CN113199591A

CN113199591A - Spreading machine and mounting method thereof

Info

Publication number: CN113199591A
Application number: CN202110624316.8A
Authority: CN
Inventors: 杨英臣; 刘志桐; 赵飞; 陈为亮
Original assignee: Yalian Machinery Ltd By Share Ltd
Current assignee: Yalian Machinery Ltd By Share Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-08-03

Abstract

A paving machine and its installation method, the paving machine includes the first material spreads the apparatus, it includes the first material spreads the main body and first sweeping the flat device, the first material spreads the main body and has the first discharge outlet; the first sweeping device is arranged at the downstream of the first discharge port and comprises a first sweeping mechanism, a first lifting mechanism and a first negative pressure suction box, and the first sweeping mechanism is arranged at the first side of the material conveying belt; the first lifting mechanism is arranged on a second side, opposite to the first side, of the material conveying belt and is configured to lift or lower the material conveying belt in regions so as to adjust the distance between the first sweeping mechanism and the first lifting mechanism in regions; first negative pressure suction case sets up in the second side, and first elevating system sets up in first negative pressure suction case, and first negative pressure suction case is configured to carry out the negative pressure to material transportation area and adsorbs. The spreading machine has a transverse density dynamic adjusting function, and the formed plate has higher thickness and density uniformity, so that the plate has better physical properties.

Description

Spreading machine and mounting method thereof

Technical Field

Embodiments of the present disclosure relate to a paving machine and a method of installing the same.

Background

Particle board is an artificial board made up by cutting various branches, small-diameter wood, fast-growing wood and wood dust into chips with a certain specification, drying, mixing with additives such as sizing material, hardening agent and water-proofing agent, and pressing at a certain temp. and pressure. In the production process of shaving boards, the process of spreading the fragmented materials on the conveyor belt, also known as the process of wood shaving or slab laying, is carried out with a laying machine, and the laying process has a decisive influence on the performance of the shaving boards.

Disclosure of Invention

At least one embodiment of the present disclosure provides a paving machine comprising a first material spreading device, wherein the first material spreading device comprises a first material spreading body having a first discharge opening and a first sweeping device; the first leveling device is arranged at the downstream of the first discharge hole and comprises: the first sweeping mechanism is arranged on the first side of the material conveying belt; a first lifting mechanism disposed at a second side of the material transport belt opposite to the first side and configured to lift or lower the material transport belt by regions to adjust a distance between the first sweeping mechanism and the first lifting mechanism by regions; and the first negative pressure suction box is arranged on the second side, wherein the first lifting mechanism is arranged in the first negative pressure suction box, and the first negative pressure suction box is configured to perform negative pressure adsorption on the material conveying belt.

For example, in the paving machine provided by at least one embodiment of the present disclosure, the first sweeping device further includes: the first collecting mechanism is arranged on the first side, arranged on one side of the first sweeping mechanism and configured to collect materials.

For example, at least one embodiment of the present disclosure provides a spreading machine, wherein the first material spreading device further includes: a density measuring device disposed downstream of the first sweeping mechanism and configured to be movable to measure densities of the material at different locations on the material transport belt.

For example, at least one embodiment of the present disclosure provides a paving machine, wherein the first lifting mechanism includes a plurality of lifting units arranged in a row or an array, and each of the plurality of lifting units is configured to be independently liftable.

For example, at least one embodiment of the present disclosure provides the paving machine wherein the first lift mechanism comprises a piano lift mechanism.

For example, at least one embodiment of the present disclosure provides the paving machine, wherein each of the plurality of lifting units includes a displacement sensor configured to monitor a lifting displacement amount of the lifting unit.

For example, the paving machine provided by at least one embodiment of the present disclosure further includes a controller, wherein the controller is connected in communication with the density measuring device and the plurality of lifting units, and is configured to adjust the lifting displacement of the plurality of lifting units according to the measurement result of the density measuring device.

For example, at least one embodiment of the present disclosure provides a spreading machine, wherein the first material spreading device further includes: a laser ranging device disposed upstream of the first sweeping mechanism configured to measure a height of the material on the material transport belt.

