Processing technology of wear-resistant multi-layer solid wood composite floor

Abstract

The invention discloses a processing technology of a wear-resistant multi-layer solid wood composite floor. The processing technology comprises the following steps that firstly, a lifting part drives a lifting frame to descend to a transverse sanding position; then, the pneumatic push plate applies upward jacking force to the lifting frame, so that the lifting frame slides downwards at constant preset pressure under the action of gravity and the jacking force; the abrasive belt on the lifting frame rotates and transversely sands the surface of the plate blank in the downward sliding process, so that a corresponding transverse groove is formed in the surface of the plate blank; after transverse sanding of the sanding belt is completed, the lifting piece drives the lifting frame to ascend to the initial position. The transverse sanding depth of the sanding belt can be adjusted, and the control precision of the transverse sanding depth is improved.

Description

Technical Field

[0001] This invention relates to a solid wood composite flooring, and more particularly to a processing technology for a wear-resistant multi-layer solid wood composite flooring. Background Technology

[0002] To improve the anti-slip performance and aesthetics of engineered wood flooring, some manufacturers currently create horizontal grooves on the surface. These grooves, combined with the longitudinal grain of the wood, create a texture similar to linen. Based on this, existing processing techniques for this linen-like flooring, as shown in patent 201811484596.1, involve grinding the surface of the board with a sanding belt at a specified speed and pressure, creating horizontal grooves of a specified depth. However, this processing technique has several drawbacks in practice.

[0003] Firstly, the control accuracy of the groove depth of conventional linen flooring needs to be controlled within ±0.1mm, while existing drive equipment for sanding belts has difficulty in achieving precise control of the sanding belt height within this tolerance range.

[0004] Secondly, due to inherent thickness variations in the slab itself, and the fact that the abrasive belt itself indents under pressure when pressing against the slab surface, limiting only the descent height of the abrasive belt can easily lead to variations in the depth of the transverse grooves on different slab surfaces. Furthermore, the abrasive belt will experience wear after long-term grinding, causing variations in the depth of the transverse grooves after grinding with abrasive belts of varying wear levels, further increasing the difficulty for manufacturers to control the depth of the transverse grooves.

[0005] Thirdly, since the abrasive belt needs to press the surface of the slab with a constant preset pressure, how to control the abrasive belt to maintain a constant pressure during the grinding process and avoid the abrasive belt from grinding too deeply after it has reached the target depth has also become a technical problem that manufacturers need to solve.

[0006] Due to the aforementioned limitations, existing linen flooring makes it difficult to adjust the depth of the transverse grooves on the floor surface by controlling the grinding height of the sanding belt. The flooring can only be moved through a sanding belt at a specified speed and at a fixed height, with the sanding belt sanding the floor surface transversely at a single height position while the floor is in motion. This reduces the transverse sanding depth of the sanding belt and the wear resistance of the linen flooring after molding. Summary of the Invention

[0007] The purpose of this invention is to provide a processing technology for wear-resistant multi-layer solid wood composite flooring. This technology enables adjustment of the sanding depth and improves the accuracy of controlling the sanding depth.

[0008] The technical solution of this invention: a processing technology for wear-resistant multi-layer solid wood composite flooring, comprising the following steps:

[0009] A. The lifting mechanism lowers the lifting frame to the horizontal sand position;

[0010] B. The pneumatic pusher plate applies an upward thrust to the lifting frame, causing the lifting frame to slide downwards under a constant preset pressure under the action of gravity and the thrust.

[0011] C. The sanding belt on the lifting frame rotates and sands the surface of the slab as it slides down, forming corresponding horizontal grooves on the surface of the slab.

[0012] D. After the sanding belt finishes sanding horizontally, the lifting mechanism will lift the lifting frame to the initial position.

[0013] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, in step C, when the sanding belt contacts the surface of the board blank, the pressure sensor below the board blank senses the downward pressure applied by the sanding belt to the board blank and records the initial sanding time of the board blank; in step D, the lifting component obtains the sanding completion time of the board blank based on the initial sanding time, and drives the lifting frame to rise to the initial position at the sanding completion time.

