Alignment degree detection device

Abstract

The invention relates to an alignment degree detection device, which comprises an object carrying mechanism, a movement mechanism and a visual scanning mechanism, and is characterized in that the object carrying mechanism comprises a driving assembly and an object carrying table; a to-be-detected galvanic pile is placed on the objective table, and the objective table is driven by the driving assembly to rotate, so that each side surface of the galvanic pile is driven to sequentially rotate to a scanning range of the visual scanning mechanism. Moreover, under the driving of the driving assembly and the movement mechanism, the objective table and the visual scanning mechanism relatively move in the first direction, the second direction and the third direction, so that the visual scanning mechanism can smoothly obtain the position information of the feeding detection points of the objects on all layers. Next, a fitting straight line can be obtained through fitting according to the obtained position information, and the alignment degree of the electric pile can be obtained by comparing the maximum deviation of each detection point relative to the fitting straight line. Therefore, the alignment degree detection device does not need to be in contact with the electric pile in the detection process, so that the risk of material damage can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell processing, and in particular to an alignment detection device. Background Art

[0002] The alignment of the fuel cell stack is an important indicator of hydrogen fuel cells, which directly affects the electrical performance of the fuel cell stack. Therefore, the alignment test needs to be carried out after the fuel cell stack is processed. At present, the common detection method is greatly affected by human factors, and there is a great risk of damaging materials during the detection process. Summary of the invention

[0003] Based on this, it is necessary to provide an alignment detection device that can reduce the risk of damaging materials in order to address the above problems.

[0004] An alignment detection device, comprising:

[0005] The loading mechanism comprises a driving assembly and a loading platform, wherein the driving assembly can drive the loading platform to rotate around an axis extending along a first direction;

[0006] a motion mechanism disposed on one side of the stage in a second direction, the second direction being perpendicular to the first direction; and

[0007] The visual scanning mechanism is arranged at the moving end of the motion mechanism, and under the drive of the driving component and the motion mechanism, the stage and the visual scanning mechanism can move relatively along the first direction, the second direction and a third direction perpendicular to the first direction and the second direction.

[0008] In one embodiment, the driving component can also drive the stage to move along the second direction, and the motion mechanism can drive the visual scanning mechanism to move along the first direction and the third direction.

[0009] In one embodiment, the driving assembly includes a second guide rail, a second driving structure, a support plate and a rotating structure, the second guide rail extends along the second direction, the support plate can be slidably mounted on the second guide rail and is transmission connected to the second driving structure, and the stage can be rotatably mounted on the support plate and is transmission connected to the rotating structure.

[0010] In one embodiment, the second driving structure includes a second servo motor and a second screw rod, and the second screw rod is connected to the second servo motor and is threadedly matched with the support plate.

[0011] In one embodiment, the two second guide rails are parallel and spaced apart, and two ends of the support plate are slidably mounted on the two second guide rails respectively.

[0012] In one embodiment, the motion mechanism includes a first guide rail, a first driving structure, and a third translation module. The first guide rail extends along the first direction. The third translation module is slidably mounted on the first guide rail and is in transmission connection with the first driving structure. The vision scanning mechanism is mounted on the driving end of the third translation module.

[0013] In one embodiment, the two first guide rails are parallel and spaced apart. The first driving structure includes a first servo motor and a first lead screw in transmission connection with the first servo motor. The first lead screw is located between the two first guide rails, and the first lead screw is in threaded cooperation with the third translation module.

[0014] In one embodiment, it further includes a first marble platform and a second marble platform. The loading mechanism is mounted on the first marble platform, and the motion mechanism is mounted on the second marble platform.

[0015] In one embodiment, the first marble platform and the second marble platform are fixedly connected and perpendicular to each other.

[0016] In one embodiment, the vision scanning mechanism includes a 3D line scan camera.

