A label printing quality on-line detection device

Abstract

This invention relates to the field of label printing inspection technology, specifically to an online label printing quality inspection device. The device includes a machine body, a controller located on the right side of the front end of the machine body, a visual inspection mechanism fixedly connected to the center of the top wall of the inner cavity of the machine body, a track groove at the front end of the arched plate, a recessed groove in the center of the bottom wall of the inner cavity of the machine body, a slide rail fixedly connected to the bottom wall of the recessed groove, a traction mechanism jointly provided on the outer surface of the slide rail and the inner cavity of the track groove, a tensioning assembly fixedly connected to the rear side of the bottom wall of the inner cavity of the machine body, rectangular slots in the center of both the left and right ends of the machine body, a winding component fixedly connected to the center of the left end of the machine body, and a conveying assembly fixedly connected to the right end of the machine body. This online label printing quality inspection device, through the combined use of the clamping assembly and the tensioning assembly, cuts and repairs defective labels during label roll quality inspection without stopping the machine, thereby improving the efficiency of label quality inspection.

Description

Technical Field

[0001] This invention relates to the field of label printing inspection technology, specifically to an online label printing quality inspection device. Background Technology

[0002] With the development of technology, label printing technology is now widely used in the packaging industry. By printing labels on packaging boxes, users can easily view product information based on the packaging.

[0003] In the label printing production process, traditional offline inspection methods require machine shutdown for sampling and manual verification, resulting in low inspection efficiency, high missed detection rates, and lack of real-time feedback. Existing online inspection equipment often suffers from label conveying misalignment, unstable tension leading to inspection distortion, the need to stop production for rejection and repair of defective labels, interruption of the production process, fixed camera angles susceptible to interference from label reflections, and complex and unsmooth cutting and patching operations for defective labels. These shortcomings severely affect the continuity and overall capacity of the label printing production line, and make it difficult to guarantee the accuracy of printing quality inspection and the stability of subsequent labeling. To address these issues, we propose an online label printing quality inspection device. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides an online label printing quality inspection device, comprising a machine body, a controller located on the right side of the front end of the machine body, a vision inspection mechanism fixedly connected to the middle of the top wall of the inner cavity of the machine body, an arched plate fixedly connected to the middle of the bottom wall of the inner cavity of the machine body, a track groove formed at the front end of the arched plate, a recessed groove formed in the middle of the bottom wall of the inner cavity of the machine body, and a slide rail fixedly connected to the bottom wall of the recessed groove. The outer surface of the slide rail and the inner cavity of the rail groove are jointly provided with a traction mechanism. A tensioning group is fixedly connected to the rear side of the bottom wall of the inner cavity of the machine body. A rectangular groove is opened in the middle of both the left and right ends of the machine body. A winding component is fixedly connected to the middle of the left end of the machine body. A conveying group is fixedly connected to the right end of the machine body. The conveying group includes a drum rotating bracket. An exhaust plate is fixedly connected to the upper left part of the outer surface of the drum rotating bracket. An arc-shaped V plate is fixedly connected to the left side of the outer surface of the drum rotating bracket. An air outlet is opened in the upper right part of the outer surface of the arc-shaped V plate. An exhaust plate is fixedly connected to the inner cavity of the air outlet. The input end of the exhaust plate and the input end of the exhaust plate are both fixedly connected to a connecting pipe head through an air pipe. The lower left side of the drum rotating bracket is fixedly connected to the right end of the machine body.

[0005] In some embodiments, the tensioning assembly includes a base plate, a mounting groove is provided in the middle of the upper end of the base plate, a servo motor is fixedly connected to the inner cavity of the mounting groove, a sliding groove is provided on the rear side of the upper end of the base plate, a threaded rod is rotatably connected to the middle of the inner cavity of the sliding groove, and the front end of the threaded rod passes through the inner cavity of the sliding groove and is fixedly connected to the output end of the servo motor, a sleeve is provided on the inner cavity of the sliding groove and the outer surface of the threaded rod, an electric telescopic rod is fixedly connected to the inner cavity of the sleeve, a drive platform is provided on the output end of the electric telescopic rod and the inner cavity of the sleeve, a disk is fixedly connected to the output end of the drive platform, a rotating rod is fixedly connected to the middle and upper part of the front end of the disk, and the lower end of the base plate is fixedly connected to the bottom wall of the inner cavity.

[0006] In some embodiments, the visual inspection mechanism includes a connecting plate 1, an infrared camera 1 fixedly connected to the middle right side of the lower end of the connecting plate, a housing fixedly connected to the middle left side of the lower end of the connecting plate, a servo motor 5 fixedly connected to the top wall of the inner cavity of the housing, a rotating groove opened at the lower end of the housing, a convex disk jointly provided in the inner cavity of the rotating groove and the output end of the servo motor 5, an electric telescopic rod 2 fixedly connected to the right side of the lower end of the convex disk, a detection group fixedly connected to the output end of the electric telescopic rod 2, a laser printer fixedly connected to the left side of the lower end of the convex disk, and the upper end of the connecting plate 1 fixedly connected to the top wall of the inner cavity of the machine.

[0007] In some embodiments, the detection group includes a fixed plate, with racks fixedly connected to the lower sides of both ends of the fixed plate. A T-shaped groove is formed in the middle of the lower end of the fixed plate, and an auxiliary rod is fixedly connected to the inner cavity of the T-shaped groove. A T-shaped slider is provided on the outer surface of the inner cavity of the T-shaped groove and the auxiliary rod. A connecting plate is fixedly connected to the lower end of the T-shaped slider. A shell column is fixedly connected to the middle of the lower end of the connecting plate. An infrared camera is rotatably connected to both ends of the shell column. A servo motor is fixedly connected to the inner cavity of the shell column. The output end of the servo motor passes through the inner cavity of the shell column and the upper side of the infrared camera and is fixedly connected to a gear. The outer surface of the gear is meshed with the rack located on the front side. A gear is fixedly connected to the upper side of the rear end of the infrared camera. The outer surface of the gear is meshed with the rack located on the rear side. The upper end of the fixed plate is fixedly connected to the output end of the electric telescopic rod.

