A paving device for the automatic production of artificial boards

Abstract

The present application relates to the technical field of artificial board production equipment, and specifically discloses a material paving device for automatic production of artificial board, which comprises a belt conveyor, a distribution box is arranged directly above the belt conveyor, a discharging device is arranged at the left and right ends of the lower surface of the distribution box, a material scraping device is arranged in the distribution box, a material paving roller assembly is arranged directly below the discharging device, the material paving roller assembly comprises front and rear side plates, two groups of rotating rollers are arranged between the two side plates, the roller gap between each group of rotating rollers gradually increases from the discharging device to the middle of the distribution box, the material paving roller assembly further comprises an adjusting mechanism for synchronously and actively adjusting the roller gaps of the two groups of rotating rollers; the material paving device disclosed in the present application greatly simplifies the overall equipment structure, reduces the volume and floor space of the entire material paving equipment, has a larger application range, can meet the material paving requirements of various artificial boards, and has excellent use effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial board production equipment, and specifically discloses a material laying device for automatic production of artificial boards. BACKGROUND

[0002] In the production and processing of artificial boards, the wood flour or fiber material is processed by a glue mixer and then needs to be evenly laid on a conveying belt by a material laying device, and then the conveying belt sends the material into a pre-pressing machine for pre-pressing processing, and finally the pre-pressed material is sent to a hot press for pressing and forming. In order to improve the strength, stability and surface quality of the artificial board, the cross section of the artificial board is usually pressed from three layers of materials with different particle sizes, the middle layer is a flaky particle with larger particles and directionality, and the upper and lower layers are small particle board skins and branch debris. Therefore, in order to realize the three-layer laying effect of the artificial board, three sets of material laying devices are usually arranged above the conveying belt for laying different particle size materials.

[0003] The patent with the application number 2022100934720 discloses a material laying mechanism for processing multi-layer panels and a material laying method thereof, which includes a main conveying belt, a board laying machine and two material laying machines arranged directly above the main conveying belt; the material laying machines are used to lay a layer of granular material directly below; the board laying machine is used to lay a wood board directly below; along the conveying direction of the main conveying belt, the first material laying machine, the board laying machine and the second material laying machine are arranged in this order, and the first material laying machine and the second material laying machine are symmetrically arranged with the board laying machine. The material laying mechanism disclosed in the patent actually also uses three sets of material laying devices to realize the laying of three layers of materials, except that the middle layer is directly laid with a wood board instead of a mixed material after glue mixing. Although the uniform laying of multi-layer panels is achieved, the entire laying mechanism occupies a large area, and the particle size of the mixed material after glue mixing often differs due to differences in glue application amount and glue mixing effect, which cannot be adjusted in real time according to the glue mixing effect, resulting in difficulty in pressing the particle size of the three layers of materials in the cross section of the artificial board according to the required rules. Therefore, in view of the above-mentioned deficiencies of the existing material laying mechanism for processing multi-layer panels, the present application provides a material laying device for automatic production of artificial boards, which can effectively solve the above-mentioned technical problems. SUMMARY

[0004] The present application aims to provide a material laying device for automatic production of artificial boards to solve the problems of large equipment area, high investment and operation cost, and inability to adjust the particle size of the laying layer in real time according to the particle size of the mixed material after glue mixing.

[0005] The present application is achieved by the following technical solutions:

[0006] The utility model provides a kind of paving device for artificial board automatic production, including belt conveyor, the distribution box is arranged in the upper of the belt conveyor, the lower surface of the distribution box is provided with discharging device in left and right ends, the distribution box is provided with the material shoveling device that is transported to both sides discharging device, the paving roller assembly is arranged in the lower of the discharging device;

[0007] The paving roller assembly includes two parallel side plates arranged front and back, two groups of rotating rollers are arranged between the two side plates, and the end of each group of rotating rollers is connected with a transmission mechanism. The two groups of rotating rollers are respectively located directly below the corresponding discharging device, and the roll gap between each group of rotating rollers gradually increases from the direction of the discharging device to the middle of the distribution box. The paving roller assembly further includes an adjusting mechanism for synchronously and actively adjusting the roll gap of the two groups of rotating rollers.

