A sheet labeling machine

Abstract

The utility model relates to a kind of sheet labeler, including six-axis industrial robot, the six-axis industrial robot side is provided with the feeding device for gradually separating sheet;Label feeding device for separating label one by one is provided in the six-axis industrial robot front, first detection component is provided between adjacent six-axis industrial robot and label feeding device;The other side of the six-axis industrial robot is provided with the feeding conveyor for transportation;The output end of the feeding conveyor is provided with discharging device;Second detection component is provided above the feeding conveyor;The output end of the label feeding device is provided with third detection component directly above it.The utility model has structure design reasonable, high degree of automation, high and detect comprehensive label precision.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to the technical field of labeling equipment, specifically an automated sheet labeling machine capable of accurately bonding sheet materials and labels. Background Technology

[0002] Labeling is often required for various sheet materials to achieve product identification and information traceability. Currently, sheet labeling equipment on the market generally suffers from the following problems: First, sheets tend to stack and stick together during the feeding process, resulting in multiple sheets being fed at once, affecting the continuity and stability of subsequent labeling processes; second, the accuracy of label separation and synchronization with the sheet is low, easily leading to label misalignment and missed labeling, resulting in a lower product qualification rate; third, the lack of a multi-dimensional inspection mechanism after labeling makes it impossible to detect labeling defects in a timely manner, causing unqualified products to flow into the next process; fourth, the coordination between the various components of the equipment is poor, the overall automation level is low, requiring significant manual intervention and resulting in low production efficiency.

[0003] In view of this, there is an urgent need for an automated sheet labeling machine that can achieve precise sheet feeding, efficient label separation, precise control of the labeling process, and comprehensive quality inspection, so as to improve production efficiency and product labeling quality. Summary of the Invention

[0004] The purpose of this utility model is to provide a sheet labeling machine with reasonable structural design, high degree of automation, high labeling accuracy and comprehensive detection, so as to solve the problems of difficult feeding, low labeling accuracy, incomplete detection and low degree of automation in the existing sheet labeling machine.

[0005] To achieve the above technical solution, the technical solution of this utility model is as follows: A sheet labeling machine includes a six-axis industrial robot. A feeding device for gradually separating sheets is provided on one side of the six-axis industrial robot; a label feeding device for separating labels one by one is provided directly in front of the six-axis industrial robot; a first detection component is provided between adjacent six-axis industrial robots and the label feeding device; a feeding conveyor for transportation is provided on the other side of the six-axis industrial robot; a discharging device is provided at the output end of the feeding conveyor; a second detection component is provided above the feeding conveyor; and a third detection component is provided directly above the output end of the label feeding device.

[0006] Furthermore, the feeding device includes a hopper base with an array of adjustable-spaced raw material hoppers. By adjusting the spacing between the hoppers, it can accommodate sheet materials of different specifications, improving the versatility of the equipment. A symmetrically arranged, rolling brush component is positioned on the top of each hopper to comb the sheets, preventing them from sticking together and ensuring they can be separated individually. A lifting component is vertically mounted inside the hopper, gradually raising the sheets at the bottom to ensure the top sheets are always in a easily graspable position. A movable material handling robot is mounted on the top of the hopper, grabbing and transporting the sheets to a designated location. A receiving mechanism is located on one side of the hopper near the six-axis industrial robot, receiving the sheets from the robot and positioning them for precise gripping by the six-axis robot.

[0007] Specifically, the raw material silo includes a side plate with a long, rectangular through-hole. This rectangular through-hole provides space for the lifting and lowering of the material lifting component and facilitates the operator's observation of the remaining sheet material inside the silo. A plasma air bar is installed at an angle on the top of the side plate. The plasma air bar generates ion wind to eliminate static electricity on the surface of the sheet material, further preventing the sheet material from sticking together due to static electricity. Side limiting plates are symmetrically arranged on one side of the side plate. The spacing between adjacent side limiting plates is adjustable. By adjusting the spacing of the side limiting plates, sheets of different widths can be limited. A front limiting plate is arranged directly opposite the side plate. The front limiting plate and the side limiting plate work together to achieve all-round limiting of the sheet material, ensuring that the sheet material is neatly stacked in the raw material silo.