[0014] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, the processing technology is carried out by a horizontal sanding device. The horizontal sanding device includes a conveying platform, a pressure sensor is installed in the conveying platform, a lifting frame is installed above the conveying platform, at least one sanding belt is installed on the lifting frame, mounting seats are connected to both sides of the lifting frame via guide rods, the mounting seats and the lifting frame are connected to each other via lifting components, and pneumatic push plates are installed on both sides below the lifting frame.

[0015] The lifting mechanism is used to control the lifting frame to descend to the horizontal sand position and rise to the initial position;

[0016] The pneumatic pusher plate is used to provide an upward pushing force to the lifting frame, so that the lifting frame slides down with a constant preset pressure under the action of gravity and the pushing force.

[0017] The abrasive belt is used to perform rotating horizontal sanding on the surface of the slab.

[0018] The pressure sensor is used to detect the downward pressure applied to the slab.

[0019] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, the lifting component is an electric push rod. One end of the electric push rod is fixedly connected to the mounting base, and the rod head of the electric push rod passes through the lifting frame and is connected to a support plate. The support plate is used to support the lifting frame.

[0020] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, a photoelectric switch is provided below the conveying platform, and clamping assemblies are provided on both sides of the conveying platform. The clamping assembly includes an L-shaped pressure plate, one side of the pressure plate forms a limiting surface for limiting the board blank, the other side of the pressure plate forms a clamping surface for clamping the board blank, and a clamping cylinder is connected to the outside of the pressure plate.

[0021] When the slab moves above the photoelectric switch, the photoelectric switch is triggered and controls the clamping cylinders on both sides to push out the pressure plate, and the conveying platform continues to drive the slab forward.

[0022] When the slab moves to a position where it is in contact with the limiting surface, the clamping surface and the slab are separated from each other, and the conveying platform continues to move the slab forward.

[0023] When the photoelectric switch is triggered for a specified time, it controls the conveyor platform to stop conveying, and the clamping surface is in a state of mutual contact with the slab after the conveyor platform stops conveying.

[0024] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, the two sides of the lifting frame are rotatably connected to horizontal sanding shafts, and one side of the horizontal sanding shaft is externally connected to a horizontal sanding motor. The number of sanding belts is multiple and they are distributed at intervals on the two horizontal sanding shafts.

[0025] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, the pressure sensor records the initial sanding time of the board blank after detecting the downward pressure on the board blank. The lifting component calculates the sanding completion time based on the initial sanding time and the preset sanding duration, and drives the lifting frame to rise to the initial position at the sanding completion time.

[0026] The aforementioned processing technology for wear-resistant multi-layer solid wood composite flooring also includes a laser rangefinder. After the pressure sensor detects the downward pressure on the board, it records the initial transverse sanding moment of the board and simultaneously triggers the laser rangefinder. After being triggered, the laser rangefinder detects the first height position of the lifting frame, and after detecting that the lowering height of the lifting frame has reached the second height position, it controls the lifting component to drive the lifting frame to rise to the initial position. The first height position is the sum of the second height position, the set transverse groove depth, and the sanding belt deformation.

[0027] In the aforementioned processing technology of wear-resistant multi-layer solid wood composite flooring, an elastic element is provided between the support plate and the lifting frame. When the lifting frame descends to be in contact with the pneumatic push plate, the lifting element continues to drive the support plate to descend to a low position. When the laser rangefinder is triggered, the lifting element drives the elastic element to rise to a position 5-20mm below the second height position, so that when the lifting frame descends to the second height position, the support plate drives the lifting frame to rise to the initial position via the elastic element.

[0028] Compared with the prior art, the present invention has the following characteristics:

[0029] (1) By limiting the processing technology, the present invention enables the lifting frame to slide down with a constant preset pressure under the action of gravity and the top thrust of the pneumatic push plate, so that the sanding belt can maintain a constant pressing pressure during the sanding process, thereby improving the sanding effect on the surface of the slab; furthermore, by detecting the initial sanding time of the slab through the pressure sensor, the sanding completion time of the slab can be calculated based on the initial sanding time, thereby effectively avoiding the actual processing deviation of the sanding belt caused by the slab thickness error or the sanding belt thickness error, and improving the control accuracy of the processing depth of the transverse groove.