For example, at least one embodiment of the present disclosure provides the paving machine, wherein the control unit is further connected in communication with the laser ranging device and the first sweeping mechanism, and is configured to adjust a height of the first sweeping mechanism according to a measurement result of the laser ranging device.

For example, at least one embodiment of the present disclosure provides the paving machine wherein the first sweeping mechanism comprises a sweeping roller, a roller surface of the sweeping roller comprises friction elements, and the friction elements comprise needle-shaped nails, saw-toothed blades or thin sheets.

For example, at least one embodiment of the present disclosure provides the paving machine wherein the first negative pressure suction box includes a centrifugal fan configured to provide the negative pressure.

For example, at least one embodiment of the present disclosure provides a paving machine wherein the first collection mechanism includes a suction device or a transport device configured to provide the captured material to the first material spreading body.

For example, at least one embodiment of the present disclosure provides the paving machine further comprising a second material spreading device disposed downstream of the first material spreading device, wherein the second material spreading device comprises a second material spreading body having a second discharge outlet and a second sweeping device; the second sweeps the flat device and sets up in the low reaches of second discharge gate, includes: the second sweeping mechanism is arranged on the first side of the material conveying belt; a second lifting mechanism disposed at a second side of the material transport belt and configured to lift or lower the material transport belt by regions to adjust a distance between the second sweeping mechanism and the second lifting mechanism by regions; and a second negative pressure suction box disposed at the second side, wherein the second lifting mechanism is disposed within the second negative pressure suction box, and the second negative pressure suction box is configured to perform negative pressure suction on the material transport belt.

For example, at least one embodiment of the present disclosure provides that the placement machine further includes a third material distribution device disposed downstream of the second material distribution device, wherein the third material distribution device includes a third material distribution body having a third discharge outlet.

At least one embodiment of the present disclosure further provides an installation method of a paving machine, including: mounting the first material spreading body and the first sweeping mechanism of the first sweeping device on a first side of the material transport belt, and mounting a first elevating mechanism and a first negative pressure suction box of the first sweeping device on a second side of the material transport belt, wherein the first elevating mechanism is mounted in the first negative pressure suction box, and the first negative pressure suction box is configured to perform negative pressure suction on the material transport belt.

For example, at least one embodiment of the present disclosure provides a mounting method of a paving machine, further including: a density measuring device is mounted on a first side of the material transport belt and downstream of the first sweeping mechanism such that the density measuring device is movable at least in a direction perpendicular to the transport direction of the material transport belt to measure the density of material at different locations on the material transport belt.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.

Fig. 1 is a schematic structural diagram of a spreading machine according to at least one embodiment of the present disclosure; and

fig. 2 is a schematic partial structural view of a first material spreading device of a spreading machine according to at least one embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As mentioned above, the paving process has a decisive influence on the properties of the resulting particle board. For example, the density of the shaving board obtained by hot pressing the uniformly paved plate blank is consistent, the expansion and contraction of each part in the shaving board are also consistent, the warping deformation is not easy to occur, and the physical and mechanical properties of the plate are also consistent. However, the inventors of the present disclosure have found in practice that during the fall of the fragmented material from the spreading device of the spreading machine, uncontrolled air vortices occur which can lead to an undesirable weight per unit area or density distribution of the fragmented material in the width and length directions of the mat, particularly more pronounced in the width direction of the mat (i.e. perpendicular to the conveying direction of the conveyor belt transporting the fragmented material). Although the prior art has adopted many solutions to this problem, for example, static adjustment means of arranging auxiliary devices such as the uniform distribution roller, the comb-shaped material guide plate and the auxiliary air flow device inside the dispersing device is adopted, the static adjustment means cannot obtain ideal effects due to the dynamic fluctuation of the shape and the water content of the fragmented materials.

At least one embodiment of the present disclosure provides a paving machine and a method of installing the same, the paving machine including a first material spreading device including a first material spreading body having a first discharge opening and a first sweeping device; the first sweeping device is arranged at the downstream of the first discharge port and comprises a first sweeping mechanism, a first lifting mechanism and a first negative pressure suction box, and the first sweeping mechanism is arranged at the first side of the material conveying belt; the first lifting mechanism is arranged on a second side, opposite to the first side, of the material conveying belt and is configured to lift or lower the material conveying belt in regions so as to adjust the distance between the first sweeping mechanism and the first lifting mechanism in regions; first negative pressure suction case sets up in the second side, and first elevating system sets up in first negative pressure suction case, and first negative pressure suction case is configured to carry out the negative pressure to material transportation area and adsorbs.