[0008] As a further arrangement of the above-mentioned scheme, linear slots aligned with each group of rotating rollers are formed in the side plates, and limit sliders connected with the roller shafts of the rotating rollers are arranged in the linear slots. The outermost limit sliders are fixedly arranged. The adjusting mechanism includes gradually-changing-distance forked telescopic frames connected with the roller shafts of each group of rotating rollers. The end portions of the left and right groups of gradually-changing-distance forked telescopic frames are connected with crossbars. A control mechanism for driving the two crossbars to move closer to or away from each other is arranged below the middle position of the distribution box.

[0009] As a further arrangement of the above-mentioned scheme, the gradually-changing-distance forked telescopic frames are sequentially connected by multiple groups of X-shaped cross frames. The lengths of the two sides of the cross frames gradually increase from the direction of the discharging device to the middle of the distribution box. The roller shafts of the rotating rollers are rotationally connected with the intersection of the corresponding cross frames.

[0010] As a further arrangement of the above-mentioned scheme, the control mechanism includes a pushing device fixedly installed on the side plate. The end portion of the pushing device is connected with a pushing block located between the two crossbars. An eight-shaped slot is formed in the pushing block. Connection rods extending into the pushing block and acting with the eight-shaped slot are fixedly connected to the two crossbars.

[0011] As a further arrangement of the above-mentioned scheme, the transmission mechanism includes a transmission strip box arranged on the side plate. The end portion of the roller shaft of the rotating roller is connected with a driven bevel gear extending into the transmission strip box. A hollow shaft perpendicular to the rotating roller is rotationally arranged in the transmission strip box. A paving motor is connected to one end portion of the hollow shaft. A driving bevel gear is limitingly sleeved on the outer cylindrical surface of the hollow shaft. A spring is arranged in the hollow shaft to press the driving bevel gear towards the driven bevel gear.

[0012] As a further arrangement of the above-mentioned scheme, a slit is formed on the hollow shaft along the axial direction, a center block is arranged in the inner ring of the driven bevel gear and extends into the inner cavity of the hollow shaft through the slit, a partition block corresponding to each center block is fixedly arranged in the inner cavity of the hollow shaft, and the spring is connected between the center block and the partition block.

[0013] As a further arrangement of the above-mentioned scheme, a partition guide plate is arranged at the middle position of the distribution box, a feeding hopper in communication with the distribution box is arranged directly above the partition guide plate, and two said material shoveling devices are arranged on the left and right sides of the partition guide plate.

[0014] As a further arrangement of the above-mentioned scheme, the material shoveling device comprises two transmission belts arranged in parallel in the distribution box and a transmission belt driving mechanism, a plurality of material shoveling plates are arranged at equal intervals between the outer sides of the two transmission belts, and the side end of the transmission belt close to the partition guide plate is arranged in an inclined shape parallel to the side surface of the partition guide plate.

[0015] As a further arrangement of the above-mentioned scheme, the discharging device comprises a discharging cylinder in communication with the bottom wall of the distribution box, a discharging shaft is arranged in the discharging cylinder, a discharging motor is connected to one end of the discharging shaft, a plurality of material stirring plates are arranged in an annular array on the outer circular surface of the discharging shaft, and the material stirring plates are arranged as curved plates with a certain helix angle.

[0016] In the operation process of the artificial board automatic production material laying device, the mixed material after glue mixing is poured into the distribution box from the feeding hopper, then the mixed material is divided into left and right parts under the action of the partition guide plate, and at the same time, the mixed material is sent to the discharging device under the action of the material shoveling device. Since the material stirring plates in the discharging device are designed as curved plates with a certain helix angle, the mixed material can be continuously and uniformly dropped to the lower material laying roller assembly under the driving of the discharging shaft.

