Plate batten gluing device with polishing function

Abstract

The invention relates to the technical field of solid wood processing, in particular to a board batten gluing device with a polishing function, which comprises a first roller conveyor and a second roller conveyor which are sequentially arranged along the conveying direction of a board batten, and a connecting interval is reserved between the first roller conveyor and the second roller conveyor. The double functions of positioning and bending detection are integrated through the centering assembly, the bending form of the batten is recognized through a pressure array sensor, a reliable basis is provided for follow-up grinding mode switching, the mode switching design of the self-adaptive grinding assembly is matched, and the machining precision of the batten is improved. When a straight batten is used, a first spring rod is locked through a limiting assembly to achieve rigid grinding, the flatness of the side face is guaranteed, when an arc-shaped bent batten is used, the first spring rod is unlocked to achieve flexible grinding, a grinding strip is tightly attached to the curved face, and the problems that a convex face is excessively ground, and a concave face is not ground sufficiently are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid wood processing, in particular to a board strip gluing device with polishing function. BACKGROUND

[0002] In the field of wood products such as solid wood furniture, wood floor, solid wood door and window, solid wood strip splicing is the core process to realize large-format and high-strength solid wood components. Due to the size limitation of natural logs, multiple narrow solid wood strips need to be spliced into large-format boards through side polishing, gluing and pressing to meet the size requirements of actual applications. The polishing quality of the side of the solid wood strip and the uniformity of the gluing directly determine the adhesion strength and infiltration effect of the glue layer, which is the key prerequisite to ensure the structural stability, flatness and service life of the spliced board. Influenced by factors such as uneven natural texture of wood, moisture content change during drying and processing stress release, the solid wood strip will inevitably produce slight arc bending after cutting and drying. Such bending is normal in the industry and is not a processing defective product. It is also a processing object that must be faced in the pretreatment process of solid wood strip splicing.

[0003] For arc-shaped strips, if a rigid polishing assembly is used, the convex surface of the strip will be in excessive contact with the polishing component, causing excessive polishing of the convex surface and damage to the wood fibers. The concave surface will not be polished enough due to insufficient contact, resulting in uneven roughness of the side of the strip. If a flexible polishing assembly is used throughout the process, it can adapt to the curved strip to some extent, but when processing straight strips, the polishing pressure will be unstable, causing the flatness of the side of the straight strip to decrease. It cannot meet the universal polishing needs of straight strips and curved strips, and further problems such as uneven polishing and uneven gluing of curved strips will occur.

[0004] Therefore, we propose a board strip gluing device with polishing function. SUMMARY

[0005] To solve the above technical problems, the present application provides a board strip gluing device with polishing function, which comprises a first roller conveyor and a second roller conveyor arranged in sequence along the conveying direction of the board strip. A connection interval is reserved between the first roller conveyor and the second roller conveyor. A flexible gluing assembly is arranged in the connection interval. The flexible gluing assembly is used for gluing the side of the polished board strip. The first roller conveyor located upstream of the conveying direction is sequentially equipped with a centering assembly and a self-adaptive polishing assembly. The centering assembly is used to push the board strip to a preset conveying reference position and detect whether the board strip is curved. The self-adaptive polishing assembly is used to switch the polishing mode according to the detection result of the centering assembly to adapt to straight or curved board strips.

[0006] In some embodiments, the centering assembly comprises two push cylinders symmetrically arranged on both sides of the first roller conveyor, the push cylinders are fixedly assembled on the frame of the first roller conveyor, and the output shafts of the push cylinders are arranged towards the conveying center line of the first roller conveyor; The output shaft end of the push cylinder is connected with a push plate, the push plate is embedded with a pressure array sensor towards one side surface of the board strip, and the pressure array sensor is used to detect the pressure distribution when the push plate contacts with the side surface of the board strip, so as to judge whether the board strip is arc-bent.

[0007] In some embodiments, the frame of the first roller conveyor is fixedly assembled with a beam support, the beam support spans above the conveying path of the first roller conveyor, the bottom of the beam support is provided with two slide rails parallel to the conveying direction of the board strip, and the self-adapting polishing assembly comprises two symmetrically arranged clamping polishing units, and the two clamping polishing units are respectively slidably assembled at the two ends of the two slide rails; The two ends of each slide rail are slidably embedded with a sliding block, and the ends of the two slide rails away from each other are fixedly assembled with a driving motor, a screw rod is rotatably assembled in each slide rail, one end of the screw rod is in transmission connection with the output shaft of the corresponding driving motor, and the screw rod is threaded through the sliding block close to the driving motor in the slide rail, and the sliding block away from the driving motor in the same slide rail is provided with an avoiding hole for the screw rod to pass through.

[0008] In some embodiments, the clamping polishing unit comprises a mounting bracket fixedly connected to the bottom of the sliding block at the same end of the two slide rails, the mounting bracket is inverted U-shaped and spans above the conveying path of the board strip, a push cylinder is fixedly assembled in the middle of the beam of the mounting bracket, the output shaft of the push cylinder penetrates the beam of the mounting bracket along a direction perpendicular to the conveying direction of the board strip, and the end of the output shaft of the push cylinder is fixedly connected with a driving plate, both ends of the driving plate are integrally formed with an inclined plate, a guide rod is fixedly assembled between the two vertical beams of the mounting bracket, and the guide rod is arranged along a direction perpendicular to the conveying direction of the board strip; Two oppositely arranged connecting plates are slidably sleeved on the guide rod, a connecting spring is arranged between the two connecting plates, the connecting spring is sleeved on the outer periphery of the guide rod, and both ends of the connecting spring are fixedly connected with the opposite side surfaces of the two connecting plates, the top ends of the two connecting plates respectively abut against the inclined plates on both sides, and the bottom ends of the two connecting plates are fixedly assembled with a polishing execution unit.