[0008] In some embodiments, the traction mechanism includes a pneumatic slide table, a telescopic slide rod is fixedly connected to the middle of the upper part of the pneumatic slide table, a locking pin is fixedly connected to the upper rear part of the outer surface of the telescopic slide rod, a U-shaped frame is fixedly connected to the output end of the telescopic slide rod, a clamping assembly is fixedly connected to the upper end of the U-shaped frame, a servo motor is fixedly connected to the front left part of the outer surface of the clamping assembly, a transmission wheel is provided at the output end of the servo motor and on the left side of the clamping assembly, the outer surface of the slide rail is slidably connected to the pneumatic slide table, and the outer surface of the locking pin is slidably connected to the inner cavity of the rail groove.

[0009] In some embodiments, the clamping assembly includes a fixing block, a T-shaped groove II formed at the lower center of the fixing block, a cutting assembly slidably connected to the inner cavity of the T-shaped groove II, an L-shaped plate I fixedly connected to the lower right side of the fixing block, and symmetrical T-shaped grooves III formed on both the left and right sides of the rear end of the fixing block. A groove I is formed at the center of the rear end of the fixing block, and a bidirectional screw is rotatably connected to the inner cavity of the groove I. The left end of the bidirectional screw passes through the inner cavity of the groove I and is fixedly connected to a rear transmission wheel I. T-shaped blocks II are slidably connected to the inner cavities of the two T-shaped grooves III on the same side. Typically, an arc-shaped column is slidably connected to the inner cavity of the groove I. The rear ends of the two T-shaped blocks II on the same side and the arc-shaped column are connected to each other. The rear end is fixedly connected to an arc-shaped sleeve; the left end of each of the two arc-shaped columns is provided with a threaded groove, and the inner cavity of each of the two threaded grooves is respectively engaged with the left and right sides of the outer surface of the bidirectional screw. The inner cavity of each of the two arc-shaped sleeves is fixedly connected to a symmetrical pneumatic telescopic rod. The output end of each of the four pneumatic telescopic rods is fixedly connected to a clamp. The air inlet 1 of each of the four pneumatic telescopic rods is fixedly connected to a pipe head 2 through an air pipe. The air inlet 2 of each of the four pneumatic telescopic rods is fixedly connected to a pipe head 3 through an air pipe. The upper end of the pipe head 2 and the upper end of the pipe head 3 are fixedly connected to a reversing valve. The front end of the reversing valve is fixedly connected to the rear end of the fixed block. The lower end of the fixed block is fixedly connected to the upper end of the U-shaped frame.

[0010] In some embodiments, a servo motor is fixedly connected to the upper horizontal direction of the L-shaped plate, and a gear is fixedly connected to the output end of the servo motor through the L-shaped plate. An arched sleeve is fixedly connected to the lower right side of the L-shaped plate, and the inner cavity of the arched sleeve is sleeved and connected to the outer surface of the gear.

[0011] In some embodiments, the cutting assembly includes a shell plate, a T-shaped strip fixedly connected to the middle of the upper part of the shell plate, an electric telescopic rod three fixedly connected to the rear end of the T-shaped strip, a symmetrical T-shaped groove three opened on the upper side of the front end of the shell plate, a blade plate is provided in the inner cavity of the two T-shaped grooves three and the output end of the electric telescopic rod three, a connecting long plate fixedly connected to the left side of the front end of the shell plate, two rollers one rotatably connected to the middle of the lower side of the front end of the shell plate, and the two rollers one are arranged vertically, a symmetrical blade groove is opened on the rear side of the bottom wall of the inner cavity of the shell plate, a roller two rotatably connected to the middle of the rear side of the bottom wall of the inner cavity of the shell plate, a toothed plate fixedly connected to the right side of the lower end of the shell plate, an L-shaped plate two fixedly connected to the left side of the rear side of the lower end of the shell plate, an electric telescopic rod four fixedly connected to the middle of the upper part of the horizontal direction of the L-shaped plate two, a top plate fixedly connected to the output end of the electric telescopic rod four, a convex block fixedly connected to the upper end of the top plate through the lower end of the shell plate, and a symmetrical semi-circular groove is opened on the front side of the upper end of the shell plate.

[0012] In some embodiments, the outer surface of the T-shaped strip is slidably connected to the inner cavity of the second T-shaped groove, the rear side of the inner cavity of the second T-shaped groove is adapted to the front side of the outer surface of the third electric telescopic rod, the lower side of the outer surface of the toothed plate is meshed with the outer surface of the first gear, and the inner cavities of the two semi-circular grooves are respectively adapted to the sides of the outer surfaces of the two arc-shaped sleeves that are close to each other.

[0013] In some embodiments, circular plates are fixedly connected to both the front and rear sides of the right end of the connecting plate, a servo motor is fixedly connected to the rear side of the lower end of the connecting plate, a positioning shell is fixedly connected to the front side of the left end of the positioning shell on the right side, a gear is provided in the inner cavity of the positioning shell and the output end of the servo motor, the outer surfaces of the two gears are meshed, a rotating shaft is rotatably connected to the middle of the right end of the two circular plates, the left end of the rotating shaft on the rear side passes through the circular plate on the same side and is fixedly connected to the gear on the rear side, the left end of the rotating shaft on the front side passes through the circular plate on the same side and the left end of the gear on the front side passes through the positioning shell and a transmission wheel is fixedly connected, the outer surfaces of the two transmission wheels are connected by a belt.