The spreading machine provided by at least one embodiment of the disclosure has a transverse density dynamic adjusting function, can adjust scattered fragment materials on the conveyor belt into a plate blank with uniform weight or density per unit area at least along the width direction, and can save the fragment materials; on the other hand, first negative pressure suction case can produce the negative pressure adsorption to the material transportation area for the at least horizontal profile curve of material transportation area can be adjusted more nimble and accurate, thereby realizes the accurate regulatory action of first scanning device to the density of piece material. The paving machine provided by the embodiment of the disclosure can be used for forming plates such as shaving boards and oriented strand boards, and the formed plates have higher thickness and density uniformity and further have better physical properties.

It is noted that references to "lateral" and "width direction" in embodiments of the present disclosure refer to directions perpendicular to the conveying direction of the material conveyor belt in the plane of the material conveyor belt.

The paving machine and the method of installing the paving machine of the present disclosure are described below with reference to several specific examples.

At least one embodiment of the present disclosure provides a paving machine, and fig. 1 shows a schematic structural diagram of the paving machine. As shown in fig. 1, the spreading machine comprises a first material spreading device comprising a first material spreading body 1 and a first sweeping device.

For example, the first material spreading body 1 may contain a material, which may be in the form of chips or particles, and the first material spreading body 1 has a first discharge opening 1-1, and the first discharge opening 1-1 faces the material conveyor belt 10 to spread the material 8 on the material conveyor belt 10.

For example, the first sweeping device is arranged at the downstream of the first discharge port 1-1 to process the materials discharged from the first discharge port 1-1. For example, the first sweeping device comprises a first sweeping mechanism 4-1, a first lifting mechanism 7-1 and a first negative pressure suction box 12-1.

For example, a first sweeping mechanism 4-1 is provided on a first side (shown as the upper side in the figure) of the material conveyor belt 10 for sweeping material spread on the material conveyor belt 10. For example, the conveying direction 9 of the material conveyor belt 10 is the horizontal right direction in the figure, and the extending direction of the first sweeping means 4-1 is perpendicular to the conveying direction 9 of the material conveyor belt 10, i.e. perpendicular to the paper in fig. 1, to sweep the material spread on the material conveyor belt 10 over the whole surface.

For example, the first lifting mechanism 7-1 is disposed on a second side (shown as a lower side in the figure) of the material conveyer belt 10 opposite to the first side, and is configured to lift or lower the material conveyer belt 10 by regions to adjust the distance between the first sweeping mechanism 4-1 and the first lifting mechanism 7-1 by regions, that is, to adjust the distance between the first sweeping mechanism 4-1 and the material conveyer belt 10 by regions, thereby controlling the lateral volume flow, thickness, density, etc. of the material conveyed on the material conveyer belt 10.

For example, the first negative pressure suction box 12-1 is disposed at the second side of the material conveyer belt 10, the first elevating mechanism 7-1 is disposed in the first negative pressure suction box 12-1, the first negative pressure suction box 12-1 is configured to perform negative pressure adsorption on the material conveyer belt 10, so that the material conveyer belt 10 can always attach to the first negative pressure suction box 12-1 when the material conveyer belt 10 is transported and the first elevating mechanism 7-1 is configured to elevate the material conveyer belt 10, so that the material conveyer belt 10 always runs on a predetermined track, the material conveyer belt 10 is ensured not to deviate, and further the distance between the first scanning mechanism 4-1 and the material conveyer belt 10 is ensured to be a required distance, namely, the distance adjusted by the first elevating mechanism 7-1 is ensured not to deviate, and further the thickness deviation of the material on the material conveyer belt 10 is avoided, ensuring uniformity of the material on the material conveyor belt 10.

