Blowing roller, dust removal device and method

Abstract

This application relates to a blowing roller, a dust removal device and a method, belonging to the technical field of dust removal. This application provides a blowing roller, comprising: a roller body, on the outer peripheral surface of which a plurality of air outlets are arranged, the plurality of air outlets are arranged along the axial direction of the roller body, the air outlet direction of the air outlets is tangent to the outer peripheral surface of the roller body, and the air outlet directions of the plurality of air outlets are the same. This blowing roller has a good dust removal effect. This application also provides a dust removal device and a method, which have a good dust removal effect.

Description

Technical Field

[0001] This application relates to the technical field of dust removal, and more particularly, to a blowing roller, a dust removal device, and a method. Background Art

[0002] During the processing of products, it is necessary to remove dust and clean the surface of the products. Common dust removal methods include blowing dust removal, negative pressure dust removal, and adhesion dust removal, etc. However, the surface of some parts to be cleaned is soft, has pores, or has a coating layer, and hard dust is embedded in the surface of the parts to be cleaned and is difficult to remove. Common dust removal methods cannot effectively remove dust from such parts to be cleaned. Summary of the Invention

[0003] Therefore, this application provides a blowing roller, a dust removal device, and a method, which have a good dust removal effect.

[0004] An embodiment of the first aspect of this application provides a blowing roller, including: a roller body, on the outer peripheral surface of which a plurality of air outlets are provided, the plurality of air outlets are arranged along the axial direction of the roller body, the air outlet direction of the air outlets is tangent to the outer peripheral surface of the roller body, and the air outlet directions of the plurality of air outlets are the same.

[0005] During the rotation of the blowing roller according to the embodiment of the first aspect of this application, the air outlets are driven to move synchronously. On the one hand, during the rotation of the blowing roller, the air outlets of the blowing roller gradually approach the surface of the part to be cleaned. The air outlet direction of the air outlets changes from a direction perpendicular to the surface of the part to be cleaned to a direction parallel to the surface of the part to be cleaned. As the air outlets of the blowing roller approach the surface of the part to be cleaned, the component of the air volume perpendicular to the surface of the part to be cleaned gradually decreases. When the air outlets are closest to the surface of the part to be cleaned, the air outlet direction of the air outlets is parallel to the surface of the part to be cleaned, which can avoid embedding dust into the surface of the part to be cleaned. On the other hand, as the blowing roller rotates, when the air outlet direction of the air outlets is parallel to the surface of the part to be cleaned, the air volume of the air outlets has an initial velocity leaving the surface of the part to be cleaned while blowing air along the tangential direction of the roller body, which can lift the dust on the surface of the part to be cleaned from the product surface and drive the dust away from the surface of the part to be cleaned, having a good dust removal effect.

[0006] According to some embodiments of this application, the air outlet direction of the air outlets is inclined with respect to the central axis of the roller body.

[0007] In the above solution, when the part to be cleaned is a material tape and the central axis of the roller body extends along the width direction of the material tape, the air outlet direction of the air outlets is inclined with respect to the conveying direction of the material tape, so as to drive the dust to leave the material tape from the edge in the width direction of the material tape, having a good dust removal effect.

[0008] According to some embodiments of the present application, the blowing roller further includes: a plurality of air ducts, the air ducts spirally extend around the central axis of the roller body, one end of the air duct is an air inlet, the other end is the air outlet, and the plurality of air ducts are arranged in parallel.

[0009] In the above solution, each air outlet corresponds to an air duct, which is beneficial to the uniformity of the air volume of the air outlets. Moreover, the air duct spirally extends around the central axis of the roller body, enabling the wind direction in the air duct to spirally extend around the central axis of the roller body. The extending direction of the air duct is the same as the air outlet direction of the air duct, and the air resistance of the air duct is small, having a good noise reduction effect.

[0010] According to some embodiments of the present application, the distance between every two adjacent air ducts is the same.

[0011] In the above solution, the plurality of air ducts are evenly arranged on the roller body, which can simplify the structure of the blowing roller, facilitate the assembly and maintenance of the blowing roller, and the distance between two adjacent air outlets is also the same, enabling the blowing roller to uniformly blow air along its axial direction.

[0012] According to some embodiments of the present application, a plurality of spiral grooves are provided on the outer peripheral surface of the roller body, the spiral grooves spirally extend around the central axis of the roller body, the plurality of spiral grooves are arranged in parallel, the air ducts are air pipes, and the plurality of air pipes are correspondingly embedded in the plurality of spiral grooves.

[0013] In the above solution, the air ducts are air pipes, which simplifies the structure of the roller body and reduces the forming cost of the air ducts; the air pipes are embedded in the corresponding spiral grooves, which not only facilitates the fixed assembly of the air pipes and the roller body, but also can reduce the increase in the outer size of the blowing roller caused by the setting of the air pipes, making the blowing roller structure compact and occupying a small space.

[0014] According to some embodiments of the present application, a plurality of spiral grooves are provided on the outer peripheral surface of the roller body, the spiral grooves spirally extend around the central axis of the roller body, the plurality of spiral grooves are arranged in parallel, the blowing roller further includes a housing, the housing covers the outer peripheral surface of the roller body, and the spiral grooves and the inner wall of the housing jointly define the air ducts.

[0015] In the above solution, the spiral grooves and the inner wall of the housing jointly define the air ducts, which can reduce the number of components of the blowing roller and simplify the structure of the blowing roller.

[0016] According to some embodiments of the present application, a relief groove is provided on the outer peripheral surface of the roller body, the relief groove extends along the axial direction of the roller body, and the air outlet is provided on a side wall of the relief groove.

[0017] In the above solution, by providing an avoidance groove on the outer peripheral surface of the roller body, the air outlet path of the air outlet can be made unobstructed, and the air outlet direction of the air outlet can be extended along the tangential direction of the roller body. The air outlet is provided on one side wall of the avoidance groove. When the air outlet is provided, the outer diameter size of the roller body is not additionally increased, so that the blowing roller has a compact structure and occupies a small space.

[0018] According to some embodiments of the present application, the blowing roller further includes: an air inlet portion located at one end of the roller body, and the air inlets of each of the air ducts are communicated with the air inlet portion.

[0019] In the above solution, the air source is communicated with the air inlet portion, the air inlet portion is communicated with a plurality of air inlets, and the air source enters each air duct through the air inlet portion. The air source is provided with one joint to communicate with the air inlet portion, so that the air supply to the blowing roller can be realized, and the structure of the air source can be simplified.

[0020] According to some embodiments of the present application, the air inlet portion includes a main pipe and a plurality of branch pipes. The main pipe is used to connect the air source, the plurality of branch pipes are correspondingly arranged with the plurality of air ducts, one end of each branch pipe is connected to the main pipe, and the other end is connected to the corresponding air duct.

[0021] In the above solution, the air source enters the corresponding air duct through the main pipe and the branch pipes and blows out air from the corresponding air outlet. During the air supply process, the air source does not accumulate inside the blowing roller, and the air output of the air source is the same as the air output of the blowing roller, which can effectively reduce the dissipation of the air source during the transportation process.

[0022] An embodiment of the second aspect of the present application provides a dust removal device, including: a conveying mechanism configured to convey a workpiece to be cleaned; the blowing roller according to the embodiment of the first aspect of the present application, which is arranged downstream of the conveying mechanism and is configured to blow air onto the surface of the workpiece to be cleaned.

[0023] In the dust removal device according to the embodiment of the second aspect of the present application, the conveying mechanism conveys the workpiece to be cleaned forward, and the blowing roller blows air onto the surface of the workpiece to be cleaned.

