A method of processing a wood-based board

Abstract

The application discloses a processing method of artificial board, which comprises the following steps: in response to a processing instruction, the artificial board and a processing cutter keep relative movement, the artificial board is attached with an edge band, the processing cutter is rotated and keeps contact with the artificial board, and the processing cutter completes the processing of the artificial board, wherein the force on the artificial board caused by the rotating direction of the processing cutter forms an extrusion effect with a trend of driving the edge band to approach the artificial board at the combined position of the artificial board and the edge band. The application can complete the milling operation, still maintain the firm adhesion of the edge band and the artificial board, completely or as far as possible utilize the existing processing production line to realize the processing and production of the artificial board, effectively avoid the idling of the milling cutter, and improve the processing efficiency and quality of the artificial board through the processing path length of the milling operation of the milling cutter.

Description

Technical Field

[0001] This invention relates to the field of engineered wood processing technology, specifically a method for processing engineered wood. Background Technology

[0002] Engineered wood products are commonly used in wood furniture. Common types include particleboard, fiberboard, finger-jointed board, and plywood. Engineered wood products need to be processed before they can be assembled into finished products for various furniture pieces. For panel furniture, the processing of engineered wood products generally involves the following steps: cutting, edge banding, drilling, milling, assembly, inspection, and packaging. In this process, edge banding is performed first, followed by milling. Milling aims to create specific structural shapes in the engineered wood, such as milling an L-shape into a section.

[0003] refer to Figure 1 , Figure 1 This is a schematic diagram of the milling process for a rectangular artificial board 2. Figure 1 The upper part represents the instant when the target milling cutter 5 just enters and begins to contact the artificial board 2, and the lower part represents the instant when the target milling cutter 5 just begins to retract and detach from the artificial board 2. The target milling cutter 5 is in a fixed position, and the artificial board 2 moves relative to the target milling cutter 5 in the direction of the straight arrow in the figure. The target milling cutter 5 needs to pass over the edge sealing strips 1 on the left and right sides of the artificial board 2 in both the entry and exit positions. As the target milling cutter 5 rotates clockwise while the artificial board 2 moves from right to left, the target milling cutter 5, when in its exit position, exerts a rightward force on the edge banding 1 on the right side of the artificial board 2. This force causes the edge banding 1 to move away from the artificial board 2, resulting in the edge banding 1 becoming loose or detached from the artificial board 2. In other words, it may pull the edge banding 1 out, loosen it, or cause the artificial board 2 to chip or swell, thus making the adhesion between the edge banding 1 and the artificial board 2 weak and affecting the finished quality of the artificial board 2, including the appearance quality of the artificial board 2 and the problem of the thickness of the artificial board 2 expanding.

[0004] Therefore, it is necessary to improve the traditional processing methods for engineered wood panels to overcome the problem that the edge banding tape and engineered wood panels are not firmly bonded when the milling cutter passes over the edge banding tape, thereby avoiding problems such as the edge banding tape being pulled out or loosened, or the engineered wood panels chipping or swelling. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method for processing engineered wood panels that can solve the problems described in the background section.

[0006] The technical solution for achieving the objective of this invention is: a method for processing engineered wood panels, comprising:

[0007] In response to processing commands, the engineered wood panel maintains relative movement with the processing tool, and edge banding tape is attached to the engineered wood panel.

[0008] The machining tool completes the machining of the engineered wood panel by rotating and maintaining contact with it.

[0009] The force exerted on the engineered wood panel by the rotation direction of the cutting tool creates a squeezing effect at the junction of the engineered wood panel and the edge banding, which tends to drive the edge banding closer to the engineered wood panel.

[0010] Furthermore, before responding to processing instructions, the engineered wood products undergo pretreatment, which includes soaking the engineered wood products in water and / or curing for a preset time.

[0011] Furthermore, the artificial board maintains relative motion with the processing tool, and the specific implementation process includes:

[0012] The engineered wood panel moves in a unidirectional linear motion along a preset direction, and the cutting tool remains in a fixed position while in contact with the engineered wood panel.

[0013] Furthermore, the machining tools include a first milling cutter and a second milling cutter. The artificial board moves unidirectionally in a straight line from one side of the first and second milling cutters along a preset direction, which is the direction closer to the first and second milling cutters.

[0014] The first milling cutter successfully initiates rotation and moves to the first position while the artificial board is in a state that satisfies condition one. The first milling cutter rotates in a first rotation direction, which is exactly opposite to the forward direction of the artificial board.

[0015] Condition 1: Before the artificial board moves, or when the artificial board continues to move along the moving path and is in a position outside the effective range of the first milling cutter when it is in the first position,

[0016] First position: The spatial range in which the first milling cutter can act on the artificial board from the outer periphery of the artificial board as it moves along the path of the artificial board, and the distance d between the part of the artificial board that the first milling cutter can act on and the end of the artificial board closest to the first milling cutter is exactly the first preset distance a.

[0017] Furthermore, after the artificial board moves to the second position, the second milling cutter moves to the third position. The second milling cutter completes its initial rotation before reaching the third position, rotating in a second rotation direction that is exactly the same as the forward direction of the artificial board.

[0018] Second position: The first milling cutter remains in contact with the artificial board, and the horizontal distance L between the part of the second milling cutter acting on the artificial board and the end of the artificial board opposite to the forward direction is ≥ a third preset distance e, the third preset distance e > 0, and the third preset distance e is sufficient to ensure that the part of the second milling cutter acting on the artificial board in the third position can contact the artificial board.

[0019] Third position: The space range in which the second milling cutter can act on the artificial board from the inner side of the end of the artificial board away from the direction of travel as the artificial board continues to move forward, and the distance f between the part of the second milling cutter that can act on the artificial board and the end of the artificial board close to the first milling cutter is exactly the first preset distance a.

[0020] Furthermore, when the second milling cutter moves to the third position, the artificial board continues to move forward until the first and second milling cutters have completely milled the edges of the artificial board to be milled. The artificial board then continues to move forward or stops moving forward, thereby completing the processing of the artificial board.

[0021] Furthermore, the first milling cutter and the second milling cutter completely mill the edge of the artificial board to be milled, which means that the sum of the length of the edge to be milled by the first milling cutter and the length of the edge to be milled by the second milling cutter is greater than or equal to the length of the edge to be milled.

