Repeated bending testing device for aluminum alloy plate

Abstract

The invention relates to a repeated bending testing device for an aluminum alloy plate in the technical field of aluminum alloy performance detection. The clamping assembly is arranged at the top of the fixing base, the clamping assembly is provided with two clamping parts which are arranged in a front-back spaced mode, and at least one clamping part can move front and back so as to clamp the middle of the sample plate; the two inner movable assemblies are arranged on the left side and the right side of the fixing base correspondingly. The inner movable assembly is provided with a mounting block and two movable parts which are located on the top face of the mounting block and arranged in a front-back spaced mode, and the movable parts in the same direction with the movable clamping parts are movably connected to the top face of the mounting block in a front-back mode. The middle of the sample plate can be clamped through the clamping assembly, the two ends of the short connecting rod are driven by the driving assembly to move back and forth in a reciprocating mode, then the inner movable assembly clamps the ends of the sample plate to move back and forth in a reciprocating mode, the positions, corresponding to the two sides of the clamping assembly, of the sample plate are bent repeatedly, and the function of testing two point positions at the same time is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy performance detection, and in particular to a repeated bending test device for an aluminum alloy plate. Background Art

[0002] For soft aluminum alloy sheets, before mass production, it is necessary to take multiple samples of the materials used to produce the aluminum alloy sheets for bending tests to ensure that they meet customer requirements. However, there is no equipment in the prior art specifically for repeated bending tests on soft aluminum alloy samples. The current practice is to use a bending machine to test the aluminum alloy samples, but the bending machine cannot perform repeated bending experiments, and some products cannot meet the requirements of downstream customers for repeated bending tests.

[0003] To this end, we designed a repeated bending test device for aluminum alloy sheets. Summary of the invention

[0004] In order to overcome the deficiencies in the background technology, the present invention discloses a repeated bending test device for an aluminum alloy plate.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A repeated bending test device for an aluminum alloy plate, comprising: Fixed seat; A clamping assembly is arranged on the top of the fixing seat, and the clamping assembly has two clamping parts spaced apart from each other, and at least one clamping part can move forward and backward to clamp the middle part of the sample; The inner movable assembly has two groups, which are respectively arranged on the left and right sides of the fixed seat; the inner movable assembly has a mounting block and two movable parts located on the top surface of the mounting block and arranged at intervals in front and back, and the movable part in the same direction as the movable clamping part is movably connected to the top surface of the mounting block in front and back; A driving assembly is arranged on the fixing seat, and the output shaft of the driving assembly is provided with short connecting rods whose two ends are respectively connected to the inner movable assembly to drive the corresponding section of the template to bend repeatedly; The movable part and the clamping part in the same direction are located in the same straight line on one side of the corresponding sample plate.

[0006] Preferably, a sliding fit structure is provided between the fixing seat and the movable clamping portion, and between the mounting block and the movable portion.

[0007] Preferably, the clamping portion is a rigid roller with a vertical central axis.

[0008] Preferably, the movable part is a roller with a vertical central axis.

[0009] Preferably, the drive assembly includes a drive motor and a reducer, the reducer input shaft is drivingly connected to the drive motor output shaft, the reducer output shaft faces upward, the middle part of the short connecting rod is correspondingly connected to the reducer output shaft, and the two ends are respectively connected to the two inner movable components.

[0010] Preferably, an outer movable component with the same structure is provided at intervals on the outer side of the inner movable component, and the reducer output shaft is also provided with a long connecting rod located below the short connecting rod, and the two ends of the long connecting rod are respectively connected to the outer movable components on the same side.

[0011] Preferably, an upper rotating shaft rotatably connected to a fixed seat is provided in the middle of the short connecting rod, a lower rotating shaft rotatably connected to a fixed seat is provided in the middle of the long connecting rod, and the lower end of the upper rotating shaft is connected to the upper end of the lower rotating shaft through a transmission.

[0012] Preferably, a transmission gear is fixedly sleeved on the lower end of the lower rotating shaft, and the reducer has two output shafts with opposite rotational speeds but the same speed. Both output shafts are fixedly sleeved with semicircular gears that can mesh with the transmission gear, and the two semicircular gears mesh with the transmission gear alternately to drive the lower rotating shaft to reciprocate by ±90 degrees.

