Production equipment and process of formaldehyde-free light high-strength fine-surface fir oriented strand board

Abstract

The application discloses a kind of formaldehyde-free light high-strength fine surface Chinese fir directional shaving board production equipment and process, including support table, the support table is equipped with multiple groups of directional roller, the directional roller is rotatably connected with the inner wall of the support table, the side of the directional roller is equipped with conveying belt;The side of the support table is equipped with pre-orientation mechanism, the pre-orientation mechanism includes fixed frame, the fixed frame is located at the side of the support table, the control frame is slidably arranged in the fixed frame, before directional paving to shaving piece, pre-orientation mechanism is used to pre-orient shaving piece, so that the direction of the surface layer and core layer of shaving piece is more easily controlled, the strength of the multi-layer structure directional shaving board formed by the perpendicular interlaced of directional surface layer shaving and directional core layer shaving is more easily reached the specified requirement.

Description

Technical Field

[0001] The invention belongs to the technical field, and in particular relates to a production device and process for a formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board. Background Art

[0002] Particleboard, also known as particle board, is a type of man-made board made by cutting various branches, small-diameter wood, fast-growing wood, and sawdust into chips of a specific size. These chips are then dried, mixed with glue, hardener, and waterproofing agents, and pressed under a certain temperature and pressure. Fir coreboard is a board made from fir wood shavings. Its characteristics are its light weight, clear texture, good toughness, and resistance to deformation. Furthermore, fir coreboard has a smooth surface, is wear-resistant, moisture-resistant, and resistant to rot, resulting in a long service life.

[0003] Traditional fir oriented strand board relies on orientation rollers to orient the particles, but the degree of orientation is limited and uncontrollable. Many particles in the resulting slabs are not arranged in the ideal direction, which seriously affects the strength of the particle board. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, the present invention aims to provide a production device and process for formaldehyde-free, lightweight, high-strength and fine-surface fir oriented strand board.

[0005] The technical solution adopted in the present invention is:

[0006] A formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board production equipment includes a support platform, a plurality of oriented rollers are provided on the support platform, the oriented rollers are rotatably connected to the inner wall of the support platform, and a conveyor belt is provided on one side of the oriented rollers; a pre-orientation mechanism is provided on one side of the support platform, and the pre-orientation mechanism includes a fixed frame, the fixed frame is located on one side of the support platform, a control frame is slidingly provided in the fixed frame, a discharge roller is provided on the side of the control frame close to the oriented roller, and a support plate is provided at each end of the discharge roller, the discharge roller is rotatably connected to the support plate, and the support plate is fixedly connected to the control frame.

[0007] As a preferred embodiment of the present invention, a special-shaped plate is fixedly provided on one side of the support platform close to the fixing frame, a control cylinder is provided between the fixing frame and the special-shaped plate, the cylinder barrel and piston rod of the control cylinder are hinged to the fixing frame and the special-shaped plate respectively, the fixing frame and the special-shaped plate are hinged, and the connection between the fixing frame and the special-shaped plate is located between the control cylinder and the support platform; the horizontal height of the hinge point between the control cylinder and the special-shaped plate is smaller than the horizontal height of the hinge point between the fixing frame and the special-shaped plate.

[0008] As a preferred embodiment of the present invention, a sliding plate is respectively provided at both ends of the control frame, a sliding bar is fixedly provided at one end of each sliding plate close to the control frame, and the control frame is slidably connected to the sliding bar; a control shaft is rotatably provided on the sliding plate, a cam is fixed on the control shaft, and the cam is located between the fixed frame and the control frame, and a friction pad is fixedly provided at one end of the control frame close to the fixed frame, and the cam is in contact with the friction pad.

[0009] As a preferred embodiment of the present invention, a placement box is fixed on each side of the fixed frame, a placement space is provided in the placement box, a rack is fixed on the side of the fixed frame, the rack is located in the placement space, a movable groove is provided on the fixed frame, the movable groove corresponds to the sliding plate, the control shaft passes through the sliding plate, and a driving sector gear is fixed on one end of the control shaft located in the placement space, and the driving sector gear is engaged with the rack.

