A laminating device for producing a press-fit particle board
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI JINGALLANG WOOD IND CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
Smart Images
Figure CN224525123U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gluing technology for the production of laminated particleboard, specifically to a gluing device for the production of laminated particleboard. Background Technology
[0002] As is well known, in the production process of laminated particleboard, the gluing device is the core equipment to achieve uniform gluing on the particleboard surface and ensure the quality of subsequent lamination processes. It uses the gluing components to evenly apply adhesive to the surface of the board, providing a foundation for the firm bonding of the finishing material and the substrate.
[0003] However, existing gluing equipment has many problems, which seriously affect production quality and efficiency. First, the glue application is uneven. Traditional equipment relies on a single glue-applying roller to directly apply the glue, and the amount of glue is determined by the gap between the roller surface and the board. However, the glue-applying roller will develop diameter deviations due to wear after long-term use, and there are production errors in the thickness of the particleboard. This makes it easy for glue stains to overflow at the edges after pressing. Second, it is difficult to control the amount of glue. The glue amount adjustment of existing equipment relies on manual turning of a handwheel and judgment based on experience, without quantitative standards. The glue requirements of different particleboard materials vary greatly, but traditional equipment cannot switch precisely, often resulting in excessive or insufficient glue. In addition, there is serious waste of residual glue. The residual glue scraped off after gluing is mostly discarded due to impurities or oxidation. This not only increases production costs but also causes waste of resources. Summary of the Invention
[0004] In order to overcome the problems of uneven glue application, difficulty in controlling the amount of glue, and serious waste of excess glue in the existing glue application equipment for the production of laminated particleboard, this utility model provides a glue application equipment for the production of laminated particleboard that provides uniform glue application, controllable glue amount, and recyclable excess glue.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a gluing device for producing laminated particleboard, comprising: Frame, feeding assembly, gluing assembly, glue quantity adjustment mechanism, glue scraping assembly, linkage drive mechanism; The frame is a rectangular frame structure, placed horizontally on the ground; The feeding assembly is horizontally arranged in the middle of the frame and includes at least two feeding rollers. The axes of the feeding rollers are parallel to each other and perpendicular to the length direction of the frame. The two ends of the rollers are rotatably connected to the frame through bearings. The glue application assembly is located on the side of the feeding assembly and includes a glue application roller and a glue box. The axis of the glue application roller is parallel to the axis of the feeding roller. Both ends of the roller are rotatably connected to the frame through bearings. The glue box is fixed to one side of the frame and its bottom is in contact with the surface of the glue application roller. The glue quantity adjustment mechanism is installed on the side of the glue tank near the glue coating roller, and includes an adjustment baffle and an adjustment bolt. The adjustment baffle is arranged along the axial direction of the glue coating roller and leaves a gap with the surface of the glue coating roller. The scraper assembly is located on the side of the coating roller away from the glue tank, and includes a scraper blade and an angle adjusting rod. One end of the scraper blade is in contact with the surface of the coating roller, and the other end is hinged to the frame via the angle adjusting rod. The length direction of the scraper blade is parallel to the axis of the coating roller. The linkage drive mechanism includes a motor and a belt assembly. The motor is fixed to the outside of the frame, and the belt assembly is connected to the feeding roller and the coating roller respectively, driving each roller to rotate synchronously.
[0006] Preferably, the two feeding rollers are arranged parallel to each other, with their axes located in the same vertical plane, and the roller surface spacing is adapted to the thickness of the particleboard; The two ends of the feeding roller are slidably connected to the vertical guide rail of the frame via sliders. The top of the slider is connected to an adjusting screw, which passes vertically through the top of the frame and is threaded into the frame. Rotating the screw can adjust the distance between the upper and lower rollers.
[0007] Furthermore, the surface of the coating roller is uniformly provided with annular glue storage grooves, and the grooves are distributed parallel to each other along the roller axis. The bottom of the glue box is equipped with an elastic glue dispensing scraper. The edge of the scraper is in contact with the surface of the glue coating roller. The length of the glue dispensing scraper is the same as the axial length of the glue coating roller. The side wall of the glue box is fixed to the frame with bolts. The horizontal distance between the bottom and the axis of the glue coating roller is less than the height of the glue box.
