A dust removal device for processing self-adhesive labels

Abstract

This utility model discloses a dust removal device for processing self-adhesive labels, including a device housing and a conveyor base fixed to the top of the device housing. Conveyor side plates are fixed to the top of both ends of the conveyor base, and a processing conveyor belt is arranged between the two conveyor side plates. An electrostatic dust removal adsorption box is fixedly connected to the middle section of the top of the two conveyor side plates. By adding a novel airflow leveling device above the dust removal device, this device can utilize a stable airflow from top to bottom to blow and press the self-adhesive labels conveyed on the processing conveyor belt downwards to a flat state. This avoids insufficient contact between the labels and the dust removal components of the electrostatic dust removal adsorption box and vacuum adsorption box due to bending, curling edges, or wrinkles. This solves the problem of abnormal label shape interfering with the dust removal effect from the source. It also has the advantages of auxiliary dust removal and structural adaptability, significantly improving the operational stability and cleanliness output of the entire dust removal device.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging and printing, specifically relating to a dust removal device for processing self-adhesive labels. Background Technology

[0002] Dust removal devices for self-adhesive label processing are key auxiliary equipment in the printing, die-cutting, and other processing stages of self-adhesive labels. They mainly use core technologies such as "electrostatic neutralization + vacuum adsorption" to remove dust, fibers, and other impurities generated on the surface of the label substrate due to friction and environmental adsorption. This prevents impurities from causing quality problems such as incomplete label printing patterns, reduced die-cutting accuracy, and adhesive failure, ensuring the appearance quality and performance of the labels. They are widely used in production scenarios with high cleanliness requirements, such as food packaging labels, pharmaceutical labels, and electronic labels. They are important equipment for improving the pass rate of self-adhesive label processing and reducing enterprise production costs.

[0003] However, existing dust removal devices for self-adhesive label processing often encounter incomplete dust removal during the conveyor belt transport of thin or flexible labels. Specifically, firstly, slight vibrations and airflow disturbances during conveyor belt operation, or the flexible nature of the label material itself, can cause edge curling (usually 1-3mm), central bulging, or localized wrinkles. Secondly, some labels may experience slight deformation of the substrate due to changes in humidity during storage before processing, making it difficult to maintain a flat state during transport. Existing dust removal devices, such as electrostatic adsorption chambers and vacuum adsorption chambers, require stable and sufficient contact between the label surface and the dust removal components (such as ion air outlets and vacuum adsorption ports) to effectively remove impurities. If the label has curled edges or wrinkles, impurities below the curled edges or in the crevices cannot be neutralized by electrostatics or adsorbed by vacuum, creating dust removal blind spots and reducing the label cleanliness compliance rate to below 80%. Utility Model Content

[0004] The purpose of this utility model is to provide a dust removal device for processing self-adhesive labels, so as to solve the problem that existing self-adhesive label dust removal devices mentioned in the background art are prone to incomplete dust removal when processing thin or flexible labels. One problem is that vibration of the conveyor belt, airflow disturbance or the flexibility of the label causes the edge to curl up, the middle to bulge or local wrinkles. Another problem is that the label substrate is slightly deformed due to changes in the humidity of the storage environment, making it difficult to keep it flat during transportation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust removal device for processing self-adhesive labels, comprising a device housing and a conveyor base fixed to the top of the device housing. Conveyor side plates are fixed to the top of both ends of the conveyor base. A processing conveyor belt is arranged between the two conveyor side plates. An electrostatic dust removal adsorption box is fixedly connected to the middle section of the top of the two conveyor side plates. A vacuum adsorption box is arranged behind the electrostatic dust removal adsorption box. A control box is fixed to the outer wall of the right end of the electrostatic dust removal adsorption box. The power supply wire of the control box is electrically connected to the device housing, and the electrostatic dust removal adsorption box is electrically connected to the control box. A wind straightening device is longitudinally arranged above the processing conveyor belt, the electrostatic dust removal adsorption box, and the vacuum adsorption box.

[0006] Preferably, the wind straightening device includes an air purifier, a dust collection box, a detachable end cap, and a blower box. The air purifier is fixed to the rear side of the bottom center of the device chassis by screws. An air inlet is provided at the center of the front end of the air purifier. The dust collection box is connected to the air outlet at the rear end of the air purifier. The blower box is connected to the air outlet at the rear end of the dust collection box. A detachable end cap is provided at the top of the dust collection box. The air purifier and the blower inside the blower box are electrically connected to the device chassis by wires.