[0009] In some embodiments, the polishing execution unit comprises a barrel fixedly connected to the bottom end of the connecting plate, the opening of the barrel is arranged towards the strip plate, a plurality of spring rods I are arranged in linear array in the barrel along the conveying direction of the strip plate, a rubber skirt is fixedly connected to the edge of the opening of the barrel, a flexible polishing strip is arranged on the side of the rubber skirt away from the barrel, the edge of the rubber skirt and the flexible polishing strip are sealingly connected, the telescopic end of each spring rod I is fixedly connected to the back side of the flexible polishing strip, and a limiting assembly for limiting the telescopic stroke of the spring rod I is further assembled in the barrel to switch the telescopic state of the spring rod I to achieve rigid polishing or flexible polishing.

[0010] In some embodiments, a plurality of chip guide inclined grooves are formed in the side surface of the flexible polishing strip towards the strip plate, and adjacent chip guide inclined grooves are arranged in parallel and spaced apart.

[0011] In some embodiments, shovel plates and limiting strips are protrudingly arranged at the upper and lower ends of the flexible polishing strip, when the two polishing execution units opposingly clamp the strip plate, the shovel plates can shovel the strip plate from the conveying roller surface of the first roller conveyor, so that the strip plate is separated from the conveying roller surface and symmetrically clamped and positioned by the flexible polishing strips of the two polishing execution units.

[0012] In some embodiments, the limiting assembly comprises a moving rod slidingly assembled in the barrel along the horizontal direction, a plurality of limiting plates are fixedly arranged at the bottom of the moving rod along the conveying direction of the strip plate, the plurality of limiting plates correspond to the plurality of spring rods I, a limiting groove adapted to the limiting plate is formed in the outer periphery of the telescopic end of each spring rod I, a transmission rack is integrally formed on one side of the moving rod, a reduction motor is fixedly assembled in the barrel, a gear is drivingly connected to the output shaft of the reduction motor, and the gear is in meshing transmission with the transmission rack to drive the moving rod to reciprocatingly slide and drive the limiting plates to be embedded in or separated from the limiting groove of the corresponding spring rod I.

[0013] In some embodiments, the flexible gluing assembly comprises gluing cylinders symmetrically arranged on both sides of the connecting interval, the cylinder body of the gluing cylinder is fixedly assembled on the rack of the first roller conveyor or the second roller conveyor, the output shaft of the gluing cylinder extends along a direction perpendicular to the conveying direction of the strip plate, a hopper is connected to the end of the output shaft of the gluing cylinder, a gluing roller is rotatably arranged in the hopper, the roller surface of the gluing roller is used for contacting and gluing the side surface of the polished strip plate, an elastic connecting piece is arranged between the output shaft of the gluing cylinder and the hopper, the elastic connecting piece is used for realizing the elastic floating of the hopper, a cross plate is arranged at the connecting interval, the cross plate is fixedly connected to the first roller conveyor or the second roller conveyor, and clamping rollers are symmetrically arranged on the cross plate.

[0014] In some embodiments, the elastic connecting piece comprises a plurality of spring rods arranged along the direction perpendicular to the strip plate conveying direction, two ends of each spring rod are fixedly connected with the output shaft end of the gluing air cylinder and the bottom of the hopper respectively, one side of the first roller conveyor is fixedly provided with a counter, the counter is electrically connected with the gluing air cylinder, and the counter is used for detecting the number of passed strip plates, when the counter detects the last two strip plates for the splicing process, the gluing air cylinder on one side is driven to retract the corresponding hopper, and only the gluing air cylinder on the other side is driven to work to realize one-side gluing.

[0015] The present application has at least the following advantages: 1. By integrating the centering assembly positioning and bending detection dual functions, the pressure array sensor is used to identify the bending shape of the strip plate, to provide reliable basis for subsequent polishing mode switching, and the mode switching design of the self-adaptive polishing assembly is matched, the rigid polishing is realized by locking the spring rod one through the limiting assembly when the straight strip plate is straight, the side flatness is ensured, the flexible polishing is realized by unlocking the spring rod one when the arc-shaped bent strip plate is bent, the strip plate is closely attached to the curved surface, and the problems of excessive polishing of convex surface and insufficient polishing of concave surface are avoided. 2. The flexible gluing assembly realizes the self-adaptive floating of the gluing roller through the elastic connecting piece, adapts to the bending shape of the polished strip plate, and ensures uniform coating of the glue layer. 3. The present application increases the linkage control of the counter and the gluing air cylinder, automatically realizes one-side gluing for the last two strip plates in the splicing process, avoids the waste of glue caused by double-side gluing, reduces the glue cleaning process and material loss, at the same time, the shovel plate and the limiting strip of the polishing execution unit are designed, the strip plate can be accurately clamped after being separated from the conveying roller surface, the strip plate deviation in the polishing process is avoided, the polishing precision is further improved, the strip plate scrap rate caused by processing error is reduced, and the production cost is indirectly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the present application; Figure 2 It is a top view structure schematic view of the present application; Figure 3 It is a first roller conveyor structure schematic view of the present application; Figure 4 It is a centering assembly structure schematic view of the present application; Figure 5 It is a self-adaptive polishing assembly structure schematic view of the present application; Figure 6 It is a slide rail section view structure schematic view of the present application; Figure 7 It is a clamping and polishing unit structure schematic view of the present application; Figure 8 It is an explosion structure schematic view of the present application at the cylinder; Figure 9 Structure diagram of the flexible polishing strip in the application; Figure 10 Structure diagram of the flexible gluing assembly and the cross plate in the application; Figure 11 Structure diagram of the flexible gluing assembly in the application.