[0008] Furthermore, the adjusting bolt of the glue quantity adjusting mechanism extends laterally through the side wall of the glue tank and is threadedly connected to the glue tank. The inner end of the bolt is fixed perpendicularly to the adjusting baffle. A rubber sealing strip is provided on the edge of the baffle away from the bolt, and the sealing strip is parallel to the surface of the glue coating roller. The adjusting baffle is aligned with the axial length of the coating roller, and its thickness is aligned with the radial direction of the coating roller.
[0009] In a further embodiment, the angle adjustment rod of the scraper assembly is a screw with threads at both ends. One end is hinged to the scraper plate, and the other end is fixed to the ear plate of the frame by a nut. Rotating the nut can change the contact angle between the scraper plate and the surface of the coating roller. The scraper blade has an acute-angled cutting edge on the side closest to the coating roller, with the cutting edge pointing in the opposite direction to the rotation of the coating roller. A wear-resistant ceramic piece is provided at the point where the edge of the cutting edge contacts the surface of the coating roller.
[0010] Based on the aforementioned scheme, the belt assembly of the linkage drive mechanism includes a first belt and a second belt. The first belt drive is disposed between the feeding shaft and the second belt drive is disposed between the feeding shaft located at the bottom and the coating roller. A motor is mounted on the side of the frame, and the motor is connected to the feeding shaft located at the bottom via a key. Two adjustment devices are mounted on the side of the frame, and the adjustment devices are adapted to the first belt and the second belt.
[0011] Furthermore, based on the aforementioned solution, a residual glue recovery tank is provided below the glue scraping assembly. The recovery tank is an inclined tank with its high end located directly below the glue scraper and its low end connected to the frame. The angle between the bottom surface of the recovery tank and the horizontal plane is 15°-20°.
[0012] Furthermore, based on the aforementioned solution, the frame is provided with height adjustment feet at the four corners of the bottom, the axis of the adjustment feet is perpendicular to the bottom surface of the frame, and the top is threadedly connected to the frame; A guide plate is provided at the inlet of the feeding assembly. The guide plate has a flared structure and is fixed to the end of the frame. The plate surface is perpendicular to the axis of the feeding roller, and the small opening faces the feeding direction.
[0013] Beneficial effects This gluing device for particleboard production solves the problems of uneven glue application, difficult glue control, and excess glue waste in traditional devices. The upper and lower feeding rollers of the feeding assembly have adjustable spacing to adapt to different thicknesses of boards and ensure smooth conveying. The annular glue storage tank of the glue roller, together with the elastic scraper of the glue box, can apply glue evenly. The glue quantity adjustment mechanism can precisely control the glue output by adjusting the gap between the baffle and the glue roller to meet the needs of different boards. The glue scraping assembly has an adjustable angle to scrape off excess glue, and the wear-resistant ceramic blade on the edge extends its service life. The excess glue recovery tank below can collect excess glue and reduce waste. The linkage drive mechanism ensures that all components operate synchronously, improving overall efficiency and making it suitable for the stable gluing requirements of particleboard production. Attached Figure Description
[0014] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the feeding roller of this utility model; Figure 3 This is a schematic diagram of the adhesive coating assembly of this utility model; Figure 4 This utility model Figure 3 A magnified schematic diagram of the partial structure at point A in the middle; Figure 5 This is a schematic diagram of the adhesive scraping assembly of this utility model; Figure 6 This utility model Figure 5 A magnified schematic diagram of the local structure at point B; Figure 7 This utility model Figure 5 A magnified schematic diagram of the structure at point C.
[0015] In the diagram: 1. Frame; 2. Feeding assembly; 3. Glue application assembly; 4. Glue quantity adjustment mechanism; 5. Glue scraper assembly; 6. Linkage drive mechanism; 7. Feeding roller; 8. Glue application roller; 9. Glue tank; 10. Adjusting baffle; 11. Adjusting bolt; 12. Glue scraper; 13. Angle adjustment rod; 14. Motor; 15. Belt assembly; 18. Slider; 19. Adjusting screw; 20. Annular glue storage tank; 21. Scraper; 23. Rubber sealing strip; 24. Screw; 25. Cutting edge; 26. Wear-resistant ceramic plate; 27. First belt; 28. Second belt; 29. Adjusting device; 30. Recycling tank; 31. Adjusting foot; 32. Guide plate. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] See Figures 1-7 A gluing device for producing laminated particleboard is disclosed. Through a collaborative design of "feeding-gluing-controlling-scraping-recycling", it achieves uniform gluing and precise control of the glue amount on the particleboard surface. The core solution is as follows: the frame 1 serves as the basic load-bearing structure; the central feeding component 2 smoothly conveys the particleboard through the adjustable-gap feeding rollers 7; the gluing rollers 8 of the side gluing component 3 cooperate with the glue box 9 to apply glue; the glue amount adjustment mechanism 4 controls the glue amount through the gap of the baffles; the scraping component 5 scrapes off excess glue; the excess glue recycling tank 30 enables resource reuse; and the linkage drive mechanism 6 ensures that all components operate synchronously. The components are fixed and coordinated by welding, bolt connection, bearing rotation, etc. This device solves the problems of uneven gluing, difficult glue amount control, and excess glue waste in traditional devices and is suitable for batch gluing production of laminated particleboard of different thicknesses.
