QR code quality grade evaluation device

Abstract

The utility model relates to a two-dimensional code quality grade evaluation device, the two-dimensional code quality grade evaluation device comprises a rack, a work bench, a height adjusting mechanism and a code reader, the work bench is movably connected to the rack, and the work bench can move along a first direction relative to the rack; the height adjusting mechanism is arranged on the rack and located beside the workbench, the height adjusting mechanism comprises a supporting column and an adjusting block, the supporting column is connected to the rack, the adjusting block is movably connected to the supporting column, and the adjusting block can move in the vertical direction relative to the supporting column; the code reader is connected to the adjusting block so that the distance between the code reader and the workbench can be adjusted. The two-dimensional code quality grade evaluation device can adjust the position of the to-be-detected workpiece in the horizontal direction and can adjust the height of the code reader in the vertical direction when facing different types of to-be-detected workpieces, so that the code reader can read the two-dimensional code on the to-be-detected workpiece at a better position, and the quality grade of the to-be-detected workpiece is evaluated. Therefore, the detection effect of the two-dimensional code is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of QR code quality level evaluation devices, and in particular to a QR code quality level evaluation device. Background Technology

[0002] During the production process of some components, production information is recorded using QR codes. For example, parts undergo QR code engraving and scanning for grading in the foundry. When the QR code quality is rated A / B, the part can proceed; when rated C / D / F, the part is scrapped. In subsequent processes, parts also undergo point scanning to record information and receive grading evaluations. Due to differences in ambient light, distance, and angle between different workshops, inconsistencies in grading evaluation results can occur.

[0003] In related technologies, QR code quality rating devices cannot adjust the stopping distance according to actual needs when dealing with different product models, thus affecting the QR code evaluation results. Utility Model Content

[0004] Therefore, it is necessary to provide a QR code quality level evaluation device to address the technical issues affecting the QR code evaluation results, such as the stopping distance of the robotic arm when grasping parts.

[0005] A QR code quality level evaluation device, the QR code quality level evaluation device comprising:

[0006] frame;

[0007] A worktable, which is movably connected to the frame and is capable of moving relative to the frame along a first direction;

[0008] A height adjustment mechanism is provided on the frame and located beside the worktable. The height adjustment mechanism includes a support column and an adjustment block. The support column is connected to the frame, and the adjustment block is movably connected to the support column. The adjustment block can move vertically relative to the support column.

[0009] A barcode reader is connected to the adjustment block so that the distance between the barcode reader and the worktable is adjustable.

[0010] In one embodiment, the support column is movably connected to the frame, and the support column moves relative to the frame along a second direction;

[0011] The first direction and the second direction intersect.

[0012] In one embodiment, the QR code quality level evaluation device includes a first transmission mechanism connected to the frame, and the support column is connected to the first transmission mechanism.

[0013] In one embodiment, the frame includes a support plate with a first guide groove; the first transmission mechanism includes:

[0014] A first drive component is disposed on the support plate;

[0015] A first transmission rod is rotatably connected to the support plate, and the first transmission rod is connected to the first drive assembly in a transmission connection.

[0016] The support column is connected to the first transmission rod, and one end of the support column is located in the first guide groove;

[0017] The first drive assembly drives the first transmission rod to rotate, and the support column moves along the axis of the first transmission rod.

[0018] In one embodiment, the first transmission mechanism further includes:

[0019] The first handwheel is fixedly connected to the end of the first transmission rod that is away from the first drive assembly.

[0020] In one embodiment, the support column is provided with a second guide groove extending in a vertical direction; the QR code quality level evaluation device further includes a second transmission mechanism, the second transmission mechanism comprising:

[0021] The second drive component is disposed on the support column;

[0022] The second transmission rod is rotatably connected to the support column, the second transmission rod is located in the second guide groove, and the second transmission rod is connected to the second drive assembly in a transmission manner;

[0023] The adjusting block is connected to the second transmission rod. When the second drive assembly drives the second transmission rod to rotate, the adjusting block moves along the second guide groove.