[0017] For the above alignment detection device, the stack to be detected is placed on the loading table. The loading table rotates under the drive of the drive assembly, thereby driving the sides of the stack to rotate into the scanning range of the vision scanning mechanism in sequence. Moreover, under the drive of the drive assembly and the motion mechanism, the loading table and the vision scanning mechanism move relative to each other in the first direction, the second direction, and the third direction, so that the vision scanning mechanism can smoothly obtain the position information of the feeding detection points on each layer of the object. Then, a fitting straight line can be obtained by fitting according to the obtained position information, and by comparing the maximum deviation of each detection point relative to the fitting straight line, the alignment of the stack can be obtained. It can be seen that the above alignment detection device does not need to contact the stack during the detection process, so the risk of damaging the material can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the alignment detection device in an embodiment of the present invention;

[0020] Figure 2 is Figure 1 a schematic structural view of the loading mechanism in the alignment detection device shown;

[0021] Figure 3 is Figure 1 a schematic structural view of the motion mechanism in the alignment detection device shown. Detailed implementation manners

[0022] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0025] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0028] Please refer to Figure 1 , the alignment detection device 10 in an embodiment of the present invention includes a loading mechanism 100, a motion mechanism 200 and a vision scanning mechanism 300.

[0029] The alignment detection device 10 is used to detect the alignment of the fuel cell stack 20. The stack 20 is stacked by multiple layers of materials such as membrane electrodes, bipolar plates, and end plates. The alignment refers to the degree of alignment of each layer of materials in the thickness direction of the stack 20.

[0030] Please also refer to Figure 2 , the loading mechanism 100 includes a driving component 110 and a loading platform 120. The driving component 110 can drive the loading platform 120 to rotate around an axis extending in the first direction. Among them, the first direction generally refers to the vertical direction in the actual use scenario and is perpendicular to the bearing surface of the loading platform 120. The stack 20 to be detected can be placed on the loading platform 120 and can rotate with the loading platform 120.

[0031] The motion mechanism 200 is arranged on one side of the stage 120 in the second direction, and the vision scanning mechanism 300 is arranged on the moving end of the motion mechanism 200. Specifically, the second direction is perpendicular to the first direction, which can be the front-back direction or the left-right direction in the actual use scenario. The motion mechanism 200 can drive the vision scanning mechanism 300 to translate. In addition to driving the stage 120 to rotate, the driving component 110 can also drive the stage 120 to translate when needed. Among them, under the drive of the driving component 110 and the motion mechanism 200, the stage 120 and the vision scanning mechanism 300 can move relative to each other in the first direction, the second direction, and the third direction perpendicular to the first direction and the second direction.

[0032] When performing the alignment detection, first place the stack to be detected on the stage 120, and then the driving component 110 drives the stage 120 to rotate, so as to drive the sides of the stack to rotate into the scanning range of the vision scanning mechanism 300 in turn. The vision scanning mechanism 300 can perform vision scanning on the items within its scanning range, such as the stack 20. Then, under the combined drive of the driving component 110 and the motion mechanism 200, the stage 120 and the vision scanning mechanism 300 move relative to each other in the first direction, the second direction, and the third direction, so that the vision scanning mechanism 300 can successfully obtain the position information of the detection points on each layer of materials of the stack 20.

[0033] Specifically, in this embodiment, the vision scanning mechanism 300 includes a 3D line scan camera. The scanning accuracy of the 3D line scan camera can reach ±0.01 mm, and the field depth is greater than 10 mm, with a wide range of applications.

[0034] The vision scanning mechanism 300 can upload the position information of each detection point to the host computer system (not shown in the figure). The host computer system can fit a fitting straight line based on the obtained position information, and then by comparing the maximum deviation of each detection point relative to the fitting straight line, the alignment degree of the stack can be obtained. It can be seen that the above alignment detection device 10 can perform non-contact detection without contacting the stack 20 during the detection process, so it can effectively reduce the risk of damaging the materials. At the same time, the detection result is less affected by human factors.

[0035] In this embodiment, the driving component 110 can also drive the stage 120 to move in the second direction, and the motion mechanism 200 can drive the vision scanning mechanism 300 to move in the first direction and the third direction. In this way, the driving component 110 only needs to drive the stage 120 to translate in one direction, and the motion mechanism 200 only needs to drive the vision scanning mechanism 300 to translate in two directions, which helps to simplify the structures of the driving component 110 and the motion mechanism 200.

[0036] When scanning the stack 20, the motion mechanism 200 first drives the vision scanning mechanism 300 to move along the third direction to a set position, and then drives the vision scanning mechanism 300 to move along the first direction to scan the side of the stack 20 from top to bottom. After scanning one position, the motion mechanism 200 then drives the vision scanning mechanism 300 to move along the third direction to the next position, and then drives the vision scanning mechanism 300 to move along the first direction to continue the detection from top to bottom until the entire side of the stack 20 is scanned.