[0014] The present invention has at least the following beneficial effects: This invention utilizes a pneumatic slide, telescopic slide bar, clamping post, U-shaped frame, and clamping assembly in conjunction with the slide rail and track groove. This not only allows for traction during label roll quality inspection but also, through the coordination of the clamping assembly and tensioning group, enables the cutting and patching of defective labels during quality inspection without requiring machine downtime. This improves label quality inspection efficiency and ensures that qualified labels can be used normally during subsequent continuous labeling without jamming, indirectly increasing the efficiency of subsequent labeling work. In its specific implementation, this invention utilizes the combined use of an electric telescopic rod, a drive platform, a rotating rod, and a disc to not only adjust the tension of the label roll paper but also, through the combined use of a servo motor, a threaded rod, a sleeve, and a sliding groove, to adjust the front-to-back distance of the label roll paper, thus correcting deviations. Furthermore, an infrared camera and a detection group perform secondary infrared recognition detection on the labels, and a laser printer reprints labels with missing characters or omissions that can be corrected. Then, through the combined use of a servo motor, a rotating groove, and a convex disc, the detection group and the laser printer rotate and interchange positions. The detection group then performs another infrared recognition detection on the corrected labels. Labels that pass the detection are wound up by the winding component, while those that fail are cut and repaired using a clamping assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the conveyor assembly of the present invention; Figure 4 This is a schematic diagram of the conveyor assembly of the present invention from another perspective; Figure 5 This is a schematic diagram of the tensioning assembly of the present invention; Figure 6 This is a schematic diagram of the visual inspection mechanism of the present invention; Figure 7 This is a schematic diagram of the detection group of the present invention; Figure 8 This is a schematic diagram of the traction mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle; Figure 10 This is a schematic diagram of the clamping component of the present invention; Figure 11 This is a schematic diagram of the clamping component of the present invention from another perspective; Figure 12 This is a diagram showing the positional relationship between the servo motor 2, the arched sleeve, and the gear 1 of this invention. Figure 13 This is a diagram showing the positional relationship between the T-shaped block, the arc-shaped column, and the threaded groove of the present invention. Figure 14 This is a schematic diagram of the cutting assembly of the present invention; Figure 15 This is a schematic diagram of the cutting assembly of the present invention from another perspective; Figure 16 This is a diagram showing the positional relationship between gear 3, servo motor 3, transmission wheel 2, circular plate, and shaft groove of the present invention.

[0016] In the diagram: 1. Machine body; 12. Settling tank; 13. Rectangular trough; 14. Slide rail; 2. Controller; 3. Rail groove; 4. Arched plate; 5. Conveying assembly; 51. Drum rotating bracket; 52. Exhaust plate one; 53. Air outlet; 54. Arc-shaped V-plate; 55. Exhaust plate two; 56. Connecting pipe head one; 6. Tensioning assembly; 61. Base plate; 62. Servo motor one; 63. Threaded rod; 64. Sleeve column; 65. Sliding groove; 66. Electric telescopic rod one; 67. Drive platform; 68. Rotating rod; 69. Disc; 7. Traction mechanism; 71. Pneumatic slide table; 72. Telescopic slide rod; 73. Locking column 74. Clamping assembly; 741. Fixing block; 7411. Reversing valve; 7412. Pipe head two; 7413. Pipe head three; 7414. Slide groove one; 742. Arc sleeve; 7421. T-shaped block two; 7422. Arc column; 7423. Threaded groove; 743. Pneumatic telescopic rod; 744. Cutting assembly; 7441. Shell plate; 7442. T-shaped strip; 7443. Connecting long plate; 74431. Gear three; 74432. Servo motor three; 74433. Transmission wheel two; 74434. Positioning shell; 74435. Circular plate; 74436. Rotating shaft; 744 4. Roller 1; 7445. Semicircular groove; 7447. Top plate; 7448. L-shaped plate 2; 74481. Electric telescopic rod 4; 7449. Toothed plate; 74491. T-shaped groove 3; 74492. Knife groove; 74493. Roller 2; 74494. Convex block; 74495. Knife plate; 74496. Electric telescopic rod 3; 745. L-shaped plate 1; 7451. Servo motor 2; 7452. Arched sleeve; 7453. Gear 1; 746. T-shaped slide groove 2; 747. Clamping plate; 748. Bidirectional screw; 749. T-shaped slide groove 3; 75. U-shaped frame; 76. 77. Transmission wheel 1; 8. Servo motor 6; 9. Vision inspection mechanism; 10. Connecting plate 1; 11. Infrared camera 1; 12. Inspection group; 13. Fixing plate; 14. Rack; 15. T-slider; 26. Auxiliary rod; 27. T-slot 1; 28. Connecting plate 2; 39. Shell column; 40. Servo motor 4; 51. Gear 5; 62. Infrared camera 2; 73. Laser printer; 84. Rotating groove; 85. Servo motor 5; 86. Outer shell; 87. Electric telescopic rod 2; 88. Convex disc; 9. Rewinding component. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0018] Please see Figure 1-4 This invention provides a technical solution: an online label printing quality inspection device, comprising a body 1, a controller 2 located on the right side of the front end of the body 1, a visual inspection mechanism 8 fixedly connected to the middle of the top wall of the inner cavity of the body 1, an arched plate 4 fixedly connected to the middle of the bottom wall of the inner cavity of the body 1, a rail groove 3 opened at the front end of the arched plate 4, a recessed groove 12 opened in the middle of the bottom wall of the inner cavity of the body 1, a slide rail 14 fixedly connected to the bottom wall of the recessed groove 12, a traction mechanism 7 jointly provided on the outer surface of the slide rail 14 and the inner cavity of the rail groove 3, a tensioning group 6 fixedly connected to the rear side of the bottom wall of the inner cavity of the body 1, rectangular grooves 13 opened in the middle of both the left and right ends of the body 1, a winding component 9 fixedly connected to the middle of the left end of the body 1, and a conveying group 5 fixedly connected to the right end of the body 1; The conveyor assembly 5 includes a rotating drum holder 51. An exhaust plate 52 is fixedly connected to the upper left side of the outer surface of the rotating drum holder 51. An arc-shaped V-plate 54 is fixedly connected to the left side of the outer surface of the rotating drum holder 51. An air outlet 53 is opened on the upper right side of the outer surface of the arc-shaped V-plate 54. An exhaust plate 55 is fixedly connected to the inner cavity of the air outlet 53. Both the input end of the exhaust plate 55 and the input end of the exhaust plate 52 are fixedly connected to a connecting pipe head 56 via air pipes. The lower left side of the rotating drum holder 51 is fixedly connected to the right end of the machine body 1. By adding the machine body 1, label infrared recognition quality detection inside the machine body 1 not only isolates the influence of external light on the detection but also serves as a dustproof function. The conveyor assembly 5 is used to place... The roll of labels is assisted by a slide rail 14 to move the traction mechanism 7. A groove 3 is provided to adjust the height of the traction mechanism 7 during movement. The roll of labels is placed in the conveying group 5. The traction mechanism 7 moves towards the conveying group 5, clamping the label paper and moving it to the left, passing through the tensioning group 6, and passing directly under the vision inspection mechanism 8 until it reaches the right side of the winding component 9. The winding component 9 fixes and winds up the label clamped by the traction mechanism 7. During this process, the vision inspection mechanism 8 performs infrared recognition detection of the label quality, and the tensioning group 6 adjusts the tension. When the label deviates from directly under the vision inspection mechanism 8, it can be corrected to return the label to the correct position.

