Measuring device, conveying system and plate detection method

Abstract

The invention provides a measuring device, a conveying system and a plate detection method. The measuring device comprises an installation body, a first movable part, a second movable part, a measuring part and a differential motion mechanism. The differential motion mechanism comprises a driving piece, a rotating body, a first connecting rod and a second connecting rod. The driving piece controls the first connecting rod and the second connecting rod to be in staggered transmission through the first differential motion part and the second differential motion part on the rotating body, so that the second movable piece moves in the second direction relative to the first movable piece and the first movable piece moves in the first direction relative to the mounting body in a staggered mode; therefore, the measuring parts on the second movable part can respectively and independently perform scanning measurement and measurement position adjustment, the complex structure and complex motion control are simplified, the number of the driving parts and the measuring parts is reduced, the cost is reduced, and the measurement accuracy is improved. And the installation transmission superposition error caused by multiple driving pieces and the coordinate system calibration difficulty and precision loss caused by multiple measuring pieces are reduced, and the measuring precision is improved.

Description

Technical Field

[0001] This invention relates to the field of online measuring equipment, and in particular to a measuring device, a conveying system, and a method for inspecting sheet metal. Background Technology

[0002] Currently, there are two methods for online inspection of sheet metal: one is to complete the measurement by covering the sheet metal from top to bottom, and the other is to complete the measurement by using multiple linear modules to achieve multi-directional movement. However, both of these inspection methods are costly and have low detection accuracy, making it difficult to meet the demand for low-cost, high-precision inspection of sheet metal. Summary of the Invention

[0003] Therefore, it is necessary to provide a measuring device, a conveying system, and a method for inspecting sheet materials, addressing the problems that existing inspection methods are costly, have low detection accuracy, and cannot meet the needs for low-cost, high-precision inspection of sheet materials.

[0004] The technical solution is as follows:

[0005] In a first aspect, a measuring device is provided, comprising:

[0006] Install the main unit;

[0007] The first movable component is movably connected to the mounting body along a first direction and is provided with a first transmission part extending along a second direction;

[0008] The second movable member is movably connected to the first movable member along the second direction, and is provided with a second transmission part extending along the first direction;

[0009] The measuring element is mounted on the second movable element;

[0010] A differential motion mechanism includes a driving component, a rotating body, a first connecting rod, and a second connecting rod. The driving component is connected to the rotating body in a transmission manner. The rotating body is provided with a first differential motion part and a second differential motion part. The first connecting rod and the second connecting rod are rotatably mounted on the mounting body. The first connecting rod is movably connected to both the first differential motion part and the second transmission part. The second connecting rod is movably connected to both the second differential motion part and the first transmission part.

[0011] Specifically, when the first differential motion unit drives the second movable member to move along the second direction via the first connecting rod, the first movable member remains stationary relative to the mounting body; when the second differential motion unit drives the first movable member to move along the first direction via the second connecting rod, the second movable member remains stationary relative to the first movable member; the first direction and the second direction are perpendicular to each other.

[0012] The technical solution will be further explained below:

[0013] In one embodiment, the first differential motion unit includes a first arc segment, a first straight segment, a second arc segment, and a second straight segment connected end to end in sequence. The first arc segment and the second arc segment are located on opposite sides of the rotating body and both extend around the axis of the rotating body. The second differential motion unit includes a third arc segment, a third straight segment, a fourth arc segment, and a fourth straight segment connected end to end in sequence. The third arc segment and the fourth arc segment are located on opposite sides of the rotating body and both extend around the axis of the rotating body.

[0014] When the first connecting rod is movably connected to the first arc segment or the second arc segment, the second connecting rod is movably connected to the third straight segment or the fourth straight segment; when the first connecting rod is movably connected to the first straight segment or the second straight segment, the second connecting rod is movably connected to the third arc segment or the fourth arc segment.

[0015] In one embodiment, the rotating body includes a first rotating disk and a second rotating disk spaced apart. The first rotating disk has a first connecting portion extending along its own axial direction, and the second rotating disk has a second connecting portion extending along its own axial direction. The first connecting portion and the second connecting portion are fixedly connected. The driving member is transmittedly connected to at least one of the first rotating disk and the second rotating disk. The first differential motion portion and the second differential motion portion are respectively located on the side of the first rotating disk and the second rotating disk that are close to each other.

