OSB (oriented strand board) base material fine exterior and interior facing composite production process

Abstract

The invention provides an OSB (oriented strand board) base material fine surface and inner surface veneer composite production process which uses poplar, pine and small-diameter wood as raw materials and comprises the following steps: S1, peeling; s2, large wood shaving; s3, chipping is conducted; s4, small wood shaving; s5, drying; s6, screening is carried out; s7, primary sizing; s8, paving for the first time; s9, primary hot pressing; s10, cooling for the first time; s11, carrying out primary post-treatment; s12, carrying out primary maintenance; s13, primary sanding is conducted; s14, primary grading; s15, secondary upper and lower surface fine material sizing; s16, gluing the OSB base material, and carrying out secondary combined pavement; s17, carrying out secondary hot pressing; s18, cooling for the second time; and S19, secondary post-treatment is carried out. S20, carrying out secondary curing; s21, secondary sanding is carried out; and S22, carrying out secondary grading. According to the OSB base material fine surface and inner facing composite production process, the basic requirement for processing an OSB composite board can be met, the whole surface of the board can be rapidly and fully cooled, and therefore the cooling efficiency of the board is improved, and the overall processing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of particleboard production, and particularly relates to a composite production process for fine surface and inner surface finishing of an OSB substrate. Background Art

[0002] In the process of producing particleboard, the board needs to go through multiple processes such as peeling, flaking, drying, and hot pressing.

[0003] Although the existing OSB substrate fine surface and inner and outer surface composite production process can meet the basic needs of particleboard production, when the slab is cooled, the lower surface of the board is usually in contact with the placement structure, and the cooling effect of the cooling structure can only directly cover the upper surface, left, right surface, front surface and rear surface of the slab, and cannot achieve direct coverage of the six surfaces. Therefore, it is easy to cause the lower surface of the board close to the placement structure to be unable to be directly cooled because it is far away from the cooling structure. The heat of the corresponding part needs to penetrate from bottom to top to the bottom of the board. Cooling the lower surface of the board by heat transfer will result in low overall cooling efficiency of the board, and will also affect the overall efficiency of composite processing of the board, and cannot fully meet people's use needs. Summary of the invention

[0004] In view of this, the present invention aims at the deficiencies of the prior art and provides a composite production process for fine surface and inner and outer facings of an OSB substrate, which can not only meet the basic needs of processing particleboard, but also can quickly and fully cool the entire surface of the particleboard, thereby improving the cooling efficiency of the particleboard, and further improving the overall efficiency of processing the particleboard, thereby better meeting people's usage needs.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a composite production process of fine surface and inner surface of OSB substrate, the raw materials used are: poplar, pine and small diameter wood, including the following steps:

[0006] S1, peeling, peeling poplar and pine with a diameter of more than 80 mm, removing more than 90% of the bark to make standard wood;

[0007] S2, large wood shavings, peeling the standard wood in step S1 to peel large wood shavings with a length of 120 mm to 140 mm, a width of 10 mm to 40 mm, and a thickness of 0.6 mm;

[0008] S3, chipping, chipping the logs when the moisture content is above 40%, screening the wood chips, and selecting the wood chips with a length of 20 mm to 40 mm;

[0009] S4, small shavings, the wood chips screened in step S3 are shavings to produce small shavings of wood with a length of 5-40 mm, a width of 1-20 mm and a thickness of 0.6 mm;

[0010] S5, drying, conveying the large wood shavings and the small wood shavings to a dryer for drying, the drying time of the small wood shavings is 2-5 minutes, the drying time of the large wood shavings is 9-15 minutes, and the moisture content of the large wood shavings and the small wood shavings after drying is about 3%;

[0011] S6, screening, screening the dried large wood shavings and small wood shavings to separate the large wood shavings and small wood shavings;

[0012] S7, initial gluing, mixing the selected large-particle wood and small-particle wood with glue respectively;

[0013] S8, initial paving, paving the lower surface material, core layer material and upper surface material according to the paving structure of vertical and horizontal cross-directional paving to form a slab, the upper surface material and the lower surface material are both large-particle wood, and the core layer material is small-particle wood;

[0014] S9, initial hot pressing, transporting the slab to a hot press for hot pressing;