[0017] Due to the design that the roll gap of a row of rotating rollers gradually increases from the discharging device to the center of the distribution box, and under the action of the driving rotation of the rotating rollers, the mixed material is transported and moved to the center of the distribution box on the upper side of the row of rotating rollers. During the movement, due to the change of the roll gap size, the small particle mixed material falls on the upper surface of the lower conveying belt to form a fine material bottom layer, and then the large particle material gradually falls during the movement to the middle of the distribution box to form a coarse material middle layer. Subsequently, the mixed material moves to the lower side of another row of rotating rollers, at this time, the large particle material layer falls on the upper surface of the coarse material middle layer to thicken, and finally, the small particle material falls and covers on the upper surface of the thickened middle layer to form a fine material top layer, so that the laying of the artificial board upper, middle and lower three layers of material according to the particle size is completed under the action of one material laying device.

[0018] In addition, when the size of the shavings in the rubber mixing material is adjusted, or the mixing material is significantly different in agglomeration due to different application amounts or rubber mixing effects, the pushing device can be started according to the actual situation to move the pushing plate perpendicular to the moving direction of the conveying belt, and then the two lateral rods are moved closer to or away from each other under the action of the splayed groove and the connecting rod, and then the two lateral gradually changing distance fork telescopic frames are elongated or shortened, thereby controlling the gradually increasing or decreasing of the roll gap of a group of rotating rollers, so that the particle size of the different rubber mixing materials can be adjusted to meet the requirements of the particle size of the upper and lower layers of the artificial board, and the particle size of the finally prepared artificial board can be arranged to meet the requirements of the particle size of the upper and lower layers of the artificial board.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The artificial board automatic production paving device can complete the paving work of the artificial board according to the requirements of the upper and lower fine materials and the middle coarse material by one paving machine.

[0021] The paving device disclosed by the present application also has the structure design of the control mechanism, the gradually changing distance fork telescopic frame and the transmission mechanism, so that when the particle size of each layer of the artificial board needs to be adjusted, the gradually changing distance fork telescopic frame can be actively expanded or retracted through the control mechanism, so that the roll gap size of a group of rotating rollers can be adaptively adjusted, and the transmission mechanism can still effectively synchronously drive all the rotating rollers to rotate after the adjustment is completed. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a first angle three-dimensional structure schematic view of the present application.

[0024] Figure 2 It is a second angle three-dimensional structure schematic view of the present application.

[0025] Figure 3 It is a three-dimensional structure schematic view of the internal structure of the material distribution box in the present application.

[0026] Figure 4 Fig. 1 is a schematic view of the three-dimensional structure of the blanking device in the present application;

[0027] Figure 5 Fig. 2 is a schematic view of the three-dimensional structure of the material laying roller assembly in the second embodiment of the present application;

[0028] Figure 6 Fig. 3 is a schematic view of the three-dimensional assembly structure of the material laying roller assembly in the second embodiment of the present application;

[0029] Figure 7 Fig. 4 is a schematic view of the three-dimensional structure of the hollow shaft, driven bevel gear, spring, etc. in the present application. DETAILED DESCRIPTION

[0030] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the protection scope of the present application.

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments. Figures 1-7 The technical solutions in the embodiments of the present application will be described in detail below. Embodiment 1

[0032] Embodiment 1 discloses a material laying device for automatic production of artificial boards, referring to the drawings of Figure 1 and Figure 2 The main part of the device includes a belt conveyor 1 and a material distributing box 2, the material distributing box 2 is arranged directly above the belt conveyor 1, and a blanking device 3 is arranged at each left and right end of the lower surface of the material distributing box 2, and then a material laying roller assembly 4 is arranged directly below each blanking device 3.

[0033] The belt conveyor 1 includes a bottom box 101, a conveying seat 102 is arranged on the upper surface of the bottom box 101, a conveying belt 103 and a driving device 104 for driving the conveying belt 103 to run are arranged in the conveying seat 102, the driving device 104 is power input to the belt roller, and then the belt roller can make the conveying belt 103 move at a constant speed according to the set speed.