[0010] As a preferred embodiment of the present invention, a control motor is provided on one side of the control shaft, the control motor is fixedly connected to the sliding plate, a driving gear is fixedly provided on the output shaft of the control motor, an alignment gear is fixedly provided on the control shaft, the driving gear is meshed with the alignment gear, and the alignment gear is located between the driving sector gear and the sliding plate.

[0011] As a preferred embodiment of the present invention, a drive shaft is fixedly provided on the side of the drive sector gear away from the control shaft, and the drive shaft is rotatably set on the connecting plate, and a transmission shaft is rotatably provided on the end of the connecting plate away from the drive shaft, and a drive sector gear is fixed on the end of the transmission shaft away from the connecting plate, and a transmission gear is provided on the side of the transmission sector gear away from the connecting plate, and the transmission gear is fixedly connected to the transmission shaft, and a drive gear is provided on one side of the transmission gear, and the drive gear is fixedly connected to the control shaft, and the drive gear is located between the alignment gear and the sliding plate, and the drive gear is meshed with the transmission gear.

[0012] As a preferred embodiment of the present invention, a reserved groove is provided between the rack and the sliding plate, the driving gear and the transmission gear are located in the reserved groove, and the driving sector gear and the transmission sector gear are located on the side of the reserved groove away from the sliding plate; teeth are provided on both sides of the rack, and the transmission sector gear and the driving sector gear respectively cooperate with the teeth on one side of the rack.

[0013] As a preferred embodiment of the present invention, a control box is fixedly provided on one side of the support platform, and a driving assembly is provided in the control box, and the driving assembly is used to drive the multiple groups of directional rollers to rotate synchronously and to drive the conveyor belt to rotate; a unloading motor is fixedly provided on one of the support plates, and the output shaft of the unloading motor is driven by a synchronous belt pulley, and the pulley is fixedly provided on the unloading roller, and a shielding plate is provided on the side of the unloading motor away from the support plate, and the shielding plate is fixedly connected to the support plate.

[0014] A production process for formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board comprises the following steps:

[0015] S1, fir wood shavings; using a ring flaker to shaving fir wood to obtain shavings, and transporting them to a wet shavings silo for temporary storage;

[0016] S2, drying and screening; using a contact heating rotary tube bundle dryer to dry the wet wood chips until the moisture content of the wet wood chips reaches the required level, dry wood chips are obtained, and the dry wood chips are screened using a wood chip shaker to obtain large wood chips, small wood chips and fine materials, which are then transported to different wood chip dry material silos for temporary storage;

[0017] S3, gluing; selecting a certain amount of large wood chips, small wood chips and fine materials by measuring and gluing, wherein the formaldehyde content in the glue does not exceed the specified value;

[0018] S4, lower surface paving: first lay a layer of fine material, and then lay a layer of longitudinal shavings on the fine material. The longitudinal shavings are large shavings.

[0019] S5, core layer paving: laying a layer of transverse shavings on the longitudinal shavings, the transverse shavings being small shavings;

[0020] S6, paving the upper surface; laying a layer of longitudinal shavings on the transverse shavings, the longitudinal shavings are also large shavings, and then laying a layer of fine material on the longitudinal shavings to obtain a slab;

[0021] S7, hot pressing forming; using a particleboard hot press machine, continuously hot pressing the slab to obtain a plain board;

[0022] S8, edge sawing and cutting; the plain board is subjected to edge sawing and cross-cutting sawing in sequence, and the particle board is obtained after testing for bubble-free conditions.

[0023] As a preferred embodiment of the present invention, in steps S4, S5 and S6, during the paving process of the surface layer and the core layer, a formaldehyde-free, lightweight, high-strength, fine-surfaced fir oriented strand board production equipment is used to carry out directional paving of large and small shavings, respectively. The shavings are first oriented initially using a predetermined orientation mechanism, and then the shavings after the initial orientation are sent to the orientation roller and fall onto the conveyor belt to complete the directional paving.

