A drum conveyor with self-cleaning function

Abstract

The present invention discloses a drum conveyor with a self-cleaning function, which relates to the technical field of transportation equipment and includes a frame and multiple drums; a plurality of cleaning mechanisms, each of which includes multiple first rollers and multiple brush strips. A first vacuum chamber is formed in each of the multiple first rollers, and a plurality of first suction holes communicating with the first vacuum chamber are provided on the outer walls of the multiple first rollers. The multiple brush strips are respectively wound around the outer walls of the multiple first rollers and are all spiral. The brush strips are simultaneously in contact with two adjacent drums; a second driving device, which is used to drive the multiple first rollers to rotate so that the multiple brush strips can brush off the particles attached to the multiple drums; a vacuum generating device, which is used to make the multiple first vacuum chambers form a negative pressure. The particles attached to the surfaces of the multiple drums can be removed in time, effectively avoiding the transfer of the particles attached to the drum surfaces to the raw material substrates, which is beneficial to ensuring the coating quality of the raw material substrates.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation equipment, and particularly relates to a drum conveyor with a self-cleaning function. Background Art

[0002] In the manufacturing process of liquid crystal displays, it is necessary to coat the raw material substrates of liquid crystal displays so that the raw material substrates can have specific functions and properties. Currently, drum conveyors are often used to transport the raw material substrates. During the long-term use of the drum conveyor, particles are likely to adhere to the surface of the drums in the drum conveyor, and the particles adhering to the drum surface are likely to be transferred to the raw material substrates. The coating process has high requirements for the cleanliness of the raw material substrates. Once the raw material substrates are contaminated with particles, the coating layer is extremely likely to have defects, thereby reducing the coating quality of the raw material substrates. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a drum conveyor with a self-cleaning function, which can remove the particles adhering to the surface of the drums to prevent the particles on the drum surface from being transferred to the raw material substrates, thereby being beneficial to ensuring the coating quality of the raw material substrates.

[0004] The drum conveyor with a self-cleaning function according to an embodiment of the present invention includes a frame, a first driving device, a second driving device, a vacuum generating device, a plurality of drums, and a plurality of cleaning mechanisms. The left and right ends of the plurality of drums are rotatably connected to the frame, the plurality of drums are distributed in the front-rear direction, and the plurality of drums are all used to support the raw material substrates. An installation station is provided in the lower region between any two adjacent drums; the first driving device is used to drive the plurality of drums to rotate so as to convey the raw material substrates from the rear to the front by the plurality of drums; the plurality of cleaning mechanisms each include a plurality of first rollers and a plurality of brush strips. The left and right ends of the plurality of first rollers are rotatably connected to the frame, the plurality of first rollers are respectively arranged at the plurality of installation stations, a first vacuum chamber is formed in each of the plurality of first rollers, a plurality of first suction holes communicating with the first vacuum chamber are provided on the outer walls of the plurality of first rollers, the plurality of brush strips are respectively wound around the outer walls of the plurality of first rollers and are all spiral, and the brush strips are in contact with two adjacent drums at the same time; the second driving device is used to drive the plurality of first rollers to rotate, and the rotation direction of the first rollers is opposite to that of the drums, so that the plurality of brush strips can brush off the particles adhering to the plurality of drums; the vacuum generating device is used to make the plurality of first vacuum chambers form a negative pressure so that the particles falling from the drums can be sucked into the first vacuum chambers by the first suction holes.

[0005] It has at least the following beneficial effects:

[0006] In the process of conveying the raw material substrate by multiple rollers, the second driving device drives the multiple first rollers to rotate. Since the outer walls of the multiple first rollers are all wound with spiral brush strips, and the brush strips are simultaneously against two adjacent rollers, the particles attached to the surfaces of the multiple rollers will be brushed away by the brush strips under the brushing action of the multiple brush strips. While the multiple first rollers are rotating, the vacuum generating device remains turned on. Under the action of the vacuum generating device, the first vacuum chambers in the multiple first rollers will all generate negative pressure, so that the multiple first suction holes on the outer walls of the multiple first rollers will all generate suction force, and then the particles brushed off from the roller surface can be sucked into the first vacuum chamber by the multiple first suction holes, so as to achieve the cleaning effect of the particles on the roller surface. In the process of conveying the raw material substrate, the particles attached to the surface of the multiple rollers in the roller conveyor can be removed in time, which effectively prevents the particles attached to the roller surface from being transferred to the raw material substrate, which is beneficial to ensure the coating quality of the raw material substrate.

[0007] According to the roller conveyor with self-cleaning function of an embodiment of the present invention, the cleaning mechanism also includes a first baffle plate, the length direction of the first baffle plate is parallel to the first roller body, the first baffle plate is arranged in the first vacuum chamber, the left and right ends of the first baffle plate are respectively rotatably connected to the left and right inner walls of the first vacuum chamber to keep the first baffle plate stationary relative to the frame, and the first baffle plate is used to seal the multiple first suction holes on the lower half of the first roller body to increase the suction force of the multiple first suction holes on the upper half of the first roller body.

[0008] According to the roller conveyor with self-cleaning function of the embodiment of the present invention, a first spiral groove is provided on the outer wall of the first roller body, and the brush strip is clamped in the first spiral groove.