[0022] Furthermore, the sum of the length of the milled edge of the artificial board processed by the first milling cutter and the length of the milled edge of the artificial board processed by the second milling cutter is greater than or equal to the length of the milled edge of the artificial board. This is specifically achieved by including:

[0023] The second milling cutter begins milling the artificial board once it reaches the third position and the board moves to a position where it can contact the second milling cutter. As the board continues to move forward, the second milling cutter continues milling the edge to be milled from the point where it just contacts the board to the end of the board away from the direction of travel. The first milling cutter continues milling the edge to be milled from the point where it contacts the board at time t1 to the point where the second milling cutter just contacts the board. Time t1 refers to the moment when the second milling cutter just contacts the board.

[0024] Furthermore, the first and second milling cutters rotate at the same preset speed. This preset speed is matched with the relative speed of the engineered wood panel relative to the milling cutters. Matching the preset speed with the relative speed means that the milling cutters' processing of the engineered wood panel satisfies condition two.

[0025] Condition 2: The milling depth of the artificial board produced by the milling cutter is within the preset threshold range, and the impact force of the milling cutter on the artificial board is insufficient to damage the artificial board, including cracking and swelling of the artificial board.

[0026] Furthermore, the specific process of achieving contact between the machining tool and the engineered wood panel includes:

[0027] The machining tool moves from a preset initial position to a target position by moving in a single linear motion along a preset direction. The target position is located on the motion path of the artificial board and the machining tool relative to each other, so that the artificial board can come into contact with the machining tool. The machining tool in the initial position is set apart from the artificial board.

[0028] The beneficial effects of this invention are:

[0029] 1. This invention controls the relative relationship between the rotation direction of the milling cutter and the forward direction of the artificial board, so that the milling cutter exerts a squeezing effect on the edge banding tape towards the artificial board, thereby avoiding problems such as the edge banding tape being broken, loosened, or separated, thus preventing the edge banding tape from expanding, and maintaining a firm bond between the edge banding tape and the artificial board while completing the milling operation.

[0030] 2. This invention requires no modification to the existing platform milling machine, or only minor local modifications, or only modifications to the drive device used to drive the milling cutter. The degree of modification is small, and it can fully or as much as possible utilize the existing processing production line to realize the processing and production of artificial boards.

[0031] 3. The present invention can also effectively avoid the idle rotation of milling cutters and the length of the processing path through milling operations, thereby improving the processing efficiency and quality of artificial boards. Attached Figure Description

[0032] Figure 1 This diagram illustrates the traditional milling process for milling a complete edge to be sealed. From the top to the bottom, it shows how the milling cutter moves forward from the entry position to the exit position as the engineered wood panel moves. Straight arrows indicate the forward direction of the engineered wood panel, and curved arrows indicate the rotation direction of the milling cutter.

[0033] Figures 2-11 This is a schematic diagram illustrating the sequential changes in the state of the engineered wood panel throughout the entire processing from start to finish, as shown in Example 1.

[0034] Figure 2 A schematic diagram of the initial state before or after processing begins;

[0035] Figure 3 A schematic diagram showing the state at which the first milling cutter enters and just begins to contact the artificial board;

[0036] Figure 4 This is a schematic diagram showing the state where the first milling cutter starts milling from its entry position and has milled a certain distance, and is located in the middle of the edge of the artificial board to be milled, while the second milling cutter has not yet come into contact with the artificial board;

[0037] Figure 5 This is a schematic diagram showing the state where the first milling cutter starts milling from its entry position and has milled a certain distance, reaching the middle position of the edge of the artificial board to be milled, while the second milling cutter just begins to contact the artificial board;

[0038] Figure 6 After the first and second milling cutters come into contact with the artificial board and mill a certain distance, they reach the end of the artificial board (the right end in the figure).

[0039] Figure 7 This is a schematic diagram showing the state of the second milling cutter at the moment it reaches the exit position and is about to detach from the artificial board;

[0040] Figure 8 This is a schematic diagram showing the state where the second milling cutter is detached from the artificial board while the first cutter remains in contact with the artificial board.

[0041] Figure 9 This is a schematic diagram showing the state at the instant when the first milling cutter reaches the exit position and is about to detach from the artificial board, while the second milling cutter has already returned to its initial position.

[0042] Figure 10 This is a schematic diagram showing the state of the first milling cutter after it has detached from the artificial board.

[0043] Figure 11 This is a schematic diagram showing the state where the first milling cutter has also retracted to its initial position.

[0044] Figure 12 This is a flowchart illustrating Example 1;

[0045] Figure 13 These are real photos showing the edge swelling phenomenon in engineered wood panels;

[0046] In the diagram, 1-edge sealing tape, 2-artificial board, 3-first milling cutter, 4-second milling cutter, and 5-target milling cutter. Detailed Implementation

[0047] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0048] To address the problem of weak adhesion between the edge banding 1 and the artificial board 2 caused by the milling cutter needing to cross the edge banding 1 during milling operations, various embodiments of the present invention provide a method for processing artificial board 2, applied to an artificial board 2 processing device. The artificial board 2 processing device includes a first milling cutter 3 and a second milling cutter 4. The first milling cutter 3 and the second milling cutter 4 are in an initial position state, with both milling cutters located on one side of the forward direction of the artificial board 2 in the initial state. The first milling cutter 3 and the second milling cutter 4 are spaced apart and gradually move away from each other along the forward direction, that is, the first milling cutter 3 is farther away from the artificial board 2 than the second milling cutter 4. The initial state refers to the state in which the artificial board 2 remains fixed and has not yet started to move forward.

[0049] Example 1

[0050] like Figures 2-13 As shown, in this embodiment, the artificial board 2 maintains unidirectional movement throughout the entire processing. For example, the artificial board 2 moves along the X-axis in the figure from the positive half-axis to the negative half-axis (i.e., from right to left). The two milling cutters maintain their respective rotation directions throughout the entire process from the start of the milling operation to the end of the milling operation, and the positions of the two milling cutters remain fixed. The method includes:

[0051] Step S101: In response to the processing command, the artificial board 2 moves along the preset direction.