[0037] It should be noted that in other embodiments, the driving assembly 110 can drive the stage 120 to move along the first, second, and third directions, or the motion mechanism 200 can drive the vision scanning mechanism 300 to move along the first, second, and third directions.

[0038] Please refer to again Figure 2 , in this embodiment, the driving assembly 110 includes a second guide rail 111, a second driving structure 112, a support plate 113, and a rotating structure 114. The second guide rail 111 extends along the second direction. The support plate 113 is slidably mounted on the second guide rail 111 and is in transmission connection with the second driving structure 112. The stage 120 is rotatably mounted on the support plate 113 and is in transmission connection with the rotating structure 114.

[0039] The second driving structure 112 can drive the support plate 113 to slide along the second guide rail 111, thereby driving the rotating structure 114 and the stage 120 to translate along the second direction. Specifically, the stage 120 can be mounted on the support plate 113 through the cooperation of a bearing and a bearing seat. The rotating structure 114 can include components such as a motor, a reducer, and a gear.

[0040] Furthermore, in this embodiment, the second driving structure 112 includes a second servo motor 1121 and a second lead screw 1122. The second lead screw 1122 is connected to the second servo motor 1121 and is in threaded cooperation with the support plate 113. A threaded seat (not shown in the figure) can be provided on the support plate 113, and threaded cooperation with the second lead screw 1122 is achieved through the threaded seat. The second servo motor 1121 can drive the second lead screw 1122 to rotate, and the cooperation of the second lead screw 1122 and the threaded seat can convert the rotational motion into a linear motion of the support plate 113, which helps to improve the accuracy and stability of the translation of the stage 120.

[0041] More specifically, in this embodiment, the two second guide rails 111 are parallel and spaced apart. The two ends of the support plate 113 are respectively slidably mounted on the two second guide rails 111. Since both ends in the length direction of the support plate 113 are supported, the stability of the support plate 113 during translation can be further improved.

[0042] Please refer to together Figure 3, in this embodiment, the motion mechanism 200 includes a first guide rail 210, a first driving structure 220, and a third translation module 230. Among them, the first guide rail 210 extends along the first direction, the third translation module 230 is slidably mounted on the first guide rail 210 and is in transmission connection with the first driving structure 220, and the vision scanning mechanism 300 is mounted on the driving end of the third translation module 230.

[0043] The first driving structure 220 can drive the third translation module 230 to slide on the first guide rail 210, and the third translation module 230 can drive the vision scanning mechanism 300 to move along the third direction. In this way, the motion mechanism 200 can drive the vision scanning mechanism 300 to translate in the first direction and the third direction perpendicular to each other. Specifically, the third translation module 230 can adopt a linear motor or a structure combining a guide rail and a servo motor.

[0044] Further, in this embodiment, the two first guide rails 210 are parallel and spaced apart. The first driving structure 220 includes a first servo motor 221 and a first lead screw 222 in transmission connection with the first servo motor 221. The first lead screw 222 is located between the two first guide rails 210, and the first lead screw 222 is in threaded cooperation with the third translation module 230.

[0045] A threaded seat (not shown in the figure) can be provided on the third translation module 230, and threaded cooperation with the first lead screw 222 is achieved through the threaded seat. The first servo motor 221 can drive the first lead screw 222 to rotate, and the cooperation between the first lead screw 222 and the threaded seat can convert the rotational motion into the linear motion of the third translation module 230, which helps to improve the translation accuracy of the third translation module 230. Moreover, both ends of the third translation module 230 are supported by the two bottom guide rails 210 respectively, and since the first lead screw 222 is located between the two first guide rails 210, the force on the third translation module 230 can be more balanced, so the stability of the third translation module 230 during translation can also be effectively improved.

[0046] In addition, please refer to again Figure 1 , in this embodiment, the alignment detection device 10 further includes a first marble platform 400 and a second marble platform 500. The loading mechanism 100 is mounted on the first marble platform 400, and the motion mechanism 200 is mounted on the second marble platform 500.

