Dust removal device for printing equipment

Abstract

The utility model discloses a dust removal device for printing equipment, and relates to the technical field of dust removal devices. The dust collector is connected to the bottom of the machine box, a first notch is formed in the upper side of the machine box, a conveyor corresponding to the first notch is arranged, a first supporting plate is arranged on one side of the machine box, two first motors are arranged on the upper side of the first supporting plate, output shafts of the first motors are fixedly connected with screw rods, and sweeping assemblies are in threaded fit with the two screw rods. The sweeping assembly comprises a connecting plate and two screw cylinders, and the two ends of the connecting plate are arranged on the peripheral sides of the two screw cylinders correspondingly. The supporting rod is in sliding fit with the connecting plate, the supporting rod conveniently ascends and descends to drive the brush plate and the dust removal piece to synchronously ascend and descend, the screw barrel is in threaded fit with the peripheral side of the screw, the first motor conveniently works to drive the screw barrel to slide and move, and therefore the connecting plate and the dust removal piece can move out of the machine box; and the convenience of replacing the dust removal piece is improved.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal devices, specifically, it relates to a dust removal device for printing equipment. Background Technology

[0002] A dust removal device for printing equipment is a device specifically designed to remove dust, impurities, and dust adhering to the surface of printing materials generated during the printing process.

[0003] Chinese Patent No. CN217755531U discloses a dust removal device for printing equipment, including: a limiting structure comprising a threaded rod and a limiting block, the threaded rod being threadedly connected to the housing, the limiting block being rotatably connected to the bottom end of the threaded rod, and the lower surface of the limiting block being in contact with the upper surface of the mounting base.

[0004] The dust removal device for printing equipment disclosed in this application requires the threaded rod to be rotated to press the limiting block against the mounting base when replacing the antistatic brush. Therefore, the screw rods on both sides of the dust removal device need to be rotated during the disassembly and installation of the antistatic brush, making the operation process cumbersome and time-consuming. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a dust removal device for printing equipment, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A dust removal device for printing equipment includes: a chassis and a vacuum cleaner. The vacuum cleaner is connected to the bottom of the chassis. The upper side of the chassis has a slot and a conveyor corresponding to the slot. A support plate is installed on one side of the chassis. Two motors are installed on the upper side of the support plate. The output shaft of the motors is fixedly connected to a screw. One end of the screw extends into the chassis. The two screws are threaded with a cleaning component. The cleaning component is located below the conveyor.

[0008] The cleaning assembly includes a connecting plate and two screw barrels. The two ends of the connecting plate are respectively installed on the periphery of the two screw barrels. The screw barrels are threadedly engaged with the periphery of the corresponding screws. Support rods are slidably fitted on both ends of the connecting plate. The support rods penetrate the connecting plate vertically. The two screw barrels are located between the two support rods. Brush plates are installed on the upper end faces of the two support rods. Multiple dust removal components are snapped onto the brush plates. Rolling components are provided on the lower end faces of the support rods. A pushing component corresponding to the rolling components is installed on one side of the inner wall of the machine housing.

[0009] Optionally, the dust removal component includes a T-shaped strip, with multiple T-shaped grooves and multiple rectangular grooves on the upper side of the brush plate. The T-shaped grooves penetrate one side of the brush plate, and the rectangular grooves penetrate vertically through the brush plate. The rectangular grooves are located between two adjacent T-shaped grooves. The T-shaped strip is snapped into the T-shaped groove. A push plate is installed on the upper side of the T-shaped strip. The push plate is located on the upper side of the brush plate, and several brush bristles are installed on the upper side of the push plate. The brush bristles are located on the lower side of the conveyor.

[0010] Optionally, the rolling element includes a square plate mounted on the lower end face of the support rod, two fixed plates mounted on the lower side of the square plate, a crossbar mounted between the two fixed plates, and rollers rotating around the crossbar.

[0011] Optionally, the pushing assembly includes a support plate two installed on one side of the inner wall of the chassis, an electric push rod one installed on the upper side of the support plate two, an output shaft of the electric push rod one fixedly connected to a trapezoidal inclined block, and a roller located on the upper side of the trapezoidal inclined block.