[0030] (2) Based on the above, by limiting the structure of the horizontal sanding device, the present invention can control the rotation speed, pressure and horizontal sanding time of the sanding belt, thereby realizing the adjustment of the horizontal sanding depth of the sanding belt; at the same time, since the sanding belt is pressed by gravity during the horizontal sanding process, the manufacturer can also control the horizontal groove depth according to the sliding time or sliding height of the sanding belt, without the need to control it through the mobile equipment, that is, further improve the control accuracy of the horizontal groove processing depth;

[0031] (3) By limiting the structure of the laser rangefinder and the lifting component, on the one hand, the laser rangefinder can control the lifting component to raise the lifting frame to the initial position based on the lowering height of the lifting frame, that is, to achieve the pressing height control of the lifting frame; on the other hand, the support plate can also move to below the lowest horizontal sanding position of the lifting frame during the sanding process of the sanding belt, and then, after the sanding belt completes the horizontal sanding action, it can cooperate with the elastic component to lift the lifting frame at the first time, that is, effectively prevent the sanding belt from over-pressure grinding during the waiting process of rising, and further improve the control accuracy of the horizontal groove depth;

[0032] (4) Based on the laser rangefinder, the coordination of the first height position and the second height position can, on the one hand, take the contact time between the slab and the sand belt as the starting point, that is, eliminate the influence caused by the thickness error of the slab and the sand belt; on the other hand, the deformation of the sand belt during the pressing process can be eliminated by setting the deformation amount of the sand belt, so that the lifting height of the lifting frame can correspond to the height of the sand belt during the horizontal sanding process, that is, reduce the influence of the sand belt deformation under pressure on the processing deviation; and under the above coordination, this application can control the processing accuracy of the horizontal groove depth within the range of ±0.1mm.

[0033] Therefore, the present invention can adjust the transverse sand depth of the sand belt and improve the control accuracy of the transverse sand depth. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of Embodiment 2 in its initial state;

[0035] Figure 2 yes Figure 1 A magnified view from direction A;

[0036] Figure 3 yes Figure 1 View from direction B;

[0037] Figure 4 This is a flowchart of the pressure plate's operation.

[0038] Figure 5 This is a schematic diagram of the structure of Example 2 in the horizontal sand state;

[0039] Figure 6 yes Figure 5 Sectional view along line C;

[0040] Figure 7 yes Figure 5 A magnified view in direction D;

[0041] Figure 8 This is a flowchart of the support plate's operation.

[0042] Figure 9 This is a schematic diagram of the structure of Embodiment 3 in its initial state.

[0043] The labels in the attached diagram are as follows: 1-Conveying platform, 2-Pressure sensor, 3-Lifting frame, 4-Sand belt, 5-Guide rod, 6-Mounting base, 7-Lifting component, 8-Pneumatic push plate, 9-Photoelectric switch, 10-Pressure plate, 11-Clamping cylinder, 12-Horizontal sanding shaft, 13-Laser rangefinder, 14-Elastic component, 701-Support plate, 101-Limiting surface, 102-Clamping surface. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0045] Example 1. The processing technology of wear-resistant multi-layer solid wood composite flooring includes the following steps:

[0046] A. The lifting frame is lowered to the horizontal sand position by the lifting component, which is the support position of the pneumatic push plate;

[0047] B. The pneumatic pusher plate applies an upward pushing force to the lifting frame under a set air pressure, causing the lifting frame to slide down with a pressure of 100-200N under the action of gravity and the pushing force.

[0048] C. The sanding belt on the lifting frame rotates and sands the surface of the slab as it slides down, forming corresponding horizontal grooves on the surface of the slab.

[0049] D. After the sanding belt finishes sanding horizontally, the lifting mechanism will lift the lifting frame to the initial position.

[0050] In step C, when the sanding belt contacts the surface of the slab, the pressure sensor below the slab senses the downward pressure applied by the sanding belt to the slab and records the initial sanding time of the slab; in step D, the lifting component obtains the completion time of the sanding of the slab based on the initial sanding time, and drives the lifting frame to rise to the initial position at the completion time of the sanding.

[0051] This embodiment, by limiting the processing technology, allows the abrasive belt to slowly descend at a constant preset pressure and perform transverse abrasion on the slab surface, thereby achieving adjustment of the transverse groove depth on the slab surface. Furthermore, by controlling the transverse abrasion time, the coordination of abrasive belt speed, pressure, and abrasion time ensures precise control over the transverse groove depth. Simultaneously, it reduces processing deviations caused by differences in abrasive belt thickness and slab thickness, further improving the processing accuracy of the transverse groove depth.