[0013] Preferably, the speed ratio of the lower rotating shaft to the upper rotating shaft is 2.

[0014] Preferably, it also includes a plurality of adjustment components for adjusting the position of the clamping portion or the movable portion, so as to adjust the position of the clamping portion or the movable portion in a one-to-one correspondence.

[0015] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects: 1. The middle part of the sample can be clamped by the clamping assembly, and the two ends of the short connecting rod can be driven to move back and forth by a driving assembly, so that the inner movable assembly can clamp the ends of the sample and move back and forth, so that the sample can be repeatedly bent at the positions on both sides of the clamping assembly, realizing the simultaneous testing function of two points; 2. The setting of the roller for the clamping part can effectively prevent the sample from breaking prematurely due to the influence of sharp corners at the reciprocating bending position, which will affect the test results; 3. The movable part is set as a roller, so that during the reciprocating bending process of the sample, the position of the sample clamped by the internal movable component can move axially relative to the internal movable component, eliminating the influence of the axial pulling force on the sample, and effectively improving the accuracy of the test results; 4. The setting of the drive assembly and the transmission gear enables the drive motor to rotate in only one direction to repeatedly bend the corresponding section of the sample. Compared with the frequent change of direction of the drive motor, the service life of the drive motor is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the first structure of the present invention; Figure 2 is a schematic diagram of a second structure of the present invention; Figure 3 It is a schematic diagram of the second structure of the present invention from another viewing angle; Figure 4 This is a schematic diagram of the action principle of the second structure of the present invention; Figure 5 Another schematic diagram of the action principle of the second structure of the present invention; Figure 6 It is a schematic diagram of the cooperation between the driving assembly and the transmission gear in the present invention.

[0017] In the figure: 1. fixed seat; 2. clamping assembly; 21. clamping part; 3. inner movable assembly; 31. mounting block; 32. movable part; 4. driving assembly; 41. driving motor; 42. reducer; 43. semicircular gear; 5. short connecting rod; 51. upper rotating shaft; 6. sliding fit structure; 7. outer movable assembly; 8. long connecting rod; 81. lower rotating shaft; 82. transmission gear; 9. transmission; 10. adjustment assembly. DETAILED DESCRIPTION

[0018] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end portion", "lateral", "lateral", "transverse", "longitudinal", etc. indicating directions or positional relationships, they only correspond to the length and width of the corresponding components, that is, the "end portion" indicates the head and tail areas in the length direction of the corresponding component, and the "side portion" indicates the head and tail areas in the width direction of the corresponding component; this is for the convenience of describing the present invention and is not to indicate or imply that the device or element referred to must have a specific direction.

[0019] Embodiment 1, in combination with the attached Figure 1 A repeated bending test device for aluminum alloy plates includes a fixed base 1, a clamping assembly 2, two groups of internal movable assemblies 3 and a driving assembly 4; the clamping assembly 2 is arranged on the top of the fixed base 1, and the clamping assembly 2 has two clamping parts 21 spaced apart from each other, and at least one clamping part 21 can move forward and backward to facilitate clamping the middle of the sample.

[0020] Furthermore, the bottom of the movable clamping portion 21 has a movable block that movably cooperates with the top surface of the fixed seat 1; further, it also includes an adjustment component 10 for adjusting the position of the clamping portion 21; that is, the position of the movable block is adjusted by the adjustment component 10, thereby achieving the adjustment of the position of the movable clamping portion 21.

[0021] As required, a sliding fit structure 6 is provided between the fixing seat 1 and the movable clamping portion 21 .

[0022] In a possible implementation, the movable clamping part 21 has one; as required, the adjustment assembly 10 can be a structure such as a screw motor, a telescopic device, and an adjustment screw rod. Since the screw motor, the telescopic device, and the adjustment screw rod are all existing conventional devices, their structures and installations are not described in detail here. In this way, the sample can be positioned by the immovable clamping part 21.