[0012] Optionally, a slot 2 is provided on the side of the chassis away from the motor 1. The slot 2 is connected to the inner cavity of the chassis. Support plates 3 are installed on both sides of the chassis. Electric push rods 2 are installed on the upper side of the support plates 3. The output shafts of the two electric push rods 2 are fixedly connected to the door. The slot 2 is located between the screw and the door.

[0013] Optionally, the chassis has two support legs on the bottom, with the vacuum cleaner located between the two support legs.

[0014] Optionally, the lower side of the chassis is provided with a dust collection port and a corresponding material collection hopper. A suction pipe is provided under the material collection hopper, and a vacuum cleaner is connected to the lower side of the suction pipe.

[0015] Optionally, the conveyor includes two vertical plates mounted on the upper side of the chassis, with two rollers rotating between the two vertical plates. A printing conveyor belt is fitted around the two rollers. Two motors are mounted on one side of one of the vertical plates. The output shafts of the two motors are fixedly connected to support columns. The support columns pass through the two vertical plates laterally, and the two rollers are respectively mounted around the corresponding support columns.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] The support rod slides onto the connecting plate, facilitating the synchronous lifting and lowering of the support rod, which in turn drives the brush plate and dust collector to move up and down. The screw barrel is threaded onto the circumference of the screw, allowing the motor to drive the screw barrel to slide and move, thus enabling the connecting plate and dust collector to be moved outside the casing, improving the convenience of replacing the dust collector. By pushing the component to extend, the rolling element is squeezed, causing the support rod to move upward, thus bringing the dust collector into contact with the lower side of the conveyor, facilitating the dust collector to clean the dust from the conveyor during operation. When the pushing component retracts, the dust collector moves downward, canceling contact with the conveyor, thereby reducing the resistance when the dust collector slides out of the casing.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] In the picture:

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure;

[0023] Figure 3 This is a schematic diagram of the cleaning component structure.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Chassis; 2. Vertical plate; 3. Vacuum cleaner; 4. Support plate one; 5. Support plate two; 6. Electric push rod one; 7. Motor one; 8. Screw; 9. Support plate three; 10. Electric push rod two; 11. Trapezoidal inclined block; 12. Box door; 13. Support rod; 14. Screw barrel; 15. Connecting plate; 16. Brush plate; 17. Brush bristles; 18. Printing conveyor belt; 19. T-shaped strip; 20. Push plate; 21. Square plate; 22. Fixing plate; 23. Roller.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] 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.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] A dust removal device for printing equipment is a device specifically designed to remove dust, impurities, and dust adhering to the surface of printing materials generated during the printing process.

[0030] From the perspective of working principle, it can be divided into the following types:

[0031] Brush dust removal equipment: Dust on the surface of printed materials is swept off by the rotation or reciprocating motion of brushes. For example, a brush roller is installed at the feed inlet of a roll-to-roll printing press. When the paper passes through the brush roller, the brushes come into contact with the paper surface, and the dust is brushed off by the friction of the brushes.

[0032] Scraper dust removal equipment: This type of equipment uses the relative movement of a scraper against the surface of the printing material to remove dust. The scraper of this equipment is generally made of a soft material to avoid scratching the printing material.

[0033] Air-blowing dust removal equipment: Compressed air generated by a fan is blown onto the surface of the printing material through nozzles, causing dust to detach from the material. For example, an air-blowing device is installed on the paper transport path of a sheet-fed printing press to blow up the dust on the paper, while a dust collection device collects the dust to prevent it from falling back onto the paper.

[0034] Vacuum-type dust collection equipment: This type of equipment uses the negative pressure generated by a vacuum pump to suck dust into a collection container through a suction port. It typically includes a filtration system to prevent dust from being expelled again. In printing workshops, vacuum-type dust collection equipment can effectively collect ink dust and other pollutants generated during the printing process.