[0008] The roller brush component includes a roller brush bracket that can be detachably mounted on the raw material hopper. The roller brush bracket provides stable mounting support for the roller brush motor and the roller brush, and the detachable design facilitates later maintenance and replacement. The roller brush motor is fixedly mounted on the roller brush bracket, and the roller brush motor provides power for the rotation of the roller brush. The roller brush is detachably mounted on the output end of the roller brush motor, and one side of the roller brush extends into the inside of the raw material hopper. The roller brush rotates under the drive of the roller brush motor to comb the surface of the sheet material and separate the adhered sheet material.

[0009] The lifting component includes a vertically arranged lifting module, which adopts a high-precision linear guide rail structure to ensure the smoothness and accuracy of the lifting process. The output end of the lifting module is arrayed with lifting arms that extend into the inside of the raw material bin. The number of lifting arms can be adjusted according to the size of the sheet to ensure stable support for the sheet. The lifting module drives the lifting arms to lift and lower, thereby driving the sheet in the raw material bin to lift and lower synchronously.

[0010] The material handling robot includes a horizontally placed rodless cylinder, which provides power for the horizontal movement of the robot and features smooth operation and rapid response. A lifting cylinder is installed at the output end of the rodless cylinder to drive the suction cup bracket to rise and fall. The suction cup bracket is also installed at the output end of the lifting cylinder, and an array of suction cups is arranged on the bracket. The suction cups are made of elastic material and can closely adhere to the surface of the sheet, achieving gripping of the sheet through negative pressure adsorption, thus avoiding damage to the sheet surface.

[0011] Furthermore, the first, second, and third detection components are all vision detection components. Vision detection components have the advantages of high detection accuracy and fast response speed, enabling accurate detection of sheets and labels. The second and third detection components use top-to-bottom light paths to facilitate comprehensive imaging of the sheets on the feeding conveyor and the labels output by the label feeding device. The first detection component uses bottom-to-top light paths to detect the sheets and labels gripped by the six-axis industrial robot from below, avoiding blind spots.

[0012] Each vision inspection component includes an industrial camera, a lens, a light source, and an image processor. The industrial camera is used to capture images of the object being inspected. The lens can adjust the focal length according to the inspection requirements. The light source provides stable lighting conditions for the image capture to ensure image clarity. The image processor is used to analyze and process the captured images to determine whether the object being inspected meets the requirements.

[0013] Furthermore, the feeding and conveying device includes a negative pressure conveyor belt with a negative pressure chamber. The negative pressure chamber is connected to a vacuum pump through a pipe. Under negative pressure, the sheet material can be tightly adsorbed onto the conveyor belt, avoiding problems such as displacement and wrinkles during transportation. A material accumulation tray is provided near the end of the negative pressure conveyor belt. When the equipment experiences a brief malfunction, the material accumulation tray can be used to temporarily store the sheet material, preventing the sheet material from accumulating on the conveyor belt. A roller pressing mechanism is provided on the negative pressure conveyor belt that can reciprocate back and forth in the vertical direction. The roller pressing mechanism is used to roll the labeled sheet material to ensure that the label is tightly adhered to the sheet material, preventing the label from bubbling or falling off.

[0014] Specifically, the roller pressing mechanism includes a roller pressing base, which is fixedly installed on the support of the negative pressure conveyor belt; a pressing cylinder is provided on one side of the roller pressing base, and a roller is movably provided on the other side. The roller is made of rubber and has a certain degree of elasticity, which can adapt to sheets of different thicknesses; the pressing cylinder can drive the roller to move back and forth in the vertical direction, and the pressing pressure can be controlled by adjusting the height of the roller; a spring is provided between the adjacent pressing cylinder and the roller, which can play a buffering role to avoid the roller from putting too much pressure on the sheet and damaging the sheet.

[0015] Furthermore, the unloading device includes an unloading conveyor belt assembly, which is used to transport the labeled and inspected sheets to a designated position. A lateral moving component is installed on the unloading conveyor belt assembly, which adopts a linear module structure for high operating precision. A crossbeam is movably mounted on an adjacent lateral moving component, driving the crossbeam to move along the width of the unloading conveyor belt assembly. An unloading lifting cylinder is positioned at the center of the crossbeam, and an unloading suction cup is movably inserted into the crossbeam. The unloading suction cup is connected to a negative pressure system, achieving sheet gripping through negative pressure adsorption. The unloading lifting cylinder can drive the unloading suction cup to reciprocate, achieving lifting and lowering of the suction cup, thereby completing the sheet gripping and placement actions.