[0018] First, refer to Figure 3 In this embodiment, the frame 1 is a rectangular frame structure, welded from Q235 steel plate. The bottom four corners are connected to height adjustment feet 31 (45 steel, with the axis perpendicular to the bottom surface of the frame 1) by thread. Rotating the adjustment feet 31 can adjust the level of the frame 1 to ensure that all components operate in the same horizontal plane. The middle of the frame 1 has a reserved mounting hole for the feeding roller 7 along the length direction. The glue box 9 fixing seat and the ear plate of the scraping component 5 are welded on the side. The mounting plate of the motor 14 is fixed on the outside by bolts. The whole is welded to form a rigid structure to ensure that there is no vibration or deformation during operation.
[0019] A guide plate 32 is welded to the end of the frame 1. The guide plate 32 has a flared structure (made of bent steel plate). The surface of the guide plate 32 is perpendicular to the axis of the feeding roller 7. The larger opening faces the feeding direction, and the smaller opening is aligned with the inlet of the feeding assembly 2. The gradual structure guides the granules to enter the feeding roller 7 accurately, avoiding the glue coating deviation caused by feeding deviation.
[0020] Then, refer to Figure 2 In this embodiment, the feeding assembly 2 is horizontally installed in the middle of the frame 1. The feeding rollers 7 are all seamless steel pipes covered with a rubber layer (Shore hardness 70A). The feeding rollers 7 are rotatably connected to the frame 1 through deep groove ball bearings. The axes of the feeding rollers 7 are parallel to each other and perpendicular to the length direction of the frame 1, and are located in the same vertical plane.
[0021] The bearing seats at both ends of the feeding roller 7 are fixed to the frame 1 by bolts, and their positions are fixed. The bearing seats at both ends of the feeding roller 7 are welded to the slider 18 (made of cast iron). The slider 18 is slidably set in the vertical guide rail (rectangular cross section, welded to the inside of the frame 1) of the frame 1. The top of the slider 18 is connected to the adjusting screw 19 (45 steel) through the pin shaft. The screw 24 passes vertically through the top of the frame 1 and is threaded into the frame 1. Rotating the adjusting screw 19 can drive the slider 18 to slide up and down along the guide rail, change the spacing of the feeding roller 7, and adapt to granules of different thicknesses (the thickness error is further compensated by the elastic deformation of the rubber layer), ensuring that the granules are stably clamped during the conveying process without shaking or shifting, providing a stable foundation for subsequent uniform glue coating.
[0022] Secondly, see Figure 3 In this embodiment, the glue application assembly 3 is located on the side of the feeding assembly 2. Glue application to the particleboard surface is achieved through the cooperation of the glue box 9 and the glue application roller 8. The specific structure and cooperation are as follows: The coating roller 8 is a seamless steel pipe (chrome plated). The coating roller 8 is rotatably connected to the frame 1 through bearings. Its axis is parallel to the feeding roller 7. The surface of the coating roller 8 is evenly provided with annular glue storage grooves 20 (U-shaped cross-section) along the axial direction. The glue storage grooves 20 are distributed in parallel to temporarily store glue and achieve uniform glue application.
