Board polishing device for chair processing

Abstract

The utility model discloses a board polishing device for chair processing, which belongs to the field of chair processing and comprises an operation table, a straight cylinder with an upper opening and a lower opening is embedded in the operation table, a supporting table is fixedly arranged in the straight cylinder through a plurality of transverse columns, and two vertical bidirectional lead screws are rotatably arranged on the supporting table. The outer wall of each two-way lead screw is in threaded connection with a set of clamping plates which can clamp the periphery of a plate, two sets of electric guide rails are arranged on the inner wall of the straight cylinder above the clamping plates in parallel, and each set of electric guide rails is movably provided with a coarse sand polishing assembly and a fine sand polishing assembly. The coarse sand polishing assembly and the fine sand polishing assembly each comprise a connecting plate and a polishing frame, a plurality of positioning holes are formed in the connecting plates, the polishing frames can be detachably connected with the different positioning holes, a coarse sand polishing wheel and a fine sand polishing wheel are rotationally arranged in the two polishing frames correspondingly, and four dust removal assemblies are further arranged below the two bidirectional lead screws.

Description

Technical Field

[0001] This utility model relates to the field of chair processing, specifically to a panel polishing device for chair processing. Background Technology

[0002] Solid wood chairs are typically made from natural wood and contain no formaldehyde, benzene, or other synthetic chemicals, making them safer than MDF or plywood. High-quality solid woods, such as oak, walnut, and teak, are hard, resistant to pressure and deformation, and can remain stable for decades. Wood is also warm in winter and cool in summer, making it more skin-friendly than metal or plastic chairs. Due to their natural materials and craftsmanship, solid wood chairs have always been highly sought after in the furniture market.

[0003] In the processing of solid wood chairs, the polishing quality of the chair surface directly affects the product's appearance and feel. The processing of chair surfaces such as the seat and backrest directly impacts comfort, aesthetics, and durability. Polishing solid wood chair surfaces typically requires staged sanding with coarse and fine sanding. During sanding, the chair needs to be secured to prevent vibration and displacement. Traditional methods usually involve first securing the chair, then performing coarse polishing, and then moving to the next fine polishing stage, re-secured, and then performing fine polishing again. This process is cumbersome and cannot be streamlined by performing coarse polishing followed directly to fine polishing after the chair is secured. Furthermore, it lacks the flexibility to adjust the clamping and polishing wheel height according to the length, width, and thickness of the chair surface, and it cannot collect the generated debris and dust during polishing, potentially affecting worker health. Utility Model Content

[0004] To address the aforementioned issues, traditional methods typically involve first fixing the chair and then performing rough polishing, followed by a fine polishing process where the chair is re-fixed before final fine polishing. This cumbersome process makes it impossible to perform rough polishing followed directly by fine polishing after the chair is fixed, thus hindering polishing efficiency. Furthermore, it lacks the flexibility to adjust the height of the clamping and polishing wheel according to the length, width, and thickness of the chair surface, and it cannot collect the generated debris and dust during polishing, thus preventing health risks to workers. This invention provides a chair surface polishing device.

[0005] A panel polishing device for chair processing includes an operating table with a vertically open cylindrical section embedded within it. A support platform is fixed inside the cylindrical section via several horizontal columns. Two vertically aligned bidirectional lead screws are rotatably mounted on the support platform. Each lead screw has a set of clamping plates threaded onto its outer wall, allowing for clamping of the panel around its perimeter. Two sets of electric guide rails are parallel to each other on the inner wall of the cylindrical section above the clamping plates. Each set of electric guide rails has a coarse sand polishing component and a fine sand polishing component movably mounted on it. Both the coarse and fine sand polishing components include a connecting plate and a polishing frame. The connecting plate has several positioning holes, allowing for detachable connection of the polishing frame to different positioning holes. Coarse sand polishing wheels and fine sand polishing wheels are rotatably mounted inside the two polishing frames. Four dust removal components are also located below the two bidirectional lead screws. Each dust removal component includes a dust suction hood, with a filter frame and a suction fan at its inner and outer ends, respectively.

[0006] Furthermore, the support platform includes a fixedly connected cube and a conical shell. Two bidirectional lead screws, one above the other, pass through the cube and are rotatably mounted. Several horizontal columns are fixedly connected at both ends to the outer wall of the cube and the inner wall of the straight cylinder, respectively. Guide grooves are fixedly mounted on the inner walls of the horizontal columns. One end of the two bidirectional lead screws is rotatably mounted on the inner wall of the straight cylinder, and the other end passes through the side wall of the straight cylinder and is fixedly mounted with a crank handle.