[0023] In a possible implementation, there are two movable clamping parts 21; as needed, the adjustment assembly 10 can be a screw motor, a telescopic device, an adjustment screw rod and other structures. It should be noted that the screw motor is a bidirectional screw motor, the telescopic device is a bidirectional telescopic device, and the adjustment screw rod has two screw rods with opposite rotation directions assembled through a connecting piece. Since the bidirectional screw motor, the bidirectional telescopic device, and the adjustment screw rod are all existing conventional devices, their structures and installations are not described in detail here. In this way, the function of centering the clamping template can be realized.

[0024] The two groups of inner movable components 3 are respectively arranged on the left and right sides of the fixed base 1; the inner movable component 3 has a mounting block 31 and two movable parts 32 located on the top surface of the mounting block 31 and spaced apart from each other in the front and back. The movable parts 32 in the same direction as the movable clamping part 21 are movably connected to the top surface of the mounting block 31 in the front and back directions.

[0025] Furthermore, the bottom of the movable active part 32 has a movable block that movably cooperates with the top surface of the mounting block 31; further, it also includes an adjustment component 10 for adjusting the position of the movable part 32; that is, the position of the movable block is adjusted by the adjustment component 10, thereby achieving the adjustment of the position of the movable active part 32.

[0026] In a possible implementation, the movable active part 32 has one; as required, the adjustment assembly 10 can be a structure such as a screw motor, a telescopic device, an adjustment screw rod, etc. Since the screw motor, the telescopic device, and the adjustment screw rod are all existing conventional devices, their structures and installations are not described in detail here. In this way, the sample can be positioned by the immovable movable part 32.

[0027] In a possible implementation, there are two movable active parts 32; as needed, the adjustment assembly 10 can be a screw motor, a telescopic device, an adjustment screw rod and other structures. It should be noted that the screw motor is a bidirectional screw motor, the telescopic device is a bidirectional telescopic device, and the adjustment screw rod has two screw rods with opposite rotation directions assembled through a connecting piece. Since the bidirectional screw motor, the bidirectional telescopic device, and the adjustment screw rod are all existing conventional devices, their structures and installations are not described in detail here. In this way, the function of centering the clamping template can be realized.

[0028] It should be noted that the movable parts 32 in the same direction are located in the same straight line as the side of the template corresponding to the clamping part 21; that is, the two movable parts 32 at the rear are located in the same straight line as the side of the template corresponding to the clamping part 21 at the rear, and the two movable parts 32 at the front are located in the same straight line as the side of the template corresponding to the clamping part 21 at the front.

[0029] The driving assembly 4 is arranged on the fixed seat 1, and the output shaft of the driving assembly 4 is provided with a short connecting rod 5 whose two ends are respectively connected with the inner movable assembly 3, so as to drive the corresponding section of the template to bend repeatedly.

[0030] In a possible implementation, the driving assembly 4 may be a telescopic device, which drives the short connecting rod 5 to move back and forth repeatedly through the reciprocating extension and contraction of the telescopic device, thereby achieving repeated bending tests on the positions on both sides of the clamping portion 21 of the sample.

[0031] In a possible embodiment, the driving assembly 4 may have a motor, and the reciprocating rotation of the motor drives the short connecting rod 5 to rotate repeatedly, thereby realizing repeated bending tests on the positions on both sides of the sample corresponding to the clamping assembly 2. In this way, it can effectively ensure that the sample located between the clamping assembly 2 and the inner movable assembly 3 will not be subjected to axial pulling force, thereby effectively improving the accuracy of the repeated bending test results. For example, the driving assembly 4 includes a driving motor 41 and a reducer 42, the input shaft of the reducer 42 is drivingly connected to the output shaft of the driving motor 41, the output shaft of the reducer 42 faces upward, the middle part of the short connecting rod 5 is correspondingly connected to the output shaft of the reducer 42, and the two ends are respectively connected to the mounting blocks 31 in the two inner movable assemblies 3.