[0015] S10, initial cooling, the temperature of the slab discharged from the hot press is about 160°C, and it is cooled by a suspended cooling device;

[0016] S11, the first post-processing, trimming the slab after cooling, then automatically stacking and marking;

[0017] S12, initial curing, transfer the marked slabs to the curing area and keep them neatly and flat for at least 24 hours;

[0018] S13, initial sanding, sanding the cured slab to a certain thickness;

[0019] S14, initial grading, inspecting and grading the well-sanded OSB substrate to separate superior products, qualified products and unqualified products;

[0020] S15, secondary gluing of upper and lower surface fine materials, the OSB composite board structure is divided into a lower surface layer, a core layer and an upper surface layer, the upper and lower surface layers are fine materials, the core layer is an OSB substrate, and the lower surface layer fine material gluing and the upper surface layer fine material gluing are processed;

[0021] S16, gluing the OSB substrate, and performing secondary combined paving. The OSB substrate classified as superior and qualified is gluing, and then the lower surface fine material is laid first, and then the gluing OSB substrate is placed on the lower surface fine material, and then the upper surface fine material is laid on the OSB substrate to make an OSB composite board, and the secondary combined paving is completed;

[0022] S17, secondary hot pressing, sending the OSB composite board to a hot press for hot pressing treatment;

[0023] S18, secondary cooling, using a suspended cooling device to cool the hot-pressed OSB composite board;

[0024] S19, secondary post-processing, marking the cooled OSB composite board and then stacking it;

[0025] S20, secondary curing, transfer the marked OSB composite panels to the curing area and keep them neatly and flat for at least 24 hours;

[0026] S21, secondary sanding, the cured OSB composite board is sanded to a certain thickness. The thickness of the finished product after sanding is 6-40mm. In order to ensure product quality, the thickness deviation is within 0.05mm;

[0027] S22, secondary grading, inspects and grades the sanded OSB composite panels into superior products, qualified products and unqualified products.

[0028] As a further improvement of the present invention, in step S1, a double-tooth debarking machine is used to debark the poplar and pine wood;

[0029] In step S2, the standard wood is peeled by using a long wood chipper;

[0030] In step S4, the screened wood chips are flaked using a ring flaker;

[0031] In step S7, a glue mixing process is performed using a glue drum mixer.

[0032] As a further improvement of the present invention, in step S5, the inlet temperature of the dryer is 600°C, the outlet temperature is 120-130°C, the dryer speed is 18.5 rpm, and the temperature, wind speed, air volume, and dryer speed are adjusted according to the designed production capacity; the dryer is 28-30 meters long and 5.8-6.0 meters in diameter, and is made of 12 mm thick carbon steel. The inner surface structure is welded with Z-shaped carbon heat conductive plates and is driven by three sets of drive rollers.

[0033] As a further improvement of the present invention, in step S7, the drum glue mixer is equipped with 11 high-speed atomizers at 10,000 revolutions per minute to add glue, process water, waterproofing agent and curing agent additives.

[0034] As a further improvement of the present invention, in step S9 and step S17, five hot pressing zones are arranged in the hot pressing machine, the temperature of the first hot pressing zone is 230°C, which belongs to the high pressure zone, the temperature of the second hot pressing zone is 210°C, which belongs to the increased holding pressure zone, the temperature of the third hot pressing zone is 190°C, which belongs to the medium holding pressure zone, the temperature of the fourth hot pressing zone is 180°C, which belongs to the holding pressure and constant thickness zone, and the temperature of the fifth hot pressing zone is 170°C, which belongs to the low holding pressure zone; according to the hot pressing requirements, the slab and the OSB composite board are hot pressed by the corresponding hot pressing zones of the hot press.

[0035] As a further improvement of the present invention, the suspended cooling device in step S10 includes a cooling bin, a supporting module is provided at the bottom of the cooling bin, an inlet and outlet are opened at the rear end of the cooling bin, an annular guide rail pair is provided inside the bottom of the cooling bin along the front-to-back direction, and placement screen grooves for vertically placing slabs and OSB composite panels are respectively provided on multiple slide seats of the annular guide rail pair through support rods, a cooling cavity is provided inside the side walls of the left and right side ends, the rear side end and the top end of the cooling bin, a plurality of blowing holes connected to the cooling cavity are provided on the inner wall of the cooling bin, a cold air inlet pipe connected to the cooling cavity is provided on the outer bottom wall of the cooling bin, and the placement screen grooves on the front and rear sides are staggered with each other.