[0007] Preferably, a sealing gasket is provided between the dust collection box and the detachable end cap at the top, and the dust collection box and the detachable end cap are fixedly connected by multiple screws. Multiple dust collection bags are also fixed inside the dust collection box by a sealing frame, and the airflow must pass through multiple dust collection bags during the process of air passing through the inside of the dust collection box.

[0008] Preferably, the wind straightening device further includes an air supply pipe, a connecting bend, a wind pipe, and air distribution nozzles. The air supply pipe is connected to the air outlet at the rear end of the blower box. The end of the air supply pipe away from the blower box is connected to the connecting bend, and the other opening of the connecting bend is connected to the wind pipe. The wind pipe is located longitudinally above the processing conveyor belt and the electrostatic dust removal adsorption box and the vacuum adsorption box. Multiple air distribution nozzles are provided at the bottom end of the wind pipe.

[0009] Preferably, the blower box can deliver airflow into the air delivery pipe through an internal blower, and after the airflow is delivered into the air pipe, it is blown downward in a conical range through multiple air distribution nozzles, so that the airflow acts on the outer wall of the top of the processing conveyor belt from top to bottom.

[0010] Preferably, the wind straightening device further includes L-shaped fixed brackets and fixed sleeves. Fixed sleeves are fitted and fixed to the outer side of the center of the wind tube and the outer side near the rear end. L-shaped fixed brackets are fixed to both ends of the two fixed sleeves, and multiple L-shaped fixed brackets are fixed to the outer walls of the device chassis near the top left and right ends by screws.

[0011] Preferably, a vacuum pump is fixed inside the device chassis near the rear end via a frame, and a chassis end cover A is fixed to the top of the vacuum adsorption chassis via screws. A vacuum tube connector is provided at the center of the top of the chassis end cover A, and the vacuum pump is connected to the vacuum tube connector via a vacuum connecting pipe.

[0012] Preferably, the top of the electrostatic dust removal adsorption box is fixed with a box end cover B by multiple screws, and the processing conveyor belt can uniformly transport the self-adhesive label placed at the top front end of the belt backward, and the self-adhesive label transported backward at a uniform speed passes through the electrostatic dust removal adsorption box and the vacuum adsorption box in sequence.

[0013] Preferably, the right end of the device chassis is provided with multiple convenient maintenance windows, and each of the multiple convenient maintenance windows is fixed with a convenient maintenance door by embedded screws. The four corners of the bottom of the conveying base are each vertically fixed with a mounting bracket, and the multiple mounting brackets are fixedly connected to the device chassis by welding.

[0014] Preferably, a drive roller is connected between the two conveying side plates near the front end via a bearing, and multiple driven rollers are equidistantly arranged behind the drive roller via bearings. The processing conveyor belt is sleeved on the outside of the drive roller and the multiple driven rollers. A gear is provided on the left end of the roller shaft of the drive roller. A motor is provided inside the device housing near the front end, and a gear is also provided on the left end of the output shaft of the motor. The two gears are connected by a transmission chain, and a protective cover is sleeved on the outside of the transmission chain. The protective cover is fixed to the outer wall of the left end of the device housing and the conveying side plate.

[0015] Compared with the prior art, this utility model provides a dust removal device for self-adhesive label processing, which has the following beneficial effects:

