CN212274862U

CN212274862U - Plate measuring device and calibration plate

Info

Publication number: CN212274862U
Application number: CN202020933572.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Jiangsu hydrogen guide intelligent equipment Co.,Ltd.
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-01-01
Anticipated expiration: 2030-05-28

Abstract

The utility model relates to a plate measuring device, bear the mechanism including workstation, transplanting mechanism, position sensor and panel. The plate bearing mechanism comprises a carrier, and the carrier can provide lateral supporting force for the plate to be detected so as to position the plate to be detected on the carrier and form avoidance on two opposite surfaces of the plate to be detected. The carrier can drive the plate to be measured to move to the measuring station. Moreover, the carrier realizes the positioning of the plate through the lateral holding force so as to form avoidance positions on two opposite sides of the plate, so the surfaces on the two sides of the plate can be respectively exposed to the first sensor and the second sensor. Under the drive of the transfer mechanism, the first sensor and the second sensor can realize global scanning on two sides of the plate, so that complete point cloud information of the surfaces on the two sides of the plate is obtained. After the point cloud information is obtained, the point cloud information can be uploaded to a computer system for processing, 3D model reconstruction of the plate is achieved, and all dimensions of the plate can be accurately measured. Furthermore, the utility model also provides a calibration plate.

Description

Plate measuring device and calibration plate

Technical Field

The utility model relates to an industrial measurement technical field, in particular to panel measuring device and calibration board.

Background

In the field of production processing, it is often necessary to accurately measure the dimensions of a sheet material to determine whether it meets accuracy requirements. For example, the bipolar plates of a fuel cell are important performance elements in a fuel cell stack, which are responsible for distributing fuel and air to the two electrode surfaces and dissipating heat from the stack. In order to achieve the effects of more sufficient reaction of fuel and air, good sealing performance, size reduction of a galvanic pile and the like, the method has very high tolerance requirements on the width and depth of a channel on the bipolar plate, the width and height of sealing adhesive glue and the thickness of the bipolar plate.

At present, the more common measurement methods for the above-mentioned plate-like materials are based on image analysis. However, the measurement accuracy of the measurement method is poor, and the fine structure on the surface of the plate cannot be accurately represented, so that whether the size of the plate meets the accuracy requirement cannot be judged.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a plate measuring device capable of improving the measurement accuracy, aiming at the problem that the conventional measurement method is not high in accuracy.

A sheet material measuring device comprising:

a work table;

the transfer mechanism is arranged on the workbench;

the position sensor can acquire point cloud information and comprises a first sensor and a second sensor which are arranged on the transferring mechanism and can synchronously move along a preset path under the driving of the transferring mechanism; and

the plate bearing mechanism comprises a carrier, wherein the carrier can position the plate to be detected on the carrier by means of lateral abutting force of the plate to be detected, and form avoidance positions on two opposite surfaces of the plate to be detected;

wherein, be equipped with the survey station between first sensor with the second sensor, the carrier can move to survey station.

In one embodiment, the transfer mechanism includes:

the moving platform is arranged on the workbench through a Y-axis driving assembly and can translate along a Y axis relative to the workbench under the driving of the Y-axis driving assembly;

the mounting frame is arranged on the moving platform through a Y-axis driving assembly and can translate along an X axis relative to the moving platform under the driving of the X-axis driving assembly; and

and the first sensor and the second sensor are arranged on the mounting frame through the rotating component and can rotate around the Z axis under the driving of the rotating component.

In one embodiment, the device further comprises a rotation detection assembly, which comprises a fixedly arranged photoelectric sensor and a light barrier rotating along with the rotation assembly, and the light barrier can periodically shield the photoelectric sensor in the rotating process.

In one embodiment, the plate material loading mechanism further includes a bracket and a translation driving assembly, the bracket is mounted on the workbench through the translation driving assembly and can translate relative to the workbench under the driving of the translation driving assembly, and the carrier is fixed to the bracket.

In one embodiment, the carrier is an annular frame structure with a through hole in the middle, the plate to be tested positioned on the carrier is located within the range of the through hole, and a positioning assembly providing lateral supporting force for the plate to be tested is arranged on the periphery of the carrier.