[0023] The glue box 9 is a rectangular box (made of stainless steel) and is fixed to one side of the frame 1 by bolts. The bottom is welded with an elastic glue dispensing scraper 21 (65Mn spring steel, with the edges ground into an arc shape). The length of the scraper 21 is consistent with the axial length of the glue coating roller 8. In its natural state, the scraper 21 is in close contact with the surface of the glue coating roller 8 (compensating for the slight jump of the glue coating roller 8 through its own elastic deformation). The horizontal distance between the bottom of the glue box 9 and the axis of the glue coating roller 8 is less than the height of the glue box 9, ensuring that the glue is in continuous contact with the glue dispensing scraper 21 under the action of gravity. When the glue coating roller 8 rotates, the glue storage tank 20 picks up the glue through the glue dispensing scraper 21 and carries the glue to the surface of the particleboard as the glue coating roller 8 rotates. The annular glue storage tank 20 can prevent the glue from flowing along the roller axis and ensure the uniformity of axial glue application.
[0024] See again Figure 5 In this embodiment, the glue quantity adjustment mechanism 4 is installed on the side of the glue tank 9 near the glue coating roller 8 to precisely control the glue quantity of the glue coating roller 8. The adjustment baffle 10 is a rectangular steel plate (Q235) and is arranged along the axial direction of the glue coating roller 8. Its length is consistent with the glue coating roller 8, and its thickness direction is consistent with the radial direction of the glue coating roller 8. A rubber sealing strip 23 (Shore hardness 50A) is pasted on the edge away from the glue tank 9 with glue. The surface of the sealing strip 23 is parallel to the surface of the glue coating roller 8 to ensure the sealing performance when in contact.
[0025] Adjusting bolt 11 (M10) extends horizontally through the side wall of glue box 9 and is threadedly connected to glue box 9. The inner end of adjusting bolt 11 is fixed perpendicularly to adjusting baffle 10 by welding, and the outer end is welded with a hexagonal handle. When adjusting bolt 11 is rotated, adjusting bolt 11 pushes or pulls adjusting baffle 10 radially, changing the gap between adjusting baffle 10 and the surface of glue roller 8 (the gap range can be quantified by rotating adjusting bolt 11). The smaller the gap, the less glue is dispensed, and vice versa. With rubber sealing strip 23, glue can be prevented from leaking from the edge of adjusting baffle 10, so as to meet the differentiated glue quantity requirements of different particleboards (such as high-density board and low-density board).
[0026] In addition, see Figure 5 In this embodiment, the scraper assembly 5 is located on the side of the coating roller 8 away from the glue tank 9. It is used to scrape off excess glue from the surface of the coating roller 8 to ensure accurate transfer of glue to the granule plate. The scraper plate 12 is a rectangular steel plate (65Mn). One end is ground into a sharp-angled cutting edge 25. The cutting edge 25 is fixed with a wear-resistant ceramic sheet 26 (alumina material) by bolts. The surface of the ceramic sheet is in contact with the surface of the coating roller 8. The other end is hinged to the angle adjustment rod 13 by a pin. The length direction is parallel to the axis of the coating roller 8.
[0027] The angle adjustment rod 13 is a screw 24 (45 steel) with threads at both ends. One end is hinged to the scraper 12 through a fisheye bearing, and the other end passes through the ear plate of the frame 1 (welded to the side of the frame 1) and is fixed by double nuts. Rotating the nuts can change the contact angle between the scraper 12 and the surface of the coating roller 8 (adjustment range 0°-15°). When the coating roller 8 rotates, the blade 25 forms a shearing force at the contact point with the coating roller 8 to scrape off excess glue. The wear-resistant ceramic plate 26 can reduce the wear of the blade 25. The angle adjustment can adapt to glues of different viscosities (high viscosity glue requires a larger contact angle to enhance scraping force).
[0028] In addition, see Figure 3 In this embodiment, the linkage drive mechanism 6 ensures that the feeding roller 7 and the coating roller 8 rotate synchronously, ensuring that the particleboard conveying speed matches the coating speed. The motor 14 (three-phase asynchronous motor) is fixed to the motor 14 mounting plate on the outside of the frame 1 by bolts, and the output shaft of the motor 14 is connected to the drive pulley (45 steel) by a flat key.
[0029] The belt assembly 15 includes a first belt 27 and a second belt 28 (both are polyurethane synchronous belts). The first belt 27 is sleeved between the driven pulleys of the feeding roller 7 to realize the reverse synchronous rotation of the upper feeding roller 7. The second belt 28 is sleeved between another driven pulley of the feeding roller 7 and the driven pulley of the coating roller 8, driving the coating roller 8 and the feeding roller 7 to rotate in the same direction.