[0024] The beneficial effects of the present invention are as follows: as a formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board production equipment and process, the present invention uses a pre-orientation mechanism to pre-orient the strands before the strands are oriented and laid, so that the direction of the strands in the surface and core layers of the slab is easier to control, and the oriented surface strands and the oriented core strands are perpendicularly staggered with each other to form a multi-layer structure, the strength of which is easier to meet the specified requirements; the installation position of the orientation roller and the pre-orientation mechanism can be flexibly adjusted, and can be used not only for longitudinal strand orientation, but also for transverse strand orientation by changing the installation position of the orientation roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 This invention Figure 1 A side structural diagram of

[0028] Figure 3 This invention Figure 1 A schematic structural diagram of a predetermined orientation mechanism;

[0029] Figure 4 This invention Figure 3 A schematic diagram of the front structure of FIG.

[0030] Figure 5 This invention Figure 4 BB direction structural diagram;

[0031] Figure 6 This invention Figure 5 Schematic diagram of the enlarged structure at C;

[0032] Figure 7 This invention Figure 4 AA direction structural diagram;

[0033] Figure 8 This invention Figure 1 A schematic diagram of the internal structure of one of the placement boxes;

[0034] Figure 9 This invention Figure 1 Schematic diagram of the control axis structure. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0037] The following combination Figure 1-3 The specific embodiment of the present invention is described. A formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board production equipment includes a support platform 13. The support platform 13 is provided with a plurality of groups of oriented rollers 12. The oriented rollers 12 are rotatably connected to the inner wall of the support platform 13. A conveyor belt 11 is provided on one side of the oriented rollers 12; a pre-orientation mechanism is provided on one side of the support platform 13, and the pre-orientation mechanism includes a fixed frame 16. The fixed frame 16 is located on one side of the support platform 13. A control frame 17 is slidingly provided in the fixed frame 16. A discharge roller 22 is provided on the side of the control frame 17 close to the oriented roller 12. A support plate 23 is provided at each end of the discharge roller 22. The discharge roller 22 is rotatably connected to the support plate 23, and the support plate 23 is fixedly connected to the control frame 17. Before the shavings are oriented and laid, they are pre-oriented by a pre-orientation mechanism, making it easier to control the direction of the shavings on the surface and core layers of the particleboard, while also facilitating uniform laying of the slab, significantly improving the laying efficiency and pass rate. The installation direction and position of the oriented rollers 12, as well as the spacing between the rollers on each set of oriented rollers 12, are adjustable, so that the loading and unloading speeds of the shavings passing through the oriented rollers 12 are adaptable.

[0038] Advantageously, a special-shaped plate 20 is fixed to the side of the support platform 13 close to the fixing frame 16, and a control cylinder 19 is provided between the fixing frame 16 and the special-shaped plate 20. The cylinder barrel and piston rod of the control cylinder 19 are respectively hinged to the fixing frame 16 and the special-shaped plate 20. The fixing frame 16 and the special-shaped plate 20 are hinged, and the connection between the fixing frame 16 and the special-shaped plate 20 is located between the control cylinder 19 and the support platform 13; the horizontal height of the hinge point between the control cylinder 19 and the special-shaped plate 20 is less than the horizontal height between the fixing frame 16 and the special-shaped plate 20. 0 hinge point horizontal height; the heights of the two ends of the special-shaped plate 20 are different, and the control cylinder 19 increases the stroke of the fixed frame 16 to ensure that the side of the fixed frame 16 close to the discharge roller 22 can be pressed down or lifted up. When the side of the fixed frame 16 close to the discharge roller 22 is pressed down, the shavings are conveyed and briefly stopped to continuously convey the shavings. When the side of the fixed frame 16 close to the discharge roller 22 is lifted up, it runs a cycle quickly to change the shape of the shavings inside it to ensure that there are sufficient shavings to be discharged when the side of the fixed frame 16 close to the discharge roller 22 is pressed down next time.