[0019] It should be noted that the specific installation methods, circuit connection methods, and control methods of the controller 2, the rotary card holder 51, and the winding component 9 are all conventional designs and are standard design methods used by designers. The controller 2 can control all electronic components in the device. The rotary card holder 51 and the winding component 9 are both composed of a servo motor, a support frame, and a winding clamp roller. The rotary card holder 51 is used to place and unwind the label roll, and the winding component 9 is used to fix and wind the label. In detail, firstly, the rolled paper label is placed into the roll rotating holder 51. The roll is slowly unwound through the roll rotating holder 51, and the external air pump is turned on and connected to the air pipe and connecting pipe head 56. The airflow enters the inner cavity of exhaust plate 1 52 and exhaust plate 2 55 through the connecting pipe head 56 and the air pipe respectively. The airflow in exhaust plate 2 55 blows the label at an angle through the air outlet 53, causing the label to unwound to the left side of the arc-shaped V plate 54. Exhaust plate 1 52 is also set at an angle, and the airflow generated by exhaust plate 1 52 blows the label at an angle, thereby causing the label to adhere to the upper left side of the outer surface of the arc-shaped V plate 54 and unwound. When the traction mechanism 7 moves to the left side of the air outlet 53, it can clamp the label and start moving it at a uniform speed towards the winding component 9. Finally, the winding component 9 clamps and fixes the pulled label and starts winding. During this process, it passes through the tensioning group 6 and the vision inspection mechanism 8 in sequence.

[0020] To further explain, such as Figure 5 As shown, the tensioning assembly 6 includes a base plate 61. A mounting groove is provided in the middle of the upper end of the base plate 61. A servo motor 62 is fixedly connected to the inner cavity of the mounting groove. A sliding groove 65 is provided on the rear side of the upper end of the base plate 61. A threaded rod 63 is rotatably connected to the middle of the inner cavity of the sliding groove 65. The front end of the threaded rod 63 passes through the inner cavity of the sliding groove 65 and is fixedly connected to the output end of the servo motor 62. A sleeve post 64 is provided on the inner cavity of the sliding groove 65 and the outer surface of the threaded rod 63. An electric telescopic rod 66 is fixedly connected to the inner cavity of the sleeve post 64. A drive platform 67 is provided on the output end of the electric telescopic rod 66 and the inner cavity of the sleeve post 64. A disc 69 is fixedly connected to the output end of the drive platform 67. A rotating rod 68 is fixedly connected to the middle and upper parts of the front end of the disc 69. The lower end of the base plate 61 is fixedly connected to the bottom wall of the inner cavity.

[0021] It should be noted that the specific installation methods, circuit connection methods, and control methods of the servo motor 62, electric telescopic rod 66, and drive platform 67 are all conventional designs and are standard design methods used by designers. The drive platform 67 consists of a disk frame and a small servo motor installed inside the disk frame. The output end of the small servo motor is fixedly connected to the rear end of the disk 69, driving the disk 69 to rotate at a certain angle inside the disk frame. During the rotation, the rotating rod 68 located at the middle of the front end of the disk 69 rotates while maintaining its position in the vertical and horizontal directions. The rotating rod 68 located on the upper side rotates around the disk 69 and the rotating rod 68 in the middle as the axis. In detail, after the traction mechanism 7 clamps the label and passes it between the two rotating rods 68, the drive table 67 drives the disc 69 to rotate, causing the upper rotating rod 68 to rotate to the right from top to bottom at a certain angle, pressing the label roll. Within a suitable tension range, the label roll is pulled and slid around the front of the outer surface of the two rotating rods 68. During the infrared recognition detection of the label by the vision inspection mechanism 8, if a deviation occurs, the controller 2 controls the servo motor 62 to start, driving the threaded rod 63 to rotate in the inner cavity of the sliding groove 65. The rotation of the threaded rod 63 drives the sleeve 64 to move back and forth in the inner cavity of the sliding groove 65 to a suitable position, thereby driving the label roll to move back and forth to a suitable position, achieving the purpose of correction. In addition, the controller 2 can control the electric telescopic rod 66, which drives the drive table 67 to move in the vertical direction, thereby driving the label roll to adjust its height in the vertical direction.

[0022] To further explain, such as Figure 6-7 As shown, the visual inspection mechanism 8 includes a connecting plate 81. An infrared camera 82 is fixedly connected to the middle of the right side of the lower end of the connecting plate 81. A housing 87 is fixedly connected to the middle of the left side of the lower end of the connecting plate 81. A servo motor 86 is fixedly connected to the top wall of the inner cavity of the housing 87. A rotating groove 85 is opened at the lower end of the housing 87. A convex disk 89 is provided in the inner cavity of the rotating groove 85 and the output end of the servo motor 86. An electric telescopic rod 88 is fixedly connected to the right side of the lower end of the convex disk 89. A detection group 83 is fixedly connected to the output end of the electric telescopic rod 88. A laser printer 84 is fixedly connected to the left side of the lower end of the convex disk 89. The upper end of the connecting plate 81 is fixedly connected to the top wall of the inner cavity of the machine body 1. The detection group 83 includes a fixed plate 831. Racks 832 are fixedly connected to the lower sides of both ends of the fixed plate 831. A T-shaped groove 835 is formed in the middle of the lower end of the fixed plate 831. An auxiliary rod 834 is fixedly connected to the inner cavity of the T-shaped groove 835. A T-shaped slider 833 is provided on the inner cavity of the T-shaped groove 835 and the outer surface of the auxiliary rod 834. A connecting plate 836 is fixedly connected to the lower end of the T-shaped slider 833. A shell column 837 is fixedly connected to the middle of the lower end of the connecting plate 836. An infrared camera is rotatably connected to both ends of the shell column 837. A servo motor 838 is fixedly connected to the inner cavity of the housing column 837. The output end of the servo motor 838 passes through the inner cavity of the housing column 837 and the upper side of the infrared camera 8392 and is fixedly connected to a gear 839. The outer surface of the gear 839 meshes with the rack 832 located on the front side. A gear 8391 is fixedly connected to the upper rear side of the infrared camera 8392. The outer surface of the gear 8391 meshes with the rack 832 located on the rear side. The upper end of the fixing plate 831 is fixedly connected to the output end of the electric telescopic rod 88.