[0009] According to the roller conveyor with self-cleaning function of an embodiment of the present invention, the cleaning mechanism also includes a second roller body, the second roller body is arranged below the first roller body, the left and right ends of the second roller body are arranged on the frame, a second vacuum chamber is formed in the second roller body, and a plurality of second suction holes connected to the second vacuum chamber are opened on the outer wall of the second roller body. The second roller body is against the brush strip, and the vacuum generating device is used to form a negative pressure in the second vacuum chamber so that the particles attached to the brush strip are sucked into the second vacuum chamber by the second suction holes.

[0010] According to the roller conveyor with self-cleaning function of an embodiment of the present invention, the cleaning mechanism also includes a transmission assembly, and the left and right ends of the second roller body are rotatably connected to the frame, and the second roller body is transmission-connected to the first roller body through the transmission assembly so that the second roller body rotates with the first roller body, and the second roller body and the first roller body have opposite directions of rotation.

[0011] A drum conveyor with a self-cleaning function according to an embodiment of the present invention, the transmission assembly includes a driving gear and a driven gear, the driving gear is arranged on the first roller body, the driven gear is arranged on the second roller body, and the driving gear and the driven gear mesh with each other.

[0012] A drum conveyor with a self-cleaning function according to an embodiment of the present invention, the cleaning mechanism further includes a second baffle plate, the length direction of the second baffle plate is parallel to the second roller body, the second baffle plate is arranged in the second vacuum chamber, and the left and right ends of the second baffle plate are respectively rotatably connected to the left and right inner side walls of the second vacuum chamber, so that the second baffle plate remains stationary relative to the frame, and the second baffle plate is used to seal a plurality of the second suction holes on the lower half of the second roller body to increase the suction force of a plurality of the second suction holes on the upper half of the second roller body.

[0013] A drum conveyor with a self-cleaning function according to an embodiment of the present invention, the cleaning mechanism further includes a scraping strip, the scraping strip is wound around the outer wall of the second roller body and is spiral, the scraping strip has a reverse helix direction to the brush strip, and the second roller body abuts against the brush strip through the scraping strip, so that the scraping strip can scrape off the particles attached to the brush strip.

[0014] A drum conveyor with a self-cleaning function according to an embodiment of the present invention, a second spiral card slot is arranged on the outer wall of the second roller body, and the scraping strip is clamped in the second spiral card slot.

[0015] A drum conveyor with a self-cleaning function according to an embodiment of the present invention, a plurality of negative pressure holes communicating with the second vacuum chamber are opened on the inner wall of the second spiral card slot, the plurality of negative pressure holes are distributed along the extending direction of the second spiral card slot, a vacuum groove is arranged on the scraping strip, the vacuum groove extends along the extending direction of the scraping strip, the vacuum groove communicates with the second vacuum chamber through the plurality of negative pressure holes, the scraping strip has a scraping surface, the scraping strip abuts against the brush strip through the scraping surface, a plurality of third suction holes are arranged on the scraping surface, the plurality of third suction holes are distributed along the extending direction of the scraping strip, and the plurality of third suction holes are all communicated with the vacuum groove, so that the particles attached to the brush strip can be sucked into the second vacuum chamber by the plurality of third suction holes.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0018] Figure 1 Schematic structural diagram of a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0019] Figure 2 is Figure 1 Partial enlarged view at A in

[0020] Figure 3 Schematic structural diagram of a cleaning mechanism and two adjacent drums in a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0021] Figure 4 Schematic internal structural diagram of a first roller body and a second roller body in a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0022] Figure 5 Schematic side view of the cooperation of multiple drums and multiple cleaning structures in a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0023] Figure 6 Schematic side view of a first roller body and a second roller body in a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0024] Figure 7 Schematic structural diagram of a first baffle in a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0025] Figure 8 Schematic structural diagram of another embodiment of a scraping strip in a drum conveyor with a self-cleaning function according to an embodiment of the present invention;

[0026] Reference numerals in the drawings:

[0027] Cleaning mechanism 100; First roller body 110; First vacuum chamber 111; First suction hole 112; Second roller body 120; Second vacuum chamber 121; Second suction hole 122; Brush strip 130; Scraping strip 140; Vacuum groove 141; Third suction hole 142; Scraping surface 143; Transmission assembly 150; Driving gear 151; Driven gear 152; First baffle 160; Second baffle 170;

[0028] Frame 200; Drum 210;

[0029] First driving device 300. Detailed implementation manners

[0030] In the description of the present invention, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0031] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0033] It should be explained that during the long-term use of the roller conveyor, the friction between the raw material substrate and the roller may gradually wear the surface of the roller, and the particles generated by the wear will adhere to the surface of the roller. On the other hand, particles such as dust in the conveying environment are also likely to adhere to the surface of the roller. On the other hand, during the long-term rotation of the roller, the wear at the connection between the roller and the frame will also generate particles and adhere to the surface of the roller. During the process of the roller conveying the raw material substrate, the particles on the surface of the roller will be transferred to the raw material substrate. Once the surface of the raw material substrate is contaminated with particles, these particles will block the normal deposition of the coating material, resulting in defects on the surface of the coating layer. These defects not only affect the appearance quality of the coating layer, but also damage the continuity and integrity of the coating layer, thereby reducing the coating quality of the raw material substrate, and even causing problems such as uneven brightness and color deviation in the display effect of the produced liquid crystal display screen.