[0035] Ion wind dust removal equipment: This equipment contains an ion generator that produces a large number of positive and negative ions, charging dust particles. The charged dust particles are then blown off the printing material surface by the ion wind and collected by a dust extraction device. This type of equipment is very effective at removing dust attracted by electrostatic forces.

[0036] In terms of installation location, printing press dust removal equipment can be installed at the inlet of the printing press to pre-remove dust from the materials entering the printing press; it can also be installed near the printing unit to promptly remove dust generated during the printing process; or it can be installed at the outlet of the printing press to perform final dust removal on the printed products.

[0037] The quality of printed materials places extremely high demands on visual appeal. If the printing material is dusty, dust particles will hinder the proper transfer of ink during the printing process. For example, in offset printing, dust may prevent proper contact between the printing plate and the blanket, leading to uneven ink transfer and resulting in blurred images, missing strokes, or broken lines in text. In gravure and flexographic printing, dust can also affect ink adhesion to the printing material, producing defects such as ink spots and white spots, thereby reducing the clarity and color reproduction of the printed product.

[0038] For high-precision printed materials, such as banknote printing and anti-counterfeiting label printing, even tiny dust particles can cause serious quality problems. These printed materials often have strict requirements for pattern and color accuracy, and dust removal devices can effectively remove dust that may affect quality, ensuring high-quality output.

[0039] Extending the lifespan of printing equipment: Dust entering the interior of printing equipment can cause wear and tear on mechanical parts. For example, in the transmission system of a printing press, dust particles act like fine abrasives, accelerating the wear of gears, chains, and other components. If dust enters the printing unit of the printing press, it may affect the rotational accuracy of the rollers and shorten their lifespan.

[0040] For inkjet printing equipment, dust can clog the printhead. The printhead is a critical component of an inkjet printer; once clogged, it can lead to uneven ink spraying and even damage the printhead. By installing a dust removal system, the chance of dust entering the equipment can be reduced, thereby extending the equipment's lifespan and lowering maintenance and replacement costs.

[0041] Improving production efficiency: When there is a lot of dust on the surface of the printing material, printing quality problems may occur frequently, requiring machine shutdown for inspection and handling. For example, if a large number of printing defects caused by dust occur during the printing process, workers need to stop printing, clean the dust, or replace the printing material, which wastes a lot of time. Installing a dust removal device can reduce the occurrence of such situations, allowing the printing press to operate continuously and stably, thereby improving production efficiency.

[0042] Improving the working environment and employee health: Dust generated during the printing process, if it permeates the workplace, will reduce the air quality. This dust may contain paper fibers, ink particles, and other components, and long-term inhalation can harm the respiratory system and health of operators. Dust collection devices can effectively collect and remove dust, reducing its concentration in the air and providing operators with a healthier and more comfortable working environment.

[0043] Excellent dust removal effect: It has a good ability to remove dust and impurities from the surface of printed materials. Whether it is paper, plastic film or other common printing substrates, the brush can remove dust adhering to the surface through physical contact. For example, in the production of paper printed products, paper may be contaminated with fiber scraps, dust particles, etc. during transportation. The brush can effectively remove these impurities and ensure printing quality.

[0044] Wide applicability: It can adapt to various types of printing materials. Different printing materials have different surface characteristics, such as the roughness of paper and the smoothness of films. The brush-type dust removal device can flexibly adjust parameters such as the material, hardness, and density of the brushes according to the different materials. Smooth-surfaced papers like coated paper and textured papers like corrugated paper can both be cleaned using the brush-type dust removal device.

[0045] Simple structure: The main components are brush rollers or brush plates, and the overall structure is not complex. This makes it easy to install and disassemble, and easy to place on various printing equipment. For example, brush-type dust removal devices can be easily installed on small digital printing presses or large web printing presses without requiring large-scale modifications to the printing equipment structure.

[0046] Lower cost: Compared to some high-tech dust removal devices, such as ultrasonic dust removal devices or ion wind dust removal devices, brush dust removal devices are much less expensive. The main cost lies in the manufacture and replacement of the brushes, and the raw materials for the brushes are relatively inexpensive, making it an economical dust removal option when budget is limited.