In one embodiment, the positioning assembly includes a movable positioning element and a positioning block fixedly disposed on the carrier, and the movable positioning element and the positioning block enclose a clamping space for clamping the board to be measured and can adjust the size of the clamping space.

In one embodiment, the movable positioning part comprises a base which is fixedly arranged, an abutting head which is installed on the base and can stretch relative to the base, a compression spring which acts on the abutting head, and a locking part which is used for positioning the abutting head on the base, wherein the abutting head has a tendency of extending out of the base under the action of the compression spring.

In one embodiment, a supporting member is disposed on a periphery of the carrier, and the supporting member is movable to a supporting state for supporting the board to be tested and a position-avoiding state for avoiding the board to be tested.

In one embodiment, the calibration plate and the plate to be measured can be alternately positioned on the carrier, the calibration plate comprises a substrate and a plurality of spheres embedded in the substrate, each sphere protrudes from two opposite sides of the substrate, and the sphere center is located on a transverse central plane of the substrate, and the transverse central plane is a plane parallel to the surface of the substrate and passing through the center of the substrate.

According to the plate measuring device, the carrier can drive the plate to be measured to move to the measuring station. Moreover, the carrier realizes the positioning of the plate through the lateral holding force so as to form avoidance positions on two opposite sides of the plate, so the surfaces on the two sides of the plate can be respectively exposed to the first sensor and the second sensor. Under the drive of the transfer mechanism, the first sensor and the second sensor can realize global scanning on two sides of the plate, so that complete point cloud information of the surfaces on the two sides of the plate is obtained. After the point cloud information is obtained, the point cloud information can be uploaded to a computer system for processing, 3D model reconstruction of the plate is achieved, and all dimensions of the plate can be accurately measured.

Furthermore, the utility model provides a calibration plate for to any one of above-mentioned preferred embodiment the panel measuring device is markd, calibration plate includes the base plate and inlays and locate a plurality of spheroids of base plate, every the spheroid salient in relative both sides of base plate and centre of sphere are located on the horizontal central plane of base plate, horizontal central plane is for being on a parallel with the base plate surface passes the plane at base plate center.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a plate measuring device according to a preferred embodiment of the present invention;

FIG. 2 is a top view of the sheet material measuring device of FIG. 1;

FIG. 3 is an enlarged view of a portion A of the sheet material measuring device shown in FIG. 2;

FIG. 4 is a schematic structural diagram of a calibration plate of the plate measuring device shown in FIG. 1;

fig. 5 is a cross-sectional view of the calibration plate of fig. 4 taken along a-b.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The utility model provides a plate measuring device for carry out accurate measurement to the dimensional parameter of the surface texture of panel. Taking the polar plate of the fuel cell as an example, the surfaces of the two sides of the polar plate are formed with a flow channel and a sealant. The plate measuring device can realize measurement of parameters such as the groove width and the groove depth of the flow channel, the glue width and the glue height of the sealing glue and the like.

Referring to fig. 1 and 2, a plate measuring device 10 according to a preferred embodiment of the present invention includes a worktable 100, a transferring mechanism 200, a position sensor 300, and a plate loading mechanism 400.

The table 100 is a supporting structure and may be a metal frame structure. To ensure the accuracy of the measurement, the table 100 needs to have high stability. Accordingly, a marble table may be provided on the table 100. The transfer mechanism 200, the position sensor 300, and the plate material carrying mechanism 400 may be integrated on the marble platform.

The transfer mechanism 200 is disposed on the work table 100, and the position sensor 300 is mounted on the transfer mechanism 200 and can be driven by the transfer mechanism 200 to move. The position sensor 300 is used to acquire point cloud information, and the position sensor 300 may be a 3D camera. The 3D camera may acquire a point cloud by emitting structured light, infrared light, and receiving reflected light signals. The position sensor 300 includes a first sensor 310 and a second sensor 320, and the first sensor 310 and the second sensor 320 can be driven by the transferring mechanism 200 to move synchronously along a predetermined path.

For the polar plate of the fuel cell, the preset path is approximately consistent with the flow channel on the surface of the polar plate and the extending direction of the sealing glue.