[0052] For example, the milling of the artificial board 2 is usually completed using a platform milling machine. The artificial board 2 is laid flat on the transmission system of the platform milling machine. The worker can issue processing instructions on the platform milling machine through touch screen or buttons. After receiving the processing instructions, the transmission system of the platform milling machine drives the artificial board 2 forward, so that the artificial board 2 can move along a preset direction after responding to the processing instructions. Among them, the artificial board 2 can maintain unidirectional linear movement.

[0053] It is understandable that the transmission system can use existing transmission devices, such as a combination of a motor or other power source with a chain or transmission roller, so that the artificial board 2 on the chain can move in at least two opposite directions by the motor rotating forward or in reverse, thereby achieving movement along a preset direction.

[0054] Step S102: Control the first milling cutter 3 to start rotating and move to the corresponding position at the corresponding time.

[0055] During or before the artificial board 2 moves along the preset direction, the first milling cutter 3 successfully starts rotating and moves to the first position while the artificial board 2 is in a state that satisfies condition one. The first milling cutter 3 rotates in a first rotation direction, which is exactly opposite to the forward direction of the artificial board 2. When the artificial board 2 is in a state that satisfies condition one, the first milling cutter 3 needs to successfully start rotating and move to the first position. Successfully starting rotation means that the first milling cutter 3 enters a stable rotation state, not that it is still in an intermediate state between the start of rotation and the stable rotation. Therefore, the first milling cutter 3 can start moving along the first preset direction and moving to the first position and starting rotation simultaneously at the instant that the artificial board 2 begins to satisfy condition one, or it can start moving along the first preset direction and moving to the first position and starting rotation after a certain period of time after the artificial board 2 satisfies condition one. However, in both cases, it is necessary to ensure that the artificial board 2 has successfully started rotating and moved to the first position before the change from satisfying condition one to not satisfying condition one.

[0056] Condition 1: Before the artificial board 2 moves, or when the artificial board 2 continues to move along the moving path and is in the first position, the position is outside the range of action of the first milling cutter 3.

[0057] First position: The spatial range in which the first milling cutter 3 can act on the artificial board 2 from the outside of the artificial board 2 on the moving path of the first milling cutter 3, and the distance d between the part of the artificial board 2 that the first milling cutter 3 can act on and the end of the artificial board 2 that is close to the first milling cutter 3 is exactly the first preset distance a.

[0058] It is understandable that the first rotation direction being exactly opposite to the forward direction of the artificial board 2 means that the tangent vector of the first milling cutter 3 along the first rotation direction is exactly opposite to the forward direction. Figure 2 For example, Figure 2 In the middle, the first milling cutter 3 moves horizontally to the right along the tangent vector of the first rotation direction, and the artificial board 2 moves horizontally to the left in the forward direction, the two directions are exactly opposite.

[0059] Understandably, reference Figure 2 and Figure 3The first milling cutter 3 moves linearly upward along the Y-axis to reach the first position. The first milling cutter 3 only needs to make one unidirectional linear movement from the initial position to the first position. The first milling cutter 3 in the first position is on the moving path of the artificial board 2, so that after the first milling cutter 3 reaches the first position, the artificial board 2 continues to move forward a distance before contacting the first milling cutter 3 again. This allows the second milling cutter 4 to act on the artificial board 2 from the leftmost end of the artificial board 2, thus avoiding the need for repeated milling of the artificial board 2 due to a certain part not being acted on by the first milling cutter 3, or causing omissions on the edge of the artificial board 2.

[0060] The specified distance d is exactly the same as the first preset distance a, which ensures that the milling depth of the first milling cutter 3 on the artificial board 2 is controllable, preventing the milling depth from being too deep or too shallow. For example, if an L-shaped groove with a depth of 2 mm needs to be milled on the edge of the artificial board 2, the first preset distance a can be set to 2 mm. Similarly, if an L-shaped groove of a different depth needs to be milled, only the first preset distance a needs to be updated.

[0061] For example, the first milling cutter 3 starting to rotate means at least ensuring that the blade on the first milling cutter 3 can rotate, so that the blade can mill (generally achieved by cutting or slicing) on ​​the artificial board 2.

[0062] It is understandable that before deviating from condition one, it means that the artificial board 2 has not yet moved to a position where it can contact the first milling cutter 3 in the first position, that is, it has not entered the range that the first milling cutter 3 in the first position can reach. Therefore, the first milling cutter 3 can start rotating before moving. For example, after receiving the processing command, at the instant the artificial board 2 starts moving along the preset direction, the two milling cutters start rotating simultaneously, or the rotation can start after a first preset time delay from the instant. When the two milling cutters start rotating, the artificial board 2 has not yet moved to a position where it contacts the two milling cutters, that is, the distance that the artificial board 2 has moved from the instant to the first preset time is not enough to reach the position where it contacts the two milling cutters.

[0063] Rotation can be initiated during the movement before reaching the first position, or synchronously upon reaching the first position, or after reaching the first position while the artificial board 2 is still in a state that satisfies condition one. The purpose is to ensure that the first milling cutter 3 performs the milling operation on the artificial board 2 after successfully initiating rotation (meaning the milling cutter is fully rotated, not just in the initiation process of rotation). This avoids damage to the artificial board 2, such as causing burrs, while the first milling cutter 3 is still in the initiation process of rotation and in contact with the artificial board 2. Because the rotational speed of the first milling cutter 3 changes constantly during the initiation process (generally its rotational speed gradually increases), it is in an unstable state. This unstable state can easily lead to unevenness on the surface of the milled artificial board 2, making it impossible to mill the preset groove.

[0064] For example, whether the artificial board 2 is in a state (during which condition one) is met can be determined by distance or time, specifically including:

[0065] The distance b between the end of the artificial board 2 closest to the first milling cutter 3 and the central axis of the first milling cutter 3 perpendicular to the direction of the artificial board 2 is less than or equal to the second preset distance c.

[0066] Alternatively, the duration t from the start of movement of the artificial board 2 to the current time is less than or equal to the preset duration time.

[0067] By comparing b with the second preset distance c, the distance measuring device can determine whether it is necessary to start the first milling cutter 3 to move, thereby moving the first milling cutter 3 to the first position, and whether it is necessary to start the first milling cutter 3 to rotate.

