Roller conveyor with self-cleaning function

Abstract

The invention discloses a roller conveyor with a self-cleaning function, which relates to the technical field of transportation equipment and comprises a rack and a plurality of rollers. Each cleaning mechanism comprises a plurality of first roller bodies and a plurality of brush strips, first vacuum cavities are formed in the first roller bodies, a plurality of first suction holes communicating with the first vacuum cavities are formed in the outer walls of the first roller bodies, and the brush strips are arranged on the outer walls of the first roller bodies in a winding mode and are in a spiral shape; the brush strips abut against the two adjacent rollers at the same time. The second driving device is used for driving the multiple first roller bodies to rotate, so that the multiple brush strips can brush away particles attached to the multiple rollers; and the vacuum generating device is used for enabling the plurality of first vacuum cavities to form negative pressure. The particles attached to the surfaces of the rollers can be removed in time, so that the particles attached to the surfaces of the rollers are effectively prevented from being transferred to the raw material substrate, and the coating quality of the raw material substrate is guaranteed.

Description

Technical Field

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

[0002] In the manufacturing process of liquid crystal display screens, the raw substrate of the liquid crystal display screen needs to be coated so that the raw substrate can have specific functions and performance. At present, roller conveyors are often used to convey raw substrates. During the long-term use of roller conveyors, particles are easily attached to the surface of the rollers in the roller conveyors, and the particles attached to the surface of the rollers are easily transferred to the raw substrates. The coating process has high requirements for the cleanliness of the raw substrates. Once the raw substrates are contaminated with particles, the coating layer is prone to defects, thereby reducing the coating quality of the raw substrates. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a roller conveyor with a self-cleaning function, which can remove particles attached to the surface of the roller to prevent the particles on the surface of the roller from being transferred to the raw material substrate, thereby facilitating the coating quality of the raw material substrate.

[0004] According to an embodiment of the present invention, a roller conveyor with a self-cleaning function includes a frame, a first driving device, a second driving device, a vacuum generating device, a plurality of rollers, and a plurality of cleaning mechanisms. The 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, the plurality of rollers are used to support the raw material substrate, and the lower area between any two adjacent rollers is provided with an installation station; the first driving device is used to drive the plurality of rollers to rotate so that the plurality of rollers convey the raw material substrate from back to front; the plurality of cleaning mechanisms include 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 provided in the plurality of installation stations, a first vacuum chamber is formed in the plurality of first roller bodies, and the plurality of brush strips are provided in the plurality of first roller bodies. The outer wall of the first roller body is provided with a plurality of first suction holes connected with the first vacuum chamber, and the plurality of brush strips are respectively arranged on the outer walls of the plurality of first roller bodies and are all spirally shaped, and the brush strips are simultaneously against two adjacent rollers; the second driving device is used to drive the plurality of first roller bodies to rotate, and the first roller body and the roller rotate in opposite directions, so that the plurality of brush strips can brush off the particles attached to the plurality of rollers; the vacuum generating device is used to form a negative pressure in the plurality of first vacuum chambers, so that the particles falling from the rollers can be sucked into the first vacuum chamber by the first suction holes.

[0005] At least the following beneficial effects are achieved: 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] According to the roller conveyor with self-cleaning function of 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 are meshed with each other.

[0011] According to the roller conveyor with self-cleaning function of an embodiment of the present invention, 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 respectively rotatably connected to the left and right inner walls of the second vacuum chamber to keep the second baffle plate 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.

[0012] According to the roller conveyor with self-cleaning function of an embodiment of the present invention, the cleaning mechanism also includes a scraper bar, which is wound around the outer wall of the second roller body and is spirally shaped. The scraper bar has an opposite rotation direction to the brush bar, and the second roller body is abutted against the brush bar through the scraper bar so that the scraper bar can scrape off the particles attached to the brush bar.

[0013] According to the roller conveyor with self-cleaning function of the embodiment of the present invention, a second spiral groove is provided on the outer wall of the second roller body, and the scraper strip is mounted in the second spiral groove.