[0024] During the rotation of the blowing roller according to the embodiment of the first aspect of the present application, on the one hand, as the air outlet of the blowing roller approaches the surface of the workpiece to be cleaned, the component of the air output perpendicular to the surface of the workpiece to be cleaned gradually becomes smaller, which can avoid blowing dust onto the surface of the workpiece to be cleaned; on the other hand, when the air outlet is far from the surface of the workpiece to be cleaned, the air output of the air outlet drives the dust to rise in a direction away from the surface of the workpiece to be cleaned, avoiding the accumulation of dust on the surface of the workpiece to be cleaned. Due to the above characteristics of the blowing roller, the dust removal device according to the embodiment of the second aspect of the present application also has a good dust removal effect.

[0025] According to some embodiments of the present application, a pair of blowing rollers are provided, and there is a gap for the workpiece to be cleaned to pass through between the pair of blowing rollers.

[0026] In the above solution, the part to be cleaned passes through the gap between a pair of blowing rollers, and each blowing roller corresponds to one side surface of the part to be cleaned, so that dust removal can be achieved on both side surfaces of the part to be cleaned simultaneously, and it has a good dust removal efficiency.

[0027] According to some embodiments of the present application, the dust removal device further includes: a suction roller, along the conveying direction of the part to be cleaned, the suction roller is located downstream of the blowing roller.

[0028] In the above solution, the suction roller is arranged downstream of the blowing roller, and the air flow blown out by the blowing roller is sucked into the suction roller, so as to take away the dust on the surface of the part to be cleaned through the air flow blown out, and it has a good dust removal effect.

[0029] The third aspect embodiment of the present application proposes a dust removal method, including:

[0030] Providing a blowing roller, the blowing roller includes a roller body, and a plurality of air outlets are arranged on the outer peripheral surface of the roller body, the plurality of air outlets are arranged along the axial direction of the roller body, the air outlet direction of the air outlet is tangent to the outer peripheral surface of the roller body, and the air outlet directions of the plurality of air outlets are the same;

[0031] Making the part to be cleaned pass through the blowing roller, and the blowing roller rotates and blows air to the surface of the part to be cleaned.

[0032] During the rotation of the blowing roller in the first aspect embodiment of the present application, on the one hand, as the air outlet of the blowing roller approaches the surface of the part to be cleaned, the component of the air volume blown out perpendicular to the surface of the part to be cleaned gradually becomes smaller, which can avoid blowing dust onto the surface of the part to be cleaned; on the other hand, when the air outlet is away from the surface of the part to be cleaned, the air volume blown out drives the dust to rise in a direction away from the surface of the part to be cleaned, avoiding dust accumulation on the surface of the part to be cleaned. Due to the characteristics of the blowing roller, the above dust removal method can effectively remove the dust on the surface of the part to be cleaned and has a good dust removal effect.

[0033] According to some embodiments of the present application, it includes: providing a pair of the blowing rollers; making the part to be cleaned pass through the gap between the pair of blowing rollers, and controlling the pair of blowing rollers to rotate in opposite directions and blow air to the surface of the part to be cleaned.

[0034] In the above solution, the part to be cleaned passes through the gap between a pair of blowing rollers, each blowing roller corresponds to one side surface of the part to be cleaned, and the pair of blowing rollers rotate in opposite directions to simultaneously perform dust removal on both side surfaces of the part to be cleaned, and blow the dust to the same side along the conveying direction of the part to be cleaned, which is convenient for the suction roller to synchronously collect the dust on both side surfaces of the part to be cleaned, and it has a good dust removal efficiency.

[0035] According to some embodiments of the present application, controlling a pair of the blowing rollers to rotate in opposite directions and blow air onto the surface of the workpiece to be cleaned includes: controlling the rotational phase difference between the two blowing rollers to be 180°, so that the two blowing rollers alternately blow air onto the surface of the workpiece to be cleaned.

[0036] In the above solution, the two blowing rollers are respectively arranged on both sides of the workpiece to be cleaned, and the two blowing rollers alternately blow air onto the surface of the workpiece to be cleaned, which can alternately apply wind pressure to both sides of the workpiece to be cleaned, thereby causing the workpiece to be cleaned to vibrate and shake off and separate the dust on the surface of the workpiece to be cleaned, having a good dust removal effect.

[0037] According to some embodiments of the present application, the blowing roller rotates and blows air onto the surface of the workpiece to be cleaned, including:

[0038] When the blowing roller rotates to move the air outlet to a side close to the surface of the workpiece to be cleaned and the air outlet direction is parallel to the surface of the workpiece to be cleaned, the air outlet starts to blow air;

[0039] When the blowing roller rotates to move the air outlet to a side away from the surface of the workpiece to be cleaned and the air outlet direction is perpendicular to the surface of the workpiece to be cleaned, the air outlet stops blowing air.

[0040] In the above solution, not only can the amount of air required by the blowing roller during the dust removal operation be reduced, reducing the dust removal cost, but also when there is a component of the air outlet air volume blowing vertically onto the surface of the workpiece to be cleaned, the air blowing onto the surface of the workpiece to be cleaned can be stopped, which can further prevent dust from being blown onto the surface of the workpiece to be cleaned.

[0041] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0043] Figure 1 and Figure 2 The structural schematic diagrams of two perspectives of the dust removal device according to some embodiments of the present application are shown;

[0044] Figure 3 The structural schematic diagram of one form of the blowing roller according to some embodiments of the present application is shown;

[0045] Figure 4 Shown is Figure 3 a schematic structural view of the roller body of the blowing roller in

[0046] Figure 5 a schematic structural view of another form of the blowing roller of some embodiments of the present application (the housing is not shown);

[0047] Figure 6 a sectional view of another form of the blowing roller of some embodiments of the present application;

[0048] Figure 7 Shown is Figure 3 a schematic sectional view of the blowing roller in

[0049] Figure 8 a working principle diagram of the first implementation form of the dust removal method of some embodiments of the present application;

[0050] Figure 9 a working principle diagram of the second implementation form of the dust removal method of some embodiments of the present application;

[0051] Figure 10 a schematic diagram showing a pair of blowing rollers rotating in opposite directions in the dust removal method of some embodiments of the present application;

[0052] Figure 11 a working principle diagram of the third implementation form of the dust removal method of some embodiments of the present application;

[0053] Figure 12 a schematic diagram showing the phase change of two blowing rollers in the dust removal method of some embodiments of the present application;

[0054] Figure 13 a working principle diagram of the fourth implementation form of the dust removal method of some embodiments of the present application;

[0055] The above-mentioned drawings are not provided to scale.

[0056] Icons: 100 - Dust removal device; 110 - Conveyor mechanism; 111 - Driving roller; 112 - Driven roller; 120 - Blowing roller assembly; 121 - Blowing roller; 121a - First blowing roller; 121b - Second blowing roller; 1211 - Roller body; 12111 - Outer peripheral surface; 12112 - First end; 12113 - Second end; 12114 - Spiral groove; 12115 - Avoidance groove; 12116 - First side wall; 12117 - Second side wall; 12118 - Through hole; 1212 - Air duct; 12121 - Air inlet; 12122 - Air outlet; 1213 - Housing; 12131 - Inner wall; 12132 - Air exhaust port; 1214 - Air inlet part; 12141 - Main pipe; 12142 - Branch pipe; 130 - Suction roller assembly; 131 - Suction roller; 200 - Part to be cleaned; 210 - First surface; 220 - Second surface; 300 - Dust; P - First preset direction; N - Second preset direction; Q - First axis; O1 - Third preset direction; O2 - Fourth preset direction. Detailed implementation manners

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0058] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0059] Referring to the "embodiments" in the present application means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0060] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "coupled", and "attached" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0061] The "plurality" mentioned in the present application means two or more (including two).

[0062] In the related art, the dust on the surface of the part to be cleaned is removed by blowing air on the surface of the part to be cleaned. However, due to factors such as the soft surface, the presence of a coating layer, or pores on the surface of some parts to be cleaned, hard dust may be embedded in the surface of the part to be cleaned, and effective dust removal cannot be achieved by ordinary blowing dust removal methods, further resulting in quality problems of the product containing such parts to be cleaned.

