Wood board bending method

Abstract

The invention provides a wood board bending method, and belongs to the technical field of board production. The technical problems that in an existing wood plate bending method, the bent position is prone to cracking, and the bending forming precision is poor are solved. The wood board bending method comprises the six steps of positioning and conveying, rubberizing for crack resistance, slotting and glue injection, synchronous bending, material pressing and shaping and trimming and polishing. According to the wood board bending device, the bending position of a wood board can be prevented from cracking, the consistency and straightness of the bending angle are remarkably improved, rebound deformation is restrained, and therefore a high-precision and high-quality bent wood board product is obtained; and the machine can be used for machining wood boards with large widths and is high in adaptability and adjustment capacity to the wood boards with different widths and thicknesses.

Description

Technical Field

[0001] The invention belongs to the technical field of board production, and in particular relates to a board bending method. Background Art

[0002] Bending wood boards is a key process step in manufacturing complex curved wood products. Traditional wood board bending methods usually involve steps such as grooving, gluing, and bending to shape. For example, based on the process method of the bending and forming machine disclosed in the invention patent with application number 201621160467.3, its process usually includes steps such as grooving, gluing, loading and forming. However, the existing bending methods have obvious defects in practical applications: First, in the bending area of ​​the wood board, since the wood fibers are easily broken under bending tensile stress, cracking problems at the bends occur frequently, seriously affecting the quality and yield of the finished product; secondly, for the bending of longer boards, due to uneven force or unstable positioning, it often leads to inconsistent bending angles, poor straightness (such as wavy deformation), and large rebound deformation after forming, and the overall bending forming accuracy is low. These defects limit the high-quality and efficient production of complex curved wood products, especially large-width and long-sized boards. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the object of the present invention is to provide a wooden board bending method that can prevent cracking at the bending point and has high bending accuracy.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A method for bending a wooden board, characterized by comprising the following steps:

[0006] S1. Positioning and Conveying: The wood board is transported horizontally by the conveying mechanism. After entering the conveying mechanism, the wood board is positioned longitudinally by the positioning mechanism to the predetermined position;

[0007] S2. Gluing to prevent cracking: Apply tape to the lower surface of the wood panel in the area to be bent. This pre-applying tape to the surface of the area to be bent provides adhesion and stress dispersion, fundamentally strengthening the mechanical properties of the bend line area. This effectively disperses and resists bending and tensile stress, significantly reducing the risk of cracking during the bending process and improving the yield rate of the finished product.

[0008] S3. Grooving and Gluing: Grooves are created on the upper surface of the wood where the tape is applied, and glue is injected into the grooves. The grooves relieve stress concentration points within the wood, providing space for bending and deformation. The glue injected into the grooves cures during the bending process and after shaping, filling gaps, bonding internal fibers, increasing structural integrity, and resisting rebound. This further enhances the strength and shape stability of the bent area, reducing failures caused by internal defects.

[0009] S4. Synchronous Bending: The wooden board is fixed with its end face or center hole as a reference, and a bending mechanism with a long support plate is driven to synchronously rotate the bent portion of the board from a horizontal state to the target angle. The bending is performed using a rigidly connected synchronous drive structure, ensuring that the bending force applied to the bent portion of the long board is highly consistent in magnitude and timing along its entire length. This synchronization completely eliminates local stress concentration or delayed deformation caused by asynchronous multi-point drive, effectively preventing straightness issues such as wavy deformation in the long board after bending, and significantly improving the consistency of the bending angle and the overall linear accuracy of the bending.

[0010] S5. Pressing and shaping: Applying a restraining force to the bent portion, including pressing down on the upper side of the main body, applying an inward clamping force to the outer side / lower part of the bent portion, and pressing down on the upper side of the bent portion. By simultaneously applying coordinated pressure in three directions on the upper side of the main body of the board, the outer side (upper and lower) of the bent portion, and the upper side of the bent portion, a three-dimensional constraint network is formed. This network can fully suppress various rebound deformation modes (such as upward rebound, angle opening, lateral distortion, etc.) caused by factors such as material elasticity and gravity, allowing the bent portion to fully creep and relax under pressure and stabilize its shape, significantly improving the stability of the bending angle and the accuracy of maintaining complex curved surface contours.