[0016] In one embodiment, the first movable member and the second movable member are both located between the first rotating disk and the second rotating disk. One end of the first connecting rod is rotatably connected to the mounting body. The other end of the first connecting rod is provided with a third connecting part and a fourth connecting part on opposite sides. The third connecting part is movably connected to the first differential motion part, and the fourth connecting part is movably connected to the second transmission part.

[0017] In one embodiment, the second connecting rod is located between the first movable member and the second rotating disk, and includes a first mounting portion rotatably mounted on the mounting body, and a fifth connecting portion and a sixth connecting portion extending radially along the first mounting portion and arranged at an angle. The fifth connecting portion is movably connected to the second differential motion portion, and the sixth connecting portion is movably connected to the first transmission portion.

[0018] In one embodiment, the measuring device further includes a mounting shaft, a flipping gear, and a flipping rack. The mounting shaft is arranged along the first direction and rotatably mounted on the second movable member. The flipping gear and the measuring member are both fixedly mounted on the mounting shaft. The flipping rack is arranged along the second direction and mounted on the mounting body. The flipping gear has an adjustment position in the first direction. When the flipping gear moves to the adjustment position, the flipping gear meshes with the flipping rack.

[0019] In one embodiment, the measuring device further includes a locking assembly mounted on the second movable member, which is used to lock the flip gear and the second movable member in engagement when the flip gear moves away from the adjustment position along the first direction, and to release the locking engagement between the flip gear and the second movable member when the flip gear moves to the adjustment position along the first direction.

[0020] In one embodiment, a second mounting portion and a third mounting portion are provided on one side of the second movable member, spaced apart along the first direction. One end of the mounting shaft is sequentially inserted through the second mounting portion and the third mounting portion, and is rotatably connected to the second mounting portion and the third mounting portion. The flipping gear is located between the second mounting portion and the third mounting portion and is fixedly sleeved on the mounting shaft. The measuring member is mounted on the other end of the mounting shaft. The flipping gear is provided with a locking hole. The second mounting portion is provided with a mounting cavity. The side of the second mounting portion near the flipping gear is provided with a mounting hole corresponding to the locking hole and communicating with the mounting cavity. The second mounting portion has an opening extending along the first direction and communicating with the mounting cavity on the side away from the second movable member. The locking assembly includes an elastic member and a movable pin with a third transmission part. The movable pin is movably inserted through the mounting hole. The elastic member is installed in the mounting cavity and is kinetically connected to the movable pin to apply an elastic driving force to the movable pin to insert it into the locking hole. The third transmission part extends out of the mounting cavity from the opening and is configured to engage with the flip rack when the flip gear moves along the first direction to the adjustment position, so that the movable pin moves out of the locking hole and compresses the elastic member.

[0021] Secondly, a conveying system is provided, including a conveying device and the measuring device, wherein the conveying device is provided with a measuring station and is used to convey a sheet material, and the measuring device is installed at the measuring station and is used to scan and measure the surface of the sheet material.

[0022] Thirdly, a method for detecting sheet metal is provided, applied to the aforementioned conveying system, the method comprising:

[0023] The conveyor system transports the sheet metal to the measurement station;

[0024] The driving component drives the first movable component to move along the first direction through a differential motion mechanism, so that the measuring component scans and measures one side surface of the plate. During this process, the second movable component does not move relative to the first movable component.

[0025] The driving component drives the second movable component to move along the second direction through the differential motion mechanism, so that the measuring component moves to the other side of the plate. During this process, the first movable component does not move relative to the mounting body.

[0026] The driving member drives the first movable member to move along the first direction through the differential motion mechanism, so that the measuring member scans and measures the other side surface of the plate. During this process, the second movable member does not move relative to the first movable member.

[0027] Compared with existing online inspection methods for sheet metal, the measuring device, conveying system, and sheet metal inspection method in this application have at least the following advantages: The driving component can control the first link and the second link to be staggered through the first differential motion part and the second differential motion part on the rotating body. This allows the first link to drive the second movable part to move relative to the first movable part along the second direction, and the second link to drive the first movable part to move relative to the mounting body along the first direction, thus allowing the measuring component on the second movable part to independently move along the first direction for scanning measurement and move along the second direction to adjust the measurement position. This decomposes the rotational motion of the rotating body into independent measuring component movements along the first and second directions, simplifying the complex structure and motion control, reducing the number of driving components and measuring components, reducing costs, and also reducing the superposition error of installation transmission caused by multiple driving components and the difficulty and accuracy loss of coordinate system calibration caused by multiple measuring components, thereby improving the measurement accuracy of the measuring device and conveying system. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1This is a schematic diagram of the structure of a conveying system according to one embodiment.