[0063] The inventor has found through research that during the process of blowing air on the surface of the part to be cleaned, the air outlet direction is usually fixed and unchanged, and may be perpendicular to the surface of the part to be cleaned or inclined towards the surface of the part to be cleaned. Whether it is perpendicular to the surface of the part to be cleaned or inclined towards the surface of the part to be cleaned, there will be a component perpendicular to the surface of the part to be cleaned. The surface of the part to be cleaned is adhered with dust, and the component of the air outlet airflow perpendicular to the surface of the part to be cleaned may cause the dust to be further inserted into the part to be cleaned and is not easily separated from the part to be cleaned.

[0064] Based on the above ideas, the present application provides a new technical solution. The dust on the surface of the part to be cleaned is removed by blowing air, and the air outlet direction changes periodically. During the process of blowing air on the part to be cleaned, it can not only reduce the component perpendicular to the surface of the part to be cleaned, but also drive the dust away from the surface of the part to be cleaned by the airflow, and has a good dust removal effect. The details will be specifically described below.

[0065] Figure 1 and Figure 2 The figures show structural schematic diagrams of two perspectives of the dust removal device according to some embodiments of the present application.

[0066] Such as Figure 1 and Figure 2As shown in the figure, some embodiments of the present application provide a dust removal device 100, including a conveying mechanism 110, a blowing roller assembly 120, and a suction roller assembly 130. The blowing roller assembly 120 includes a blowing roller 121, and the suction roller assembly 130 includes a suction roller 131. The conveying mechanism 110 is configured to convey a workpiece to be cleaned along a first preset direction P. The blowing roller 121 is located downstream of the conveying mechanism 110 and is configured to blow air onto the surface of the workpiece to be cleaned. The suction roller 131 is located downstream of the blowing roller 121 and is configured to provide negative pressure to guide the surrounding air flow into the suction roller 131.

[0067] It can be understood that the two side surfaces of the workpiece to be cleaned 200 along its thickness direction are respectively a first surface 210 and a second surface 220. It is possible that one of the surfaces has a coating layer, or both the first surface 210 and the second surface 220 have coating layers.

[0068] It can be understood that the first preset direction P can extend along the horizontal direction, or be inclined to the horizontal direction or extend along the vertical direction.

[0069] In some embodiments of the present application, the workpiece to be cleaned 200 is a pole piece tape, and the surface of the pole piece tape is coated with an active material layer. Metal dust may be formed during the cutting process of the pole piece tape. The active material layer is relatively soft, and the metal dust may be embedded in the active material layer. The electrode assembly formed by winding such a pole piece tape contains metal dust inside, and the battery cell may short-circuit during use, posing a serious safety hazard. In other embodiments, the workpiece to be cleaned 200 can also be other types of workpieces to be cleaned, such as a tape coated with an adhesive on the surface, a shock-absorbing tape with pores, a housing with an anti-wear layer on the surface, a product with a sponge material on the surface, etc.

[0070] The conveying mechanism 110 includes at least a pair of conveying roller assemblies. The conveying roller assembly includes a driving roller 111 and a driven roller 112 arranged oppositely. The workpiece to be cleaned 200 passes between the driving roller 111 and the driven roller 112. The driving roller 111 and the driven roller 112 jointly clamp the workpiece to be cleaned 200 and convey the workpiece to be cleaned 200 along the first preset direction P. In some embodiments of the present application, there are two pairs of conveying roller assemblies. The two pairs of conveying roller assemblies are arranged at intervals along the first preset direction P, and the two pairs of conveying roller assemblies jointly convey the workpiece to be cleaned 200. In other embodiments, only one pair of conveying roller assemblies can also be provided, or more than two pairs of conveying roller assemblies to convey the workpiece to be cleaned 200.

[0071] The width direction of the part 200 to be cleaned is set perpendicular to the first preset direction P. In some embodiments of the present application, the central axis of the blowing roller 121 is parallel to the width direction of the part 200 to be cleaned. In other embodiments, the central axis of the blowing roller 121 may also be inclined with respect to the width direction of the part 200 to be cleaned. In some embodiments of the present application, the central axes of the driving roller 111, the driven roller 112, the blowing roller 121, and the suction roller 131 are parallel; in other embodiments, the relationship of the central axes of the driving roller 111, the driven roller 112, the blowing roller 121, and the suction roller 131 may not be limited.

[0072] As Figure 1 and Figure 2 shown, based on the foregoing embodiment of "the first surface 210 of the part 200 to be cleaned has a coating layer", the blowing roller assembly 120 includes a blowing roller 121, the suction roller assembly 130 includes a suction roller 131, and one blowing roller 121 and one suction roller 131 are both arranged corresponding to the first surface 210. The blowing roller 121 blows air towards the first surface 210, and the suction roller 131 provides a negative pressure environment to guide the airflow to drive the dust 300 away from the first surface 210. Based on the foregoing embodiment of "the first surface 210 and the second surface 220 of the part 200 to be cleaned respectively have coating layers", the air outlet roller assembly includes a pair of air outlet rollers, the suction roller assembly 130 includes a pair of suction rollers 131, there is a gap for the part 200 to pass through between the pair of air outlet rollers, and there is a gap for the part 200 to pass through between the pair of suction rollers 131. The part 200 passes through the gaps between the pair of air outlet rollers and the pair of suction rollers 131 in sequence along the first preset direction P. The blowing roller 121 and the suction roller 131 on the same side as the first surface 210 perform dust removal on the first surface 210, and the blowing roller 121 and the suction roller 131 on the same side as the second surface 220 perform dust removal on the second surface 220. In other embodiments, the dust removal device for the part 200 can also be used to perform dust removal on other types of parts 200.

[0073] A plurality of suction openings are provided on the outer surface of the suction roller 131. The suction roller 131 is connected to an external air extraction device, and a negative pressure environment is formed around the suction openings to suck the gas containing the dust 300 into the suction roller 131 to perform dust removal on the part 200 to be cleaned.

[0074] Figure 3 Shown is a schematic structural diagram of a form of the blowing roller in some embodiments of the present application;

[0075] Figure 4 Shown is Figure 3 a schematic structural diagram of the roller body of the blowing roller in

[0076] As Figure 3 and Figure 4As shown in the figure, some embodiments of the present application propose a blowing roller 121, including a roller body 1211. A plurality of air outlets 12122 are provided on the outer peripheral surface 12111 of the roller body 1211. The plurality of air outlets 12122 are arranged along the axial direction of the roller body 1211. The air outlet direction of the air outlets 12122 is tangent to the outer peripheral surface 12111 of the roller body 1211, and the air outlet directions of the plurality of air outlets 12122 are the same.

[0077] Among them, the central axis of the roller body 1211 extends along the first axis Q. The two ends of the roller body 1211 along its circumferential direction are respectively the first end 12112 and the second end 12113. The air outlet direction of the air outlets 12122 is the second preset direction N.

[0078] It can be understood that the outer peripheral surface 12111 of the roller body 1211 refers to the surface that extends circumferentially around the central axis of the roller body 1211 (i.e., the first axis Q) and whose normal direction extends along the radial direction of the roller body 1211. The second preset direction can be perpendicular to the first axis Q or can be inclined to the first axis Q.

[0079] The plurality of air outlets 12122 are arranged at intervals along the direction of the first axis Q. The distance between two adjacent air outlets 12122 can be the same or different. The plurality of air outlets 12122 can be arranged from the first end 12112 to the second end 12113 of the roller body 1211 along the first axis Q, or can be arranged at a certain position between the first end 12112 and the second end 12113 of the roller body 1211 along the first axis Q. The air outlets 12122 can directly protrude from the outer peripheral surface 12111 of the roller body 1211; the outer peripheral surface 12111 of the roller body 1211 can also be further provided with recesses, and the air outlets 12122 are arranged in the recesses. The shape of the air outlets 12122 can be square, circular or other shapes.