[0034] Referring to the drawings of Figure 3 and Figure 4The divider guide plate 201 is in isosceles triangle shape and is arranged at the middle position of the distribution box 2. A feeding hopper 202 is arranged on the upper surface of the distribution box 2 above the divider guide plate 201 and is connected with the inner cavity of the distribution box 2. A shoveling device is arranged in the distribution box 2 on both sides of the divider guide plate 201. The shoveling device includes four rotating shafts 203 arranged in the distribution box 2. The end of one of the rotating shafts 203 is connected with a driving motor 207 arranged on the outer side surface of the distribution box 2. A belt pulley 204 is arranged at the front and rear ends of the rotating shaft 203. A transmission belt 205 is arranged between the front and rear belt pulleys 204. A plurality of shoveling plates 206 are arranged on the outer side surfaces of the two transmission belts 205 at equal intervals. In order to facilitate the shoveling of the rubber mixing material accumulated on both sides of the divider guide plate 201 to one side of the paving roller assembly 4, the side ends of the transmission belt 205 are arranged in an inclined state parallel to the side surface of the divider guide plate 201.

[0035] The discharging device 3 includes a discharging cylinder 301 connected with the bottom wall of the distribution box 2. The upper end opening of the discharging cylinder 301 is aligned with the upper and lower ends of the outer side ends of the shoveling device. A discharging end 302 is arranged at the lower end of the discharging cylinder 301 and is arranged perpendicular to the moving direction of the conveying belt 103. A discharging shaft 303 is arranged in the discharging cylinder 301 in a concentric rotating manner. The discharging shaft 303 is connected with a discharging motor 304 arranged on the outer end surface of the discharging cylinder 301. A plurality of shoveling plates 305 are arranged on the outer circular surface of the discharging shaft 303 in an annular array. In the specific design, in order to avoid the intermittent discharging of the rubber mixing material in pulse form, the shoveling plates 305 are changed from the traditional straight plates to curved plates with a certain spiral angle, so that the rubber mixing material can be uniformly and continuously discharged.

[0036] Referring to the drawings Figure 1 The paving roller assembly 4 includes two side plates 401 fixedly arranged on the front and rear side surfaces of the bottom box 101. Two rows of rotating rollers 402 are arranged in a mirror-symmetrical rotating manner between the front and rear side plates 401 and are arranged above the conveying belt 103. The roller gap between each row of rotating rollers 402 is gradually increased in the direction from the discharging device 3 to the divider guide plate 201. The outermost rotating rollers 402 are arranged below the discharging device 3. A transmission mechanism 403 is arranged on the outer side surface of one of the side plates 401 and is used to synchronously drive the rotation of all the rotating rollers 402. The gradually increased roller gap of one row of rotating rollers 402 forms a screening mechanism with gradually increased screen holes.

[0037] The paving device for automatic production of artificial board disclosed in this embodiment 1 is in operation, the glue mixed material after glue mixing is conveyed into the feeding hopper 202 by the feeding machine, then falls into the inner cavity of the distribution box 2, and under the action of the separation guide plate 201, the glue mixed material can move uniformly into the distribution box 2. Then start the shoveling device, so that under the action of the shoveling device, the glue mixed material can be conveyed to the two sides of the discharging device 3 at the same time, and then under the action of the discharging device 3, the glue mixed material is uniformly discharged into the corresponding paving roller assembly 4 below.

[0038] The row of rotating rollers 402 in the paving roller assembly 4 convey the glue mixed material to the middle under the action of the transmission mechanism 403, and at the same time, due to the gradually increasing gap between the rotating rollers 402, the small particle material falls first to form a fine material bottom layer, and then the large particle material gradually falls during the movement to the middle, thereby forming a coarse material middle layer. Then move to the position directly below the other row of rotating rollers 402, at this time, the large particle material layer falls first onto the upper surface of the coarse material middle layer to thicken, and finally during the movement out of the group of rotating rollers 402, the small particle material finally falls and covers the upper surface of the thickened middle layer to form a fine material top layer, so that the paving requirements of the upper, middle and lower three layers of material on the artificial board according to the particle size are completed under the action of one paving device. Embodiment 2

[0039] Embodiment 2 discloses a paving device for automatic production of artificial board, which is further improved on the basis of the technical scheme in embodiment 1. The same as embodiment 1 will not be described again, and this embodiment 2 focuses on the improvement design of the paving roller assembly 4.

