Material cleaning device and laser cutting system

Abstract

The application discloses a kind of material cleaning device and laser cutting system, including hollow pipe, hollow pipe has first tube cavity, hollow pipe is equipped with material cleaning port, material cleaning port is arranged in the lateral wall of hollow pipe and is communicated with first tube cavity;And material cleaning component, material cleaning component includes first rotating shaft, material cleaning piece and driving part, first rotating shaft is rotatably arranged in first tube cavity and is coaxially arranged with hollow pipe, material cleaning piece is arranged on first rotating shaft and corresponds with the position of material cleaning port, part of material cleaning piece can be cleaned by material cleaning port and be operated, driving part is fixedly connected with hollow pipe and is used to drive first rotating shaft rotation.Driving part drives first rotating shaft to rotate, first rotating shaft rotates and drives material cleaning piece to rotate, in the process of rotation, part of material cleaning piece can be cleaned by material cleaning port and waste residue on belt, to realize the operation of waste residue on belt in laser cutting and be cleaned, avoid waste residue or waste material to cause damage to workpiece etc..

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting and cleaning, in particular to a cleaning device and a laser cutting system. BACKGROUND

[0002] Laser, English full name: Light Amplification by Stimulated Emission of Radiation, its meaning is "through the stimulated emission of light expansion", laser is a major invention of mankind since the twentieth century, after nuclear energy, computers and semiconductors, and is known as "the fastest knife", "the most accurate ruler" and "the brightest light". Laser cutting refers to the use of focused high-power density laser beam to irradiate workpiece, so that the irradiated material is rapidly melted, vaporized, ablated or reaches the ignition point, at the same time, with the help of high-speed airflow coaxial with the light beam to blow off the molten material, so as to realize the function of cutting the workpiece. Laser cutting as a precision machining method can be used for cutting almost all materials, including two-dimensional cutting or three-dimensional cutting of thin metal plate.

[0003] Laser cutting machine is a cutting machine made of laser cutting principle, that is, laser cutting machine can emit laser from laser, through optical system, and further focus into high-power density laser beam, and use laser beam to cut workpiece. In the process of cutting machining of laser cutting machine, conveying device (such as belt) is usually used to convey workpiece to realize automatic assembly line machining. However, if the waste and dust generated by machining adhere to the conveying device during conveying, it will not only cause scratch, dust pollution and other consequences to the workpiece (including machined workpiece and unprocessed workpiece) conveyed by the conveying device, but also easily damage the conveying device. SUMMARY

[0004] Therefore, it is necessary to provide a cleaning device and a laser cutting system; the cleaning device can be used for cleaning the waste on the conveying device in laser cutting to avoid damage to the workpiece and the conveying device; the laser cutting system uses the aforementioned cleaning device to clean the waste on the conveying device.

[0005] The technical scheme is as follows:

[0006] On the one hand, one embodiment provides a cleaning device, comprising:

[0007] A hollow pipe having a first pipe cavity, the hollow pipe is provided with a cleaning port, the cleaning port is arranged on the side wall of the hollow pipe and communicates with the first pipe cavity; and

[0008] The cleaning assembly comprises a first rotating shaft, a cleaning piece and a driving piece. The first rotating shaft is arranged in the first lumen coaxially with the hollow tube. The cleaning piece is arranged on the first rotating shaft and corresponds to the position of the cleaning opening. A part of the cleaning piece can be used for cleaning operation through the cleaning opening. The driving piece is fixedly connected with the hollow tube and is used for driving the first rotating shaft to rotate.

[0009] The driving piece drives the first rotating shaft to rotate, and the first rotating shaft drives the cleaning piece to rotate. During the rotation of the cleaning piece, a part of the cleaning piece can clean the waste on the belt through the cleaning opening, so that the waste on the belt in the laser cutting process is cleaned, and damage to the workpiece caused by the waste or the waste material is avoided.

[0010] The technical solutions are further described as follows:

[0011] In one embodiment, the cleaning opening is formed in the upper end of the hollow tube with a preset depth, and a part of the cleaning piece can extend out of the cleaning opening for cleaning operation.

[0012] In one embodiment, a plurality of cleaning pieces are arranged along the length direction of the first rotating shaft.

[0013] In one embodiment, a plurality of cleaning pieces are arranged along the length direction of the first rotating shaft.

[0014] In one embodiment, a plurality of cleaning pieces are arranged along the length direction of the first rotating shaft.