[0016] This invention adds a novel airflow leveling device above the dust removal unit. This device utilizes a stable downward airflow to press the self-adhesive labels conveyed on the processing conveyor belt downwards to a flat state. This prevents insufficient contact between the labels and the dust removal components of the electrostatic adsorption chamber and vacuum adsorption chamber due to bending, curling, or wrinkles. It addresses the interference of abnormal label shape on dust removal efficiency at the source. Simultaneously, it offers advantages in auxiliary dust removal and structural adaptability, significantly improving the operational stability and cleanliness output of the entire dust removal unit. The airflow leveling device delivers airflow through a blower box to the air supply pipe, which is then introduced into the air duct via a connecting bend. Multiple uniform airflow nozzles then blow the airflow downwards in a conical pattern, ensuring that the airflow acts evenly on the processing conveyor belt. The self-adhesive label surface with a top edge forms a stable downward pressure. Its core advantage lies in addressing the issues of edge curling, central bulging, or localized wrinkling that self-adhesive labels (especially film-based substrates) are prone to during transport due to uneven tension and changes in environmental humidity. The airflow can tightly press the label onto the conveyor belt surface, ensuring that the label surface can completely adhere to the electrostatic elimination components when entering the electrostatic dust removal adsorption chamber. When entering the vacuum adsorption chamber, no impurity adsorption areas are missed. For example, when the label edge curls by 1-2mm, the airflow from the uniform air nozzle can flatten the curled edge, preventing impurities below the curled edge from failing to be neutralized by electrostatics or adsorbed by vacuum, thereby improving the dust removal coverage and ensuring the uniformity and thoroughness of the dust removal effect.

[0017] The device is equipped with an air purifier and a dust collection box, forming an airflow purification and impurity filtration system. The air purifier first performs preliminary filtration on the incoming outside air to remove dust, fibers, and other impurities. Then, the airflow enters the dust collection box and undergoes secondary filtration through multiple dust bags inside, further purifying the airflow. The key function of this design is to ensure that the airflow blown out by the uniform air nozzle is itself in a clean state. On the one hand, it prevents external air impurities from adhering to the label surface with the airflow, causing secondary pollution. On the other hand, when the clean airflow blows the label, it can also blow away some light floating dust (such as dust particles with a diameter of 1-3μm) from the label surface, which plays a role in pre-treatment dust removal, reducing the load on subsequent electrostatic dust removal and vacuum dust removal, extending the maintenance cycle of the electrostatic elimination components, and reducing the clogging frequency of the vacuum adsorption filter.

[0018] Furthermore, the air duct of the device is fixed to the top of the device chassis by a fixing sleeve and an L-shaped fixing bracket. The screw connection between the bracket and the chassis ensures that the air duct does not shake during airflow transportation, avoiding uneven force on the labels due to airflow direction deviation. At the same time, the air duct is located longitudinally above the processing conveyor belt and the two large dust removal boxes, without obstructing the label transportation path or interfering with the conveyor belt or dust removal components. It is compatible with the operation process of the original dust removal device and does not require modification of the main body of the equipment. Attached Figure Description

[0019] Figure 1This is a right-side perspective three-dimensional structural diagram of a dust removal device for processing self-adhesive labels according to this utility model.

[0020] Figure 2 This is a right-side plan view of a dust removal device for processing self-adhesive labels according to this utility model.

[0021] Figure 3 This is a top view schematic diagram of the dust removal device for processing self-adhesive labels according to this utility model.

[0022] Figure 4 This is a schematic diagram of the overall three-dimensional structure of the wind-powered straightening device of this utility model.