[0014] According to the roller conveyor with self-cleaning function of an embodiment of the present invention, a plurality of negative pressure holes connected to the second vacuum chamber are opened 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 bar, and the vacuum groove extends along the extension direction of the scraper bar. The vacuum groove is connected to the second vacuum chamber through the plurality of negative pressure holes. The scraper bar has a scraping surface, and the scraper bar is abutted against the brush bar 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 bar. The plurality of third suction holes are all connected to the vacuum groove, so that the particles attached to the brush bar can be sucked into the second vacuum chamber by the plurality of third suction holes.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is a structural schematic diagram of a roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3 It is a structural schematic diagram of a cleaning mechanism and two adjacent rollers in a roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the internal structure of the first roller body and the second roller body in the roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure 5 A side view schematic diagram of the cooperation between multiple rollers and multiple cleaning structures in a roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure 6 A side view schematic diagram of a first roller body and a second roller body in a roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure 7 It is a schematic structural diagram of a first shielding plate in a roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure 8 It is a structural schematic diagram of another embodiment of a scraper strip in a roller conveyor with a self-cleaning function according to an embodiment of the present invention; Figure Number: 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 bar 130; scraping bar 140; vacuum groove 141; third suction hole 142; scraping surface 143; transmission assembly 150; driving gear 151; driven gear 152; first shielding plate 160; second shielding plate 170; Frame 200; Roller 210; The first driving device 300 . DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] 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 cause the surface of the roller to gradually wear out, 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 easy 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 produce particles and adhere to the surface of the roller. In 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 destroy the continuity and integrity of the coating layer, thereby reducing the coating quality of the raw material substrate, and even causing the display effect of the produced LCD screen to have problems such as uneven brightness and color deviation.

[0021] refer to 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.

[0022] The left and right ends of the plurality of rollers 210 are rotatably connected to the frame 200, and the plurality of rollers 210 are distributed along the front-to-back direction. The plurality of rollers 210 are used to support the raw material substrate, and the frame 200 is provided with an installation station in the lower area between any two adjacent rollers 210; the first driving device 300 is used to drive the plurality of rollers 210 to rotate so that the plurality of rollers 210 transport the raw material substrate from the back to the front; the plurality of cleaning mechanisms 100 include a plurality of first roller bodies 110 and a plurality of brush strips 130, the left and right ends of the plurality of first roller bodies 110 are rotatably connected to the frame 200, and the plurality of first roller bodies 110 are respectively arranged at a plurality of installation stations, and a first vacuum chamber 111 is formed in the plurality of first roller bodies 110, and the plurality of first roller bodies 110 are provided at a plurality of installation stations. A plurality of first suction holes 112 connected to the first vacuum chamber 111 are provided on the outer walls of the first roller bodies 110, and a plurality of brush strips 130 are respectively arranged on the outer walls of the plurality of first roller bodies 110 and are all spirally shaped. The plurality of first roller bodies 110 are simultaneously abutted against two adjacent rollers 210 through the brush strips 130; the second driving device is used to drive the plurality of first roller bodies 110 to rotate, and the first roller bodies 110 and the rollers 210 rotate in opposite directions, so that the plurality of brush strips 130 can brush off the particles attached to the plurality of rollers 210; the vacuum generating device is used to form a negative pressure in the plurality of first vacuum chambers 111, so that the particles falling from the rollers 210 can be sucked into the first vacuum chamber 111 by the first suction holes 112.

[0023] In the embodiment of the present invention, the length direction of the roller 210 is parallel to the left-right direction, and the first driving device 300 includes a first motor, a first chain and a plurality of first sprockets. The first motor is connected to the frame 200, and the plurality of first sprockets are respectively connected to the left ends of the plurality of rollers 210. The first chain is wound around the plurality of first sprockets. The first motor can drive one of the first sprockets to rotate, and the first chain and the plurality of first sprockets can rotate synchronously, so that the plurality of rollers 210 can rotate synchronously, and the rollers 210 can transport the raw material substrate from the back to the front. The first driving device 300 is a common chain sprocket driving device, which will not be further described here.