[0015] In one embodiment, the cleaning device further comprises an air extraction assembly, the air extraction assembly comprising a fan and an air extraction pipeline. The fan is used to form a negative pressure airflow in the air extraction pipeline. The air extraction cavity of the air extraction pipeline is communicated with the first lumen.

[0016] In one embodiment, the first rotating shaft is provided with a second lumen. The second lumen is formed along the length direction of the first rotating shaft. One end of the second lumen is communicated with the air extraction cavity or the first lumen. The first rotating shaft is further provided with a material falling hole. The material falling hole is formed in the side wall of the first rotating shaft and is communicated with the second lumen.

[0017] The material falling hole is provided with at least two and is formed around the outer periphery of the first rotating shaft.

[0018] In one of the embodiments, the second tube cavity is further provided with a blocking member, which is arranged in the second tube cavity and used for blocking the second tube cavity, and the material dropping hole is located between the blocking member and the air duct.

[0019] In one of the embodiments, the material cleaning device further comprises a support base, the hollow tube is fixed on the support base, the first rotating shaft is arranged on the support base through a support bearing and coaxially arranged with the hollow tube, the material dropping hole, the second tube cavity and the air duct form a first material discharging channel, a ventilation gap is formed between the outer wall of the first rotating shaft and the inner wall of the hollow tube, and the support base is further provided with a ventilation opening, the ventilation gap, the ventilation opening and the air duct form a second material discharging channel.

[0020] In another aspect, another embodiment further provides a laser cutting system comprising the material cleaning device according to any one of the above technical solutions.

[0021] The laser cutting system comprises the above-mentioned material cleaning device, and has the material cleaning function in laser cutting. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated herein for explanation by reference. These drawings are not intended to limit the present application, and are provided merely to explain the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the material cleaning device in the embodiment.

[0025] Figure 2 It is a schematic diagram of the overall structure of the material cleaning device in the embodiment. Figure 1 It is a schematic diagram of the structure of the first rotating shaft in the embodiment.

[0026] Figure 3 It is a schematic diagram of the cooperation between the material cleaning device and the conveying device in the embodiment.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 100, cleaning device; 110, hollow tube; 111, cleaning port; 112, first lumen; 121, first rotating shaft; 1211, second lumen; 1212, material falling hole; 122, cleaning piece; 123, driving piece; 124, blocking piece; 131, fan; 132, air duct; 133, air suction cavity; 140, support base; 141, ventilation port; 142, support bearing; 200, conveying device. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below with reference to the drawings:

[0030] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the scope of the present application. Those skilled in the art can make similar modifications without departing from the scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0033] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0036] Please refer to Figures 1 to 3 One embodiment provides a material cleaning device 100, which comprises a hollow tube 110 and a material cleaning assembly. The hollow tube 110 is fixedly arranged, and the hollow tube 110 is provided with an opening in the direction of the belt, i.e. a material cleaning port 111. The material cleaning assembly can rotate in the hollow tube 110 to clean the belt by the material cleaning port 111, and make the waste material fall into the hollow tube 110 through the material cleaning port 111.

[0037] Specifically:

[0038] The hollow tube 110 has a first lumen 112, and the hollow tube 110 is provided with a material cleaning port 111, which is arranged on the side wall of the hollow tube 110 and communicates with the first lumen 112.

[0039] The first lumen 112 is the inner cavity of the hollow tube 110, and the hollow tube 110 is fixedly arranged, for example, Figure 1 The material cleaning port 111 is arranged upwardly,Figure 3 In particular, the upper part of the clean material port 111 is a conveying belt, so that the reverse side of the conveying belt is cleaned by the clean material assembly, and the cleaned waste residue and the like can fall into the hollow pipe 110.

[0040] The clean material assembly comprises a first rotating shaft 121, a clean material piece 122 and a driving piece 123. The first rotating shaft 121 is arranged in the first lumen 112 and coaxially arranged with the hollow pipe 110. The clean material piece 122 is arranged on the first rotating shaft 121 and corresponds to the position of the clean material port 111. A part of the clean material piece 122 can perform a clean material operation through the clean material port 111. The driving piece 123 is fixedly connected with the hollow pipe 110 and used to drive the first rotating shaft 121 to rotate.

[0041] The first rotating shaft 121 is arranged in the hollow pipe 110 and can rotate in the hollow pipe 110 to drive the clean material piece 122 on it to perform a clean material operation on the conveying belt. The axis of the first rotating shaft 121 is coaxially arranged with the axis of the hollow pipe 110.