[0011] S6. Trimming and Grinding: Trimming and surface grinding are performed on the edges of the bent parts after forming. Trimming and grinding is performed immediately after pressing and forming to directly remove burrs, unevenness, or excess rubber generated on the edges during the bending process. This step is integrated into the continuous process, eliminating the need to remove the semi-finished product from the production line for secondary processing. This not only improves processing efficiency, but more importantly, eliminates the risk of unexpected deformation of the bent part during secondary handling and positioning, ensuring the edge quality and surface finish of the final product.

[0012] Preferably, during the execution of steps S1 to S5, the wood planks are transported sequentially through each workstation via a conveying mechanism comprising an upper roller assembly and a lower roller assembly, wherein the lower roller assembly is mounted on the left side of the base, and the upper roller assembly is mounted above the lower roller assembly via a single-sided cantilever gantry, which is fixed to the right side of the base. The use of a side-swinging gantry overcomes the physical limitations of the traditional double-sided support gantry structure on the width of the wood planks, allowing for continuous and stable transportation of even ultra-wide wood planks.

[0013] Preferably, in step S1, the upper roller assembly is connected to the single-side swing arm gantry via a vibration damper. The vibration damper isolates conveying vibration, avoids positioning deviation caused by plate bouncing, and protects the support structure, thereby extending the life of the equipment.

[0014] In step S1, a plate support frame for supporting the wooden board is provided on the left side of the base, and the support surface of the plate support frame is flush with the upper edge of the lower roller assembly. The use of a side-swinging gantry and a plate support frame in combination completely breaks through the physical limitations of the traditional double-sided support gantry structure on the width of the wooden board, allowing for continuous and stable transportation of ultra-wide wooden boards. The design of the left auxiliary support frame being flush with the upper edge of the lower roller assembly provides the necessary support for the left side of the wooden board, ensuring the smoothness of the transportation process, avoiding positional deviation or surface damage of the wooden board due to overhang or vibration, and laying the foundation for subsequent precise positioning and high-quality bending. This transportation method is the key to achieving continuous and high-precision bending of large-width wooden boards.

[0015] Preferably, the reinforcing tape in step S2 comprises a substrate layer and an adhesive layer, wherein the substrate layer is a fiber cloth or a polymer film, which is used to enhance the tensile strength of the wood, and the adhesive layer is used to adhere to the surface of the wood board and fill the gaps in the wood fibers. The substrate layer (such as fiber cloth) directly enhances the tensile strength of the wood, and the adhesive layer penetrates into the fiber gaps, fills the micro-gaps and disperses the stress, thereby suppressing the fiber breakage on the bending and stretching side from the root, significantly reducing the risk of cracking.

[0016] Preferably, in step S2, the tape is automatically guided to cover the area to be bent, the tape is fixed to the lower side of the wooden board by a pressing roller, and then the tape is automatically cut.

[0017] Preferably, in step S3, a forming cutter head is used to form a groove on the upper side of the wooden board to facilitate bending. At the same time, a dust suction device is provided behind the forming cutter head to suck away impurities such as sawdust and dust generated during the forming of the groove. The dust suction device can suck away impurities such as sawdust and dust generated during the forming of the groove, thereby preventing these sawdust and dust from affecting subsequent glue injection and bending forming, thereby improving the yield rate.

[0018] Preferably, in the synchronous bending of step S4, a vertical downward positioning and pressing force is applied above the main area near the bending part of the wooden board to firmly press the main part of the wooden board to the predetermined work station; the bending mechanisms on both sides realize synchronous movement of the support plate through rigid connecting plates and multiple connecting rods, and the length of the connecting rods is adjustable to adapt to wooden boards of different thicknesses; the bending bracket realizes longitudinal movement through the cooperation of the bending slide rail and the bending slider. The compression of the main area can prevent the wooden board from moving and ensure the position accuracy and straightness of the bending line; by adjusting the length of the connecting rod and adjusting the longitudinal position of the bending bracket, the initial angle of the support plate and the bending force point can be flexibly adjusted, so that the same equipment can adapt to boards of different thicknesses and curvatures, improving processing adaptability; especially the bending consistency control effect of the end and middle of the long board is significant.

[0019] Preferably, the clamping force applied to the upper and lower portions of the outer side of the bent portion in step S5 is provided by upper and lower ejection wheels, respectively, and the upper and lower ejection wheels are longitudinally adjustable. The adjustable upper and lower ejection wheels can accurately match wood boards of different thicknesses and curvatures, avoid pressure deviation, and ensure the stability of the pressing and shaping.