[0068] By comparing the duration t with the preset duration time, the timer can determine whether the first milling cutter 3 needs to be moved to the first position, and whether the first milling cutter 3 needs to be rotated.

[0069] The two methods above achieve the same result. In practical applications, the equipment hardware can be assembled using a distance measuring device or a timer as needed, thereby achieving the controllability of the first milling cutter 3 and the artificial board 2.

[0070] Step S103: Control the second milling cutter 4 to start rotating and move to the corresponding position at the corresponding time.

[0071] The artificial board 2 continues to move forward, with both the first milling cutter 3 and the second milling cutter 4 remaining in their current positions. After the artificial board 2 reaches the second position, the second milling cutter 4 moves to the third position. Before reaching the third position, the second milling cutter 4 initiates its rotation in a second direction, which is exactly the same as the forward direction of the artificial board 2. By moving the second milling cutter 4 to the third position, it comes into contact with the artificial board 2, allowing it to perform milling operations. By initiating its rotation before reaching the third position, the second milling cutter 4 begins milling the artificial board 2 at a stable rotational speed the instant it contacts the board.

[0072] Second position: The first milling cutter 3 remains in contact with the artificial board 2, and the horizontal distance L between the part of the second milling cutter 4 acting on the artificial board 2 and the end of the artificial board 2 opposite to the forward direction is greater than or equal to the third preset distance e, the third preset distance e is greater than 0, and the third preset distance e is sufficient to make the part of the second milling cutter 4 acting on the artificial board 2 in the third position able to contact the artificial board 2.

[0073] Third position: The second milling cutter 4 moves to the space range on the moving path of the artificial board 2 that can act on the artificial board 2 from the inside of the end of the artificial board 2 away from the moving direction, and the distance f between the part of the second milling cutter 4 that can act on the artificial board 2 and the end of the artificial board 2 close to the first milling cutter 3 is exactly the first preset distance a.

[0074] Since the rotation direction of the second milling cutter 4 is opposite to the forward direction of the artificial board 2, the force exerted by the second milling cutter 4 on the edge banding 1 on the right side of the artificial board 2 is inward, that is, it squeezes the edge banding 1 towards the artificial board 2 without damaging the edge banding 1 on the right side, and does not create a tendency to move the edge banding 1 away from the artificial board 2, thus maintaining the squeezing effect that allows the edge banding 1 to be firmly bonded to the artificial board 2.

[0075] It is understandable that since both distance f and distance d are the first preset distance a, distance f and distance d are equal. If the initial positions of the first milling cutter 3 and the second milling cutter 4 are at the same horizontal height, it means that the first milling cutter 3 and the second milling cutter 4 move the same distance along the Y-axis towards the artificial board 2. If the initial positions of the first milling cutter 3 and the second milling cutter 4 are at different horizontal heights, they can be moved to the same horizontal height by setting different travel strokes (because the artificial board 2 is moving in a horizontal straight line and is always at the same horizontal height). The purpose of this setting is to ensure that the first milling cutter 3 and the second milling cutter 4 mill the same depth onto the artificial board 2.

[0076] It is also understandable that when the first milling cutter 3 and the second milling cutter 4 have different structures and therefore differ, for example, the length of the protruding inserts on the first milling cutter 3 and the second milling cutter 4 is different, then even if the two milling cutters are at the same horizontal height at the initial position, it is still necessary to adjust the different travel strokes of the two milling cutters to ultimately ensure that the depth milled by the two milling cutters is the same.

[0077] By setting a third preset distance e greater than zero, the second milling cutter 4 enters from one end of the artificial board 2 and mills a certain distance on the artificial board 2, but before it has completely milled to the other end of the artificial board 2, the second milling cutter 4 moves to a third position and comes into contact with the artificial board 2. The third preset distance e cannot be set too small. If it is set too small, it means that the first milling cutter 3 has completed most of the milling operation on the edge of the artificial board 2 to be milled, and the artificial board 2 has moved to a side where the second milling cutter 4 is located away from the end of the artificial board 2 that is moving in the direction of travel. At this point, if the second milling cutter 4 is moved to the third position, the second milling cutter 4 can no longer act on the artificial board 2.

[0078] Step S104: The artificial board 2 continues to move forward until the first milling cutter 3 and the second milling cutter 4 have completely milled the edges of the artificial board 2 to be milled. The artificial board 2 then continues to move forward or stops moving forward, thereby completing the processing of the artificial board 2.

[0079] Understandably, as the engineered wood panel 2 continues to move forward in a direction opposite to its direction of travel, the first milling cutter 3 is behind and the second milling cutter 4 is in front, with both cutters simultaneously milling the engineered wood panel 2. Since the second milling cutter 4 is in front, it will first mill away the remaining edges of the engineered wood panel 2 that need milling. As the engineered wood panel 2 continues to move forward relative to the first milling cutter 3, the first milling cutter 3 will not mill the already milled areas of the engineered wood panel 2.

[0080] For example, starting from the moment the second milling cutter 4 reaches the third position and the artificial board 2 moves to a position where it can contact the second milling cutter 4 in the third position, the second milling cutter 4 begins to mill the artificial board 2. As the artificial board 2 continues to move forward, the second milling cutter 4 continues to mill the edge to be milled from the position where it just contacts the artificial board 2 to the end of the artificial board 2 facing away from the forward direction. The first milling cutter 3 continues to mill the edge to be milled from the position where it contacts the artificial board 2 at time t1 to the position where the second milling cutter 4 just contacts the artificial board 2. Time t1 refers to the moment when the second milling cutter 4 just contacts the artificial board 2, so that the sum of the length of the edge to be milled processed by the first milling cutter 3 and the length of the edge to be milled processed by the second milling cutter 4 is greater than or equal to the length of the edge to be milled of the artificial board 2.

[0081] It is understandable that the length of the edge to be milled in the artificial board 2 is exactly the length that needs to be milled, meaning that the entire edge of the artificial board 2 needs to be milled. If only a portion of the edge to be milled in the artificial board 2 needs to be milled, then similarly, it is only necessary to ensure that the sum of the lengths is greater than or equal to the length that needs to be milled.