[0030] Two adjusting devices 29 are fixed to the side of the frame 1 by bolts, which are in contact with the first belt 27 and the second belt 28 respectively. The adjusting devices 29 can push and press the first belt 27 and the second belt 28 to ensure that the first belt 27 and the second belt 28 do not slip. After the motor 14 starts, it drives each roller to rotate synchronously through the belt group 15. The granule board passes through the glue coating roller 8 at a uniform speed under the drive of the feeding roller 7. The glue coating roller 8 synchronously transfers the glue to the surface of the granule board to avoid uneven glue coating caused by speed difference.
[0031] In addition, see Figure 5 In this embodiment, the residual adhesive recovery tank 30 is a stainless steel inclined tank, which is fixed to the inside of the frame 1 by bolts and located directly below the adhesive scraping assembly 5. The high-end edge is aligned with the bottom of the adhesive scraper 12, and the low end is connected to the recovery box on the side of the frame 1 through a pipe (the recovery box is fixed to the frame 1 by bolts). The bottom surface of the recovery tank 30 forms an inclined angle with the horizontal plane, ensuring that the residual adhesive scraped off by the adhesive scraper 12 flows along the recovery tank 30 under the action of gravity and enters the recovery box through the pipe, realizing the secondary use of adhesive (which can be used for secondary boards with lower adhesive requirements) and reducing waste.
[0032] In addition, see Figure 5 In this embodiment, the feeding roller 7 adjusts the spacing by adjusting the screw 19, elastically clamps the granule plate and conveys it at a uniform speed. When the surface of the granule plate comes into contact with the surface of the coating roller 8, the glue on the surface of the coating roller 8 is transferred to the granule plate. The linear speeds of the two are consistent (as ensured by the linkage drive mechanism 6), ensuring that the glue coating is uniform and without streaks.
[0033] The glue in the glue box 9 is evenly filled into the annular glue storage tank 20 of the glue coating roller 8 by the elastic glue dispensing scraper 21. The gap between the baffle 10 and the glue coating roller 8 is adjusted to control the amount of glue per unit length. The glue storage tank 20 ensures that the glue is evenly distributed along the axial direction and avoids excessive glue in some areas.
[0034] The scraper 12 is adjusted to the optimal bonding angle by the angle adjustment rod 13 to scrape off excess glue from the surface of the glue application roller 8. The excess glue slides down the scraper 12 to the excess glue recycling tank 30 and is collected in the recycling bin, achieving a seamless connection between scraping and recycling.
[0035] The motor 14 synchronously drives the feeding roller 7 and the coating roller 8 through the belt assembly 15. The adjustment device 29 ensures belt tension, and the friction of each rotating part is reduced through bearings to ensure smooth overall operation and provide power guarantee for precise coating.
[0036] In addition, see Figure 1 In this embodiment, the adjusting screw 19 of the rotating feeding roller 7 is adjusted according to the thickness of the granule board so that the spacing between the feeding rollers 7 is slightly larger than the thickness of the board (to reserve space for elastic deformation of the rubber layer), so that the board can be clamped stably.
[0037] The adjusting bolt 11 of the rotating glue quantity adjusting mechanism 4 is used to set the gap between the adjusting baffle 10 and the glue application roller 8 according to the glue viscosity and the requirements of the board (the larger the gap, the more glue is dispensed). The rubber sealing strip 23 ensures that there is no glue leakage at the edge. The angle adjusting rod 13 nut of the rotating scraper assembly 5 is used to adjust the contact angle between the scraper blade 12 and the glue application roller 8, ensuring that the excess glue can be scraped off without damaging the roller surface.
[0038] Check the belt tension of the linkage drive mechanism 6 and adjust it to a suitable state through the adjustment device 29. Start the motor 14 to test the direction and speed of each roller (the feeding roller 7 and the glue coating roller 8 rotate in opposite directions, but have the same linear speed). Put the pressed granule board into the guide plate 32 through the large opening and guide it into the space between the feeding rollers 7 through the flared opening. Under the action of friction, the feeding roller 7 drives the board to move towards the glue coating assembly 3. The glue in the glue tank 9 is evenly filled into the annular glue storage tank 20 of the glue coating roller 8 through the bottom elastic glue scraper 21. The glue coating roller 8 rotates with the motor 14, and the glue in the storage tank is transferred with the roller body to the contact point with the granule board to achieve the initial glue coating.