The first sensor 310 is disposed generally opposite the second sensor 320. As shown in fig. 1, the first sensor 310 and the second sensor 320 are spaced apart in the vertical direction. Also, a measuring station is provided between the first sensor 310 and the second sensor 320. When the plate to be measured is placed at the measuring station, the first sensor 310 and the second sensor 320 can respectively obtain point cloud information of two opposite surfaces of the plate to be measured. Furthermore, as the first sensor 310 and the second sensor 320 are driven by the transfer mechanism 200 to move synchronously, the surface of the plate material to be measured can be scanned globally.

In the present embodiment, the transferring mechanism 200 includes a movable platform 210, a Y-axis driving module 220, a mounting frame 230, an X-axis driving module 240, and a rotating module 250.

The movable platform 210 may be a plate-shaped structure, and has high mechanical strength and stability. The movable platform 210 is mounted on the worktable 100 through a Y-axis driving assembly 220, and can translate along the Y-axis relative to the worktable 100 under the driving of the Y-axis driving assembly 220. The Y-axis drive assembly 220 generally includes high precision rails and a drive member, which may be a linear motor. The movable platform 210 is slidably disposed on the guide rail and is in transmission connection with the driving member.

The mounting bracket 230 may be a metal member for supporting the first sensor 310 and the second sensor 320. The mounting frame 230 may be mounted to the movable platform 210 by an X-axis driving assembly 240 and may be driven by the X-axis driving assembly 240 to translate along the X-axis relative to the movable platform 210. The structure of the X-axis driving assembly 240 may be the same as that of the Y-axis driving assembly 220, including a guide rail and a driving member.

The rotation assembly 250 is disposed on the mounting frame 230, and the first sensor 310 and the second sensor 320 are mounted on the mounting frame 230 through the rotation assembly 250 and can rotate around the Z-axis under the driving of the rotation assembly 250. The rotation assembly 250 may be a direct drive motor. The number of the first sensor 310 and the second sensor 320 is 1, so that two rotating assemblies 250 are provided, and the two rotating assemblies 250 can rotate synchronously.

The directions of the X axis, the Y axis and the Z axis are three directions which are vertical to each other in pairs. As shown in fig. 1, the X-axis direction refers to the horizontal direction, the Y-axis direction refers to the direction perpendicular to the plane of the drawing, and the Z-axis direction refers to the vertical direction. Therefore, the transfer mechanism 200 can drive the position sensor to move in three degrees of freedom, so that the first sensor 310 and the second sensor 320 can move along the predetermined path.

Further, in the present embodiment, the plate material measuring apparatus 10 further includes a rotation detecting assembly 500. The rotation detecting assembly 500 includes a fixed photosensor 510 and a light barrier 520 rotating with the rotating assembly 250, and the light barrier 520 can periodically block the photosensor 510 during the rotation process.

Specifically, the photoelectric sensor 510 may be fixed to the mounting frame 230, and the light blocking sheet 520 may be disposed at the driving end of the rotation detecting assembly 500. The light barrier 520 can form a shielding effect on the photo sensor 510 at least once when rotating for one circle. The photoelectric sensor 510 can record once every time it is shielded, so that the number of rotations of the first sensor 310 and the second sensor 320 can be monitored to determine the position of the rotated position sensor 300.

The plate material loading mechanism 400 includes a carrier 410 for loading and positioning a plate material to be tested. The carrier 410 may be moved to a measurement station. Therefore, under the driving of the carrier 410, the plate to be measured can enter the measuring station, and the point cloud information of the two opposite surfaces is obtained by the first sensor 310 and the second sensor 320.

Specifically, in the present embodiment, the plate material loading mechanism 400 further includes a bracket 420 and a translation driving assembly 430. The support 420 is mounted on the worktable 100 through a translation driving assembly 430, and can translate relative to the worktable 100 under the driving of the translation driving assembly 430, and the carrier 410 is fixed on the support 420.

The translation driving assembly 430 may have the same structure as the Y-axis driving assembly 220 and the X-axis driving assembly 240, and includes a guide rail and a driving member. The bracket 420 is slidably disposed on the guide rail and is in transmission connection with the driving member. The driving direction of the translation driving assembly 430 may be an X-axis direction or a Y-axis direction, so as to drive the carrier 410 to move inside and outside the measurement station, so as to perform a loading operation on a board to be measured.