[0080] During the rotation of the blowing roller 121 in the embodiment of the present application, the air outlet 12122 moves synchronously. On the one hand, during the rotation of the blowing roller 121, the air outlet 12122 of the blowing roller 121 gradually approaches the surface of the workpiece to be cleaned 200. The air outlet direction of the air outlet 12122 changes from a direction perpendicular to the surface of the workpiece to be cleaned 200 to a direction parallel to the surface of the workpiece to be cleaned 200. As the air outlet 12122 of the blowing roller 121 approaches the surface of the workpiece to be cleaned 200, the component of the air volume perpendicular to the surface of the workpiece to be cleaned 200 gradually decreases. When the air outlet 12122 is closest to the surface of the workpiece to be cleaned 200, the air outlet direction of the air outlet 12122 is parallel to the surface of the workpiece to be cleaned 200, which can prevent dust from being embedded in the surface of the workpiece to be cleaned 200. On the other hand, as the blowing roller 121 rotates, when the air outlet direction of the air outlet 12122 is parallel to the surface of the workpiece to be cleaned 200, the air volume of the air outlet 12122 has an initial velocity away from the surface of the workpiece to be cleaned 200 while blowing air tangentially along the roller body 1211, which can lift the dust on the surface of the workpiece to be cleaned 200 from the product surface and drive the dust away from the surface of the workpiece to be cleaned 200, having a good dust removal effect.

[0081] As Figure 3 shown, in some embodiments of the present application, the air outlet direction of the air outlet 12122 is inclined with respect to the central axis of the roller body 1211 (i.e., the first axis Q).

[0082] The first axis Q is parallel to the width direction of the workpiece to be cleaned 200, and the second preset direction N is inclined with respect to the first axis Q. When the roller body 1211 rotates to make the air outlet direction of the air outlet 12122 parallel to the surface of the workpiece to be cleaned 200, the air outlet direction of the air outlet 12122 is inclined with respect to the conveying direction of the workpiece to be cleaned 200 (i.e., the preset direction P).

[0083] Specifically, the included angle between the air outlet direction of the air outlet 12122 (i.e., the second preset direction N) and the conveying direction of the workpiece to be cleaned 200 (i.e., the preset direction P) is an acute angle. For example, the included angle between the second preset direction N and the preset direction P can be 30° or 45°, etc., and the air outlet 12122 generally blows air in the conveying direction of the workpiece to be cleaned 200.

[0084] In other embodiments, the second preset direction N can also be perpendicular to the first axis Q, that is, the air outlet direction of the air outlet 12122 is the same as the conveying direction of the workpiece to be cleaned 200.

[0085] By inclining the air outlet direction of the air outlet 12122 with respect to the conveying direction of the workpiece to be cleaned 200, the dust 300 can be driven to leave the workpiece to be cleaned 200 from the edge in the width direction of the workpiece to be cleaned 200, improving the dust removal effect of the blowing roller 121.

[0086] AsFigure 3 and Figure 4 As shown in Figure 4 , in some embodiments of the present application, the blowing roller 121 further includes: a plurality of air ducts 1212, the air ducts 1212 spirally extend around the central axis of the roller body 1211 (i.e., the first axis Q), one end of the air duct 1212 is an air inlet 12121, the other end is an air outlet 12122, and the plurality of air ducts 1212 are arranged in parallel.

[0087] The air duct 1212 can be an air pipe, and the air pipe is provided and connected separately from the roller body 1211; the air duct 1212 can also be a wind groove provided inside the roller body 1211, or a wind groove formed by the outer peripheral surface 12111 of the roller body 1211 and other components.

[0088] During the process of a single air duct 1212 spirally extending around the first axis Q, the air duct 1212 can be coiled around the roller body 1211 with an equal radius, or the coiling radius of the air duct 1212 can gradually increase from the air inlet 12121 to the air outlet 12122. The "coiling radius" refers to the distance between a certain point of the air duct 1212 and the first axis Q.

[0089] The number of the air ducts 1212 corresponds one-to-one with the number of the air outlets 12122. For example, if there are eight air ducts 1212, correspondingly, there are also eight air outlets 12122, and one air duct 1212 corresponds to one air inlet 12121, so that the air volume blown out from each air outlet 12122 is approximately uniform. In other embodiments, one air duct 1212 can correspond to multiple air outlets 12122 to reduce the number of air ducts 1212 and simplify the structure of the blowing roller 121. For example, if there are four air ducts 1212 and eight air outlets 12122, one air duct 1212 corresponds to two air outlets 12122. The end of the air duct 1212 far from the air inlet 12121 can be connected to two sub-air ducts at the same time, and each end of the sub-air duct is provided with an air outlet 12122, or a partition is provided at the opening of the end of the air duct 1212 far from the air inlet 12121 to form two air outlets 12122.

[0090] The air inlets 12121 of the plurality of air ducts 1212 can be centrally arranged at the first end 12112 or the second end 12113 of the roller body 1211 to communicate with an external air source; the air inlets 12121 of the plurality of air ducts 1212 can also be partially arranged at the first end 12112 of the roller body 1211 and partially arranged at the second end 12113 of the roller body 1211 according to actual needs, and are respectively communicated with an external air source at the first end 12112 and the second end 12113 of the roller body 1211.

[0091] Along the direction from the first end 12112 to the second end 12113 of the roller body 1211, the arrangement order of the air ducts 1212 is the same as that of the corresponding air outlet 12122 of each air duct 1212. That is to say, the length and winding angle of the air duct 1212 corresponding to the air outlet 12122 closest to the first end 12112 of the roller body 1211 are the shortest; along the direction from the first end 12112 to the second end 12113 of the roller body 1211, the length and winding angle of the air duct 1212 gradually increase, and the air outlets 12122 of each air duct 1212 are arranged in sequence along the direction from the first end 12112 to the second end 12113; the length and winding angle of the air duct 1212 corresponding to the air outlet 12122 closest to the second end 12113 of the roller body 1211 are the longest, and its winding angle is at most 360°, that is, it winds around the roller body 1211 for one week to avoid the air outlet direction of the air outlet 12122.

[0092] Taking the embodiment where "the air inlets 12121 of multiple air ducts 1212 are centrally arranged at the first end 12112 of the roller body 1211" as an example, the air inlet 12121 of each air duct 1212 is arranged at the first end 12112 of the roller body 1211. The air duct 1212 winds around the first axis Q on the outer peripheral surface 12111 of the roller body 1211. One end of the air duct 1212 is provided with an air inlet 12121 at the first end 12112 of the roller body 1211, and the other end is provided with an air outlet 12122 and exposes the outer peripheral surface 12111 of the roller body 1211. The air outlets 12122 of multiple air ducts 1212 are arranged at intervals along the first axis Q on the roller body 1211, and the same air duct 1212 winds around the roller body 1211 with an equal radius.

[0093] In other embodiments, multiple air ducts 1212 can also be arranged inside the roller body 1211; or an inner cavity is provided inside the roller body 1211, and the inner cavity is communicated with an external air source. The air inlets 12121 of multiple air ducts 1212 are all communicated with the inner cavity to realize the communication between the air source and the air outlet 12122.

[0094] Through the above structural form, each air outlet 12122 corresponds to an air duct 1212, which is beneficial to the uniformity of the air volume of multiple air outlets 12122. Moreover, the air duct 1212 spirally extends around the central axis of the roller body 1211, enabling the air direction in the air duct 1212 to spirally extend around the central axis of the roller body 1211, and the extension direction of the air duct 1212 is the same as the air outlet direction of the air outlet 12122. The air outlet air resistance of the air duct 1212 is small, and it has a good noise reduction effect.