[0020] The equipment involved in this method of bending a wooden board includes a base and a conveying mechanism that runs through a processing area, wherein a positioning mechanism, a tape-applying mechanism, a grooving mechanism, a glue-injecting mechanism, a bending mechanism, a pressing and shaping mechanism, and a trimming and grinding mechanism are sequentially arranged along the conveying direction of the board; the conveying mechanism includes an upper roller assembly, a lower roller assembly, and a plurality of single-sided cantilevered gantries that are spaced apart along the conveying direction of the board, wherein the lower roller assembly is arranged on the base, and the upper roller assembly is located above the lower roller assembly and is fixedly connected to the single-sided cantilevered gantry.

[0021] The above-mentioned positioning mechanism includes a positioning base, a positioning slide rail, and a positioning slide plate. The positioning slide plate can move back and forth in the longitudinal direction along the positioning slide rail. The positioning base is provided with a positioning drive motor and a positioning drive screw for driving the positioning slide plate to move. The inner side surface of the positioning slide plate can abut against the outer side surface of the wooden board.

[0022] The above-mentioned tape-applying mechanism includes a working box, the top surface of which is a working table with an operating window; a winding roller, a movable roller, a front roller, a rear roller and a scissors are arranged on the bottom plate of the working box, and the tape is guided to the front roller by the winding roller, and then pressed to the area of ​​the wooden board to be bent by the rear roller after passing through the winding roller; the upper end of the rear roller is higher than the working table; a glue-applying slide rail is longitudinally arranged at the bottom of the working box, and a glue-applying slider that can move longitudinally along the glue-applying slide rail is fixedly connected to the lower side of the bottom plate; the movable roller is vertically moved by a movable roller driving member; the scissors include a fixed blade and a movable blade pushed by a second scissors driving member, the movable blade moves upward to cut the tape, and the scissors as a whole are connected to the first scissors driving member through a mounting plate to achieve longitudinal displacement.

[0023] The glue injection mechanism includes a glue injection head, a glue injection pipe, a glue injection pump, a glue tank and a glue injection bracket. The glue injection head is installed on the glue injection bracket. The glue injection pump can transport glue from the glue tank through the glue injection pipe to the glue injection head and inject it into the groove opened by the slotting mechanism.

[0024] The above-mentioned bending mechanism comprises two bending brackets arranged at intervals along the conveying direction, and each bending bracket is equipped with an arc-shaped bending gear disk, and convex teeth are provided on both sides of the bending gear disk, the outer side of which meshes with the driving gear and the inner side meshes with the driven gear, and the driving gear and the driven gear can be rotatably fixed to the bending mounting plate, and the driving gear is connected to the bending driving member on the bending mounting plate; a connecting plate is rigidly connected between the bending mounting plates on both sides, and a plurality of connecting rods are arranged at intervals along the conveying direction on the connecting plate, and the inner end of each connecting rod is fixedly connected to the back plate; when the driving gear moves from the lower end to the upper end along the bending gear disk, it drives the connecting plate and the back plate to synchronously change from a horizontal state to a vertical state; a plurality of grooves are arranged at intervals on the back plate along the conveying direction of the plate; the above-mentioned bending mechanism also includes the main board positioning structure, which The positioning structure includes a positioning bracket, a positioning cylinder and a positioning member, the positioning cylinder is installed on the positioning bracket, the positioning member is fixedly connected to the driving shaft of the positioning cylinder, and the positioning cylinder can drive the positioning member to reciprocate in the vertical direction and abut against the wooden board body; an arc guide rail is provided on the inner side of the bending toothed disc, and the bending mounting plate is connected with an inner guide wheel and an outer guide wheel distributed in a staggered manner, and the inner guide wheel and the outer guide wheel roll and guide along the arc guide rail; a connecting rod driving member is provided on the connecting plate to drive the connecting rod to reciprocate along its axial direction; the bending bracket is fixed on the base plate, and a bending slide rail and a base plate driving member are provided on the base plate. The lower side of the base plate is fixedly connected with a bending slider cooperating with the bending slide rail, and the base plate driving member can drive the bending bracket to move along the bending slide rail, and the bending slide rail is arranged longitudinally.

