Polishing and glue spraying system for board veneer pasting

Abstract

A polishing and glue spraying system for plate veneer pasting comprises a plate polishing and cleaning device (100) and a glue spraying device (101) which are sequentially arranged from front to back, the glue spraying device (101) comprises a rack (20), a through conveyor (21) is arranged below the rack (20), and a plate centering device and a glue spraying assembly are arranged on the rack (20) located above the conveyor (21). The utility model has the advantages that: (1) the two sides of the plate are simultaneously polished and the dust is cleaned, the processing efficiency is greatly improved, the surface of the polished plate is deeply cleaned through the cleaning roller brush, the dust can be effectively prevented from being adhered to the surface of the plate, and the subsequent veneer adhesion quality is guaranteed; (2) a pair of transverse centering plates and a pair of longitudinal centering plates respectively clamp the side edges of the plate from the outer side to center the plate, and protect equipment around the plate, so that glue mist escaping from the side edges is prevented from being attached to the equipment during glue spraying, and meanwhile, the glue spraying precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate processing, in particular to a grinding and glue spraying system for plate veneer pasting. Background Art

[0002] Veneer is a surface material used for interior decoration or furniture manufacturing, which is made by slicing natural wood or technical wood into thin slices of a certain thickness, adhering them to the surface of the board, and then hot pressing. The existing veneer pasting process is to polish and clean the board surface, spray glue, and press it with a hot press.

[0003] The following problems arise during the manufacturing process: ① Existing pretreatment of the board surface is mostly single-sided grinding, that is, after grinding one side of the board, it needs to be turned over to grind the other side, which is inefficient. At the same time, the dust generated during the grinding process is cleaned by a dust suction device. In order to improve the adhesion between the board and the finish, the surface of the board after grinding is not mirror-like, so some dust will adhere to the surface of the board and cannot be cleaned. When the finish is pasted, it is easy to have local instability and cause the glue to delaminate. ② Board glue spraying is mostly sprayed on the board surface through a nozzle while the board is moving. During the spraying process, glue mist will escape from the side of the board. The glue mist adheres to the equipment and is difficult to clean, causing certain problems for the normal operation of the equipment. Utility Model Content

[0004] The purpose of the present invention is to provide a polishing and gluing system for plate surface pasting in order to overcome the above-mentioned deficiencies.

[0005] The utility model comprises a plate grinding and cleaning device and a glue spraying device which are arranged in sequence from front to back.

[0006] The plate grinding and cleaning device includes a box body and a conveyor roller. The front end of the box body is provided with a feed port, and the rear end of the box body is provided with a discharge port. The conveyor roller runs through both ends of the feed port and the discharge port of the box body. The box bodies located on the upper and lower sides of the conveyor roller are provided with grinding and cleaning components. The grinding and cleaning components include grinding rollers and cleaning roller brushes arranged in sequence from the feed port to the discharge port. A dust collector is provided on one side of the box body. The box bodies located on the upper and lower sides of the conveyor roller are provided with dust suction heads that are connected to the air inlet of the dust collector.

[0007] The glue spraying device comprises a frame, a conveyor is provided below the frame, and a plate centering device and a glue spraying assembly are respectively provided on the frame above the conveyor.

[0008] A pair of sealing brushes are provided on the feed port and the discharge port of the box body, and the pair of sealing brushes are symmetrically arranged in an upper and lower direction.

[0009] A plate pressing assembly is provided on the feed port and the discharge port of the box body. The plate pressing assembly includes a connecting shaft and a connecting shaft mounting frame. A plurality of pressing rollers are provided on the connecting shaft. Adjustment sliders are provided at both ends of the connecting shaft mounting frame, and a tightening spring is provided between the adjustment slider and the connecting shaft mounting frame. The two ends of the connecting shaft are movably connected to the corresponding adjustment sliders through bearings.