[0031] Figure 2 for Figure 1 A schematic diagram of the conveying system in another measurement state.

[0032] Figure 3 This is a schematic diagram of the structure of a measuring device according to one embodiment.

[0033] Figure 4 for Figure 3 A schematic diagram of the measuring device from another perspective.

[0034] Figure 5 for Figure 3 Exploded view of the measuring device.

[0035] Figure 6 for Figure 3 A schematic diagram of the measuring device from another perspective.

[0036] Figure 7 for Figure 6 A magnified view of part A in the middle.

[0037] Figure 8 This is a flowchart of a method for testing sheet metal, as exemplified by one of the embodiments.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Conveying system; 10. Measuring device; 110. Mounting body; 210. First moving part; 310. Second moving part; 311. Second transmission part; 312. Second mounting part; 313. Third mounting part; 314. Mounting cavity; 410. Measuring element; 500. Differential motion mechanism; 510. Driving element; 520. Rotating body; 521. First differential motion part; 522. Second differential motion part; 5221. Third arc segment; 5222. Third straight segment; 5223. Fourth arc segment; 5224. Fourth straight segment; 523 524. First rotating disk; 525. Second rotating disk; 526. First connecting part; 527. Second connecting part; 530. First connecting rod; 531. Third connecting part; 532. Fourth connecting part; 540. Second connecting rod; 541. First mounting part; 542. Fifth connecting part; 543. Sixth connecting part; 610. Mounting shaft seat; 620. Reversing gear; 621. Locking hole; 630. Reversing rack; 640. Locking assembly; 641. Elastic element; 642. Third transmission part; 643. Movable pin; 20. Conveying device; 30. Plate. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, a conveying system 1 is provided, including a conveying device 20 and a measuring device 10. The conveying device 20 is provided with a measuring station and is used to convey a sheet material 30. The measuring device 10 is installed at the measuring station and is used to scan and measure the surface of the sheet material 30. Thus, the measuring device 10 can scan and measure the surface of the sheet material 30 during the conveying process of the conveying device 20, improving the practicality of the conveying system 1.

[0042] It should be noted that the conveying device 20 can be configured with any conveying structure in the prior art. The number of measuring devices 10 can be flexibly adjusted according to actual needs. For example, the number of measuring devices 10 can be one, two, or more. The objects scanned and measured by the measuring devices 10 include, but are not limited to, the dimensions and appearance of the sheet material 30.

[0043] like Figure 3 , Figure 4 and Figure 5As shown, in one embodiment, a measuring device 10 is provided, including a mounting body 110, a first movable member 210, a second movable member 310, a measuring member 410, and a differential motion mechanism 500. The first movable member 210 is movably connected to the mounting body 110 along a first direction and has a first transmission portion extending along a second direction. The second movable member 310 is movably connected to the first movable member 210 along the second direction and has a second transmission portion 311 extending along the first direction. The measuring member 410 is mounted on the second movable member 310. The differential motion mechanism 500 includes a driving member 510, a rotating body 520, a first connecting rod 530, and a second connecting rod 540. The driving member 510 is drively connected to the rotating body 520. The rotating body 520 has a first differential motion portion 521 and a second differential motion portion 522. The first connecting rod 530 and the second connecting rod 540 are rotatably mounted on the mounting body 110. The first link 530 is movably connected to both the first differential motion unit 521 and the second transmission unit 311. The second link 540 is movably connected to both the second differential motion unit 522 and the first transmission unit. When the first differential motion unit 521 drives the second movable member 210 to move along the second direction via the first link 530, the first movable member 210 remains stationary relative to the mounting body 110. When the second differential motion unit 522 drives the first movable member 210 to move along the first direction via the second link 540, the second movable member 310 remains stationary relative to the first movable member 210. The first direction and the second direction are perpendicular to each other.