[0036] As a further improvement of the present invention, a turning module for turning the plate is also provided on the cooling bin; the turning module includes a cylinder vertically arranged on the rear end top wall of the cooling bin and the output shaft extending to the interior of the cooling bin, the lower end of the output shaft of the cylinder is provided with a U-shaped mounting frame that can be sleeved on the front and rear sides of the slab and the OSB composite board, the mounting frame is provided with a guide plug rod 1 vertically slidably connected to the top of the cooling bin, the front and rear ends of the mounting frame are respectively provided with telescopic push rods whose output shafts extend to the inner side of the mounting frame, mounting plates are respectively provided on the output shafts of the two telescopic push rods, and guide plug rods 2 transversely slidably connected to the side ends of the mounting frame are respectively provided on the two mounting plates, one mounting plate is rotatably provided with a pressure rod, the pressure rod is provided with a fixed splint 1, the other mounting plate is provided with an adjusting motor, and a fixed splint 2 is provided on the output shaft of the adjusting motor, and the height of the slab and the OSB composite board is greater than twice the depth of the screen slot.

[0037] As a further improvement of the present invention, an anti-skid pad 1 is arranged on the inner side wall of the first fixed splint, and an anti-skid pad 2 is arranged on the inner side wall of the second fixed splint.

[0038] As a further improvement of the present invention, the support module includes a plurality of support tubes arranged at the bottom of the cooling bin, support plates are respectively vertically inserted in the plurality of support tubes, support pads are respectively arranged at the bottom of the plurality of support plates, connecting bolts for screwing and fixing the corresponding support plates are conveniently arranged on the plurality of support tubes, a plurality of threaded connection holes matched with the corresponding connecting bolts are respectively arranged on the plurality of support plates, the plurality of threaded connection holes on the connecting plates are vertically distributed, a hydraulic cylinder is also arranged at the bottom of the cooling bin, a support pad is arranged at the bottom of the hydraulic cylinder, and connecting rods are also arranged between adjacent support plates.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] First, the raw material processing is refined. By pre-treating poplar and pine wood by peeling, peeling, chipping, etc., the consistency of raw material quality is ensured, which is conducive to the stability and uniformity of the products in subsequent processes.

[0041] Secondly, the efficient and energy-saving drying process uses a dryer under specific parameter control to quickly and effectively dry wood of different specifications, which not only ensures that the moisture content of the final product meets the standard, but also improves production efficiency and reduces energy consumption.

[0042] Thirdly, laying the upper and lower surface layers and the core layer materials in a cross-directional manner enhances the overall strength and flatness of the board, giving the finished product better physical and mechanical properties.

[0043] Fourthly, by setting up a hot press with multiple different temperature zones to complete the required pressing work, the internal stress distribution of the board can be better controlled to avoid product quality problems caused by sudden temperature changes.

[0044] Fifthly, a cooling chamber is provided inside the side walls of the left and right side ends, the rear side end and the top end of the cooling bin, and a plurality of blowing holes connected with the cooling chamber are provided on the inner wall. Cold air is blown evenly toward the slabs and OSB composite boards through these holes, ensuring that all parts of the slabs and OSB composite boards can be effectively cooled; the placement screen slots on the front and rear sides are staggered with each other, which can avoid the placement screen slots on one side and the slabs and OSB composite boards therein blocking the cold air blowing toward the boards on the other side, thereby avoiding affecting the cooling process of the slabs and OSB composite boards on the other side; the placement screen slots are supported by support rods, so that the slabs and OSB composite boards can be suspended, so that the cold air can directly cool the lower surfaces of the slabs and OSB composite boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] Figure 1 is a process flow chart of the present invention;

[0047] Figure 2 It is a structural schematic diagram of the suspended cooling device of the present invention;

[0048] Figure 3 It is a structural schematic diagram of the annular guide rail pair, the slide seat and the screen slot of the present invention;

[0049] Figure 4 It is a schematic structural diagram of the slide seat, the screen slot and the support rod of the present invention;

[0050] Figure 5 It is a structural schematic diagram of the annular guide rail pair and the slide seat of the present invention;

[0051] Figure 6 It is a structural schematic diagram of the material turning module of the present invention;

[0052] Figure 7 It is a schematic diagram of the support plate, support pad, threaded connection hole and connecting rod structure of the present invention.