[0017] In the figure: 1-first roller conveyor; 2-second roller conveyor; 3-connection interval; 4-flexible gluing assembly; 41-gluing cylinder; 42-hopper; 43-gluing roller; 44-elastic connecting piece; 441-spring rod two; 45-cross plate; 46-clamping roller; 5-centering assembly; 51-pushing cylinder; 52-pushing plate; 6-self-adapting polishing assembly; 61-sliding block; 62-screw rod; 7-clamping polishing unit; 71-mounting frame; 72-pushing cylinder; 73-driving plate; 74-inclined plate; 75-guiding rod; 76-connection plate; 77-connection spring; 8-polishing execution unit; 81-cylinder; 82-spring rod one; 83-rubber skirt; 84-flexible polishing strip; 85-chip guiding chute; 86-scooping plate; 87-limiting strip; 9-limiting assembly; 91-moving rod; 92-limiting plate; 93-limiting groove; 94-transmission rack; 95-gear; 10-cross beam support; 11-sliding rail. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0019] Embodiment: please refer to Figures 1-11The present application provides a technical scheme: a strip board gluing device considering polishing, comprising a first roller conveyor 1 and a second roller conveyor 2 arranged in sequence along the conveying direction of the strip board, both the first roller conveyor 1 and the second roller conveyor 2 adopt standard industrial roller conveyors, wherein the spacing between the rollers of the first roller conveyor 1 is set to 80-100mm, the roller diameter is selected to be 50mm, and the material is 45# steel surface galvanized treatment, which has sufficient bearing strength and can adapt to the stable conveying of solid wood strip boards with a width of 50-200mm and a thickness of 20-50mm, the roller parameters of the second roller conveyor 2 are consistent with those of the first roller conveyor 1, so as to ensure smooth transition of the strip board during conveying between the two conveyors, both the two conveyors are driven by independent reduction motors, the motor power is selected to be 0.75kW, and the rotating speed can be adjusted in the range of 0-1.5m / s, so that the conveying speed can be flexibly adapted according to the processing requirements of different wood materials, so as to avoid strip board deviation caused by too high speed or affect processing efficiency caused by too low speed, before starting the equipment, the operator adjusts the conveying speed of the first roller conveyor 1 and the second roller conveyor 2 according to the specific specifications of the strip board to be processed, and at the same time, the preset parameters such as the working pressure of the subsequent cylinders, the total number of spliced strip boards and the like are completed, the equipment initialization debugging is completed, and the parts are ensured to be in the best working state. A connection interval 3 is reserved between the first roller conveyor 1 and the second roller conveyor 2, and a flexible gluing assembly 4 is arranged in the connection interval 3, which is used for gluing the side surface of the polished strip board, the width of the connection interval 3 is set to 150-200mm, which can completely accommodate the installation and action space of the flexible gluing assembly 4, and can also ensure that the strip board will not be jammed or dropped when conveying from the first roller conveyor 1 to the second roller conveyor 2, and at the same time, it provides sufficient operation distance for the full contact between the gluing roller 43 and the side surface of the strip board. The first roller conveyor 1 located upstream of the conveying direction is sequentially provided with a centering assembly 5 and a self-adaptive polishing assembly 6, the centering assembly 5 is used for pushing the strip board to a preset conveying reference position and detecting whether the strip board is curved, and the self-adaptive polishing assembly 6 is used for switching the polishing mode according to the detection result of the centering assembly 5 to adapt to straight or curved strip boards, the preset conveying reference position is the conveying center line of the first roller conveyor 1, and the spacing between the centering assembly 5 and the self-adaptive polishing assembly 6 is set to 300-400mm, which is determined considering the process requirements, so as to ensure that the strip board has sufficient stable conveying distance after completing the centering detection and then entering the polishing station, and sufficient response time is reserved for the transmission of the detection signal and the mode switching of the polishing assembly, so as to ensure the continuity of the whole processing process.