[0034] Reference Figure 1 、 Figure 3 and Figure 5 , the present invention discloses a roller conveyor with a self-cleaning function, including a frame 200, a first driving device 300, a second driving device (not shown in the figure), a vacuum generating device (not shown in the figure), a plurality of rollers 210, and a plurality of cleaning mechanisms 100.

[0035] Both the left and right ends of multiple rollers 210 are rotatably connected to the frame 200. The multiple rollers 210 are distributed in the front-rear direction and are all used to support the raw material substrate. The frame 200 is provided with installation stations in the lower regions between any two adjacent rollers 210; the first driving device 300 is used to drive the multiple rollers 210 to rotate, so as to convey the raw material substrate from the rear to the front by the multiple rollers 210; multiple cleaning mechanisms 100 each include multiple first rollers 110 and multiple brush strips 130. Both the left and right ends of the multiple first rollers 110 are rotatably connected to the frame 200, and the multiple first rollers 110 are respectively arranged at multiple installation stations. A first vacuum chamber 111 is formed in each of the multiple first rollers 110, and a plurality of first suction holes 112 communicating with the first vacuum chamber 111 are provided on the outer walls of the multiple first rollers 110. The multiple brush strips 130 are respectively wound around the outer walls of the multiple first rollers 110 and are all spiral. The multiple first rollers 110 are simultaneously abutted against two adjacent rollers 210 through the brush strips 130; the second driving device is used to drive the multiple first rollers 110 to rotate, and the rotation direction of the first roller 110 is opposite to that of the roller 210, so that the multiple brush strips 130 can brush off the particles attached to the multiple rollers 210; the vacuum generating device is used to make the multiple first vacuum chambers 111 form a negative pressure, so that the particles falling from the roller 210 can be sucked into the first vacuum chamber 111 through the first suction holes 112.

[0036] In the embodiment of the present invention, the length direction of the roller 210 is parallel to the left-right direction. The first driving device 300 includes a first motor, a first chain and multiple first sprockets. The first motor is connected to the frame 200. The multiple first sprockets are respectively connected to the left ends of the multiple rollers 210. The first chain is wound around the multiple first sprockets. The first motor can drive one of the first sprockets to rotate, and the first chain and the multiple first sprockets can rotate synchronously, so that the multiple rollers 210 can rotate synchronously, and further the roller 210 can convey the raw material substrate from the rear to the front. The first driving device 300 is a common chain and sprocket driving device, which will not be further described here.

[0037] Reference Figure 5, an installation station for installing the first roller body 110 is provided in the area below any two adjacent rollers 210. Each of the plurality of cleaning mechanisms 100 includes a plurality of first roller bodies 110 and a plurality of brush strips 130. The length direction of the first roller body 110 is parallel to the length direction of the roller 210, and the plurality of first roller bodies 110 are respectively installed at a plurality of installation stations, that is, each first roller body 110 is disposed below two adjacent rollers 210. A helical brush strip 130 is wound around the outer wall of each of the plurality of first roller bodies 110 (that is, a brush strip 130 is wound around the outer wall of each of the plurality of first roller bodies 110 in a helical shape). The outer walls of the plurality of first roller bodies 110 are simultaneously abutted against the surfaces of two adjacent rollers 210 through the brush strips 130. A first vacuum chamber 111 is formed in each of the plurality of first roller bodies 110, and a plurality of first suction holes 112 communicating with the first vacuum chamber 111 are provided on the outer walls of the plurality of first roller bodies 110. The vacuum generating device is arranged on the frame 200 and is simultaneously communicated with the first vacuum chambers 111 on the plurality of first roller bodies 110. After the vacuum generating device is started, a negative pressure is formed in the first vacuum chambers 111 on the plurality of first roller bodies 110, so that a negative pressure is generated in the plurality of first suction holes 112 on the plurality of first roller bodies 110, and the first suction holes 112 have a suction force.

[0038] In the embodiment of the present invention, the second driving device includes a second motor, a second chain and a plurality of second sprockets. The second motor is connected to the frame 200. The plurality of second sprockets are respectively connected to the left ends of the plurality of first roller bodies 110. The second chain is wound around the plurality of second sprockets. The second motor can drive one of the second sprockets to rotate, and the second chain and the plurality of second sprockets can rotate synchronously, so that the plurality of first roller bodies 110 can rotate synchronously, and then the roller 210 can convey the raw material substrate from back to front. The second driving device is a common chain and sprocket driving device, and will not be further described here.

[0039] It can be understood that during the process of multiple rollers 210 conveying the raw material substrate, the second driving device drives multiple first roller bodies 110 to rotate. Since spiral brush strips 130 are wound around the outer walls of the multiple first roller bodies 110, and the brush strips 130 are in contact with two adjacent rollers 210 simultaneously, under the brushing action of the multiple brush strips 130, the fine particles attached to the surfaces of the multiple rollers 210 will be brushed off by the brush strips 130. While the multiple first roller bodies 110 are rotating, the vacuum generating device remains turned on. Under the action of the vacuum generating device, negative pressure is generated in the first vacuum chambers 111 of the multiple first roller bodies 110, causing suction forces to be generated at multiple first suction holes 112 on the outer walls of the multiple first roller bodies 110. As a result, the fine particles brushed off from the surface of the roller 210 can be sucked into the first vacuum chamber 111 by the multiple first suction holes 112, so as to achieve the cleaning effect on the fine particles on the surface of the roller 210. During the process of the multiple rollers 210 in the roller 210 conveyor conveying the raw material substrate, the fine particles attached to their surfaces can be removed in a timely manner, effectively preventing the fine particles attached to the surface of the roller 210 from transferring to the raw material substrate, which is beneficial to ensuring the coating quality of the raw material substrate.