It should be noted that in other embodiments, sheet material measuring device 10 may be used directly in a production line. Therefore, the carrier 410 can also be directly integrated on the transfer mechanism of the production line, and can be driven by the transfer mechanism to move inside and outside the measurement station.

The carrier 410 can position the board to be tested on the carrier 410 by means of the lateral supporting force of the board to be tested, and form a clearance for two opposite surfaces of the board to be tested. The lateral holding force may be provided by the carrier 410 itself or by a positioning structure disposed on the carrier 410. The carrier 410 is used for positioning the board to be tested by lateral pressing instead of vertical supporting. That is, when the board to be tested is positioned on the carrier 410, the carrier 410 does not shield the two opposite side surfaces of the board to be tested.

Therefore, when the carrier 410 drives the board to be measured to move to the measuring station, the surfaces on both sides of the board can be exposed to the first sensor 310 and the second sensor 320, respectively. Further, under the driving of the transferring mechanism 200, the first sensor 310 and the second sensor 320 can realize global scanning on both sides of the plate, so as to obtain complete point cloud information on both side surfaces of the plate. After the point cloud information is obtained, the point cloud information can be uploaded to a computer system for processing, 3D model reconstruction of the plate is achieved, and the dimensions of the channel width and the channel depth of the flow channel of the plate, the glue width and the glue height of the sealing glue and the like can be accurately measured.

It should be noted that the computer system for implementing 3D model reconstruction may be a Personal Computer (PC) equipped with 3D modeling software, and may be in communication connection with the position sensor 300 through a preset interface to obtain the point cloud information. In addition, a processor with a 3D modeling function may also be directly integrated into the sheet material measuring device 10 to implement the establishment and display of the 3D model.

Referring to fig. 3, in the present embodiment, the carrier 410 is an annular frame structure having a through hole 101 in the middle, the plate to be tested positioned in the carrier 410 is located within the through hole 101, and the positioning assembly 440 for providing a lateral supporting force to the plate to be tested is disposed on the periphery of the carrier 410.

The size of the through hole 101 is generally equal to or slightly larger than that of the board to be tested, so the carrier 410 can completely make the board to be tested overhead, thereby avoiding shielding the surface of the board to be tested. The carrier 410 is generally a rectangular frame structure, and substantially matches the outer profile of the board to be tested.

Further, in the present embodiment, the positioning assembly 440 includes a movable positioning element 441 and a positioning block 442. The positioning block 442 is fixedly disposed on the carrier 410, and the movable positioning element 441 and the positioning block 442 enclose a clamping space (not shown) for clamping the board to be tested and the size of the clamping space can be adjusted.

Specifically, the positioning block 442 may be a metal block and may be fixed to the carrier 410 by welding or screwing. The movable positioning member 441 is generally disposed opposite to the positioning block 442. As shown in fig. 2, the carrier 410 has a rectangular frame structure. Two adjacent edges are provided with positioning blocks 442, and the other two edges are respectively provided with movable positioning pieces 441. When the plate body to be tested is loaded, the size of the clamping space is increased through the movable positioning piece 441, so that the plate body to be tested can be conveniently placed; and when the position of the plate body to be measured is adjusted in place, the size of the clamping space can be reduced until the plate body to be measured is clamped tightly, so that the positioning is realized.

Moreover, since the position of the positioning block 442 is always kept unchanged relative to the carrier 410, the positioning accuracy of the board to be measured can be improved.

As shown in fig. 3, in the present embodiment, the movable positioning member 441 includes a base 4411, an abutting head 4412, a compression spring (not shown), and a locking member 4413.

The base 4411 is fixed to the edge of the carrier 410 by screw fastening. The abutment head 4412 is mounted to the base 4411 and is retractable relative to the base 4411 to abut the head 4412. Further, the abutment head 4412 can be extended and contracted to adjust the size of the holding space. A compression spring (not shown) acts on the abutment head 4412. Also, the abutment head 4412 has a tendency to extend out of the base 4411 under the action of the compression spring. The retaining member 4413 is used to position the abutment head 4412 on the base 4411. Specifically, the locking member 4413 may be a latch, which is inserted and withdrawn to lock and unlock the abutting joint 4412.