[0082] To improve milling efficiency and prevent the first milling cutter 3 and / or the second milling cutter 4 from idling (meaning the milling cutter does not effectively act on the artificial board 2 during rotation), it is necessary to ensure that the sum of the length of the edge to be milled by the first milling cutter 3 and the length of the edge to be milled by the second milling cutter 4 is exactly equal to the length of the edge to be milled on the artificial board 2. To achieve this, since both the first milling cutter 3 and the second milling cutter 4 remain in fixed positions, the relative speed of the artificial board 2 with respect to the first milling cutter 3 and the second milling cutter 4 is the same. Therefore, in the same unit of time, the displacement formed by the relative motion of the artificial board 2 with respect to the first milling cutter 3 and the second milling cutter 4 is the same. Thus, it is only necessary to ensure that the distance d1 between the position of the second milling cutter 4 when it just contacts the artificial board 2 and the end of the artificial board 2 away from the forward direction is exactly equal to the distance d2 between the position of the first milling cutter 3 at time t1 and the position of the second milling cutter 4 when it just contacts the artificial board 2, that is, d1=d2.

[0083] refer to Figure 5At this moment, the second milling cutter 4 is in the third position and is just in contact with the artificial board 2. The distance between the contact position a2 of the second milling cutter 4 and the artificial board 2 and the right edge of the artificial board 2 is d2. The instant the second milling cutter 4 contacts the artificial board 2 corresponds to time t1. The distance between the position a1 of the first milling cutter 3 at time t1 and the position a2 when the second milling cutter 4 just contacts the artificial board 2 is d1. Since d1 is exactly equal to d2, as the artificial board 2 continues to move forward, when the second milling cutter 4 moves to the right edge of the artificial board 2 under relative motion (while maintaining its own fixed position), the first milling cutter 3 also moves from position a1 to position a2 under relative motion (while maintaining its own fixed position). Thus, the combined action of the first milling cutter 3 and the second milling cutter 4 completely mills away the edge of the artificial board 2 to be milled. When the first milling cutter moves to position a2, the first milling cutter 3 stops rotating synchronously. When the second milling cutter 4 moves to the right edge of the artificial board 2, the first milling cutter 3 stops rotating synchronously. This avoids the ineffective idling of the milling cutter and avoids the first milling cutter 3 repeatedly processing the edge of the artificial board 2 that has already been milled by the second milling cutter 4 while rotating, thus greatly improving efficiency.

[0084] For example, when the first milling cutter 3 stops rotating, after a certain time synchronizing or delaying, the first milling cutter 3 begins to move away from the artificial board 2 and return to its initial position. Similarly, when the second milling cutter 4 stops rotating, after a certain time synchronizing or delaying, the second milling cutter 4 begins to move away from the artificial board 2 and return to its initial position. For example, after the artificial board 2 moves to the left of the two milling cutters, the first milling cutter 3 and the second milling cutter 4 then begin to retract and return to their initial positions. Therefore, when the first milling cutter 3 and the second milling cutter 4 begin to retract depends on whether condition two is met. As long as condition two is met, retraction can begin. Specifically...

[0085] Condition 2: The first milling cutter 3 and / or the second milling cutter 4 no longer need to perform milling operations on the edge of the current artificial board 2.

[0086] It should be noted that the first milling cutter 3 and the second milling cutter 4 can begin retracting simultaneously or sequentially. If they begin retracting simultaneously, both milling cutters must no longer need to mill the edge of the current artificial board 2. That is, after the second milling cutter 4 has finished milling the current artificial board 2, the first milling cutter 3 has also finished milling the current artificial board 2 before the two milling cutters can begin retracting simultaneously. If they retract sequentially, the second milling cutter 4 must retract first, followed by the first milling cutter 3. The second milling cutter 4 can begin retracting after it no longer needs to perform milling operations, and the first milling cutter 3 can also begin retracting after it has finished milling operations.

[0087] For example, once the second milling cutter 4 has milled to the right edge of the artificial board 2, it can begin its retraction operation. Similarly, once the first milling cutter 3 has milled to the position corresponding to a2, it can begin its retraction operation. Alternatively, it can remain stationary, move the artificial board 2 to the left to the side of the first milling cutter 3, and then begin its retraction operation.

[0088] Figure 8 The second milling cutter 4 begins to retract. Figure 9 The second milling cutter 4 has returned to its initial position. Figure 9 The first milling cutter 3 begins to retract. Figure 10 The first milling cutter 3 has returned to its initial position.

[0089] To improve milling quality, the second milling cutter 4 does not begin milling the artificial board 2 from its outer periphery. Instead, while rotating, the second milling cutter 4 directly contacts the edge of the artificial board 2 to be milled from below. The second milling cutter 4 creates a concave groove at the point of initial contact, with burrs at both ends of the groove. As the artificial board 2 continues to move to the left, the second milling cutter 4 removes the burrs on the right side of the concave groove, ensuring a smooth edge for the milled artificial board 2. Thus, the burrs on the left side of the concave groove need to be removed by the first milling cutter 3. Therefore, the position that the first milling cutter 3 needs to reach is at least slightly to the right of the position where the second milling cutter 4 just touches the artificial board 2, that is, it should be able to cover the burrs on the left side of the concave groove. This can be ensured by setting the stroke or rotation time of the first milling cutter 3 to exceed the position where the second milling cutter 4 just touches the artificial board 2, and the distance exceeded is within the preset distance D1. That is, after the first milling cutter 3 reaches position a2, it continues to move relative to the first milling cutter 3 to reach position a3. The distance between position a2 and position a3 (i.e., the excess distance) is greater than or equal to the preset distance D1, thereby ensuring that the first milling cutter 3 can mill off the burrs on the left side of the concave groove, ensuring that the edge of the artificial board 2 is flat after the milling operation. In this case, the sum of the length of the edge to be milled by the first milling cutter 3 and the length of the edge to be milled by the second milling cutter 4 will be slightly greater than the length of the edge to be milled of the artificial board 2. However, while maintaining high efficiency, it can better ensure the flatness of the milling, thereby improving the milling quality.

[0090] To improve milling quality, the feed rate of the artificial board 2 can be appropriately reduced, and the rotational speed of the milling cutter should be matched with the feed rate of the artificial board 2. When the milling cutter remains in a fixed position, this feed rate is also the feed rate of the artificial board 2 relative to the milling cutter. This reduces the impact force of the milling cutter on the artificial board 2, preventing excessive milling depth or other damage, such as cracking of the artificial board 2. Here, "matching" means that the milling cutter's treatment of the artificial board 2 meets condition two.