[0032] Furthermore, the middle of the short connecting rod 5 is provided with an upper rotating shaft 51 rotatably connected to the fixed seat 1; the lower end of the upper rotating shaft 51 is fixedly sleeved with a transmission gear 82, and the reducer 42 has two output shafts 421 with opposite rotation speeds and the same speed, and the two output shafts 421 are fixedly sleeved with semicircular gears 43 that can mesh with the transmission gear 82, and the two semicircular gears 43 alternately mesh with the transmission gear 82, so as to drive the lower rotating shaft 81 to reciprocate by ±90 degrees. That is, the two output shafts 421 of the reducer 42 can rotate with opposite rotation speeds and the same speed by the unidirectional rotation of the output shaft of the driving motor 41, and then the two semicircular gears 43 alternately mesh with the transmission gear 82, so that the transmission gear 82 can change the rotation direction once every 180 degrees of rotation.

[0033] This arrangement can also use a driving component 4 to repeatedly bend the sample at the positions on both sides of the clamping component 2, thereby achieving simultaneous testing of two points and effectively improving the testing efficiency.

[0034] Embodiment 2, combined with the attached Figure 1-4 , a repeated bending test device for aluminum alloy plates, based on the first embodiment, the movable part 32 is a roller with a vertical central axis; in this way, the position where the sample is clamped by the inner movable component 3 can be moved relative to the inner movable component 3, which can further reduce the axial pulling force on the sample in the repeated bending test.

[0035] As required, the clamping portion 21 is a rigid roller with a vertical central axis.

[0036] Embodiment 3, in combination with the attached Figure 2-5 , a device for repeatedly bending aluminum alloy plates, based on the first or second embodiment, an outer movable component 7 having the same structure as the inner movable component 3 is provided at intervals on the outer side thereof, and a long connecting rod 8 is provided at intervals below the short connecting rod 5 on the output shaft of the reducer 42, and both ends of the long connecting rod 8 are respectively connected to the outer movable component 7 on the same side. That is, the corresponding section of the sample is clamped by the inner movable component 3 and the outer movable component 7 on the same side.

[0037] In this embodiment, the driving component 4 is implemented with a motor.

[0038] As needed, an upper rotating shaft 51 rotatably connected to the fixed seat 1 is provided in the middle of the short connecting rod 5, and a lower rotating shaft 81 rotatably connected to the fixed seat 1 is provided in the middle of the long connecting rod 8. The lower end of the upper rotating shaft 51 is connected to the upper end of the lower rotating shaft 81 through a transmission 9.

[0039] That is, there is also a repeated bending test point at the position outside the inner movable component 3 of the sample, which realizes the repeated bending test function of four positions of the sample by using a driving component 4, further improving the test efficiency.

[0040] In a possible implementation manner, the rotational speed ratio between the lower rotating shaft 81 and the upper rotating shaft 51 is 2.

[0041] For easy installation, the lower end of the lower rotating shaft 81 is connected to the output shaft of the driving assembly 4; further, in this embodiment, in combination with the attached Figure 3 , 6 The driving assembly 4 includes a driving motor 41 and a reducer 42. The input shaft of the reducer 42 is drivingly connected to the output shaft of the driving motor 41. The output shaft of the reducer 42 faces upward. The middle part of the short connecting rod 5 is correspondingly connected to the output shaft of the reducer 42, and the two ends are respectively connected to the mounting blocks 31 in the two inner movable assemblies 3.

[0042] The lower end of the lower rotating shaft 81 is fixedly sleeved with a transmission gear 82, and the reducer 42 has two output shafts 421 with opposite rotation speeds and the same speed. The two output shafts 421 are fixedly sleeved with semicircular gears 43 that can mesh with the transmission gear 82, and the two semicircular gears 43 alternately mesh with the transmission gear 82, so as to drive the lower rotating shaft 81 to reciprocate by ±90 degrees. That is, the two output shafts 421 of the reducer 42 can rotate with opposite rotation speeds and the same speed by driving the output shaft of the motor 41 in one direction, thereby making the two semicircular gears 43 alternately mesh with the transmission gear 82, so that the transmission gear 82 changes its rotation direction every time it rotates 180 degrees, and realizes the function of repeatedly bending the four test points of the sample.