[0025] The above-mentioned pressing and shaping mechanism includes a vertical mounting plate and a horizontal mounting plate; the vertical mounting plate is provided with a plurality of lower pressing cylinders at intervals along the conveying direction, and each lower pressing cylinder drives the lower pressing wheel to press the upper side of the wooden board main body; the horizontal mounting plate is provided with a plurality of upper pushing wheels and lower pushing wheels at intervals along the conveying direction, and the upper pushing wheels abut the upper part of the outer side surface of the bending part of the wooden board, and the plurality of pushing cylinders drive the lower pushing wheels abut the lower part of the outer side surface of the bending part; the vertical mounting plate is also provided with a plurality of upper pressing cylinders, and each upper pressing cylinder drives the upper pressing wheel to press the upper side surface of the bending part; the upper pushing wheel is connected to the elongated pushing wheel connecting plate through a pushing rotating shaft, and the pushing wheel connecting plate is provided with a first pushing wheel connecting plate at intervals along its length direction. A strip hole, the ejecting wheel connecting plate is fixedly connected to the horizontal mounting plate by a fastener cooperating with the first strip hole; connecting parts are provided on both sides of the ejecting cylinder, and a second strip hole is provided on the connecting part, and the driving shaft of the ejecting cylinder and the ejecting wheel connecting plate are both arranged obliquely to the inner side surface of the horizontal mounting plate; a first pressing slider is provided under the horizontal mounting plate, and the first pressing slider cooperates with the first pressing slide rail longitudinally arranged on the support frame, and is driven by the first pressing driving member for longitudinal displacement; a second pressing slider is provided on the vertical mounting plate, and the second pressing slider cooperates with the second pressing slide rail fixed on the upper roller assembly, and is driven by the second pressing driving member for vertical displacement.

[0026] Compared with the prior art, the technical effects of the present invention are:

[0027] The present invention can prevent cracking at the bending portion of the wooden board, significantly improve the consistency and straightness of the bending angle, and suppress rebound deformation, thereby obtaining a high-precision, high-quality bent wooden board product.

[0028] The present invention can also be used to process wooden boards with a larger width, and has a strong adaptability and adjustment capability to wooden boards with different widths and thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a flow chart of the steps of the present invention.

[0030] Figure 2 It is a schematic diagram of the overall structure of the wood board bending equipment of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the tape applying mechanism of the present invention.

[0032] Figure 4 It is a structural schematic diagram of the bending mechanism of the present invention.

[0033] Figure 5 It is a partial enlarged view of the positioning bracket in the bending mechanism of the present invention.

[0034] Figure 6 It is a structural schematic diagram of the material pressing and shaping mechanism of the present invention.

[0035] Figure 7 It is a schematic diagram of the horizontal mounting plate driving structure of the present invention.

[0036] Figure 8 It is a schematic diagram of the vertical mounting plate driving structure of the present invention.

[0037] Figure 9 It is a schematic diagram of the overall structure of the gantry of the present invention.

[0038] Figure 10 It is a partial enlarged view of the end portion of the conveying mechanism of the present invention.

[0039] In the figure, 1. base; 11. plate support frame; 2. positioning mechanism; 3. tape applying mechanism; 31. working box; 311. working table; 312. operation window; 32. winding roller; 33. front roller; 34. movable roller; 35. rear roller; 36. scissors; 4. slotting mechanism; 5. glue injection mechanism; 6. bending mechanism; 61. bending bracket; 62. connecting plate; 621. connecting rod driving member; 63. connecting rod; 64. backing plate; 65. base plate; 651. bending slider; 66. bending slide rail; 67. base plate driving member; 7. pressing and shaping mechanism; 71. vertical mounting plate ;711, second pressing slider;712, second pressing slide rail;713, second pressing drive member;72, horizontal mounting plate;721, first pressing slider;722, first pressing slide rail;723, first pressing drive member;73, lower pressing wheel;74, upper pressing wheel;75, upper ejecting wheel;76, lower ejecting wheel;761, ejecting cylinder;77, support frame;8, trimming and grinding mechanism;9, single-sided cantilever gantry;91, vertical supporting part;92, horizontal connecting part;93, vertical hanging part;94, hanging mounting plate;101, upper roller assembly;102, lower roller assembly. DETAILED DESCRIPTION

[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0041] The wood board bending method comprises the following steps:

[0042] S1 positioning transport: transport the board horizontally through the conveying mechanism, the board enters the conveying mechanism after the longitudinal positioning mechanism 2 is positioned to the predetermined station;

[0043] S2. Gluing to prevent cracking: Apply tape to the lower surface of the wood panel in the area to be bent. This pre-applying tape to the surface of the area to be bent provides adhesion and stress dispersion, fundamentally strengthening the mechanical properties of the bend line area. This effectively disperses and resists bending and tensile stress, significantly reducing the risk of cracking during the bending process and improving the yield rate of the finished product.