[0016] Furthermore, the end effector of the six-axis industrial robot is detachably equipped with a negative pressure suction plate with densely packed suction holes. The densely packed suction holes can ensure that the negative pressure suction plate forms a uniform adsorption force between the negative pressure suction plate and the sheet and label, thereby improving the stability of gripping. The detachable design makes it easy to replace the negative pressure suction plate with different specifications according to the size of the sheet and label, thereby improving the adaptability of the equipment.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1) By setting up a feeding device, the roller brush component and plasma air bar can effectively prevent the sheet from sticking together, the lifting component ensures that the sheet is always in a position that is easy to grasp, the raw material handling robot realizes the automated handling of the sheet, and the receiving mechanism accurately positions the sheet, thereby achieving efficient and accurate feeding of the sheet and improving the stability and efficiency of the feeding process.

[0018] 2) This utility model is equipped with a label feeding device for separating the labels one by one. With the precise operation of a six-axis industrial robot, it can achieve precise bonding of the label and the sheet. At the same time, the first detection component, the second detection component and the third detection component form a comprehensive detection system to detect the sheet gripping state, the label separation state and the product after labeling, respectively, so as to detect unqualified products in time and improve the product pass rate.

[0019] 3) The feeding and conveying device of this utility model adopts a negative pressure conveyor belt to ensure the stability of the sheet during transportation. The roller pressing mechanism rolls the labeled sheet to ensure that the label is tightly attached to the sheet. The unloading device realizes the automatic unloading of the sheet after labeling. All components of the entire equipment work together, with a high degree of automation, reducing manual intervention and significantly improving production efficiency.

[0020] 4) Many components in this utility model equipment adopt adjustable structures, such as adjustable raw material bin spacing, adjustable side limit plate spacing, and detachable negative pressure suction plate, which can adapt to different specifications of sheets and labels, improving the versatility and practicality of the equipment. Attached Figure Description

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] Figure 1 A 3D model of a sheet labeling machine; Figure 2 A 3D diagram of the feeding device; Figure 3 This is a 3D diagram of the roller pressing mechanism.

[0023] Explanation of reference numerals in the attached drawings: 1. Six-axis industrial robot; 2. Feeding device; 21. Base; 22. Raw material bin; 23. Roller brush assembly; 24. Lifting assembly; 25. Raw material handling robot; 26. Receiving mechanism; 221. Side plate; 222. Plasma air bar; 223. Side limiting plate; 224. Front limiting plate; 231. Roller brush bracket; 232. Roller brush motor; 233. Roller brush; 241. Lifting module; 242. Lifting arm; 251. Rodless cylinder; 252. Lifting cylinder; 2 53. Suction cup bracket; 254. Suction cup; 3. Label feeding device; 4. First detection component; 5. Feeding conveyor device; 51. Negative pressure conveyor belt; 52. Accumulation tray; 53. Roller pressing mechanism; 531. Roller pressing seat; 532. Pressing cylinder; 533. Roller; 534. Spring; 6. Unloading device; 61. Unloading conveyor belt assembly; 62. Lateral movement assembly; 63. Unloading lifting cylinder; 64. Unloading suction cup; 7. Second detection component; 8. Third detection component; 9. Negative pressure suction plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Please see the appendix Figures 1 to 3 As shown: A sheet labeling machine includes a six-axis industrial robot 1. The six-axis industrial robot 1 has six degrees of freedom and can achieve precise movement in space. Its end is detachably equipped with a negative pressure suction plate 9 with dense suction holes. The dense suction holes can form a uniform adsorption force between the negative pressure suction plate 9 and the sheet or label, ensuring the stability of gripping. At the same time, the detachable design makes it easy to replace the appropriate negative pressure suction plate 9 according to the size of the sheet or label.

[0027] A feeding device 2 for gradually separating sheets is provided on one side of the six-axis industrial robot 1. The feeding device 2 includes a hopper base 21, which is welded from a steel structure and has high strength and stability. The hopper base 21 is arrayed with adjustable-spaced raw material hoppers 22. The number of raw material hoppers 22 can be set according to production needs. In this embodiment, two raw material hoppers 22 are provided. The spacing between the raw material hoppers 22 can be adjusted by providing elongated holes and fastening bolts on the hopper base 21 to accommodate sheets of different specifications.