[0039] As the granulated board continues to move, excess glue on the surface is scraped off by the blade 25 of the scraper 12 (the scraped-off excess glue falls along the scraper 12 into the excess glue recovery tank 30), and is collected in the recovery tank 30 to the recovery box. The granulated board that has been coated with glue is conveyed to the next process by the feeding roller 7. Throughout the process, the linkage drive mechanism 6 ensures that the feeding and coating speeds are matched, and the glue quantity adjustment mechanism 4 and the scraper assembly 5 work together to control the glue quantity, so as to achieve a uniform, accurate and energy-saving coating effect.
[0040] The rubber layer and adjustable spacing design of the feeding roller 7 can adapt to particleboard of different thicknesses, laying the foundation for uniform glue application. The annular glue storage tank 20 of the glue application roller 8 can divide the glue into independent units along the axial direction. With the continuous scraping action of the elastic glue dispensing scraper 21, the adjusting bolt 11 of the glue quantity adjustment mechanism 4 can accurately switch the glue quantity according to different boards (such as decorative particleboard and substrate particleboard) to avoid glue overflow or insufficient adhesion. The sharp-angled blade 25 of the scraper 12 cooperates with the wear-resistant ceramic plate 26 to scrape off the excess glue on the surface of the glue application roller 8.
[0041] In addition, see Figure 1In this embodiment, the glue application parameters for the 18mm thick decorative particleboard are as follows: The spacing of the feeding rollers 7 is adjusted to 18.5mm (leaving 0.5mm for rubber layer deformation space) to ensure smooth and non-extrusive conveying of the board. The gap between the glue amount adjustment baffle 10 and the glue application roller 8 is set to 0.3mm (corresponding to a glue amount of 150g / m², suitable for the bonding requirements of the decorative particleboard). The contact angle of the scraper 12 is adjusted to 8° (for polyurethane glue with a viscosity of 1000cP, to ensure that the excess glue is completely scraped off).
[0042] Glue application process: An 18mm thick decorative particleboard enters the feeding roller 7 via the guide plate 32. The elastic deformation of the rubber layer generates clamping force. The coating roller 8 rotates with the motor 14. The polyurethane glue in the glue box 9 is filled into the annular glue storage tank 20 via the elastic glue discharge scraper 21. The glue storage tank evenly distributes the glue on the roller surface. As the roller rotates, it contacts the surface of the particleboard and transfers the glue to form a preliminary glue layer.
[0043] The particle board continues to move to the scraper assembly 5. The scraper blade 12 with an 8° bonding angle has its blade 25 scraping off the excess glue on the surface. The glue layer thickness is reduced from the initial 0.2mm to 0.1mm (uniformly distributed). The scraped-off excess glue slides down the scraper blade 12 to the excess glue recycling tank 30 and flows into the recycling bin through the tank.
[0044] The coated particleboard is fed out by the feeding roller 7. The adhesive layer on the surface is continuous without bubbles or missing adhesive. After the subsequent pressing process, the bonding strength between the veneer and the substrate reaches 1.2MPa (the strength after pressing with a traditional device is about 0.8MPa), and there is no adhesive residue overflowing from the edges.
[0045] Finally, see Figure 1 In this embodiment, the surface of the coating roller 8 is changed to chrome plating + polytetrafluoroethylene coating to reduce the adhesion of the glue and make the excess glue easier to scrape off. The glue box 9 is made of 316L stainless steel, which is suitable for the application of acidic glues (such as urea-formaldehyde glue) and improves corrosion resistance by 3 times.
[0046] Working principle: When using this gluing device for producing laminated granules, the first step is to match the thickness with the spacing: rotate the adjusting screw 19 of the feeding assembly 2 to drive the feeding roller 7 to slide up and down along the vertical guide rail of the frame 1, and adjust the spacing with the feeding roller 7 (e.g., for 18mm thick granules, it needs to be adjusted to 18.5mm to allow space for elastic deformation of the rubber layer), to ensure that the granules are held stably without compression deformation.
[0047] Guiding and conveying start: The granule plate enters from the flared guide plate 32 at the end of the frame 1, and is guided to the feeding rollers 7 through the gradient structure. The motor 14 of the linkage drive mechanism 6 is started, and the feeding rollers 7 are driven to rotate in the opposite direction synchronously through the first belt 27, so as to horizontally convey the granule plate to the glue coating assembly 3.