[0007] Furthermore, a set of moving blocks is fixedly connected to the bottom of each set of clamping plates, and the moving blocks are threaded to the outer wall of the bidirectional lead screw. A rubber layer is fixedly installed on the inner wall of each set of clamping plates, and both ends of each set of clamping plates can move inside the guide groove.

[0008] Furthermore, two sets of electric guide rails are arranged parallel to each other on the inner wall of the straight cylinder. Electric sliders are slidably installed on both sets of electric guide rails. The two ends of the connecting plate are fixed on the outer wall of the electric slider. Several positioning holes are arranged vertically through the connecting plate. Another positioning hole is also provided on the polishing frame. The positioning hole on the polishing frame can be detached and installed with different positioning holes on the connecting plate through bolt assembly.

[0009] Furthermore, a polishing motor is fixedly installed on the outer wall of the polishing frame. The coarse polishing wheel and the fine polishing wheel are respectively installed on the output ends of the two polishing motors. The lowest points of the coarse polishing wheel and the fine polishing wheel are on the same horizontal plane. The abrasive particle size of the coarse polishing wheel is lower than that of the fine polishing wheel.

[0010] Furthermore, four dust hoods are embedded in the side walls of the straight cylinder and are located around the conical outer shell. The filter frame is fixedly installed on the inner wall of the straight cylinder to prevent wood dust from being sucked in by the dust hoods. The suction fan is fixedly installed on the operating table and is connected to the dust hoods. A debris flow port is provided between the outer wall of the conical outer shell and the inner side wall of the straight cylinder, and a collection box is provided below the debris flow port.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By rotating the bidirectional lead screw, the two sets of clamping plates can move closer or further apart, thereby clamping and fixing chair panels of different lengths and widths. After installing the polishing frame and the different positioning holes in the connecting plate, it can adapt to the polishing of chair panels of different thicknesses, which is highly flexible. After the chair panel is fixed, coarse polishing wheel is used for rough polishing, and then fine polishing wheel is used for fine polishing. The rough and fine polishing can be completed quickly, reducing operation steps and improving polishing efficiency. The dust collection hood can suck up the generated debris and dust onto the filter screen frame. After filtration, the air is discharged from the exhaust port of the suction fan, and the debris falls into the debris flow port below and is collected in the collection box. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a top view of the bidirectional lead screw 5 of this utility model;

[0014] Figure 3 This is a top view of the polishing frame 9 of this utility model;

[0015] Figure 4 This is a top view of the dust collection cover 13 of this utility model;

[0016] Figure 5 This is a schematic diagram of part A of the structure of this utility model;

[0017] Figure 6 This is a schematic diagram of part B of the structure of this utility model.

[0018] In the diagram: 1. Operating table; 2. Straight cylinder; 3. Horizontal column; 4. Support platform; 5. Two-way lead screw; 6. Clamping plate; 7. Electric guide rail; 8. Connecting plate; 9. Polishing rack; 10. Positioning hole; 11. Coarse polishing wheel; 12. Fine polishing wheel; 13. Dust hood; 14. Filter frame; 15. Fan; 16. Cube; 17. Conical shell; 18. Guide groove; 19. Handle; 20. Moving block; 21. Rubber layer; 22. Electric slider; 23. Bolt assembly; 24. Polishing motor; 25. Debris outlet; 26. Collection box. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Additionally, the term "multiple" should mean two or more.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The following will refer to the accompanying drawings. Figures 1-6 The present invention will be described in detail with reference to the embodiments.

[0024] A chair surface polishing device includes an operating table 1. A straight cylinder 2 with openings at the top and bottom is embedded in the operating table 1. A support platform 4 is fixedly installed inside the straight cylinder 2 by several horizontal columns 3. The support platform 4 includes a cube 16 and a conical shell 17 fixedly connected. The chair surface is placed on the top of the cube 16 from the upper opening of the straight cylinder 2. The surface is clamped and fixed by a clamping plate 6. The conical shell 17 can guide the falling wood chips to fall into the chip flow port 25 below.

[0025] Two vertically mounted bidirectional lead screws 5 are rotatably mounted on the support platform 4. The two bidirectional lead screws 5 pass through the cube 16 one above the other and are rotatably mounted. The two bidirectional lead screws 5 can rotate inside the cube 16 and are perpendicular to each other. Several horizontal columns 3 are fixedly connected at both ends to the outer wall of the cube 16 and the inner wall of the straight cylinder 2, respectively. The inner walls of the horizontal columns 3 are all fixedly provided with guide grooves 18. One end of each of the two bidirectional lead screws 5 is rotatably mounted on the inner wall of the straight cylinder 2, and the other end passes through the side wall of the straight cylinder 2 and is fixedly mounted with a crank handle 19.