[0010] Each grinding and cleaning assembly has two cleaning roller brushes, and the two cleaning roller brushes are movably installed in the box body through a pair of lifting cylinders; dust collecting covers are provided at the upper and lower ends of the box body, and the dust collecting cover is assembled by a group of semicircular covers that are coaxial with the grinding roller and the cleaning roller brush respectively. A slag discharge port is provided at the bottom of the dust collecting cover located below, and a slag hopper connected to the slag discharge port is provided on the inner side of one end of the bottom of the box body, and the slag discharge pipe of the dust collector is connected to the slag hopper.

[0011] There are two upper dust collection heads, which are respectively located behind the corresponding upper grinding roller and cleaning roller brush; there is one lower dust collection head, which is located behind the corresponding lower cleaning roller brush.

[0012] The plate centering device includes a pair of transverse centering plates and a pair of longitudinal centering plates which are symmetrically arranged. The frame is provided with a transverse centering plate driving cylinder for driving the transverse centering plate to swing left and right and a translation cylinder for driving the longitudinal centering plate to move horizontally. The glue spraying assembly includes a transverse translation slide and a glue spraying box installed on the transverse translation slide. The bottom of the glue spraying box is an opening, and a group of glue spraying heads are provided in the bottom opening.

[0013] The transverse centering plate is hinged to the frame through a pin shaft, and the two ends of the transverse centering plate driving cylinder are movably connected to the transverse centering plate and the frame respectively; a pair of guide rods are provided on both sides of the frame, and the longitudinal centering plate is movably installed on the guide rods. Each longitudinal centering plate corresponds to two translation cylinders, which are fixed to the frame and drive the longitudinal centering plate to move horizontally.

[0014] The frames on both sides of the conveyor are respectively provided with a plate positioning assembly and a plate lifting assembly. The plate positioning assembly includes a positioning plate and a positioning plate driving cylinder. The positioning plate is hinged to the frame through a pin shaft. The two ends of the positioning plate driving cylinder are movably connected to the positioning plate and the frame respectively.

[0015] The plate lifting assembly includes a lifting roller and a pair of lifting cylinders. The pair of lifting cylinders are respectively fixed to the frame, and both ends of the lifting roller are respectively movably mounted on the piston rods of the pair of lifting cylinders through bearings.

[0016] A demister barrel is provided on the top of the frame, an induced draft fan is provided on the top of the demister barrel, a sedimentation area is provided at the bottom of the demister barrel, a spray pipe communicating with the sedimentation area is provided on the upper part of the demister barrel, air guide grooves are provided on the top of the horizontal center plate and the vertical center plate, and the demister barrel is provided with air inlets respectively connected to each air guide groove.

[0017] The advantages of the utility model are: ① Both sides of the plate can be polished and dust-cleaned at the same time, which greatly improves the processing efficiency. The surface of the polished plate is deeply cleaned by a cleaning roller brush, which can effectively prevent dust from adhering to the surface of the plate, and provide a guarantee for the quality of subsequent finishing and pasting; ② A pair of horizontal centering plates and a pair of longitudinal centering plates respectively clamp the side edges of the plate from the outside to center it, and protect the equipment around the plate, so as to prevent the glue mist escaping from the side from adhering to the equipment when spraying glue, and at the same time improve the accuracy of glue spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the first implementation scheme of the plate grinding and cleaning device.

[0020] Figure 3 It is a structural schematic diagram of the second implementation scheme of the plate grinding and cleaning device.

[0021] Figure 4 This is a schematic diagram of the cleaning roller brush installation structure.

[0022] Figure 5 This is a schematic diagram of the connection between the dust collector and the dust collector head.

[0023] Figure 6 It is a schematic diagram of the structure of the plate pressing component.

[0024] Figure 7 It is a structural diagram of the glue spraying device.

[0025] Figure 8 It is a structural diagram of the glue spraying device in use.

[0026] Figure 9 It is a schematic diagram of the plate positioning component structure.

[0027] Figure 10 It is a schematic diagram of the demister barrel structure. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the utility model is usually placed when in use. This is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] As shown in the accompanying drawings, the present invention includes a plate polishing and cleaning device 100 and a glue spraying device 101 which are sequentially arranged from front to back.