[0024] In one embodiment, the cross-sectional shape of the support column is square, the second guide groove is provided on one side of the support column, the adjusting block is constructed as an annular shape, the adjusting block is sleeved on the support column, the inner ring of the adjusting block is provided with a guide protrusion, the guide protrusion is connected to the second transmission rod, and the guide protrusion is provided in the second guide groove.

[0025] In one embodiment, the second transmission mechanism further includes:

[0026] The second handwheel is fixedly connected to one end of the second transmission rod.

[0027] In one embodiment, the QR code quality level evaluation device further includes a third transmission mechanism, which is located between the workbench and the frame. The workbench is connected to the third transmission mechanism so as to drive the workbench to move relative to the frame through the third transmission mechanism.

[0028] In one embodiment, the QR code quality rating device preferably includes:

[0029] A protective cover is provided on the frame, and the worktable, the height adjustment mechanism and the barcode reader are all located inside the protective cover.

[0030] The beneficial effects of this utility model are:

[0031] This invention provides a QR code quality rating device, wherein a frame is used to connect and support a worktable, a height adjustment mechanism, and a barcode reader. The worktable primarily supports the workpiece to be inspected. By movably connecting the worktable to the frame, the worktable can move relative to the frame along a first direction, allowing its position to be adjusted along that direction. A height adjustment mechanism is provided on the frame, allowing the height of the barcode reader connected to it to be adjusted. This enables the barcode reader height to be adjusted according to the size of the workpiece to be inspected, ensuring the optimal detection position of the barcode reader relative to the QR code on the workpiece, thus guaranteeing the QR code detection effect. The height adjustment mechanism includes a support column and an adjustment block. The support column is connected to the frame, and the adjustment block is movably connected to the support column, supporting the adjustment block on the frame via the support column. By adjusting the position of the adjustment block on the support column, the height of the barcode reader connected to the adjustment block can be adjusted. With the above structural form, the QR code quality evaluation device can adjust the position of the workpiece to be inspected in the horizontal direction and adjust the height of the barcode reader in the vertical direction when facing different types of workpieces to be inspected. This allows the barcode reader to read the QR code on the workpiece to be inspected from the best position, thus ensuring the detection effect of the QR code. Attached Figure Description

[0032] Figure 1 A three-dimensional structural diagram of a QR code quality rating device provided in an embodiment of this utility model;

[0033] Figure 2 A three-dimensional structural diagram of the QR code quality rating device provided in an embodiment of this utility model after removing the protective cover.

[0034] Figure label:

[0035] Frame 100; Support plate 110; First guide groove 111; Third guide groove 112; Caster wheel 120; Worktable 200; Height adjustment mechanism 300; Support column 310; Second guide groove 311; Adjusting block 320; Guide protrusion 321; Code reader 400; First transmission mechanism 500; First drive assembly 510; First motor 511; First drive gear 512; First driven gear 513; First synchronous belt 514; First transmission rod 520; First handwheel 530; Second transmission mechanism 600; Second drive assembly 610; Second motor 611; Second drive gear 612; Second driven gear 613; Second synchronous belt 614; Second transmission rod 620; Second handwheel 630; Third transmission mechanism 700; Third transmission rod 710; Slider 720; Third handwheel 730; Protective cover 800; First direction X; Second direction Y; Vertical direction Z. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model 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 utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0037] In the description of this utility model, 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0041] It should be noted that when 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. 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 intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] See Figures 1 to 2 This utility model provides a QR code quality level evaluation device, which includes a frame 100, a worktable 200, a height adjustment mechanism 300, and a barcode reader 400. The worktable 200 is movably connected to the frame 100 and can move relative to the frame 100 along a first direction X. The height adjustment mechanism 300 is disposed on the frame 100 and located beside the worktable 200. The height adjustment mechanism 300 includes a support column 310 and an adjustment block 320. The support column 310 is connected to the frame 100, and the adjustment block 320 is movably connected to the support column 310 and can move relative to the support column 310 along a vertical direction Z. The barcode reader 400 is connected to the adjustment block 320 so that the distance between the barcode reader 400 and the worktable 200 is adjustable.