[0023] It should be noted that the specific installation methods, circuit connection methods, and control methods of infrared camera 1 82, laser printer 84, electric telescopic pole 2 88, servo motor 4 838, and infrared camera 2 8392 are all conventional designs and are standard design methods used by designers. Among them, infrared camera 1 82 and infrared camera 2 8392, together with controller 2, can realize infrared recognition and AI algorithms to achieve the purpose of visual quality detection of labels. In detail, when the label roll passes directly below infrared camera 82, infrared camera 82 performs a first infrared recognition quality check on the labels on the roll. Labels that pass the check are then wound up by winding component 9. Labels that are missed or cannot be directly judged as passing undergo a second infrared recognition quality check by infrared camera 8392. During the check, the electric telescopic rod 88 is activated, causing the fixing plate 831 and connecting plate 836 to move vertically up and down, which in turn moves infrared camera 8392 vertically, adjusting the distance between infrared camera 8392 and the label for clearer detection. Activating servo motor 838 drives gear 839 to rotate. Gear 839 rotates on the lower side of the outer surface of rack 832 located at the front, causing connecting plate 836 to move T-shaped slider 833 left and right within the T-slot 835 and the outer surface of auxiliary rod 834. The left and right movement of connecting plate 836 also drives the infrared... The gear 8391 on the upper rear side of camera 2 8392 rotates on the lower side of the outer surface of rack 832 located on the rear side. This causes infrared camera 2 8392 to move to the left while simultaneously deflecting to the right around the housing post 837, or to move to the right while simultaneously deflecting to the left around the housing post 837. This changes the infrared recognition angle of infrared camera 2 8392 on the label, avoiding the influence of label reflection on detection. When a missing character or incomplete printing is detected on the label, the winding component 9 and the rotating drum holder 51 stop winding. The label is re-rolled and unrolled. The laser printer 84 re-prints missing or incomplete characters on the label. After printing, the servo motor 86 drives the convex disk 89 to rotate in the inner cavity of the rotating groove 85. This, in turn, drives the infrared camera 8392 and the laser printer 84 to rotate and exchange positions. The infrared camera 8392 then performs infrared recognition and detection on the re-repaired label again. If the label passes the detection, it is pulled and wound by the winding component 9. If the label fails the detection, it is cut and repaired by the traction mechanism 7.

[0024] To further explain, such as Figure 8-11As shown, the traction mechanism 7 includes a pneumatic slide table 71, a telescopic slide rod 72 is fixedly connected to the middle of the upper end of the pneumatic slide table 71, a locking post 73 is fixedly connected to the upper rear part of the outer surface of the telescopic slide rod 72, a U-shaped frame 75 is fixedly connected to the output end of the telescopic slide rod 72, a clamping assembly 74 is fixedly connected to the upper end of the U-shaped frame 75, a servo motor 77 is fixedly connected to the front left part of the outer surface of the clamping assembly 74, a transmission wheel 76 is provided at the output end of the servo motor 77 and the left side of the clamping assembly 74, the outer surface of the slide rail 14 is slidably connected to the pneumatic slide table 71, and the outer surface of the locking post 73 is slidably connected to the inner cavity of the rail groove 3; The clamping assembly 74 includes a fixing block 741. A T-shaped groove 746 is formed in the middle of the lower end of the fixing block 741. A cutting assembly 744 is slidably connected to the inner cavity of the T-shaped groove 746. An L-shaped plate 745 is fixedly connected to the right side of the lower end of the fixing block 741. Symmetrical T-shaped grooves 749 are formed on both the left and right sides of the rear end of the fixing block 741. A groove 7414 is formed in the middle of the rear end of the fixing block 741. A bidirectional screw 748 is rotatably connected to the inner cavity of the groove 7414. The bidirectional screw 748... The end of the slide groove 7414 is fixedly connected to the inner cavity of the rear transmission wheel 76. T-shaped blocks 7421 are slidably connected to the inner cavities of the two T-shaped slide grooves 749 on the same side. An arc-shaped column 7422 is slidably connected to the inner cavity of the slide groove 7414. An arc-shaped sleeve 742 is fixedly connected to the rear ends of the two T-shaped blocks 7421 and the rear ends of the arc-shaped column 7422 on the same side. A threaded groove 7423 is provided on the left end of each of the two arc-shaped columns 7422. The inner cavities of the two threaded grooves 7423 are respectively connected to the bidirectional screw 74. 8. The outer surface is connected by meshing on both sides. Two arc-shaped sleeves 742 have symmetrically connected pneumatic telescopic rods 743 inside. Clamping plates 747 are fixedly connected to the output ends of all four pneumatic telescopic rods 743. Air inlets 743 are all fixedly connected to pipe heads 7412 via air pipes. Air inlets 743 are also fixedly connected to pipe heads 7413 via air pipes. A replacement is fixedly connected to the upper ends of pipe heads 7412 and 7413. The directional valve 7411 is fixedly connected to the rear end of the fixed block 741 at its front end. The lower end of the fixed block 741 is fixedly connected to the upper end of the U-shaped frame 75. The upper horizontal direction of the L-shaped plate 745 is fixedly connected to the servo motor 7451. The output end of the servo motor 7451 passes through the L-shaped plate 745 and is fixedly connected to the gear 7453. The lower right side of the L-shaped plate 745 is fixedly connected to the arched sleeve 7452. The inner cavity of the arched sleeve 7452 is sleeved and connected to the outer surface of the gear 7453.