[0039] Advantageously, a sliding plate 28 is provided at each end of the control frame 17. Each sliding plate 28 is fixedly mounted on the end closest to the control frame 17 with a slide bar 27, with the control frame 17 being slidably connected to the slide bar 27. A control shaft 25 is rotatably mounted on the sliding plate 28, and a cam 24 is fixedly mounted on the control shaft 25. The cam 24 is positioned between the fixed frame 16 and the control frame 17. A friction pad 21 is fixedly mounted on the end of the control frame 17 closest to the fixed frame 16, with the cam 24 in contact with the friction pad 21. The cam 24 enables relative movement (up and down) of the fixed frame 16 relative to the control frame 17. At this time, the fixed frame 16 moves while swinging. Since the wood chips have a certain weight after being mixed with glue, the fixed frame 16 always tends to move downward.

[0040] Advantageously, a placement box 15 is fixedly provided on each side of the fixed frame 16, wherein a placement space 29 is provided within the placement box 15. A rack 31 is fixedly provided on the side of the fixed frame 16, and the rack 31 is located within the placement space 29. A movable slot 33 is provided on the fixed frame 16, and the movable slot 33 corresponds to the sliding plate 28. The control shaft 25 passes through the sliding plate 28. A drive sector gear 36 is fixedly provided on one end of the control shaft 25 located within the placement space 29, and the drive sector gear 36 meshes with the rack 31. The drive sector gear 36 is an incomplete gear, and meshing effect occurs only when its toothed portion contacts the toothed portion of the rack 31. When its untoothed portion contacts the rack 31, there is no restraining effect. The drive sector gear 36 can move freely relative to the rack 31, facilitating the resetting of the drive sector gear 36, i.e., the reciprocating movement of the fixed frame 16.

[0041] Advantageously, a control motor 41 is provided on one side of the control shaft 25. The control motor 41 is fixedly connected to the sliding plate 28. A driving gear 40 is fixedly provided on the output shaft of the control motor 41. A positioning gear is fixedly provided on the control shaft 25. The driving gear 40 meshes with the positioning gear, and the positioning gear is located between the drive sector gear 36 and the sliding plate 28. When the fixed frame 16 moves (forward and backward), the entire sliding plate 28 moves with it, and the control motor 41 and multiple gear assemblies connected to the sliding plate 28 also move together. Here, the control shaft 25 also moves together, but the movement of the control shaft 25 does not affect its rotation. The cam 24 can still drive the fixed frame 16 to move up and down.

[0042] Advantageously, a drive shaft 42 is fixedly provided on the side of the drive sector gear 36 away from the control shaft 25, and the drive shaft 42 is rotatably set on the connecting plate 32. A transmission shaft 43 is rotatably provided on the end of the connecting plate 32 away from the drive shaft 42, and a drive sector gear 34 is fixedly provided on the end of the transmission shaft 43 away from the connecting plate 32. A transmission gear 35 is provided on the side of the transmission sector gear 34 away from the connecting plate 32, and the transmission gear 35 is fixedly connected to the transmission shaft 43. A drive gear 37 is provided on one side of the transmission gear 35, and the drive gear 37 is fixedly connected to the control shaft 25. The drive gear 37 is located between the alignment gear and the sliding plate 28, and the drive gear 37 is meshed with the transmission gear 35.

[0043] Advantageously, a reserved slot 30 is defined between the rack 31 and the sliding plate 28. The drive gear 37 and the transmission gear 35 are located within the reserved slot 30. The drive sector gear 36 and the transmission sector gear 34 are located on the side of the reserved slot 30 away from the sliding plate 28. Teeth are provided on both sides of the rack 31, and the transmission sector gear 34 and the drive sector gear 36 respectively mate with the teeth on one side of the rack 31. The toothed portions of the drive sector gear 36 and the transmission sector gear 34 do not engage with the rack 31 simultaneously. When the transmission sector gear 34 is disengaged from the rack 31, the drive sector gear 36 immediately engages with the rack 31.