[0043] This technical solution provides a QR code quality level evaluation device, wherein a frame 100 is used to connect and support a worktable 200, a height adjustment mechanism 300, and a barcode reader 400. The worktable 200 mainly supports the workpiece to be inspected. By movably connecting the worktable 200 to the frame 100, the worktable 200 can move relative to the frame 100 along a first direction X, thereby allowing the worktable 200 to adjust its position along the first direction X. By providing a height adjustment mechanism 300 on the frame 100, the height of the barcode reader 400 connected to the height adjustment mechanism 300 can be adjusted. This allows the height of the barcode reader 400 to be adjusted according to the size of the workpiece to be inspected when dealing with different types of workpieces, thus ensuring that the height of the barcode reader 400 relative to the QR code on the workpiece is at an optimal detection position, thereby guaranteeing the detection effect of the QR code. The height adjustment mechanism 300 includes a support column 310 and an adjustment block 320. The support column 310 is connected to the frame 100, and the adjustment block 320 is movably connected to the support column 310. The support column 310 supports the adjustment block 320 on the frame 100. By adjusting the position of the adjustment block 320 on the support column 310, the height of the barcode reader 400 connected to the adjustment block 320 can be adjusted. With this structure, the QR code quality assessment device can adjust the position of the workpiece to be inspected in the horizontal direction and adjust the height of the barcode reader 400 in the vertical Z-direction when facing different types of workpieces. This allows the barcode reader 400 to read the QR code on the workpiece in an optimal position, thus ensuring the effectiveness of the QR code detection.

[0044] It is understood that the frame 100 includes a frame and a support plate 110. The frame can be formed by welding aluminum alloy profiles or angle steel end to end. The support plate 110 is fixedly connected to the top of the frame. Sealing plates are provided on the outer side and bottom of the frame to enclose the cavity formed by the frame. It is understood that the wiring harnesses and components required for the QR code quality assessment device can be housed within the cavity of the frame. Four casters 120 are provided at the bottom of the frame to facilitate the movement of the entire QR code quality assessment device.

[0045] The barcode reader 400 is used to read barcodes or QR codes. The reader 400 uses a light source below 7000K to illuminate the QR code on the workpiece at 45˚. The reflected light from the black and white areas of the QR code is transmitted through an imaging lens to an image sensor (CCD or CMOS camera, etc.) and converted into a digital image. In this embodiment, the QR code quality assessment device also includes an image sensor and a computer. The image sensor is communicatively connected to the reader 400 and the computer. The QR code signal read by the reader 400 is transmitted to the image sensor, which converts the signal into a digital image signal and transmits it to the computer via an image acquisition card. The computer uses a program in the decoding system to perform image preprocessing, barcode extraction, decoding, and recognition steps to recover and output the data characters in the QR code, thus completing the reading and output of the QR code.

[0046] like Figure 1 and Figure 2 As shown, in one embodiment, the support column 310 is movably connected to the frame 100, and the support column 310 moves relative to the frame 100 along a second direction Y; wherein the first direction X and the second direction Y intersect. By movably connecting the support column 310 to the frame 100, the support column 310 can move relative to the frame 100 along the second direction Y. Thus, by moving the support column 310 along the second direction Y of the horizontal plane, and by moving the worktable 200 along the first direction X of the horizontal plane, the QR code on the workpiece to be tested on the worktable 200 can be aligned.

[0047] It should be noted that in this embodiment, the first direction X is the front-to-back direction along the horizontal plane, and the second direction Y is the left-to-right direction along the horizontal plane. Of course, the first direction X and the second direction Y are defined here only for ease of understanding, and there is no limitation on the range of directions of movement of the worktable 200 and the support frame relative to the frame 100.

[0048] Furthermore, the QR code quality level evaluation device includes a first transmission mechanism 500, which is connected to the frame 100, and a support column 310 is connected to the first transmission mechanism 500. By driving the support column 310 to the frame 100 through the first transmission mechanism 500, the first transmission mechanism 500 drives the support column 310 to move relative to the frame 100 along the second direction Y, thereby enabling the barcode reader 400 to move relative to the frame 100 along the second direction Y.

