Facing oriented strand board paving equipment

Abstract

The invention relates to the technical field of shaving board production equipment, in particular to facing oriented shaving board paving equipment which comprises a paving roller, a sliding block, a sliding rail and an adjusting assembly. The two ends of the paving roller are rotationally connected to the sliding blocks. The sliding block is slidably connected to the sliding rail. The sliding rail is arc-shaped and takes the midpoint of the axis of the paving roller as the center; the adjusting assembly is connected with the two sliding blocks, and the two sliding blocks can move reversely along the corresponding sliding rails through the adjusting assembly so that the inclination angle of the paving roller can be adjusted and fixed. The high-precision continuous paving device can meet the high-precision continuous paving requirements of wood shavings of multiple specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of particleboard production equipment, and particularly relates to a veneer-faced oriented strand board paving equipment. Background Art

[0002] In the field of manufacturing veneer-faced oriented strand board, the paving process is a key link determining the mechanical properties and surface quality of the product. The traditional production line generally adopts a fixed paving roller structure. As shown in the utility model patent with the authorization publication number CN213260035U, it realizes the layered paving of particles through the cooperation of a diverter valve and a scraper conveyor. However, such a device has fundamental defects: the paving roller and the bearing seat are rigidly fixedly connected and cannot adjust the inclination angle according to the particle shape and process parameters, resulting in limited orientation paving accuracy. Specifically, when the falling trajectory of long particles (>100mm) is affected by the coupling effect of gravity and inertia, it is easy to deviate from the preset direction, causing problems such as abnormal density gradient between layers of the slab and excessive surface waviness, directly affecting the longitudinal static bending strength and elastic modulus indexes of the finished board.

[0003] Existing improvement schemes mostly focus on the optimization of material shunt (such as the multi-stage diverter valve design in CN213260035U) or the upgrade of the pre-pressing process, but none of them break through the physical constraint of the fixed angle of the paving roller. Some alternative processes adopt manual paving or intermittent production. Although the orientation accuracy can be limitedly improved, new defects such as low efficiency and insufficient environmental protection of the adhesive exist. Research shows that the core contradiction of orientation deviation lies in the rigid coupling between the geometric parameters of the paving roller and the dynamics of particle movement: when the particle length, glue application amount or moisture content fluctuates, the paving roller with a fixed inclination angle cannot achieve self-alignment of particles through trajectory correction. Especially during the composite paving of the core layer / surface layer, it is necessary to frequently stop the machine to replace the roller body or adjust the conveying mechanism, seriously restricting the continuous operation efficiency of the production line.

[0004] Therefore, developing a mechanical structure of the paving roller with the ability of dynamic angle adjustment to achieve process self-adaptation of orientation accuracy has become the key path to break through the technical bottleneck of the industry. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a veneer-faced oriented strand board paving equipment, which can adapt to the high-precision continuous paving requirements of multi-specification particles.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A veneerable oriented strand board paving device, comprising a paving roller, sliders, slide rails and an adjustment assembly; both ends of the paving roller are rotatably connected to the sliders; the sliders are slidably connected to the slide rails; the slide rails are arc-shaped and centered on the midpoint of the axis of the paving roller; the adjustment assembly is respectively connected to the two sliders, and the two sliders can be moved in opposite directions along the corresponding slide rails through the adjustment assembly to adjust the inclination angle of the paving roller and fix it.

[0008] As a further solution of the present invention: wherein, the adjustment assembly is two fastening screws respectively corresponding to the sliders one by one, the fastening screws penetrate through and are threadedly connected to the sliders, and tightening the fastening screws can make the ends of the fastening screws abut against the slide rails.

[0009] As a further solution of the present invention: wherein, the adjustment assembly includes a four-bar linkage mechanism, a worm gear, a worm and a driving motor; the four-bar linkage mechanism is composed of two groups of first linkages and second linkages that are parallel to each other and are rotatably connected end to end; the slider is rotatably connected to the first linkage; the center of the worm gear is fixedly connected to the middle of the second linkage; the worm is drivingly connected to the worm gear; the driving motor is connected to the worm to drive the worm to rotate.

[0010] As a further solution of the present invention: wherein, a plurality of the slide rails on the same side are connected end to end to form a wavy structure.

[0011] As a further solution of the present invention: wherein, it further includes a conveyor, a lift and an angle adjustment mechanism; the conveyor is used for conveying the strands to be paved; the lift abuts against the lower part of the conveyor to adjust the falling height of the strands; the lower end of the angle adjustment mechanism is connected to the lift, and the upper end of the angle adjustment mechanism is connected to the conveyor to adjust the falling angle of the strands.