[0095] In some embodiments of the present application, the distance between every two adjacent air ducts 1212 is the same.

[0096] Such as Figure 3 and Figure 4As shown, it can be understood that the "spacing between two adjacent air ducts 1212" refers to the spacing L between one air duct 1212 and the adjacent air duct 1212 along the first axis Q.

[0097] Taking the embodiment where "two adjacent air ducts 1212 are arranged in parallel" as an example, multiple air outlets 12122 are arranged at equal intervals along the first axis Q, which can make the blowing roller 121 blow air evenly along its axial direction.

[0098] With the above structural form, multiple air ducts 1212 are evenly arranged on the roller body 1211, which can simplify the structure of the blowing roller 121, facilitate the assembly and maintenance of the blowing roller 121, and the spacing between two adjacent air outlets 12122 is also the same.

[0099] In some embodiments of the present application, a plurality of spiral grooves 12114 are provided on the outer peripheral surface 12111 of the roller body 1211. The spiral grooves 12114 extend spirally around the central axis of the roller body 1211 (i.e., the first axis Q). The plurality of spiral grooves 12114 are arranged in parallel. The air ducts 1212 are air pipes, and a plurality of air pipes are correspondingly embedded in the plurality of spiral grooves 12114.

[0100] The material of the roller body 1211 can be copper, aluminum, stainless steel, etc., or can also be plastic material, etc. The present application embodiments do not limit this. The spiral grooves 12114 can be formed by planing and milling, or can be directly formed on the surface of the roller body 1211. For example, spiral grooves can be formed on the outer peripheral surface 12111 of the roller body 1211 by planing and milling. The air pipes are embedded in the corresponding spiral grooves 12114 according to the actual length, occupying at least part of the spiral grooves 12114 along the first axis Q. The two ends of the spiral grooves 12114 can penetrate the roller body 1211 to simplify the processing process of the spiral grooves 12114; one end or both ends of the spiral grooves 12114 can also not penetrate the roller body 1211 to facilitate the positioning and installation of the air pipes.

[0101] The material of the air pipes can be metal pipes such as copper pipes and aluminum pipes, or can also be composite pipes such as PVC. Along the radial direction of the roller body 1211, the air pipes can be completely embedded in the spiral grooves 12114, that is, the air pipes do not protrude from the outer peripheral surface 12111 of the roller body 1211; the air pipes can also be partially embedded in the spiral grooves 12114, that is, the air pipes partially protrude from the outer peripheral surface 12111 of the roller body 1211.

[0102] Optionally, the air pipes can be fixedly arranged with the roller body 1211 in the form of welding or bonding, or can be assisted to be fixed on the roller body 1211 through external connecting pieces, or can be fixed on the roller body 1211 in cooperation with the structure on the surface of the roller body 1211.

[0103] Such as Figure 3 and Figure 4As shown, in some embodiments of the present application, a through hole 12118 is provided at the edge of the first end 12112 of the roller body 1211. One end of the through hole 12118 communicates with the spiral groove 12114, and the other end extends to the side surface of the first end 12112 of the roller body 1211. The air duct passes through the through hole 12118, and the pipe section of the air duct on one side of the through hole 12118 is bent to be connected to the first end 12112 of the roller body 1211; the pipe section of the air duct located in the spiral groove 12114 is connected to the roller body 1211 by means of multiple welding or bonding methods.

[0104] In other embodiments, the outer peripheral surface 12111 of the roller body 1211 may not be provided with the spiral groove 12114, and the air duct is spirally wound around the outer peripheral surface 12111 of the roller body 1211 to reduce the manufacturing cost of the roller body 1211.

[0105] Through the above structural form, the structure of the roller body 1211 is simplified, and the forming cost of the air duct 1212 is reduced; the air duct is embedded in the corresponding spiral groove 12114, which not only facilitates the fixed assembly of the air duct and the roller body 1211, but also can reduce the increase in the outer dimension of the blowing roller 121 caused by the setting of the air duct, making the blowing roller 121 have a compact structure and occupy a smaller space.

[0106] Figure 5 Shown is a schematic structural diagram of another form of the blowing roller according to some embodiments of the present application (the housing is not shown); Figure 6 Shown is a cross-sectional view of another form of the blowing roller according to some embodiments of the present application.

[0107] As Figure 5 and Figure 6 shown, in some embodiments of the present application, a plurality of spiral grooves 12114 are provided on the outer peripheral surface 12111 of the roller body 1211. The spiral grooves 12114 extend spirally around the central axis (i.e., the first axis Q) of the roller body 1211, and the plurality of spiral grooves 12114 are arranged in parallel. The blowing roller 121 further includes a housing 1213. The housing 1213 covers the outer peripheral surface 12111 of the roller body 1211, and the spiral grooves 12114 and the inner wall 12131 of the housing 1213 jointly define the air duct 1212.

[0108] As Figure 6 shown, the housing 1213 covers the outer peripheral surface 12111 of the roller body 1211. The housing 1213 is provided with air discharge ports 12132 corresponding to the plurality of air outlet ports 12122, and the air discharge ports 12132 expose the plurality of air outlet ports 12122. The housing 1213 is rotatably mounted on an external frame, and the housing 1213 and the roller body 1211 are fixedly arranged to rotate synchronously with the roller body 1211.

[0109] The material of the housing 1213 may be the same as that of the roller body 1211 or different from that of the roller body 1211.

[0110] The "inner wall 12131 of the housing 1213" refers to the surface of the housing 1213 facing the outer peripheral surface 12111 of the roller body 1211. In some embodiments of the present application, the inner wall 12131 of the housing 1213 may be arranged in contact with the outer peripheral surface 12111 of the roller body 1211, and the inner wall 12131 of the housing 1213 and the spiral groove 12114 jointly form a circumferentially closed air duct 1212. In other embodiments, there may also be a gap between the inner wall 12131 of the housing 1213 and the outer peripheral surface 12111 of the roller body 1211. The inner wall 12131 of the housing 1213 and the spiral groove 12114 jointly form a circumferentially unclosed air duct 1212, and the inside of the housing 1213 and the outer peripheral surface 12111 of the roller body 1211 are also used for air passage. Among them, the edge of the air outlet 12132 of the housing 1213 is arranged in contact with the outer peripheral surface 12111 of the roller body 1211, so that the inner wall 12131 of the housing 1213 and the spiral groove 12114 form a circumferentially closed air outlet 12122.

[0111] There are various implementation forms in which the housing 1213 covers the outer peripheral surface 12111 of the roller body 1211. In some embodiments of the present application, the housing 1213 circumferentially wraps the roller body 1211 around the central axis (i.e., the first axis Q) of the roller body 1211, and there is an opening at the position of the roller body 1211 corresponding to the first end 12112. The first end 12112 of the air duct 1212 is connected to an external air source through the opening.

[0112] The blowing roller 121 is connected to a driving device to rotate the blowing roller around the first axis Q through the driving device. Specifically, the driving device may be in transmission connection with the second end 12113 of the roller body 1211 or in transmission connection with the housing 1213. The driving device includes but is not limited to a motor.

[0113] Through the above structural form, the spiral groove 12114 and the inner wall 12131 of the housing 1213 jointly define the air duct 1212, which can reduce the number of components of the blowing roller 121 and simplify the structure of the blowing roller 121.

[0114] As Figure 5 and Figure 6 shown, in some embodiments of the present application, the outer peripheral surface 12111 of the roller body 1211 is provided with an avoidance groove 12115, the avoidance groove 12115 extends along the axial direction (i.e., the first axis Q) of the roller body 1211, and the air outlet 12122 is arranged on one side wall of the avoidance groove 12115.