[0049] Specifically, the support plate 110 is provided with a first guide groove 111; the first transmission mechanism 500 includes a first drive assembly 510 and a first transmission rod 520, the first drive assembly 510 being disposed on the support plate 110; the first transmission rod 520 being rotatably connected to the support plate 110, and the first transmission rod 520 being drively connected to the first drive assembly 510; a support column 310 being connected to the first transmission rod 520, one end of the support column 310 being located within the first guide groove 111; wherein, the first drive assembly 510 drives the first transmission rod 520 to rotate, and the support column 310 moves along the axis of the first transmission rod 520. The first transmission mechanism 500 also includes a first handwheel 530, the first handwheel 530 being fixedly connected to the end of the first transmission rod 520 opposite to the first drive assembly 510.

[0050] In this embodiment, a first transmission rod 520 is rotatably connected to the support plate 110 by providing a first guide groove 111 on the support plate 110. Specifically, the first transmission rod 520 is rotatably disposed within the first guide groove 111. The first transmission rod 520 is connected to the first drive assembly 510 for driving the first transmission rod to rotate. A support column 310 is connected to the first transmission rod 520, and one end of the support column 310 is disposed within the first guide groove 111. This ensures that when the first transmission rod 520 rotates relative to the support plate 110, the support column 310 is limited by the groove wall of the first guide groove 111, thereby allowing the support column 310 to move only along the axis of the first transmission rod 520.

[0051] In this embodiment, the first transmission rod 520 is a lead screw. The first drive assembly 510 includes a first motor 511, a first driving gear 512, and a first driven gear 513. The motor mount of the first motor 511 is fixedly connected to the support base. The first driving gear 512 is fixedly connected to the output shaft of the first motor 511. The first driven gear 513 is fixedly connected to the first transmission rod 520 and rotatably connected to the support base. A first synchronous belt 514 is tensioned between the first driving gear 512 and the second driven gear 513. When the first motor 511 drives the first driving gear 512 to rotate, the first synchronous belt 514 moves relative to the support plate 110, thereby driving the first driven gear 513 to rotate relative to the support plate 110, which in turn drives the first transmission rod 520 to rotate. The support column 310 is provided with an internal thread. When the first transmission rod 520 rotates, the support column 310 moves along the axis of the first transmission rod 520, thereby driving the barcode reader 400 to move along the axis of the first transmission rod 520.

[0052] By providing a first handwheel 530 at the end of the first transmission rod 520 away from the first drive assembly 510 and fixing the first handwheel 530 to the first transmission rod 520, the position of the support column 310 along the second direction Y can be manually adjusted by rotating the first handwheel 530 when needed.

[0053] In this embodiment, the cross-sectional shape of the support column 310 is constructed as a square or rectangular structure. The two opposite sides of the support column 310 are in contact with the groove wall of the first guide groove 111, but the support column 310 can slide relative to the first guide groove 111. This allows the first guide groove 111 to guide the movement of the support column 310. In addition, the groove wall of the first guide groove 111 can limit the rotation of the support column 310, so that the support column 310 can only move along the first guide groove 111.

[0054] like Figure 1 and Figure 2 As shown, in one embodiment, a second guide groove 311 extending in the vertical direction Z is constructed on the support column 310; the QR code quality level evaluation device further includes a second transmission mechanism 600, which includes a second drive assembly 610 and a second transmission rod 620. The second drive assembly 610 is disposed on the support column 310; the second transmission rod 620 is rotatably connected to the support column 310, and is located within the second guide groove 311. The second transmission rod 620 is driveably connected to the second drive assembly 610; an adjusting block 320 is driveably connected to the second transmission rod 620. When the second drive assembly 610 drives the second transmission rod 620 to rotate, the adjusting block 320 moves along the second guide groove 311. The second transmission mechanism 600 also includes a second handwheel 630, which is fixedly connected to one end of the second transmission rod 620.