[0091] Condition 2: The milling depth of the artificial board 2 produced by the milling cutter is within the preset threshold range, and the impact force of the milling cutter on the artificial board 2 is insufficient to damage the artificial board 2. Damage includes cracking and expansion of the artificial board 2.

[0092] To improve the quality of milling, pretreatment can be performed before milling. Pretreatment includes leaving the artificial board 2 to be milled idle for a certain period of time after the edge banding is completed, such as 0.5 h, so as to ensure that the glue on the edge banding 1 reacts fully through curing and increase the bonding strength between the edge banding 1 and the artificial board 2.

[0093] Example 2

[0094] In this embodiment, the artificial board 2 remains in a fixed position, while the first milling cutter 3 and the second milling cutter 4 move along a uniform preset direction, thereby creating relative motion between the artificial board 2 and the milling cutters. This allows the milling cutters to mill the entire edge of the artificial board 2 to be milled. Both the first milling cutter 3 and the second milling cutter 4 maintain their respective rotation directions throughout the entire milling operation. Since the remaining parts are the same as the corresponding parts in Embodiment 1, and the working principle is the same, they will not be described in detail here.

[0095] Example 3

[0096] In this embodiment, the artificial board 2 moves along a preset direction, and the first milling cutter 3 and the second milling cutter 4 move along the same preset direction. The moving direction of the artificial board 2 and the moving direction of the milling cutter are exactly opposite. For example, the artificial board 2 moves horizontally from right to left, and the milling cutter moves horizontally from left to right, so that there is also relative motion between the artificial board 2 and the milling cutter. This allows the milling cutter to mill the entire edge of the artificial board 2 to be milled. Both the first milling cutter 3 and the second milling cutter 4 maintain their respective rotation directions throughout the entire process from the start to the end of the milling operation. Since the remaining parts are the same as the corresponding parts of Embodiment 1, and the working principle is the same, they will not be described in detail here.

[0097] Example 4

[0098] Example 1 is for the case where both sides of the edge to be milled of the artificial board 2 contain edge banding 1, that is, both the left and right sides of the figure contain edge banding 1, and the entire edge to be milled needs to be milled.

[0099] In practical applications, there may be situations where the engineered wood panel 2 has edge banding 1 on only one side and not on the other. For example, the left side of the engineered wood panel 2 may not have edge banding 1 due to the need for milling operations, while only the right side has edge banding 1. Simultaneously, it may be necessary to mill all or part of the edge to be milled. This embodiment is provided to address this situation.

[0100] In this embodiment, the first milling cutter 3 starts milling from the periphery of the position where the milling operation needs to begin and the artificial board 2 is located, and the rotation direction of the milling cutter that needs to cross the edge banding 1 among the two milling cutters must meet condition two.

[0101] Condition 2: The force exerted by the rotation direction of the milling cutter on the artificial board 2 has a tendency to act on the edge banding 1 closer to the artificial board 2.

[0102] To satisfy condition two, it means that if edge banding 1 is on the right side of the artificial board 2, then...

[0103] If the entire edge of the artificial board 2 needs to be milled, the first milling cutter 3 starts milling from the left outer edge of the artificial board 2, and the rotation direction of the first milling cutter 3 is clockwise. If the artificial board 2 needs to be milled from a certain position w in the middle of the edge to be milled, the first milling cutter 3 starts milling from the left side of position w. After the first milling cutter 3 has milled a certain distance, the second milling cutter 4 starts milling the artificial board 2, and the rotation direction of the second milling cutter 4 is counterclockwise (when the artificial board 2 moves from right to left). This ensures that the force exerted by the second milling cutter 4 on the artificial board 2 under the counterclockwise rotation will compress the edge banding 1 on the right side of the artificial board 2, that is, it has the effect of bringing the edge banding 1 closer to the artificial board 2, rather than bringing the edge banding 1 away from the artificial board 2.

[0104] Since the remaining parts adopt the same technical solutions and work principles as the corresponding parts of Embodiment 1, they will not be described in detail here.

[0105] Example 5

[0106] In Example 1, the artificial board 2 moves unidirectionally along a preset direction. In some practical applications, the artificial board 2 can also change direction and move in a straight line in different directions. For example, after moving a distance from right to left, the artificial board 2 turns back and moves in a straight line from left to right.

[0107] Regardless of how many times the linear motion of the artificial board 2 changes in direction, it is only necessary to ensure that the sum of the milling operation of the first milling cutter 3 and the second milling cutter 4 and the length of the artificial board 2 is greater than the sum of the lengths of the edges of the artificial board 2 to be milled.

[0108] Since the remaining parts adopt the same technical solutions and work principles as the corresponding parts of Embodiment 1, they will not be described in detail here.

[0109] Example 6

[0110] The preceding five embodiments all employed two milling cutters. In practical applications, this can also be achieved using only one or more milling cutters. For example, using only a first milling cutter 3.

[0111] When the first milling cutter 3 mills the edge banding 1 near the right side of the artificial board 2, the artificial board 2 stops moving or continues to move forward, changing the first milling cutter 3 from clockwise to counterclockwise, and simultaneously moving the artificial board 2 to the left side of the first milling cutter 3. This allows the first milling cutter 3 to complete the milling operation on the entire edge of the artificial board 2. Furthermore, by changing the rotation direction once, the first milling cutter 3 can apply pressure to the edge banding 1 on the left and right sides of the artificial board 2 respectively.

[0112] It should be noted that Embodiment 1 is the best embodiment among the six embodiments. Although the other embodiments differ from Embodiment 1 in terms of effect, all embodiments can complete the milling operation of the edge to be milled and achieve the effect of pressing the edge banding towards the artificial board 2, and will not have the defects and deficiencies pointed out in the background art.