[0044] In the above embodiment, the measuring device 10 is used in the following ways: First, the conveying device 20 conveys the plate 30 to the measuring station. Second, the driving member 510 drives the rotating body 520 to rotate, so that the rotating body 520 applies a first driving force to the second connecting rod 540 through the second differential motion part 522. At this time, the first driving force can be decomposed into a first component force along the first direction and a second component force along the second direction. Under the action of the second component force, the second connecting rod 540 moves on the first transmission part to ensure that the second connecting rod 540 can drive the first movable member 210 to move relative to the mounting body 110 under the action of the first component force. Thus, the first movable member 210 drives the measuring member 410 to move along the first direction through the second movable member 310 to scan and measure one side surface of the plate 30. During this process, there is no second driving force between the first differential motion part 521 and the first connecting rod 530, or the second driving force is too small to drive the second movable member 310 to move relative to the first movable member 210. Then, the drive member 510 continues to drive the rotating body 520 to rotate, so that the rotating body 520 applies a second driving force to the first connecting rod 530 through the first differential motion part 521. At this time, the second driving force can be decomposed into a third component force along the first direction and a fourth component force along the second direction. Under the action of the third component force, the first connecting rod 530 moves on the second transmission part 311 to ensure that the second connecting rod 540 can drive the second movable member 310 to move relative to the first movable member 210 under the action of the fourth component force, so that the measuring member 410 moves to the other side of the plate 30. During this process, there is no first driving force between the second differential motion part 522 and the second connecting rod 540, or the first driving force is too small to drive the first movable member 210 to move relative to the mounting body 110. Finally, the above steps are repeated so that the rotating body 520 drives the first movable part 210 to move in the first direction through the second connecting rod 540. The first movable part 210 drives the measuring part 410 to move synchronously through the second movable part 310, so as to scan and measure the other side surface of the plate 30, and complete the measurement of the upper and lower surfaces of the plate 30.In this application, the drive unit 510 controls the first link 530 and the second link 540 to be staggered through the first differential motion part 521 and the second differential motion part 522 on the rotating body 520. This allows the first link 530 to drive the second movable part 310 to move relative to the first movable part 210 in a second direction, and the second link 540 to drive the first movable part 210 to move relative to the mounting body 110 in a first direction, thus staggering the movement. This allows the measuring element 410 on the second movable part 310 to independently move in the first direction for scanning measurement and in the second direction for adjusting the measurement position. This decomposes the rotational motion of the rotating body 520 into independent movements of the measuring element 410 in the first and second directions, simplifying the complex structure and motion control. It reduces the number of drive units 510 and measuring elements 410, lowers costs, and also reduces the superposition error of installation transmission caused by multiple drive units 510 and the difficulty and accuracy loss of coordinate system calibration caused by multiple measuring elements 410, thereby improving the measurement accuracy of the measuring device 10.

[0045] It should be noted that this application uses the measurement device 10 applied to the measurement of sheet material 30 as an example for illustration. In other embodiments, the measurement device 10 can also be applied to measure other products.

[0046] The first movable component 210 can be configured as a movable block, movable seat, movable frame, or other movable structure. The second movable component 310 can be configured as a movable rod, movable bar, or other movable structure. Both the first transmission part and the second transmission part 311 can be configured as a transmission groove, transmission rail, or other transmission structure. The measuring component 410 can be configured as any measuring structure in the prior art. The driving component 510 can be configured as a rotary cylinder, rotary motor, or other rotary drive structure. Both the first differential motion part 521 and the second differential motion part 522 can be configured as a differential motion groove, differential motion rail, or other differential motion structure.

[0047] Specifically, in this embodiment, the first direction is set to the width direction of the conveying device 20. The second direction is set to the vertical direction. When the second movable member 310 moves vertically relative to the first movable member 210, the projections of the measuring device 10 and the conveying device 20 are misaligned in the vertical direction to ensure that there is no interference between them.

[0048] Specifically, in this embodiment, the shape and size of the first differential motion part 521 are the same as or similar to the shape and size of the second differential motion part 522, and both are arranged in a ring shape. The driving member 510 can drive the rotating body 520 to reciprocate (oscillate) or drive the rotating body 520 to rotate continuously in one direction.