[0028] The raw material hopper 22 includes a side plate 221 with a long, rectangular through-hole. The length of the rectangular through-hole is adapted to the height of the raw material hopper 22, facilitating the lifting and lowering of the lifting component 24 and allowing operators to observe the remaining sheet material inside. A plasma air bar 222 is installed at an angle of 30°-45° on the top of the side plate 221, which enables the ion air to act evenly on the sheet surface, effectively eliminating static electricity on the sheet surface and preventing the sheet from sticking together due to static electricity. A side limiting plate 223 is symmetrically arranged on one side of the side plate 221. The side limiting plate 223 cooperates with the guide rail on the side plate 221 through a slider to realize the adjustable spacing. The spacing between adjacent side limiting plates 223 can be adjusted according to the width of the sheet. A front limiting plate 224 is arranged directly opposite the side plate 221, which can be moved closer to or away from it. The front limiting plate 224 is driven by a cylinder to realize the limiting of the length direction of the sheet. The side limiting plate 223 and the front limiting plate 224 cooperate to ensure that the sheet is neatly stacked in the raw material hopper 22.

[0029] A symmetrically arranged, rollable brush assembly 23 is mounted on the top of the raw material silo 22. The brush assembly 23 includes a brush bracket 231 detachably mounted on the raw material silo 22. The brush bracket 231 is connected to the top of the raw material silo 22 by bolts for easy disassembly and maintenance. A brush motor 232 is fixedly mounted on the brush bracket 231. The brush motor 232 is a stepper motor, capable of precise speed control. A brush 233 is detachably mounted on the output end of the brush motor 232 via a coupling. The brush 233 is made of flexible nylon and extends to the inside of the raw material silo 22 on one side, contacting the surface of the sheet. The brush motor 232 drives the brush 233 to rotate, combing the sheet and separating any adhered sheets.

[0030] A lifting component 24 is vertically mounted inside the raw material hopper 22. The lifting component 24 includes a vertically mounted lifting module 241, which employs a ball screw linear module for high lifting accuracy and stability. Lifting arms 242, made of stainless steel, are arrayed at the output end of the lifting module 241, extending into the inner side of the raw material hopper 22. There are four evenly distributed lifting arms 242 to ensure stable support for the sheet material. The lifting module 241 drives the lifting arms 242 to move up and down, ensuring the sheet material at the top of the raw material hopper 22 is always at a convenient gripping height.

[0031] A material handling robot 25 is movably mounted on the top of the raw material silo 22. The robot 25 includes a horizontally placed rodless cylinder 251, which is fixedly mounted on a bracket on the top of the raw material silo 22. Its stroke can be adjusted according to the distance between the raw material silo 22 and the receiving mechanism 26. A lifting cylinder 252 is installed at the output end of the rodless cylinder 251. The lifting cylinder 252 is a double-acting cylinder with rapid response. A suction cup bracket 253 is installed at the output end of the lifting cylinder 252. Six suction cups 254 are arrayed on the suction cup bracket 253, making full contact with the sheet surface and gripping the sheet through negative pressure adsorption.

[0032] A receiving mechanism 26 is set on one side of the raw material warehouse 22 near the six-axis industrial robot 1. The receiving mechanism 26 includes a receiving platform and a positioning cylinder. The positioning cylinder drives the positioning block to position the sheet material, ensuring that the six-axis industrial robot 1 can accurately grasp the sheet material.

[0033] A label feeding device 3 is positioned directly in front of the six-axis industrial robot 1 to separate labels one by one. The label feeding device 3 employs a vacuum suction-type label separation mechanism, capable of separating rolls of labels one by one and conveying them to a designated location. A first detection component 4 is positioned between the six-axis industrial robot 1 and the label feeding device 3. The first detection component 4 is a vision detection component with an image path from bottom to top, including an industrial camera, lens, ring light source, and image processor. The industrial camera is a 2-megapixel CCD camera with a 16mm focal length lens, and the ring light source is a white LED light source. It can capture and detect the sheets and labels gripped by the six-axis industrial robot 1 from below, determining whether the gripping position of the sheets and labels is accurate.

[0034] On the other side of the six-axis industrial robot 1, there is a feeding conveyor device 5 for transportation. The feeding conveyor device 5 includes a negative pressure conveyor belt 51 with a negative pressure chamber. The conveyor belt 51 is made of breathable material. The negative pressure chamber is connected to a vacuum pump through a pipe. The vacuum degree of the vacuum pump can be adjusted according to the weight of the sheet to ensure that the sheet is tightly adsorbed on the conveyor belt. Near the end of the negative pressure conveyor belt 51, there is a material collection tray 52. ​​The material collection tray 52 is made of stainless steel and can temporarily store the sheet in case of equipment failure to prevent sheet accumulation.