[0012] As a further solution of the present invention: wherein, the angle adjustment mechanism includes a bracket, a rotating plate and an electric push rod; the lower end of the bracket is fixedly connected to the lift; one end of the rotating plate is rotatably connected to the upper end of the bracket; both ends of the electric push rod are respectively rotatably connected to the other end of the rotating plate and the middle of the bracket.

[0013] As a further solution of the present invention: wherein, the lift is a scissor lift platform, and the scissor lift platform is driven by a hydraulic cylinder.

[0014] As a further solution of the present invention: wherein, it further includes a PLC controller and a detection module; the PLC controller is connected to the driving motor, or is connected to the electric push rod and the hydraulic cylinder; the detection module is connected to the PLC controller and can detect the type, moisture content and sizing amount of the strands.

[0015] As a further solution of the present invention: among them, the detection module includes a high-speed camera, a microwave moisture meter, and an infrared spectrometer.

[0016] Due to the adoption of the above technical solution, the present invention will have the following beneficial effects:

[0017] 1. By adjusting the components to move two sliders in the opposite direction along the corresponding slide rails, the paving roller rotates around the midpoint of its axis, thereby adjusting the inclination angle of the paving roller, making the grooves on the paving roller parallel to the falling trajectory of the wood shavings. Furthermore, without stopping the machine to replace the conveying mechanism, the directional paving accuracy can be maintained, enabling the continuous operation of the production line; compared with the paving roller with a fixed angle in the prior art, the present invention can adapt to the high-precision continuous paving requirements of multi-specification wood shavings.

[0018] 2. By means of the angle adjustment structure, the elevator, and the adjustment components, the appropriate falling angle, height, and inclination angle of the paving roller are adjusted, achieving a significant synergistic effect. The combined action of the three can optimize the directional arrangement accuracy and the interfacial bonding strength.

[0019] 3. Through the PLC controller and the detection module, the process from detection to execution can be achieved without manual intervention, which is more suitable for continuous production and has higher control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 For Figure 1 The upper view of the veneerable oriented particleboard paving equipment described in Embodiment 1 before adjusting the inclination angle of the paving roller;

[0022] Figure 2 For Figure 1 The upper view of the veneerable oriented particleboard paving equipment described in Embodiment 1 after adjusting the inclination angle of the paving roller;

[0023] Figure 3 For Figure 1 The side structure schematic diagram of the veneerable oriented particleboard paving equipment described in Embodiment 1;

[0024] Figure 4 The side structure schematic diagram of the veneerable oriented particleboard paving equipment described in Embodiment 2;

[0025] Figure 5Stereogram of the adjusting component of the veneerable oriented strand board paving equipment described in Embodiment 2;

[0026] Figure 6 Side structure schematic diagram of the veneerable oriented strand board paving equipment described in Embodiment 3;

[0027] Figure 7 Side structure schematic diagram of the veneerable oriented strand board paving equipment described in Embodiment 4.

[0028] The corresponding relationship between the labels of each attached drawing in the figure and the component names is as follows:

[0029] 1, paving roller; 2, slider; 21, bearing seat; 3, slide rail; 41, fastening screw; 42, four-bar linkage; 421, first link; 422, second link; 43, worm gear; 44, worm; 45, drive motor; 46, vertical rod; 5, conveyor; 6, elevator; 61, hydraulic cylinder; 7, angle adjusting mechanism; 71, bracket; 72, rotating plate; 73, electric push rod; 74, joint; 8, PLC controller; 81, detection module. Detailed implementation manners

[0030] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the following description is considered to be exemplary in nature rather than restrictive.

[0031] Embodiment 1

[0032] Please refer to Figure 1 and Figure 2 , the veneerable oriented strand board paving equipment of this embodiment includes a paving roller 1, a slider 2, a slide rail 3 and an adjusting component; among them, a plurality of paving rollers 1 are provided, and all the paving rollers 1 are installed in the rack along the width direction of the rack, and the above is the design of an existing roller bed; in addition, both ends of each paving roller 1 are horizontally rotatably connected to a bearing seat 21, and the bearing seat 21 is vertically rotatably connected to the slider 2 through a slewing bearing; the slider 2 is in a cuboid shape and is slidably sleeved on the slide rail 3; the slide rail 3 is arc-shaped and is fixedly arranged on the outside of the rack with the midpoint of the axis of the paving roller 1 as the center; the adjusting component is respectively connected to the two sliders 2; by the adjusting component, the two sliders 2 can move in opposite directions along the corresponding slide rail 3 to adjust the inclination angle of the paving roller 1 and fix it. It should be noted that the motor drivingly connected to the paving roller 1 is fixedly connected to the slider 2, so that the motor can rotate and adjust the angle along with the paving roller 1, thus not affecting the transmission of the paving roller 1.

