 8, characterized in that: The second clamping mechanism comprises: A cylinder, one end of which is connected to the slider, the cylinder is arranged in a vertical direction, and the cylinder is slidably arranged in the slide groove; a second pneumatic gripper connected to the other end of the cylinder; A plurality of third grooves, wherein the plurality of third grooves are arranged on one side of the second pneumatic clamping jaw, and the plurality of third grooves are arranged at equal intervals along the length direction of the second pneumatic clamping jaw; A plurality of third springs, wherein the plurality of third springs are respectively disposed in the plurality of third grooves; A plurality of third buffer pads are respectively connected to the plurality of third springs.

10. The bending test device for the connecting piece according to claim 9, characterized in that: The second clamping mechanism also includes: A plurality of fourth grooves, wherein the plurality of fourth grooves are arranged on the other side of the second pneumatic clamping jaw and are arranged opposite to the plurality of third grooves, and the plurality of fourth grooves are arranged at equal intervals along the length direction of the second pneumatic clamping jaw; a plurality of fourth springs, wherein the plurality of fourth springs are respectively disposed in the plurality of fourth grooves; A plurality of fourth buffer pads are respectively connected to the plurality of fourth springs.

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