For example, in some embodiments, the first suction box 12-1 may include a centrifugal fan configured to provide negative pressure, such as to place the first suction box 12-1 in a vacuum state, so that the first suction box 12-1 can perform an effective negative pressure suction effect on the material transport belt 10, and the material transport belt 10 can move smoothly along a predetermined trajectory on the first suction box 12-1 without lateral displacement and buckling deformation. Production practices prove that the configuration can effectively control the running track of the material conveying belt 10, so that the first lifting mechanism 7-1 can effectively control the transverse volume flow, the thickness, the density and the like of the materials conveyed on the material conveying belt 10.

For example, in some embodiments, as shown in fig. 1, the first sweeping device may further include a first collecting mechanism 6-1, the first collecting mechanism 6-1 is disposed on a first side of the material conveyer belt 10, and is disposed on a side of the first sweeping mechanism 4-1, such as upstream of the first sweeping mechanism 4-1, shown as the left side of the material conveyer belt 10, and configured to collect material, such as to collect excess material swept by the first sweeping mechanism 4-1, so as to recycle the excess material. For example, the first collection mechanism 6-1 includes a suction device or a transport device configured to provide the captured material to the first material spreading body 1.

For example, in some embodiments, as shown in fig. 1, the first material spreading device may further include a density measuring device 11-1, and the density measuring device 11-1 is disposed downstream of the first sweeping mechanism 4-1 and configured to be movable, for example, in a direction perpendicular to the conveying direction 9 of the material conveyor belt 10, for example, the density measuring device 11-1 may be moved in the same direction as the extending direction of the first sweeping mechanism 4-1, so as to measure the density of the material at different positions on the material conveyor belt 10, for example, by detecting the density of the material swept by the first sweeping mechanism 4-1 through X-ray scanning.

For example, fig. 2 shows a schematic structural view of the first sweeping mechanism, the first lifting mechanism and the first negative pressure suction box of the spreading machine in fig. 1. For example, as shown in fig. 2, the first elevating mechanism 7-1 may include a piano type elevating mechanism. The first lifting mechanism 7-1 comprises a plurality of lifting units 7-3 which are arranged in a row or an array, each lifting unit 7-3 is configured to be capable of lifting independently so as to adjust the height of the first lifting mechanism 7-1 in different areas, and further adjust the distance between the first scanning mechanism 4-1 and the first lifting mechanism 7-1 in different areas.

The number of the lifting units 7-3 is not particularly limited in the embodiments of the present disclosure, for example, in some embodiments, the first lifting mechanism 7-1 includes at least six lifting units 7-3 to achieve a precise adjustment effect. For example, each of the lifting units 7-3 includes a displacement sensor (not shown in the drawings) configured to monitor a lifting displacement amount of the lifting unit 7-3. For example, each of the lifting units 7-3 may be driven by a stepping motor.

For example, in some embodiments, the paving machine may further include a controller C communicatively connected to the density measuring device 11-1 and the plurality of lifting units 7-3, and configured to adjust the amount of lifting displacement of the plurality of lifting units 7-3 according to the measurement result of the density measuring device 11-1.

For example, after the first sweeping mechanism 4-1 sweeps, the density measuring device 11-1 may detect the material after sweeping, and detect whether the material is level, whether the material is at a desired density, etc., and then the controller C may obtain the measurement result of the density measuring device 11-1, and according to the measurement result, compare the measurement result (e.g., compare the material density difference at different positions or compare the material density difference at different positions with a predetermined material density, etc.), calculate (e.g., calculate whether each lifting unit 7-3 needs to be lifted or lowered, lift amount, etc.) and control the lift displacement amount of the plurality of lifting units 7-3, and locally lift the working reference surface of the material conveyer belt 10 by each independently controlled lifting unit 7-3, thereby adjusting the throughput of the material at different heights in different width regions, the state of the material, such as whether the material is flat or not, whether the material is in the required density or not, is compensated in real time, so that the material which is swept by the first sweeping mechanism 4-1 again is in the required state, such as the material with the required thickness and uniform density, and the function of dynamically adjusting the transverse density of the material in real time is realized.

For example, in some embodiments, the first material spreading device may further comprise a laser distance measuring device (not shown), which may be disposed upstream of the first sweeping mechanism 4-1 and configured to measure the height of the material on the material conveyor belt 10, i.e., the laser distance measuring device may measure the height of the material before the first sweeping mechanism 4-1 sweeps, and then configure the height of the first sweeping mechanism 4-1 according to the height of the material.