[0024] refer to Figure 5The area below any two adjacent rollers 210 is provided with an installation station for installing the first roller body 110. The cleaning mechanisms 100 each include 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 arranged below two adjacent rollers 210. The outer walls of the plurality of first roller bodies 110 are each wound with a spiral brush strip 130 (that is, the outer walls of the plurality of first roller bodies 110 are each wound with a brush strip 130 in a spiral shape), and the outer walls of the plurality of first roller bodies 110 are simultaneously against the surfaces of the two adjacent rollers 210 through the brush strips 130. The plurality of first roller bodies 110 are each formed with a first vacuum chamber 111, and the outer walls of the plurality of first roller bodies 110 are each provided with a plurality of first suction holes 112 connected with the first vacuum chamber 111. The vacuum generating device is disposed on the frame 200, and the vacuum generating device is simultaneously connected to the first vacuum chambers 111 on the plurality of first roller bodies 110. After the vacuum generating device is started, the first vacuum chambers 111 on the plurality of first roller bodies 110 will form negative pressure, which can generate negative pressure in the plurality of first suction holes 112 on the plurality of first roller bodies 110, so that the first suction holes 112 have suction force.

[0025] 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. The second chain and the plurality of second sprockets can rotate synchronously, which can make the plurality of first roller bodies 110 rotate synchronously, and further make the roller 210 transport the raw material substrate from the back to the front. The second driving device is a common chain sprocket driving device, which will not be further described here.

[0026] It is understandable that, in the process of the plurality of rollers 210 conveying the raw material substrate, the second driving device drives the plurality of first rollers 110 to rotate. Since the outer walls of the plurality of first rollers 110 are all wound with spiral brush strips 130, and the brush strips 130 are simultaneously against two adjacent rollers 210, the particles attached to the surfaces of the plurality of rollers 210 will be brushed away by the brush strips 130 under the brushing action of the plurality of brush strips 130. While the plurality of first rollers 110 are rotating, the vacuum generating device remains turned on. Under the action of the vacuum generating device, the first vacuum chambers 111 in the plurality of first rollers 110 will all generate negative pressure, so that the plurality of first suction holes 112 on the outer walls of the plurality of first rollers 110 will all generate suction force, and the particles brushed off from the surface of the rollers 210 can be sucked into the first vacuum chamber 111 by the plurality of first suction holes 112, so as to achieve the cleaning effect of the particles on the surface of the rollers 210. The particles attached to the surfaces of the multiple rollers 210 in the roller conveyor 210 can be promptly removed during the process of conveying the raw substrate, which effectively prevents the particles attached to the surfaces of the rollers 210 from being transferred to the raw substrate, thereby facilitating ensuring the coating quality of the raw substrate.

[0027] In the embodiment of the present invention, the brush strips 130 wound around the outer wall of the first roller body 110 are spirally shaped, so that a spiral channel is formed between the brush strips 130. When the brush strips 130 clean the roller 210, some 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 hole 112. Compared with the brush roller, the spiral brush strips 130 have a certain discharge function, which effectively prevents particles from accumulating on the bristles, so that the first suction hole 112 can smoothly suck the particles into the first vacuum chamber 111.

[0028] refer to Figure 4 and Figure 7The cleaning mechanism 100 further includes a first shielding plate 160, the length direction of which is parallel to the first roller body 110, and 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 the multiple first suction holes 112 on the lower half of the first roller body 110, and the multiple 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 multiple first suction holes 112 on the upper half of the first roller body 110. Multiple cleaning mechanisms 100 all include the first shielding plate 160. It can be understood that the length direction of the first shielding plate 160 is parallel to the left-right direction, and 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, the first roller body 110 will not drive the first shielding plate 160 to rotate during the rotation of the first roller body 110, 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 shielding and sealing role for the multiple first suction holes 112 in the lower half of the rotating first roller body 110, so that the multiple first suction holes 112 in the lower half of the rotating first roller body 110 will not generate negative pressure.