[0047] The surfaces of the first marble platform 400 and the second marble platform 500 are flat, which can ensure the accuracy of the installation positions of the load-carrying mechanism 100 and the motion mechanism 200, and help reduce the assembly error. Specifically, the second guide rail 111 can be directly installed on the first marble platform 400, and the first guide rail 210 can be directly installed on the second marble platform 500. Moreover, the first marble platform 400 and the second marble platform 500 also have strong rigidity and stability, and the seismic resistance effect is better, which can avoid adverse effects on the test results caused by factors such as vibration.

[0048] Furthermore, in this embodiment, the first marble platform 400 and the second marble platform 500 are fixedly connected and arranged perpendicular to each other.

[0049] After the first marble platform 400 and the second marble platform 500 are fixedly connected, the relative positions of the two can be ensured to be stable. Moreover, after the first marble platform 400 and the second marble platform 50 are spliced and processed as a whole, the levelness and perpendicularity of the installation surfaces of the two can be guaranteed, so as to ensure the straightness of the stage 120 and the vision scanning mechanism 300 during the translation process.

[0050] For the above alignment detection device 10, the fuel cell stack 20 to be detected will be placed on the stage 120. The stage 120 rotates under the drive of the drive assembly 110, so as to drive each side of the fuel cell stack 20 to rotate into the scanning range of the vision scanning mechanism 300 in turn. Moreover, under the drive of the drive assembly 110 and the motion mechanism 200, the stage 120 and the vision scanning mechanism 300 move relative to each other in the first direction, the second direction and the third direction, so that the vision scanning mechanism 300 can smoothly obtain the position information of the feeding detection points on each layer of the object. Then, a fitting straight line can be obtained by fitting according to the obtained position information, and by comparing the maximum deviation of each detection point relative to the fitting straight line, the alignment of the fuel cell stack 20 can be obtained. It can be seen that the above alignment detection device 10 does not need to contact the fuel cell stack 20 during the detection process, so the risk of damaging the material can be effectively reduced.

[0051] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An alignment detection device, characterized in that, Comprising: A load-carrying mechanism, including a driving component and a load-carrying platform, wherein the driving component can drive the load-carrying platform to rotate around an axis extending in the first direction; A motion mechanism, arranged on one side of the load-carrying platform in the second direction, the second direction being perpendicular to the first direction; And A vision scanning mechanism, arranged on the moving end of the motion mechanism, and under the drive of the driving component and the motion mechanism, the load-carrying platform and the vision scanning mechanism can relatively move in the first direction, the second direction, and the third direction perpendicular to the first direction and the second direction.

2. The alignment detection device according to claim 1, wherein The driving component can also drive the load-carrying platform to move in the second direction, and the motion mechanism can drive the vision scanning mechanism to move in the first direction and the third direction.

3. The alignment detection device according to claim 2, wherein The driving component includes a second guide rail, a second driving structure, a support plate, and a rotating structure. The second guide rail extends in the second direction. The support plate is slidably installed on the second guide rail and is in transmission connection with the second driving structure. The load-carrying platform is rotatably installed on the support plate and is in transmission connection with the rotating structure.

4. The alignment detection device according to claim 3, wherein The second driving structure includes a second servo motor and a second lead screw. The second lead screw is connected to the second servo motor and is in threaded cooperation with the support plate.

5. The alignment degree detection device according to claim 3, wherein The two second guide rails are parallel and arranged at intervals. The two ends of the support plate are respectively slidably installed on the two second guide rails.

6. The alignment degree detection device according to claim 2, wherein The motion mechanism includes a first guide rail, a first driving structure, and a third translation module. The first guide rail extends in the first direction. The third translation module is slidably installed on the first guide rail and is in transmission connection with the first driving structure. The vision scanning mechanism is installed at the driving end of the third translation module.

7. The alignment detection device according to claim 6, wherein The two first guide rails are parallel and arranged at intervals. The first driving structure includes a first servo motor and a first lead screw in transmission connection with the first servo motor. The first lead screw is located between the two first guide rails, and the first lead screw is in threaded cooperation with the third translation module.

8. The alignment detection device according to claim 1, characterized in that It further includes a first marble platform and a second marble platform. The load-carrying mechanism is installed on the first marble platform, and the motion mechanism is installed on the second marble platform.

9. The alignment degree detection device according to claim 8, wherein, The first marble platform and the second marble platform are fixedly connected and are perpendicular to each other.

10. The alignment detection device according to claim 1, characterized in that, The vision scanning mechanism includes a 3D line-scanning camera.

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