[0113] Specifically, in Embodiment 2, the milling cutter needs to maintain both rotation and movement simultaneously, making its structure more complex. It requires at least a rotating device to drive the rotation and a moving device to drive the movement, necessitating structural improvements to the existing milling cutter. In contrast, the milling cutter in Embodiment 1 only needs to maintain rotation. The movement of the engineered wood panel 2 relies on a platform milling machine, which inherently possesses this function and does not require modification to the existing platform milling machine. This means that Embodiment 1 does not require hardware modifications to the existing engineered wood panel 2 processing line; only the addition of a milling cutter is needed.

[0114] In Embodiment 3, since both the artificial board 2 and the milling cutter need to move, the same situation as in Embodiment 2 exists. Furthermore, in this case, the machining path length formed by the milling operations of the two milling cutters is necessarily greater than the length of the artificial board 2. This means a larger platform milling machine is needed to ensure that the milling cutters can accommodate such a machining path length. Additionally, because the milling cutter is moving, to prevent damage to the artificial board 2 due to milling unevenness, the relative movement speed between the artificial board 2 and the milling cutter needs to be lower than in Embodiment 1, which will affect machining efficiency to some extent. In Embodiment 1, the relative movement speed between the artificial board 2 and the milling cutter is the same as the movement speed of the artificial board 2 itself.

[0115] In Embodiment 4, compared to Embodiment 1, it is necessary to determine the starting milling position based on the milling length, and then adjust the position of the milling cutter. This may require multiple adjustments to the milling cutter position before it can reach the correct position. In Embodiment 1, since the dimensions of the sheet metal are fixed, the first position can be fixed. Therefore, the milling cutter can be fixed in a certain position, and only one linear movement is needed to reach the first position.

[0116] For Embodiment 5, the transmission device that drives the artificial board 2 to move needs to be improved to ensure that the artificial board 2 can change the direction of movement. For example, by rotating the motor in the forward and reverse directions, the artificial board 2 can be driven to move forward and backward, thereby realizing movement in two directions.

[0117] In embodiment six, only one milling cutter can be used, but the rotation direction of the milling cutter needs to be controllably changed, at least clockwise and counterclockwise rotation directions can be achieved, and the control can be achieved by ensuring that the artificial board 2 can stop moving, or by adjusting the first milling cutter 3 to move to different positions, so that one milling cutter can complete the milling process of the entire edge to be milled.

[0118] Comparative Experiment 1

[0119] Comparative document experiment 1 examines the thickness variation of the artificial board 2 under different feed speeds using a single milling cutter and two milling cutters, illustrating the impact of feed speed on the thickness of the artificial board 2. As shown in Table 1, bidirectional infeed-grooving refers to the scheme using two milling cutters to mill a concave groove according to the method of Embodiment 1, while unidirectional infeed-grooving refers to the scheme using a single milling cutter to mill a concave groove using the traditional method. Units m / min and mm refer to meters per minute. At the same feed speed, the thickness variation of the artificial board 2 with the single milling cutter scheme is significantly greater than that with the two milling cutters scheme, especially in terms of average values, all are much greater than the scheme with two milling cutters. Here, the average value refers to the average of the thickness variation at the infeed and the thickness variation at the exit. This fully demonstrates that the scheme using two milling cutters in the various embodiments of the present invention can avoid the problems of chipping or bulging of the artificial board 2 compared to the traditional scheme using a single milling cutter.

[0120] For example, 0.278 = (0.284 + 0.271) / 2, 0.283 = (0.288 + 0.278) / 2, and other averages are calculated in the same way.

[0121]

[0122] Table 1

[0123] Comparative Experiment 2

[0124] Comparative document test 2 examines the changes in the artificial board 2 after it has been soaked in water and milled using two milling cutters and a single milling cutter. The two milling cutters are used in accordance with the scheme of embodiment one of the present invention, while the single milling cutter is used in accordance with the traditional method.

[0125] As shown in Table 2, points 1 and 2 refer to two different locations of the artificial board 2. Thickness refers to the thickness of the artificial board 2 in mm. The average value is the mean of the thicknesses at points 1 and 2. For example, 18.331 = (18.296 + 18.366) / 2, 18.497 = (18.474 + 18.52) / 2, and other average values ​​are calculated similarly. The difference refers to the thickness difference between the thickness after soaking in water for 8 hours and the thickness after soaking for 4 hours at the same location (point 1 or point 2). This thickness difference characterizes the thickness variation.

[0126] As can be seen from Table 2, the exit point of the bidirectional cutting scheme (grooved and non-grooved) has almost no edge expansion. This is because the edge banding 1 at the end of the artificial board 2 is well bonded to the artificial board 2. However, the exit point of the unidirectional cutting almost always shows signs of edge expansion.

[0127] It should be noted that: Point 1 represents the thickness of the engineered wood at the infeed point, and Point 2 represents the thickness of the engineered wood at the exit point. Comparing the two different schemes of "unidirectional infeed - no groove" and "bidirectional infeed - no groove", the thickness increase of the engineered wood at point 2 of the unidirectional infeed - no groove scheme after soaking in water for 8 hours is between 0.258 and 0.472, while the thickness increase of point 2 of the bidirectional infeed scheme after soaking in water for 8 hours is between 0.130 and 0.246, the latter being superior to the former.

[0128] Comparing "unidirectional infeed-groove" and "bidirectional infeed-groove", the thickness increase of the engineered wood panel at point 2 of unidirectional infeed after soaking in water for 8 hours was between 0.292 and 0.443, while the thickness increase of point 2 of bidirectional infeed after soaking in water for 8 hours was between 0.178 and 0.317. The latter is better than the former.

[0129] Furthermore, regardless of whether it has a groove, unidirectional feed plates will exhibit the following at the exit point after being soaked in water for 8 hours: Figure 13 The slight edge swelling phenomenon shown at the middle ring is not observed at the exit point 2 of the plate after soaking in water for 8 hours. Figure 13 The one-way milling cutter mentioned refers to the one-way feed cutter in Table 2.

[0130] In summary, the bidirectional feed method can effectively improve the swelling at the cut-out point during sheet metal processing.