[0044] S3. Grooving and Gluing: Grooves are created on the upper surface of the wood where the tape is applied, and glue is injected into the grooves. The grooves relieve stress concentration points within the wood, providing space for bending and deformation. The glue injected into the grooves cures during the bending process and after shaping, filling gaps, bonding internal fibers, increasing structural integrity, and resisting rebound. This further enhances the strength and shape stability of the bent area, reducing failures caused by internal defects.

[0045] S4. Synchronous Bending: The plank is fixed with its end face or center hole as a reference, and a bending mechanism 6 with a long support plate 64 is driven to synchronously rotate the bent portion of the plank from a horizontal state to the target angle. Bending is performed using a rigidly connected synchronous drive structure, ensuring that the magnitude and timing of the bending force applied to the bent portion of the long plank are highly consistent along its entire length. This synchronization completely eliminates local stress concentration or delayed deformation caused by asynchronous multi-point drive, effectively preventing straightness problems such as wavy deformation of the long plank after bending, and significantly improving the consistency of the bending angle and the overall linear accuracy of the bending.

[0046] S5. Pressing and shaping: Applying a restraining force to the bent portion, including pressing down on the upper side of the main body, applying an inward clamping force to the outer side / lower part of the bent portion, and pressing down on the upper side of the bent portion. By simultaneously applying coordinated pressure in three directions on the upper side of the main body of the board, the outer side (upper and lower) of the bent portion, and the upper side of the bent portion, a three-dimensional constraint network is formed. This network can fully suppress various rebound deformation modes (such as upward rebound, angle opening, lateral distortion, etc.) caused by factors such as material elasticity and gravity, allowing the bent portion to fully creep and relax under pressure and stabilize its shape, significantly improving the stability of the bending angle and the accuracy of maintaining complex curved surface contours.

[0047] S6. Trimming and Grinding: Trimming and surface grinding are performed on the edges of the bent parts after forming. Trimming and grinding is performed immediately after pressing and forming to directly remove burrs, unevenness, or excess rubber generated on the edges during the bending process. This step is integrated into the continuous process, eliminating the need to remove the semi-finished product from the production line for secondary processing. This not only improves processing efficiency, but more importantly, eliminates the risk of unexpected deformation of the bent part during secondary handling and positioning, ensuring the edge quality and surface finish of the final product.

[0048] Preferably, during the execution of steps S1 to S5, the wood planks are transported sequentially through each workstation via a conveying mechanism comprising an upper roller assembly 101 and a lower roller assembly 102, wherein the lower roller assembly 102 is mounted on the left side of the base 1, and the upper roller assembly 101 is mounted above the lower roller assembly 102 via a single-sided cantilever gantry 9, which is fixed to the right side of the base 1. The use of a side-swinging gantry overcomes the physical limitations of the traditional double-sided support gantry structure on the width of the wood planks, allowing for continuous and stable transportation of even ultra-wide wood planks.

[0049] Preferably, in step S1, the upper roller assembly 101 is connected to the single-side swing arm gantry via a vibration damper. The vibration damper isolates conveying vibration, avoids positioning deviation caused by plate bouncing, and protects the support structure, thereby extending the life of the equipment.

[0050] In step S1, a plate support frame 11 for supporting wooden boards is provided on the left side of the base 1, and the support surface of the plate support frame 11 is flush with the upper edge of the lower roller assembly 102. The use of a side-swinging gantry and the plate support frame 11 in combination completely breaks through the physical limitations of the traditional double-sided support gantry structure on the width of wooden boards, allowing ultra-wide wooden boards to be transported continuously and stably; the design of the left auxiliary support frame 77 being flush with the upper edge of the lower roller assembly 102 provides the necessary support for the left side of the wooden board, ensuring the smoothness of the conveying process, avoiding position deviation or surface damage of the wooden board due to overhang or vibration, and laying the foundation for subsequent precise positioning and high-quality bending. This conveying method is the key guarantee for achieving continuous and high-precision bending of large-width boards.