[0044] Advantageously, a control box 14 is fixedly mounted on one side of the support platform 13. A drive assembly is housed within the control box 14, which is used to drive the multiple groups of directional rollers 12 to rotate synchronously and to drive the conveyor belt 11 to rotate. A feed motor is fixedly mounted on one of the support plates 23. The output shaft of the feed motor transmits a pulley 38 via a synchronous belt 26. The pulley 38 is fixedly mounted on the feed roller 22. A baffle plate 18 is provided on the side of the feed motor away from the support plate 23. The baffle plate 18 is fixedly connected to the support plate 23. There is a certain distance between the feed roller 22 and the open side of the fixed frame 16. This distance is affected by the size of the wood chips, so the installation positions of the feed rollers 22 used for longitudinal directional paving and those used for transverse directional paving are different. The connection position between the support plate 23 and the fixed frame 16 can be adjusted by bolts.

[0045] A production process for formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board comprises the following steps:

[0046] S1, fir wood shavings; using a ring flaker to shaving fir wood to obtain shavings, and transporting them to a wet shavings silo for temporary storage;

[0047] S2, drying and screening; using a contact heating rotary tube bundle dryer to dry the wet wood chips until the moisture content of the wet wood chips reaches the required level, dry wood chips are obtained, and the dry wood chips are screened using a wood chip shaker to obtain large wood chips, small wood chips and fine materials, which are then transported to different wood chip dry material silos for temporary storage;

[0048] S3, gluing; selecting a certain amount of large wood chips, small wood chips and fine materials by measuring and gluing, wherein the formaldehyde content in the glue does not exceed the specified value;

[0049] S4, lower surface paving: first lay a layer of fine material, and then lay a layer of longitudinal shavings on the fine material. The longitudinal shavings are large shavings.

[0050] S5, core layer paving: laying a layer of transverse shavings on the longitudinal shavings, the transverse shavings being small shavings;

[0051] S6, paving the upper surface; laying a layer of longitudinal shavings on the transverse shavings, the longitudinal shavings are also large shavings, and then laying a layer of fine material on the longitudinal shavings to obtain a slab;

[0052] S7, hot pressing forming; using a particleboard hot press machine, continuously hot pressing the slab to obtain a plain board;

[0053] S8, edge sawing and cutting; the plain board is subjected to edge sawing and cross-cutting sawing in sequence, and the particle board is obtained after testing for bubble-free conditions.

[0054] Advantageously, in steps S4, S5 and S6, during the paving process of the surface layer and the core layer, a formaldehyde-free, lightweight, high-strength, fine-surfaced fir oriented strand board production device is used to carry out directional paving of large and small shavings, respectively. The shavings are first oriented initially using a predetermined orientation mechanism, and then the shavings after the initial orientation are sent to the orientation roller 12 and fall onto the conveyor belt 11 to complete the directional paving.

[0055] Working principle of the present invention:

[0056] The production equipment for formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board of the present invention requires at least three devices connected in parallel in the operation process, which are respectively responsible for the orienting and laying of the longitudinal strands of the lower surface layer, the orienting and laying of the transverse strands of the core layer, and the orienting and laying of the longitudinal strands of the upper surface layer;

[0057] The unloading speed of the predetermined mechanism is adapted to the speed of the conveyor belt 11 to ensure the continuity of the shavings paving;

[0058] Different paving sections correspond to different wood chips, which are respectively delivered to the control frame 17 by common feeding equipment (belt conveyor equipment);

[0059] The control motor 41 is started to drive the driving gear 40 to rotate, and the driving gear 40 drives the control shaft 25 to rotate through the positioning gear;

[0060] When the control shaft 25 rotates, the cam 24 rotates along with the control shaft 25. After the cam 24 lifts the control frame 17 to the highest point, the control frame 17 always contacts the surface of the cam 24 under the action of its own weight and the weight of the wood chips mixed with glue and returns to the lowest point.