[0049] like Figure 4 and Figure 5As shown, optionally, the first differential motion unit 521 includes a first arc-shaped segment, a first straight segment, a second arc-shaped segment, and a second straight segment connected end to end in sequence. The first arc-shaped segment and the second arc-shaped segment are located on opposite sides of the rotating body 520 and both extend around the axis of the rotating body 520. The second differential motion unit 522 includes a third arc-shaped segment 5221, a third straight segment 5222, a fourth arc-shaped segment 5223, and a fourth straight segment 5224 connected end to end in sequence. The third arc-shaped segment 5221 and the fourth arc-shaped segment 5223 are located on opposite sides of the rotating body 520 and both extend around the axis of the rotating body 520. When the first connecting rod 530 is movably connected to the first arc-shaped segment or the second arc-shaped segment, the second connecting rod 540 is correspondingly movably connected to the third straight segment 5222 or the fourth straight segment 5224. When the first link 530 is movably connected to the first or second straight segment, the second link 540 is correspondingly movably connected to the third or fourth arc segment 5221 or fourth arc segment 5223. Thus, when the first link 530 is movably connected to the first or second arc segment, there is no second driving force or the second driving force between the first link 530 and the rotating body 520 is very small and cannot drive the second movable member 310. Similarly, when the second link 540 is movably connected to the third or fourth arc segment 5221 or fourth arc segment 5223, there is no first driving force or the first driving force between the second link 540 and the rotating body 520 is very small and cannot drive the first movable member 210. This ensures that the first movable member 210 and the second movable member 310 move in a staggered manner, thereby ensuring that no interference occurs inside the differential motion mechanism 500 and improving the reliability of the measuring device 10.

[0050] like Figure 4 and Figure 5 As shown, in one embodiment, the rotating body 520 includes a first rotating disk 523 and a second rotating disk 524 spaced apart. The first rotating disk 523 has a first connecting portion 525 extending along its own axial direction. The second rotating disk 524 has a second connecting portion 526 extending along its own axial direction. The first connecting portion 525 and the second connecting portion 526 are fixedly connected. The driving member 510 is drivenly connected to at least one of the first rotating disk 523 and the second rotating disk 524. The first differential motion portion 521 and the second differential motion portion 522 are respectively located on the sides of the first rotating disk 523 and the second rotating disk 524 that are close to each other. In this way, the first connecting rod 530 and the second connecting rod 540 are correspondingly hidden between the first rotating disk 523 and the second rotating disk 524 to reduce the probability of interference between external objects and the first connecting rod 530 and the second connecting rod 540, thereby improving the reliability of the measuring device 10.

[0051] Specifically, in this embodiment, both the first connecting portion 525 and the second connecting portion 526 are provided with butterfly-shaped grooves, and the two are fixedly connected as one unit through the butterfly-shaped grooves. In other embodiments, the rotating body 520 can also be a one-piece structure. The first differential motion portion 521 and the second differential motion portion 522 can also be correspondingly arranged on the opposite sides of the rotating body 520.

[0052] like Figure 5 As shown, optionally, both the first movable member 210 and the second movable member 310 are located between the first rotating disk 523 and the second rotating disk 524. One end of the first connecting rod 530 is rotatably connected to the mounting body 110, and the other end of the first connecting rod 530 has a third connecting part 531 and a fourth connecting part 532 on opposite sides. The third connecting part 531 is movably connected to the first differential motion part 521. The fourth connecting part 532 is movably connected to the second transmission part 311. Thus, driven by the first differential motion part 521, the first connecting rod 530 drives the second movable member 310 to move along the second direction on the first movable member 210, thereby adjusting the measuring position of the measuring member 410 and improving the practicality of the measuring device 10.

[0053] like Figure 5 As shown, optionally, the second connecting rod 540 is located between the first movable member 210 and the second rotating disk 524, and includes a first mounting portion 541 rotatably mounted on the mounting body 110, and a fifth connecting portion 542 and a sixth connecting portion 543 extending radially along the first mounting portion 541 and arranged at an included angle. The fifth connecting portion 542 is movably connected to the second differential motion portion 522. The sixth connecting portion 543 is movably connected to the first transmission portion. Thus, driven by the second differential motion portion 522, the first connecting rod 530 drives the first movable member 210 to move along the first direction on the mounting body 110, and the first movable member 210 simultaneously drives the measuring member 410 to move along the first direction through the second movable member 310, realizing the scanning measurement of the measuring member 410 and improving the practicality of the measuring device 10.

[0054] The included angle between the fifth connecting part 542 and the sixth connecting part 543 can be flexibly adjusted according to the actual use.