[0051] Preferably, the reinforcing tape in step S2 comprises a substrate layer and an adhesive layer. The substrate layer is a fiber cloth or polymer film, which is used to enhance the tensile strength of the wood, and the adhesive layer is used to adhere to the surface of the wood board and fill the gaps in the wood fibers. The substrate layer (such as fiber cloth) directly enhances the tensile strength of the wood, and the adhesive layer penetrates into the fiber gaps, fills the micro-gaps and disperses the stress, thereby suppressing the fiber breakage on the bending and stretching side from the root, significantly reducing the risk of cracking.

[0052] Preferably, in step S2, the tape is automatically guided to cover the area to be bent, the tape is fixed to the lower side of the wooden board by a pressing roller, and then the tape is automatically cut.

[0053] Preferably, in step S3, a forming cutter head is used to form a groove on the upper side of the wooden board to facilitate bending. At the same time, a dust suction device is provided behind the forming cutter head to suck away impurities such as sawdust and dust generated during the forming of the groove. The dust suction device can suck away impurities such as sawdust and dust generated during the forming of the groove, thereby preventing these sawdust and dust from affecting subsequent glue injection and bending forming, thereby improving the yield rate.

[0054] Preferably, in the synchronous bending of step S4, a vertical downward positioning and pressing force is applied above the main area near the bending part of the wooden board to firmly press the main part of the wooden board on the predetermined work station; the bending mechanisms 6 on both sides realize the synchronous movement of the support plate 64 through the rigid connecting plate 62 and multiple connecting rods 63, and the length of the connecting rod 63 is adjustable to adapt to wooden boards of different thicknesses; the bending bracket 61 realizes longitudinal movement through the cooperation of the bending slide rail 66 and the bending slider 651. The compression of the main area can prevent the wooden board from moving and ensure the position accuracy and straightness of the bending line; by adjusting the length of the connecting rod 63 and adjusting the longitudinal position of the bending bracket 61, the initial angle of the support plate 64 and the bending force application point can be flexibly adjusted, so that the same equipment can adapt to boards of different thicknesses and curvatures, thereby improving processing adaptability; in particular, the bending consistency control effect of the end and middle parts of long boards is significant.

[0055] Preferably, the clamping force applied to the upper and lower portions of the outer surface of the bent portion in step S5 is provided by upper and lower ejection wheels 75 and 76, respectively, and the upper and lower ejection wheels 75 and 76 are longitudinally adjustable. The adjustable upper and lower ejection wheels 75 and 76 can accurately match wood boards of different thicknesses and curvatures, avoid pressure deviation, and ensure the stability of the press forming.

[0056] The equipment involved in this wood board bending method includes a base 1 and a conveying mechanism that runs through the processing area. A positioning mechanism 2, a tape-applying mechanism 3, a grooving mechanism 4, a glue injection mechanism 5, a bending mechanism 6, a pressing and shaping mechanism 7, and a trimming and grinding mechanism 8 are arranged in sequence along the conveying direction of the board; the conveying mechanism includes an upper roller assembly 101, a lower roller assembly 102, and a plurality of single-sided cantilever gantries 9 arranged at intervals along the conveying direction of the board, the lower roller assembly 102 is arranged on the base 1, and the upper roller assembly 101 is located above the lower roller assembly 102 and is fixedly connected to the single-sided cantilever gantry 9.

[0057] The above-mentioned positioning mechanism 2 includes a positioning base, a positioning slide rail, and a positioning slide plate. The positioning slide plate can move back and forth in the longitudinal direction along the positioning slide rail. The positioning base is provided with a positioning drive motor and a positioning drive screw for driving the positioning slide plate to move. The inner side surface of the positioning slide plate can abut against the outer side surface of the wooden board.