[0029] When the operating power of the vacuum generating device remains unchanged, after the first baffle plate 160 blocks and seals the multiple first suction holes 112 in the lower half of the first roller body 110, the suction force of the multiple first suction holes 112 in the upper half of the first roller body 110 will be enhanced, thereby enhancing the suction force in the corresponding areas of the first roller body 110 and the two adjacent rollers 210, thereby making it easier for the particles attached to the surface of the roller 210 to be sucked into the first vacuum chamber 111, so as to achieve a better particle cleaning effect. On the other hand, the first baffle plate 160 can block the multiple first suction holes 112 in the lower half of the first roller body 110 that are not used to suck particles, so as to reduce the suction area of ​​the first roller body 110. Under the premise of achieving the same suction effect, the vacuum generating device can operate at a lower power, thereby reducing the energy consumption of the vacuum generating device, so as to achieve the purpose of energy saving. In the embodiment of the present invention, reference Figure 4 and Figure 7 The first shielding plate 160 is a first arc plate, the arc 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 circle around the axis of the first roller body 110 .

[0030] In the embodiment of the present invention, a first spiral groove (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 groove. It can be understood that the first spiral groove 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 pull out the old brush strip 130 from the first spiral groove to complete the disassembly of the old brush strip 130, and then gradually clamp the new brush strip 130 into the first spiral groove along the extension direction of the first spiral groove, so that the brush strip 130 is spiral under the restriction of the first spiral groove, so as to complete the installation of the brush strip 130. The brush strip 130 is installed in the first spiral groove by clamping, so that the installer can replace the brush strip 130 regularly.

[0031] refer to Figures 1 to 3 The cleaning mechanism 100 further includes a second roller body 120, which is disposed below the first roller body 110 and is parallel to the first roller body 110. Both left and right ends of the second roller body 120 are disposed on the frame 200. A second vacuum chamber 121 is formed in 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 bar 130. The vacuum generating device is used to form a negative pressure in the second vacuum chamber 121, so that the particles attached to the brush bar 130 are sucked into the second vacuum chamber 121 by the second suction holes 122. In the embodiment of the present invention, the plurality of cleaning mechanisms 100 all include the second roller body 120, and the plurality of second roller bodies 120 are respectively disposed below the plurality of first roller bodies 110. The second vacuum chambers 121 are all provided in the plurality of second roller bodies 120 . The plurality of second roller bodies 120 are respectively arranged below the plurality of first roller bodies 110 . The vacuum generating device can form negative pressure in the second vacuum chambers 121 in the plurality of second roller bodies 120 .

[0032] Here, one of the cleaning mechanisms 100 is used for illustration. 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.

[0033] 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.

[0034] It is understandable that during the rotation of the first roller 110, the second roller 120 can also rotate with the first roller 110 and in the opposite direction of the first roller 110. The opposite rotation direction of the second roller 120 makes the relative movement speed between the brush strip 130 on the first roller 110 and the surface of the second roller 120 faster, so that the brush strip 130 is scraped by the outer wall of the second roller 120 more frequently, thereby making the particles detach from the brush strip 130 more quickly, which is beneficial to improving the cleaning effect of the second roller 120 on the brush. On the other hand, after the particles are carried by the brush, some of the particles may continue to move along the rotation direction of the first roller 110 due to inertia and other reasons, causing these particles to easily escape from the suction range of the second roller 120. However, the reverse rotation of the second roller 120 will cause the particles to be subjected to a force in the opposite direction to the rotation direction of the first roller 110, thereby changing the movement trajectory of the particles, allowing the particles to be closer to the surface of the second roller 120, and making it easier for the particles to be sucked into the second vacuum chamber 121 by the second suction hole 122, which is beneficial to improving the cleaning effect of the second roller 120 on the brush.

[0035] refer to Figure 4 The cleaning mechanism 100 further includes a second shielding plate 170, the length direction of which 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, and the second shielding plate 170 is used to seal the plurality of second suction holes 122 on the lower half of the second roller body 120, so as to increase the suction force of the plurality of second suction holes 122 on 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 arc 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 circle around the axis of the second roller body 120.