[0020] The centering assembly 5 includes two push cylinders 51 symmetrically arranged on both sides of the first roller conveyor 1. The push cylinders 51 are fixedly installed on the frame of the first roller conveyor 1, and the output shafts of the push cylinders 51 are arranged towards the conveying center line of the first roller conveyor 1. The push cylinders 51 are standard cylinders with a model of SC63x100 and a working pressure range of 0.4-0.6 MPa. The cylinder bodies are fixed on the frame of the first roller conveyor 1 by high-strength bolts. The symmetry centers of the two push cylinders 51 completely coincide with the conveying center line of the first roller conveyor 1, and the extension direction of the output shafts is perpendicular to the conveying center line, so as to ensure the symmetry of the pushing forces on both sides during centering and avoid the inclination of the strip during centering. In order to avoid the damage of the strip caused by the too fast action of the push cylinders 51, a throttle valve is connected in series at the inlet of the cylinder, which can accurately adjust the extension speed of the cylinder and adapt to the centering requirements of wood with different hardness. The output shaft end of the push cylinder 51 is connected with a push plate 52. The push plate 52 is embedded with a pressure array sensor towards the side surface of the strip. The pressure array sensor is used to detect the pressure distribution when the push plate 52 contacts with the side surface of the strip, so as to judge whether the strip is curved. The push plate 52 is made of an aluminum alloy plate with a thickness of 10 mm. The side surface of the push plate 52 towards the strip is milled to ensure the fit with the side surface of the strip and avoid the inclination or scratch of the strip caused by the uneven surface of the push plate 52. The height of the push plate 52 is set to 80 mm, which is greater than the maximum thickness of the common strip, so as to ensure that the strips with different thicknesses can be effectively pushed. The pressure array sensor is a film pressure sensor with a model of FSR406, which is embedded in the groove on the surface of the push plate 52. The surface of the sensor is flush with the surface of the push plate 52 to avoid the protruding structure. The sensor is electrically connected with the PLC control system of the device through a shielded wire, which can transmit the detected pressure signal to the control system in real time. The control system judges whether the strip is curved by analyzing the uniformity of the pressure distribution of the push plate 52 on both sides. When the strip to be processed is conveyed on the first roller conveyor 1, the strip is conveyed forward with the conveying roller. When the strip reaches the working area of the centering assembly 5, the photoelectric sensor in the area detects the strip and sends a signal to the control system. The control system controls the two push cylinders 51 to extend synchronously, pushes the push plate 52 to move towards the conveying center line, and pushes the offset strip to the preset reference position. During the pushing process, the pressure array sensor collects the pressure distribution signal in real time and transmits it to the control system. The control system judges the shape of the strip by analyzing the signal and transmits the detection result to the control module of the self-adaptive polishing assembly 6.

[0021] The first roller conveyor 1 is fixedly provided with a beam support 10 which is arranged above the conveying path of the first roller conveyor 1, and the bottom of the beam support 10 is provided with two slide rails 11 which are parallel to the conveying direction of the plate strip; the self-adaptive polishing assembly 6 comprises two symmetrical clamping and polishing units 7 which are respectively slidably arranged at the two ends of the two slide rails 11; the beam support 10 is welded by a rectangular steel pipe, and the two ends of the beam support 10 are fixedly connected with the rack columns of the first roller conveyor 1 through flanges, and a triangular reinforcing rib plate is additionally arranged at the connection position to effectively improve the bearing capacity and structural stability of the beam support 10, so as to avoid the decrease of polishing precision caused by vibration during polishing; the linear slide rail 11 with a model of HGR20 is selected as the slide rail 11, and the length of the slide rail 11 is determined according to the maximum width of the plate strip to be processed. The two ends of each slide rail 11 are slidably provided with a sliding block 61, and the ends away from each other of the two slide rails 11 are fixedly provided with a driving motor; a screw rod 62 is rotatably arranged in each slide rail 11, one end of the screw rod 62 is in transmission connection with the output shaft of the corresponding driving motor, and the screw rod 62 is threadedly penetrated through the sliding block 61 close to the driving motor in the slide rail 11; the sliding block 61 away from the driving motor in the same slide rail 11 is provided with an avoiding hole for the clearance of the screw rod 62, that is, the driving motor on each slide rail 11 can only drive one of the sliding blocks 61 in the slide rail 11 to move, so that one group of clamping and polishing units 7 can clamp the plate strip during the polishing process, and the other group can polish the plate strip, and vice versa; the sliding block 61 is a standard sliding block 61 matched with the slide rail 11, and is provided with a high-precision ball bearing, so that the sliding resistance is small and the displacement control requirement during polishing can be met; the driving motor is a stepping motor with a model of 57BYG250H, so as to stably drive the sliding block 61 to slide along the slide rail 11; the screw rod 62 is a ball screw rod 62 with a model of SFU2005 and a lead of 5mm, one end of the screw rod 62 is in transmission connection with the output shaft of the driving motor through a shaft coupling, and the other end is rotatably connected with the end support of the slide rail 11 through a deep groove ball bearing, so as to ensure that the screw rod 62 rotates stably without radial jumping; the diameter of the avoiding hole is 2mm larger than the outer diameter of the screw rod 62, so as to ensure that the screw rod 62 can smoothly pass through, avoid interference between the sliding block 61 and the screw rod 62 during sliding, and provide sufficient guiding space for the sliding of the sliding block 61, so as to ensure the smoothness of the sliding process.