[0025] It should be noted that the specific installation methods, circuit connections, and control methods of the pneumatic slide table 71, servo motor six 77, servo motor two 7451, reversing valve 7411, and pneumatic telescopic rod 743 are all conventional designs and are standard design practices for designers. The reversing valve 7411 is connected to an external air pump via an air pipe. First, the air pump is started in conjunction with the air pipe to allow airflow into the reversing valve 7411. The reversing valve 7411 controls the airflow to enter the pipe head three 7413. The air then enters through the air inlet two of the four pneumatic telescopic rods 743, thereby driving the two upper clamping plates 747 and the two lower clamping plates 747 to move closer together, clamping and fixing the beginning of the label roll. The pneumatic slide table 71 is then started to move the telescopic slide rod 72, the clamping post 73, the U-shaped frame 75, and the fixing block 741 to the left. During the movement, the locking pin 73 moves within the inner cavity of the rail groove 3. When the inner cavity of the rail groove 3 is tilted upward, the pneumatic slide table 71 moves to the left while the locking pin 73 tilts upward and stretches the telescopic slide rod 72. Then, it moves horizontally, causing the two clamping plates 747 on the upper and lower sides to clamp the label roll and pass between the two rotating rods 68. When the inner cavity of the rail groove 3 is tilted downward, the pneumatic slide table 71 drives the locking pin 73 to continue moving to the left. The locking pin 73 tilts downward within the rail groove 3, and the telescopic slide rod 72 retracts. When it moves to the side of the winding component 9, the airflow in 7311 enters the air inlet pipe 1 of the four pneumatic telescopic rods 743 through the second pipe head 7412 and the air pipe, respectively. This causes the clamping plates 747 on the upper and lower sides to move away from each other, releasing the clamping of the label roll. The winding component 9 then tightens and winds up the label roll.

[0026] To further explain, such as Figure 11-13As shown, the cutting assembly 744 includes a shell plate 7441. A T-shaped strip 7442 is fixedly connected to the middle of the upper end of the shell plate 7441. An electric telescopic rod 74496 is fixedly connected to the rear end of the T-shaped strip 7442. A T-shaped groove 74491 with left and right symmetry is opened on the upper side of the front end of the shell plate 7441. The inner cavity of the two T-shaped grooves 74491 and the output end of the electric telescopic rod 74496 are provided with a blade plate 74495. A connecting plate 7443 is fixedly connected to the left side of the front side of the lower end of the shell plate 7441. Two rollers 7444 are rotatably connected to the middle of the lower side of the front end of the shell plate 7441, and the two rollers 7444 are arranged vertically. A blade groove 74492 with left and right symmetry is opened on the rear side of the bottom wall of the inner cavity of the shell plate 7441. A roller 74493 is rotatably connected to the middle of the rear side of the bottom wall of the inner cavity of the shell plate 7441. A blade plate 74495 is fixedly connected to the right side of the lower end of the shell plate 7441. A toothed plate 7449 is attached. An L-shaped plate 7448 is fixedly connected to the lower rear left side of the shell plate 7441. An electric telescopic rod 74481 is fixedly connected to the upper middle part of the L-shaped plate 7448 in the horizontal direction. A top plate 7447 is fixedly connected to the output end of the electric telescopic rod 74481. The upper end of the top plate 7447 passes through the lower end of the shell plate 7441 and is fixedly connected to a convex block 74494. A semi-circular groove 7445 with left and right symmetry is opened on the front side of the upper end of the shell plate 7441. The outer surface of the T-shaped strip 7442 is slidably connected to the inner cavity of the T-shaped slide groove 746. The rear side of the inner cavity of the T-shaped slide groove 746 is adapted to the front side of the outer surface of the electric telescopic rod 74496. The lower side of the outer surface of the toothed plate 7449 is meshed with the outer surface of the gear 7453. The inner cavities of the two semi-circular grooves 7445 are respectively adapted to the side of the outer surface of the two arc-shaped sleeves 742 that are close to each other. Both the front and rear sides of the right end of the connecting plate 7443 are fixedly connected to circular plates 74435. A servo motor 74432 is fixedly connected to the rear side of the lower end of the connecting plate 7443. A positioning shell 74434 is fixedly connected to the front side of the left end of the positioning shell 74434 on the right side. Gears 74431 are provided in the inner cavity of the positioning shell 74434 and at the output end of the servo motor 74432. The outer surfaces of the two gears 74431 are meshed. A rotating shaft 744 is rotatably connected to the middle of the right end of each of the two circular plates 74435. 36. The left end of the rear rotating shaft 74436 passes through the same side circular plate 74435 and is fixedly connected to the rear gear 3 74431. The left end of the front rotating shaft 74436 passes through the same side circular plate 74435 and the left end of the front gear 3 74431 passes through the positioning shell 74434. Both are fixedly connected to the transmission wheel 2 74433. The outer surfaces of the two transmission wheels 2 74433 are connected by a belt. The blade plate 74495 is composed of a pressure plate and blades fixedly connected to both the left and right sides of the lower end of the pressure plate.