[0023] In the diagram: 1. Mounting bracket; 2. Conveying side plate; 3. Easy maintenance door; 4. Device chassis; 5. Electrostatic dust removal and adsorption chassis; 6. Control box; 7. Vacuum adsorption chassis; 8. Vacuum connecting pipe; 9. Chassis end cover A; 10. Chassis end cover B; 11. Air straightening device; 12. Air purifier; 13. Dust collection box; 14. Removable end cover; 15. Blower box; 16. Air supply pipe; 17. Connecting bend; 18. L-shaped fixed bracket; 19. Air duct; 20. Fixing sleeve; 21. Air distribution nozzle. 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] This utility model provides, for example Figure 1-4This invention relates to a dust removal device for self-adhesive label processing. The device's core design logic focuses on stable conveying, precise dust removal, and auxiliary leveling. Through modular structure and multi-technology collaboration, it achieves efficient dust removal during self-adhesive label processing. The core support of the device is the device housing 4, with a conveyor base fixed to its top. The four corner supports 1 of the conveyor base are vertically fixed to the housing 4 via welding. This welding method provides high strength, ensuring the conveyor base does not shift during long-term operation and providing a stable foundation for subsequent label conveying. Simultaneously, the right side of the housing 4 has multiple maintenance windows with convenient access doors 3 (fixed by embedded screws). The advantage of this design is that when internal components such as the motor and vacuum pump malfunction, it is not necessary to disassemble the entire housing; only the maintenance doors need to be removed for quick repair, significantly shortening maintenance time and reducing operational difficulty. Conveyor side plates 2 are fixed to the top of the left and right ends of the conveyor base. A processing conveyor belt is installed between the side plates. The side plates are connected to the drive roller near the front end via bearings. Multiple driven drive rollers are equidistantly arranged behind the driving drive roller. The processing conveyor belt is sleeved around the outside of the driving drive roller and the driven drive rollers. A gear is installed at the left end of the shaft of the driving drive roller, and a gear is also installed at the left end of the motor output shaft inside the front end of the device housing 4. The two gears are driven by a transmission chain, and a protective cover is sleeved on the outside of the chain (fixed to the outer wall of the left end of the device housing 4 and the conveyor side plate 2). After the motor is powered on, the output shaft drives its own gear to rotate, which drives the gear of the driving drive roller to rotate synchronously through the transmission chain, thereby causing the driving drive roller to rotate. The friction between the conveyor belt and the roller body is utilized. The conveyor belt and driven rollers are driven to move, so that the self-adhesive labels placed at the top front end of the conveyor belt are conveyed backward at a uniform speed. The equidistant arrangement of the driven rollers can support the surface of the conveyor belt and prevent the conveyor belt from sagging due to the weight of the labels or airflow pressure. The protective cover can prevent dust and debris from being rolled into the chain, reduce wear on transmission components, and extend service life. The uniform speed transmission driven by the motor (the speed can be adjusted by the control box 6, usually 0.5-2m / min) can ensure that the labels are in full contact with the subsequent dust removal components and avoid incomplete dust removal due to uneven conveying speed.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the labels conveyed by the processing conveyor belt pass sequentially through the electrostatic dust removal adsorption box 5 (located at the top middle section of the conveyor side plate 2, fixed with screws) and the vacuum adsorption box 7 (located behind the electrostatic dust removal adsorption box 5). Both remove impurities through the dual action of electrostatic neutralization and vacuum adsorption. The top of the box is secured with multiple screws to the end cover B10 (for easy opening and maintenance of internal components). The control box 6 is fixed to the right outer wall. The control box 6 is electrically connected to the device box 4 and the electrostatic dust removal adsorption box 5 via wires. The control box 6 can adjust the electrostatic dust removal intensity to adapt to the electrostatic characteristics of different label materials (such as paper labels and film labels), especially self-adhesive labels (especially film labels). During processing and transportation, static electricity is easily generated due to friction. Static electricity can attract dust and fibrous impurities in the air. The electrostatic dust removal adsorption box 5 integrates an ion bar or static eliminator. When powered on, it generates positive and negative ions, which are blown onto the surface of the label during transportation through the air outlet to neutralize the static charge carried by the label. At the same time, the electrostatic adsorption plate (with weak static electricity) inside the box will adsorb impurities that have lost their static adhesion, preventing impurities from floating and adhering to the label again. It can specifically solve the core pain point of static adsorption of impurities, and is especially suitable for scenarios where static electricity is easily generated, such as electronic labels and film labels. It can remove impurities with a diameter ≥10μm, laying the foundation for subsequent vacuum dust removal.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the top of the chassis is fixed with screws to the end cover A9. A vacuum tube connector is located at the center of the top of the end cover. The vacuum pump, which is fixed to the frame near the rear of the chassis 4, is connected to the connector via a vacuum connecting pipe 8. After the vacuum pump is powered on, a negative pressure environment is created inside the vacuum adsorption chassis 7 through the vacuum connecting pipe 8 (the negative pressure value can be adjusted by the control box 6, usually -0.05 to -0.08 MPa). When the labels that have undergone electrostatic dust removal enter the bottom of the chassis, the adsorption port at the bottom of the chassis will generate suction, sucking the tiny impurities (such as 5-10μm dust particles) remaining on the label surface into the chassis. The impurities then enter the dust collection tank (which needs to be cleaned regularly) of the vacuum pump through the pipe. The physical method of negative pressure adsorption does not require contact with the label surface, avoiding scratches on the label. Compared with single electrostatic dust removal, vacuum adsorption can remove smaller particles of impurities, improving the label cleanliness to over 98%, meeting the high cleanliness requirements of food and pharmaceutical labels. The detachable design of the end cover A9 facilitates cleaning of the adsorbed impurities inside and prevents blockage of the adsorption port.