[0047] Easy to maintain: Routine maintenance mainly involves checking the wear and tear of the brush bristles and cleaning them. When the brush bristles wear down to a certain extent, simply replace them. Cleaning the brush bristles is also quite simple; you can use clean water or a suitable detergent to wash them, then let them air dry before continuing to use them. No complicated repairs by professional technicians are required.

[0048] Please see Figure 1-3As shown, this embodiment provides a dust removal device for printing equipment, including: a housing 1 and a vacuum cleaner 3. The vacuum cleaner 3 is connected to the bottom of the housing 1. The upper side of the housing 1 is provided with a slot and a conveyor corresponding to the slot. A support plate 4 is installed on one side of the housing 1. Two motors 7 are installed on the upper side of the support plate 4. The output shaft of the motor 7 is fixedly connected to a screw 8. One end of the screw 8 passes through the housing 1. A cleaning component is threaded on the two screws 8. The cleaning component is located on the lower side of the conveyor.

[0049] The cleaning assembly includes a connecting plate 15 and two screw barrels 14. The two ends of the connecting plate 15 are respectively installed on the periphery of the two screw barrels 14. The screw barrels 14 are threadedly engaged with the periphery of the corresponding screws 8. Both ends of the connecting plate 15 are slidably fitted with support rods 13. The support rods 13 vertically penetrate the connecting plate 15. The two screw barrels 14 are located between the two support rods 13. The upper end face of the two support rods 13 is equipped with a brush plate 16. Multiple dust removal components are snapped onto the brush plate 16. The lower end face of the support rods 13 is provided with a rolling element. A pushing component corresponding to the rolling element is installed on one side of the inner wall of the housing 1.

[0050] One application of this embodiment is as follows: When the dust collector needs to be replaced, the control push assembly retracts towards motor 7, causing the push assembly to release its support for the rolling element. This allows the support rod 13 to move downwards under gravity. The downward movement of the support rod 13 causes the brush plate 16 and the dust collector to move downwards synchronously. The dust collector is no longer in contact with the conveyor, and at this time, the brush plate 16 falls on the upper side of the connecting plate 15. Simultaneously, motor 7 is started, driving the screw 8 to rotate. The rotation of the screw 8 drives the screw barrel 14 to move away from motor 7. The movement of the screw barrel 14 causes the connecting plate 15 and the support rod 13 to move synchronously. The movement of the support rod 13 causes the brush plate 16 and the dust collector to move synchronously. When the brush plate 16 moves to the outside of the housing 1, the dust collector is horizontally pulled out from one side of the brush plate 16, and then a new dust collector is inserted into the brush plate 16, thus completing the replacement of the dust collector. Similarly, the brush plate 16 can be reset by referring to the above operation. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0051] The support rod 13 slides on the connecting plate 15, facilitating the lifting and lowering of the support rod 13 to drive the brush plate 16 and the dust collector to lift and lower synchronously. The screw barrel 14 is threaded around the screw 8, facilitating the operation of the motor 7 to drive the screw barrel 14 to slide and move, thereby allowing the connecting plate 15 and the dust collector to move outside the housing 1, improving the convenience of replacing the dust collector. By pushing the component to extend, the rolling element is squeezed to move the support rod 13 upward, thereby allowing the dust collector to contact the lower side of the conveyor, facilitating the dust collector to clean the dust on the conveyor during operation. When the pushing component retracts, the dust collector moves downward and cancels contact with the conveyor, thereby reducing the resistance when the dust collector slides out of the housing 1.

[0052] like Figure 2 , 3 As shown, the dust removal component in this embodiment includes a T-shaped strip 19. The brush plate 16 has multiple T-shaped grooves and multiple rectangular grooves on its upper side. The T-shaped grooves penetrate one side of the brush plate 16, and the rectangular grooves penetrate vertically through the brush plate 16. The rectangular grooves are located between two adjacent T-shaped grooves. The T-shaped strip 19 is snapped into the T-shaped groove. A push plate 20 is installed on the upper side of the T-shaped strip 19. The push plate 20 is located on the upper side of the brush plate 16. A number of brush bristles 17 are installed on the upper side of the push plate 20. The brush bristles 17 are located on the lower side of the conveyor 18. The rectangular grooves facilitate dust to pass through the brush plate 16 and fall into the bottom of the housing 1. The T-shaped strip 19 cooperates with the T-shaped groove, making it easy to pull the T-shaped strip 19 out of the T-shaped groove or insert it into the T-shaped groove, thereby improving the convenience of replacing the brush bristles 17.