[0033] As a preference of the embodiment, considering that the slide rail 3 is arc-shaped and centered on the midpoint of the axis of the paving roller 1, resulting in a relatively long arc length of the slide rail 3, based on this, multiple slide rails 3 on the same side of the frame can be welded end to end to form a wavy structure, and both ends of the wavy structure are respectively welded to both ends of the frame to save the occupied space of the frame.

[0034] Specifically, as Figure 3 shown, the adjusting assembly is two fastening screws 41 respectively corresponding to the sliders 2 one by one. The fastening screws 41 penetrate through the sliders 2 and are threadedly connected. Tightening the fastening screws 41 can make the ends of the fastening screws 41 abut against the slide rail 3, thereby fixing the sliders 2; loosening the fastening screws 41 can release the restriction of the sliders 2, so that the sliders 2 can be manually moved along the slide rail 3 for adjustment.

[0035] In this embodiment, when paving wood shavings of different specifications, the length, glue application amount or moisture content of the wood shavings changes, resulting in the falling trajectory of the wood shavings deviating from the preset path. At this time, it is necessary to move the two sliders 2 along the corresponding slide rail 3 in the reverse direction through the adjusting assembly, so that the paving roller 1 rotates with the midpoint of its axis as the center, thereby adjusting the inclination angle of the paving roller 1, making the grooves on the paving roller 1 parallel to the falling trajectory of the wood shavings, and then being able to maintain the directional paving accuracy and keep the production line running continuously without stopping to replace the conveyor 5 structure.

[0036] Embodiment 2

[0037] Please refer to Figure 4 and Figure 5 . The difference between this embodiment and Embodiment 1 is that the adjusting assembly includes a four-bar linkage mechanism 42, a worm gear 43, a worm 44 and a driving motor 45; the four-bar linkage mechanism 42 is composed of two groups of first linkages 421 and second linkages 422 that are parallel to each other and are rotatably connected end to end; multiple vertical rods 46 respectively corresponding to the sliders 2 one by one are vertically welded on the first linkages 421, and these vertical rods 46 are evenly spaced along the length direction of the first linkages 421. The motor driving the paving roller 1 is installed on the second linkages 422 and can rotate with the rotation of the second linkages 422; the sliders 2 are axially fixedly sleeved on the upper ends of the vertical rods 46; there are two worm gears 43, and the centers of the two worm gears 43 are respectively fixedly connected to the middle parts of the two second linkages 422; the worm 44 extends along the length direction of the first linkages 421, and both ends of the worm 44 are respectively drivingly connected to the above-mentioned worm gears 43; the driving motor 45 is fixedly installed outside the four-bar linkage mechanism 42, and the output shaft of the driving motor 45 is coaxially connected to the worm 44 to drive the worm 44 to rotate.

[0038] In this embodiment, when laying different specifications of wood chips, the driving motor 45 drives the worm 44 to rotate. The rotation of the worm 44 drives the worm gear 43 to rotate. The rotation of the worm gear 43 drives the two second connecting rods 422 to move in opposite directions through the rotation of the first connecting rod 421. The two second connecting rods 422 moving in opposite directions drive the two sliders 2 to move in opposite directions along the corresponding slide rails 3, thereby adjusting the inclination angle of the laying roller 1. After the adjustment is completed, the laying roller 1 is fixed by the self-locking of the worm gear 43. Compared with the manual adjustment in Embodiment 1, the transmission mechanism of the worm gear 43 and the worm 44 is used for adjustment, with higher adjustment accuracy, more convenient and labor-saving.