[0055] like Figure 5 , Figure 6 and Figure 7As shown, in one embodiment, the measuring device 10 further includes a mounting base 610, a tilting gear 620, and a tilting rack 630. The mounting base 610 is disposed along a first direction and rotatably mounted on the second movable member 310. The tilting gear 620 and the measuring member 410 are both fixedly mounted on the mounting base 610. The tilting rack 630 is disposed along a second direction and mounted on the mounting body 110. The tilting gear 620 has an adjustment position in the first direction, and when the tilting gear 620 moves to the adjustment position, the tilting gear 620 meshes with the tilting rack 630. Thus, when the flip gear 620 moves to the adjustment position, and the rotating body 520 drives the second movable member 310 to move relative to the first movable member 210 in the second direction through the first differential motion part 521 and the first connecting rod 530, the flip gear 620 rotates around its own axis under the drive of the second movable member 310 and the guidance of the flip rack 630. In turn, it drives the measuring member 410 to flip through the mounting seat 610. Thus, the relative two-sided surfaces of the plate 30 can be scanned and measured by one driving member 510 and one measuring member 410. The measurement data of the relative two sides of the plate 30 are corresponding and located in the same coordinate system, resulting in higher accuracy of the measurement data and improved measurement accuracy of the measuring device 10.

[0056] It should be noted that the adjustment position refers to the position of the flipping gear 620 in the first direction when the rotating body 520 drives the second movable member 310 to move relative to the first movable member 210 in the second direction via the first differential motion part 521 and the first connecting rod 530. In other words, the movement of the measuring member 410 in the second direction and the flipping of the measuring member 410 are performed synchronously.

[0057] Specifically, in this embodiment, the mounting base 610 includes a rotating shaft and a mounting seat connected to one end of the rotating shaft. The measuring element 410 is mounted on the mounting seat and is coaxially arranged with the rotating shaft base.

[0058] In other embodiments, the measuring element 410 may not need to be flipped, and scanning measurements of the opposite two surfaces of the plate 30 can be achieved in two ways. The first way is to configure the measuring element 410 as a device capable of 360° measurement. The second way is to use two measuring elements 410, both mounted on the mounting shaft 610, and used for upward and downward scanning measurements respectively.

[0059] like Figure 5 and Figure 7As shown, the measuring device 10 further includes a locking assembly 640. The locking assembly 640 is mounted on the second movable member 310 and is used to lock the tilting gear 620 and the second movable member 310 together when the tilting gear 620 moves away from the adjustment position along the first direction, and to release the locking engagement between the tilting gear 620 and the second movable member 310 when the tilting gear 620 moves back to the adjustment position along the first direction. Thus, the tilting gear 620 can be self-locked by the locking assembly 640 to ensure that the measuring member 410 does not rotate relative to the second movable member 310 during scanning measurement along the first direction, thereby improving the reliability of the measuring device 10.

[0060] The locking component 640 can be configured as any of the prior art structures that selectively lock the reversing gear 620 onto the second movable member 310.

[0061] like Figure 5 and Figure 7 As shown, optionally, a second mounting portion 312 and a third mounting portion 313 are provided on one side of the second movable member 310, spaced apart along a first direction. One end of the mounting shaft 610 passes through the second mounting portion 312 and the third mounting portion 313 in sequence, and is rotatably connected to the second mounting portion 312 and the third mounting portion 313. A reversing gear 620 is located between the second mounting portion 312 and the third mounting portion 313, and is fixedly sleeved on the mounting shaft 610. A measuring member 410 is mounted on the other end of the mounting shaft 610. The reversing gear 620 is provided with a locking hole 621. The second mounting portion 312 is provided with a mounting cavity 314. The side of the second mounting portion 312 near the reversing gear 620 is provided with a mounting hole corresponding to the locking hole 621 and communicating with the mounting cavity 314. The side of the second mounting portion 312 away from the second movable member 310 is provided with an opening extending along the first direction and communicating with the mounting cavity 314. The locking assembly 640 includes an elastic member 641 and a movable pin 643 with a third transmission part 642. The movable pin 643 is movably inserted into the mounting hole. The elastic member 641 is installed in the mounting cavity 314 and is drively connected to the movable pin 643 to apply an elastic driving force to the movable pin 643, causing the movable pin 643 to insert into the locking hole 621. The third transmission part 642 extends out of the mounting cavity 314 from the opening and is configured to engage with the tilting rack 630 when the tilting gear 620 moves to the adjustment position in the first direction, so that the movable pin 643 moves out of the locking hole 621 and compresses the elastic member 641. In this way, the tilting gear 620 can automatically lock and fix when the second movable member 310 moves in the first direction, and can automatically release the locking and fixation when the second movable member 310 moves in the second direction, improving the practicality of the measuring device 10.