[0022] The clamping and polishing unit 7 includes a mounting bracket 71 fixedly connected to the bottom of the slider 61 at the same end of the two slide rails 11. The mounting bracket 71 is in the shape of an inverted U. The mounting frame 71 is positioned above the conveying path of the wooden strips. A push cylinder 72 is fixedly mounted in the middle of the crossbeam of the mounting frame 71. The output shaft of the push cylinder 72 passes through the crossbeam of the mounting frame 71 along a direction perpendicular to the conveying direction of the wooden strips. A drive plate 73 is fixedly connected to the end of the output shaft of the push cylinder 72. Both ends of the drive plate 73 are integrally formed with inclined plates 74. The push cylinder 72 can drive the inclined plates 74 to move up and down. A guide rod 75 is fixedly mounted between the two vertical beams of the mounting frame 71. The mounting frame 71 is welded from high-strength steel plates. The push cylinder 72 is a standard cylinder of model SC50×80 with a working pressure range of 0.4-0.6MPa. Its cylinder body is fixed in the middle of the crossbeam of the mounting frame 71 by a flange. The drive plate 73 is made of steel plate with a thickness of 8mm. The inclined plates 74 and the drive plate 73 are made by an integral forming process. Two opposing connecting plates 76 are slidably sleeved on the guide rod 75. A connecting spring 77 is provided between the two connecting plates 76. The connecting spring 77 is sleeved on the outer periphery of the guide rod 75, and its two ends are fixedly connected to the opposite sides of the two connecting plates 76, respectively. The tops of the two connecting plates 76 abut against the inclined plates 74 on both sides, respectively. A grinding execution unit 8 is fixedly mounted on the bottom of each of the two connecting plates 76. The connecting plates 76 are made of lightweight and high-strength aluminum alloy, and a sliding hole adapted to the guide rod 75 is opened in the center of the plate. A wear-resistant copper sleeve is embedded in the sliding hole, and the copper sleeve and the guide rod 75 are spaced apart. The design ensures smooth sliding while effectively preventing wobbling. The top of the connecting plate 76 is machined with a bevel that matches the inclined plate 74. The bevel fits the inclined plate 74 well. After the strip that has completed the centering test is conveyed to the working area of ​​the adaptive grinding component 6, the control system first controls the grinding mode to switch according to the test results, and then controls the push cylinder 72 to extend and push the drive plate 73 to move. The inclined plate 74 then squeezes the connecting plate 76, causing the two connecting plates 76 to slide relative to each other along the guide rod 75 and the connecting spring 77 to compress. The grinding execution unit 8 at the bottom of the connecting plate 76 moves synchronously in opposite directions to complete the subsequent clamping action.

[0023] The grinding execution unit 8 includes a cylinder 81 fixedly connected to the bottom end of the connecting plate 76. The opening of the cylinder 81 faces the plate strip. Multiple spring rods 82 are arranged in a linear array inside the cylinder 81 along the conveying direction of the plate strip. A rubber skirt 83 is fixedly connected to the edge of the opening of the cylinder 81. A flexible grinding strip 84 is provided on the side of the rubber skirt 83 away from the cylinder 81. The edges of the rubber skirt 83 and the flexible grinding strip 84 are sealed together. The telescopic end of each spring rod 82 is fixedly connected to the back side of the flexible grinding strip 84. A limiting component 9 for limiting the telescopic stroke of the spring rod 82 is also installed inside the cylinder 81 to switch the telescopic state of the spring rod 82 to achieve rigid grinding or flexible grinding. The cylinder 81 is made of lightweight aluminum alloy and has an overall rectangular structure. Its back side is fixedly connected to the bottom of the connecting plate 76 by internal hex bolts, which makes the connection reliable and easy to disassemble and maintain. Spring rod 82 is a YQ-16 miniature spring telescopic rod. Rubber skirt 83 is made of wear-resistant nitrile rubber with a thickness of 5mm. Its edge is fixed to the opening edge of cylinder 81 by bolts. The other side is sealed to the edge of flexible sanding strip 84 by high-strength adhesive, which plays a good role in dust prevention and sealing, preventing sawdust generated during sanding from entering the inside of cylinder 81 and affecting the operation of the parts. Flexible sanding strip 84 is made of polyurethane with an embedded glass fiber reinforcement layer and a thickness of 15mm. Silicon carbide sandpaper is pasted on the side facing the strip. The sandpaper grit can be selected from 80 to 120 grit to adapt to the sanding needs of wood with different hardness, taking into account sanding efficiency and surface quality. In order to ensure the quality of adhesive application, a blowing station can be added in the sanding section to blow away the side of the sanded wooden strip to avoid sawdust residue.

[0024] The flexible sanding strip 84 has multiple chip-guiding grooves 85 on the side facing the board strip, with adjacent grooves arranged in parallel and spaced intervals. During sanding, the generated wood chips can be quickly guided out along the groove direction, preventing wood chips from accumulating between the sanding surface and the board strip. This ensures the stability of the sanding effect, reduces wear on the sanding cloth, and extends its service life. Simultaneously, the chip-guiding grooves 85 also increase the contact area between the sanding surface and the air, aiding in heat dissipation during sanding and preventing carbonization of the wood surface due to excessive sanding heat, or affecting the adhesion of subsequent adhesive layers due to excessive temperature.