For example, in some embodiments, the control unit C may be further communicatively coupled to the laser ranging device and the first sweeping mechanism 4-1, and configured to adjust the height of the first sweeping mechanism 4-1 based on the measurement of the laser ranging device, and thereby control the thickness, density, etc. of the material passing through the first sweeping mechanism 4-1.

For example, as shown in FIG. 2, the first sweeping mechanism 4-1 may comprise a sweeping roller 5-1, the roller surface of the sweeping roller 5-1 comprises a friction element 5-3, the friction element 5-3 comprises a needle-shaped nail, a saw-tooth blade or a thin sheet, and the excessive material of the material 8 on the material conveying belt 10 beyond the rotating circumferential surface of the sweeping roller 5-1 is rejected into the first collecting mechanism 6-1 by the friction element 5-3 on the surface of the sweeping roller at a high speed for recycling. For example, the sweep roller 4-1 may be rotated at a high speed over the material, with the lower surface of the sweep roller 4-1 rotating in a direction opposite to the conveying direction 9 of the material conveyor belt 10.

For example, in some embodiments, as shown in fig. 1, the paving machine may further include a second material distribution device disposed downstream of the first material distribution device, e.g., the second material distribution device having a similar structure as the first material distribution device.

For example, as shown in fig. 1, the second material spreading device comprises a second material spreading body 2 and a second sweeping device, the second material spreading body 2 can contain a material which can be the same as or different from the material contained in the first material spreading body 2, for example, in a chip form or a granular form, the second material spreading body 2 has a second discharge outlet 2-1, the second discharge outlet 2-1 faces the material conveyor belt 10 to spread the material on the material conveyor belt 10.

For example, the second sweeping device is arranged at the downstream of the second discharge port 2-1 and comprises a second sweeping mechanism 4-2, a second lifting mechanism 7-2 and a second negative pressure suction box 12-2.

For example, a second sweeping mechanism 4-2 is provided on a first side (shown as the upper side in the figure) of the material conveyor belt 10 for sweeping material spread on the material conveyor belt 10. For example, the conveying direction 9 of the material conveyor belt 10 is the horizontal right direction in the figure, and the second sweeping mechanism 4-2 is arranged in the direction perpendicular to the conveying direction 9 of the material conveyor belt 10.

For example, the second lifting mechanism 7-2 is disposed on a second side (shown as a lower side in the drawing) of the material conveyer belt 10 opposite to the first side, and is configured to lift or lower the material conveyer belt 10 by regions to adjust a distance between the second sweeping mechanism 4-2 and the second lifting mechanism 7-2 by regions, that is, to adjust a distance between the second sweeping mechanism 4-2 and the material conveyer belt 10 by regions, thereby controlling a lateral volume flow rate, a thickness, a density, and the like of the material conveyed on the material conveyer belt 10.

For example, the second negative pressure suction box 12-2 is disposed at the second side of the material conveying belt 10, the second lifting mechanism 7-2 is disposed in the second negative pressure suction box 12-2, and the second negative pressure suction box 12-2 is configured to perform negative pressure adsorption on the material conveying belt 10, so that the material conveying belt 10 is always attached to the second negative pressure suction box 12-2 during transmission, so that the material conveying belt 10 always runs on a predetermined track, and it is ensured that the material conveying belt 10 does not deviate, and further, the distance between the second sweeping mechanism 4-2 and the material conveying belt 10 is a required distance, that is, the distance adjusted by the second lifting mechanism 7-2 is not deviated, thereby preventing the thickness of the material on the material conveying belt 10 from deviating, and ensuring the uniformity of the material on the material conveying belt 10.

For example, in some embodiments, the second suction box 12-2 may include a centrifugal fan configured to provide negative pressure, e.g., to place the second suction box 12-2 in a vacuum state, thereby achieving effective negative pressure suction on the material conveyor belt 10 and smooth movement of the material conveyor belt 10 on the second suction box 12-2 along a predetermined trajectory.