[0053] like Figure 2 , 3 As shown, the rolling element in this embodiment includes a square plate 21 mounted on the lower end face of the support rod 13. Two fixing plates 22 are mounted on the lower side of the square plate 21, and a crossbar is mounted between the two fixing plates 22. A roller 23 is rotatably fitted around the crossbar. The square plate 21, the fixing plates 22 and the crossbar cooperate to support the roller 23. The roller 23 reduces the friction between the pushing component and the support rod 13 when the component extends or retracts.

[0054] like Figure 2 As shown, the pushing assembly in this embodiment includes a support plate 2 5 installed on one side of the inner wall of the housing 1. An electric push rod 1 6 is installed on the upper side of the support plate 2 5. A trapezoidal inclined block 11 is fixedly connected to the output shaft of the electric push rod 1 6. The trapezoidal inclined block 11 is slidably fitted on the upper side of the support plate 2 5. The roller 23 is located on the upper side of the trapezoidal inclined block 11. By extending the electric push rod 1 6, the trapezoidal inclined block 11 is pushed to slide, so that the trapezoidal inclined block 11 presses the roller 23 upward, thereby pushing the brush plate 16 and brush bristles 17 to move upward, so that the brush bristles 17 contact the lower side of the conveyor. By retracting the electric push rod 1 6, the trapezoidal inclined block 11 is driven to slide, so that the trapezoidal inclined block 11 releases the pressure on the roller 23, so that the brush plate 16 and brush bristles 17 move downward under the action of gravity, thereby moving the brush bristles 17 away from the conveyor. The support plate 2 5 facilitates the support of the electric push rod 1 6.

[0055] like Figure 2As shown, in this embodiment, the chassis 1 has a slot 2 on the side away from the motor 7. The slot 2 is connected to the inner cavity of the chassis 1. Support plates 3 9 are installed on both sides of the chassis 1. Electric push rods 2 10 are installed on the upper side of the support plates 3 9. The output shafts of the two electric push rods 2 10 are fixedly connected to the door 12. The slot 2 is located between the screw 8 and the door 12. The slot 2 facilitates the movement of the brush plate 16 and the brush bristles 17 to the outside of the chassis 1, thereby facilitating the replacement of the brush bristles 17. The door 12 reduces the probability of dust drifting out of the chassis 1 from the slot 2. The extension of the electric push rods 2 10 facilitates pushing the door 12 away from the chassis 1, thereby allowing the brush bristles 17 to be moved between the door 12 and the slot 2 for replacement. The support plates 3 9 facilitate the support of the electric push rods 2 10.

[0056] like Figure 1 As shown, the chassis 1 in this embodiment is provided with two support legs on the lower side, and the vacuum cleaner 3 is located between the two support legs. The support legs facilitate the support of the chassis 1, improve the stability of the device during use, and reduce the probability of the vacuum cleaner 3 contacting the ground.

[0057] like Figure 2 As shown, the chassis 1 in this embodiment is provided with a dust collection port and a corresponding material collection hopper on the lower side. A suction pipe is provided on the lower side of the material collection hopper, and a vacuum cleaner 3 is connected to the lower side of the suction pipe. The dust collection port and the material collection hopper cooperate to facilitate the dust swept off by the brush bristles 17 to slide into the suction pipe. The suction pipe and the vacuum cleaner 3 cooperate to facilitate the collection of dust in the chassis 1 into the vacuum cleaner 3.