[0052] Example 2. Horizontal sanding device: The processing technology of the wear-resistant multi-layer solid wood composite flooring in Example 1 is carried out by a horizontal sanding device. The horizontal sanding device is configured as follows: Figure 1-8 As shown, it includes a conveying platform 1, a pressure sensor 2 inside the conveying platform 1, a lifting frame 3 above the conveying platform 1, at least one sanding belt 4 on the lifting frame 3, mounting seats 6 connected to both sides of the lifting frame 3 via guide rods 5, the mounting seats 6 and the lifting frame 3 being connected to each other via lifting components 7, and pneumatic push plates 8 below both sides of the lifting frame 3.

[0053] The lifting component 7 is used to control the lifting frame 3 to descend to the horizontal sand position and rise to the initial position;

[0054] The pneumatic pusher plate 8 is used to provide an upward pushing force to the lifting frame 3, so that the lifting frame 3 slides down with a constant preset pressure under the action of gravity and the pushing force.

[0055] The sanding belt 4 is used to perform rotating horizontal sanding on the surface of the slab.

[0056] The pressure sensor 2 is used to detect the downward pressure applied to the slab.

[0057] The lifting component 7 is an electric push rod. One end of the electric push rod is fixedly connected to the mounting base 6. The rod head of the electric push rod passes through the lifting frame 3 and is connected to a support plate 701. The support plate 701 is used to support the lifting frame 3.

[0058] The conveying platform 1 includes multiple conveying rollers arranged at intervals. The outside of the multiple conveying rollers is connected to a conveying motor via a transmission mechanism. The conveying motor drives the conveying rollers to rotate and convey the slab. Upper conveying frames are connected to both sides of the conveying rollers. The lower end of the upper conveying frame is connected to a lower conveying frame via a pressure sensor 2.

[0059] A photoelectric switch 9 is provided below the conveying platform 1, and clamping assemblies are provided on both sides of the conveying platform 1. The clamping assembly includes an L-shaped pressure plate 10. One side of the pressure plate 10 forms a limiting surface 101 for limiting the blank, and the other side of the pressure plate 10 forms a clamping surface 102 for clamping the blank. The top surface of the pressure plate 10 is lower than the upper surface of the blank, and a clamping cylinder 11 is connected to the outside of the pressure plate 10.

[0060] When the slab moves above the photoelectric switch 9, the photoelectric switch 9 triggers and controls the clamping cylinders 11 on both sides to push out the pressure plate 10, and the conveying platform 1 continues to drive the slab forward.

[0061] When the slab moves to be in contact with the limiting surface 101, the clamping surface 102 is separated from the slab, and the conveying platform 1 continues to drive the slab forward.

[0062] When the photoelectric switch 9 is triggered for a specified time, it controls the conveying platform 1 to stop conveying, and the clamping surface 102 is in a state of mutual contact with the slab after the conveying platform 1 stops conveying.

[0063] The lifting frame 3 is rotatably connected to the two sides of the horizontal sanding shaft 12. A horizontal sanding motor is connected to the outside of one side of the horizontal sanding shaft 12. The sanding belts 4 are multiple and distributed at intervals on the two sides of the horizontal sanding shaft 12. Adjacent sanding belts 4 are separated from each other by spacers sleeved on the outside of the horizontal sanding shaft 12. The spacers and the horizontal sanding shaft 12 are fixed to each other by set screws.

[0064] The two ends of the horizontal sanding shaft 12 are connected to the lifting frame 3 via bearing seats. The lifting frame 3 is connected to the horizontal sanding shaft 12 on the side away from the horizontal sanding motor via long bolt holes, so that the operator can adjust the installation position of the horizontal sanding shaft 12 through the long bolt holes, thereby tensioning the sanding belt 4.

[0065] It also includes a laser rangefinder 13. After the pressure sensor 2 detects the downward pressure on the slab, it records the initial transverse sanding moment of the slab and triggers the laser rangefinder 13. After being triggered, the laser rangefinder 13 detects the first height position of the lifting frame 3. After detecting that the lowering height of the lifting frame 3 has reached the second height position, it controls the lifting component 7 to drive the lifting frame 3 to rise to the initial position. The first height position is the sum of the second height position, the set transverse groove depth, and the sanding belt deformation. The sanding belt deformation is the amount of indentation of the sanding belt under a specified pressure, which is manually set after being measured during debugging.

