A flexible hinge characteristic automatic testing device

Abstract

The present invention discloses an automatic testing device for the characteristics of a flexible hinge, comprising an automatic clamping mechanism, an execution mechanism and an image acquisition mechanism; the automatic clamping mechanism comprises a clamping platform, a clamping assembly and a clamping drive mechanism; the clamping assembly comprises a clamping slider and a clamping reset spring; the clamping slider is horizontally slidably connected to the clamping platform; the clamping reset spring is used to prompt the clamping slider to return to its original position; the clamping drive mechanism comprises a clamping drive motor and a clamping transmission assembly; the clamping transmission belt is connected between four movable pulleys; the execution mechanism comprises an execution tool and an execution drive mechanism for driving the execution tool to act on the flexible hinge; the image acquisition mechanism comprises a camera for acquiring an image of the flexible hinge. The automatic testing device can automatically test the flexible hinge, which is conducive to improving work efficiency, reducing test errors, and obtaining more accurate test results.

Description

Technical Field

[0001] The invention relates to a flexible hinge testing device, in particular to an automatic testing device for flexible hinge characteristics. Background Art

[0002] A compliant mechanism is a new type of assembly-free mechanism that uses the elastic deformation of flexible elements rather than the movement of rigid elements to transmit or convert motion, force or energy. Compared with traditional rigid mechanisms, it has the advantages of high precision, no friction and wear, no need for lubrication, no assembly, and low manufacturing cost. It overcomes the defects of the traditional mechanism's kinematic pairs that have gaps and frictions and are difficult to achieve precise transmission. According to the presence or absence of flexible elements, it can be divided into centralized compliant mechanisms and distributed compliant mechanisms. Among them, the centralized compliant mechanism is composed of flexible elements and rigid connecting rods. The precise transmission of motion and power is achieved by controlling the deformation of the flexible elements. This type of compliant mechanism is widely used in practical engineering.

[0003] Flexible hinges are the main manifestation of flexible elements. They provide relative motion through their own elastic deformation. They are the core components of compliant mechanisms and the key to achieving high-precision, high-efficiency, stable and reliable operation of the system. In recent years, with the rapid development and application of micro-nano manufacturing technology, the requirements for large stroke, high resolution and high frequency response of compliant mechanisms have become increasingly higher. The design method of the core component of the corresponding compliant mechanism, the flexible hinge, has become an important topic that urgently needs in-depth research.

[0004] During the development process, it is often necessary to test the various characteristics of the flexible hinge to verify whether the flexible hinge meets specific requirements. For example, see Figure 1 , it is necessary to act on the flexible hinge 1 in the direction of the arrow, and at the same time obtain the change of the top transmission gap through the camera to obtain the corresponding test result. However, the existing flexible hinge test work is mostly completed manually or by semi-automatic machines, which not only has low test efficiency, but also has large errors in manual operation, which is not conducive to obtaining accurate test results. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned problems and provide an automatic testing device for the characteristics of a flexible hinge, which can automatically test the flexible hinge, thereby improving work efficiency, reducing test errors, and obtaining more accurate test results.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A flexible hinge characteristic automatic testing device comprises an automatic clamping mechanism for clamping the flexible hinge, an execution mechanism for providing a test force, and an image acquisition mechanism;

[0008] The automatic clamping mechanism comprises a clamping platform, a clamping assembly and a clamping driving mechanism; the clamping assembly is provided with four groups and respectively corresponds to four sides of the flexible hinge, and each group of clamping assemblies comprises a clamping slider and a clamping return spring; the clamping slider is horizontally slidably connected to the clamping platform; the two ends of the clamping return spring act on the clamping slider and the clamping platform respectively, and the clamping return spring is used to prompt the clamping slider to return to its original position; the clamping driving mechanism comprises a clamping driving motor and a clamping transmission assembly, and the clamping transmission assembly comprises a swing arm, a movable pulley and a clamping transmission belt; one end of the swing arm is connected to the driving end of the clamping driving motor, and the other end of the swing arm is provided with an extrusion portion for pressing on the clamping transmission belt; the movable pulley is provided with four and respectively rotatably connected to the clamping sliders of the four groups of clamping assemblies; the clamping transmission belt is connected between the four movable pulleys;

[0009] The execution mechanism includes an execution tool and an execution drive mechanism for driving the execution tool to act on the flexible hinge;

[0010] The image acquisition mechanism includes a camera for acquiring an image of the flexible hinge.