[0115] Specifically, the avoidance groove 12115 is formed by inward depression from the outer peripheral surface 12111 of the roller body 1211. The avoidance groove 12115 includes a first side wall 12116 and a second side wall 12117. Along the circumferential direction of the roller body 1211 (i.e., the direction around the first axis Q), one side of the first side wall 12116 is connected to the outer peripheral surface 12111 of the roller body 1211, and the other side is connected to one side of the second side wall 12117. The other side of the second side wall 12117 is connected to the outer peripheral surface 12111 of the roller body 1211. The air outlet 12122 is arranged on the first side wall 12116, and the second side wall 12117 is arranged parallel to the air outlet direction of the air outlet 12122 (i.e., the second preset direction N) so as to enable the air blown out from the air outlet 12122 to smoothly blow onto the surface of the workpiece to be cleaned 200. In other embodiments, the second side wall 12117 may also be inclined towards the direction close to the inside of the roller body 1211 based on the air outlet direction of the air outlet 12122 to better avoid the air volume blown out from the air outlet 12122.

[0116] The number of the avoidance grooves 12115 can be one. One avoidance groove 12115 can penetrate through the roller body 1211 along the first axis Q, or can be only arranged at the position where the air outlet 12122 is provided; the number of the avoidance grooves 12115 can also be multiple. Multiple avoidance grooves 12115 are arranged at intervals along the first axis Q, and the positions of the avoidance grooves 12115 are correspondingly arranged with the positions of the air outlets 12122.

[0117] Through the above structural form, by arranging the avoidance groove 12115 on the outer peripheral surface 12111 of the roller body 1211, the air outlet path of the air outlet 12122 can be made unobstructed. The air outlet 12122 is arranged on one side wall of the avoidance groove 12115, and when the air outlet 12122 is arranged, the outer diameter size of the roller body 1211 is not additionally increased, so that the blowing roller 121 has a compact structure and occupies a small space.

[0118] Figure 7 What is shown is Figure 3 a cross-sectional schematic view of the blowing roller in

[0119] As Figure 7 shown, in some embodiments of the present application, the blowing roller 121 further includes: an air inlet part 1214, and the air inlet part 1214 is located at one end of the roller body 1211, and the air inlets 12121 of each air duct 1212 are all communicated with the air inlet part 1214.

[0120] Specifically, taking the air inlet part 1214 located at the first end 12112 of the roller body 1211 as an example for illustration, the air inlet part 1214 is used to introduce an external air source and send the air flow into the multiple air ducts 1212. The air inlet part 1214 can be a pipeline or the inner cavity of the roller body 1211.

[0121] In other embodiments, the air inlet portion 1214 may not be provided, and the air inlet 12121 of the air duct 1212 may be directly connected to an external air source.

[0122] Further, a plurality of air ducts 1212 may be circumferentially and uniformly arranged around the opening of the air inlet portion 1214 connected to the air source. The shapes of the air inlets 12121 of each air duct 1212 are the same. After the air source enters the air inlet portion 1214, the air is evenly distributed, so that the air volume of each air duct 1212 is the same, and the air volume of the air outlet 12122 corresponding to each air duct 1212 is the same, realizing uniform air outlet along the axis of the blowing roller 121.

[0123] Through the above structural form, the air inlet portion 1214 is communicated with a plurality of air inlets 12121. The air source enters each air duct 1212 through the air inlet portion 1214. The air source is provided with one joint to communicate with the air inlet portion 1214, which can simplify the structure of the air source.

[0124] In some embodiments of the present application, the air inlet portion 1214 includes a main pipe 12141 and a plurality of branch pipes 12142. The main pipe 12141 is used to connect the air source. The plurality of branch pipes 12142 are arranged corresponding to the plurality of air ducts 1212. One end of each branch pipe 12142 is connected to the main pipe 12141, and the other end is connected to the corresponding air duct 1212.

[0125] Taking the embodiment where "the air duct 1212 is an air pipe" as an example, the materials of the main pipe 12141 and the plurality of branch pipes 12142 may be the same as or different from that of the air pipe. The present application embodiment does not limit this. One end of the main pipe 12141 and the branch pipe 12142 are welded and connected. The other end of the branch pipe 12142 and the air pipe are integrally formed structures, so that the external air source enters the air pipe. Taking the embodiment where "the spiral groove 12114 and the inner wall 12131 of the housing 1213 jointly define the air duct 1212" as an example, the spiral groove 12114 penetrates through the side wall of the first end 12112. One end of the branch pipe 12142 is connected to the main pipe 12141, and the other end is communicated with the spiral groove 12114 to introduce the air flow into the air duct 1212.

[0126] In other embodiments, the air inlet portion 1214 may also be formed inside the roller body 1211 or in the space between the roller body 1211 and the housing 1213.

[0127] Through the above structural form, the air source enters the corresponding air duct 1212 through the main pipe 12141 and the branch pipe 12142, and blows out from the corresponding air outlet 12122. During the air supply process, the air source does not accumulate inside the blowing roller 121, and the air output volume of the air source is the same as the air output volume of the blowing roller 121, which can effectively reduce the dissipation of the air source during the transportation process.

[0128] Some embodiments of the present application provide a dust removal device 100, which includes a conveying mechanism 110 and a blowing roller 121. The conveying mechanism 110 is configured to convey a workpiece to be cleaned 200. The blowing roller 121 is disposed downstream of the conveying mechanism 110 and is configured to blow air onto the surface of the workpiece to be cleaned 200.

[0129] In the dust removal device 100 according to the embodiments of the present application, the conveying mechanism 110 conveys the workpiece to be cleaned 200 forward, and the blowing roller 121 blows air onto the surface of the workpiece to be cleaned 200. On the one hand, as the air outlet 12122 of the blowing roller 121 approaches the surface of the workpiece to be cleaned 200, the component of the air volume perpendicular to the surface of the workpiece to be cleaned 200 gradually decreases, which can prevent dust from being blown onto the surface of the workpiece to be cleaned 200. On the other hand, when the air outlet 12122 is far from the surface of the workpiece to be cleaned 200, the air volume of the air outlet drives the dust to rise away from the surface of the workpiece to be cleaned 200, preventing dust from accumulating on the surface of the workpiece to be cleaned 200. Due to the characteristics of the blowing roller 121, the dust removal device for the workpiece to be cleaned 200 also has a good dust removal effect.

[0130] In some embodiments of the present application, a pair of blowing rollers 121 are provided, and there is a gap for the workpiece to be cleaned 200 to pass through between the pair of blowing rollers 121.

[0131] With the above structural form, the workpiece to be cleaned 200 passes through the gap between the pair of blowing rollers 121, and each blowing roller 121 corresponds to one side surface of the workpiece to be cleaned 200, so as to simultaneously remove dust from both side surfaces of the workpiece to be cleaned 200, having a good dust removal effect.

[0132] In some embodiments of the present application, the dust removal device for the workpiece to be cleaned 200 further includes a suction roller 131. Along the conveying direction of the workpiece to be cleaned 200, the suction roller 131 is located downstream of the blowing roller 121.

[0133] With the above structural form, the suction roller 131 is disposed downstream of the blowing roller 121 to guide the air flow from the blowing roller 121 into the suction roller 131, so as to take away the dust 300 on the surface of the workpiece to be cleaned 200 through the air flow, having a good dust removal effect.

[0134] Figure 8 The figure shows the working principle diagram of the first implementation form of the dust removal method according to some embodiments of the present application.

[0135] As Figure 8 shown, some embodiments of the present application provide a dust removal method, including:

[0136] S100: Provide a blowing roller 121, the blowing roller 121 includes a roller body 1211, and a plurality of air outlets 12122 are arranged on the outer peripheral surface 12111 of the roller body 1211. The plurality of air outlets 12122 are arranged along the axial direction of the roller body 1211, the air outlet direction of the air outlets 12122 is tangent to the outer peripheral surface 12111 of the roller body 1211, and the air outlet directions of the plurality of air outlets 12122 are the same;

[0137] S200: Pass the part to be cleaned 200 through the blowing roller 121, and the blowing roller 121 rotates and blows air to the surface of the part to be cleaned 200.