[0062] The elastic element 641 can be configured as a spring, elastic pad, elastic block, or other elastic structure. The number of locking holes 621 can be flexibly adjusted according to the actual number used; for example, the number of locking holes 621 can be two or four. Specifically, in this embodiment, the elastic element 641 can be configured as a spring, which is sleeved on one end of the positioning pin located in the mounting cavity 314 and abuts against the third transmission part 642. The number of locking holes 621 is at least one, and each locking hole 621 is spaced apart around the axis of the reversing gear 620.

[0063] like Figure 8 As shown, in one embodiment, a method for detecting sheet metal 30 is also provided, applied to the conveying system 1 in any of the above embodiments. The method for detecting sheet metal 30 includes the following steps:

[0064] S100, the conveying device 20 conveys the sheet 30 to the measuring station.

[0065] S200, the driving member 510 drives the first movable member 210 to move along the first direction through the differential motion mechanism 500, so that the measuring member 410 scans and measures one side surface of the plate 30. During this process, the second movable member 310 does not move relative to the first movable member 210.

[0066] S300, the driving member 510 drives the second movable member 310 to move along the second direction through the differential motion mechanism 500, so that the measuring member 410 moves to the other side of the plate 30. During this process, the first movable member 210 does not move relative to the mounting body 110.

[0067] S400, the driving member 510 drives the first movable member 210 to move along the first direction through the differential motion mechanism 500, so that the measuring member 410 scans and measures the other side surface of the plate 30. During this process, the second movable member 310 does not move relative to the first movable member 210.

[0068] Compared with the existing online inspection method for sheet metal 30, the sheet metal 30 measurement method in this application has at least the following advantages: the driving member 510 can control the first link 530 and the second link 540 to be misaligned through the first differential motion part 521 and the second differential motion part 522 on the rotating body 520, so that the first link 530 drives the second movable member 310 to move relative to the first movable member 210 in a second direction and the second link 540 drives the first movable member 210 to move relative to the mounting body 110 in a first direction to be misaligned, thereby causing the second movable member 310 to... The measuring element 410 can independently move along the first direction for scanning measurement and along the second direction for adjusting the measurement position. This decomposes the rotational motion of the rotating body 520 into independent measuring elements 410 moving along the first and second directions. This simplifies the complex structure and motion control, reduces the number of driving elements 510 and measuring elements 410, lowers costs, and also reduces the installation and transmission superposition errors caused by multiple driving elements 510 and the coordinate system calibration difficulties and accuracy loss caused by multiple measuring elements 410, thereby improving the measurement accuracy of the plate 30.

[0069] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0070] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0072] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0074] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0076] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A measuring device, characterized in that, include: Install the main unit; The first movable component is movably connected to the mounting body along a first direction and is provided with a first transmission part extending along a second direction; The second movable member is movably connected to the first movable member along the second direction, and is provided with a second transmission part extending along the first direction; The measuring element is mounted on the second movable element; A differential motion mechanism includes a driving component, a rotating body, a first connecting rod, and a second connecting rod. The driving component is connected to the rotating body in a transmission manner. The rotating body is provided with a first differential motion part and a second differential motion part. The first connecting rod and the second connecting rod are rotatably mounted on the mounting body. The first connecting rod is movably connected to both the first differential motion part and the second transmission part. The second connecting rod is movably connected to both the second differential motion part and the first transmission part. Specifically, when the first differential motion unit drives the second movable member to move along the second direction via the first connecting rod, the first movable member remains stationary relative to the mounting body; when the second differential motion unit drives the first movable member to move along the first direction via the second connecting rod, the second movable member remains stationary relative to the first movable member; the first direction and the second direction are perpendicular to each other.

2. The measuring device according to claim 1, characterized in that, The first differential motion unit includes a first arc segment, a first straight segment, a second arc segment, and a second straight segment connected end to end in sequence. The first arc segment and the second arc segment are located on opposite sides of the rotating body and both extend around the axis of the rotating body. The second differential motion unit includes a third arc segment, a third straight segment, a fourth arc segment, and a fourth straight segment connected end to end in sequence. The third arc segment and the fourth arc segment are located on opposite sides of the rotating body and both extend around the axis of the rotating body. When the first connecting rod is movably connected to the first arc segment or the second arc segment, the second connecting rod is movably connected to the third straight segment or the fourth straight segment; when the first connecting rod is movably connected to the first straight segment or the second straight segment, the second connecting rod is movably connected to the third arc segment or the fourth arc segment.