[0040] In the embodiment of the present invention, the brush strips 130 wound around the outer wall of the first roller body 110 are spiral, so that a spiral channel is formed between the brush strips 130. During the process of the brush strips 130 cleaning the roller 210, some of the fine particles falling from the surface of the roller 210 can fall into the spiral channel and be sucked into the first vacuum chamber 111 by the first suction holes 112. Compared with a brush roller, the spiral brush strips 130 have a certain material discharging function, effectively preventing fine particles from accumulating on the bristles, enabling the first suction holes 112 to smoothly suck the fine particles into the first vacuum chamber 111.

[0041] Reference Figure 4 and Figure 7, the cleaning mechanism 100 further includes a first shielding plate 160. The length direction of the first shielding plate 160 is parallel to that of the first roller body 110. The first shielding plate 160 is disposed in the first vacuum chamber 111. The left and right ends of the first shielding plate 160 are respectively rotatably connected to the left and right inner side walls of the first vacuum chamber 111, so that the first shielding plate 160 remains stationary relative to the frame 200. The first shielding plate 160 is used to seal a plurality of first suction holes 112 on the lower half of the first roller body 110. The plurality of first suction holes 112 on the lower half of the first roller body 110 do not participate in sucking particles, so as to increase the suction force of the plurality of first suction holes 112 on the upper half of the first roller body 110. Each of the plurality of cleaning mechanisms 100 includes a first shielding plate 160. It can be understood that the length direction of the first shielding plate 160 is parallel to the left and right direction, and both the left and right ends of the first shielding plate 160 are rotatably connected to the left and right side walls of the first vacuum chamber 111. Since the first shielding plate 160 has a certain mass, during the rotation of the first roller body 110, the first roller body 110 will not drive the first shielding plate 160 to rotate, so that the first shielding plate 160 can remain stationary relative to the frame 200. During the rotation of the first roller body 110, the first shielding plate 160 always plays a role of shielding and sealing the plurality of first suction holes 112 on the lower half of the rotating first roller body 110, so that the plurality of first suction holes 112 on the lower half of the rotating first roller body 110 do not generate negative pressure.

[0042] When the operating power of the vacuum generating device remains unchanged, after the first shielding plate 160 shields and seals the plurality of first suction holes 112 on the lower half of the first roller body 110, the suction force of the plurality of first suction holes 112 on the upper half of the first roller body 110 will be enhanced, so that the suction force of the corresponding areas between the first roller body 110 and two adjacent rollers 210 is enhanced. Furthermore, the particles attached to the surface of the roller 210 can be more easily sucked into the first vacuum chamber 111 to achieve a better particle cleaning effect. On the other hand, the first shielding plate 160 can shield the plurality of first suction holes 112 on the lower half of the first roller body 110 that are not used for sucking particles, so that the suction area of the first roller body 110 is reduced. On the premise of achieving the same suction effect, the vacuum generating device can operate with a smaller power, reducing the energy consumption of the vacuum generating device to achieve the purpose of energy saving. In the embodiment of the present invention, referring to Figure 4 and Figure 7 , the first shielding plate 160 is a first arc plate, the radian of the first arc plate is 180°, the axis of the first arc plate coincides with the axis of the first roller body 110, and the first arc plate can swing in a circular motion around the axis of the first roller body 110.

[0043] In an embodiment of the present invention, a first spiral slot (not shown in the figure) is provided on the outer wall of the first roller body 110, and the brush strip 130 is clamped in the first spiral slot. It can be understood that the first spiral slot on the outer wall of the first roller body 110 is used for loading the brush strip 130. When the brush strip 130 on the outer wall of the first roller body 110 needs to be replaced, the installer can first pick out the old brush strip 130 from the first spiral slot to complete the disassembly of the old brush strip 130, and then gradually snap the new brush strip 130 into the first spiral slot along the extension direction of the first spiral slot, so that the brush strip 130 is in a spiral shape under the restriction of the first spiral slot to complete the installation of the brush strip 130. The brush strip 130 is installed in the first spiral slot by a clamping method, so that the installer can regularly replace the brush strip 130.

[0044] Reference Figures 1 to 3 , the cleaning mechanism 100 further includes a second roller body 120. The second roller body 120 is arranged below the first roller body 110 and is parallel to the first roller body 110. Both the left and right ends of the second roller body 120 are arranged on the frame 200. A second vacuum chamber 121 is formed inside the second roller body 120. A plurality of second suction holes 122 communicating with the second vacuum chamber 121 are formed on the outer wall of the second roller body 120. The second roller body 120 abuts against the brush strip 130. The vacuum generating device is used to make the second vacuum chamber 121 form a negative pressure, so that the fine particles attached to the brush strip 130 are sucked into the second vacuum chamber 121 through the second suction holes 122. In an embodiment of the present invention, each of the plurality of cleaning mechanisms 100 includes a second roller body 120, and the plurality of second roller bodies 120 are respectively arranged below the plurality of first roller bodies 110. The second vacuum chambers 121 are provided inside the plurality of second roller bodies 120, and the plurality of second roller bodies 120 are respectively arranged below the plurality of first roller bodies 110. The vacuum generating device can make the second vacuum chambers 121 inside the plurality of second roller bodies 120 all form a negative pressure.