[0042] The driving piece 123 can be a motor, which is an electromagnetic device for realizing the conversion or transmission of electric energy according to the electromagnetic induction law. Its main function is to generate a driving torque, which is used as a power source for electrical devices or various machines, and usually converts electric energy into mechanical energy. In this embodiment, the driving piece 123 can be a servo motor, a stepper motor or a direct current motor to output rotary power. The driving piece 123 and the first rotating shaft 121 are in transmission connection to transmit the rotary power to the first rotating shaft 121, so as to drive the first rotating shaft 121 to rotate.

[0043] When the cleaning device works, the driving piece 123 drives the first rotating shaft 121 to rotate, and the first rotating shaft 121 rotates and drives the clean material piece 122 to rotate. In the process of rotation, a part of the clean material piece 122 can clean the waste residue on the belt through the clean material port 111, so as to realize the cleaning operation of the waste residue on the belt in the laser cutting process and avoid the damage of the waste residue or waste material to the workpiece.

[0044] In one embodiment, please refer to Figure 1 The clean material port 111 is arranged at the upper end of the hollow pipe 110 with a preset depth, and a part of the clean material piece 122 can extend out of the clean material port 111 to perform a clean material operation.

[0045] The cleaning material 122 will not interfere with the inner wall of the hollow pipe 110 during the rotation of the first rotating shaft 121, and the end of the cleaning material 122 can extend out of the cleaning material port 111 but not beyond the radius range of the hollow pipe 110, that is, the length of the cleaning material 122 is less than the radius of the hollow pipe 110. Therefore, when the first rotating shaft 121 rotates, part of the cleaning material 122 can extend out of the cleaning material port 111 to clean the conveying belt located at the cleaning material port 111, and the first rotating shaft 121 continues to rotate and the conveying belt continues to convey, thereby realizing the cleaning operation of the belt.

[0046] In one embodiment, referring to Figure 1 , the cleaning material 122 is provided in multiple, and the multiple cleaning materials 122 are arranged in intervals along the length direction of the first rotating shaft 121.

[0047] The cleaning material 122 can be a brush, and the length of the brush is less than the radius of the hollow pipe 110, and at the same time, the length of the brush is sufficient to make the end of the brush extend out of the cleaning material port 111. In this way, the outer end of the brush can extend out of the cleaning material port 111 to clean the conveying belt during the rotation of the first rotating shaft 121, and at the same time, the brush will not interfere with the inner wall of the hollow pipe 110 during the rotation.

[0048] The brush is arranged in multiple intervals along the length direction of the first rotating shaft 121, thereby increasing the width of the brush cleaning and improving the cleaning efficiency, and at the same time, the cleaning degree is also improved, making the cleaning more thorough.

[0049] In one embodiment, referring to Figure 1 , the cleaning material 122 is provided in multiple, and the multiple cleaning materials 122 are arranged in intervals and arranged around the outer periphery of the first rotating shaft 121 to form a surrounding structure, and the surrounding structure is provided in at least two and arranged in intervals along the length direction of the first rotating shaft 121.

[0050] In one embodiment, the cleaning material 122 is provided in multiple, and the multiple cleaning materials 122 are arranged in intervals along the length direction of the first rotating shaft 121 to form a spiral structure.

[0051] The surrounding structure and the spiral structure are both arrangement modes of the cleaning material 122, and in the specific arrangement, the person skilled in the art can arrange according to the actual needs, such as setting the width of the cleaning material 122 arranged along the length direction of the first rotating shaft 121 to correspond to the width of the cleaning material port 111, the specification size of the cleaning material 122, etc. to complete the specific structural arrangement, which will not be described here.

[0052] In one embodiment, referring to Figure 1The cleaning device 100 further comprises an air suction assembly, which comprises a fan 131 and an air suction duct 132, the fan 131 being configured to form a negative pressure airflow in the air suction duct 132, and an air suction cavity 133 of the air suction duct 132 being in communication with the first lumen 112.

[0053] The air suction assembly is configured to provide a negative pressure airflow, and the air suction duct 132 is in communication with the first lumen 112 of the hollow tube 110, so as to timely suck away the waste dropped into the hollow tube 110.

[0054] The fan 131 is a device capable of providing wind power, and the fan 131 is capable of increasing the pressure of gas and discharging the gas by relying on the input mechanical energy, so as to form a flowing airflow and form wind power. In a specific arrangement, a fan 131 of a corresponding specification can be selected according to the required wind power of the waste and the waste suction, so as to provide a sufficient negative pressure airflow to suck away the waste dropped into the hollow tube 110.