[0055] In this embodiment, a second transmission rod 620 is rotatably connected to the support column 310 by providing a second guide groove 311 on the support column 310. Specifically, the second transmission rod 620 is rotatably disposed within the second guide groove 311. The second transmission rod 620 is connected to the second drive assembly 610 so that the second drive assembly 610 drives the second transmission rod to rotate. An adjusting block 320 is connected to the second transmission rod 620 so that when the second transmission rod 620 rotates relative to the support column 310, the adjusting block 320 is limited by the groove wall of the second guide groove 311, thereby ensuring that the adjusting block 320 can only move along the axis of the second transmission rod 620. This achieves the adjustment of the height of the barcode reader 400.

[0056] In this embodiment, the second transmission rod 620 is a lead screw. The second drive assembly 610 includes a second motor 611, a second driving gear 612, and a second driven gear 613. The motor mount of the second motor 611 is fixedly connected to the top of the support column 310. The second driving gear 612 is fixedly connected to the output shaft of the second motor 611. The second driven gear 613 is fixedly connected to the second transmission rod 620 and rotatably connected to the support column 310. A second synchronous belt 614 is tensioned between the second driving gear 612 and the second driven gear 613. When the second motor 611 drives the second driving gear 612 to rotate, the second synchronous belt 614 moves relative to the support column 310, thereby driving the second driven gear 613 to rotate relative to the support column 310, which in turn drives the second transmission rod 620 to rotate. The adjusting block 320 is provided with an internal thread. When the second transmission rod 620 rotates, the adjusting block 320 moves along the axis of the second transmission rod 620, thereby driving the code reader 400 to move along the axis of the second transmission rod 620.

[0057] like Figure 1 and Figure 2 As shown, more specifically, the cross-sectional shape of the support column 310 is constructed as a square, the second guide groove 311 is provided on one side of the support column 310, the adjusting block 320 is constructed as an annular shape, the adjusting block 320 is sleeved on the support column 310, the inner ring of the adjusting block 320 is provided with a guide protrusion 321, the guide protrusion 321 is connected to the second transmission rod 620, and the guide protrusion 321 is provided in the second guide groove 311.

[0058] By setting the cross-sectional shape of the support column 310 to square, it not only serves to limit the mutual positioning with the first guide groove 111, but also to limit the adjustment block 320, preventing the adjustment block 320 from rotating relative to the support column 310. Specifically, the adjustment block 320 is set in a ring shape and sleeved on the support column 310, so that the inner wall of the adjustment block 320 mutually limits the mutual positioning with the support column 310, allowing the adjustment block 320 to move only along the axial direction of the support column 310, and preventing it from rotating relative to the support column 310. Furthermore, by setting a guide protrusion 321 on the inner ring of the adjustment block 320 and placing the guide protrusion 321 within the second guide groove 311, the guide protrusion 321 and the second guide groove 311 can mutually limit each other, thereby preventing the adjustment block 320 from rotating relative to the support column 310, and allowing it to only move along the axial direction of the support column 310.

[0059] like Figure 1 and Figure 2As shown, in one embodiment, the QR code quality level evaluation device further includes a third transmission mechanism 700, which is located between the workbench 200 and the frame 100. The workbench 200 is connected to the third transmission mechanism 700 so as to drive the workbench 200 to move relative to the frame 100 through the third transmission mechanism 700.

[0060] By placing a third transmission mechanism 700 between the worktable 200 and the frame 100, the worktable 200 is moved relative to the frame 100 along the first direction X. Specifically, the third mechanism includes a third transmission rod 710 and a slider 720. A third guide groove 112 perpendicular to the first guide groove 111 is provided on the support plate 110, and the third guide groove 112 extends along the first direction X. The slider 720 is movably disposed within the third guide groove 112, and the third transmission rod 710 is rotatably disposed within the third guide groove 112. The slider 720 and the third transmission rod 710 are connected in a transmission manner. A third handwheel 730 is provided at one end of the third transmission rod 710. By driving the third handwheel 730, the third transmission rod 710 can be driven to rotate relative to the support plate 110. Since there is a limit between the slider 720 and the groove wall of the third guide groove 112, the slider 720 can only move along the third guide groove 112 under the transmission action of the third transmission rod 710. The worktable 200 is fixedly connected to the slider 720, so that the slider 720 drives the worktable 200 to move along the first direction X.