For example, in some embodiments, as shown in fig. 1, the second sweeping device may further include a second collecting mechanism 6-2, the second collecting mechanism 6-2 being disposed on a first side of the material conveyer belt 10, and disposed on a side of the second sweeping mechanism 4-2, such as upstream of the second sweeping mechanism 4-2, shown as the left side of the material conveyer belt 10, and configured to collect material, such as excess material swept by the second sweeping mechanism 4-2, so as to recycle the excess material. For example, the second collection means 6-2 comprises suction means or transport means configured to supply the extracted material to the second material distribution body.

For example, in some embodiments, as shown in fig. 1, the second material spreading device may further include a density measuring device 11-2, and the density measuring device 11-2 is disposed downstream of the second sweeping mechanism 4-2 and configured to be movable, for example, in a direction perpendicular to the conveying direction 9 of the material conveyor belt 10, for example, the moving direction of the density measuring device 11-2 may be the same as the extending direction of the second sweeping mechanism 4-2, so as to measure the density of the material at different positions on the material conveyor belt 10, for example, by detecting the density of the material swept by the second sweeping mechanism 4-2 through an X-ray scanning.

For example, referring to fig. 2, the second elevating mechanism 7-2 includes a piano type elevating mechanism. For example, the second elevating mechanism 7-4 includes a plurality of elevating units 7-4 arranged in a row or an array, and each of the plurality of elevating units 7-4 is configured to be independently ascendable and descendable to adjust the height of the second elevating mechanism 7-2 by regions.

The number of the lifting units 7-4 is not particularly limited in the embodiments of the present disclosure, for example, in some embodiments, the second lifting mechanism 7-2 includes at least six lifting units 7-4 to achieve a precise adjustment effect. For example, each of the plurality of lifting units 7-4 includes a displacement sensor (not shown in the drawings) configured to monitor a lifting displacement amount of the lifting unit 7-4.

For example, in some embodiments, controller C is also communicatively coupled to density measuring device 11-2 and the plurality of lifting units 7-4 and is configured to adjust the amount of lifting displacement of the plurality of lifting units 7-4 based on the measurements made by density measuring device 11-2. For example, after the second sweeping mechanism 4-2 sweeps, the density measuring device 11-2 may detect the material after sweeping, and detect whether the material is level, whether the material is in the required density, etc., and then the controller C obtains the measurement result of the density measuring device 11-2, and compares, calculates, and controls the lifting displacement amounts of the plurality of lifting units 7-4 according to the measurement result, so as to compensate the state of the material, such as whether the material is level, whether the material is in the required density, etc., in real time, so that the material after being swept again by the second sweeping mechanism 4-2 is in the required state, such as the material with the required thickness and uniform density, thereby achieving the function of dynamically adjusting the transverse density of the material in real time.

For example, in some embodiments, the second material spreading device may further include a laser ranging device (not shown), which may be disposed upstream of the second sweeping mechanism 4-2 and configured to measure the height of the material on the material conveyor belt 10, i.e., the laser ranging device may measure the height of the material before the second sweeping mechanism 4-2 sweeps and then configure the height of the second sweeping mechanism 4-2 according to the height of the material.

For example, the control unit C may be further communicatively connected to the laser distance measuring device and the second sweeping mechanism 4-2, and configured to adjust the height of the second sweeping mechanism 4-2 according to the measurement result of the laser distance measuring device, thereby controlling the thickness of the material passing through the second sweeping mechanism 4-2.

For example, referring to FIG. 2, the second sweeping mechanism 4-2 may comprise a sweeping roller 5-2, the roller surface of the sweeping roller 5-2 comprises a friction element 5-4, the friction element 5-4 comprises a needle-shaped nail, a saw tooth blade or a thin sheet, and the excessive material of the material 8 on the material conveying belt 10 beyond the rotating circumferential surface of the sweeping roller 5-2 is rejected into the second collecting mechanism 6-2 by the friction element 5-4 on the surface of the sweeping roller at a high speed for recycling. For example, the sweep roller 4-2 may be rotated at a high speed over the material, and the lower surface of the sweep roller 4-2 is rotated in a direction opposite to the conveying direction 9 of the material conveyor 10.