[0138] In the dust removal method of some embodiments of the present application, on the one hand, as the air outlet 12122 of the blowing roller 121 approaches the surface of the part to be cleaned 200, the component of the air outlet air volume perpendicular to the surface of the part to be cleaned 200 gradually becomes smaller, which can avoid blowing dust onto the surface of the part to be cleaned 200; on the other hand, when the air outlet 12122 is far from the surface of the part to be cleaned 200, the air outlet air volume drives the dust to rise in a direction away from the surface of the part to be cleaned 200, avoiding dust accumulation on the surface of the part to be cleaned 200. Due to the characteristics of the blowing roller 121, the above-mentioned dust removal method for the part to be cleaned 200 can effectively remove the dust 300 on the surface of the part to be cleaned 200 and has a good dust removal effect.

[0139] Figure 9 The figure shows the working principle diagram of the second implementation form of the dust removal method of some embodiments of the present application.

[0140] As Figure 9 shown, in some embodiments of the present application, the dust removal method further includes:

[0141] S110: Provide a pair of blowing rollers 121;

[0142] S210: Pass the part to be cleaned 200 through the gap between a pair of blowing rollers 121, and control the pair of blowing rollers 121 to rotate in opposite directions and blow air to the surface of the part to be cleaned 200.

[0143] Figure 10 The figure shows a schematic diagram of a pair of blowing rollers rotating in opposite directions in the dust removal method of some embodiments of the present application.

[0144] As Figure 10As shown in the figure, based on the above-described embodiment in which the "first preset direction P" extends in the horizontal direction, the two blowing rollers 121 are respectively a first blowing roller 121a and a second blowing roller 121b. The first blowing roller 121a is located above the workpiece to be cleaned 200 and corresponds to the first surface 210, and the second blowing roller 121b is located below the workpiece to be cleaned 200 and corresponds to the second surface 220. The first blowing roller 121a rotates around the third preset direction O1, and the second blowing roller 121b rotates around the fourth preset direction O2, and the third preset direction O1 and the fourth preset direction O2 are arranged in opposite directions.

[0145] The air volume of the air outlet 12122 of the blowing roller 121 has a component in the same direction as the rotation direction of the blowing roller 121, which can make the air blown out from the air outlet 12122 carry the initial rotation speed of the blowing roller 121, and can drive the dust 300 to move away from the surface of the workpiece to be cleaned 200 for negative pressure dust suction by the downstream suction roller 131.

[0146] During the rotation process, the first blowing roller 121a and the second blowing roller 121b may not have a phase difference, and the air outlets 12122 of the first blowing roller 121a and the second blowing roller 121b approach or move away from the surface of the workpiece to be cleaned 200 synchronously; the rotation phases of the first blowing roller 121a and the second blowing roller 121b may also have a phase difference. While the air outlet 12122 of the first blowing roller 121a moves closer to the surface of the workpiece to be cleaned 200, the air outlet 12122 of the second blowing roller 121b moves away from the surface of the workpiece to be cleaned 200, and the air outlets 12122 of the first blowing roller 121a and the second blowing roller 121b alternately blow towards the surface of the workpiece to be cleaned 200.

[0147] In the above form, the workpiece to be cleaned 200 passes through the gap between a pair of blowing rollers 121. Each blowing roller 121 corresponds to one side surface of the workpiece to be cleaned 200, and a pair of blowing rollers 121 rotate in opposite directions to simultaneously remove dust from both side surfaces of the workpiece to be cleaned 200, having a good dust removal effect.

[0148] Figure 11 The figure shows the working principle diagram of the third implementation form of the dust removal method in some embodiments of the present application; Figure 12 The figure shows the schematic diagram of the phase change of two blowing rollers in the dust removal method in some embodiments of the present application.

[0149] As Figure 11 and Figure 12 shown, in some embodiments of the present application, S210 controls a pair of blowing rollers 121 to rotate in opposite directions and blow air towards the surface of the workpiece to be cleaned 200, including:

[0150] S211: Control the rotational phase difference between the two blowing rollers 121 to be 180°, so that the two blowing rollers 121 alternately blow air onto the surface of the workpiece to be cleaned 200.

[0151] Specifically, the phase difference between the air outlet 12122 of the blowing roller 121 and the air outlet 12122 of the blowing roller 121 is 180°.

[0152] As Figure 12 shown, in some embodiments of the present application, during the rotation of the first blowing roller 121a, when the air outlet 12122 of the first blowing roller 121a is closest to the first surface 210, the air outlet 12122 of the second blowing roller 121b is farthest from the second surface 220; when the air outlet 12122 of the first blowing roller 121a is farthest from the first surface 210, the air outlet 12122 of the second blowing roller 121b is closest to the second surface 220.

[0153] In other embodiments, the phase difference between the air outlet 12122 of the first blowing roller 121a and the air outlet 12122 of the second blowing roller 121b can also be 90° or 270°, etc.

[0154] In the above manner, the two blowing rollers 121 are respectively arranged on both sides of the workpiece to be cleaned 200, and the two blowing rollers 121 alternately blow air onto the surface of the workpiece to be cleaned 200, so that air pressure can be alternately applied to both sides of the workpiece to be cleaned 200, thereby causing the workpiece to be cleaned 200 to vibrate, shaking off and separating the dust on the surface of the workpiece to be cleaned 200, and having a good dust removal effect.

[0155] Figure 13 The figure shows the working principle diagram of the fourth implementation form of the dust removal method in some embodiments of the present application.

[0156] As Figure 12 and Figure 13 shown, in some embodiments of the present application, S200: The blowing roller 121 rotates and blows air onto the surface of the workpiece to be cleaned 200, including:

[0157] S220: When the blowing roller 121 rotates so that the air outlet 12122 moves to one side close to the surface of the workpiece to be cleaned 200 and the air outlet direction is parallel to the surface of the workpiece to be cleaned 200, the air outlet 12122 starts to blow air;

[0158] S230: When the blowing roller 121 rotates so that the air outlet 12122 moves to the side away from the surface of the workpiece to be cleaned 200 and the air outlet direction is perpendicular to the surface of the workpiece to be cleaned 200, the air outlet 12122 stops blowing air.

[0159] As Figure 12 and 13As shown, in some embodiments of the present application, during the rotation of the first blowing roller 121a, the air outlet 12122 of the first blowing roller 121a starts blowing air when it is about to be closest to the first surface 210, and stops blowing air when it is about to be farthest from the first surface 210; when the air outlet 12122 of the first blowing roller 121a is about to reach the position farthest from the first surface 210 and stops blowing air, the air outlet 12122 of the second blowing roller 121b is about to reach the position closest to the second surface 220 and starts blowing air, and when the air outlet 12122 of the first blowing roller 121a is about to reach the position closest to the first surface 210 and starts blowing air, the air outlet 12122 of the second blowing roller 121b is about to reach the position farthest from the second surface 220 and stops blowing air.

[0160] By the above method, not only can the air volume used in the dust removal operation of the blowing roller 121 be reduced, thereby reducing the dust removal cost, but also the blowing to the surface of the workpiece 200 to be cleaned can be stopped when there is a component of the air outlet air volume of the air outlet 12122 blowing vertically towards the surface of the workpiece 200 to be cleaned, which can further prevent dust from being blown onto the surface of the workpiece 200 to be cleaned.

[0161] In other embodiments, the first blowing roller 121a and the second blowing roller 121b can continuously blow air during rotation, which is easy to control.