[0045] Here, one of the cleaning mechanisms 100 will be described. Reference Figure 3It is understandable that, in the process of the brush strip 130 rotating to clean the particles on the surface of the roller 210, a small amount of particles will remain or reattach to the brush strip 130. The outer wall of the second roller body 120 abuts against the brush strip 130 on the outer wall of the first roller body 110. In the process of the first roller body 110 rotating, the vacuum generating device can form a negative pressure in the second vacuum chamber 121 in the second roller body 120, and the plurality of second suction holes 122 on the outer wall of the second roller body 120 generate suction force. Under the action of the multiple second suction holes 122, the particles attached to the brush strip 130 can be sucked into the second vacuum chamber 121 by the multiple second suction holes 122 to achieve a real-time cleaning effect on the brush strip 130, so that the brush strip 130 can always maintain a good cleaning state during the cleaning process of the roller 210, avoiding the particles attached to the brush strip 130 from being transferred to the surface of the roller 210 again, and further avoiding the particles on the surface of the roller 210 from being transferred to the original substrate, ensuring that the surface of the original substrate can reach a higher degree of cleanliness.

[0046] refer to Figure 2 and Figure 4 The cleaning mechanism 100 further includes a transmission assembly 150. Both left and right ends of the second roller body 120 are rotatably connected to the frame 200. The second roller body 120 is transmission-connected to the first roller body 110 through the transmission assembly 150, so that the second roller body 120 rotates following the first roller body 110, and the second roller body 120 rotates in the opposite direction to the first roller body 110. It can be understood that the first roller body 110 is transmission-connected to the second roller body 120 through the rotating assembly, so that the first roller body 110 can drive the second roller body 120 to rotate during the rotation process, and the second roller body 120 rotates in the opposite direction to the first roller body 110. In the embodiment of the present invention, the transmission assembly 150 includes a driving gear 151 and a driven gear 152. The driving gear 151 is provided on the first roller body 110, and the driven gear 152 is provided on the second roller body 120. The driving gear 151 and the driven gear 152 are meshed with each other. Specifically, the driving gear 151 is installed on the right side of the first roller body 110, and the driven gear 152 is installed on the right side of the second roller body 120. Under the action of the mutually meshing driving gear 151 and the driven gear 152, the first roller body 110 can drive the second roller body 120 to rotate in the opposite direction.

[0047] It can be understood that during the rotation of the first roller body 110, the second roller body 120 can also rotate following the first roller body 110 and in the opposite direction to the rotation direction of the first roller body 110. The opposite rotation direction of the second roller body 120 makes the relative movement speed between the brush strip 130 on the first roller body 110 and the surface of the second roller body 120 faster, increasing the frequency of the brush strip 130 being scraped by the outer wall of the second roller body 120. As a result, the particles can be separated from the brush strip 130 more quickly, which is beneficial to improving the cleaning effect of the second roller body 120 on the brush. On the other hand, when the particles are lifted by the brush, originally some particles may continue to move along the rotation direction of the first roller body 110 due to inertia and other reasons, resulting in these particles being easily out of the suction range of the second roller body 120. However, the reverse rotation of the second roller body 120 will apply a force to the particles in the opposite direction to the rotation direction of the first roller body 110, thereby changing the movement trajectory of the particles and making the particles closer to the surface of the second roller body 120. As a result, the particles are more easily sucked into the second vacuum chamber 121 through the second suction holes 122, which is beneficial to improving the cleaning effect of the second roller body 120 on the brush.

[0048] Reference Figure 4 , the cleaning mechanism 100 further includes a second shielding plate 170. The length direction of the second shielding plate 170 is parallel to the second roller body 120. The second shielding plate 170 is disposed in the second vacuum chamber 121. The left and right ends of the second shielding plate 170 are respectively rotatably connected to the left and right inner side walls of the second vacuum chamber 121, so that the second shielding plate 170 remains stationary relative to the frame 200. The second shielding plate 170 is used to seal a plurality of second suction holes 122 in the lower half of the second roller body 120, so as to increase the suction force of a plurality of second suction holes 122 in the upper half of the second roller body 120. In the embodiment of the present invention, the second shielding plate 170 is a second arc plate, the radian of the second arc plate is 180°, the axis of the second arc plate coincides with the axis of the second roller body 120, and the second arc plate can swing in a circular motion around the axis of the second roller body 120.