[0028] like Figure 1 and Figure 4As shown, to prevent labels from bending or curling and affecting the dust removal effect, a wind straightening device 11 is installed longitudinally above the processing conveyor belt and the two large dust removal boxes. The device includes an air purifier 12 (fixed to the rear side of the bottom center of the device box 4 with screws, and an air inlet at the front), a dust collection box 13 (connected to the rear air outlet of the air purifier 12, with a detachable end cap 14 at the top, and a sealing gasket between the end cap and the box body, fixed with screws), and a blower box 15 (connected to the rear air outlet of the dust collection box 13). The system includes an air supply pipe 16 (connected to the rear air outlet of the blower box 15), a connecting bend pipe 17 (connected to the other end of the air supply pipe 16), a wind power pipe 19 (connected to the other opening of the bend pipe 17, located longitudinally above the conveyor belt and the dust collector box), and multiple air distribution nozzles 21 (located at the bottom of the wind power pipe 19). The wind power pipe 19 is fixed to the L-shaped fixed bracket 18 (fixed to the outer walls of the top left and right ends of the device box 4 by screws) through a fixing sleeve 20 (fitted on the center of the wind power pipe 19 and near the rear end).

[0029] like Figure 1 and Figure 4 As shown, after the air purifier 12 is powered on, it draws in outside air through the front air inlet, filtering out large particulate impurities (such as dust and fibers). The purified air enters the dust collection box 13, where it undergoes secondary filtration through multiple dust collection bags (fixed by a sealing frame, ensuring airflow passes through the dust collection bags) to remove tiny impurities with a diameter ≥5μm, ensuring clean airflow. The sealing gasket prevents unfiltered air from entering through the end cover gaps, guaranteeing filtration effectiveness. After the blower inside the blower box 15 is powered on, it draws in and pressurizes the clean air output from the dust collection box 13, and delivers it to the air duct 19 through the air supply pipe 16 and connecting bend 17. After the airflow is evenly distributed within the air duct 19, it is blown downwards in a conical shape through multiple air distribution nozzles 21 (the conical angle is usually 30°-60°), acting from top to bottom on the label surface at the top of the processing conveyor belt, forming... Stable downward pressure flattens bent and curled labels. While flattening the labels, the clean airflow also blows away some light dust (such as 1-3μm dust) from the label surface, serving as a pre-treatment dust removal function and reducing the load on subsequent electrostatic and vacuum dust removal. The uniform distribution of the conical airflow ensures consistent force on the label surface, preventing local curled edges from not being flattened. The airflow intensity can be adjusted via the control box 6 to adapt to labels of different thicknesses (such as 20-200μm), preventing labels from shifting due to excessive airflow or failing to flatten due to insufficient airflow. The combination of the L-shaped fixing bracket 18 and the fixing sleeve 20 can fix the air duct 19, preventing the air duct 19 from shaking during airflow. The detachable end cap 14 facilitates regular replacement or cleaning of the dust bag without disassembling the entire device. The independent control of the air purifier 12 and the blower can be started and stopped according to operational needs, saving energy.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust removal device for processing self-adhesive labels, comprising a device housing (4) and a conveyor base fixed to the top of the device housing (4), wherein conveyor side plates (2) are fixed to the top of both ends of the conveyor base, a processing conveyor belt is provided between the two conveyor side plates (2), an electrostatic dust removal adsorption box (5) is fixedly connected to the middle section of the top of the two conveyor side plates (2), a vacuum adsorption box (7) is provided on the rear side of the electrostatic dust removal adsorption box (5), a control box (6) is fixed to the outer wall of the right end of the electrostatic dust removal adsorption box (5), the power supply wire of the control box (6) is electrically connected to the device housing (4), and the electrostatic dust removal adsorption box (5) is electrically connected to the control box (6), characterized in that: A wind straightening device (11) is longitudinally arranged above the processing conveyor belt, the electrostatic dust removal adsorption box (5), and the vacuum adsorption box (7); The wind straightening device (11) includes an air purifier (12), a dust collection box (13), a detachable end cap (14), and a blower box (15). The air purifier (12) is fixed to the rear side of the bottom center of the device housing (4) by screws. An air inlet is provided at the center of the front end of the air purifier (12). The air outlet of the air purifier (12) is connected to the dust collection box (13). The air outlet of the dust collection box (13) is connected to the blower box (15). A detachable end cap (14) is provided at the top of the dust collection box (13). The blowers inside the air purifier (12) and the blower box (15) are electrically connected to the device housing (4) by wires.