[0011] The working principle of the above-mentioned automatic testing device for the characteristics of flexible hinges is as follows:

[0012] During operation, the flexible hinge is placed on the center position of the four clamping assemblies on the clamping platform. At this time, the clamping slide blocks of the four clamping assemblies are all in place; the swing arm is driven to swing by the clamping drive motor, so that the extrusion part of the swing arm is close to the clamping transmission belt; when the extrusion part of the swing arm is pressed against the clamping transmission belt, the clamping transmission belt will be tightened, which is equivalent to continuously pulling the clamping transmission belt at the swing arm, so that the clamping transmission belt gradually moves toward the position of the swing arm; at this time, the clamping transmission belt will drive all the clamping slide blocks to perform a closing operation, that is, the four groups of clamping slide blocks slide toward the flexible hinge in the center at the same time until the clamping The sliders are clamped in pairs on different sides of the clamping sliders; among them, since the four groups of clamping sliders are connected in series through adaptively adjustable movable pulleys and clamping transmission belts, they can be adaptively clamped even when facing flexible hinges with different side widths: when the clamping slider with a smaller distance from the flexible hinge is clamped on the side of the flexible hinge, the clamping slider remains stationary, and the movable pulley corresponding to the clamping slider becomes a guide wheel, and then the clamping slider with a larger distance from the flexible hinge can be driven by the clamping transmission belt to approach the flexible hinge until all the clamping sliders are attached to the side of the flexible hinge, thereby completing the clamping work.

[0013] The execution tool is driven by the execution drive motor to approach and act on the flexible hinge; at the same time, the image of the flexible hinge is obtained by the camera for subsequent analysis. Combined with data such as the action distance of the execution tool, the relevant characteristics of the flexible hinge can be obtained.

[0014] A preferred solution of the present invention, wherein the clamping transmission assembly further comprises four groups of guide wheels; each group of guide wheels comprises at least one guide wheel; each group of guide wheels is located between two different clamping slide blocks; and the guide wheels are rotatably connected to the clamping platform.

[0015] Furthermore, each set of guide wheels includes two guide wheels; the clamping drive belt is wound from one guide wheel of one set to the output shaft of the clamping drive motor, and then from the output shaft of the clamping drive motor to the other guide wheel of one set. Through the above structure, on the one hand, the clamping drive belt can be set near the swing arm, which is convenient for squeezing and tightening operations; on the other hand, after the clamping drive belt passes around the output shaft of the clamping drive motor, when the swing arm squeezes the clamping drive belt at this position on one side, it is equivalent to grabbing two sections of the clamping drive belt at the same time for winding, which is conducive to reducing the squeezing amplitude of the swing arm and increasing the clamping speed, which is very clever.

[0016] A preferred solution of the present invention, wherein the automatic clamping mechanism further includes a rotation drive mechanism, which includes a rotation drive motor and a rotation transmission assembly; the rotation drive motor is fixedly arranged on the platform mounting frame; the rotation transmission assembly includes a first driving gear and a first driven gear; the first driving gear is rotatably connected to the platform mounting frame, the axis of the first driving gear extends vertically, and the first driving gear is fixedly connected to the clamping platform; the first driven gear is connected to the output shaft of the rotation drive motor. Through the above structure, the clamping platform can be driven to rotate, thereby adjusting the posture of the flexible hinge to adapt to different test requirements.

[0017] Furthermore, the automatic clamping mechanism also includes a vertical driving mechanism, which includes a vertical driving motor and a vertical transmission assembly; the vertical driving motor is fixedly arranged on the frame; the vertical transmission assembly includes a vertical transmission frame, a vertical screw and a vertical screw nut; the vertical transmission frame constitutes the platform mounting frame; the vertical screw nut is fixedly connected to the vertical transmission frame. Through the above structure, the clamping platform can be driven to move vertically, thereby adjusting the height of the flexible hinge to meet different test requirements.