[0033] The plate grinding and cleaning device 100 includes a box body 1 and a conveyor roller 2. A feed port is opened at the front end of the box body 1, and a discharge port is provided at the rear end of the box body 1. The conveyor roller 2 passes through both ends of the feed port and the discharge port of the box body 1. Grinding and cleaning components are provided in the box body 1 on the upper and lower sides of the conveyor roller 2; the grinding and cleaning components include grinding rollers 4 and cleaning roller brushes 5 arranged in sequence from the feed port to the discharge port. A dust collector 8 is provided on one side of the box body 1, and dust suction heads 9 connected to the air inlet of the dust collector 8 are provided in the box body 1 on the upper and lower sides of the conveyor roller 2.

[0034] The glue spraying device 101 includes a frame 20, a conveyor 21 is provided below the frame 20, and a plate centering device and a glue spraying assembly are provided on the frame 20 above the conveyor 21;

[0035] Before laying the decorative veneer, the board is first placed on the board polishing and cleaning device 100 for polishing and surface cleaning, and then enters the glue spraying device 101 to spray glue on the board surface.

[0036] Working mode of the plate grinding and cleaning device 100:

[0037] During use, the plate enters from the feed port of the box 1 and passes through the grinding roller 4 in turn to remove burrs on its surface, and then the dust attached to the surface of the plate is brushed up by the cleaning roller brush 5. The dust collection head 9 sends the dust on the plate into the dust collector 8 for purification. The dust collection head 9 is a flat structure, and its length is not less than the width of the plate.

[0038] In this case, when the plate passes through the box 1, the upper and lower grinding and cleaning components grind and clean the upper and lower surfaces of the plate at the same time, reducing processing steps and improving work efficiency.

[0039] A set of guide rollers are respectively provided on the front and rear sides of the box body 1 from the feed port to the discharge port to guide the moving direction of the plate and prevent the plate from deviating.

[0040] Furthermore, a pair of sealing brushes 10 are provided on the feed port and the discharge port of the box body 1, and the pair of sealing brushes 10 are symmetrically arranged in the upper and lower directions.

[0041] The sealing brush 10 is used to seal the feed and discharge ports of the box body 1, effectively preventing dust from escaping to the outside. Due to the gaps between the bristles, the sealing brush 10 does not completely seal the box body, but only serves to prevent dust from escaping. After the dust collector 8 is turned on, the dust and air in the box body 1 are sucked away through the dust suction head 9, creating a negative pressure inside the box body 1. External air can enter the box body 1 through the feed and discharge ports through the sealing brush 10.

[0042] Furthermore, a plate pressing assembly is provided on the feed port and the discharge port of the box body 1, and the plate pressing assembly includes a connecting shaft 11 and a connecting shaft mounting frame 12. A plurality of pressing rollers 13 are provided on the connecting shaft 11, and adjusting sliders 14 are respectively provided at both ends of the connecting shaft mounting frame 12, and a tightening spring 15 is provided between the adjusting slider 14 and the connecting shaft mounting frame 12. The two ends of the connecting shaft 11 are movably connected to the corresponding adjusting sliders 14 through bearings.

[0043] The plate pressing assembly is used to press the plate onto the conveyor roller 2 from above for forward conveyance, thereby maintaining the stability of the plate during the grinding and cleaning process.

[0044] A vertical slide groove is provided on the connecting shaft mounting frame 12, and the adjusting slider 14 is movably installed in the slide groove and can move up and down in the slide groove, so that the connecting shaft 11 and the pressing roller 13 can move up and down by themselves when pressing the plate. The tensioning spring 15 is used to press the adjusting slider 14 downward so that the pressing roller 13 is always close to the plate.

[0045] In the second embodiment of the grinding and cleaning assembly, each grinding and cleaning assembly has two cleaning roller brushes 5 , and the two cleaning roller brushes 5 are movably installed in the box body 1 through a pair of lifting cylinders 16 .

[0046] When in use, only one of the two cleaning roller brushes 5 of each grinding and cleaning component is involved in the work, and the other is idle. After each cleaning of a plate, the two cleaning roller brushes 5 are alternately used. Since the bristles of the cleaning roller brush 5 are made of nylon, they will wear out quickly after long-term friction and heat, and need to be stopped for replacement. In this case, the two cleaning roller brushes 5 are used alternately to prevent the bristles from overheating, effectively extending the service life.