[0066] An elastic element 14 is provided between the support plate 701 and the lifting frame 3, which is sleeved on the outside of the rod head of the electric push rod. When the lifting frame 3 descends to be in contact with the pneumatic push plate 8, the lifting element 7 continues to drive the support plate 701 to descend to the low position. When the laser rangefinder 13 is triggered, the lifting element 7 drives the elastic element 14 to rise to a position 5-20mm below the second height position, so that when the lifting frame 3 descends to the second height position, the support plate 701 drives the lifting frame 3 to rise to the initial position through the elastic element 14. The sand belt 4 remains in a rotating state when the lifting frame 3 returns to its original position.

[0067] In the initial state, the lifting member 7 lifts the lifting frame 3 to a high position through the cooperation of the support plate 701 and the elastic member 14. At the same time, the pneumatic push plate 8 is in a fully ejected state under the action of the set air pressure and is separated from the lifting member 7.

[0068] In use, the conveying platform 1 first moves the slab to the photoelectric switch 9. After detecting the slab, the photoelectric switch 9 controls the clamping cylinders 11 on both sides to push out and clamp the slab. At the same time, the conveying platform 1 continues to move the slab forward. When the slab moves to the contact limiting surface 101, the clamping surface 102 is still separated from the side wall of the slab, thus ensuring that the slab is clamped after it has moved into place.

[0069] After the pressure plate 10 is clamped and fixed, the lifting frame 3 is lowered by the lifting component 7, while the horizontal sand motor controls each sanding belt 4 to rotate synchronously. When the lifting frame 3 moves to contact with the pneumatic push plate 8, the lifting component 7 continues to drive the support plate 701 to the low position, so that the elastic element 14 separates from the lifting frame 3. The pneumatic push plate 8 then replaces the lifting component 7 to support the lifting frame 3, and the lifting frame 3 continues to slide down along the guide rod 5 with a pressure of 100-200N under the action of gravity and the pushing force of the pneumatic push plate 8.

[0070] When the lifting frame 3 descends to the point where the sanding belt 4 contacts the surface of the slab, the sanding belt 4 applies a downward compressive force to the slab under the action of gravity and performs grinding. After the pressure sensor 2 detects the pressure change caused by the sanding belt 4, it triggers the laser rangefinder 13, which then detects the first height position of the lifting frame 3 in the current state.

[0071] After the first height position is detected, the system calculates the second height position that the lifting frame 3 needs to reach based on the first height position. Then, based on the second height position, the lifting frame 3 is controlled to retract, so that the top surface of the elastic element 14 rises to 5-20mm below the second height position, thereby shortening the subsequent lifting time of the lifting element 7 by the elastic element 14.

[0072] When the laser rangefinder 13 detects that the lifting frame 3 is at the second height position, it indicates that the sanding belt 4 has completed the transverse sanding of the slab surface. Then, the lifting component 7 is controlled to drive the lifting frame 3 back to the initial position. The elastic element 14 is designed to dampen vibrations during the upward drive, preventing a hard collision between the support plate 701 and the still-falling lifting frame 3, which would cause vibration of the sanding belt 4 and reduce machining defects in the transverse groove. The sanding belt 4 remains rotating during the recovery process and stops after the lifting frame 3 returns to the high position, thereby reducing the possibility of the sanding belt 4 getting stuck in the transverse groove.

[0073] Example 3. Horizontal sanding device: The processing technology of the wear-resistant multi-layer solid wood composite flooring in Example 1 is carried out by a horizontal sanding device. The horizontal sanding device is composed as follows... Figure 9 As shown, it includes a conveying platform 1, a pressure sensor 2 inside the conveying platform 1, a lifting frame 3 above the conveying platform 1, at least one sanding belt 4 on the lifting frame 3, mounting seats 6 connected to both sides of the lifting frame 3 via guide rods 5, the mounting seats 6 and the lifting frame 3 being connected to each other via lifting components 7, and pneumatic push plates 8 below both sides of the lifting frame 3.