[0025] Both ends of the flexible grinding strip 84 are provided with a shovel plate 86 and a limiting strip 87. When the two grinding execution units 8 clamp the plate strip in opposite directions, the shovel plate 86 can shovel the plate strip from the conveying roller surface of the first roller conveyor 1, so that the plate strip is separated from the conveying roller surface and is symmetrically clamped and positioned by the flexible grinding strips 84 of the grinding execution units 8 on both sides. The scraper plate 86 and the flexible grinding strip 84 are manufactured using an integral molding process and are made of the same polyurethane material. The front end of the scraper plate 86 is machined with a scraper blade with an inclination angle of 15° to facilitate smooth insertion between the bottom of the strip and the surface of the conveyor roller, avoiding scratches on the bottom surface of the strip during the scraping process. The limiting strip 87 is also integrally molded with the flexible grinding strip 84. When the strip is scraped up, the limiting strip 87 can restrict the vertical displacement of the strip, preventing the strip from shaking up and down during the grinding process and ensuring grinding accuracy. The grinding execution unit 8 moves in opposite directions. When in motion, the scraper plate 86 at the front end of the flexible sanding strip 84 will smoothly insert between the bottom of the strip and the surface of the conveying roller, lifting the strip smoothly and separating it from the surface of the conveying roller. At the same time, the flexible sanding strips 84 on both sides symmetrically clamp the side of the strip to achieve precise positioning. After clamping, the control system controls the drive motor to start, and drives the clamping and sanding unit 7 to slide back and forth along the slide rail 11 through the transmission of the lead screw 62 and the slider 61. The flexible sanding strip 84 performs full sanding on the side of the strip, and the wood chips generated by sanding are quickly discharged through the chip guide groove 85.

[0026] The limiting component 9 includes a movable rod 91 that is slidably mounted in the cylinder 81 along the horizontal direction. Multiple limiting plates 92 are fixedly arranged at intervals at the bottom of the movable rod 91 along the conveying direction of the plate strip. The multiple limiting plates 92 correspond to multiple spring rods 82. Each spring rod 82 has a limiting groove 93 on the outer periphery of its telescopic end that is adapted to the limiting plate 92. A transmission rack 94 is integrally formed on one side of the movable rod 91. A reduction motor is fixedly mounted in the cylinder 81. The output shaft of the reduction motor is connected to a gear 95. The gear 95 meshes with the transmission rack 94 to drive the movable rod 91 to slide back and forth, thereby causing the limiting plate 92 to be inserted into or disengaged from the limiting groove 93 of the corresponding spring rod 82. A sliding sleeve is fixedly installed inside the cylinder 81, and the moving rod 91 is slidably installed inside the sliding sleeve to ensure its stable movement within the cylinder 81. The limiting plate 92 is fixed to the moving rod 91 by welding, and the weld is ground. Its dimensions are precisely matched with the limiting groove 93. After being embedded in the limiting groove 93, it can reliably limit the extension and retraction of the spring rod 82, ensuring the stability of the rigid grinding mode. The limiting groove 93 is opened on the outer periphery of the extension and retraction end of the spring rod 82 to ensure that the limiting plate 92 can be smoothly embedded and reliably limited. The geared motor is a miniature stepper motor of model 28BYG250H, and the gear 95 meshes with the transmission rack 94 for transmission. The control system can drive the moving rod 91 to slide back and forth. When the control system receives the detection result of the centering component 5, if it is a straight strip, it controls the reduction motor to start, and drives the moving rod 91 to slide through the meshing of the gear 95 and the rack. This causes the limiting plate 92 to be embedded in the limiting groove 93 of the spring rod 82, restricting the extension and retraction of the spring rod 82. The grinding execution unit 8 then switches to the rigid grinding mode. If it is an arc-shaped curved strip, it controls the reduction motor to start in the reverse direction, causing the moving rod 91 to slide in the reverse direction. The limiting plate 92 disengages from the limiting groove 93, and the spring rod 82 returns to its extendable state. The system then switches to the flexible grinding mode to ensure that strips of different shapes can obtain a uniform grinding effect.

[0027] The flexible gluing assembly 4 includes gluing cylinders 41 symmetrically arranged on both sides of the connecting interval 3. The cylinder body of the gluing cylinder 41 is fixedly mounted on the frame of the first roller conveyor 1 or the second roller conveyor 2. The output shaft of the gluing cylinder 41 extends along the direction perpendicular to the conveying direction of the sheet metal strip. The end of the output shaft of the gluing cylinder 41 is connected to a hopper 42. A gluing roller 43 is rotatably arranged inside the hopper 42. The roller surface of the gluing roller 43 is used to contact the side of the polished sheet metal strip to apply glue. An elastic connector 44 is provided between the output shaft of the gluing cylinder 41 and the hopper 42. The elastic connector 44 is used to realize the elastic floating of the hopper 42. A horizontal plate 45 is provided at the connecting interval 3. The horizontal plate 45 is fixedly connected to the first roller conveyor 1 or the second roller conveyor 2. Clamping rollers 46 are symmetrically arranged on the horizontal plate 45. The gluing cylinder 41 is a standard cylinder of model SC80×100. Its cylinder body is fixed to the extension end of the frame of the first roller conveyor 1 by bolts. The extension end of the frame is reinforced with channel steel to ensure a firm installation. The surface of the gluing roller 43 is machined with a glue storage tank, which can store a certain amount of glue to ensure the uniformity of the gluing process. One end of the gluing roller 43 is connected to a micro geared motor via a coupling. The micro geared motor is model 36BYG250H, which can realize the uniform rotation of the gluing roller 43 for gluing. The elastic connector 44 enables the hopper 42 and the gluing roller 43 to have a certain elastic floating ability. When encountering a bent strip, the gluing roller 43 can... 3. The position can be adaptively adjusted to ensure full contact with the side of the strip. After grinding, the push cylinder 72 is reset, the connecting spring 77 pushes the connecting plate 76 to reset, the grinding execution unit 8 releases the strip, and the strip falls back to the first roller conveyor 1 and continues to be conveyed to the connecting interval 3. When the strip reaches the working area of ​​the flexible gluing component 4, the control system controls the gluing cylinder 41 to extend, push the hopper 42 and the gluing roller 43 to move towards the side of the strip, so that the gluing roller 43 is in full contact with the side of the strip. At the same time, the control system controls the drive motor of the gluing roller 43 to start, driving the gluing roller 43 to rotate at a uniform speed, and evenly coating the glue in the hopper 42 onto the side of the strip.