[0043] It should be noted that the semicircular gear 43 can be understood as a gear body having meshing teeth in a continuous 180-degree area, and another continuous 180-degree area having no meshing teeth and not in contact with the transmission gear 82 .

[0044] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A repeated bending test device for aluminum alloy plates, characterized in that: include: Fixed seat (1); A clamping assembly (2) is arranged on the top of the fixing seat (1), the clamping assembly (2) having two clamping parts (21) arranged at a distance from each other, and at least one of the clamping parts (21) is capable of moving forward and backward to facilitate clamping the middle part of the sample; An inner movable component (3) having two groups, which are respectively arranged on the left and right sides of the fixed seat (1); the inner movable component (3) comprises a mounting block (31) and two movable parts (32) located on the top surface of the mounting block (31) and arranged with a front-to-back interval, and the movable part (32) in the same direction as the movable clamping part (21) is movably connected to the top surface of the mounting block (31) in a front-to-back manner; A driving assembly (4) is disposed on the fixed seat (1), and an output shaft of the driving assembly (4) is provided with short connecting rods (5) whose two ends are respectively connected to the inner movable assembly (3) to facilitate driving the corresponding section of the template to bend repeatedly; The movable portion (32) and the clamping portion (21) in the same direction are located in the same straight line on one side of the corresponding sample plate.

2. The aluminum alloy sheet repeated bending test device according to claim 1, characterized in that: A sliding matching structure (6) is provided between the fixed seat (1) and the movable clamping portion (21), and between the mounting block (31) and the movable portion (32).

3. The aluminum alloy sheet repeated bending test device according to claim 1, characterized in that: The clamping portion (21) is a rigid roller with a vertical central axis.

4. The aluminum alloy sheet repeated bending test device according to claim 1, characterized in that: The movable part (32) is a roller with a vertical central axis.

5. The aluminum alloy sheet repeated bending test device according to claim 1, characterized in that: The driving assembly (4) comprises a driving motor (41) and a reducer (42); the input shaft of the reducer (42) is drivingly connected to the output shaft of the driving motor (41); the output shaft of the reducer (42) faces upward; the middle portion of the short connecting rod (5) is correspondingly connected to the output shaft of the reducer (42), and the two ends are respectively correspondingly connected to the two inner movable assemblies (3).

6. The aluminum alloy sheet repeated bending test device according to claim 5, characterized in that: An outer movable component (7) having the same structure as the inner movable component (3) is provided at intervals on the outer side thereof, and the output shaft of the reducer (42) is also provided with a long connecting rod (8) spaced below the short connecting rod (5), and the two ends of the long connecting rod (8) are respectively connected to the outer movable component (7) on the same side.

7. The aluminum alloy sheet repeated bending test device according to claim 6, characterized in that: An upper rotating shaft (51) rotatably connected to the fixed seat (1) is provided at the middle of the short connecting rod (5), a lower rotating shaft (81) rotatably connected to the fixed seat (1) is provided at the middle of the long connecting rod (8), and the lower end of the upper rotating shaft (51) is connected to the upper end of the lower rotating shaft (81) via a transmission (9).

8. The aluminum alloy sheet repeated bending test device according to claim 7, characterized in that: The lower end of the lower rotating shaft (81) is fixedly sleeved with a transmission gear (82), and the reducer (42) has two output shafts (421) with opposite rotation speeds and the same speed. The two output shafts (421) are both fixedly sleeved with a semicircular gear (43) capable of meshing with the transmission gear (82), and the two semicircular gears (43) are alternately meshed with the transmission gear (82) to drive the lower rotating shaft (81) to reciprocate at ±90 degrees.

9. The aluminum alloy sheet repeated bending test device according to claim 8, characterized in that: The rotation speed ratio between the lower rotating shaft (81) and the upper rotating shaft (51) is 2.

10. The aluminum alloy sheet repeated bending test device according to claim 1, characterized in that: It also includes a plurality of adjustment components (10) for adjusting the position of the clamping portion (21) or the movable portion (32), so as to adjust the position of the clamping portion (21) or the movable portion (32) in a one-to-one correspondence.

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