[0074] The lifting component 7 is used to control the lifting frame 3 to descend to the horizontal sand position and rise to the initial position;

[0075] The pneumatic pusher plate 8 is used to provide an upward pushing force to the lifting frame 3, so that the lifting frame 3 slides down with a constant preset pressure under the action of gravity and the pushing force.

[0076] The sanding belt 4 is used to perform rotating horizontal sanding on the surface of the slab.

[0077] The pressure sensor 2 is used to detect the downward pressure applied to the slab.

[0078] The lifting component 7 is an electric push rod. One end of the electric push rod is fixedly connected to the mounting base 6. The rod head of the electric push rod passes through the lifting frame 3 and is connected to a support plate 701. The support plate 701 is used to support the lifting frame 3.

[0079] The conveying platform 1 includes multiple conveying rollers arranged at intervals. The outside of the multiple conveying rollers is connected to a conveying motor via a transmission mechanism. The conveying motor drives the conveying rollers to rotate and convey the slab. Upper conveying frames are connected to both sides of the conveying rollers. The lower end of the upper conveying frame is connected to a lower conveying frame via a pressure sensor 2.

[0080] A photoelectric switch 9 is provided below the conveying platform 1, and clamping assemblies are provided on both sides of the conveying platform 1. The clamping assembly includes an L-shaped pressure plate 10. One side of the pressure plate 10 forms a limiting surface 101 for limiting the blank, and the other side of the pressure plate 10 forms a clamping surface 102 for clamping the blank. The top surface of the pressure plate 10 is lower than the upper surface of the blank, and a clamping cylinder 11 is connected to the outside of the pressure plate 10.

[0081] When the slab moves above the photoelectric switch 9, the photoelectric switch 9 triggers and controls the clamping cylinders 11 on both sides to push out the pressure plate 10, and the conveying platform 1 continues to drive the slab forward.

[0082] When the slab moves to be in contact with the limiting surface 101, the clamping surface 102 is separated from the slab, and the conveying platform 1 continues to drive the slab forward.

[0083] When the photoelectric switch 9 is triggered for a specified time, it controls the conveying platform 1 to stop conveying, and the clamping surface 102 is in a state of mutual contact with the slab after the conveying platform 1 stops conveying.

[0084] The lifting frame 3 is rotatably connected to the two sides of the horizontal sanding shaft 12. A horizontal sanding motor is connected to the outside of one side of the horizontal sanding shaft 12. The sanding belts 4 are multiple and distributed at intervals on the two sides of the horizontal sanding shaft 12. Adjacent sanding belts 4 are separated from each other by spacers sleeved on the outside of the horizontal sanding shaft 12. The spacers and the horizontal sanding shaft 12 are fixed to each other by set screws.

[0085] The two ends of the horizontal sanding shaft 12 are connected to the lifting frame 3 via bearing seats. The lifting frame 3 is connected to the horizontal sanding shaft 12 on the side away from the horizontal sanding motor via long bolt holes, so that the operator can adjust the installation position of the horizontal sanding shaft 12 through the long bolt holes, thereby tensioning the sanding belt 4.

[0086] After detecting the downward pressure on the slab, the pressure sensor 2 records the initial sanding time of the slab. The lifting component 7 calculates the sanding completion time based on the initial sanding time and the preset sanding duration, and drives the lifting frame 3 to rise to the initial position at the sanding completion time.

[0087] Compared to Example 2, this example controls the transverse sanding depth of the sanding belt 4 based on the transverse sanding duration, thereby enabling adjustment of the transverse sanding depth. During commissioning, the manufacturer can measure the transverse sanding duration when the slab is processed to produce transverse grooves of different depths, and control the transverse sanding device in subsequent processing based on this transverse sanding duration.

Claims

1. The processing technology of wear-resistant multi-layer solid wood composite flooring, characterized in that, Includes the following steps: A. The lifting mechanism lowers the lifting frame to the horizontal sand position; B. The pneumatic pusher plate applies an upward thrust to the lifting frame, causing the lifting frame to slide downwards under a constant preset pressure under the action of gravity and the thrust. C. The sanding belt on the lifting frame rotates and sands the surface of the slab as it slides down, forming corresponding horizontal grooves on the surface of the slab. D. After the sanding belt finishes sanding horizontally, the lifting mechanism will lift the lifting frame to the initial position.

2. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 1, characterized in that: In step C, when the sanding belt contacts the surface of the slab, the pressure sensor below the slab senses the downward pressure applied by the sanding belt to the slab and records the initial sanding time of the slab; in step D, the lifting component obtains the completion time of the sanding of the slab based on the initial sanding time, and drives the lifting frame to rise to the initial position at the completion time of the sanding.

3. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 1 or 2, characterized in that: The processing technology is carried out by a horizontal sanding device, which includes a conveying platform (1), a pressure sensor (2) is installed inside the conveying platform (1), a lifting frame (3) is installed above the conveying platform (1), at least one sanding belt (4) is installed on the lifting frame (3), and mounting seats (6) are connected to both sides of the lifting frame (3) via guide rods (5). The mounting seats (6) and the lifting frame (3) are connected to each other via lifting components (7). Pneumatic push plates (8) are installed below both sides of the lifting frame (3). The lifting component (7) is used to control the lifting frame (3) to descend to the horizontal sand position and rise to the initial position; The pneumatic push plate (8) is used to provide an upward pushing force to the lifting frame (3), so that the lifting frame (3) slides down with a constant preset pressure under the action of gravity and the pushing force. The sanding belt (4) is used to perform rotating horizontal sanding on the surface of the slab; The pressure sensor (2) is used to detect the downward pressure on the slab.

4. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 3, characterized in that: The lifting component (7) is an electric push rod. One end of the electric push rod is fixedly connected to the mounting base (6). The rod head of the electric push rod passes through the lifting frame (3) and is connected to a support plate (701). The support plate (701) is used to support the lifting frame (3).

5. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 3, characterized in that: A photoelectric switch (9) is provided below the conveying platform (1), and clamping assemblies are provided on both sides of the conveying platform (1). The clamping assembly includes an L-shaped pressure plate (10). One side of the pressure plate (10) forms a limiting surface (101) for limiting the blank, and the other side of the pressure plate (10) forms a clamping surface (102) for clamping the blank. A clamping cylinder (11) is connected to the outside of the pressure plate (10). When the slab moves above the photoelectric switch (9), the photoelectric switch (9) triggers and controls the clamping cylinders (11) on both sides to push out the pressure plate (10), and the conveying platform (1) continues to drive the slab forward; When the slab moves to be in contact with the limiting surface (101), the clamping surface (102) and the slab are separated from each other, and the conveying platform (1) continues to drive the slab forward. When the photoelectric switch (9) triggers for a specified time, it controls the conveying platform (1) to stop conveying, and the clamping surface (102) is in a state of mutual contact with the slab after the conveying platform (1) stops conveying.

6. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 3, characterized in that: The lifting frame (3) is rotatably connected to the two sides of the horizontal sand shaft (12), and the external side of one of the horizontal sand shafts (12) is connected to the horizontal sand motor. The number of sand belts (4) is multiple and they are distributed at intervals on the two sides of the horizontal sand shaft (12).

7. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 3, characterized in that: The pressure sensor (2) records the initial transverse sanding time of the slab after detecting the downward pressure on the slab. The lifting component (7) calculates the transverse sanding completion time based on the initial transverse sanding time and the preset transverse sanding duration, and drives the lifting frame (3) to rise to the initial position at the transverse sanding completion time.

8. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 4, characterized in that: It also includes a laser rangefinder (13). After the pressure sensor (2) detects the downward pressure on the slab, it records the initial transverse sanding moment of the slab and triggers the laser rangefinder (13). After being triggered, the laser rangefinder (13) detects the first height position of the lifting frame (3). After detecting that the lowering height of the lifting frame (3) reaches the second height position, it controls the lifting component (7) to drive the lifting frame (3) to rise to the initial position. The first height position is the sum of the second height position, the set transverse groove depth, and the sand belt deformation.

9. The processing technology of the wear-resistant multi-layer solid wood composite flooring according to claim 8, characterized in that: An elastic element (14) is provided between the support plate (701) and the lifting frame (3). When the lifting frame (3) descends to be in contact with the pneumatic push plate (8), the lifting element (7) continues to drive the support plate (701) to descend to a low position. When the laser rangefinder (13) is triggered, the lifting element (7) drives the elastic element (14) to rise to a position 5-20 mm below the second height position, so that when the lifting frame (3) descends to the second height position, the support plate (701) drives the lifting frame (3) to rise to the initial position through the elastic element (14).

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