[0055] In one embodiment, please refer to Figure 1 and Figure 2 The first rotating shaft 121 is provided with a second lumen 1211, the second lumen 1211 being formed along the length direction of the first rotating shaft 121, one end of the second lumen 1211 being in communication with the air suction cavity 133 or the first lumen 112, and the first rotating shaft 121 is further provided with a material dropping hole 1212, the material dropping hole 1212 being formed in the side wall of the first rotating shaft 121 and being in communication with the second lumen 1211.

[0056] As shown in Figure 2 , the first rotating shaft 121 is provided in a tubular shape, so that the first rotating shaft 121 is formed with the second lumen 1211, and the side of the second lumen 1211 is provided with the material dropping hole 1212, the material dropping hole 1212 being a through hole, so that the material dropping hole 1212 can communicate the second lumen 1211 and the first lumen 112.

[0057] When the cleaning member 122 rotates under the driving action of the first rotating shaft 121, the waste carried or adhered to the reverse side of the conveying belt is cleaned, and the cleaned waste falls into the first lumen 112 of the hollow tube 110 through the cleaning port 111. At this time, on the one hand, the waste can pass through the first lumen 112 and enter the ventilation duct through the air suction cavity 133, so as to be taken away by the negative pressure airflow in the air suction duct 132; on the other hand, the waste can also pass through the first lumen 112 and enter the second lumen 1211 through the material dropping hole 1212, and then enter the air suction cavity 133 through the second lumen 1211, so as to be taken away by the negative pressure airflow in the air suction duct 132.

[0058] In one embodiment, the material dropping hole 1212 is provided with at least two and is formed around the outer periphery of the first rotating shaft 121.

[0059] In the process of rotating the first rotating shaft 121, the waste can enter the second lumen 1211 of the first rotating shaft 121 through the material dropping hole 1212, and then further enter the air suction cavity 133 of the air suction duct 132 and be taken away by the negative pressure airflow.

[0060] In an embodiment, referring to Figure 1 and Figure 2 , the second lumen 1211 is further provided with a blocking member 124, which is arranged in the second lumen 1211 and used for blocking the second lumen 1211, and the material dropping hole 1212 is located between the blocking member 124 and the air suction duct 132.

[0061] In order to make the waste residue enter the air suction cavity 133 of the air suction duct 132 only from one end of the second lumen 1211, the blocking member 124 is arranged in the second lumen 1211 to block the second lumen 1211. After being blocked, only a part of the second lumen 1211 is communicated with the air suction cavity 133 of the air suction duct 132, and the material dropping hole 1212 is arranged at the position of the part of the second lumen 1211 communicated with the air suction cavity 133 of the air suction duct 132, so that the waste residue enters the second lumen 1211 through the material dropping hole 1212 and then enters the air suction cavity 133 of the air suction duct 132 through the second lumen 1211 to be further taken away by the negative pressure airflow.

[0062] The blocking member 124 can be a circular member corresponding to the inner cavity of the second lumen 1211, such as a circular block, to achieve better blocking effect.

[0063] In an embodiment, referring to Figure 1 , the material cleaning device 100 further comprises a support seat 140, the hollow pipe 110 is fixed on the support seat 140, the first rotating shaft 121 is arranged on the support seat 140 in a rotating manner through a support bearing 142 and is coaxially arranged with the hollow pipe 110, the material dropping hole 1212, the second lumen 1211 and the air suction cavity 133 form a first material outlet channel, a ventilation gap is formed between the outer wall of the first rotating shaft 121 and the inner wall of the hollow pipe 110, the support seat 140 is further provided with a ventilation opening 141, and the ventilation gap, the ventilation opening 141 and the air suction cavity 133 form a second material outlet channel.

[0064] The support base 140 can be a structure capable of supporting and fixing the hollow pipe 110. The first rotating shaft 121 is rotatably installed on the support base 140 through the support bearing 142. The two ends of the first rotating shaft 121 are respectively provided with support bearings 142 for support and installation, so that the first rotating shaft 121 can rotate on the support base 140. The driving member 123 can also be fixed on the support base 140, of course, it can also be fixed on other matched structures, but the output shaft of the driving member 123 can be in transmission connection with the first rotating shaft 121, for example, a shaft coupling can be arranged to achieve the transmission connection, of course, a speed reducer or the like can also be arranged according to actual needs to further adapt the rotating speed.

[0065] The strong negative pressure airflow formed by the fan 131 in the exhaust duct 132 enables the waste residue to be smoothly discharged through the first discharge channel and the second discharge channel.