[0028] The elastic connector 44 includes multiple spring rods 441 arranged at intervals along the direction perpendicular to the conveying direction of the sheet metal strips. The two ends of each spring rod 441 are fixedly connected to the output shaft end of the gluing cylinder 41 and the bottom of the hopper 42, respectively. A counter is fixedly mounted on one side of the first roller conveyor 1. The counter is electrically connected to the gluing cylinder 41 and is used to detect the number of sheet metal strips that have passed. When the counter detects that the last two sheet metal strips are for the splicing process, it controls the gluing cylinder 41 on one side to drive the corresponding hopper 42 to retract, leaving only the gluing cylinder 41 on the other side to drive the hopper 42 to work so as to achieve gluing on one side. Four YQ-20 miniature spring telescopic rods are evenly arranged along the direction perpendicular to the strip conveying to ensure uniform force on the hopper 42 and smooth, uninterrupted elastic floating. An E3Z-LS63 photoelectric counter is used, with its transmitter and receiver installed on both sides of the first roller conveyor 1, upstream of the centering assembly 5. This counter accurately detects the number of strips passing through. It is electrically connected to the PLC control system via shielded wires, and transmits the data to the control system in real time during strip conveying. When the system detects that there are two remaining strips, it sends a signal to the single-sided gluing cylinder 41 to control its retraction, causing the corresponding side gluing roller 43 to disengage from the side of the strip, leaving only the other side gluing roller 43 to work to achieve single-sided gluing. This ensures that the top and bottom strips of the spliced ​​board are not glued. At the same time, when the upper roller on one side retracts, the clamping roller 46 can clamp the wood strips to maintain stable conveying. The glued strips are finally conveyed to the second roller conveyor 2 through the connecting interval 3, and then conveyed by the second roller conveyor 2 to the subsequent splicing and pressing process.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the 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 invention.

Claims

1. A glue-applying device for sheet metal strips that also performs sanding, characterized in that: The system includes a first roller conveyor (1) and a second roller conveyor (2) arranged sequentially along the conveying direction of the sheet metal strips. A connection gap (3) is reserved between the first roller conveyor (1) and the second roller conveyor (2). A flexible gluing component (4) is provided in the connection gap (3). The flexible gluing component (4) is used to apply glue to the side of the polished sheet metal strips. On the first roller conveyor (1) located upstream of the conveyor, a centering component (5) and an adaptive polishing component (6) are sequentially assembled along the conveying direction of the sheet metal strips. The centering component (5) is used to push the sheet metal strips to a preset conveying reference position and detect whether the sheet metal strips are bent. The adaptive polishing component (6) is used to switch the polishing mode according to the detection result of the centering component (5) to adapt to straight or bent sheet metal strips.

2. The gluing device for sheet metal strips that also performs sanding according to claim 1, characterized in that: The centering component (5) includes two push cylinders (51) symmetrically arranged on both sides of the first roller conveyor (1). The push cylinders (51) are fixedly mounted on the frame of the first roller conveyor (1), and the output shaft of the push cylinders (51) is arranged toward the conveying center line of the first roller conveyor (1). The output shaft end of the push cylinder (51) is connected to a push plate (52). A pressure array sensor is embedded on the side surface of the push plate (52) facing the plate strip. The pressure array sensor is used to detect the pressure distribution when the push plate (52) contacts the side of the plate strip to determine whether the plate strip has an arc-shaped bend.

3. The gluing device for sheet metal strips that also performs sanding according to claim 1, characterized in that: A crossbeam support (10) is fixedly mounted on the frame of the first roller conveyor (1). The crossbeam support (10) spans across the conveying path of the first roller conveyor (1). Two slide rails (11) are arranged parallel to each other at the bottom of the crossbeam support (10) along the conveying direction of the plate strip. The adaptive grinding assembly (6) includes two symmetrically arranged clamping grinding units (7). The two clamping grinding units (7) are respectively slidably mounted on both ends of the two slide rails (11). Each slide rail (11) has a slider (61) slidably embedded at both ends. The ends of the two slide rails (11) that are opposite to each other are fixedly equipped with a drive motor. Each slide rail (11) has a lead screw (62) rotatably mounted inside. One end of the lead screw (62) is connected to the output shaft of the corresponding drive motor. The lead screw (62) is threaded through the slider (61) of the slide rail (11) that is close to the drive motor. The slider (61) of the same slide rail (11) that is far away from the drive motor has a clearance hole for the lead screw (62) to pass through.