[0048] Uniform application of adhesive: The glue-applying roller 8 rotates with the second belt 28 (which rotates synchronously with the feeding roller 7). The elastic glue-dispensing scraper 21 (65Mn spring steel) at the bottom of the glue box 9 evenly fills the glue into the annular glue storage groove 20 (U-shaped cross section, axially parallel distribution) on the surface of the glue-applying roller 8. The glue storage groove prevents the glue from flowing along the roller shaft, ensuring uniform axial application of adhesive.
[0049] Precise adjustment of adhesive amount: Rotate the adjusting bolt 11 of the adhesive amount adjustment mechanism 4 to push the adjusting baffle 10 (with rubber sealing strip 23) to move radially along the coating roller 8, changing the gap between the baffle and the roller surface (e.g., 0.3mm corresponds to 150g / m² adhesive amount). The smaller the gap, the less adhesive is dispensed, which is suitable for different particleboards (e.g., high-density board requires a larger amount of adhesive). The rubber sealing strip 23 prevents adhesive leakage at the edges.
[0050] Excess adhesive removal: When the particleboard passes through the glue-coating roller 8, the surface is coated with adhesive, and then it enters the glue-scraping assembly 5. The glue-scraping plate 12 is adjusted to an 8° fitting angle (for 1000 cP viscosity glue) by the angle adjustment rod 13 (screws 24 with threads at both ends). The wear-resistant ceramic plate 26 (alumina material) with sharp edge 25 scrapes off the excess adhesive on the surface to ensure that the adhesive layer thickness is uniform (e.g., 0.1 mm).
[0051] Residual adhesive recycling and reuse: The scraped residual adhesive slides down the scraper 12 to the residual adhesive recycling tank 30 below (tilted 15°-20°), and is guided by the tank into the recycling box on the side of the frame 1 for secondary use (for secondary boards), reducing waste.
[0052] Speed matching control: Motor 14 drives the feeding roller 7 and the coating roller 8 to rotate synchronously (with the same linear speed) through belt group 15 to avoid coating streaks caused by speed difference. The adjustment device 29 on the side of the frame 1 ensures that the first belt 27 and the second belt 28 do not slip, and ensures that the conveying and coating rhythms are matched.
[0053] Continuous conveying to the next process: The granulated board that has been coated with glue is continued to be conveyed by the feeding roller 7, leaving the glue application device and entering the subsequent pressing process. The whole process does not require manual intervention, realizing continuous production.
[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A gluing device for producing laminated particleboard, characterized in that, include: Frame (1), feeding assembly (2), gluing assembly (3), glue quantity adjustment mechanism (4), scraping assembly (5), linkage drive mechanism (6); The frame (1) is a rectangular frame structure and is placed horizontally on the ground; The feeding assembly (2) is horizontally arranged in the middle of the frame (1), including at least two feeding rollers (7). The axes of the feeding rollers (7) are parallel to each other and perpendicular to the length direction of the frame (1). The two ends of the feeding rollers (7) are rotatably connected to the frame (1) through bearings. The glue application assembly (3) is located on the side of the feeding assembly (2) and includes a glue application roller (8) and a glue box (9). The axis of the glue application roller (8) is parallel to the axis of the feeding roller (7). The two ends of the glue application roller (8) are rotatably connected to the frame (1) through bearings. The glue box (9) is fixed on one side of the frame (1) and its bottom is in contact with the surface of the glue application roller (8). The glue quantity adjustment mechanism (4) is installed on the side of the glue box (9) near the glue roller (8), including an adjustment baffle (10) and an adjustment bolt (11). The adjustment baffle (10) is arranged along the axial direction of the glue roller (8) and has a gap with the surface of the glue roller (8). The scraper assembly (5) is located on the side of the coating roller (8) away from the glue tank (9), and includes a scraper blade (12) and an angle adjustment rod (13). One end of the scraper blade (12) is in contact with the surface of the coating roller (8), and the other end is hinged to the frame (1) through the angle adjustment rod (13). The length direction of the scraper blade (12) is parallel to the axis of the coating roller (8); and The linkage drive mechanism (6) includes a motor (14) and a belt assembly (15). The motor (14) is fixed on the outside of the frame (1), and the belt assembly (15) is connected to the feed roller (7) and the glue coating roller (8) respectively, driving the glue coating roller (8) and the feed roller (7) to rotate synchronously.