[0061] The rotation of the control shaft 25 drives the driving sector gear 36 and the driving gear 37 to rotate together. The toothed portion of the driving sector gear 36 engages with the rack 31 to drive the sliding plate 28 to move. The slider 27 on the sliding plate 28 drives the control frame 17 to move along with the control frame 17. At this time, the control frame 17 moves up and down (reciprocating up and down) and moves forward and backward.

[0062] The rotation of the drive gear 37 drives the transmission gear 35 to rotate, and the transmission gear 35 drives the transmission shaft 43 to rotate. The transmission sector gear 34 rotates along with the transmission shaft 43. After the toothed portion of the transmission sector gear 34 engages with the rack 31, it drives the sliding plate 28 to move in the opposite direction. At this time, the control frame 17 moves up and down in a reciprocating manner, and also moves forward and backward in a reciprocating manner.

[0063] The control cylinder 19 is activated and periodically controls the extension and contraction of its piston rod. The control cylinder 19 can control the tilt of the fixed frame 16, and can make the side of the fixed frame 16 close to the directional roller 12 tilt downward or the side of the fixed frame 16 away from the directional roller 12 tilt downward (the tilt angle is very small);

[0064] Each time the side of the fixed frame 16 close to the orientation roller 12 tilts downward, the control frame 17 slides downward relative to the fixed frame 16. At the same time, the control frame 17 slides relative to the fixed frame 16 toward the side away from the orientation roller 12. The wood chips in the control frame 17 move relative to the control frame 17 toward the side close to the orientation roller 12 under the action of inertia (the wood chips tend to maintain their current state after being thrown up).

[0065] The unloading motor is started, and the unloading motor drives the pulley 38 to rotate through the synchronous belt 26. The unloading roller 22 rotates along with the pulley 38. The surface of the unloading roller 22 has a certain degree of roughness. The lowest layer of shavings closest to the side of the directional roller 12, which contacts the unloading roller 22, will be pulled out by the rotation of the unloading roller 22 and move parabolically to the upper side of the rolling directional roller 12. Then, the shavings of the next lower layer that contact the unloading roller 22 will also be pulled out by the rotation of the unloading roller 22. The rolling directional roller 12 will orient the shavings that are continuously pulled out again and drop them onto the conveyor belt 11 to complete the paving.

[0066] During the above process, if the shavings sheet (the shavings sheet is rectangular in shape and its length is much greater than its width) on the side closest to the oriented roller 12 is horizontal or inclined, the part of it extending outside the control frame 17 is not enough to contact the discharge roller 22, or the part contacting the discharge roller 22 is too small to be pulled out by the discharge roller 22 through friction. This part of the shavings sheet will return to the control frame 17 when the fixed frame 16 tilts downward on the side away from the oriented roller 12, and adjust its posture by moving up and down, moving forward and backward, and swinging the control frame 17 back and forth. When it contacts the discharge roller 22 next time, if the contact part with the discharge roller 22 is sufficient (most likely longitudinal, or slightly inclined, that is, the length direction of the shavings sheet is basically consistent with the conveying direction of the conveyor belt 11 or has a small angle), it will be conveyed to the oriented roller 12 for paving.

[0067] It is necessary to explain here that a weight sensor is provided in the control frame 17, which periodically detects the weight of the wood chips in the control frame 17 and feeds back to the material transport mechanism to ensure that there are sufficient wood chips in the control frame 17. When the wood chips in the control frame 17 are maintained at a certain quantity (weight), the discharge amount brought about by its periodic swinging movement is ideal, that is, within a controllable range, it is adapted to the conveying speed of the conveyor belt 11 to ensure uniform paving of the wood chips; and if the base number of wood chips in the control frame 17 is large enough, then within a certain period of time, the wood chips pulled out along the axial direction of the discharge roller 22 are also uniform.