[0026] Crank the handle 19 to rotate the bidirectional lead screw 5, which in turn allows a set of clamping plates 6 to move closer or further apart, thus enabling them to contact the sides of plates of different lengths and widths and achieve clamping and fixing.

[0027] Each bidirectional lead screw 5 has a set of clamping plates 6 threadedly connected to its outer wall, which can clamp the plate from all sides. Each set of clamping plates 6 has a set of moving blocks 20 fixedly connected to its bottom end. The moving blocks 20 are threadedly connected to the outer wall of the bidirectional lead screw 5. Each set of clamping plates 6 has a rubber layer 21 fixedly installed on its inner wall. Both ends of each set of clamping plates 6 can move inside the guide groove 18.

[0028] A set of movable blocks 20 moves left and right or back and forth along the direction of the guide groove 18, causing the clamping plates 6 to move closer or further apart, clamping and fixing the four side walls of the plate surface. The rubber layer 21 contacts and clamps the side walls of the plate surface, which can play a fixing role while avoiding damage to the plate surface.

[0029] Two sets of electric guide rails 7 are arranged parallel to each other on the inner wall of the straight cylinder 2 above the clamping plate 6. Each set of electric guide rails 7 is movably equipped with a coarse sand polishing component and a fine sand polishing component. Both the coarse sand polishing component and the fine sand polishing component include a connecting plate 8 and a polishing frame 9. The two sets of electric guide rails 7 are arranged parallel to each other on the inner wall of the straight cylinder 2. Electric sliders 22 are slidably arranged on both sets of electric guide rails 7. The two ends of the connecting plate 8 are fixedly arranged on the outer wall of the electric slider 22. The coarse sand polishing wheel 11 and the fine sand polishing wheel 12 are rotatably arranged inside the two polishing frames 9 respectively.

[0030] First, the coarse sand polishing component is used to coarsely polish the board surface, and then the fine sand polishing component is used to continue to finely polish the board surface. The electric guide rail 7 is started so that the electric slider 22 can drive the connecting plate 8 to move back and forth along the electric guide rail 7.

[0031] Polishing motors 24 are fixedly mounted on the outer wall of the polishing frame 9. Coarse polishing wheels 11 and fine polishing wheels 12 are respectively mounted on the output ends of the two polishing motors 24. The lowest points of the coarse and fine polishing wheels 11 and 12 are on the same horizontal plane. The abrasive grain size of the coarse polishing wheel 11 is lower than that of the fine polishing wheel 12. The coarse polishing wheel 11 has a lower mesh size, typically 40-150 mesh, with large and coarse abrasive grains. The fine polishing wheel 12 has a higher mesh size, typically 180-400 mesh or higher, with finer abrasive grains, eliminating scratches left by the coarse abrasive and making the surface smoother, preparing for subsequent painting or waxing.

[0032] While the connecting plate 8 moves back and forth, the polishing motor 24 is started, which drives the coarse polishing wheel 11 to rotate and perform coarse polishing on the contacted plate surface. After the coarse polishing is completed, the polishing frame 9 is moved to the outermost edge, and the plate surface contacted by the fine polishing wheel 12 is used for fine polishing. The plate surface does not need to move between the coarse polishing machine and the fine polishing machine. Increasing the fixed number of times can improve the polishing efficiency and quickly complete the purpose of coarse and fine polishing.

[0033] The connecting plate 8 is provided with several positioning holes 10. The polishing frame 9 can be detachably connected with different positioning holes 10. Several positioning holes 10 are arranged vertically and pass through the connecting plate 8. The polishing frame 9 is also provided with another positioning hole 10. The positioning hole 10 on the polishing frame 9 can be detachably installed with different positioning holes 10 on the connecting plate 8 through the bolt assembly 23.

[0034] Depending on the thickness of the board surface, the height of the polishing frame 9 can be adjusted so that the coarse polishing wheel 11 and the fine polishing wheel 12 can contact the board surface of different thicknesses, and polish the board surface of different thicknesses. The polishing frame 9 can be moved so that the positioning holes 10 on the polishing frame 9 can be aligned with the different positioning holes 10 on the connecting plate 8. During installation, the bolt assembly 23 includes a threaded rod and a nut. The threaded rod can align and connect the polishing frame 9 and the connecting plate 8, and then the nut is used to fix it so that the polishing frame 9 is fixed at different heights on the connecting plate 8.

[0035] Below the two bidirectional lead screws 5, four sets of dust removal components are also provided. Each set of dust removal components includes a dust collection hood 13. The inner and outer ends of the dust collection hood 13 are respectively provided with a filter frame 14 and a suction fan 15. The four dust collection hoods 13 are embedded in the four sides of the straight cylinder 2 and are located around the conical outer shell 17. The filter frame 14 is fixedly installed on the inner wall of the straight cylinder 2 to prevent wood dust from being sucked in by the dust collection hoods 13. The suction fan 15 is fixedly installed on the operating table 1 and is connected to the dust collection hoods 13. A debris flow port 25 is provided between the outer wall of the conical outer shell 17 and the inner side wall of the straight cylinder 2. A collection box 26 is provided below the debris flow port 25.