[0131]

[0132] Table 2

[0133] This invention controls the relative relationship between the rotation direction of the milling cutter and the forward direction of the engineered wood panel 2, causing the milling cutter to exert a squeezing effect on the edge banding 1 towards the engineered wood panel 2. This avoids problems such as the edge banding 1 becoming loose or detached, and also prevents the engineered wood panel 2 from being broken or bulging. Bulking refers to the edge banding 1 failing to completely wrap the engineered wood panel 2 in a way that adheres to it, exposing the substrate of the engineered wood panel 2. A gap is formed between the edge banding 1 and the engineered wood panel 2, either partially or completely. The size of this gap is determined by the force exerted by the milling cutter that moves the edge banding 1 away from the engineered wood panel 2. If it is completely detached, the gap between the edge banding 1 and the engineered wood panel 2 is larger. If it is only slightly loosened, the gap is smaller, and the edge banding 1 still cannot be firmly bonded to the engineered wood panel 2.

[0134] The present invention can also achieve the processing and production of artificial board 2 without modifying the existing platform milling machine, or only by making partial modifications, or only by modifying the drive device used to drive the milling cutter. The degree of modification is small, and it can fully or as much as possible utilize the existing processing production line to realize the processing and production of artificial board 2.

[0135] The present invention can also effectively avoid the milling cutter from spinning idle and reduce the processing path length of the milling operation by the milling cutter, thereby improving the processing efficiency and quality of the artificial board 2.

[0136] The embodiments disclosed in this specification are merely illustrative of one aspect of the invention, and the scope of protection of the invention is not limited to these embodiments. Any other functionally equivalent embodiments fall within the scope of protection of the invention. Those skilled in the art can make various other corresponding changes and modifications based on the technical solutions and concepts described above, and all such changes and modifications should fall within the scope of protection of the claims of this invention.

Claims

1. A method for processing engineered wood panels, characterized in that, include: In response to processing commands, the engineered wood panel maintains relative movement with the processing tool, and edge banding tape is attached to the engineered wood panel. The machining tool completes the machining of the engineered wood panel by rotating and maintaining contact with the end of the panel that does not contain the edge banding. The force exerted on the engineered wood panel by the rotation of the cutting tool creates a squeezing effect at the junction of the engineered wood panel and the edge banding, which tends to drive the edge banding closer to the engineered wood panel. The artificial board maintains relative motion with the processing tool, and the specific implementation process includes: The engineered wood panel moves in a unidirectional linear motion along a preset direction, while the cutting tool remains in a fixed position while in contact with the panel. The machining tools include a first milling cutter and a second milling cutter. The artificial board moves unidirectionally in a straight line from one side of the first and second milling cutters, with the preset direction being the direction closer to the first and second milling cutters. The first milling cutter successfully initiates rotation and moves to the first position while the artificial board is in a state that satisfies condition one. The first milling cutter rotates in a first rotation direction, which is exactly opposite to the forward direction of the artificial board. Condition 1: Before the artificial board moves, or when the artificial board continues to move along the moving path and is in a position outside the effective range of the first milling cutter when it is in the first position, First position: The spatial range within which the first milling cutter can act on the artificial board from its outer perimeter as it moves along the path of the artificial board, and the distance d between the part of the artificial board that the first milling cutter can act on and the end of the artificial board closest to the first milling cutter is exactly the first preset distance a. After the engineered wood panel moves to the second position, the second milling cutter moves to the third position. The second milling cutter initiates its rotation before reaching the third position, rotating in the same direction as the engineered wood panel's forward movement. Second position: The first milling cutter remains in contact with the artificial board, and the horizontal distance L between the part of the second milling cutter acting on the artificial board and the end of the artificial board opposite to the forward direction is ≥ a third preset distance e, the third preset distance e > 0, and the third preset distance e is sufficient to ensure that the part of the second milling cutter acting on the artificial board in the third position can contact the artificial board. Third position: The space range in which the second milling cutter can act on the artificial board from the inner side of the end of the artificial board away from the direction of travel as the artificial board continues to move forward, and the distance f between the part of the second milling cutter that can act on the artificial board and the end of the artificial board close to the first milling cutter is exactly the first preset distance a.

2. The method for processing engineered wood panels according to claim 1, characterized in that, Before responding to processing instructions, the engineered wood products undergo pretreatment, which includes soaking the engineered wood products in water and / or curing for a preset time.

3. The method for processing engineered wood panels according to claim 1, characterized in that, When the second milling cutter moves to the third position, the artificial board continues to move forward until the first and second milling cutters have completely milled the edges of the artificial board to be milled. The artificial board then continues to move forward or stops moving forward, thus completing the processing of the artificial board.

4. The method for processing engineered wood panels according to claim 3, characterized in that, The first milling cutter and the second milling cutter completely mill the edge of the artificial board to be milled, which means that the sum of the length of the edge to be milled by the first milling cutter and the length of the edge to be milled by the second milling cutter is greater than or equal to the length of the edge to be milled.

5. The method for processing engineered wood panels according to claim 4, characterized in that, The sum of the length of the edge to be milled by the first milling cutter and the length of the edge to be milled by the second milling cutter is greater than or equal to the length of the edge to be milled on the artificial board. This is specifically achieved by including: The second milling cutter begins milling the artificial board once it reaches the third position and the board moves to a position where it can contact the second milling cutter. As the board continues to move forward, the second milling cutter continues milling the edge to be milled from the point where it just contacts the board to the end of the board away from the direction of travel. The first milling cutter continues milling the edge to be milled from the point where it contacts the board at time t1 to the point where the second milling cutter just contacts the board. Time t1 refers to the moment when the second milling cutter just contacts the board.

6. The method for processing engineered wood panels according to any one of claims 1-5, characterized in that, The first and second milling cutters rotate at the same preset speed. This preset speed is matched to the relative speed of the engineered wood panel relative to the milling cutters. Matching the preset speed and relative speed means that the milling cutters' processing of the engineered wood panel satisfies condition two. Condition 2: The milling depth of the artificial board produced by the milling cutter is within the preset threshold range, and the impact force of the milling cutter on the artificial board is insufficient to damage the artificial board, including cracking and swelling of the artificial board.

7. The method for processing engineered wood panels according to any one of claims 1-5, characterized in that, The specific process of achieving contact between the machining tool and the engineered wood panel includes: The machining tool moves from a preset initial position to a target position by moving in a single linear motion along a preset direction. The target position is located on the motion path of the artificial board and the machining tool relative to each other, so that the artificial board can come into contact with the machining tool. The machining tool in the initial position is set apart from the artificial board.

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