[0053] In the figure: 101, cooling chamber; 102, inlet and outlet; 103, annular guide pair; 104, slide seat; 105, screen slot; 106, support rod; 107, blowing hole; 108, cold air inlet pipe; 201, cylinder; 202, mounting frame; 203, telescopic push rod; 204, mounting plate; 205, fixed splint one; 206, fixed splint two; 207, anti-skid pad one; 208, anti-skid pad two; 209, guide plug rod one; 210, guide plug rod two; 211, pressure rod; 212, bearing; 213, adjusting motor; 301, support tube; 302, support plate; 303, support pad; 304, connecting bolt; 305, threaded connection hole; 306, hydraulic cylinder; 307, support pad; 308, connecting rod. DETAILED DESCRIPTION

[0054] In order to better understand the present invention, the content of the present invention is further clearly set forth in conjunction with the embodiments below, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0055] like Figure 1 As shown, a composite production process of fine surface and inner surface of OSB substrate, using raw materials: poplar, pine and small-diameter wood, includes the following steps:

[0056] S1, peeling, peeling poplar and pine with a diameter of more than 80 mm, removing more than 90% of the bark to make standard wood;

[0057] S2, large wood shavings, peeling the standard wood in step S1 to peel large wood shavings with a length of 120 mm to 140 mm, a width of 10 mm to 40 mm, and a thickness of 0.6 mm;

[0058] S3, chipping, chipping the logs when the moisture content is above 40%, screening the wood chips, and selecting the wood chips with a length of 20 mm to 40 mm;

[0059] S4, small shavings, the wood chips screened in step S3 are shavings to produce small shavings of wood with a length of 5-40 mm, a width of 1-20 mm and a thickness of 0.6 mm;

[0060] S5, drying, conveying the large wood shavings and the small wood shavings to a dryer for drying, the drying time of the small wood shavings is 2-5 minutes, the drying time of the large wood shavings is 9-15 minutes, and the moisture content of the large wood shavings and the small wood shavings after drying is about 3%;

[0061] S6, screening, screening the dried large wood shavings and small wood shavings to separate the large wood shavings and small wood shavings;

[0062] S7, initial gluing, mixing the selected large-particle wood and small-particle wood with glue respectively;

[0063] S8, initial paving, paving the lower surface material, core layer material and upper surface material according to the paving structure of vertical and horizontal cross-directional paving to form a slab, the upper surface material and the lower surface material are both large-particle wood, and the core layer material is small-particle wood;

[0064] S9, initial hot pressing, transporting the slab to a hot press for hot pressing;

[0065] S10, initial cooling, the temperature of the slab discharged from the hot press is about 160°C, and it is cooled by a suspended cooling device;

[0066] S11, the first post-processing, trimming the slab after cooling, then automatically stacking and marking;

[0067] S12, initial curing, transfer the marked slabs to the curing area and keep them neatly and flat for at least 24 hours;

[0068] S13, initial sanding, sanding the cured slab to a certain thickness;

[0069] S14, initial grading, inspecting and grading the well-sanded OSB substrate to separate superior products, qualified products and unqualified products;

[0070] S15, secondary gluing of upper and lower surface fine materials, the OSB composite board structure is divided into a lower surface layer, a core layer and an upper surface layer, the upper and lower surface layers are fine materials, the core layer is an OSB substrate, and the lower surface layer fine material gluing and the upper surface layer fine material gluing are processed;

[0071] S16, gluing the OSB substrate, and performing secondary combined paving. The OSB substrate classified as superior and qualified is gluing, and then the lower surface fine material is laid first, and then the gluing OSB substrate is placed on the lower surface fine material, and then the upper surface fine material is laid on the OSB substrate to make an OSB composite board, and the secondary combined paving is completed;

[0072] S17, secondary hot pressing, sending the OSB composite board to a hot press for hot pressing treatment;