For example, in some embodiments, the paving machine may further comprise a third material distribution device disposed downstream of the second material distribution device, the third material distribution device comprising a third material distribution body 3, the third material distribution body 3 may contain material, e.g., the same or different material as the first and second material distribution devices, which may be in chip or granular form. The third material scattering body 3 has a third discharge port 3-1, and the third discharge port 3-1 faces the material conveyer belt 10. For example, in some embodiments, the third material spreading device may also include a third sweeping device (not shown), and the structure of the third sweeping device may refer to the first sweeping device and the second sweeping device, which will not be described herein.

For example, as shown in fig. 1, in some embodiments, the first material spreading device may further include a blower 13-1, an air duct 14-1, and a wind screen 15-1, which are used to circulate air to blow and homogenize the material in the first material spreading body 1. Similarly, the third material spreading device may also include a blower 13-2, an air duct 14-2, and a wind screen 15-2 for circulating air to blow and homogenize the material in the third material spreading body 3.

For example, in some embodiments, the first, second and third material distribution devices may be lower surface, core and top surface material distribution devices, respectively, each containing a different material for forming a different ply of the particle board, respectively.

The spreading machine provided by the embodiment of the disclosure has a dynamic transverse density adjusting function, so that the scattered materials on the material conveying belt can be adjusted into a plate blank with uniform unit area weight or density, and meanwhile, the broken materials can be saved; on the other hand, first negative pressure suction case can produce the negative pressure adsorption to the material transportation area for the at least horizontal profile curve of material transportation area can be adjusted more nimble and accurate, thereby realizes the accurate regulatory action of first scanning device to the density of material. Thus, the particle board obtained by the spreading machine provided by the embodiment of the disclosure has uniform thickness and density, so that the particle board has better physical properties.

For example, embodiments of the present disclosure also provide a method of mounting a paving machine, including: the method comprises the steps of installing a first material spreading main body and a first sweeping mechanism of a first sweeping device on a first side of a material conveying belt, and installing a first lifting mechanism and a first negative pressure suction box of the first sweeping device on a second side of the material conveying belt, wherein the first lifting mechanism is installed in the first negative pressure suction box, and the first negative pressure suction box is configured to carry out negative pressure adsorption on the material conveying belt.

For example, when installing, the first sweeping mechanism and the first lifting mechanism are correspondingly installed at two opposite sides of the material conveyer belt, namely the first side and the second side, and the extending direction of the first sweeping mechanism and the first lifting mechanism can be perpendicular to the conveying direction of the material conveyer belt.

For example, in some embodiments, the installation method may further comprise: the density measuring device is mounted on a first side of the material transport belt and downstream of the first sweeping mechanism such that the density measuring device is movable at least in a direction perpendicular to the conveying direction of the material transport belt for measuring the density of the material at different locations on the material transport belt.

For example, when installed, the density measurement device may be moved in the same direction as the first sweep mechanism and the first lift mechanism extend, so that the density measurement device can perform a "lateral" density measurement.

For example, in some embodiments, the installation method may further comprise: the first collecting mechanism is arranged on the first side of the material conveying belt and is arranged on one side of the first sweeping mechanism, for example, the upstream of the first sweeping mechanism, so as to collect the materials, for example, collect the redundant materials after sweeping by the first sweeping mechanism, and recycle the redundant materials.

For example, in some embodiments, the installation method may further comprise: the laser distance measuring device is arranged at the upstream of the first sweeping mechanism and is configured to measure the height of the materials on the material conveying belt, namely the laser distance measuring device can measure the height of the materials before the first sweeping mechanism sweeps.

For example, in some embodiments, the installation method may further comprise: the second material distribution device is installed downstream of the first material distribution device, for example, the components of the second material distribution device are installed according to the method for installing the first material distribution device, and specific reference may be made to the above description, and no further description is given here.

For example, in some embodiments, the installation method may further comprise: the third material distribution device is installed downstream of the second material distribution device so that the material can pass through the first, second and third material distribution devices in sequence on the material conveyor belt to form different plies of the particle board.

For example, the spreading machine may further be equipped with other components, such as a fan, and the like, and the installation manner of these components may refer to the related art, which is not described herein again.

The following points need to be explained:

(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.

(2) For purposes of clarity, the thickness of layers or regions in the figures used to describe embodiments of the present disclosure are exaggerated or reduced, i.e., the figures are not drawn on a true scale.

(3) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be determined by the scope of the claims.