[0018] A preferred solution of the present invention, wherein the execution drive mechanism includes an execution mounting frame, a switching turntable, an execution drive motor and an execution transmission assembly; the switching turntable is rotatably connected to the execution mounting frame, and a locking structure for locking the switching turntable is provided between the switching turntable and the execution mounting frame; the execution drive motor is fixedly arranged on the execution mounting frame; the execution transmission assembly includes a second driving gear and a second driven gear; the second driving gear is connected to the output shaft of the execution drive motor; at least two second driven gears are provided and both are rotatably connected to the switching turntable; different second driven gears are connected to different execution tools. Through the above structure, a variety of different test modes can be set. By rotating the switching turntable, the second driving gear is meshed with different second driven gears, thereby switching to different test modes and performing different test tasks, and the function is more powerful.

[0019] Further, one of the second driven gears is connected to the execution tool through a bidirectional synchronous transmission structure, and the bidirectional synchronous transmission structure includes a synchronous screw assembly, a swing rod and a sliding rod; the synchronous screw assembly includes a synchronous screw and a synchronous screw nut; the synchronous screw is coaxially fixedly connected to the second driven gear; the swing rod and the sliding rod are each provided with two; the two sliding rods are arranged in parallel on both sides of the synchronous screw; the two swing rods are respectively hinged between the two sliding rods and the synchronous screw nut; one end of the sliding rod is slidably connected to the switching turntable; the execution tool is provided with two and is respectively connected to the other end of the sliding rod through a detachable structure; in a non-working state, the execution tool is not installed on the sliding rod. Through the above structure, after the second driven gear corresponding to the bidirectional synchronous transmission structure is engaged with the second driving gear, under the drive of the execution drive motor, the synchronous screw drives the synchronous screw nut to move linearly, and at this time, the two swing rods swing, pushing the sliding rods on both sides to slide toward each other or back to back, so that the execution tool is close to the flexible hinge or away from the flexible hinge, and then completes the corresponding test work.

[0020] Furthermore, one of the second driven gears is connected to the execution tool through a push-pull transmission structure, and the push-pull transmission structure includes a push-pull screw rod, a push-pull screw rod nut and a push-pull mounting block; the push-pull screw rod is coaxially fixedly connected to the second driven gear; the push-pull screw rod nut is fixedly connected to the push-pull mounting block; the push-pull mounting block is connected to the execution tool through a detachable structure; in a non-working state, the execution tool is not installed on the push-pull mounting block. Through the above structure, after the second driven gear corresponding to the push-pull transmission structure is meshed with the second driving gear, under the drive of the execution drive motor, the execution tool is driven by the push-pull screw rod and the push-pull screw rod nut to move linearly, so as to approach the flexible hinge or move away from the flexible hinge, and then complete the corresponding test work.

[0021] Furthermore, one of the second driven gears is connected to the execution tool through a torsion mounting seat; the torsion mounting seat is connected to the execution tool through a detachable structure; in a non-working state, the execution tool is not mounted on the torsion mounting seat. Through the above structure, after the second driven gear corresponding to the torsion mounting seat is meshed with the second driving gear, the torsion mounting seat will drive the execution tool to apply a torsion force under the drive of the execution drive motor.

[0022] In a preferred embodiment of the present invention, the execution mechanism further comprises a transverse driving mechanism, which comprises a transverse driving motor and a transverse transmission assembly; the transverse driving motor is fixedly mounted on a frame; the transverse transmission assembly comprises a transverse screw and a transverse screw nut; the transverse screw nut is fixedly connected to an execution mounting frame; the execution driving mechanism is arranged on the execution mounting frame. Through the above structure, the execution driving mechanism and the execution tool can be driven to move laterally, thereby adjusting the distance between the execution tool and the flexible hinge to meet different test requirements.