[0073] S18, secondary cooling, using a suspended cooling device to cool the hot-pressed OSB composite board;

[0074] S19, secondary post-processing, marking the cooled OSB composite board and then stacking it;

[0075] S20, secondary curing, transfer the marked OSB composite panels to the curing area and keep them neatly and flat for at least 24 hours;

[0076] S21, secondary sanding, the cured OSB composite board is sanded to a certain thickness. The thickness of the finished product after sanding is 6-40mm. In order to ensure product quality, the thickness deviation is within 0.05mm;

[0077] S22, secondary grading, inspects and grades the sanded OSB composite panels into superior products, qualified products and unqualified products.

[0078] According to the above steps, the composite production of particle board can be realized.

[0079] According to another embodiment of the present invention, Figure 2 , 3 As shown in , 4, the suspended cooling device includes a cooling bin 101 with a support module at the bottom, an inlet and outlet 102 at the rear end, an annular guide rail pair 103 arranged inside the bottom along the front-to-back direction, a placement screen slot 105 for vertically placing the slab arranged on the slide seat 104 through a support rod 106, a cooling cavity is arranged inside the side walls of the left and right side ends, the rear side end and the top end of the cooling bin 101, a plurality of blowing holes 107 connected to the cooling cavity are arranged on the inner side wall, and a cold air inlet pipe 108 is arranged on the outer bottom wall. The placement screen slots 105 on the front and rear sides are arranged staggered with each other.

[0080] like Figure 2 , 7As shown, the support module includes a plurality of support cylinders 301, each support cylinder 301 is plugged with a support plate 302, and a support pad 303 is provided at the bottom of the support plate 302. The support cylinder 301 is provided with a connecting bolt 304 for fixing the support plate 302, and the support plate 302 has a plurality of vertically distributed threaded connection holes 305. A hydraulic cylinder 306 is also provided at the bottom of the cooling chamber 101, and a support pad 303 is provided at the bottom of the hydraulic cylinder 306, and a connecting rod 308 is provided between adjacent support plates 302.

[0081] When the slab after hot pressing needs to be cooled, the slab is placed in the vacant placement screen slot 105 through the inlet and outlet 102, and the multiple placement screen slots 105 and the slab are driven by the annular guide rail pair 103 to rotate and slide in a counterclockwise manner. At the same time, cold air is introduced into the cooling chamber through the cold air inlet pipe 108. After the cold air is redistributed in the blowing chamber, it will be blown out from the multiple blowing holes 107 and blow to the six sides of the multiple slabs from multiple angles and directions. The cold air will carry the heat on the slab and flow inside the cooling chamber 101 and leave the cooling chamber 101 through the inlet and outlet 102, thereby cooling the slab. Since the placement screen slot 105 is set on the slide seat 104 of the annular guide rail pair 103 through a support rod, it can avoid the lower surface of the slab from being in direct contact with the placement structure, and effectively avoid hindering the upward blowing process of the cooling air.

[0082] The user can also flexibly and conveniently adjust the height of the cooling bin 101 through the support module to better meet people's usage needs. The method for adjusting the support height of the cooling bin 101 is as follows: first, the output shaft of the hydraulic cylinder 306 is extended downward by a certain length, so that the cooling bin 101 is lifted to a certain height, and the support pad 303 is lifted off the ground to a certain height, and then the screw connection between the connecting bolt 304 and the threaded connecting hole 305 can be released, and the fixation of the connection between the support tube 301 and the support plate 302 can be released, and then the support plate 302 can be adjusted on the support The expansion and contraction amount in the support tube 301 is adjusted, and the connecting bolt 304 is screwed and fixed to the corresponding threaded connection hole 305 again, so as to fix the connection between the support tube 301 and the support plate 302, and then the output shaft of the hydraulic cylinder 306 can be shortened by a certain length, so that the bottom of the support pad 303 can be in contact with the ground again, so that the height of the cooling bin 101 can be conveniently adjusted; and the vertical height of multiple support plates 302 can be conveniently adjusted synchronously through the connecting rod 308, so as to improve the efficiency of height adjustment of the cooling bin 101. The cooling method for the OSB composite board is the same as the cooling method for the slab.