When a board to be tested is loaded, the abutting head 4412 is retracted to increase the size of the clamping space. Meanwhile, the locking piece 4413 is operated to lock the abutting head 4412, so that the abutting head 4412 is kept still, the abutting head 4412 does not need to be pressed all the time, and the operation is convenient. Then, the plate body to be measured is placed in the clamping space and adjusted in place. Subsequently, the locking member 4413 is pulled open to release the abutting head 4412, the abutting head 4412 extends under the action of the compression spring until abutting against the plate to be detected, and the plate to be detected is clamped between the positioning block 442 and the abutting head 4412 to realize clamping and positioning.

The abutting head 4412 automatically abuts against the workpiece to be detected under the action of the compression spring, so that the positioning effect is better. In addition, the compression spring has a buffering effect, so that the plate body to be detected cannot be damaged in the clamping and positioning process.

Further, in the present embodiment, the supporting member 450 is disposed at the periphery of the carrier 410, and the supporting member 450 can move to a supporting state for supporting the board to be tested and a avoiding state for avoiding the board to be tested.

When the board to be tested is loaded, the supporting member 450 may be switched to the supporting state. Therefore, the board to be tested can be placed on the supporting member 450 first. Therefore, the position of the plate body to be tested can be conveniently kept, and the plate body to be tested is prevented from being inclined. Subsequently, the movable positioning part 441 is adjusted to reduce the size of the clamping space, so as to clamp the plate body to be tested. Finally, the supporting member 450 is switched to an avoiding state to prevent the supporting member 450 from shielding the surface of the board to be detected and affecting the point cloud information acquisition of the position sensor 300.

The supporting member 450 may be a metal sheet rotatably disposed on the edge of the carrier 410, and is configured to be switched between a supporting state and an avoiding state by rotation. Specifically, the metal sheet can be partially rotated into the range of the through hole 101 by the rotation. At this time, the plate body to be tested can be directly supported on the metal sheet. When the metal sheet rotates to the outside of the range of the through hole 101, the avoidance position can be formed on the plate body to be detected.

In order to eliminate the influence of assembly errors and other dimensional tolerances on the measurement accuracy, calibration is generally required before the measurement of the dimension of the plate body to be measured.

In the present embodiment, the plate measuring device 10 further includes a calibration plate 600, and the calibration plate 600 and the plate to be measured can be alternately positioned on the carrier 410. Before the measurement is performed, the calibration plate 600 is positioned on the carrier 410 and moved to the measurement station. Then, the first sensor 310 and the second sensor 320 scan according to a predetermined path to obtain the point cloud information of the calibration plate 600. And finally, comparing and analyzing the acquired point cloud information with a preset standard value to obtain a compensation value. When the plate body to be measured is measured subsequently, the compensation value can be utilized to calibrate the measurement result.

In addition, access to the calibration plate 600 is facilitated. The plate carrying mechanism 400 is further provided with a calibration plate fixing position.

Referring to fig. 4, the calibration plate 600 includes a substrate 610 and a plurality of spheres 620. The plurality of spheres 620 are embedded in the substrate 610, each sphere 620 protrudes from two opposite sides of the substrate 610, and the center of the sphere is located on a horizontal center plane of the substrate 610, which is a plane parallel to the surface of the substrate 610 and passing through the center of the substrate 610.

The substrate 610 is a plate-shaped structure formed of a non-transparent material. The outer profile of the substrate 610 is substantially the same as that of the board to be tested, and may be rectangular. The ball 620 may be a steel ball, which has high strength and hardness and is not easily deformed. The plurality of spheres 620 may be uniformly distributed on the substrate 610.

When the position sensor 300 scans the calibration plate 600, the circular arc surface of the sphere 620 protruding out of the surface of the substrate 610 can provide X, Y, Z point cloud information in three directions, and then the 3D point cloud image and the calibration plate 600 are calibrated and spliced through a calibration algorithm. Furthermore, since the first sensor 310 and the second sensor 320 scan from two directions, the upper and lower surfaces can be calibrated at a time by using the calibration plate 600.