[0027] It should be noted that the specific installation methods, circuit connection methods, and control methods of the electric telescopic pole four 74481, electric telescopic pole three 74496, and servo motor three 74432 are all conventional designs and are standard design methods used by designers. First, the paper adhesive tape roll is clipped onto the rotating shaft 74436 located on the rear circular plate 74435. The head of the adhesive tape is stretched and first passes between the two rollers one 7444, then it is wrapped upwards from the lower side of the outer surface of roller two 74493 and stretched forward, then it is stretched downwards from the upper side of the outer surface of the upper roller one 7444 and finally connected to the rotating shaft 74436 in the front circular plate 74435. In detail, when it is necessary to cut and repair defective labels, the servo motor 7451 is activated to drive the gear 7453 to rotate on the lower side of the outer surface of the toothed plate 7449, thereby pushing the toothed plate 7449 forward. At the same time, the shell plate 7441 drives the T-shaped strip 7442 to move forward in the inner cavity of the T-shaped groove 746, so that the cutting plate 74495 is positioned directly above the label to be cut. Then, the electric telescopic rod 74496 is activated to drive the cutting plate 74495 to cut vertically downward. The two blades in the cutting plate 74495 penetrate the label roll and are respectively inserted into the two cutting grooves. Inside cavity 74492, the cutting operation is completed. Then, servo motor 74432 is activated, driving two gears 74431 to rotate. This, combined with a belt, causes two transmission wheels 74433 to rotate simultaneously, ultimately rotating two shafts 74436. This causes the paper adhesive tape located on roller 74493 to drag the cut label forward within the shell 7441 and into the rectangular groove 13. The label is then discharged from the device through a discharge chute within the rectangular groove 13, thus removing defective labels. This process is achieved through vertical... The two clamping plates 747 on both sides clamp onto the adjacent label to be cut. Then, the servo motor 77 is started, which, with the help of the belt, drives the two transmission wheels 76 to rotate. The rotation of the transmission wheels 76 drives the bidirectional screw 748 to rotate in the inner cavity of the slide groove 7414 and in the inner cavity of the two threaded grooves 7423. This, in turn, drives the two arc-shaped columns 7422 to move closer to each other in the inner cavity of the T-shaped slide groove 749 on the same side. At the same time, it causes the two T-shaped fasteners 7421 on the left and right sides to move closer to each other in the inner cavity on the same side. By moving the T-shaped fastener 7421 and the arc-shaped column 7422 together, the arc-shaped sleeves 742 on the left and right sides move closer to each other and fit into the inner cavity of the semi-circular groove 7445 on the same side. Finally, the clamping plates 747 on the left and right sides clamp the two adjacent labels after cutting and move closer to each other to align and fit together. Then, the electric telescopic rod 74481 is activated to move the top plate 7447 vertically upward, which in turn moves the convex block 74494 vertically upward to press against the groove position on one side of the paper adhesive tape, pressing the paper adhesive tape tightly against the underside of the two labels to achieve the adhesive repair operation.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online label printing quality inspection device, comprising a body (1), characterized in that: A controller (2) is provided on the right side of the front end of the machine body (1). A vision inspection mechanism (8) is fixedly connected to the middle of the top wall of the inner cavity of the machine body (1). An arched plate (4) is fixedly connected to the middle of the bottom wall of the inner cavity of the machine body (1). A rail groove (3) is opened at the front end of the arched plate (4). A sinkhole (12) is opened in the middle of the bottom wall of the inner cavity of the machine body (1). A slide rail (14) is fixedly connected to the bottom wall of the sinkhole (12). A traction mechanism (7) is provided on the outer surface of the slide rail (14) and the inner cavity of the rail groove (3). A tensioning group (6) is fixedly connected to the rear side of the bottom wall of the inner cavity of the machine body (1). A rectangular groove (13) is opened in the middle of both the left and right ends of the machine body (1). A winding component (9) is fixedly connected to the middle of the left end of the machine body (1). A conveying group (5) is fixedly connected to the right end of the machine body (1). The conveying group (5) includes a drum rotating bracket (51). An exhaust plate (52) is fixedly connected to the upper left side of the outer surface of the drum rotating bracket (51). An arc-shaped V-plate (54) is fixedly connected to the left side of the outer surface of the drum rotating bracket (51). An air outlet (53) is opened on the upper right side of the outer surface of the arc-shaped V-plate (54). An exhaust plate (55) is fixedly connected to the inner cavity of the air outlet (53). The input end of the exhaust plate (55) and the input end of the exhaust plate (52) are both fixedly connected to a connecting pipe head (56) through an air pipe. The lower left side of the drum rotating bracket (51) is fixedly connected to the right side of the machine body (1).

2. The online label printing quality inspection device according to claim 1, characterized in that: The tensioning assembly (6) includes a base plate (61). A mounting groove is provided in the middle of the upper end of the base plate (61). A servo motor (62) is fixedly connected to the inner cavity of the mounting groove. A sliding groove (65) is provided on the rear side of the upper end of the base plate (61). A threaded rod (63) is rotatably connected to the middle of the inner cavity of the sliding groove (65). The front end of the threaded rod (63) passes through the inner cavity of the sliding groove (65) and is fixedly connected to the output end of the servo motor (62). The inner cavity and the outer surface of the threaded rod (63) are provided with a sleeve (64). The inner cavity of the sleeve (64) is fixedly connected to an electric telescopic rod (66). The output end of the electric telescopic rod (66) and the inner cavity of the sleeve (64) are provided with a drive platform (67). The output end of the drive platform (67) is fixedly connected to a disc (69). The middle and upper parts of the front end of the disc (69) are fixedly connected to a rotating rod (68). The lower end of the base plate (61) is fixedly connected to the bottom wall of the inner cavity.

3. The online label printing quality inspection device according to claim 1, characterized in that: The visual inspection mechanism (8) includes a connecting plate (81), an infrared camera (82) is fixedly connected to the middle of the right side of the lower end of the connecting plate (81), a housing (87) is fixedly connected to the middle of the left side of the lower end of the connecting plate (81), a servo motor (86) is fixedly connected to the top wall of the inner cavity of the housing (87), a rotating groove (85) is opened at the lower end of the housing (87), a convex disk (89) is provided in the inner cavity of the rotating groove (85) and the output end of the servo motor (86), an electric telescopic rod (88) is fixedly connected to the right side of the lower end of the convex disk (89), a detection group (83) is fixedly connected to the output end of the electric telescopic rod (88), a laser printer (84) is fixedly connected to the left side of the lower end of the convex disk (89), and the upper end of the connecting plate (81) is fixedly connected to the top wall of the inner cavity of the machine body (1).

4. The online label printing quality inspection device according to claim 3, characterized in that: The detection group (83) includes a fixed plate (831), with racks (832) fixedly connected to the lower sides of both ends of the fixed plate (831). A T-shaped groove (835) is provided in the middle of the lower end of the fixed plate (831). An auxiliary rod (834) is fixedly connected to the inner cavity of the T-shaped groove (835). A T-shaped slider (833) is provided on the inner cavity of the T-shaped groove (835) and the outer surface of the auxiliary rod (834). A connecting plate (836) is fixedly connected to the lower end of the T-shaped slider (833). A shell column (837) is fixedly connected to the middle of the lower end of the connecting plate (836). An infrared sensor is rotatably connected to both ends of the shell column (837). The infrared camera 2 (8392) is fixedly connected to the inner cavity of the shell column (837) by a servo motor 4 (838). The output end of the servo motor 4 (838) passes through the inner cavity of the shell column (837) and the upper side of the infrared camera 2 (8392) and is fixedly connected to a gear 5 (839). The outer surface of the gear 5 (839) meshes with the rack (832) located on the front side. The upper rear end of the infrared camera 2 (8392) is fixedly connected to a gear 4 (8391). The outer surface of the gear 4 (8391) meshes with the rack (832) located on the rear side. The upper end of the fixing plate (831) is fixedly connected to the output end of the electric telescopic rod 2 (88).

5. The online label printing quality inspection device according to claim 1, characterized in that: The traction mechanism (7) includes a pneumatic slide (71), a telescopic slide rod (72) is fixedly connected to the middle of the upper end of the pneumatic slide (71), a locking post (73) is fixedly connected to the upper rear part of the outer surface of the telescopic slide rod (72), a U-shaped frame (75) is fixedly connected to the output end of the telescopic slide rod (72), a clamping assembly (74) is fixedly connected to the upper end of the U-shaped frame (75), a servo motor six (77) is fixedly connected to the front left part of the outer surface of the clamping assembly (74), a transmission wheel one (76) is provided at the output end of the servo motor six (77) and the left side of the clamping assembly (74), the outer surface of the slide rail (14) is slidably connected to the pneumatic slide (71), and the outer surface of the locking post (73) is slidably connected to the inner cavity of the rail groove (3).