[0058] The above-mentioned tape-applying mechanism 3 includes a working box 31, the top surface of which is a working table 311 with an operating window 312; a winding roller 32, a movable roller 34, a front roller 33, a rear roller 35 and a pair of scissors 36 are arranged on the bottom plate of the working box 31. The tape is guided to the front roller 33 by the winding roller 32, and then pressed to the area to be bent of the wooden board by the rear roller 35 after passing through the winding roller 32; the upper end of the rear roller 35 is higher than the working table 311; a glue-applying slide rail is longitudinally arranged at the bottom of the working box 31, and a glue-applying slider that can move longitudinally along the glue-applying slide rail is fixedly connected to the lower side of the bottom plate; the movable roller 34 is vertically moved by the movable roller driving member; the scissors 36 include a fixed blade and a movable blade driven by the second scissors 36 driving member. The movable blade moves upward to cut the tape, and the scissors 36 as a whole are connected to the first scissors 36 driving member through the mounting plate to achieve longitudinal displacement.

[0059] The glue injection mechanism 5 includes a glue injection head, a glue injection pipe, a glue injection pump, a glue tank and a glue injection bracket. The glue injection head is installed on the glue injection bracket. The glue injection pump can transport glue from the glue tank through the glue injection pipe to the glue injection head and inject it into the groove opened by the slotting mechanism 4.

[0060] The above-mentioned bending mechanism 6 includes two bending brackets 61 arranged at intervals along the conveying direction, and each bending bracket 61 is installed with an arc-shaped bending gear disk, and convex teeth are provided on both sides of the bending gear disk, the outer side of which meshes with the driving gear and the inner side meshes with the driven gear. The driving gear and the driven gear can be rotatably fixed to the bending mounting plate, and the driving gear is connected to the bending driving member on the bending mounting plate; a connecting plate 62 is rigidly connected between the bending mounting plates on both sides, and a plurality of connecting rods 63 are arranged on the connecting plate 62 at intervals along the conveying direction, and the inner end of each connecting rod 63 is fixedly connected to the support plate 64; when the driving gear moves from the lower end to the upper end along the bending gear disk, it drives the connecting plate 62 and the support plate 64 to synchronously change from a horizontal state to a vertical state; a plurality of grooves are arranged on the support plate 64 at intervals along the conveying direction of the plate; the above-mentioned bending mechanism 6 also includes a mainboard positioning structure, which The positioning structure includes a positioning bracket, a positioning cylinder and a positioning member. The positioning cylinder is installed on the positioning bracket, and the positioning member is fixedly connected to the driving shaft of the positioning cylinder. The positioning cylinder can drive the positioning member to move back and forth in the vertical direction and abut against the wooden board body; an arc guide rail is arranged on the inner side of the bending gear disc, and the bending mounting plate is connected with inner guide wheels and outer guide wheels that are staggered, and the inner guide wheels and the outer guide wheels roll and guide along the arc guide rail; a connecting rod 63 driving member 621 is provided on the connecting plate 62 to drive the connecting rod 63 to move back and forth along its axial direction; the bending bracket 61 is fixed on the base plate 65, and a bending slide rail 66 and a base plate driving member 67 are provided on the base 1. The lower side of the base plate 65 is fixedly connected with a bending slider 651 that cooperates with the bending slide rail 66. The base plate driving member 67 can drive the bending bracket 61 to move along the bending slide rail 66, and the bending slide rail 66 is arranged along the longitudinal direction.

[0061] The above-mentioned pressing and shaping mechanism 7 includes a vertical mounting plate 71 and a horizontal mounting plate 72; the vertical mounting plate 71 is provided with a plurality of lower pressing cylinders at intervals along the conveying direction, and each lower pressing cylinder drives the lower pressing wheel 73 to press the upper side of the wooden board body; the horizontal mounting plate 72 is provided with a plurality of upper lifting wheels 75 and lower lifting wheels 76 at intervals along the conveying direction, and the upper lifting wheel 75 abuts against the upper outer side surface of the bent portion of the wooden board, and a plurality of lifting cylinders 761 drive the lower lifting wheel 76 abut against the lower outer side surface of the bent portion; the vertical mounting plate 71 is also provided with a plurality of upper pressing cylinders, and each upper pressing cylinder drives the upper pressing wheel 74 to press the upper side surface of the bent portion; the upper lifting wheel 75 is connected to the long strip lifting wheel connecting plate 62 through the lifting shaft, and the lifting wheel connecting plate 62 is provided with first strip holes at intervals along its length direction. The ejecting wheel connecting plate 62 is fixedly connected to the horizontal mounting plate 72 by a fastener that cooperates with the first strip hole; a connecting part is provided on both sides of the ejecting cylinder 761, and a second strip hole is provided on the connecting part. The driving shaft of the ejecting cylinder 761 and the ejecting wheel connecting plate 62 are both inclined to the inner side surface of the horizontal mounting plate 72; a first pressing slider 721 is provided under the horizontal mounting plate 72, and the first pressing slider 721 cooperates with the longitudinally arranged first pressing slide rail 722 on the support frame 77, and is driven by the first pressing driving member 723 for longitudinal displacement; a second pressing slider 711 is provided on the vertical mounting plate 71, and the second pressing slider 711 cooperates with the second pressing slide rail 712 fixed on the upper roller assembly 101, and is driven by the second pressing driving member 713 for vertical displacement.