2. The gluing device for producing laminated granulated boards according to claim 1, characterized in that, The feeding rollers (7) are arranged in parallel vertically, with their axes located in the same vertical plane. The roller spacing of the feeding rollers (7) is adapted to the thickness of the particleboard. The two ends of the feeding roller (7) are slidably connected to the vertical guide rail of the frame (1) through the slider (18). The top of the slider (18) is connected to the adjusting screw (24). The screw (24) passes vertically through the top of the frame (1) and is threaded into the frame (1). Rotating the screw (24) can adjust the gap between the upper and lower rollers.
3. The gluing device for producing laminated granulated boards according to claim 2, characterized in that, The surface of the coating roller (8) is uniformly provided with annular glue storage grooves (20), and the glue storage grooves (20) are distributed parallel to the direction of the coating roller (8); The bottom of the glue box (9) is provided with an elastic glue dispensing scraper (21). The edge of the scraper (21) is in contact with the surface of the glue coating roller (8). The length of the glue dispensing scraper (21) is consistent with the axial length of the glue coating roller (8). The side wall of the glue box (9) is fixed to the frame (1) by bolts. The horizontal distance between the bottom and the axis of the glue coating roller (8) is less than the height of the glue box (9).
4. The gluing device for producing pressed particleboard according to claim 3, characterized in that, The adjusting bolt (11) of the glue quantity adjusting mechanism (4) passes through the side wall of the glue box (9) laterally and is threadedly connected to the glue box (9). The inner end of the adjusting bolt (11) is vertically fixed to the adjusting baffle (10). A rubber sealing strip (23) is provided on the side edge of the adjusting baffle (10) away from the adjusting bolt (11). The rubber sealing strip (23) is parallel to the surface of the glue coating roller (8). The length of the adjusting baffle (10) along the axial direction of the coating roller (8) is consistent with that of the coating roller (8), and the thickness direction of the adjusting baffle (10) is consistent with that of the coating roller (8) in the radial direction.
5. The gluing device for producing pressed granulated boards according to claim 4, characterized in that, The angle adjustment rod (13) is a screw rod (24) with threads at both ends. One end is hinged to the scraper plate (12), and the other end is fixed to the ear plate of the frame (1) by a nut. Rotating the nut can change the contact angle between the scraper plate (12) and the surface of the coating roller (8). The scraper (12) has an acute-angled cutting edge (25) on the side near the coating roller (8). The direction of the cutting edge (25) is opposite to the rotation direction of the coating roller (8). A wear-resistant ceramic piece (26) is provided at the edge of the cutting edge (25) where it contacts the surface of the coating roller (8).
6. The gluing device for producing pressed particleboard according to claim 5, characterized in that, The belt assembly (15) of the linkage drive mechanism (6) includes a first belt (27) and a second belt (28). The first belt (27) is driven between the feeding rollers (7), and the second belt (28) is driven between the feeding rollers (7) and the glue coating rollers (8) located at the bottom. A motor (14) is installed on the side of the frame (1). The motor (14) is connected to the feeding rollers (7) located at the bottom by a key. Two adjustment devices (29) are installed on the side of the frame (1). The adjustment devices (29) are adapted to the first belt (27) and the second belt (28).
7. The gluing device for producing laminated granulated boards according to claim 6, characterized in that, The glue scraping assembly (5) is provided with a residual glue recovery tank (30) below it. The recovery tank (30) is an inclined tank. The high end of the recovery tank (30) is located directly below the glue scraper (12). The low end of the recovery tank (30) is connected to the frame (1). The bottom surface of the recovery tank (30) is at an angle of 15°-20° to the horizontal plane.
8. The gluing device for producing laminated particleboard according to claim 7, characterized in that, The frame (1) has height adjustment feet (31) at the four corners of its bottom. The axis of the adjustment feet (31) is perpendicular to the bottom surface of the frame (1), and the top is threaded to the frame (1). The feeding assembly (2) has a guide plate (32) at the inlet. The guide plate (32) has a flared structure and is fixed to the end of the frame (1). The surface of the guide plate (32) is perpendicular to the axis of the feeding roller (7), and the small opening of the guide plate (32) faces the feeding direction.