[0047] Furthermore, dust collecting hoods 17 are provided at both upper and lower ends of the box body 1. The dust collecting hood 17 is assembled by a group of semicircular hoods that are coaxial with the grinding roller 4 and the cleaning roller brush 5 respectively. A slag discharge port 18 is provided at the bottom of the dust collecting hood 17 located below, and a slag hopper 19 communicated with the slag discharge port 18 is provided on the inner side of one end of the bottom of the box body 1. The slag discharge pipe of the dust collector 8 is communicated with the slag hopper 19.

[0048] The semicircular cover plays the role of guiding and collecting dust. The dust collected by the dust collecting hood 17 at the bottom falls directly into the slag hopper 19 from the slag discharge port 18, while the dust attached to the plate is sucked into the dust collector 8 when passing through the dust suction head 9. The purified and separated dust then enters the slag hopper 19 for centralized discharge. A valve is provided on the slag discharge pipe of the dust collector 8. Under the default condition, the valve is closed. When the dust is discharged, it is opened and transported to the slag hopper 19 for centralized cleaning. When the valve at the bottom of the slag hopper 19 is opened to discharge the dust, the negative pressure in the box body 1 can effectively reduce the problem of dust escaping during the discharge.

[0049] Preferably, there are two upper vacuum heads 9 , which are respectively located behind the corresponding upper grinding roller 4 and cleaning roller brush 5 , and there is one lower vacuum head 9 , which is located behind the corresponding lower cleaning roller brush 5 .

[0050] That is, the grinding and cleaning assembly located above cooperates with two dust suction heads 9. Since the dust on the upper surface of the plate during grinding and cleaning will fall onto the plate, the two dust suction heads 9 are used to absorb the dust after grinding and the dust after cleaning respectively, thereby improving the dust cleaning efficiency.

[0051] The dust generated by grinding and cleaning the lower surface of the plate mostly falls into the dust collecting cover 17, so the dust attached to the lower surface of the plate is cleaned behind the cleaning roller brush 5 on the rear side.

[0052] Working mode of glue spraying device 101:

[0053] The plate is moved to the designated position by the conveyor 21 and stops. A pair of transverse centering plates 23 and a pair of longitudinal centering plates 24 clamp the sides of the plate from all sides to center the plate. In this case, the transverse centering plates 23 and the longitudinal centering plates 24 are both L-shaped structures. While centering the plate, the transverse centering plates 23 and the longitudinal centering plates 24 are surrounded by the plate, effectively preventing glue mist from escaping from all sides of the plate to the equipment when spraying glue.

[0054] In this case, the width of conveyor 21 is smaller than the width of the sheet material, and the length of glue spray box 29 is the same as the sheet material. A set of glue spray heads are arranged in sequence along the length of glue spray box 29. The glue barrel can be mounted on the top of frame 20. The glue spray heads are connected to the glue barrel via a high-pressure hose. During glue spraying, the horizontal translation slide 28 is activated, moving glue spray box 29 at a constant speed along the length of the sheet material. During this movement, the glue spray heads evenly spray glue onto the surface of the sheet material. During glue spraying, a gap of 15-20 mm is provided between the bottom opening of glue spray box 29 and the sheet material to reduce the escape of glue mist.

[0055] Preferably, the conveyor 21 is a belt conveyor or a synchronous belt conveyor; the conveyor 21 is a belt conveyor or a synchronous belt conveyor.

[0056] Specifically, the transverse center plate 23 is hinged to the frame 20 through a pin shaft, and both ends of the transverse center plate driving cylinder 25 are movably connected to the transverse center plate 23 and the frame 20 respectively.

[0057] Furthermore, a pair of guide rods 32 are provided on both sides of the frame 20, and the longitudinal centering plate 24 is movably mounted on the guide rods 32. Each longitudinal centering plate 24 corresponds to two translation cylinders 26. The translation cylinders 26 are fixed to the frame 20 and drive the longitudinal centering plate 24 to move horizontally.