6. The online label printing quality inspection device according to claim 5, characterized in that: The clamping assembly (74) includes a fixing block (741). A T-shaped groove (746) is provided in the middle of the lower end of the fixing block (741). A cutting assembly (744) is slidably connected to the inner cavity of the T-shaped groove (746). An L-shaped plate (745) is fixedly connected to the right side of the lower end of the fixing block (741). T-shaped grooves (749) are provided on both the left and right sides of the rear end of the fixing block (741). A groove (741) is provided in the middle of the rear end of the fixing block (741). 4) A bidirectional screw (748) is rotatably connected to the inner cavity of the first slide groove (7414). The left end of the bidirectional screw (748) passes through the inner cavity of the first slide groove (7414) and is fixedly connected to the rear transmission wheel (76). T-shaped blocks (7421) are slidably connected to the inner cavities of the two T-shaped slide grooves (749) on the same side. Arc-shaped columns (7422) are usually slidably connected to the inner cavity of the first slide groove (7414). The rear ends of the two T-shaped blocks (7421) on the same side and the arc-shaped columns (742) are connected to the inner cavity of the first slide groove (7414). 2) The rear end is fixedly connected to an arc-shaped sleeve (742); the left end of each of the two arc-shaped columns (7422) is provided with a threaded groove (7423), the inner cavity of each of the two threaded grooves (7423) is respectively engaged with the left and right sides of the outer surface of the bidirectional screw (748), the inner cavity of each of the two arc-shaped sleeves (742) is fixedly connected with a symmetrical pneumatic telescopic rod (743), the output end of each of the four pneumatic telescopic rods (743) is fixedly connected with a clamping plate (747), and the four pneumatic telescopic rods (748) are fixedly connected with a clamping plate (747). 43) Each of the four air inlets is fixedly connected to a pipe head (7412) via an air pipe. Each of the four air inlets of the pneumatic telescopic rods (743) is fixedly connected to a pipe head (7413) via an air pipe. The upper ends of the pipe head (7412) and the upper ends of the pipe head (7413) are fixedly connected to a reversing valve (7411). The front end of the reversing valve (7411) is fixedly connected to the rear end of the fixing block (741), and the lower end of the fixing block (741) is fixedly connected to the upper end of the U-shaped frame (75).

7. The online label printing quality inspection device according to claim 6, characterized in that: The upper horizontal direction of the L-shaped plate (745) is fixedly connected to the second servo motor (7451). The output end of the second servo motor (7451) passes through the L-shaped plate (745) and is fixedly connected to the gear (7453). The lower right side of the L-shaped plate (745) is fixedly connected to the arched sleeve (7452). The inner cavity of the arched sleeve (7452) is sleeved and connected to the outer surface of the gear (7453).

8. The online label printing quality inspection device according to claim 7, characterized in that: The cutting assembly (744) includes a shell plate (7441). A T-shaped strip (7442) is fixedly connected to the middle of the upper end of the shell plate (7441). An electric telescopic rod (74496) is fixedly connected to the rear end of the T-shaped strip (7442). A symmetrical T-shaped groove (74491) is provided on the upper side of the front end of the shell plate (7441). The inner cavity of the two T-shaped grooves (74491) and the output end of the electric telescopic rod (74496) are provided with a blade plate (74495). A connecting plate (7443) is fixedly connected to the left side of the front end of the shell plate (7441). Two rollers (7444) are rotatably connected to the middle of the lower side of the front end of the shell plate (7441), and the two rollers (7444) are arranged vertically. A symmetrical knife groove (74492) is provided on the rear side of the bottom wall of the inner cavity. A roller (74493) is rotatably connected to the middle of the rear side of the bottom wall of the inner cavity of the shell plate (7441). A toothed plate (7449) is fixedly connected to the right side of the lower end of the shell plate (7441). An L-shaped plate (7448) is fixedly connected to the left side of the rear side of the lower end of the shell plate (7441). An electric telescopic rod (74481) is fixedly connected to the middle of the upper horizontal direction of the L-shaped plate (7448). A top plate (7447) is fixedly connected to the output end of the electric telescopic rod (74481). A convex block (74494) is fixedly connected to the upper end of the top plate (7447) through the lower end of the shell plate (7441). A symmetrical semi-circular groove (7445) is provided on the front side of the upper end of the shell plate (7441).

9. The online label printing quality inspection device according to claim 8, characterized in that: The outer surface of the T-shaped strip (7442) is slidably connected to the inner cavity of the second T-shaped groove (746). The rear side of the inner cavity of the second T-shaped groove (746) is adapted to the front side of the outer surface of the third electric telescopic rod (74496). The lower side of the outer surface of the toothed plate (7449) is meshed with the outer surface of the first gear (7453). The inner cavities of the two semi-circular grooves (7445) are respectively adapted to the sides of the outer surfaces of the two arc-shaped sleeves (742) that are close to each other.

10. The online label printing quality inspection device according to claim 8, characterized in that: The connecting plate (7443) has round plates (74435) fixedly connected to both the front and rear sides of its right end. A servo motor (74432) is fixedly connected to the rear side of the lower end of the connecting plate (7443). A positioning shell (74434) is fixedly connected to the front side of the left end of the positioning shell (74434) on the right side. Gears (74431) are provided in both the inner cavity of the positioning shell (74434) and the output end of the servo motor (74432). The outer surfaces of the two gears (74431) mesh with each other. The two round plates (74435) are connected to each other. 435) A rotating shaft (74436) is rotatably connected to the middle of the right end. The left end of the rotating shaft (74436) located on the rear side passes through the circular plate (74435) on the same side and is fixedly connected to the gear three (74431) located on the rear side. The left end of the rotating shaft (74436) located on the front side passes through the circular plate (74435) on the same side and the left end of the gear three (74431) located on the front side passes through the positioning shell (74434) and is fixedly connected to the transmission wheel two (74433). The outer surfaces of the two transmission wheels two (74433) are connected by a belt.

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