[0036] It can be understood that the length direction of the second shielding plate 170 is parallel to the left-right direction, and the left and right ends of the second shielding plate 170 are rotatably connected to the left and right side walls of the second vacuum chamber 121. Since the second shielding plate 170 has a certain mass, the second roller body 120 will not drive the second shielding plate 170 to rotate during the rotation of the second roller body 120, so that the second shielding plate 170 can remain stationary relative to the frame 200. During the rotation of the second roller body 120, the second shielding plate 170 always plays a shielding and sealing role for the multiple second suction holes 122 in the lower half of the second roller body 120, so that the multiple second suction holes 122 in the lower half of the second roller body 120 will not generate negative pressure. The second shielding plate 170 plays a similar role to the first shielding plate 160, which can enhance the suction force of the corresponding area of ​​the second roller body 120 and the first roller body 110 to achieve a better cleaning effect of the brush strip 130, and also enable the vacuum generating device to operate at a lower power to achieve the purpose of energy saving, which will not be further described here. In the embodiment of the present invention, a first counterweight and a second counterweight can be added to the first shielding plate 160 and the second shielding plate 170 respectively to increase the overall mass of the first shielding plate 160 and the second shielding plate 170, so that the first shielding plate 160 and the second shielding plate 170 will not swing.

[0037] refer to Figures 2 to 4 and Figure 6 The cleaning mechanism 100 further includes a scraper bar 140, which is wound around the outer wall of the second roller body 120 and is in a spiral shape. The scraper bar 140 and the brush bar 130 have opposite rotation directions, and the scraper bar 140 and the brush bar 130 are opposed to each other, so that the scraper bar 140 can scrape off the particles attached to the brush bar 130. It can be understood that multiple cleaning mechanisms 100 all include scraper bars 140, and multiple scraper bars 140 are respectively wound around the outer walls of multiple second roller bodies 120, and multiple scraper bars 140 are all in a spiral shape, and multiple scraper bars 140 are respectively used to scrape off the particles attached to the multiple brush bars 130.

[0038] Here, one of the cleaning mechanisms 100 is used for illustration. Figure 6It is understandable that, since the first roller 110 and the second roller 120 rotate in opposite directions, and the brush bar 130 and the scraper bar 140 rotate in opposite directions, when the first roller 110 and the second roller 120 rotate, the relative movement between the brush bar 130 and the scraper bar 140 will be more intense, so that a shear force is formed between the scraper bar 140 and the brush bar 130, thereby enabling the scraper bar 140 to more effectively scrape off the particles attached to the brush bar 130, so as to achieve a better cleaning effect on the brush bar 130. On the other hand, the scraper bar 140 with opposite rotation directions can fully contact the brush bar 130 along the length and circumference of the brush bar 130, so that the scraper bar 140 can scrape the brush bar 130 from all angles, ensuring that every part of the brush bar 130 can be cleaned, and there will be no cleaning dead corners, thereby improving the cleaning effect of the brush bar 130. On the other hand, the scraping strip 140 with the opposite rotation direction can guide the scraped particles to move toward the surface of the second roller body 120 during the scraping process, so that the scraped particles can be sucked into the second vacuum chamber 121 by the second suction holes 122 on the surface of the second roller body 120, so as to achieve the effect of removing the particles. It should be explained that in the area where the first roller body 110 and the second roller body 120 are opposite, the scraping strip 140 scrapes the brush strip 130. Under the suction action of the second roller body 120, the area where the first roller body 110 and the second roller body 120 are opposite is a negative pressure area, so that the particles scraped from the brush strip 130 can be sucked into the second vacuum chamber 121 by the multiple second suction holes 122 on the second roller body 120 in time, so as to achieve the effect of removing the particles.