[0068] In particular, the present invention provides a formaldehyde-free, light-weight, high-strength, fine-surface fir oriented strand board production equipment, refer to the attached Figure 1 , is used for longitudinal shavings orientation. When orienting shavings horizontally, it is necessary to change the conveying direction of the conveyor belt 11, that is, change the relative installation position of the conveyor belt 11, the orientation roller 12 and the support platform 13. Only the slab paved on the lower surface is transported from the axial direction of the orientation roller 12 and passes directly under the orientation roller 12; by adjusting the spacing between multiple groups of orientation rollers 12 and the gap between the multiple rollers of each group of orientation rollers 12, the purpose of evenly falling shavings on the slab can be achieved.

[0069] In addition, if there are special requirements, the predetermined orientation mechanism of the present invention can also guide the wood chips to be laid obliquely into slabs to meet appearance requirements.

[0070] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0071] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A production equipment for formaldehyde-free, lightweight, high-strength, fine-surface fir oriented strand board, characterized by: The present invention relates to a method for producing a conveyor belt comprising: providing a support platform, wherein the support platform is provided with a plurality of directional rollers, the directional rollers are rotatably connected to the inner wall of the support platform, and a conveyor belt is provided on one side of the directional roller; a predetermined orientation mechanism is provided on one side of the support platform, and the predetermined orientation mechanism comprises a fixed frame, the fixed frame is located on one side of the support platform, a control frame is slidably provided in the fixed frame, a discharge roller is provided on the side of the control frame close to the directional roller, and a support plate is provided at each end of the discharge roller, the discharge roller is rotatably connected to the support plate, and the support plate is fixedly connected to the control frame; one of the said A feeding motor is fixedly provided on the support plate, and an output shaft of the feeding motor drives a pulley through a synchronous belt, and the pulley is fixedly provided on the feeding roller, and a shielding disk is provided on the side of the feeding motor away from the support plate, and the shielding disk is fixedly connected to the support plate; there is a certain distance between the feeding roller and the opening side of the fixed frame, and the feeding roller rotates together with the pulley, and the surface of the feeding roller has a certain degree of roughness, and the bottom layer of shavings closest to the side of the directional roller, which contacts the feeding roller, will be pulled out by the rotation of the feeding roller and move parabolically to the upper side of the rolling directional roller; A sliding plate is provided at each end of the control frame, and a sliding bar is fixedly provided at one end of each sliding plate close to the control frame, and the control frame is slidably connected to the sliding bar; a control shaft is rotatably provided on the sliding plate, and a cam is fixed on the control shaft, and the cam is located between the fixed frame and the control frame, and a friction pad is fixedly provided at one end of the control frame close to the fixed frame, and the cam is in contact with the friction pad.

2. The production equipment for formaldehyde-free, lightweight, high-strength, fine-surface Chinese fir oriented strand board according to claim 1, characterized in that: A special-shaped plate is fixedly provided on one side of the support platform close to the fixing frame, a control cylinder is provided between the fixing frame and the special-shaped plate, a cylinder barrel and a piston rod of the control cylinder are hinged to the fixing frame and the special-shaped plate respectively, the fixing frame and the special-shaped plate are hinged, and a connection between the fixing frame and the special-shaped plate is located between the control cylinder and the support platform; a horizontal height of a hinge point between the control cylinder and the special-shaped plate is less than a horizontal height of a hinge point between the fixing frame and the special-shaped plate.

3. The production equipment for formaldehyde-free, lightweight, high-strength, fine-surface Chinese fir oriented strand board according to claim 1, characterized in that: A placement box is fixed on each side of the fixed frame, a placement space is provided in the placement box, a rack is fixed on the side of the fixed frame, the rack is located in the placement space, a movable groove is provided on the fixed frame, the movable groove corresponds to the sliding plate, the control shaft passes through the sliding plate, and a driving sector gear is fixed on one end of the control shaft located in the placement space, and the driving sector gear is meshed with the rack.