3. The measuring device according to claim 1, characterized in that, The rotating body includes a first rotating disk and a second rotating disk spaced apart. The first rotating disk has a first connecting portion extending along its own axial direction, and the second rotating disk has a second connecting portion extending along its own axial direction. The first connecting portion and the second connecting portion are fixedly connected. The driving member is connected to at least one of the first rotating disk and the second rotating disk in a transmission connection. The first differential motion part and the second differential motion part are respectively located on the side of the first rotating disk and the second rotating disk that are close to each other.

4. The measuring device according to claim 3, characterized in that, Both the first movable component and the second movable component are located between the first rotating disk and the second rotating disk. One end of the first connecting rod is rotatably connected to the mounting body. The other end of the first connecting rod is provided with a third connecting part and a fourth connecting part on opposite sides. The third connecting part is movably connected to the first differential motion part, and the fourth connecting part is movably connected to the second transmission part.

5. The measuring device according to claim 3, characterized in that, The second connecting rod is located between the first movable member and the second rotating disk, and includes a first mounting part rotatably mounted on the mounting body, and a fifth connecting part and a sixth connecting part that both extend radially along the first mounting part and are arranged at an angle. The fifth connecting part is movably connected to the second differential motion part, and the sixth connecting part is movably connected to the first transmission part.

6. The measuring device according to any one of claims 1 to 5, characterized in that, The measuring device further includes a mounting shaft, a flipping gear, and a flipping rack. The mounting shaft is arranged along the first direction and rotatably mounted on the second movable component. The flipping gear and the measuring component are both fixedly mounted on the mounting shaft. The flipping rack is arranged along the second direction and mounted on the mounting body. The flipping gear has an adjustment position in the first direction. When the flipping gear moves to the adjustment position, the flipping gear meshes with the flipping rack.

7. The measuring device according to claim 6, characterized in that, The measuring device further includes a locking assembly, which is mounted on the second movable member and is used to lock the flip gear and the second movable member in a locking engagement when the flip gear moves away from the adjustment position along the first direction, and to release the locking engagement between the flip gear and the second movable member when the flip gear moves to the adjustment position along the first direction.

8. The measuring device according to claim 7, characterized in that, The second movable component has a second mounting portion and a third mounting portion spaced apart along the first direction on one side. One end of the mounting shaft seat passes through the second mounting portion and the third mounting portion in sequence and is rotatably connected to the second mounting portion and the third mounting portion. The flipping gear is located between the second mounting portion and the third mounting portion and is fixedly sleeved on the mounting shaft seat. The measuring component is mounted on the other end of the mounting shaft seat. The flipping gear has a locking hole. The second mounting portion has a mounting cavity. The side of the second mounting portion near the flipping gear has a mounting hole corresponding to the locking hole and communicating with the mounting cavity. The mounting portion has an opening extending along the first direction and communicating with the mounting cavity on the side away from the second movable member. The locking assembly includes an elastic member and a movable pin with a third transmission part. The movable pin is movably inserted into the mounting hole. The elastic member is installed in the mounting cavity and is kinetically connected to the movable pin to apply an elastic driving force to the movable pin to insert it into the locking hole. The third transmission part extends out of the mounting cavity from the opening and is configured to engage with the flip rack when the flip gear moves along the first direction to the adjustment position, so that the movable pin moves out of the locking hole and compresses the elastic member.

9. A conveying system, characterized in that, The device includes a conveying device and a measuring device as described in any one of claims 1 to 8, wherein the conveying device is provided with a measuring station and is used to convey the sheet material, and the measuring device is installed at the measuring station and is used to scan and measure the surface of the sheet material.

10. A method for testing sheet metal, characterized in that, The plate inspection method, applied to the conveying system as described in claim 9, includes: The conveyor system transports the sheet metal to the measurement station; The driving component drives the first movable component to move along the first direction through a differential motion mechanism, so that the measuring component scans and measures one side surface of the plate. During this process, the second movable component does not move relative to the first movable component. The driving component drives the second movable component to move along the second direction through the differential motion mechanism, so that the measuring component moves to the other side of the plate. During this process, the first movable component does not move relative to the mounting body. The driving member drives the first movable member to move along the first direction through the differential motion mechanism, so that the measuring member scans and measures the other side surface of the plate. During this process, the second movable member does not move relative to the first movable member.

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