[0058] like Figure 2 As shown, the conveyor in this embodiment includes two vertical plates 2 mounted on the upper side of the housing 1. Two rollers are rotatably coupled between the two vertical plates 2. A printing conveyor belt 18 is sleeved around the two rollers. The lower part of the printing conveyor belt 18 is located in the slot 1. Two motors 2 are mounted on one side of one of the vertical plates 2. The output shaft of the motors 2 is fixedly connected to a support column. The support column passes through the two vertical plates 2 laterally. The two rollers are respectively mounted around the corresponding support columns. The vertical plates 2 and the support columns cooperate to facilitate the support of the rollers and the printing conveyor belt 18, thereby improving the stability of the device during use. Starting the motors 2 facilitates the rotation of the rollers and the printing conveyor belt 18.

[0059] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A dust removing device for a printing apparatus, characterized by comprising: Include: The cabinet (1) and the dust collector (3) are connected at the bottom of the cabinet (1), the upper side of the cabinet (1) is provided with a notch, a conveyor corresponding to the notch is provided, a support plate (4) is arranged on one side of the cabinet (1), two motor (7) are arranged on the upper side of the support plate (4), the output shaft of the motor (7) is fixedly connected with a screw rod (8), and the two screw rods (8) are threadedly connected with a cleaning assembly; The cleaning assembly comprises a connecting plate (15) and two screw cylinders (14), the connecting plate (15) is arranged on the circumferential side of the two screw cylinders (14), the screw cylinder (14) is threadedly connected on the circumferential side of the corresponding screw rod (8), the connecting plate (15) is slidably connected with a support rod (13) at both ends, the upper end surface of the two support rods (13) is provided with a brush plate (16), a plurality of dust removal parts are connected to the brush plate (16), and a rolling part is arranged on the lower end surface of the support rod (13). A pushing assembly is arranged on one side of the inner wall of the cabinet (1) corresponding to the rolling part.

2. The dust removing device for a printing apparatus according to claim 1, wherein The dust removal part comprises a T-shaped strip (19), the upper side of the brush plate (16) is provided with a plurality of T-shaped grooves and a plurality of rectangular grooves, the T-shaped strip (19) is connected in the T-shaped groove, the upper side of the T-shaped strip (19) is provided with a push plate (20), and a plurality of bristles (17) are arranged on the upper side of the push plate (20).

3. The dust removing device for a printing apparatus according to claim 1, wherein The rolling part comprises a square plate (21) arranged on the lower end surface of the support rod (13), two fixed plates (22) are arranged on the lower side of the square plate (21), a horizontal rod is arranged between the two fixed plates (22), and a rolling wheel (23) is rotatably connected to the circumferential side of the horizontal rod.

4. The dust removing device for a printing apparatus according to claim 1, wherein The pushing assembly comprises a support plate (5) arranged on one side of the inner wall of the cabinet (1), and a motor (6) is arranged on the upper side of the support plate (5). The output shaft of the electric push rod (6) is fixedly connected with a trapezoidal inclined block (11).

5. The dust removing device for a printing apparatus according to claim 1, wherein The cabinet (1) is provided with a notch on the side away from the motor (7), and the cabinet (1) is provided with a support plate (9) on both sides. The upper side of the support plate (9) is provided with an electric push rod (10), and the output shaft of the two electric push rods (10) is fixedly connected with a cabinet door (12).

6. The dust removing device for a printing apparatus according to claim 1, wherein The lower side of the cabinet (1) is provided with two supporting legs.

7. The dust removing device for a printing apparatus according to claim 1, wherein The lower side of the cabinet (1) is provided with a dust collecting port and a material collecting hopper corresponding to the dust collecting port, and the lower side of the material collecting hopper is provided with a dust collecting pipe.

8. The dust removing device for a printing apparatus according to claim 1, wherein The conveyor comprises two vertical plates (2) arranged on the upper side of the cabinet (1), two rollers rotatably connected between the two vertical plates (2), a printing conveyor belt (18) sleeved on the circumferential side of the two rollers, and two motors (2) arranged on one side of one of the vertical plates (2). The output shaft of the motor is fixedly connected with a support column, and the two rollers are arranged on the circumferential side of the corresponding support column.

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