[0039] In the embodiment of the present invention, a second spiral groove (not shown in the figure) is provided on the outer wall of the second roller body 120, and the scraper strip 140 is clamped in the second spiral groove. In the embodiment of the present invention, the second spiral groove is opposite to the first spiral groove in rotation direction, and the scraper strip 140 is made of silicone or rubber. It can be understood that the second spiral groove on the outer wall of the second roller body 120 is used for loading the scraper strip 140. When the scraper strip 140 needs to be replaced, the installer can first remove the old scraper strip 140 from the second spiral groove to complete the disassembly of the old scraper strip 140, and then gradually clamp the new scraper strip 140 into the second spiral groove along the extension direction of the second spiral groove, so that the brush strip 130 is spiral under the restriction of the second spiral groove, so as to complete the installation of the brush strip 130. The scraper strip 140 is installed in the second spiral groove by clamping, so that the installer can replace the scraper strip 140 regularly.

[0040] refer to Figure 8As another embodiment of the present invention, a plurality of negative pressure holes connected to the second vacuum chamber 121 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 141 is provided on the scraper bar 140, and the vacuum groove 141 extends along the extension direction of the scraper bar 140. The vacuum groove 141 is connected to the second vacuum chamber 121 through the plurality of negative pressure holes. The scraper bar 140 has a scraping surface 143, and the scraper bar 140 is against the brush bar 130 through the scraping surface 143. A plurality of third suction holes 142 are provided on the scraping surface 143, and the plurality of third suction holes 142 are distributed along the extension direction of the scraper bar 140. The plurality of third suction holes 142 are all connected to the vacuum groove 141, so that the particles attached to the brush bar 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, and the scraping surface 143 is provided with a plurality of third suction holes 142 distributed along the extension direction of the scraping strip 140, and the plurality of third suction holes 142 are connected to the second vacuum chamber 121 through the vacuum groove 141 and the plurality of negative pressure holes, so that after the second vacuum chamber 121 forms a negative pressure, the plurality of third suction holes 142 can form a negative pressure and generate a suction force.

[0041] It can be understood that a plurality of third suction holes 142 for sucking particles are evenly distributed on the scraping surface 143 of the scraper bar 140. In the process of the scraper bar 140 scraping the brush strip 130, the particles attached to the brush strip 130 are sucked into the second vacuum chamber 121 by the plurality of third suction holes 142 as soon as they are scraped off, so as to reduce the chances of the particles being suspended in the air or reattaching to the brush, the first roller body 110, the second roller body 120, the drum 210 or other parts of the equipment, which is beneficial to improving the collection efficiency of the second roller body 120 for particles, and also improving the cleaning effect of the second roller body 120 on the brush strip 130. On the other hand, the multiple third suction holes 142 are spirally distributed along the extension direction of the scraper strip 140, so that the multiple third suction holes 142 can evenly suck particles along the entire length of the brush strip 130, effectively avoiding the situation where the brush strip 130 has good local cleaning effect and poor local cleaning effect, making the cleaning process of the brush strip 130 more uniform and stable, and improving the cleaning effect of the scraper strip 140 on the brush strip 130.

[0042] In the embodiment of the present invention, reference Figure 3 and Figure 4, the left and right ends of the multiple first roller bodies 110 are respectively provided with a first end cap and a second end cap, the left ends of the multiple first roller bodies 110 are rotatably connected to the frame 200 through the first end cap, and the right ends of the multiple first roller bodies 110 are rotatably connected to the frame 200 through the second end cap, and the multiple first end caps are provided with a first vacuum tube connected to the first vacuum chamber 111, and the multiple first vacuum tubes are connected to the output end of the vacuum generating device through the first vacuum rotary joint, so that the vacuum generating device can simultaneously form a negative pressure in the first vacuum chamber 111 in the multiple first roller bodies 110. Here, one of the first roller bodies 110 is used for illustration, and the side opposite to the first end cap and the second end cap is equivalent to the left and right inner walls of the first vacuum chamber 111. A first bearing is provided on the opposite side of the first end cover and the second end cover, and the two first bearings are both arranged in the first vacuum chamber 111. The axes of the two first bearings coincide with the axis of the first roller body 110. The outer rings of the two first bearings are fixedly connected to the first end cover and the second end cover respectively. The first baffle plate 160 is arranged in the first vacuum chamber 111 in the first roller body 110, and the inner rings of the two first bearings are respectively connected to the left and right ends of the first baffle plate 160, so that the rotating first roller body 110 cannot drive the first baffle plate 160 to rotate.