[0049] It can be understood that the length direction of the second baffle 170 is parallel to the left - right direction. Both the left and right ends of the second baffle 170 are rotatably connected to the left and right side walls of the second vacuum chamber 121. Since the second baffle 170 has a certain mass, during the rotation of the second roller 120, the second roller 120 will not drive the second baffle 170 to rotate, so that the second baffle 170 can remain stationary relative to the frame 200. During the rotation of the second roller 120, the second baffle 170 always plays a role of shielding and sealing for a plurality of second suction holes 122 in the lower half of the second roller 120, so that no negative pressure is generated in the plurality of second suction holes 122 in the lower half of the second roller 120. The role played by the second baffle 170 is similar to that played by the first baffle 160, which can enhance the suction force in the corresponding area between the second roller 120 and the first roller 110, so as to achieve a better cleaning effect of the brush strip 130, and also enable the vacuum generating device to operate with a smaller power to achieve the purpose of energy saving, which will not be elaborated further here. In the embodiment of the present invention, a first counterweight and a second counterweight can be added to the first baffle 160 and the second baffle 170 respectively to increase the overall mass of the first baffle 160 and the second baffle 170, so that the first baffle 160 and the second baffle 170 will not swing.

[0050] Reference Figures 2 to 4 and Figure 6 , the cleaning mechanism 100 further includes a scraping strip 140. The scraping strip 140 is wound around the outer wall of the second roller 120 and is spiral. The scraping strip 140 has a reverse helix direction to that of the brush strip 130, and the scraping strip 140 abuts against the brush strip 130 so that the scraping strip 140 can scrape off the particles attached to the brush strip 130. It can be understood that each of the plurality of cleaning mechanisms 100 includes a scraping strip 140. The plurality of scraping strips 140 are respectively wound around the outer walls of the plurality of second rollers 120, and the plurality of scraping strips 140 are all spiral, and the plurality of scraping strips 140 are respectively used to scrape off the particles attached to the plurality of brush strips 130.

[0051] Here, one of the cleaning mechanisms 100 will be described. Reference Figure 6, it can be understood that since the rotation directions of the first roller 110 and the second roller 120 are opposite, and the helix directions of the brush strip 130 and the scraping strip 140 are opposite, when the first roller 110 and the second roller 120 rotate, the relative movement between the brush strip 130 and the scraping strip 140 will be more intense, resulting in a shear force being formed between the scraping strip 140 and the brush strip 130. As a result, the scraping strip 140 can more effectively scrape off the particles attached to the brush strip 130, thereby achieving a better cleaning effect on the brush strip 130. On the other hand, the scraping strip 140 with opposite helix directions can be in full contact with the brush strip 130 along the length and circumferential direction of the brush strip 130, enabling the scraping strip 140 to scrape the brush strip 130 from various angles, ensuring that every part of the brush strip 130 can be cleaned without leaving any cleaning dead spots, and improving the cleaning effect on the brush strip 130. On the further hand, the scraping strip 140 with opposite helix directions can guide the scraped-off particles to move towards the surface of the second roller 120 during the scraping process, enabling the scraped-off particles to be sucked into the second vacuum chamber 121 by the second suction holes 122 on the surface of the second roller 120, so as to achieve the effect of removing the particles. It should be explained that within the area where the first roller 110 and the second roller 120 face each other, the scraping strip 140 scrapes the brush strip 130. Under the suction action of the second roller 120, the area where the first roller 110 and the second roller 120 face each other is a negative pressure area, enabling the particles scraped off from the brush strip 130 to be promptly sucked into the second vacuum chamber 121 by the multiple second suction holes 122 on the second roller 120, so as to achieve the effect of removing the particles.

[0052] In the embodiment of the present invention, a second spiral card slot (not shown in the figure) is provided on the outer wall of the second roller 120, and the scraping strip 140 is clamped in the second spiral card slot. In the embodiment of the present invention, the helix direction of the second spiral card slot is opposite to that of the first spiral card slot, and the scraping strip 140 is made of silica gel or rubber. It can be understood that the second spiral card slot on the outer wall of the second roller 120 is used for installing the scraping strip 140. When the scraping strip 140 needs to be replaced, the installer can first pick out the old scraping strip 140 from the second spiral card slot to complete the disassembly of the old scraping strip 140, and then gradually insert the new scraping strip 140 into the second spiral card slot along the extension direction of the second spiral card slot, so that the brush strip 130 is in a spiral shape under the limiting action of the second spiral card slot, thereby completing the installation of the brush strip 130. The scraping strip 140 is installed in the second spiral card slot by a clamping method, which is convenient for the installer to replace the scraping strip 140 regularly.

[0053] Reference Figure 8, as another embodiment of the present invention, a plurality of negative pressure holes communicating with the second vacuum chamber 121 are formed on the inner wall of the second spiral card slot. The plurality of negative pressure holes are distributed along the extending direction of the second spiral card slot. A vacuum groove 141 is provided on the scraping strip 140. The vacuum groove 141 extends along the extending direction of the scraping strip 140. The vacuum groove 141 communicates with the second vacuum chamber 121 through a plurality of negative pressure holes. The scraping strip 140 has a scraping surface 143. The scraping strip 140 abuts against the brush strip 130 through the scraping surface 143. A plurality of third suction holes 142 are provided on the scraping surface 143. The plurality of third suction holes 142 are distributed along the extending direction of the scraping strip 140. The plurality of third suction holes 142 are all communicated with the vacuum groove 141, so that the fine particles attached to the brush strip 130 can be sucked into the second vacuum chamber 121 by the plurality of third suction holes 142. The scraping strip 140 has a scraping surface 143 for abutting against the brush strip 130. A plurality of third suction holes 142 distributed along the extending direction of the scraping strip 140 are provided on the scraping surface 143. The plurality of third suction holes 142 are communicated with the second vacuum chamber 121 through the vacuum groove 141 and a plurality of negative pressure holes. After the second vacuum chamber 121 forms a negative pressure, the plurality of third suction holes 142 can all form a negative pressure and generate a suction force.