[0058] The longitudinal centering plate 24 is provided with a guide sleeve that cooperates with the guide rod 32. Since the longitudinal centering plate 24 corresponds to the length direction of the plate, the length of the longitudinal centering plate 24 is longer. The longitudinal centering plate 24 is synchronously driven by two translation cylinders 26 to move horizontally, making its movement stable.

[0059] Preferably, the lateral translation slide 28 is an electric slide.

[0060] Furthermore, a plate positioning assembly 35 and a plate lifting assembly are respectively provided on the frame 20 on both sides of the conveyor 21. The plate positioning assembly 35 includes a positioning plate 36 and a positioning plate driving cylinder 37. The positioning plate 36 is hinged to the frame 20 via a pin, and the two ends of the positioning plate driving cylinder 37 are movably connected to the positioning plate 36 and the frame 20 respectively.

[0061] The plate lifting assembly includes a lifting roller 38 and a pair of lifting cylinders 39. The pair of lifting cylinders 39 are respectively fixed to the frame 20. The two ends of the lifting roller 38 are respectively mounted on the piston rods of the pair of lifting cylinders 39 through bearings.

[0062] When the plate enters the glue spraying area, one end of the positioning plate 36 extends upward to block the plate and locate the plate's moving position. Then the positioning plate 36 retracts downward to under the plate, and the plate lifting assembly starts, and the plate is partially lifted up by the lifting rollers 38 on both sides. The plate can move left and right on the two lifting rollers 38. At this time, the plate centering device is started again to clamp and center the plate on all sides.

[0063] Furthermore, a demister barrel 40 is provided on the top of the frame 20, an induced draft fan 41 is provided on the top of the demister barrel 40, a sedimentation area is provided at the bottom of the demister barrel 40, a spray pipe 42 connected to the sedimentation area is provided at the upper part of the demister barrel 40, air guide grooves 43 are provided on the top of the transverse center plate 23 and the longitudinal center plate 24, and air inlets are provided on the demister barrel 40, respectively connected to each air guide groove 43.

[0064] The horizontal parts of the transverse center plate 23 and the longitudinal center plate 24 are hollow structures, and a group of air inlet holes are arranged on the air guide groove 43. After the induced draft fan 41 is turned on, the air inlet holes of the transverse center plate 23 and the longitudinal center plate 24 are in a negative pressure state. The glue mist escaping from all sides during the glue spraying process can enter the demisting barrel 40 through the air inlet holes. The spray pipe 42 is connected to the sedimentation area through a pump. A plurality of spray heads are provided on the spray pipe 42 for forming a water curtain in the demisting barrel 40. The glue mist enters the demisting barrel 40 and adheres to the water for purification, thereby further preventing the glue mist from escaping.

Claims

1. A polishing and gluing system for board surface pasting, characterized in that It comprises a plate polishing and cleaning device (100) and a glue spraying device (101) which are arranged in sequence from front to back. The plate grinding and cleaning device (100) comprises a box body (1) and a conveying roller (2), wherein a feed port is provided at the front end of the box body (1), and a discharge port is provided at the rear end of the box body (1), and the conveying roller (2) passes through both ends of the feed port and the discharge port of the box body (1), and a grinding and cleaning component is provided in the box body (1) on the upper and lower sides of the conveying roller (2); the grinding and cleaning component comprises a grinding roller (4) and a cleaning roller brush (5) arranged in sequence from the feed port to the discharge port, a dust collector (8) is provided on one side of the box body (1), and a dust collecting head (9) communicated with the air inlet of the dust collector (8) is provided in the box body (1) on the upper and lower sides of the conveying roller (2); The glue spraying device (101) comprises a frame (20), a conveyor (21) passing through the frame (20) is provided below the frame (20), and a plate centering device and a glue spraying assembly are provided on the frame (20) above the conveyor (21).

2. A polishing and gluing system for plate veneer pasting according to claim 1, characterized in that A pair of sealing brushes (10) are provided on the feed port and the discharge port of the box body (1), and the pair of sealing brushes (10) are symmetrically arranged in an upper and lower direction.