[0061] like Figure 1 and Figure 2 As shown, in one embodiment, the QR code quality level evaluation device includes a protective cover 800, which is mounted on the frame 100. The worktable 200, the height adjustment mechanism 300, and the code reader 400 are all located inside the protective cover 800.

[0062] When reading QR codes, ambient light and noise significantly affect the image acquisition effect. Therefore, a brown and white protective cover 800 is used to isolate ambient light and reduce noise from affecting image acquisition. The protective cover 800 is mounted on the frame 100 to block ambient light. Two doors are located on the protective cover: a rear door, normally closed, is used for maintenance or adjustments; the left door serves as an observation door, used before use to adjust the position of the workpiece relative to the reader 400, and is closed to block ambient light during operation.

[0063] In this embodiment, a laser displacement sensor is also provided on the adjustment block 320 to measure the distance between the QR code on the workpiece to be tested and the code reader 400, ensuring that the measurement distance meets the requirements.

[0064] 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.

[0065] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A QR code quality level evaluation device, characterized in that, The QR code quality rating device includes: frame; A worktable, which is movably connected to the frame and is capable of moving relative to the frame along a first direction; A height adjustment mechanism is provided on the frame and located beside the worktable. The height adjustment mechanism includes a support column and an adjustment block. The support column is connected to the frame, and the adjustment block is movably connected to the support column. The adjustment block can move vertically relative to the support column. A barcode reader is connected to the adjustment block so that the distance between the barcode reader and the worktable is adjustable.

2. The QR code quality level evaluation device according to claim 1, characterized in that, The support column is movably connected to the frame, and the support column moves relative to the frame along a second direction; The first direction and the second direction intersect.

3. The QR code quality level evaluation device according to claim 2, characterized in that, The QR code quality rating device includes a first transmission mechanism connected to the frame, and the support column is connected to the first transmission mechanism.

4. The QR code quality level evaluation device according to claim 3, characterized in that, The frame includes a support plate, and the support plate is provided with a first guide groove; the first transmission mechanism includes: A first drive component is disposed on the support plate; A first transmission rod is rotatably connected to the support plate, and the first transmission rod is connected to the first drive assembly in a transmission connection. The support column is connected to the first transmission rod, and one end of the support column is located in the first guide groove; The first drive assembly drives the first transmission rod to rotate, and the support column moves along the axis of the first transmission rod.

5. The QR code quality level evaluation device according to claim 4, characterized in that, The first transmission mechanism further includes: The first handwheel is fixedly connected to the end of the first transmission rod that is away from the first drive assembly.

6. The QR code quality level evaluation device according to claim 1, characterized in that, The support column is provided with a second guide groove extending in a vertical direction; the QR code quality level evaluation device further includes a second transmission mechanism, which includes: The second drive component is disposed on the support column; The second transmission rod is rotatably connected to the support column, the second transmission rod is located in the second guide groove, and the second transmission rod is connected to the second drive assembly in a transmission manner; The adjusting block is connected to the second transmission rod. When the second drive assembly drives the second transmission rod to rotate, the adjusting block moves along the second guide groove.

7. The QR code quality level evaluation device according to claim 6, characterized in that, The cross-sectional shape of the support column is square. The second guide groove is provided on one side of the support column. The adjusting block is constructed as an annular shape and is sleeved on the support column. The inner ring of the adjusting block is provided with a guide protrusion. The guide protrusion is connected to the second transmission rod and is located in the second guide groove.

8. The QR code quality level evaluation device according to claim 6, characterized in that, The second transmission mechanism also includes: The second handwheel is fixedly connected to one end of the second transmission rod.

9. The QR code quality level evaluation device according to any one of claims 1-8, characterized in that, The QR code quality level evaluation device also includes a third transmission mechanism, which is located between the workbench and the frame. The workbench is connected to the third transmission mechanism so as to drive the workbench to move relative to the frame through the third transmission mechanism.

10. The QR code quality level evaluation device according to any one of claims 1-8, characterized in that, The QR code quality level evaluation device preferably includes: A protective cover is provided on the frame, and the worktable, the height adjustment mechanism and the barcode reader are all located inside the protective cover.

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