[0039] Embodiment 3

[0040] Please refer to Figure 6 , on the basis of Embodiment 2, the veneer-oriented particleboard laying equipment in this embodiment further includes a conveyor 5, a lift 6 and an angle adjustment mechanism 7; among them, the conveyor 5 can adopt an existing scraper conveyor, which is used to convey the wood chips to be laid to the laying roller 1; the lift 6 abuts against the lower part of the conveyor 5 to adjust the height of the conveyor 5, so as to adjust the falling height of the wood chips; the lower end of the angle adjustment mechanism 7 is connected to the abutting surface of the lift 6 and the conveyor 5, so that it can lift synchronously with the lift 6. The upper end of the angle adjustment mechanism 7 is connected to the conveyor 5, so that the wood chips output by the conveyor 5 are thrown out after passing through the angle adjustment mechanism 7 and fall on the laying roller 1. The throwing angle of the wood chips can be adjusted through the angle adjustment mechanism 7, thereby adjusting the falling angle of the wood chips.

[0041] In this embodiment, when the falling height of the wood chips is adjusted to be appropriate, the interference received by the wood chips during the falling process is small, and the initial orientation given during feeding can be maintained well, that is, the wood chips after orientation treatment fall at an appropriate height and can still maintain a high proportion of the wood chips arranged in the predetermined direction when reaching the laying surface. When the falling angle of the wood chips is adjusted to be appropriate, the falling angle matches the long axis direction of the wood chips, which can guide the wood chips to fall on the laying surface in a more favorable posture, reduce the tumbling and rotation of the wood chips, and enhance the orientation of the wood chip arrangement.

[0042] Specifically, the angle adjustment mechanism 7 includes a bracket 71, a rotating plate 72 and an electric push rod 73; the lower end of the bracket 71 is welded to the lift 6; one end of the rotating plate 72 is rotatably connected to the upper end of the bracket 71 and is connected to the conveyor 5 through an existing joint 74; both ends of the electric push rod 73 are respectively rotatably connected to the other end of the rotating plate 72 and the middle part of the bracket 71. By controlling the telescopic movement of the electric push rod 73, the rotating plate 72 is driven to rotate, so that the falling angle of the wood chips can be adjusted when the wood chips output by the conveyor 5 pass through the rotating plate 72.

[0043] More specifically, the above-mentioned lift 6 can adopt an existing scissor lift platform, which is usually driven by a hydraulic cylinder 61. The scissor arms of the scissor lift platform are expanded or contracted by the telescopic movement of the hydraulic cylinder 61. As the scissor arms expand, the platform surface rises; when it is necessary to lower, the hydraulic oil is returned to the fuel tank by controlling the valve, the scissor arms contract, and the platform surface descends. The conveyor 5 and the angle adjustment mechanism 7 are fixedly installed on the platform surface of the scissor lift platform to achieve synchronous lifting of the two.

[0044] In this embodiment, by adjusting the appropriate falling angle (α), height (H) of the wood chips and the tilting angle (β) of the paving roller 1, a significant synergistic effect is achieved. The combined action of the three can optimize the orientation arrangement accuracy and the interfacial bonding strength:

[0045] 1. By widening the paving surface coverage range with α and precisely correcting the posture of the wood chips with β, the combined effect can reduce the orientation deviation in the edge area (experimental data: the edge θ is reduced from 8.2° to 3.5°).

[0046] 2. When H is relatively low (such as 50 cm), the speed of the wood chips is high, and β is increased to 25° to offset the deflection caused by inertia; when H is relatively high (150 cm), the speed is low, and β can be slightly reduced to 18° (experimental verification: the interfacial bonding strength is increased by 23%).

[0047] Therefore, the synergistic adjustment of the falling parameters (α / H) and the tilting angle (β) of the paving roller 1 can significantly improve the orientation accuracy and the performance of the board through the coupling effect of the spatial trajectory control (α / H) and the terminal posture correction (β).

[0048] Embodiment 4

[0049] Please refer to Figure 7 , on the basis of Embodiment 3, the veneer - oriented particleboard paving equipment of this embodiment further includes a PLC controller 8 and a detection module 81; the PLC controller 8 is connected to the driving motor 45, the electric push rod 73 and the hydraulic cylinder 61; the detection module 81 includes a high - speed camera, a microwave moisture meter and an infrared spectrometer which are respectively connected to the PLC controller 8. The three can respectively detect the type, moisture content and sizing amount of the wood chips and transmit the data to the PLC controller 8.