[0083] According to another embodiment of the present invention, Figure 2 , 6As shown, the cooling bin 101 is also provided with a turning module for turning the plate; the turning module includes a cylinder 201 vertically arranged on the rear end top wall of the cooling bin 101 and the output shaft extending to the interior of the cooling bin 101, and the lower end of the output shaft of the cylinder 201 is provided with a U-shaped mounting frame 202 that can be sleeved on the front and rear sides of the slab and the OSB composite board, and the mounting frame 202 is provided with a guide rod 209 vertically slidably connected to the top of the cooling bin 101, and the front and rear ends of the mounting frame 202 are respectively provided with output shaft extensions. The telescopic push rods 203 extending to the inner side of the mounting frame 202, the output shafts of the two telescopic push rods 203 are respectively provided with mounting plates 204, the two mounting plates 204 are respectively provided with guide plug rods 210 which are laterally slidably connected to the side ends of the mounting frame 202, one mounting plate 204 is rotatably provided with a pressure rod 211 through a bearing 212, the pressure rod 211 is provided with a fixed clamping plate 1 205, and the other mounting plate 204 is provided with an adjustment motor 213, and a fixed clamping plate 206 is provided on the output shaft of the adjustment motor 213. The guide plug rod 1 209 can make the mounting frame 202 move and adjust smoothly, and keep it stable after the adjustment is completed, and prevent the cylinder 201 from being easily deformed and damaged; the guide plug rod 210 can make the mounting plate 204 move and adjust smoothly, and keep it stable after the adjustment is completed, and prevent the telescopic push rod 203 from being easily deformed and damaged.

[0084] When the slab runs to the rear end of the cooling bin 101, the annular guide rail pair 103 can be suspended, so that the slab is suspended, and then the mounting frame 202 is driven by the cylinder 201 to be set downward on the front and rear sides of the slab, and the fixed clamping plate 1 205 and the fixed clamping plate 206 are located on the front and rear sides of the slab, and then the fixed clamping plate 1 205 and the fixed clamping plate 206 are driven by two telescopic push rods 203 to clamp the slab, and then the slab is driven by the cylinder 201 to move to the top of the screen slot 105, and then the adjusting motor 213 is started to drive the fixed clamping plate 206, the slab and the fixed clamping plate Plate 1 205 rotates to realize the rotation adjustment of the slab, and then the slab is driven by the cylinder 201 to be inserted back into the placement screen slot 105, and then the telescopic push rods 203 on both sides drive the fixed clamping plate 1 205 and the fixed clamping plate 2 206 to retreat and reset, releasing the clamping of the slab, and then the mounting frame 202 is driven by the cylinder 201 to reset upward, thereby completing the flipping adjustment of one slab; then the annular guide rail pair 103 continues to operate, continues to transport and cool down multiple placement screen slots 105 and slabs, and flips and adjusts multiple slabs in turn according to the above method.

[0085] By flipping and adjusting the slab, the portion of the slab where the screen slot 105 is placed can be switched to the outside of the screen slot 105, so that the slab can be fully cooled during the second half of the conveying and cooling process, eliminating the existence of a cooling blind spot, and avoiding the inability to directly and fully cool the slab due to the obstruction of the screen slot 105, thereby completely cooling the slab. When cooling the OSB composite board, the OSB composite board can also be flipped in the above manner, thereby improving the cooling effect and efficiency of the OSB composite board.

[0086] According to another embodiment of the present invention, Figure 6 As shown, an anti-skid pad 1 207 is provided on the inner side wall of the fixing clamping plate 1 205, and an anti-skid pad 208 is provided on the inner side wall of the fixing clamping plate 2 206. The anti-skid pad 1 207 and the anti-skid pad 208 can enhance the clamping firmness of the slab and the OSB composite board.