3. The polishing and gluing system for plate veneer pasting according to claim 1 is characterized in that A plate pressing assembly is provided on both the feed port and the discharge port of the box body (1), and the plate pressing assembly includes a connecting shaft (11) and a connecting shaft mounting frame (12). A plurality of pressing rollers (13) are provided on the connecting shaft (11), and an adjusting slider (14) is provided at both ends of the connecting shaft mounting frame (12). A tightening spring (15) is provided between the adjusting slider (14) and the connecting shaft mounting frame (12), and both ends of the connecting shaft (11) are movably connected to the corresponding adjusting slider (14) through bearings.

4. The polishing and gluing system for plate veneer pasting according to claim 1 is characterized in that Each grinding and cleaning assembly has two cleaning roller brushes (5), and the two cleaning roller brushes (5) are movably installed in the box body (1) through a pair of lifting cylinders (16); dust collecting covers (17) are provided at both ends of the box body (1), and the dust collecting covers (17) are assembled from a group of semicircular covers coaxial with the grinding roller (4) and the cleaning roller brush (5), and a slag discharge port (18) is provided at the bottom of the dust collecting cover (17) at the bottom, and a slag bucket (19) communicating with the slag discharge port (18) is provided on the inner side of one end of the bottom of the box body (1), and the slag discharge pipe of the dust collector (8) is communicated with the slag bucket (19).

5. The polishing and gluing system for plate veneer pasting according to claim 1 is characterized in that There are two upper dust collecting heads (9), which are respectively located behind the corresponding upper grinding roller (4) and the cleaning roller brush (5); there is one lower dust collecting head (9), which is located behind the corresponding lower cleaning roller brush (5).

6. The polishing and gluing system for plate veneer pasting according to claim 1 is characterized in that The plate centering device includes a pair of transverse centering plates (23) and a pair of longitudinal centering plates (24) respectively arranged in a symmetrical shape, and a transverse centering plate driving cylinder (25) for driving the transverse centering plate (23) to swing left and right and a translation cylinder (26) for driving the longitudinal centering plate (24) to move horizontally are respectively provided on the frame (20); the glue spraying assembly includes a transverse translation slide (28) and a glue spraying box (29) installed on the transverse translation slide (28), the glue spraying box (29) has an opening at the bottom, and a group of glue spraying heads are provided in the bottom opening.

7. A polishing and gluing system for board surface pasting according to claim 6, characterized in that The transverse centering plate (23) is hinged to the frame (20) through a pin shaft, and the two ends of the transverse centering plate driving cylinder (25) are respectively movably connected to the transverse centering plate (23) and the frame (20); a pair of guide rods (32) are provided on both sides of the frame (20), and the longitudinal centering plate (24) is movably mounted on the guide rods (32). Each longitudinal centering plate (24) corresponds to two translation cylinders (26), and the translation cylinders (26) are fixed to the frame (20) and drive the longitudinal centering plate (24) to move horizontally.

8. The polishing and gluing system for plate veneer pasting according to claim 1 is characterized in that A plate positioning assembly (35) and a plate lifting assembly are respectively provided on the frames (20) located on both sides of the conveyor (21). The plate positioning assembly (35) includes a positioning plate (36) and a positioning plate driving cylinder (37). The positioning plate (36) is hinged to the frame (20) through a pin shaft. The two ends of the positioning plate driving cylinder (37) are respectively movably connected to the positioning plate (36) and the frame (20). The plate lifting assembly includes a lifting roller (38) and a pair of lifting cylinders (39). The pair of lifting cylinders (39) are respectively fixed to the frame (20). The two ends of the lifting roller (38) are respectively movably mounted on the piston rods of the pair of lifting cylinders (39) through bearings.

9. The polishing and gluing system for board surface pasting according to claim 6, characterized in that A demister barrel (40) is provided on the top of the frame (20), an induced draft fan (41) is provided on the top of the demister barrel (40), a sedimentation area is provided at the bottom of the demister barrel (40), a spray pipe (42) communicating with the sedimentation area is provided at the upper part of the demister barrel (40), air guide grooves (43) are provided on the tops of the transverse center plate (23) and the longitudinal center plate (24), and air inlets respectively connected to the air guide grooves (43) are provided on the demister barrel (40).

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