Furthermore, two of the arc surfaces on the two sides of the substrate 610 belong to the same sphere 620, and the centers of the two arc surfaces are at the same point. Therefore, when the calibration is performed using the calibration plate 600, the relative distance between the first sensor 310 and the second sensor 320 can be accurately calibrated, and thus calibration can also be performed in the thickness direction.

Since the scanning line width of the 3D camera is only 11 mm, at least two arc surfaces of the sphere 610 must be swept in each scanning. Therefore, it is desirable to shorten the distance between spheres 620 as much as possible. In this embodiment, the substrate 610 has a thickness of about 2 mm, and the sphere 620 has a diameter of 4 mm. Therefore, the height of each sphere 620 protruding from the two side surfaces of the substrate 610 is 1 mm; the ball spacing between the balls 610 is 6 mm.

In the plate measuring device 10, the carrier 410 can drive the plate to be measured to move to the measuring station. Moreover, since the carrier 410 is used to position the plate by the lateral holding force to form a clearance on two opposite sides of the plate, the surfaces on the two sides of the plate can be exposed to the first sensor 310 and the second sensor 320, respectively. Under the driving of the transferring mechanism 200, the first sensor 310 and the second sensor 320 can realize global scanning on both sides of the plate, so as to obtain complete point cloud information on the surfaces of both sides of the plate. After the point cloud information is obtained, the point cloud information can be uploaded to a computer system for processing, 3D model reconstruction of the plate is achieved, and all dimensions of the plate can be accurately measured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A sheet material measuring device, comprising:

a work table;

the transfer mechanism is arranged on the workbench;

2. The plate material measuring device according to claim 1, wherein the transfer mechanism includes:

the mounting frame is arranged on the moving platform through an X-axis driving assembly and can translate along an X axis relative to the moving platform under the driving of the X-axis driving assembly; and

3. The plate measuring device according to claim 2, further comprising a rotation detecting assembly including a fixedly disposed photo sensor and a light barrier rotating with the rotation assembly, wherein the light barrier can periodically block the photo sensor during rotation.

4. The apparatus of claim 1, wherein the plate material loading mechanism further comprises a support and a translation driving assembly, the support is mounted to the table by the translation driving assembly and can be driven by the translation driving assembly to translate relative to the table, and the carrier is fixed to the support.

5. The apparatus as claimed in claim 1, wherein the carrier is an annular frame structure having a through hole in the middle, the plate to be measured positioned on the carrier is located within the through hole, and a positioning assembly is disposed on the periphery of the carrier for providing lateral supporting force to the plate to be measured.

6. The apparatus as claimed in claim 5, wherein the positioning assembly includes a movable positioning element and a positioning block fixed to the carrier, and the movable positioning element and the positioning block enclose a clamping space for clamping the plate to be measured and can adjust the size of the clamping space.

7. A sheet measuring device as claimed in claim 6, wherein the movable positioning element comprises a fixedly arranged base, an abutment head mounted on the base and extendable relative to the base, a compression spring acting on the abutment head, and a locking element for positioning the abutment head on the base, the abutment head having a tendency to extend out of the base under the action of the compression spring.

8. The apparatus as claimed in claim 6, wherein the carrier has a supporting member at its periphery, and the supporting member is movable to a supporting state for supporting the sheet to be measured and a position-avoiding state for avoiding the sheet to be measured.

9. The apparatus as claimed in claim 1, further comprising a calibration plate, wherein the calibration plate and the plate to be measured can be alternately positioned on the carrier, the calibration plate comprises a substrate and a plurality of balls embedded in the substrate, each of the balls protrudes from two opposite sides of the substrate, and the center of the ball is located on a transverse center plane of the substrate, the transverse center plane is a plane parallel to the surface of the substrate and passing through the center of the substrate.

10. A calibration plate for calibrating a plate measuring device according to any one of claims 1 to 9, wherein the calibration plate comprises a base plate and a plurality of spheres embedded in the base plate, each sphere protrudes from opposite sides of the base plate and has a sphere center located on a transverse central plane of the base plate, and the transverse central plane is a plane parallel to the surface of the base plate and passing through the center of the base plate.