[0087] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A composite production process for fine surface and inner surface of OSB substrate, using raw materials: poplar, pine and small-diameter wood, characterized in that: The steps include: S1, peeling, peeling poplar and pine with a diameter of more than 80 mm, removing more than 90% of the bark to make standard wood; S2, large wood shavings, peeling the standard wood in step S1 to peel large wood shavings with a length of 120 mm to 140 mm, a width of 10 mm to 40 mm, and a thickness of 0.6 mm; S3, chipping, chipping the logs when the moisture content is above 40%, screening the wood chips, and selecting the wood chips with a length of 20 mm to 40 mm; S4, small shavings, the wood chips screened in step S3 are shavings to produce small shavings of wood with a length of 5-40 mm, a width of 1-20 mm and a thickness of 0.6 mm; S5, drying, conveying the large wood shavings and the small wood shavings to a dryer for drying, the drying time of the small wood shavings is 2-5 minutes, the drying time of the large wood shavings is 9-15 minutes, and the moisture content of the large wood shavings and the small wood shavings after drying is about 3%; S6, screening, screening the dried large wood shavings and small wood shavings to separate the large wood shavings and small wood shavings; S7, initial gluing, mixing the selected large-particle wood and small-particle wood with glue respectively; S8, initial paving, paving the lower surface material, core layer material and upper surface material according to the paving structure of vertical and horizontal cross-directional paving to form a slab, the upper surface material and the lower surface material are both large-particle wood, and the core layer material is small-particle wood; S9, initial hot pressing, transporting the slab to a hot press for hot pressing; S10, initial cooling, the temperature of the slab discharged from the hot press is about 160°C, and it is cooled by a suspended cooling device; S11, the first post-processing, trimming the slab after cooling, then automatically stacking and marking; S12, initial curing, transfer the marked slabs to the curing area and keep them neatly and flat for at least 24 hours; S13, initial sanding, sanding the cured slab to a certain thickness; S14, initial grading, inspecting and grading the well-sanded OSB substrate to separate superior products, qualified products and unqualified products; S15, secondary gluing of upper and lower surface fine materials, the OSB composite board structure is divided into a lower surface layer, a core layer and an upper surface layer, the upper and lower surface layers are fine materials, the core layer is an OSB substrate, and the lower surface layer fine material gluing and the upper surface layer fine material gluing are processed; S16, gluing the OSB substrate, and performing secondary combined paving. The OSB substrate classified as superior and qualified is gluing, and then the lower surface fine material is laid first, and then the gluing OSB substrate is placed on the lower surface fine material, and then the upper surface fine material is laid on the OSB substrate to make an OSB composite board, and the secondary combined paving is completed; S17, secondary hot pressing, sending the OSB composite board to a hot press for hot pressing treatment; S18, secondary cooling, using a suspended cooling device to cool the hot-pressed OSB composite board; S19, secondary post-processing, marking the cooled OSB composite board and then stacking it; S20, secondary curing, transfer the marked OSB composite panels to the curing area and keep them neatly and flat for at least 24 hours; S21, secondary sanding, the cured OSB composite board is sanded to a certain thickness. The thickness of the finished product after sanding is 6-40mm. In order to ensure product quality, the thickness deviation is within 0.05mm; S22, secondary grading, inspects and grades the sanded OSB composite panels into superior products, qualified products and unqualified products.

2. The OSB substrate fine surface and inner surface composite production process according to claim 1, characterized in that: In step S1, a double-tooth debarking machine is used to debark poplar and pine wood; In step S2, the standard wood is peeled by using a long wood chipper; In step S4, the screened wood chips are flaked using a ring flaker; In step S7, a glue mixing process is performed using a glue drum mixer.

3. The OSB substrate fine surface and inner surface composite production process according to claim 1, characterized in that: In step S5, the inlet temperature of the dryer is 600°C, the outlet temperature is 120-130°C, the dryer speed is 18.5 rpm, and the temperature, wind speed, air volume, and dryer speed are adjusted according to the designed production capacity; the dryer is 28-30 meters long and 5.8-6.0 meters in diameter. It is made of 12mm thick carbon steel, the inner surface structure is welded with Z-shaped carbon heat conductive plates, and is driven by three sets of drive rollers.

4. The OSB substrate fine surface and inner surface composite production process according to claim 2, characterized in that: In step S7, the drum glue mixer is equipped with 11 high-speed atomizers at 10,000 rpm to add glue, process water, waterproofing agent and curing agent additives.