[0023] In a preferred embodiment of the present invention, the image acquisition mechanism further comprises a position adjustment mechanism for adjusting the position of the camera, the position adjustment mechanism comprises an adjustment mounting frame, an adjustment drive motor and an adjustment transmission assembly; the adjustment drive motor is fixedly arranged on the adjustment mounting frame; the adjustment transmission assembly comprises an adjustment drive belt and an adjustment drive pulley, the adjustment drive belt comprises a horizontal section and a vertical section; a plurality of adjustment drive pulleys are provided, one of which is connected to the adjustment drive motor;

[0024] When the camera is located on the horizontal section of the adjustable transmission belt, the camera is located above the clamping platform and is used to obtain the image of the flexible hinge downward; when the camera is located on the vertical section of the adjustable transmission belt, the camera is located on the side of the clamping platform. Through the above structure, the orientation of the camera can be adjusted to meet different shooting requirements.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The automatic testing device of the present invention can automatically test the flexible hinge, which is beneficial to improving work efficiency, reducing test errors, and obtaining more accurate test results.

[0027] 2. By setting a swing arm, a movable pulley and a clamping transmission belt, the swing arm squeezes the clamping transmission belt to drive all the clamping slide blocks to move and complete the clamping. The structure is very clever and compact, which can reduce costs.

[0028] 3. When facing flexible hinges with different side widths, clamping can also be performed adaptively: when the clamping slider with a smaller distance from the flexible hinge is clamped on the side of the flexible hinge, the clamping slider remains stationary, and the movable pulley corresponding to the clamping slider becomes a guide wheel, and then the clamping transmission belt can be used to drive the clamping slider with a larger distance from the flexible hinge to approach the flexible hinge until all the clamping sliders are attached to the side of the flexible hinge. It is suitable for flexible hinges of various shapes and has better versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a front view of an existing flexible hinge.

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the automatic testing device for the characteristics of flexible hinges of the present invention.

[0031] Figure 3-4 It is a front view of the automatic testing device for the characteristics of flexible hinges of the present invention under different testing operations.

[0032] Figure 5-6 It is a schematic diagram of the three-dimensional structure from two different perspectives of the automatic clamping mechanism of the present invention excluding the rotating drive mechanism.

[0033] Figure 7 It is a three-dimensional structural schematic diagram of the rotary drive mechanism of the automatic clamping mechanism of the present invention.

[0034] Figure 8 It is a three-dimensional structural schematic diagram of the execution mechanism of the present invention.

[0035] Fig. 9 The three-dimensional structural schematic diagram of another viewing angle of the execution mounting frame is hidden for the execution mechanism of the present invention. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0037] See also Figure 2 and Figure 5-6The automatic testing device for the characteristics of flexible hinges of this embodiment comprises an automatic clamping mechanism for clamping the flexible hinge 1, an execution mechanism for providing a test force, and an image acquisition mechanism; the automatic clamping mechanism comprises a clamping platform 2, a clamping assembly, and a clamping drive mechanism; the clamping assembly is provided with four groups corresponding to the four sides of the flexible hinge 1, and each group of clamping assemblies comprises a clamping slider 3 and a clamping reset spring 4; the clamping slider 3 is horizontally slidably connected to the clamping platform 2; the two ends of the clamping reset spring 4 act on the clamping slider respectively. 3 and the clamping platform 2, the clamping reset spring 4 is used to prompt the clamping slider 3 to return to its original position; the clamping drive mechanism includes a clamping drive motor 5 and a clamping transmission assembly, and the clamping transmission assembly includes a swing arm 6, a movable pulley 7 and a clamping transmission belt 8; one end of the swing arm 6 is connected to the driving end of the clamping drive motor 5, and the other end of the swing arm 6 is provided with a squeezing portion 6-1 for pressing on the clamping transmission belt 8; the movable pulley 7 is provided with four and is respectively rotatably connected to the clamping sliders 3 of the four clamping assemblies; the clamping transmission belt 8 is connected between the four movable pulleys 7.

[0038] See also Figure 8-9 The execution mechanism includes an execution tool 9, an execution drive mechanism for driving the execution tool 9 to act on the flexible hinge 1, and a lateral drive mechanism.