4. The production equipment for formaldehyde-free, lightweight, high-strength, fine-surface Chinese fir oriented strand board according to claim 3, characterized in that: A control motor is provided on one side of the control shaft, and the control motor is fixedly connected to the sliding plate. A driving gear is fixedly provided on the output shaft of the control motor, and an alignment gear is fixedly provided on the control shaft. The driving gear is meshed with the alignment gear, and the alignment gear is located between the driving sector gear and the sliding plate.

5. The production equipment for formaldehyde-free, lightweight, high-strength, fine-surfaced fir oriented strand board according to claim 4, characterized in that: A drive shaft is fixedly provided on the side of the drive sector gear away from the control shaft, and the drive shaft is rotatably provided on the connecting plate. A transmission shaft is rotatably provided on one end of the connecting plate away from the drive shaft, and a drive sector gear is fixed on one end of the transmission shaft away from the connecting plate. A transmission gear is provided on the side of the transmission sector gear away from the connecting plate, and the transmission gear is fixedly connected to the transmission shaft. A drive gear is provided on one side of the transmission gear, and the drive gear is fixedly connected to the control shaft. The drive gear is located between the alignment gear and the sliding plate, and the drive gear is meshed with the transmission gear.

6. The production equipment for formaldehyde-free, lightweight, high-strength, fine-surfaced fir oriented strand board according to claim 5, characterized in that: A reserved groove is provided between the rack and the sliding plate, the driving gear and the transmission gear are located in the reserved groove, and the driving sector gear and the transmission sector gear are located on the side of the reserved groove away from the sliding plate; teeth are provided on both sides of the rack, and the transmission sector gear and the driving sector gear respectively cooperate with the teeth on one side of the rack.

7. The production equipment for formaldehyde-free, lightweight, high-strength, fine-surface Chinese fir oriented strand board according to claim 2, characterized in that: A control box is fixedly provided on one side of the support platform. A driving assembly is provided in the control box. The driving assembly is used to drive the multiple groups of directional rollers to rotate synchronously and to drive the conveyor belt to rotate.

8. A process for producing formaldehyde-free, lightweight, high-strength, and fine-surfaced fir oriented strand board, using the formaldehyde-free, lightweight, high-strength, and fine-surfaced fir oriented strand board production equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, fir wood shavings; The fir wood is shaving by a ring flaker to obtain shavings, which are then transported to a wet shavings silo for temporary storage; S2, drying and screening; using a contact heating rotary tube bundle dryer to dry the wet wood chips until the moisture content of the wet wood chips reaches the required level, dry wood chips are obtained, and the dry wood chips are screened using a wood chip shaker to obtain large wood chips, small wood chips and fine materials, which are then transported to different wood chip dry material silos for temporary storage; S3, mixing glue; selecting a certain amount of large wood chips, small wood chips and fine materials by measuring and mixing glue, wherein the formaldehyde content in the glue does not exceed the specified value; S4, lower surface paving: first lay a layer of fine material, and then lay a layer of longitudinal shavings on the fine material. The longitudinal shavings are large shavings. S5, core layer paving: laying a layer of transverse shavings on the longitudinal shavings, the transverse shavings being small shavings; S6, paving the upper surface; laying a layer of longitudinal shavings on the transverse shavings, the longitudinal shavings are also large shavings, and then laying a layer of fine material on the longitudinal shavings to obtain a slab; S7, hot pressing forming; using a particleboard hot press machine, continuously hot pressing the slab to obtain a plain board; S8, sawing and cutting; The raw board is sequentially edge sawed and cross-cut sawed, and after checking for bubbling, the particleboard is obtained; In steps S4, S5 and S6, during the paving process of the surface layer and the core layer, the large and small wood chips are oriented and paved respectively using a formaldehyde-free, lightweight, high-strength, fine-surfaced fir oriented strand board production equipment as described in any one of claims 1 to 7. The wood chips are first oriented initially using a predetermined orientation mechanism, and then the initially oriented wood chips are sent to the orientation roller and fall onto the conveyor belt to complete the oriented paving.

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