[0040] Referring to the accompanying drawings Figure 5 , the accompanying drawings Figure 6 and the accompanying drawings Figure 7 , the paving roller assembly 4 in this embodiment 2 includes two side plates 401 fixedly arranged on the front and rear sides of the bottom box 101 and a row of rotating rollers 402, and a straight slot 404 parallel to the moving direction of the conveying belt 103 is formed on the side plate 401. Then a limiting slide block 405 aligned with each rotating roller 402 is arranged in the straight slot 4, and the outermost limiting slide block 405 is fixedly connected with the straight slot 4, and then the roller shafts at both ends of the rotating roller 402 are rotationally connected with the corresponding limiting slide blocks 405.

[0041] The gradually-changing-distance forked telescopic frame 406 is composed of a plurality of X-shaped cross frames 407 connected in sequence, the length of the cross frame 407 on both sides gradually increases in the direction from the blanking device 3 to the separating guide plate 201, and the roller shaft of the rotating roller 402 is rotationally connected with the intersection of the corresponding cross frame 407, so that the size of the nip between the rotating rollers 402 gradually increases or decreases during the extension or shortening of the gradually-changing-distance forked telescopic frame 406.

[0042] In order to ensure that the transmission mechanism 403 can effectively synchronously drive all rotating shafts 402 during the change of the nip of the rotating rollers 402, the transmission mechanism 403 in the second embodiment includes a transmission bar box 4031 fixed on the side plate 401 outside the straight slot 404, and then a driven bevel gear 4032 in the transmission bar box 4031 is arranged at the end of the roller shaft on the rotating roller 402. A hollow shaft 4033 perpendicular to the rotating roller 402 is rotationally arranged in the transmission bar box 4031, and one end of the hollow shaft 4033 is connected with a laying motor 4034 on the outer end face of the transmission bar box 4031. A plurality of driving bevel gears 4035 are sleeved on the outer circular face of the hollow shaft 4033, and the driving bevel gears 4035 are meshingly arranged with the driven bevel gears 4032 one by one.

[0043] In addition, a slot 4036 is formed on the hollow shaft 4033 along the axial direction, a center block 4037 is arranged in the inner ring of the driving bevel gear 4035 through the slot 4036 and extends into the inner cavity of the hollow shaft 4033, a partition block 4038 aligned with each center block 4037 is fixed in the hollow shaft 4033, and a spring 4039 is connected between the center block 4037 and the partition block 4038, so that the driving bevel gear 4035 is always pushed to the corresponding driven bevel gear 4032 under the action of the spring 4039, and the two are smoothly and stably meshed. In addition, even if the position of the driven bevel gear 4032 moves appropriately with the rotating roller 402, the driven bevel gear 4032 can always be meshed with the driving bevel gear 4035 under the action of the spring 4039.

[0044] Finally, a pushing block 409 is arranged between the two rows of rotating rollers 402, and a pushing device 410 connected with the pushing block 409 is arranged on one of the side plates 401, which can be a pneumatic cylinder or a hydraulic cylinder 411. An eight-shaped groove 411 is formed on the pushing block 409, then a cross bar 412 is connected to the innermost ends of the two gradually-changing-distance forked telescopic frames 406 close to each other, and a connecting rod 413 extending into the pushing block 409 and acting with the eight-shaped groove 411 is fixedly connected to the cross bar 412.

[0045] The paving roller assembly 4 disclosed in the embodiment 2 can adjust the roll gap size between the rotating rollers 402 on line. In operation, the extension or shortening of the pushing device 410 is controlled to move the pushing block 409 perpendicularly to the running direction of the conveying belt 103, and then the left and right horizontal rods 412 can move close to or away from each other under the action between the splayed groove 411 and the two connecting rods 413. In the moving process of the horizontal rods 412, the gradually changing distance type forked telescopic frame 406 is extended or shortened, and then the roll gap between the same group of rotating rollers 402 can be gradually increased or decreased under the action of the gradually changing distance type forked telescopic frame 406, so that the paving adjustment can be made according to the particle size of the rubber mixture.