Claims

1. A paving machine comprising a first material spreading device, wherein the first material spreading device comprises:

a first material spreading body having a first discharge port; and

first levelling means, set up in the low reaches of first discharge gate includes:

the first sweeping mechanism is arranged on the first side of the material conveying belt;

a first lifting mechanism disposed at a second side of the material transport belt opposite to the first side and configured to lift or lower the material transport belt by regions to adjust a distance between the first sweeping mechanism and the first lifting mechanism by regions; and

a first negative pressure suction box disposed on the second side, wherein the first lifting mechanism is disposed within the first negative pressure suction box, and the first negative pressure suction box is configured to perform negative pressure suction on the material transport belt.

2. The paving machine of claim 1, wherein the first sweeping device further comprises:

the first collecting mechanism is arranged on the first side, arranged on one side of the first sweeping mechanism and configured to collect materials.

3. The paving machine of claim 1, wherein the first material spreading device further comprises:

a density measuring device disposed downstream of the first sweeping mechanism and configured to be movable to measure densities of the material at different locations on the material transport belt.

4. The paving machine as claimed in claim 3, wherein the first lifting mechanism comprises a plurality of lifting units arranged in a row or an array, each of the plurality of lifting units being configured to be independently liftable.

5. The paver of any of claims 1-4 wherein the first lift mechanism comprises a piano-type lift mechanism.

6. The paving machine as claimed in claim 4, wherein each of the plurality of lifting units comprises a displacement sensor configured to monitor an amount of lifting displacement of the lifting unit.

7. The paving machine of claim 4, further comprising a controller, wherein the controller is communicatively coupled to the density measuring device and the plurality of lifting units and configured to adjust the amount of lifting displacement of the plurality of lifting units based on the measurements of the density measuring device.

8. The paving machine of claim 7, wherein the first material spreading device further comprises:

a laser ranging device disposed upstream of the first sweeping mechanism configured to measure a height of the material on the material transport belt.

9. The paving machine of claim 8, wherein the control unit is further communicatively coupled to the laser ranging device and the first sweeping mechanism and configured to adjust the height of the first sweeping mechanism based on measurements from the laser ranging device.

10. The paving machine as claimed in any one of claims 1 to 4, wherein said first sweeping mechanism comprises a sweeping roller, the roller surface of said sweeping roller comprising friction elements comprising needle-like spikes, saw-tooth blades or lamellae.

11. The paving machine as claimed in any one of claims 1 to 4, wherein said first negative pressure suction box comprises a centrifugal fan configured to provide negative pressure.

12. The paving machine as claimed in claim 2, wherein the first collection mechanism comprises a suction device or a transport device configured to provide the captured material to the first material spreading body.

13. The paving machine as claimed in any one of claims 1-4, further comprising a second material spreading device disposed downstream of said first material spreading device, wherein said second material spreading device comprises:

a second material scattering body having a second discharge port; and

the second sweeps the flat device, sets up in the low reaches of second discharge gate includes:

the second sweeping mechanism is arranged on the first side of the material conveying belt;

a second lifting mechanism disposed at a second side of the material transport belt and configured to lift or lower the material transport belt by regions to adjust a distance between the second sweeping mechanism and the second lifting mechanism by regions; and

a second negative pressure suction box disposed on the second side, wherein the second lifting mechanism is disposed within the second negative pressure suction box, and the second negative pressure suction box is configured to perform negative pressure suction on the material transport belt.

14. The paving machine of claim 13, further comprising a third material spreading device disposed downstream of the second material spreading device, wherein the third material spreading device includes a third material spreading body having a third discharge outlet.

15. A method of installing the paver of claim 1 comprising:

mounting the first material spreading body and the first levelling means of the first levelling device on a first side of the material conveyor belt, an

Mounting the first lifting mechanism and the first negative pressure suction box of the first sweeping device on the second side of the material conveying belt,

wherein the first lifting mechanism is mounted within the first negative pressure suction box configured to negative pressure adsorb the material transport belt.

16. The installation method of claim 15, further comprising:

a density measuring device is mounted on a first side of the material transport belt and downstream of the first sweeping mechanism such that the density measuring device is movable at least in a direction perpendicular to the transport direction of the material transport belt to measure the density of material at different locations on the material transport belt.