[0054] It can be understood that a plurality of third suction holes 142 for sucking fine particles are evenly distributed on the scraping surface 143 of the scraping strip 140. During the process of the scraping strip 140 scraping the brush strip 130, the fine particles attached to the brush strip 130 are just scraped off and then sucked into the second vacuum chamber 121 by the plurality of third suction holes 142, so as to reduce the chance of the fine particles suspending in the air or reattaching to the brush, the first roller 110, the second roller 120, the drum 210 or other parts of the equipment, which is beneficial to improving the collection efficiency of the second roller 120 for the fine particles and also improving the cleaning effect of the second roller 120 on the brush strip 130. On the other hand, the plurality of third suction holes 142 are spirally distributed along the extending direction of the scraping strip 140, so that the plurality of third suction holes 142 can evenly suck the fine particles along the entire length of the brush strip 130, effectively avoiding the situation that the local cleaning effect of the brush strip 130 is good and the local cleaning effect is poor, making the cleaning process of the brush strip 130 more uniform and stable, and improving the cleaning effect of the scraping strip 140 on the brush strip 130.

[0055] In the embodiment of the present invention, with reference to Figure 3 and Figure 4, first end caps and second end caps are respectively provided at the left and right ends of multiple first roller bodies 110. The left ends of multiple first roller bodies 110 are all rotatably connected to the frame 200 through the first end caps, and the right ends of multiple first roller bodies 110 are all rotatably connected to the frame 200 through the second end caps. First vacuum tubes communicating with the first vacuum chambers 111 are provided on multiple first end caps, and multiple first vacuum tubes are all communicated with the output end of the vacuum generating device through first vacuum rotary joints, so that the vacuum generating device can simultaneously make the first vacuum chambers 111 in multiple first roller bodies 110 form negative pressure. Here, one of the first roller bodies 110 is used for illustration. The opposite sides of the first end cap and the second end cap are equivalent to the left and right inner side walls of the first vacuum chamber 111. First bearings are provided on the opposite sides of the first end cap and the second end cap. Both first bearings are arranged in the first vacuum chamber 111. The axes of both first bearings coincide with the axis of the first roller body 110. The outer rings of both first bearings are respectively fixedly connected to the first end cap and the second end cap. The first baffle 160 is arranged in the first vacuum chamber 111 in the first roller body 110. The inner rings of both first bearings are respectively connected to the left and right ends of the first baffle 160, so that the rotating first roller body 110 cannot drive the first baffle 160 to rotate.

[0056] , third end caps and fourth end caps are respectively provided at the left and right ends of multiple second roller bodies 120. The left ends of multiple second roller bodies 120 are all rotatably connected to the frame 200 through the third end caps, and the right ends of multiple second roller bodies 120 are all rotatably connected to the frame 200 through the fourth end caps. Second vacuum tubes communicating with the second vacuum chambers 121 are provided on multiple third end caps, and multiple second vacuum tubes are all communicated with the output end of the vacuum generating device through second vacuum rotary joints, so that the vacuum generating device can simultaneously make the second vacuum chambers 121 in multiple second roller bodies 120 form negative pressure. Here, one of the second roller bodies 120 is used for illustration. The opposite sides of the third end cap and the fourth end cap are equivalent to the left and right inner side walls of the second vacuum chamber 121. Second bearings are provided on the opposite sides of the third end cap and the fourth end cap. Both second bearings are arranged in the second vacuum chamber 121. The axes of both second bearings coincide with the axis of the second roller body 120. The outer rings of both second bearings are respectively fixedly connected to the third end cap and the fourth end cap. The second baffle 170 is arranged in the second vacuum chamber 121 in the second roller body 120. The inner rings of both second bearings are respectively connected to the left and right ends of the second baffle 170, so that the rotating second roller body 120 cannot drive the second baffle 170 to rotate.

[0057] In an embodiment of the present invention, the output end of the vacuum generating device is simultaneously connected to the first vacuum chambers 111 in multiple first rollers 110 and the second vacuum chambers 121 in multiple second rollers 120, so that after the vacuum generating device is started, negative pressures are simultaneously formed in the multiple first vacuum chambers 111 and the multiple second vacuum chambers 121. The vacuum generating device includes a first vacuum generating mechanism, a second vacuum generating mechanism, a first filter, and a second filter. The first vacuum generating mechanism is connected to the first vacuum chambers 111 in the multiple first rollers 110 through the first filter, so that the first vacuum generating mechanism can simultaneously form negative pressures in the first vacuum chambers 111 in the multiple first rollers 110. The first filter is used to collect and filter the particles sucked into the multiple first vacuum chambers 111 to prevent the particles from entering the first vacuum generating mechanism. The second vacuum generating mechanism is connected to the second vacuum chambers 121 in the multiple second rollers 120 through the second filter, so that the second vacuum generating mechanism can simultaneously form negative pressures in the second vacuum chambers 121 in the multiple second rollers 120. The second filter is used to collect and filter the particles sucked into the multiple second vacuum chambers 121 to prevent the particles from entering the second vacuum generating mechanism. The second vacuum generating mechanism is used to form negative pressures in the second vacuum chambers 121 in the multiple second rollers 120. The vacuum generating device is a common device for evacuating, and the first filter, the second filter, the first vacuum rotary joint, and the second vacuum rotary joint are common connecting components, which will not be further described here.