[0035] A roller pressing mechanism 53 is reciprocating vertically on the negative pressure conveyor belt 51. The roller pressing mechanism 53 includes a roller pressing seat 531, which is fixedly mounted on the support of the negative pressure conveyor belt 51. A pressing cylinder 532 is provided on one side of the roller pressing seat 531, and a roller 533 is movably provided on the other side. The roller 533 is made of rubber and has a diameter of 50mm. The pressing cylinder 532 can drive the roller 533 to move vertically. A spring 534 is provided between adjacent pressing cylinders 532 and rollers 533. The elastic coefficient of the spring 534 is 5N / mm, which can play a buffering role and ensure that the roller 533 applies uniform pressure to the sheet, pressing the label tightly onto the sheet.

[0036] The output end of the feeding conveyor 5 is equipped with a feeding device 6, which includes a feeding conveyor belt assembly 61. The feeding conveyor belt assembly 61 uses a belt conveyor, and the conveying speed can be adjusted according to production efficiency. A lateral moving component is installed on the feeding conveyor belt assembly 61. The lateral moving component is a linear module driven by a servo motor, which has high running precision. A crossbeam 62 is movably installed on the adjacent lateral moving component. The crossbeam 62 is made of aluminum alloy, which is lightweight and has high strength. A feeding lifting cylinder 63 is installed in the center of the crossbeam 62. A feeding suction cup 64 is movably inserted on the crossbeam 62. The feeding suction cup 64 is connected to a negative pressure system. The feeding lifting cylinder 63 drives the feeding suction cup 64 to rise and fall, realizing the gripping and placement of the sheet. The lateral moving component drives the crossbeam 62 to move, placing the sheet at the designated position on the feeding conveyor belt assembly 61.

[0037] A second detection component 7 is installed above the feeding conveyor 5. The second detection component 7 is a vision detection component. The shooting light route is from top to bottom and includes an industrial camera, lens, bar light source and image processor. The industrial camera is a 5-megapixel CMOS camera with a lens focal length of 25mm. The bar light source is a blue LED light source. It can shoot and detect the sheet after labeling to determine whether the labeling position is offset or whether there are defects such as missing labels.

[0038] A third detection component 8 is set directly above the output end of the label feeding device 3. The third detection component 8 is a vision detection component with a shooting light route from top to bottom. Its structure is the same as that of the second detection component 7. It can shoot and detect the labels after they are separated from the label feeding device 3 to determine whether the labels are intact or have missing corners or other problems.

[0039] The working process of this utility model is as follows: First, the sheet material is stacked in the raw material silo 22. The sheet material is limited by adjusting the position of the side limiting plate 223 and the front limiting plate 224. The lifting module 241 of the lifting component 24 drives the lifting arm 242 to rise, lifting the sheet material upward so that the top sheet material is close to the roller brush component 23. The roller brush motor 232 drives the roller brush 233 to rotate, combing the sheet material. At the same time, the plasma air bar 222 generates ion air to eliminate static electricity on the surface of the sheet material and prevent the sheet material from sticking together. The rodless cylinder 251 of the raw material handling robot 25 drives the suction cup bracket 253 to move above the sheet material. The lifting cylinder 252 drives the suction cup 254 to descend. The suction cup 254 grabs the sheet material by negative pressure adsorption. Then, the rodless cylinder 251 and the lifting cylinder 252 work together to transport the sheet material to the receiving platform of the receiving mechanism 26. The positioning cylinder drives the positioning block to position the sheet material.

[0040] The negative pressure suction plate 9 at the end of the six-axis industrial robot 1 grips the sheet material on the receiving mechanism 26, and then moves to the label feeding device 3 to grip the label after it has been separated by the label feeding device 3. During the gripping process, the third detection component 8 detects the separated label, and the first detection component 4 detects the position of the sheet material and label gripped by the six-axis industrial robot 1. If the detection fails, the equipment issues an alarm and stops running, and the operator handles the situation. If the detection passes, the six-axis industrial robot 1 accurately affixes the label to the sheet material and places the labeled sheet material on the negative pressure conveyor belt 51 of the feeding conveyor device 5.

[0041] The negative pressure conveyor belt 51 uses negative pressure to adsorb and fix the sheet, and drives the sheet forward. The pressing cylinder 532 of the roller pressing mechanism 53 drives the roller 533 to descend and roll the labeled sheet to ensure that the label is tightly attached to the sheet. When the sheet is transported to the second detection component 7, the second detection component 7 detects the labeling quality. If the detection fails, the equipment will remove the unqualified product to the designated area. If the detection passes, the sheet continues to be transported to the end of the feeding conveyor 5.