[0039] See also Figure 5-6 The clamping transmission assembly also includes four groups of guide wheels 11; each group of guide wheels 11 includes at least one guide wheel 11; each group of guide wheels 11 is located between two different clamping slide blocks 3; the guide wheels 11 are rotatably connected to the clamping platform 2.

[0040] Furthermore, each set of guide wheels 11 includes two guide wheels 11; the clamping drive belt 8 is wound from one guide wheel 11 of one set to the output shaft of the clamping drive motor 5, and then from the output shaft of the clamping drive motor 5 to the other guide wheel 11 of one set. Through the above structure, on the one hand, the clamping drive belt 8 can be set near the swing arm 6, which is convenient for squeezing and tightening operations; on the other hand, after the clamping drive belt 8 passes around the output shaft of the clamping drive motor 5, when the swing arm 6 squeezes the clamping drive belt 8 at this position on one side, it is equivalent to grabbing two sections of the clamping drive belt 8 at the same time for winding, which is conducive to reducing the squeezing range of the swing arm 6 and increasing the clamping speed, which is very clever.

[0041] See also Figure 2-4 and Figure 7The automatic clamping mechanism also includes a rotation drive mechanism, which includes a rotation drive motor 12 and a rotation transmission assembly; the rotation drive motor 12 is fixedly arranged on the platform mounting frame; the rotation transmission assembly includes a first driving gear 13 and a first driven gear 14; the first driving gear 13 is rotatably connected to the platform mounting frame, the axis of the first driving gear 13 extends vertically, and the first driving gear 13 is fixedly connected to the clamping platform 2; the first driven gear 14 is connected to the output shaft of the rotation drive motor 12. Through the above structure, the clamping platform 2 can be driven to rotate, thereby adjusting the posture of the flexible hinge 1 to adapt to different test requirements.

[0042] See also Figure 2-4 The automatic clamping mechanism also includes a vertical driving mechanism, which includes a vertical driving motor 15 and a vertical transmission assembly; the vertical driving motor 15 is fixedly arranged on a frame 16; the vertical transmission assembly includes a vertical transmission frame 17, a vertical screw rod 18 and a vertical screw rod nut; the vertical transmission frame 17 constitutes the platform mounting frame; the vertical screw rod nut is fixedly connected to the vertical transmission frame 17. Through the above structure, the clamping platform 2 can be driven to move vertically, thereby adjusting the height of the flexible hinge 1 to meet different test requirements.

[0043] See also Figure 2-4 and Figure 8-9 The execution drive mechanism includes an execution mounting frame 19, a switching turntable 20, an execution drive motor 21 and an execution transmission assembly; the switching turntable 20 is rotatably connected to the execution mounting frame 19, and a locking structure for locking the switching turntable 20 is provided between the switching turntable 20 and the execution mounting frame 19; the execution drive motor 21 is fixedly arranged on the execution mounting frame 19; the execution transmission assembly includes a second driving gear 22 and a second driven gear 23; the second driving gear 22 is connected to the output shaft of the execution drive motor 21; the second driven gear 23 is provided with at least two and both are rotatably connected to the switching turntable 20; different second driven gears 23 are connected to different execution tools 9. Through the above structure, a variety of different test modes can be set. By rotating the switching turntable 20, the second driving gear 22 is meshed with different second driven gears 23, thereby switching to different test modes and performing different test work, and the function is more powerful.

[0044] See also Figure 8-9, one of the second driven gears 23 is connected to the execution tool 9 through a two-way synchronous transmission structure, and the two-way synchronous transmission structure includes a synchronous screw assembly, a rocker rod 24 and a sliding rod 25; the synchronous screw assembly includes a synchronous screw 26 and a synchronous screw nut 27; the synchronous screw 26 is coaxially fixedly connected to the second driven gear 23; the rocker rod 24 and the sliding rod 25 are each provided with two; the two sliding rods 25 are arranged in parallel on both sides of the synchronous screw 26; the two rocker rods 24 are respectively hinged between the two sliding rods 25 and the synchronous screw nut 27; one end of the sliding rod 25 is slidably connected to the switching turntable 20; the execution tool 9 is provided with two and is connected to the other end of the sliding rod 25 through a detachable structure respectively; in the non-working state, the execution tool 9 is not installed on the sliding rod 25. Through the above structure, after the second driven gear 23 corresponding to the bidirectional synchronous transmission structure is meshed with the second driving gear 22, under the drive of the execution drive motor 21, the synchronous screw 26 drives the synchronous screw nut 27 to move linearly. At this time, the two rocker arms 24 swing, pushing the sliding rods 25 on both sides to slide toward each other or away from each other, so that the execution tool 9 is close to the flexible hinge 1 or away from the flexible hinge 1, and then completes the corresponding test work.