4. The gluing device for sheet metal strips that also performs sanding according to claim 3, characterized in that: The clamping and polishing unit (7) includes a mounting frame (71) fixedly connected to the bottom of the slider (61) at the same end of the two slide rails (11). The mounting frame (71) is U-shaped and spans above the conveying path of the wooden strip. A push cylinder (72) is fixedly mounted in the middle of the crossbeam of the mounting frame (71). The output shaft of the push cylinder (72) passes through the crossbeam of the mounting frame (71) along the direction perpendicular to the conveying direction of the board strip. A drive plate (73) is fixedly connected to the end of the output shaft of the push cylinder (72). Both ends of the drive plate (73) are integrally formed with inclined plates (74). A guide rod (75) is fixedly mounted between the two vertical beams of the mounting frame (71). The guide rod (75) is arranged along the direction perpendicular to the conveying direction of the board strip. Two oppositely arranged connecting plates (76) are slidably sleeved on the guide rod (75). A connecting spring (77) is provided between the two connecting plates (76). The connecting spring (77) is sleeved on the outer periphery of the guide rod (75), and the two ends of the connecting spring (77) are fixedly connected to the opposite sides of the two connecting plates (76). The top ends of the two connecting plates (76) abut against the inclined plates (74) on both sides. A grinding execution unit (8) is fixedly assembled at the bottom end of each of the two connecting plates (76).

5. The gluing device for sheet metal strips that also performs sanding according to claim 4, characterized in that: The grinding execution unit (8) includes a cylinder (81) fixedly connected to the bottom end of the connecting plate (76). The opening of the cylinder (81) faces the plate strip. Multiple spring rods (82) are arranged in a linear array inside the cylinder (81) along the conveying direction of the plate strip. A rubber skirt (83) is fixedly connected to the edge of the opening of the cylinder (81). A flexible grinding strip (84) is provided on the side of the rubber skirt (83) away from the cylinder (81). The edge of the rubber skirt (83) is sealed to the edge of the flexible grinding strip (84). The telescopic end of each spring rod (82) is fixedly connected to the back side of the flexible grinding strip (84). The cylinder (81) is also equipped with a limiting component (9) for limiting the telescopic stroke of the spring rod (82) to switch the telescopic state of the spring rod (82) to achieve rigid grinding or flexible grinding.

6. The gluing device for sheet metal strips that also performs sanding according to claim 5, characterized in that: The flexible grinding strip (84) has multiple chip guide grooves (85) on one side of the plate strip, and adjacent chip guide grooves (85) are arranged in parallel at intervals.

7. The gluing device for sheet metal strips that also performs sanding according to claim 5, characterized in that: Both ends of the flexible grinding strip (84) are provided with a shovel plate (86) and a limiting strip (87). When the two grinding execution units (8) clamp the plate strip in opposite directions, the shovel plate (86) can shovel the plate strip from the conveying roller surface of the first roller conveyor (1), so that the plate strip is separated from the conveying roller surface and is symmetrically clamped and positioned by the flexible grinding strips (84) of the grinding execution units (8) on both sides.

8. The gluing device for sheet metal strips that also performs sanding according to claim 5, characterized in that: The limiting component (9) includes a movable rod (91) that is slidably mounted in the cylinder (81) in the horizontal direction. Multiple limiting plates (92) are fixedly arranged at intervals at the bottom of the movable rod (91) along the conveying direction of the plate strip. The multiple limiting plates (92) correspond to multiple spring rods (82). Each spring rod (82) has a limiting groove (93) adapted to the limiting plate (92) on the outer periphery of its telescopic end. A transmission rack (94) is integrally formed on one side of the movable rod (91). A reduction motor is fixedly mounted in the cylinder (81). The output shaft of the reduction motor is connected to a gear (95). The gear (95) meshes with the transmission rack (94) to drive the movable rod (91) to slide back and forth, thereby driving the limiting plate (92) to be inserted into or disengaged from the limiting groove (93) of the corresponding spring rod (82).

9. The gluing device for sheet metal strips that also performs sanding according to claim 1, characterized in that: The flexible gluing assembly (4) includes gluing cylinders (41) symmetrically arranged on both sides of the connecting interval (3). The cylinder body of the gluing cylinder (41) is fixedly mounted on the frame of the first roller conveyor (1) or the second roller conveyor (2). The output shaft of the gluing cylinder (41) extends perpendicular to the conveying direction of the sheet metal strip. A hopper (42) is connected to the end of the output shaft of the gluing cylinder (41). A gluing roller (43) is rotatably arranged inside the hopper (42). The roller surface of (43) is used to apply glue to the side of the polished plate strip. An elastic connector (44) is provided between the output shaft of the glue cylinder (41) and the hopper (42). The elastic connector (44) is used to realize the elastic floating of the hopper (42). A horizontal plate (45) is provided at the connection interval (3). The horizontal plate (45) is fixedly connected to the first roller conveyor (1) or the second roller conveyor (2). Clamping rollers (46) are symmetrically arranged on the horizontal plate (45).

10. The gluing device for sheet metal strips that also performs sanding according to claim 9, characterized in that: The elastic connector (44) includes multiple spring rods (441) arranged at intervals along the direction perpendicular to the conveying direction of the sheet metal strips. The two ends of each spring rod (441) are fixedly connected to the output shaft end of the gluing cylinder (41) and the bottom of the hopper (42), respectively. A counter is fixedly mounted on one side of the first roller conveyor (1). The counter is electrically connected to the gluing cylinder (41) and is used to detect the number of sheet metal strips that have passed. When the counter detects that the last two sheet metal strips of the splicing process are being spliced, the gluing cylinder (41) on one side is controlled to drive the corresponding hopper (42) to retract, leaving only the gluing cylinder (41) on the other side to drive the hopper (42) to work in order to achieve gluing on one side.

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