[0036] The suction fan 15 is a common structure in the prior art that can draw in a lot of air, so that the dust and debris generated during polishing move in the direction of the suction of the dust hood 13. After hitting the filter frame 14, the dust and debris fall into the dust flow port 25 below and eventually collect in the collection box 26. The air filtered by the filter frame 14 is then drawn in by the suction fan 15 and discharged along its exhaust end.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A panel polishing device for chair processing, comprising an operating table (1), characterized in that: An open-ended cylindrical tube (2) is embedded in the operating table (1). Inside the cylindrical tube (2), a support platform (4) is fixedly mounted via several horizontal columns (3). Two vertical double-acting screws (5) are rotatably mounted on the support platform (4). Each double-acting screw (5) has a set of clamping plates (6) threadedly connected to its outer wall, which can clamp the plate around its perimeter. Two sets of electric guide rails (7) are parallelly mounted on the inner wall of the cylindrical tube (2) above the clamping plates (6). Each set of electric guide rails (7) has a coarse sand polishing component and a fine sand polishing component movably mounted on it. Both the optical component and the fine sand polishing component include a connecting plate (8) and a polishing frame (9). The connecting plate (8) is provided with several positioning holes (10). The polishing frame (9) can be detachably connected to different positioning holes (10). The two polishing frames (9) are respectively provided with a coarse sand polishing wheel (11) and a fine sand polishing wheel (12) inside. Four sets of dust removal components are also provided below the two bidirectional lead screws (5). Each set of dust removal components includes a dust suction hood (13). The inner and outer ends of the dust suction hood (13) are respectively provided with a filter screen frame (14) and a suction fan (15).

2. The panel polishing device for chair processing according to claim 1, characterized in that: The support platform (4) includes a fixedly connected cube (16) and a conical shell (17). Two bidirectional screw rods (5) pass through the cube (16) one above the other and are rotatably set. Several horizontal columns (3) are fixedly connected at both ends to the outer wall of the cube (16) and the inner wall of the straight cylinder (2). Guide grooves (18) are fixedly set on the inner walls of the several horizontal columns (3). One end of the two bidirectional screw rods (5) is rotatably set on the inner wall of the straight cylinder (2), and the other end passes through the side wall of the straight cylinder (2) and is fixedly set with a crank handle (19).

3. The panel polishing device for chair processing according to claim 2, characterized in that: A set of clamping plates (6) are fixedly connected to a set of moving blocks (20) at the bottom end. The set of moving blocks (20) are threadedly connected to the outer wall of the bidirectional screw (5). The inner wall of the set of clamping plates (6) is fixedly provided with a rubber layer (21). Both ends of the set of clamping plates (6) can move inside the guide groove (18).

4. The panel polishing device for chair processing according to claim 1, characterized in that: Two sets of electric guide rails (7) are arranged parallel to each other on the inner wall of the straight cylinder (2). Electric sliders (22) are slidably arranged on both sets of electric guide rails (7). The two ends of the connecting plate (8) are fixed on the outer wall of the electric sliders (22). Several positioning holes (10) are arranged vertically through the connecting plate (8). Another positioning hole (10) is also provided on the polishing frame (9). The positioning hole (10) on the polishing frame (9) can be detached and installed from the different positioning holes (10) on the connecting plate (8) by means of bolt assembly (23).

5. The panel polishing device for chair processing according to claim 4, characterized in that: A polishing motor (24) is fixedly installed on the outer wall of the polishing frame (9). The coarse polishing wheel (11) and the fine polishing wheel (12) are respectively installed on the output ends of the two polishing motors (24). The lowest ends of the coarse polishing wheel (11) and the fine polishing wheel (12) are on the same horizontal plane. The abrasive particle size of the coarse polishing wheel (11) is lower than that of the fine polishing wheel (12).

6. The panel polishing device for chair processing according to claim 2, characterized in that: Four dust hoods (13) are embedded in the side walls of the straight cylinder (2) and are set around the conical shell (17). The filter frame (14) is fixedly set on the inner wall of the straight cylinder (2) to prevent wood dust from being sucked in by the dust hoods (13). The fan (15) is fixedly set on the operating table (1) and is connected to the dust hoods (13). A debris flow port (25) is set between the outer wall of the conical shell (17) and the inner side wall of the straight cylinder (2). A collection box (26) is set below the debris flow port (25).

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