[0045] See also Figure 8-9 , one of the second driven gears 23 is connected to the execution tool 9 through a push-pull transmission structure, and the push-pull transmission structure includes a push-pull screw rod 28, a push-pull screw rod nut and a push-pull mounting block 29; the push-pull screw rod 28 is coaxially fixedly connected to the second driven gear 23; the push-pull screw rod nut is fixedly connected to the push-pull mounting block 29; the push-pull mounting block 29 is connected to the execution tool 9 through a detachable structure; in a non-working state, the execution tool 9 is not installed on the push-pull mounting block 29. Through the above structure, after the second driven gear 23 corresponding to the push-pull transmission structure is meshed with the second driving gear 22, under the drive of the execution drive motor 21, the execution tool 9 is driven by the push-pull screw rod 28 and the push-pull screw rod nut to move linearly, thereby approaching the flexible hinge 1 or moving away from the flexible hinge 1, and then completing the corresponding test work, such as Figure 3 .

[0046] See also Figure 8-9 , one of the second driven gears 23 is connected to the execution tool 9 through the torsion mounting seat 30; the torsion mounting seat 30 is connected to the execution tool 9 through a detachable structure; in a non-working state, the execution tool 9 is not mounted on the torsion mounting seat 30. Through the above structure, after the second driven gear 23 corresponding to the torsion mounting seat 30 is engaged with the second driving gear 22, under the drive of the execution drive motor 21, the torsion mounting seat 30 drives the execution tool 9 to apply a torsion force.

[0047] See also Figure 2-4The lateral drive mechanism includes a lateral drive motor 31 and a lateral transmission assembly; the lateral drive motor 31 is fixedly arranged on the frame 16; the lateral transmission assembly includes a lateral screw and a lateral screw nut; the lateral screw nut is fixedly connected to the execution mounting frame 19; the execution drive mechanism is arranged on the execution mounting frame 19. Through the above structure, the execution drive mechanism and the execution tool 9 can be driven to move horizontally, so as to adjust the distance between the execution tool 9 and the flexible hinge 1 to meet different test requirements.

[0048] See also Figure 2-4 , the image acquisition mechanism includes a camera 10 for acquiring an image of the flexible hinge 1 and a position adjustment mechanism for adjusting the position of the camera 10. The position adjustment mechanism includes an adjustment mounting frame 32, an adjustment drive motor 33 and an adjustment transmission assembly; the adjustment drive motor 33 is fixedly arranged on the adjustment mounting frame 32; the adjustment transmission assembly includes an adjustment drive belt 34 and an adjustment drive pulley 35, and the adjustment drive belt 34 includes a horizontal section and a vertical section; there are multiple adjustment drive pulleys 35, one of which is connected to the adjustment drive motor 33; when the camera 10 is located on the horizontal section of the adjustment drive belt 34, the camera 10 is located above the clamping platform 2 and is used to acquire the image of the flexible hinge 1 downward; when the camera 10 is located on the vertical section of the adjustment drive belt 34, the camera 10 is located on the side of the clamping platform 2. Through the above structure, the orientation of the camera 10 can be adjusted to meet different shooting requirements.