[0066] The embodiment also provides a laser cutting system comprising the material cleaning device 100 according to any one of the preceding embodiments.

[0067] The laser cutting system comprises the material cleaning device 100 described above, and has the material cleaning function in laser cutting.

[0068] As shown in Figure 3 The laser cutting system comprises a rack, a cutting device, a conveying device 200 and the material cleaning device 100.

[0069] The rack provides installation and support for each part of the laser cutting system. The cutting device and the conveying device 200 are both arranged on the rack. The cutting device is movable and can emit a cutting laser beam. The conveying device 200 can convey a material belt to be cut. The material belt is conveyed below the cutting device, so that the cutting laser beam can perform cutting processing. In the process of cutting, waste materials such as scraps are generated, which are attached to the conveying belt of the conveying device 200. The material cleaning device 100 is arranged on the rack and located below the conveying device 200. When the reverse side of the conveying belt passes through the material cleaning device 100, the material cleaning member 122 contacts the reverse side of the conveying belt through the material cleaning port 111 under the driving action of the first rotating shaft 121. The material cleaning member 122, such as the end of a brush, rubs against the reverse side of the conveying belt, so that the waste residue attached to the conveying belt is cleaned. The cleaned waste residue falls into the first lumen 112 of the hollow pipe 110 and the second lumen 1211 of the first rotating shaft 121, and is sucked away by the negative pressure airflow in the exhaust cavity 133 of the exhaust duct 132.

[0070] Any combination of the technical features of the above-described embodiments can be made. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present disclosure.

[0071] The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A clearing device, characterized in that The cleaning device comprises: a hollow tube having a first lumen, the hollow tube being provided with a cleaning port arranged in a side wall of the hollow tube and communicating with the first lumen; a cleaning assembly comprising a first rotating shaft, a cleaning member and a driving member, the first rotating shaft being rotatably arranged in the first lumen and coaxially arranged with the hollow tube, the cleaning member being arranged on the first rotating shaft and corresponding to the position of the cleaning port, a part of the cleaning member being capable of performing a cleaning operation through the cleaning port, the driving member being fixedly connected with the hollow tube and used for driving the first rotating shaft to rotate; and an air extraction assembly comprising a fan and an air extraction duct, the fan being used for forming a negative pressure air flow in the air extraction duct, an air extraction cavity of the air extraction duct communicating with the first lumen; wherein the first rotating shaft is provided with a second lumen, the second lumen being arranged along the length direction of the first rotating shaft, one end of the second lumen communicating with the air extraction cavity or the first lumen, the first rotating shaft being further provided with a material dropping hole, the material dropping hole being arranged in a side wall of the first rotating shaft and communicating with the second lumen, the material dropping hole being arranged at least two and surrounding the outer periphery of the first rotating shaft; the cleaning port being arranged at a preset depth in the upper end of the hollow tube, a part of the cleaning member being capable of extending out of the cleaning port to perform a cleaning operation, the cleaning member being arranged multiple, the multiple cleaning members being arranged in intervals along the length direction of the first rotating shaft.

2. The clearing device of claim 1, wherein the cleaning member being arranged multiple, the multiple cleaning members being arranged in intervals and surrounding the outer periphery of the first rotating shaft to form a surrounding structure, the surrounding structure being arranged at least two and arranged in intervals along the length direction of the first rotating shaft.

3. The clearing device of claim 1, wherein, the cleaning member being arranged multiple, the multiple cleaning members being arranged in intervals and surrounding the outer periphery of the first rotating shaft to form a surrounding structure, the surrounding structure being arranged at least two and arranged in intervals along the length direction of the first rotating shaft.

4. The clearing device of claim 1, wherein, the second lumen being further provided with a blocking member, the blocking member being arranged in the second lumen and used for blocking the second lumen, the material dropping hole being located between the blocking member and the air extraction duct.

5. A clearing device according to claim 4, wherein the cleaning device further comprising a support seat, the hollow tube being fixed on the support seat, the first rotating shaft being rotatably arranged on the support seat through a support bearing and coaxially arranged with the hollow tube, the material dropping hole, the second lumen and the air extraction cavity forming a first discharging channel, a ventilation gap being formed between the outer wall of the first rotating shaft and the inner wall of the hollow tube, the support seat being further provided with a ventilation port, the ventilation gap, the ventilation port and the air extraction cavity forming a second discharging channel.

6. A laser cutting system characterized by, The cleaning device comprises any one of claims 1-5.

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