[0050] When the conveyor 5 in this embodiment conveys the wood shavings into the detection area of the detection module 81, a high-speed camera connected to the image recognition system captures images of the wood shavings (analyzes the length, width, and aspect ratio of the wood shavings), and transmits the data to the PLC controller 8. The PLC controller 8 matches the preset database according to the shape of the wood shavings to determine its air resistance coefficient and the optimal range of falling parameters (for example, long wood shavings need to reduce H and increase α). The microwave moisture meter non-contact online and real-time detects the moisture content of the wood shavings by emitting microwaves, and transmits the data to the PLC controller 8. The PLC controller 8 determines the target value according to the control logic "moisture content ↑ → wood shaving density ↑ → need to reduce H to reduce the falling time, and at the same time increase α to offset the too fast vertical speed caused by gravity". The infrared spectrometer determines the sizing amount by detecting the adhesive coverage rate, and transmits the data to the PLC controller 8. The PLC controller 8 determines the target value according to the control logic "sizing amount ↑ → wood shaving adhesiveness ↑ → need to increase H to extend the falling time to promote dispersion, and at the same time reduce α to prevent stacking caused by adhesive adhesion". After determining the target value, the PLC controller 8 controls the drive motor 45, the electric push rod 73, and the hydraulic cylinder 61 to perform adjustments according to the target value.

[0051] In this example, since there is no need for manual intervention from detection to execution, compared with Embodiment 3, it is more suitable for continuous production and has higher control accuracy.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A facing-oriented particleboard laying device, characterized in that It includes a paving roller (1), sliders (2), slide rails (3) and an adjustment assembly; both ends of the paving roller (1) are rotatably connected to the sliders (2); the sliders (2) are slidably connected to the slide rails (3); the slide rails (3) are arc-shaped and centered on the midpoint of the axis of the paving roller (1); the adjustment assembly is respectively connected to the two sliders (2), and the two sliders (2) can be moved in opposite directions along the corresponding slide rails (3) through the adjustment assembly to adjust and fix the inclination angle of the paving roller (1).

2. The facing-orientable particleboard laying equipment according to claim 1, wherein The adjustment assembly is two fastening screws (41) respectively corresponding to the sliders (2) one by one. The fastening screws (41) penetrate through and are threadedly connected to the sliders (2). Tightening the fastening screws (41) can make the ends of the fastening screws (41) abut against the slide rails (3).

3. The facing-orientable particleboard laying equipment according to claim 1, characterized in that, The adjustment assembly includes a four-bar linkage mechanism (42), a worm gear (43), a worm (44) and a driving motor (45); the four-bar linkage mechanism (42) is composed of two groups of first linkages (421) and second linkages (422) that are parallel to each other and are rotatably connected end to end; the slider (2) is rotatably connected to the first linkage (421); the center of the worm gear (43) is fixedly connected to the middle of the second linkage (422); the worm (44) is drivingly connected to the worm gear (43); the driving motor (45) is connected to the worm (44) to drive the worm (44) to rotate.

4. The facing-orientable particleboard laying equipment according to claim 1, characterized in that, A plurality of the slide rails (3) on the same side are connected end to end to form a wavy structure.

5. The facing-orientable particleboard laying equipment according to claim 1, characterized in that, It also includes a conveyor (5), a lift (6) and an angle adjustment mechanism (7); the conveyor (5) is used for conveying the wood chips to be paved; the lift (6) abuts against the lower part of the conveyor (5) to adjust the falling height of the wood chips; the lower end of the angle adjustment mechanism (7) is connected to the lift (6), and the upper end of the angle adjustment mechanism (7) is connected to the conveyor (5) to adjust the falling angle of the wood chips.

6. The facing-orientable particleboard laying equipment according to claim 5, wherein The angle adjustment mechanism (7) includes a bracket (71), a rotating plate (72) and an electric push rod (73); the lower end of the bracket (71) is fixedly connected to the lift (6); one end of the rotating plate (72) is rotatably connected to the upper end of the bracket (71); both ends of the electric push rod (73) are respectively rotatably connected to the other end of the rotating plate (72) and the middle of the bracket (71).

7. The facing-orientable particleboard laying equipment according to claim 6, characterized in that, The lift (6) is a scissor lift platform, and the scissor lift platform is driven by a hydraulic cylinder (61).

8. The facing-orientable particleboard laying device according to claim 3 or 7, characterized in that, It also includes a PLC controller (8) and a detection module (81); the PLC controller (8) is connected to the driving motor (45), or is connected to the electric push rod (73) and the hydraulic cylinder (61); the detection module (81) is connected to the PLC controller (8) and can detect the type, moisture content and sizing amount of the wood chips.

9. The facing-orientable particleboard laying device according to claim 8, wherein, The detection module (81) includes a high-speed camera, a microwave moisture meter and an infrared spectrometer.

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