[0162] As Figures 1 to 13 As shown, some embodiments of the present application provide a dust removal device 100 for dust removal of the electrode sheet. The dust removal device 100 includes a conveying mechanism 110, a pair of blowing rollers 121 and a pair of suction rollers 131. The pair of blowing rollers 121 are a pair of spiral blowing rollers. Under the conveyance of the conveying mechanism 110, the electrode sheet passes through the upper blowing roller 121 and the lower blowing roller 121 for dust removal, and the blown dust particles together with the blown gas are sucked away by the suction roller 131. Among them, a set of left-handed spiral air ducts 1212 are arranged on the upper blowing roller 121, and a set of right-handed spiral air ducts 1212 are arranged on the lower blowing roller 121. A row of air outlets 12122 are opened in the direction parallel to the axial direction of the roller body 1211 of the plurality of air ducts 1212. During dust removal, the air outlets 12122 of the upper and lower blowing rollers 121 blow out spiral eddy air. At the same time, the upper blowing roller 121 rotates counterclockwise at a high speed, and the lower blowing roller 121 rotates clockwise at a high speed. The flow rate of the eddy air is superimposed with the rotation speed of the blowing roller 121, which increases the wind speed of the eddy air and improves the dust removal effect. Among them, the air duct 1212 can be an air pipe or can be formed by splicing a spiral groove and a housing. The first end 12112 of the roller body 1211 is provided with an air inlet part 1214, and the air inlet part 1214 can be in the form of including a main pipe 12141 and a branch pipe 12142, or can be an air equalizing cavity.

[0163] AsFigures 1 to 13 As shown, some embodiments of the present application also provide a dust removal method with good dust removal effect. Here, taking the use of the dust removal device 100 as an example, the dust removal method will be specifically described. It should be noted that the implementation of this dust removal method is not limited to the use of the dust removal device in the embodiments of the present application.

[0164] The dust removal method includes:

[0165] Using the conveying mechanism 110 to convey the pole piece forward, so that the pole piece passes through the gap between a pair of spiral air rollers;

[0166] By controlling the rotation phase difference between the upper blowing roller 121 and the lower blowing roller 121 by the motor to be 180°, the upper air outlet 12122 and the lower air outlet 12122 blow air to both sides of the pole piece in an alternating manner, causing the pole piece to vibrate up and down at a high frequency and accelerating the falling of dust particles;

[0167] The air suction roller 131 sucks air from the downstream of the blowing roller 121 and extracts the air with dust particles.

[0168] In the above process of pole piece dust removal, first, since the eddy current air outlet has no component force perpendicular to the surface of the pole piece, it will not squeeze the sharp burrs towards the surface of the pole piece, nor blow the burrs into the coating layer. Secondly, during the rotation of the blowing roller 121, the air outlet direction of the air outlet 12122 is superimposed on the rotation direction of the blowing roller 121, which can increase the air outlet speed of the blowing roller 121 and drive the dust to move away from the surface of the pole piece; thirdly, the air flow of the eddy current air outlet can be decomposed into a component force away from the surface of the pole piece and a component force extending along the surface of the pole piece, and the component force away from the surface of the pole piece can promote the detachment of dust from the surface of the pole piece; finally, the upper and lower blowing rollers 121 blow towards the surface of the pole piece in turn, causing the pole piece to vibrate and being able to shake off the dust particles, thus having a good dust removal effect.

[0169] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0170] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A blowing roller for blowing air onto the surface of a part to be cleaned, characterized in that, Comprising: A roller body, on the outer peripheral surface of which there are provided a plurality of air outlets, the plurality of air outlets being arranged along the axial direction of the roller body, the air outlet direction of the air outlets being tangent to the outer peripheral surface of the roller body, the air outlet directions of the plurality of air outlets being the same, and the roller body being configured such that when rotating, the air outlet direction of the air outlets can be parallel to the surface of the workpiece to be cleaned.

2. The blowing roller according to claim 1, wherein, The air outlet direction of the air outlets is inclined with respect to the central axis of the roller body.

3. The blowing roller according to claim 1, wherein The blowing roller further comprises: A plurality of air ducts, the air ducts spirally extending around the central axis of the roller body, one end of the air duct being an air inlet and the other end being the air outlet, the plurality of air ducts being arranged in parallel.

4. The blowing roller according to claim 3, wherein The distance between every two adjacent air ducts is the same.

5. The blowing roller according to claim 3, wherein On the outer peripheral surface of the roller body, there are provided a plurality of spiral grooves, the spiral grooves spirally extending around the central axis of the roller body, the plurality of spiral grooves being arranged in parallel, the air ducts being air pipes, and the plurality of air pipes being correspondingly embedded in the plurality of spiral grooves.

6. The blowing roller according to claim 3, characterized in that, On the outer peripheral surface of the roller body, there are provided a plurality of spiral grooves, the spiral grooves spirally extending around the central axis of the roller body, the plurality of spiral grooves being arranged in parallel, the blowing roller further comprising a housing, the housing covering the outer peripheral surface of the roller body, and the spiral grooves and the inner wall of the housing jointly defining the air ducts.

7. The blowing roller according to claim 5 or 6, characterized in that On the outer peripheral surface of the roller body, there is provided an avoidance groove, the avoidance groove extending along the axial direction of the roller body, and the air outlet being provided on one side wall of the avoidance groove.

8. The blowing roller according to any one of claims 3-5, characterized in that, The blowing roller further comprises: An air inlet part, the air inlet part being located at one end of the roller body, and the air inlet of each air duct being communicated with the air inlet part.

9. The blowing roller according to claim 8, wherein, The air inlet part comprises a main pipe and a plurality of branch pipes, the main pipe being used for connecting to an air source, the plurality of branch pipes being correspondingly arranged with the plurality of air ducts, one end of each branch pipe being connected to the main pipe and the other end being connected to the corresponding air duct.

10. A dust removal device, characterized in that, Comprising: A conveying mechanism, configured to convey the workpiece to be cleaned; The blowing roller according to any one of claims 1-9, provided downstream of the conveying mechanism, the blowing roller being configured to blow air onto the surface of the workpiece to be cleaned.

11. The dust removal device according to claim 10, characterized in that, There are a pair of blowing rollers provided, and there is a gap for the workpiece to be cleaned to pass through between the pair of blowing rollers.

12. The dust removal device according to claim 10, characterized in that, Further comprising: A suction roller, along the conveying direction of the workpiece to be cleaned, the suction roller being located downstream of the blowing roller.

13. A dust removal method, characterized in that, Comprising: Providing a blowing roller, the blowing roller comprising a roller body, on the outer peripheral surface of which there are provided a plurality of air outlets, the plurality of air outlets being arranged along the axial direction of the roller body, the air outlet direction of the air outlets being tangent to the outer peripheral surface of the roller body, and the air outlet directions of the plurality of air outlets being the same; Making the workpiece to be cleaned pass through the blowing roller, and the blowing roller rotates and blows air onto the surface of the workpiece to be cleaned.

14. The dust removal method according to claim 13, wherein Comprising: Providing a pair of the blowing rollers; Making the workpiece to be cleaned pass through the gap between the pair of blowing rollers, and controlling the pair of blowing rollers to rotate in opposite directions and blow air onto the surface of the workpiece to be cleaned.

15. The dust removal method according to claim 14, wherein, The controlling the pair of blowing rollers to rotate in opposite directions and blow air onto the surface of the workpiece to be cleaned includes: Controlling the rotation phase difference between the two blowing rollers to be 180°, so that the two blowing rollers alternately blow air onto the surface of the workpiece to be cleaned.

16. The dust removal method according to claim 13, wherein, The blowing roller rotates and blows air onto the surface of the part to be cleaned, including: When the blowing roller rotates to move the air outlet to a side close to the surface of the part to be cleaned and the air outlet direction is parallel to the surface of the part to be cleaned, the air outlet starts to blow air; When the blowing roller rotates to move the air outlet to a side away from the surface of the part to be cleaned and the air outlet direction is perpendicular to the surface of the part to be cleaned, the air outlet stops blowing air.

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