[0062] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection defined by the claims of the present invention.

Claims

1. A method for bending a wooden board, characterized in that: The following steps are involved: S1. Positioning and transporting: The wood board is transported horizontally by the transport mechanism. After the wood board enters the transport mechanism, it is positioned longitudinally to a predetermined station by the positioning mechanism (2); S2. Gluing to prevent cracking: Apply tape to the lower surface of the board in the area to be bent; S3. Grooving and Gluing: Create grooves on the upper surface of the wood in the tape area and then inject glue into the grooves; S4. Synchronous bending: The end face or the center hole is used as a reference to fix the board, and the bending mechanism (6) having a long strip of support plate (64) is driven to synchronize the bending portion of the board from the horizontal state to the target angle; S5. Pressing and shaping: Applying a restraining force to the bent portion, including pressing down the upper side of the main body, applying an inward clamping force to the outer side / lower part of the bent portion, and pressing down the upper side of the bent portion; S6. Trimming and grinding: Trim and grind the edges of the bent parts after shaping.

2. A wood board bending method according to claim 1, characterized in that: During the execution of steps S1 to S5, the wooden board is transported through each workstation in sequence by a conveying mechanism, wherein the conveying mechanism comprises an upper roller assembly (101) and a lower roller assembly (102), wherein the lower roller assembly (102) is mounted on the left side of the base (1), and the upper roller assembly (101) is mounted above the lower roller assembly (102) via a single-sided cantilever gantry (9), and the single-sided rotary arm gantry is fixed to the right side of the base (1).

3. A method for bending a wooden board according to claim 2, characterized in that: In step S1, the upper roller assembly (101) is connected to the single-side rotary arm gantry via a vibration damper.

4. A wood board bending method according to claim 2, characterized in that: In step S1, a board support frame (11) for supporting a wooden board is provided on the left side of the base (1), and the supporting surface of the board support frame (11) is flush with the upper edge of the lower roller assembly (102).

5. The method for bending a wooden board according to claim 1, wherein: The reinforcing tape in step S2 comprises a base material layer and an adhesive layer, wherein the base material layer is a fiber cloth or a polymer film, and is used to enhance the tensile strength of the wood, and the adhesive layer is used to adhere to the surface of the wood board and fill the gaps between the wood fibers.

6. A method for bending a wooden board according to claim 5, characterized in that: In step S2, the tape is automatically guided to cover the area to be bent, the tape is fixed to the lower side of the wooden board by a pressing roller, and then the tape is automatically cut.

7. A method for bending a wooden board according to any one of claims 1 to 5, characterized in that: In step S3, a forming cutter head is used to form a groove on the upper side of the wooden board to facilitate bending. At the same time, a dust suction device is set behind the forming cutter head to suck away impurities such as wood chips and dust generated when the groove is formed.

8. A method for bending a wooden board according to any one of claims 1 to 5, characterized in that: During the synchronous bending of step S4, a vertical downward positioning and pressing force is applied above the main area near the bending portion of the wooden board to firmly press the main part of the wooden board to the predetermined position; the bending mechanisms (6) on both sides realize synchronous movement of the support plate (64) through the rigid connecting plate (62) and multiple connecting rods (63), and the length of the connecting rod (63) is adjustable to adapt to wooden boards of different thicknesses; the bending bracket (61) realizes longitudinal movement through the cooperation of the bending slide rail (66) and the bending slider (651).

9. A method for bending a wooden board according to any one of claims 1 to 5, characterized in that: In step S5, the clamping force applied to the upper and lower outer surfaces of the bending portion is provided by the upper ejection wheel (75) and the lower ejection wheel (76), respectively, and the magnitude of the clamping force is adjusted by adjusting the longitudinal positions of the upper ejection wheel (75) and the lower ejection wheel (76).

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