[0049] See also Figure 2-6 The working principle of the automatic testing device for the characteristics of flexible hinges in this embodiment is as follows:

[0050] During operation, the flexible hinge 1 is placed on the clamping platform 2 at the center position of the four clamping assemblies. At this time, the clamping slide blocks 3 of the four clamping assemblies are all in place; the swing arm 6 is driven to swing by the clamping drive motor 5, so that the extrusion portion 6-1 of the swing arm 6 is close to the clamping transmission belt 8; when the extrusion portion 6-1 of the swing arm 6 is squeezed onto the clamping transmission belt 8, the clamping transmission belt 8 will be tightened, which is equivalent to continuously pulling the clamping transmission belt 8 at the swing arm 6, so that the clamping transmission belt 8 gradually moves toward the position of the swing arm 6; at this time, the clamping transmission belt 8 will drive all the clamping slide blocks 3 to perform a closing operation, that is, the four groups of clamping slide blocks 3 slide toward the flexible hinge 1 located in the center at the same time until The clamping sliders 3 are clamped in pairs on different sides of the clamping sliders 3; among them, since the four groups of clamping sliders 3 are connected in series through the adaptively adjustable movable pulleys 7 and the clamping transmission belts 8, even when facing the flexible hinges 1 with different side widths, they can be adaptively clamped: when the clamping slider 3 with a smaller distance from the flexible hinge 1 is clamped on the side of the flexible hinge 1, the clamping slider 3 remains stationary, and the movable pulley 7 corresponding to the clamping slider 3 becomes a guide wheel 11, and then the clamping slider 3 with a larger distance from the flexible hinge 1 can be driven by the clamping transmission belts 8 to approach the flexible hinge 1 until all the clamping sliders 3 are attached to the side of the flexible hinge 1, and the clamping work is completed.

[0051] The execution tool 9 is driven by the execution driving motor 21 to approach and act on the flexible hinge 1; at the same time, the image of the flexible hinge 1 is obtained by the camera 10 for subsequent analysis. Combined with data such as the action distance of the execution tool 9, the relevant characteristics of the flexible hinge 1 can be obtained.

[0052] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A flexible hinge characteristic automatic testing device, characterized in that: It includes an automatic clamping mechanism for clamping the flexible hinge, an execution mechanism for providing a test force, and an image acquisition mechanism; The automatic clamping mechanism comprises a clamping platform, a clamping assembly and a clamping driving mechanism; the clamping assembly is provided with four groups and respectively corresponds to four sides of the flexible hinge, and each group of clamping assemblies comprises a clamping slider and a clamping return spring; the clamping slider is horizontally slidably connected to the clamping platform; the two ends of the clamping return spring act on the clamping slider and the clamping platform respectively, and the clamping return spring is used to prompt the clamping slider to return to its original position; the clamping driving mechanism comprises a clamping driving motor and a clamping transmission assembly, and the clamping transmission assembly comprises a swing arm, a movable pulley and a clamping transmission belt; one end of the swing arm is connected to the driving end of the clamping driving motor, and the other end of the swing arm is provided with an extrusion portion for pressing on the clamping transmission belt; the movable pulley is provided with four and respectively rotatably connected to the clamping sliders of the four groups of clamping assemblies; the clamping transmission belt is connected between the four movable pulleys; The execution mechanism includes an execution tool and an execution drive mechanism for driving the execution tool to act on the flexible hinge; the execution drive mechanism includes an execution mounting frame, a switching turntable, an execution drive motor and an execution transmission assembly; the switching turntable is rotatably connected to the execution mounting frame, and a locking structure for locking the switching turntable is provided between the switching turntable and the execution mounting frame; the execution drive motor is fixedly arranged on the execution mounting frame; the execution transmission assembly includes a second driving gear and a second driven gear; the second driving gear is connected to the output shaft of the execution drive motor; at least two second driven gears are provided and both are rotatably connected to the switching turntable; different second driven gears are connected to different execution tools; The image acquisition mechanism includes a camera for acquiring an image of the flexible hinge.

2. The automatic testing device for flexible hinge characteristics according to claim 1, characterized in that: The clamping transmission assembly also includes four sets of guide wheels; each set of guide wheels includes at least one guide wheel; each set of guide wheels is located between two different clamping slide blocks; the guide wheels are rotatably connected to the clamping platform; Each set of guide wheels includes two guide wheels; the clamping drive belt is wound from one guide wheel of one set to the output shaft of the clamping drive motor, and then from the output shaft of the clamping drive motor to the other guide wheel of one set.