[0043] The left and right ends of the plurality of second roller bodies 120 are respectively provided with a third end cap and a fourth end cap, the left ends of the plurality of second roller bodies 120 are rotatably connected to the frame 200 through the third end cap, the right ends of the plurality of second roller bodies 120 are rotatably connected to the frame 200 through the fourth end cap, the plurality of third end caps are provided with a second vacuum tube connected to the second vacuum chamber 121, and the plurality of second vacuum tubes are connected to the output end of the vacuum generating device through the second vacuum rotary joint, so that the vacuum generating device can simultaneously form a negative pressure in the second vacuum chamber 121 in the plurality of second roller bodies 120. Here, one of the second roller bodies 120 is used for illustration, and the side opposite to the third end cap and the fourth end cap is equivalent to the left and right inner walls of the second vacuum chamber 121. A second bearing is provided on the opposite side of the third end cover and the fourth end cover, and the two second bearings are both arranged in the second vacuum chamber 121. The axes of the two second bearings coincide with the axis of the second roller body 120. The outer rings of the two second bearings are respectively fixedly connected to the third end cover and the fourth end cover, and the second baffle plate 170 is arranged in the second vacuum chamber 121 in the second roller body 120. The inner rings of the two second bearings are respectively connected to the left and right ends of the second baffle plate 170, so that the rotating second roller body 120 cannot drive the second baffle plate 170 to rotate.

[0044] In the embodiment of the present invention, the output end of the vacuum generating device is simultaneously connected to the first vacuum chamber 111 in the plurality of first roller bodies 110 and the second vacuum chamber 121 in the plurality of second roller bodies 120, so that after the vacuum generating device is started, the plurality of first vacuum chambers 111 and the plurality of second vacuum chambers 121 simultaneously form negative pressure. 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 chamber 111 in the plurality of first roller bodies 110 through the first filter, so that the first vacuum generating mechanism can simultaneously form negative pressure in the first vacuum chamber 111 in the plurality of first roller bodies 110. The first filter is used to collect and filter particles sucked into the plurality of 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 plurality of second roller bodies 120 through the second filter, so that the second vacuum generating mechanism can simultaneously form negative pressure in the second vacuum chambers 121 in the plurality of second roller bodies 120, and the second filter is used to collect and filter the particles sucked into the plurality of 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 pressure in the second vacuum chambers 121 in the plurality of second roller bodies 120. The vacuum generating device is a common device for vacuuming, and the first filter, the second filter, the first vacuum rotary joint and the second vacuum rotary joint are common connecting parts, which will not be further described here.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0046] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications 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 cavity is formed in the plurality of first roller bodies, a plurality of first suction holes connected to the first vacuum cavity are arranged on the outer walls of the plurality of first roller bodies, the plurality of brush strips are respectively wound around the outer walls of the plurality of first roller bodies and are all spirally shaped, 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 drums; The vacuum generating device is used to form negative pressure in the plurality of the first vacuum chambers, so that the particles dropped from the roller can be sucked into the first vacuum chambers by the first suction holes.

2. The roller conveyor with self-cleaning function according to claim 1, characterized in that: The cleaning mechanism also includes a first baffle plate, the length direction of which 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 rotatably connected to the left and right inner walls of the first vacuum chamber respectively, so that the first baffle plate remains 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.

3. The roller conveyor with self-cleaning function according to claim 1, characterized in that: 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.

4. The roller conveyor with self-cleaning function according to claim 1, characterized in that: The cleaning mechanism also includes a second roller body, which is arranged below the first roller body, and 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.

5. The roller conveyor with self-cleaning function according to claim 4, 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.

6. The roller conveyor with self-cleaning function according to claim 5, 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.

7. The roller conveyor with self-cleaning function according to claim 5, 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.

8. The roller conveyor with self-cleaning function according to claim 5, 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.

9. The roller conveyor with self-cleaning function according to claim 8, 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.

10. The roller conveyor with self-cleaning function according to claim 9, 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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