5. The OSB substrate fine surface and inner surface composite production process according to claim 1, characterized in that: In step S9 and step S17, five hot pressing zones are arranged in the hot pressing machine, the temperature of the first hot pressing zone is 230°C, which belongs to the high pressure zone, the temperature of the second hot pressing zone is 210°C, which belongs to the increased holding pressure zone, the temperature of the third hot pressing zone is 190°C, which belongs to the medium holding pressure zone, the temperature of the fourth hot pressing zone is 180°C, which belongs to the holding pressure and constant thickness zone, and the temperature of the fifth hot pressing zone is 170°C, which belongs to the low holding pressure zone; according to the hot pressing requirements, the slab and the OSB composite board are hot pressed by the corresponding hot pressing zones of the hot press.

6. The OSB substrate fine surface and inner surface composite production process according to claim 1, characterized in that: The suspended cooling device in step S10 and step S18 comprises a cooling chamber (101), a support module is arranged at the bottom of the cooling chamber (101), an inlet and outlet (102) is provided at the rear end of the cooling chamber (101), an annular guide pair (103) is arranged inside the bottom of the cooling chamber (101) along the front-rear direction, and a plurality of slide seats (104) of the annular guide pair (103) are respectively provided with a plurality of support rods (106) for adjusting the slab and OSB composite boards are placed vertically in the placement sieve slots (105), the left and right side ends, the rear side end and the top side walls of the cooling bin (101) are provided with cooling chambers, the inner side wall of the cooling bin (101) is provided with a plurality of blowing holes (107) connected to the cooling chamber, the outer bottom wall of the cooling bin (101) is provided with a cold air inlet pipe (108) connected to the cooling chamber, and the placement sieve slots (105) on the front and rear sides are staggered with each other.

7. The OSB substrate fine surface and inner surface composite production process according to claim 6, characterized in that: The cooling bin (101) is also provided with a turning module for turning over the plates.

8. The OSB substrate fine surface and inner surface composite production process according to claim 7, characterized in that: The material turning module comprises a cylinder (201) vertically arranged on the top wall of the rear end of the cooling bin (101) and the output shaft of which extends into the interior of the cooling bin (101); a U-shaped mounting frame (202) capable of being sleeved on the front and rear sides of the slab and the OSB composite board is arranged at the lower end of the output shaft of the cylinder (201); a guide plug rod (209) vertically slidably connected to the top of the cooling bin (101) is arranged on the mounting frame (202); telescopic push rods (203) of which the output shaft extends into the inner side of the mounting frame (202) are respectively arranged at the front and rear ends of the mounting frame (202); the two telescopic push rods (203) are arranged The output shafts are respectively provided with mounting plates (204), and the two mounting plates (204) are respectively provided with two guide rods (210) which are laterally slidably connected to the side ends of the mounting frame (202). One mounting plate (204) is rotatably provided with a pressure rod (211) through a bearing (212), and a fixing clamp plate (205) is provided on the pressure rod (211). The other mounting plate (204) is provided with an adjusting motor (213), and a fixing clamp plate (206) is provided on the output shaft of the adjusting motor (213). The height of the slab and the OSB composite board is greater than twice the depth of the sieve slot (105).

9. The OSB substrate fine surface and inner surface composite production process according to claim 8, characterized in that: The inner side wall of the fixed clamp plate 1 (205) is provided with an anti-skid pad 1 (207), and the inner side wall of the fixed clamp plate 2 (206) is provided with an anti-skid pad 2 (208).

10. The OSB substrate fine surface and inner surface composite production process according to claim 9, characterized in that: The support module comprises a plurality of support tubes (301) arranged at the bottom of the cooling bin (101), support plates (302) are respectively arranged vertically in the plurality of support tubes (301), support pads (303) are respectively arranged at the bottom of the plurality of support plates (302), connecting bolts (304) for screwing and fixing the corresponding support plates (302) are conveniently arranged on the plurality of support tubes (301), a plurality of threaded connection holes (305) matched with the corresponding connection bolts (304) are respectively arranged on the plurality of support plates (302), the plurality of threaded connection holes (305) on the connection plates are vertically distributed, a hydraulic cylinder (306) is also arranged at the bottom of the cooling bin (101), a support pad (307) is arranged at the bottom of the hydraulic cylinder (306), and a connecting rod (308) is also arranged between adjacent support plates (302).

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