[0042] The lateral moving component of the feeding device 6 drives the crossbeam 62 to move above the sheet, and the feeding lifting cylinder 63 drives the feeding suction cup 64 to descend and grab the sheet. Then the lateral moving component and the feeding lifting cylinder 63 work together to place the sheet on the feeding conveyor belt component 61. The feeding conveyor belt component 61 transports the sheet to the designated position to complete the entire labeling process.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art should be able to make equivalent embodiments by making some changes or modifications to the above-disclosed technical content without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A sheet labeling machine, comprising a six-axis industrial robot (1), characterized in that, The six-axis industrial robot (1) has a feeding device (2) on one side for gradually separating the sheet material; a label feeding device (3) for separating the labels one by one is provided in front of the six-axis industrial robot (1); a first detection component (4) is provided between the adjacent six-axis industrial robot (1) and the label feeding device (3); a feeding conveyor (5) for transportation is provided on the other side of the six-axis industrial robot (1); a discharging device (6) is provided at the output end of the feeding conveyor (5); a second detection component (7) is provided above the feeding conveyor (5); and a third detection component (8) is provided directly above the output end of the label feeding device (3).

2. The sheet labeling machine as described in claim 1, characterized in that: The feeding device (2) includes a hopper base (21); the hopper base (21) is arrayed with adjustable spacing raw material hoppers (22); the top of the raw material hoppers (22) is symmetrically provided with a rolling brush component (23); the inside of the raw material hoppers (22) is provided with a lifting component (24); the top of the raw material hoppers (22) is provided with a movable raw material handling robot (25); a receiving mechanism (26) is provided on one side of the raw material hoppers (22) near the six-axis industrial robot (1).

3. The sheet labeling machine as described in claim 2, characterized in that: The raw material silo (22) includes a side plate with a long strip through rectangular hole; a plasma air bar is installed at the top of the side plate at an angle; a side limiting plate is symmetrically provided on one side of the side plate; the distance between adjacent side limiting plates is adjustable; a front limiting plate is provided directly opposite the side plate, which can be moved closer to or away from it; The roller brush component (23) includes a roller brush bracket that is detachably mounted on the raw material silo (22); a roller brush motor is fixedly mounted on the roller brush bracket; a roller brush is detachably mounted on the output end of the roller brush motor; one side of the roller brush extends into the inside of the raw material silo (22); The lifting component (24) includes a vertically arranged lifting module; the output end of the lifting module is provided with lifting arms; the lifting arms extend to the inside of the raw material bin (22); The material handling robot (25) includes a horizontally placed rodless cylinder; the output end of the rodless cylinder is provided with a lifting cylinder; the output end of the lifting cylinder is provided with a suction cup bracket; and the suction cup bracket is arrayed with suction cups.

4. The sheet labeling machine as described in claim 1, characterized in that: The first detection component (4), the second detection component (7) and the third detection component (8) are all visual detection components; the second detection component (7) and the third detection component (8) capture light routes from top to bottom; the first detection component (4) captures light routes from bottom to top.

5. The sheet labeling machine as described in claim 1, characterized in that: The feeding and conveying device (5) includes a negative pressure conveyor belt (51) with a negative pressure chamber; the negative pressure conveyor belt (51) is provided with a material accumulation tray (52) near its end; the negative pressure conveyor belt (51) is provided with a roller pressing mechanism (53) that can reciprocate vertically.

6. The sheet labeling machine as described in claim 5, characterized in that: The roller pressing mechanism (53) includes a roller pressing seat; a pressing cylinder is provided on one side of the roller pressing seat, and a roller is movably provided on the other side; the pressing cylinder can drive the roller to move back and forth in the vertical direction; a spring is provided between adjacent pressing cylinders and rollers.

7. The sheet labeling machine as described in claim 1, characterized in that: The unloading device (6) includes an unloading conveyor belt assembly (61); a transverse moving assembly is provided on the unloading conveyor belt assembly (61); a crossbeam (62) is movably provided on the adjacent transverse moving assembly; an unloading lifting cylinder (63) is provided at the center of the crossbeam (62); an unloading suction cup (64) is movably inserted on the crossbeam (62); the unloading lifting cylinder (63) can drive the unloading suction cup (64) to move back and forth.

8. The sheet labeling machine as described in claim 1, characterized in that: The six-axis industrial robot (1) has a negative pressure suction plate with dense suction holes that can be detachably installed at its end.

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