2. The dust removal device for processing self-adhesive labels according to claim 1, characterized in that: A sealing gasket is provided between the dust collection box (13) and the detachable end cap (14) at the top, and the dust collection box (13) and the detachable end cap (14) are fixedly connected by multiple screws. Multiple dust collection bags are also fixed inside the dust collection box (13) by a sealing frame, and the airflow must pass through multiple dust collection bags during the process of airflow through the inside of the dust collection box (13).

3. The dust removal device for processing self-adhesive labels according to claim 2, characterized in that: The wind straightening device (11) also includes an air supply pipe (16), a connecting bend (17), a wind pipe (19), and a uniform air nozzle (21). The air supply pipe (16) is connected to the air outlet at the rear end of the blower box (15). The end of the air supply pipe (16) away from the blower box (15) is connected to the connecting bend (17), and the other opening of the connecting bend (17) is connected to the wind pipe (19). The wind pipe (19) is located longitudinally above the processing conveyor belt, the electrostatic dust removal adsorption box (5), and the vacuum adsorption box (7). Multiple uniform air nozzles (21) are provided at the bottom end of the wind pipe (19).

4. The dust removal device for processing self-adhesive labels according to claim 3, characterized in that: The blower box (15) can deliver blower airflow into the air delivery pipe (16) through the internal blower, and after the blower airflow is delivered into the air pipe (19), it is blown out downward in a cone shape through multiple air distribution nozzles (21), and the airflow acts on the outer wall of the top of the processing conveyor belt from top to bottom.

5. A dust removal device for processing self-adhesive labels according to claim 4, characterized in that: The wind straightening device (11) also includes an L-shaped fixed bracket (18) and a fixed sleeve (20). The fixed sleeve (20) is fitted and fixed at the outer side of the center of the wind pipe (19) and near the rear end. The two fixed sleeves (20) are fixed with L-shaped fixed brackets (18) at both ends. The multiple L-shaped fixed brackets (18) are fixed to the outer walls of the device housing (4) near the top left and right ends by screws.

6. The dust removal device for processing self-adhesive labels according to claim 1, characterized in that: The device housing (4) has a vacuum pump fixed inside the rear end via a frame. The top of the vacuum adsorption housing (7) has a housing end cover A (9) fixed with screws. A vacuum tube connector is provided at the center of the top of the housing end cover A (9), and the vacuum pump and the vacuum tube connector are connected via a vacuum connecting pipe (8).

7. A dust removal device for processing self-adhesive labels according to claim 6, characterized in that: The top of the electrostatic dust removal adsorption box (5) is fixed with a box end cover B (10) by multiple screws. The processing conveyor belt can transport the self-adhesive label placed at the top front end of the belt backward at a uniform speed. The self-adhesive label transported backward at a uniform speed passes through the electrostatic dust removal adsorption box (5) and the vacuum adsorption box (7) in sequence.

8. A dust removal device for processing self-adhesive labels according to claim 7, characterized in that: The device housing (4) is also provided with multiple convenient maintenance windows inside the right end, and each of the multiple convenient maintenance windows is fixed with a convenient maintenance door (3) by an embedded screw. The four corners of the bottom of the conveying base are each vertically fixed with a mounting bracket (1), and the multiple mounting brackets (1) are all fixedly connected to the device housing (4) by welding.

9. A dust removal device for processing self-adhesive labels according to claim 8, characterized in that: Two conveying side plates (2) are connected by a bearing to a drive roller near the front end. Multiple driven rollers are equidistantly arranged on the rear side of the drive roller by bearings. The processing conveyor belt is sleeved on the outside of the drive roller and the multiple driven rollers. A gear is provided on the left end of the roller shaft of the drive roller. A motor is provided inside the device housing (4) near the front end. A gear is also provided on the left end of the output shaft of the motor. The two gears are connected by a transmission chain. A protective cover is sleeved on the outside of the transmission chain. The protective cover is fixed on the left outer wall of the device housing (4) and the conveying side plate (2).

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