3. The automatic testing device for flexible hinge characteristics according to claim 1, characterized in that: The automatic clamping mechanism also includes a rotation drive mechanism, which includes a rotation drive motor and a rotation transmission assembly; the rotation drive motor is fixedly arranged on the platform mounting frame; the rotation transmission assembly includes a first driving gear and a first driven gear; the first driving gear is rotatably connected to the platform mounting frame, the axis of the first driving gear extends vertically, and the first driving gear is fixedly connected to the clamping platform; the first driven gear is connected to the output shaft of the rotation drive motor.

4. The automatic testing device for flexible hinge characteristics according to claim 3 is characterized in that: The automatic clamping mechanism also includes a vertical driving mechanism, which includes a vertical driving motor and a vertical transmission assembly; the vertical driving motor is fixedly arranged on the frame; the vertical transmission assembly includes a vertical transmission frame, a vertical screw rod and a vertical screw rod nut; the vertical transmission frame constitutes the platform mounting frame; the vertical screw rod nut is fixedly connected to the vertical transmission frame.

5. The automatic testing device for flexible hinge characteristics according to claim 1, characterized in that: One of the second driven gears is connected to the execution tool through a two-way synchronous transmission structure, and the two-way synchronous transmission structure includes a synchronous screw assembly, a rocker rod and a sliding rod; the synchronous screw assembly includes a synchronous screw and a synchronous screw nut; the synchronous screw is coaxially fixedly connected to the second driven gear; there are two rocker rods and two sliding rods; the two sliding rods are arranged in parallel on both sides of the synchronous screw; the two rocker rods are respectively hinged between the two sliding rods and the synchronous screw nut; one end of the sliding rod is slidably connected to the switching turntable; the execution tool is provided with two and is connected to the other end of the sliding rod through a detachable structure respectively; in a non-working state, the execution tool is not installed on the sliding rod.

6. The automatic testing device for flexible hinge characteristics according to claim 1, characterized in that: One of the second driven gears is connected to the execution tool through a push-pull transmission structure, and the push-pull transmission structure includes a push-pull screw rod, a push-pull screw rod nut and a push-pull mounting block; the push-pull screw rod is coaxially fixedly connected to the second driven gear; the push-pull screw rod nut is fixedly connected to the push-pull mounting block; the push-pull mounting block is connected to the execution tool through a detachable structure; in a non-working state, the execution tool is not installed on the push-pull mounting block.

7. The automatic testing device for flexible hinge characteristics according to claim 1, characterized in that: One of the second driven gears is connected to the execution tool via a torsion mounting seat; the torsion mounting seat is connected to the execution tool via a detachable structure; in a non-working state, the execution tool is not mounted on the torsion mounting seat.

8. The automatic testing device for flexible hinge characteristics according to claim 1, characterized in that: The execution mechanism also includes a transverse driving mechanism, which includes a transverse driving motor and a transverse transmission assembly; the transverse driving motor is fixedly arranged on the frame; the transverse transmission assembly includes a transverse screw and a transverse screw nut; the transverse screw nut is fixedly connected to the execution mounting frame; the execution driving mechanism is arranged on the execution mounting frame.

9. The automatic testing device for flexible hinge characteristics according to any one of claims 1 to 8, characterized in that: The image acquisition mechanism also includes a position adjustment mechanism for adjusting the position of the camera, the position adjustment mechanism includes an adjustment mounting frame, an adjustment drive motor and an adjustment transmission assembly; the adjustment drive motor is fixedly arranged on the adjustment mounting frame; the adjustment transmission assembly includes an adjustment drive belt and an adjustment drive pulley, the adjustment drive belt includes a horizontal section and a vertical section; there are multiple adjustment drive pulleys, one of which is connected to the adjustment drive motor; When the camera is located on the horizontal section of the adjustable transmission belt, the camera is located above the clamping platform and is used to obtain the image of the flexible hinge downward; when the camera is located on the vertical section of the adjustable transmission belt, the camera is located on the side of the clamping platform.

Images