[0058] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0059] Certainly, the present invention is not limited to the above-described embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A roller conveyor with self-cleaning function, characterized in that: include: frame; A plurality of rollers, both left and right ends of the plurality of rollers are rotatably connected to the frame, the plurality of rollers are distributed along the front-to-back direction, and an installation station is provided in the lower area between any two adjacent rollers; A first driving device is used to drive the plurality of rollers to rotate so that the plurality of rollers transport the raw material substrate from the back to the front; A plurality of cleaning mechanisms, each comprising a plurality of first roller bodies and a plurality of brush strips, the left and right ends of the plurality of first roller bodies are rotatably connected to the frame, the plurality of first roller bodies are respectively arranged at the plurality of installation stations, a first vacuum chamber is formed in the plurality of first roller bodies, a plurality of first suction holes connected to the first vacuum chamber are arranged on the outer walls of the plurality of first roller bodies, a first spiral groove is arranged on the outer walls of the plurality of first roller bodies, the plurality of brush strips are respectively clamped in the plurality of first spiral grooves and are all spiral, and the brush strips are simultaneously against two adjacent rollers; A second driving device is used to drive the plurality of first rollers to rotate, the first rollers and the drums to rotate in opposite directions, so that the plurality of brush strips can brush away the particles attached to the plurality of rollers; A vacuum generating device, used for forming negative pressure in the plurality of first vacuum chambers, so that particles falling from the roller can be sucked into the first vacuum chambers by the first suction holes; The cleaning mechanism also includes a first baffle plate and a second roller body, the length direction of the first baffle plate is parallel to the first roller body, the first baffle plate is arranged in the first vacuum chamber, the left and right ends of the first baffle plate are respectively rotatably connected to the left and right inner walls of the first vacuum chamber, so that the first baffle plate remains stationary relative to the frame, the first baffle plate is used to seal the multiple first suction holes on the lower half of the first roller body to increase the suction force of the multiple first suction holes on the upper half of the first roller body, the second roller body is arranged below the first roller body, the left and right ends of the second roller body are both arranged on the frame, a second vacuum chamber is formed in the second roller body, and a plurality of second suction holes connected to the second vacuum chamber are opened on the outer wall of the second roller body, the second roller body is against the brush strip, and the vacuum generating device is used to form a negative pressure in the second vacuum chamber, so that the particles attached to the brush strip are sucked into the second vacuum chamber by the second suction holes.

2. The roller conveyor with self-cleaning function according to claim 1, characterized in that: The cleaning mechanism also includes a transmission assembly, and both left and right ends of the second roller are rotatably connected to the frame. The second roller is transmission-connected to the first roller through the transmission assembly so that the second roller rotates with the first roller, and the second roller rotates in the opposite direction to the first roller.

3. The roller conveyor with self-cleaning function according to claim 2, characterized in that: The transmission assembly comprises a driving gear and a driven gear, wherein the driving gear is arranged on the first roller body, and the driven gear is arranged on the second roller body, and the driving gear and the driven gear are meshed with each other.

4. The roller conveyor with self-cleaning function according to claim 2, characterized in that: The cleaning mechanism also includes a second baffle plate, the length direction of the second baffle plate is parallel to the second roller body, the second baffle plate is arranged in the second vacuum chamber, the left and right ends of the second baffle plate are rotatably connected to the left and right inner walls of the second vacuum chamber respectively, so that the second baffle plate remains stationary relative to the frame, and the second baffle plate is used to seal the multiple second suction holes on the lower half of the second roller body to increase the suction force of the multiple second suction holes on the upper half of the second roller body.

5. The roller conveyor with self-cleaning function according to claim 2, characterized in that: The cleaning mechanism also includes a scraping bar, which is spirally wound around the outer wall of the second roller body. The scraping bar has an opposite rotation direction to the brush bar. The second roller body is pressed against the brush bar through the scraping bar so that the scraping bar can scrape off the particles attached to the brush bar.

6. The roller conveyor with self-cleaning function according to claim 5, characterized in that: A second spiral groove is provided on the outer wall of the second roller body, and the scraper strip is clamped in the second spiral groove.

7. The roller conveyor with self-cleaning function according to claim 6, characterized in that: A plurality of negative pressure holes connected to the second vacuum chamber are provided on the inner wall of the second spiral groove, and the plurality of negative pressure holes are distributed along the extension direction of the second spiral groove. A vacuum groove is provided on the scraper strip, and the vacuum groove extends along the extension direction of the scraper strip. The vacuum groove is connected to the second vacuum chamber through the plurality of negative pressure holes. The scraper strip has a scraping surface, and the scraper strip is abutted against the brush strip through the scraping surface. A plurality of third suction holes are provided on the scraping surface, and the plurality of third suction holes are distributed along the extension direction of the scraper strip. The plurality of third suction holes are all connected to the vacuum groove, so that the particles attached to the brush strip can be sucked into the second vacuum chamber by the plurality of third suction holes.

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