[0046] The above only is the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A material laying device for automated production of engineered wood panels, comprising a belt conveyor, characterized in that, A material distribution box is located directly above the belt conveyor. A feeding device is provided on both the left and right ends of the lower surface of the material distribution box. A material feeding device is provided in the material distribution box to convey the material to the feeding devices on both sides. A material spreading roller assembly is provided directly below the feeding device. The spreading roller assembly includes two parallel side plates, with two sets of rotating rollers arranged between the two side plates. Each set of rotating rollers is connected to a transmission mechanism at its end. The two sets of rotating rollers are located directly below the corresponding feeding device. The roller gap between each set of rotating rollers is designed to gradually increase from the feeding device toward the middle of the distribution box. The spreading roller assembly also includes an adjustment mechanism for synchronously and actively adjusting the roller gap between the two sets of rotating rollers. The transmission mechanism includes a transmission box mounted on the side plate. The end of the roller shaft of the rotating roller is connected to a driven bevel gear extending into the transmission box. A hollow shaft is rotatably mounted in the transmission box, perpendicular to the rotating roller. One end of the hollow shaft is connected to a material spreading motor. An upper limit bevel gear is fitted on the outer circumference of the hollow shaft. A spring is provided in the hollow shaft to press the active bevel gear against the driven bevel gear. The hollow shaft has an axially oriented slot, and the inner ring of the driven bevel gear has a center block that extends through the slot into the inner cavity of the hollow shaft. The inner cavity of the hollow shaft has a spacer corresponding to each center block, and the spring connects the center block and the spacer.

2. The material laying device for automated production of engineered wood panels according to claim 1, characterized in that, The side plate has a straight groove aligned with each set of rotating rollers. A limiting slider connected to the roller shaft of the rotating roller is provided in the straight groove, and the outermost limiting slider is fixedly installed. The adjustment mechanism includes a gradually spaced fork-type telescopic frame connected to the roller shaft of each set of rotating rollers. The ends of the two sets of gradually spaced fork-type telescopic frames that are close to each other are connected to crossbars. A control mechanism for driving the two crossbars to move closer or further apart is provided below the middle position of the material distribution box.

3. The material laying device for automated production of engineered wood panels according to claim 2, characterized in that, The gradually increasing distance fork telescopic frame is composed of multiple sets of X-shaped cross frames connected in sequence, and the length of both sides of the cross frame gradually increases from the feeding device towards the middle of the distribution box. The roller shaft of the rotating roller is rotatably connected to the intersection of the corresponding cross frame.

4. The material laying device for automated production of engineered wood panels according to claim 2, characterized in that, The control mechanism includes a pusher fixedly mounted on the side plate. The end of the pusher is connected to a pusher block located between two crossbars. The pusher block has a figure-eight groove. Each of the two crossbars has a connecting rod that extends into the pusher block and interacts with the figure-eight groove.

5. The material laying device for automated production of engineered wood panels according to claim 1, characterized in that, A dividing guide plate is provided in the middle of the material distribution box, and a feeding hopper connected to the material distribution box is provided directly above the dividing guide plate. The two material feeding devices are respectively provided on the left and right sides of the dividing guide plate.

6. The material laying device for automated production of engineered wood panels according to claim 5, characterized in that, The material handling device includes two transmission belts arranged in parallel in the material distribution box and a transmission belt drive mechanism. Multiple material handling plates are equally spaced between the outer sides of the two transmission belts, and the side of the transmission belt near the separating guide plate is inclined parallel to the side of the separating guide plate.

7. The material laying device for automated production of engineered wood panels according to claim 1, characterized in that, The feeding device includes a feeding cylinder connected to the bottom wall of the feeding box. The feeding cylinder is equipped with a feeding shaft inside, and one end of the feeding shaft is connected to a feeding motor. Multiple feeding plates are arranged in a ring array on the outer circular surface of the feeding shaft, and the feeding plates are configured as curved plates with a certain spiral angle.

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